Patent Description:
<NUM> NR includes services associated with enhanced mobile broadband (eMBB), massive machine type communication (mMTC), and ultra-reliable low-latency communication (URLLC). However, there still exists a need for further improvements in <NUM> NR technology.

US patent application <CIT> discloses receiving from a user device a request to reconfigure already-active uplink semi-persistent scheduling, wherein the request includes information related to a proposed adjustment of a time-interval parameter. A base station may reconfigure the already-active uplink SPS based on the received information.

International patent application <CIT> discloses receiving, by a user equipment, information about a semi-persistent scheduling (SPS) transmission period, checking information about the number of SPS repetitions, and receiving new SPS data repeatedly transmitted in every SPS transmission period based on the SPS transmission period and the number of SPS repetitions.

US patent <CIT> discloses techniques for improving how SPS intervals are changed. A network node determines that the SPS interval is to be changed, generates a message element comprising an indicator of the new SPS interval, and transmits a signal comprising the message element to a wireless device over a user plane.

The following presents a simplified summary of one or more aspects to provide a basic understanding of such aspects. This summary is not an extensive overview of all contemplated aspects and is intended to neither identify key or critical elements of all aspects nor delineate the scope of any or all aspects.

In some instances, well known structures and components are shown in block diagram form to avoid obscuring such concepts.

A semi-persistent scheduling (SPS) may provide for the scheduling of a periodic communication (e.g., an uplink communication or a downlink communication) for a user equipment (UE). Specifically, in wireless communication, the base station may schedule UEs using various scheduling mechanisms. As discussed above, one such mechanism is referred to as SPS. When a base station schedules a UE with SPS, the base station may allocate resources at once and let the UE use these resources instead of allocating the resources more periodically. In other words, the base station may assign a predefined amount of resources to a UE with a certain periodicity. Therefore, the UE is not required to request resources during each transmission time interval (TTI), thus saving control plan overhead at the base station. Thus, a base station may provide initial configuration information identifying an SPS configuration, and the UE may transmit or receive a communication in accordance with the SPS configuration. When scheduled semi-persistently, the UE may need to monitor a physical downlink control channel in every subframe since the base station may activate/reactivate/release SPS at any time using downlink control information DCI ("Activation DCI").

In some aspects, a UE may receive control information that overrides an SPS configuration. For example, if a physical downlink control channel (PDCCH) schedules a physical downlink shared channel (PDSCH) that at least partially overlaps with an SPS PDSCH, the beam of the SPS PDSCH may be overwritten by the beam used or indicated by the overriding PDCCH. This may be useful, for example, when the scheduling entity determines that an updated beam configuration may provide improved performance for reception of the SPS PDSCH. However, signaling the overriding PDCCH configuration for each occasion of an SPS PDSCH may cause significant signaling overhead, reducing efficiency of resource allocation.

A UE may also receive information from the base station reconfiguring an SPS PDSCH transmission configuration indication (TCI) states. For example, this information may include a media access control (MAC) control element (CE), downlink control information (DCI), and/or the like. The information may indicate an updated TCI state for an SPS communication. However, in some instances, the UE may not be capable of immediately implementing the updated TCI state (e.g., due to antenna limitations, radio frequency chain limitations, and/or the like). If a TCI state is indicated without enough time to implement the TCI state, reception performance of the corresponding PDSCH may suffer.

Some techniques and apparatuses described herein provide dynamic reconfiguration of virtual search spaces. For example, a virtual search space, and the corresponding virtual control resource set CORESETs (e.g., including the respective QCL parameters of the virtual CORESETs) may be indicated using lower-layer signaling than radio resource control (RRC), such as DCI or a MAC-CE. Thus, latency associated with the reconfiguration of virtual search spaces and/or CORESETs may be reduced by using lower layer signaling, thereby enabling improved performance of the UE with regard to an SPS communication. In some aspects, the above operations may be applied for a non-persistent communication (e.g., a dynamically scheduled communication, a one-off communication, and/or the like).

By reconfiguring the DCI or MAC-CE, any parameter associated with SPS communication (e.g., downlink or uplink) may be reconfigured, including but not limited to beam indication, modulation and coding schemes (MCS), rank, precoding matrix index, allocated time/frequency resource, period, offset, etc.). Aspects of the present disclosure provide two techniques to modify the format of the reconfigured DCI/MAC-CE. In the first example, aspects of the present disclosure may reuse existing SPS Activation DCI format with minor modifications to signal to the UE that the base station has reconfigured one or more configuration parameters. In a second example not covered by the appended claims, aspects of the present disclosure introduce a new DCI/MAC-CE format for SPS reconfiguration with either fixed or dynamic definitions for one or more fields, where each field may carry one reconfigured parameter value. Additionally, reconfigured parameters for SPS/CG can also include resource repetition and location offset in each period.

Accordingly, in one or more example examples, the functions described may be implemented in hardware, software, or any combination thereof.

<FIG> is a diagram illustrating an example of a wireless communication system and an access network <NUM>. The wireless communication system (also referred to as a wireless wide area network (WWAN)) includes base stations <NUM>, UEs <NUM>, an Evolved Packet Core (EPC) <NUM>, and another core network <NUM> (e.g., a <NUM> Core (5GC)).

The base stations <NUM> configured for <NUM> LTE (collectively referred to as Evolved Universal Mobile Telecommunication System (UMTS) Terrestrial Radio Access Network (E-UTRAN)) may interface with the EPC <NUM> through backhaul links <NUM> (e.g., S1 interface). The base stations <NUM> configured for <NUM> NR (collectively referred to as Next Generation RAN (NG-RAN)) may interface with core network <NUM> and/or EPC <NUM> through backhaul links <NUM>, <NUM>, <NUM>, which may be wired or wireless. In an aspect, for example, an EN-DC configuration may utilize an LTE master cell group (MCG) and EPC <NUM> to support communication between the UE <NUM> and base stations <NUM> configured for <NUM> NR. The base stations <NUM> configured for <NUM> NR may establish a backhaul link (e.g., S1 bearer) directly with the serving gateway <NUM> of the EPC or via a master eNB (i.e., a base station <NUM> configured for <NUM> LTE). Accordingly, a UE <NUM> may establish a <NUM> NR connection with a <NUM> access network even if a 5GC is not deployed. Although the following description may be focused on <NUM> NR and LTE, the concepts described herein may be applicable to other similar areas, such as, LTE-A, CDMA, GSM, and other wireless technologies.

In some examples, the base station <NUM> may include an SPS management component <NUM> for scheduling one or more UEs for SPS such that the eNB may allocate resources at once and let the UE use the allocated resources for downlink and uplink communication instead of allocating resources more periodically. In some examples, the SPS management component <NUM> may also be implemented for reconfiguring the DCI/MAC-CE format in accordance with aspects of the present disclosure discussed herein. Additionally, the UE <NUM> may receive DCI/MAC-CE message from the base station <NUM> and determine whether the received message is an activation DCI or a reconfiguration DCI, and configure the UE for SPS communication accordingly based on the determining. In some examples, the UE <NUM> may include a UE SPS component <NUM> for receiving a command to activate SPS on the UE; operating the UE under the current SPS in the absence of a new activation, re-activation; second receiving a command to modify, without releasing, the operating SPS; adjusting the UE configuration in response to the received command to modify; and second operating the UE under the adjusted configuration. The UE SPS component <NUM> is described in additional detail below.

The base stations <NUM> may communicate directly or indirectly (e.g., through the EPC <NUM> or core network <NUM>) with each other over backhaul links <NUM> (e.g., X2 interface).

D2D communication may be through a variety of wireless D2D communication systems, such as for example, FlashLinQ, WiMedia, Bluetooth, ZigBee, Wi-Fi based on the IEEE <NUM> standard, LTE, or NR.

The wireless communication system may further include a Wi-Fi access point (AP) <NUM> in communication with Wi-Fi stations (STAs) <NUM> via communication links <NUM> in a <NUM> unlicensed frequency spectrum.

Communication using the mmW / near mmW radio frequency band (e.g., <NUM> - <NUM>) has extremely high path loss and a short range.

The base station <NUM> / UE <NUM> may perform beam training to determine receive and transmit directions for each of the base station <NUM> / UE <NUM>.

The MBMS Gateway <NUM> may be used to distribute MBMS traffic to the base stations <NUM> belonging to a Multicast Broadcast Single Frequency Network (MBSFN) area broadcasting a particular service, and may be responsible for session management (start/stop) and for collecting MBMS related charging information.

The AMF <NUM> provides QoS flow and session management.

Some of the UEs <NUM> may be referred to as loT devices (e.g., parking meter, gas pump, toaster, vehicles, heart monitor, etc.). The UE <NUM> may also be referred to as a station, a mobile station, a subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a mobile device, a wireless device, a wireless communication device, a remote device, a mobile subscriber station, an access terminal, a mobile terminal, a wireless terminal, a remote terminal, a handset, a user agent, a mobile client, a client, or some other suitable terminology.

<FIG> is an example flowchart <NUM> of reconfiguration of one or more parameters associated with SPS based on the reconfigured DCI/MAC-CE in accordance with various aspects of the present disclosure.

At block <NUM>, the base station <NUM> may transmit configuration information identifying a virtual CORESET or a virtual search space. For example, the base station <NUM> may transmit this information using DCI, a MAC-CE, and/or the like. The configuration information may include any information identifying or modifying a configuration for a virtual search space. By utilizing the DCI or MAC-CE, any parameter associated with SPS communication (e.g., downlink or uplink) may be reconfigured.

Aspects of the present disclosure provide two techniques to modify the format of the reconfigured DCI/MAC-CE. In the first example, aspects of the present disclosure may reuse existing SPS Activation DCI format with minor modifications to signal to the UE that the base station has reconfigured one or more configuration parameters. Specifically, as discussed above, for SPS communication, the base station may allocate resources for the UE at once and let the UE use these resources for subsequent periodic traffic instead of allocating the resources more periodically. In other words, the base station may assign a predefined amount of resources to a UE with a certain periodicity. Therefore, the UE is not required to request resources during each TTI, thus saving control plan overhead at the base station. Thus, a base station may provide initial configuration information identifying an SPS configuration, and the UE may transmit or receive a communication in accordance with the SPS configuration. When scheduled semi-persistently, the UE may need to monitor a physical downlink control channel in every subframe since the eNB may activate/re-activate/release SPS at any time using downlink control information DCI.

As such, in the first example, aspects of the present disclosure leverage this existing Activation DCI message format to further signal reconfiguration of one or more reconfigured parameters associated with SPS communication (e.g., beam indication, MCS, rank, precoding matrix index, allocated time/frequency resource, period, offset, etc.). The existing Activation DCI message includes invalid values that are unassigned. For example, the hybrid automatic repeat request (HARQ) process number with all "<NUM>" is currently unused and may be utilized to signal a reconfigured parameter for SPS. In other examples, the DCI may indicate BWP switching, but with corresponding time domain resource allocation that is less than the UE required BWP switching latency. In additional example, the DCI may indicate beam switching, but with corresponding time domain resource allocation less than UE required beam switching latency. It should be appreciated that each of the above examples may be used individually or jointly with any combination. In some examples, a new RNTI scrambling the CRC of the reconfiguration DCI can be used.

As such, values associated with the remaining fields in the reconfiguration DCI may be either the same as those in the activation DCI (e.g., values different from previous reconfiguration/activation DCI are those parameters to be updated) or at least some of the values can be redefined. Thus, the differentiator between the existing value definition and the new value definition may indicate different definitions. For example, the HARQ process number <NUM> may indicate that remaining fields carry the updated PDSCH TCI state, and the HARQ process number <NUM> may indicate that remaining fields carry the updated PDSCH MCS.

In a second example not covered by the appended claims, an aspect of the present disclosure may introduce a new DCI format or new MAC-CE for SPS/CG reconfiguration. In such instance, the fields of the new format may have either fixed definitions where each field may carry one reconfigured parameter value which may or may not be the same as previous operating value, or at least part of the fields may have dynamic definitions. An indicator associated with the new DCI / MAC-CE format may signal which updated parameter values are carried and allow the UE to be configured according for SPS communication.

At block <NUM>, the UE may determine whether the received DCI or MAC-CE is an activation DCI or a reconfiguration DCI based at least in part on the format of the DCI. At block <NUM>, the UE may configure the UE for downlink SPS communication based at least in part on the determination. At block <NUM>, the base station <NUM> may transmit an SPS traffic based on reconfigured parameters indicated in the prior DCI or MAC-CE.

<FIG> is a timing diagram <NUM> of a reconfigured DCI <NUM> being transmitted during an SPS period <NUM> and the reconfigured parameters being activated in accordance with various aspects of the present disclosure. Specifically, in some aspects the base station may schedule the UE for SPS communication based on an initial SPS DCI <NUM> that may activate SPS communication. However, in some instances, during the SPS period <NUM>, the base station may determine to transmit a reconfigured DCI <NUM> message to the UE. In such instance, the A/N rule may be utilized for SPS deactivation DCI.

For example, the UE, upon receiving the reconfigured DCI <NUM>, may transmit A/N <NUM> on PUCCH that indicates parameters that are already activated (e.g., reconfigured TCI state is already activated by MAC-CE). In such instance, the reconfigured SPS parameters may be activated at the end of the A/N <NUM> for subsequent SPS communication. However, if the A/N does not indicate any parameters that are already activated, the base station and the UE may wait a predetermined time period from the end of the A/N <NUM> (e.g., <NUM>) prior to activating the reconfigured parameters for subsequent SPS communication.

<FIG> is a conceptual diagram <NUM> of reconfigurable parameters for SPS/CG that allow the base station and the UE to coordinate resource repetition and location offset in each transmission period. For example, in the first instance, if during the initial transmission period the first UE is unable to receive the downlink PDSCH <NUM>, aspects of the present disclosure allow reconfiguration of the SPS parameters on a per cycle basis such that for subsequent SPS period, the resources allocated by the base station for the UE may be offset and provided repetition, when necessary without unduly adjusting the allocation of all resources. For instance, with respect to the illustrated example, the reconfiguration for the SPS may allow "UE N" and the first UE ("UE1") to switch positions <NUM> and the first UE may be provided resource repetition due to unsuccessful initial transmission. It would be appreciated that the repetition may be across different beams for improved robustness. However, such reconfiguration would not impact the resource allocation for the remaining UEs and thus would minimize disruption on the network.

<FIG> is a flowchart of an example method <NUM> of wireless communication. The method <NUM> may be performed by the base station <NUM> and/or components thereof.

At block <NUM>, the method <NUM> may determining, at a base station, to modify at least one parameter associated with semi-persistent scheduling (SPS) of traffic for one or more user equipments (UEs). In some examples, the at least one parameter that is modified may include one or more of resource repetition or location offset in each transmission period. In other examples, the at least one parameter may include one or more of beam indication, modulation and coding schemes (MCS), rank, precoding matrix index, allocated time/frequency resource, period, location offset, resource repetition or location offset. Aspects of block <NUM> may be performed by SPS management component <NUM> described with reference to <FIG>.

At block <NUM>, the method <NUM> may include generating a reconfiguration control message to transmit to the one or more UEs to signal the modification of the at least one parameter, wherein the reconfiguration control message is one of a reconfigured downlink control information (DCI) that modifies activation DCI or a redesigned DCI or MAC-CE format. In some examples, the reconfigured DCI that modifies activation DCI utilizes invalid values that are not allocated by the activation DCI to signal that the base station has modified the at least one parameter associated with the SPS. In other examples, the redesigned DCI or MAC-CE format includes fields that have either fixed or dynamic definitions such that each field would carry at least one reconfiguration parameter value. Aspects of block <NUM> may be performed by SPS management component <NUM> described with reference to <FIG>.

At block <NUM>, the method <NUM> may include transmitting the reconfiguration control message to the one or more UEs. Aspects of block <NUM> may be performed by transceiver <NUM> described with reference to <FIG>.

The accompanying method claims present elements of the various blocks in a sample order and are not meant to be limited to the specific order or hierarchy presented.

Aspects of the technology disclosed herein can be viewed as components providing means for performing the function of each particular component. For example, referring to <FIG>, and continuing to refer to prior figures for context, the base station <NUM> may include a SPS Management Component <NUM>. The SPS Management Component <NUM> may include a determining component <NUM>, a generating component <NUM>, and a transmitting component <NUM>.

In some examples, the determining component <NUM> may be configured to, or may comprise means for, determining, at a base station, to modify at least one parameter associated with SPS of traffic for one or more UEs. The generating component <NUM> may be configured to, or may comprise means for, generating a reconfiguration control message to transmit to the one or more UEs to signal the modification of the at least one parameter, wherein the reconfiguration control message is one of a reconfigured downlink control information (DCI) that modifies an activation DCI or a redesigned format for DCI or MAC-CE. The transmitting component <NUM> may be configured to, or may comprise means for, transmitting the reconfiguration control message to the one or more UEs.

Referring to <FIG>, one example <NUM> of an implementation of base station <NUM> may include a variety of components, some of which have already been described above, but including components such as one or more processors <NUM> and memory <NUM> and transceiver <NUM> in communication via one or more buses <NUM>, which may operate in conjunction with modem <NUM> and SPS management component <NUM> to enable one or more of the functions described herein related to selectively using dual connectivity. Further, the one or more processors <NUM>, modem <NUM>, memory <NUM>, transceiver <NUM>, RF front end <NUM> and one or more antennas <NUM> may be configured to support voice or data calls (simultaneously or non-simultaneously) in one or more radio access technologies.

In an aspect, the one or more processors <NUM> may include a modem <NUM> that uses one or more modem processors. The various functions related to SPS management component <NUM> may be included in modem <NUM> or processors <NUM> and, in an aspect, may be executed by a single processor, while in other aspects, different ones of the functions may be executed by a combination of two or more different processors. For example, in an aspect, the one or more processors <NUM> may include any one or any combination of a modem processor, or a baseband processor, or a digital signal processor, or a transmit processor, or a receiver processor, or a transceiver processor associated with transceiver <NUM>. In other aspects, some of the features of the one or more processors <NUM> or modem <NUM> associated with SPS management component <NUM> may be performed by transceiver <NUM>.

Also, memory <NUM> may be configured to store data used herein or local versions of applications <NUM>, SPS management component <NUM> or one or more of subcomponents thereof being executed by at least one processor <NUM>. Memory <NUM> may include any type of computer-readable medium usable by a computer or at least one processor <NUM>, such as random access memory (RAM), read only memory (ROM), tapes, magnetic discs, optical discs, volatile memory, non-volatile memory, and any combination thereof. In an aspect, for example, memory <NUM> may be a non-transitory computer-readable storage medium that stores one or more computer-executable codes defining SPS management component <NUM> or one or more of subcomponents thereof, or data associated therewith, when base station <NUM> is operating at least one processor <NUM> to execute SPS management component <NUM> or one or more subcomponents thereof.

Receiver <NUM> may include hardware, firmware, or software code executable by a processor for receiving data, the code including instructions and being stored in a memory (such as a computer-readable medium). Additionally, receiver <NUM> may process such received signals, and also may obtain measurements of the signals, such as, but not limited to, Energy per chip to Interference power ratio (Ec/Io), SNR, reference signal received power (RSRP), received signal strength indicator (RSSI), etc. Transmitter <NUM> may include hardware, firmware, or software code executable by a processor for transmitting data, the code including instructions and being stored in a memory (such as computer-readable medium).

Moreover, in an aspect, base station <NUM> may include RF front end <NUM>, which may operate in communication with one or more antennas <NUM> and transceiver <NUM> for receiving and transmitting radio transmissions, for example, wireless communication transmitted by at least one base station <NUM> or wireless transmissions transmitted by base station <NUM>. RF front end <NUM> may be connected to one or more antennas <NUM> and may include one or more low-noise amplifiers (LNAs) <NUM>, one or more switches <NUM>, one or more power amplifiers (PAs) <NUM>, and one or more filters <NUM> for transmitting and receiving RF signals.

In an aspect, LNA <NUM> may amplify a received signal at a desired output level.

Also, for example, one or more filters <NUM> may be used by RF front end <NUM> to filter a received signal to obtain an input RF signal. Similarly, in an aspect, for example, a respective filter <NUM> may be used to filter an output from a respective PA <NUM> to produce an output signal for transmission. In an aspect, each filter <NUM> may be connected to a specific LNA <NUM> or PA <NUM>. In an aspect, RF front end <NUM> may use one or more switches <NUM> to select a transmit or receive path using a specified filter <NUM>, LNA <NUM>, or PA <NUM>, based on a configuration as specified by transceiver <NUM> or processor <NUM>.

In an aspect, transceiver <NUM> may be tuned to operate at specified frequencies such that base station <NUM> can communicate with, for example, one or more UEs <NUM> or one or more cells associated with one or more UEs <NUM>. In an aspect, for example, modem <NUM> may configure transceiver <NUM> to operate at a specified frequency and power level based on the base station configuration of the base station <NUM> and the communication protocol used by modem <NUM>.

In an aspect, modem <NUM> may be a multiband-multimode modem, which can process digital data and communicate with transceiver <NUM> such that the digital data is sent and received using transceiver <NUM>. In an aspect, modem <NUM> may be multiband and be configured to support multiple frequency bands for a specific communication protocol. In an aspect, modem <NUM> may be multimode and be configured to support multiple operating networks and communication protocols. In an aspect, modem <NUM> may control one or more components of UE <NUM> (such as RF front end <NUM>, transceiver <NUM>) to enable transmission or reception of signals from the network based on a specified modem configuration. In an aspect, the modem configuration may be based on the mode of the modem and the frequency band in use. In another aspect, the modem configuration may be based on UE configuration information associated with UE <NUM> as provided by the network during cell selection or cell reselection.

Thus, the claims are not intended to be limited to the aspects shown herein, but is to be accorded the full scope consistent with the language claims, wherein reference to an element in the singular is not intended to mean "one and only one" unless specifically so stated, but rather "one or more. " The word "exemplary" is used herein to mean "serving as an example, instance, or illustration. Unless specifically stated otherwise, the term "some" refers to one or more. Combinations such as "at least one of A, B, or C," "one or more of A, B, or C," "at least one of A, B, and C," "one or more of A, B, and C," and "A, B, C, or any combination thereof" include any combination of A, B, and/or C, and may include multiples of A, multiples of B, or multiples of C. Specifically, combinations such as "at least one of A, B, or C," "one or more of A, B, or C," "at least one of A, B, and C," "one or more of A, B, and C," and "A, B, C, or any combination thereof" may be A only, B only, C only, A and B, A and C, B and C, or A and B and C, where any such combinations may contain one or more member or members of A, B, or C. The words "module," "mechanism," "element," "device," and the like may not be a substitute for the word "means. " As such, no claim element is to be construed as a means plus function unless the element is expressly recited using the phrase "means for.

Referring to <FIG>, and continuing to refer to prior figures for context, methods for wireless communication are illustrated, in accordance with examples of the technology disclosed herein. In such methods a UE receives a command to activate semi-persistent scheduling (SPS) on the UE - Block <NUM>. For example, UE <NUM> had previously received an SPS configuration command from base station <NUM> at the time of dedicated bearer establishment for a VoIP service under an SPS Radio Network Temporary Identifier (RNTI). Use of a configured SPS requires activation. This configuration causes the UE to monitor PDCCH with CRC scrambled by the SPS RNTI for activation, re-activation, or release of the SPS via DCI.

The UE operates under the activated SPS - Block <NUM>. Continuing with the present example, the UE continues to monitor PDCCH with CRC scrambled by the SPS RNTI for activation, re-activation, or release of the SPS via DCI. However, the UE receives no new activation or a reactivation or a release of the SPS.

The UE second receives a command to modify, without releasing or re-activating the operating SPS, at least one parameter of the operating SPS - Block <NUM>. In the continuing example, the command to modify is included in a reconfigured DCI that modifies an activation DCI and modifies a beam indication of the UE. The reconfigured DCI utilizes previously invalid values that are not allocated by the activation DCI, thus signaling that the base station has modified the at least one parameter associated with the operating SPS.

The UE adjusts UE configuration in response to the received command to modify - Block <NUM>. In the continuing example, the UE adjusts the beam indication in accordance with the received command to modify. The UE second operates under the activated the SPS using the adjusted UE configuration - Block <NUM>. In the continuing example, the UE uses the adjusted beam indication for receiving subsequent transmissions from the base station for the SPS RNTI.

Aspects of the technology disclosed herein can be viewed as components providing means for performing the function of each particular component. For example, referring to <FIG>, and continuing to refer to prior figures for context, the UE <NUM> may include a UE SPS Component <NUM>. The UE SPS Component <NUM> may include a receiving component <NUM>, an operating component <NUM>, a second receiving component <NUM>, and adjusting component <NUM>, and a second operating component <NUM>.

In some examples, the receiving component <NUM> may be configured to, or may comprise means for, receiving a command to activate SPS on the UE. The operating component <NUM> may be configured to, or may comprise means for, operating the UE under the current SPS in the absence of a new activation, re-activation. The second receiving component <NUM> may be configured to, or may comprise means for, second receiving a command to modify, without releasing the operating SPS, at least one parameter of the operating SPS. The adjusting component <NUM> may be configured to, or may comprise means for, adjusting the UE configuration in response to the received command to modify. The second operating component <NUM> may be configured to, or may comprise means for, second operating under the activated SPS using the adjusted UE configuration.

Referring to <FIG>, one example of an implementation of UE <NUM> may include a variety of components, some of which have already been described above in conjunction with the role of each component in the base station <NUM>, including components such as one or more processors <NUM> and memory <NUM> and transceiver <NUM> in communication via one or more buses <NUM>, which may operate in conjunction with modem <NUM> and/or US SPS component <NUM> for communicating, as described further herein. Each performs a similar role in UE <NUM>.

In an aspect, the one or more processors <NUM> can include a modem <NUM> and/or can be part of the modem <NUM> that uses one or more modem processors. Thus, the various functions related to UE SPS component <NUM> may be included in modem <NUM> and/or processors <NUM> and, in an aspect, can be executed by a single processor, while in other aspects, different ones of the functions may be executed by a combination of two or more different processors. For example, in an aspect, the one or more processors <NUM> may include any one or any combination of a modem processor, or a baseband processor, or a digital signal processor, or a transmit processor, or a receiver processor, or a transceiver processor associated with transceiver <NUM>. In other aspects, some of the features of the one or more processors <NUM> and/or modem <NUM> associated with UE SPS component <NUM> may be performed by transceiver <NUM>.

Claim 1:
A method of wireless communication, comprising:
determining (<NUM>), at a base station (<NUM>), to modify at least one parameter associated with semi-persistent scheduling, SPS, of traffic for one or more user equipments, UEs (<NUM>);
generating (<NUM>) a reconfiguration control message to transmit to the one or more UEs (<NUM>) to signal the modification of the at least one parameter, wherein the reconfiguration control message is a reconfigured downlink control information, DCI, that modifies an activation DCI utilizing invalid values that are not allocated by the activation DCI in order to signal that the base station (<NUM>) has modified the at least one parameter associated with the SPS; and
transmitting (<NUM>) the reconfiguration control message (<NUM>,<NUM>) to the one or more UEs (<NUM>).