CN110401922A

CN110401922A - A kind of multicast transmission method and communication equipment

Info

Publication number: CN110401922A
Application number: CN201810381010.2A
Authority: CN
Inventors: 李秉肇; 王学龙; 高永强; 于映辉
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2018-04-25
Filing date: 2018-04-25
Publication date: 2019-11-01
Anticipated expiration: 2038-04-25
Also published as: CN110401922B; WO2019206075A1

Abstract

The embodiment of the present application discloses a kind of multicast transmission method and communication equipment, for improving multicast transmission efficiency.The embodiment of the present application provides a kind of multicast transmission method, it include: that network equipment determination reports configuration information, wherein, the mark of wave beam workable for the service identification for reporting configuration information to be used to indicate the multicast service transmitted, the multicast service reports mapping relations between resource, the multicast service for reporting resource to use for the expectation of reporting terminal equipment and corresponding wave beam mark；The network equipment reports configuration information described in sending.

Description

Multicast transmission method and communication equipment

Technical Field

The present application relates to the field of communications technologies, and in particular, to a multicast transmission method and a communication device.

Background

The Multicast technology introduced first in a Long Term Evolution (LTE) system is evolved Multimedia Broadcast Multicast Service (eMBMS) technology. In the eMBMS technology, all cells in an area are required to simultaneously transmit the same content, and if User Equipment (UE) is distributed in only a part of the cells, the transmission efficiency of the eMBMS technology is relatively low.

Single Cell-Point To Multipoint (SC-PTM) is a multicast transmission technique. The SC-PTM technique is different from the eMBMs technique in that a cell simultaneously schedules Service data to a plurality of UEs through a Group-radio network Temporary Identity (G-RNTI), and each G-RNTI may be associated with a Multimedia Broadcast Multicast Service (MBMS) Service. In one area, only the cell containing the user needs to send data, and the cell not containing the user does not need to send data, so that air interface resources can be saved. Currently, SC-PTM technology does not support transmission in Carrier Aggregation (CA).

The SC-PTM technique transmits multicast traffic on a Physical Downlink Shared Channel (PDSCH). Unlike the PDSCH carrying unicast data, the PDSCH carrying multicast data is referred to as a multicast PDSCH. In the SC-PTM transmission process, a base station sends Downlink Control Information (DCI) carried on a Physical Downlink Control Channel (PDCCH) to a group of UEs in a cell, and then the group of UEs receives a multicast PDSCH according to scheduling Information included in the DCI.

In the related art, a fifth Generation mobile communication (5th-Generation, 5G) system employs a beam-based transmission technology, and it is necessary to transmit beams in different directions in order to cover UEs in different areas in a cell. Such as the transmission of system information, needs to be transmitted once in each beam direction covering the cell. Similarly, if multicast transmission is performed in a 5G cell, the multicast channel needs to be repeatedly transmitted on each beam. Due to different requirements of different UEs for multicast services, the same service data is repeatedly transmitted on each beam according to the prior art, which results in resource waste and reduces multicast transmission efficiency.

Disclosure of Invention

The embodiment of the application provides a multicast transmission method and communication equipment, which are used for improving the multicast transmission efficiency.

In order to solve the above technical problem, an embodiment of the present application provides the following technical solutions:

in a first aspect, an embodiment of the present application provides a multicast transmission method, including: the network equipment determines reporting configuration information, wherein the reporting configuration information is used for indicating a service identifier of a multicast service being transmitted, a beam identifier usable by the multicast service, and a mapping relation between reporting resources, and the reporting resources are used for reporting the multicast service expected to be used by the terminal equipment and the corresponding beam identifier; and the network equipment sends the reporting configuration information.

In the embodiment of the present application, after determining the reporting configuration information, the network device sends the reporting configuration information to the terminal device, and the terminal device reports the reporting resource corresponding to the beam identifier to the network device, so that the multicast service expected to be received by the terminal device and the corresponding beam identifier can be determined by using the reporting resource used by the network device. Through the mapping relation between the reporting resources used by the terminal equipment and the wave beams and the multicast service, the network equipment can determine which wave beams have which terminal equipment expected to receive which multicast service, and then the network equipment can determine to send downlink wave beams according to the determined result information, so that the multicast service is sent without adopting a broadcasting mode, the multicast service is sent with pertinence, and the transmission efficiency of the multicast service is improved.

In one possible design of the first aspect, the method further includes: the network device sends service control information, wherein the service control information comprises: and the service identifier of the multicast service. The network device may send the service control information in addition to the reporting configuration information. The reporting configuration information and the service control information may be sent in the same information, or may be sent separately by using two separate pieces of information, and the service control information sent by the network device may include a service identifier of the multicast service being transmitted, so that the terminal device receiving the service control information may determine which multicast service is being transmitted, and further, the terminal device may determine which multicast service or services is/are expected to be received.

In a possible design of the first aspect, the service control information further includes configuration information of a service transmission resource of the multicast service, where the service transmission resource includes at least one of the following resources: the radio network temporary identifier RNTI corresponding to the multicast service, the time information corresponding to the multicast service and the physical control channel resource corresponding to the multicast service. The service transmission resource is a transmission resource used by the network device to send the multicast service, and through the configuration information of the service transmission resource, the terminal device can determine the transmission resource used by the network device to send the multicast service, and the terminal device can receive the multicast service sent by the network device by using the service transmission resource. The terminal device may use any of the above resources as a service transmission resource.

In a possible design of the first aspect, after the network device sends the reporting configuration information, the method further includes: and the network equipment detects the reported resource, and determines the multicast service expected to be received by the terminal equipment and the beam identifier which can be used by the terminal equipment according to the detection result. The reporting configuration information sent by the network device to the terminal device indicates a mapping relationship between the following three: service identification of the multicast service being transmitted, beam identification usable by the multicast service, and reporting resources. The terminal device reports the report resource, the network device can also detect the report resource, and the network device can determine the multicast service expected to be received by the terminal device and the beam identifier used by the terminal device according to the mapping relation through the report resource detected by the network device. Through the mapping relation between the reporting resources used by the terminal equipment and the beam and the multicast service, the network equipment can determine which beams have which terminal equipment expects to receive which multicast service, and then the network equipment can determine to send downlink beams according to the determined result information.

In a possible design of the first aspect, after determining, according to the detection result, the multicast service that the terminal device desires to receive and the beam identifier that the terminal device can use, the method further includes: and the network equipment schedules the multicast service which is expected to be received by the terminal equipment on the wave beam corresponding to the wave beam identification which can be used by the terminal equipment. After the network device determines the multicast service and the beam identifier that the terminal device expects to receive through detecting the reported resource, the network device schedules the multicast service that the terminal device expects to receive on the beam corresponding to the beam identifier that the terminal device can use, so that the network device sends the multicast service in the embodiment of the application is performed for the terminal device that expects to receive the multicast service, and does not need to broadcast for all the terminal devices, thereby improving the transmission efficiency of the multicast service.

In a possible design of the first aspect, when the reporting configuration information is used to indicate a mapping relationship between a service identifier of a multicast service, a beam set, and a reporting resource, the reporting resource includes: uplink resources dedicated to the terminal device; the network device detecting the reported resource includes: and the network equipment detects a measurement result aiming at least one wave beam in the wave beam set and reported by the terminal equipment on the special uplink resource. When the reporting configuration information determined by the network device indicates a mapping relationship among the service identifier, the beam set and the reporting resource, the terminal device measures the beams in the beam set and generates a measurement result of at least one beam, the terminal device determines whether to expect to receive the multicast service on at least one beam, and when the terminal device expects to receive a certain multicast service, the terminal device can use the dedicated uplink resource allocated by the network device to report. Therefore, in a scenario where the network device allocates the dedicated uplink resource, the network device detects, on the dedicated uplink resource, a measurement result for at least one beam in the beam set, which is reported by the terminal device, so that the network device can determine the beam used by the terminal device.

In a possible design of the first aspect, the reporting the configuration information further includes: the terminal equipment reports the used lead code and time-frequency resource; the network device detecting the reported resource includes: and the network equipment detects the lead code sent by the terminal equipment on the time-frequency resource. The network device may indicate, to the terminal device, a usable preamble and a time-frequency resource corresponding to the preamble. And the terminal equipment determines the usable lead code and the time-frequency resource through the reported configuration information. The terminal device may send the preamble to the network device on the time-frequency resource corresponding to the beam identifier. The reporting configuration information comprises a lead code used for reporting and a time-frequency resource corresponding to the lead code, and the terminal equipment uses the time-frequency resource to send the lead code to indicate that the terminal equipment expects to receive the multicast service on a beam corresponding to the beam identifier.

In a possible design of the first aspect, the reporting the configuration information further includes: and the terminal equipment reports the adopted first period periodically. The reporting configuration information determined by the network device further includes reporting period information, where the reporting period is a first period, and the terminal device may perform periodic reporting according to the first period, so that the network device may receive, according to the first period, a report that the terminal device uses a reporting resource.

In a possible design of the first aspect, the sending, by the network device, the reporting configuration information includes: the network equipment receives a multicast service request message sent by terminal equipment; and the network equipment sends the reporting configuration information to the terminal equipment according to the multicast service request message. The terminal device may first send a multicast service request message to the network device, and the network device may receive the multicast service request message sent by the terminal device, so that the network device determines which terminal device requests the multicast service, and the network device may reply the report configuration information to the terminal device.

In a possible design of the first aspect, the sending, by the network device, the reporting configuration information includes: and the network equipment respectively sends the reporting configuration information through beams in different directions. In addition to sending the reporting configuration information based on the request of the terminal device, in the embodiment of the present application, the network device may also send the reporting configuration information in beams in different directions, so that the terminal devices in the coverage areas of the beams in different directions may all receive the reporting configuration information configured by the network device.

In a possible design of the first aspect, the sending, by the network device, the reporting configuration information includes: the network equipment sends a system broadcast message for indicating the reporting configuration information; or, the network device sends the reporting configuration information through a multicast service control channel. Specifically, the network device may send a system broadcast message, and indicate the reporting configuration information through the system broadcast message, or the network device carries the reporting configuration information in a multicast service control channel. In this implementation scenario, the terminal device may acquire the reporting configuration information, for example, the terminal device may acquire the reporting configuration information from a system broadcast message, or read the reporting configuration information from a multicast service control channel. Further, before the terminal device reads the multicast service control channel, the method further includes sending a request to the network device, and requesting the network device to send the reporting configuration information.

In a second aspect, an embodiment of the present application further provides a multicast transmission method, including: the method comprises the steps that terminal equipment acquires reporting configuration information sent by network equipment, wherein the reporting configuration information is used for indicating a service identifier of a multicast service being transmitted, a beam identifier which can be used by the multicast service and a mapping relation between reporting resources, and the reporting resources are used for reporting the multicast service expected to be used by the terminal equipment and the corresponding beam identifier; and when the terminal equipment determines that the multicast service is expected to be received, the terminal equipment reports the multicast service to the network equipment by using the reporting resource corresponding to the beam identifier.

In one possible design of the second aspect, the method further includes: the terminal device obtains service control information sent by the network device, wherein the service control information comprises: and the service identification of the multicast service being transmitted. The terminal equipment can receive the service control information besides the reporting configuration information. If the reporting configuration information is sent and the service control information is sent in the same information, the terminal device may receive the service control information and the reporting configuration information through one information. If the reporting configuration information and the service control information are separately sent by using two independent pieces of information, the terminal device may receive the service control information and the reporting configuration information sent by the network device, respectively. The service control information received by the terminal device may include a service identifier of the multicast service being transmitted, so that the terminal device may determine which multicast service is being transmitted, and further, the terminal device may determine which multicast service or services is/are expected to be received.

In one possible design of the second aspect, the traffic control information further includes configuration information of traffic transmission resources of the multicast traffic, where the traffic transmission resources include at least one of the following resources: a Radio Network Temporary Identifier (RNTI) corresponding to the multicast service, time information corresponding to the multicast service and a physical control channel corresponding to the multicast service; the method further comprises the following steps: and the terminal equipment receives the multicast service sent by the network equipment by using the service transmission resource. The service transmission resource is a transmission resource used by the network device to send the multicast service, and through the configuration information of the service transmission resource, the terminal device can determine the transmission resource used by the network device to send the multicast service, and the terminal device can receive the multicast service sent by the network device by using the service transmission resource.

In one possible design of the second aspect, the method further includes: when the reporting configuration information is used for indicating a mapping relation among a service identifier, a beam set and reporting resources of a multicast service, the terminal equipment measures beams in the beam set and generates a measurement result of at least one beam; the terminal device determines whether reception of the multicast traffic is desired on the at least one beam. When the reporting configuration information determined by the terminal device indicates a mapping relationship among the service identifier, the beam set, and the reporting resource, the terminal device measures the beams in the beam set and generates a measurement result of at least one beam, and the terminal device determines whether to expect to receive the multicast service on the at least one beam, for example, the terminal device determines that the beam of which the measurement result is greater than the measurement threshold is the beam used by the terminal device.

In a possible design of the second aspect, the reporting resource includes: uplink resources dedicated to the terminal device; the reporting resource corresponding to the beam identifier is used by the terminal device to report to the network device, and the reporting resource comprises: and the terminal equipment sends reporting information used for indicating the measurement result of the at least one beam to the network equipment by using the uplink resource special for the terminal equipment. When the terminal device expects to receive a certain multicast service, the terminal device may use a dedicated uplink resource allocated by the network device to report. Therefore, in a scenario where the network device allocates the dedicated uplink resource, the terminal device reports a measurement result for at least one beam in the beam set, so that the network device can determine the beam used by the terminal device. For example, the network device determines the beam with the measurement result greater than the measurement threshold as the beam used by the terminal device.

In a possible design of the second aspect, the reporting the configuration information includes: the method comprises the following steps that the terminal equipment reports to the network equipment by using reporting resources corresponding to the beam identifiers, and comprises the following steps: and the terminal equipment sends the lead code to the network equipment on the time-frequency resource corresponding to the beam identifier. The network device may indicate, to the terminal device, a usable preamble and a time-frequency resource corresponding to the preamble. And the terminal equipment determines the usable lead code and the time-frequency resource through the reported configuration information. The terminal device may send the preamble to the network device on the time-frequency resource corresponding to the beam identifier. The reporting configuration information comprises a lead code used for reporting and a time-frequency resource corresponding to the lead code, and the terminal equipment uses the time-frequency resource to send the lead code to indicate that the terminal equipment expects to receive the multicast service on a beam corresponding to the beam identifier. The network device detects the lead code sent by the terminal device on the time-frequency resource, so that the network device determines the beam identifier used by the terminal device and the multicast service expected to be received by the terminal device through the detected lead code.

In a possible design of the second aspect, the reporting, by the terminal device, to the network device using a reporting resource corresponding to the beam identifier includes: the terminal device reports to the network device periodically in a first period, where the first period is a predefined period or a period obtained from the reporting configuration information. The reporting configuration information determined by the network device further includes reporting period information, where the reporting period is a first period, and if the terminal device locally pre-configures the first period, the terminal device may perform periodic reporting according to the first period, so that the network device may receive, according to the first period, a report that the terminal device uses the reporting resource.

In one possible design of the second aspect, the method further includes: and when the terminal equipment determines that the multicast service is stopped according to the service control information, the terminal equipment stops using the reporting resource for reporting. When the terminal device is not interested in continuously receiving a certain multicast service, the terminal device stops using the reporting resource for reporting, the network device cannot detect the reporting resource used by the terminal device any more, the network device determines that the terminal device does not expect to receive the multicast service any more, and the network device can stop sending the multicast service to the terminal device, so that transmission resources are saved, and multicast transmission efficiency is improved.

In a third aspect, an embodiment of the present application provides a network device, including: a processing module, configured to determine reporting configuration information, where the reporting configuration information is used to indicate a service identifier of a multicast service being transmitted, a beam identifier usable by the multicast service, and a mapping relationship between reporting resources, where the reporting resources are used to report the multicast service expected to be used by a terminal device and a corresponding beam identifier; and the sending module is used for sending the reporting configuration information.

In a possible design of the third aspect, the sending module is further configured to send traffic control information, where the traffic control information includes: and the service identifier of the multicast service.

In a possible design of the third aspect, the service control information further includes configuration information of a service transmission resource of the multicast service, where the service transmission resource includes at least one of the following resources: the radio network temporary identifier RNTI corresponding to the multicast service, the time information corresponding to the multicast service and the physical control channel resource corresponding to the multicast service.

In a possible design of the third aspect, the network device further includes: and the processing module is further configured to control the receiving module to detect the reported resource, and determine, according to a detection result, a multicast service that the terminal device desires to receive and a beam identifier that the terminal device can use.

In a possible design of the third aspect, the processing module is further configured to control the sending module to schedule the multicast service that the terminal device desires to receive on a beam corresponding to the beam identifier that the terminal device can use, after determining, according to the detection result, the multicast service that the terminal device desires to receive and the beam identifier that the terminal device can use.

In a possible design of the third aspect, when the reporting configuration information is used to indicate a mapping relationship between a service identifier of a multicast service, a beam set, and a reporting resource, the reporting resource includes: uplink resources dedicated to the terminal device;

the processing module is further configured to control the receiving module to detect, on the dedicated uplink resource, a measurement result for at least one beam in the beam set, where the measurement result is reported by the terminal device.

In a possible design of the third aspect, the reporting the configuration information further includes: the terminal equipment reports the used lead code and time-frequency resource; the processing module is further configured to control the receiving module to detect the preamble sent by the terminal device on the time-frequency resource.

In a possible design of the third aspect, the reporting the configuration information further includes: and the terminal equipment reports the adopted first period periodically.

In a fourth aspect, an embodiment of the present application further provides a communication device, including: a processing module, configured to acquire reporting configuration information sent by a network device, where the reporting configuration information is used to indicate a service identifier of a multicast service being transmitted, a beam identifier usable by the multicast service, and a mapping relationship between reporting resources, where the reporting resources are used to report the multicast service expected to be used by a communication device and a corresponding beam identifier; and a sending module, configured to report, when the communication device determines that it is expected to receive the multicast service, to the network device using the reporting resource corresponding to the beam identifier.

In a possible design of the fourth aspect, the processing module is further configured to acquire service control information sent by the network device, where the service control information includes: and the service identification of the multicast service being transmitted.

In a possible design of the fourth aspect, the traffic control information further includes configuration information of traffic transmission resources of the multicast traffic, where the traffic transmission resources include at least one of the following resources: a Radio Network Temporary Identifier (RNTI) corresponding to the multicast service, time information corresponding to the multicast service and a physical control channel corresponding to the multicast service; the communication device further includes: and the receiving module is used for receiving the multicast service sent by the network equipment by using the service transmission resource.

In a possible design of the fourth aspect, the processing module is further configured to measure a beam in the beam set and generate a measurement result of at least one beam when the reporting configuration information is used to indicate a mapping relationship between a service identifier of a multicast service, the beam set, and a reporting resource; determining whether reception of the multicast traffic is desired on the at least one beam.

In a possible design of the fourth aspect, the reporting resource includes: an uplink resource dedicated to the communication device; the sending module is further configured to send, to the network device, report information indicating a measurement result of the at least one beam by using the uplink resource dedicated to the communication device.

In a possible design of the fourth aspect, the reporting the configuration information includes: the sending module is further configured to send the preamble to the network device on the time-frequency resource corresponding to the beam identifier.

In a possible design of the fourth aspect, the sending module is further configured to report to the network device periodically with a first period, where the first period is a predefined period or a period obtained from the reporting configuration information.

The respective possible designs of the communication devices of the third to fourth aspects have the same effect as the corresponding possible designs of the methods of the first to second aspects, and are not repeated.

In a fifth aspect, a communication device is provided, comprising a processor and a transceiver, the processor performing the method of the first to second aspects.

In a sixth aspect, a communication device is provided that includes a processor, and an interface. The processor performs the method of the first to second aspects.

In a seventh aspect, there is provided a communication device comprising a memory, a processor and a program stored on the memory and executable on the processor, the processor implementing the method of the first to second aspects when executing the program. It should be noted that the memory may be non-volatile or volatile, and may be located inside or outside the communication device.

In an eighth aspect, a communication device is provided that may use the method of the first to second aspects. The communication device may be a network device or a terminal device, or may be hardware that implements a similar function.

In a ninth aspect, a system is provided, where the system includes the terminal device, the network device, and the core network device.

In a tenth aspect, a computer-readable storage medium is provided for storing a computer program comprising instructions for performing the method of any one of the possible implementations of the first to second aspects.

In an eleventh aspect, there is provided a computer program product comprising: computer program code for causing a computer to perform the method of any of the possible implementations of the first to second aspects described above, when the computer program code runs on a computer.

Drawings

Fig. 1 is a schematic diagram of a communication system architecture to which a multicast transmission method according to an embodiment of the present invention is applied;

fig. 2 is a schematic view of an interaction flow between a network device and a terminal device according to an embodiment of the present application;

fig. 3 is a schematic flowchart of a multicast transmission method according to an embodiment of the present application;

fig. 4 is a schematic flowchart of another multicast transmission method according to an embodiment of the present application;

fig. 5 is a schematic view of an interaction scenario between a network device and a terminal device in a communication system according to an embodiment of the present application;

fig. 6 is a schematic view of another interaction flow between a network device and a terminal device according to an embodiment of the present application;

fig. 7 is a schematic diagram of an SC-MTCH for transmitting a service according to an embodiment of the present application;

fig. 8 is a schematic structural diagram of a network device according to an embodiment of the present application;

fig. 9 is a schematic structural diagram of another network device according to an embodiment of the present application;

fig. 10 is a schematic structural diagram of another network device according to an embodiment of the present application;

fig. 11 is a schematic structural diagram of another network device according to an embodiment of the present application;

fig. 12 is a schematic structural diagram of a terminal device according to an embodiment of the present application;

fig. 13 is a schematic structural diagram of another terminal device provided in the embodiment of the present application;

fig. 14 is a schematic structural diagram of another terminal device provided in the embodiment of the present application;

fig. 15 is a schematic structural diagram of another terminal device according to an embodiment of the present application.

Detailed Description

The terms "first," "second," and the like in the description and in the claims of the present application and in the above-described drawings are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances and are merely descriptive of the various embodiments of the application and how objects of the same nature can be distinguished. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of elements is not necessarily limited to those elements, but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

The embodiment of the invention provides a solution based on the communication system shown in fig. 1. An embodiment of the present invention provides a communication system 100. The communication system 100 comprises at least one network device 20 and at least one terminal device 10, which is exemplified by one terminal device in fig. 1. The access network device may be a base station that is connected to other network devices 60.

The technical scheme of the embodiment of the invention can be applied to various data processing communication systems, such as: such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), single carrier frequency division multiple access (SC-FDMA), and other systems. The term "system" may be used interchangeably with "network". CDMA systems may implement wireless technologies such as Universal Terrestrial Radio Access (UTRA), CDMA2000, and the like. UTRA may include Wideband CDMA (WCDMA) technology and other CDMA variant technologies. CDMA2000 may cover the Interim Standard (IS) 2000(IS-2000), IS-95 and IS-856 standards. TDMA systems may implement wireless technologies such as global system for mobile communications (GSM). The OFDMA system may implement wireless technologies such as evolved universal terrestrial radio access (E-UTRA), Ultra Mobile Broadband (UMB), IEEE 802.11(Wi-Fi), IEEE 802.16(WiMAX), IEEE 802.20, Flash OFDMA, etc. UTRA and E-UTRA are UMTS as well as UMTS evolved versions. Various versions of 3GPP in Long Term Evolution (LTE) and LTE-based evolution are new versions of UMTS using E-UTRA. The fifth Generation (5Generation, abbreviated as "5G") communication system and the New Radio (NR) are the next Generation communication systems under study. In addition, the communication system 100 may also be applied to future-oriented communication technologies, and all the technologies provided by the embodiments of the present invention are applied. The system architecture and the service scenario described in the embodiment of the present invention are for more clearly illustrating the technical solution of the embodiment of the present invention, and do not form a limitation on the technical solution provided in the embodiment of the present invention, and it can be known by those skilled in the art that the technical solution provided in the embodiment of the present invention is also applicable to similar technical problems along with the evolution of the network architecture and the appearance of a new service scenario.

Fig. 1 illustrates a structure that a communication system according to an embodiment of the present application may be a Radio Access Network (RAN). The RAN may be a base station access system of a 2G network (i.e. the RAN comprises base stations and base station controllers), or may be a base station access system of a 3G network (i.e. the RAN comprises base stations and RNCs), or may be a base station access system of a 4G network (i.e. the RAN comprises enbs and RNCs), or may be a base station access system of a 5G network.

The RAN includes one or more network devices 20. The CN may be an MME and/or an S-GW of a 4G network, or may be an SGSN or a GGSN of a 3G network, or may be an Access and Mobility Management Function (AMF) entity of a next generation Core network (NG-Core) of a 5G network, or a User Plane Function (UPF) entity, or a Session Management Function (SMF). The network device 20 may be any device with wireless transceiving function, or a chip disposed in a device with wireless transceiving function. The network devices 20 include, but are not limited to: a base station (e.g. a base station BS, a base station NodeB, an evolved base station eNodeB or eNB, a base station gdnodeb or gNB in a fifth generation 5G communication system, a base station in a future communication system, an access node in a WiFi system, a wireless relay node, a wireless backhaul node), etc. The base station may be: macro base stations, micro base stations, pico base stations, small stations, relay stations, etc. A network, or future evolution network, in which multiple base stations may support one or more of the technologies mentioned above. The core network may support a network of one or more of the above mentioned technologies, or a future evolution network. A base station may contain one or more Transmission Receiving Points (TRPs) that are co-sited or non-co-sited. The network device 20 may also be a wireless controller, a Centralized Unit (CU), a Distributed Unit (DU), or the like in a Cloud Radio Access Network (CRAN) scenario. The network device may also be a server, a wearable device, or a vehicle mounted device, etc. The following description will be given taking the network device 20 as a base station as an example. The plurality of network devices 20 may be base stations of the same type or different types. The base station may communicate with the terminal device 10, or may communicate with the terminal device 10 through a relay station. The terminal 10 may support communication with multiple base stations of different technologies, for example, a terminal device may support communication with a base station supporting an LTE network, may support communication with a base station supporting a 5G network, and may support dual connectivity with a base station of an LTE network and a base station of a 5G network. Such as a Radio Access Network (RAN) node that accesses the terminal to a wireless network. Currently, some examples of RAN nodes are: a gbb, a Transmission Reception Point (TRP), an evolved Node B (eNB), a Radio Network Controller (RNC), a Node B (NB), a Base Station Controller (BSC), a Base Transceiver Station (BTS), a home base station (e.g., home evolved NodeB or home Node B, HNB), a Base Band Unit (BBU), or a wireless fidelity (Wifi) Access Point (AP), etc. In one network configuration, a network device may include a Centralized Unit (CU) node, or a Distributed Unit (DU) node, or a RAN device including a CU node and a DU node.

The terminal device 10, also called User Equipment (UE), a Mobile Station (MS), a Mobile Terminal (MT), a terminal, etc., is a device for providing voice and/or data connectivity to a user, or a chip disposed in the device, such as a handheld device, a vehicle-mounted device, etc., which has wireless connectivity. Currently, some examples of terminal devices are: a mobile phone (mobile phone), a tablet computer, a notebook computer, a palm top computer, a Mobile Internet Device (MID), a wearable device, a Virtual Reality (VR) device, an Augmented Reality (AR) device, a wireless terminal in industrial control (industrial control), a wireless terminal in self driving (self driving), a wireless terminal in remote surgery (remote medical supply), a wireless terminal in smart grid (smart grid), a wireless terminal in transportation safety (smart security), a wireless terminal in city (smart city), a wireless terminal in home (smart home), and the like.

Referring to fig. 2, a schematic view of an interaction flow between a network device and a terminal device according to an embodiment of the present application is shown, where the information processing method according to the embodiment of the present application mainly includes the following steps:

s01, the network device determines reporting configuration information, where the reporting configuration information is used to indicate a service identifier of a multicast service being transmitted, a beam identifier usable by the multicast service, and a mapping relationship between reporting resources, and the reporting resources are used to report the multicast service expected to be used by the terminal device and a corresponding beam identifier.

In this embodiment, the network device may refer to a base station, for example, the base station determines to report the configuration information. The network device may transmit the multicast traffic to the terminal device, and the network device needs to detect the multicast traffic that the terminal device desires to receive, so as to determine which multicast traffic needs to be sent to which terminal device. In order to enable the terminal device to report according to the requirement of the network device, the network device first determines reporting configuration information. The reporting configuration information indicates the mapping relationship among the following three: the method comprises the steps of service identification of the multicast service being transmitted, beam identification which can be used by the multicast service and reporting resources, wherein the service identification is used for identifying the specific multicast service, the beam identification is used for identifying the beam which can be used by the multicast service, the reporting resources are the resources which can be used by the terminal equipment for reporting to the network equipment, and the reporting resources are used for reporting the multicast service which the terminal equipment expects to use and the corresponding beam identification. The network device indicates the mapping relation among the service identifier, the beam identifier and the reporting resource through the reporting configuration information, and when the terminal device determines to use the reporting resource for reporting, the network device can determine the multicast service corresponding to the reporting resource and the corresponding beam identifier through the reporting configuration information.

For example, as follows, the network device configures two types of reporting resources, namely resource 1 and resource 2, for the terminal device, where resource 1 corresponds to service identifier 1 and beam identifier 1, and resource 2 corresponds to service identifier 2 and beam identifier 2, and the reporting configuration information configured by the network device may include: the mapping relation among the resource 1, the service identifier 1 and the beam identifier 1, and the mapping relation among the resource 2, the service identifier 2 and the beam identifier 2.

And S02, the network equipment sends the reporting configuration information.

After the network device determines the reported configuration information, the network device may send the reported configuration information. For example, the network device may send the reporting configuration information to at least one terminal device through a wireless network.

In some embodiments of the application, the sending, by the network device, the reporting configuration information includes:

the network equipment receives a multicast service request message sent by the terminal equipment;

and the network equipment sends the reporting configuration information to the terminal equipment according to the multicast service request message.

The terminal device may first send a multicast service request message to the network device, and the network device may receive the multicast service request message sent by the terminal device, so that the network device determines which terminal device requests the multicast service, and the network device may reply the report configuration information to the terminal device.

and the network equipment respectively sends the reporting configuration information through the wave beams in different directions.

In addition to sending the reporting configuration information based on the request of the terminal device, in the embodiment of the present application, the network device may also send the reporting configuration information in beams in different directions, so that the terminal devices in the coverage areas of the beams in different directions may all receive the reporting configuration information configured by the network device.

the network equipment sends a system broadcast message for indicating the reporting of the configuration information; or,

and the network equipment sends the reporting configuration information through a multicast service control channel.

Specifically, the network device may send a system broadcast message, and indicate the reporting configuration information through the system broadcast message, or the network device carries the reporting configuration information in a multicast service control channel. In this implementation scenario, the terminal device may acquire the reporting configuration information, for example, the terminal device may acquire the reporting configuration information from a system broadcast message, or read the reporting configuration information from a multicast service control channel. Further, before the terminal device reads the multicast service control channel, the method further includes sending a request to the network device, and requesting the network device to send the reporting configuration information.

S03, the terminal device obtains reporting configuration information sent by the network device, where the reporting configuration information is used to indicate a service identifier of a multicast service being transmitted, a beam identifier usable by the multicast service, and a mapping relationship between reporting resources, and the reporting resources are used to report the multicast service expected to be used by the terminal device and a corresponding beam identifier.

In the embodiment of the application, the network device sends the reporting configuration information, and the terminal device receives the reporting configuration information configured by the network device through the wireless network. The reporting configuration information is used to indicate a mapping relationship among a service identifier of a multicast service being transmitted, a beam identifier usable by the multicast service, and a reporting resource, so that the terminal device can determine the mapping relationship among the following three from the reporting configuration information: service identification of the multicast service being transmitted, beam identification usable by the multicast service, and reporting resources.

In some embodiments of the application, the acquiring, by the terminal device, the reporting configuration information sent by the network device includes:

the method comprises the steps that terminal equipment receives a system broadcast message which is sent by network equipment and used for indicating reporting of configuration information; or,

and the terminal equipment receives the reported configuration information sent by the network equipment through a multicast service control channel.

And S04, when the terminal equipment determines that the terminal equipment expects to receive the multicast service, the terminal equipment reports to the network equipment by using the reporting resource corresponding to the beam identifier.

In this embodiment of the present application, after receiving the reporting configuration information, the terminal device may determine which multicast services are being transmitted through the reporting configuration information, and determine, from the multicast services, a multicast service that the terminal device desires to receive, through a mapping relationship between the following three: the terminal device can determine the used reporting resource, and then the terminal device reports to the network device by using the reporting resource corresponding to the beam identifier, and the network device determines the multicast service expected to be received by the terminal device and the corresponding beam identifier by detecting the reporting resource. The network equipment can determine which beams have which terminal equipment to expect to receive which multicast services through the mapping relation between the reporting resources used by the terminal equipment and the beams and the multicast services, and then the network equipment can determine to send downlink beams according to the determined result information, so that the multicast services are sent without adopting a broadcasting mode, the multicast services are sent with pertinence, and the transmission efficiency of the multicast services is improved.

For example, as follows, the terminal device determines, by reporting the configuration information, that the network device configures two types of reporting resources, namely resource 1 and resource 2, where resource 1 corresponds to service identifier 1 and beam identifier 1, and resource 2 corresponds to service identifier 2 and beam identifier 2, and the reporting configuration information configured by the network device may include: the mapping relation among the resource 1, the service identifier 1 and the beam identifier 1, and the mapping relation among the resource 2, the service identifier 2 and the beam identifier 2. If the terminal device expects to receive the multicast service corresponding to the service identifier 2, the terminal device may use the resource 2, and if the terminal device expects to receive the multicast service corresponding to the service identifier 1, the terminal device may use the resource 1. In the embodiment of the application, the reporting resource used by the terminal device indicates the multicast service expected to be used by the terminal device and the corresponding beam identifier.

As can be seen from the foregoing description of the method executed by the network device in the embodiment, the terminal device reports to the network device using the reporting resource corresponding to the beam identifier, so that the multicast service expected to be received by the terminal device and the corresponding beam identifier can be determined by using the reporting resource used by the network device. Through the mapping relation between the reporting resources used by the terminal equipment and the wave beams and the multicast service, the network equipment can determine which wave beams have which terminal equipment expected to receive which multicast service, and then the network equipment can determine to send downlink wave beams according to the determined result information, so that the multicast service is sent without adopting a broadcasting mode, the multicast service is sent with pertinence, and the transmission efficiency of the multicast service is improved.

The foregoing embodiment describes a multicast transmission method provided in the embodiment of the present application from the perspective of a network device, and next describes the multicast transmission method provided in the embodiment of the present application from the perspective of a terminal device, please refer to fig. 3, where the embodiment of the present application provides a multicast transmission method, including:

301. the network equipment determines reporting configuration information, wherein the reporting configuration information is used for indicating a service identifier of a multicast service being transmitted, a beam identifier usable by the multicast service, and a mapping relation between reporting resources, and the reporting resources are used for reporting the multicast service expected to be used by the terminal equipment and the corresponding beam identifier.

In this embodiment, the network device may transmit the multicast service to the terminal device, and the network device needs to detect the multicast service that the terminal device expects to receive, so as to determine which multicast services need to be sent to which terminal devices. In order to enable the terminal device to report according to the requirement of the network device, the network device first determines reporting configuration information. The reporting configuration information indicates the mapping relationship among the following three: the method comprises the steps of service identification of the multicast service being transmitted, beam identification which can be used by the multicast service and reporting resources, wherein the service identification is used for identifying the specific multicast service, the beam identification is used for identifying the beam which can be used by the multicast service, the reporting resources are the resources which can be used by the terminal equipment for reporting to the network equipment, and the reporting resources are used for reporting the multicast service which the terminal equipment expects to use and the corresponding beam identification. The network device indicates the mapping relation among the service identifier, the beam identifier and the reporting resource through the reporting configuration information, and when the terminal device determines to use the reporting resource for reporting, the network device can determine the multicast service corresponding to the reporting resource and the corresponding beam identifier through the reporting configuration information.

302. And the network equipment sends the reporting configuration information.

In some embodiments of the present application, the multicast transmission method provided in the embodiments of the present application may further include the following steps:

the network equipment sends service control information, and the service control information comprises: and service identification of the multicast service.

The network device may send the service control information in addition to the reporting configuration information. The reporting configuration information may also be referred to as "beam reporting control information", and the service control information may also be referred to as "multicast service control information". The reporting configuration information and the service control information may be sent in the same information, or may be sent separately by using two separate pieces of information, and specifically, the sending of the service control information and the reporting configuration information may be determined by combining an application scenario.

The service control information sent by the network device may include a service identifier of the multicast service being transmitted, so that the terminal device receiving the service control information may determine which multicast service is being transmitted, and further, the terminal device may determine which multicast service or services is/are expected to be received.

In some embodiments of the present application, the service control information further includes configuration information of service transmission resources of the multicast service, and the service transmission resources include at least one of the following resources: radio Network Temporary Identity (RNTI) corresponding to the multicast service, time information corresponding to the multicast service, and physical control channel resources corresponding to the multicast service.

The service transmission resource is a transmission resource used by the network device to send the multicast service, and through the configuration information of the service transmission resource, the terminal device can determine the transmission resource used by the network device to send the multicast service, and the terminal device can receive the multicast service sent by the network device by using the service transmission resource.

For example, the service control information includes service information of a multicast service being transmitted, and optionally, configuration information of a service transmission resource of the multicast service, where the service transmission resource includes at least one of the following resources, for example, an RNTI corresponding to the multicast service, and time information of multicast service transmission, where the time information includes a period parameter and an offset parameter. Control resource configuration information (core) of the PDCCH corresponding to the service transmission, such as a time domain or a frequency domain position of the PDCCH.

In some embodiments of the present application, after the network device sends the reporting configuration information in step 302, the multicast transmission method provided in this embodiment of the present application further includes:

and the network equipment detects the reported resources, and determines the multicast service expected to be received by the terminal equipment and the beam identifier usable by the terminal equipment according to the detection result.

The reporting configuration information sent by the network device to the terminal device indicates a mapping relationship between the following three: service identification of the multicast service being transmitted, beam identification usable by the multicast service, and reporting resources. The terminal device reports the report resource, the network device can also detect the report resource, and the network device can determine the multicast service expected to be received by the terminal device and the beam identifier used by the terminal device according to the mapping relation through the report resource detected by the network device. Through the mapping relation between the reporting resources used by the terminal equipment and the beam and the multicast service, the network equipment can determine which beams have which terminal equipment expects to receive which multicast service, and then the network equipment can determine to send downlink beams according to the determined result information.

Further, in some embodiments of the present application, after determining, according to the detection result, the multicast service that the terminal device expects to receive and the beam identifier that the terminal device can use, the multicast transmission method provided in the embodiments of the present application further includes:

and the network equipment schedules the multicast service which is expected to be received by the terminal equipment on the beam corresponding to the beam identifier which can be used by the terminal equipment.

After the network device determines the multicast service and the beam identifier that the terminal device expects to receive through detecting the reported resource, the network device schedules the multicast service that the terminal device expects to receive on the beam corresponding to the beam identifier that the terminal device can use, so that the network device sends the multicast service in the embodiment of the application is performed for the terminal device that expects to receive the multicast service, and does not need to broadcast for all the terminal devices, thereby improving the transmission efficiency of the multicast service.

In some embodiments of the present application, the network device may determine, in the reporting configuration information, that there are multiple beam identifiers usable for the multicast service, where the multiple beam identifiers respectively correspond to beams forming a beam set, where the beam set includes at least two beam identifiers, and the reporting configuration information is used to indicate a mapping relationship between the service identifier, the beam set, and the reporting resource of the multicast service. In this implementation scenario, the reporting resource determined by the network device may include: uplink resources dedicated to the terminal device. That is, the uplink resource is dedicated for reporting by the terminal device. In this implementation scenario, the detecting and reporting resources by the network device includes:

the network device detects a measurement result for at least one beam in the beam set reported by the terminal device on the dedicated uplink resource.

When the reporting configuration information determined by the network device indicates a mapping relationship among the service identifier, the beam set and the reporting resource, the terminal device measures the beams in the beam set and generates a measurement result of at least one beam, the terminal device determines whether to expect to receive the multicast service on at least one beam, and when the terminal device expects to receive a certain multicast service, the terminal device can use the dedicated uplink resource allocated by the network device to report. Therefore, in a scenario where the network device allocates the dedicated uplink resource, the network device detects, on the dedicated uplink resource, a measurement result for at least one beam in the beam set, which is reported by the terminal device, so that the network device can determine the beam used by the terminal device. For example, the network device determines the beam with the measurement result greater than the measurement threshold as the beam used by the terminal device.

In some embodiments of the present application, reporting the configuration information further includes: and the terminal equipment reports the used lead code and the time-frequency resource.

The network equipment detects and reports resources, and the method comprises the following steps:

and the network equipment detects the lead code sent by the terminal equipment on the time-frequency resource.

The network device may indicate, to the terminal device, a usable preamble and a time-frequency resource corresponding to the preamble. And the terminal equipment determines the usable lead code and the time-frequency resource through the reported configuration information. The terminal device may send the preamble to the network device on the time-frequency resource corresponding to the beam identifier. The reporting configuration information comprises a lead code used for reporting and a time-frequency resource corresponding to the lead code, and the terminal equipment uses the time-frequency resource to send the lead code to indicate that the terminal equipment expects to receive the multicast service on a beam corresponding to the beam identifier. The network device detects the lead code sent by the terminal device on the time-frequency resource, so that the network device determines the beam identifier used by the terminal device and the multicast service expected to be received by the terminal device through the detected lead code.

In some embodiments of the present application, reporting the configuration information further includes: and the terminal equipment reports the adopted first period periodically.

The reporting configuration information determined by the network device further includes reporting period information, where the reporting period is a first period, and the terminal device may perform periodic reporting according to the first period, so that the network device may receive, according to the first period, a report that the terminal device uses a reporting resource.

As can be seen from the foregoing illustration of the method executed by the network device in the embodiment, after determining the reporting configuration information, the network device sends the reporting configuration information to the terminal device, and the terminal device reports the reporting resource corresponding to the beam identifier to the network device, so that the multicast service expected to be received by the terminal device and the corresponding beam identifier can be determined by using the reporting resource used by the network device. Through the mapping relation between the reporting resources used by the terminal equipment and the wave beams and the multicast service, the network equipment can determine which wave beams have which terminal equipment expected to receive which multicast service, and then the network equipment can determine to send downlink wave beams according to the determined result information, so that the multicast service is sent without adopting a broadcasting mode, the multicast service is sent with pertinence, and the transmission efficiency of the multicast service is improved.

The foregoing embodiment describes a multicast transmission method provided in this embodiment from the perspective of a network device, and next introduces another multicast transmission method executed by a terminal device, please refer to fig. 4, where this embodiment provides a multicast transmission method, including:

401. the terminal equipment acquires reporting configuration information sent by the network equipment, wherein the reporting configuration information is used for indicating a service identifier of a multicast service being transmitted, a beam identifier usable by the multicast service and a mapping relation between reporting resources, and the reporting resources are used for reporting the multicast service expected to be used by the terminal equipment and the corresponding beam identifier.

402. And when the terminal equipment determines that the multicast service is expected to be received, the terminal equipment reports the multicast service to the network equipment by using the reporting resource corresponding to the beam identifier.

the terminal equipment acquires service control information sent by the network equipment, wherein the service control information comprises: and the service identification of the multicast service being transmitted.

The terminal equipment can receive the service control information besides the reporting configuration information. The reporting configuration information may also be referred to as "beam reporting control information", and the service control information may also be referred to as "multicast service control information". If the reporting configuration information is sent and the service control information is sent in the same information, the terminal device may receive the service control information and the reporting configuration information through one information. If the reporting configuration information and the service control information are separately sent by using two independent pieces of information, the terminal device may receive the service control information and the reporting configuration information sent by the network device, respectively.

The service control information received by the terminal device may include a service identifier of the multicast service being transmitted, so that the terminal device may determine which multicast service is being transmitted, and further, the terminal device may determine which multicast service or services is/are expected to be received.

In some embodiments of the present application, the traffic control information further includes configuration information of traffic transmission resources of the multicast traffic. The traffic transmission resources include at least one of the following: a Radio Network Temporary Identifier (RNTI) corresponding to the multicast service, time information corresponding to the multicast service and a physical control channel corresponding to the multicast service;

the multicast transmission method provided by the embodiment of the present application may further include:

the terminal equipment receives the multicast service sent by the network equipment by using the service transmission resource.

In some embodiments of the present application, the network device may determine, in the reporting configuration information, that there are multiple beam identifiers usable for the multicast service, where the multiple beam identifiers respectively correspond to beams forming a beam set, where the beam set includes at least two beam identifiers, and the reporting configuration information is used to indicate a mapping relationship between the service identifier, the beam set, and the reporting resource of the multicast service. In this implementation scenario, the reporting resource determined by the terminal device through the reporting configuration information may include: uplink resources dedicated to the terminal device. That is, the uplink resource is dedicated for reporting by the terminal device. In this implementation scenario, the multicast transmission method provided in the embodiment of the present application further includes the following steps:

when the reporting configuration information is used for indicating the mapping relation among the service identifier, the beam set and the reporting resource of the multicast service, the terminal equipment measures the beams in the beam set and generates a measurement result of at least one beam;

the terminal device determines whether multicast traffic is desired to be received on at least one beam.

When the reporting configuration information determined by the terminal device indicates a mapping relationship among the service identifier, the beam set, and the reporting resource, the terminal device measures the beams in the beam set and generates a measurement result of at least one beam, and the terminal device determines whether to expect to receive the multicast service on the at least one beam, for example, the terminal device determines that the beam of which the measurement result is greater than the measurement threshold is the beam used by the terminal device.

In some embodiments of the present application, reporting resources includes: uplink resources dedicated to the terminal device. The method for reporting the report resource corresponding to the beam identifier to the network equipment by the terminal equipment comprises the following steps:

and the terminal equipment sends the report information used for indicating the measurement result of at least one beam to the network equipment by using the uplink resource special for the terminal equipment.

When the terminal device expects to receive a certain multicast service, the terminal device may use a dedicated uplink resource allocated by the network device to report. Therefore, in a scenario where the network device allocates the dedicated uplink resource, the terminal device reports a measurement result for at least one beam in the beam set, so that the network device can determine the beam used by the terminal device. For example, the network device determines the beam with the measurement result greater than the measurement threshold as the beam used by the terminal device.

It should be noted that, in this embodiment of the present application, reporting the configuration information includes a beam set, where a terminal device reports a measurement result for at least one beam in a wave velocity set based on the beam set, so that a network device determines a downlink beam used by the terminal device.

In some embodiments of the present application, reporting the configuration information includes: the method comprises the steps that a lead code and time frequency resources are adopted, and the terminal equipment reports to network equipment by using reporting resources corresponding to beam identifiers, and comprises the following steps:

and the terminal equipment sends the lead code to the network equipment on the time-frequency resource corresponding to the beam identifier.

In some embodiments of the present application, reporting, by a terminal device, to a network device using a reporting resource corresponding to a beam identifier includes:

the terminal device reports to the network device periodically in a first period, where the first period is a predefined period or a period obtained from reporting configuration information.

The reporting configuration information determined by the network device further includes reporting period information, where the reporting period is a first period, and if the terminal device locally pre-configures the first period, the terminal device may perform periodic reporting according to the first period, so that the network device may receive, according to the first period, a report that the terminal device uses the reporting resource.

and when the terminal equipment determines that the multicast service is stopped according to the service control information, the terminal equipment stops using the reporting resource for reporting.

When the terminal device is not interested in continuously receiving a certain multicast service, the terminal device stops using the reporting resource for reporting, the network device cannot detect the reporting resource used by the terminal device any more, the network device determines that the terminal device does not expect to receive the multicast service any more, and the network device can stop sending the multicast service to the terminal device, so that transmission resources are saved, and multicast transmission efficiency is improved.

In order to better understand and implement the above-described scheme of the embodiments of the present application, the following description specifically illustrates a corresponding application scenario.

In the prior art, the same service data is repeatedly transmitted on each beam, which results in resource waste, because there is not necessarily UE receiving multicast service on each beam.

In order to solve the problem, in the embodiment of the present application, the network device configures the reporting configuration information first, so that by detecting the reporting resource of the terminal device, which beams have which terminal devices are expected to receive which multicast services can be determined, and then the network device can determine the sending beams according to the determined result information, so that the multicast service information is sent on the beams received by the terminal devices.

As shown in fig. 5, the communication system architecture provided in the embodiment of the present application mainly includes: network device 40 and terminal device 50. Wherein,

the network device 40 is an access network device, which may be a base station, for example. The network device 40 and the terminal device 50 are connected to receive the UE data and send the UE data to the core network device. The access network device corresponds to different devices in different systems, such as a base station and a base station controller in a 2G system, a base station and an RNC in a 3G system, an eNB in a 4G system, and an access network device in a 5G system.

The terminal device 50 reports the association between the service and its beam (beam), and the terminal device 50 may be a user device, which includes a wireless transceiving function and can cooperate with a network device to provide a communication service for a user.

As shown in fig. 6, an interaction procedure between a network device and a terminal device is schematically described next, and in the following embodiments, an example description is performed with the terminal device as a UE, and the following procedure is mainly included:

s11, the network device sends the multicast service control information to the UE, and the UE beam reports the control information.

Wherein, the multicast service control information includes service information of a multicast service being transmitted, and optionally also includes multicast service transmission resource information, and the transmission resource includes at least one of the following: an RNTI corresponding to the service; time information of the service transmission, wherein the time information comprises a period parameter and a bias parameter; the service transmits resource information of a corresponding PDCCH, such as a time domain or a frequency domain position of the PDCCH.

S12, receiving the multicast service control information, and reporting the control information by the beam.

The UE acquiring the Multicast service Control information may include acquiring from a system broadcast message or reading from a Multicast service Control Channel (MCCH). Specifically, the configuration information of the MCCH channel is sent in a system broadcast, and the MCCH configuration information includes PDCCH resource information (for example, a time domain or a frequency domain position of a PDCCH) used for scheduling the MCCH.

For example, for SC-PTM transmission, a base station may configure a DCI Format as DCI Format 1A, where DCI Format 1A is used for Resource Block (RB) allocation, and two logical channels, a Single cell MBMS point-to-multipoint control channel (SC-MCCH) and a Single cell MBMS traffic channel (SC-MTCH), are introduced in SC-PTM, as shown in fig. 7, a schematic diagram of an SC-MTCH provided in this embodiment for transmitting a service is shown. The SC-MCCH is used for transmitting control information, including configuration information of the SC-MTCH, such as a Group-radio network temporary identifier (G-RNTI) and a Discontinuous Reception (DRX) parameter corresponding to the SC-MTCH. The SC-MCCH (abbreviated as MCCH in the figure) is transmitted in a periodic manner. The SC-MTCH is used for transmitting services, and each service corresponds to an SC-MTCH channel. The SC-MTCH may be continuously transmitted, such as service 3, or may be configured with discontinuous transmission, such as service 1 and service 2.

Further, before the UE reads the multicast service control information, the UE further sends a request to a network device to request the network device to send the multicast service control information.

In some embodiments of the present application, the beam reporting control information includes a beam set, and the UE reports a measurement result for at least one beam in the wave velocity set based on the beam set. So that the network device determines the downlink beam used by the UE.

Wherein, the beam reporting control information includes the following mode one: the beam reporting control information comprises a beam set, and the UE reports a measurement result aiming at least one beam in the wave velocity set based on the beam set. So that the network device determines the downlink beam used by the UE. And the UE also reports the interested multicast service identification of the UE, and the interested service table of the UE reports the changed interested multicast service identification.

Optionally, the reporting of the control information by the beam includes the following second mode: the beam reporting control information comprises a multicast service identifier, a beam identifier and beam reporting control information corresponding to the beam identifier, and if the UE expects to receive the multicast service in a beam corresponding to the beam identifier, the UE uses a reporting resource indicated by the beam reporting control information to report. Specifically, the reporting of the control information by the beam includes: and reporting the used lead code and the time frequency resource corresponding to the lead code. And the UE transmits a preamble by using the resource, and the preamble indicates that the UE expects to receive the multicast service in the beam corresponding to the beam identification.

Optionally, the beam reporting control information further includes reporting period information, and the UE reports according to the period.

Specifically, after reading the multicast service control information, the UE determines that it wants to receive at least one of the services, and reports the multicast service control information according to the beam reporting control information corresponding to the service. Optionally, the UE sends the preamble (i.e., preamble sequence) at a certain period after starting reporting. And the lead code corresponds to a time frequency resource and is determined according to the downlink wave beam where the lead code is located and the expected received service. The period is a fixed period or determined according to a period in the control information reported by the beam.

Optionally, after the UE is not interested in continuing to receive the service, the UE stops reporting by using the reporting resource.

Optionally, when the UE determines from the multicast service control information that the multicast service has stopped, the UE stops reporting by using the reporting resource.

Optionally, after the first mode is stopped, the UE performs reporting of the second mode. In a first manner, uplink resources dedicated to the current UE need to be adopted for the UE to report the beam measurement result, so that the network device determines that the measurement result is for the current UE, and can determine, according to services reported by the UE, which downlink beams these services are transmitted from. Since the UE dedicated uplink resources are needed for the first reporting mode. When there are more users in the cell, reporting may be performed in a second mode, in which all UEs use the same resource (preamble and corresponding time-frequency resource) for the same downlink beam and the same interested service pair, thereby saving the overhead of uplink. However, when there are fewer users, the corresponding resources need to be reserved, so that the method is suitable for being used when there are more users.

And S13, the terminal equipment reports to the network equipment by using the reporting resource corresponding to the beam identifier.

When the terminal equipment expects to receive the multicast service, the terminal equipment uses the reporting resource to report.

And S14, the network detects the report information of the terminal equipment according to the beam report control information.

And the network equipment detects the reporting information of the UE according to the beam reporting control information.

For example, in the first mode, uplink resources dedicated to the current UE need to be adopted for the UE to report the beam measurement result, so that the network device determines that the measurement result is for the current UE, and the network device can further determine, according to the service information reported by the UE, which downlink beams these services are transmitted from.

In the second mode, the network device detects whether the UE sends the preamble according to the preamble corresponding to the beam reporting control information and the time-frequency resource thereof, and determines the multicast service represented by the preamble and the beam identifier thereof according to the beam reporting control information.

And S15, the network equipment schedules the multicast service on the beam corresponding to the beam identification which can be used by the terminal equipment.

The network equipment determines which beams have UE expecting to receive which multicast services according to the collected beam identifiers and the corresponding information of the multicast services, and the network equipment schedules the corresponding multicast services on the corresponding downlink beams.

S16, the terminal device uses the service transmission resource to receive the multicast service sent by the network device

And the UE receives the multicast service according to the resource designated by the multicast service control information.

Specifically, if the multicast service control information includes an RNTI corresponding to the multicast service, the UE receives the multicast service according to the RNTI.

And if the multicast service control information contains time information corresponding to the multicast service, the UE receives the multicast service according to the time information.

In the embodiment of the application, the network determines which beams have which users expect to receive which services through the beams reported by the UE and the corresponding relation information of the services, and then determines to send the downlink beams according to the information.

It should be noted that, for simplicity of description, the above-mentioned method embodiments are described as a series of acts or combination of acts, but those skilled in the art will recognize that the present application is not limited by the order of acts described, as some steps may occur in other orders or concurrently depending on the application. Further, those skilled in the art should also appreciate that the embodiments described in the specification are preferred embodiments and that the acts and modules referred to are not necessarily required in this application.

To facilitate better implementation of the above-described aspects of the embodiments of the present application, the following also provides relevant means for implementing the above-described aspects.

An embodiment of the present application further provides a network device, which executes the method executed by the network device in fig. 2, fig. 3, and fig. 6, and as shown in fig. 8, the network device 800 includes:

a processing module 801, configured to determine reporting configuration information, where the reporting configuration information is used to indicate a service identifier of a multicast service being transmitted, a beam identifier usable by the multicast service, and a mapping relationship between reporting resources, where the reporting resources are used to report the multicast service that a terminal device desires to use and a corresponding beam identifier;

a sending module 802, configured to send the reporting configuration information.

In some embodiments of the present application, the sending module 802 is further configured to send traffic control information, where the traffic control information includes: and the service identifier of the multicast service.

In some embodiments of the present application, the service control information further includes configuration information of service transmission resources of the multicast service, where the service transmission resources include at least one of the following resources: the radio network temporary identifier RNTI corresponding to the multicast service, the time information corresponding to the multicast service and the physical control channel resource corresponding to the multicast service.

In some embodiments of the present application, as illustrated in fig. 8, the communication device 800 further includes: a receiving module 803, wherein,

the processing module 801 is further configured to control the receiving module 803 to detect the reported resource, and determine, according to a detection result, a multicast service that the terminal device desires to receive and a beam identifier that the terminal device can use.

In some embodiments of the present application, the processing module 801 is further configured to, after determining, according to the detection result, the multicast service that the terminal device desires to receive and the beam identifier that the terminal device can use, control the sending module 802 to schedule the multicast service that the terminal device desires to receive on a beam corresponding to the beam identifier that the terminal device can use.

In some embodiments of the present application, when the reporting configuration information is used to indicate a mapping relationship between a service identifier of a multicast service, a beam set, and a reporting resource, the reporting resource includes: uplink resources dedicated to the terminal device;

the processing module 801 is further configured to control the receiving module 803 to detect, on the dedicated uplink resource, a measurement result for at least one beam in the beam set, where the measurement result is reported by the terminal device.

In some embodiments of the present application, the reporting the configuration information further includes: the terminal equipment reports the used lead code and time-frequency resource;

the processing module 801 is further configured to control the receiving module 803 to detect the preamble sent by the terminal device on the time-frequency resource.

In some embodiments of the present application, the reporting the configuration information further includes: and the terminal equipment reports the adopted first period periodically.

It should be noted that, because the contents of information interaction, execution process, and the like between the modules/units of the apparatus are based on the same concept as the method embodiment of the present application, the technical effect brought by the contents is the same as the method embodiment of the present application, and specific contents may refer to the description in the foregoing method embodiment of the present application, and are not described herein again.

The network device in this embodiment may refer to the device shown in fig. 9, which includes a processor 901, an application processor, a memory user interface, and other elements (including a power supply and other devices not shown). In fig. 9, the processing unit may be the processor 901, and performs corresponding functions. The sending unit and/or the receiving unit may be a wireless transceiver 903 in the figure, which performs corresponding functions through an antenna. It will be understood that the various elements shown in the figures are illustrative only and are not required to complete the present embodiment.

The network device in this embodiment may refer to the device shown in fig. 10. As an example, the device may perform functions similar to the processor of FIG. 9. In fig. 10, the apparatus includes a processor, a transmission data processor, and a processor. In fig. 10, the processing unit may be the processor 1001 and performs corresponding functions. The transmitting unit may be the transmitting data processor 1003 in fig. 10, and the receiving unit may be the receiving data processor 1005 in fig. 10. Although a channel encoder and a channel decoder are shown in the figure, it should be understood that these blocks are not limitative to the present embodiment, but only illustrative.

Fig. 11 shows another form of the present embodiment. The processing device 1100 includes modules such as a modulation subsystem, a central processing subsystem, and peripheral subsystems. The network device in this embodiment may serve as a modulation subsystem therein. In particular, the modulation subsystem may include a processor 1103 and an interface 1104. The processor 1103 performs the functions of the processing unit, and the interface 1104 performs the functions of the sending unit and/or the receiving unit. As another variation, the modulation subsystem includes a memory 1106, a processor 1103, and a program stored on the memory and executable on the processor, wherein the processor implements the method of embodiment fig. 3 when executing the program. It should be noted that the memory 1106 may be non-volatile or volatile, and may be located within the modulation subsystem or within the processing device 1100, as long as the memory 1106 is connected to the processor 1103.

As another form of the present embodiment, there is provided a computer-readable storage medium having stored thereon instructions that, when executed, perform the method performed by a network device.

An embodiment of the present application further provides a terminal device, which executes the method executed by the terminal device in fig. 2, 4, and 6, please refer to fig. 12, where the terminal device 1200 includes:

a processing module 1201, configured to acquire reporting configuration information sent by a network device, where the reporting configuration information is used to indicate a service identifier of a multicast service being transmitted, a beam identifier usable by the multicast service, and a mapping relationship between reporting resources, and the reporting resources are used to report the multicast service expected to be used by a communication device and a corresponding beam identifier;

a sending module 1202, configured to report to the network device by using the reporting resource corresponding to the beam identifier when the communication device determines that it is expected to receive the multicast service.

In some embodiments of the present application, the processing module 1201 is further configured to acquire service control information sent by the network device, where the service control information includes: and the service identification of the multicast service being transmitted.

In some embodiments of the present application, the traffic control information further includes configuration information of traffic transmission resources of the multicast traffic,

the service transmission resource comprises at least one of the following resources: a Radio Network Temporary Identifier (RNTI) corresponding to the multicast service, time information corresponding to the multicast service and a physical control channel corresponding to the multicast service;

as shown in fig. 12, the communication apparatus further includes: a receiving module 1203, configured to receive the multicast service sent by the network device by using the service transmission resource.

In some embodiments of the present application, the processing module 1201 is further configured to measure a beam in the beam set and generate a measurement result of at least one beam when the reporting configuration information is used to indicate a mapping relationship between a service identifier of a multicast service, the beam set, and a reporting resource; determining whether reception of the multicast traffic is desired on the at least one beam.

In some embodiments of the present application, the reporting resource includes: an uplink resource dedicated to the communication device;

the sending module 1202 is further configured to send, to the network device, report information indicating the measurement result of the at least one beam by using the uplink resource dedicated to the communication device.

In some embodiments of the present application, the reporting the configuration information includes: a preamble and a time-frequency resource,

the sending module 1202 is further configured to send the preamble to the network device on a time-frequency resource corresponding to the beam identifier.

In some embodiments of the present application, the sending module 1202 is further configured to perform periodic reporting to the network device with a first period, where the first period is a predefined period or a period obtained from the reporting configuration information.

The terminal device in this embodiment may refer to the device shown in fig. 13, and the device includes a processor 1301, an application processor, a memory user interface, and other elements (including a power supply and other devices not shown). In fig. 13, the processing unit may be the processor 1301 and performs corresponding functions. The sending unit and/or the receiving unit may be a wireless transceiver 1303 in the figure, and the wireless transceiver performs corresponding functions through an antenna. It will be understood that the various elements shown in the figures are illustrative only and are not required to complete the present embodiment.

The terminal device in this embodiment may refer to the device shown in fig. 14. As an example, the device may perform a function similar to the processor of FIG. 13. In fig. 14, the apparatus includes a processor, a transmission data processor, a processor. In fig. 14, the processing unit may be the processor 1401 and performs corresponding functions. The transceiving unit may include: a transmitting unit which may be the transmission data processor 1403 in fig. 14, and a receiving unit which may be the reception data processor 1405 in fig. 14. Although a channel encoder and a channel decoder are shown in the figure, it should be understood that these blocks are not limitative to the present embodiment, but only illustrative.

Fig. 15 shows another form of the present embodiment. The processing device 1500 includes modules such as a modulation subsystem, a central processing subsystem, and peripheral subsystems. The terminal device in this embodiment may serve as a modulation subsystem therein. In particular, the modulation subsystem may include a processor 1503 and an interface 1504. The processor 1503 performs the functions of the processing unit, and the interface 1504 performs the functions of the sending unit and/or the receiving unit. As another variation, the modulation subsystem includes a memory 1506, a processor 1503 and a program stored on the memory and executable on the processor, which when executed by the processor implements the method performed by the terminal device. It should be noted that the memory 1506 may be non-volatile or volatile, and may be located within the modulation subsystem or within the processing device 1500, as long as the memory 1506 is connected to the processor 1503.

In another possible design, when the apparatus is a chip within a device, the chip includes: a processing unit, which may be for example a processor, and a communication unit, which may be for example an input/output interface, a pin or a circuit, etc. The processing unit may execute computer-executable instructions stored by the storage unit to cause a chip within the device to perform the wireless communication method of any of the first aspects described above. Optionally, the storage unit is a storage unit in the chip, such as a register, a cache, and the like, and the storage unit may also be a storage unit located outside the chip in the device, such as a read-only memory (ROM) or another type of static storage device that can store static information and instructions, a Random Access Memory (RAM), and the like.

The processor mentioned in any of the above may be a general-purpose Central Processing Unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more integrated circuits for controlling execution of a program of the wireless communication method according to the first aspect.

It should be noted that the above-described embodiments of the apparatus are merely schematic, where the units described as separate parts may or may not be physically separate, and the parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. In addition, in the drawings of the embodiments of the apparatus provided in the present application, the connection relationship between the modules indicates that there is a communication connection therebetween, and may be implemented as one or more communication buses or signal lines.

Through the above description of the embodiments, those skilled in the art will clearly understand that the present application can be implemented by software plus necessary general-purpose hardware, and certainly can also be implemented by special-purpose hardware including special-purpose integrated circuits, special-purpose CPUs, special-purpose memories, special-purpose components and the like. Generally, functions performed by computer programs can be easily implemented by corresponding hardware, and specific hardware structures for implementing the same functions may be various, such as analog circuits, digital circuits, or dedicated circuits. However, for the present application, the implementation of a software program is more preferable. Based on such understanding, the technical solutions of the present application may be embodied in the form of a software product, which is stored in a readable storage medium, such as a floppy disk, a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk of a computer, and includes instructions for enabling a computer device (which may be a personal computer, a server, or a network device) to execute the methods described in the embodiments of the present application.

In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product.

The computer program product includes one or more computer instructions. When loaded and executed on a computer, cause the processes or functions described in accordance with the embodiments of the application to occur, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, from one website site, computer, server, or data center to another website site, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that a computer can store or a data storage device, such as a server, a data center, etc., that is integrated with one or more available media. The usable medium may be a magnetic medium (e.g., floppy Disk, hard Disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., Solid State Disk (SSD)), among others.

Claims

1. A method of multicast transmission, comprising:

the method comprises the steps that equipment determines reporting configuration information, wherein the reporting configuration information is used for indicating a service identifier of a multicast service being transmitted, a beam identifier which can be used by the multicast service and a mapping relation between reporting resources, and the reporting resources are used for reporting the multicast service expected to be used by terminal equipment and the corresponding beam identifier;

and the equipment sends the reporting configuration information.

2. The method of claim 1, further comprising:

the device sends service control information, which includes: and the service identifier of the multicast service.

3. The method of claim 2, wherein the traffic control information further comprises configuration information of traffic transmission resources of the multicast traffic, and wherein the traffic transmission resources comprise at least one of the following resources: the radio network temporary identifier RNTI corresponding to the multicast service, the time information corresponding to the multicast service and the physical control channel resource corresponding to the multicast service.

4. The method according to any one of claims 1 to 3, wherein after the device sends the reporting configuration information, the method further comprises:

and the equipment detects the reported resource, and determines the multicast service expected to be received by the terminal equipment and the beam identifier which can be used by the terminal equipment according to the detection result.

5. The method according to claim 4, wherein after determining the multicast service that the terminal device desires to receive and the beam identifiers that the terminal device can use according to the detection result, the method further comprises:

and the equipment schedules the multicast service which is expected to be received by the terminal equipment on the beam corresponding to the beam identifier which can be used by the terminal equipment.

6. The method according to any one of claims 4 to 5, wherein when the reporting configuration information is used to indicate a mapping relationship among a service identifier, a beam set, and reporting resources of a multicast service, the reporting resources include: uplink resources dedicated to the terminal device;

the device detecting the reported resource includes:

and the equipment detects a measurement result aiming at least one beam in the beam set, which is reported by the terminal equipment, on the special uplink resource.

7. The method according to any one of claims 4 to 6, wherein the reporting the configuration information further comprises: the terminal equipment reports the used lead code and time-frequency resource;

the device detecting the reported resource includes:

and the equipment detects the lead code sent by the terminal equipment on the time-frequency resource.

8. The method according to any one of claims 1 to 7, wherein reporting the configuration information further comprises: and the terminal equipment reports the adopted first period periodically.

9. A method of multicast transmission, comprising:

the method comprises the steps that equipment acquires reporting configuration information sent by network equipment, wherein the reporting configuration information is used for indicating a service identifier of a multicast service being transmitted, a beam identifier which can be used by the multicast service and a mapping relation between reporting resources, and the reporting resources are used for reporting the multicast service expected to be used by the equipment and the corresponding beam identifier;

and when the equipment determines that the multicast service is expected to be received, the equipment reports the multicast service to the network equipment by using the reporting resource corresponding to the beam identifier.

10. The method of claim 9, further comprising:

the device acquires service control information sent by the network device, wherein the service control information comprises: and the service identification of the multicast service being transmitted.

11. The method of claim 10, wherein the traffic control information further comprises configuration information of traffic transmission resources of the multicast traffic,

the method further comprises the following steps:

and the equipment receives the multicast service sent by the network equipment by using the service transmission resource.

12. The method according to any one of claims 9 to 11, further comprising:

when the reporting configuration information is used for indicating a mapping relation among a service identifier, a beam set and reporting resources of a multicast service, the device measures beams in the beam set and generates a measurement result of at least one beam;

the apparatus determines whether reception of the multicast traffic is desired on the at least one beam.

13. The method of claim 12, wherein reporting the resources comprises: an uplink resource dedicated to the device;

the reporting resource corresponding to the beam identifier is used by the device to report to the network device, and the reporting resource comprises:

and the equipment sends reporting information used for indicating the measurement result of the at least one beam to the network equipment by using the uplink resource special for the equipment.

14. The method according to any of claims 9 to 13, wherein reporting the configuration information comprises: a preamble and a time-frequency resource,

and the equipment sends the lead code to the network equipment on the time-frequency resource corresponding to the beam identification.

15. The method according to any of claims 9 to 14, wherein the reporting resource corresponding to the beam identifier is used by the device for reporting to the network device, and the method comprises:

the device reports to the network device periodically with a first period, where the first period is a predefined period or a period obtained from the reporting configuration information.

16. A communication device, comprising:

a processing module, configured to determine reporting configuration information, where the reporting configuration information is used to indicate a service identifier of a multicast service being transmitted, a beam identifier usable by the multicast service, and a mapping relationship between reporting resources, where the reporting resources are used to report the multicast service expected to be used by a terminal device and a corresponding beam identifier;

and the sending module is used for sending the reporting configuration information.

17. The communications device of claim 16, wherein the sending module is further configured to send traffic control information, and the traffic control information includes: and the service identifier of the multicast service.

18. The communication device of claim 17, wherein the traffic control information further comprises configuration information of traffic transmission resources of the multicast traffic, and wherein the traffic transmission resources comprise at least one of the following resources: the radio network temporary identifier RNTI corresponding to the multicast service, the time information corresponding to the multicast service and the physical control channel resource corresponding to the multicast service.

19. The communication device according to any one of claims 16 to 18, characterized in that the communication device further comprises: a receiving module for receiving, wherein,

the processing module is further configured to control the receiving module to detect the reported resource, and determine, according to a detection result, a multicast service that the terminal device desires to receive and a beam identifier that the terminal device can use.

20. The communications device according to claim 19, wherein the processing module is further configured to control the transmitting module to schedule the multicast service that the terminal device desires to receive on a beam corresponding to the beam identifier that the terminal device can use, after determining the multicast service that the terminal device desires to receive and the beam identifier that the terminal device can use according to the detection result.

21. The communications device according to any one of claims 19 to 20, wherein when the reporting configuration information is used to indicate a mapping relationship between a service identifier, a beam set, and a reporting resource of a multicast service, the reporting resource includes: uplink resources dedicated to the terminal device;

22. The communications device of any one of claims 19 to 21, wherein the reporting configuration information further comprises: the terminal equipment reports the used lead code and time-frequency resource;

the processing module is further configured to control the receiving module to detect the preamble sent by the terminal device on the time-frequency resource.

23. The communications device of any one of claims 16 to 22, wherein the reporting configuration information further comprises: and the terminal equipment reports the adopted first period periodically.

24. A communication device, comprising:

a processing module, configured to acquire reporting configuration information sent by a network device, where the reporting configuration information is used to indicate a service identifier of a multicast service being transmitted, a beam identifier usable by the multicast service, and a mapping relationship between reporting resources, where the reporting resources are used to report the multicast service expected to be used by a communication device and a corresponding beam identifier;

and a sending module, configured to report, when the communication device determines that it is expected to receive the multicast service, to the network device using the reporting resource corresponding to the beam identifier.

25. The communications device of claim 24, wherein the processing module is further configured to obtain service control information sent by the network device, and the service control information includes: and the service identification of the multicast service being transmitted.

26. The communication device of claim 25, wherein the traffic control information further comprises configuration information of traffic transmission resources of the multicast traffic,

the communication device further includes: and the receiving module is used for receiving the multicast service sent by the network equipment by using the service transmission resource.

27. The communications device according to any one of claims 24 to 26, wherein the processing module is further configured to measure beams in the beam set and generate a measurement result of at least one beam when the reporting configuration information is used to indicate a mapping relationship between a service identifier, a beam set, and reporting resources of a multicast service; determining whether reception of the multicast traffic is desired on the at least one beam.

28. The communications device of claim 27, wherein the reporting resources comprise: an uplink resource dedicated to the communication device;

the sending module is further configured to send, to the network device, report information indicating a measurement result of the at least one beam by using the uplink resource dedicated to the communication device.

29. The communications device of any one of claims 24 to 28, wherein the reporting configuration information comprises: a preamble and a time-frequency resource,

the sending module is further configured to send the preamble to the network device on a time-frequency resource corresponding to the beam identifier.

30. The communications device according to any one of claims 24 to 29, wherein the sending module is further configured to perform periodic reporting to the network device with a first period, where the first period is a predefined period or a period obtained from the reporting configuration information.