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EP-4199551-B1 - INFORMATION CONTROL METHOD AND APPARATUS AND BASE STATION

EP4199551B1EP 4199551 B1EP4199551 B1EP 4199551B1EP-4199551-B1

Inventors

  • LIU, JIAMIN

Dates

Publication Date
20260513
Application Date
20210810

Claims (15)

  1. An information control method, applied to a base station (90, 100), wherein the base station (90, 100) comprises a central unit CU (81) and a distributed unit DU (82), and the method comprises: transmitting (71) first signaling from the CU (81) to the DU (82), wherein the first signaling comprises information about multicast broadcast service MBS traffic, and the information about MBS traffic is used to indicate that the DU (82) transmits MBS traffic in a first mode; generating (72) configuration information related to the MBS traffic in the DU (82); and transmitting (73) the configuration information from the DU (82) to the CU (81), characterized in that , the first signaling further comprises at least one of the following: frequency information expected by the CU (81); cell type information and/or frequency type information expected by the CU (81); priority information about MBS traffic; information about comparison between priority of MBS traffic and priority of unicast traffic; information about whether the MBS traffic is able to be overridden by other MBS traffic and/or unicast traffic; and information about whether the MBS traffic is able to override other MBS traffic and/or unicast traffic.
  2. The method according to claim 1, wherein the first mode comprises any one of the following: a point-to-multipoint PTM mode and a point-to-point PTP mode.
  3. The method according to claim 1, wherein the information about comparison between priority of MBS traffic and priority of unicast traffic comprises at least one of the following: the priority of MBS traffic being higher than, lower than, or equal to the priority of unicast traffic; reporting information of a terminal (11) about priority of MBS traffic and priority of unicast traffic; a priority threshold for MBS traffic; a priority threshold for unicast traffic; and a priority threshold for MBS traffic and a priority threshold for unicast traffic.
  4. The method according to claim 2, wherein the first mode is the PTM mode, and the generating (72) configuration information related to the MBS traffic in the DU (82) comprises: determining, by the DU (82), a target cell and/or a target frequency; reserving, by the DU (82) at the target cell and/or the target frequency, a resource required for the MBS traffic; and generating, by the DU (82) based on the reserved resource, the configuration information related to the MBS traffic; wherein the first signaling comprises the cell information expected by the CU (81), and the target cell is a cell, among cells corresponding to the cell information, that successfully performs acceptance; and/or the first signaling comprises the frequency information expected by the CU (81), and the target frequency is a frequency, among frequencies corresponding to the frequency information, that successfully performs acceptance.
  5. The method according to claim 4, wherein the cells corresponding to the cell information comprise a cell that fails to perform acceptance, and/or the frequencies corresponding to the frequency information comprise a frequency that fails to perform acceptance, and the method further comprises: transmitting acceptance failure information from the DU (82) to the CU (81), wherein the acceptance failure information comprises information about the cell that fails to perform acceptance, and/or information about the frequency that fails to perform acceptance.
  6. The method according to claim 4, wherein the target cell is a cell that successfully performs acceptance and that is selected by the DU (82) from cells related to the DU (82); and/or the target frequency is a frequency that successfully performs acceptance and that is selected by the DU (82) from frequencies related to the DU (82); wherein the first signaling comprises the cell type information expected by the CU (81), and the target cell is a cell that successfully performs acceptance and that is selected by the DU (82) based on the cell type information from cells related to the DU (82); and/or the first signaling comprises the frequency type information expected by the CU (81), and the target frequency is a frequency that successfully performs acceptance and that is selected by the DU (82) based on the frequency type information from frequencies related to the DU (82).
  7. The method according to claim 1, wherein after the transmitting (73) the configuration information from the DU (82) to the CU (81), the method further comprises: transmitting target configuration information to a terminal (11) from the CU (81) by using any one of the following: broadcast radio resource control RRC signaling, multicast RRC signaling, dedicated RRC signaling, and a system information block SIB, wherein the target configuration information comprises the configuration information related to the MBS traffic, or the target configuration information comprises updated configuration information related to the MBS traffic.
  8. The method according to claim 1, wherein before the transmitting (71) first signaling from the CU (81) to the DU (82), the method further comprises: performing, by the CU (81), a first operation, wherein the first operation comprises any one of the following: determining to transmit the MBS traffic in the first mode; and determining to switch a transmission mode of the MBS traffic to the first mode; wherein the performing a first operation comprises: performing, by the CU (81), the first operation based on at least one of the following: MBS traffic interest information collected by the CU (81); a suggestion request of the DU (82); MBS traffic measurement information reported by the DU (82); and auxiliary information or request information transmitted by a core network node.
  9. The method according to claim 8, wherein a collection manner for the MBS traffic interest information comprises at least one of the following: the CU (81) triggers the terminal (11) to report the MBS traffic interest information; and the terminal (11) actively reports the MBS traffic interest information; wherein a trigger condition for the suggestion request of the DU (82) comprises at least one of the following: usage of a target resource meets a first preset condition; transmission efficiency of a target resource meets a second preset condition; and a feedback status of the terminal (11) meets a third preset condition.
  10. The method according to claim 1 or 8, further comprising: transmitting second signaling from the CU (81) to the DU (82), wherein the second signaling is used to configure MBS traffic measurement information; wherein the MBS traffic measurement information comprises at least one of the following: total resource occupancy of MBS traffic in the PTM mode and/or the PTP mode; resource occupancy of each MBS traffic in the PTM mode and/or the PTP mode; resource occupancy of MBS traffic in a preset MBS traffic list in the PTM mode and/or the PTP mode; total resource occupancy of MBS traffic in the PTP mode for each or a given terminal (11); resource occupancy of each MBS traffic in the PTP mode for each or a given terminal (11); resource occupancy of MBS traffic in a preset MBS traffic list in the PTP mode for each or a given terminal (11); feedback information for MBS traffic in the PTM mode; for MBS traffic in the PTP mode, terminal (11) information that is specified or meets a fourth preset condition and that is configured to be reported; total number of active terminals (11) for MBS traffic in the PTM mode; number of active terminals (11) for each MBS traffic in the PTM mode; number of active terminals (11) for given MBS traffic in the PTM mode; number of active terminals (11) for MBS traffic in a preset MBS traffic list in the PTM mode; hardware load of the PTM mode and/or the PTP mode; and remaining capacity of the PTM mode and/or the PTP mode.
  11. The method according to claim 2, wherein the first mode is the PTM mode, the CU (81) corresponds to a plurality of DUs (82), and the method further comprises any one of the following: establishing one user plane tunnel between the CU (81) and each DU (82); and establishing one user plane multicast tunnel between the CU (81) and the plurality of DUs (82).
  12. The method according to claim 2, wherein the first mode is the PTP mode, the CU (81) corresponds to a plurality of DUs (82), the CU (81) maintains a unified first user plane entity for terminals (11) and the plurality of DUs (82) each maintain a second user plane entity for each terminal (11), the method further comprises any one of the following: establishing one user plane tunnel between the CU (81) and each of the DUs (82); and establishing one user plane multicast tunnel between the CU (81) and the plurality of DUs (82).
  13. The method according to claim 2, wherein the first mode is the PTP mode, the CU (81) and the DU (82) maintain a unified first user plane entity and a unified second user plane entity for each terminal (11), and the method further comprises any one of the following: establishing a separate user plane tunnel between the CU (81) and the DU (82) for each terminal; and establishing a distinguishable user plane multicast tunnel between the CU (81) and the DU (82) for each terminal (11).
  14. A base station (90), comprising a processor (91), a memory (92), and a program or instructions stored in the memory and capable of running on the processor (91), characterized in that , when the program or instructions are executed by the processor (91), the steps of the information control method according to any one of claims 1 to 13 are implemented.
  15. A readable storage medium, which stores a program or instructions, characterized in that , when the program or instructions are executed by a processor (91), processes of the method according to any one of claims 1-13 are implemented.

Description

TECHNICAL FIELD This application belongs to the field of communications technologies, and specifically, relates to an information control method and apparatus and a base station. BACKGROUND Currently, multicast broadcast service (Multicast Broadcast Service, MBS) is typically implemented based on a base station. With the development of communications technologies, the central unit (Central Unit, CU)-distributed unit (Distributed Unit, DU) architecture is introduced into existence forms of base stations to meet various requirements. In the CU-DU architecture, a base station includes a CU and a DU that are separate, and a standardized interface is provided between the CU and the DU. However, after the CU-DU architecture is introduced, how transmission of MBS traffic is supported has not currently been determined yet. 3GPP meeting document R3-204923 is from Lenovo and Motorola Mobility, and discusses 5G MBS Transmission Mode and Area Control. 3GPP meeting document R3-204744 is from Intel Corporation and discusses MBS architecture discussion. Chinese patent publication No. CN102355708B discloses a method and a device of processing MBMS service priority. SUMMARY An objective of embodiments of this application is to provide an information control method and apparatus and a base station, to address how transmission of MBS traffic is implemented after a CU-DU architecture is introduced into a base station. The present invention is defined in the accompanying claims. In the embodiments of this application, first signaling may be transmitted from a CU to a DU, where the first signaling includes information about MBS traffic, and the information about MBS traffic is used to indicate that the DU transmits the MBS traffic in a first mode; configuration information related to the MBS traffic is generated in the DU; and the configuration information is transmitted from the DU to the CU. In this way, after a CU-DU architecture is introduced into a base station, transmission of MBS traffic can be supported. Therefore, in a network with a CU-DU architecture, a terminal can also efficiently perform correct MBS traffic reception processing based on MBS traffic transmission parameter configured by the network, thereby further improving quality of service assurance of the traffic, and improving user experience and system efficiency. BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a block diagram of a wireless communications system according to an embodiment of this application;FIG. 2 is a schematic diagram of a protocol stack architecture of a control plane for unicast traffic in a CU-DU architecture according to an embodiment of this application;FIG. 3 is a schematic diagram of a protocol stack architecture of a control plane for multicast traffic in a CU-DU architecture according to an embodiment of this application;FIG. 4 is a first schematic diagram of a protocol stack architecture of a user plane in a CU-DU architecture according to an embodiment of this application;FIG. 5 is a second schematic diagram of a protocol stack architecture of a user plane in a CU-DU architecture according to an embodiment of this application;FIG. 6 is a third schematic diagram of a protocol stack architecture of a user plane in a CU-DU architecture according to an embodiment of this application;FIG. 7 is a flowchart of an information control method according to an embodiment of this application;FIG. 8 is a schematic structural diagram of an information control apparatus according to an embodiment of this application;FIG. 9 is a schematic structural diagram of a base station according to an embodiment of this application; andFIG. 10 is a schematic structural diagram of another base station according to an embodiment of this application. DESCRIPTION OF EMBODIMENTS The following clearly and completely describes the technical solutions in the embodiments of this application with reference to the accompanying drawings in the embodiments of this application. Apparently, the described embodiments are some but not all of the embodiments of this application. The following clearly and completely describes the technical solutions in the embodiments of this application with reference to the accompanying drawings in the embodiments of this application. The terms "first", "second", and the like in this specification and claims of this application are used to distinguish between similar objects instead of describing a specific order or sequence. It should be understood that data used in this way is interchangeable in appropriate circumstances so that the embodiments of this application can be implemented in other orders than the order illustrated or described herein. In addition, "first" and "second" are usually used to distinguish objects of the same category, but do not limit the number of the objects. For example, there may be one or more first objects. In addition, in this specification and claims, "and/or" indicates at least one of connected objects, and the char