CN112087720B

CN112087720B - Communication method and device

Info

Publication number: CN112087720B
Application number: CN201910507152.3A
Authority: CN
Inventors: 官磊; 李秉肇
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2019-06-12
Filing date: 2019-06-12
Publication date: 2023-10-24
Anticipated expiration: 2039-06-12
Also published as: CN112087720A; WO2020248918A1

Abstract

The embodiment of the application provides a communication method and a device, which relate to the field of communication and are particularly suitable for a broadcasting system, wherein the method comprises the following steps: the method comprises the steps that a terminal device receives system information from an access network device, wherein the system information comprises first multicast logic control channel (MCCH) configuration information, and the first MCCH configuration information is used for configuring a first MCCH; the terminal equipment receives the first MCCH according to the first MCCH configuration information; wherein, the first MCCH is configured to carry configuration information of at least one first multicast logical service channel MTCH, and the configuration information of the at least one first MTCH is configured to configure the at least one first MTCH; the terminal device receives the at least one first MTCH according to the configuration information of the at least one first MTCH. The access network device can transmit different types of services to the terminal device through the at least one first MTCH, so that more flexible and dynamic broadcast channel configuration is realized, and the operation efficiency of the communication system is improved.

Description

Communication method and device

Technical Field

The present application relates to the field of communications, and in particular, to a communication method and apparatus.

Background

In the prior art, downlink data transmission services provided by a wireless communication system for a terminal device can be generally divided into two types: unicast traffic and broadcast multicast traffic.

Unicast is a point-to-point communication, that is, a single-point communication between a network device and a terminal device, where the network device can send data for each terminal device to implement personalized service, but when the number of terminal devices is large and the access traffic of the terminal devices is large, all the unicast data transmission modes are adopted, so that the network device is overwhelmed. Broadcast multicast may support point-to-multipoint communication, i.e. the network device transmits the same data to a plurality of terminal devices, e.g. a mobile tv service. Currently, in a long term evolution (long term evolution, LTE) communication system, there are two broadcast multicast service modes, namely a multimedia broadcast multicast service (multimedia broadcast multicast service, MBMS) and a single cell-to-multipoint (SC-PTM), the SC-PTM transmission mode only supports single cell transmission, and support for mobility is poor, and because the coverage area of a single cell is smaller, the gain of the MBMS transmission mode is not obvious compared with that of the unicast transmission, and static cell deployment is required for the MBMS transmission mode, so that flexible broadcast area adjustment cannot be supported.

The fifth generation mobile communication technology (the 5th generation,5G) new air interface (NR) system is a next generation wireless communication system of the LTE system, and as the application of the broadcast multicast communication mode is more and more widespread, in order to more efficiently transmit the emerging broadcast service, the communication system needs to support flexible deployment of the broadcast area, so how the communication system can efficiently configure broadcast channel resources and implement flexible dynamic adjustment is a technical problem to be solved.

Disclosure of Invention

The embodiment of the application provides a communication method and a communication device, which are particularly suitable for a broadcast communication system and can support flexible configuration and dynamic adjustment of a broadcast area.

In a first aspect, a communication method is provided, the method comprising: the method comprises the steps that a terminal device receives system information from an access network device, wherein the system information comprises first multicast logic control channel (MCCH) configuration information, and the first MCCH configuration information is used for configuring a first MCCH; the terminal equipment receives the first MCCH from the access network equipment according to the first MCCH configuration information; wherein, the first MCCH is configured to carry configuration information of at least one first multicast logical service channel MTCH, and the configuration information of the at least one first MTCH is configured to configure the at least one first MTCH; the terminal device receives the at least one first MTCH from the access network device according to the configuration information of the at least one first MTCH.

The method may be performed by a first communication device, which may be a communication apparatus or a communication device capable of supporting the functions required by the communication apparatus to implement the method, such as a system on a chip. The communication device is illustratively a terminal device.

In the embodiment of the present application, after receiving system information from an access network device, a terminal device obtains first MCCH configuration information in the system information, further, after receiving, according to the first MCCH configuration information, first MCCH from the access network device, obtains configuration information of at least one first MTCH carried by the first MCCH, and further, receives, according to the configuration information of at least one first MTCH, at least one first MTCH from the access network device.

The communication method provided by the embodiment of the application can be applied to a broadcast communication system, at least one MCCH is configured through system information, and at least one MTCH is configured through the MCCH, wherein the at least one MCCH and the at least one MTCH can correspond to the same or different service types, so that more flexible and efficient broadcast channel configuration is realized, and the operation efficiency of the communication system is optimized.

With reference to the first aspect, in one possible implementation manner of the first aspect, the configuration information of the at least one first MTCH includes first MTCH configuration information and second MTCH configuration information, where the first MTCH configuration information and the second MTCH configuration information correspond to different service types.

It may be understood that the information carried by the first MCCH includes configuration information of at least one first MTCH, where the configuration information includes first MTCH configuration information and second MTCH configuration information, and further includes configuration information of multiple MTCHs, which are respectively configured for multiple MTCHs. Optionally, the MTCHs correspond to different service types. And the transmission of different services is completed through a plurality of MTCHs, so that more flexible channel configuration in a broadcasting system is realized.

With reference to the first aspect, in a possible implementation manner of the first aspect, the system information further includes second MCCH configuration information, where the second MCCH configuration information is used to configure a second MCCH.

It may be understood that the system information includes first MCCH configuration information and second MCCH configuration information for configuring the first MCCH and the second MCCH, respectively. Further, the system information includes configuration information of a plurality of MCCHs, which are used to configure a plurality of MTCHs, respectively. Optionally, the MTCHs correspond to different service types. And the transmission of different services is completed through a plurality of MTCHs, so that more flexible channel configuration in a broadcasting system is realized.

Further, in one possible design, the first MCCH belongs to a first set of MCCHs and the second MCCH belongs to a second set of MCCHs. The first MCCH set includes at least one first MCCH, and the system information includes a first MCCH common configuration information configuration, and the first MCCH common configuration information configuration is used for configuring the at least one first MCCH. Specifically, for MCCH carrying the same or different types of service data, MCCH common configuration information may be configured, and in order to meet different time delays required by different types of service data in the communication system, different types of services may be categorized into different MCCH sets. By the method provided by the embodiment of the application, the communication system can configure common configuration information for the MCCH carrying the same or the same type of service, so that service configuration is simplified, and the operation efficiency of the communication system is improved.

With reference to the first aspect, in one possible implementation of the first aspect, the configuration information of the at least one first MTCH includes first MTCH common configuration information, where the first MTCH common configuration information is configuration information for configuring the at least one first MTCH.

It may be understood that the configuration information of at least one first MTCH included in the information carried by the first MCCH is used to configure at least one first MTCH, at least one of the at least one first MTCH is configured by first MTCH common configuration information, and in one possible implementation, the first MTCHs of the at least one first MTCH are all configured by the first MTCH common configuration information. The communication method provided by the embodiment of the application provides the configuration method of the public configuration information, and each first MTCH does not need to be configured independently, so that the configuration flow is simplified, and the operation efficiency of the communication system is improved.

With reference to the first aspect, in a possible implementation manner of the first aspect, the second MCCH is configured to carry second MTCH common configuration information, where the second MTCH common configuration information is configuration information for configuring at least one second MTCH.

It may be understood that, for at least one MCCH configured in the system information, there is at least one MCCH carrying MTCH common configuration information, and in a possible implementation, the at least one MCCH configured in the system information configures the MTCH through the MTCH common configuration information, so that the communication system may further simplify the configuration architecture and improve the operation efficiency by using this method.

With reference to the first aspect, in one possible implementation manner of the first aspect, the configuration information of the MTCH includes at least one of MTCH bandwidth part information, MTCH control resource set information, MTCH search space information, MTCH scrambling code identification, MTCH service identification set and group radio network temporary identification (Group radio network temporary identifier, G-RNTI).

The MTCH bandwidth part information is used to configure a bandwidth area of an MTCH, and in one possible implementation, the MTCH bandwidth part information is used to configure a bandwidth part (BWP). The MTCH control resource set information is used to configure a bandwidth region of the MTCH, and in one possible implementation, the MTCH control resource set information is used to configure a control resource set (control resource set, CORESET) of the MTCH. The MTCH search space information is used to configure time domain resources of the MTCH, and in one possible implementation, the MTCH search space information is used to configure Search Space (SS) of the MTCH. The MTCH scrambling code identifier is used for scrambling a downlink shared physical channel PDSCH carrying an MTCH, the MTCH service identifier set includes at least one MTCH service identifier, and the MTCH service identifier is used for distinguishing different service data types, optionally, the service types are represented by a temporary mobile group identifier (temporary mobile group identity, TMGI) or a radio network temporary identifier (radio network temporary identifier, RNTI), and the data of the different service types can be marked by using different TMGIs or RNTIs. In a possible implementation, the terminal device receives the MTCH according to at least one of the above.

With reference to the first aspect, in one possible implementation of the first aspect, the configuration information of the at least one first MTCH includes third MTCH configuration information, and the third MTCH configuration information includes information for configuring a third MTCH. The terminal device receives the third MTCH according to an initial bandwidth part BWP, wherein the initial BWP is used for scheduling the system information; and/or

The terminal equipment receives the third MTCH according to one of an initial control resource set CORESET, paging CORESET and response CORESET corresponding to a random access channel RACH, wherein the initial CORESET is used for scheduling the system information, the paging CORESET is used for scheduling a paging channel, and the RACH response CORESET is used for scheduling a RACH response channel; and/or

The terminal equipment receives the third MTCH according to an initial search space SS, which is used for scheduling the system information, a paging SS, which is used for scheduling a paging channel, and a RACH response SS, which is used for scheduling a RACH response channel.

In a possible implementation, the terminal device receives a first MCCH according to an initial bandwidth portion BWP, where the initial BWP is used for scheduling the system information, and optionally, the first MCCH configuration information includes at least one of first MCCH control resource set information, first MCCH search space information, a first MCCH scrambling code identifier and a radio network temporary identifier RNTI of the first MCCH, and does not include the first MCCH bandwidth portion information.

In one possible implementation, the terminal device receives a third MTCH according to one of an initial control resource set CORESET, a paging CORESET, and a random access channel RACH response CORESET, the initial CORESET being used for scheduling the system information, the paging CORESET being used for scheduling a paging channel, the RACH response CORESET being used for scheduling a RACH response channel, optionally, the third MTCH configuration information including MTCH bandwidth part information, MTCH search space information, MTCH scrambling code identification, at least one of an MTCH service identification set and a group radio network temporary identification G-RNTI, excluding MTCH control resource set information.

In one possible implementation, the terminal device receives a third MTCH according to one of an initial search space SS, a paging SS and a RACH response SS, the initial SS being used for scheduling the system information, the paging SS being used for scheduling a paging channel, the RACH response SS being used for scheduling a RACH response channel, optionally, the third MTCH configuration information includes at least one of MTCH bandwidth part information, MTCH control resource set information, MTCH scrambling code identification, MTCH service identification set, and group radio network temporary identification G-RNTI, excluding MTCH search space information.

In one possible implementation, the terminal device receives a third MTCH according to the first MCCH scrambling code identifier, and optionally, the configuration information of the third MTCH includes at least one of MTCH bandwidth part information, MTCH control resource set information, MTCH search space information, an MTCH service identifier set and a group radio network temporary identifier G-RNTI, and does not include an MTCH scrambling code identifier.

It should be noted that the third MTCH is one of the at least one first MTCH, which is merely an exemplary illustration, and any of the at least one first MTCH may have the above features in one possible design. In one possible implementation, the configuration information of the at least one first MTCH includes first MTCH configuration information and second MTCH configuration information, the first MTCH configuration information and the second MTCH configuration information corresponding to different traffic types, and the third MTCH may be equal to the first MTCH or the second MTCH. It may be understood that the plurality of MTCH configuration information carried by the first MCCH includes at least one of MTCH bandwidth part information, MTCH control resource set information, MTCH search space information, MTCH scrambling code identifier, MTCH service identifier set and group radio network temporary identifier G-RNTI, and different services may be respectively transmitted through the plurality of MTCHs by configuring configuration information corresponding to different service types for the plurality of MTCHs, thereby implementing flexible configuration of the broadcast system. In another possible implementation, the configuration information of the at least one first MTCH includes first MTCH common configuration information that is configuration information common to the at least one first MTCH for configuring the at least one first MTCH, wherein the at least one first MTCH includes the third MTCH. Specifically, the plurality of MTCH configuration information carried by the first MCCH includes common configuration information, where the common configuration information is used to configure the plurality of MTCHs, so that the access network device can implement unified configuration of the plurality of MTCHs configured by the first MCCH, simplify a configuration flow, and promote operation efficiency of the communication system.

With reference to the first aspect, in a possible implementation manner of the first aspect, the first MCCH configuration information includes at least one of first MCCH bandwidth portion information, first MCCH control resource set information, first MCCH search space information, a first MCCH scrambling code identifier and a radio network temporary identifier RNTI of the first MCCH.

The first MCCH bandwidth portion information is used to configure a bandwidth area of the first MCCH, and in one possible implementation, the first MCCH bandwidth portion information is used to configure BWP of the first MCCH. The first MCCH control resource set information is used to configure frequency domain resources of the first MCCH, and in one possible implementation, the first MCCH control resource set information is used to configure CORESET that schedules downlink control information (download control information, DCI) of the first MCCH. The first MCCH search space information is used to configure time domain resources of the first MCCH, and in one possible implementation, the first MCCH search space information is used to configure SS that schedules DCI of the first MCCH. In the communication method provided by the embodiment of the application, the first MCCH scrambling code identifier is different from the wireless network temporary identifier.

With reference to the first aspect, in a possible implementation manner of the first aspect, the terminal device receives the first MCCH according to the initial bandwidth portion BWP; and/or the terminal equipment receives the first MCCH according to the initial CORESET, and one of the paging CORESET and the RACH response CORESET; and/or the terminal equipment receives the first MCCH according to the initial search space SS, wherein one of the paging SS and the RACH response SS.

In one possible implementation, the terminal device receives a first MCCH according to one of an initial control resource set CORESET, a paging CORESET, and a random access channel RACH response CORESET, where the initial CORESET is used to schedule the system information, the paging CORESET is used to schedule a paging channel, the paging channel is a PDSCH carrying a paging message, a PDCCH for scheduling the PDSCH is sent in the paging CORESET, and the RACH response CORESET is used to schedule the RACH response channel. Optionally, the first MCCH configuration information includes at least one of first MCCH bandwidth portion information, first MCCH search space information, a first MCCH scrambling code identifier and a radio network temporary identifier RNTI of the first MCCH, and does not include the first MCCH control resource set information.

In one possible implementation, the terminal device receives a first MCCH according to an initial search space SS, one of the paging SS and the RACH response SS, the initial SS for scheduling the system information, the paging SS for scheduling a paging channel, and the RACH response SS for scheduling a RACH response channel. Optionally, the first MCCH configuration information includes at least one of first MCCH bandwidth portion information, first MCCH control resource set information, a first MCCH scrambling code identifier and a radio network temporary identifier RNTI of the first MCCH, and does not include the first MCCH search space information.

According to the method, the broadcast communication system does not need to configure each first MCCH independently, so that the configuration flow is simplified, and the operation efficiency of the communication system is improved.

With reference to the first aspect, in one possible implementation manner of the first aspect, the configuration information of the at least one first MTCH and at least one parameter included in the configuration information of the first MCCH have the same parameter value.

The at least one parameter includes at least one of MTCH bandwidth part information, MTCH control resource set information, MTCH search space information, and MTCH scrambling code identification. Specifically, the MTCH bandwidth part information, the MTCH control resource set information, and at least one parameter of the MTCH search space information and the MTCH scrambling code identifier in the configuration information of the at least one first MTCH are the same as the parameter value of the parameter of the corresponding function in the first MCCH configuration information. In one possible implementation, the access network device instructs the terminal device to receive at least one first MTCH according to the first MCCH configuration information through the instruction information, specifically, the access network device sends a first instruction field to the terminal device, where the first instruction field is used to instruct MTCH bandwidth part information in the configuration information of the at least one first MTCH, MTCH control resource set information, MTCH search space information, and at least one parameter in an MTCH scrambling code identifier is the same as a parameter value of a corresponding parameter in the first MCCH configuration information. In another possible implementation, the configuration information of the at least one first MTCH and the parameters of the corresponding function in the first MCCH configuration information have a implicit rule, and in particular, the configuration information of the at least one first MTCH and the first MCCH configuration information have an inherited relationship preset by a network device or predefined by a communication standard. According to the communication method provided by the embodiment of the application, the terminal equipment can receive the MTCH according to the configuration information of the MCCH, so that the configuration flow of a communication system is simplified, and the communication efficiency is improved.

In a second aspect, there is provided a second communication method, the method comprising: the access network equipment sends system information to the terminal equipment, wherein the system information comprises first multicast logic control channel (MCCH) configuration information, and the first MCCH configuration information is used for configuring a first MCCH; the access network equipment sends the first MCCH to the terminal equipment; wherein, the first MCCH is configured to carry configuration information of at least one first multicast logical service channel MTCH, and the configuration information of the at least one first MTCH is configured to configure the at least one first MTCH; the access network device sends the at least one first MTCH to the terminal device.

The method may be performed by a second communication device, which may be a communication apparatus or a communication device capable of supporting the functions required by the communication apparatus to implement the method, such as a chip system. Illustratively, the communication device is an access network device.

In the embodiment of the application, the access network device can send configuration information of a first MCCH to the terminal device by sending system information, further, at least one first MTCH is configured by sending the first MCCH to the terminal device, further, at least one first MTCH is sent to the terminal device, and further, broadcast data is transmitted to the terminal device.

The communication method provided by the embodiment of the application can be applied to a broadcast communication system, the access network equipment configures at least one MCCH through system information, and configures at least one MTCH through the MCCH, wherein the at least one MCCH and the at least one MTCH can correspond to the same or different service types, so that more flexible and efficient broadcast channel configuration is realized, and the operation efficiency of the communication system is optimized.

With reference to the second aspect, in one possible implementation manner of the second aspect, the configuration information of the at least one first MTCH includes first MTCH configuration information and second MTCH configuration information, where the first MTCH configuration information and the second MTCH configuration information correspond to different service types.

With reference to the second aspect, in a possible implementation manner of the second aspect, the system information further includes second MCCH configuration information, where the second MCCH configuration information is used to configure a second MCCH.

It may be understood that the system information includes first MCCH configuration information and second MCCH configuration information for configuring the first MCCH and the second MCCH, respectively. Further, the system information includes configuration information of a plurality of MCCHs, which are used to configure a plurality of MTCHs, respectively. Optionally, the MTCHs correspond to different service types. The access network equipment completes the transmission of different services through a plurality of MTCHs, thereby realizing more flexible channel configuration in a broadcasting system.

Further, in one possible design, the first MCCH belongs to a first set of MCCHs and the second MCCH belongs to a second set of MCCHs. The first MCCH set includes at least one first MCCH, and the system information includes a first MCCH common configuration information configuration, and the first MCCH common configuration information configuration is used for configuring the at least one first MCCH. Specifically, for MCCH carrying the same or different types of service data, MCCH common configuration information may be configured, and in order to meet different time delays required by different types of service data in the communication system, different types of services may be categorized into different MCCH sets. The method provided by the embodiment of the application can configure common configuration information for the MCCH carrying the same or same type of service so as to simplify service configuration and improve the operation efficiency of a communication system.

With reference to the second aspect, in one possible implementation of the second aspect, the configuration information of the at least one first MTCH includes first MTCH common configuration information, where the first MTCH common configuration information is configuration information for configuring the at least one first MTCH.

It may be understood that the configuration information of at least one first MTCH included in the information carried by the first MCCH is used to configure at least one first MTCH, at least one of the at least one first MTCH is configured by first MTCH common configuration information, and in one possible implementation, the access network device configures all first MTCHs in the at least one first MTCH through the first MTCH common configuration information. The communication method provided by the embodiment of the application provides the configuration method of the public configuration information, and each first MTCH does not need to be configured independently, so that the configuration flow is simplified, and the operation efficiency of the communication system is improved.

With reference to the second aspect, in one possible implementation of the second aspect, the second MCCH is configured to carry second MTCH common configuration information, where the second MTCH common configuration information is configuration information for configuring at least one second MTCH.

With reference to the second aspect, in one possible implementation of the second aspect, the configuration information of the MTCH includes at least one of MTCH bandwidth part information, MTCH control resource set information, MTCH search space information, MTCH scrambling code identification, MTCH service identification set and G-RNTI.

The MTCH bandwidth part information is used to configure a bandwidth region of the MTCH, and in one possible implementation, the MTCH bandwidth part information is used to configure BWP. The MTCH control resource set information is used to configure frequency domain resources of the MTCH, and in one possible implementation, the MTCH control resource set information is used to configure CORESET of the MTCH. The MTCH search space information is used to configure time domain resources of the MTCH, and in one possible implementation, the MTCH search space information is used to configure SS of the MTCH. In the communication method provided by the embodiment of the application, the access network device sends the MTCH in a broadcast area including at least one physical cell, when the broadcast area is a cell, the MTCH scrambling code identifier may be a physical cell identifier of a corresponding cell, and when the broadcast area includes a plurality of cells, the MTCH scrambling code identifier may be a virtual cell identifier unified corresponding to the plurality of cells, different from a radio network temporary identifier. Configuring the MTCH scrambling code identification of the scrambling PDSCH for a plurality of cells can scramble a plurality of cells or a plurality of beams in a broadcast area by adopting a uniform scrambling code identification, and in this way, signals of the plurality of cells or the plurality of beams can be combined in a physical layer, thereby enhancing signal-to-noise ratio. The MTCH service identifier set includes at least one MTCH service identifier, where the MTCH service identifier is used to distinguish different service data types, and optionally, the service types are represented by TMGIs or RNTIs, and the data of different service types may be marked by using different TMGIs or RNTIs. In one possible implementation, the terminal device receives the MTCH according to at least one of the above.

With reference to the second aspect, in one possible implementation of the second aspect, the configuration information of the at least one first MTCH includes third MTCH configuration information, and the third MTCH configuration information includes information for configuring a third MTCH. The access network device sends a third MTCH to the terminal device in a bandwidth area corresponding to an initial bandwidth part BWP, wherein the initial BWP is used for scheduling the system information; and/or

The access network equipment sends a third MTCH to the terminal equipment on a corresponding frequency domain resource in an initial control resource set CORESET, a paging CORESET and a random access channel RACH response CORESET, wherein the initial CORESET is used for scheduling the system information, the paging CORESET is used for scheduling a paging channel, and the RACH response CORESET is used for scheduling the RACH response channel; and/or

The access network device sends a third MTCH to the terminal device on a time domain resource corresponding to one of an initial search space SS, a paging SS and a RACH response SS, wherein the initial SS is used for scheduling the system information, the paging SS is used for scheduling a paging channel, and the RACH response SS is used for scheduling the RACH response channel.

With reference to the second aspect, in a possible implementation manner of the second aspect, the first MCCH configuration information includes at least one of first MCCH bandwidth portion information, first MCCH control resource set information, first MCCH search space information, a first MCCH scrambling code identifier and a radio network temporary identifier RNTI of the first MCCH.

The first MCCH bandwidth portion information is used to configure a bandwidth area of the first MCCH, and in one possible implementation, the first MCCH bandwidth portion information is used to configure BWP of the first MCCH. The first MCCH control resource set information is used to configure frequency domain resources of the first MCCH, and in one possible implementation, the first MCCH control resource set information is used to configure CORESET for scheduling DCI of the first MCCH. The first MCCH search space information is used to configure time domain resources for scheduling DCI for the first MCCH, and in one possible implementation, the first MCCH search space information is used to configure SS for the first MCCH. In the communication method provided by the embodiment of the application, the first MCCH scrambling code identifier is different from the wireless network temporary identifier.

With reference to the second aspect, in one possible implementation manner of the second aspect, the access network device sends a first MCCH to the terminal device in a bandwidth area corresponding to the initial BWP; and/or the access network device sends a first MCCH to the terminal device in a bandwidth area corresponding to one of the initial CORESET, the paging CORESET and the RACH response CORESET; and/or the access network equipment sends a first MCCH to the terminal equipment in a time domain corresponding to one of the paging SS and the RACH response SS in the initial search space SS.

In a possible implementation, the terminal device receives a first MCCH according to the initial bandwidth portion BWP, and optionally, the first MCCH configuration information includes at least one of first MCCH control resource set information, first MCCH search space information, a first MCCH scrambling code identifier and a radio network temporary identifier RNTI of the first MCCH, and does not include the first MCCH bandwidth portion information.

In one possible implementation, the terminal device receives a first MCCH according to the initial control resource set CORESET, and one of the paging CORESET and the random access channel RACH response CORESET, and optionally, the first MCCH configuration information includes at least one of first MCCH bandwidth portion information, first MCCH search space information, a first MCCH scrambling code identifier and a radio network temporary identifier RNTI of the first MCCH, and does not include first MCCH control resource set information.

In one possible implementation, the terminal device receives a first MCCH according to one of the paging SS and the RACH response SS according to the initial search space SS. Optionally, the first MCCH configuration information includes at least one of first MCCH bandwidth portion information, first MCCH control resource set information, a first MCCH scrambling code identifier and a radio network temporary identifier RNTI of the first MCCH, and does not include the first MCCH search space information.

According to the method, the access network equipment does not need to configure each first MCCH independently, so that the configuration flow is simplified, and the operation efficiency of the communication system is improved.

With reference to the second aspect, in a possible implementation manner of the second aspect, the configuration information of the at least one first MTCH and at least one parameter included in the configuration information of the first MCCH have the same parameter value.

The at least one parameter includes at least one of MTCH bandwidth part information, MTCH control resource set information, MTCH search space information, and MTCH scrambling code identification. Specifically, the MTCH bandwidth part information, the MTCH control resource set information, and at least one parameter of the MTCH search space information and the MTCH scrambling code identifier in the configuration information of the at least one first MTCH are the same as the parameter value of the parameter of the corresponding function in the first MCCH configuration information. In one possible implementation, the access network device instructs the terminal device to receive at least one first MTCH according to the first MCCH configuration information through the instruction information, specifically, the access network device sends a first instruction field to the terminal device, where the first instruction field is used to instruct MTCH bandwidth part information in the configuration information of the at least one first MTCH, MTCH control resource set information, MTCH search space information, and at least one parameter in an MTCH scrambling code identifier is the same as a parameter value of a corresponding parameter in the first MCCH configuration information. In another possible implementation, the configuration information of the at least one first MTCH and the parameters of the corresponding function in the first MCCH configuration information have a implicit rule, and in particular, the configuration information of the at least one first MTCH and the first MCCH configuration information have an inherited relationship preset by a network device or predefined by a communication standard. According to the communication method provided by the embodiment of the application, the access network equipment can transmit the MTCH according to the configuration information of the MCCH, and each MTCH does not need to be configured independently, so that the configuration flow of a communication system is simplified, and the communication efficiency is improved.

In a third aspect, there is provided a first communications device, for example the device is a first communications device as hereinbefore described. The apparatus comprises a memory and at least one processor, the memory and the processor being coupled to each other for implementing the method described in the above-mentioned first aspect or in the various possible designs of the first aspect. The communication means is illustratively a chip provided in the communication device. The communication device is an exemplary terminal device. Wherein the memory is configured to store instructions or a program which, when executed by the at least one processor, cause the first communication device to perform the method of the first aspect or any of the possible implementation manners of the first aspect.

The first communication means may further comprise a communication interface, which may be a transceiver in the terminal device, for example by means of an antenna, a feeder, a codec, etc. in said communication means, or, if the first communication means is a chip provided in the terminal device, the communication interface may be an input/output interface of the chip, for example an input/output pin, etc.

In a fourth aspect, a second communication device is provided, for example the device is a second communication device as described above. The apparatus comprises a memory and at least one processor, the memory and the processor being coupled to each other for implementing the method described in the second aspect or in the various possible designs of the second aspect. The communication means is illustratively a chip provided in the communication device. Illustratively, the communication device is an access network device. Wherein the memory is configured to store instructions or a program which, when executed by the at least one processor, cause a second communication device to perform the method of the second aspect or any one of the possible implementations of the second aspect.

The second communication means may further comprise a communication interface, which may be a transceiver in the access network device, for example by means of an antenna, a feeder, a codec, etc. in said communication means, or, if the second communication means is a chip provided in the access network device, an input/output interface of the chip, for example an input/output pin, etc.

In a fifth aspect, a third communication device is provided, for example the first communication device as described above. The communication device is configured to perform the method of the first aspect or any of the possible implementation manners of the first aspect. In particular, the communication device may comprise means for performing the method of the first aspect or any of the possible implementations of the first aspect, e.g. comprising a processing module and a transceiver module. The communication device is an exemplary terminal device. Wherein, the liquid crystal display device comprises a liquid crystal display device,

the transceiver module is configured to receive system information, a first MCCH, and at least one first MTCH from an access network device.

The processing module acquires first MCCH configuration information in the system information after the receiving and transmitting module receives the system information; after receiving the first MCCH, acquiring configuration information of at least one first MTCH carried by the first MCCH.

Regarding the technical effects of the fifth aspect or the various possible embodiments of the fifth aspect, reference may be made to the description of the technical effects of the first aspect or the corresponding embodiments of the first aspect.

In a sixth aspect, there is provided a fourth communication device, for example the second communication device as described above. The communication device is configured to perform the method of the second aspect or any of the possible implementations of the second aspect. In particular, the communication device may comprise means for performing the method of the second aspect or any of the possible implementations of the second aspect, e.g. comprising a processing module and a transceiver module. Illustratively, the communication device is an access network apparatus. Wherein, the liquid crystal display device comprises a liquid crystal display device,

the transceiver module is configured to send system information, a first MCCH, and at least one first MTCH to a terminal device.

It is to be understood that the processing module in the embodiments of the present application may be implemented by a processor or a processor-related circuit component, and the transceiver module may be implemented by a transceiver or a transceiver-related circuit component.

Regarding the technical effects of the sixth aspect or the various possible embodiments of the sixth aspect, reference may be made to the description of the technical effects of the second aspect or the corresponding embodiments of the second aspect.

In a seventh aspect, there is provided a fifth communications device, for example the first communications device as hereinbefore described. The apparatus comprises a communication interface and at least one processor, said communication interface being connected to said at least one processor for implementing the method described in the above-mentioned first aspect or in the various possible designs of the first aspect. The communication means is illustratively a chip provided in the communication device. The communication device is an exemplary terminal device.

Wherein the communication interface is configured to obtain a program or instructions, and the processor, by executing the program or instructions, causes a first communication device to perform the method according to the first aspect or any one of the possible implementation manners of the first aspect. The communication interface may be a transceiver in the terminal device, e.g. implemented by an antenna, a feeder, a codec etc. in the communication means, or if the first communication means is a chip provided in the terminal device, the communication interface may be an input/output interface of the chip, e.g. an input/output pin etc. The processor may be a single semiconductor chip, or may be integrated with other circuitry into a single semiconductor chip, for example, may form a system on a chip (SoC) with other circuitry (e.g., codec circuitry, hardware accelerator circuitry, or various buses and interface circuitry), or may be integrated into the ASIC as a built-in processor of an application specific integrated circuit (application specific integrated circuit, ASIC), which may be packaged separately or may be packaged with other circuitry. The processor may further include necessary hardware accelerators, such as field programmable gate arrays (field programmable gate array, FPGAs), programmable logic devices (programmable logic device, PLDs), or logic circuits implementing dedicated logic operations, in addition to the cores for executing software instructions to perform the operations or processing.

In an eighth aspect, there is provided a sixth communications device, for example the second communications device as hereinbefore described. The apparatus comprises a communication interface and at least one processor, said communication interface being connected to said at least one processor for implementing the method described in the above second aspect or in the various possible designs of the second aspect. The communication means is illustratively a chip provided in the communication device. Illustratively, the communication device is an access network device.

Wherein the communication interface is configured to obtain a program or instructions, and the processor, by executing the program or instructions, causes the first communication device to perform the method according to the second aspect or any one of the possible implementation manners of the second aspect. The communication interface may be a transceiver in the access network device, e.g. implemented by means of antennas, feeders, codecs etc. in said communication means, or if the first communication means is a chip arranged in the access network device, the communication interface may be an input/output interface of the chip, e.g. input/output pins etc. The processor may be a single semiconductor chip or may be integrated with other circuitry into a single semiconductor chip, for example, may form a SoC with other circuitry (e.g., codec circuitry, hardware acceleration circuitry, or various buses and interface circuitry), or may be integrated into the ASIC as an embedded processor of an ASIC, which may be packaged separately or together with other circuitry. The processor may further include necessary hardware accelerators, such as FPGAs, PLDs, or logic circuits that implement dedicated logic operations, in addition to the cores for executing software instructions to perform the operations or processing.

In a ninth aspect, there is provided a computer storage medium having instructions stored therein which, when run on a computer, cause the computer to perform the method described in any one of the possible designs of the first aspect or the first aspect.

In a tenth aspect, there is provided a computer storage medium having instructions stored therein which, when run on a computer, cause the computer to perform the method described in the second aspect or any one of the possible designs of the second aspect.

In an eleventh aspect, there is provided a computer program product comprising instructions stored therein, which when run on a computer, cause the computer to perform the method described in any one of the above-mentioned first aspects or any one of the possible designs of the first aspect.

In a twelfth aspect, there is provided a computer program product comprising instructions stored therein, which when run on a computer, cause the computer to perform the method described in the second aspect or any one of the possible designs of the second aspect.

Drawings

FIG. 1 is a schematic diagram of a broadcast mode in the prior art;

FIG. 2 is a schematic diagram of yet another broadcast mode in the prior art;

FIG. 3 is a flow chart of one possible communication method provided by an embodiment of the present application;

fig. 4 is a schematic block diagram of a terminal device according to an embodiment of the present application;

fig. 5 is another schematic block diagram of a terminal device according to an embodiment of the present application;

fig. 6 is a schematic block diagram of an access network device according to an embodiment of the present application;

fig. 7 is another schematic block diagram of an access network device according to an embodiment of the present application;

FIG. 8 is a schematic block diagram of a communication device provided by an embodiment of the present application;

FIG. 9 is another schematic block diagram of a communication device provided by an embodiment of the present application;

FIG. 10 is yet another schematic block diagram of a communication device according to an embodiment of the present application;

fig. 11 is a further schematic block diagram of an access network device according to an embodiment of the present application.

Detailed Description

The network architecture and the service scenario described in the embodiments of the present application are for more clearly describing the technical solution of the embodiments of the present application, and do not constitute a limitation on the technical solution provided by the embodiments of the present application, and those skilled in the art can know that, with the evolution of the network architecture and the appearance of the new service scenario, the technical solution provided by the embodiments of the present application is applicable to similar technical problems.

In the description of the embodiments of the present application, "at least one" means one or more, and "a plurality" means two or more. "and/or", describes an association relationship of an association object, and indicates that there may be three relationships, for example, a and/or B, and may indicate: a alone, a and B together, and B alone, wherein a, B may be singular or plural. The character "/" generally indicates that the context-dependent object is an "or" relationship. "at least one of" or the like means any combination of these items, including any combination of single item(s) or plural items(s). For example, at least one (one) of a, b, or c may represent: a, b, c, a-b, a-c, b-c, or a-b-c, wherein a, b, c may be single or plural.

And, unless specified to the contrary, references to "first," "second," etc. ordinal words of embodiments of the present application are used for distinguishing between multiple objects and are not used for limiting the order, timing, priority, or importance of the multiple objects. For example, the first identifier and the second identifier are identifiers having different meanings, and are not different in content, priority, importance, or the like.

In the following, some terms in the embodiments of the present application are explained for easy understanding by those skilled in the art.

Terminal devices, including devices that provide voice and/or data connectivity to a user, may include, for example, a handheld device having wireless connectivity, or a processing device connected to a wireless modem. The terminal device may communicate with the core network via a radio access network (radio access network, RAN), exchanging voice and/or data with the RAN. The terminal device may include a User Equipment (UE), a wireless terminal device, a mobile terminal device, a subscriber unit (subscriber unit), a subscriber station (subscriber station), a mobile station (mobile), a remote station (remote station), an Access Point (AP), a remote terminal device (remote terminal), an access terminal device (access terminal), a user terminal device (user terminal), a user agent (user agent), or a user equipment (user device), etc. For example, mobile telephones (or "cellular" telephones) computers with mobile terminal devices, portable, pocket, hand-held, computer-built-in or vehicle-mounted devices, smart wearable devices, and the like may be included. Such as personal communication services (personal communication service, PCS) phones, cordless phones, session initiation protocol (session initiation protocol, SIP) phones, wireless local loop (wireless local loop, WLL) stations, personal digital assistants (personal digital assistant, PDAs), and the like. But also limited devices such as devices with lower power consumption, or devices with limited memory capabilities, or devices with limited computing capabilities, etc. Examples include bar codes, radio frequency identification (radio frequency identification, RFID), sensors, global positioning systems (global positioning system, GPS), laser scanners, and other information sensing devices. The embodiment of the application does not limit the specific technology and the specific equipment form adopted by the terminal equipment. For convenience and brevity of description, the UE is taken as an example of the terminal device in the following description.

The access network device corresponds to different devices in different systems. For example, in a second generation (2th generation,2G) communication system, the RAN equipment may include a base station and a base station controller; the RAN equipment in the third generation (3th generation,3G) communication system may include base stations and radio network controllers (radio network controller, RNC); including a long term evolution (long term evolution, LTE) system or an evolved base station (NodeB or eNB or e-NodeB, evolutional Node B) in long term evolution advanced (long term evolution-LTE-a); or may also include a next generation node B (next generation node B, gNB) in a fifth generation mobile communication technology (5G) new air interface (NR) system, or may also include a Centralized Unit (CU) and a Distributed Unit (DU) in a Cloud access network (Cloud radio access network, cloud RAN) system. New network side devices may be corresponding in future evolution or emerging systems, and embodiments of the present application are not limited.

The communication method provided by the embodiment of the application is applied to broadcast multicast modes in communication systems such as 5G, LTE and the like, and two broadcast multicast service modes, namely multimedia broadcast multicast service (multimedia broadcast multicast service, MBMS) and single cell-point-to-multipoint (SC-PTM), exist in the LTE communication system. In the following, a part of the words of the broadcast communication system in the embodiment of the present application will be explained for the convenience of those skilled in the art to understand.

The SC-PTM broadcast mode supports providing broadcast services within a single cell, as shown in fig. 1, for which a base station may broadcast or multicast to a group of UEs. The SC-PTM mode does not need to synchronously send the service in a plurality of cells, the granularity of multicast cell planning can be physical cells, and the configuration can be carried out according to the position of the UE and the service requirement, and compared with the large-area planning required by the MBMS transmission mode, the SC-PTM mode is more flexible. In addition, the control information of the SC-PTM mode is carried in the physical layer signaling, such as downlink control information (downlink control information, DCI), so that dynamic scheduling can be supported, and not only the scheduling parameters such as resource allocation and modulation coding scheme can be flexibly adjusted, but also the dynamic switching with unicast service can be realized. However, the SC-PTM mode also has the following disadvantages: firstly, the SC-PTM mode only supports single cell point to multipoint at present, so mobility support is insufficient, and when UE switches between different cells, service continuity may be affected; secondly, the coverage area of a single cell is smaller, and the probability that a plurality of UE share the broadcast service is lower, so that the gain of the SC-PTM mode is not obvious compared with that of the unicast transmission; third, the SC-PTM mode needs to ensure the lowest signal-to-noise ratio of all served UEs in the cell, and the spectrum efficiency is even lower than that of unicast transmission in some scenarios, compared to the gain of unicast transmission.

In the SC-PTM broadcast mode, the access network device configures a single cell multicast control logic channel (SC-MCCH) through SIBs, including the time domain location of the SC-MCCH. The SC-PTM configuration information carried by the SC-MCCH includes configuration information of a single-cell multicast service logical channel (SC-MTCH), and the configuration information includes a temporary mobile group identity (temporary mobile group identity, TMGI), a session identifier (session ID), a G-RNTI for scrambling DCI, and configuration information of discontinuous reception of a time domain (discontinuous reception, DRX). Both logical channels SC-MCCH and SC-MTCH are mapped to a downlink shared physical channel (physical downlink shared channel, PDSCH) in the physical layer, and DCI is carried on a physical downlink control channel (physical downlink control channel, PDCCH). The terminal equipment acquires the PDSCH of the physical downlink channel scheduled by the terminal equipment through detecting DCI scrambled by a group radio network temporary identifier (Group radio network temporary identifier, G-RNTI) G-RNTI, and further acquires service data carried by the PDSCH.

The MBMS broadcast mode provides a point-to-multipoint multimedia data transmission mechanism, as shown in fig. 2, in which one MBMS broadcast area is generally formed by a plurality of cells located in broadcast areas of neighboring base stations, cells located in the same MBMS area transmit the same service on the same time-frequency resource to improve the transmission signal strength of MBMS, and the reception strength of terminal equipments (terminal equipment, TE) located in edge cells can be improved. The MBMS broadcast mode may use a single frequency network (single frequency network, SFN) to form a multimedia broadcast multicast single frequency network (multimedia broadcast multicast service single frequency network, MBSFN) to transmit broadcast services, so as to improve the signal to noise ratio, so as to solve the problem of low spectral efficiency caused by the need of ensuring the minimum signal to noise ratio of all served UEs in the cell in the SC-PTM mode. However, the broadcast area of the MBMS mode needs to be statically planned in advance, the size of the area and the number of covered cells are relatively fixed, and the magnitude of the area is very large, and the service content transmitted by the area is statically configured, so that flexible and dynamic area adjustment cannot be performed according to the location of the terminal device and the required service. Currently, MBMS mode has some drawbacks: on the one hand, because of the static configuration of the MBMS area, its control information is carried in the radio resource control (radio resource control, RRC) signaling, and there is no channel state information (channel state information, CSI) feedback and hybrid automatic repeat request (hybrid automatic repeat request, HARQ) feedback for the MBMS mode at present, so that the scheduling parameters such as the resource configuration and the modulation coding scheme cannot be flexibly and dynamically adjusted. On the other hand, for UEs located in the MBMS area and not requiring reception of broadcast services, the base station also needs to transmit broadcast services to it on broadcast resources, thus causing serious waste of resources.

In MBSFN broadcast mode, the access network device configures a multicast control logic channel (multicast control channel, MCCH) of the MBSFN through a system information block (system information block, SIB) including information required for receiving the MCCH including at least one of a time domain location of the MCCH, a region identification and a modulation and coding scheme (modulation and coding scheme, MCS). The MCCH carries information required for receiving a broadcast traffic logical channel (multicast traffic channel, MTCH), including configuration information of the MTCH, such as at least one of a TMGI, a session ID, a time domain location of the MTCH, and an MCS. And the UE receives the physical channel PMCH according to the configuration information and acquires the service data carried by the PMCH. It should be noted that, both the two logical channels MCCH and MTCH are mapped to PMCH in the physical layer, and the PMCH carries the service data in the MTCH.

The 5G NR system is a next generation wireless communication system of the LTE system, and has better and more flexible forward compatibility than the LTE system. In the NR system, the size of one radio frame is 10ms, which includes 10 subframes each having a duration of 1ms, unlike in the LTE system in that the NR system supports a plurality of subcarrier spacings, for example, 15 kilohertz (kHz), 30kHz,60kHz,120kHz. The scheduling granularity of the NR system is a slot, and in the prior art 1 slot typically includes 14 time domain symbols. Therefore, when the NR system adopts the same subcarrier spacing of 15kHz as that of the LTE system, the duration of 1 slot is 1ms, which is equal to the size of one subframe; when the NR system employs a subcarrier spacing of 30kHz, the duration of 1 slot is 0.5ms.

Resource Block (RB): or a physical resource block, which is a unit of frequency domain resource, wherein the frequency domain occupies continuous M subcarriers, and M is a natural number larger than zero. For example, in LTE, one RB occupies 12 consecutive subcarriers in the frequency domain.

Resource block Set (Resource Block Set, RB Set): and a set of a plurality of RBs.

Bandwidth Part (BWP): the multiple physical resource blocks in the frequency domain are configured for the terminal device by the network device. The terminal device receives or transmits data within the BWP. Taking control resource transmission as an example, at least one control resource set is included in one BWP, and the frequency domain resources included in the control resource set do not exceed a plurality of physical resource blocks included in the BWP on the frequency domain. The LTE system is scheduled with carrier wave as granularity in the frequency domain, and it can be understood that data is scheduled and transmitted based on each carrier wave, while the NR system introduces the concept of BWP in order to flexibly support different bandwidth capabilities of different kinds of terminal devices, and a part of bandwidth area is divided for the terminal devices in the carrier wave, and the terminal devices only need to work on at least one BWP in one carrier wave configured by the network device, without knowing the width of the whole carrier wave. The BWP is a subset of the system carrier bandwidth, and the plurality of bandwidth regions may overlap (overlap) in the frequency domain. The network device may activate one of the downlink/uplink bandwidth regions for the terminal device from the configured bandwidth region, transmit PDSCH and PDCCH for the terminal device in the activated downlink bandwidth region, and transmit uplink shared channel (physical uplink shared channel, PUSCH) for the network in the activated uplink bandwidth region. For example, the carrier is 100MHz, BWP1 allocated to UE1 is 100MHz, which is equivalent to UE1 receiving data in the entire carrier range, and UE2 is configured to operate on BWP2 of some 40MHz in the carrier, so UE2 only needs to receive data in the corresponding BWP2, and no attention is paid to scheduling and data transmission except BWP 2.

Control resource set (Control Resource Set, CORESET): the number of symbols in the frequency domain subband and the time domain occupied in BWP indicates the position of the channel in the frequency domain, the set of resources used for control channel transmission, and the time domain resources of CORESET may be continuous or discontinuous. For example, a certain 12 RBs are occupied in BWP and the time domain length is 2 consecutive time domain symbols.

Search Space (SS): may also be referred to as a search space set (SS set), and the description of the search space or set of search spaces is subsequently simplified to a search space for convenience of description. The monitoring period and a specific time domain symbol occasion in a specific time slot within one period indicate the position of the channel in the time domain. The time domain scheduling of the NR system is more flexible than that of the LTE system, and the NR system supports flexible scheduling of various symbol lengths within 1 slot, for example, a transmission time interval (transmission time interval, TTI) may be 2 time domain symbols or 14 time domain symbols, and an SS is used to configure a monitoring period of a channel, and may receive the channel in combination with CORESET. For example, the SS is configured to 5 slots, and then the terminal device searches for a channel within the corresponding CORESET every 5 slots.

For easy understanding, the communication method provided by the embodiment of the application is specifically described below with reference to the accompanying drawings.

Example 1

The embodiment of the application provides a multi-cell point-to-multipoint (MC-PTM) broadcast multicast transmission mode. Fig. 3 shows a specific implementation form of the communication method according to the embodiment of the present application, and the scheme provided by the embodiment of the present application is described below according to fig. 3, including steps 301 to 306.

301. The access network device sends system information to the terminal device, wherein the system information comprises first multicast logic control channel MCCH configuration information, and the first MCCH configuration information is used for configuring a first MCCH.

302. And the terminal equipment receives the system information from the access network equipment and further acquires the first MCCH configuration information.

303. The access network device sends the first MCCH to the terminal device, where the first MCCH is used to carry configuration information of at least one first multicast logical service channel MTCH, and the configuration information of the at least one first MTCH is used to configure the at least one first MTCH.

304. The terminal device receives the first MCCH from the access network device, and further obtains configuration information of the at least one first MTCH.

Optionally, the scheme includes step 305, where the access network device sends the at least one first MTCH to the terminal device.

Further optionally, the scheme includes step 306, the terminal device receiving the at least one first MTCH from the access network device.

It should be noted that, steps 301-306 are an exemplary processing procedure, in the process that the terminal device obtains the broadcast channel, the access network device sends system information to the terminal device, where the system information includes configuration information of MCCH, the MCCH is used to carry configuration information of MTCH, after the terminal device receives the system information, the terminal device obtains the configuration information of MCCH in the system information, further, receives the MCCH according to the configuration information of MCCH and obtains the MTCH configuration information carried by the MCCH, and further, the terminal device receives the MTCH according to the MTCH configuration information. The time sequence between the sending channel of the access network device and the receiving channel of the terminal device is not limited, for example, after the access network device sends the system information, the MCCH and the MTCH, the terminal device receives the system information and acquires the MCCH configuration information in the system information, acquires the configuration information of the MTCH after receiving the MCCH, and further acquires the MTCH.

The communication method provided by the embodiment of the application can be applied to the configuration flow of the MC-PTM broadcast multicast mode, so that the MC-PTM broadcast multicast mode can be operated in an NR system, and the more flexible and efficient configuration of broadcast channel resources is realized. In an NR system, a synchronization sequence block (synchronization signal and PBCH block, SSB) is composed of a primary synchronization sequence (primary synchronization signal, PSS), a secondary synchronization sequence (secondary synchronization signal, SSS) and a physical broadcast channel (physical broadcast channel, PBCH). During the process of accessing the communication system by the terminal device, at least one of the steps 3001-3003 is further included before step 301.

Step 3001, the terminal device performs time-frequency synchronization with the cell by searching PSS and SSS, and further obtains the cell identifier of the current cell.

Step 3002, the terminal device receives the PBCH of the current cell, and further obtains a cell broadcast message carried by the PBCH, where the cell broadcast message includes an initial control resource set (control resource set, core) and an initial Search Space (SS) of an initial bandwidth part (BWP), where a bandwidth area of the initial BWP is equal to a bandwidth area of the initial core. Specifically, the terminal device determines the resource positions of the initial CORESET and the initial SS according to the resource positions of the SSB and the indication information carried by the PBCH, so as to obtain the initial CORESET and the initial SS.

Step 3003, the terminal device searches the initial CORESET and the initial SS of the initial BWP for a control channel of the system information block type 1 (system information block type, sib1) to obtain SIB1, and further obtains configuration information carried by SIB1, where the configuration information includes random access configuration information and paging configuration information.

The terminal device can complete residence in the cell through steps 3001-3003, and when the service needs, the terminal device can establish an RRC connection through random access, so as to perform unicast communication with the access network device. The terminal device may also obtain configuration information of other system information (system information block, SIB) through SIB1, thereby obtaining other system information, and further, receive a broadcast data channel by performing the contents described in steps 301-306.

For step 301, the access network device sends system information to the terminal device, where the system information includes MCCH configuration information of a first multicast logical control channel, and the first MCCH configuration information is used to configure a first MCCH.

The first MCCH configuration information includes at least one of first MCCH bandwidth portion information, first MCCH control resource set information, first MCCH search space information, a first MCCH scrambling code identity and a radio network temporary identity RNTI of the first MCCH.

In a first possible implementation, the first MCCH configuration information includes first MCCH bandwidth portion information, where the first MCCH bandwidth portion information is used to configure a physical resource block occupied by the first MCCH in a frequency domain, and the access network device sends the first MCCH to the terminal device in a bandwidth area corresponding to the first MCCH bandwidth portion information.

In a second possible implementation, the first MCCH configuration information includes first MCCH control resource set information, where the first MCCH control resource set information is used to configure the number of symbols of a frequency domain subband and a time domain occupied by the first MCCH in BWP, and the access network device sends the first MCCH to the terminal device on a frequency domain resource corresponding to the first MCCH control resource set information.

In a third possible implementation, the first MCCH configuration information includes first MCCH search space information, where the first MCCH search space information is used to configure a monitoring period of the first MCCH and a specific time domain symbol occasion in a specific time slot in one period, and the access network device sends the first MCCH to the terminal device in a time domain corresponding to the first MCCH search space information.

In a fourth possible implementation, the first MCCH configuration information includes a first MCCH scrambling code identifier, where the first MCCH scrambling code identifier is used to scramble a PDSCH carrying the first MCCH. In the SC-PTM broadcast multicast mode, where the network device supports broadcast of only a single cell, the scrambling code identification in the SC-PTM transmission mode may be expressed as:

Wherein c _init Representing a scrambling code identification for scrambling the first downlink channel, q being a codeword; n is n _s For time slot identification, n _RNTI Represents a first radio network temporary identity RNTI,for cell identification. In the communication method provided by the embodiment of the present application, the access network device sends a first MCCH in a broadcast area including at least one physical cell, where when the broadcast area is one cell, the first MCCH scrambling code identifier may be a physical cell identifier of a corresponding cell, and when the broadcast area includes a plurality of cells, the first MCCH scrambling code identifier may be a virtual cell identifier unified corresponding to the plurality of cells, and the first MThe CCH scrambling code identification is different from the radio network temporary identification. The first MCCH scrambling code identification for scrambling PDSCH is configured for a plurality of cells, the plurality of cells or a plurality of beams in a broadcasting area can be scrambled by adopting a unified scrambling code identification, and in this way, signals of the plurality of cells or the plurality of beams can be combined in a physical layer, so that the signal to noise ratio is enhanced. In one possible implementation, the network device does not configure the first MCCH scrambling code identifier, or the first MCCH scrambling code identifier is configured to be a physical cell identifier of a corresponding cell, and in this scenario, the configuration flow of the MC-PTM may be simplified to SC-PTM, so as to perform unified processing.

In a fifth possible implementation, the first MCCH configuration information includes a radio network temporary identity RNTI, which is used to scramble a PDCCH, which is used to carry DCI for scheduling PDSCH.

In other possible implementations, the first MCCH configuration information includes any two, three, four or all of the above configuration information in possible scenarios based on the descriptions of the five possible implementations. For example, the first MCCH configuration information includes first MCCH bandwidth portion information, first MCCH control resource set information and first MCCH search space information, and the terminal device may determine a time domain and/or frequency domain location of a channel through at least one of the first MCCH bandwidth portion information, the first MCCH control resource set information and the first MCCH search space information, thereby receiving the first MCCH.

In one possible design, the system information further includes second MCCH configuration information for configuring a second MCCH. Further, the system information includes configuration information of a plurality of MCCHs, which is used for configuring the plurality of MCCHs, wherein the plurality of MCCHs can be used for carrying the same or different service types, so as to achieve more flexible configuration and adjustment. In one possible implementation, different traffic types are marked by different TMGIs or different RNTIs, or traffic types are identified by TMGIs or RNTIs.

For step 302, the terminal device receives system information from the access network device, and further obtains the first MCCH configuration information.

After receiving the SIB1 from the access network device, the terminal device obtains configuration information of at least one other system information SIB-x from the SIB1, further receives the at least one SIB-x from the access network device, and subsequently simplifies the representation of any one of the system information of the SIB-x in the SIB1 into the system information for convenience of representation, and further, the terminal device receives the system information from the access network device.

In a possible implementation, the system information further includes second MCCH configuration information, where the second MCCH configuration information is used to configure a second MCCH, and the terminal device obtains the second MCCH configuration information in the system information after receiving the system information from the access network device. Further, the system information includes configuration information of a plurality of MCCHs, which are respectively used for configuring a plurality of different MCCHs, and after receiving the system information, the terminal device obtains the configuration information of the plurality of MCCHs in the system information, wherein the plurality of MCCHs are used for carrying the same or different service types, so as to realize more flexible configuration and adjustment.

For step 303, the access network device sends the first MCCH to the terminal device, where the first MCCH is used to carry configuration information of at least one first multicast logical service channel MTCH, and the configuration information of the at least one first MTCH is used to configure the at least one first MTCH.

In the communication method provided by the embodiment of the present application, the first MCCH may carry configuration information of a plurality of first MTCHs, where the configuration information of the plurality of first MTCHs is used to configure the plurality of first MTCHs, where the plurality of first MTCHs correspond to the same or different service types, and in one possible implementation, the different service types are marked by different TMGIs or different RNTIs. Specifically, the access network device sends a first MCCH to a plurality of terminal devices, where the first MCCH carries configuration information of a plurality of first MTCHs, and the plurality of first MTCHs are identified by different TMGIs or different RNTIs and are used for transmitting different types of services.

Further optionally, the configuration information of the MTCH includes at least one of MTCH bandwidth part information, MTCH control resource set information, MTCH search space information, MTCH scrambling code identification, MTCH service identification set and group radio network temporary identification G-RNTI.

In a first possible implementation, the configuration information of the MTCH includes MTCH bandwidth part information, where the MTCH bandwidth part information is used to configure a physical resource block occupied by the MTCH in a frequency domain, and the access network device sends the MTCH to the terminal device in a bandwidth area corresponding to the MTCH bandwidth part information.

In a second possible implementation, the configuration information of the MTCH includes MTCH control resource set information, where the MTCH control resource set information is used to configure the number of symbols of a frequency domain subband and a time domain occupied by the MTCH in BWP, and the access network device sends the MTCH to the terminal device on a frequency domain resource corresponding to the MTCH control resource set information.

In a third possible implementation, the configuration information of the MTCH includes MTCH search space information, where the MTCH search space information is used to configure a monitoring period of the MTCH and a specific time domain symbol opportunity in a specific time slot in one period, and the access network device sends the MTCH to the terminal device in a time domain corresponding to the MTCH search space information.

The terminal device may receive the MTCH through at least one of MTCH bandwidth part information, MTCH control resource set information and MTCH control resource set information.

In a fourth possible implementation, the configuration information of the MTCH includes an MTCH scrambling code identifier, where the MTCH scrambling code identifier is used to scramble a PDSCH carrying the MTCH. In the communication method provided by the embodiment of the present application, the access network device sends the MTCH in a broadcast area including at least one physical cell, where when the broadcast area is one cell, the MTCH scrambling code identifier may be a physical cell identifier of a corresponding cell, and when the broadcast area includes a plurality of cells, the MTCH scrambling code identifier may be a virtual cell identifier unified corresponding to the plurality of cells, different from a radio network temporary identifier. Configuring the MTCH scrambling code identification of the scrambling PDSCH for a plurality of cells can scramble a plurality of cells or a plurality of beams in a broadcast area by adopting a uniform scrambling code identification, and in this way, signals of the plurality of cells or the plurality of beams can be combined in a physical layer, thereby enhancing signal-to-noise ratio. It should be noted that, the scrambling code identifier of the first MTCH and the first MCCH scrambling code identifier are mutually independent identifiers configured by the access network device.

In a fifth possible implementation, the configuration information of the MTCH includes an MTCH service identifier set, where the MTCH service identifier set includes at least one MTCH service identifier, and the MTCH service identifier is used to distinguish different service data types. Alternatively, the traffic type is represented by a temporary mobile group identity (temporary mobile group identity, TMGI), and data of different traffic types may be marked with different TMGIs. Specifically, the access network device may send multicast service channels to a plurality of terminal devices, where different multicast services may configure different TMGI identifiers, and the terminal devices may differentiate different services through the TMGI, so that the access network device may notify a group of terminal devices through the TMGI identifiers, instead of notifying only one terminal device, which may effectively prevent a radio interface from blocking when sending paging data, and improve a resource utilization of the communication system.

In a sixth possible implementation, the MTCH configuration information includes a group radio network temporary identity G-RNTI, which is used to scramble a PDCCH, which is used to carry DCI for scheduling PDSCH.

In other possible implementations, the first MCCH configuration information includes any two, three, four, five or all of the above configuration information in possible scenarios based on the descriptions of the six possible implementations above. For example, the MTCH configuration information includes MTCH bandwidth part information, MTCH control resource set information, and the terminal device may determine a time domain and a frequency domain position of a channel through at least one of the MTCH bandwidth part information, the MTCH control resource set information, and thus receive the MTCH.

In the communication method provided by the embodiment of the application, the system information includes configuration information of at least one MCCH, and the configuration information of the at least one MCCH is used for configuring different MCCHs.

In a first possible implementation, the system information includes configuration information of a first MCCH, where the first MCCH is used to carry configuration information of at least one first multicast logical traffic channel MTCH, and the configuration information of the at least one first MTCH is used to configure the at least one first MTCH. The configuration information of the at least one first MTCH includes first MTCH configuration information and second MTCH configuration information, both of which are carried by a first MCCH. The first MTCH configuration information and the second MTCH configuration information correspond to the same or different service types.

Further, the configuration information of the at least one first MTCH may include configuration information of a plurality of first MTCHs, which are used to configure the plurality of first MTCHs, not limited to the first MTCH configuration information and the second MTCH configuration information. Optionally, multiple MTCHs may correspond to different traffic types to achieve more flexible configuration and adjustment. Further, data of different traffic types may be marked with different traffic identities, e.g. TMGI and/or RNTI, belonging to the MTCH traffic identity set, the definition of which may be referred to in the above description. In a first possible implementation, the access network device may configure different MTCH configuration information for different types of traffic. For example, the system information includes configuration information of only one MCCH, which is first MCCH configuration information, where the first MCCH configuration information is used for configuring the first MCCH, information carried by the first MCCH includes configuration information of two MTCHs, which are respectively used for configuring the first MTCH and the second MTCH, where the configuration information of the first MTCH further includes a traffic marking TMGI1, and the configuration information of the second MTCH further includes a traffic marking TMGI2, and then the first MTCH and the second MTCH are used for carrying different types of traffic, and correspond to TMGI1 and TMGI2 respectively. In another possible implementation, the service identifier set includes at least one service identifier, the service types corresponding to at least one service identifier in the same service identifier set belong to the same service set, and the access network device may configure different MTCH configuration information for services in different service sets. For example, the system information only includes configuration information of one MCCH, which is first MCCH configuration information, where the first MCCH configuration information is used for configuring the first MCCH, information carried by the first MCCH includes configuration information of two MTCHs, which are respectively used for configuring the first MTCH and the second MTCH, where the configuration information of the first MTCH includes TMGI group 1, and the TMGI group 1 includes at least one TMGI, and then at least one service carried by the first MTCH belongs to service set 1; the configuration information of the second MTCH further includes a service flag TMGI group 2, where the TMGI group 2 includes at least one TMGI, and a service carried by the second MTCH belongs to the service set 2. By the communication method provided by the embodiment of the application, the access network equipment can respectively transmit the same or different types of services through at least one MTCH, and can also respectively transmit the services of different service groups through at least one MTCH, so that the channel is flexibly configured by combining the requirements of the terminal equipment on the different services, and the communication system configuration which is convenient to configure and supports dynamic adjustment is realized.

In a second possible implementation, the system information further includes second MCCH configuration information, where the second MCCH configuration information is used to configure a second MCCH. Further, the system information includes configuration information of a plurality of MCCHs, which is not limited to the first MCCH configuration information and the second MCCH configuration information, and the configuration information of the plurality of MCCHs is used for configuring different MCCHs, and the plurality of MCCHs may be used for carrying the same or different service types, so as to achieve more flexible configuration and adjustment. Further optionally, the configuration information of the at least one first MTCH includes first MTCH common configuration information, where the first MTCH common configuration information is configuration information for configuring the at least one first MTCH, and it may be understood that the first MTCH common configuration information is common configuration information, and at least one of the at least one first MTCH is configured through the first MTCH common configuration information, or the at least one first MTCH is configured through the first MTCH common configuration information.

It may be understood that the system information includes configuration information of at least one MCCH, information carried by each MCCH includes configuration information of at least one MTCH, the configuration information of the MTCH includes common configuration information of the MTCH, and multiple MTCHs configured by the same MCCH share the common configuration information of the MTCH.

For simplicity and convenience of description, the following description will take a first MCCH as an example, and in a possible implementation, other MCCHs also have the same features: the first MCCH is used to carry configuration information of at least one first MTCH, the configuration information of the at least one first MTCH includes first MTCH common configuration information, the first MTCH common configuration information is used to configure configuration information of the at least one first MTCH common to the at least one first MTCH, for example, the first MCCH configuration information includes first MTCH common configuration information and configuration information of a first MTCH (C), the configuration information carried by the first MCCH is used to configure three first MTCHs, namely, a first MTCH (a), a first MTCH (B) and a first MTCH (C), the first MTCH common configuration information is used to configure a first MTCH (a) and a first MTCH (B), and the configuration information of the first MTCH (C) is used to configure a first MTCH (C). Optionally, the first MCCH configuration information further includes private configuration information of the first MTCH (a) for configuring parameters of the first MTCH (a) other than the public configuration information.

Specifically, the first MTCH common configuration information includes at least one of MTCH bandwidth part information, MTCH control resource set information, MTCH search space information, and MTCH scrambling code identification. The plurality of first MTCHs carrying the same or similar service data can simplify the configuration flow by sharing the common configuration information, and improve the operation efficiency of the communication system. Optionally, the configuration information of the first MTCH includes a G-RNTI in addition to the common configuration information of the first MTCH. For example, to distinguish between multiple first MTCHs, different G-RNTIs may be configured for different MTCHs, with the G-RNTIs being used to scramble PDCCHs scheduling PDSCH for carrying the MTCHs.

In a scenario where the system information includes second MCCH configuration information, the second MCCH is used to carry second MTCH common configuration information, which is configuration information common to the at least one first MTCH for configuring at least one second MTCH. Further, the system information includes configuration information of a plurality of MCCHs, the configuration information of the plurality of MCCHs is used for configuring different MCCHs, the plurality of MCCHs is used for carrying corresponding at least one MTCH public configuration information, and the public configuration information is configuration information for configuring the corresponding at least one MTCH.

According to the communication method provided by the embodiment of the application, the access network equipment can transmit different types of services through at least one MCCH, wherein each MCCH can bear the configuration information of at least one MTCH, the configuration information of the MTCH comprises public configuration information, the public configuration information is used for configuring at least one MTCH configured by the MCCH, and through the configuration method, the access network equipment can perform unified configuration on at least one MTCH configured by the same MCCH, so that the configuration flow is simplified, and the operation efficiency of a communication system is improved.

In a scenario where the system information includes second MCCH configuration information, in one possible design, the first MCCH belongs to a first MCCH set and the second MCCH belongs to a second MCCH set. The first MCCH set includes at least one first MCCH, and the system information includes a first MCCH common configuration information configuration, and the first MCCH common configuration information configuration is used for configuring the at least one first MCCH. Specifically, for MCCH carrying the same or different types of service data, MCCH common configuration information may be configured, and in order to meet different time delays required by different types of service data in the communication system, different types of services may be categorized into different MCCH sets. For example, at least one first MCCH in the first MCCH set is used for carrying a service requiring low latency guarantee, at least one second MCCH in the second MCCH set is used for carrying a service requiring no low latency guarantee, then the search space information in the first MCCH common configuration information needs to be configured as a short monitoring period, at least one first MCCH in the first MCCH set is configured by the search space information of the short monitoring period, and the search space information in the second MCCH common configuration information does not need to be configured as a short monitoring period. The method provided by the embodiment of the application can configure common configuration information for the MCCH carrying the same or same type of service so as to simplify service configuration and improve the operation efficiency of a communication system.

In one possible design, the configuration information of the at least one first MTCH and the at least one parameter included in the first MCCH configuration information have the same parameter value. The at least one parameter includes at least one of MTCH bandwidth part information, MTCH control resource set information, MTCH search space information, and MTCH scrambling code identification. Specifically, the MTCH bandwidth part information, the MTCH control resource set information, and at least one parameter of the MTCH search space information and the MTCH scrambling code identifier in the configuration information of the at least one first MTCH are the same as the parameter value of the parameter of the corresponding function in the first MCCH configuration information. In a possible implementation, the access network device instructs the terminal device to receive at least one first MTCH according to the first MCCH configuration information through the indication information, specifically, the access network device sends a first indication field to the terminal device, where the first indication field is used to indicate MTCH bandwidth part information in the configuration information of the at least one first MTCH, MTCH control resource set information, MTCH search space information, at least one parameter in an MTCH scrambling code identifier is the same as a parameter value of a corresponding parameter in the first MCCH configuration information, and the first indication field and the MTCH configuration information may be configured through the same or different broadcast messages, or may be the same or different cells (information element, IE) in the same broadcast message, where an embodiment of the present application is not limited. In another possible implementation, the configuration information of the at least one first MTCH and the parameters of the corresponding function in the first MCCH configuration information have a implicit rule, and in particular, the configuration information of the at least one first MTCH and the first MCCH configuration information have an inherited relationship preset by a network device or predefined by a communication standard. For example, the access network device may implicitly instruct the terminal device to receive the at least one first MTCH according to the first MCCH bandwidth portion information in the first MCCH configuration information by excluding the MTCH bandwidth portion information in the configuration information of the at least one first MTCH. It should be noted that the relationship between the first MCCH configuration information and the at least one first MTCH is only an exemplary illustration, and in a possible design, the system information includes at least one MCCH having the above features. By the communication method provided by the embodiment of the application, when the MCCH and at least one MTCH configured by the MCCH have the configuration parameters with the same function, the access network equipment can instruct the terminal equipment to receive the corresponding MTCH according to the at least one configuration parameter of the MCCH, thereby simplifying the configuration flow of the MTCH and improving the operation efficiency of a communication system.

For step 304, the terminal device receives the first MCCH from the access network device, and further obtains configuration information of the at least one first MTCH.

And after receiving the system information, the terminal equipment receives the first MCCH from the access network equipment according to first MCCH configuration information in the system information, wherein the information carried by the first MCCH comprises at least one piece of configuration information of a first MTCH. Specifically, the first MCCH configuration information includes at least one of first MCCH bandwidth portion information, first MCCH control resource set information, first MCCH search space information, a first MCCH scrambling code identifier and a radio network temporary identifier RNTI of the first MCCH. The first MCCH bandwidth portion information, the first MCCH control resource set information, the first MCCH search space information, the first MCCH scrambling code identifier and the meaning of the RNTI of the first MCCH may refer to the related description in step 301.

For the first MCCH bandwidth portion information, in a possible implementation, the first MCCH configuration information includes first MCCH bandwidth portion information, and the terminal device receives the first MCCH according to the first MCCH bandwidth portion information. For example, the first MCCH configuration information includes first MCCH bandwidth portion information, the first MCCH bandwidth portion information configures a bandwidth area of the first MCCH to be BWP1, and the terminal device receives the first MCCH according to the BWP 1. In another possible implementation, the terminal device receives a first MCCH according to an initial bandwidth portion BWP, the initial BWP being used for scheduling the system information, optionally, the first MCCH configuration information includes at least one of first MCCH control resource set information, first MCCH search space information, a first MCCH scrambling code identity and a radio network temporary identity RNTI of the first MCCH, and does not include the first MCCH bandwidth portion information. For example, the system information is scheduled by an initial bandwidth portion BWP0, the first MCCH configuration information does not include the first MCCH bandwidth portion information, and the terminal device receives the first MCCH in a bandwidth region corresponding to the BWP 0.

For the first MCCH control resource set information, in a possible implementation, the first MCCH configuration information includes first MCCH control resource set information, and the terminal device receives the first MCCH according to the first MCCH control resource set information. For example, the first MCCH configuration information includes first MCCH control resource set information, the first MCCH control resource set information configures frequency domain resources of the first MCCH to CORESET1, CORESET1 corresponds to the 1 st RB on the BWP, and the terminal device receives the first MCCH at the 1 st RB on the BWP. In another possible implementation, the terminal device receives a first MCCH according to one of an initial control resource set CORESET, a paging CORESET, and a random access channel RACH response CORESET, the initial CORESET being used to schedule the system information; the paging CORESET is used for scheduling paging channels, the paging channels are PDSCH carrying paging messages, the PDCCH for scheduling the paging channels is sent in the paging CORESET, and in a possible design, the PDCCH for scheduling the paging channels is also used for carrying other information, and/or the paging CORESET is also used for scheduling other channels; the RACH response CORESET is used for scheduling RACH response channels, which are PDSCH carrying response messages of RACH, and the PDCCH for scheduling the RACH response channels is sent in the RACH response CORESET, and in a possible design, the PDCCH for scheduling the RACH response channels is also used for carrying other data, and/or the RACH response CORESET is also used for scheduling other channels. Optionally, the first MCCH configuration information includes at least one of first MCCH bandwidth portion information, first MCCH search space information, a first MCCH scrambling code identifier and a radio network temporary identifier RNTI of the first MCCH, and does not include the first MCCH control resource set information. For example, the system information is scheduled by an initial control resource set coreset#0, and the first MCCH configuration information does not include the first MCCH control resource set information, and then the terminal device receives the first MCCH on the frequency domain resource corresponding to coreset#0.

For the first MCCH search space information, in one possible implementation, the first MCCH configuration information includes first MCCH search space information, in which case the terminal device receives the first MCCH according to the first MCCH search space information. For example, a terminal device receives system information from an access network device, the system information including first MCCH configuration information including first MCCH bandwidth portion information, first MCCH control resource set information and first MCCH search space information. The first MCCH bandwidth portion information configures BWP0 as a bandwidth area of the terminal device, the first MCCH control resource set information configures CORESET of the terminal device to occupy first and second RBs in BWP0, the first MCCH search space information configures a monitoring period of the terminal device to be 5 slots, monitoring in a 2 nd slot of every 5 slots, and searching for MCCHs in the first and second RB areas of BWP0 when the terminal device monitors in the 2 nd slot of every 5 slots. In another possible implementation, the terminal device receives a first MCCH according to an initial search space SS, one of the paging SS and the RACH response SS, the initial SS being used to schedule the system information; the paging SS is used for scheduling a paging channel, the paging channel is a PDSCH carrying paging information, PDCCH of the paging channel is scheduled to be sent in the paging SS, and in a possible design, the PDCCH of the paging channel is scheduled to be used for carrying other data, and/or the paging SS is also used for scheduling other channels; the RACH response SS is configured to schedule RACH response channels, which are PDSCH carrying response messages of RACH, and to schedule PDCCHs of the RACH response channels to be transmitted within the RACH response SS, and in a possible design, to schedule PDCCHs of the RACH response channels to be used for carrying other data, and/or to schedule other channels. Optionally, the first MCCH configuration information includes at least one of first MCCH bandwidth portion information, first MCCH control resource set information, a first MCCH scrambling code identifier and a radio network temporary identifier RNTI of the first MCCH, and does not include the first MCCH search space information. For example, ss#0 is an SS for receiving a PDCCH for scheduling SIB1, the first MCCH configuration information does not include first MCCH search space information, and the terminal device receives the first MCCH according to ss#0.

In one possible implementation, the first MCCH scrambling code identifier is used for scrambling a PDSCH carrying the first MCCH, and in a scenario in which the first MCCH configuration information includes the first MCCH scrambling code identifier, after receiving the system information, the terminal device obtains the first MCCH configuration information in the system information, and further obtains the first MCCH scrambling code identifier, and the terminal device receives the PDSCH according to the first MCCH scrambling code identifier, and further obtains the first MCCH carried by the PDSCH.

For the radio network temporary identifier RNTI, in one possible implementation, the first MCCH configuration information includes an RNTI, the terminal device receives the first MCCH according to the RNTI, specifically, the RNTI is used for scrambling the PDCCH, and the terminal device receives the PDCCH according to the RNTI, thereby obtaining a PDSCH scheduled by the PDCCH, and further obtaining the first MCCH carried by the PDSCH.

After receiving the first MCCH from the access network device, the terminal device acquires configuration information of at least one first MTCH carried by the first MCCH, where the configuration information of the at least one first MTCH is used to configure the at least one first MTCH.

For step 305, the access network device sends the at least one first MTCH to the terminal device.

The first MCCH is configured to carry configuration information of at least one first MTCH, where the configuration information of the at least one first MTCH is configured to configure at least one first MTCH, and the configuration information of the at least one first MTCH includes first MTCH configuration information and second MTCH configuration information, where the first MTCH configuration information and the second MTCH configuration information correspond to different service types. The access network device can bear different services through at least one MTCH, so that flexible configuration of different service channels is realized.

Optionally, the service types are indicated by TMGIs, and data of different service types may be marked with different TMGIs, and for the same or same type of service, may be divided into the same service identification group, and carried by the same MTCH or the same group of MTCHs, where the same group of MTCHs may be configured by the MTCH common configuration information, and the definition of the MTCH common configuration information may refer to the related description in step 304. Specifically, different multicast services may be configured with different TMGI identities, and the same type of service may be configured with the same TMGI group through the TMGI identity. By the method provided by the embodiment of the application, the access network equipment can inform a group of terminal equipment instead of only informing one terminal equipment, so that the wireless interface can be effectively prevented from being blocked when paging data is sent, and the resource utilization rate of a communication system is improved.

For step 306, the terminal device receives the at least one first MTCH from the access network device.

After receiving the MCCH, the terminal equipment acquires configuration information of at least one first MTCH carried by the MCCH, and receives the at least one first MTCH according to the configuration information of the at least one first MTCH. The configuration information of the at least one first MTCH includes third MTCH configuration information, where the third MTCH configuration information is used to configure a third MTCH, and it should be noted that the third MTCH is one of the at least one first MTCH and is configured through configuration information carried by the first MTCH. The configuration information of the MTCH includes at least one of MTCH bandwidth part information, MTCH control resource set information, MTCH search space information, MTCH scrambling code identification, MTCH service identification set and group radio network temporary identification G-RNTI. The MTCH bandwidth part information, the MTCH control resource set information, the MTCH search space information, the MTCH scrambling code identifier, the MTCH service identifier set and the G-RNTI definition may refer to the relevant description in step 303.

For the MTCH bandwidth part information, in a first possible implementation, the third MTCH configuration information includes third MTCH bandwidth part information, and in this scenario, the terminal device receives the third MTCH according to the third MTCH bandwidth part information. For example, in a second possible implementation, the terminal device receives a third MTCH according to an initial bandwidth part BWP, where the initial BWP is used for scheduling the system information, and optionally, the third MTCH configuration information includes at least one of MTCH control resource set information, MTCH search space information, MTCH scrambling code identification, MTCH service identification set, and group radio network temporary identification G-RNTI, and does not include MTCH bandwidth part information. In a third possible implementation, the terminal device receives a third MTCH according to the first MCCH bandwidth portion information, where the definition of the first MCCH bandwidth portion information may refer to the related description in step 305, and optionally, the third MTCH configuration information includes at least one of MTCH control resource set information, MTCH search space information, MTCH scrambling code identification, MTCH service identification set and group radio network temporary identification G-RNTI, and does not include MTCH bandwidth portion information.

For the MTCH control resource set information, in a first possible implementation, the third MTCH configuration information includes third MTCH control resource set information, and in this scenario, the terminal device receives the third MTCH according to the third MTCH control resource set information. In a second possible implementation, the terminal device receives a third MTCH according to one of an initial control resource set CORESET, a paging CORESET, and a random access channel RACH response CORESET, where the initial CORESET is used to schedule the system information; the paging CORESET is used for scheduling paging channels, the paging channels are PDSCH carrying paging messages, the PDCCH for scheduling the paging channels is sent in the paging CORESET, and in a possible design, the PDCCH for scheduling the paging channels is also used for carrying other data, and/or the paging CORESET is also used for scheduling other channels; the RACH response CORESET is used for scheduling RACH response channels, which are PDSCH carrying response messages of RACH, and the PDCCH for scheduling the RACH response channels is sent in the RACH response CORESET, and in a possible design, the PDCCH for scheduling the RACH response channels is also used for carrying other data, and/or the RACH response CORESET is also used for scheduling other channels. Optionally, the third MTCH configuration information includes at least one of MTCH bandwidth part information, MTCH search space information, MTCH scrambling code identification, MTCH service identification set and group radio network temporary identification G-RNTI, and does not include MTCH control resource set information. In a third possible implementation, the terminal device receives a third MTCH according to the first MCCH control resource set information, where the definition of the first MCCH control resource set information may refer to the related description in step 305, and optionally, the third MTCH configuration information includes at least one of MTCH bandwidth part information, MTCH search space information, MTCH scrambling code identification, MTCH service identification set and group radio network temporary identification G-RNTI, and does not include MTCH control resource set information.

For the MTCH search space information, in a first possible implementation, the third MTCH configuration information includes third MTCH search space information, and in this scenario, the terminal device receives the third MTCH according to the third MTCH search space information. In a second possible implementation, the terminal device receives a third MTCH according to one of an initial search space SS, a paging SS, and a RACH response SS, the initial SS being used to schedule the system information; the paging SS is used for scheduling a paging channel, the paging channel is a PDSCH carrying paging information, PDCCH of the paging channel is scheduled to be sent in the paging SS, and in a possible design, the PDCCH of the paging channel is scheduled to be used for carrying other data, and/or the paging SS is also used for scheduling other channels; the RACH response SS is configured to schedule RACH response channels, which are PDSCH carrying response messages of RACH, and to schedule PDCCHs of the RACH response channels to be transmitted within the RACH response SS, and in a possible design, to schedule PDCCHs of the RACH response channels to be used for carrying other data, and/or to schedule other channels. Optionally, the third MTCH configuration information includes at least one of MTCH bandwidth part information, MTCH control resource set information, MTCH scrambling code identification, MTCH service identification set and group radio network temporary identification G-RNTI, and does not include MTCH search space information. In a third possible implementation, the terminal device receives a third MTCH according to the first MCCH search space information, where the definition of the first MTCH search space information may refer to the related description in step 305, and optionally, the third MTCH configuration information includes at least one of MTCH bandwidth part information, MTCH control resource set information, MTCH scrambling code identifier, MTCH service identifier set and group radio network temporary identifier G-RNTI, and does not include MTCH search space information.

In a first possible implementation, the MTCH scrambling code identifier is used for scrambling a PDSCH carrying the MTCH, and the configuration information of the third MTCH includes a third MTCH scrambling code identifier, and after receiving the first MCCH, the terminal device obtains the configuration information of the third MTCH carried by the first MCCH, receives the PDSCH according to the third MTCH scrambling code identifier, and further obtains the third MTCH carried by the PDSCH. In a second possible implementation, the terminal device receives a third MTCH according to the first MCCH scrambling code identifier, and optionally, the configuration information of the third MTCH includes at least one of MTCH bandwidth part information, MTCH control resource set information, MTCH search space information, an MTCH service identifier set and a group radio network temporary identifier G-RNTI, and does not include an MTCH scrambling code identifier.

The G-RNTI is used for scrambling a PDCCH, the PDCCH is used for carrying DCI for scheduling PDSCH, in one possible implementation, the configuration information of the third MTCH includes the G-RNTI, and the terminal device receives the PDCCH according to the G-RNTI, thereby obtaining the PDSCH scheduled by the PDCCH, and further obtaining the third MTCH carried by the PDSCH.

The set of MTCH service identities includes at least one MTCH service identity that is used to distinguish between different service data types. Data of different traffic types may be marked with different traffic identities and may be divided into the same set of traffic identities for the same or the same type of traffic. Optionally, the service identifier is TMGI or RNTI.

For the correspondence between service identifiers and MTCHs, in one possible implementation, the at least one MTCH is configured to carry data of different service types, and specifically, the G-RNTI corresponds to the service identifiers one by one. For example, the G-RNTI1 corresponds to the TMGI1, and the terminal device detects the PDCCH carrying the MTCH through the G-RNTI1, so as to obtain the MTCH carried by the PDSCH scheduled by the PDCCH, where the service carried by the MTCH corresponds to the TMGI1.

For the correspondence between service identifiers and MTCHs, in a second possible implementation, the at least one MTCH is configured to carry data of different service identifier sets, specifically, a service identifier set corresponds to a G-RNTI, and the G-RNTI corresponds to at least one service identifier in the service identifier set. For example, the TMGI group includes three service identifiers, which are respectively TMGI1, TMGI2, and TMGI3, where the TMGI group corresponds to G-RNTI1, and the terminal device obtains a corresponding MTCH according to the G-RNTI1, where the service carried by the MTCH corresponds to TMGI1, TMGI2, and TMGI3.

In one possible design, at least one MTCH corresponding to a different service identity or set of service identities is configured by MTCH common configuration information, which may further inherit corresponding MCCH configuration information. The definition of the MTCH common configuration information may refer to the related description in step 303, specifically, the access network device may configure multiple MTCHs through the MTCH common configuration information, where the multiple MTCHs correspond to different TMGIs or TMGI groups, so as to implement unified configuration of channels carrying multiple services, simplify a configuration flow of a communication system, and improve operation efficiency.

It should be noted that the third MTCH is one of the at least one first MTCH, and is merely an exemplary illustration, and any MTCH of the at least one first MTCH may have the above features in a possible design. In one possible implementation, the configuration information of the at least one first MTCH includes first MTCH configuration information and second MTCH configuration information, the first MTCH configuration information and the second MTCH configuration information corresponding to different traffic types, and the third MTCH may be equal to the first MTCH or the second MTCH. It may be understood that the plurality of MTCH configuration information carried by the first MCCH includes at least one of MTCH bandwidth part information, MTCH control resource set information, MTCH search space information, MTCH scrambling code identifier, MTCH service identifier set and group radio network temporary identifier G-RNTI, and different services may be respectively transmitted through the plurality of MTCHs by configuring configuration information corresponding to different service types for the plurality of MTCHs, thereby implementing flexible configuration of the broadcast system. In another possible implementation, the configuration information of the at least one first MTCH includes first MTCH common configuration information that is configuration information common to the at least one first MTCH for configuring the at least one first MTCH, wherein the at least one first MTCH includes the third MTCH. Specifically, the plurality of MTCH configuration information carried by the first MCCH includes common configuration information, where the common configuration information is used to configure the plurality of MTCHs, so that the access network device can implement unified configuration of the plurality of MTCHs configured by the first MCCH, simplify a configuration flow, and promote operation efficiency of the communication system.

The exemplary processing procedures provided in steps 301-306 may be applied to a broadcast multicast transmission mode, and by using the method provided in the embodiment of the present application, the access network device may transmit different types of services through at least one MCCH and at least one MTCH configured by each MCCH, so as to flexibly configure channels in combination with requirements of the terminal device for the different types of services. The terminal equipment receives the corresponding channels according to configuration parameters such as the configuration information bandwidth part information of the MCCH and the MTCH, the control resource set information, the search space information, the scrambling code identification and the like, wherein for a plurality of MTCHs configured by a certain MCCH, the access network equipment can configure the plurality of MTCHs through common configuration information, so that the configuration flow is simplified, and the operation efficiency of a communication system is improved. Further, in a possible design, the terminal device may receive the MCCH and the MTCH according to the scheduling parameters of the corresponding system information or the configuration information predefined by the standard, or may receive the MTCH according to the configuration information of the corresponding MCCH, thereby improving the operation efficiency through a simplified configuration method.

Through the steps, the embodiment of the application provides a more flexible and efficient broadcast channel configuration method, and the method enables the MC-PTM broadcast multicast mode to be realized. The MC-PTM transmission mode has the beneficial effects that: compared with the SC-PTM broadcast multicast mode which only supports a single cell, the MC-PTM broadcast multicast mode supports transmitting data channels in a plurality of cells at the same time, the coverage area of the plurality of cells is larger than that of the single cell, and further the probability that a plurality of UE receives the same type of service in the MC-PTM transmission mode is higher than that of the SC-PTM mode, when network equipment simultaneously transmits the same type of service to the plurality of cells, better mobility support can be provided, and when terminal equipment is switched between different cells, good service continuity can be kept, and channels can be transmitted with higher signal to noise ratio by adopting an SFN mode. Compared with the large-area static planning of the MBSFN broadcasting mode, the MC-PTM broadcasting mode can be dynamically planned and configured according to the position of the UE and the service requirement, so that the configuration of the broadcasting area is more flexible, and the dynamic scheduling can be realized.

The scheme provided by the embodiment of the invention is mainly introduced from the interaction angle among the network elements. It will be appreciated that each network element, e.g. access network device, terminal device, etc., in order to implement the above-mentioned functions, comprises corresponding hardware structures and/or software modules for performing each function. Those of skill in the art will readily appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as hardware or combinations of hardware and computer software. Whether a function is implemented as hardware or computer software driven hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.

When the above network elements or modules are implemented in hardware, the hardware may be any one or any combination of a CPU, microprocessor, DSP, MCU, artificial intelligence processor, ASIC, soC, FPGA, PLD, special purpose digital circuitry, hardware accelerator, or non-integrated discrete devices that may run the necessary software or that do not rely on software to perform the above method flows.

The apparatus for implementing the above method in the embodiment of the present application is described below with reference to the accompanying drawings. Therefore, the above contents can be used in the subsequent embodiments, and repeated contents are not repeated.

Fig. 4 is a schematic block diagram of an apparatus 400 according to an embodiment of the present application. The communication device 400 is illustratively a terminal device 400. The terminal device 400 comprises a processing module 401 and a transceiver module 402. Wherein the processing module 401 may be configured to perform all operations performed by the terminal device in the embodiment shown in fig. 3, except for the transceiving operations, for example, the terminal device obtaining the first MCCH configuration information according to system information, and obtaining the configuration information of the at least one first MTCH according to the first MCCH, and/or other procedures for supporting the techniques described herein. Transceiver module 401 may be used to perform all of the transceiving operations performed by the terminal device in the embodiment illustrated in fig. 3, such as the communication methods described in at least one of steps 302, 304, and 306, and/or other processes for supporting the techniques described herein.

A transceiver module 402, configured to receive system information from an access network device, where the system information includes first MCCH configuration information of a multicast logical control channel, and the first MCCH configuration information is used to configure a first MCCH; for receiving the first MCCH from the access network device, the first MCCH being for carrying configuration information of at least one first multicast logical traffic channel MTCH, the configuration information of the at least one first MTCH being for configuring the at least one first MTCH; for receiving said at least one first MTCH from said access network device.

A processing module 401, configured to obtain the first MCCH configuration information in the system information after the transceiver module 402 receives the system information; after receiving the first MCCH, configuration information of the at least one first MTCH is acquired.

It should be appreciated that the processing module 401 in embodiments of the present application may be implemented by a processor or processor-related circuit component, and the transceiver module 402 may be implemented by a transceiver or transceiver-related circuit component.

As shown in fig. 5, an embodiment of the present application further provides a communication device 500. The communication device 500 is illustratively a terminal device 500. The terminal device 500 comprises a processor 501, a memory 502 and a transceiver 503, wherein the memory 502 stores instructions or programs, and the processor 501 is configured to execute the instructions or programs stored in the memory 502. When executed, the processor 501 is configured to perform the operations performed by the processing module 401 in the above embodiment, and the transceiver 503 is configured to perform the operations performed by the transceiver module 402 in the above embodiment.

It should be understood that the terminal device 400 or the terminal device 500 according to the embodiment of the present application may correspond to the terminal device in the embodiment shown in fig. 3, and the operations and/or functions of the respective modules in the terminal device 400 or the terminal device 500 are respectively for implementing the corresponding procedures in the embodiment shown in fig. 3, and are not repeated herein for brevity.

Fig. 6 is a schematic block diagram of a communication device 600 provided by an embodiment of the present application. The communication device 600 is illustratively an access network device 600. The access network device 600 comprises a processing module 601 and a transceiver module 602. Wherein the processing module 601 may be configured to perform all operations performed by the access network device in the embodiment shown in fig. 3, except for transceiving operations, and/or other procedures for supporting the techniques described herein. Transceiver module 602 may be configured to perform all of the transceiving operations performed by the access network device in the embodiment illustrated in fig. 3, such as the communication methods described in at least one of steps 301, 303, and 305, and/or other processes for supporting the techniques described herein.

A transceiver module 602, configured to send system information to a terminal device, where the system information includes first MCCH configuration information of a first multicast logical control channel, where the first MCCH configuration information is used to configure a first MCCH; transmitting the first MCCH to the terminal equipment, wherein the first MCCH is used for bearing configuration information of at least one first multicast logical traffic channel MTCH, and the configuration information of the at least one first MTCH is used for configuring the at least one first MTCH; and transmitting the at least one first MTCH to the terminal equipment.

It is to be appreciated that the processing module 601 in embodiments of the present application may be implemented by a processor or processor-related circuit component, and the transceiver module 602 may be implemented by a transceiver or transceiver-related circuit component.

As shown in fig. 7, the embodiment of the application further provides a communication device 700. The communication device 700 is illustratively an access network device 700. The access network device 700 comprises a processor 701, a memory 702 and a transceiver 703, wherein the memory 702 stores instructions or programs, and the processor 701 is configured to execute the instructions or programs stored in the memory 702. When the instructions or the programs stored in the memory 702 are executed, the processor 701 is configured to perform the operations performed by the processing module 601 in the above embodiment, and the transceiver 703 is configured to perform the operations performed by the transceiver module 602 in the above embodiment.

It should be understood that the access network device 600 or the access network device 700 according to the embodiment of the present application may correspond to the access network device in the embodiment shown in fig. 3, and the operations and/or functions of the respective modules in the access network device 600 or the access network device 700 are respectively for implementing the corresponding procedures in the embodiment shown in fig. 3, and are not repeated herein for brevity.

The embodiment of the application also provides a communication device which can be the terminal equipment or the device in the terminal equipment, such as an integrated circuit or a chip. The communication means may be adapted to perform the actions performed by the terminal device in the method embodiment shown in fig. 3 described above.

Fig. 8 shows a simplified schematic diagram of the structure of a terminal device when the communication device is a terminal device. The terminal device is illustrated as a mobile phone in fig. 8, which is convenient for understanding and illustration. As shown in fig. 8, the terminal device includes a processor, a memory, a radio frequency circuit, an antenna, and an input-output device. The processor is mainly used for processing communication protocols and communication data, controlling the terminal equipment, executing software programs, processing data of the software programs and the like. The memory is mainly used for storing software programs and data. The radio frequency circuit is mainly used for converting a baseband signal and a radio frequency signal and processing the radio frequency signal. The antenna is mainly used for receiving and transmitting radio frequency signals in the form of electromagnetic waves. Input and output devices, such as touch screens, display screens, keyboards, etc., are mainly used for receiving data input by a user and outputting data to the user. It should be noted that some kinds of terminal apparatuses may not have an input/output device.

When data need to be sent, the processor carries out baseband processing on the data to be sent and then outputs a baseband signal to the radio frequency circuit, and the radio frequency circuit carries out radio frequency processing on the baseband signal and then sends the radio frequency signal outwards in the form of electromagnetic waves through the antenna. When data is sent to the terminal equipment, the radio frequency circuit receives a radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor, and the processor converts the baseband signal into data and processes the data. For ease of illustration, only one memory and processor is shown in fig. 8. In an actual end device product, there may be one or more processors and one or more memories. The memory may also be referred to as a storage medium or storage device, etc. The memory may be provided separately from the processor or may be integrated with the processor, as the embodiments of the application are not limited in this respect.

In the embodiment of the application, the antenna and the radio frequency circuit with the receiving and transmitting functions can be regarded as a receiving and transmitting unit of the terminal equipment, and the processor with the processing function can be regarded as a processing unit of the terminal equipment. As shown in fig. 8, the terminal device includes a transceiving unit 801 and a processing unit 802. The transceiver unit may also be referred to as a transceiver, transceiver device, etc. The processing unit may also be called a processor, a processing board, a processing module, a processing device, etc. Alternatively, the device for implementing the receiving function in the transceiver unit 801 may be regarded as a receiving unit, and the device for implementing the transmitting function in the transceiver unit 801 may be regarded as a transmitting unit, that is, the transceiver unit 801 includes a receiving unit and a transmitting unit. The transceiver unit may also be referred to as a transceiver, transceiver circuitry, or the like. The receiving unit may also be referred to as a receiver, or receiving circuit, among others. The transmitting unit may also sometimes be referred to as a transmitter, or a transmitting circuit, etc.

It should be understood that the transceiver unit 801 is configured to perform the transmitting operation and the receiving operation on the terminal device side in the method embodiment shown in fig. 3, and the processing unit 802 is configured to perform operations other than the transceiver operation performed by the terminal device in the method embodiment shown in fig. 3.

For example, in one implementation, the transceiving unit 801 is configured to perform the terminal device-side transceiving steps, e.g., 302, 304, and 306, and/or other processes for supporting the techniques described herein in the embodiment illustrated in fig. 3. A processing unit 802, configured to perform operations on the terminal device side other than transceiving operations in the embodiment shown in fig. 3, and/or to support other procedures of the techniques described herein.

When the communication device is a chip, the chip comprises a transceiver unit and a processing unit. The receiving and transmitting unit can be an input and output circuit and a communication interface; the processing unit is an integrated processor or microprocessor or integrated circuit on the chip.

When the communication device in the embodiment of the present application is a terminal device, reference may be made to the device shown in fig. 9. As an example, the device may perform functions similar to processor 901 in fig. 9. In fig. 9, the apparatus includes a processor 901, a transmit data processor 902, and a receive data processor 903. The processing module 401 in the above embodiment may be the processor 901 in fig. 9, and perform corresponding functions; the transceiver module 402 in the above embodiment may be the transmit data processor 902 and/or the receive data processor 903 in fig. 9.

Although a channel encoder, a channel decoder are shown in fig. 9, it is to be understood that these modules are not limiting illustrations of the present embodiment, but are merely schematic.

Fig. 10 shows another form of the present embodiment. The processing device 1000 includes a modulation subsystem, a central processing subsystem, a peripheral subsystem, and the like. The communication device in this embodiment may act as a modulation subsystem therein. In particular, the modulation subsystem may include a processor 1003, an interface 1004. The processor 1003 completes the function of the processing module 401, and the interface 1004 completes the function of the transceiver module 402. As another modification, the modulation subsystem includes a memory 1006, a processor 1003, and a program stored on the memory 1006 and executable on the processor, and the processor 1003 implements the method on the terminal device side in the method embodiment shown in fig. 3, when executing the program. It is noted that the memory 1006 may be non-volatile or volatile, and may be located within the modulation subsystem or within the processing device 1000, as long as the memory 1006 is coupled to the processor 1003.

The embodiment of the application also provides a communication device which can be the access network equipment or the device in the access network equipment, such as an integrated circuit or a chip. The communication means may be adapted to perform the actions performed by the access network device in the method embodiment shown in fig. 3 described above.

When the communication apparatus is an access network device, apparatus 1100 in fig. 11 shows a simplified schematic diagram of the structure of the access network device. Fig. 11 is a schematic diagram of a hardware structure of an apparatus 1100 according to an embodiment of the present application. The apparatus 1100 includes at least one processor 1101 configured to implement the functions of the access network device provided by the embodiments of the present application. At least one communication interface 1104 may also be included in the apparatus 1100. The apparatus 1100 may also include a memory 1103 therein. Optionally, the apparatus 1100 further includes a bus 1102.

Bus 1102 may be used to transfer information between the components described above.

A communication interface 1104 for communicating with other devices or communication networks, such as ethernet, RAN, WLAN, etc. Communication interface 1104 may be an interface, circuit, transceiver, or other device capable of communicating, without limitation. A communication interface 1104 may be coupled to the processor 1101. It should be noted that, in the embodiment of the present application, when the access network device is used as a receiving end device, the transceiver may be replaced with a receiver, and when the access network device is used as a transmitting end device, the transceiver may be replaced with a transmitter. Of course, it is not excluded that the access network device has both a transmitting function and a receiving function, i.e. comprises the above-mentioned transceiver, whether the access network device is a receiving end device or a transmitting end device.

The memory 1103 is configured to store program instructions and may be controlled to execute by the processor 1101, so as to implement a communication method provided by the following embodiments of the present application. For example, the processor 1101 is configured to invoke and execute instructions stored in the memory 1103, thereby implementing a communication method provided by the embodiments of the present application described below.

In the alternative, the memory 1103 may be included in the processor 1101.

In a particular implementation, the processor 1101 may include one or more CPUs, such as CPU0 and CPU1 of FIG. 11, as an embodiment. The CPU herein is merely an exemplary illustration, and in different implementations, the CPU may be replaced with a processor of any type or function.

In a particular implementation, as one embodiment, the apparatus 1100 may include a plurality of processors, such as the processor 1101 and the processor 1105 in FIG. 11. Each of these processors may be a single-core processor or a multi-core processor. A processor herein may refer to one or more devices, circuits, and/or processing cores for processing data (e.g., computer program instructions).

The embodiment of the present application further provides a computer readable storage medium, on which a computer program is stored, where the program when executed by a processor may implement the flow related to the terminal device in the embodiment shown in fig. 3 and provided by the foregoing method embodiment.

The embodiment of the present application further provides a computer readable storage medium, on which a computer program is stored, where the program when executed by a processor may implement the flow related to the access network device in the embodiment shown in fig. 3 and provided by the foregoing method embodiment.

The embodiment of the application also provides a computer program product containing instructions, which when executed, perform the method on the terminal device side in the method embodiment shown in fig. 3.

The embodiment of the application also provides a computer program product containing instructions, which when executed, perform the method on the access network device side in the method embodiment shown in fig. 3.

It should be understood that the processors mentioned in the embodiments of the present application may include, but are not limited to, at least one of the following: a central processing unit (central processing unit, CPU), microprocessor, digital signal processor (digital signal processor, DSP), microcontroller (microcontroller unit, MCU), or artificial intelligence processor, each of which may include one or more cores for executing software instructions to perform operations or processes. The processor may be a single semiconductor chip, or may be integrated with other circuitry into a single semiconductor chip, for example, may form a system on a chip (SoC) with other circuitry (e.g., codec circuitry, hardware accelerator circuitry, or various buses and interface circuitry), or may be integrated into the ASIC as a built-in processor of an application specific integrated circuit (application specific integrated circuit, ASIC), which may be packaged separately or may be packaged with other circuitry. The processor may further include necessary hardware accelerators, such as field programmable gate arrays (field programmable gate array, FPGAs), programmable logic devices (programmable logic device, PLDs), or logic circuits implementing dedicated logic operations, in addition to the cores for executing software instructions to perform the operations or processing.

Note that when the processor is a general-purpose processor, DSP, ASIC, FPGA or other programmable logic device, discrete gate or transistor logic device, discrete hardware components, the memory (storage module) is integrated into the processor.

It should also be understood that the memory referred to in embodiments of the present application may be volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The nonvolatile memory may be a read-only memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an electrically Erasable EPROM (EEPROM), or a flash memory. The volatile memory may be random access memory (random access memory, RAM) which acts as an external cache. By way of example, and not limitation, many forms of RAM are available, such as Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous DRAM (SLDRAM), and direct memory bus RAM (DR RAM).

It should be noted that the memory described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

It should be understood that, in various embodiments of the present application, the sequence numbers of the foregoing processes do not mean the order of execution, and the order of execution of the processes should be determined by the functions and internal logic thereof, and should not constitute any limitation on the implementation process of the embodiments of the present application.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

It will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, and are not repeated herein.

In the several embodiments provided by the present application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.

The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in the embodiments of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit.

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server, a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a usb disk, a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk, etc.

The foregoing is merely a specific embodiment of the present application, but the scope of the embodiments of the present application is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the embodiments of the present application, and the changes or substitutions are intended to be covered by the scope of the present application. Therefore, the protection scope of the embodiments of the present application shall be subject to the protection scope of the claims.

Claims

1. A method of communication, the method comprising:

the method comprises the steps that a terminal device receives system information from an access network device, wherein the system information comprises first multicast logic control channel (MCCH) configuration information, and the first MCCH configuration information is used for configuring a first MCCH;

the terminal equipment receives the first MCCH from the access network equipment according to the first MCCH configuration information;

wherein the first MCCH is configured to carry configuration information of at least one first multicast logical traffic channel MTCH, the configuration information of the at least one first MTCH is configured to configure the at least one first MTCH, the configuration information of the MTCH includes MTCH bandwidth part information, MTCH control resource set information, MTCH search space information, an MTCH scrambling code identifier, at least one of an MTCH service identifier set and a group radio network temporary identifier G-RNTI, the configuration information of the MTCH includes common configuration information, and the common configuration information is configured to configure the plurality of MTCHs;

the terminal equipment receives the at least one first MTCH from the access network equipment according to the configuration information of the at least one first MTCH, wherein the at least one MTCH is used for bearing different services, and the same type of services are borne by the same MTCH or the same group of MTCHs.

2. The method according to claim 1, characterized in that:

the configuration information of the at least one first MTCH includes first MTCH configuration information and second MTCH configuration information, where the first MTCH configuration information and the second MTCH configuration information correspond to different service types.

3. The method according to claim 1 or 2, characterized in that:

the system information further includes second MCCH configuration information for configuring a second MCCH.

4. A method according to claim 3, characterized in that:

the second MCCH is used for carrying second MTCH common configuration information, and the second MTCH common configuration information is configuration information for configuring at least one second MTCH.

5. The method of claim 1 or 2, wherein the configuration information of the at least one first MTCH includes third MTCH configuration information including information for configuring a third MTCH, the method further comprising:

the terminal device receives the third MTCH according to an initial bandwidth part BWP, wherein the initial BWP is used for scheduling the system information; and/or

The terminal equipment receives the third MTCH according to one of an initial control resource set CORESET, a paging CORESET and a random access channel RACH response CORESET, wherein the initial CORESET is used for scheduling the system information, the paging CORESET is used for scheduling a paging channel, and the RACH response CORESET is used for scheduling a RACH response channel; and/or

6. The method according to claim 1 or 2, characterized in that:

7. The method according to claim 1 or 2, characterized in that the method comprises:

the terminal equipment receives the first MCCH according to an initial bandwidth part BWP; and/or

The terminal equipment receives the first MCCH according to one of initial CORESET, paging CORESET and RACH response CORESET; and/or

And the terminal equipment receives the first MCCH according to one of the paging SS and the RACH response SS according to the initial search space SS.

8. The method according to claim 1 or 2, characterized in that:

the configuration information of the at least one first MTCH and the at least one parameter included in the configuration information of the first MCCH have the same parameter value.

9. A method of communication, the method comprising:

the access network equipment sends system information to the terminal equipment, wherein the system information comprises first multicast logic control channel (MCCH) configuration information, and the first MCCH configuration information is used for configuring a first MCCH;

the access network equipment sends the first MCCH to the terminal equipment;

the access network device sends the at least one first MTCH to the terminal device, where the at least one MTCH is used to carry different services, and the same type of services are carried by the same MTCH or the same group of MTCHs.

10. The method according to claim 9, wherein:

11. The method according to claim 9 or 10, characterized in that:

12. The method according to claim 11, wherein:

13. The method of claim 9 or 10, wherein the configuration information of the at least one first MTCH includes third MTCH configuration information including information for configuring a third MTCH, the method comprising:

the access network device sends a third MTCH to the terminal device in a bandwidth area corresponding to an initial bandwidth part BWP, wherein the initial BWP is used for scheduling the system information; and/or

The access network device sends a third MTCH to the terminal device on a time domain resource corresponding to one of an initial search space SS, a paging SS and a RACH response SS, wherein the initial SS is used for scheduling the system information, the paging SS is used for scheduling a paging channel, and the RACH response SS is used for scheduling a RACH response channel.

14. The method according to claim 9 or 10, characterized in that:

15. The method according to claim 9 or 10, characterized in that:

the access network equipment sends a first MCCH to the terminal equipment in a bandwidth area corresponding to initial BWP; and/or

The access network equipment sends a first MCCH to the terminal equipment on a frequency domain resource corresponding to one of initial CORESET, paging CORESET and RACH response CORESET; and/or

The access network equipment sends a first MCCH to the terminal equipment on a time domain resource corresponding to one of an initial search space SS, a paging SS and a RACH response SS.

16. The method according to claim 9 or 10, characterized in that:

17. A communication device comprising a receiving unit, characterized in that:

the receiving unit is configured to receive system information from an access network device, where the system information includes first MCCH configuration information of a multicast logical control channel, and the first MCCH configuration information is used to configure a first MCCH; receiving a first MTCH from the access network device, wherein the first MCCH is configured to carry configuration information of at least one first multicast logical traffic channel MTCH, the configuration information of the at least one first MTCH is configured to configure the at least one first MTCH, and the configuration information of the MTCH includes at least one of MTCH bandwidth part information, MTCH control resource set information, MTCH search space information, MTCH scrambling code identification, MTCH service identification set and group radio network temporary identification G-RNTI; the receiving unit is further configured to receive the at least one first MTCH from the access network device, where the at least one MTCH is configured to carry different services, and the same type of services are carried by the same MTCH or the same group of MTCHs, and configuration information of the MTCHs includes common configuration information, and the common configuration information is configured to configure the multiple MTCHs.

18. A communication apparatus comprising a transmission unit, characterized in that:

the sending unit is configured to send system information to a terminal device, where the system information includes first MCCH configuration information of a multicast logical control channel, and the first MCCH configuration information is used to configure a first MCCH; transmitting the first MCCH to the terminal equipment, wherein the first MCCH is used for bearing configuration information of at least one first multicast logical traffic channel MTCH, the configuration information of the at least one first MTCH is used for configuring the at least one first MTCH, the configuration information of the MTCH comprises MTCH bandwidth part information, MTCH control resource set information, MTCH search space information, at least one of MTCH scrambling code identification, MTCH service identification set and group radio network temporary identification G-RNTI, and the configuration information of the MTCH comprises common configuration information, and the common configuration information is used for configuring the plurality of MTCHs; the sending unit is configured to send the at least one first MTCH to the terminal device, where the at least one MTCH is configured to carry different services, and the same type of services are carried by the same MTCH or the same group of MTCHs.

19. A readable storage medium comprising a program or instructions which, when executed by a computer, implement the communication method of any one of claims 1-8, or implement the communication method of any one of claims 9-16.

20. A communication device comprising at least one processor, and a communication interface, characterized by:

the communication interface being coupled to the at least one processor, the communication interface being adapted to obtain a program or instructions which, when executed by the processor, implement the communication method of any of claims 1-8.

21. A communication device comprising at least one processor, and a communication interface, characterized by:

the communication interface being coupled to the at least one processor, the communication interface being adapted to obtain a program or instructions which, when executed by the processor, implement the communication method of any of claims 9-16.