Patent Publication Number: US-2023164774-A1

Title: Prioritization between sr and harq-ack

Description:
RELATED APPLICATIONS 
     This application claims the benefit of U.S. Provisional Patent Application No. 63/008,419, filed Apr. 10, 2020, the disclosure of which is hereby incorporated herein by reference in its entirety. 
    
    
     TECHNICAL FIELD 
     The present disclosure relates to Scheduling Requests (SRs) and Hybrid Automatic Repeat Request (HARQ) feedback on the uplink in a cellular communications system. 
     BACKGROUND 
     In New Radio (NR) Release 15, Uplink Control Information (UCI) consists of physical layer control information that can be Scheduling Request (SR), Hybrid Automatic Repeat Request Acknowledgment (HARQ-ACK) feedback in response to Physical Downlink Shared Channel (PDSCH) receptions, and Channel State Information (CSI). UCI can be sent on either Physical Uplink Control Channel (PUCCH) or on Physical Uplink Shared Channel (PUSCH) multiplexed with uplink (UL) data. On PUCCH, UCI is sent using one of four different PUCCH formats. PUCCH format 0 and PUCCH format 1 are used when the number of UCI bits is 1 or 2, which only happens when the UCI consists of HARQ-ACK and/or SR. The other formats are used when the number of UCI bits is more than two, which happen if CSI is included (with or without HARQ-ACK/SR) or if the number of HARQ-ACK bits is more than two (with or without SR). PUCCH format 0 and PUCCH format 2 are used for PUCCH transmissions over 1 or 2 symbols. 
     A SchedulingRequestResourceConfig is a resource configuration for opportunities for sending SR. The configuration consists of an identity pointing to a PUCCH resource and a periodicityAndOffset that determine time location and periodicity of the occasions for the SR transmission opportunities. The PUCCH resource identified is a specification of starting frequency location (startingPRB) for the resource but also which PUCCH format shall be used on the resource. For SR, the PUCCH format is either format 0 or format 1. All formats specify a time location within a slot using parameters startingSymbolIndex and nrofSymbols. PUCCH format 0, PUCCH format 1, and PUCCH format 4 use a single Physical Resource Block (PRB) in frequency domain while the other formats can be configured with multiple PRBs. 
     The User Equipment (UE) can be configured with multiple SR configurations, where each SR can be associated with a set of Logical Channels (LCHs), i.e. different SR can be associated with different services such as enhanced Mobile Broadband (eMBB) and Ultra-Reliable Low-Latency Communication (URLLC). 
     In Release 15, a UE can be configured with a maximum of four PUCCH resource sets, where each PUCCH resource set may consist of several PUCCH resources that can be used for a range of UCI sizes provided by configuration, including HARQ-ACK bits. The first set is only applicable for 1-2 UCI bits including HARQ-ACK information and can have a maximum of 32 PUCCH resources, while the other sets, if configured, are used for more than two UCI bits including HARQ-ACK and each can be realized using any one of up to a maximum of eight different PUCCH resources. When a UE reports HARQ-ACK on PUCCH, it determines a PUCCH resource set based on the number of HARQ-ACK information bits it has to send and the PUCCH resource indicator field in the last received Downlink Control Information (DCI) format 1_0 or DCI format 1_1 that has a value of PDSCH-to-HARQ feedback timing indicator indicating a slot for the PUCCH transmission that is the same as the slot associated with the next instance of one of the members of the PUCCH resource set. When the size of the determined PUCCH resource set is at most eight (3-bit PUCCH resource indicator field), the PUCCH resource identity within the set is explicitly indicated by the PUCCH resource indicator field in the DCI. If the size of PUCCH resource set is more than eight, the PUCCH resource identity is determined by the index of the first Control Channel Element (CCE) for the Physical Downlink Control Channel (PDCCH) reception in addition to the PUCCH resource indicator field in the DCI. 
     When there are multiple types of UCI and the UE may have PUCCH resources for PUCCH transmissions of UCI that overlap in time, the UE resolves the time overlap using a specified resolution procedure. The result of this procedure is PUCCH resources that do not overlap in time and where each carry UCI. Different UCI types can be multiplexed or dropped if it is not possible to multiplex. There also some specific Release 15 rules that result in that some UCI bits of a certain type, for example CSI, are dropped. 
     In Release 16, it was agreed that a 2-level priority index indication can be configured such that HARQ-ACK, SR, and CSI can be indicated high or low priority. The intention is to enable intra-UE prioritization between different services such as eMBB and URLLC running simultaneously in a UE. The 2-level priority index is used at the physical layer for prioritization between PUCCHs and PUSCHs when there is conflict. A priority index 0 is regarded as low priority, and a priority index 1 is regarded as high priority (i.e., more important). In Release 16, only UCI with the same priority is multiplexed on PUCCH or PUSCH, and the Release 15 time-overlapping resolution procedure is run per priority. If there still are time-overlap between different priorities, the lower priority PUCCH or PUSCH is canceled. For SR, the priority index can be configured in the SchedulingRequestResourceConfig, while for HARQ-ACK in response to a DCI it can be indicated by field in the DCI or, for Semi-Persistent Scheduling (SPS), it is configured by Radio Resource Control (RRC) as for SR. 
     Sequences for PUCCH Format 0 and PUCCH Format 1 
     Both PUCCH format 0 and PUCCH format 1 use sequences for the PUCCH transmission. The information is carried by the cyclic shift of the sequences transmitted on the PUCCH resource. Therefore, both PUCCH format 0 and PUCCH format 1 are configured with an initialCyclic shift which is used to determine the cyclic shift. For PUCCH format 0, it is the cyclic shift that carries the information, while for PUCCH format 1 the information bit(s) is first modulated (1-bit: Binary Phase Shift Keying (BPSK), 2-bits: Quadrature Phase Shift Keying (QPSK)) to a complex valued symbol which is then multiplied with the sequence. 
     As defined in 3GPP TS 38.211 (see, e.g., v16.1.0), the cyclic shift α depends on the symbol and slot number but also on the information the sequence carries. The cyclic shift α varies as a function of the symbol and slot number according to 
     
       
         
           
             
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         n s,f   μ  is the slot number in the radio frame,   l is the Orthogonal Frequency Division Multiplexing (OFDM) symbol number in the PUCCH transmission where l=0 corresponds to the first OFDM symbol of the PUCCH transmission,   l′ is the index of the OFDM symbol in the slot that corresponds to the first OFDM symbol of the PUCCH transmission in the slot given by Third Generation Partnership Project (3GPP) Technical Specification (TS) 38.213,   m 0  is given by 3GPP TS 38.213 for PUCCH format 0 and 1 while for PUCCH format 3 and 4 is defined in subclause 6.4.1.3.3.1 of 3GPP TS 38.211,   m cs =0 except for PUCCH format 0 when it depends on the information to be transmitted according to subclause 9.2 of 3GPP TS 38.213, and   N sc   RB  is the number of subcarriers per resource block (RB).
 
The function n cs (n c , l) is given by
       

     
       
         
           
             
               
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     where the pseudo-random sequence c(i) is defined by subclause 5.2.1 of 3GPP TS 38.211 and N symb   slot  is the number of symbols per slot. The pseudo-random sequence generator shall be initialized with c init =n ID , where n ID  is given by the higher-layer parameter hoppingId if configured, otherwise n ID =N ID   cell  where N ID   cell  is the cell identity (ID). 
     When a UE sends a positive SR and at most two HARQ-ACK information bits in a resource using PUCCH format 0, then the UE transmits the PUCCH in the PUCCH resource using PUCCH format 0 in the PRB(s) for HARQ-ACK information, but with different m cs  than if HARQ-ACK was sent alone. If SR-only is transmitted, the PUCCH is transmitted on the PUCCH resource for SR with m cs =0. 
     As specified in Section 9.2.5.1 of 3GPP TS 38.213 v15.8.0, the Release 15 procedure for multiplexing SR and HARQ-ACK has the following limitation when PUCCH resource for SR and PUCCH resource for HARQ-ACK overlaps:
         If a UE would transmit positive or negative SR in a resource using PUCCH format 0 and HARQ-ACK information bits in a resource using PUCCH format 1 in a slot, the UE transmits only a PUCCH with the HARQ-ACK information bits in the resource using PUCCH format 1.
 
There exists also a proposal (see R1-2001016 section 5.2.2 and R1-2001027) to enhance this rule for high-priority SR and HARQ-ACK where UE would instead prioritize the SR.
       

     SUMMARY 
     Systems and methods are disclosed herein that relate to prioritization of Scheduling Requests (SRs) and Hybrid Automatic Repeat Request (HARQ) feedback information. In one embodiment, a method performed by a wireless communication device for prioritization between a Scheduling Request (SR) occasion and Hybrid Automatic Repeat Request Acknowledgment (HARQ-ACK) information scheduled on overlapping Physical Uplink Control Channel (PUCCH) resources comprising prioritizing or multiplexing a SR occasion on a first PUCCH resource and HARQ-ACK information on a second PUCCH resource, the first PUCCH resource and the second PUCCH resource at least partially overlapping in time. In this manner, latency improvement for uplink (UL) is provided without introducing higher downlink (DL) load nor inter-cell interference since unnecessary re-transmissions can be avoided. 
     In one embodiment, prioritizing or multiplexing the SR occasion on the first PUCCH resource and the HARQ-ACK information on the second PUCCH resource comprises prioritizing or multiplexing the SR occasion on the first PUCCH resource and the HARQ-ACK information on the second PUCCH resource based on a priority of the SR and a priority of the HARQ-ACK information. 
     In one embodiment, the SR occasion uses PUCCH format 0, and the HARQ-ACK information uses PUCCH format 1. 
     In one embodiment, prioritizing or multiplexing the SR occasion on the first PUCCH resource and the HARQ-ACK information on the second PUCCH resource comprises determining that a SR for the SR occasion is a negative SR and, responsive to determining that the SR for the SR occasion is a negative SR, dropping the SR occasion and transmitting one or more HARQ-ACK bits on the second PUCCH resource using PUCCH format 1. 
     In one embodiment, prioritizing or multiplexing the SR occasion on the first PUCCH resource and the HARQ-ACK information on the second PUCCH resource comprises determining that a SR for the SR occasion is not a negative SR and determining whether one or more HARQ-ACK bits to be transmitted satisfy one or more conditions. Prioritizing or multiplexing the SR occasion on the first PUCCH resource and the HARQ-ACK information on the second PUCCH resource further comprises, responsive to determining that the SR for the SR occasion is not a negative SR and determining that the one or more HARQ-ACK bits to be transmitted satisfy the one or more conditions, dropping the one or more HARQ-ACK bits and transmitting the SR on the first PUCCH resource using PUCCH format 0. In one embodiment, prioritizing or multiplexing the SR occasion on the first PUCCH resource and the HARQ-ACK information on the second PUCCH resource further comprises, responsive to determining that the SR for the SR occasion is not a negative SR and determining that the one or more HARQ-ACK bits to be transmitted do not satisfy the one or more conditions, dropping the SR occasion and transmitting one or more HARQ-ACK bits on the second PUCCH resource using PUCCH format 1. In one embodiment, the one or more conditions comprise a condition that the one or more HARQ-ACK bits indicates all ACK, a condition that the one or more HARQ-ACK bits indicates all NACK, a condition that at least one of the one or more HARQ-ACK bits indicates ACK, or a condition that at least one of the HARQ-ACK bits indicates NACK. 
     In one embodiment, prioritizing or multiplexing the SR occasion on the first PUCCH resource and the HARQ-ACK information on the second PUCCH resource comprises determining that a SR for the SR occasion is not a negative SR and, responsive to determining that the SR for the SR occasion is not a negative SR, dropping the one or more HARQ-ACK bits and transmitting the SR on the first PUCCH resource using PUCCH format 0. 
     In one embodiment, prioritizing or multiplexing the SR occasion on the first PUCCH resource and the HARQ-ACK information on the second PUCCH resource comprises determining that a SR for the SR occasion is not a negative SR and, responsive to determining that the SR for the SR occasion is not a negative SR, dropping the SR occasion and transmitting one or more HARQ-ACK bits on the second PUCCH resource using PUCCH format 1, while using a cyclic shift that is different from an initially scheduled cyclic shift. 
     In one embodiment, prioritizing or multiplexing the SR occasion on the first PUCCH resource and the HARQ-ACK information on the second PUCCH resource comprises multiplexing the SR and one or more HARQ-ACK bits on the first PUCCH resource by using a cyclic shift for a sequence used for the SR, the cyclic shift being a function of the one or more HARQ-ACK bits. 
     In one embodiment, prioritizing or multiplexing the SR occasion on the first PUCCH resource and the HARQ-ACK information on the second PUCCH resource comprises multiplexing a SR and one or more HARQ-ACK bits on one of the first PUCCH resource, the second PUCCH resource, or a modified PUCCH resource. In one embodiment, multiplexing the SR and the one or more HARQ-ACK bits on the second PUCCH resource comprises transmitting a PUCCH on the one of the first PUCCH resource, the second PUCCH resource, or a modified PUCCH resource, wherein the PUCCH comprises the HARQ-feedback information and the information that indicates the SR that is appended to the HARQ-feedback information. 
     In one embodiment, multiplexing the SR and the one or more HARQ-ACK bits on the second PUCCH resource by appending information that indicates the SR to HARQ-feedback information that serves as an indication of the one or more HARQ-ACK bits. 
     In one embodiment, the one or more HARQ-ACK bits are two or more HARQ-ACK bits, and multiplexing the SR and the one or more HARQ-ACK bits on the second PUCCH resource by appending information that indicates the SR to HARQ-feedback information, wherein the HARQ feedback information comprises a single bit that serves as an indication of the two or more HARQ-ACK bits in accordance with a predefined rule. In one embodiment, the predefined rule is one of the following rules: a predefined rule that is based on a bundling rule where the single bit is determined to be a first value if the two or more HARQ-ACK bits are ACK and to be a second value otherwise; a predefined rule that if at least one of the two or more HARQ-ACK bits is 0, the single bit is 0, and otherwise the single bit is 1; or a predefined rule that if at least one of the two or more HARQ-ACK bits is 1, the single bit is 1, and otherwise the single bit is 0. 
     In another embodiment, multiplexing the SR and the one or more HARQ-ACK bits comprises multiplexing the SR and the one or more HARQ-ACK bits on the second PUCCH resource by using a cyclic shift of a sequence transmitted on the second PUCCH resource to indicate whether the SR is a positive SR or a negative SR. 
     In one embodiment, multiplexing the SR and the one or more HARQ-ACK bits comprises multiplexing the SR and the one or more HARQ-ACK bits using a modified PUCCH resource. In one embodiment, multiplexing the SR and the one or more HARQ-ACK bits using the modified PUCCH resource comprises transmitting the HARQ-ACK bits on the modified PUCCH resource. In one embodiment, transmission of the HARQ-ACK bits on the modified PUCCH resource indicates a positive SR. 
     In one embodiment, a starting physical resource block (PRB) for the first PUCCH resource and a starting PRB for the second PUCCH resource are not equal, the modified PUCCH resource is determined to be a PUCCH resource with a same starting symbol index, initial cyclic shift, number of symbols, and time domain Orthogonal Cover Code (OCC) as those of the second PUCCH resource for HARQ-ACK information, and the modified PUCCH resource is located on a PRB different from an original PRB of the second PUCCH resource for the HARQ-ACK information. In one embodiment, the modified PUCCH resource is located on an original PRB of the first PUCCH resource for the SR. 
     In one embodiment, a starting PRB for the first PUCCH resource and a starting PRB for the second PUCCH resource are not equal, and the modified PUCCH resource is determined to be a PUCCH resource with a same starting symbol index as that of the first PUCCH resource for the SR but with a same initial cyclic shift, number of symbols, and time domain Orthogonal Cover Code, OCC, as those of the second PUCCH resource for HARQ-ACK information. 
     In one embodiment, an offset is further applied to the starting index of the modified PUCCH resource such that the modified PUCCH resource does not cross a slot boundary. 
     In one embodiment, an offset is further applied to the starting index of the modified PUCCH resource such that the modified PUCCH resource does not completely overlap with the second PUCCH resource. 
     In one embodiment, multiplexing the SR and the one or more HARQ-ACK bits comprises transmitting the SR using the first PUCCH resource and transmitting the one or more HARQ-ACK bits using a modified PUCCH resource. In one embodiment, the modified PUCCH resource comprises one or more Orthogonal Frequency Division Multiplexing (OFDM) symbols from the second PUCCH resource that are not overlapped in time with OFDM symbols of the first PUCCH resource. In one embodiment, the modified PUCCH resource further comprises additional OFDM symbols that are used as uplink control information, UCI, or Demodulation Reference Signal, DMRS, symbols as originally determined for the second PUCCH resource for the HARQ-ACK information. 
     Corresponding embodiments of a wireless communication device are also disclosed. In one embodiment, a wireless communication device for prioritization between a SR occasion and HARQ-ACK information scheduled on overlapping resources is adapted to prioritize or multiplex a SR occasion on a first PUCCH resource and HARQ-ACK information on a second PUCCH resource, the first PUCCH resource and the second PUCCH resource at least partially overlapping in time. 
     In another embodiment, wireless communication device for prioritization between a SR occasion and HARQ-ACK information scheduled on overlapping resources comprises one or more transmitters, one or more receivers, and processing circuitry associated with the one or more transmitters and the one or more receivers. The processing circuitry is configured to cause the wireless communication device to prioritize or multiplex a SR occasion on a first PUCCH resource and HARQ-ACK information on a second PUCCH resource, the first PUCCH resource and the second PUCCH resource at least partially overlapping in time. 
     Embodiments of a method performed by a base station are also disclosed. In one embodiment, a method performed by a base station for prioritization between a SR occasion and HARQ-ACK information scheduled on overlapping PUCCH resources comprises receiving a PUCCH transmission on a PUCCH resource, the PUCCH transmission comprising a SR for a SR occasion configured on a first PUCCH resource, HARQ-ACK information scheduled on a second PUCCH resource, or information that represents both the SR and the HARQ-ACK information, in accordance with a prioritization or multiplexing scheme. The PUCCH resource is either: (a) the first PUCCH resource configured for the SR occasion, (b) the second PUCCH resource configured for the HARQ-ACK information, or (c) a modified PUCCH resource. The first PUCCH resource and the second PUCCH resource at least partially overlap in time. 
     In one embodiment, the SR occasion uses PUCCH format 0, and the HARQ-ACK information uses PUCCH format 1. 
     In one embodiment, the SR is a negative SR, the PUCCH resource is the second PUCCH resource, and receiving the PUCCH transmission comprises receiving one or more HARQ-ACK bits on the second PUCCH resource using PUCCH format 1. 
     In one embodiment, the SR is a positive SR, the one or more HARQ bits satisfy one or more conditions, the PUCCH resource is the first PUCCH resource, receiving the PUCCH transmission comprises receiving the SR on the first PUCCH resource using PUCCH format 0, and the HARQ-ACK information is dropped. 
     In one embodiment, the SR is a positive SR, the one or more HARQ bits do not satisfy one or more conditions, the PUCCH resource is the second PUCCH resource, receiving the PUCCH transmission comprises receiving the one or more HARQ-ACK bits on the second PUCCH resource using PUCCH format 1, and the SR is dropped. 
     In one embodiment, the one or more conditions comprise a condition that the one or more HARQ-ACK bits indicates all ACK, a condition that the one or more HARQ-ACK bits indicates all NACK, a condition that at least one of the one or more HARQ-ACK bits indicates ACK, or a condition that at least one of the HARQ-ACK bits indicates NACK. 
     In one embodiment, the SR is a positive SR, the PUCCH resource is the first PUCCH resource, receiving the PUCCH transmission comprises receiving the SR on the first PUCCH resource using PUCCH format 0, and the HARQ-ACK information is dropped. 
     In one embodiment, the SR is a positive SR, the PUCCH resource is the second PUCCH resource, receiving the PUCCH transmission comprises receiving the HARQ-ACK information on the second PUCCH resource using PUCCH format 1 while using a cyclic shift that is different from an initially scheduled cyclic shift, and the SR occasion is dropped. 
     In one embodiment, the PUCCH resource is the first PUCCH resource and the SR and one or more HARQ-ACK bits are multiplexed on the first PUCCH resource by using a cyclic shift for a sequence used for the SR, the cyclic shift being a function of the one or more HARQ-ACK bits. 
     In one embodiment, the SR and one or more HARQ-ACK bits are multiplexed on the PUCCH resource. In one embodiment, the PUCCH comprises the HARQ-feedback information and the information that indicates the SR that is appended to the HARQ-feedback information. 
     In one embodiment, the SR and the one or more HARQ-ACK bits are multiplexed on the second PUCCH resource by using a cyclic shift of a sequence transmitted on the second PUCCH resource to indicate whether the SR is a positive SR or a negative SR. 
     In one embodiment, the SR and the one or more HARQ-ACK bits are multiplexed on a modified PUCCH resource. 
     In one embodiment, the SR is received using the first PUCCH resource and the one or more HARQ-ACK bits are received using a modified PUCCH resource. 
     Corresponding embodiments of a base station are also disclosed. In one embodiment, a base station for prioritization between a SR occasion and HARQ-ACK information scheduled on overlapping PUCCH resources is adapted to receive a PUCCH transmission on a PUCCH resource, the PUCCH transmission comprising a SR for a SR occasion configured on a first PUCCH resource, HARQ-ACK information scheduled on a second PUCCH resource, or information that represents both the SR and the HARQ-ACK information, in accordance with a prioritization or multiplexing scheme. The PUCCH resource is either: (a) the first PUCCH resource configured for the SR occasion, (b) the second PUCCH resource configured for the HARQ-ACK information, or (c) a modified PUCCH resource. The first PUCCH resource and the second PUCCH resource at least partially overlap in time. 
     In one embodiment, a base station for prioritization between a SR occasion and HARQ-ACK information scheduled on overlapping PUCCH resources comprises processing circuitry configured to cause the base station to receive a PUCCH transmission on a PUCCH resource, the PUCCH transmission comprising a SR for a SR occasion configured on a first PUCCH resource, HARQ-ACK information scheduled on a second PUCCH resource, or information that represents both the SR and the HARQ-ACK information, in accordance with a prioritization or multiplexing scheme. The PUCCH resource is either: (a) the first PUCCH resource configured for the SR occasion, (b) the second PUCCH resource configured for the HARQ-ACK information, or (c) a modified PUCCH resource. The first PUCCH resource and the second PUCCH resource at least partially overlap in time. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The accompanying drawing figures incorporated in and forming a part of this specification illustrate several aspects of the disclosure, and together with the description serve to explain the principles of the disclosure. 
         FIG.  1    illustrates one example of a cellular communications system in which embodiments of the present disclosure may be implemented; 
         FIG.  2    is a flow chart that illustrates the operation of a wireless communication device (e.g., a User Equipment (UE)) in accordance with at least some aspects of Embodiments 1-A and 1-B described herein; 
         FIG.  3    is a flow chart that illustrates the operation of a wireless communication device (e.g., a UE) in accordance with at least some aspects of Embodiment 1-C described herein; 
         FIG.  4    is a flow chart that illustrates the operation of a wireless communication device (e.g., a UE) in accordance with at least some aspects of Embodiment 1-D described herein; 
         FIG.  5    illustrates an example in which a UE would transmit a positive Scheduling Request (SR) in a resource using Physical Uplink Control Channel (PUCCH) format 0 and at most two Hybrid Automatic Repeat Request (HARQ) Acknowledgement (ACK)/Negative Acknowledgement NACK) information bits (also referred to herein as HARQ-ACK information bits) in a resource using PUCCH format 1 in a slot which would overlap in time with the SR resource; 
         FIG.  6   , which is based on  FIG.  5   , illustrates an example in which a modified PUCCH resource that is determined to be a PUCCH format 1 with the same starting symbol index, initial cyclic shift, number of symbols, and time domain Orthogonal Cover Code (OCC) as those of the PUCCH format 1 for HARQ-ACK information, in accordance with an embodiment of the present disclosure; 
         FIG.  7    illustrates, based on  FIG.  5   , an example in which a modified PUCCH resource is determined to be a PUCCH format 1 with the same starting symbol index as that of the PUCCH format 0, but the same initial cyclic shift, number of symbols, and time domain OCC as those of the PUCCH format 1 for HARQ-ACK information, in accordance with another embodiment of the present disclosure; 
         FIG.  8    illustrates an example in which a UE would transmit positive SR in a resource using PUCCH format 0 and at most two HARQ-ACK information bits in a resource using PUCCH format 1 in a slot which would overlap in time with the SR resource; 
         FIG.  9    illustrates, based on  FIG.  8   , an example in which a modified PUCCH resource is determined to be a PUCCH format 1 with the same starting symbol index as that of the PUCCH format 0, but the same initial cyclic shift, number of symbols, and time domain OCC as those of the PUCCH format 1 for HARQ-ACK information, in accordance with one embodiment of the present disclosure; 
         FIG.  10    illustrates an example in which a modified PUCCH resource is determined to be a PUCCH format 1 with the starting symbol index equals that of the PUCCH format 1 for HARQ-ACK plus an offset of −1 symbol and other parameters such as initial cyclic shift, number of symbols, and time domain OCC follow those of the PUCCH format 1 for HARQ-ACK information, in accordance with another embodiment of the present disclosure; 
         FIG.  11    illustrates an example in which a modified PUCCH resource is determined to be a PUCCH format 1 with the starting symbol index equals that of the PUCCH format 1 for HARQ-ACK plus an offset of +1 symbol and other parameters such as initial cyclic shift, number of symbols, and time domain OCC follow those of the PUCCH format 1 for HARQ-ACK information, in accordance with another embodiment of the present disclosure; 
         FIG.  12    illustrates, based on  FIG.  5   , an example in which a modified PUCCH resource is determined to be the pre-empted PUCCH format 1 for HARQ-ACK where the overlapped symbol (overlapped with PUCCH format 0 for SR) is excluded, in accordance with an embodiment of the present disclosure; 
         FIG.  13    is a flow chart that illustrates the operation of a wireless communication device (e.g., a UE) in accordance with at least some of the aspects related to multiplexing embodiments described herein; 
         FIGS.  14 ,  15 , and  16    are schematic block diagrams of example embodiments of a network node; 
         FIGS.  17  and  18    are schematic block diagrams of example embodiments of a wireless device; 
         FIG.  19    illustrates an example embodiment of a communication system in which embodiments of the present disclosure may be implemented; 
         FIG.  20    illustrates example embodiments of the host computer, base station, and UE of  FIG.  19   ; 
         FIGS.  21 ,  22 ,  23 , and  24    are flow charts that illustrate example embodiments of methods implemented in a communication system such as that of  FIG.  19   ; and 
         FIG.  25    is a flow chart that illustrate the operation of a base station, or other network node, in accordance with embodiments of the present disclosure. 
     
    
    
     DETAILED DESCRIPTION 
     The embodiments set forth below represent information to enable those skilled in the art to practice the embodiments and illustrate the best mode of practicing the embodiments. Upon reading the following description in light of the accompanying drawing figures, those skilled in the art will understand the concepts of the disclosure and will recognize applications of these concepts not particularly addressed herein. It should be understood that these concepts and applications fall within the scope of the disclosure. 
     Some of the embodiments contemplated herein will now be described more fully with reference to the accompanying drawings. Other embodiments, however, are contained within the scope of the subject matter disclosed herein, the disclosed subject matter should not be construed as limited to only the embodiments set forth herein; rather, these embodiments are provided by way of example to convey the scope of the subject matter to those skilled in the art. 
     Generally, all terms used herein are to be interpreted according to their ordinary meaning in the relevant technical field, unless a different meaning is clearly given and/or is implied from the context in which it is used. All references to a/an/the element, apparatus, component, means, step, etc. are to be interpreted openly as referring to at least one instance of the element, apparatus, component, means, step, etc., unless explicitly stated otherwise. The steps of any methods disclosed herein do not have to be performed in the exact order disclosed, unless a step is explicitly described as following or preceding another step and/or where it is implicit that a step must follow or precede another step. Any feature of any of the embodiments disclosed herein may be applied to any other embodiment, wherever appropriate. Likewise, any advantage of any of the embodiments may apply to any other embodiments, and vice versa. Other objectives, features, and advantages of the enclosed embodiments will be apparent from the following description. 
     Radio Node: As used herein, a “radio node” is either a radio access node or a wireless communication device. 
     Radio Access Node: As used herein, a “radio access node” or “radio network node” or “radio access network node” is any node in a Radio Access Network (RAN) of a cellular communications network that operates to wirelessly transmit and/or receive signals. Some examples of a radio access node include, but are not limited to, a base station (e.g., a New Radio (NR) base station (gNB) in a Third Generation Partnership Project (3GPP) Fifth Generation (5G) NR network or an enhanced or evolved Node B (eNB) in a 3GPP Long Term Evolution (LTE) network), a high-power or macro base station, a low-power base station (e.g., a micro base station, a pico base station, a home eNB, or the like), a relay node, a network node that implements part of the functionality of a base station (e.g., a network node that implements a gNB Central Unit (gNB-CU) or a network node that implements a gNB Distributed Unit (gNB-DU)) or a network node that implements part of the functionality of some other type of radio access node. 
     Core Network Node: As used herein, a “core network node” is any type of node in a core network or any node that implements a core network function. Some examples of a core network node include, e.g., a Mobility Management Entity (MME), a Packet Data Network Gateway (P-GW), a Service Capability Exposure Function (SCEF), a Home Subscriber Server (HSS), or the like. Some other examples of a core network node include a node implementing an Access and Mobility Management Function (AMF), a User Plane Function (UPF), a Session Management Function (SMF), an Authentication Server Function (AUSF), a Network Slice Selection Function (NSSF), a Network Exposure Function (NEF), a Network Function (NF) Repository Function (NRF), a Policy Control Function (PCF), a Unified Data Management (UDM), or the like. 
     Communication Device: As used herein, a “communication device” is any type of device that has access to an access network. Some examples of a communication device include, but are not limited to: mobile phone, smart phone, sensor device, meter, vehicle, household appliance, medical appliance, media player, camera, or any type of consumer electronic, for instance, but not limited to, a television, radio, lighting arrangement, tablet computer, laptop, or Personal Computer (PC). The communication device may be a portable, hand-held, computer-comprised, or vehicle-mounted mobile device, enabled to communicate voice and/or data via a wireless or wireline connection. 
     Wireless Communication Device: One type of communication device is a wireless communication device, which may be any type of wireless device that has access to (i.e., is served by) a wireless network (e.g., a cellular network). Some examples of a wireless communication device include, but are not limited to: a User Equipment device (UE) in a 3GPP network, a Machine Type Communication (MTC) device, and an Internet of Things (IoT) device. Such wireless communication devices may be, or may be integrated into, a mobile phone, smart phone, sensor device, meter, vehicle, household appliance, medical appliance, media player, camera, or any type of consumer electronic, for instance, but not limited to, a television, radio, lighting arrangement, tablet computer, laptop, or PC. The wireless communication device may be a portable, hand-held, computer-comprised, or vehicle-mounted mobile device, enabled to communicate voice and/or data via a wireless connection. 
     Network Node: As used herein, a “network node” is any node that is either part of the RAN or the core network of a cellular communications network/system. 
     Note that the description given herein focuses on a 3GPP cellular communications system and, as such, 3GPP terminology or terminology similar to 3GPP terminology is oftentimes used. However, the concepts disclosed herein are not limited to a 3GPP system. 
     Note that, in the description herein, reference may be made to the term “cell”; however, particularly with respect to 5G NR concepts, beams may be used instead of cells and, as such, it is important to note that the concepts described herein are equally applicable to both cells and beams. 
     There currently exist certain challenge(s). Based on the existing procedure specified by 3GPP for NR, if a Physical Uplink Control Channel (PUCCH) format 0 for a Scheduling Request (SR) and a PUCCH format 1 for Hybrid Automatic Repeat Request (HARQ) feedback (HARQ-ACK) are overlapped, the UE cannot multiplex the SR and the HARQ-ACK, and the UE prioritizes the HARQ-ACK transmission. This means that, if SR is triggered, the UE drops the SR and transmits only the HARQ-ACK. 
     From a latency perspective, the above limitation is undesirable, especially if the SR is associated with Ultra-Reliable Low-Latency Communication (URLLC) traffic. Therefore, it could be tempting to enhance this rule so that if both SR and HARQ-ACK information are of high priority (priority index 1), then the UE would transmit the SR instead. Upon reception of the SR, the gNB would then, however, only know that HARQ-ACK was not sent. Since the UE could have failed to detect the Physical Downlink Control Channel (PDCCH), the gNB would need to re-schedule the data taking into account that the UE may have failed detecting the PDCCH. This may reduce soft-combining gain that otherwise could be achieved. Further, such a scheme has the drawback that, since URLLC has high reliability requirements, it is likely so that HARQ-ACK indicates ACK most of the time. Hence, omitting HARQ-ACK indicating ACK lead to unnecessary transmissions on both PDCCH and Physical Downlink Shared Channel (PDSCH). Such an enhanced scheme would lead to both higher downlink (DL) load and increased DL inter-cell interference which is bad from a URLLC perspective. 
     Certain aspects of the present disclosure and their embodiments may provide solutions to the aforementioned or other challenges. Systems and methods are disclosed herein for prioritization and/or multiplexing SR using PUCCH format 0 and HARQ using PUCCH format 1 when the PUCCH resources overlap. 
     Systems and methods disclosed herein provide prioritization/multiplexing for SR and HARQ-ACK in scenario where SR would be dropped in NR Release 15. 
     Certain embodiments may provide one or more of the following technical advantage(s). Latency improvement for uplink (UL) (gNB is informed about SR presence) without introducing higher DL load nor inter-cell interference since unnecessary re-transmissions are avoided. 
       FIG.  1    illustrates one example of a cellular communications system  100  in which embodiments of the present disclosure may be implemented. In the embodiments described herein, the cellular communications system  100  is a 5G System (5GS) including a Next Generation RAN (NG-RAN) and a 5G Core (5GC). In this example, the RAN includes base stations  102 - 1  and  102 - 2 , which in the 5GS include NR base stations (gNBs) and optionally next generation eNBs (ng-eNBs) (i.e., LTE RAN nodes connected to the 5GC), controlling corresponding (macro) cells  104 - 1  and  104 - 2 . The base stations  102 - 1  and  102 - 2  are generally referred to herein collectively as base stations  102  and individually as base station  102 . Likewise, the (macro) cells  104 - 1  and  104 - 2  are generally referred to herein collectively as (macro) cells  104  and individually as (macro) cell  104 . The RAN may also include a number of low power nodes  106 - 1  through  106 - 4  controlling corresponding small cells  108 - 1  through  108 - 4 . The low power nodes  106 - 1  through  106 - 4  can be small base stations (such as pico or femto base stations) or Remote Radio Heads (RRHs), or the like. Notably, while not illustrated, one or more of the small cells  108 - 1  through  108 - 4  may alternatively be provided by the base stations  102 . The low power nodes  106 - 1  through  106 - 4  are generally referred to herein collectively as low power nodes  106  and individually as low power node  106 . Likewise, the small cells  108 - 1  through  108 - 4  are generally referred to herein collectively as small cells  108  and individually as small cell  108 . The cellular communications system  100  also includes a core network  110 , which in the 5GS is referred to as the 5G Core (5GC). The base stations  102  (and optionally the low power nodes  106 ) are connected to the core network  110 . 
     The base stations  102  and the low power nodes  106  provide service to wireless communication devices  112 - 1  through  112 - 5  in the corresponding cells  104  and  108 . The wireless communication devices  112 - 1  through  112 - 5  are generally referred to herein collectively as wireless communication devices  112  and individually as wireless communication device  112 . In the following description, the wireless communication devices  112  are oftentimes UEs and as such sometimes referred to herein as UEs or UEs  112 , but the present disclosure is not limited thereto. 
     Now, a description of some embodiments of the present disclosure is provided. 
     1. Prioritization 
     The present disclosure teaches enhanced methods for prioritization between SR to be transmitted on a first PUCCH resource with PUCCH format 0 and one or two HARQ-ACK bit(s) to be transmitted on a second PUCCH resource with PUCCH format 1. In one embodiment, the two PUCCH occasions overlap in time. One example condition is that the two PUCCH resources have the same starting symbol. Another example condition is that the two PUCCH resources overlap over at least one Orthogonal Frequency Division Multiplexing (OFDM) symbol but may or may not have the same starting symbol. 
     In this method, when SR and HARQ-ACK PUCCH resources overlap, SR is prioritized over HARQ-ACK under certain conditions. 
     In one variation, the embodiments described below are applied only for SR designated as high-priority, while the Release 15 procedure is reused if SR is designated as low-priority. The HARQ-ACK has the same priority level as that of SR. 
     In another variation, the embodiments described below are applied regardless of SR priority level. 
     1.1. Embodiment 1-A. Prioritization Using Scheduled PUCCH Resources and Cyclic Shift 
     A SR can have one of two states, namely, a positive SR or a negative SR. A positive SR is where the UE is requesting to be scheduled. A negative SR is where the UE is not requesting to be scheduled. Note that there may be more than two SR states. Also, positive SRs are signaled, whereas negative SRs correspond to no transmission. This scheme of using positive and negative SRs is referred to as on/off keying. 
     In one non-limiting embodiment,
         If the SR is a negative SR, then Release 15 procedure is reused, i.e., drop the SR reporting occasion and transmit only HARQ-ACK bit(s) on the HARQ-ACK PUCCH resource with PUCCH format 1 (also denoted as PF1);   Otherwise (i.e., if the SR is a positive SR), the UE drops the HARQ-ACK bit(s), and transmits SR using the SR PUCCH resource with PUCCH format 0 if the HARQ-ACKs satisfies a predefined criteria.
           Otherwise (i.e., if the SR is a positive SR but the HARQ-ACK bit(s) do not satisfy a predefined criteria), the UE drops the SR reporting occasion, and transmits HARQ-ACK information on the HARQ-ACK PUCCH resource with PUCCH format 1.   
               

     The predefined criteria can be one of the following options below.
         In a first example, the predefined criteria is: the one or two HARQ-ACK bits indicates all ACK.   In a second example, the predefined criteria is: the one or two HARQ-ACK bits indicates all NACK.   In a third example, the predefined criteria is: at least one of the HARQ-ACK bits indicates ACK.   In a fourth example, the predefined criteria is: at least one of the HARQ-ACK bits indicates NACK.       

     For the four examples above, the first example is preferred if the probability for ACK is high (e.g., &gt;95%), while the second example is preferred if the probability for ACK is low (e.g., &gt;50%). Hence, the two embodiments may be combined in another embodiment wherein the UE may be semi-statically configured (e.g., via RRC) whether the rule in first or second embodiment shall be used. 
     1.2. Embodiment 1-B. Prioritization Using Scheduled PUCCH Resources and Cyclic Shift 
     Embodiment 1-A has the issue that the SR value (negative or positive) is not distinguishable when the HARQ-ACK bit(s) are transmitted using HARQ-ACK PUCCH resources (with format 1). 
     To further prioritize SR, the alternative below can be used.
         If the SR is a negative SR, then Release 15 procedure is reused, i.e., drop the SR reporting occasion and transmit only HARQ-ACK bit(s) on the HARQ-ACK PUCCH resource with PUCCH format 1;   Otherwise (i.e., if the SR is a positive SR), the UE drops the HARQ-ACK bit(s), and transmits SR using the SR PUCCH resource with PUCCH format 0 (also denoted as PF0).       

     1.3. Embodiment 1-C. Prioritization Using Scheduled PUCCH Resources and Different Cyclic Shift of PF1 
     To transit both SR and HARQ-ACK bits when SR is positive, the alternative below can be used.
         If the SR is a negative SR, then Release 15 procedure is reused, i.e., drop the SR reporting occasion and transmit only HARQ-ACK bit(s) on the HARQ-ACK PUCCH resource with PUCCH format 1. The cyclic shift (CS) is as initially scheduled.   Otherwise (i.e., if the SR is a positive SR), the UE drops the SR reporting occasion, and transmit the HARQ-ACK bit(s) using the HARQ-ACK PUCCH resource with PUCCH format 1, while using a cyclic shift different from the initially scheduled CS.
           One example is to increment the initial cyclic shift by 1.   Another example is to increment the initial cyclic shift by 3.   
               

     1.4. Embodiment 1-D. Prioritization Using Scheduled PUCCH Resources and Different Cyclic Shift of PF0 
     In one non-limiting embodiment, the UE transmits SR using PUCCH format 0 wherein m cs  is determined based on HARQ-ACK bit(s) according to Table 1 or Table 2. 
     
       
         
           
               
             
               
                 TABLE 1 
               
             
            
               
                   
               
               
                 Sequence cyclic shift m CS  to be used on SR PUCCH 
               
               
                 resource for one HARQ-ACK information bit 
               
            
           
           
               
               
               
            
               
                   
                 HARQ-ACK value 
                   
               
            
           
           
               
               
               
            
               
                   
                 0 
                 1 
               
               
                   
                   
               
            
           
           
               
               
               
               
            
               
                   
                 Sequence cyclic shift 
                 m CS  = x 
                 m CS  = y 
               
               
                   
                   
               
            
           
         
       
     
     
       
         
           
               
             
               
                 TABLE 2 
               
             
            
               
                   
               
               
                 Sequence cyclic shift m CS  to be used on SR PUCCH 
               
               
                 resource for two HARQ-ACK information bits 
               
            
           
           
               
               
            
               
                   
                 HARQ-ACK value 
               
            
           
           
               
               
               
               
               
            
               
                   
                 {0, 0} 
                 {0, 1} 
                 {1, 0} 
                 {1, 1} 
               
               
                   
                   
               
            
           
           
               
               
               
               
               
            
               
                 Sequence cyclic shift 
                 m CS  = x 
                 m CS  = y 
                 m CS  = z 
                 m CS  = w 
               
               
                   
               
            
           
         
       
     
     The sequence cyclic shifts x, y, z, and w in Table 1 and Table 2 are such that they are different but also different from m cs =0 that is used when SR is transmitted alone, i.e. 0≠x≠y for Table 1 and 0≠x≠y≠z≠w for Table 2. One example of x, y, z, and w that can be used is:
         Table 1: x=3, y=9   Table 2: x=1, y=4, z=10, and w=7       

     In one non-limiting embodiment, the UE transmits SR using PUCCH format 0 wherein m cs  is determined based on two HARQ-ACK bits according to Table 3. 
     
       
         
           
               
             
               
                 TABLE 3 
               
             
            
               
                   
               
               
                 Sequence cyclic shift m CS  to be used on SR PUCCH 
               
               
                 resource for two HARQ-ACK information bits 
               
            
           
           
               
               
               
            
               
                   
                 HARQ-ACK value 
                   
               
            
           
           
               
               
               
            
               
                   
                 {0, 0} 
                 Otherwise 
               
               
                   
                   
               
            
           
           
               
               
               
               
            
               
                   
                 Sequence cyclic shift 
                 m CS  = 3 
                 m CS  = 9 
               
               
                   
                   
               
            
           
         
       
     
     In one non-limiting embodiment, the UE transmits SR using PUCCH format 0 wherein m cs  is determined based on two HARQ-ACK bits according to Table 4. 
     
       
         
           
               
             
               
                 TABLE 4 
               
             
            
               
                   
               
               
                 Sequence cyclic shift m CS  to be used on SR PUCCH 
               
               
                 resource for two HARQ-ACK information bits 
               
            
           
           
               
               
               
            
               
                   
                 HARQ-ACK value 
                   
               
            
           
           
               
               
               
            
               
                   
                 {0, 0} 
                 Otherwise 
               
               
                   
                   
               
            
           
           
               
               
               
               
            
               
                   
                 Sequence cyclic shift 
                 m CS  = 3 
                 m CS  = 9 
               
               
                   
                   
               
            
           
         
       
     
     In one non-limiting embodiment, some RRC configurations determine whether any of the above rules should be used or not. For example, UE may be configured with a priornizePucchFormat0-over-PucchFormat1 which if enabled/configured instructs UE to apply one of the above rules. 
     1.5. Example Flow Charts 
       FIG.  2    is a flow chart that illustrates the operation of a wireless communication device  112  (e.g., a UE) in accordance with at least some aspects of Embodiments 1-A and 1-B described above. Optional steps are represented by dashed boxes/shapes. As illustrated, the wireless communication device  112  receives PUCCH resource configurations from a network node (e.g., a base station  102 ) (step  200 ). The PUCCH resource configurations configures a number of PUCCH resources including a first PUCCH resource (referred to herein as a SR resource) and a second PUCCH resource (referred to herein as a HARQ-ACK resource). These PUCCH resources at least partially overlap in time. The wireless communication device  112  performs a prioritization procedure by which the wireless communication device  112  determines whether to transmit a SR in the SR resource or a HARQ-ACK in the HARQ-ACK resource (step  202 ). The wireless communication device  112  then transmits either the SR or the HARQ-ACK in accordance with prioritization (step  204 ). More specifically, the wireless communication device  112  determines whether the SR for the SR resource is a negative SR (step  202 A). If so, the wireless communication device  112  drops the SR (i.e., drops the SR reporting occasion) (step  204 A) and transmits the HARQ-ACK bit(s) on the HARQ-ACK resource with PUCCH format 1 (step  204 B). 
     If the SR is a positive SR, the wireless communication device  112  operates differently depending on the particular embodiment. For embodiment 1-A, the wireless communication device  112  determines whether the HARQ-ACK bit(s) satisfy one or more conditions (step  202 B), as described above with respect to Embodiment 1-A. If the HARQ-ACK bit(s) do not satisfy the one or more conditions, the wireless communication device  112  drops the SR (i.e., drops the SR reporting occasion) (step  204 A) and transmits the HARQ-ACK bit(s) on the HARQ-ACK resource with PUCCH format 1 (step  204 B). 
     For embodiment 1-B, if the SR is a positive SR, the wireless communication device  112  drops the HARA-ACK bit(s) (step  204 C) and transmits the SR using the SR resource with PUCCH format 0 (step  204 D), as described above. 
       FIG.  3    is a flow chart that illustrates the operation of a wireless communication device  112  (e.g., a UE) in accordance with at least some aspects of Embodiment 1-C described above. Optional steps are represented by dashed boxes/shapes. As illustrated, the wireless communication device  112  receives PUCCH resource configurations from a network node (e.g., a base station  102 ) (step  300 ). The PUCCH resource configurations configures a number of PUCCH resources including a first PUCCH resource (referred to herein as a SR resource) and a second PUCCH resource (referred to herein as a HARQ-ACK resource). These PUCCH resources at least partially overlap in time. The wireless communication device  112  performs a prioritization procedure by which the wireless communication device  112  determines whether to transmit HARQ-ACK in the HARQ-ACK resource or to transmit both SR and HARQ-ACK (step  302 ). The wireless communication device  112  then transmits either the HARQ-ACK or both the SR and the HARQ-ACK in accordance with prioritization (step  304 ). More specifically, the wireless communication device  112  determines whether the SR for the SR resource is a negative SR (step  302 A). If so, the wireless communication device  112  drops the SR (i.e., drops the SR reporting occasion) (step  304 A) and transmits the HARQ-ACK bit(s) on the HARQ-ACK resource with PUCCH format 1 (step  304 B). 
     If the SR is a positive SR, the wireless communication device  112  drops the SR reporting occasion (step  304 C) and transmits the HARQ-ACK bit(s) using the HARQ-ACK resource with PUCCH format 1, while using a cycle shift that is different from an initially scheduled cyclic shift, as described above (step  304 D). In this manner, both the positive SR and the HARQ-ACK bit(s) are indicated. 
       FIG.  4    is a flow chart that illustrates the operation of a wireless communication device  112  (e.g., a UE) in accordance with at least some aspects of Embodiment 1-D described above. Optional steps are represented by dashed boxes/shapes. As illustrated, the wireless communication device  112  receives PUCCH resource configurations from a network node (e.g., a base station  102 ) (step  400 ). The PUCCH resource configurations configures a number of PUCCH resources including a first PUCCH resource (referred to herein as a SR resource) and a second PUCCH resource (referred to herein as a HARQ-ACK resource). These PUCCH resources at least partially overlap in time. The wireless communication device  112  transmits a SR on the PUCCH resource using a sequence cyclic shift that is a function of the HARQ-bit(s), as described above (step  404 ). In one embodiment, step  404  is performed if the SR is a positive SR but not if the SR is a negative SR. Further, in one embodiment, the HARQ-ACK resource is not used (i.e., the HARQ-ACK occasion is dropped since the HARQ-ACK bit(s) are indicated via the sequence cyclic shift for the transmitted SR) (step  402 ). 
     2. Multiplexing 
     The present disclosure also teaches enhanced methods for multiplexing SR and HARQ-ACK where SR is to be transmitted with PUCCH format 0 and one or two HARQ-ACK bit(s) to be transmitted with PUCCH format 1 from a UE, where the two PUCCH transmissions would overlap in time. 
     The following embodiments apply to the case when both SR and HARQ-ACK have the same priority levels (e.g., both are with high priority index). 
     2.1. Modified HARQ-ACK Codebook 
     2.1.1. Appending SR Information 
     In one non-limiting embodiment, if a UE would transmit SR in a resource using PUCCH format 0 and one HARQ-ACK information bit in a resource using PUCCH format 1 which would overlap in time with the SR resource, the UE transmits a PUCCH with 2-bit information using the PUCCH format 1 resource, where the first information bit is the HARQ-ACK bit and the second information bit corresponds to a positive (e.g., value 1) or negative (e.g., value 0) SR. 
     In one non-limiting embodiment, if a UE would transmit SR in a resource using PUCCH format 0 and two HARQ-ACK information bits in a resource using PUCCH format 1 which would overlap in time with the SR resource, the UE transmits a PUCCH with 2-bit information using the PUCCH format 1 resource, where the first information bit is a HARQ-ACK information bit determined from the available two information bits using on a predefined rule and the second information bit corresponds to a positive (e.g., value 1) or negative (e.g., value 0) SR. The predefined rule to determine the HARQ-ACK information bit based on the available two HARQ-ACK bits at the UE, can be one of the following options below.
         In a first example, the predefined rule is based on the bundling rule where the HARQ-ACK information bit is determined to be of value 1 (or 0) if both HARQ-ACK bits are ACK, and to be of value 0 (or 1) otherwise.   In a second example, the predefined rule is that if at least one of the available HARQ-ACK bits is 0, the HARQ information bit is 0, and 1, otherwise.   In a third example, the predefined rule is that if at least one of the available HARQ-ACK bits is 1, the HARQ information bit is 1, and 0, otherwise.       

     2.1.2. Multiplexing SR Information Using a Cyclic Shift Offset 
     In one non-limiting embodiment, if a UE would transmit a positive SR in a resource using PUCCH format 0 and at most two HARQ-ACK information bits in a resource using PUCCH format 1 which would overlap in time with the SR resource, the UE transmits the PUCCH in the resource using PUCCH format 1 for HARQ-ACK information with m cs =6 or any non-zero value (instead of m cs =0) for the value of cyclic shift α described in Section 6.3.2.2.2 in TS 38.211, V16.1.0. The cyclic shift offset used for the PUCCH transmission indicates a positive SR. 
     If a UE would not transmit a positive SR in a resource using PUCCH format 0 and would transmit at most two HARQ-ACK information bits in a resource using PUCCH format 1 which would overlap in time with the SR resource, the UE transmits the PUCCH in the resource using PUCCH format 1 for HARQ-ACK information with m cs =0 for the value of cyclic shift α as originally described in Section 6.3.2.2.2 in TS 38.211, V16.1.0. The cyclic shift offset used for the PUCCH transmission indicates a negative SR. 
     2.2. Modified PUCCH Resource in Case of Positive SR 
     In one non-limiting embodiment, if a UE would transmit positive SR in a resource using PUCCH format 0 and at most two HARQ-ACK information bits in a resource using PUCCH format 1 in a slot which would overlap in time with the SR resource, the UE determines a modified PUCCH resource, and transmits HARQ-ACK information in a PUCCH using the modified PUCCH resource. The modified PUCCH resource used for the PUCCH transmission indicates a positive SR. 
     If a UE would not transmit a positive SR in a resource using PUCCH format 0 and would transmit at most two HARQ-ACK information bits in a resource using PUCCH format 1 in a slot which would overlap in time with the SR resource, the UE transmits a PUCCH in the resource using PUCCH format 1 for HARQ-ACK information. The (non-modified) PUCCH resource used for the PUCCH transmission indicates a negative SR. 
     In one version of the above embodiment, if the configured starting PRBs for PUCCH format 0 for SR and PUCCH format 1 for HARQ-ACK are not equal, the modified PUCCH resource is determined to be a PUCCH format 1 with the same starting symbol index, initial cyclic shift, number of symbols, and time domain Orthogonal Cover Code (OCC) as those of the PUCCH format 1 for HARQ-ACK information. The modified PUCCH resource is located on a PRB different from the original PRB of PUCCH format 1 for HARQ-ACK. As a preferred embodiment, the modified PUCCH resource is located on the original PRB of PUCCH format 0 for SR. An illustrating example is given in  FIG.  6    based on an example of overlapped PUCCH resources of SR and HARQ-ACK as in  FIG.  5   . 
       FIG.  5    illustrates an example where a UE would transmit positive SR in a resource using PUCCH format 0 and at most two HARQ-ACK information bits in a resource using PUCCH format 1 in a slot which would overlap in time with the SR resource. 
       FIG.  6   , which is based on  FIG.  5   , illustrates a modified PUCCH resource that is determined to be a PUCCH format 1 with the same starting symbol index, initial cyclic shift, number of symbols, and time domain OCC as those of the PUCCH format 1 for HARQ-ACK information. 
     In another version of the above embodiment, if the configured starting PRBs for PUCCH format 0 for SR and PUCCH format 1 for HARQ-ACK are not equal, the modified PUCCH resource is determined to be a PUCCH format 1 with the same starting symbol index as that of the PUCCH format 0 originally configured for SR, but with the same initial cyclic shift, number of symbols, and time domain OCC as those of the PUCCH format 1 for HARQ-ACK information. The modified PUCCH resource is located on a PRB different from the original PRB of PUCCH format 1 for HARQ-ACK. As a preferred embodiment, the modified PUCCH resource is located on the original PRB of PUCCH format 0 for SR. An illustrating example is given in  FIG.  7    based on an example of overlapped PUCCH resources of SR and HARQ-ACK as in  FIG.  5   . 
       FIG.  7    illustrates, based on  FIG.  5   , a modified PUCCH resource is determined to be a PUCCH format 1 with the same starting symbol index as that of the PUCCH format 0, but the same initial cyclic shift, number of symbols, and time domain OCC as those of the PUCCH format 1 for HARQ-ACK information. 
     In one version of the above embodiment, if the configured starting PRBs for PUCCH format 0 for SR and PUCCH format 1 for HARQ-ACK is the same, the modified PUCCH resource is determined to be a PUCCH format 1 with the same starting symbol index as that of the PUCCH format 0 originally configured for SR, but with the same initial cyclic shift, number of symbols, and time domain OCC as those of the PUCCH format 1 for HARQ-ACK information. If the PUCCH format 1 is 14 symbols long, the UE may transmit only a PUCCH with the HARQ-ACK information bits in the resource using PUCCH format 1. An illustrating example is given in  FIG.  10    based on an example of overlapped PUCCH resources of SR and HARQ-ACK as in  FIG.  8   . 
       FIG.  8    illustrates an example where a UE would transmit positive SR in a resource using PUCCH format 0 and at most two HARQ-ACK information bits in a resource using PUCCH format 1 in a slot which would overlap in time with the SR resource. 
       FIG.  9    illustrates, based on  FIG.  8   , a modified PUCCH resource is determined to be a PUCCH format 1 with the same starting symbol index as that of the PUCCH format 0, but the same initial cyclic shift, number of symbols, and time domain OCC as those of the PUCCH format 1 for HARQ-ACK information. 
     For above descriptions, if the modified PUCCH resource would be determined to cross a slot boundary or completely overlap with the original PUCCH format 1 for HARQ-ACK, the starting symbol index of the modified PUCCH resource is determined to be equal to the starting symbol index of the original PUCCH 1 for HARQ-ACK plus an offset value. One or more offset values can be configured, and one is used depending on how the SR resource is overlapped with the HARQ-ACK resource. 
     In one example, in  FIG.  10    where PUCCH format 0 for SR starts in the first half of the PUCCH format 1 for HARQ-ACK, reusing the starting symbol of PUCCH format 0 for SR but other parameters from PUCCH format 1 for HARQ-ACK would result in a modified PUCCH resource crossing a slot boundary. A negative offset value of −1 symbol is applied to the starting symbol index of the original PUCCH 1 for HARQ-ACK to determine the actual starting symbol of the modified PUCCH resource. In other words,  FIG.  10    illustrates the modified PUCCH resource is determined to be a PUCCH format 1 with the starting symbol index equals that of the PUCCH format 1 for HARQ-ACK plus an offset of −1 symbol. Other parameters such as initial cyclic shift, number of symbols, and time domain OCC follow those of the PUCCH format 1 for HARQ-ACK information. 
     In another example, in  FIG.  11   , where PUCCH format 0 for SR starts in the second half of the PUCCH format 1 for HARQ-ACK, reusing the starting symbol of PUCCH format 0 for SR but other parameters from PUCCH format 1 for HARQ-ACK would result in a modified PUCCH resource crossing a slot boundary. A negative offset value of −1 symbol is applied to the starting symbol index of the original PUCCH 1 for HARQ-ACK to determine the actual starting symbol of the modified PUCCH resource. In other words,  FIG.  11    illustrates the modified PUCCH resource is determined to be a PUCCH format 1 with the starting symbol index equals that of the PUCCH format 1 for HARQ-ACK plus an offset of +1 symbol. Other parameters such as initial cyclic shift, number of symbols, and time domain OCC follow those of the PUCCH format 1 for HARQ-ACK information. 
     2.3. Pre-Empted PUCCH Resource for HARQ-ACK Transmission 
     In one non-limiting embodiment, if a UE would transmit positive SR in a resource using PUCCH format 0 and at most two HARQ-ACK information bits in a resource using PUCCH format 1 in a slot which would overlap in time with the SR resource, the UE determines a modified PUCCH resource for HARQ-ACK transmission, and transmits SR using the PUCCH format 0 resource and HARQ-ACK information bits using the modified PUCCH resource. 
     In one version of the above embodiment, the modified PUCCH resource is the preempted PUCCH format 1 resource where the OFDM symbols which are overlapped in time with those of the PUCCH format 0 are excluded. The remaining OFDM symbols of the modified PUCCH resources are used as UCI or Demodulation Reference Signal (DMRS) symbols as originally determined for the PUCCH format 1 for HARQ-ACK information. In case that intra-slot frequency hopping is enabled for the PUCCH format 1, the PRB indices for each remaining symbol are the same as originally determined for the PUCCH format 1. An illustrating example is given in  FIG.  12    based on an example of overlapped PUCCH resources of SR and HARQ-ACK in  FIG.  5   .  FIG.  12    illustrates, based on  FIG.  5   , a modified PUCCH resource is determined to be the pre-empted PUCCH format 1 for HARQ-ACK where the overlapped symbol (overlapped with PUCCH format 0 for SR) is excluded. 
     In one version of the above embodiment, the modified PUCCH resource is used for HARQ-ACK transmission only if the remaining number of symbols (non-overlapped symbols) is larger than 3. 
     2.4. Example Flow Chart 
       FIG.  13    is a flow chart that illustrates the operation of a wireless communication device  112  (e.g., a UE) in accordance with at least some of the aspects above related to the multiplexing embodiments. Optional steps are represented by dashed boxes. As illustrated, the wireless communication device  112  receives PUCCH resource configurations from a network node (e.g., a base station  102 ) (step  400 ). The PUCCH resource configurations configures a number of PUCCH resources including a first PUCCH resource (referred to herein as a SR resource) and a second PUCCH resource (referred to herein as a HARQ-ACK resource). These PUCCH resources at least partially overlap in time. The wireless communication device  112  multiplexes a SR and HARQ-ACK bit(s) in accordance with any of the embodiments described above (step  1302 ). For example, in one embodiment, the wireless communication device  112  multiplexes the SR and HARQ-ACK bit(s) using a modified HARQ-ACK codebook (step  1302 A). This may be done by, for example, appending SR information to the HARQ-ACK bit(s) (step  1302 A 1 ) or by using a cyclic shift offset (step  1302 A 2 ). In another embodiment, the wireless communication device  112  multiplexes the SR and HARQ-ACK bit(s) using a modified PUCCH resource, in the case of a positive SR (step  1302 B). In another embodiment, the wireless communication device  112  multiplexes the SR and HARQ-ACK bit(s) using pre-empted SR resource for transmission of HARQ-ACK bit(s) (step  1302 C). 
     3. Different Priority 
     In the following embodiments, SR and HARQ-ACK have different priority levels and the above-mentioned rules are used based on the priorities of SR and HARQ-ACK. 
     In one exemplary scenario, if SR and HARQ-ACK have the same priorities, one of the rules in Section 1 or 2 is used, otherwise the one with lower priority is dropped. 
     In another exemplifying embodiment, if SR has higher priority, then one of the rules in Section 1 or 2 is used. Otherwise, SR is dropped/canceled or multiplexed with HARQ-ACK according to one of the rules in Section 2. 
     4. Additional Details 
     Now a description of some additional details that are applicable to all of the embodiments described is provided. However, first, it should be noted that while the description above focus on the operation of the wireless communication device  112  or UE, there are corresponding embodiments of the operation of the base station  102  or gNB. For instance, the base station  102  or gNB provides the configuration (or scheduling) of the overlapping PUCCH resources to the wireless communication device  112  or UE and receives the prioritized or multiplexed UCI (i.e., the SR, the HARQ-ACK bit(s), or information that represents both the SR and the HARQ-ACK bit(s) (i.e., the multiplexed information)) in accordance with the embodiments described above. 
       FIG.  14    is a schematic block diagram of a radio access node  1400  according to some embodiments of the present disclosure. Optional features are represented by dashed boxes. The radio access node  1400  may be, for example, a base station  102  or  106  or a network node that implements all or part of the functionality of the base station  102  or gNB described herein. As illustrated, the radio access node  1400  includes a control system  1402  that includes one or more processors  1404  (e.g., Central Processing Units (CPUs), Application Specific Integrated Circuits (ASICs), Field Programmable Gate Arrays (FPGAs), and/or the like), memory  1406 , and a network interface  1408 . The one or more processors  1404  are also referred to herein as processing circuitry. In addition, the radio access node  1400  may include one or more radio units  1410  that each includes one or more transmitters  1412  and one or more receivers  1414  coupled to one or more antennas  1416 . The radio units  1410  may be referred to or be part of radio interface circuitry. In some embodiments, the radio unit(s)  1410  is external to the control system  1402  and connected to the control system  1402  via, e.g., a wired connection (e.g., an optical cable). However, in some other embodiments, the radio unit(s)  1410  and potentially the antenna(s)  1416  are integrated together with the control system  1402 . The one or more processors  1404  operate to provide one or more functions of a radio access node  1400  as described herein. In some embodiments, the function(s) are implemented in software that is stored, e.g., in the memory  1406  and executed by the one or more processors  1404 . 
       FIG.  15    is a schematic block diagram that illustrates a virtualized embodiment of the radio access node  1400  according to some embodiments of the present disclosure. This discussion is equally applicable to other types of network nodes. Further, other types of network nodes may have similar virtualized architectures. Again, optional features are represented by dashed boxes. 
     As used herein, a “virtualized” radio access node is an implementation of the radio access node  1400  in which at least a portion of the functionality of the radio access node  1400  is implemented as a virtual component(s) (e.g., via a virtual machine(s) executing on a physical processing node(s) in a network(s)). As illustrated, in this example, the radio access node  1400  may include the control system  1402  and/or the one or more radio units  1410 , as described above. The control system  1402  may be connected to the radio unit(s)  1410  via, for example, an optical cable or the like. The radio access node  1400  includes one or more processing nodes  1500  coupled to or included as part of a network(s)  1502 . If present, the control system  1402  or the radio unit(s) are connected to the processing node(s)  1500  via the network  1502 . Each processing node  1500  includes one or more processors  1504  (e.g., CPUs, ASICs, FPGAs, and/or the like), memory  1506 , and a network interface  1508 . 
     In this example, functions  1510  of the radio access node  1400  described herein are implemented at the one or more processing nodes  1500  or distributed across the one or more processing nodes  1500  and the control system  1402  and/or the radio unit(s)  1410  in any desired manner. In some particular embodiments, some or all of the functions  1510  of the radio access node  1400  described herein are implemented as virtual components executed by one or more virtual machines implemented in a virtual environment(s) hosted by the processing node(s)  1500 . As will be appreciated by one of ordinary skill in the art, additional signaling or communication between the processing node(s)  1500  and the control system  1402  is used in order to carry out at least some of the desired functions  1510 . Notably, in some embodiments, the control system  1402  may not be included, in which case the radio unit(s)  1410  communicate directly with the processing node(s)  1500  via an appropriate network interface(s). 
     In some embodiments, a computer program including instructions which, when executed by at least one processor, causes the at least one processor to carry out the functionality of radio access node  1400  or a node (e.g., a processing node  1500 ) implementing one or more of the functions  1510  of the radio access node  1400  in a virtual environment according to any of the embodiments described herein is provided. In some embodiments, a carrier comprising the aforementioned computer program product is provided. The carrier is one of an electronic signal, an optical signal, a radio signal, or a computer readable storage medium (e.g., a non-transitory computer readable medium such as memory). 
       FIG.  16    is a schematic block diagram of the radio access node  1400  according to some other embodiments of the present disclosure. The radio access node  1400  includes one or more modules  1600 , each of which is implemented in software. The module(s)  1600  provide the functionality of the radio access node  1400  described herein. This discussion is equally applicable to the processing node  1500  of  FIG.  15    where the modules  1600  may be implemented at one of the processing nodes  1500  or distributed across multiple processing nodes  1500  and/or distributed across the processing node(s)  1500  and the control system  1402 . 
       FIG.  17    is a schematic block diagram of a wireless communication device  1700  according to some embodiments of the present disclosure. As illustrated, the wireless communication device  1700  includes one or more processors  1702  (e.g., CPUs, ASICs, FPGAs, and/or the like), memory  1704 , and one or more transceivers  1706  each including one or more transmitters  1708  and one or more receivers  1710  coupled to one or more antennas  1712 . The transceiver(s)  1706  includes radio-front end circuitry connected to the antenna(s)  1712  that is configured to condition signals communicated between the antenna(s)  1712  and the processor(s)  1702 , as will be appreciated by on of ordinary skill in the art. The processors  1702  are also referred to herein as processing circuitry. The transceivers  1706  are also referred to herein as radio circuitry. In some embodiments, the functionality of the wireless communication device  1700  described above may be fully or partially implemented in software that is, e.g., stored in the memory  1704  and executed by the processor(s)  1702 . Note that the wireless communication device  1700  may include additional components not illustrated in  FIG.  17    such as, e.g., one or more user interface components (e.g., an input/output interface including a display, buttons, a touch screen, a microphone, a speaker(s), and/or the like and/or any other components for allowing input of information into the wireless communication device  1700  and/or allowing output of information from the wireless communication device  1700 ), a power supply (e.g., a battery and associated power circuitry), etc. 
     In some embodiments, a computer program including instructions which, when executed by at least one processor, causes the at least one processor to carry out the functionality of the wireless communication device  1700  according to any of the embodiments described herein is provided. In some embodiments, a carrier comprising the aforementioned computer program product is provided. The carrier is one of an electronic signal, an optical signal, a radio signal, or a computer readable storage medium (e.g., a non-transitory computer readable medium such as memory). 
       FIG.  18    is a schematic block diagram of the wireless communication device  1700  according to some other embodiments of the present disclosure. The wireless communication device  1700  includes one or more modules  1800 , each of which is implemented in software. The module(s)  1800  provide the functionality of the wireless communication device  1700  described herein. 
     With reference to  FIG.  19   , in accordance with an embodiment, a communication system includes a telecommunication network  1900 , such as a 3GPP-type cellular network, which comprises an access network  1902 , such as a RAN, and a core network  1904 . The access network  1902  comprises a plurality of base stations  1906 A,  1906 B,  1906 C, such as Node Bs, eNBs, gNBs, or other types of wireless Access Points (APs), each defining a corresponding coverage area  1908 A,  1908 B,  1908 C. Each base station  1906 A,  1906 B,  1906 C is connectable to the core network  1904  over a wired or wireless connection  1910 . A first UE  1912  located in coverage area  1908 C is configured to wirelessly connect to, or be paged by, the corresponding base station  1906 C. A second UE  1914  in coverage area  1908 A is wirelessly connectable to the corresponding base station  1906 A. While a plurality of UEs  1912 ,  1914  are illustrated in this example, the disclosed embodiments are equally applicable to a situation where a sole UE is in the coverage area or where a sole UE is connecting to the corresponding base station  1906 . 
     The telecommunication network  1900  is itself connected to a host computer  1916 , which may be embodied in the hardware and/or software of a standalone server, a cloud-implemented server, a distributed server, or as processing resources in a server farm. The host computer  1916  may be under the ownership or control of a service provider, or may be operated by the service provider or on behalf of the service provider. Connections  1918  and  1920  between the telecommunication network  1900  and the host computer  1916  may extend directly from the core network  1904  to the host computer  1916  or may go via an optional intermediate network  1922 . The intermediate network  1922  may be one of, or a combination of more than one of, a public, private, or hosted network; the intermediate network  1922 , if any, may be a backbone network or the Internet; in particular, the intermediate network  1922  may comprise two or more sub-networks (not shown). 
     The communication system of  FIG.  19    as a whole enables connectivity between the connected UEs  1912 ,  1914  and the host computer  1916 . The connectivity may be described as an Over-the-Top (OTT) connection  1924 . The host computer  1916  and the connected UEs  1912 ,  1914  are configured to communicate data and/or signaling via the OTT connection  1924 , using the access network  1902 , the core network  1904 , any intermediate network  1922 , and possible further infrastructure (not shown) as intermediaries. The OTT connection  1924  may be transparent in the sense that the participating communication devices through which the OTT connection  1924  passes are unaware of routing of uplink and downlink communications. For example, the base station  1906  may not or need not be informed about the past routing of an incoming downlink communication with data originating from the host computer  1916  to be forwarded (e.g., handed over) to a connected UE  1912 . Similarly, the base station  1906  need not be aware of the future routing of an outgoing uplink communication originating from the UE  1912  towards the host computer  1916 . 
     Example implementations, in accordance with an embodiment, of the UE, base station, and host computer discussed in the preceding paragraphs will now be described with reference to  FIG.  20   . In a communication system  2000 , a host computer  2002  comprises hardware  2004  including a communication interface  2006  configured to set up and maintain a wired or wireless connection with an interface of a different communication device of the communication system  2000 . The host computer  2002  further comprises processing circuitry  2008 , which may have storage and/or processing capabilities. In particular, the processing circuitry  2008  may comprise one or more programmable processors, ASICs, FPGAs, or combinations of these (not shown) adapted to execute instructions. The host computer  2002  further comprises software  2010 , which is stored in or accessible by the host computer  2002  and executable by the processing circuitry  2008 . The software  2010  includes a host application  2012 . The host application  2012  may be operable to provide a service to a remote user, such as a UE  2014  connecting via an OTT connection  2016  terminating at the UE  2014  and the host computer  2002 . In providing the service to the remote user, the host application  2012  may provide user data which is transmitted using the OTT connection  2016 . 
     The communication system  2000  further includes a base station  2018  provided in a telecommunication system and comprising hardware  2020  enabling it to communicate with the host computer  2002  and with the UE  2014 . The hardware  2020  may include a communication interface  2022  for setting up and maintaining a wired or wireless connection with an interface of a different communication device of the communication system  2000 , as well as a radio interface  2024  for setting up and maintaining at least a wireless connection  2026  with the UE  2014  located in a coverage area (not shown in  FIG.  20   ) served by the base station  2018 . The communication interface  2022  may be configured to facilitate a connection  2028  to the host computer  2002 . The connection  2028  may be direct or it may pass through a core network (not shown in  FIG.  20   ) of the telecommunication system and/or through one or more intermediate networks outside the telecommunication system. In the embodiment shown, the hardware  2020  of the base station  2018  further includes processing circuitry  2030 , which may comprise one or more programmable processors, ASICs, FPGAs, or combinations of these (not shown) adapted to execute instructions. The base station  2018  further has software  2032  stored internally or accessible via an external connection. 
     The communication system  2000  further includes the UE  2014  already referred to. The UE&#39;s  2014  hardware  2034  may include a radio interface  2036  configured to set up and maintain a wireless connection  2026  with a base station serving a coverage area in which the UE  2014  is currently located. The hardware  2034  of the UE  2014  further includes processing circuitry  2038 , which may comprise one or more programmable processors, ASICs, FPGAs, or combinations of these (not shown) adapted to execute instructions. The UE  2014  further comprises software  2040 , which is stored in or accessible by the UE  2014  and executable by the processing circuitry  2038 . The software  2040  includes a client application  2042 . The client application  2042  may be operable to provide a service to a human or non-human user via the UE  2014 , with the support of the host computer  2002 . In the host computer  2002 , the executing host application  2012  may communicate with the executing client application  2042  via the OTT connection  2016  terminating at the UE  2014  and the host computer  2002 . In providing the service to the user, the client application  2042  may receive request data from the host application  2012  and provide user data in response to the request data. The OTT connection  2016  may transfer both the request data and the user data. The client application  2042  may interact with the user to generate the user data that it provides. 
     It is noted that the host computer  2002 , the base station  2018 , and the UE  2014  illustrated in  FIG.  20    may be similar or identical to the host computer  1916 , one of the base stations  1906 A,  1906 B,  1906 C, and one of the UEs  1912 ,  1914  of  FIG.  19   , respectively. This is to say, the inner workings of these entities may be as shown in  FIG.  20    and independently, the surrounding network topology may be that of  FIG.  19   . 
     In  FIG.  20   , the OTT connection  2016  has been drawn abstractly to illustrate the communication between the host computer  2002  and the UE  2014  via the base station  2018  without explicit reference to any intermediary devices and the precise routing of messages via these devices. The network infrastructure may determine the routing, which may be configured to hide from the UE  2014  or from the service provider operating the host computer  2002 , or both. While the OTT connection  2016  is active, the network infrastructure may further take decisions by which it dynamically changes the routing (e.g., on the basis of load balancing consideration or reconfiguration of the network). 
     The wireless connection  2026  between the UE  2014  and the base station  2018  is in accordance with the teachings of the embodiments described throughout this disclosure. One or more of the various embodiments improve the performance of OTT services provided to the UE  2014  using the OTT connection  2016 , in which the wireless connection  2026  forms the last segment. 
     A measurement procedure may be provided for the purpose of monitoring data rate, latency, and other factors on which the one or more embodiments improve. There may further be an optional network functionality for reconfiguring the OTT connection  2016  between the host computer  2002  and the UE  2014 , in response to variations in the measurement results. The measurement procedure and/or the network functionality for reconfiguring the OTT connection  2016  may be implemented in the software  2010  and the hardware  2004  of the host computer  2002  or in the software  2040  and the hardware  2034  of the UE  2014 , or both. In some embodiments, sensors (not shown) may be deployed in or in association with communication devices through which the OTT connection  2016  passes; the sensors may participate in the measurement procedure by supplying values of the monitored quantities exemplified above, or supplying values of other physical quantities from which the software  2010 ,  2040  may compute or estimate the monitored quantities. The reconfiguring of the OTT connection  2016  may include message format, retransmission settings, preferred routing, etc.; the reconfiguring need not affect the base station  2018 , and it may be unknown or imperceptible to the base station  2018 . Such procedures and functionalities may be known and practiced in the art. In certain embodiments, measurements may involve proprietary UE signaling facilitating the host computer  2002 &#39;s measurements of throughput, propagation times, latency, and the like. The measurements may be implemented in that the software  2010  and  2040  causes messages to be transmitted, in particular empty or ‘dummy’ messages, using the OTT connection  2016  while it monitors propagation times, errors, etc. 
       FIG.  21    is a flowchart illustrating a method implemented in a communication system, in accordance with one embodiment. The communication system includes a host computer, a base station, and a UE which may be those described with reference to  FIGS.  19  and  20   . For simplicity of the present disclosure, only drawing references to  FIG.  21    will be included in this section. In step  2100 , the host computer provides user data. In sub-step  2102  (which may be optional) of step  2100 , the host computer provides the user data by executing a host application. In step  2104 , the host computer initiates a transmission carrying the user data to the UE. In step  2106  (which may be optional), the base station transmits to the UE the user data which was carried in the transmission that the host computer initiated, in accordance with the teachings of the embodiments described throughout this disclosure. In step  2108  (which may also be optional), the UE executes a client application associated with the host application executed by the host computer. 
       FIG.  22    is a flowchart illustrating a method implemented in a communication system, in accordance with one embodiment. The communication system includes a host computer, a base station, and a UE which may be those described with reference to  FIGS.  19  and  20   . For simplicity of the present disclosure, only drawing references to  FIG.  22    will be included in this section. In step  2200  of the method, the host computer provides user data. In an optional sub-step (not shown) the host computer provides the user data by executing a host application. In step  2202 , the host computer initiates a transmission carrying the user data to the UE. The transmission may pass via the base station, in accordance with the teachings of the embodiments described throughout this disclosure. In step  2204  (which may be optional), the UE receives the user data carried in the transmission. 
       FIG.  23    is a flowchart illustrating a method implemented in a communication system, in accordance with one embodiment. The communication system includes a host computer, a base station, and a UE which may be those described with reference to  FIGS.  19  and  20   . For simplicity of the present disclosure, only drawing references to  FIG.  23    will be included in this section. In step  2300  (which may be optional), the UE receives input data provided by the host computer. Additionally or alternatively, in step  2302 , the UE provides user data. In sub-step  2304  (which may be optional) of step  2300 , the UE provides the user data by executing a client application. In sub-step  2306  (which may be optional) of step  2302 , the UE executes a client application which provides the user data in reaction to the received input data provided by the host computer. In providing the user data, the executed client application may further consider user input received from the user. Regardless of the specific manner in which the user data was provided, the UE initiates, in sub-step  2308  (which may be optional), transmission of the user data to the host computer. In step  2310  of the method, the host computer receives the user data transmitted from the UE, in accordance with the teachings of the embodiments described throughout this disclosure. 
       FIG.  24    is a flowchart illustrating a method implemented in a communication system, in accordance with one embodiment. The communication system includes a host computer, a base station, and a UE which may be those described with reference to  FIGS.  19  and  20   . For simplicity of the present disclosure, only drawing references to  FIG.  24    will be included in this section. In step  2400  (which may be optional), in accordance with the teachings of the embodiments described throughout this disclosure, the base station receives user data from the UE. In step  2402  (which may be optional), the base station initiates transmission of the received user data to the host computer. In step  2404  (which may be optional), the host computer receives the user data carried in the transmission initiated by the base station. 
       FIG.  25    is a flow chart that illustrates the operation of a base station  102  in accordance with at least some of the embodiments described herein (e.g., in Sections 1, 2, and/or 3 above). Optional steps are represented by dashed lines/boxes. As illustrated, the base station  102  sends, to a wireless communication device  112 , a configuration of a first PUCCH resource for a SR occasion (referred to herein as a SR PUCCH resource) and a second PUCCH resource for HARQ-ACK information (referred to herein as HARQ-ACK PUCCH resource) (step  2500 ). As described above, the SR PUCCH resource and the HARQ-ACK PUCCH resource at least partially overlap in time. The base station  102  receives a PUCCH transmission from the wireless device  112  on a PUCCH resource, where the PUCCH transmission includes either a SR for the SR occasion for which the SR PUCCH resource is configured, HARQ-ACK information scheduled for the HARQ-ACK PUCCH resource, or both. For this PUCCH transmission, any embodiment of the prioritization or multiplexing of SR and HARQ-ACK information described above (e.g., in Section 1, 2, or 3) is used. As such, the details above regarding these embodiments as they pertain to the operation of the base station  102  are equally applicable here. 
     Any appropriate steps, methods, features, functions, or benefits disclosed herein may be performed through one or more functional units or modules of one or more virtual apparatuses. Each virtual apparatus may comprise a number of these functional units. These functional units may be implemented via processing circuitry, which may include one or more microprocessor or microcontrollers, as well as other digital hardware, which may include Digital Signal Processor (DSPs), special-purpose digital logic, and the like. The processing circuitry may be configured to execute program code stored in memory, which may include one or several types of memory such as Read Only Memory (ROM), Random Access Memory (RAM), cache memory, flash memory devices, optical storage devices, etc. Program code stored in memory includes program instructions for executing one or more telecommunications and/or data communications protocols as well as instructions for carrying out one or more of the techniques described herein. In some implementations, the processing circuitry may be used to cause the respective functional unit to perform corresponding functions according one or more embodiments of the present disclosure. 
     While processes in the figures may show a particular order of operations performed by certain embodiments of the present disclosure, it should be understood that such order is exemplary (e.g., alternative embodiments may perform the operations in a different order, combine certain operations, overlap certain operations, etc.). 
     Some example embodiments of the present disclosure are as follows: 
     GROUP A EMBODIMENTS 
     Embodiment 1: A method performed by a wireless communication device ( 112 ) for prioritization between a Scheduling Request, SR, occasion and Hybrid Automatic Repeat Request Acknowledgment, HARQ-ACK, bits scheduled on overlapping Physical Uplink Control Channel, PUCCH, resources, the method comprising: prioritizing or multiplexing ( 202 ;  302 ;  402 ;  1302 ) a SR occasion (e.g., using PUCCH format 0) on a first PUCCH resource and HARQ-ACK information (e.g., using PUCCH format 1) on a second PUCCH resource, the first PUCCH resource and the second PUCCH resource at least partially overlapping in time. 
     Embodiment 2: The method of embodiment 1 wherein the SR occasion uses PUCCH format 0, and the HARQ-ACK information uses PUCCH format 1. 
     Embodiment 3: The method of embodiment 1 or 2 wherein prioritizing or multiplexing ( 202 ;  302 ;  1302 ) the SR occasion on the first PUCCH resource and the HARQ-ACK information on the second PUCCH resource comprises:
         determining ( 202 A;  302 A) that a SR for the SR occasion is a negative SR; and
           responsive to determining ( 202 A;  302 A) that the SR for the SR occasion is a negative SR:
               dropping ( 204 A) the SR occasion; and   transmitting ( 204 B) one or more HARQ-ACK bits on the second PUCCH resource using PUCCH format 1.   
               
               

     Embodiment 4: The method of embodiment 1 or 2 wherein prioritizing or multiplexing ( 202 ;  302 ;  1302 ) the SR occasion on the first PUCCH resource and the HARQ-ACK information on the second PUCCH resource comprises:
         determining ( 202 A) that a SR for the SR occasion is not a negative SR; and   responsive to determining ( 202 A) that the SR for the SR occasion is not a negative SR:
           determining ( 202 B) whether one or more HARQ-ACK bits to be transmitted satisfy one or more conditions;   responsive to determining ( 202 B, YES) that the one or more HARQ-ACK bits to be transmitted satisfy the one or more conditions:
               dropping ( 204 C) the one or more HARQ-ACK bits; and   transmitting ( 204 D) the SR on the first PUCCH resource using PUCCH format 0.   
               
               

     Embodiment 5: The method of embodiment 4 wherein, responsive to determining ( 202 B, NO) that the one or more HARQ-ACK bits to be transmitted do not satisfy the one or more conditions: dropping ( 204 A) the SR occasion; and transmitting ( 204 B) one or more HARQ-ACK bits on the second PUCCH resource using PUCCH format 1. 
     Embodiment 6: The method of embodiment 4 or 5 wherein the one or more conditions comprise: a condition that the one or more HARQ-ACK bits indicates all ACK; a condition that the one or more HARQ-ACK bits indicates all NACK; a condition that at least one of the one or more HARQ-ACK bits indicates ACK; or a condition that at least one of the HARQ-ACK bits indicates NACK. 
     Embodiment 7: The method of embodiment 1 or 2 wherein prioritizing or multiplexing ( 202 ;  302 ;  1302 ) the SR occasion on the first PUCCH resource and the HARQ-ACK information on the second PUCCH resource comprises:
         determining ( 202 A) that a SR for the SR occasion is not a negative SR; and   responsive to determining ( 202 A) that the SR for the SR occasion is not a negative SR:
           dropping ( 204 C) the one or more HARQ-ACK bits; and   transmitting ( 204 D) the SR on the first PUCCH resource using PUCCH format 0.   
               

     Embodiment 8: The method of embodiment 1 or 2 wherein prioritizing or multiplexing ( 202 ;  302 ;  1302 ) the SR occasion on the first PUCCH resource and the HARQ-ACK information on the second PUCCH resource comprises:
         determining ( 302 A) that a SR for the SR occasion is not a negative SR; and   responsive to determining ( 302 A) that the SR for the SR occasion is not a negative SR:
           dropping ( 304 C) the SR occasion; and   transmitting ( 304 D) one or more HARQ-ACK bits on the second PUCCH resource using PUCCH format 1, while using a cyclic shift that is different from an initially scheduled cyclic shift.   
               

     Embodiment 9: The method of embodiment 1 or 2 wherein prioritizing or multiplexing ( 202 ;  302 ;  402 ;  1302 ) the SR occasion on the first PUCCH resource and the HARQ-ACK information on the second PUCCH resource comprises multiplexing ( 402 ) the SR and one or more HARQ-ACK bits on the first PUCCH resource by using a cyclic shift for a sequence used for the SR, the cyclic shift being a function of the one or more HARQ-ACK bits. 
     Embodiment 10: The method of embodiment 1 or 2 wherein prioritizing or multiplexing ( 202 ;  302 ;  1302 ) the SR occasion on the first PUCCH resource and the HARQ-ACK information on the second PUCCH resource comprises: multiplexing ( 1302 ) a SR and one or more HARQ-ACK bits on one of the first PUCCH resource, the second PUCCH resource, or a modified PUCCH resource. 
     Embodiment 11: The method of embodiment 10 wherein multiplexing ( 1302 ) the SR and the one or more HARQ-ACK bits on the second PUCCH resource by appending ( 1302 A) information that indicates the SR (e.g., a first bit) to HARQ-feedback information (e.g., a second bit) that serves as an indication of the one or more HARQ-ACK bits. 
     Embodiment 12: The method of embodiment 10 wherein multiplexing ( 1302 ) the SR and the one or more HARQ-ACK bits comprises multiplexing the SR and the one or more HARQ-ACK bits on the second PUCCH resource using a cyclic shift. 
     Embodiment 13: The method of embodiment 10 wherein multiplexing ( 1302 ) the SR and the one or more HARQ-ACK bits comprises multiplexing the SR and the one or more HARQ-ACK bits on a modified PUCCH resource. 
     Embodiment 14: The method of any of the previous embodiments, further comprising: providing user data; and forwarding the user data to a host computer via the transmission to the base station. 
     Group B Embodiments 
     Embodiment 15: A method performed by a base station for prioritization between a Scheduling Request, SR, occasion and Hybrid Automatic Repeat Request Acknowledgment, HARQ-ACK, bits scheduled on overlapping Physical Uplink Control Channel, PUCCH, resources, the method comprising: receiving uplink control information on a PUCCH resource, the UCI comprising a SR, one or more HARQ-ACK bits, or information that represents both the SR and the one or more HARQ-ACK bits, in accordance with a prioritization or multiplexing scheme; wherein the PUCCH resource is either: (a) a first PUCCH resource scheduled or configured for the SR, (b) a second PUCCH resource scheduled or configured for the one or more HARQ-ACK bits, or (c) a modified PUCCH resource; wherein the first PUCCH resource and the second PUCCH resource at least partially overlap in time. 
     Embodiment 16: The method of any of the previous embodiments, further comprising: obtaining user data; and forwarding the user data to a host computer or a wireless communication device. 
     Group C Embodiments 
     Embodiment 17: A wireless communication device comprising: processing circuitry configured to perform any of the steps of any of the Group A embodiments; and power supply circuitry configured to supply power to the wireless communication device. 
     Embodiment 18: A base station comprising: processing circuitry configured to perform any of the steps of any of the Group B embodiments; and power supply circuitry configured to supply power to the base station. 
     Embodiment 19: A User Equipment, UE, comprising: an antenna configured to send and receive wireless signals; radio front-end circuitry connected to the antenna and to processing circuitry, and configured to condition signals communicated between the antenna and the processing circuitry; the processing circuitry being configured to perform any of the steps of any of the Group A embodiments; an input interface connected to the processing circuitry and configured to allow input of information into the UE to be processed by the processing circuitry; an output interface connected to the processing circuitry and configured to output information from the UE that has been processed by the processing circuitry; and a battery connected to the processing circuitry and configured to supply power to the UE. 
     Embodiment 20: A communication system including a host computer comprising: processing circuitry configured to provide user data; and a communication interface configured to forward the user data to a cellular network for transmission to a User Equipment, UE; wherein the cellular network comprises a base station having a radio interface and processing circuitry, the base station&#39;s processing circuitry configured to perform any of the steps of any of the Group B embodiments. 
     Embodiment 21: The communication system of the previous embodiment further including the base station. 
     Embodiment 22: The communication system of the previous 2 embodiments, further including the UE, wherein the UE is configured to communicate with the base station. 
     Embodiment 23: The communication system of the previous 3 embodiments, wherein: the processing circuitry of the host computer is configured to execute a host application, thereby providing the user data; and the UE comprises processing circuitry configured to execute a client application associated with the host application. 
     Embodiment 24: A method implemented in a communication system including a host computer, a base station, and a User Equipment, UE, the method comprising: at the host computer, providing user data; and at the host computer, initiating a transmission carrying the user data to the UE via a cellular network comprising the base station, wherein the base station performs any of the steps of any of the Group B embodiments. 
     Embodiment 25: The method of the previous embodiment, further comprising, at the base station, transmitting the user data. 
     Embodiment 26: The method of the previous 2 embodiments, wherein the user data is provided at the host computer by executing a host application, the method further comprising, at the UE, executing a client application associated with the host application. 
     Embodiment 27: A User Equipment, UE, configured to communicate with a base station, the UE comprising a radio interface and processing circuitry configured to perform the method of the previous 3 embodiments. 
     Embodiment 28: A communication system including a host computer comprising: processing circuitry configured to provide user data; and a communication interface configured to forward user data to a cellular network for transmission to a User Equipment, UE; wherein the UE comprises a radio interface and processing circuitry, the UE&#39;s components configured to perform any of the steps of any of the Group A embodiments. 
     Embodiment 29: The communication system of the previous embodiment, wherein the cellular network further includes a base station configured to communicate with the UE. 
     Embodiment 30: The communication system of the previous 2 embodiments, wherein: the processing circuitry of the host computer is configured to execute a host application, thereby providing the user data; and the UE&#39;s processing circuitry is configured to execute a client application associated with the host application. 
     Embodiment 31: A method implemented in a communication system including a host computer, a base station, and a User Equipment, UE, the method comprising: at the host computer, providing user data; and at the host computer, initiating a transmission carrying the user data to the UE via a cellular network comprising the base station, wherein the UE performs any of the steps of any of the Group A embodiments. 
     Embodiment 32: The method of the previous embodiment, further comprising at the UE, receiving the user data from the base station. 
     Embodiment 33: A communication system including a host computer comprising: communication interface configured to receive user data originating from a transmission from a User Equipment, UE, to a base station; wherein the UE comprises a radio interface and processing circuitry, the UE&#39;s processing circuitry configured to perform any of the steps of any of the Group A embodiments. 
     Embodiment 34: The communication system of the previous embodiment, further including the UE. 
     Embodiment 35: The communication system of the previous 2 embodiments, further including the base station, wherein the base station comprises a radio interface configured to communicate with the UE and a communication interface configured to forward to the host computer the user data carried by a transmission from the UE to the base station. 
     Embodiment 36: The communication system of the previous 3 embodiments, wherein: the processing circuitry of the host computer is configured to execute a host application; and the UE&#39;s processing circuitry is configured to execute a client application associated with the host application, thereby providing the user data. 
     Embodiment 37: The communication system of the previous 4 embodiments, wherein: the processing circuitry of the host computer is configured to execute a host application, thereby providing request data; and the UE&#39;s processing circuitry is configured to execute a client application associated with the host application, thereby providing the user data in response to the request data. 
     Embodiment 38: A method implemented in a communication system including a host computer, a base station, and a User Equipment, UE, the method comprising: at the host computer, receiving user data transmitted to the base station from the UE, wherein the UE performs any of the steps of any of the Group A embodiments. 
     Embodiment 39: The method of the previous embodiment, further comprising, at the UE, providing the user data to the base station. 
     Embodiment 40: The method of the previous 2 embodiments, further comprising: at the UE, executing a client application, thereby providing the user data to be transmitted; and at the host computer, executing a host application associated with the client application. 
     Embodiment 41: The method of the previous 3 embodiments, further comprising: at the UE, executing a client application; and at the UE, receiving input data to the client application, the input data being provided at the host computer by executing a host application associated with the client application; wherein the user data to be transmitted is provided by the client application in response to the input data. 
     Embodiment 42: A communication system including a host computer comprising a communication interface configured to receive user data originating from a transmission from a User Equipment, UE, to a base station, wherein the base station comprises a radio interface and processing circuitry, the base station&#39;s processing circuitry configured to perform any of the steps of any of the Group B embodiments. 
     Embodiment 43: The communication system of the previous embodiment further including the base station. 
     Embodiment 44: The communication system of the previous 2 embodiments, further including the UE, wherein the UE is configured to communicate with the base station. 
     Embodiment 45: The communication system of the previous 3 embodiments, wherein: the processing circuitry of the host computer is configured to execute a host application; and the UE is configured to execute a client application associated with the host application, thereby providing the user data to be received by the host computer. 
     Embodiment 46: A method implemented in a communication system including a host computer, a base station, and a User Equipment, UE, the method comprising: at the host computer, receiving, from the base station, user data originating from a transmission which the base station has received from the UE, wherein the UE performs any of the steps of any of the Group A embodiments. 
     Embodiment 47: The method of the previous embodiment, further comprising at the base station, receiving the user data from the UE. 
     Embodiment 48: The method of the previous 2 embodiments, further comprising at the base station, initiating a transmission of the received user data to the host computer. 
     Those skilled in the art will recognize improvements and modifications to the embodiments of the present disclosure. All such improvements and modifications are considered within the scope of the concepts disclosed herein.