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US-12627950-B2 - Method and apparatus for multicast and broadcast services

US12627950B2US 12627950 B2US12627950 B2US 12627950B2US-12627950-B2

Abstract

Embodiments of the present application relate to a method and apparatus for multicast and broadcast services (MBS). An exemplary method includes: transmitting a set of user data packet over a shared tunnel for multicast data radio bearer (M-DRB) and unicast data radio bearer (U-DRB), wherein each of the set of user data packet is associated with at least one of: a M-DRB; and one or more U-DRBs; and receiving a data delivery status frame for each of the at least one of the M-DRB and one or more U-DRBs. Embodiments of the present application can support the user plane protocol in the case of multiple transmission modes in the MBS.

Inventors

  • Mingzeng Dai
  • Lianhai Wu
  • Haiming Wang

Assignees

  • LENOVO (BEIJING) LIMITED

Dates

Publication Date
20260512
Application Date
20200828

Claims (20)

  1. 1 . A network entity for wireless communication, comprising: at least one memory; and at least one processor coupled with the at least one memory and operable to cause the network entity to: transmit a set of user data packet over a shared tunnel for multicast data radio bearer (M-DRB) and unicast data radio bearer (U-DRB), wherein each of the set of user data packet is associated with at least one of: a M-DRB; and one or more U-DRBs; and receive a data delivery status frame for each of the at least one of the M-DRB and the one or more U-DRBs in: separate feedback tunnels; or a single feedback channel, wherein the data delivery status frame includes at least an identity (ID) associated with the at least one of the M-DRB and the one or more U-DRBs.
  2. 2 . The network entity of claim 1 , wherein the at least one processor is operable to cause the network entity to: receive the data delivery status frame for each of the at least one of the M-DRB and the one or more U-DRBs in the separate feedback tunnels; establish a corresponding feedback tunnel for each of the at least one of the M-DRB and the one or more U-DRBs, including to allocate uplink (UL) transport network layer (TNL) information of the corresponding feedback tunnel; associate the UL TNL information of the feedback tunnel with bearer context ID of the shared tunnel; and transmit the UL TNL information of the corresponding feedback tunnel and the bearer context ID of the shared tunnel.
  3. 3 . The network entity of claim 1 , wherein the at least one processor is operable to cause the network entity to establish a corresponding feedback tunnel for each of the at least one of the M-DRB and the one or more U-DRBs, including to: receive an indication requiring uplink (UL) transport network layer (TNL) information of the corresponding feedback tunnel from a central unit control plane (CU-CP) unit; allocate the UL TNL information of the corresponding feedback tunnel; associate the UL TNL information of the corresponding feedback tunnel with bearer context ID of the shared tunnel; and transmit the UL TNL information of the corresponding feedback tunnel.
  4. 4 . The network entity of claim 3 , wherein the UL TNL information indicates an internet protocol (IP) address and a general packet radio service (GPRS) tunneling protocol (GTP) user plane (GTP-U) tunnel endpoint identifier (TEID).
  5. 5 . The network entity of claim 1 , wherein the at least one processor is operable to cause the network entity to: receive the data delivery status frame for each of the at least one of the M-DRB and the one or more U-DRBs in the single feedback tunnel, wherein the data delivery status frame includes one or more of an M-DRB ID and cell information of one or more cells associated with the M-DRB, or a U-DRB ID and a user equipment (UE) ID associated with the U-DRB; and establish the single feedback tunnel.
  6. 6 . A network entity for wireless communication, comprising: at least one memory; and at least one processor coupled with the at least one memory and operable to cause the network entity to: receive a set of user data packet over a shared tunnel for multicast data radio bearer (M-DRB) and unicast data radio bearer (U-DRB), wherein each of the set of user data packet is associated with at least one of: a M-DRB; and one or more U-DRBs; and transmit a data delivery status frame for each of the at least one of the M-DRB and one or more U-DRBs in: separate feedback tunnels; or a single feedback channel, wherein the data delivery status frame includes at least an identity (ID) associated with the at least one of the M-DRB and the one or more U-DRBs.
  7. 7 . The network entity of claim 6 , comprising transmitting wherein the at least one processor is operable to cause the network entity to: transmit the data delivery status frame for each of the at least one of the M-DRB and the one or more U-DRBs in the separate feedback tunnels; establish a corresponding feedback tunnel for each of the at least one of the M-DRB and one or more U-DRBs, including to receive uplink (UL) transport network layer (TNL) information of the corresponding feedback tunnel; and associate the UL TNL information of the corresponding feedback tunnel with bearer context ID of the shared tunnel.
  8. 8 . The network entity of claim 7 , wherein the UL TNL information indicates an internet protocol (IP) address and a general packet radio service (GPRS) tunneling protocol (GTP) user plane (GTP-U) tunnel endpoint identifier (TEID).
  9. 9 . The network entity of claim 7 , wherein the UL TNL information of the corresponding feedback tunnel is received from a central unit control plane (CU-CP) unit.
  10. 10 . The network entity of claim 6 , wherein the at least one processor is operable to cause the network entity to: establish the single feedback tunnel.
  11. 11 . The network entity of claim 6 , wherein the data delivery status frame for the M-DRB includes an M-DRB ID and cell information of one or more cells associated with the M-DRB.
  12. 12 . The network entity of claim 6 , wherein the data delivery status frame for each U-DRB includes a U-DRB ID and a user equipment (UE) ID associated with the U-DRB.
  13. 13 . A network entity for wireless communication, comprising: at least one memory; and at least one processor coupled with the at least one memory and operable to cause the network entity to: transmit an indication requiring uplink (UL) transport network layer (TNL) information of at least one feedback tunnel for data delivery status frame, wherein the at least one feedback tunnel is associated with at least one of a multicast data radio bearer (M-DRB) and one or more unicast data radio bearers (U-DRBs), and the at least one feedback tunnel comprises: separate feedback tunnels for each of the at least one of the M-DRB and the one or more U-DRBs; or a single feedback channel, wherein the data delivery status frame includes at least an identity (ID) associated with the at least one of the M-DRB and the one or more U-DRBs.
  14. 14 . The network entity of claim 13 , wherein each feedback tunnel of the at least one feedback tunnel is associated with a corresponding data radio bearer (DRB) of the at least one of the M-DRB and the one or more U-DRBs.
  15. 15 . The network entity of claim 13 , wherein the indication requires the UL TNL information of one feedback tunnel associated with the M-DRB.
  16. 16 . The network entity of claim 13 , wherein the indication requires the UL TNL information of one feedback tunnel associated with one U-DRB.
  17. 17 . The network entity of claim 13 , wherein the indication requires the UL TNL information of a plurality of feedback tunnels for a plurality of U-DRBs, each feedback tunnel of the plurality of feedback tunnels is associated with a corresponding U-DRB of the plurality of U-DRBs.
  18. 18 . The network entity of claim 13 , wherein the indication requires the UL TNL information of the single feedback channel for all of the at least one of the M-DRB and the one or more U-DRBs.
  19. 19 . The network entity of claim 13 , wherein the at least one processor is operable to cause the network entity to, for each feedback tunnel: receive the UL TNL information of the at least one feedback tunnel; and transmit the UL TNL information of the at least one feedback tunnel.
  20. 20 . The network entity of claim 13 , wherein the UL TNL information indicates an internet protocol (IP) address and a general packet radio service (GPRS) tunneling protocol (GTP) user plane (GTP-U) tunnel endpoint identifier (TEID).

Description

TECHNICAL FIELD Embodiments of the present application generally relate to wireless communication technology, especially to a method and apparatus for multicast and broadcast services (MBS). BACKGROUND In new radio (NR) Rel-17, the MBS plans to focus on a small area mixed mode multicast (also referred to as Objective A in the TR 23.757). The Objective A is about enabling general MBS services over 5G system (5GS) and the identified use cases that could benefit from this feature. These use cases include but are not limited to: public safety and mission critical, vehicle to everything (V2X) applications, transparent internet protocol version 4 (IPv4)/internet protocol version 6 (IPv6) multicast delivery, internet protocol television (IPTV), software delivery over wireless, group communications and internet of things (IOT) applications. In these use cases, the requirements for service continuity and reliability have changed. In order to support the above requirements, one objective introduced in RP-201038 is: specify support for dynamic change of Broadcast/Multicast service delivery between multicast (for example, point to multipoint (PTM) mode) and unicast (for example, point to point (PTP) mode) with service continuity for a given user equipment (UE). In addition, a NR user plane protocol which is located in the user plane of the radio network layer may be used to convey control information related to the user data flow management of a radio bearer (RB). However, how to support the user plane protocol in the case of multiple transmission modes (e.g., the PTM mode and PTP mode) in the MBS needs to be further studied. Given the above, the industry desires an improved technology for multicast and broadcast services, so as to support the user plane protocol in the case of multiple transmission modes in the MBS. SUMMARY OF THE APPLICATION Embodiments of the present application at least provide a technical solution for multicast and broadcast services. According to some embodiments of the present application, a method may include: transmitting a set of user data packet over a shared tunnel for multicast data radio bearer (M-DRB) and unicast data radio bearer (U-DRB), wherein each of the set of user data packet is associated with at least one of: a M-DRB; and one or more U-DRBs: and receiving a data delivery status frame for each of the at least one of the M-DRB and one or more U-DRBs. According to some other embodiments of the present application, a method may include: receiving a set of user data packet over a shared tunnel for M-DRB and U-DRB, wherein each of the set of user data packet is associated with at least one of: a M-DRB: and one or more U-DRBs: and transmitting a data delivery status frame for each of the at least one of the M-DRB and one or more U-DRBs. According to some other embodiments of the present application, a method may include: transmitting an indication requiring uplink (UL) transport network layer (TNL) information of at least one feedback tunnel for data delivery status frame, wherein the at least one feedback tunnel is associated with at least one of a M-DRB and one or more U-DRBs. Some embodiments of the present application also provide an apparatus, include: at least one non-transitory computer-readable medium having computer executable instructions stored therein, at least one receiver: at least one transmitter; and at least one processor coupled to the at least one non-transitory computer-readable medium, the at least one receiver and the at least one transmitter. The computer executable instructions are programmed to implement any method as stated above with the at least one receiver, the at least one transmitter and the at least one processor. Embodiments of the present application provide a technical solution for multicast and broadcast services, which can at least support the user plane protocol in the case of multiple transmission modes in the MBS. BRIEF DESCRIPTION OF THE DRAWINGS In order to describe the manner in which advantages and features of the application can be obtained, a description of the application is rendered by reference to specific embodiments thereof, which are illustrated in the appended drawings. These drawings depict only example embodiments of the application and are not therefore to be considered limiting of its scope. FIG. 1 is a schematic diagram illustrating an exemplary wireless communication system according to some embodiments of the present application: FIG. 2 is a schematic diagram illustrating an internal structure of a BS according to some embodiments of the present application: FIG. 3 is a schematic diagram illustrating an internal structure of a BS according to some other embodiments of the present application: FIG. 4 is a schematic diagram illustrating an user plane protocol according to some embodiments of the present application: FIG. 5 is a schematic diagram illustrating a data transmission on a shared tunnel according to some embodiments o