Patent Description:
The subject matter disclosed herein relates generally to wireless communications and more particularly relates to multiple radio access technology communications.

In certain wireless communications networks, multiple RATs may be used.

<NPL>, notes that a NR V2X study item focuses on <NUM> use cases for advanced V2X services identified by SA1, which are categorized into four use case groups: vehicles platooning, extended sensors, advanced driving and remote driving. One of the objectives of the NR V2X is for QoS management. QoS management from the RAN2 perspective is discussed.

<CIT> discloses a method for sidelink data duplication. The method includes: determining whether a sidelink data packet is to be duplicated based on a sidelink radio bearer on which the sidelink data packet is to be transmitted; and performing sidelink data duplication of the sidelink data packet when it is determined that the sidelink data packet is to be duplicated based on the sidelink radio bearer.

<NPL>, discusses the QoS design issues for broadcast, multicast and unicast V2X communications used in NR V2X sidelink communication.

<FIG> depicts an embodiment of a wireless communication system <NUM> for multiple radio access technology communications. In one embodiment, the wireless communication system <NUM> includes remote units <NUM> and network units <NUM>. Even though a specific number of remote units <NUM> and network units <NUM> are depicted in <FIG>, one of skill in the art will recognize that any number of remote units <NUM> and network units <NUM> may be included in the wireless communication system <NUM>.

In one embodiment, the remote units <NUM> may include computing devices, such as desktop computers, laptop computers, personal digital assistants ("PDAs"), tablet computers, smart phones, smart televisions (e.g., televisions connected to the Internet), set-top boxes, game consoles, security systems (including security cameras), vehicle on-board computers, network devices (e.g., routers, switches, modems), aerial vehicles, drones, or the like. The remote units <NUM> may communicate directly with one or more of the network units <NUM> via UL communication signals. In certain embodiments, the remote units <NUM> may communicate directly with other remote units <NUM> via sidelink communication.

In various embodiments, a remote unit <NUM> may receive, from a first radio access technology, resources for a second radio access technology. In certain embodiments, the remote unit <NUM> may receive, from the first radio access technology, sidelink radio bearer configuration information. Accordingly, the remote unit <NUM> may be used for multiple radio access technology communications.

In some embodiments, a network unit <NUM> may transmit, from a first radio access technology, resources for a second radio access technology. In various embodiments, the network unit <NUM> may transmit, from the first radio access technology, sidelink radio bearer configuration information. Accordingly, the network unit <NUM> may be used for multiple radio access technology communications.

<FIG> depicts one embodiment of an apparatus <NUM> that may be used for multiple radio access technology communications. The apparatus <NUM> includes one embodiment of the remote unit <NUM>. Furthermore, the remote unit <NUM> may include a processor <NUM>, a memory <NUM>, an input device <NUM>, a display <NUM>, a transmitter <NUM>, and a receiver <NUM>. In some embodiments, the input device <NUM> and the display <NUM> are combined into a single device, such as a touchscreen. In certain embodiments, the remote unit <NUM> may not include any input device <NUM> and/or display <NUM>. In various embodiments, the remote unit <NUM> may include one or more of the processor <NUM>, the memory <NUM>, the transmitter <NUM>, and the receiver <NUM>, and may not include the input device <NUM> and/or the display <NUM>.

The transmitter <NUM> is used to provide UL communication signals to the network unit <NUM> and the receiver <NUM> is used to receive DL communication signals from the network unit <NUM>, as described herein. In some embodiments, the receiver <NUM> may: receive, from a first radio access technology, resources for a second radio access technology; and receive, from the first radio access technology, sidelink radio bearer configuration information.

<FIG> depicts one embodiment of an apparatus <NUM> that may be used for multiple radio access technology communications. The apparatus <NUM> includes one embodiment of the network unit <NUM>. Furthermore, the network unit <NUM> may include a processor <NUM>, a memory <NUM>, an input device <NUM>, a display <NUM>, a transmitter <NUM>, and a receiver <NUM>. As may be appreciated, the processor <NUM>, the memory <NUM>, the input device <NUM>, the display <NUM>, the transmitter <NUM>, and the receiver <NUM> may be substantially similar to the processor <NUM>, the memory <NUM>, the input device <NUM>, the display <NUM>, the transmitter <NUM>, and the receiver <NUM> of the remote unit <NUM>, respectively.

In various embodiments, the transmitter <NUM> may: transmit, from a first radio access technology, resources for a second radio access technology; and transmit, from the first radio access technology, sidelink radio bearer configuration information.

Although only one transmitter <NUM> and one receiver <NUM> are illustrated, the network unit <NUM> may have any suitable number of transmitters <NUM> and receivers <NUM>.

In some embodiments, two resource allocation modes may be used for each of NR and LTE V2X communication. The two resource allocation modes for LTE may be referred to as Mode <NUM> and Mode <NUM>; and the two resource allocation modes for NR may be referred to as Mode <NUM> and Mode <NUM>. These modes may support direct V2X communications but may differ on how they allocate the radio resources. In certain embodiments, the cellular network allocates resources (e.g., a gNB allocates Mode-<NUM> resources and an eNB allocates Mode-<NUM> resources). In various embodiments, if Mode-<NUM> and Mode-<NUM> are used, these modes may not require cellular coverage, and vehicles may autonomously select their radio resources using a distributed scheduling scheme supported by congestion control mechanisms from pre-configured resource pools. In some embodiments, a RAN for in-coverage UEs may allocate Mode-<NUM> and Mode-<NUM> resources. In certain embodiments, Mode-<NUM> and/or Mode <NUM> may be considered a baseline mode and may represent an alternative to <NUM>. 11p or DSRC.

In various embodiments, all resource allocation modes may satisfy latency requirements, may accommodate high Doppler spreads, and/or may accommodate a high density of vehicles for V2X communications. In some embodiments, Mode-<NUM> and Mode-<NUM> may use a centralized RAN (e.g., a gNB and/or an eNB) scheduler. In certain embodiments, a vehicular UE and RAN may use a Uu interface to communicate (e.g., sending a BSR and/or SR from a transmitting V2X UE to the RAN and receiving in response a SL grant on PDCCH (DCI)). In various embodiments, Mode-<NUM> and Mode-<NUM> may use a PC5 interface that facilitates direct LTE SL communications between two vehicular UEs and/or may use distributed UE scheduling. In some embodiments, V2X Mode-<NUM> and Mode-<NUM> may operate without infrastructure support although the UEs may be in RAN coverage. In such embodiments, resources may be shared with a Uu uplink. In certain embodiments, such as in LTE V2X, only broadcast type transmission may be supported, while in other embodiments, such as in in NR, V2X unicast and groupcast transmissions may be supported.

In some embodiments, a cross-RAT V2X PC5 may be used. In such embodiments, LTE coverage may be used to control NR PC5 using network scheduled mode of operation. In various embodiments, a NR (e.g., gNB) controlling LTE PC5 may be used both for network scheduled and UE autonomous modes of operation.

<FIG> is a schematic block diagram illustrating one embodiment of communications <NUM> for cross RAT V2X resource allocation in an NS Mode. The communications <NUM> described herein may include one or more messages. The communications <NUM> include communications between a UE <NUM> and a RAT-<NUM> serving cell <NUM> (e.g., a first RAT).

In a first communication <NUM> transmitted between the UE <NUM> and the RAT-<NUM> serving cell <NUM>, ongoing Uu connection messages are transmitted and received.

In a second communication <NUM> transmitted from the UE <NUM> to the RAT-<NUM> serving cell <NUM>, the UE <NUM> transmits an interest indication to the RAT-<NUM> serving cell <NUM>. The interest indication may be used by the UE <NUM> to request V2X resource in RAT-<NUM> (e.g., a second RAT). In the second communication <NUM>, the UE <NUM> may include PC5 QoS profiles (e.g., a VQI, a 5QI, a PPPP, and/or a PPPR) that are transmitted to the RAT-<NUM> serving cell <NUM>.

In a third communication <NUM> transmitted from the RAT-<NUM> serving cell <NUM> to the UE <NUM>, the RAT-<NUM> serving cell <NUM> provides configured resources (e.g., SPS and/or grant free Type <NUM>/Type <NUM>), an SLRB configuration for each of the indicated PC5 QoS profiles, and/or an indication that a pre-configuration (e.g., configuration) may be used (e.g., by not including any SLRB configuration). In certain embodiments, the UE <NUM> configures a PC5 radio bearer on a RAT based on the information received from the RAT-<NUM> serving cell <NUM> and may start data transmission and/or reception using the PC5 radio bearer.

<FIG> is a schematic block diagram illustrating one embodiment of communications <NUM> for cross RAT V2X resource allocation in a UE Autonomous Mode. The communications <NUM> described herein may include one or more messages. The communications <NUM> include communications between a UE <NUM> and a RAT-<NUM> serving cell <NUM> (e.g., a first RAT).

In a second communication <NUM> transmitted from the RAT-<NUM> serving cell <NUM> to the UE <NUM>, the RAT-<NUM> serving cell <NUM> may perform a network broadcast of PC5 resources for RAT-<NUM> (e.g., a second RAT), an SLRB configuration for each supported PC5 QoS profile for which the SLRB configuration is provided assuming minimum mandatory capability for cross RAT communication of a NR V2X UE, and/or an explicit indication (e.g., a Boolean indicating) that indicates that no SLRB configuration is provided by the RAT-<NUM> serving cell <NUM> or that SLRB configurations are provided by a serving cell for the RAT-<NUM> using RRC dedicated signaling only. If the explicit indication indicates that no SLRB configuration is provided by the RAT-<NUM> serving cell <NUM>, the UE <NUM> may use an SLRB pre-configuration corresponding to each PC5 QoS profiles for which data is available for transmission in the UE <NUM>. If the explicit indication indicates that SLRB configurations are provided by a serving cell for the RAT-<NUM> using RRC dedicated signaling only, the UE <NUM> may send an interest indication to the serving cell for the RAT-<NUM> using RRC signaling and the network may then respond with an SLRB configuration corresponding to each indicated PC5 QoS profile. If the UE <NUM> is not RRC connected, a transition to an RRC connected state may be initiated to facilitate transmission of the interest indication.

Based on the network response, the UE <NUM> may make <NUM> a determination (e.g., decision) of which SLRB configuration to use and may configure one or more SLRBs accordingly.

In certain embodiments, the UE <NUM> configures <NUM> a PC5 radio bearer on an RAT and starts data transmission and/or reception on the PC5 radio bearer.

In various embodiments, Mode <NUM> and/or Mode <NUM> cross RAT resource allocation for configured (e.g., SPS and/or configured grant Type <NUM>) resources using only RRC signaling may be accomplished by a network providing the network scheduled configured resources through RRC signaling for cross-RAT V2X communication and by the network implicitly and/or explicitly indicating if an L2 and/or L1 configuration is provided by a RAN node for cross-RAT V2X communication. In such embodiments, the UE may use a pre-configured and/or specified L2 and/or L1 configuration if it is not provided by a serving cell for cross-RAT V2X communication.

In some embodiments, a UE uses an on-demand system information request to a serving cell of RAT-<NUM> if scheduling information of the cell in SIB1 indicates that PC5 resources and/or SLRB configuration for RAT2 may be provided in a corresponding SIB. The on-demand system information may not be broadcast system information.

In certain embodiments, a RAT-<NUM> receives an SLRB configuration for each supported PC5 QoS profile (e.g., VQI and/or 5QI) from an operation and maintenance ("O&M") entity or from a RAT-<NUM> cell.

In various embodiments, a pre-configuration described herein may refer to a pre-provisioned SLRB configuration for each supported PC5 QoS profile (e.g., VQI and/or 5QI). In some embodiments, a pre-configuration described herein may refer to a specified SLRB configuration for each supported PC5 QoS profile (e.g., VQI and/or 5QI).

<FIG> is a flow chart diagram illustrating one embodiment of a method <NUM> for multiple radio access technology communications. In some embodiments, the method <NUM> is performed by an apparatus, such as the remote unit <NUM>. In certain embodiments, the method <NUM> may be performed by a processor executing program code, for example, a microcontroller, a microprocessor, a CPU, a GPU, an auxiliary processing unit, a FPGA, or the like.

In various embodiments, the method <NUM> includes receiving <NUM>, from a first radio access technology, resources for a second radio access technology. In certain embodiments, the method <NUM> includes receiving <NUM>, from the first radio access technology, sidelink radio bearer configuration information.

In certain embodiments, the method <NUM> further comprises transmitting an interest indication that indicates a request for vehicle to everything resources in the second radio access technology. In some embodiments, the resources for the second radio access technology and the sidelink radio bearer configuration information are received in response to transmitting the interest indication. In various embodiments, the interest indication comprises one or more quality of service profiles.

In one embodiment, the one or more quality of services profiles comprise a vehicular quality index, a fifth generation quality of service indicator, a prose per packet priority, a prose per packet reliability, or some combination thereof. In certain embodiments, the interest indication comprises an on-demand system information request. In some embodiments, the resources for the second radio access technology comprise semi-persistent scheduling resources, grant-free resources, or a combination thereof.

In various embodiments, the sidelink radio bearer configuration information comprises a sidelink radio bearer configuration for each quality of service profile of one or more quality of service profiles. In one embodiment, the sidelink radio bearer configuration information comprises an indication to use preconfigured information for sidelink communication. In certain embodiments, the method <NUM> further comprises configuring a radio bearer on a radio access technology based on the resources for the second radio access technology, the sidelink radio bearer configuration information, or a combination thereof.

In some embodiments, the method <NUM> further comprises transmitting data on the radio bearer. In various embodiments, the method <NUM> further comprises receiving data on the radio bearer. In one embodiment, the resources for the second radio access technology and the sidelink radio bearer configuration information are received by a network broadcast.

<FIG> is a flow chart diagram illustrating another embodiment of a method <NUM> for multiple radio access technology communications. In some embodiments, the method <NUM> is performed by an apparatus, such as the network unit <NUM>. In certain embodiments, the method <NUM> may be performed by a processor executing program code, for example, a microcontroller, a microprocessor, a CPU, a GPU, an auxiliary processing unit, a FPGA, or the like.

In various embodiments, the method <NUM> includes transmitting <NUM>, from a first radio access technology, resources for a second radio access technology. In various embodiments, the method <NUM> includes transmitting <NUM>, from the first radio access technology, sidelink radio bearer configuration information.

In certain embodiments, the method <NUM> further comprises receiving an interest indication that indicates a request for vehicle to everything resources in the second radio access technology. In some embodiments, the resources for the second radio access technology and the sidelink radio bearer configuration information are received in response to transmitting the interest indication. In various embodiments, the interest indication comprises one or more quality of service profiles.

Claim 1:
A user equipment, UE, (<NUM>, <NUM>, <NUM>) for wireless communication, comprising: at least one memory (<NUM>); and at least one processor (<NUM>) coupled with the at least one memory (<NUM>) and configured to cause the UE (<NUM>, <NUM>, <NUM>) to:
receive (<NUM>), via a first radio access technology, RAT, resources for a second RAT; and
receive (<NUM>), via the first RAT, sidelink radio bearer, SLRB, configuration information for each quality of service, QoS, profile of a plurality of QoS profiles for sidelink communication on the second RAT, wherein each QoS profile comprises at least one of a vehicular quality index, VQI, and/or a QoS indicator.