Wireless communication methods, communication device, storage medium and program product

Abstract

Disclosed in the present application are wireless communication methods, a communication device, a storage medium and a program product. The method comprises: on the basis of first information for acquiring a frequency selection area identifier, acquiring a first frequency selection area identifier corresponding to a first broadcast service, wherein the first broadcast service is a broadcast service provided by both a non-terrestrial network and a terrestrial network, and the first frequency selection area identifier comprises a non-terrestrial network frequency selection area identifier and a terrestrial network frequency selection area identifier corresponding to the first broadcast service (401); acquiring from a target base station a second frequency selection area identifier corresponding to the first broadcast service, wherein the second frequency selection area identifier comprises the non-terrestrial network frequency selection area identifier or the terrestrial network frequency selection area identifier corresponding to the first broadcast service (402); and on the basis of the first frequency selection area identifier and the second frequency selection area identifier, receiving the first broadcast service (403).

Description

Wireless communication methods, communication devices, storage media and software products

[0001] Cross-reference of related applications

[0002] This application is based on and claims priority to Chinese Patent Application No. 2025102208676, filed on February 25, 2025, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application relates to the field of communication technology, and in particular to a wireless communication method, communication device, storage medium, and program product. Background Technology

[0004] With the development of mobile communications, non-terrestrial network (NTN) communication has become increasingly mature, complementing and coordinating with terrestrial networks (TN), and even replacing terrestrial networks in some application scenarios. For example, for multicast and broadcast services (MBS), NTN, with its wide coverage, is well-suited to support MBS in providing services to more user equipment (UE), thus achieving higher resource efficiency.

[0005] To receive MBS broadcast services normally, the UE needs to select a suitable broadcast channel (frequency) to receive the broadcast service. However, for MBS broadcast services provided by both NTN and TN, the broadcast frequencies provided by NTN and TN are usually different because the networking method of the MBS broadcast service of NTN is different from that of TN. This can easily lead to the UE being unable to select a suitable broadcast frequency, thus failing to receive the broadcast service normally and resulting in low reliability of wireless communication. Summary of the Invention

[0006] This application provides a wireless communication method, a communication device, a storage medium, and a program product.

[0007] In a first aspect, embodiments of this application provide a wireless communication method applied to a terminal device. The method includes: obtaining a first frequency selection region identifier corresponding to a first broadcast service based on first information for obtaining a frequency selection region identifier; wherein the first broadcast service is a broadcast service provided simultaneously by a non-terrestrial network and a terrestrial network; the first frequency selection region identifier includes a non-terrestrial network frequency selection region identifier and a terrestrial network frequency selection region identifier corresponding to the first broadcast service; obtaining a second frequency selection region identifier corresponding to the first broadcast service from a target base station; wherein the second frequency selection region identifier includes either a non-terrestrial network frequency selection region identifier or a terrestrial network frequency selection region identifier corresponding to the first broadcast service; and receiving the first broadcast service according to the first frequency selection region identifier and the second frequency selection region identifier.

[0008] Secondly, embodiments of this application provide a wireless communication method applied to a second network-side device. The method includes: obtaining a non-terrestrial network frequency selection area identifier and a terrestrial network frequency selection area identifier corresponding to a first broadcast service; wherein the first broadcast service is a broadcast service provided simultaneously by a non-terrestrial network and a terrestrial network; and sending a second frequency selection area identifier corresponding to the first broadcast service to each of at least one base station; wherein the second frequency selection area identifier includes a non-terrestrial network frequency selection area identifier or a terrestrial network frequency selection area identifier.

[0009] Thirdly, embodiments of this application provide a wireless communication method applied to a fourth network-side device. The method includes: obtaining a fourth frequency selection area identifier corresponding to a first broadcast service and network access capability information of the fourth network-side device; wherein the first broadcast service is a broadcast service provided simultaneously by a non-terrestrial network and a terrestrial network; the network access capability information is any one of the following: simultaneously supporting access to both a non-terrestrial network and a terrestrial network; supporting only access to a non-terrestrial network; supporting only access to a terrestrial network; the fourth frequency selection area identifier includes at least one of a non-terrestrial network frequency selection area identifier and a terrestrial network frequency selection area identifier corresponding to the first broadcast service; and according to the fourth frequency selection area identifier, sending a second frequency selection area identifier corresponding to the first broadcast service to each base station among at least one base station; wherein the second frequency selection area identifier includes at least a portion of the frequency selection area identifier in the fourth frequency selection area identifier; and the second frequency selection area identifier includes either a non-terrestrial network frequency selection area identifier or a terrestrial network frequency selection area identifier.

[0010] Fourthly, embodiments of this application provide a communication device, comprising: at least one processor; at least one memory for storing at least one program; and, when the at least one program is executed by the at least one processor, implementing the wireless communication method as described in the first, second, or third aspect.

[0011] Fifthly, embodiments of this application provide a computer-readable storage medium storing computer-executable instructions for performing the wireless communication method as described in the first, second, or third aspects.

[0012] In a sixth aspect, embodiments of this application provide a computer program product, including a computer program or computer instructions, the computer program or computer instructions being stored in a computer-readable storage medium, a processor of a communication device reading the computer program or computer instructions from the computer-readable storage medium, and the processor executing the computer program or computer instructions to cause the communication device to perform the wireless communication method as described in the first, second, or third aspects. Attached Figure Description

[0013] The accompanying drawings are used to provide a further understanding of the technical solutions of this application and constitute a part of the specification. They are used together with the embodiments of this application to explain the technical solutions of this application and do not constitute a limitation on the technical solutions of this application.

[0014] Figure 1 is a schematic diagram of the network architecture of MBS provided in an embodiment of this application;

[0015] Figure 2a is a schematic diagram of one of the MBS broadcast service networking methods provided in the embodiments of this application;

[0016] Figure 2b is a second schematic diagram of the MBS broadcast service networking method provided in the embodiments of this application;

[0017] Figure 3 is a schematic diagram of the core network architecture provided in an embodiment of this application;

[0018] Figure 4 is a flowchart illustrating one of the wireless communication methods provided in this application embodiment;

[0019] Figure 5 is a second schematic flowchart of the wireless communication method provided in the embodiments of this application;

[0020] Figure 6 is a third schematic flowchart of the wireless communication method provided in the embodiments of this application;

[0021] Figure 7 is a schematic diagram of the reporting and acquisition process of satellite access capability information of AMF provided in the embodiments of this application;

[0022] Figure 8 is one of the schematic diagrams of the MBS broadcast session establishment process provided in the embodiments of this application;

[0023] Figure 9 is a second schematic diagram of the MBS broadcast session establishment process provided in the embodiments of this application;

[0024] Figure 10 is a schematic diagram of the MBS broadcast session update process provided in an embodiment of this application;

[0025] Figure 11 is a schematic diagram of the process by which a UE obtains an FSA ID(s) according to an embodiment of this application;

[0026] Figure 12 is a schematic diagram of the process for a UE to select an FSA ID(s) according to an embodiment of this application;

[0027] Figure 13 is a schematic diagram of the structure of the communication device provided in an embodiment of this application. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0029] It should be understood that in the description of the embodiments of this application, the use of terms such as "first" and "second" is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of technical features indicated, or implicitly indicating the order of the technical features indicated. "At least one" refers to one or more, and "more" refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent the existence of A alone, the simultaneous existence of A and B, or the existence of B alone. A and B can be singular or plural. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. "At least one of the following" and similar expressions refer to any group of these items, including any group of singular or plural items. For example, at least one of a, b, and c can represent: a, b, c, a and b, a and c, b and c, or a and b and c, where a, b, and c can be single or multiple.

[0030] For ease of understanding, the following describes some aspects of the embodiments of this application:

[0031] Multicast and Broadcast Service (MBS) is a point-to-multipoint service in which data is transmitted from a single source entity to multiple recipients, that is, to all users in the broadcast service area or users who have joined a multicast group. In some embodiments, the network architecture of MBS can be seen in Figure 1. Figure 1 shows a network structure of 5G MBS, which may include, but is not limited to: Policy Control Function (PCF), Network Repository Function (NRF), Unified Data Management (UDM), Access and Mobility Management Function (AMF), Session Management Function (SMF), Multi-homed Session Management Function (MB-SMF), Multi-homed Buffering Function (MBSF), Network Exposure Function (NEF), Application Function / Application Server (AF / AS), UE, Next Generation Radio Access Network (NG-RAN), User Plane Function (UPF), Multi-homed User Plane Function (MB-UPF), and Multi-homed Buffering and Storage Function (MBSTF).

[0032] With the further development of mobile communications, non-terrestrial network (NTN) communications are becoming increasingly mature, complementing and synergizing with terrestrial networks (TN), and even replacing terrestrial networks in some application scenarios. Taking satellite communications as an example, high-orbit and low-orbit satellite communications are developing rapidly, with significant improvements in speed, latency, and reliability. For MBS services, NTN, with its wide coverage, is well-suited to support MBS in providing services to more user equipment (UE), thus achieving higher resource efficiency.

[0033] For MBS broadcast services, the UE needs to select an appropriate broadcast channel (frequency) to receive broadcast services in order to receive broadcast services normally.

[0034] For MBS broadcast services provided by both non-terrestrial and terrestrial networks, the broadcast frequencies provided by the non-terrestrial network and the terrestrial network are usually different because the networking method of the MBS broadcast service in the non-terrestrial network is different from that in the terrestrial network. This can easily cause the UE to be unable to select a suitable broadcast frequency, and thus be unable to receive broadcast services normally.

[0035] The networking methods for MBS broadcast services between non-terrestrial and terrestrial networks can be, but are not limited to, those shown in Figures 2a and 2b. For UE direct satellite communication networking, the UE needs to receive broadcast services through the service link with the satellite. Due to the different environment of the satellite compared to the ground and the overall planning of frequency resources by the communication organization, the broadcast frequencies provided by the satellite and those provided by the TN base station are usually different.

[0036] In Figure 2a, the UE direct satellite communication mode is transparent, where the satellite and Radio Access Network (RAN) are decoupled. In Figure 2b, the UE direct satellite communication mode is regenerative, where the RAN is integrated onto the satellite; regenerative mode can also be called base station onboarding. Furthermore, the satellite can be, but is not limited to, geostationary Earth Orbit (GEO), low Earth Orbit (LEO), or medium Earth Orbit (MEO) satellites. The core network architecture diagrams in Figures 2a and 2b can be as shown in Figure 3, and can include, but is not limited to, satellite access AMF, terrestrial access AMF, MB-SMF, MB-UPF, and NEF / MBSF. The satellite access AMF is the AMF for satellite access, and the terrestrial access AMF is the AMF for TN base station access. It should be noted that the satellite access AMF and the terrestrial access AMF can be deployed separately or together; that is, the satellite access AMF and the terrestrial access AMF can be different AMFs or the same AMF, depending on actual needs. This application embodiment does not limit this.

[0037] Based on this, embodiments of this application provide a wireless communication method, communication device, storage medium, and program product, which enable the UE to select a suitable broadcast frequency and normally receive MBS broadcast services provided by both non-terrestrial and terrestrial networks, thereby improving the user experience.

[0038] In this embodiment, for broadcast services simultaneously provided by non-terrestrial and terrestrial networks, an NTN Frequency Selection Area Identifier (FSA ID) is introduced to identify the broadcast frequency provided by the NTN, and a TN FSA ID is introduced to identify the broadcast frequency provided by the TN. It is noteworthy that the NTN FSA ID and TN FSA ID corresponding to the broadcast service are independent, meaning their values ​​are different. Thus, the terminal device can accurately obtain the broadcast frequencies provided by the NTN and TN for the broadcast service through the NTN FSA ID(s) and TN FSA ID corresponding to the broadcast service. This allows the terminal device to select a suitable broadcast frequency to receive the broadcast service, ensuring normal reception and improving the reliability of wireless communication.

[0039] In practical implementation, for any broadcast service simultaneously provided by both non-terrestrial and terrestrial networks, its corresponding NTN FSA ID and TN FSA ID can be pre-configured. This allows the NTN to communicate based on the NTN FSA ID corresponding to the broadcast service, and the TN to communicate based on the TN FSA ID corresponding to the broadcast service, thereby improving the reliability of wireless communication. It should be noted that the corresponding FSA ID configured for the broadcast service can be flexibly adjusted based on actual needs to improve the flexibility of the broadcast service.

[0040] It is understandable that for any broadcast service simultaneously provided by both non-terrestrial and terrestrial networks, the number of corresponding NTN FSA IDs and TN FSA IDs can be one or more, and they can be equal or unequal. Therefore, the FSA ID can be denoted as FSA ID(s), the NTN FSA ID corresponding to the broadcast service can be denoted as NTN FSA ID(s), and the TN FSA ID corresponding to the broadcast service can be denoted as TN FSA ID(s). Furthermore, for different broadcast services, the corresponding NTN FSA IDs and TN FSA IDs can be unique. This allows terminal devices to accurately distinguish between different broadcast services, thereby improving the reception accuracy of broadcast services.

[0041] In some embodiments, the NTN FSA ID can also be referred to as the non-terrestrial FSA ID, and when the non-terrestrial network is provided via satellite, the NTN FSA ID can also be referred to as the satellite FSA ID; the TN FSA ID can also be referred to as the terrestrial FSA ID. For cases where the non-terrestrial network is provided via satellite, the NTN FSA ID can also be referred to as the satellite FSA ID.

[0042] Referring to Figure 4, which is a flowchart illustrating one of the wireless communication methods provided in this application embodiment, the wireless communication method shown in Figure 4 can be applied to a terminal device. In practical applications, the wireless communication method shown in Figure 4 can be executed by the terminal device, or by components of the terminal device, such as the processor, chip, or chip system of the terminal device, or by logic modules or software that implement all or part of the functions of the terminal device. As shown in Figure 4, the wireless communication method applied to a terminal device may include, but is not limited to, the following steps.

[0043] Step 401: Based on the first information used to obtain the frequency selection area identifier, obtain the first frequency selection area identifier corresponding to the first broadcast service; wherein, the first broadcast service is a broadcast service provided by both non-terrestrial networks and terrestrial networks; the first frequency selection area identifier includes the non-terrestrial network frequency selection area identifier and the terrestrial network frequency selection area identifier corresponding to the first broadcast service.

[0044] In step 401, the terminal device can obtain the first FSA ID(s) corresponding to the first broadcast service through the first information. The first broadcast service can be understood as any broadcast service provided simultaneously by a non-terrestrial network and a terrestrial network. The first FSA ID(s) can be understood as the pre-configured FSA ID(s) corresponding to the first broadcast service, including both the NTN FSA ID(s) and the TN FSA ID(s) corresponding to the first broadcast service.

[0045] In this embodiment, the first information is information that can be used to obtain FSA ID(s). It can be information received by the terminal device or local configuration information of the terminal device. The specific information can be determined according to the actual situation, and this embodiment does not limit it.

[0046] In some embodiments, the first information may be information carrying the FSA ID(s) corresponding to the broadcast service sent by the network-side device. The network-side device may be, but is not limited to, AF, MBSF, NEF, MB-SMF, or AMF. In these embodiments, before sending the first broadcast service, the network-side device may first send the first information carrying the FSA ID(s) corresponding to the first broadcast service to the terminal device, so that the terminal device can obtain the NTN FSA ID(s) and TN FSA ID(s) pre-configured for the first broadcast service, thereby selecting a suitable broadcast frequency for receiving the broadcast service and realizing the normal reception of the broadcast service.

[0047] Furthermore, the first information can be a Service Announcement sent by a first network-side device, which can be an AF, MBSTF, or MB-SMF, but is not limited to these. When the first information is a Service Announcement sent by the first network-side device, the first Frequency Selection Area (FSA) identifier corresponding to the first broadcast service is obtained based on the first information used to obtain the FSA identifier. Specifically, this can be manifested as parsing the first FSA identifier corresponding to the first broadcast service from the Service Announcement. That is, the terminal device can receive the Service Announcement and parse it to obtain the first FSA ID(s).

[0048] In other embodiments, the first information may be local configuration information of the terminal device storing FSA ID(s) corresponding to different broadcast services. It is understood that this local configuration information includes at least the FSA ID(s) corresponding to the first broadcast service; that is, this local configuration information stores at least one broadcast service and its corresponding NTN FSA ID(s) and TN FSA ID(s), with at least one broadcast service including the first broadcast service. In these embodiments, obtaining the first frequency selection area identifier corresponding to the first broadcast service based on the first information used to obtain the frequency selection area identifier can specifically be manifested as: based on the first broadcast service, filtering the first frequency selection area identifier corresponding to the first broadcast service from the local configuration information of the terminal device. Specifically, in the aforementioned local configuration information, for each broadcast service, its corresponding service identifier and FSA ID(s) can be associated. Thus, after determining that it wants to receive the first broadcast service, the terminal device can search for the FSA ID(s) associated with the service identifier in the aforementioned local configuration information based on the service identifier of the first broadcast service, and use the found FSA ID(s) as the FSA ID(s) corresponding to the first broadcast service.

[0049] As can be seen, in step 401, the terminal device can obtain the FSA ID(s) corresponding to the first broadcast service from the network-side device or from the local configuration information, thus enriching the methods for obtaining the FSA ID(s) corresponding to the first broadcast service.

[0050] Furthermore, in embodiments where the first information is information sent by the network-side device, since the FSA ID(s) corresponding to the first broadcast service is indicated by the network-side device, when the FSA ID(s) corresponding to the first broadcast service is updated, the network-side device can promptly indicate the latest FSA ID(s) corresponding to the first broadcast service, thereby improving the accuracy of obtaining the FSA ID(s) corresponding to the broadcast service. In embodiments where the first information is local configuration information, the terminal device can directly obtain the FSA ID(s) corresponding to the broadcast service based on its local configuration without interacting with the network-side device, thus saving the signaling overhead of obtaining the FSA ID(s) corresponding to the broadcast service.

[0051] Step 402: Obtain the second frequency selection area identifier corresponding to the first broadcast service from the target base station; wherein, the second frequency selection area identifier includes the non-terrestrial network frequency selection area identifier or the terrestrial network frequency selection area identifier corresponding to the first broadcast service.

[0052] In step 402, the terminal device can obtain the second FSA ID(s) corresponding to the first broadcast service through the target base station.

[0053] The coverage area of ​​the target base station encompasses the location of the terminal device; that is, the terminal device is within the coverage area of ​​the target base station. The target base station can be the terminal device's access base station or a neighboring base station of the terminal device's access base station.

[0054] In this embodiment, corresponding to NTN and TN, base stations can be divided into two types: non-terrestrial communication base stations and terrestrial communication base stations. Specifically, base stations located in NTN can be regarded as non-terrestrial communication base stations (also called NTN base stations or satellite communication base stations), and base stations located in TN can be regarded as terrestrial communication base stations (also called TN base stations). For broadcast services provided simultaneously by non-terrestrial and terrestrial networks, non-terrestrial communication base stations can obtain their corresponding NTN FSA ID(s), and terrestrial communication base stations can obtain their corresponding TN FSA ID(s). After obtaining the FSA ID(s) corresponding to the broadcast service, the base station can broadcast these obtained FSA ID(s) to the terminal device through the air interface, so that the terminal device can select an appropriate broadcast frequency to receive the broadcast service.

[0055] In practice, the target base station can be either a non-terrestrial communication base station or a terrestrial communication base station. The second FSA ID(s) is the FSA ID(s) corresponding to the first broadcast service broadcast by the target base station to the terminal device. Therefore, it can be understood that the specific type of the second FSA ID(s) is determined based on the base station type of the target base station. Specifically, when the target base station is a non-terrestrial communication base station, the second FSA ID(s) is the NTN FSA ID(s) corresponding to the first broadcast service; when the target base station is a terrestrial communication base station, the second FSA ID(s) is the TN FSA ID(s) corresponding to the first broadcast service.

[0056] The specific attributes of the target base station can be determined based on the actual situation. In some embodiments, the target base station can satisfy any of the following:

[0057] When the terminal device is located only in an area covered by a non-terrestrial network, the target base station is a non-terrestrial communication base station;

[0058] When the terminal device is only located in the coverage area of ​​the terrestrial network, the target base station is a terrestrial communication base station;

[0059] When the terminal device is located in the coverage area of ​​non-terrestrial network and terrestrial network, the target base station is either a non-terrestrial communication base station or a terrestrial communication base station, and the target base station is determined by the terminal device.

[0060] Specifically, when the target base station is a non-terrestrial communication base station, the second frequency selection area identifier includes the non-terrestrial network frequency selection area identifier corresponding to the first broadcast service; when the target base station is a terrestrial communication base station, the second frequency selection area identifier includes the terrestrial network frequency selection area identifier corresponding to the first broadcast service.

[0061] In the case where the terminal device is only located in the coverage area of ​​the NTN, it can be understood that the terminal device can only receive information sent by non-terrestrial communication base stations. Therefore, in this case, the target base station is specifically a non-terrestrial communication base station, and the second FSA ID(s) is the NTN FSA ID(s) corresponding to the first broadcast service obtained by the terminal device from the non-terrestrial communication base station.

[0062] In cases where the terminal device is only located within the TN coverage area, it can be understood that the terminal device can only receive information from the terrestrial communication base station. Therefore, in this case, the target base station is specifically a terrestrial communication base station, and the second FSA ID(s) is the TN FSA ID(s) corresponding to the first broadcast service obtained by the terminal device from the terrestrial communication base station.

[0063] When the terminal device is located in the coverage area of ​​NTN and TN, the terminal device can receive information from both non-terrestrial communication base stations and terrestrial communication base stations. Therefore, in this case, before receiving the first broadcast service, it can be determined whether the terminal device receives the first broadcast service through NTN or TN, thereby determining the base station type of the target base station. It can be understood that if it is decided that the terminal device receives the first broadcast service through NTN, the target base station is a non-terrestrial communication base station; if it is decided that the terminal device receives the first broadcast service through TN, the target base station is a terrestrial communication base station.

[0064] This application does not limit the specific implementation of the above decision. In some embodiments, the decision can be performed by the user, such as the terminal device outputting information instructing the user to choose between NTN and TN to receive broadcast services. In other embodiments, the decision can be performed autonomously by the terminal device, and the target base station can be understood as being determined by the terminal device. For example, the terminal device can measure and obtain the communication quality between itself and different base stations, and then select the network corresponding to the base station with the best communication quality to receive broadcast services, thereby improving the reliability of broadcast service reception.

[0065] The above method provides a solution for determining the target base station and the second FSA ID(s) under different circumstances. The second FSA ID(s) determined by this method enables the terminal device to select an appropriate broadcast frequency to receive the first broadcast service from the target base station, thereby improving the reliability of broadcast service reception.

[0066] It should be noted that the execution order of steps 401 and 402 is not limited in this application embodiment. It can be determined according to the actual situation. This application embodiment does not limit this.

[0067] Step 403: Select the area identifier based on the first frequency and the area identifier based on the second frequency, and receive the first broadcast service.

[0068] As can be seen from the above, the first FSA ID(s) includes the NTN FSA ID(s) and TN FSA ID(s) corresponding to the first broadcast service, and the second FSA ID(s) includes the NTN FSA ID(s) or TN FSA ID(s) corresponding to the first broadcast service.

[0069] In practice, the target FSA ID can be determined first based on the first FSA ID(s) and the second FSA ID(s), wherein the target FSA ID can be any FSA ID included by both the first FSA ID(s) and the second FSA ID(s); then, the first broadcast service is received according to the broadcast frequency corresponding to the target FSA ID.

[0070] The embodiments of this application do not limit the method of determining the target FSA ID. In some embodiments, the terminal device may first determine the same FSA ID of the first FSA ID(s) and the second FSA ID(s), and then select one FSA ID as the target FSA ID.

[0071] In other embodiments, receiving a first broadcast service based on a first frequency selection area identifier and a second frequency selection area identifier includes:

[0072] Based on the second frequency selection area identifier, the third frequency selection area identifier is determined from the first frequency selection area identifier;

[0073] The first broadcast service is received by selecting the area identifier based on the second frequency and the area identifier based on the third frequency.

[0074] In these embodiments, a third FSA ID(s) can be determined from the first FSA ID(s) based on the second FSA ID(s), and then the target FSA ID can be determined based on the second FSA ID(s) and the third FSA ID(s).

[0075] The third FSA ID(s) may include some or all of the FSA ID(s) in the first FSA ID(s) whose ID type is the same as that in the second FSA ID(s). Specifically, if the second FSA ID(s) is an NTN FSA ID(s), the third FSA ID(s) includes some or all of the NTN FSA ID(s) in the first FSA ID(s) corresponding to the first broadcast service; if the second FSA ID(s) is a TN FSA ID(s), the third FSA ID(s) includes some or all of the TN FSA ID(s) in the first FSA ID(s) corresponding to the first broadcast service.

[0076] In some implementations, all FSA IDs in the first FSA ID(s) whose ID type is the same as that of the second FSA ID(s) can be directly identified as the third FSA ID(s) based on the ID type of the second FSA ID(s).

[0077] In other implementations, the first FSA ID(s) and the second FSA ID(s) can be compared, and the FSA ID(s) in the first FSA ID(s) that is the same as the second FSA ID(s) can be determined as the third FSA ID(s).

[0078] After determining the third FSA ID(s), you can select an FSA ID that is the same as the second FSA ID(s) and the third FSA ID(s) to determine as the target FSA ID.

[0079] In these embodiments, a third FSA ID(s) can be determined from the first FSA ID(s) based on the second FSA ID(s), and then a suitable broadcast frequency can be selected to receive the first broadcast service based on the second FSA ID(s) and the third FSA ID(s). Compared with directly comparing the first FSA ID(s) and the second FSA ID(s) to select a suitable broadcast frequency to receive the first broadcast service, the selection range of broadcast frequencies can be reduced and the selection efficiency of broadcast frequencies can be improved.

[0080] The wireless communication method of this application, for broadcast services simultaneously provided by non-terrestrial networks and terrestrial networks, introduces an NTN FSA ID to identify the broadcast frequency provided by the NTN and a TN FSA ID to identify the broadcast frequency provided by the TN. On the terminal side, on one hand, the terminal device can obtain a first FSA ID(s) corresponding to the broadcast service based on first information used to obtain the frequency selection area identifier. The first FSA ID(s) includes both the NTN FSA ID(s) and the TN FSA ID(s) corresponding to the broadcast service. On the other hand, the terminal device can obtain a second FSA ID(s) corresponding to the broadcast service from the target base station. The second FSA ID(s) includes either the NTN FSA ID(s) or the TN FSA ID(s) corresponding to the broadcast service. Thus, the terminal device can obtain the broadcast frequencies provided by the NTN and TN for the broadcast service through the first FSA ID(s), and obtain the broadcast frequency used by the target base station to broadcast the broadcast service through the second FSA ID(s). Therefore, the terminal device can select a suitable broadcast frequency to receive the broadcast service based on the first FSA ID(s) and the second FSA ID(s), thereby achieving normal reception of the broadcast service and improving the reliability of wireless communication.

[0081] This application does not limit the method by which the target base station obtains the second FSA ID(s). In some embodiments, the FSA ID(s) obtained by the target base station may be issued by a network-side device based on a policy (such as a commercial agreement). The network-side device may be, but is not limited to, AF, MBSF, NEF, MB-SMF, or AMF.

[0082] Furthermore, this application embodiment does not limit the timing of the network-side device sending the second FSA ID(s) to the target base station, nor the message bearer type of the second FSA ID(s). In some embodiments, the second frequency selection area identifier can be obtained by the target base station from at least one of the following messages: a Broadcast Session Setup Request message for the first broadcast service; or a Broadcast Session Modification Request message for the first broadcast service.

[0083] In these embodiments, the network-side device may send an FSA ID(s) corresponding to the base station type of the base station to the target base station during the broadcast session establishment phase and / or broadcast session update phase of the first broadcast service. The FSA ID(s) may also be carried in the broadcast session establishment request message and / or broadcast session establishment update request message of the first broadcast service and sent to the base station. Of course, in other embodiments, the transmission of the FSA ID(s) of the broadcast service may be decoupled from the broadcast session establishment phase and / or broadcast session update phase of the broadcast service. This can be determined according to actual needs, and the embodiments of this application do not limit this.

[0084] In specific implementations, in some embodiments, the network-side device may send the corresponding FSA ID(s) to the base station solely through the broadcast session establishment request message of the first broadcast service. In these embodiments, the second FSA ID(s) may be obtained by the target base station from the broadcast session establishment request message of the first broadcast service.

[0085] In some implementations, the network-side device may send the corresponding FSA ID(s) to the base station solely through the broadcast session establishment update request message of the first broadcast service. In these implementations, the second FSA ID(s) may be obtained by the target base station from the broadcast session establishment update request message of the first broadcast service.

[0086] In other implementations, the network-side device can send a pre-configured FSA ID(s) to the base station via a broadcast session establishment request message for the first broadcast service. If the FSA ID(s) of the first broadcast service is updated, the network-side device can send the updated FSA ID(s) to the base station via a broadcast session establishment update request message for the first broadcast service. Specifically, the broadcast session establishment update request message for the first broadcast service can carry all the updated FSA ID(s), or only the newly added FSA ID(s).

[0087] Assuming the second FSA ID(s) is the updated FSA ID(s) from the first broadcast service, it can be understood that if the broadcast session establishment update request message of the first broadcast service carries all the updated FSA IDs(s), the second FSA ID(s) can be obtained by the target base station from the broadcast session establishment update request message of the first broadcast service. If the first broadcast service only carries the newly added FSA ID(s), the second FSA ID(s) can be obtained by the target base station from both the broadcast session establishment update request message and the broadcast session establishment update request message of the first broadcast service. That is, part of the second FSA ID(s) comes from the broadcast session establishment update request message of the first broadcast service, and another part comes from the broadcast session establishment update request message of the first broadcast service.

[0088] In the above embodiments, the network-side device can reuse the broadcast session establishment request message and / or broadcast session establishment update message of the first broadcast service to send the corresponding FSA ID(s) to the base station, thereby reducing signaling overhead.

[0089] Referring to Figure 5, which is a second schematic flowchart of the wireless communication method provided in this application embodiment, the wireless communication method shown in Figure 5 can be applied to a second network-side device, which may be, but is not limited to, an MB-SMF. In practical applications, the wireless communication method shown in Figure 5 can be executed by the second network-side device, or by components of the second network-side device, such as the processor, chip, or chip system of the second network-side device, or by logic modules or software that implement all or part of the functions of the second network-side device. As shown in Figure 5, the wireless communication method applied to the second network-side device may include, but is not limited to, the following steps.

[0090] Step 501: Obtain the non-terrestrial network frequency selection area identifier and the terrestrial network frequency selection area identifier corresponding to the first broadcast service; wherein, the first broadcast service is a broadcast service provided by both the non-terrestrial network and the terrestrial network.

[0091] Step 502: Send a second frequency selection area identifier corresponding to the first broadcast service to each of the at least one base station; wherein the second frequency selection area identifier includes a non-terrestrial network frequency selection area identifier or a terrestrial network frequency selection area identifier.

[0092] As can be seen from the method embodiment corresponding to Figure 4, in order for the terminal device to select a suitable broadcast frequency and receive the first broadcast service normally, the terminal device needs to obtain the second FSA ID(s) corresponding to the first broadcast service from the base station. Based on this, the method embodiment corresponding to Figure 5 will introduce the specific implementation of the base station obtaining the second FSA ID(s) from the perspective of the second network side device, that is, the specific implementation of the second network side device sending the second FSA ID(s) to the base station.

[0093] In practice, the second network-side device can first obtain the NTN FSA ID(s) and TN FSA ID(s) corresponding to the first broadcast service. Then, based on the obtained NTN FSA ID(s) and TN FSA ID(s) corresponding to the first broadcast service, it can choose to send either the NTN FSA ID(s) or the TN FSA ID(s) corresponding to the first broadcast service to the base station, so that the base station broadcasts the FSA ID(s) corresponding to the first broadcast service it has received. This enables the terminal device to obtain the FSA ID(s) corresponding to the first broadcast service from the base station, thereby selecting a suitable broadcast frequency, receiving the first broadcast service normally, and improving the reliability of wireless communication.

[0094] This application does not limit the method by which the second network-side device obtains the FSA ID(s) corresponding to the first broadcast service. In some embodiments, obtaining the non-terrestrial network frequency selection area identifier and the terrestrial network frequency selection area identifier corresponding to the first broadcast service may include:

[0095] Based on the third information used to obtain the frequency selection area identifier, obtain the non-terrestrial network frequency selection area identifier and the terrestrial network frequency selection area identifier corresponding to the first broadcast service.

[0096] The third information refers to information sent by a third network-side device, or it may be the local configuration information of a second network-side device. The third network-side device may be, but is not limited to, AF or NEF / MBSF.

[0097] In other words, the second network-side device can obtain the FSA ID(s) corresponding to the first broadcast service from the third network-side device, or the second network-side device can obtain the FSA ID(s) corresponding to the first broadcast service based on its local configuration. The specific implementation logic is similar to the specific implementation logic of the terminal-side device obtaining the first FSA ID(s) in the method embodiment corresponding to Figure 4, and can be found in the aforementioned descriptions, which will not be repeated here. This enriches the ways in which the second network-side device obtains the FSA ID(s) corresponding to the first broadcast service, improving the flexibility of obtaining the FSA ID(s) corresponding to the first broadcast service.

[0098] This application does not limit the message bearer type for the second network-side device to obtain the FSA ID(s) corresponding to the first broadcast service. In some embodiments, when the third information is information sent by the third network-side device, the non-terrestrial network frequency selection area identifier and the terrestrial network frequency selection area identifier corresponding to the first broadcast service are carried in at least one of the following messages: a broadcast session establishment request message for the first broadcast service; a broadcast session establishment update request message for the first broadcast service.

[0099] In these embodiments, the third network-side device can obtain the FSA ID(s) corresponding to the first broadcast service during the broadcast session establishment phase and / or broadcast session update phase of the first broadcast service, and can send the FSA ID(s) to the second network-side device in the broadcast session establishment request message and / or broadcast session establishment update request message of the first broadcast service. The specific implementation logic is similar to the specific implementation logic of the base station obtaining the second FSA ID(s) in the method embodiment corresponding to Figure 4, and can be found in the foregoing description; it will not be repeated here.

[0100] In the above embodiments, the third network-side device can reuse the broadcast session establishment request message and / or broadcast session establishment update message of the first broadcast service to send the FSA ID(s) corresponding to the first broadcast service to the second network-side device, thereby reducing signaling overhead.

[0101] In this embodiment, the second network-side device can choose to send either the NTN FSA ID(s) or the TN FSA ID(s) corresponding to the first broadcast service to the base station. In some embodiments, the second network-side device can select the type of FSA ID(s) sent to the base station based on the network type of the network in which the base station is located. Specifically, if the base station is located in an NTN, it can choose to send the NTN FSA ID(s) corresponding to the first broadcast service to the base station; if the base station is located in a TN, it can choose to send the TN FSA ID(s) corresponding to the first broadcast service to the base station. In this way, it can be ensured that the broadcast frequency selected based on the second FSA ID(s) obtained from the base station can receive the first broadcast service from the base station, thereby improving the reliability of wireless communication.

[0102] In other embodiments, sending a second frequency selection area identifier corresponding to the first broadcast service to each of at least one base station includes:

[0103] For each of the at least one base station, according to the base station type, a second frequency selection area identifier corresponding to the first broadcast service is sent to the base station.

[0104] The second frequency selection area identifier satisfies any of the following:

[0105] When the base station type is a non-terrestrial communication base station, the second frequency selection area identifier includes the non-terrestrial network frequency selection area identifier corresponding to the first broadcast service.

[0106] When the base station type is a terrestrial communication base station, the second frequency selection area identifier includes the terrestrial network frequency selection area identifier corresponding to the first broadcast service.

[0107] In these embodiments, the type of FSA ID(s) sent to the base station can be selected based on the base station type. Specifically, if the base station is an NTN base station, the NTN FSA ID(s) corresponding to the first broadcast service can be sent; if the base station is a TN base station, the TN FSA ID(s) corresponding to the first broadcast service can be sent. This ensures that the broadcast frequency selected based on the second FSA ID(s) obtained from the base station can receive the first broadcast service from the base station, thereby improving the reliability of wireless communication.

[0108] This application does not limit the communication method between the second network-side device and the base station. In some embodiments, the second network-side device can communicate directly with the base station and directly send the FSA ID(s) corresponding to the first broadcast service to the base station. In other embodiments, sending the second frequency selection area identifier corresponding to the first broadcast service to each of at least one base station may include:

[0109] Identify at least one Access and Mobility Management Function (AMF) located within the service area of ​​the first broadcast service;

[0110] Based on the network access capability information of at least one AMF, the second frequency selection area identifier corresponding to the first broadcast service is sent to each of the at least one base station through at least one AMF; wherein the network access capability information is any one of the following: simultaneously supporting access to non-terrestrial networks and terrestrial networks; supporting only access to non-terrestrial networks; or supporting only access to terrestrial networks.

[0111] In these embodiments, the second network-side device can send the FSA ID(s) corresponding to the first broadcast service to the base station through the AMF. Specifically, the second network-side device can first select the AMF based on the service area of ​​the first broadcast service, wherein the selected AMF is located within the service area of ​​the first broadcast service; then, it can send the second FSA ID(s) to the base station through the selected AMF. In this way, the flexibility of the second network-side device in sending the FSA ID(s) corresponding to the broadcast service to the base station can be improved.

[0112] Furthermore, when sending the second FSA ID(s) to the base station through a certain AMF, the transmission of the second FSA ID(s) can be based on the network access capability information of the AMF, so that the FSA ID(s) received by the AMF matches the network access capability information of the AMF, thereby improving the reliability of wireless communication.

[0113] The network access capability information of the AMF can indicate the types of networks that the AMF supports access to. Specifically, the AMF can be characterized as: simultaneously supporting access to both non-terrestrial and terrestrial networks; supporting access only to non-terrestrial networks; or supporting access only to terrestrial networks.

[0114] In some embodiments, based on the network access capability information of at least one AMF, a second frequency selection area identifier corresponding to a first broadcast service is sent to each base station of at least one base station via at least one AMF, including:

[0115] For each AMF in at least one AMF, send the fourth frequency selection area identifier corresponding to the first broadcast service and the network access capability information of the AMF to the AMF;

[0116] The fourth frequency selection area identifier is used by the AMF to send the second frequency selection area identifier corresponding to the first broadcast service to the base station corresponding to the AMF; the second frequency selection area identifier includes at least a portion of the frequency selection area identifier in the fourth frequency selection area identifier.

[0117] The fourth frequency selection area identifier and the second frequency selection area identifier can satisfy any of the following:

[0118] When the network access capability information of the fourth network-side device supports access to both non-terrestrial networks and terrestrial networks, the fourth frequency selection area identifier includes the non-terrestrial network frequency selection area identifier and the terrestrial network frequency selection area identifier corresponding to the first broadcast service; the second frequency selection area identifier is determined based on the base station type of the base station.

[0119] When the network access capability information of the fourth network side device is that it only supports access to non-terrestrial networks, both the fourth frequency selection area identifier and the second frequency selection area identifier include the non-terrestrial network frequency selection area identifier corresponding to the first broadcast service.

[0120] When the network access capability information of the fourth network-side device is that it only supports access to the terrestrial network, both the fourth frequency selection area identifier and the second frequency selection area identifier include the terrestrial network frequency selection area identifier corresponding to the first broadcast service.

[0121] In these embodiments, the second network-side device may first send the fourth FSA ID(s) corresponding to the first broadcast service and the network access capability information of the AMF to the AMF, so that the AMF can send the second FSA ID(s) to the base station based on the received fourth FSA ID(s).

[0122] In specific implementation, when the AMF's network access capability information indicates simultaneous support for accessing both non-terrestrial and terrestrial networks, the second network-side device can send the NTN FSA ID(s) and TN FSA ID(s) corresponding to the first broadcast service to the AMF. In this case, the AMF supports access to both NTN and TN; therefore, it can send FSA ID(s) to base stations within both NTN and TN. Specifically, the AMF can send the NTN FSA ID(s) corresponding to the first broadcast service to base stations within the NTN and the TN FSA ID(s) corresponding to the first broadcast service to base stations within the TN. Based on this, it can be understood that in this case, the fourth FSA ID(s) includes both the NTN FSA ID(s) and TN FSA ID(s) corresponding to the first broadcast service, and the second FSA ID(s) includes a portion of the fourth FSA ID(s).

[0123] When the AMF's network access capability information indicates that it only supports access to non-terrestrial networks, the second network-side device can send the NTN FSA ID(s) corresponding to the first broadcast service to the AMF. In this case, the AMF only supports access to the NTN, therefore, it can send FSA ID(s) to base stations within the NTN, specifically, the NTN FSA ID(s). Based on this, it can be understood that in this case, the fourth FSA ID(s) includes the NTN FSA ID(s) corresponding to the first broadcast service, and the second FSA ID(s) can include all FSA ID(s) of the fourth FSA ID(s).

[0124] If the AMF's network access capability information indicates that it only supports access to terrestrial networks, the second network-side device can send the TN FSA ID(s) corresponding to the first broadcast service to the AMF. In this case, the AMF only supports access to the TN, therefore, it can send FSA ID(s) to base stations within the TN, specifically, TN FSA ID(s). Based on this, it can be understood that in this case, the fourth FSA ID(s) includes the TN FSA ID(s) corresponding to the first broadcast service, and the second FSA ID(s) can include all FSA ID(s) of the fourth FSA ID(s).

[0125] The above provides a solution for the transmission of FSA ID(s) between the second network-side device and the AMF, as well as between the AMF and the base station. This solution ensures that the FSA ID(s) received by the AMF matches the AMF's network access capability information, and that the FSA ID(s) received by the base station matches the broadcast frequency used by the base station to broadcast the broadcast service. This guarantees that the terminal device can select an appropriate broadcast frequency based on the FSA ID(s) corresponding to the first broadcast service obtained from the base station, thereby achieving correct reception of the broadcast service and improving the reliability of wireless communication.

[0126] This application does not limit the method by which the second network-side device obtains the network access capability information of the AMF. In some embodiments, the second network-side device can directly obtain its corresponding network access capability information from the AMF. In other embodiments, before sending the second frequency selection area identifier corresponding to the first broadcast service to each base station in at least one base station through at least one AMF based on the network access capability information of at least one AMF, the method may further include:

[0127] Send a discovery request message to the Network Storage Function (NRF);

[0128] Receive a discovery response message from the NRF; wherein the discovery response message carries network access capability information of at least one AMF; the network access capability information of each AMF is determined by second information sent by the AMF, the second information being used to indicate the network access capability information of the AMF.

[0129] In these embodiments, the second network-side device can obtain AMF network access capability information from the NRF.

[0130] In practice, the AMF can send a second message to the NRF to indicate its own network access capability information. In this way, the NRF can store the network access capability information of each AMF.

[0131] After selecting an AMF, the second network-side device can query the network access capability information of the selected AMF through the NRF. In some implementations, the second network-side device can send a discovery request message to the NRF to trigger the NRF to send the network access capability information of the AMF it stores to the second network-side device. Furthermore, the second network-side device can include the identifier of the selected AMF in the discovery request message, so that the NRF can only feed back the network access capability information of these AMFs, thereby reducing signaling overhead.

[0132] Thus, a solution is provided for the second network-side device to obtain the network access capability information of the AMF, which enables the second network-side device to accurately obtain the network access capability information of the AMF, thereby ensuring the reliable transmission of FSA ID(s) and improving the reliability of wireless communication.

[0133] Referring to Figure 6, Figure 6 is a third schematic flowchart of the wireless communication method provided in this application embodiment. The wireless communication method shown in Figure 6 can be applied to a fourth network-side device, which can be, but is not limited to, an AMF (Automatic Network Component). In practical applications, the wireless communication method shown in Figure 6 can be executed by the fourth network-side device, or by components of the fourth network-side device, such as the processor, chip, or chip system of the fourth network-side device, or by logic modules or software that implement all or part of the functions of the fourth network-side device. As shown in Figure 6, the wireless communication method applied to the fourth network-side device can include, but is not limited to, the following steps.

[0134] Step 601: Obtain the fourth frequency selection area identifier corresponding to the network access capability information of the first broadcast service and the fourth network-side device; wherein, the first broadcast service is a broadcast service provided by both non-terrestrial networks and terrestrial networks; the network access capability information is any one of the following: simultaneously supports access to both non-terrestrial networks and terrestrial networks; only supports access to non-terrestrial networks; only supports access to terrestrial networks; the fourth frequency selection area identifier includes at least one of the non-terrestrial network frequency selection area identifier and the terrestrial network frequency selection area identifier corresponding to the first broadcast service.

[0135] Step 602: Based on the fourth frequency selection area identifier, send the second frequency selection area identifier corresponding to the first broadcast service to each of the at least one base station; wherein, the second frequency selection area identifier includes at least a portion of the frequency selection area identifier in the fourth frequency selection area identifier; the second frequency selection area identifier includes a non-terrestrial network frequency selection area identifier or a terrestrial network frequency selection area identifier.

[0136] As can be seen from the method embodiment corresponding to Figure 4, in order for the terminal device to select a suitable broadcast frequency and receive the first broadcast service normally, the terminal device needs to obtain the second FSA ID(s) corresponding to the first broadcast service from the base station. Based on this, the method embodiment corresponding to Figure 6 will introduce the specific implementation of the base station obtaining the second FSA ID(s) from the perspective of the fourth network side device, that is, the specific implementation of the fourth network side device sending the second FSA ID(s) to the base station.

[0137] It should be noted that the method embodiment in Figure 6 is an embodiment of the fourth network-side device corresponding to the method embodiment in Figure 5. Therefore, the relevant descriptions in the above method embodiments can be referred to, and the same beneficial effects can be achieved. To avoid repetition, further details will not be provided here.

[0138] In some embodiments, before obtaining the fourth frequency selection area identifier corresponding to the network access capability information of the first broadcast service and the fourth network-side device, the method may further include:

[0139] Send a second message to the fifth network-side device. The second message is used to indicate the network access capability information of the fourth network-side device.

[0140] The fifth network-side device can be, but is not limited to, NRF or MB-SMF.

[0141] It should be noted that the second piece of information can implicitly or explicitly indicate the network access capability information of the fourth network-side device.

[0142] In some embodiments, when the second information carries network access capability information of the fourth network-side device, the network access capability information of the fourth network-side device is the network access capability information carried in the second information.

[0143] If the second information does not carry network access capability information of the fourth network-side device, the network access capability information of the fourth network-side device is that it only supports access to the terrestrial network.

[0144] In specific implementations, in some methods, the fourth network-side device can display and indicate its network access capability information by carrying it in the second information. In these implementations, the network access capability information of the fourth network-side device, i.e., the network access capability information indicated in the second information, can be any of the following: simultaneously supporting access to both non-terrestrial and terrestrial networks; supporting only access to non-terrestrial networks; or supporting only access to terrestrial networks.

[0145] In other implementations, the second information can implicitly indicate the network access capability information of the fourth network-side device by carrying it within the second information. In these implementations, the network access capability information of the fourth network-side device indicates that it only supports access to terrestrial networks.

[0146] In these embodiments, if the network access capability information of the fourth network-side device is that it only supports access to terrestrial networks, it can implicitly or explicitly indicate its own network access capability information by including or omitting the network access capability information in the second information. If the network access capability information of the fourth network-side device is that it supports access to both non-terrestrial and terrestrial networks or only supports access to non-terrestrial networks, it can explicitly indicate its own network access capability information by including the network access capability information in the second information.

[0147] After receiving the second information sent by the fourth network-side device, the fifth network-side device can first determine whether the second information carries network access capability information. If the second information carries network access capability information, the network access capability information of the fourth network-side device can be determined based on the network access capability information carried in the second information; if the second information does not carry network access capability information, the network access capability information of the fourth network-side device can be directly determined to be that it only supports access to terrestrial networks.

[0148] As can be seen, the above embodiments can both improve the flexibility of indicating network access capability information and ensure the accuracy of indicating network access capability information.

[0149] This application does not limit the timing of reporting network access capability information or the format of the bearer information. In some embodiments, the second information may be capability registration request information or capability update request information. In these embodiments, the fourth network-side device may report network access capability information during the capability registration or capability update phase, and may include it in the capability registration request information or capability update request information and send it to the fifth network-side device. In this way, by reusing the signaling in the capability registration or capability update phase to report network access capability information, signaling overhead can be saved.

[0150] Of course, it is understood that in other embodiments, the transmission of network access capability information may also be decoupled from the capability registration or capability update phase, and the specific implementation may be determined according to actual needs. This application does not limit this aspect.

[0151] It should be noted that the various embodiments described in this application can be combined with each other or implemented individually without conflict, and this application does not limit this.

[0152] In the embodiments of this application, the satellite FSA ID(s) and the ground FSA ID(s) used for MBS are independent of each other.

[0153] Wireless communication methods may include the following steps:

[0154] Step 1: The network side can provide its own independent satellite FSA ID(s) and terrestrial FSA ID(s) to the satellite communication base station and the terrestrial communication base station respectively:

[0155] 1) The AMF reports satellite access capability information (i.e., the aforementioned network access capability information) to the NRF;

[0156] 2) MB-SMF obtains satellite access capability information of AMF from NRF;

[0157] 3) MB-SMF notifies AMF of satellite FSA ID(s) and / or ground FSA ID(s) based on AMF's satellite access capability information;

[0158] 4) The network side sends the satellite FSA ID(s) to the base station used for satellite communication;

[0159] 5) The network side sends the terrestrial FSA ID(s) to the base station used for terrestrial communication;

[0160] Step 2: The network side sends the satellite FSA ID(s) and terrestrial FSA ID(s) to the UE via service announcement, or the UE configures the satellite FSA ID(s) and terrestrial FSA ID(s) locally.

[0161] Step 3: UEs under NTN or TN can select a broadcast frequency based on the satellite FSA ID(s) and terrestrial FSA ID(s) obtained from the service announcement (or configured locally) and the FSA ID(s) broadcast by the base station over the air interface.

[0162] Note: AMF supporting both satellite and terrestrial access can be deployed as a single unit or independently. The network side can include, but is not limited to, AF, MBSF, NEF, MB-SMF, and AMF entities.

[0163] Through the embodiments of this application, for MBS broadcast service scenarios provided by both non-terrestrial and terrestrial networks, but not limited to this scenario, the satellite FSA ID(s) and terrestrial FSA ID(s) used for MBS are independent. The network side provides the independent satellite FSA ID(s) and terrestrial FSA ID(s) to the satellite communication base station and the terrestrial communication base station respectively. The base station broadcasts to the UE under the corresponding NTN / TN. In addition, the UE obtains the satellite FSA ID(s) and terrestrial FSA ID(s) through the network side or local configuration, thereby enabling the UE to select the appropriate broadcast frequency and receive broadcast services normally, achieving the technical effect of improving the user's MBS service experience.

[0164] For ease of understanding, the embodiments of this application are illustrated below through specific examples:

[0165] Example 1: Reporting and acquisition of AMF satellite access capability information.

[0166] As shown in Figure 7, the following steps may be included:

[0167] Step 1a: The AMF sends a Network Function Registration / Network Function Update Request (Nnrf_NFManagement_NFRegister / NFUpdate Request) to the NRF, which carries satellite access capability information.

[0168] Satellite access capability information may include:

[0169] It supports both satellite base station access and terrestrial base station access (i.e., it supports access to both non-terrestrial networks and terrestrial networks simultaneously).

[0170] It only supports satellite access (i.e., as mentioned above, it only supports access to non-terrestrial networks);

[0171] It only supports terrestrial access, meaning it does not support satellite access (i.e., as mentioned above, it only supports access to terrestrial networks).

[0172] Note: AMF may also omit "satellite access capability information", which implicitly indicates support for terrestrial access capability.

[0173] Step 1b: The NRF replies to the AMF with a Network Function Registration / Network Function Update Response (Nnrf_NFManagement_NFRegister / NFUpdate Response).

[0174] Step 2a: The AMF sends a Network Function Registration / Network Function Update Request (Nnrf_NFManagement_NFRegister / NFUpdate Request) to the NRF, which carries satellite access capability information.

[0175] Step 2b: NRF replies to AMF with a Network Function Registration / Network Function Update Response (Nnrf_NFManagement_NFRegister / NFUpdate Response).

[0176] Step 3: MB-SMF sends a Network Function Discovery Request (Nnrf_NFDiscovery_Request) to NRF.

[0177] Step 4: The NRF replies to the MB-SMF with a Network Function Discovery Response (Nnrf_NFDiscovery_Response), which carries the AMF information on satellite access capabilities.

[0178] In Example 1, the second network-side device is represented as MB-SMF; the fourth network-side device is represented as AMF; network access capability information is represented as satellite access capability information; second information is represented as a network function registration / network function update request; discovery request message is represented as a network function discovery request; and discovery response message is represented as a network function discovery response. It is understood that the above representations are merely examples and do not limit the specific representation of the network-side devices, information, or messages.

[0179] In Example 1, the AMF can send its own network access capability information to the NRF. Then, the MB-SMF can obtain the AMF's network access capability information through the NRF. In this way, the MB-SMF can send the corresponding FSA ID(s) to the base station through the AMF based on the AMF's network access capability information. This ensures that the FSA ID(s) received by the base station matches the broadcast frequency used by the base station to broadcast the broadcast service. This ensures that the terminal device can select the appropriate broadcast frequency based on the FSA ID(s) corresponding to the first broadcast service obtained from the base station, thereby achieving correct reception of the broadcast service and improving the reliability of wireless communication.

[0180] Example 2: MBS broadcast session established, AF sends satellite FSA ID and ground FSA ID.

[0181] As shown in Figure 8, the following steps may be included:

[0182] Step 1: AF sends an MBS session creation request / MBS user data injection session creation request (Nnef_MBSSession_Create request / Nmbsf_MBSUserDataIngestSession_Create Request) message to NEF / MBSF, which carries the satellite FSAID(s) and ground FSA ID(s).

[0183] Note: The MBS Service Area carried in this message includes the satellite tracking area (TA) and the ground TA, or the geographic / administrative location covered by satellite and ground.

[0184] Step 2: NEF / MBSF sends an MBS session creation request (Nmbsmf_MBSSession_Create Request message) to MB-SMF, which carries the satellite FSA ID(s) and the ground FSA ID(s).

[0185] Note: AF can also directly send the Nmbsmf_MBSSession_Create Request message to MB-SMF.

[0186] Step 3: MB-SMF sends a Packet Forwarding Control Protocol Session Establishment Request (PFCP) message to MB-UPF, and MB-UPF replies with a Packet Forwarding Control Protocol Session Establishment Response (PFCP) message to MB-SMF.

[0187] Step 4: MB-SMF sends an MBS session creation response (Nmbsmf_MBSSession_Create Response message) to NEF / MBSF.

[0188] Step 5: NEF / MBSF sends MBS session creation response / MBS user data injection session creation response (Nnef_MBSSession_Create Response / Nmbsf_MBSUserDataIngestSession_Create Response) messages to AF.

[0189] Step 6: The MB-SMF sends a Network Function Discovery Request (Nnrf_NFDiscovery_Request) message to the NRF, and the NRF replies to the MB-SMF with a Network Function Discovery Response (Nnrf_NFDiscovery_Response) message, carrying the discovered AMF information.

[0190] Step 7: MB-SMF selects AMF, and MB-SMF sends an MBS broadcast context creation request (Namf_MBSBroadcast_ContextCreate Request) message to AMF.

[0191] If the AMF selected by MB-SMF supports both satellite and terrestrial access, the message carries the satellite FSA ID(s) and the terrestrial FSA ID(s).

[0192] If the AMF selected by MB-SMF only supports satellite access, then the message carries the satellite FSA ID(s);

[0193] If the AMF selected by the MB-SMF only supports terrestrial access, then the message carries the terrestrial FSA ID(s).

[0194] Step 8: The AMF notifies all satellite communication base stations(s) under the NTN MBS service area to send a Broadcast Session Setup Request message to the base stations to establish a broadcast session, which carries the satellite FSA ID(s).

[0195] Step 9: The base station broadcasts the satellite FSA ID(s).

[0196] Step 10: The AMF receives a Broadcast Session Setup Reply (BROADCAST SESSION RESPONSE) message from the satellite communication base station(s).

[0197] Step 11: The AMF notifies all terrestrial communication base stations(s) under the TN MBS service area to send a Broadcast Session Setup Request message to notify the base stations to establish a broadcast session, which carries the terrestrial FSA ID(s).

[0198] Step 12: The base station broadcasts the ground FSA ID(s).

[0199] Step 13: The AMF receives a Broadcast Session Setup Reply (BROADCAST SESSION RESPONSE) message from the terrestrial communication base station(s).

[0200] Step 14: The AMF replies to the MB-SMF with an MBS broadcast context creation response (Namf_MBSBroadcast_ContextCreate Response) message.

[0201] Step 15: MB-SMF sends a Packet Forwarding Control Protocol Session Modification Request (PFCP Session Modification Request) message to MB-UPF, and MB-UPF replies with a response message to MB-SMF.

[0202] Step 16: The AMF receives a BROADCAST SESSION SETUP RESPONSE message from the terrestrial communication base station(s).

[0203] Step 17: The AMF sends an MBS broadcast context status notification request (Namf_MBSBroadcast_ContextStatusNotify Request) message to the MB-SMF, and the MB-SMF replies with a response message to the AMF.

[0204] Step 18: MB-SMF sends a Packet Forwarding Control Protocol Session Modification Request (PFCP Session Modification Request) message to MB-UPF, and MB-UPF replies with a response message to MB-SMF.

[0205] In Example 2, the satellite FSA ID(s) and terrestrial FSA ID(s) corresponding to the broadcast service acquired by the MB-SMF can be issued by the AF. The second network-side device is represented as the MB-SMF; the third network-side device is represented as the AF; the fourth network-side device is represented as the AMF; the third information is represented as an MBS session creation request / MBS user data injection session creation request; the discovery request message is represented as a network function discovery request; the discovery response message is represented as a network function discovery response; the discovered AMF information includes the AMF's network access capability information; the MB-SMF sends the FSA ID(s) corresponding to the AMF's network access capability information to the AMF through the MBS broadcast context creation request; the AMF sends the second FSA ID(s), i.e., the FSA ID(s) corresponding to its base station type, to the base station through the broadcast session establishment request message. It should be understood that the above representation is only an example and does not limit the specific representation of the above network-side devices, information, or messages.

[0206] In Example 2, the MBS broadcast session establishment process can be reused to send the corresponding FSA ID(s) to the base station, thereby enabling the UE to obtain the second FSA ID(s) through the base station, thus saving signaling overhead.

[0207] Example 3: MBS broadcast session established, AF does not send satellite FSAID and ground FSAID.

[0208] As shown in Figure 9, the following steps may be included:

[0209] Step 1: AF sends Nnef_MBSSession_Create request / Nmbsf_MBSUserDataIngestSession_Create Request messages to NEF / MBSF, which do not carry satellite FSA ID(s) and ground FSA ID(s);

[0210] Note: The MBS Service Area carried in this message includes satellite TA and terrestrial TA, or the geographic / administrative region location covered by satellite and terrestrial networks.

[0211] Step 2: NEF / MBSF sends an Nmbsmf_MBSSession_Create Request message to MB-SMF, which does not carry satellite FSAID(s) and ground FSA ID(s);

[0212] Note: AF can also directly send the Nmbsmf_MBSSession_Create Request message to MB-SMF.

[0213] Step 3: MB-SMF selects satellite FSA ID(s) and ground FSA ID(s) based on local configuration;

[0214] Step 4: MB-SMF sends a PFCP Session Establishment Request message to MB-UPF, and MB-UPF replies with a response message to MB-SMF;

[0215] Step 5: MB-SMF sends an Nmbsmf_MBSSession_Create Response message to NEF / MBSF, which carries the satellite FSA ID(s) and ground FSA ID(s) selected by MB-SMF;

[0216] Step 6: NEF / MBSF sends Nnef_MBSSession_Create Response / Nmbsf_MBSUserDataIngestSession_Create Response messages to AF, which carry the satellite FSA ID(s) and ground FSA ID(s) selected by MB-SMF;

[0217] Step 7: MB-SMF sends an Nnrf_NFDiscovery_Request message to NRF, and NRF replies to MB-SMF with an Nnrf_NFDiscovery_Response message, carrying the discovered AMF information;

[0218] Step 8: MB-SMF selects AMF, and MB-SMF sends a Namf_MBSBroadcast_ContextCreate Request message to AMF:

[0219] If the AMF selected by MB-SMF supports both satellite and terrestrial access, the message carries the satellite FSA ID(s) and the terrestrial FSA ID(s).

[0220] If the AMF selected by MB-SMF only supports satellite access, then the message carries the satellite FSA ID(s);

[0221] If the AMF selected by the MB-SMF only supports terrestrial access, then the message carries the terrestrial FSA ID(s);

[0222] Step 9: The AMF notifies all satellite communication base stations(s) under the NTN MBS service area to send a BROADCAST SESSION SETUP REQUEST message to the base stations to establish a broadcast session, which carries the satellite FSA ID(s);

[0223] Step 10: The base station broadcasts the satellite FSA ID(s);

[0224] Step 11: AMF receives a BROADCAST SESSION SETUP RESPONSE message from the satellite communication base station(s);

[0225] Step 12: The AMF notifies all terrestrial communication base stations(s) under the TN MBS service area to send a BROADCAST SESSION SETUP REQUEST message, notifying the base stations to establish a broadcast session, which carries the terrestrial FSA ID(s);

[0226] Step 13: The base station broadcasts the terrestrial FSA ID(s);

[0227] Step 14: The AMF receives a BROADCAST SESSION SETUP RESPONSE message from the terrestrial communication base station(s);

[0228] Step 15: The AMF replies to the MB-SMF with the Namf_MBSBroadcast_ContextCreate Response message;

[0229] Step 16: MB-SMF sends a PFCP Session Modification Request message to MB-UPF, and MB-UPF replies with a response message to MB-SMF;

[0230] Step 17: The AMF receives a BROADCAST SESSION SETUP RESPONSE message from the terrestrial communication base station(s);

[0231] Step 18: The AMF sends a Namf_MBSBroadcast_ContextStatusNotify Request message to the MB-SMF, and the MB-SMF replies with a response message to the AMF;

[0232] Step 19: MB-SMF sends a PFCP Session Modification Request message to MB-UPF, and MB-UPF replies with a response message to MB-SMF.

[0233] The main difference between Example 3 and Example 2 is that in Example 3, the satellite FSA ID(s) and terrestrial FSA ID(s) corresponding to the broadcast service obtained by MB-SMF can be obtained by MB-SMF based on local configuration. Therefore, in Example 3, the third information is represented by the local configuration information of MB-SMF. The rest can be referred to the explanation in Example 2, and will not be repeated here.

[0234] Based on this, compared with Example 2, Example 3 can further save the signaling overhead of satellite FSA ID(s) and ground FSA ID(s) corresponding to the broadcast service obtained by MB-SMF, thereby further improving resource utilization.

[0235] Example 4: MBS broadcast session update, the network side sends the updated satellite FSA ID and ground FSA ID.

[0236] As shown in Figure 10, the following steps may be included:

[0237] Step 1: AF sends an MBS session update request / MBS user data injection session update request (Nnef_MBSSession_Update request / Nmbsf_MBSUserDataIngestSession_Update Request) message to NEF / MBSF, which carries the satellite FSA ID(s) and the ground FSA ID(s);

[0238] Step 2: NEF / MBSF sends an MBS session update request (Nmbsmf_MBSSession_Update Request) message to MB-SMF, which carries the satellite FSA ID(s) and the ground FSA ID(s);

[0239] Note: AF can also directly send the Nmbsmf_MBSSession_Update Request message to MB-SMF.

[0240] Step 3: The MB-SMF sends an MBS broadcast context update request (Namf_MBSBroadcast_ContextUpdate Request) message to the AMF, which carries the satellite FSA ID(s) and / or the ground FSA ID(s);

[0241] If the MBS Service Area changes, the MB-SMF discovers the AMF from the NRF, selects the new AMF, and sends a Namf_MBSBroadcast_ContextCreate Request message to the new AMF.

[0242] If the AMF selected by MB-SMF supports both satellite and terrestrial access, the message carries the satellite FSA ID(s) and the terrestrial FSA ID(s).

[0243] If the AMF selected by MB-SMF only supports satellite access, then the message carries the satellite FSA ID(s);

[0244] If the AMF selected by the MB-SMF only supports terrestrial access, then the message carries the terrestrial FSA ID(s).

[0245] Step 4: The AMF notifies all satellite communication base stations(s) under the NTN MBS service area to send a Broadcast Session Modification Request (BROADCAST SESSION MODIFICATION REQUEST) message to update the broadcast session, which carries the satellite FSA ID(s);

[0246] Step 5: The base station broadcasts the satellite FSA ID(s);

[0247] Step 6: The AMF receives a Broadcast Session Modification Reply (BROADCAST SESSION MODIFICATION RESPONSE) message from the satellite communication base station(s);

[0248] Step 7: The AMF notifies all terrestrial communication base stations(s) under the TN MBS service area to send a BROADCAST SESSION MODIFICATION REQUEST message to update the broadcast session, which carries the terrestrial FSA ID(s);

[0249] Step 8: The base station broadcasts the terrestrial FSA ID(s);

[0250] Step 9: The AMF receives a BROADCAST SESSION MODIFICATION RESPONSE message from the terrestrial communication base station(s);

[0251] Step 10: The AMF replies to the MB-SMF with an MBS broadcast context update response (Namf_MBSBroadcast_ContextUpdate Response) message;

[0252] Step 11: The AMF receives a BROADCAST SESSION MODIFICATION RESPONSE message from the terrestrial communication base station(s);

[0253] Step 12: The AMF sends an MBS broadcast context status notification request (Namf_MBSBroadcast_ContextStatusNotify Request) message to the MB-SMF, and the MB-SMF replies with a response message to the AMF;

[0254] Step 13: MB-SMF sends an MBS session update response (Nmbsmf_MBSSession_Update Response) message to NEF / MBSF;

[0255] Step 14: NEF / MBSF sends the .MBS session update response / MBS user data injection session update response (Nnef_MBSSession_Update Response / Nmbsf_MBSUserDataIngestSession_Update Response) message to AF.

[0256] The above embodiments 2 and 3 can be understood as the distribution of satellite FSA ID(s) and ground FSA ID(s) initially configured for broadcast services. Embodiment 4 can be understood as the distribution of updated satellite FSA ID(s) and ground FSA ID(s) for broadcast services when the satellite FSA ID(s) and ground FSA ID(s) corresponding to the broadcast services are updated.

[0257] In Example 4, similar to Example 2, the satellite FSA ID(s) and ground FSA ID(s) updated by the broadcast service obtained by the MB-SMF are issued by the AF. Based on this, in Example 4, the second network-side device is represented as the MB-SMF; the third network-side device is represented as the AF; the fourth network-side device is represented as the AMF; the third information is represented as an MBS session update request / MBS user data injection session update request; the MB-SMF sends the FSA ID(s) corresponding to the AMF's network access capability information to the AMF through a broadcast session modification request; the AMF sends the second FSA ID(s), i.e., the FSA ID(s) corresponding to its base station type, to the base station through a broadcast session modification request message. It should be understood that the above representations are merely examples and do not limit the specific representation of the network-side devices, information, or messages.

[0258] In Example 4, when the FSA ID(s) corresponding to the broadcast service is updated, the MBS broadcast session update procedure can be reused to send the updated FSA ID(s) to the base station, thereby enabling the UE to obtain the updated FSA ID(s) through the base station. This can save signaling overhead.

[0259] Example 5: The UE obtains the first FSA ID(s): satellite FSA ID(s) and terrestrial FSA ID(s) through service announcement or local configuration.

[0260] As shown in Figure 11, the following steps may be included:

[0261] Step 1a: The AF / MBSTF sends an MBS user service advertisement to the UE(s) under the NTN, which carries the satellite FSA ID(s) and the terrestrial FSA ID(s).

[0262] Alternatively, step 1b: Configure the satellite FSA ID(s) and ground FSA ID(s) locally on the UE.

[0263] Step 2a: The AF / MBSTF sends an MBS user service advertisement to the UE(s) under the TN, which carries the satellite FSA ID(s) and the terrestrial FSA ID(s).

[0264] Alternatively, step 2b: Configure the satellite FSA ID(s) and ground FSA ID(s) locally on the UE.

[0265] In Embodiment 5, steps 1a and 1b represent the method by which a UE obtains the first FSA ID(s) under NTN. The execution relationship between steps 1a and 1b is OR, meaning that if step 1a is executed, step 1b can be omitted; conversely, if step 1b is executed, step 1a can be omitted. Steps 2a and 2b represent the method by which a UE obtains the first FSA ID(s) under TN. The execution relationship between steps 2a and 2b is OR, meaning that if step 2a is executed, step 2b can be omitted; conversely, if step 2b is executed, step 2a can be omitted.

[0266] In Example 5, the first network-side device is represented as AF / MBSTF; the first information is represented as a user service announcement (i.e., the aforementioned service pass) or the UE's local configuration information.

[0267] Through Example 5, the UE can obtain the first FSA ID(s) through service announcements or local configuration, thus enriching the methods for obtaining the first FSA ID(s) and improving the flexibility of obtaining the first FSA ID(s).

[0268] Example 6: UE selects FSA ID(s).

[0269] As shown in Figure 12, the following steps may be included:

[0270] Step 1a: The satellite communication base station(s) broadcasts the satellite FSA ID(s) to the UE.

[0271] Step 1b: The UE obtains the satellite FSA ID(s) and the ground FSA ID(s).

[0272] Step 1c: The UE selects an appropriate FSA ID(s), namely the satellite FSA ID(s).

[0273] Step 2a: The ground communication base station(s) broadcasts the ground FSA ID(s) to the UE.

[0274] Step 2b: The UE obtains the satellite FSA ID(s) and the ground FSA ID(s).

[0275] Step 2c: The UE selects an appropriate FSA ID(s), i.e., the ground FSA ID(s).

[0276] In Example 6, steps 1a to 1c are the specific implementation steps for the UE under NTN to obtain the first FSA ID(s) and the second FSA ID(s). In step 1a, the target base station is a satellite communication base station, and the second FSA ID(s) is a satellite FSA ID(s). The UE under NTN can obtain the second FSA ID(s) through step 1a, obtain the first FSA ID(s) through step 1b, and then select a suitable FSA ID(s) through step 1c. That is, the aforementioned FSA ID(s) is used to receive broadcast services.

[0277] Steps 2a to 2c are the specific implementation steps for a UE under the TN to obtain the first FSA ID(s) and the second FSA ID(s). In step 2a, the target base station is represented by a terrestrial communication base station, and the second FSA ID(s) is represented by a terrestrial FSA ID(s). A UE under the TN can obtain the second FSA ID(s) through step 2a, obtain the first FSA ID(s) through step 2b, and then select a suitable FSA ID(s) through step 2c. That is, the aforementioned FSA ID(s) is used to receive broadcast services.

[0278] Thus, through Embodiment 6, for MBS broadcast services provided simultaneously by non-terrestrial networks and terrestrial networks, UEs under either NTN or TN can select appropriate broadcast frequencies and receive broadcast services normally, thereby improving the reliability of wireless communication.

[0279] This application embodiment also provides a communication device, as shown in FIG13, the communication device 1300 includes:

[0280] One or more processors 1310;

[0281] The memory 1320 stores one or more programs that, when executed by one or more processors 1310, cause the one or more processors 1310 to implement the wireless communication method described in any of the above embodiments.

[0282] Memory 1320, as a non-transitory network system, can be used to store non-transitory software programs and non-transitory computer-executable programs. Furthermore, memory 1320 may include high-speed random access memory and may also include non-transitory memory, such as at least one disk storage device, flash memory device, or other non-transitory solid-state storage device. In some embodiments, memory 1320 may optionally include remotely located memories 1320 relative to processor 1310, which can be connected to processor 1310 via a network. Examples of such networks include, but are not limited to, the Internet, intranets, local area networks, mobile communication networks, and combinations thereof.

[0283] The memory 1320 can be implemented as a read-only memory (ROM), static storage device, dynamic storage device, or random access memory (RAM). The memory 1320 can store the operating system and other application programs. When the technical solutions provided in the embodiments of this specification are implemented through software or firmware, the relevant program code is stored in the memory 1320 and is called and executed by the processor 1310.

[0284] The processor 1310 can be implemented using a general-purpose CPU (Central Processing Unit), microprocessor, application-specific integrated circuit (ASIC), or one or more integrated circuits, and is used to execute relevant programs to implement the technical solutions provided in the embodiments of this application.

[0285] In some embodiments, the communication device further includes:

[0286] Input / output interfaces are used to implement information input and output;

[0287] The communication interface is used to enable communication and interaction between this device and other devices. Communication can be achieved through wired means (such as USB, Ethernet cable, etc.) or wireless means (such as mobile network, WIFI, Bluetooth, etc.).

[0288] The bus transmits information between various components of the device (e.g., processor 1310, memory 1320, input / output interface, and communication interface);

[0289] The processor 1310, memory 1320, input / output interface, and communication interface can communicate with each other within the device via a bus.

[0290] One embodiment of this application also provides a computer-readable storage medium storing computer-executable instructions for performing wireless communication methods as provided in any embodiment of this application.

[0291] An embodiment of this application also provides a computer program product, including a computer program or computer instructions stored in a computer-readable storage medium. A processor of a computer device reads the computer program or computer instructions from the computer-readable storage medium and executes the computer program or computer instructions, causing the computer device to perform the wireless communication method provided in any embodiment of this application.

[0292] In this embodiment, for broadcast services simultaneously provided by non-terrestrial and terrestrial networks, an NTN FSA ID is introduced to identify the broadcast frequency provided by the NTN, and a TN FSA ID is introduced to identify the broadcast frequency provided by the TN. On the terminal side, on one hand, the terminal device can obtain a first FSA ID(s) corresponding to the broadcast service based on first information used to obtain the frequency selection area identifier. The first FSA ID(s) includes both the NTN FSA ID(s) and the TN FSA ID(s) corresponding to the broadcast service. On the other hand, the terminal device can obtain a second FSA ID(s) corresponding to the broadcast service from the target base station. The second FSA ID(s) includes either the NTN FSA ID(s) or the TN FSA ID(s) corresponding to the broadcast service. Thus, the terminal device can obtain the broadcast frequencies provided by the NTN and TN for the broadcast service through the first FSA ID(s), and obtain the broadcast frequency used by the target base station to broadcast the broadcast service through the second FSA ID(s). Therefore, the terminal device can select a suitable broadcast frequency to receive the broadcast service based on the first FSA ID(s) and the second FSA ID(s), thereby achieving normal reception of the broadcast service and improving the reliability of wireless communication.

[0293] The system architecture and application scenarios described in this application are intended to more clearly illustrate the technical solutions of this application and do not constitute a limitation on the technical solutions provided in this application. Those skilled in the art will understand that as system architectures evolve and new application scenarios emerge, the technical solutions provided in this application are also applicable to similar technical problems.

[0294] Those skilled in the art will understand that all or some of the steps in the methods disclosed above, as well as the functional modules / units in the systems and devices, can be implemented as software, firmware, hardware, or suitable combinations thereof.

[0295] In hardware implementations, the division between functional modules / units mentioned in the above description does not necessarily correspond to the division of physical components; for example, a physical component may have multiple functions, or a function or step may be performed collaboratively by several physical components. Some or all physical components may be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application-specific integrated circuit. Such software may be distributed on a computer-readable medium, which may include computer storage media (or non-transitory media) and communication media (or transient media). As is known to those skilled in the art, the term computer storage media includes volatile and non-volatile, removable and non-removable media implemented in any method or technology for storing information (such as computer-readable instructions, data structures, program modules, or other data). Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technologies, CD-ROM, digital versatile disc (DVD) or other optical disc storage, magnetic cartridges, magnetic tape, disk storage or other magnetic storage devices, or any other medium that can be used to store desired information and is accessible to a computer. Furthermore, as is known to those skilled in the art, communication media typically contain computer-readable instructions, data structures, program modules, or other data in modulated data signals such as carrier waves or other transmission mechanisms, and may include any information delivery medium.

[0296] The terms “component,” “module,” “system,” etc., used in this specification are used to refer to computer-related entities, hardware, firmware, combinations of hardware and software, software, or software in execution. For example, a component can be, but is not limited to, a process running on a processor, a processor, an object, an executable file, an execution thread, a program, or a computer. As illustrated, applications running on computing devices and computing devices can both be components. One or more components may reside in a process or execution thread, and components may be located on a single computer or distributed among two or more computers. Furthermore, these components can be executed from various computer-readable media on which various data structures are stored. Components can communicate, for example, via local or remote processes based on signals having one or more data packets (e.g., data from two components interacting with another component between a local system, a distributed system, or a network, such as the Internet interacting with other systems via signals).

[0297] The above description, with reference to the accompanying drawings, illustrates some embodiments of this application, but does not limit the scope of this application. Any modifications, equivalent substitutions, and improvements made by those skilled in the art without departing from the scope and spirit of this application shall be within the scope of this application.

Claims

1. A wireless communication method applied to a terminal device, the method comprising: Based on the first information used to obtain the frequency selection area identifier, the first frequency selection area identifier corresponding to the first broadcast service is obtained; wherein, the first broadcast service is a broadcast service provided simultaneously by a non-terrestrial network and a terrestrial network; the first frequency selection area identifier includes the non-terrestrial network frequency selection area identifier and the terrestrial network frequency selection area identifier corresponding to the first broadcast service. Obtain the second frequency selection area identifier corresponding to the first broadcast service from the target base station; wherein, the second frequency selection area identifier includes the non-terrestrial network frequency selection area identifier or the terrestrial network frequency selection area identifier corresponding to the first broadcast service; The first broadcast service is received based on the first frequency selection area identifier and the second frequency selection area identifier.

2. The method according to claim 1, wherein, Receiving the first broadcast service based on the first frequency selection area identifier and the second frequency selection area identifier includes: Based on the second frequency selection area identifier, a third frequency selection area identifier is determined from the first frequency selection area identifier; The first broadcast service is received based on the second frequency selection area identifier and the third frequency selection area identifier.

3. The method according to claim 1, wherein, The first information is a service announcement sent by the first network-side device or the local configuration information of the terminal device; the local configuration information stores at least one broadcast service and the non-terrestrial network frequency selection area identifier and terrestrial network frequency selection area identifier corresponding to the at least one broadcast service, and the at least one broadcast service includes the first broadcast service; The step of obtaining the first frequency selection region identifier corresponding to the first broadcast service based on the first information used to obtain the frequency selection region identifier includes: The first frequency selection area identifier corresponding to the first broadcast service is obtained by parsing the service announcement. or, Based on the first broadcast service, the first frequency selection area identifier corresponding to the first broadcast service is obtained by filtering from the local configuration information.

4. The method according to claim 1, wherein, The target base station satisfies any one of the following: When the terminal device is located only in an area not covered by a terrestrial network, the target base station is a non-terrestrial communication base station; When the terminal device is located only in the coverage area of ​​the terrestrial network, the target base station is a terrestrial communication base station; When the terminal device is located in the coverage area of ​​both non-terrestrial and terrestrial networks, the target base station is either a non-terrestrial communication base station or a terrestrial communication base station, and the target base station is determined by the terminal device. Wherein, if the target base station is a non-terrestrial communication base station, the second frequency selection area identifier includes the non-terrestrial network frequency selection area identifier corresponding to the first broadcast service; if the target base station is a terrestrial communication base station, the second frequency selection area identifier includes the terrestrial network frequency selection area identifier corresponding to the first broadcast service.

5. The method according to claim 1, wherein, The second frequency selection area identifier is obtained by the target base station from at least one of the following messages: a broadcast session establishment request message for the first broadcast service; or a broadcast session establishment update request message for the first broadcast service.

6. A wireless communication method applied to a second network-side device, the method comprising: Obtain the non-terrestrial network frequency selection area identifier and the terrestrial network frequency selection area identifier corresponding to the first broadcast service; wherein, the first broadcast service is a broadcast service provided simultaneously by the non-terrestrial network and the terrestrial network; Send a second frequency selection area identifier corresponding to the first broadcast service to each of the at least one base station; wherein the second frequency selection area identifier includes the non-terrestrial network frequency selection area identifier or the terrestrial network frequency selection area identifier.

7. The method according to claim 6, wherein, Sending the second frequency selection area identifier corresponding to the first broadcast service to each of at least one base station includes: Identify at least one Access and Mobility Management Function (AMF) located within the service area of ​​the first broadcast service; Based on the network access capability information of the at least one AMF, the second frequency selection area identifier corresponding to the first broadcast service is sent to each of the at least one base station through the at least one AMF; wherein the network access capability information is any one of the following: simultaneously supporting access to non-terrestrial networks and terrestrial networks; supporting only access to non-terrestrial networks; or supporting only access to terrestrial networks.

8. The method according to claim 7, wherein, The step of sending the second frequency selection area identifier corresponding to the first broadcast service to each of the at least one base station through the at least one AMF, based on the network access capability information of the at least one AMF, includes: For each of the at least one AMF, send the fourth frequency selection area identifier corresponding to the first broadcast service and the network access capability information of the AMF to the AMF; The fourth frequency selection region identifier is used by the AMF to send the second frequency selection region identifier corresponding to the first broadcast service to the base station corresponding to the AMF; the second frequency selection region identifier includes at least a portion of the frequency selection region identifier in the fourth frequency selection region identifier. The fourth frequency selection region identifier satisfies any one of the following: When the AMF's network access capability information supports access to both non-terrestrial networks and terrestrial networks simultaneously, the fourth frequency selection area identifier includes the non-terrestrial network frequency selection area identifier and the terrestrial network frequency selection area identifier corresponding to the first broadcast service. When the AMF's network access capability information indicates that it only supports access to non-terrestrial networks, the fourth frequency selection area identifier includes the non-terrestrial network frequency selection area identifier corresponding to the first broadcast service. When the AMF's network access capability information indicates that it only supports access to terrestrial networks, the fourth frequency selection area identifier includes the terrestrial network frequency selection area identifier.

9. The method according to claim 7, wherein, Before sending the second frequency selection area identifier corresponding to the first broadcast service to each of the at least one base station through the at least one AMF based on the network access capability information of the at least one AMF, the method further includes: Send a discovery request message to the Network Storage Function (NRF); Receive the discovery response message from the NRF; wherein the discovery response message carries network access capability information of at least one AMF; the network access capability information of each AMF is determined by second information sent by the AMF, the second information being used to indicate the network access capability information of the AMF.

10. The method according to claim 6, wherein, The step of obtaining the non-terrestrial network frequency selection area identifier and the terrestrial network frequency selection area identifier corresponding to the first broadcast service includes: Based on the third information used to obtain the frequency selection area identifier, obtain the non-terrestrial network frequency selection area identifier and the terrestrial network frequency selection area identifier corresponding to the first broadcast service. The third information is either information sent by the third network-side device or local configuration information of the second network-side device.

11. A wireless communication method applied to a fourth network-side device, the method comprising: Obtain the fourth frequency selection area identifier corresponding to the network access capability information of the fourth network-side device for the first broadcast service; wherein, the first broadcast service is a broadcast service provided simultaneously by a non-terrestrial network and a terrestrial network; the network access capability information is any one of the following: simultaneously supports access to both a non-terrestrial network and a terrestrial network; only supports access to a non-terrestrial network; only supports access to a terrestrial network; the fourth frequency selection area identifier includes at least one of the non-terrestrial network frequency selection area identifier and the terrestrial network frequency selection area identifier corresponding to the first broadcast service. According to the fourth frequency selection region identifier, a second frequency selection region identifier corresponding to the first broadcast service is sent to each of the at least one base station; wherein, the second frequency selection region identifier includes at least a portion of the frequency selection region identifier in the fourth frequency selection region identifier; the second frequency selection region identifier includes the non-terrestrial network frequency selection region identifier or the terrestrial network frequency selection region identifier.

12. The method according to claim 11, wherein, Before obtaining the fourth frequency selection area identifier corresponding to the network access capability information of the first broadcast service and the fourth network-side device, the method further includes: Send a second message to the fifth network-side device, the second message being used to indicate the network access capability information of the fourth network-side device.

13. The method according to claim 12, wherein, If the second information carries the network access capability information of the fourth network-side device, the network access capability information of the fourth network-side device is the network access capability information carried in the second information. If the second information does not carry the network access capability information of the fourth network-side device, the network access capability information of the fourth network-side device is that it only supports access to terrestrial networks.

14. The method according to claim 12, wherein, The second piece of information is either a capability registration request or a capability update request.

15. A communication device, comprising: At least one processor; At least one memory for storing at least one program; in The wireless communication method according to any one of claims 1 to 14 is implemented when at least one of the programs is executed by at least one of the processors.

16. A computer-readable storage medium storing computer-executable instructions, wherein, The computer-executable instructions are used to execute the wireless communication method according to any one of claims 1 to 14.

17. A computer program product comprising a computer program or computer instructions, wherein, The computer program or the computer instructions are stored in a computer-readable storage medium. The processor of the communication device reads the computer program or the computer instructions from the computer-readable storage medium and executes the computer program or the computer instructions, causing the communication device to perform the wireless communication method according to any one of claims 1 to 14.

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