WO2023186138A1

WO2023186138A1 - Multicast session/service transmission method, apparatus, chip and module device

Info

Publication number: WO2023186138A1
Application number: PCT/CN2023/085665
Authority: WO
Inventors: 韩立锋
Original assignee: 展讯通信（上海）有限公司
Priority date: 2022-04-02
Filing date: 2023-03-31
Publication date: 2023-10-05
Also published as: CN116939506A

Abstract

Disclosed in the embodiments of the present application are a multicast session/service transmission method, an apparatus, a chip, and a module device. The multicast session/service transmission method comprises: a terminal device receives first service identifier information and first indication information from a network device, the first service identifier information being used for indicating P activated target multicast sessions/services, the first indication information being used for indicating a radio resource control (RRC) state corresponding to each activated target multicast session/service, and P being an integer greater than or equal to 1; and further, the terminal device receives the P activated target multicast sessions/services from the network device on the basis of the first indication information. By means of the method, the terminal device can determine, on the basis of the indication from the network device, the corresponding RRC state for receiving each activated multicast session/service, so as to improve the reliability of the terminal device in receiving service data.

Description

A multicast session/service transmission method, device, chip and module equipment

Technical field

The present application relates to the field of communications, and in particular to a multicast session/service transmission method, device, chip and module equipment.

Background technique

Multicast broadcast services (MBS) include multicast services and broadcast services. For the multicast service of MBS, the terminal device can receive the multicast session/service in the radio resource control (RRC) connected state (also called the connected state); alternatively, the terminal device can also be deactivated in the RRC (also called the connected state). (called inactive state) to receive the MBS session/service data.

When an MBS multicast session/service is activated, the RRC state through which the terminal receives the activated multicast session/service is an urgent problem to be solved.

Contents of the invention

Embodiments of this application provide a multicast session/service transmission method, device, chip and module device. Through the method provided by this application, when the multicast session/service is activated, the terminal device can follow the instructions of the network device. Determine in which RRC state the activated multicast session/service is received.

In a first aspect, embodiments of the present application provide a multicast session/service transmission method. The method includes: a terminal device receiving first service identification information and first indication information from a network device. Wherein, the first service identification information is used to indicate P activated target multicast sessions/services, and the first indication information is used to indicate the radio resource control RRC state corresponding to each activated target multicast session/service, and P is greater than An integer equal to 1. Further, the terminal device receives P activated target multicast sessions/services from the network device based on the first indication information.

Based on the method provided in the first aspect, the terminal device can determine the appropriate RRC state to receive the activated multicast session/service according to the instructions of the network device, which can improve the reliability of the terminal receiving service data.

In a possible implementation, the terminal device receives a first paging message from the network device. The first paging message includes first service identification information and first indication information; wherein the first service identification information is used to indicate M The first indication information is used to indicate the RRC status corresponding to each activated multicast session/service, and the M activated multicast sessions/services include P activated target multicast sessions/services. Business; M is an integer greater than or equal to 1.

In a possible implementation, the terminal device receives first indication information from the network device; wherein the first indication information is used to indicate the RRC status corresponding to each of the N multicast sessions/services, and the The N multicast sessions/services include the P activated target multicast sessions/services, and N is an integer greater than or equal to 1. Further, the terminal device receives a second paging message from the network device, the second paging message includes first service identification information; wherein the first service identification information is used to indicate M activated multicast sessions/services, and the The M activated multicast sessions/services include the P activated target multicast sessions/services, and M is an integer greater than or equal to 1.

In a possible implementation, the network device is a core network device, and the first indication information is carried in a non-access layer message.

In a possible implementation, the network device is an access network device, and the first indication information is carried in a public RRC message. message or dedicated RRC message.

In a possible implementation, the terminal device determines the target RRC state based on the first indication information; and receives P activated target multicast sessions/services from the network device in the target RRC state.

In a possible implementation, when P is equal to 1, the target RRC state is: the RRC state corresponding to the activated target multicast session/service indicated in the first indication information.

In a possible implementation, when P is an integer greater than 1, the target RRC state satisfies the following rules: if among the P activated target multicast sessions/services, there is an activated target multicast session/service in the th The RRC state indicated in the indication information is RRC connected state, then the target RRC state is RRC connected state; and/or, if among the P activated target multicast sessions/services, there is not one activated target multicast session/service If the RRC state indicated in the first indication information is RRC connected state, and there is an activated target multicast session/service, and the RRC state indicated in the first indication information is RRC deactivated state, then the target RRC state is RRC deactivated. state; and/or, if among the P activated target multicast sessions/services, there is not one activated target multicast session/service and the RRC state indicated in the first indication information is the RRC connected state or the RRC deactivated state, Then the target RRC state is RRC idle state.

In a possible implementation, the terminal device receives auxiliary information from the network device, and the auxiliary information is used to assist the terminal device in determining the target RRC state; further, the terminal device determines the target RRC state based on the first indication information and the auxiliary information.

In a possible implementation, the auxiliary information includes a signal quality threshold or a random number threshold.

In a possible implementation, before receiving P activated target multicast sessions/services from the network device in the target RRC state, the terminal device sends a request message to the network device. The request message is used to request the network device to connect the terminal device to the network device. Convert to the target RRC state; convert the terminal device to the target RRC state based on the request message.

In a possible implementation, the request message carries the target RRC status or the target multicast session/service identifier.

In a possible implementation, the service identification information includes: at least one temporary mobility group identifier TMGI, or at least one TMGI group identifier.

In the second aspect, embodiments of the present application provide a multicast session/service transmission method. The method includes: the network device sends first service identification information and first indication information to the terminal device; wherein, the first service identification information Used to indicate P activated target multicast sessions/services, the first indication information is used to indicate the radio resource control RRC state corresponding to each activated target multicast session/service, P is an integer greater than or equal to 1; to the The terminal device sends P activated target multicast sessions/services.

Based on the beneficial effects of the method provided in the second aspect, please refer to the foregoing description of the beneficial effects of the method provided in the first aspect.

In a possible implementation, the network device sends a first paging message to the terminal device, and the first paging message includes first service identification information and first indication information; wherein the first service identification information is used to indicate M activated multicast sessions/services, the first indication information is used to indicate the RRC status corresponding to each activated multicast session/service, and the M activated multicast sessions/services include the P activated target multicast sessions/services , M is an integer greater than or equal to 1.

In a possible implementation, the network device sends first indication information to the terminal device; wherein the first indication information is used to indicate the RRC status corresponding to each of the N multicast sessions/services, and the N The multicast sessions/services include P activated target multicast sessions/services, and N is an integer greater than or equal to 1; sending a second paging message to the terminal device; wherein the second paging message includes the first service identification information, The first service identification information is used to indicate M activation Active multicast sessions/services, the M activated multicast sessions/services include the P activated target multicast sessions/services, and the M is an integer greater than or equal to 1.

In a possible implementation, the network device is an access network device, and the first indication information is carried in a public RRC message or a dedicated RRC message.

In a possible implementation, the network device sends auxiliary information to the terminal device, and the auxiliary information is used to assist the terminal device in determining the target RRC state.

In a possible implementation, the network device receives a request message from the terminal device, the request message is used to request the network device to convert the terminal device to the target RRC state; and the terminal device is converted to the target RRC state based on the request message.

In a third aspect, the present application provides a device for receiving multicast sessions/services, which device includes a unit for executing the method described in the first or second aspect.

In a fourth aspect, the present application provides a chip, which includes a processor and a communication interface. The processor is configured to cause the chip to execute the method described in the first aspect or the second aspect.

In a fifth aspect, the present application provides a module device, which includes a communication module, a power module, a storage module and a chip, wherein: the power module is used to provide power to the module device; The storage module is used to store data and instructions; the communication module is used for internal communication of the module device, or for communication between the module device and external devices; the chip is used to perform the above-mentioned first aspect or the second aspect. method described.

In a sixth aspect, the present application provides a computer-readable storage medium that stores computer-readable instructions. When the computer-readable instructions are run on a communication device, the communication device causes the communication device to execute the first aspect. or the method described in the second aspect.

In a seventh aspect, the present application provides a computer program or computer program product, which includes code or instructions. When the code or instructions are run on a computer, the computer executes the method described in the first or second aspect.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without exerting creative efforts.

Figure 1 is a schematic architectural diagram of a communication system provided by an embodiment of the present application;

Figure 2 is a schematic flowchart of a multicast session/service transmission method provided by an embodiment of the present application;

Figure 3 is a schematic flowchart of another multicast session/service transmission method provided by an embodiment of the present application;

Figure 4 is a schematic flow chart of another multicast session/service transmission method provided by an embodiment of the present application.

Figure 5 is a schematic structural diagram of a multicast session/service receiving device provided by an embodiment of the present application;

Figure 6 is a schematic structural diagram of a multicast session/service receiving device provided by an embodiment of the present application;

Figure 7 is a schematic structural diagram of a terminal device provided by an embodiment of the present application;

Figure 8 is a schematic structural diagram of a network device provided by an embodiment of the present application.

Detailed ways

Embodiments of the present application provide a multicast session/service transmission method, device, chip and module equipment. In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the attached images. .

The terms "first" and "second" in the description, claims and attached images of this application are used to distinguish different objects, rather than describing a specific sequence. Furthermore, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of operations or units is not limited to the listed operations or units, but optionally also includes operations or units that are not listed, or optionally also includes Other operations or units inherent to such processes, methods, products or equipment.

Reference herein to "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment can be included in at least one embodiment of the present application. The appearances of this phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those skilled in the art understand, both explicitly and implicitly, that the embodiments described herein may be combined with other embodiments.

In this application, "at least one (item)" means one or more, "plurality" means two or more, "at least two (items)" means two or three and three Above, "and/or" is used to describe the corresponding relationship between corresponding objects, indicating that there can be three relationships. For example, "A and/or B" can mean: only A exists, only B exists, and A and B exist simultaneously. In this case, A and B can be singular or plural. The character "/" generally indicates that the corresponding objects before and after are an "or" relationship. “At least one of the following” or similar expressions thereof refers to any combination of these items, including any combination of a single item (items) or a plurality of items (items). For example, at least one of a, b or c can mean: a, b, c, "a and b", "a and c", "b and c", or "a and b and c" ”, where a, b, c can be single or multiple.

In order to better understand the embodiments of the present application, the system architecture of the embodiments of the present application is first described below:

The methods provided by the embodiments of this application can be applied to various communication systems, for example, they can be Internet of things (IoT) systems, narrowband Internet of things (NB-IoT) systems, long-term evolution ( long term evolution (LTE) system, it can also be the fifth generation (5th-generation, 5G) communication system, it can also be a hybrid architecture of LTE and 5G, it can also be a 5G new radio (new radio, NR) system, and future communications New communication systems emerging from development, etc. FIG. 1 is an architectural schematic diagram of a communication system provided by an embodiment of the present application. The solution in the present application may be applicable to this communication system. The communication system may include a core network, access network equipment and terminal equipment. Among them, the number of access network equipment and terminal equipment in Figure 1 is only one, which cannot be regarded as a specific limitation of this application, that is, there can be multiple access network equipment and terminal equipment. The following describes the core network, access network equipment, and terminal equipment shown in Figure 1.

1. Core network

The core network in the embodiment of this application is composed of core network elements. Among them, core network elements can also be called core network equipment, which are network elements deployed in the core network, such as core network control plane network elements or core network user plane network elements. The core network in this embodiment of the present application may be an evolved packet core network (Evolved Packet Core, EPC), a 5G core network (5G Core Network), or it can be a new core network in future communication systems. For example, the 5G core network consists of a set of network elements and implements mobility management and other functions such as Access and Mobility Management Function (AMF), provides data packet routing and forwarding, and Quality of Service (Quality of Service, User Plane Function (UPF) that provides functions such as QoS) management, and Session Management Function (SMF) that provides session management, IP address allocation and management, etc. EPC can be composed of a Mobility Management Entity (MME) that provides functions such as mobility management and gateway selection, a Serving Gateway (S-GW) that provides functions such as data packet forwarding, and a PDN Gateway that provides functions such as terminal address allocation and rate control. (P-GW) composition. For MBS, the core network can include several new network elements to implement functions such as data packet forwarding, MBS conference management, QoS management, and transmission mode switching (switching between unicast and multicast/broadcast transmission modes). Another way is that the function can be implemented by existing core network elements.

2. Access network equipment

In the embodiment of this application, the access network device is a device that provides wireless communication functions for terminal devices, and may also be called a radio access network (radio access network, RAN) device, or access network element, etc. Among them, the access network equipment can support at least one wireless communication technology, such as LTE, new radio (NR), etc. Examples of access network equipment include but are not limited to: next-generation base stations (generation nodeB, gNB), evolved node B (evolved node B, eNB), wireless Network controller (radio network controller, RNC), node B (node B, NB), base station controller (base station controller, BSC), base transceiver station (BTS), home base station (e.g., home evolved node B, or home node B, HNB), baseband unit (BBU), transmitting and receiving point (TRP), transmitting point (TP), mobile switching center, etc. The access network device can also be a wireless controller, a centralized unit (CU), and/or a distributed unit (DU) in a cloud radio access network (CRAN) scenario, or an access network device. Network access equipment can be relay stations, access points, vehicle-mounted equipment, terminal equipment, wearable equipment, and access network equipment in future mobile communications or access network equipment in future evolved PLMNs, etc. In some embodiments, the access network device may also be a device with a wireless communication function for the terminal device, such as a chip system. For example, the chip system may include a chip, and may also include other discrete devices.

In some embodiments, the access network device can also communicate with an Internet Protocol (Internet Protocol, IP) network, such as the Internet, a private IP network, or other data networks.

It should be noted that the network equipment mentioned in this application is a collective term for access network equipment and core network equipment. That is, the network equipment in this application can be replaced by access network equipment or core network equipment unless otherwise specified.

3. Terminal equipment

The terminal device in the embodiment of the present application is a device with wireless communication functions, which can be called a terminal (terminal), user equipment (UE), mobile station (MS), mobile terminal (MT) ), access terminal equipment, vehicle-mounted terminal equipment, industrial control terminal equipment, UE unit, UE station, mobile station, remote station, remote terminal equipment, mobile equipment, UE terminal equipment, wireless communication equipment, UE agent or UE device, etc. Terminal equipment can be fixed or mobile. It should be noted that the terminal device may support at least one wireless communication technology, such as LTE, NR, etc. For example, the terminal device may be a mobile phone (mobile phone), tablet computer (pad), desktop computer, notebook computer, all-in-one computer, vehicle-mounted terminal, virtual reality (VR) terminal device, augmented reality (AR) terminal Equipment, wireless terminals in industrial control, self-driving Wireless terminals in driving, wireless terminals in remote medical surgery, wireless terminals in smart grid, wireless terminals in transportation safety, wireless terminals in smart city Terminals, wireless terminals in smart homes, cellular phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants assistant (PDA), a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, a wearable device, a terminal device in a future mobile communication network or a future evolved public land network mobile , terminal equipment in PLMN), etc. In some embodiments of the present application, the terminal device may also be a device with transceiver functions, such as a chip system. Among them, the chip system may include chips and may also include other discrete devices.

What needs to be known is that the interface between the terminal device and the access network device is an air interface (referred to as an air interface), and a terminal device can be connected to one or more access network devices. An access network device can link and manage multiple terminal devices. There is an interface between the access network equipment and the access network equipment. The interface can be an X2 interface (4G system), an Xn interface (5G system) and other types of interfaces. There is an interface between the access network equipment and the core network equipment. The interface can be an S1 interface (4G system), NG interface (5G system) and other types of interfaces. There is an interface between the terminal device and the terminal device. The interface can be a PC5, WIFI and other types of interfaces.

In order to facilitate understanding of the technical solutions in this application, some technical terms involved in this application will be explained below. It should be noted that these explanations are intended to make the embodiments of the present application easier to understand and should not be regarded as limiting the scope of protection claimed by the present application.

1. Radio resource control (RRC) status

Terminal equipment has three RRC states: RRC connected state (also called connected state), RRC idle state (also called idle state) and inactive state (also called inactive state). in:

RRC idle state: The terminal device has not established an RRC connection with the network, and the access network device does not store the context of the terminal device. If the terminal device needs to enter the RRC connected state from the RRC idle state, it needs to initiate the RRC connection establishment process.

RRC inactive state (also referred to as RRC deactivated state): There is no RRC connection between the terminal device and the access network device, but the access network device saves the context of the terminal device. It can be understood that the terminal device entered the RRC connection state before, and then the access network device released the RRC connection, but the access network device saved the context of the terminal device. If the terminal device needs to enter the RRC connected state from the RRC inactive state again, it needs to initiate an RRC recovery process (or called an RRC connection recovery process). Compared with the RRC connection establishment process, the RRC recovery process has shorter delay and less signaling overhead.

RRC connection state: The terminal device has established an RRC connection with the network and can transmit data. If the terminal device needs to enter the RRC idle state from the RRC connected state, the access network device needs to initiate an RRC connection release process. The access network device releases the RRC connection with the terminal device and releases the context of the terminal device. If the terminal device needs to enter the RRC inactive state from the RRC connected state, the access network device needs to initiate the RRC connection release process. The access network device releases the RRC connection with the terminal device but saves the context of the terminal device.

2. Paging

Paging technology is an important technology in wireless communication systems. Network equipment (which can also be understood as the collective name of access network equipment and core network equipment) can find terminal equipment through paging and initiate services to the terminal equipment. Set in terminal When the device is in the RRC idle state or the RRC inactive state, the network device only knows the tracking area (TA) where the terminal device is located. Therefore, when a network device wants to find a terminal device, it needs to first check the TA to which the terminal device belongs, or check the RNA corresponding to the RAN notification area (also called RAN-based Notification Area) to which the terminal device belongs, and then search within this TA or RNA. The cell sends the paging message. The paging process can be understood as the process of establishing or restoring an RRC connection between the terminal device and the network device.

3. Paging occasion (PO)

The location where paging downlink control information (DCI) and/or paging messages are located is called PO. The terminal device can calculate its own corresponding PO based on relevant parameters (such as its own identification number information and paging-related parameters provided by system messages, etc.). In order to receive paging DCI and paging messages at the corresponding PO.

The paging DCI is used to schedule paging messages, that is, the paging DCI indicates the time-frequency resources of the paging message. After receiving the paging DCI, the terminal device can receive the paging message based on the time-frequency resources of the paging message indicated by the paging DCI. The paging message is carried in the paging physical downlink shared channel (paging PDSCH) and is used to page the terminal equipment. The paging message includes the identity of the terminal equipment being paged. That is to say, if the identifier of a certain terminal device is included in the paging message, it means that the terminal device is paged by the network device.

4. Multicast session/service and service identification information

The service identification information is used to indicate the multicast session/service, that is, it can be understood that there is a mapping relationship between the service identification information and the multicast session/service. The "business identification information" mentioned in this application includes but is not limited to: Temporary Mobile Group Identity (TMGI), or TMGI group (also known as TMGI group) identification.

It should be noted that terminal devices belonging to the same temporary mobility group store the TMGI corresponding to the temporary mobility group, and terminal devices belonging to the same TMGI group store the TMGI group identifier corresponding to the TMGI group. And there is a mapping relationship between TMGI (or TMGI group identifier) and multicast sessions/services. One TMGI (or TMGI group identifier) can correspond to one or more multicast sessions/services, and one multicast session/service can also correspond to one Or multiple TMGI (or TMGI group identifiers).

In this application, when the service identification information is TMGI, it can be understood that TMGI is used as the granularity to indicate the RRC status of the multicast session/service corresponding to the TMGI; when the service identification information is TMGI group identification, it can be understood that With TMGI group as the granularity, it indicates the RRC status of the multicast session/service corresponding to the TMGI group.

5. Activated multicast session/service

The "activated multicast session/service" mentioned in this application can be understood as the multicast session/service indicated by the service identification information carried in the paging message.

6. Activated target multicast session/service

In the embodiment mentioned in this application, the activated target multicast session/service includes: the multicast session/service being received by the terminal device, that is, it can be understood that the terminal device is currently receiving the multicast session/service, but the There is no data transmission in the multicast session/service (which can also be understood as the inactive multicast session/service that the terminal device is receiving); or the activated multicast session/service that the terminal device is interested in receiving, that is, it can It is understood that the terminal device predicts the multicast sessions/services that the user is interested in based on its own historical reception data or historical behavior analysis.

In order to help the terminal device determine the target RRC state to receive the activated multicast session/service, this application provides a A multicast session/service transmission method, device, chip and module equipment. The multicast session/service transmission method, device, chip and module equipment provided by the embodiments of the present application will be further described in detail below.

Please refer to Figure 2. Figure 2 is a schematic flowchart of a multicast session/service transmission method provided by an embodiment of the present application. The execution subject of the method shown in Figure 2 may be a terminal device, or a chip in the terminal device; or, the execution subject of the method shown in Figure 2 may be a network device, or a chip in the network device. Figure 2 takes terminal equipment and network equipment as execution subjects of the method as an example for illustration. As shown in Figure 2, the multicast session/service transmission method includes the following steps.

S201. The terminal device receives first service identification information and first indication information from the network device. Wherein, the first service identification information is used to indicate P activated target multicast sessions/services, and the first indication information is used to indicate each activated target multicast session/service among the P activated target multicast sessions/services. The RRC status corresponding to the service, P is an integer greater than or equal to 1.

In other words, the access network device may instruct the terminal device to receive each activated target multicast session among the P activated target multicast sessions/services by sending the first service identification information and the first instruction information to the terminal device. /Service, the RRC status corresponding to the terminal device. The number of first service identification information is at least one. It can be understood that the first service identification information includes: at least one TMGI or at least one TMGI group identification.

S202. The terminal device receives P activated target multicast sessions/services from the network device based on the first indication information.

That is to say, the network device sends P activated target multicast sessions/services to the terminal device, and the terminal device can receive the P activated target multicast sessions/services according to the RRC status corresponding to each activated target multicast session/service indicated in the first indication information. Activated target multicast session/service.

Alternatively, the terminal device may determine a target RRC state from the RRC states corresponding to P activated target multicast sessions/services according to the first indication information. The target RRC state is used to receive all activated target multicast sessions/services. business. That is, the terminal device receives the P activated target multicast sessions/services based on the first information, including the following steps S11-S12:

Step S11: The terminal device determines the target RRC state based on the first indication information.

In order to facilitate understanding, the following is based on the fact that the number of activated target multicast sessions/services is 1 (that is, the value of P is 1) or the number of activated target multicast sessions/services is multiple (that is, the value of P is greater than 1), The situation of determining the target RRC status is explained in detail.

Scenario 1: The number of activated target multicast sessions/services is 1 (that is, the value of P is 1).

In this case, the terminal device determines the RRC state corresponding to the activated target multicast session/service indicated in the first indication information as the RRC state.

Exemplarily, the first service identification information indicates that there is only one target multicast session/service of the terminal device: activated target multicast session 1/service 1, and the first indication information indicates the activated target multicast session. The RRC state corresponding to session 1/service 1 is RRC connected state. In this case, the terminal device determines the RRC state (that is, the RRC connection state) corresponding to the multicast session 1/service 1 indicated by the first indication information as the target RRC state.

Scenario 2: The number of activated target multicast sessions/services is multiple (that is, the value of P is greater than 1).

In this case, the terminal device can determine a target RRC state from multiple RRC states corresponding to the P activated target multicast sessions/services according to preset rules. In a possible implementation, the preset rules include but are not limited to the following rules:

If among the P activated target multicast sessions/services, there is one activated target multicast session/service and the RRC state indicated in the first indication information is the RRC connected state, then the target RRC state determined by the terminal device is: RRC Connected state. For example, the P activated target multicast sessions/services include: activated target multicast session 1/service 1 and activated target multicast session 2/service 2, and the first indication information indicates the activated target multicast session 1/ The RRC state corresponding to service 1 is RRC connected state, and the RRC state corresponding to activated target multicast session 2/service 2 is RRC deactivated state. In this case, the terminal device indicates the activated target indicated by the first indication information. The RRC state corresponding to multicast session 1/service 1 is determined as the target RRC state (ie, RRC connection state).

And/or, if among the P activated target multicast sessions/services, there is not an activated target multicast session/service, the RRC state indicated in the first indication information is RRC connected state, and there is an activated target multicast session/service. The RRC state indicated by the multicast session/service in the first indication information is the RRC deactivation state, and the target RRC state determined by the terminal device is: the RRC deactivation state. For example, the P activated target multicast sessions/services include: activated target multicast session 2/service 2 and activated target multicast session 3/service 3; the first indication information indicates: activated target multicast session 2 /The RRC state corresponding to service 2 is RRC deactivated state, and the RRC state corresponding to activated target multicast session 3/service 3 is RRC idle state. In this case, the terminal device determines the RRC state corresponding to the activated target multicast session 2/service 2 indicated by the first indication information as the target RRC state (that is, the RRC deactivation state).

And/or, if among the P activated target multicast sessions/services, there is not one activated target multicast session/service and the RRC state indicated in the first indication information is the RRC connected state or the RRC deactivated state, then the terminal The target RRC state determined by the device is: RRC idle state. For example, P activated target multicast sessions/services include: activated target multicast session 3/service 3 and activated target multicast session 4/service 4; the first indication information indicates: activated target multicast session 3 /The RRC state corresponding to service 3 is RRC idle state, and the RRC state corresponding to activated target multicast session 4/service 4 is RRC idle state. In this case, the terminal device determines the RRC state corresponding to the activated target multicast session 3/service 3 or the RRC state corresponding to the activated target multicast session 4/service 4 indicated by the first indication information as the target RRC state (that is, RRC idle state).

Step S12: The terminal device receives the P activated target multicast sessions/services in the target RRC state.

In other words, the terminal device can receive all activated target multicast sessions/services from the network device in a target RRC state determined in step S11. Specifically, the terminal uses the public group radio network temporary identifier (group-common Radio Network Temporary Identifier, group-common RNTI) to decode the physical downlink shared data channel (Physical Downlink Shared Channel, PDSCH) in the RRC idle state and RRC inactive state. To receive the data of the target multicast session/service, the terminal uses the public group identity group-common RNTI and/or UE-specific RNTI in the RRC link state to decode the PDSCH to receive the data of the target multicast session/service.

For example, the P activated target multicast sessions/services indicated by the first service identifier include: activated multicast session 1/service 1 and activated multicast session 2/service 2. The indication content of the first indication information is: activated The RRC state corresponding to multicast session 1/service 1 is RRC connected state, and the RRC state corresponding to activated multicast session 2/service 2 is RRC deactivated state. In this case, according to step S11, the terminal device changes from the RRC connection state (that is, the RRC state corresponding to the activated multicast session 1/service 1) and the RRC deactivation state (that is, the activated multicast session 2/service 2 corresponding to The target RRC state is determined in the RRC state), and the target RRC state is determined to be the RRC connected state. Then the terminal device receives the activated multicast session 1/service 1 and the activated multicast session 2/service 2 in the RRC connected state.

In a possible implementation, after step S11 is executed and before step S12 is executed, the terminal device determines If its current RRC state is not the target RRC state (or it is understood that the current RRC state is different from the target RRC state), the terminal needs to perform RRC state conversion to the target RRC state to receive the activated target multicast session/service. In this case, the terminal device sends a request message to the network device (eg, access network device). The request message is used to request the network device (eg, access network device) to convert the terminal device to the target RRC state. The request message carries the target RRC status, or the request message carries the target multicast session/service identifier. Further, the network device (such as the access network device) can convert the terminal device to the target RRC state based on the request message.

In one example, if the terminal device is currently in the RRC idle state and the target RRC state is the RRC connected state, the terminal device initiates an RRC link establishment process to the access network device through a request message, requesting the access network device to remove the terminal device from the RRC idle state. The state is converted to the RRC connection state. In this example, the request message can be an RRC Setup Request message (also known as an RRC Setup Request message).

In another example, if the terminal device is currently in the RRC deactivation state and the target RRC state is the RRC connected state, the terminal device initiates an RRC link recovery process to the access network device through a request message, requesting the access network device to remove the terminal device from The RRC deactivated state is converted to the RRC linked state. In this example, the request message may be an RRC Resume Request message (also known as RRC Resume Request message) or RRC Resume Request 1 message (also known as RRC Resume Request 1 message).

In summary, the terminal device can assist in determining the appropriate RRC state corresponding to each activated target multicast service based on the instruction information from the network device, which can improve the reliability of the terminal receiving service data.

Next, the multicast session/service transmission method shown in Figure 2 will be refined based on the way in which the network device sends the first service identification information and the first indication information. Please refer to Figures 3 and 4 for details. In the method shown in Figure 3, the network device sends the first service identification information and the first indication information to the terminal device through a paging message. In the method shown in Figure 4, the network device sends the first service identification information and the first indication information to the terminal device through a paging message and other indication information (also called a configuration message).

Please refer to Figure 3. Figure 3 is a schematic flowchart of a multicast session/service transmission method provided by an embodiment of the present application. The execution subject of the method shown in Figure 3 may be a terminal device, or a chip in the terminal device; or, the execution subject of the method shown in Figure 3 may be a network device, or a chip in the network device. Figure 3 takes terminal equipment and network equipment as execution subjects of the method as an example for illustration. As shown in Figure 3, the multicast session/service transmission method includes the following steps.

S301. The terminal device receives the first paging message from the network device. Correspondingly, the network device sends the first paging message to the terminal device.

The first paging message includes first service identification information and first indication information. The first service identification information is used to indicate M activated multicast sessions/services. The M activated multicast sessions/services include the aforementioned P activated target multicast sessions/services. The first indication information is used to indicate The RRC status corresponding to each activated multicast session/service.

For example, the access network device sends a first paging message to the cell in the TA according to the TA to which the terminal device belongs. The first paging message includes a first paging message indicating M activated multicast sessions/services. Service identification information, and first indication information used to indicate the RRC status corresponding to each activated multicast session/service. The terminal device receives the first paging message at its own PO, and can then determine which activated multicast sessions/services it can subsequently receive based on the first paging message (i.e., the aforementioned P activated target multicast sessions/services), and determine through which RRC state each activated multicast session/service can be subsequently received (that is, each of the aforementioned activated target multicast sessions/services corresponds to the RRC state). Can It can be seen that the M activated multicast sessions/services include the aforementioned P activated target multicast sessions/services.

It should be noted that the M multicast sessions/services indicated by the first service identification information in the first paging message are related to the cell corresponding to the terminal device.

In a possible scenario, the first service identification information in the first paging message indicates one or more activated multicast sessions/services. When the terminal receives one or more activated multicast sessions/services indicated by the first paging message, Only when at least one activated target multicast session/service is determined in the multicast session/service, the terminal device will perform the following operations of S302-S303.

S302: The terminal device receives P activated target multicast sessions/services from the network device according to the first service identification information and the first instruction information.

It can be understood that in this case, the specific implementation of S302 may include the following two steps: step 21 and step 22. in:

Step 21: The terminal device determines P activated target multicast sessions/services and the RRC status corresponding to each activated target multicast session/service based on the first service identification information and the first indication information.

That is, the terminal device determines P activated target multicast sessions/services from the M activated multicast sessions/services indicated by the first service identification information; and the terminal equipment determines P activated target multicast sessions/services according to the first indication information. The RRC state corresponding to the multicast session/service determines the RRC state corresponding to each activated target multicast session/service.

For example, TMGI1 corresponds to multicast session 1/service 1, TMGI2 corresponds to multicast session 2/service 2, TMGI3 corresponds to multicast session 3/service 3, TMGI4 corresponds to multicast session 4/service 4, and TMGI5 corresponds to multicast session 5. /business5. The access network device sends a first paging message to the terminal device. The first paging message includes first service identification information and first indication information as shown in Table 1.

Table 1

In this case, if TMGI1, TMGI4 and TMGI5 are stored in the terminal device (that is, the terminal device belongs to TMGI1 and also belongs to TMGI4 and TMGI5). After receiving the first paging message, the terminal device can determine, according to the first paging message, that the P activated target multicast services/sessions corresponding to the terminal device include: multicast session 1/service 1, the activated target The RRC state corresponding to the multicast session/service is RRC connected state. That is to say, the first service identification information determined by the terminal device according to the first paging message is: activated target multicast session 1/service 1, and the first indication information determined: activated target multicast session 1/service 1 The corresponding RRC state is RRC connected state.

Step 22: The terminal device receives the P activated target multicast sessions/services based on the RRC status corresponding to the activated target multicast sessions/services.

For the specific implementation of step 22, please refer to the description of the specific implementation of S202.

To sum up, the network device can instruct the terminal to receive the RRC state of the multicast session/service through the first paging message, so that the terminal device can receive the multicast service in the appropriate RRC state, thereby achieving the effect of terminal power saving. It can also improve the reliability of the terminal receiving service data.

After introducing the paging message to indicate the RRC status corresponding to the multicast session/service, the following will introduce the use of other paging messages. The method of the message indicating the RRC status corresponding to the multicast session/service is introduced in detail. Please refer to Figure 4. Figure 4 is a schematic flowchart of a multicast session/service transmission method provided by an embodiment of the present application. The execution subject of the method shown in Figure 4 may be a terminal device, or a chip in the terminal device; or, the execution subject of the method shown in Figure 4 may be a network device, or a chip in the network device. Figure 4 takes terminal equipment and network equipment as execution subjects of the method as an example for illustration. As shown in Figure 4, the multicast session/service transmission method includes the following steps.

S401. The terminal device receives first indication information from the network device, where the first indication information is used to indicate the RRC status corresponding to each multicast session/service among the N multicast sessions/services. Among them, N is an integer greater than or equal to 1.

In other words, the network device may send the first indication information to the terminal device in advance before paging the terminal device. The first indication information is used to indicate the number corresponding to each of the N multicast sessions/services. RRC status. What needs to be known is that the N multicast sessions/services are related to the terminal device, that is, it can be understood that when the paging message indicates that any of the multicast sessions/services belonging to the N multicast sessions/services is activated , the terminal device will determine the multicast session/service as the activated target multicast session/service. It can be seen that the N multicast sessions/services include the aforementioned P activated target multicast sessions/services.

Further, the terminal device stores the RRC status corresponding to each multicast session/service indicated in the first indication information, so that when the terminal device subsequently receives an activated multicast session/service, it can refer to the first indication information. The indicated RRC status corresponding to each multicast session/service is used to receive the activated multicast session/service.

It should be understood that, if the aforementioned network device is a core network device, the first indication information is carried in the non-access layer message. In other words, the core network device can indicate the RRC status corresponding to each of the N multicast sessions/services to the terminal device through a Non-Access Stratum (NAS) message. The aforementioned network device is an access network device, and the first indication information is carried in a public RRC message (for example, system information (System Information)) or a dedicated RRC message. In other words, the access network device may indicate the RRC status corresponding to each of the N multicast sessions/services to the terminal device through a public RRC message (eg, system information) or a dedicated RRC message.

In a possible scenario, if both the core network device and the access network device send the first indication information to the terminal device, the terminal device shall take the first indication information sent by the access network device as the criterion. Or the terminal device adopts the first instruction information received last among the first instruction information received from the core network device and the access network device.

S402. The terminal device receives a second paging message from the network device. The second paging message includes first service identification information. The first service identification information is used to indicate M activated multicast sessions/services, where M is greater than An integer equal to 1.

For example, the access network device sends a second paging message to the cell in the TA according to the TA to which the terminal device belongs. The second paging message includes a first message indicating M activated multicast sessions/services. Business identification information. The terminal device receives the second paging message at its own PO, and then the terminal device can determine which activated multicast sessions/services it can subsequently receive based on the second paging message (i.e., the aforementioned P activated target multicast sessions/services). ), and determine through which RRC state each activated multicast session/service can be subsequently received (ie, each of the aforementioned activated target multicast sessions/services corresponds to the RRC state). It can be seen that the M activated multicast sessions/services include the aforementioned P activated target multicast sessions/services.

It should be understood that since the N multicast sessions/services are related to the terminal equipment, and the M activated multicast sessions/services are related to the cells corresponding to the terminal equipment, the aforementioned N multicast sessions/services and M There is no necessary connection between activated multicast sessions/services. The network device can activate the multicast session/service multiple times through multiple second paging messages.

S403. The terminal device receives P activated target multicast sessions/services from the network device according to the first service identification information and the first instruction information.

It can be understood that in this case, the specific implementation of S403 may include the following two steps: step 31 and step 32. in:

Step 31: The terminal device determines P activated target multicast sessions/services and the RRC status corresponding to each activated target multicast session/service based on the first service identification information and the first indication information.

That is, the terminal device determines P activated target multicast sessions/services from the M activated multicast sessions/services indicated by the first service identification information according to the content indicated by the first indication information; and the terminal equipment determines P activated target multicast sessions/services according to the first service identification information. The RRC status corresponding to each activated multicast session/service indicated by the indication information determines the RRC status corresponding to each activated target multicast session/service.

For example, TMGI1 corresponds to multicast session 1/service 1, TMGI2 corresponds to multicast session 2/service 2, TMGI3 corresponds to multicast session 3/service 3, TMGI4 corresponds to multicast session 4/service 4, and TMGI5 corresponds to multicast session 5. /business5. The aforementioned first indication information indicates that the RRC states corresponding to the N multicast sessions/services include: TMGI1 corresponds to the RRC connected state, TMGI2 corresponds to the RRC idle state, and TMGI3 corresponds to the RRC deactivated state. The M activated multicast sessions/services indicated by the first service identification information include: TMGI2, TMGI3, TMGI4, and TMGI5. In this case, the terminal device can determine P activated target multicast sessions/services based on the first service identification information and the first indication information: TMGI2 corresponds to multicast session 2/service 2, and TMGI3 corresponds to multicast session 3/ Business 3. That is to say, the terminal device determines that the P activated target multicast sessions/services include: TMGI2 and TMGI3; the RRC status corresponding to each activated target multicast session/service includes: TMGI2 (corresponding to multicast session 2/service 2) Corresponds to RRC idle state, TMGI3 (corresponding to multicast session 3/service 3) corresponds to RRC deactivation state.

Step S32: The terminal device receives P activated target multicast sessions/services from the network device based on the RRC status corresponding to each activated target multicast session/service.

For the specific implementation of S32, please refer to the description of the specific implementation of step S11 and step S12 in the aforementioned S202.

In a possible implementation, before step S11 occurs (that is, before the terminal device determines the target RRC state), the terminal device may also receive auxiliary information from the network device (such as the access network device), and the auxiliary information is used to assist The terminal device determines the target RRC state. Further, the specific implementation of step S11 may be: the terminal device determines the target RRC state according to the first indication information and the auxiliary information. The auxiliary information includes a signal quality threshold or a random number threshold. By implementing this possible method, the terminal device can determine the appropriate target RRC state by combining its own conditions (such as communication environment, computing power, etc.) and the first indication information of the network device, thereby saving the power consumption of the terminal device and improving the terminal reception Reliability of business data.

In a possible implementation, the terminal device determines the target RRC state based on the auxiliary information and the first indication information, including: the terminal device determines the first RRC state based on the aforementioned first indication information, and the terminal device determines the target RRC state based on the auxiliary information. Out of the second RRC state. In this case, if the first RRC state and the second RRC state are the same, the terminal device determines the first RRC state as the target RRC state. If the first RRC state and the second RRC state are different, the terminal device determines the second RRC state as the target RRC state. The following is a schematic explanation combined with the specific content in the auxiliary information.

In an example 1, the auxiliary information includes the signal quality threshold value TH1. When the auxiliary information is used to indicate the current When the signal quality of the terminal device is greater than or equal to the signal quality threshold TH1, the target RRC state may be the RRC deactivated state. In this example, if the first indication information of the terminal device determines that the RRC state corresponding to the activated target multicast session/service is the RRC deactivation state, then only if the terminal device detects that its own signal quality is greater than or equal to the signal quality threshold value TH1, the terminal device determines that the target RRC state is the RRC deactivated state.

In another example 1, the auxiliary information includes the signal quality threshold TH2. When the auxiliary information is used to indicate that when the signal quality of the terminal device is less than or equal to the signal quality threshold TH2, the target RRC state is RRC. Deactivated state. In this example, if the terminal device determines that the RRC state corresponding to the activated target multicast session/service is the RRC deactivation state based on the first indication information, then the terminal device will only When the limit value is TH2, the terminal device determines that the target RRC state is the RRC deactivated state.

In yet another example 1, the auxiliary information includes the signal quality threshold TH3. When the auxiliary information is used to indicate that when the signal quality of the terminal device is less than or equal to the signal quality threshold TH3, the target RRC state is RRC. Connected state. In this example, if the terminal device determines that the RRC state corresponding to the activated target multicast session/service is the RRC deactivation state or the RRC idle state based on the first indication information, but the terminal device detects that the quality of its own signal is less than or equal to the signal If the quality threshold value is TH3, the terminal device can determine that the target RRC state is the RRC connected state.

In an example 2, the auxiliary information includes a random number threshold value P1. When the auxiliary information is used to indicate that when the random number generated by the terminal device is less than or equal to the random number threshold value P1, the target RRC state is RRC. Deactivated state. In this example, if the terminal device determines that the RRC state corresponding to the activated target multicast session/service is the RRC deactivation state according to the first indication information, then only when the random number generated by the terminal device is less than the random number threshold P1 , the terminal device determines that the target RRC state is the RRC deactivated state.

In another example 2, the auxiliary information includes a random number threshold value P2. When the auxiliary information is used to indicate that when the random number generated by the terminal device is greater than or equal to the random number threshold value P2, the target RRC state is RRC deactivated state. In this example, the terminal device determines that the RRC state corresponding to the activated target multicast session/service is the RRC deactivation state based on the first indication information, then only if the random number generated by the terminal device is greater than or equal to the random number threshold At P2, the terminal device determines that the target RRC state is the RRC deactivated state.

In yet another example 2, the auxiliary information includes a random number threshold value P3. When the auxiliary information is used to indicate that when the random number generated by the terminal device is greater than or equal to the random number threshold value P3, the target RRC state is RRC connection state. In this example, the terminal device determines that the RRC state corresponding to the activated target multicast session/service is the RRC deactivated state based on the first indication information, but the random number generated by the terminal device is greater than the random number threshold P3, then the terminal device The device determines that the target RRC state is the RRC connected state.

It can be seen that through such a multicast session/service receiving method, the network device can indicate to the terminal device in advance the appropriate RRC status when receiving each multicast session/service before paging the terminal device, thereby allowing the terminal device to receive multiple multicast sessions/services. Determine the appropriate RRC status when broadcasting sessions/services to save the power consumption of terminal equipment and improve the reliability of terminal equipment receiving service data.

Please refer to Figure 5. Figure 5 is a schematic structural diagram of a multicast session/service receiving device provided by an embodiment of the present invention. The multicast session/service receiving device is configured in a terminal device. The device includes:

The receiving unit 501 receives first service identification information and first indication information from the network device. The first service identification information is used to indicate P activated target multicast sessions/services, and the first indication information is used to indicate each activated target multicast session/service. Many targets Radio Resource Control RRC state corresponding to the multicast session/service, where P is an integer greater than or equal to 1; based on the first indication information, receive P activated target multicast sessions/services from the network device.

In a possible implementation, the receiving unit 501 is also configured to receive a first paging message from the network device, where the first paging message includes first service identification information and first indication information; wherein, the first service identification information The information is used to indicate M activated multicast sessions/services. The first indication information is used to indicate the RRC status corresponding to each activated multicast session/service; the M activated multicast sessions/services include P activated targets. Multicast session/service; M is an integer greater than or equal to 1.

In a possible implementation, the receiving unit 501 is configured to receive first indication information from the network device; wherein the first indication information is used to indicate that each of the N multicast sessions/services corresponds to RRC state; the N multicast sessions/services include P activated target multicast sessions/services, N is an integer greater than or equal to 1; receive the second paging message from the network device, the second paging message includes the One service identification information; wherein, the first service identification information is used to indicate M activated multicast sessions/services, and the M activated multicast sessions/services include P activated target multicast sessions/services; M is greater than or equal to an integer of 1.

In a possible implementation, the device further includes a determining unit 502, the determining unit 502 is used to determine the target RRC state based on the first indication information; the receiving unit 501 is used to receive data from the network device in the target RRC state. P active target multicast sessions/services.

In a possible implementation, when P is an integer greater than 1, the target RRC state satisfies the following rules: if among P activated target multicast sessions/services, there is one activated target multicast session/service in The RRC state indicated in the first indication information is RRC connected state, then the target RRC state is RRC connected state; and/or, if there is no activated target multicast session/service among the P activated target multicast sessions/services, The RRC state indicated by the service in the first indication information is RRC connected state, and there is an activated target multicast session/the RRC state indicated by the service in the first indication information is RRC deactivated state, then the target RRC state is RRC deactivated. Activated state; and/or, if among the P activated target multicast sessions/services, there is not one activated target multicast session/service, and the RRC state indicated in the first indication information is the RRC connected state or the RRC deactivated state. , then the target RRC state is RRC idle state.

In a possible implementation, before determining the target RRC state based on the first indication information, the receiving unit 501 is also configured to receive auxiliary information from the network device, and the auxiliary information is used to assist the terminal device in determining the target RRC state; the determining unit 502. Also used to determine the target RRC state based on the first indication information and auxiliary information.

In a possible implementation, the device further includes a sending unit 503, which is configured to send a request to the network device before receiving P activated target multicast sessions/services from the network device in the target RRC state. message, this request message is used to request the network device to convert the terminal device to the target RRC state.

It should be noted that the functions of each unit module of the multicast session/service receiving device described in the embodiment of the present invention can be specifically implemented according to the method on the terminal device side in the method embodiments of Figures 2 to 4, and the specific implementation process can be Refer to the relevant description of the method embodiments in Figures 2 to 4, which will not be described again here.

Please refer to Figure 6. Figure 6 is a schematic structural diagram of a multicast session/service receiving device provided by an embodiment of the present invention. The multicast session/service receiving device is configured in a network device. The device includes: a sending unit 601. For sending the first service identification information and the first indication information to the terminal device; wherein the first service identification information is used to indicate P activated target multicast sessions/services, and the first indication information is used to indicate each activated target multicast session. The radio resource control RRC state corresponding to the multicast session/service, P is an integer greater than or equal to 1; send P activated target multicast sessions/services to the terminal device.

In a possible implementation, the sending unit 601 is also configured to send a first paging message to the terminal device, where the first paging message includes first service identification information and first indication information; where the first service identification information is For indicating M activated multicast sessions/services, the first indication information is used to indicate the RRC status corresponding to each activated multicast session/service; the M activated multicast sessions/services include P activated target multicasts Session/service; M is an integer greater than or equal to 1.

In a possible implementation, the sending unit 601 is also configured to send first indication information to the terminal device, where the first indication information is used to indicate the number corresponding to each of the N multicast sessions/services. RRC status; N multicast sessions/services include P activated target multicast sessions/services; N is an integer greater than or equal to 1; send a second paging message to the terminal device, and the second paging message includes the first service identifier Information; wherein, the first service identification information is used to indicate M activated multicast sessions/services, and the M activated multicast sessions/services include P activated target multicast sessions/services; M is an integer greater than or equal to 1 .

In a possible implementation, the sending unit 601 is also configured to send auxiliary information to the terminal device, where the auxiliary information is used to assist the terminal device in determining the target RRC state.

In a possible implementation, the device also includes a receiving unit 602 and a processing unit 603. The receiving unit 602 is used to receive a request message from the terminal device. The request message is used to request the network device to convert the terminal device to the target RRC. State; processing unit 603, configured to convert the terminal device to the target RRC state based on the request message.

It should be noted that the functions of each unit module of the multicast session/service receiving device described in the embodiment of the present invention can be specifically implemented according to the method on the network device side in the method embodiments of Figures 2 to 4, and the specific implementation process can be Refer to the relevant description of the method embodiments in Figures 2 to 4, which will not be described again here.

Embodiments of the present application also provide a chip that can perform steps related to the terminal device in the foregoing method embodiments. The chip is used to: receive first service identification information and first indication information from the network device; wherein the first service identification information is used to indicate P activated target multicast sessions/services, and the first indication information is used to indicate each The radio resource control RRC state corresponding to the activated target multicast sessions/services, P is an integer greater than or equal to 1; based on the first indication information, receive P activated target multicast sessions/services from the network device.

In a possible implementation, the chip is configured to: receive a first paging message from a network device, where the first paging message includes first service identification information and first indication information; wherein the first service identification information is For indicating M activated multicast sessions/services, the first indication information is used to indicate the RRC status corresponding to each activated multicast session/service; the M activated multicast sessions/services include P activated target multicasts Session/service; M is an integer greater than or equal to 1.

In a possible implementation, the chip is configured to: receive first indication information from the network device; wherein the first indication information is used to indicate the number corresponding to each of the N multicast sessions/services. RRC status; N multicast sessions/services include P activated target multicast sessions/services; N is an integer greater than or equal to 1 to receive the second paging message from the network device, and the second paging message includes the first service identifier Information; wherein, the first service identification information is used to indicate M activated multicast sessions/services, and the M activated multicast sessions/services include P activated target multicast sessions/services; M is an integer greater than or equal to 1 .

In a possible implementation, the chip is configured to: determine the target RRC state based on the first indication information; and receive P activated target multicast sessions/services from the network device in the target RRC state.

In a possible implementation, before determining the target RRC state based on the first indication information, the chip is configured to: receive auxiliary information from the network device, and the auxiliary information is used to assist the terminal device in determining the target RRC state; based on the first indication information and auxiliary information to determine the target RRC status.

In a possible implementation, the chip is used to: before receiving P activated target multicast sessions/services from the network device in the target RRC state, send a request message to the network device, the request message is used to request the network equipment Convert the terminal device to the target RRC state.

Embodiments of the present application also provide a chip module, which can be applied in terminal equipment. The chip module includes the above-mentioned chip that can be applied in terminal equipment.

Embodiments of the present application also provide a chip that can perform relevant steps of the network device in the foregoing method embodiments. The chip is used to: send first service identification information and first indication information to the terminal device, the first service identification information is used to indicate P activated target multicast sessions/services, and the first indication information is used to indicate each activated target multicast session/service. The radio resource control RRC state corresponding to the target multicast session/service, where P is an integer greater than or equal to 1; sends P activated target multicast sessions/services to the terminal device.

In a possible implementation, the chip is configured to: send a first paging message to the terminal device, where the first paging message includes first service identification information and first indication information; wherein the first service identification information is used to indicate M activated multicast sessions/services, the first indication information is used to indicate the RRC status corresponding to each activated multicast session/service; the M activated multicast sessions/services include P activated target multicast sessions/ Business; M is an integer greater than or equal to 1.

In a possible implementation, the chip is configured to: send first indication information to the terminal device, where the first indication information is used to indicate the RRC status corresponding to each of the N multicast sessions/services. ; N multicast sessions/services include P activated target multicast sessions/services; N is an integer greater than or equal to 1; Send a second paging message to the terminal device, and the second paging message includes the first service identification information; The first service identification information is used to indicate M activated multicast sessions/services, and the M activated multicast sessions/services include P activated target multicast sessions/services; M is an integer greater than or equal to 1.

In a possible implementation, the chip is used to: send auxiliary information to the terminal device, and the auxiliary information is used to assist the terminal device in determining the target RRC state.

In a possible implementation, the chip is used to: receive a request message from the terminal device, the request message is used to request the network device to convert the terminal device to the target RRC state; and to convert the terminal device to the target RRC state based on the request message. state.

An embodiment of the present application also provides a chip module that can be applied in network equipment. The chip module includes the above-mentioned chip that can be applied in network equipment.

Please refer to Figure 7, which is a schematic structural diagram of a terminal device provided by an embodiment of the present application. The terminal device 70 described in the embodiment of this application includes: a processor 701 and a memory 702. The processor 701 and the memory 702 are connected through one or more communication buses.

The above-mentioned processor 701 can be a central processing unit (Central Processing Unit, CPU), which can also be other general-purpose processors, digital signal processors (Digital Signal Processor, DSP), application specific integrated circuits (Application Specific Integrated Circuit, ASIC ), off-the-shelf programmable gate array (Field-Programmable Gate Array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or the processor may be any conventional processor, etc. The processor 701 is configured to support the user equipment to perform corresponding functions of the terminal equipment in the methods of Figures 2-4.

The above-mentioned memory 702 may include read-only memory and random access memory, and provides computer programs and data to the processor 701. Portion of memory 702 may also include non-volatile random access memory. Among them, the processor 701 is used to execute when calling the computer program:

Receive first service identification information and first indication information from the network device. The first service identification information is used to indicate P activated target multicast sessions/services, and the first indication information is used to indicate each activated target multicast session. / Radio resource control RRC state corresponding to the service, where P is an integer greater than or equal to 1; based on the first indication information, receive P activated target multicast sessions/services from the network device.

In a possible implementation, a first paging message is received from a network device, and the first paging message includes first service identification information and first indication information; wherein the first service identification information is used to indicate M activated multicast sessions/services, the first indication information is used to indicate the RRC status corresponding to each of the M activated multicast sessions/services; the M activated multicast sessions/services include P Activated target multicast session/service; M is an integer greater than or equal to 1.

In a possible implementation, first indication information is received from the network device; wherein the first indication information is used to indicate the RRC status corresponding to each of the N multicast sessions/services; The multicast session/service includes P activated target multicast sessions/services; N is an integer greater than or equal to 1 to receive the second paging message from the network device, and the second paging message includes the first service identification information; wherein, the A service identification information is used to indicate M activated multicast sessions/services, and the M activated multicast sessions/services include P activated target multicast sessions/services; M is an integer greater than or equal to 1.

In a possible implementation, the target RRC state is determined based on the first indication information; P activated target multicast sessions/services are received from the network device in the target RRC state.

In a possible implementation, P is equal to 1, and the target RRC state is: the RRC state corresponding to the activated target multicast session/service indicated in the first indication information.

In a possible implementation, P is an integer greater than 1; the target RRC state satisfies the following rules: if among P activated target multicast sessions/services, there is one activated target multicast session/service in the first indication The RRC state indicated in the information is RRC connected state, then the target RRC state is RRC connected state; and/or, if there are more than P active targets, In the multicast session/service, there is no activated target multicast session/service. The RRC state indicated in the first indication information is RRC connected state, and there is an activated target multicast session/service indicated in the first indication information. The RRC state is the RRC deactivated state, then the target RRC state is the RRC deactivated state; and/or, if among the P activated target multicast sessions/services, there is not one activated target multicast session/service in the first If the RRC state indicated in the indication information is the RRC connected state or the RRC deactivated state, the target RRC state is the RRC idle state.

In a possible implementation, based on the first indication information, before determining the target RRC state, auxiliary information is received from the network device, and the auxiliary information is used to assist the terminal device in determining the target RRC state; based on the first indication information and the auxiliary information, Determine the target RRC status.

In a possible implementation, before receiving P activated target multicast sessions/services from the network device in the target RRC state, a request message is sent to the network device. The request message is used to request the network device to convert the terminal device. to the target RRC state.

In specific implementation, the processor 701 and the memory 702 described in the embodiment of the present invention can execute the implementation described in the method embodiments of Figures 2 to 4 provided by the embodiment of the present invention, and can also execute the method provided by the embodiment of the present invention. The implementation method of the multicast session/service receiving device described in Figure 5 will not be described again here.

Please refer to Figure 8, which is a schematic structural diagram of a network device provided by an embodiment of the present application. The network device 80 described in the embodiment of this application includes: a processor 801 and a memory 802. The processor 801 and the memory 802 are connected through one or more communication buses.

The above-mentioned processor 801 can be a central processing unit (Central Processing Unit, CPU), which can also be other general-purpose processors, digital signal processors (Digital Signal Processor, DSP), application specific integrated circuits (Application Specific Integrated Circuit, ASIC ), off-the-shelf programmable gate array (Field-Programmable Gate Array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or the processor may be any conventional processor, etc. The processor 801 is configured to support the user equipment to perform corresponding functions of the network equipment in the methods of Figures 2-4.

The above-mentioned memory 802 may include read-only memory and random access memory, and provides computer programs and data to the processor 801. A portion of memory 802 may also include non-volatile random access memory. Wherein, when the processor 801 calls the computer program, it is used to execute: send the first service identification information and the first instruction information to the terminal device, the first service identification information is used to indicate P activated target multicast sessions/services, the first instruction The information is used to indicate the radio resource control RRC status corresponding to each activated target multicast session/service, where P is an integer greater than or equal to 1; send P activated target multicast sessions/services to the terminal device.

In a possible implementation, a first paging message is sent to the terminal device, and the first paging message includes first service identification information and first indication information; wherein the first service identification information is used to indicate M activated multiplexers. multicast session/service, the first indication information is used to indicate the RRC status corresponding to each activated multicast session/service; M activated multicast sessions/services include P activated target multicast sessions/services; M is greater than An integer equal to 1.

In a possible implementation, first indication information is sent to the terminal device, where the first indication information is used to indicate the RRC status corresponding to each of the N multicast sessions/services; The session/service contains P activated target multicast sessions/services; N is an integer greater than or equal to 1; a second paging message is sent to the terminal device, and the second paging message includes the first service identification information; wherein, the first service The identification information is used to indicate M activated multicast sessions/services, and the M activated multicast sessions/services include P activated target multicast sessions/services.

In a possible implementation, auxiliary information is sent to the terminal device, and the auxiliary information is used to assist the terminal device in determining the target RRC state.

In a possible implementation, a request message is received from the terminal device, the request message is used to request the network device to convert the terminal device to the target RRC state; and the request message is used to convert the terminal device to the target RRC state based on the request message.

In specific implementation, the processor 801 and the memory 802 described in the embodiment of the present invention can execute the implementation described in the method embodiments of Figures 2 to 4 provided by the embodiment of the present invention, and can also execute the method provided by the embodiment of the present invention. The implementation method of the multicast session/service receiving device described in Figure 6 will not be described again here.

Embodiments of the present application also provide a computer-readable storage medium. The readable storage medium stores a computer program. When the computer program is executed by a processor, it can be used to implement the embodiments described in Figures 2 to 4 of the present application. The multicast session/service transmission method will not be described in detail here.

The computer-readable storage medium may be an internal storage unit of the computer device of any of the aforementioned embodiments, such as a hard disk or memory of the device. Computer-readable storage media can also be external storage devices of computer equipment, such as plug-in hard drives equipped on the equipment, smart memory cards (Smart Media Card, SMC), secure digital (Secure Digital, SD) cards, flash memory cards (Flash Card) etc. Further, the computer-readable storage medium may also include both an internal storage unit of the computer device and an external storage device. Computer-readable storage media are used to store computer programs and other programs and data required by computer equipment. Computer-readable storage media can also be used to temporarily store data that has been output or is to be output.

An embodiment of the present application also provides a computer program product. When the computer program product is run on a processor, the method flow of the above method embodiment is implemented.

Regarding the various modules/units included in each device and product described in the above embodiments, they may be software modules/units or hardware modules/units, or they may be partly software modules/units and partly hardware modules/units. . For example, each module/unit included in each device or product applied or integrated into a chip can be implemented in the form of hardware such as circuits, or at least some of the modules/units can be implemented in the form of a software program. The software program Running on the integrated processor inside the chip, the remaining (if any) modules/units can be implemented in hardware such as circuits; for each device or product applied to or integrated in the chip module, each module/unit included in it can be It is implemented in the form of hardware such as circuits. Different modules/units can be located in the same piece of the chip module (such as chips, circuit modules, etc.) or in different components. Alternatively, at least some of the modules/units can be implemented in the form of software programs. The software The program runs on the processor integrated inside the chip module, and the remaining (if any) modules/units can be implemented using circuits and other hardware methods; for each device or product that is applied to or integrated into the terminal, the modules/units it contains can They are all implemented in the form of hardware such as circuits. Different modules/units can be located in the same component (for example, chip, circuit module, etc.) or in different components in the terminal, or at least some of the modules/units can be implemented in the form of software programs. The software program runs on the processor integrated inside the terminal, and the remaining (if any) modules/units can be implemented using circuits and other hardware methods.

Those of ordinary skill in the art can understand that all or part of the processes in implementing the methods of the above embodiments can be completed by instructing relevant hardware through computer programs. The program can be stored in a readable storage medium. When the program is executed, Including the processes of the embodiments of the above methods. Among them, the storage medium can be a magnetic disk, an optical disk, a read-only memory (Read-Only Memory, ROM) or a random access memory (Random Access Memory, RAM), etc.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present application, but not to limit it; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: The technical solutions described in the foregoing embodiments can still be modified, or some or all of the technical features can be equivalently replaced; and these modifications or substitutions do not deviate from the essence of the corresponding technical solutions from the technical solutions of the embodiments of the present application. scope.

Claims

A multicast session/service transmission method, characterized in that the method includes:

Receive first service identification information and first indication information from the network device; wherein the first service identification information is used to indicate P activated target multicast sessions/services, and the first indication information is used to indicate each The radio resource control RRC state corresponding to the activated target multicast session/service, where P is an integer greater than or equal to 1;

Based on the first indication information, the P activated target multicast sessions/services are received from the network device.
The method according to claim 1, characterized in that receiving the first service identification information and the first indication information from the network device includes:

Receive a first paging message from the network device, the first paging message including first service identification information and first indication information; wherein the first service identification information is used to indicate M activated multicast Session/service, the first indication information is used to indicate the RRC status corresponding to each activated multicast session/service, and the M activated multicast sessions/services include the P activated target multicast sessions/services. Business, the M is an integer greater than or equal to 1.
The method according to claim 1, characterized in that receiving the first service identification information and the first indication information from the network device includes:

Receive first indication information from the network device; wherein the first indication information is used to indicate the RRC status corresponding to each of the N multicast sessions/services, the N multicast sessions/services Contains the P activated target multicast sessions/services, and the N is an integer greater than or equal to 1;

Receive a second paging message from a network device; wherein the second paging message includes first service identification information, and the first service identification information is used to indicate M activated multicast sessions/services, and the M The activated multicast sessions/services include the P activated target multicast sessions/services, and the M is an integer greater than or equal to 1.
The method of claim 3, wherein the network device is a core network device, and the first indication information is carried in a non-access layer message.
The method according to claim 3, wherein the network device is an access network device, and the first indication information is carried in a public RRC message or a dedicated RRC message.
The method according to any one of claims 1-5, characterized in that, based on the first indication information, receiving the P activated target multicast sessions/services from the network device includes:

Based on the first indication information, determine the target RRC status;

In the target RRC state, the P activated target multicast sessions/services are received from the network device.
The method according to claim 6, characterized in that, when the P is equal to 1, the target RRC state is: the RRC corresponding to the activated target multicast session/service indicated in the first indication information. state.
The method according to claim 6, characterized in that, when the P is an integer greater than 1, the target RRC state satisfies the following rules:

If among the P activated target multicast sessions/services, there is one activated target multicast session/service and the RRC state indicated in the first indication information is RRC connected state, then the target RRC state is RRC. connection state;

And/or, if among the P activated target multicast sessions/services, there is not one activated target multicast session/service, the RRC state indicated in the first indication information is RRC connected state, and there is one If the RRC state indicated in the first indication information of the activated target multicast session/service is the RRC deactivation state, then the target RRC state is the RRC deactivation state;

And/or, if among the P activated target multicast sessions/services, there is not one activated target multicast session/service, and the RRC state indicated in the first indication information is RRC connected state or RRC deactivated. state, the target RRC state is the RRC idle state.
The method according to any one of claims 6-8, characterized in that, before determining the target RRC state based on the first indication information, the method further includes:

Receive auxiliary information from the network device, where the auxiliary information is used to assist the terminal device in determining the target RRC state;

Determining the target RRC status based on the first indication information includes:

Based on the first indication information and the auxiliary information, a target RRC state is determined.
The method according to claim 9, characterized in that the auxiliary information includes a signal quality threshold or a random number threshold.
The method according to any one of claims 6-10, characterized in that, after determining the target RRC status and before receiving the P activated target multicast sessions/services, the method further includes :

Send a request message to the network device, where the request message is used to request the network device to convert the terminal device to the target RRC state.
The method according to claim 11, characterized in that the request message carries the target RRC status or the target multicast session/service identifier.
The method according to claim 1, characterized in that the service identification information includes: at least one temporary mobility group identification TMGI, or at least one TMGI group identification.
A multicast session/service transmission method, characterized in that the method is applied to network equipment, and the method includes:

Send first service identification information and first indication information to the terminal device; wherein the first service identification information is used to indicate P activated target multicast sessions/services, and the first indication information is used to indicate each activated target multicast session The radio resource control RRC state corresponding to the call/service, and the P is an integer greater than or equal to 1;

Send the P activated target multicast sessions/services to the terminal device.
The method according to claim 14, characterized in that sending the first service identification information and the first indication information to the terminal device includes:

Send a first paging message to the terminal device, where the first paging message includes first service identification information and first indication information;

Wherein, the first service identification information is used to indicate M activated multicast sessions/services, the first indication information is used to indicate the RRC status corresponding to each activated multicast session/service, and the M activated multicast sessions/services The multicast sessions/services include the P activated target multicast sessions/services, and the M is an integer greater than or equal to 1.
The method according to claim 14, characterized in that sending the first service identification information and the first indication information to the terminal device includes:

Send first indication information to the terminal device; wherein the first indication information is used to indicate the RRC status corresponding to each of the N multicast sessions/services, and the N multicast sessions/services The service includes the P activated target multicast sessions/services, and the N is an integer greater than or equal to 1;

Send a second paging message to the terminal device; wherein the second paging message includes first service identification information, and the first service identification information is used to indicate M activated multicast sessions/services, and the The M activated multicast sessions/services include the P activated target multicast sessions/services, and the M is an integer greater than or equal to 1.
The method according to claim 16, wherein the network device is a core network device, and the first indication information is carried in a non-access layer message.
The method according to claim 16, wherein the network device is an access network device, and the first indication information is carried in a public RRC message or a dedicated RRC message.
The method according to any one of claims 14-18, characterized in that the method further includes:

Send auxiliary information to the terminal device, where the auxiliary information is used to assist the terminal device in determining the target RRC state.
The method according to claim 19, characterized in that the auxiliary information includes a signal quality threshold or a random number threshold.
The method according to any one of claims 15-19, characterized in that the method further includes:

Receive a request message from the terminal device, the request message being used to request the network device to convert the terminal device to the target RRC state;

Transition the terminal device to the target RRC state based on the request message.
The method according to claim 21, characterized in that the request message carries the target RRC status or the target multicast session/service identifier.
The method according to claim 15, characterized in that the service identification information includes: at least one temporary mobility group identification TMGI, or at least one TMGI group identification.
A device for receiving multicast sessions/services, characterized in that the device includes:

A receiving unit configured to receive first service identification information and first indication information from the network device; wherein the first service identification information is used to indicate P activated target multicast sessions/services, and the first indication information Used to indicate the radio resource control RRC status corresponding to each activated target multicast session/service, where the P is an integer greater than or equal to 1;

A receiving unit configured to receive the P activated target multicast sessions/services based on the first indication information.
A device for receiving multicast sessions/services, characterized in that the device is applied to network equipment, and the device includes:

A sending unit, configured to send first service identification information and first indication information to the terminal device; wherein the first service identification information is used to indicate P activated target multicast sessions/services, and the first indication information is To indicate the radio resource control RRC state corresponding to each activated target multicast session/service, the P is an integer greater than or equal to 1; send the P activated target multicast sessions/services to the terminal device.
A chip, characterized in that the chip includes a processor and a communication interface, the processor is configured to cause the chip to execute the method according to any one of claims 1 to 13, or the processing The processor is configured to cause the chip to perform the method according to any one of claims 14 to 23.
A module device, characterized in that the module device includes a communication module, a power module, a storage module and a chip, wherein:

The power module is used to provide electrical energy to the module equipment;

The storage module is used to store data and instructions;

The communication module is used for internal communication of the module device, or for communication between the module device and external devices;

The chip is used to perform the method according to any one of claims 1 to 13, or the chip is used to perform the method according to any one of claims 14 to 23.
A computer device, characterized in that it includes a processor and a memory, the processor and the memory are connected to each other, wherein the memory is used to store a computer program, the computer program includes program instructions, and the processor is It is configured to call the program instructions to perform the method as described in any one of claims 1 to 13, or to perform the method as described in any one of claims 14 to 23.
A computer-readable storage medium, characterized in that the computer-readable storage medium stores a computer program The computer program includes program instructions that, when executed by a processor, cause the processor to perform the method of any one of claims 1 to 13, or to perform the method of claims 14 to 23. any of the methods described.