Wireless communication method of user equipment, base station and mbs

Abstract

The application discloses a user equipment (UE), a base station and a wireless communication method for multicast / broadcast service (MBS). A wireless communication method of MBS performed by a UE comprises reporting a service interest of the UE and a beam quality measurement report of the UE to a base station, receiving a multicast control channel (MCCH) and a beam scanning configuration related to the service interest of the UE from the base station, and monitoring the MCCH and the beam scanning configuration to receive the related service interest. This can solve the problems in the prior art, provide flexible MBS scheduling, provide separate control plane scheduling for different MBS services, reduce signaling overhead, reduce UE complexity, and / or provide good communication performance.

Description

Technical Field

[0001] This application relates to the field of communications, and in particular to a user equipment (UE), base station, and wireless communication method for multicast / broadcast service (MBS), which can provide a flexible control plane (CP) scheduling mechanism for efficient MBS transmission and reception. Background Technology

[0002] Wireless communication systems are widely deployed to provide various types of communication content, such as voice, video, packet data, messaging, and broadcasting. These systems can support communication with multiple users by sharing available system resources (e.g., time, frequency, and power). Examples of such multiple access systems include fourth-generation (4G) systems such as Long Term Evolution (LTE) systems and fifth-generation (5G) systems, which may be referred to as new radio (NR) systems. These systems can employ technologies such as code division multiple access (CDMA), time division multiple access (TDMA), frequency division multiple access (FDMA), orthogonal frequency division multiple access (OFDMA), or discrete Fourier transform-spread-OFDM (DFT-S-OFDM). A wireless multiple access communication system may include multiple base stations or network access nodes, each of which simultaneously supports communication from multiple communication devices, which may also be referred to as user equipment (UE). The wireless communication network may include base stations capable of supporting UE communication. The UE can communicate with the base station via downlink (DL) and uplink (UL). DL refers to the communication link from the base station to the UE, and UL refers to the communication link from the UE to the base station.

[0003] In 3GPP cellular networks, broadcast and multicast services can be transmitted via a transport service called Multimedia Broadcast / Multicast Service (MBMS). The Broadcast Multicast Service Center (BM-SC) server is responsible for distributing media content to a group of subscribers. When a UE moves out of network coverage, it may be unable to use MBMS because uplink and downlink connections to the BM-SC server are no longer available. MBMS is a point-to-multipoint (PTM) interface specification designed to provide efficient transmission of broadcast and multicast services within 3GPP cellular networks. Examples of MBMS interface specifications include those described in the Universal Mobile Telecommunication System (UMTS) and Long Term Evolution (LTE) communications specifications. For broadcast transmission across multiple cells, the specification defines transmission over a single-frequency network configuration. Expected applications include mobile television, news, broadcasting, file transfer, emergency alerts, etc. When broadcasting via MBMS, all cells within the Multimedia Broadcast / Multicast Service Single Frequency Network (MBSFN) area transmit the same MBMS service.

[0004] Users access these services and obtain MBMS content through wireless communication devices such as cellular phones, tablets, laptops, and other devices with wireless transceivers that communicate with base stations within the communication system. Base stations provide wireless services to wireless communication devices (sometimes called mobile devices or UEs) within the cell. Users can access at least some multimedia services through the UE using point-to-point (PTP) connections or PTM transmissions. In 3GPP systems, unicast technology can be used to provide PTP services, and MBMS communication can be used to provide PTM transmissions via MBSFN or single-cell point-to-multipoint (SC-PTM) communication. In systems operating according to revisions of the 3GPP Long Term Evolution (LTE) communication specifications, eMBMS is used to provide MBMS. Therefore, in LTE systems, unicast, MBSFN, or SC-PTM can be used to provide MBMS services.

[0005] At the Radio Access Network (RAN) meeting #88-e held from June 29 to July 3, 2020, a new work project was approved to support RAN for multicast / broadcast services (MBS) in 5G. The goal of this work project is to provide support in the RAN to enable common MBS services on 5GS to support diverse MBS services, such as public safety and mission-critical applications, V2X applications, transparent IPv4 / IPv6 multicast delivery, IPTV, wireless software delivery, group communications, and IoT applications. One of the main objectives of this RAN work project is to study and define support for basic mobility and service continuity of 5G new radio (NR) multicast / broadcast services (MBS).

[0006] During recent 3GPP meetings (RAN-112e and RAN-113e), the MBS control plane (CP) issue for NR MBS was extensively discussed. Discussions regarding MBS control plane design focused on the reuse of LTE SC-PTM designs for NR MBS (i.e., due to similarities, both LTE SC-PTM and NR MBS only consider single-cell operation). However, according to the requirements of the approved work in RAN#88-e, the design of the NR MBS control plane should consider scheduling flexibility to support dynamism, including dynamic distribution of UEs within the area, dynamic control of service areas, and flexible configuration of the MBS control channel to support different services with high resource efficiency; otherwise, more signaling overhead may occur. For example, if delay-tolerant and delay-sensitive services are configured together in a single control channel, frequent scheduling of the control channel is required to meet the delay requirements of delay-sensitive services.

[0007] Therefore, there is a need for a user equipment (UE), base station, and wireless communication method that can solve the problems in the prior art, provide flexible MBS scheduling, separate control plane scheduling for different MBS services, reduce signaling overhead, reduce UE complexity, and / or provide good communication performance. Summary of the Invention

[0008] One object of the present invention is to provide a user equipment (UE), base station and wireless communication method that can solve the problems in the prior art, provide flexible MBS scheduling, separate control plane scheduling for different MBS services, reduce signaling overhead, reduce UE complexity and / or provide good communication performance.

[0009] In a first aspect of the invention, a wireless communication method for a multicast / broadcast service (MBS), the method being performed by a user equipment (UE), the method comprising: reporting the UE's service interests and a beam quality measurement report of the UE to a base station; receiving from the base station a multicast control channel (MCCH) and beam scanning configuration related to the UE's service interests; and monitoring the MCCH and beam scanning configuration related to the UE's service interests.

[0010] In a second aspect of the invention, a wireless communication method for a multicast / broadcast service (MBS), the method being performed by a base station, the method comprising: receiving service interests and beam quality measurement reports of one or more user equipments (UEs) from one or more UEs; determining a multicast control channel (MCCH) and beam scanning configuration related to the service interests of the one or more UEs based on the service interests and beam quality measurement reports of the one or more UEs; and configuring the multicast control channel (MCCH) and beam scanning configuration related to the service interests of the one or more UEs to the one or more UEs.

[0011] In a third aspect of the invention, a user equipment (UE) includes: a memory, a transceiver, and a processor coupled to the memory and the transceiver. The processor is configured to report the UE's service interests and beam quality measurement reports to a base station. The transceiver is configured to receive from the base station a multicast control channel (MCCH) and beam scanning configuration related to the UE's service interests. The processor is configured to monitor the MCCH and beam scanning configuration related to the UE's service interests.

[0012] In a fourth aspect of the invention, a base station includes: a memory, a transceiver, and a processor coupled to the memory and the transceiver. The transceiver is configured to receive service interests and beam quality measurement reports of one or more user equipment (UEs) from one or more UEs. The processor is configured to determine a multicast control channel (MCCH) and beam scanning configuration related to the service interests of the one or more UEs based on the service interests and beam quality measurement reports of the one or more UEs. The processor is configured to configure the multicast control channel (MCCH) and beam scanning configuration related to the service interests of the one or more UEs to the one or more UEs.

[0013] In a fifth aspect of the invention, thereon a non-transitory machine-readable storage medium having instructions stored thereon, which, when executed by a computer, cause the computer to perform the above-described method.

[0014] A sixth aspect of this application provides a chip including a processor configured to invoke and run a computer program stored in a memory to cause a device on which the chip is mounted to perform the methods described above.

[0015] A seventh aspect of this application provides a computer-readable storage medium storing a computer program, wherein the computer program causes a computer to perform the above-described method.

[0016] An eighth aspect of this application provides a computer program product including a computer program that causes a computer to perform the methods described above.

[0017] A ninth aspect of this application provides a computer program that causes a computer to perform the above-described method. Attached Figure Description

[0018] To more clearly illustrate the embodiments of the present invention or related technologies, the accompanying drawings are briefly described below. Obviously, the drawings are only some embodiments of the present invention, and those skilled in the art can obtain other drawings based on these drawings without any prerequisites.

[0019] Figure 1 This is a block diagram of one or more user equipment (UE) and base station (e.g., gNB) communicating in a communication network system according to an embodiment of the present invention.

[0020] Figure 2 This is a flowchart illustrating a wireless communication method for MBS performed by a UE according to an embodiment of the present invention.

[0021] Figure 3 This is a flowchart illustrating a wireless communication method for MBS performed by a base station according to an embodiment of the present invention.

[0022] Figure 4 This is a schematic diagram illustrating an example of a wireless communication method for MBS performed by a base station and one or more UEs according to an embodiment of the present invention.

[0023] Figure 5 This is a schematic diagram illustrating an example of a wireless communication method for MBS performed by one or more UEs according to an embodiment of the present invention.

[0024] Figure 6 This is a schematic diagram illustrating an example of a wireless communication method for MBS performed by a base station according to an embodiment of the present invention.

[0025] Figure 7 This is a schematic diagram illustrating an example of MCCH configuration and SSB or beam association configuration based on a UE report according to an embodiment of the present invention.

[0026] Figure 8 This is a schematic diagram illustrating an example of a single MCCH configuration according to an embodiment of the present invention.

[0027] Figure 9 This is a schematic diagram illustrating an example of a multi-MCCH configuration according to an embodiment of the present invention.

[0028] Figure 10 This is a schematic diagram illustrating an example of MBS control channel configuration based on UE service interest and beam reporting according to an embodiment of the present invention.

[0029] Figure 11 This is a schematic diagram illustrating an example configuration of the MCCH according to an embodiment of the present invention.

[0030] Figure 12 This is a schematic diagram illustrating an example of the association between PDCCH timing and SSB in the MCCH search space according to an embodiment of the present invention.

[0031] Figure 13 This is a schematic diagram illustrating an example of the association between PDCCH timing and SSB in the MCCH search space according to an embodiment of the present invention.

[0032] Figure 14 This is a block diagram of a wireless communication system according to an embodiment of the present invention. Detailed Implementation

[0033] The technical aspects, structural features, objectives, and effects of the embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Specifically, the terminology used in the embodiments of the present invention is only used to describe the purpose of a particular embodiment and is not intended to limit the present invention.

[0034] Multicast / broadcast services (MBS) are expected to cover a diverse range of 5G applications and services, from public safety, mission-critical, V2X, transparent IPv4 / IPv6 multicast delivery, IPTV, and wireless software delivery to group communications and IoT applications. These applications and services have varying requirements in terms of latency (e.g., mission-critical and V2X) and reliability (i.e., lossless transmission, such as software delivery). Crucially, in addition to the possibility that UEs' interest in these offered services may fluctuate over time, it is likely that multiple sets of these applications and services can be offered to UEs within the MBS service area simultaneously. To provide flexible scheduling that supports both the diversity of 5G MBS services and the dynamics of user distribution and changing user service interests within the service area, some embodiments of the present invention provide a novel method that utilizes multi-beam operation and flexible control plane (CP) configuration to provide efficient scheduling for better delivery and reception of 5G MBS, meeting the diverse needs of different 5G NR MBS services.

[0035] Figure 1 In some embodiments, one or more user equipment (UE) 10 and base station (e.g., gNB) 20 are provided for communication in a communication network system 30 according to embodiments of the present invention. The communication network system 30 includes one or more UEs 10 and base station 20. One or more UEs 10 may include a memory 12, a transceiver 13, and a processor 11 coupled to the memory 12 and transceiver 13. The base station 20 may include a memory 22, a transceiver 23, and a processor 21 coupled to the memory 22 and transceiver 23. The processor 11 or 21 may be configured to implement the functions, processes, and / or methods proposed herein. A wireless interface protocol layer may be implemented in the processor 11 or 21. The memory 12 or 22 is operatively coupled to the processor 11 or 21 and stores various information to operate the processor 11 or 21. The transceiver 13 or 23 is operatively coupled to the processor 11 or 21 and transmits and / or receives radio signals.

[0036] Processor 11 or 21 may include application-specific integrated circuits (ASICs), other chipsets, logic circuits, and / or data processing devices. Memory 12 or 22 may include read-only memory (ROM), random access memory (RAM), flash memory, memory cards, storage media, and / or other storage devices. Transceiver 13 or 23 may include baseband circuitry for processing radio frequency signals. When embodiments are implemented as programs, the techniques described herein can be implemented using modules (e.g., processes, functions, etc.) that perform the functions described herein. Modules may be stored in memory 12 or 22 and executed by processor 11 or 21. Memory 12 or 22 may be implemented within or outside processor 11 or 21, in which case they may be communicatively coupled to processor 11 or 21 via various means known in the art.

[0037] In some embodiments, processor 11 is used to report the service interests of UE 10 and beam quality measurement reports of UE 10 to base station 20. Transceiver 13 is configured to receive multicast control channel (MCCH) and beam scanning configuration related to the service interests of UE 10 from base station 20. Processor 11 is configured to monitor the MCCH and beam scanning configuration related to the service interests of UE 10. This can solve the problems in the prior art, provide flexible MBS scheduling, provide separate control plane scheduling for different MBS services, reduce signaling overhead, reduce UE complexity, and / or provide good communication performance.

[0038] In some embodiments, transceiver 23 is configured to receive service interests and beam quality measurement reports of one or more UEs 10 from one or more UEs 10. Processor 21 is configured to determine the multicast control channel (MCCH) and beam scanning configuration related to the service interests of one or more UEs 10 based on the service interests and beam quality measurement reports of the one or more UEs 10. Processor 21 is configured to configure the multicast control channel (MCCH) and beam scanning configuration related to the service interests of one or more UEs 10 to one or more UEs 10. This can solve the problems in the prior art, provide flexible MBS scheduling, provide separate control plane scheduling for different MBS services, reduce signaling overhead, reduce UE complexity, and / or provide good communication performance.

[0039] Figure 2 A wireless communication method 200 for multicast / broadcast services (MBS) performed by a user equipment (UE) according to an embodiment of the present invention is illustrated. In some embodiments, method 200 includes: step 202, reporting the UE's service interests and the UE's beam quality measurement report to a base station; step 204, receiving from the base station the multicast control channel (MCCH) and beam scanning configuration related to the UE's service interests; and step 206, monitoring the MCCH and beam scanning configuration related to the UE's service interests. This can solve the problems in the prior art, provide flexible MBS scheduling, provide separate control plane scheduling for different MBS services, reduce signaling overhead, reduce UE complexity, and / or provide good communication performance.

[0040] Figure 3 A wireless communication method 300 for multicast / broadcast services (MBS), performed by a base station according to an embodiment of the present invention, is illustrated. In some embodiments, method 300 includes: step 302, receiving service interests and beam quality measurement reports of one or more user equipments (UEs); step 304, determining a multicast control channel (MCCH) and beam scanning configuration related to the service interests of the one or more UEs based on the service interests and beam quality measurement reports of the one or more UEs; and step 306, configuring the multicast control channel (MCCH) and beam scanning configuration related to the service interests of the one or more UEs to the one or more UEs. This can solve the problems in the prior art, provide flexible MBS scheduling, provide separate control plane scheduling for different MBS services, reduce signaling overhead, reduce UE complexity, and / or provide good communication performance.

[0041] In some embodiments, the beam quality measurement report of the UE includes at least one of the following: UE best beam report; uplink channel state information reference signal (CSI-RS); or measurement quality of uplink sounding reference signal (SRS). In some embodiments, the beam quality measurement report of the UE is periodic, semi-static, or aperiodic, and / or the uplink CSI-RS is used for the UE in Radio Resource Control (RRC) connection mode, and includes a reference signal received power (RSRP) measurement of the beam, a reference signal received quality (RSRQ) measurement of the beam, or a channel quality indicator (CQI) measurement of the beam and / or the measurement quality of the uplink SRS for the UE in RRC idle / inactive mode. In some embodiments, the base station configures the MCCH and beam scanning configuration for the UE periodically, semi-statically, or dynamically via RRC signaling or downlink control information (DCI) based on the UE report. In some embodiments, the base station determines the MCCH and beam scanning configuration by configuring the MCCH and beam scanning configuration based on a single MCCH or multiple MCCHs. In some embodiments, a base station is configured to configure a single MCCH for each cell or region under the base station to provide a point-to-multipoint (PTM) control plane (CP) scheduling configuration for a group common (gc)-PDCCH or gc physical downlink shared channel (PDSCH) for scheduling multicast service channels (MTCH) carrying MBS services. In some embodiments, a base station is configured to configure multiple MCCHs for each cell or region under the base station to provide a gc-PDCCH or gc-PDSCH PTM CP scheduling configuration for scheduling multicast service channels (MTCH) carrying MBS services. In some embodiments, the base station determines the MCCH and beam scanning configuration by configuring the MCCH within the system information block (SIB) defined for MBS, configuring a Radio Network Terminal Identifier (RNTI) for MCCH scheduling, and / or configuring an RNTI for MCCH change notification scheduling. In some embodiments, a base station is configured to configure a fixed RNTI for MCCH scheduling if there is one MCCH for each cell or region under the base station (e.g., a region under a gNB distribution unit or gNB-DU) to provide a PTM CP scheduling configuration for MBS services.

[0042] In some embodiments, the base station is configured to configure multiple fixed MCCH RNTIs for scheduling multiple MCCHs. If multiple MCCHs are configured in each cell or area under the base station (e.g., an area under a gNB distribution unit or gNB-DU), then each MCCH RNTI corresponds to one MCCH to provide PTM CP scheduling configuration for MBS services. In some embodiments, the base station is configured to flexibly configure multiple MCCH RNTIs to provide PTM CP scheduling configuration for MBS services based on the number of MCCHs flexibly configured in each cell or area under the base station. In some embodiments, the base station determines the MCCH and beam scanning configuration by configuring the association between the MCCH search space, PDCCH timing, and synchronization signal block (SSB) for scheduling MCCHs within the MBSSIB.

[0043] In some embodiments, the base station determines the MCCH and beam scanning configuration by configuring the association between MCCH scheduling and / or MCCH change notifications, PDCCH timing, and SSBs to scan MCCH scheduling and / or MCCH change notifications toward the SSB direction. In some embodiments, the base station is configured to configure a new RNTI for MCCH change notifications for MBS, without additional information (e.g., bitmaps) for MCCH and area association as in LTE. In some embodiments, the base station is configured to use some additional information (e.g., x bitmaps, where x∈2,4,8,16,32, etc.) to configure a new RNTI for MCCH change notifications for MCCHs associated with the UE's best quality beam and / or the UE's service interests.

[0044] Figure 4 An example of a wireless communication method for MBS performed by a base station and one or more UEs according to an embodiment of the present invention is shown. Figure 5 An example of a wireless communication method for MBS performed by one or more UEs according to an embodiment of the present invention is shown. Figure 6 An example of a wireless communication method for MBS performed by a base station according to an embodiment of the present invention is shown. Figures 4 to 6In some embodiments, to achieve flexible scheduling to support the diversity of 5G MBS services and the dynamics of user distribution and changing user service interests within the service area, some embodiments of the present invention provide a novel method / mechanism that utilizes multi-beam operation and flexible control plane (CP) configuration to provide effective scheduling to handle the different needs of various 5G NR MBS services. In some embodiments, one or more UEs report their / their service interests and beam quality measurement reports to the network / gNB. After collecting relevant information on beam quality measurements and service interests from one or more UEs, the base station (e.g., gNB) determines the appropriate MBS control plane (CP) configuration (i.e., the MCCH scheduling configuration and beam-related configuration associated with each UE's service interests) required to schedule MBS user plane service traffic for each UE. Subsequently, the base station (e.g., gNB) provides one or more UEs with the MCCH scheduling and configuration associated with the services of interest, as well as the optimal beam scanning configuration. After receiving the scheduling configuration from the gNB, each UE only monitors the MCCH configuration associated with the services that the UE is interested in receiving.

[0045] In some embodiments, the UE's beam quality measurement report includes at least one of the following: UE best beam report; uplink channel state information reference signal (CSI-RS), such as beam reference signal received power (RSRP) measurement, beam reference signal received quality (RSRQ) measurement, or beam channel quality indicator (CQI) measurement (i.e., for UEs with Radio Resource Control (RRC) connections); or measurement quality of uplink sounding reference signal (SRS) (i.e., for UEs with RRC idle / inactive connections). Optionally, the UE's beam quality measurement report is periodic. Optionally, the UE's beam quality measurement report is semi-static. Optionally, the UE's beam quality measurement report is non-periodic.

[0046] In some embodiments, the UE receives the MCCH and beam scanning configuration from the base station periodically, semi-statically, or dynamically via RRC signaling or downlink control information (DCI). Specifically, in some embodiments, the MCCH and beam scanning configuration are provided to the UE by the base station (e.g., gNB). Optionally, the MCCH and beam scanning configuration may be transmitted periodically (e.g., every 5ms, 10ms, or 20ms, etc.), semi-statically, or dynamically based on reports, on the RRC signaling or downlink control information (DCI) with respect to the number of UEs.

[0047] In some embodiments, the base station determines the MCCH and beam scanning configuration by mapping the Quality of Service (QoS) streams of different MBS services of interest to multiple UEs to the same MBS or Multicast Radio Bearer (MRB) if multiple UEs within a beam are interested in receiving the same set of services. In some embodiments, the base station determines the MCCH and beam scanning configuration by configuring a separate MCCH for each MRB to ensure that each UE can be configured to monitor the MCCH of the MRB associated with the QoS streams of one or more services that the UE is interested in receiving. In some embodiments, the base station determines the MCCH and beam scanning configuration by configuring multiple beams and a single MCCH and / or MCCH change notifications with different scheduling configurations including different modification periods and repetition periods, supporting the scheduling of the MRB configured for each beam, based on beam quality measurement reports from one or more UEs. In some embodiments, the base station determines the MCCH and beam scanning configuration by configuring a specific RNTI with an additional bitmap for each configured MCCH and / or MCCH change notification scheduling configuration, and associating the scheduling with monitoring timing.

[0048] In some embodiments, the base station determines the MCCH and beam scanning configuration by configuring each monitoring time with a configured MCCH and / or MCCH change notification scheduling configuration, a set of PDCCH repetitions associated with each monitoring time, and associating each PDCCH repetition with an SSB. In some embodiments, the base station determines the MCCH and beam scanning configuration by configuring the beam scanning and / or MCCH change notification scheduling configuration for the MCCH to the direction of the associated SSB by scanning the configured PDCCH to the associated SSB beam direction. In some embodiments, the base station determines the MCCH and beam scanning configuration by configuring one or more UEs to acquire only one PDCCH to receive the configured MCCH or MCCH change notification associated with the service interests of one or more UEs. In some embodiments, the base station determines the MCCH and beam scanning configuration by configuring multiple beams based on beam quality measurement reports from one or more UEs, and configuring multiple MCCHs, each MCCH having a different scheduling configuration including a modification period and a repetition period, supporting the scheduling of MRBs configured for each beam.

[0049] Figure 7 Examples of MCCH configuration and SSB or beam association configuration based on UE reports according to embodiments of the present invention are shown. In some embodiments, such as Figure 4The appropriate control plane scheduling shown can be performed by at least one of the following: configuring appropriate control plane scheduling based on a single MCCH (i.e., with different modification and repetition periods) or multiple MCCHs (each MCCH having different modification and repetition periods, etc.); configuring appropriate scheduling modes for the configured MCCHs, Radio Network Terminal Identifier (RNTI) configuration for MCCH scheduling, and / or RNTI for MCCH notification of schedule changes within the System Information Block (SIB) defined by the MBS; configuring the association between the MCCH search space (i.e., within the System Information Block (SIB)), Physical Downlink Control Channel (PDCCH) timing, and Synchronization Signal Block (SSB) for scheduling MCCHs within the MBS SIB; or configuring the association between MCCH scheduling and / or MCCH change notification, PDCCH timing, and SSB for scanning MCCH scheduling and / or MCCH change notifications to a specific SSB direction.

[0050] In detail, in some embodiments, the service interest-related MCCH and beam scanning configuration provided by the gNB to the UE can be sent periodically (e.g., every 5ms, 10ms, or 20ms) or semi-statically or dynamically based on the UE's reports on RRC signaling or downlink DCI.

[0051] In detail, in some embodiments, appropriate control plane (CP) scheduling configurations are as follows: Figure 7 As shown, it includes at least one of the following:

[0052] Configure appropriate control plane (CP) scheduling based on a single MCCH (i.e., with different modification and repetition periods) or multiple MCCHs (each with different modification and repetition periods, etc.).

[0053] Configure the appropriate scheduling mode within the System Information Block (SIB) defined in MBS, including the MCCH, the RNTI configuration for MCCH scheduling, and / or the RNTI configuration for MCCH change notification scheduling.

[0054] Configure the association between the MCCH search space (i.e., in the SIB), PDCCH timing, and SSB to schedule MCCH within the MBS SIB.

[0055] Configure the association between MCCH scheduling / MCCH change notification, PDCCH timing, and synchronization signal block (SSB) to scan MCCH scheduling and / or MCCH change notification to a specific SSB direction.

[0056] Regarding NR MBS PTM configuration control plane (CP) scheduling, MBS can adopt a two-step scheduling method based on SC-PTM. This involves providing scheduling configuration for the location of the Multicast Control Channel (MCCH) on the SIB carried by the BCCH. The MCCH is used to provide scheduling for the MBS channel control plane of the MBS service. The main advantage of this two-step configuration is that it provides separate MCCH scheduling independent of SIB scheduling, allowing for more flexible scheduling configurations for different MBS services in terms of repetition period, duration, and modification period. Figure 8 An example of a single MCCH configuration according to an embodiment of the present invention is shown. Figure 9 An example of a multi-MCCH configuration according to an embodiment of the present invention is illustrated. See also Figure 8 and Figure 9 In some embodiments, to handle the different needs of different MBS services in NR MBS delivery mode 2, the following options can be configured by the network (e.g., base station (e.g., gNB)) based on interests collected from UE reports or information related to service interests provided by the core network.

[0057] Option 1: The network can configure a single MCCH for each cell (or area under each gNB-DU) to provide PTM control plane (CP) scheduling configuration for gc-PDCCH / gc-PDSCH, and gc-PDCCH / gc-PDSCH to schedule / carry MTCH carrying MBS services, such as... Figure 8 As shown.

[0058] Option 2: The network can configure multiple MCCHs for each cell (or each area under gNB-DU) to provide PTM control plane (CP) scheduling configuration for the gc-PDCCH / gc-PDSCH for scheduling / bearing, and MTCHs carrying MBS services such as... Figure 9 As shown.

[0059] In some embodiments, with multiple MCCHs, in order for the base station (e.g., gNB) to determine the appropriate number of MCCHs that can be configured to schedule MBS services of interest to different UEs within a beam, the base station (e.g., gNB) needs some knowledge about how to map these services to radio bearers, since from a data plane scheduling perspective, the radio bearer is the only available channel between the UE and the base station (e.g., gNB). For the 5G NR QoS model for unicast transmission defined in TS23.501, 5GC and NG-RAN ensure downlink (DL) QoS by mapping DL packets to appropriate QoS flows and then mapping them to radio bearers in two stages. In some examples, in the first stage, 5GC associates DL packets for different services with QoS flows and QoS flow identifiers (QFIs). In some examples, in the second stage, NG-RAN maps DL QoS flows for different services to different data radio bearers (DRBs). For NR MBS, it has been agreed in RAN2-112e that the mapping between MBSDL QoS flows and MBS or multicast radio bearers (MRBs) requires the QoS flow-to-radio bearer mapping function in the Service Data Adaptation Protocol (SDAP). Therefore, a base station (e.g., gNB) can utilize knowledge about a UE's service interests reported by the UE or obtained from the 5G core (e.g., multicast) to map MBSDL OoS flows to the appropriate MBS radio bearer (MRB) SDAP function using the following method. If multiple UEs within a beam are interested in receiving these same service sets, the mapping can be performed in such a way that the base station (e.g., gNB) maps OoS flows of different MBS services to the same MRB. In this way, the base station (e.g., gNB) can configure a separate MCCH for each MRB (i.e., the number of MCCHs per beam / cell is associated with the number of MRBs configured per beam / cell). This ensures that each UE can be configured to monitor the MCCH scheduling of MRBs that bear QoS flows associated with one or more services that the UE is interested in receiving.

[0060] Figure 10 An example of MBS control channel configuration based on UE service interest and beamforming reporting according to an embodiment of the present invention is shown. For example, refer to... Figure 10 For the first beam, three MCCHs are configured for three services (e.g., service 1, service 2, and service 3), assuming their QoS flows are mapped to three MRBs. For the second beam, for example, a single MCCH is configured for a single MRB and for each service (e.g., service 1). For the third beam, for example, only two MCCHs are configured because the QoS flows associated with two services (e.g., service 1 and service 2) are mapped to a single MRB, since all UEs in the third beam are interested in receiving these services (e.g., as service 1 and service 2).

[0061] Figure 11 An example of the configuration of MCCH according to an embodiment of the present invention is shown. Figure 11 In some embodiments, the LTE method can be reused for efficient NR scheduling of MCCH within a SIB. Considering that the granularity of scheduling in NR is a time slot, the base station (e.g., gNB) can utilize an appropriate transmission window to configure MBS-specific system information blocks (e.g., MBSSIB or M-SIB) to carry the MCCH. The configuration of the transmission window may affect the configuration of the MCCH repetition period (i.e., multiple NR time slots), the MCCH modification period, the MCCH radio frame offset at the reference system frame number (SFN) boundary, the first time slot in the radio frame where the MCCH can be scheduled, and other factors. Figure 11 As shown, the duration of the MCCH can be scheduled (e.g., in terms of the number of time slots).

[0062] MCCH scheduling:

[0063] According to LTE MBMS, SC-PTM uses SC-RNTI with a fixed value to schedule the transmission of SC-MCCH messages. Since NR MBS is also scheduled intra-cell, a similar configuration can be used, but the fact that multiple MCCHs or a single MCCH can be used should be considered. Therefore, in some embodiments of the present invention, the following options can be considered for the RNTI of MCCH scheduling in NR MBS.

[0064] Option 1: The network / base station (e.g., gNB) can be configured with a fixed RNTI for MCCH scheduling if there is one MCCH per cell (or per area under gNB) to provide PTM control plane scheduling configuration for MBS services.

[0065] Option 2: The network / base station (e.g., gNB) can be configured with multiple fixed MCCH-RNTIs for scheduling multiple MCCHs. If each cell (or each area under gNB) is configured with multiple MCCHs to provide PTM control plane scheduling configuration for MBS services, then each MCCH RNTI corresponds to one MCCH.

[0066] Option 3: The network / base station (e.g., gNB) can flexibly configure the number of MCCH-RNTIs, and provide PTM control plane scheduling configuration for MBS services based on the number of MCCHs flexibly configured for each cell (or each area under gNB).

[0067] MCCH Change Notification:

[0068] In LTE, single-cell MCCH (SC-MCCH) change notifications reuse the newly introduced DCI formats of SC-N-RNTI and M-RNTI for SC-N-RNTI. However, considering that only one SC-MCCH is used for SC-PTM in a cell, only one bit in the 8-bit bitmap is used. SC-MCCH change notifications scrambled with SC-N-RNTI can be sent in the first subframe of the MCCH transmission window, notifying changes to the SC-MCCH scheduled in the same subframe. For NR MBS, RAN2#113e agrees that "it is assumed that the MCCH change notification mechanism is used to notify changes in MCCH configuration due to the initiation of a session in NR MBS transmission mode 2 (otherwise FFS, if any)." Therefore, in some embodiments of the present invention, for NR MBS change notifications, based on the LTE SC-PTM mechanism, the MCCH change notification procedure has the following options:

[0069] Option 1: The network / base station (e.g., gNB) can configure a new RNTI for the MCCH change notification of NR MBS without additional information, such as the 8-bit bitmap used in LTE.

[0070] Option 2: The base station (e.g., gNB) can configure a new RNTI and some additional information for the MCCH change notification, such as an 8-bit bitmap of the MCCH associated with the beam of interest and / or UE services.

[0071] The relationship between MCCH search space (in SIB), PDCCH timing, and SSB:

[0072] In NR, for the search space of common channels such as the Broadcast Control Channel (BCCH) and Paging Control Channel (PCCH), PDCCH timings are associated with Synchronization Signal Blocks (SSBs) in a predefined manner. Therefore, the network / base station (e.g., gNB) can scan the PDCCH in the beam direction associated with the SSB. In this way, if the UE knows the predefined mapping, the UE can receive System Information (SI) messages and paging at the PDCCH timings based on the detected SSBs, thus saving power. For NR MBS, MCCHs are also common channels, very similar to BCCHs, except that MCCHs carry different control messages (i.e., broadcast channel / multicast scheduling). Therefore, in some embodiments of the present invention, for the MCCH search space, the network / base station (e.g., gNB) can configure PDCCH timings for the MCCH search space (i.e., within the MBS SIB) and associate them with SSBs in a predefined manner, allowing the UE to receive MCCH scheduling at the PDCCH timings within the SIB based on the detected SSBs, thus saving power.

[0073] The relationship between MCCH scheduling / MCCH change notification, PDCCH timing, and SSB:

[0074] Beam scanning has been agreed upon for NR MBS user plane data scheduling, as described in the RAN1 103 protocol: for RRC_IDLE / RRC_INACTIVE UEs, group common PDCCH / PDSCH supports beam scanning. For efficient and unified service scheduling of MBS services, user control plane scheduling can also support multi-beam operation. To support MCCH beam scanning and MCCH change notifications, a set of repeating PDCCH and / or MCCH change notifications can be configured for monitoring MCCH scheduling and can be associated with SSBs used to scan MCCH scheduling and / or MCCH change notifications to a specific direction. However, the associated configuration needs to consider the design and configuration of the MCCH (e.g., single MCCH and multiple MCCH configurations) and the association of the MCCH with services of interest to the UE, as described in detail in some of the embodiments below.

[0075] Single MCCH configuration:

[0076] Figure 12 An example of the association between PDCCH timing and SSB in the MCCH search space according to an embodiment of the present invention is shown. Figure 12As illustrated, in some embodiments, for a single MCCH configuration, the network / gNB can configure multiple beams based on the beam measurement quality reported by the UE and configure a single MCCH and / or MCCH change notifications with different scheduling configurations (e.g., different modification periods and repetition periods, etc.), supporting the scheduling of MRBs configured for each beam to support the scheduling of multiple configured MRBs within a beam, as shown in the embodiments above. The network / gNB can configure a specific RNTI with an additional bitmap (e.g., an 8-bit bitmap) for each configured MCCH and / or MCCH change notification scheduling, and associate the scheduling with a monitoring timing. The network / gNB can configure the monitoring timing for each configured MCCH and / or MCCH change notification scheduling, with a set of PDCCH repetitions associated with the monitoring timing, and associate each PDCCH repetition with an SSB. The network / gNB can configure the MCCH beam scanning and / or MCCH change notification scheduling to be directed to the associated SSB direction by scanning the configured PDCCH to the associated SSB beam direction. Therefore, the UE only needs to acquire one PDCCH to receive the configuration MCCH or MCCH change notification. However, using only the above configuration, the UE within the beam will ultimately monitor multiple MCCHs. To avoid this, in some embodiments of the present invention, the network / base station (e.g., gNB) can use additional information, such as an 8-bit bitmap, to distinguish the MCCH scheduling configurations of different services used by different UEs within the same beam using the same MCCH scheduling.

[0077] Multiple MCCH configurations:

[0078] Figure 13 An example of the association between PDCCH timing and SSB in the MCCH search space according to an embodiment of the present invention is shown. Figure 13As illustrated, in some embodiments, for multiple MCCH configurations, the network / gNB can configure multiple beams and multiple MCCH and / or MCCH change notifications based on the beam measurement quality reported by the UE. Each MCCH and / or MCCH change notification has a different scheduling configuration (e.g., modification period and repetition period, etc.), supporting scheduling of MRBs configured for each beam. The network / gNB can configure RNTI for each of the configured MCCH and / or MCCH change notifications and associate each with a monitoring timing. The network / gNB can configure the monitoring timing for the configured MCCH and / or MCCH change notifications, a set of PDCCH repetitions, and associate each PDCCH repetition with an SSB. The network / gNB can configure beam scanning for MCCH and / or MCCH change notifications in the direction of the associated SSB by scanning the configured PDCCH to the associated SSB beam direction. Thus, the UE only needs to acquire one PDCCH to receive the configured MCCH scheduling or MCCH change notification. Because the configured MCCH scheduling or MCCH change notification is associated with the MRB carrying the services that the UE is interested in, even if the UE blindly monitors the PDDCH, the UE can only obtain the MCCH that provides services for the services it is interested in.

[0079] In summary, in some embodiments, the main advantages and innovations of the new flexible MBS control plane scheduling mechanism, compared to existing technologies such as the reuse of the LTE MBMS SC-PTM mechanism reported in most proposals submitted to RAN-13e, include, but are not limited to:

[0080] 1. In some embodiments, the new method provides flexible MBS scheduling that can support the diversity of 5G MBS services and the dynamics of user distribution within the service area and changes in user service interests, as required by the 3GPP document for NR MBS.

[0081] 2. In some embodiments, the new method provides separate control plane scheduling for different MBS services, which helps reduce signaling overhead, for example, for delay-tolerant services if these services are scheduled together, and delay-sensitive services are configured and scheduled together using the same control plane configuration.

[0082] 3. In some embodiments, the new method allows the UE to monitor only the MCCH configuration associated with the services that the UE is interested in receiving, and this can help reduce UE complexity.

[0083] Some embodiments of the invention offer the following commercial benefits: 1. They can solve problems in the prior art. 2. They provide flexible MBS scheduling. 3. They provide separate control plane scheduling for different MBS services. 4. They reduce signaling overhead. 5. They reduce UE complexity. 6. They provide good communication performance. 7. Some embodiments of the invention are applicable to 5G-NR chipset suppliers, V2X communication system development suppliers, automobile manufacturers (including cars, trains, trucks, buses, bicycles, motorcycles, helmets, etc.), drone (unmanned aerial vehicle) manufacturers, smartphone manufacturers, public safety communication equipment manufacturers, and AR / VR device manufacturers, for purposes such as gaming, conferences / seminars, and education. Some embodiments of the invention are combinations of "technologies / processes" that can be adopted in 3GPP specifications to create the final product. Some embodiments of the invention can be adopted in 5G NR licensed and unlicensed or shared spectrum communications. Some embodiments of the invention propose technical mechanisms.

[0084] Figure 14 This is a block diagram of a system 700 for wireless communication according to an embodiment of the present invention. The embodiments described herein can be implemented in the system using any suitably configured hardware and / or program. Figure 14 An example system 700 for one embodiment is shown, comprising radio frequency (RF) circuitry 710, baseband circuitry 720, application circuitry 730, memory / storage device 740, display 750, camera 760, sensor 770, and input / output (I / O) interface 780, all of which are coupled to each other at least as shown. The application circuitry 730 may include, for example, but not limited to, circuitry of one or more single-core or multi-core processors. The processor may include any combination of a general-purpose processor and a dedicated processor such as a graphics processor, application processor, etc. The processor may be coupled to the memory / storage device and configured to execute instructions stored in the memory / storage device to enable various applications and / or operating systems running on the system.

[0085] The baseband circuit 720 may include, for example, but not limited to, circuitry of one or more single-core or multi-core processors. The processor may include a baseband processor. The baseband circuitry can handle various radio control functions that enable communication with one or more radio networks via RF circuitry. Radio control functions may include, but are not limited to, signal modulation, encoding, decoding, RF shifting, etc. In some embodiments, the baseband circuitry can provide communication compatible with one or more radio technologies. For example, in some embodiments, the baseband circuitry may support communication with the Evolved Universal Terrestrial Radio Access Network (EUTRAN) and / or other Wireless Metropolitan Area Networks (WMAN), Wireless Local Area Networks (WLAN), and Wireless Personal Area Networks (WPAN). Embodiments in which the baseband circuitry is configured to support radio communication with more than one radio protocol may be referred to as a multi-mode baseband circuitry.

[0086] In various embodiments, the baseband circuit 720 may include circuitry that operates with a signal not strictly considered to be at the baseband frequency. For example, in some embodiments, the baseband circuitry may include circuitry that operates with a signal having an intermediate frequency (IF) between the baseband frequency and the radio frequency (RF). The RF circuitry 710 may use modulated electromagnetic radiation transmitted through a non-solid-state medium to achieve communication with a wireless network. In various embodiments, the RF circuitry may include switches, filters, amplifiers, etc., to facilitate communication with a wireless network. In various embodiments, the RF circuitry 710 may include circuitry that operates with a signal not strictly considered to be at the radio frequency (RF). For example, in some embodiments, the RF circuitry may include circuitry that operates with a signal having an intermediate frequency (IF) between the baseband frequency and the RF.

[0087] In various embodiments, the transmitter circuitry, control circuitry, or receiver circuitry discussed above with respect to user equipment, eNB, or gNB may be wholly or partially embodied in one or more of the RF circuitry, baseband circuitry, and / or application circuitry. As used herein, “circuit” may refer to, be part of, or include: a special-purpose integrated circuit (ASIC), electronic circuitry, a processor (shared, dedicated, or grouped) and / or memory (shared, dedicated, or grouped), combinational logic circuitry, and / or other suitable hardware elements that provide the described functionality. In some embodiments, the electronic device circuitry may be implemented in one or more program or firmware modules, or the functionality associated with the circuitry may be implemented by one or more program or firmware modules. In some embodiments, some or all of the components of the baseband circuitry, application circuitry, and / or memory / storage device may be implemented together on a system-on-a-chip (SOC). The memory / storage device 740 may be used to load and store, for example, messages and / or instructions for the system. The memory / storage device used in one embodiment may include any combination of suitable volatile memory such as dynamic random access memory (DRAM) and / or non-volatile memory such as flash memory.

[0088] In various embodiments, I / O interface 780 may include one or more user interfaces designed to enable user interaction with the system, and / or peripheral interface designed to enable peripheral components to interact with the system. User interfaces may include, but are not limited to, physical keyboards or keypads, touchpads, speakers, microphones, etc. Peripheral interface may include, but are not limited to, non-volatile memory ports, universal serial bus (USB) ports, audio jacks, and power interfaces. In various embodiments, sensor 770 may include one or more sensing devices to determine environmental conditions and / or location information related to the system. In some embodiments, the sensor may include, but is not limited to, a gyroscope sensor, an accelerometer, a proximity sensor, an ambient light sensor, and a positioning unit. The positioning unit may also be part of or interact with baseband and / or RF circuitry to communicate with components of a positioning network, such as Global Positioning System (GPS) satellites.

[0089] In various embodiments, display 750 may include displays such as liquid crystal displays and touch screen displays. In various embodiments, system 700 may be a mobile computing device, such as, but not limited to, laptop computing devices, tablet computing devices, netbooks, ultrabooks, smartphones, etc. In various embodiments, the system may have more or fewer components and / or different architectures. Where appropriate, the methods described herein may be implemented as computer programs. Computer programs may be stored on storage media such as non-transitory storage media.

[0090] Those skilled in the art will understand that each of the units, algorithms, and steps described and disclosed in the embodiments of the present invention is implemented using electronic hardware or a combination of a program for a computer and electronic hardware. Whether the function is executed in hardware or program depends on the conditions of the application and the design requirements of the technical plan. Those skilled in the art can implement the functionality for each specific application in different ways, and such implementations should not exceed the scope of the present invention. Those skilled in the art will understand that they can refer to the operation of the systems, devices, and units in the embodiments mentioned above, as the operation of the systems, devices, and units mentioned above is substantially the same. For ease of description and simplicity, these operation processes will not be described in detail.

[0091] It should be understood that the systems, apparatuses, and methods disclosed in the embodiments of the present invention can be implemented in other ways. The above embodiments are merely exemplary. The division of units is based solely on logical function, while other divisions may exist in practice. It is possible for multiple units or elements to be combined or integrated in another system. Certain features may also be omitted or skipped. On the other hand, the mutual coupling, direct coupling, or communication coupling shown or discussed operates through some ports, apparatuses, or units, whether indirectly or communicatively by means of electrical, mechanical, or other kinds of means.

[0092] The units used for illustration as separate elements may or may not be physically separate. The units used for display may or may not be physical units, i.e., located in one location or distributed across multiple network units. Some or all of the units may be used depending on the purpose of the embodiment. Furthermore, each functional unit in each embodiment may be integrated into a processing unit, physically independent, or integrated into a processing unit together with two or more units.

[0093] If a program functional unit is implemented and used and sold as a product, it can be stored in a readable storage medium in a computer. Based on this understanding, the technical solutions proposed in this invention can be implemented substantially or partially as a program product. Alternatively, a portion of a technical solution that is advantageous to conventional technology can be implemented as a program product. The program product in the computer is stored in a storage medium containing multiple commands for a computing device (e.g., a personal computer, server, or network device) to execute all or some of the steps disclosed in the embodiments of this invention. The storage medium includes a USB flash drive, a portable hard disk, a read-only memory (ROM), a random access memory (RAM), a floppy disk, or other types of media capable of storing program code.

[0094] Although the invention has been described in conjunction with embodiments considered to be the most practical and preferred embodiments, it should be understood that the invention is not limited to the disclosed embodiments, but is intended to cover various arrangements made without departing from the broadest interpretation of the appended claims.

Claims

1. A wireless communication method for multicast / broadcast services (MBS), the method being executed by a user equipment (UE), characterized in that, The method includes: Report the UE's services of interest and the UE's beam quality measurement report to the base station; Receive from the base station the multicast control channel (MCCH) and beam scanning configuration related to the service of interest of the UE; and Monitor the MCCH and beam scanning configuration related to the service of interest of the UE.

2. The wireless communication method according to claim 1, characterized in that, The beam quality measurement report of the UE includes at least one of the following: UE best beam report; uplink channel state information reference signal CSI-RS; or measurement quality of uplink sounding reference signal SRS.

3. The wireless communication method according to claim 2, characterized in that, The beam quality measurement report of the UE is periodic, semi-static, or aperiodic, and / or the uplink CSI-RS is used for the UE in Radio Resource Control (RRC) connected mode, and includes the reference signal received power (RSRP) measurement of the beam, the reference signal received quality (RSRQ) measurement of the beam, or the channel quality indicator (CQI) measurement of the beam and / or the measurement quality of the uplink SRS for the UE in RRC idle / inactive mode.

4. The wireless communication method according to claim 1, characterized in that, According to the report provided by the UE, the UE receives from the base station the MCCH and beam scanning configuration periodically, semi-statically, or dynamically via RRC signaling or downlink control information DCI.

5. The wireless communication method according to claim 1, characterized in that, The MCCH and beam scanning configurations include configurations based on a single MCCH or multiple MCCHs.

6. The wireless communication method according to claim 1, characterized in that, The MCCH and beam scanning configuration includes the MCCH configured within the System Information Block (SIB) defined by the MBS, the Radio Network Terminal Identifier (RNTI) configuration for MCCH scheduling, and / or the RNTI for MCCH change notification scheduling.

7. The wireless communication method according to claim 1, characterized in that, The MCCH and beam scanning configuration includes the configuration of the association between the MCCH search space, the physical downlink control channel (PDCCH) timing, and the synchronization signal block (SSB) used to schedule the MCCH within the MBS SIB.

8. The wireless communication method according to claim 1, characterized in that, The MCCH and beam scanning configuration includes MCCH scheduling and / or MCCH change notification, PDCCH timing, and configuration of the association between SSBs for scanning MCCH scheduling and / or MCCH change notification to the SSB direction.

9. A wireless communication method for multicast / broadcast services (MBS), the method being executed by a base station, characterized in that, The method includes: Receive services of interest from one or more user equipment (UEs) and beam quality measurement reports from one or more UEs; Based on the services of interest of the one or more UEs and the beam quality measurement reports of the one or more UEs, determine the multicast control channel (MCCH) and beam scanning configuration related to the services of interest of the one or more UEs; and Configure the multicast control channel (MCCH) and beam scanning configuration related to the services of interest of the one or more UEs.

10. The wireless communication method according to claim 9, characterized in that, The base station determines the MCCH and beam scanning configuration in the following way: if multiple UEs within the beam are interested in receiving the same set of services, the base station maps the QoS streams of different MBS services of the services of interest to the same MBS or multicast radio bearer MRB.

11. The wireless communication method according to claim 9, characterized in that, The base station determines the MCCH and beam scanning configuration by configuring a separate multicast control channel (MCCH) for each multicast radio bearer (MRB) to ensure that each UE can be configured to monitor the scheduling of the MCCH of the MRB carrying a Quality of Service (QoS) flow related to the service that the UE is interested in receiving.

12. The wireless communication method according to claim 9, characterized in that, The base station determines the MCCH and beam scanning configuration by configuring multiple beams and a single MCCH and / or MCCH change notifications with different scheduling configurations based on the beam quality measurement reports reported by one or more UEs. The scheduling configurations include different modification periods and repetition periods to support the scheduling of multiple MRBs configured for each beam.

13. The wireless communication method according to claim 12, characterized in that, The base station determines the MCCH and beam scanning configuration by means of the following: the base station notifies the scheduling configuration of each configured MCCH and / or MCCH change, configures a specific RNTI with an additional bitmap, and configures the scheduling associated with the monitoring timing.

14. The wireless communication method according to claim 9, characterized in that, The base station determines the MCCH and beam scanning configuration in the following manner: the base station configures multiple beams and multiple MCCHs based on the beam quality measurement reports reported by one or more UEs, wherein each MCCH has a different scheduling configuration, the scheduling configuration including a modification period and a repetition period to support the scheduling of MRBs configured for each beam.

15. The wireless communication method according to claim 14, characterized in that, The base station determines the MCCH and beam scanning configuration by notifying the RNTI of each configured MCCH and / or MCCH change without attaching a bitmap, and associates each configuration with a monitoring timing.

16. The wireless communication method according to claim 9, characterized in that, The base station determines the MCCH and beam scanning configuration in the following manner: configuring each configured MCCH and / or MCCH change notification scheduling configuration monitoring timing, associating each PDCCH repetition with a set of PDCCH repetitions associated with the SSB.

17. The wireless communication method according to claim 9, characterized in that, The base station determines the MCCH and beam scanning configuration by scanning the configured PDCCH to the associated SSB beam direction, and configuring the beam scanning and / or MCCH change notification scheduling configuration for the MCCH to the associated SSB direction.

18. The wireless communication method according to claim 9, characterized in that, The base station determines the MCCH and beam scanning configuration in the following way, and configures the one or more UEs to acquire only one PDCCH to receive the MCCH configuration or MCCH change notification associated with the services of interest of the one or more UEs.

19. The wireless communication method according to claim 9, characterized in that, The beam quality measurement report of the UE includes at least one of the following: UE best beam report; uplink channel state information reference signal CSI-RS; or measurement quality of uplink sounding reference signal SRS.

20. The wireless communication method according to claim 19, characterized in that, The beam quality measurement report of the UE is periodic, semi-static, or aperiodic, and / or the uplink CSI-RS is used for the UE in Radio Resource Control (RRC) connected mode, and includes the reference signal received power (RSRP) measurement of the beam, the reference signal received quality (RSRQ) measurement of the beam, or the channel quality indicator (CQI) measurement of the beam and / or the measurement quality of the uplink SRS for the UE in RRC idle / inactive mode.

21. The wireless communication method according to claim 9, characterized in that, The base station periodically, semi-statically, or dynamically configures the MCCH and beam scanning configuration to the UE via RRC signaling or downlink control information (DCI).

22. The wireless communication method according to claim 9, characterized in that, The base station determines the MCCH and beam scanning configuration in the following way, configuring the MCCH and beam scanning configuration based on a single MCCH or multiple MCCHs.

23. The wireless communication method according to claim 22, characterized in that, The base station is configured to configure a single MCCH in each cell or area under the base station, including the area under the gNB distribution unit, and to provide point-to-multipoint PTM control plane CP scheduling configuration for multiple group common (gc)-PDCCHs or multiple gc-physical downlink shared channel PDSCHs. The multiple gc-physical downlink shared channel PDSCHs are used to schedule multiple multicast service channels MTCHs carrying MBS services.

24. The wireless communication method according to claim 22, characterized in that, The base station is configured to configure multiple MCCHs in each cell or area under the base station, including the area under the gNB distribution unit, and provide PTM CP scheduling configuration for multiple gc-PDCCHs or multiple gc-PDSCHs that schedule the multicast service channel MTCH carrying MBS services.

25. The wireless communication method according to claim 9, characterized in that, The base station determines the MCCH and beam scanning configuration by configuring the MCCH within the System Information Block (SIB) defined by the MBS, configuring the Radio Network Terminal Identifier (RNTI) for MCCH scheduling, and / or configuring the RNTI for MCCH change notification scheduling.

26. The wireless communication method according to claim 25, characterized in that, If each cell or region under the base station has a single MCCH, the base station is configured to configure a fixed RNTI for MCCH scheduling to provide PTM CP scheduling configuration for MBS services.

27. The wireless communication method according to claim 25, characterized in that, The base station is configured to configure multiple fixed MCCH RNTIs for scheduling multiple MCCHs. If multiple MCCHs are configured in each cell or area under the base station in the area including the gNB distribution unit, then each MCCH RNTI corresponds to one MCCH to provide PTM CP scheduling configuration for MBS services.

28. The wireless communication method according to claim 25, characterized in that, The base station is configured to flexibly configure multiple MCCH RNTIs based on the number of MCCHs flexibly configured for each cell or region contained in the area under the gNB distribution unit of the base station, in order to provide PTM CP scheduling configuration for MBS services.

29. The wireless communication method according to claim 9, characterized in that, The base station determines the MCCH and beam scanning configuration in the following way, and configures the correlation between the MCCH search space, PDCCH timing and synchronization signal block SSB for scheduling MCCH within MBS SIB.

30. The wireless communication method according to claim 9, characterized in that, The base station determines the MCCH and beam scanning configuration in the following way, and configures the association between MCCH scheduling and / or MCCH change notification, PDCCH timing and SSB, so as to scan MCCH scheduling and / or MCCH change notification to a specific direction.

31. The wireless communication method according to claim 9, characterized in that, The base station is configured to configure a new RNTI for the MBS's MCCH change notification without additional information.

32. The wireless communication method according to claim 9, characterized in that, The base station is configured to use some additional information for associating the MCCH with the UE's best quality beam and / or the UE's services of interest to configure a new RNTI for MCCH change notification.

33. A user equipment (UE), characterized in that, include: Memory; transceiver; as well as The processor is coupled to the memory and the transceiver; The processor is configured to perform the method as described in any one of claims 1 to 8.

34. A base station, characterized in that, include: Memory; transceiver; as well as The processor is coupled to the memory and the transceiver; The processor is configured to perform the method as described in any one of claims 9 to 32.

35. A non-transitory machine-readable storage medium having instructions stored thereon, characterized in that, When the instructions are executed by a computer, the computer performs the method as described in any one of claims 1 to 32.

36. A chip, characterized in that, include: The processor is configured to invoke and run a computer program stored in memory to cause a device on which the chip is mounted to perform the method as described in any one of claims 1 to 32.

37. A computer-readable storage medium, characterized in that, The computer program is stored thereon, wherein the computer program causes the computer to perform the method as described in any one of claims 1 to 32.

38. A computer program product, characterized in that, Includes a computer program, wherein the computer program causes the computer to perform the method as described in any one of claims 1 to 32.

39. A computer program, characterized in that, The computer program causes the computer to perform the method as described in any one of claims 1 to 32.

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