CN-116134915-B - Interaction of multicast bandwidth part (BWP) with multiple BWPs

Abstract

Embodiments include systems, methods, and devices for radio resource allocation to support multicast services in a network such as a fifth generation (5G) New Radio (NR) (5G NR) or the like. In some embodiments, the method may be performed by a processor of a base station. In some embodiments, the method may be performed by a processor of a wireless device. Various embodiments may include configuring two or more Downlink (DL) frequency resources within a carrier bandwidth for multicast communications. Various embodiments may include selecting DL frequency resources for multicast communication from the two or more DL frequency resources for multicast communication based at least in part on an active DL bandwidth portion (BWP) of the wireless device to monitor multicast data transmissions from the base station.

Inventors

• A. Rico Alvarino
• K. Bamboo field
• LIU LE

Assignees

• 高通股份有限公司

Dates

Publication Date

20260508

Application Date

20210805

Priority Date

20210804

Claims (20)

1. 1. A method performed by a processor of a wireless device for radio resource allocation to receive a multicast service, comprising: Receiving an indication of two or more downlink DL frequency resources for multicast communication from a base station, wherein the indication of the two or more DL frequency resources for multicast communication is for indicating a one-to-one mapping between each of the two or more DL frequency resources for multicast communication and a corresponding DL BWP configured within a carrier bandwidth, wherein the two or more DL frequency resources for multicast communication comprise a plurality of sets of two or more DL frequency resources for multicast communication, and each of the plurality of sets is associated with a different service; Selecting DL frequency resources for multicast communication from the two or more DL frequency resources for multicast communication from the base station based at least in part on the active DL bandwidth portion BWP to monitor multicast data transmissions from the base station, and Multicast data transmissions from the base station are monitored in DL frequency resources selected for multicast communications.
2. 2. The method of claim 1, wherein selecting the DL frequency resources for multicast communication from the two or more DL frequency resources for multicast communication based at least in part on the active DL BWP to monitor multicast data transmissions from the base station comprises: Determining the active DL BWP; Determining a digital scheme of the active DL BWP, and The DL frequency resources for multicast communication that are fully contained within and/or have the same digital scheme as the active DL BWP are selected from the two or more DL frequency resources for multicast communication from the base station to monitor multicast data transmissions from the base station.
3. 3. The method of claim 1, wherein receiving the indication of the two or more DL frequency resources for multicast communications from the base station comprises receiving the indication of the two or more DL frequency resources for multicast communications from the base station in a unicast radio resource control, RRC, message.
4. 4. The method of claim 1, the two or more DL frequency resources for multicast communications from the base station comprising: at least a first DL frequency resource associated with a multicast control channel for multicast communications from the base station, and At least a second DL frequency resource associated with a multicast traffic channel for multicast communications from the base station.
5. 5. The method of claim 1, further comprising: determining a feedback configuration for the active DL BWP, and Multicast feedback data is sent to the base station according to the feedback configuration for the active DL BWP.
6. 6. The method of claim 1, further comprising: Receiving an indication of two or more uplink, UL, frequency resources for multicast communications, and Multicast feedback data is sent to the base station using at least one UL frequency resource of the two or more UL frequency resources for multicast communications.
7. 7. The method of claim 6, wherein one of the two or more UL frequency resources for multicasting is selected for use in transmitting the multicast feedback data to the base station based at least in part on the active DL BWP.
8. 8. The method of claim 1, wherein selecting the DL frequency resources for multicast communication from the two or more DL frequency resources for multicast communication from the base station based at least in part on the active DL BWP to monitor multicast data transmissions from the base station comprises selecting the DL frequency resources for multicast communication from the two or more DL frequency resources for multicast communication from the base station to monitor multicast data transmissions from the base station based at least in part on the active DL BWP and a selection of one of the different services.
9. 9. The method of claim 1, wherein each of the two or more DL frequency resources for multicast communication has a different configuration, and the different configuration is a different set of search spaces or a different physical channel configuration.
10. 10. A method performed by a processor of a base station for radio resource allocation to support multicast services, comprising: Configuring two or more downlink DL frequency resources for multicast communication within a carrier bandwidth such that there is a one-to-one mapping between each DL frequency resource for multicast communication and each of the two or more DL bandwidth portions BWP configured within the carrier bandwidth; Transmitting, to one or more wireless devices in communication with the base station, an indication of the two or more DL frequency resources for multicast communication, wherein more than one of the two or more DL frequency resources is configured to be selected for multicast communication by each of the one or more wireless devices based at least in part on active DL BWP, wherein the indication of the two or more DL frequency resources for multicast communication is used to indicate the one-to-one mapping between each of the two or more DL frequency resources for multicast communication and a corresponding DL BWP configured within a carrier bandwidth, wherein the two or more DL frequency resources for multicast communication comprise multiple sets of two or more DL frequency resources for multicast communication and each of the multiple sets is associated with a different service, and A multicast data transmission is scheduled in at least one DL frequency resource of the two or more DL frequency resources for multicast communication.
11. 11. The method of claim 10, wherein configuring the two or more DL frequency resources for multicast communications within the carrier bandwidth comprises: Determining two or more DL BWPs configured within the carrier bandwidth, and DL frequency resources for multicast communication are configured for each of the two or more DL BWP configured within the carrier bandwidth.
12. 12. The method of claim 10, wherein transmitting the indication of the two or more DL frequency resources for multicast communication to the one or more wireless devices in communication with the base station comprises transmitting the indication of the two or more DL frequency resources for multicast communication to the one or more wireless devices in communication with the base station in a radio resource control, RRC, message.
13. 13. The method of claim 10, further comprising: Configuring an uplink, UL, frequency resource for multicast communication for each of the two or more DL frequency resources for multicast communication; Transmitting an indication of the UL frequency resources for multicast communications to the one or more wireless devices in communication with the base station, and Multicast feedback data is received from at least one of the one or more wireless devices in the UL frequency resources for multicast communications.
14. 14. The method of claim 10, wherein the two or more DL frequency resources for multicast communication are two or more control resource sets CORESET for multicast communication.
15. 15. The method of claim 10, wherein each of the two or more DL frequency resources for multicast communication has a different configuration, the different configuration being a different set of search spaces or a different physical channel configuration.
16. 16. A wireless device, comprising: A processor configured with processor-executable instructions for performing operations comprising: Receiving an indication of two or more downlink DL frequency resources for multicast communication from a base station, wherein the indication of the two or more DL frequency resources for multicast communication is for indicating a one-to-one mapping between each of the two or more DL frequency resources for multicast communication and a corresponding DL BWP configured within a carrier bandwidth, wherein the two or more DL frequency resources for multicast communication comprise a plurality of sets of two or more DL frequency resources for multicast communication, and each of the plurality of sets is associated with a different service; Selecting DL frequency resources for multicast communication from the two or more DL frequency resources for multicast communication from the base station based at least in part on the active DL bandwidth portion BWP to monitor multicast data transmissions from the base station, and Multicast data transmissions from the base station are monitored in DL frequency resources selected for multicast communications.
17. 17. The wireless device of claim 16, wherein the processor is configured with processor-executable instructions to perform operations such that selecting the DL frequency resources for multicast communication from the two or more DL frequency resources for multicast communication based at least in part on the active DL BWP to monitor multicast data transmissions from the base station comprises: Determining the active DL BWP; Determining a digital scheme of the active DL BWP, and The DL frequency resources for multicast communication that are fully contained within and/or have the same digital scheme as the active DL BWP are selected from the two or more DL frequency resources for multicast communication from the base station to monitor multicast data transmissions from the base station.
18. 18. The wireless device of claim 16, wherein the processor is configured with processor-executable instructions to perform operations such that receiving the indication of the two or more DL frequency resources for multicast communications from the base station comprises receiving the indication of the two or more DL frequency resources for multicast communications from the base station in a unicast radio resource control, RRC, message.
19. 19. The wireless device of claim 16, wherein the processor is configured with processor-executable instructions to perform operations such that the two or more DL frequency resources for multicast communications from the base station comprise: at least a first DL frequency resource associated with a multicast control channel for multicast communications from the base station, and At least a second DL frequency resource associated with a multicast traffic channel for multicast communications from the base station.
20. 20. The wireless device of claim 16, wherein the processor is configured with processor-executable instructions to perform operations further comprising: determining a feedback configuration for the active DL BWP, and Multicast feedback data is sent to the base station according to the feedback configuration for the active DL BWP.

Description

Interaction of multicast bandwidth part (BWP) with multiple BWPs RELATED APPLICATIONS The present application claims the benefit of priority from U.S. provisional application No.63/062,453, entitled "Interaction Of Multicast BWP With Multiple BWP", filed 8/7/2020, and U.S. non-provisional application No.17/393,427, entitled "Interaction Of Multicast Band WIDTH PART (BWP) With Multiple BWP", filed 4/2021, the entire contents of which are incorporated herein by reference for all purposes. Background Long Term Evolution (LTE), 5G new wireless (NR), and other newly developed communication technologies allow wireless devices to communicate information at data rates (e.g., in gigabits per second, etc.) that are orders of magnitude greater than were available just a few years ago. Current communication networks are also safer, accommodate multipath fading, allow lower network traffic latency, provide better communication efficiency (e.g., in bits per second per bandwidth unit used, etc.). These and other recent improvements have facilitated the advent of internet of things (IOT), large-scale machine-to-machine (M2M) communication systems, autonomous vehicles, and other technologies that rely on continuous and secure communications. Disclosure of Invention Various aspects include systems, methods, and devices for radio resource allocation to support multicast services such as multicast services in a fifth generation (5G) new wireless (NR) (5G NR) network. In some aspects, the method may be performed by a processor of a base station. In some aspects, the method may be performed by a processor of a wireless device. Various aspects may include receiving an indication of two or more Downlink (DL) frequency resources for multicast communications from a base station, selecting DL frequency resources for multicast communications from the two or more DL frequency resources for multicast communications from the base station based at least in part on an active DL bandwidth portion (BWP) to monitor multicast data transmissions from the base station, and monitoring the selected DL frequency resources for multicast communications for multicast data transmissions from the base station. In some aspects, the indication of the two or more DL frequency resources for multicast communication is used to indicate a one-to-one mapping between each of the two or more DL frequency resources for multicast communication and a respective DL BWP configured within a carrier bandwidth. In some aspects, wherein selecting the DL frequency resources for multicast communication from the two or more DL frequency resources for multicast communication from the base station based at least in part on the active DL BWP may comprise determining the active DL BWP, determining a digital scheme of the active DL BWP, and selecting the DL frequency resources for multicast communication from the two or more DL frequency resources for multicast communication from the base station that are fully contained within and/or have the same digital scheme as the active DL BWP to monitor multicast data transmissions from the base station. In some aspects, receiving the indication of the two or more DL frequency resources for multicast communications from the base station may include receiving the indication of the two or more DL frequency resources for multicast communications from the base station in a unicast Radio Resource Control (RRC) message. In some aspects, the two or more DL frequency resources for multicast communications from the base station may include at least a first DL frequency resource associated with a multicast control channel for multicast communications from the base station and at least a second DL frequency resource associated with a multicast traffic channel for multicast communications from the base station. The various aspects may further include determining a feedback configuration for the active DL BWP and transmitting multicast feedback data to the base station according to the feedback configuration for the active DL BWP. The various aspects may further include receiving an indication of two or more Uplink (UL) frequency resources for multicast communications and transmitting multicast feedback data to the base station using at least one of the two or more UL frequency resources for multicast communications. In some aspects, one UL frequency resource of the two or more UL frequency resources for multicasting is selected for use in transmitting the multicast feedback data to the base station based at least in part on the active DL BWP. In some aspects, the two or more DL frequency resources for multicast communications may include a plurality of sets of two or more DL frequency resources for multicast communications, and each set of the plurality of sets is associated with a different service. In some aspects, selecting the DL frequency resources for multicast communication from the two or more DL frequency resources for multicast communicatio