MBS processing method and apparatus, and MBS indication method and apparatus

Abstract

An MBS processing method and apparatus, and an MBS indication method and apparatus. The MBS processing method comprises: a terminal device receives a first message sent by a network device, the first message at least comprising information of a first geographical area, and the information of the first geographical area at least being used for indicating a service area of an MBS; the terminal device determines the service area of the MBS on the basis of the information of the first geographical area; and the terminal device performs first processing at least on the basis of the first message and / or the service area of the MBS.

Description

MBS service processing methods, instruction methods and devices Technical Field

[0001] This application relates to the field of communications. Background Technology

[0002] According to 5G specifications, the Multicast and Broadcast Services (MBS) feature of Terrestrial Network (TN) systems can also be used in Non-Terrestrial Network (NTN) systems. NTN systems have a wider coverage area than TN systems, and leveraging this characteristic, the MBS feature provides significant added value to NR NTN systems.

[0003] In NR NTN systems, the coverage area of ​​a satellite footprint is far greater than the geographical area covered by a traditional TN cell. Prior to Rel-19 specifications, MBS (Mobile Broadband Service) was provided by terrestrial base stations, with the service area measured in whole-cell increments. However, in NTN networks, MBS services may need to be provided via satellite. Due to the wide coverage area of ​​satellites, signaling or messages related to MBS services transmitted via satellite may be received by terminal devices within the entire satellite footprint. This means the signal coverage area of ​​the MBS service provided by the network may be far greater than the originally intended service area, or the expected service area.

[0004] Figure 1 is a schematic diagram of the satellite coverage of the NR NTN system. Taking the case where satellite footprints cover two countries as an example, as shown in Figure 1, a certain MBS service is provided by network equipment to subscribers within country A. The geographical area of ​​country B is not the intended service area for this MBS service. However, when the satellite transmits the MBS service to country A, since the satellite also covers the geographical area of ​​country B, users in country B may also receive the MBS content. Due to reasons such as subscription plans, laws and regulations, billing, information content, and reception overhead, network equipment or terminal equipment may not want terminal devices within country B to receive this MBS service.

[0005] In the Work Item Description (WID) of 3GPP Release 19, in response to the above issues, it was proposed that the standardization work in R19 should specify SIB signaling to indicate the expected service area in order to deal with the situation of excessive satellite coverage.

[0006] According to the work item description in NR NTN RAN R19, a multicast or broadcast service may not be expected to be provided to the entire coverage area of ​​an NTN cell, and the area of ​​intended service needs to be indicated in the SIB, as follows:

[0007] The signaling that specifies the intended service area of ​​a broadcast service (e.g., MBS broadcast) via NR NTN:

[0008] Specify SIB signaling to indicate the intended service area when the satellite footprint covers a larger area.

[0009] It should be noted that the above introduction to the technical background is only for the purpose of providing a clear and complete explanation of the technical solutions of this application and facilitating understanding by those skilled in the art. It should not be assumed that these technical solutions are known to those skilled in the art simply because they have been described in the background section of this application.

[0010] Summary of the Invention

[0011] Based on the current progress of 3GPP work, it has been agreed that network devices can indicate one or more intended service area IDs(s) corresponding to different MBS sessions to terminal devices in the Multicast Control Channel (MCCH). This enables terminal devices to determine, based on their location information, whether they are within the intended service area of ​​the MBS service or service session of interest to the terminal device, and thus decide whether to perform actions related to receiving the MBS service, such as establishing or releasing a Multicast Radio Bearer (MRB).

[0012] Current 3GPP discussions agree that network devices can indicate to terminal devices either by specifying a reference location plus a radius corresponding to a geographic area that corresponds to the expected service area of ​​an MBS service or service session, or by indicating a polygon corresponding to that geographic area. However, there is currently no conclusion on how to indicate the specific information of that geographic area to the terminal device and the mapping relationship between the identifier of that geographic area and the expected service area.

[0013] Additionally, terminal devices not located within the service area of ​​any MBS service of interest may not need to reacquire the MCCH. Whether the specification needs to be enhanced accordingly, and how to enhance it, has not yet been decided.

[0014] In addition, current 3GPP working discussions limit the expected service area of ​​broadcast services to the serving cell, without considering the needs of terminal devices interested in MBS or receiving MBS services to obtain the expected service area of ​​MBS services from other cells when switching or reselecting cells.

[0015] The inventors discovered that the following problems still exist:

[0016] The current specifications are based on the situation where MBS services are provided by terrestrial base stations. There is no standardization for situations where the actual signal coverage of the MBS service provided by the network is much larger than the expected service area of ​​the MBS service that the network intends to provide. Therefore, the network equipment does not indicate the specific geographical area information corresponding to the expected service area of ​​the MBS service to the terminal equipment, and it is impossible to prevent the terminal equipment from still obtaining the MBS service in the non-expected service area.

[0017] In addition, according to the 3GPP Rel-19 work progress, the specific geographical area information corresponding to the expected service area of ​​MBS service should be indicated by what signaling, and the relationship between the indicated geographical area and MBS service and the cell where the terminal equipment is located, etc., are currently uncertain.

[0018] In addition to broadcast services, MBS also has multicast services. In the NTN system, MBS services have the problem that the actual signal coverage is greater than the expected service area. In addition to the need to enhance the reception of MBS broadcast services, the reception of MBS multicast services also needs to be enhanced.

[0019] In addition, for terminal devices that are not within the intended service area of ​​the MBS service of interest, the specifications need to be further enhanced to avoid unnecessary reception of information related to the MBS service (such as the relevant MCCH).

[0020] To address one or more of the aforementioned problems, embodiments of this application provide a method for processing MBS services, an instruction method, and an apparatus.

[0021] According to one aspect of the embodiments of this application, an MBS service processing apparatus is provided, the apparatus being applied to a terminal device, the apparatus comprising: a receiver for receiving a first message sent by a network device, the first message including at least information of a first geographical region, the information of the first geographical region being used at least to indicate the service area of ​​the MBS service; a processor for determining the service area of ​​the MBS service based on the information of the first geographical region; and performing a first processing at least based on the first message and / or the service area of ​​the MBS service.

[0022] According to another aspect of the embodiments of this application, an indication device for MBS services is provided. The device is applied to a network device and includes: a transmitter that sends a first message to a terminal device, the first message including at least information about a first geographical region, the information about the first geographical region being used at least to indicate the service area of ​​the MBS service.

[0023] According to another aspect of the embodiments of this application, a communication system is provided, the communication system including a terminal device and / or a network device, the terminal device including a processing device for the MBS service described above according to the embodiments of this application, and the network device including an indication device for the MBS service described above according to the embodiments of this application.

[0024] According to another aspect of the embodiments of this application, a method for processing MBS services is provided. The method is applied to a terminal device, and the method includes: the terminal device receiving a first message sent by a network device, the first message including at least information of a first geographical region, the information of the first geographical region being used at least to indicate the service area of ​​the MBS service; the terminal device determining the service area of ​​the MBS service based on the information of the first geographical region; and the terminal device performing a first processing based at least on the first message and / or the service area of ​​the MBS service.

[0025] According to another aspect of the embodiments of this application, a method for indicating MBS services is provided. The method is applied to a network device and includes: the network device sending a first message to a terminal device, the first message including at least information of a first geographical region, the information of the first geographical region being used at least to indicate the service area of ​​the MBS service.

[0026] According to another aspect of the embodiments of this application, a computer-readable program is provided, wherein when the program is executed in an MBS service processing apparatus or terminal device, the program causes the MBS service processing apparatus or terminal device to perform the MBS service processing method described in the embodiments of this application.

[0027] According to another aspect of the embodiments of this application, a computer-readable program is provided, wherein when the program is executed in an MBS service instruction device or network device, the program causes the MBS service instruction device or network device to perform the MBS service instruction method described in the embodiments of this application.

[0028] According to another aspect of the embodiments of this application, a storage medium storing a computer-readable program is provided, wherein the computer-readable program causes an MBS service processing apparatus or terminal device to perform the MBS service processing method described in the embodiments of this application.

[0029] According to another aspect of the embodiments of this application, a storage medium storing a computer-readable program is provided, wherein the computer-readable program causes an MBS service instruction device or network device to perform the MBS service instruction method described in the embodiments of this application.

[0030] One of the beneficial effects of the embodiments of this application is that:

[0031] The terminal device can determine the service area of ​​the MBS service based on the information of the first geographical area in the first message indicated by the network device, and can then perform appropriate processing based on the first message and / or the determined service area of ​​the MBS service.

[0032] For example, terminal devices can determine whether they are within the service area of ​​MBS services based on their own location information. When a terminal device is not within the service area of ​​any MBS service it is interested in, it can promptly notify the network equipment so that subsequent network adjustments and processing can be carried out.

[0033] Furthermore, it avoids unnecessary monitoring and reception of MCCH; and when the terminal device detects that the MCCH configuration may have changed, the terminal device can listen to and receive the MCCH of MBS as well as the content of MBS service itself, preventing the missed MBS reception.

[0034] Specific embodiments of this application are disclosed in detail with reference to the following description and accompanying drawings, indicating how the principles of this application can be adopted. It should be understood that the embodiments of this application are not limited in scope. Within the spirit and scope of the appended claims, embodiments of this application include many changes, modifications, and equivalents.

[0035] Features described and / or illustrated for one embodiment may be used in the same or similar manner in one or more other embodiments, combined with features in other embodiments, or substituted for features in other embodiments.

[0036] It should be emphasized that the term "including / comprises / have" as used herein refers to the presence of a feature, whole, step, or component, but does not exclude the presence or addition of one or more other features, wholes, steps, or components. Attached Figure Description

[0037] The elements and features described in one drawing or embodiment of this application may be combined with elements and features shown in one or more other drawings or embodiments. Furthermore, in the drawings, similar reference numerals denote corresponding parts in several drawings and can be used to indicate corresponding parts used in more than one embodiment.

[0038] The accompanying drawings, which form part of the specification, are used to provide a further understanding of the embodiments of this application and illustrate the implementation methods of this application, together with the textual description, to explain the principles of this application. Obviously, the drawings described below are merely some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without any creative effort. In the drawings:

[0039] Figure 1 is a schematic diagram of the satellite coverage of the NR NTN system;

[0040] Figure 2 is a schematic diagram of a communication system according to an embodiment of this application;

[0041] Figure 3 is a schematic diagram of an MBS service processing method according to an embodiment of this application;

[0042] Figure 4 is a schematic diagram of the relationship between the first geographical region and the cell in an embodiment of this application;

[0043] Figure 5 is a schematic diagram of an MBS service indication method according to an embodiment of this application;

[0044] Figure 6 is an interactive diagram of an MBS service processing method according to an embodiment of this application;

[0045] Figure 7 is a schematic diagram of an MBS service processing apparatus according to an embodiment of this application;

[0046] Figure 8 is a schematic diagram of an MBS service indication device according to an embodiment of this application;

[0047] Figure 9 is a schematic block diagram of the system configuration of a terminal device according to an embodiment of this application;

[0048] Figure 10 is a schematic block diagram of the system configuration of a network device according to an embodiment of this application. Detailed Implementation

[0049] Referring to the accompanying drawings, the foregoing and other features of this application will become apparent from the following description. Specific embodiments of this application are specifically disclosed in the description and drawings, illustrating partial implementations in which the principles of this application may be employed. It should be understood that this application is not limited to the described embodiments; rather, it includes all modifications, variations, and equivalents falling within the scope of the appended claims.

[0050] In the embodiments of this application, the terms "first," "second," etc., are used to distinguish different elements by name, but do not indicate the spatial arrangement or chronological order of these elements, and these elements should not be limited by these terms. The term "and / or" includes any one or more of the terms listed in association and all combinations thereof. The terms "comprising," "including," "having," etc., refer to the presence of the stated features, elements, components, or assemblies, but do not exclude the presence or addition of one or more other features, elements, components, or assemblies.

[0051] In the embodiments of this application, the singular forms "a," "the," etc., including the plural forms, should be broadly understood as "a kind" or "a class" rather than limited to the meaning of "an." Furthermore, the term "the" should be understood to include both the singular and plural forms, unless the context explicitly indicates otherwise. Additionally, the term "according to" should be understood as "at least partially based on…," and the term "based on" should be understood as "at least partially based on…," unless the context explicitly indicates otherwise.

[0052] In the embodiments of this application, the term "communication network" or "wireless communication network" may refer to a network that conforms to any of the following communication standards, such as Long Term Evolution (LTE), LTE-Advanced (LTE-A), Wideband Code Division Multiple Access (WCDMA), High-Speed ​​Packet Access (HSPA), etc.

[0053] Furthermore, communication between devices in a communication system can be carried out according to communication protocols at any stage, including but not limited to the following communication protocols: 1G (generation), 2G, 2.5G, 2.75G, 3G, 4G, 4.5G and future 5G, New Radio (NR), and / or other currently known or future communication protocols.

[0054] In the embodiments of this application, the terms "network," "network device," or "network node" refer, for example, to a device in a communication system that connects a user equipment to a communication network and provides services to that user equipment. Network devices or network nodes may include, but are not limited to, the following devices: "nodes" and / or "donors" under the IAB architecture, base stations (BS), access points (AP), transmission and reception points (TRP), broadcast transmitters, mobile management entities (MME), gateways, servers, radio network controllers (RNC), base station controllers (BSC), and so on.

[0055] The term "base station" can include, but is not limited to, NodeBs (or NBs), evolved NodeBs (eNodeBs or eNBs), and 5G base stations (gNBs), etc. It can also include Remote Radio Heads (RRHs), Remote Radio Units (RRUs), relays, or low-power nodes (e.g., femto, pico, etc.). The term "base station" can include some or all of its functions. Each base station can provide communication coverage for a specific geographical area. For example, a 5G base station (gNB) can include one gNB CU and one or more gNB DUs, where the CU / DU is a logical node of a gNB with some of its functions. The term "cell" can refer to a base station and / or its coverage area, depending on the context in which the term is used. A gNB-DU supports one or more cells, and a cell is supported by only one gNB-DU.

[0056] In the embodiments of this application, the term "User Equipment" (UE) refers, for example, to a device that accesses a communication network and receives network services through a network device, and can also be called "Terminal Equipment" (TE). Terminal equipment can be fixed or mobile, and can also be called a mobile station (MS), terminal, subscriber station (SS), access terminal (AT), station, etc. For example, a terminal device served by an IAB node or IAB host under the IAB architecture.

[0057] The terminal device may include, but is not limited to, the following devices: cellular phone, personal digital assistant (PDA), wireless modem, wireless communication device, handheld device, machine-type communication device, laptop computer, cordless phone, smartphone, smartwatch, digital camera, etc.

[0058] For example, in scenarios such as the Internet of Things (IoT), terminal devices can also be machines or devices for monitoring or measurement, such as including but not limited to: machine-type communication (MTC) terminals, vehicle communication terminals, device-to-device (D2D) terminals, machine-to-machine (M2M) terminals, and so on.

[0059] In the embodiments of this application, "when," "under the circumstances," "for the situation of," and "if" all indicate based on one or more conditions or states, and these expressions can be used interchangeably.

[0060] The following examples illustrate the scenarios of embodiments of this application, but this application is not limited thereto.

[0061] Figure 2 is a schematic diagram of a communication system according to an embodiment of this application, illustrating the case with a terminal device and a network device as examples. As shown in Figure 2, the communication system 100 may include a network device 101 and a terminal device 102. For simplicity, Figure 2 only uses one terminal device and one network device as an example for illustration, but the embodiments of this application are not limited thereto.

[0062] In this embodiment of the application, network device 101 and terminal device 102 can transmit existing services or services that can be implemented in the future. For example, these services may include, but are not limited to: enhanced mobile broadband (eMBB), massive machine type communication (mMTC), and ultra-reliable and low-latency communication (URLLC), etc.

[0063] In the embodiments of this application, higher-layer signaling may be, for example, Radio Resource Control (RRC) signaling; for example, referred to as an RRC message, including MIB, system information, dedicated RRC messages; or referred to as an RRC information element. Higher-layer signaling may also be, for example, Medium Access Control (MAC) signaling; or referred to as a MAC control element. However, this application is not limited to these.

[0064] To address the aforementioned problems, various embodiments of this application will be described below with reference to the accompanying drawings. These embodiments are merely exemplary and not intended to limit the scope of this application.

[0065] First aspect of the embodiments

[0066] This application provides a method for processing MBS services, which is applied to a terminal device, such as terminal device 102 in FIG2.

[0067] Figure 3 is a schematic diagram of a method for processing MBS services according to an embodiment of this application. As shown in Figure 3, the method includes:

[0068] 301: The terminal device receives a first message sent by the network device, the first message including at least information about a first geographical region, the information about the first geographical region being used to indicate at least the service area of ​​the MBS service;

[0069] 302: The terminal device determines the service area of ​​the MBS service based on the information of the first geographical area; and

[0070] 303: The terminal device performs first processing at least based on the first message and / or the service area of ​​the MBS service.

[0071] In this embodiment of the application, the MBS service includes at least one of the MBS broadcast service and the MBS multicast service.

[0072] In this embodiment, the service area of ​​an MBS service can correspond to the MBS service itself; that is, different MBS services can correspond to different service areas. Furthermore, the service areas of different MBS services may be the same or partially overlap.

[0073] In this application embodiment, the "service area" of the MBS service can also be referred to as the intended service area of ​​the MBS service, or the predetermined service area of ​​the MBS service, or the agreed service area of ​​the MBS service, or the target service area of ​​the MBS service, that is, the target service area where the network device provides the MBS service.

[0074] In the embodiments of this application, the service area of ​​the MBS service can also be referred to as the service area related to the MBS service, or the service area of ​​the MBS service or the MBS service session, or the service area related to the MBS service or the MBS service session.

[0075] In this embodiment of the application, the first message includes at least one of the MCCH message and the SIB.

[0076] In this embodiment of the application, the MCCH message includes at least one of MBS broadcast configuration message (MBSBroadcastConfiguration) and MBS multicast configuration message (MBSMulticastConfiguration).

[0077] In the embodiments of this application, the SIB includes at least one of a first SIB and a second SIB.

[0078] For example, the first SIB is a new SIB specifically designed to indicate information about a first geographic region;

[0079] For example, the second SIB is an existing SIB related to MBS or NTN services.

[0080] As described above, the first message includes at least information about a first geographic region, which is used to indicate the service area of ​​the MBS service. In this embodiment, the information about the first geographic region includes at least one of the following:

[0081] Information about one or more second geographic regions;

[0082] One or more second geographic area identifiers (area IDs);

[0083] The second geographic region identifier and the mapping information of the second geographic region.

[0084] In the embodiments of this application, the information of multiple second geographic regions can also be referred to as the information of a column of second geographic regions or the information of a sequence of second geographic regions;

[0085] Multiple second geographic region identifiers can also be referred to as a column of second geographic region identifiers or a sequence of second geographic region identifiers.

[0086] In this embodiment of the application, the first geographical area is the geographical area corresponding to the service area of ​​the MBS service.

[0087] In this embodiment of the application, the first geographic region consists of one or more (one column) second geographic regions, and the second geographic region includes one or more (one column) geographic regions;

[0088] For example, the geographic region can be represented by a circle or a polygon. For instance, a circular geographic region can be represented by a reference location and a distance radius relative to that reference location, or a polygonal geographic region can be represented by the coordinates of a set of polygon vertices.

[0089] For example, a second geographic area identifier (area ID) is a unique identifier (area ID) assigned by a network device to each second geographic area;

[0090] In the embodiments of this application, the second geographic area information may also be referred to as MBS area information, MBS geographic area information, broadcast service area information, or broadcast service geographic area information, etc.

[0091] In this embodiment of the application, the information of the second geographic region includes a second geographic region identifier, and / or, the second geographic region includes one or more (a list of) geographic regions.

[0092] For example, the information of the second geographic region includes a second geographic region identifier and a geographic region included in the second geographic region, as shown in the following example:

[0093] For example, the information for the second geographic region includes a second geographic region identifier and multiple (one column) geographic regions included in the second geographic region, as shown in the following example:

[0094] In this embodiment of the application, the information of the first geographical region includes at least the service area information of the MBS service of the first cell.

[0095] For example, the first cell includes at least one of the serving cell of the terminal device, neighboring cells of the serving cell, and non-serving cells.

[0096] In this way, the terminal device can determine the service area of ​​the MBS service of the first cell (at least one of the serving cell, neighboring cells, and non-serving cells), so that when a terminal device that is interested in MBS or is receiving MBS service is switching or reselecting a cell, it can give priority to the cell that provides the MBS service that the terminal device is interested in, or maintain the continuity of the MBS service being received.

[0097] In this embodiment, the first geographical area indicated by the network device may or may not be related to the first cell. Figure 4 is a schematic diagram of the relationship between the first geographical area and the cell in this embodiment. The following description, in conjunction with Figure 4, will provide a detailed explanation.

[0098] In the first method of indicating the first geographic area, the first geographic area is related to the MBS service of the first cell and is not related to the coverage of the first cell. The scope of the first geographic area includes the geographic area corresponding to the entire service area of ​​the MBS service or MBS service session of the first cell.

[0099] In other words, the information of the first geographic region indicates the entire geographic region of the MBS service or the MBS service session, including geographic regions that do not overlap with the coverage of the first cell, i.e., indicating geographic regions related to and / or unrelated to the first cell of the MBS service or the MBS service session.

[0100] For example, as shown in Figures 4(a) and (b), the first geographic region includes two geographic regions. All the cells shown in the figure are cells used by network devices to provide the MBS service or the MBS service session. In addition, the range of the first geographic region related to the MBS service or the MBS service session of all cells in the figure is the same, that is, it includes the entire range of geographic region 1 and geographic region 2.

[0101] In some embodiments, the geographical area unrelated to the first cell also includes the indicated first geographical area and the coverage area of ​​the first cell do not overlap, that is, the service area of ​​the indicated first cell's MBS service is only related to the MBS service itself and is not related to the coverage area of ​​the first cell.

[0102] For example, the first cell is a cell that moves relative to the ground. The network equipment provides MBS services through the first cell. However, due to the movement of the first cell relative to the ground, there may be areas where the service area of ​​the MBS service is not available within the coverage area of ​​the first cell. For example, as shown in Figure 4(c), cell G is the first cell used by the network equipment to provide MBS services, but there is no service area of ​​the MBS service within its coverage area. That is, cell G and the first geographical area of ​​the MBS service of cell G do not overlap.

[0103] The first geographical region indication method described above is used to indicate the scope of the first geographical region. All cells providing the MBS service indicate the same service area for the MBS service or service session. In the absence of service areas for the MBS service of neighboring cells or non-serving cells indicated by network equipment, the terminal device can preferentially select cells providing the same MBS service based on the service area of ​​the MBS service indicated by the serving cell and on the basis of existing relevant specifications for MBS services, and maintain the continuity of MBS services during the handover process.

[0104] In the second indication method of the first geographic area, the first geographic area is related to the coverage of the first cell, and the scope of the first geographic area includes the geographic area corresponding to the service area of ​​the MBS service or MBS service session of the first cell that overlaps with the coverage of the first cell.

[0105] In other words, the information of the first geographic region indicates the entire range of the geographic region corresponding to the service area of ​​the MBS service or the MBS service session that overlaps with the first cell.

[0106] For example, as shown in Figure 4(a), the first geographic area related to the MBS service or the MBS service session of cell A, cell B and cell C is the same, that is, it only includes the entire range of geographic area 1; as shown in Figure 4(b), the first geographic area related to the MBS service or the MBS service session of cell A, cell B and cell C is the same, that is, it only includes the entire range of geographic area 2.

[0107] In the third indication method of the first geographic area, the first geographic area is related to the coverage of the first cell, and the scope of the first geographic area includes the overlapping part of the coverage of the first cell and the geographic area corresponding to the service area of ​​the MBS service or MBS service session of the first cell.

[0108] In other words, the information of the first geographic region indicates that the first cell has an overlapping geographic region with the service area corresponding to the MBS service or the MBS service session.

[0109] For example, as shown in Figure 4(a), the first geographic area of ​​cell A is the area where cell A overlaps with geographic area 1, the first geographic area of ​​cell B is the area where cell B overlaps with geographic area 1, and the first geographic area of ​​cell C is the area where cell C overlaps with geographic area 1, i.e., the entire cell C; when the third indication method is applied, the first geographic area of ​​each cell in Figure 4(a) and (b) related to the MBS service or the MBS service session is different.

[0110] When applying the third method of indicating the first geographical area, to ensure the continuity of MBS services during movement, when the terminal device receives MBS services from a serving cell, the terminal device needs the network device to indicate not only the service area of ​​the serving cell's MBS services but also the service areas of neighboring or non-serving cells. Specifically, when a neighboring or non-serving cell is considered the first cell, the network device needs to indicate the service area of ​​the MBS services in that cell, enabling the terminal device to know the service areas of the MBS services it is interested in within those neighboring or non-serving cells. For cells moving relative to the ground, the cell's coverage area is constantly changing, while the service area of ​​MBS services relative to the ground typically does not change frequently. When applying the third method of indicating the first geographical area, the overlap between the cell's coverage area and the MBS service area also changes continuously. The network device needs to constantly send updated first messages to indicate the service area of ​​MBS services in the new cells. However, when applying the first method of indicating the first geographical area, the network device does not need to frequently send first messages to adjust the service area of ​​MBS services.

[0111] Additionally, for example, when the first cell is a neighboring cell of the serving cell of the terminal device or a non-serving cell, the service area information of the MBS service of the first cell is indicated by the first message.

[0112] For example, the MCCH message, which is the first message, includes service area information of MBS services in neighboring cells or non-serving cells of the serving cell of the terminal device. This includes information indicating the service area of ​​MBS services in each neighboring cell or non-serving cell that provides MBS services, such as information of the first geographic area corresponding to the service area of ​​the MBS service, including one or more (a column) second geographic area information.

[0113] For example, the SIB21 related to MBS services, which is the first message, indicates the service area information of MBS services in neighboring cells or non-serving cells of the serving cell of the terminal device, including indicating the service area of ​​MBS services in each neighboring cell or non-serving cell used to provide MBS services.

[0114] The following example illustrates how one or more second geographic region identifiers can be used as the first message to indicate information about a first geographic region.

[0115] In the first indication method, the first message may include one or more public second geographic area identifiers, which are applied to all MBS service sessions contained in the first message.

[0116] In other words, one or more (one column) public second geographic area identifiers indicate the common service area of ​​all MBS service sessions contained in the first message. For example:

[0117] In the second indication method, the first message includes one or more second geographic area identifiers, and an MBS service session or session list mapped to each of the one or more second geographic area identifiers.

[0118] In other words, the service area of ​​an MBS service indicated by the same second geographic region identifier applies to all MBS services or session lists mapped to that second geographic region identifier. For example:

[0119] In the third indication method, the first message includes one or more second geographic area identifiers, and mapping information between the one or more second geographic area identifiers and each MBS service session.

[0120] In other words, it indicates one or a set of second geographical region identifiers corresponding to the service area of ​​each MBS service session. For example:

[0121] In the fourth indication method, each MBS service session information in the first message includes one or more (one column) second geographic area identifiers, which indicate the service area of ​​each MBS service session. For example:

[0122] In the first to fourth indication methods described above, the configuration of one or more (one column) second geographic area identifiers is optional. When one or more (one column) second geographic area identifiers do not appear, the service area used to indicate the session of the related MBS service includes the coverage of the entire serving cell of the terminal device, and / or the coverage of other first cells indicated in the first message, including the coverage of the first cells indicated in the list of adjacent cells that provide the same MBS service as the serving cell.

[0123] In operation 302, the terminal device determines the service area of ​​the MBS service based on the information of the first geographical region. In other words, the information of the first geographical region indicated by the network device enables the terminal device to determine the service area of ​​the MBS service. The specific determination method can be found in the relevant descriptions above, and will not be repeated here.

[0124] In operation 303, the terminal device performs first processing based at least on the first message and / or the service area of ​​the MBS service. For example, the terminal device also performs first processing based on the network device's configuration information regarding the MBS service.

[0125] In this embodiment of the application, the first process includes at least one of the following:

[0126] Determine whether the terminal device is located within the service area of ​​the MBS service;

[0127] Send a message to the network device indicating interest in MBS services;

[0128] Skip receiving MCCH information, which includes configuration and / or control information for the MBS service;

[0129] Receive (acquire) MCCH information;

[0130] Receive this MBS service.

[0131] In this embodiment of the application, the message indicating interest in MBS services may include the location information of the terminal device.

[0132] In this embodiment of the application, the first process for determining whether a terminal device is within the service area of ​​the MBS service includes at least: determining whether the terminal device is within the service area of ​​the MBS service based on the determined service area of ​​the MBS service and the location information of the terminal device.

[0133] In this embodiment of the application, when the terminal device is not within the service area of ​​any MBS service provided through the first cell, or when the terminal device leaves the service area of ​​all MBS services provided through the first cell, it is determined that the terminal device is not within the service area of ​​the MBS service.

[0134] In this embodiment of the application, when the terminal device meets the first condition, the terminal device performs the following first process: sending a message indicating interest in MBS services, such as an MBSInterestIndication message, to the network device, and / or skipping the reception of MCCH information.

[0135] The first condition includes at least one of the following:

[0136] This terminal device is a terminal device that is interested in MBS services;

[0137] The terminal device is not within the service area of ​​any of the MBS services;

[0138] The terminal device is not within the service area of ​​any MBS service that the terminal device is interested in.

[0139] The terminal device has left the service area of ​​all MBS services that the terminal device is interested in;

[0140] The terminal device is not within the service area of ​​any MBS service that the terminal device is interested in, and the distance between the terminal device and the nearest boundary of the service area of ​​the MBS service that the terminal device is interested in is greater than a first distance;

[0141] The terminal device leaves the service area of ​​all MBS services that the terminal device is interested in, and the departure distance of the terminal device from the last boundary of the service area of ​​the MBS services that the terminal device is interested in is greater than the second distance, and / or the departure time is greater than the first time length.

[0142] For example, the first distance, the second distance, and the first time duration can be indicated by the network device or determined by the terminal device.

[0143] For example, a message indicating interest in MBS services sent to the network device may contain the location information of the terminal device.

[0144] In this way, network devices may update the relevant configurations of MBS services based on the MBS interest indication message, such as adding new MBS services that the terminal device is interested in; modifying the service area of ​​the MBS services that the terminal device is interested in; or providing unicast services to the terminal device.

[0145] In this embodiment of the application, skipping the reception of MCCH information can be achieved through at least one of the following:

[0146] The terminal device uses the cell / tracking area list or tracking area list in the User Service Description (USD), or information about the first geographic area, to avoid receiving MCCH information or skip the process of receiving MCCH information. For example, the description is: when the UE is outside the MBS service area of ​​the MBS broadcast service, the UE implementation uses the cell / tracking area list in the USD or the service area of ​​the MBS service to avoid acquiring the MCCH.

[0147] The terminal device stops listening to the PDCCH used for MCCH transmission; for example, it stops listening to the PDCCH addressed by MCCH-RNTI, thereby stopping the acquisition of all MCCH information.

[0148] The terminal device determines whether there is an MCCH information change notification by listening to the PDCCH used for MCCH transmission. If no MCCH information change notification is received, it stops receiving MCCH information or does not initiate the process of receiving MCCH information.

[0149] The terminal device listens to the PDCCH used for MCCH transmission at a first time interval; for example, the first time interval is indicated by the network device or determined by the terminal device.

[0150] In this embodiment of the application, when the terminal device meets the second condition, the terminal device performs the following first process: receiving (acquiring) MCCH information, and / or sending a message indicating interest in MBS services to the network device.

[0151] The second condition includes at least one of the following:

[0152] The terminal device that is interested in MBS services receives the SIB as the first message, and the terminal device is within the service area of ​​at least one MBS service indicated by the SIB.

[0153] The terminal device interested in MBS services receives an SIB as the first message, which indicates that the service area for transmitting MBS services has changed.

[0154] When a terminal device interested in MBS services enters a cell providing SIB20, the service area of ​​the MBS services provided by that cell is indicated by the MCCH message as the first message. For example, a related description would be: A UE interested in receiving MBS broadcast services should apply the MCCH information acquisition procedure upon entering the cell providing SIB20 (e.g., upon power-on, following UE mobility). This also includes the service area of ​​the MBS services being indicated by the MCCH, for example, the first message being MBSBroadcastConfiguration or MBSMulticastConfiguration.

[0155] A terminal device interested in MBS services enters a cell providing SIB20, and the terminal device is within the service area of ​​at least one MBS service, which is a known service area for the terminal device. For example, a relevant description would be: A UE interested in receiving MBS broadcast services and within at least one of the (intended) service areas of an MBS service of interest to the UE shall apply the MCCH information acquisition procedure upon entering the cell providing SIB20 (e.g., upon power-on, after UE mobility). mobility); where the (expected) service area of ​​the MBS service is the service area of ​​the MBS service known to the terminal device. The service area of ​​the known MBS service is the service area of ​​the MBS service obtained by the terminal device through other cells before entering the cell providing SIB20, such as the first indication method of the range of the first geographical area mentioned above. The service area of ​​the MBS service indicated by the cell providing the same MBS service is the same, that is, it is the service area of ​​all the MBS services.

[0156] A terminal device interested in MBS services enters a cell providing SIB20, and the terminal device is within the service area of ​​at least one MBS service, the service area of ​​which is indicated by the SIB as the first message; for example, the relevant description is: A UE within at least one of the (intended) service areas interested in receiving MBS broadcast services shall apply the MCCH information acquisition procedure upon entering the cell providing SIB20 (e.g., upon power-on, following UE mobility).

[0157] A terminal device interested in MBS services enters the service area of ​​an MBS service and / or the nearest boundary of the service area of ​​the MBS service is greater than or equal to a third distance, or the terminal device interested in MBS services is not within the service area of ​​any interested MBS service and the nearest boundary of the service area of ​​an MBS service is equal to or less than a third distance; for example, the third distance is indicated by the network device or determined by the terminal device; for example, a UE interested to receive MBS broadcast services shall apply the MCCH information acquisition procedure upon entering an (intended) service area of ​​MBS (e.g., upon power on, following UE mobility); or for example, when a terminal device interested in receiving MBS services enters an (intended) service area of ​​MBS services, it sends an MBS Interest Indication to the network device.

[0158] The terminal device interested in MBS services enters the service area of ​​an MBS service of interest to the terminal device and / or the nearest boundary of the service area of ​​the MBS service is greater than or equal to a third distance, or the terminal device interested in MBS services is not within the service area of ​​any MBS service of interest and the nearest boundary of the service area of ​​an MBS service of interest to the terminal device is equal to or less than the third distance; for example, the third distance is indicated by the network device or determined by the terminal device.

[0159] A terminal device interested in MBS services receives SIB20 from a secondary cell (Scell), and the terminal device is within the service area of ​​at least one MBS service of that secondary cell, the service area of ​​which is indicated by the SIB or MCCH message as the first message; for example, the relevant description is: A terminal device interested in receiving MBS broadcast services and within the (intended) service area of ​​at least one MBS service of the SCell shall apply the MCCH information acquisition procedure upon receiving SIB20 of the SCell via dedicated signalling when it receives SIB20 of the SCell.

[0160] The terminal device interested in MBS services receives an MCCH information change notification, or the terminal device interested in MBS services receives an MCCH information change notification and the terminal device is at least within the service area of ​​an MBS service indicated by the SIB in the first message.

[0161] For example, the relevant description is: Upon receiving a change notification, a UE receiving or a UE within at least one of the (intended) service areas of MBS services interested in receiving MBS services transmitted using MBS broadcast acquires the new MCCH information starting from the same time slot.

[0162] For example, the relevant description is as follows: A UE within at least one of MBS intended service areas (interested) to receive MBS broadcast services shall apply the MCCH information acquisition procedure upon receiving a notification that the MCCH information has changed.

[0163] For example, the relevant description is: A UE interested to receive MBS broadcast services shall apply the MCCH information acquisition procedure upon receiving a notification that the MCCH information has changed.

[0164] A UE interested in MBS services receives a notification of MCCH information change due to the start of a new MBS service, or a UE interested in MBS services receives a notification of MCCH information change and the UE is at least within the service area of ​​one MBS service indicated by the SIB in the first message; for example, the relevant description is as follows: A UE within at least one of MBS (intended) service areas interested to receive MBS broadcast services shall apply the MCCH information acquisition procedure upon receiving a notification that the MCCH information has changed due to the start of a new MBS service(s));

[0165] The terminal device interested in MBS services receives a notification of MCCH information change due to MCCH modification, or the terminal device interested in MBS services receives a notification of MCCH information change and the terminal device is at least within the service area of ​​one of the MBS services indicated by the SIB in the first message; for example, the relevant description is: A UE within at least one of MBS (intended) service area interested to receive MBS broadcast services shall apply the MCCH information acquisition procedure upon receiving a notification that the MCCH information has changed due to the start of new MBS service(s).

[0166] In this embodiment of the application, when the terminal device meets the third condition, the terminal device performs the following first process: receiving the MBS service.

[0167] The third condition includes: the terminal device is located within the service area of ​​at least one MBS service that the terminal device is interested in.

[0168] As can be seen from the above embodiments, the terminal device can determine the service area of ​​the MBS service based on the information of the first geographical area in the first message indicated by the network device, and thus can further perform appropriate processing based on the first message and / or the determined service area of ​​the MBS service.

[0169] For example, terminal devices can determine whether they are within the service area of ​​MBS services based on their own location information. When a terminal device is not within the service area of ​​any MBS service it is interested in, it can promptly notify the network equipment so that subsequent network adjustments and processing can be carried out.

[0170] Furthermore, it avoids unnecessary monitoring and reception of MCCH; and when the terminal device detects that the MCCH configuration may have changed, the terminal device can listen to and receive the MCCH of MBS as well as the content of MBS service itself, preventing the missed MBS reception.

[0171] Second aspect of the embodiments

[0172] This application provides an MBS service indication method, which is applied to a network device and corresponds to the MBS service processing method applied to a terminal device described in the first aspect embodiment. The same or corresponding content can be referred to the description in the first aspect embodiment.

[0173] This method is applied to network devices, such as network device 101 in Figure 2.

[0174] Figure 5 is a schematic diagram of an MBS service indication method according to an embodiment of this application. As shown in Figure 5, the method includes:

[0175] 501: The network device sends the first message to the terminal device.

[0176] The first message includes at least information about a first geographic region, which is used to indicate the service area of ​​the MBS business.

[0177] In this embodiment of the application, the MBS service includes at least one of the MBS broadcast service and the MBS multicast service.

[0178] In this embodiment, the service area of ​​an MBS service can correspond to the MBS service itself; that is, different MBS services can correspond to different service areas. Furthermore, the service areas of different MBS services may be the same or partially overlap.

[0179] In this application embodiment, the "service area" of the MBS service can also be referred to as the intended service area of ​​the MBS service, or the predetermined service area of ​​the MBS service, or the agreed service area of ​​the MBS service, or the target service area of ​​the MBS service, that is, the target service area where the network device provides the MBS service.

[0180] In the embodiments of this application, the service area of ​​the MBS service can also be referred to as the service area related to the MBS service, or the service area of ​​the MBS service or the MBS service session, or the service area related to the MBS service or the MBS service session.

[0181] In this embodiment of the application, the first message includes at least one of the MCCH message and the SIB.

[0182] In this embodiment of the application, the MCCH message includes at least one of MBS broadcast configuration message (MBSBroadcastConfiguration) and MBS multicast configuration message (MBSMulticastConfiguration).

[0183] In the embodiments of this application, the SIB includes at least one of a first SIB and a second SIB.

[0184] For example, the first SIB is a new SIB specifically designed to indicate information about a first geographic region;

[0185] For example, the second SIB is an existing SIB related to MBS or NTN services.

[0186] As described above, the first message includes at least information about a first geographic region, which is used to indicate the service area of ​​the MBS service. In this embodiment, the information about the first geographic region includes at least one of the following:

[0187] Information about one or more second geographic regions;

[0188] One or more second geographic area identifiers (area IDs);

[0189] The second geographic region identifier and the mapping information of the second geographic region.

[0190] In the embodiments of this application, the information of multiple second geographic regions can also be referred to as the information of a column of second geographic regions or the information of a sequence of second geographic regions;

[0191] Multiple second geographic region identifiers can also be referred to as a column of second geographic region identifiers or a sequence of second geographic region identifiers.

[0192] In this embodiment of the application, the first geographical area is the geographical area corresponding to the service area of ​​the MBS service.

[0193] In this embodiment of the application, the first geographic region consists of one or more (one column) second geographic regions, and the second geographic region includes one or more (one column) geographic regions;

[0194] For example, the geographic region can be represented by a circle or a polygon. For instance, a circular geographic region can be represented by a reference location and a distance radius relative to that reference location, or a polygonal geographic region can be represented by the coordinates of a set of polygon vertices.

[0195] For example, a second geographic area identifier (area ID) is a unique identifier (area ID) assigned by a network device to each second geographic area;

[0196] In the embodiments of this application, the second geographic area information may also be referred to as MBS area information, MBS geographic area information, broadcast service area information, or broadcast service geographic area information, etc.

[0197] In this embodiment of the application, the information of the second geographic region includes a second geographic region identifier, and / or, the second geographic region includes one or more (a list of) geographic regions.

[0198] In this embodiment of the application, the information of the first geographical region includes at least the service area information of the MBS service of the first cell.

[0199] For example, the first cell includes at least one of the serving cell of the terminal device, neighboring cells of the serving cell, and non-serving cells.

[0200] In this embodiment of the application, the first geographical area indicated by the network device may be related to the first cell or may not be related to the first cell.

[0201] In the first method of indicating the first geographic area, the first geographic area is related to the MBS service of the first cell and is not related to the coverage of the first cell. The scope of the first geographic area includes the geographic area corresponding to the entire service area of ​​the MBS service or MBS service session of the first cell.

[0202] In other words, the information of the first geographic region indicates the entire geographic region of the MBS service or the MBS service session, including geographic regions that do not overlap with the coverage of the first cell, i.e., indicating geographic regions related to and / or unrelated to the first cell of the MBS service or the MBS service session.

[0203] In the second indication method of the first geographic area, the first geographic area is related to the coverage of the first cell, and the scope of the first geographic area includes the geographic area corresponding to the service area of ​​the MBS service or MBS service session of the first cell that overlaps with the coverage of the first cell.

[0204] In other words, the information of the first geographic region indicates the entire range of the geographic region corresponding to the service area of ​​the MBS service or the MBS service session that overlaps with the first cell.

[0205] In the third indication method of the first geographic area, the first geographic area is related to the coverage of the first cell, and the scope of the first geographic area includes the overlapping part of the coverage of the first cell and the geographic area corresponding to the service area of ​​the MBS service or MBS service session of the first cell.

[0206] In other words, the information of the first geographic region indicates that the first cell has an overlapping geographic region with the service area corresponding to the MBS service or the MBS service session.

[0207] The following example illustrates how one or more second geographic region identifiers can be used as the first message to indicate information about a first geographic region.

[0208] In the first indication method, the first message may include one or more public second geographic area identifiers, which are applied to all MBS service sessions contained in the first message.

[0209] In other words, one or more (one column) public second geographic area identifiers indicate the common service area of ​​all MBS service sessions contained in the first message.

[0210] In the second indication method, the first message includes one or more second geographic area identifiers, and an MBS service session or session list mapped to each of the one or more second geographic area identifiers.

[0211] In other words, the service area of ​​an MBS service indicated by the same second geographic area identifier applies to all MBS services or session lists mapped to that second geographic area identifier.

[0212] In the third indication method, the first message includes one or more second geographic area identifiers, and mapping information between the one or more second geographic area identifiers and each MBS service session.

[0213] In other words, it indicates one or a set of second geographic area identifiers corresponding to the service area of ​​each MBS service session.

[0214] In the fourth indication method, each MBS service session information in the first message includes one or more (one column) second geographic area identifiers, which indicate the service area of ​​each MBS service session.

[0215] In the first to fourth indication methods described above, the configuration of one or more (one column) second geographic area identifiers is optional. When one or more (one column) second geographic area identifiers do not appear, the service area used to indicate the session of the related MBS service includes the coverage of the entire serving cell of the terminal device, and / or the coverage of other first cells indicated in the first message, including the coverage of the first cells indicated in the list of adjacent cells that provide the same MBS service as the serving cell.

[0216] For specific examples of the above content, please refer to the relevant descriptions in the first aspect embodiment, which will not be repeated here.

[0217] In this embodiment of the application, the method may further include: the network device sending first configuration information to the terminal device, the first configuration information including at least one of the following:

[0218] The first time length is the threshold of the time length during which the terminal device leaves the last boundary of the service area of ​​the MBS service of interest.

[0219] The first distance is the distance threshold between the terminal device and the nearest boundary of any MBS service it is not in the service area of.

[0220] The second distance is the distance threshold at which the terminal device leaves the last boundary of the service area of ​​the MBS service of interest;

[0221] The third distance is the distance threshold between the terminal device interested in the MBS service and the nearest boundary of the MBS service area;

[0222] The first time interval is the time interval during which the terminal device listens for the PDCCH used for MCCH transmission when it skips the reception of MCCH information.

[0223] In this embodiment of the application, the first configuration information may be sent in the first message, or the first configuration information may be sent separately from the first message.

[0224] In the embodiments of this application, any two of the first distance, the second distance, and the third distance may be the same or different.

[0225] Figure 6 is an interactive diagram of an MBS service processing method according to an embodiment of this application. The method includes:

[0226] 601: The network device sends a first message to the terminal device, the first message including at least information about a first geographic region, the information about the first geographic region being used to indicate at least the service area of ​​the MBS service;

[0227] 602: The terminal device determines the service area of ​​the MBS service based on the information of the first geographical area;

[0228] 603: The terminal device performs first processing at least based on the first message and / or the service area of ​​the MBS service.

[0229] In the embodiments of this application, the specific implementation of the above operations can be referred to the relevant descriptions in the embodiments of the first aspect, which will not be repeated here.

[0230] As can be seen from the above embodiments, the network device indicates a first message to the terminal device, enabling the terminal device to determine the service area of ​​the MBS service based on the information of the first geographical area in the first message, thereby enabling it to perform appropriate processing based on the first message and / or the determined service area of ​​the MBS service.

[0231] For example, terminal devices can determine whether they are within the service area of ​​MBS services based on their own location information. When a terminal device is not within the service area of ​​any MBS service it is interested in, it can promptly notify the network equipment so that subsequent network adjustments and processing can be carried out.

[0232] Furthermore, it avoids unnecessary monitoring and reception of MCCH; and when the terminal device detects that the MCCH configuration may have changed, the terminal device can listen to and receive the MCCH of MBS as well as the content of MBS service itself, preventing the missed MBS reception.

[0233] Third aspect of the embodiments

[0234] This application provides an MBS service processing apparatus, which is installed in a terminal device. Since the principle by which this apparatus solves the problem is similar to the method in the first aspect embodiment, its specific implementation can refer to the implementation of the method described in the first aspect embodiment; the same or related parts will not be repeated.

[0235] Figure 7 is a schematic diagram of an MBS service processing apparatus according to an embodiment of this application. As shown in Figure 7, the MBS service processing apparatus 700 includes:

[0236] Receiver 701 receives a first message sent by a network device, the first message including at least information about a first geographic region, the information about the first geographic region being used to indicate at least the service area of ​​the MBS service.

[0237] The processor 702 determines the service area of ​​the MBS service based on information from the first geographical region; and performs first processing based at least on the first message and / or the service area of ​​the MBS service.

[0238] In this embodiment of the application, the information of the first geographical region includes at least one of the following:

[0239] Information about one or more second geographic regions;

[0240] One or more second geographic area identifiers (area IDs);

[0241] The second geographic region identifier and the mapping information of the second geographic region.

[0242] In this embodiment of the application, the information of the second geographic region includes a second geographic region identifier and / or one or more geographic regions included in the second geographic region.

[0243] In this embodiment of the application, the information of the first geographical region includes at least the service area information of the MBS service of the first cell.

[0244] In this embodiment of the application, the first cell includes at least one of the serving cell of the terminal device, the neighboring cells of the serving cell, and the non-serving cell.

[0245] In this embodiment of the application, the scope of the first geographical region includes one of the following:

[0246] The geographic regions corresponding to all service areas of MBS services or MBS service sessions.

[0247] The geographical area corresponding to the service area of ​​MBS services or MBS service sessions that overlap with the first cell.

[0248] The geographical area corresponding to the overlapping area between the first cell and the service area of ​​MBS service or MBS service session.

[0249] In this embodiment of the application, the first message includes at least one of the following messages:

[0250] The MCCH message includes at least one of the MBS broadcast configuration message (MBSBroadcastConfiguration) and the MBS multicast configuration message (MBSMulticastConfiguration);

[0251] The SIB includes at least one of a first SIB and a second SIB.

[0252] In this embodiment of the application, the first message includes one or more public second geographic area identifiers.

[0253] The public one or more second geographic area identifiers are applied to all MBS business sessions contained in the first message.

[0254] In this embodiment of the application, the first message includes one or more second geographic region identifiers, and an MBS service session or session list mapped to each of the one or more second geographic region identifiers.

[0255] In this embodiment of the application, the first message includes one or more second geographic region identifiers, and mapping information between the one or more second geographic region identifiers and each MBS service session.

[0256] In this embodiment of the application, each MBS service session information in the first message includes one or more second geographic area identifiers, which indicate the service area of ​​each MBS service session.

[0257] In this embodiment of the application, the first process includes at least one of the following:

[0258] Determine whether the terminal device is located within the service area of ​​the MBS service;

[0259] Send a message to the network device indicating interest in MBS services;

[0260] Skip receiving MCCH information, which includes configuration and / or control information for the MBS service;

[0261] Receive MCCH information;

[0262] Receive this MBS service.

[0263] In this embodiment of the application, the message indicating interest in MBS services may include the location information of the terminal device.

[0264] In this embodiment of the application, when the terminal device meets the first condition, the processor performs the following first process: sending a message indicating interest in MBS services to the network device, and / or skipping the reception of MCCH information.

[0265] The first condition includes at least one of the following:

[0266] This terminal device is a terminal device that is interested in MBS services;

[0267] The terminal device is not within the service area of ​​any of the MBS services;

[0268] The terminal device is not within the service area of ​​any MBS service that the terminal device is interested in.

[0269] The terminal device has left the service area of ​​all MBS services that the terminal device is interested in;

[0270] The terminal device is not within the service area of ​​any MBS service that the terminal device is interested in, and the distance between the terminal device and the nearest boundary of the service area of ​​the MBS service that the terminal device is interested in is greater than a first distance;

[0271] The terminal device leaves the service area of ​​all MBS services that the terminal device is interested in, and the departure distance of the terminal device from the last boundary of the service area of ​​the MBS services that the terminal device is interested in is greater than the second distance, and / or the departure time is greater than the first time length.

[0272] In this embodiment of the application, the skipping of MCCH information reception is achieved through at least one of the following:

[0273] The terminal device uses the cell list or tracking area list in the user service description, or the information of the first geographic area, to implement the process of avoiding or skipping the reception of MCCH information.

[0274] The terminal device stops listening to the PDCCH used for MCCH transmission;

[0275] The terminal device determines whether there is an MCCH information change notification by listening to the PDCCH used for MCCH transmission. If no MCCH information change notification is received, it stops receiving MCCH information or does not initiate the process of receiving MCCH information.

[0276] The terminal device listens to the PDCCH used for MCCH transmission at a first time interval.

[0277] In this embodiment of the application, when the terminal device meets the second condition, the processor performs the following first process: receiving MCCH information and / or sending a message indicating interest in MBS services to the network device.

[0278] The second condition includes at least one of the following:

[0279] The terminal device that is interested in MBS services receives the SIB as the first message, and the terminal device is within the service area of ​​at least one MBS service indicated by the SIB.

[0280] The terminal device interested in MBS services receives an SIB as the first message, which indicates that the service area for transmitting MBS services has changed.

[0281] The terminal device interested in MBS services enters a cell that provides SIB20, and the service area of ​​the MBS services provided by the cell that provides SIB20 is indicated by the MCCH message as the first message.

[0282] The terminal device interested in MBS services enters a cell that provides SIB20, and the terminal device is within the service area of ​​at least one MBS service, which is a service area known to the terminal device.

[0283] The terminal device interested in MBS services enters a cell that provides SIB20, and the terminal device is within the service area of ​​at least one MBS service, the service area of ​​which is indicated by the SIB as the first message.

[0284] The terminal device that is interested in MBS services enters the service area of ​​an MBS service and / or the nearest boundary of the service area of ​​the MBS service is greater than or equal to the third distance, or the terminal device that is interested in MBS services is not in the service area of ​​any MBS service of interest and the nearest boundary of the service area of ​​an MBS service is equal to or less than the third distance.

[0285] The terminal device that is interested in MBS services enters the service area of ​​an MBS service that is of interest to the terminal device and / or the nearest boundary of the service area of ​​the MBS service that the terminal device is greater than or equal to the third distance; or the terminal device that is interested in MBS services is not in the service area of ​​any MBS service that is of interest to the terminal device and the nearest boundary of the service area of ​​an MBS service that the terminal device is of interest to the terminal device is equal to or less than the third distance.

[0286] The terminal device interested in MBS services received SIB20 from the secondary cell, and the terminal device was within the service area of ​​MBS services of at least one of the secondary cells, the service area of ​​which was indicated by the SIB or MCCH message as the first message.

[0287] The terminal device interested in MBS services receives an MCCH information change notification, or the terminal device interested in MBS services receives an MCCH information change notification and the terminal device is at least within the service area of ​​an MBS service indicated by the SIB in the first message.

[0288] The terminal device interested in MBS services receives a notification of MCCH information change due to the start of a new MBS service, or the terminal device interested in MBS services receives a notification of MCCH information change and the terminal device is at least within the service area of ​​an MBS service indicated by the SIB in the first message.

[0289] The terminal device interested in MBS services receives a notification of MCCH information change due to MCCH modification, or the terminal device interested in MBS services receives a notification of MCCH information change and the terminal device is at least within the service area of ​​one of the MBS services indicated by the SIB as the first message.

[0290] In this embodiment of the application, when the terminal device meets the third condition, the processor performs the following first process: receiving the MBS service.

[0291] The third condition includes: the terminal device is located within the service area of ​​at least one MBS service that the terminal device is interested in.

[0292] In this embodiment of the application, the MBS service includes at least one of the MBS broadcast service and the MBS multicast service.

[0293] As can be seen from the above embodiments, the terminal device can determine the service area of ​​the MBS service based on the information of the first geographical area in the first message indicated by the network device, and thus can further perform appropriate processing based on the first message and / or the determined service area of ​​the MBS service.

[0294] For example, terminal devices can determine whether they are within the service area of ​​MBS services based on their own location information. When a terminal device is not within the service area of ​​any MBS service it is interested in, it can promptly notify the network equipment so that subsequent network adjustments and processing can be carried out.

[0295] Furthermore, it avoids unnecessary monitoring and reception of MCCH; and when the terminal device detects that the MCCH configuration may have changed, the terminal device can listen to and receive the MCCH of MBS as well as the content of MBS service itself, preventing the missed MBS reception.

[0296] Fourth aspect of the embodiment

[0297] This application provides an MBS service indication device, which is applied to a network device. Since the principle by which this device solves the problem is similar to the method in the second aspect embodiment, its specific implementation can refer to the implementation of the method described in the second aspect embodiment; the same or related parts will not be repeated.

[0298] Figure 8 is a schematic diagram of an MBS service indication device according to an embodiment of this application. As shown in Figure 8, the MBS service indication device 800 includes:

[0299] Transmitter 801 sends the first message to the terminal device.

[0300] The first message includes at least information about a first geographic region, which is used to indicate the service area of ​​the MBS business.

[0301] In this embodiment of the application, the first message includes at least one of the MCCH message and the SIB.

[0302] In this embodiment of the application, the MCCH message includes at least one of MBS broadcast configuration message (MBSBroadcastConfiguration) and MBS multicast configuration message (MBSMulticastConfiguration).

[0303] In the embodiments of this application, the SIB includes at least one of a first SIB and a second SIB.

[0304] For example, the first SIB is a new SIB specifically designed to indicate information about a first geographic region;

[0305] For example, the second SIB is an existing SIB related to MBS or NTN services.

[0306] As described above, the first message includes at least information about a first geographic region, which is used to indicate the service area of ​​the MBS service. In this embodiment, the information about the first geographic region includes at least one of the following:

[0307] Information about one or more second geographic regions;

[0308] One or more second geographic area identifiers (area IDs);

[0309] The second geographic region identifier and the mapping information of the second geographic region.

[0310] In the embodiments of this application, the information of multiple second geographic regions can also be referred to as the information of a column of second geographic regions or the information of a sequence of second geographic regions;

[0311] Multiple second geographic region identifiers can also be referred to as a column of second geographic region identifiers or a sequence of second geographic region identifiers.

[0312] In this embodiment of the application, the first geographical area is the geographical area corresponding to the service area of ​​the MBS service.

[0313] In this embodiment of the application, the first geographic region consists of one or more (one column) second geographic regions, and the second geographic region includes one or more (one column) geographic regions;

[0314] For example, the geographic region can be represented by a circle or a polygon. For instance, a circular geographic region can be represented by a reference location and a distance radius relative to that reference location, or a polygonal geographic region can be represented by the coordinates of a set of polygon vertices.

[0315] For example, a second geographic area identifier (area ID) is a unique identifier (area ID) assigned by a network device to each second geographic area;

[0316] In the embodiments of this application, the second geographic area information may also be referred to as MBS area information, MBS geographic area information, broadcast service area information, or broadcast service geographic area information, etc.

[0317] In this embodiment of the application, the information of the second geographic region includes a second geographic region identifier, and / or, the second geographic region includes one or more (a list of) geographic regions.

[0318] In this embodiment of the application, the information of the first geographical region includes at least the service area information of the MBS service of the first cell.

[0319] For example, the first cell includes at least one of the serving cell of the terminal device, neighboring cells of the serving cell, and non-serving cells.

[0320] In this embodiment of the application, the first geographical area indicated by the network device may be related to the first cell or may not be related to the first cell.

[0321] In the first method of indicating the first geographic area, the first geographic area is related to the MBS service of the first cell and is not related to the coverage of the first cell. The scope of the first geographic area includes the geographic area corresponding to the entire service area of ​​the MBS service or MBS service session of the first cell.

[0322] In other words, the information of the first geographic region indicates the entire geographic region of the MBS service or the MBS service session, including geographic regions that do not overlap with the coverage of the first cell, i.e., indicating geographic regions related to and / or unrelated to the first cell of the MBS service or the MBS service session.

[0323] In the second indication method of the first geographic area, the first geographic area is related to the coverage of the first cell, and the scope of the first geographic area includes the geographic area corresponding to the service area of ​​the MBS service or MBS service session of the first cell that overlaps with the coverage of the first cell.

[0324] In other words, the information of the first geographic region indicates the entire range of the geographic region corresponding to the service area of ​​the MBS service or the MBS service session that overlaps with the first cell.

[0325] In the third indication method of the first geographic area, the first geographic area is related to the coverage of the first cell, and the scope of the first geographic area includes the overlapping part of the coverage of the first cell and the geographic area corresponding to the service area of ​​the MBS service or MBS service session of the first cell.

[0326] In other words, the information of the first geographic region indicates that the first cell has an overlapping geographic region with the service area corresponding to the MBS service or the MBS service session.

[0327] The following example illustrates how one or more second geographic region identifiers can be used as the first message to indicate information about a first geographic region.

[0328] In the first indication method, the first message may include one or more public second geographic area identifiers, which are applied to all MBS service sessions contained in the first message.

[0329] In other words, one or more (one column) public second geographic area identifiers indicate the common service area of ​​all MBS service sessions contained in the first message.

[0330] In the second indication method, the first message includes one or more second geographic area identifiers, and an MBS service session or session list mapped to each of the one or more second geographic area identifiers.

[0331] In other words, the service area of ​​an MBS service indicated by the same second geographic area identifier applies to all MBS services or session lists mapped to that second geographic area identifier.

[0332] In the third indication method, the first message includes one or more second geographic area identifiers, and mapping information between the one or more second geographic area identifiers and each MBS service session.

[0333] In other words, it indicates one or a set of second geographic area identifiers corresponding to the service area of ​​each MBS service session.

[0334] In the fourth indication method, each MBS service session information in the first message includes one or more (one column) second geographic area identifiers, which indicate the service area of ​​each MBS service session.

[0335] In the first to fourth indication methods described above, the configuration of one or more (one column) second geographic area identifiers is optional. When one or more (one column) second geographic area identifiers do not appear, the service area used to indicate the session of the related MBS service includes the entire service cell coverage of the terminal device, and / or the coverage of other first cells indicated in the first message, including the coverage of the first cells indicated in the list of adjacent cells that provide the same MBS service as the service cell.

[0336] For specific examples of the above content, please refer to the relevant descriptions in the first aspect embodiment, which will not be repeated here.

[0337] In this embodiment of the application, the transmitter 801 may also transmit first configuration information, which includes at least one of the following:

[0338] The first time length is the threshold of the time length during which the terminal device leaves the last boundary of the service area of ​​the MBS service of interest.

[0339] The first distance is the distance threshold between the terminal device and the nearest boundary of any MBS service it is not in the service area of.

[0340] The second distance is the distance threshold at which the terminal device leaves the last boundary of the service area of ​​the MBS service of interest;

[0341] The third distance is the distance threshold between the terminal device interested in the MBS service and the nearest boundary of the MBS service area;

[0342] The first time interval is the time interval during which the terminal device listens for the PDCCH used for MCCH transmission when it skips the reception of MCCH information.

[0343] In this embodiment of the application, the first configuration information may be sent in the first message, or the first configuration information may be sent separately from the first message.

[0344] In the embodiments of this application, any two of the first distance, the second distance, and the third distance may be the same or different.

[0345] As can be seen from the above embodiments, the network device indicates a first message to the terminal device, enabling the terminal device to determine the service area of ​​the MBS service based on the information of the first geographical area in the first message, thereby enabling it to perform appropriate processing based on the first message and / or the determined service area of ​​the MBS service.

[0346] For example, terminal devices can determine whether they are within the service area of ​​MBS services based on their own location information. When a terminal device is not within the service area of ​​any MBS service it is interested in, it can promptly notify the network equipment so that subsequent network adjustments and processing can be carried out.

[0347] Furthermore, it avoids unnecessary monitoring and reception of MCCH; and when the terminal device detects that the MCCH configuration may have changed, the terminal device can listen to and receive the MCCH of MBS as well as the content of MBS service itself, preventing the missed MBS reception.

[0348] Fifth aspect of the embodiment

[0349] This application provides a terminal device that includes a processing apparatus for MBS services according to an embodiment of the third aspect.

[0350] Figure 9 is a schematic block diagram of the system configuration of a terminal device according to an embodiment of this application. As shown in Figure 9, the terminal device 900 may include a processor 910 and a memory 920; the memory 920 is coupled to the processor 910. It is worth noting that this figure is exemplary; other types of structures may be used to supplement or replace this structure to implement telecommunications functions or other functions.

[0351] In one implementation, the functionality of the MBS service processing device can be integrated into the processor 910.

[0352] The processor 910 is configured to: receive a first message sent by a network device, the first message including at least information about a first geographic region, the information about the first geographic region being used at least to indicate the service area of ​​the MBS service; determine the service area of ​​the MBS service based on the information about the first geographic region; and perform a first process based at least on the first message and / or the service area of ​​the MBS service.

[0353] In another embodiment, the MBS service processing device can be configured separately from the processor 910. For example, the MBS service processing device can be configured as a chip connected to the processor 910, and the functions of the MBS service processing device can be realized through the control of the processor 910.

[0354] As shown in Figure 9, the terminal device 900 may further include: a communication module 930, an input unit 940, a display 950, and a power supply 960. It is worth noting that the terminal device 900 does not necessarily include all the components shown in Figure 9; furthermore, the terminal device 900 may also include components not shown in Figure 9, which can be found in related technologies.

[0355] As shown in Figure 9, the processor 910, sometimes also referred to as a controller or operation control, may include a microprocessor or other processor device and / or logic device. The processor 910 receives input and controls the operation of various components of the terminal device 900.

[0356] The memory 920 may be, for example, one or more of a cache, flash memory, hard drive, removable medium, volatile memory, non-volatile memory, or other suitable devices. It can store various types of data, and also programs for executing related information. The processor 910 can execute the program stored in the memory 920 to perform information storage or processing, etc. The functions of other components are similar to those in existing systems and will not be described further here. The components of the terminal device 900 can be implemented using dedicated hardware, firmware, software, or a combination thereof without departing from the scope of the invention.

[0357] As can be seen from the above embodiments, the terminal device can determine the service area of ​​the MBS service based on the information of the first geographical area in the first message indicated by the network device, and thus can further perform appropriate processing based on the first message and / or the determined service area of ​​the MBS service.

[0358] For example, terminal devices can determine whether they are within the service area of ​​MBS services based on their own location information. When a terminal device is not within the service area of ​​any MBS service it is interested in, it can promptly notify the network equipment so that subsequent network adjustments and processing can be carried out.

[0359] Furthermore, it avoids unnecessary monitoring and reception of MCCH; and when the terminal device detects that the MCCH configuration may have changed, the terminal device can listen to and receive the MCCH of MBS as well as the content of MBS service itself, preventing the missed MBS reception.

[0360] Implementation of the sixth aspect

[0361] This application provides a network device that includes an indication device for MBS services according to an embodiment of the fourth aspect.

[0362] Figure 10 is a schematic block diagram of the system configuration of a network device according to an embodiment of this application. As shown in Figure 10, the network device 1000 may include a processor 1010 and a memory 1020; the memory 1020 is coupled to the processor 1010. The memory 1020 can store various data; in addition, it also stores an information processing program 1030, and executes the program 1030 under the control of the processor 1010 to receive various information sent by terminal devices and send various information to terminal devices.

[0363] In one implementation, the function of the MBS service indication device can be integrated into the processor 1010.

[0364] The processor 1010 can be configured to send a first message from the network device to the terminal device, the first message including at least information about a first geographical region, the information about the first geographical region being used to indicate at least the service area of ​​the MBS service.

[0365] In another embodiment, the MBS service indicator can be configured separately from the processor 1010. For example, the MBS service indicator can be configured as a chip connected to the processor 1010, and the function of the MBS service indicator can be realized through the control of the processor 1010.

[0366] In addition, as shown in Figure 10, the network device 1000 may also include a transceiver 1040 and an antenna 1050, etc.; the functions of the above components are similar to those in the prior art, and will not be described in detail here. It is worth noting that the network device 1000 does not necessarily have to include all the components shown in Figure 10; furthermore, the network device 1000 may also include components not shown in Figure 10, which can be referred to in the prior art.

[0367] As can be seen from the above embodiments, the network device indicates a first message to the terminal device, enabling the terminal device to determine the service area of ​​the MBS service based on the information of the first geographical area in the first message, thereby enabling it to perform appropriate processing based on the first message and / or the determined service area of ​​the MBS service.

[0368] For example, terminal devices can determine whether they are within the service area of ​​MBS services based on their own location information. When a terminal device is not within the service area of ​​any MBS service it is interested in, it can promptly notify the network equipment so that subsequent network adjustments and processing can be carried out.

[0369] Furthermore, it avoids unnecessary monitoring and reception of MCCH; and when the terminal device detects that the MCCH configuration may have changed, the terminal device can listen to and receive the MCCH of MBS as well as the content of MBS service itself, preventing the missed MBS reception.

[0370] Seventh aspect of the embodiment

[0371] This application provides a communication system, including a terminal device according to an embodiment of the fifth aspect and / or a network device according to an embodiment of the sixth aspect. Specific details can be found in the descriptions of the embodiments of the fifth and sixth aspects.

[0372] For example, the structure of the communication system can be seen in FIG2. As shown in FIG2, the communication system 100 includes a network device 101 and a terminal device 102. The terminal device 102 may be the same as the terminal device described in the fifth aspect embodiment, and / or the network device 101 may be the same as the network device described in the sixth aspect embodiment. Repeated content will not be described again.

[0373] The apparatus and methods described above in this application can be implemented in hardware or in combination with software. This application relates to a computer-readable program that, when executed by a logic component, enables the logic component to implement the apparatus or components described above, or to implement the various methods or steps described above. Logic components include, for example, field-programmable logic devices (FPGAs), microprocessors, and processors used in computers. This application also relates to storage media for storing the above programs, such as hard disks, magnetic disks, optical disks, DVDs, and flash memory.

[0374] The methods / apparatus described in conjunction with the embodiments of this application can be directly embodied in hardware, software modules executed by a processor, or a combination of both. For example, one or more and / or one or more combinations of functional block diagrams shown in FIG7 can correspond to various software modules in a computer program flow, or to various hardware modules. These software modules can correspond to the various steps shown in FIG3, respectively. These hardware modules can, for example, be implemented by embedding these software modules using a field-programmable gate array (FPGA).

[0375] The software module can reside in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, removable disk, CD-ROM, or any other form of storage medium known in the art. A storage medium can be coupled to the processor, enabling the processor to read information from and write information to the storage medium; or the storage medium can be an integral part of the processor. The processor and storage medium can reside in an ASIC. The software module can be stored in the memory of a mobile terminal or in a memory card that can be inserted into the mobile terminal. For example, if the device (such as a mobile terminal) uses a high-capacity MEGA-SIM card or a high-capacity flash memory device, the software module can be stored in the MEGA-SIM card or the high-capacity flash memory device.

[0376] One or more and / or one or more combinations of functional blocks described in Figure 7 can be implemented as a general-purpose processor, digital signal processor (DSP), application-specific integrated circuit (ASIC), field-programmable gate array (FPGA), or other programmable logic device, discrete gate or transistor logic device, discrete hardware component, or any suitable combination thereof for performing the functions described herein. One or more and / or one or more combinations of functional blocks described in Figure 7 can also be implemented as a combination of computing devices, such as a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors in communication with a DSP, or any other such configuration.

[0377] The present application has been described above with reference to specific embodiments. However, those skilled in the art should understand that these descriptions are exemplary and not intended to limit the scope of protection of the present application. Those skilled in the art can make various modifications and variations to the present application based on its spirit and principles, and these modifications and variations are also within the scope of the present application.

[0378] According to the various embodiments disclosed in this application, the following notes are also disclosed:

[0379] 1. A method for indicating MBS services, the method being applied to a network device, the method comprising:

[0380] The network device sends the first message to the terminal device.

[0381] The first message includes at least information about a first geographic region, which is used to indicate the service area of ​​the MBS service.

[0382] The information for the first geographic region includes at least one of the following:

[0383] Information about one or more second geographic regions;

[0384] One or more second geographic area identifiers (area IDs);

[0385] The mapping information between the second geographic region identifier and the second geographic region.

[0386] The information for the second geographic region includes a second geographic region identifier and / or one or more geographic regions included in the second geographic region.

[0387] 2. According to the method described in Appendix 1, wherein,

[0388] The information of the first geographical region includes at least the service area information of the MBS service of the first cell.

[0389] 3. According to the method described in Appendix 2, wherein,

[0390] The first cell includes at least one of the serving cell of the terminal device, neighboring cells of the serving cell, and non-serving cells.

[0391] 4. The method according to any one of notes 1-3, wherein,

[0392] The scope of the first geographic region includes one of the following:

[0393] The geographical regions corresponding to all service areas of the MBS service or MBS service session.

[0394] The geographical area corresponding to the service area of ​​the MBS service or MBS service session that overlaps with the first cell.

[0395] The geographical area corresponding to the overlapping portion of the service area of ​​the first cell and the MBS service or MBS service session.

[0396] 5. According to the method described in Appendix 1, wherein,

[0397] The first message includes one or more public second geographic area identifiers.

[0398] The public one or more second geographic region identifiers are applied to all MBS service sessions contained in the first message.

[0399] 6. According to the method described in Appendix 1, wherein,

[0400] The first message includes one or more second geographic region identifiers, and an MBS service session or session list mapped to each of the one or more second geographic region identifiers.

[0401] 7. According to the method described in Appendix 1, wherein,

[0402] The first message includes one or more second geographic region identifiers, and mapping information between the one or more second geographic region identifiers and each MBS service session.

[0403] 8. According to the method described in Appendix 1, wherein,

[0404] Each MBS service session information in the first message contains one or more second geographic region identifiers, which indicate the service area of ​​each MBS service session.

[0405] 9. The method according to Appendix 1, wherein the method further comprises:

[0406] The network device sends first configuration information to the terminal device, the first configuration information including at least one of the following:

[0407] The first time length is the threshold of the time length during which the terminal device leaves the last boundary of the service area of ​​the MBS service of interest.

[0408] The first distance is the distance threshold between the terminal device and the nearest boundary of any MBS service of interest, where the terminal device is not within the service area of ​​any MBS service of interest.

[0409] The second distance is the distance threshold at which the terminal device leaves the last boundary of the service area of ​​the MBS service of interest;

[0410] The third distance is a distance threshold between the terminal device interested in the MBS service and the nearest boundary of the MBS service area;

[0411] The first time interval is the time interval during which the terminal device listens to the PDCCH used for MCCH transmission when it skips the reception of MCCH information.

[0412] 10. The method according to Appendix 9, wherein,

[0413] The first configuration information is included in the first message.

[0414] Any two of the first distance, the second distance, and the third distance may be the same or different.

Claims

1. A processing apparatus for MBS services, the apparatus being applied to a terminal device, the apparatus comprising: A receiver receives a first message sent by a network device, the first message including at least information about a first geographic region, the information about the first geographic region being used to indicate the service area of ​​the MBS service. The processor determines the service area of ​​the MBS service based on information from the first geographical region; and performs first processing based at least on the first message and / or the service area of ​​the MBS service.

2. The apparatus according to claim 1, wherein, The information for the first geographic region includes at least one of the following: Information about one or more second geographic regions; One or more second geographic area identifiers (area IDs); The mapping information between the second geographic region identifier and the second geographic region.

3. The apparatus according to claim 2, wherein, The information for the second geographic region includes a second geographic region identifier and / or one or more geographic regions included in the second geographic region.

4. The apparatus according to claim 1, wherein, The information for the first geographical region includes at least the service area information for the MBS service of the first cell. The first cell includes at least one of the serving cell of the terminal device, neighboring cells of the serving cell, and non-serving cells.

5. The apparatus according to claim 4, wherein, The scope of the first geographic region includes one of the following: The geographical regions corresponding to all service areas of the MBS service or MBS service session. The geographical area corresponding to the service area of ​​MBS services or MBS service sessions that overlap with the first cell. The geographical area corresponding to the overlapping portion of the service area of ​​the first cell and the MBS service or MBS service session.

6. The apparatus according to claim 1, wherein, The first message includes at least one of the following messages: MCCH messages, including MBS broadcast configuration messages. At least one of the following: (MBSBroadcastConfiguration) and MBS multicast configuration message (MBSMulticastConfiguration); SIB, wherein the SIB includes at least one of a first SIB and a second SIB.

7. The apparatus according to claim 1, wherein, The first message includes one or more public second geographic area identifiers. The public one or more second geographic region identifiers are applied to all MBS service sessions contained in the first message.

8. The apparatus according to claim 6, wherein, The first message includes one or more second geographic region identifiers, and an MBS service session or session list mapped to each of the one or more second geographic region identifiers.

9. The apparatus according to claim 6, wherein, The first message includes one or more second geographic region identifiers, and mapping information between the one or more second geographic region identifiers and each MBS service session.

10. The apparatus according to claim 6, wherein, Each MBS service session information in the first message contains one or more second geographic region identifiers, which indicate the service area of ​​each MBS service session.

11. The apparatus according to claim 1, wherein, The first process includes at least one of the following: Determine whether the terminal device is located within the service area of ​​the MBS service; Send a message to the network device indicating interest in MBS services; Skip the reception of MCCH information, which includes configuration information and / or control information of the MBS service; Receive MCCH information; Receive the MBS service.

12. The apparatus according to claim 11, wherein, The message indicating interest in MBS services includes the location information of the terminal device.

13. The apparatus according to claim 11, wherein, When the terminal device meets the first condition, the processor performs the following first process: sending a message indicating interest in MBS services to the network device, and / or skipping the reception of MCCH information. The first condition includes at least one of the following: The terminal device is a terminal device that is interested in MBS services; The terminal device is not within the service area of ​​any of the MBS services; The terminal device is not within the service area of ​​any MBS service that the terminal device is interested in. The terminal device has left the service area of ​​all MBS services that are of interest to the terminal devices. The terminal device is not within the service area of ​​any MBS service that the terminal device is interested in, and the distance between the terminal device and the nearest boundary of the service area of ​​the MBS service that the terminal device is interested in is greater than a first distance. The terminal device leaves the service area of ​​all MBS services of interest to the terminal device, and the departure distance of the terminal device from the last boundary of the service area of ​​the MBS services of interest to the terminal device is greater than the second distance, and / or the departure time is greater than the first time length.

14. The apparatus according to claim 13, wherein, The reception of skipped MCCH information is achieved through at least one of the following: The terminal device uses the cell list or tracking area list in the user service description, or the information of the first geographical area, to implement the process of avoiding receiving MCCH information or skipping the reception of MCCH information. The terminal device stops listening to the PDCCH used for MCCH transmission; The terminal device determines whether there is an MCCH information change notification by listening to the PDCCH used for MCCH transmission. If no MCCH information change notification is received, it stops receiving MCCH information or does not initiate the MCCH information reception process. The terminal device listens to the PDCCH used for MCCH transmission at a first time interval.

15. The apparatus according to claim 11, wherein, When the terminal device meets the second condition, the processor performs the following first process: receiving MCCH information and / or sending a message indicating interest in MBS services to the network device. The second condition includes at least one of the following: The terminal device interested in MBS services receives an SIB as the first message, and the terminal device is within the service area of ​​at least one MBS service indicated by the SIB. The terminal device interested in MBS services receives an SIB as the first message, the SIB indicating that the service area for transmitting MBS services has changed; The terminal device interested in MBS services enters a cell providing SIB20, the cell providing SIB20 The service area of ​​the MBS service provided by the cell is indicated by the MCCH message, which is the first message. The terminal device interested in MBS services enters a cell providing SIB20, and the terminal device is within the service area of ​​at least one MBS service, the service area of ​​which is a service area known to the terminal device. The terminal device interested in MBS services enters a cell that provides SIB20, and the terminal device is within the service area of ​​at least one MBS service, the service area of ​​which is indicated by the SIB as the first message. The terminal device that is interested in MBS services enters the service area of ​​an MBS service and / or the nearest boundary of the service area of ​​the MBS service is greater than or equal to the third distance, or the terminal device that is interested in MBS services is not in the service area of ​​any MBS service of interest and the nearest boundary of the service area of ​​an MBS service is equal to or less than the third distance. The terminal device that is interested in MBS services enters the service area of ​​an MBS service that the terminal device is interested in and / or the nearest boundary of the service area of ​​the MBS service that the terminal device is more than or equal to the third distance; or the terminal device that is interested in MBS services is not in the service area of ​​any MBS service that it is interested in and the nearest boundary of the service area of ​​an MBS service that the terminal device is interested in is equal to or less than the third distance. The terminal device interested in MBS services received SIB20 from a secondary cell, and the terminal device was within the service area of ​​MBS services in at least one of the secondary cells, the service area of ​​which was indicated by the SIB or MCCH message as the first message. The terminal device interested in MBS services receives an MCCH information change notification, or the terminal device interested in MBS services receives an MCCH information change notification and the terminal device is at least within the service area of ​​an MBS service indicated by the SIB in the first message. The terminal device interested in MBS services receives a notification of MCCH information change due to the start of a new MBS service, or the terminal device interested in MBS services receives a notification of MCCH information change and the terminal device is at least within the service area of ​​an MBS service indicated by the SIB in the first message. The terminal device interested in MBS services receives a notification of MCCH information change due to MCCH modification, or the terminal device interested in MBS services receives a notification of MCCH information change and the terminal device is at least within the service area of ​​one of the MBS services indicated by the SIB in the first message. Inside.

16. The apparatus according to claim 11, wherein, When the terminal device meets the third condition, the processor performs the following first process: receiving the MBS service. The third condition includes: the terminal device is located within the service area of ​​at least one MBS service that the terminal device is interested in.

17. The apparatus according to claim 1, wherein, The MBS service includes at least one of the MBS broadcast service and the MBS multicast service.

18. An indication device for MBS services, the device being applied to a network device, the device comprising: The transmitter sends the first message to the terminal device. The first message includes at least information about a first geographic region, which is used to indicate the service area of ​​the MBS service.

19. The apparatus according to claim 18, wherein, The information for the first geographic region includes at least one of the following: Information about one or more second geographic regions; One or more second geographic area identifiers (area IDs); The mapping information between the second geographic region identifier and the second geographic region.

20. The apparatus according to claim 18, wherein, The first message includes at least one of the following messages: MCCH message, the MCCH message including at least one of MBS broadcast configuration message (MBSBroadcastConfiguration) and MBS multicast configuration message (MBSMulticastConfiguration); SIB, wherein the SIB includes at least one of a first SIB and a second SIB.

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