MII reporting method, MII receiving method, device, and medium

Abstract

The present application discloses an MBS interest indication (MII) reporting method, an MII receiving method, a device, and a medium. The MII reporting method is executed by a user equipment, and comprises: when the user equipment enters or leaves a service area corresponding to an MBS broadcast service, supporting triggering an MII reporting procedure. In the technical solution, in a scenario in which a user equipment enters or leaves a service area corresponding to an MBS broadcast service, a MII reporting procedure can be triggered, so as to ensure that the user equipment can report an MII in a timely manner during movement, and a network device can learn, in a timely manner, of a latest MBS broadcast service that the user equipment is receiving or is interested in receiving, thereby improving the reliability of the MBS broadcast service.

Description

A method, device and medium for MII reporting and receiving. Technical Field

[0001] This application relates to the field of communication technology, and in particular to a method, device and medium for MII reporting and receiving. Background Technology

[0002] Although 5G has begun commercial use, its coverage in remote ocean and land areas is limited by geographical conditions and business models. To overcome these terrain limitations, integrating satellite communication with terrestrial networks to create a seamless global, integrated air-sea-ground network has become a research hotspot in academia and industry. International organizations such as 3GPP and ITU have established working groups to conduct standardization research on satellite-terrestrial integration. Among these, the 3GPP project on Non-terrestrial Networks (NTN) focuses on integrating satellite communication with 5G, addressing key issues in New Radio (NR) support for NTN. Its standardization work will lay the technological foundation for 6G satellite-terrestrial integration research. Future integrated air-space-ground networks will primarily focus on deep integration, combining diverse communication platforms to provide broader and more diversified communication services.

[0003] User equipment (UE) can report MBS Interest Indication (MII) to network equipment (such as base stations) to notify the network that the UE is receiving or is interested in receiving MBS broadcast services, facilitating the network side to allocate network resources appropriately for MBS broadcast services. MII can only be reported after Access Stratum (AS) security activation.

[0004] However, in existing technical research, access network equipment in non-terrestrial networks, such as non-Geostationary Orbit (NGSO) and Low Earth Orbit (LEO) satellites, has a very large coverage area, sometimes reaching hundreds of square kilometers. Different areas within this coverage area may require different services. During UE movement, the services a UE is receiving or interested in receiving (MBS) broadcast services can change at any time. Because the UE cannot report its MII (Mean Indicator) in a timely manner, network equipment cannot promptly obtain information about the MBS broadcast services the UE is receiving or interested in receiving. Therefore, it cannot allocate network resources in a timely and reasonable manner, potentially leading to insufficient network resources for the MBS broadcast services, resulting in packet loss, interruption, or reception failure. Alternatively, reserving too many or unnecessary network resources for MBS broadcast services may also lead to resource waste and affect the reception of other types of services. The reliability of MBS broadcast services needs improvement. Summary of the Invention

[0005] To address the aforementioned problem of the inability to report MII in a timely manner, this application provides a method, device, and medium for reporting and receiving MII.

[0006] This application provides a method for MII reporting, which is executed by a user equipment and includes:

[0007] When a user device enters or leaves the service area corresponding to the MBS broadcast service, it supports triggering the MBS Interest Indication (MII) reporting process.

[0008] This application provides a method for receiving MII, including:

[0009] Receive MBS Interest Indication MII reported by the user equipment;

[0010] Scenarios that support user equipment triggering the MII reporting process include: user equipment entering or leaving the service area corresponding to the MBS broadcast service.

[0011] This application provides an MII reporting device, including:

[0012] The triggering module is used to trigger the MBS Interest Indication (MII) reporting process when a user device enters or leaves the service area corresponding to the MBS broadcast service.

[0013] This application provides an MII reporting device, including:

[0014] The receiving module is used to receive MBS Interest Indication (MII) reported by the user equipment.

[0015] Scenarios that support user equipment triggering the MII reporting process include: user equipment entering or leaving the service area corresponding to the MBS broadcast service.

[0016] This application provides a network device, including:

[0017] One or more processors;

[0018] Storage device for storing one or more programs;

[0019] When the one or more programs are executed by the one or more processors, the one or more processors implement the MII reporting method described above.

[0020] This application provides a user equipment, including:

[0021] One or more processors;

[0022] Storage device for storing one or more programs;

[0023] When the one or more programs are executed by the one or more processors, the one or more processors implement the MII reporting method described above.

[0024] This application also provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the above-described MII reporting method.

[0025] This application provides an MII reporting and receiving method, device, and medium. The MII reporting method is executed by a user equipment (UE) and includes: when the UE enters or leaves the service area corresponding to an MBS broadcast service, it supports triggering an MBS Interest Indication (MII) reporting process. This technical solution, by triggering the MII reporting process when the UE enters or leaves the service area corresponding to the MBS broadcast service, ensures that the UE can promptly report its MII during movement, enabling network devices to promptly obtain the latest MBS broadcast services that the UE is receiving or is interested in receiving, thus improving the reliability of the MBS broadcast service. Attached Figure Description

[0026] The features, advantages, and aspects of the embodiments disclosed in this application will become more apparent from the accompanying drawings and the following detailed description. Throughout the drawings, the same or similar reference numerals denote the same or similar elements. It should be understood that the drawings are schematic, and the originals and elements are not necessarily drawn to scale.

[0027] Figure 1 is a flowchart of a MII reporting method provided in an embodiment of this application;

[0028] Figure 2 is a schematic diagram illustrating the relationship between the service area of ​​an MBS broadcast service and an NTN cell according to an embodiment of this application;

[0029] Figure 3 is a flowchart of a method for receiving MII provided in an embodiment of this application;

[0030] Figure 4 is a schematic diagram of the structure of an MII reporting device provided in an embodiment of this application;

[0031] Figure 5 is a schematic diagram of the structure of a MII receiving device provided in an embodiment of this application. Detailed Implementation

[0032] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the application and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present application, not the entire structure.

[0033] Before discussing the exemplary embodiments in more detail, it should be noted that some exemplary embodiments are described as processes or methods depicted as flowcharts. Although the flowcharts describe the steps as sequential processes, many of these steps can be performed in parallel, concurrently, or simultaneously. Furthermore, the order of the steps can be rearranged. The process can be terminated when its operation is complete, but may also have additional steps not included in the figures. The process can correspond to a method, function, procedure, subroutine, subroutine, etc.

[0034] Furthermore, the embodiments and features described in this application may be combined with each other, unless otherwise specified.

[0035] In existing technologies, access network equipment in non-terrestrial networks has a very large coverage area, but different areas within the coverage area may require different services. During movement, the services a UE is receiving or interested in receiving (MBS) broadcast services can change at any time. Because the UE cannot report its MII (Minimum Indicator) in a timely manner, network equipment cannot promptly obtain information about the MBS broadcast services the UE is receiving or interested in receiving. Therefore, it cannot allocate or optimize network resources in a timely and reasonable manner based on the latest MII information. This may result in insufficient network resources for the MBS broadcast services being received or interested in receiving by the UE, leading to packet loss, interruption, or reception failure. Alternatively, reserving too many or unnecessary network resources for MBS broadcast services may also lead to resource waste, affecting the reception of other types of services, impacting the reliability of MBS broadcast services, and requiring improvement in the quality of service (QoS) of MBS broadcast services.

[0036] An exemplary application scenario is as follows: Before a UE enters the service area of ​​an MBS broadcast service (such as MBS1), the MBS broadcast service it is receiving or is interested in receiving is another MBS broadcast service (such as MBS2). When entering the service area of ​​MBS1, the MBS broadcast service it is receiving or is interested in receiving becomes MBS1. However, because the UE does not report the MII to the network device in a timely manner, the network device still thinks that the MBS broadcast service the UE is receiving or is interested in receiving is MBS2. Therefore, it does not allocate enough network resources for MBS1, resulting in MBS1 packet loss, terminal failure, or reception failure.

[0037] Another exemplary application scenario is: a UE is receiving or is interested in receiving MBS broadcast services (such as MBS3) within a service area of ​​MBS broadcast services. When leaving the service area of ​​MBS3, the MBS broadcast service being received or interested in becomes another MBS broadcast service (such as MBS4). MBS3 is no longer the MBS broadcast service that the UE is receiving or is interested in receiving. However, because the UE does not report the MII to the network device in a timely manner, the network device still believes that the MBS broadcast service that the UE is receiving or is interested in receiving is MBS3. Therefore, it does not allocate enough network resources for MBS4, resulting in MBS4 packet loss, terminal failure, or reception failure.

[0038] This application provides a method for reporting and receiving MII. For MBS broadcast services, when a network device enters or leaves the service area corresponding to the MBS broadcast service, it can report the MII to the network device. This ensures that the user equipment can report the MII in a timely manner during its movement, so that the network device can know in a timely manner what MBS broadcast services the user equipment is receiving or is interested in receiving based on the latest MII. This allows for the reasonable scheduling or optimization of network resources for MBS broadcast services, thereby improving the reliability and quality of service of MBS broadcast services.

[0039] The user equipment (UE) in this application embodiment can be referred to as a terminal, which can be a mobile terminal, a vehicle-mounted terminal, etc. The UE includes any device that provides voice and / or data connectivity to the user, such as wireless terminal devices, mobile terminal devices, device-to-device (D2D) terminal devices, vehicle-to-everything (V2X) terminal devices, machine-to-machine / machine-type communications (M2M / MTC) terminal devices, Internet of Things (IoT) terminal devices, light UE, reduced-capability UE (REDCAP UE), subscriber unit, subscriber station, mobile station, remote station, access point (AP), remote terminal, access terminal, user terminal, user agent, or user device, etc. It can also be user equipment in future communication systems, but this patent is not limited to this.

[0040] The network devices in this application embodiment can be access network devices, core network devices, or servers, etc. Access network devices can be base stations in terrestrial communication networks or base stations in NTN networks. For example, evolved NodeBs (eNBs), next-generation nodes (gNBs) in NR systems, roadside units (RSUs), centralized units (CUs) and distributed units (DUs) in cloud access network systems, and access network devices in future communication systems. Core network devices can be Mobility Management Entities (MMEs), Serving Gateways (SGWs), Packet Data Node Gateways (PGWs), Home Subscriber Servers (HSSs) storing user subscription information, Policy and Charging Rule Functions (PCRFs), etc., and can also be core network devices in future communication systems; this application is not limited to these.

[0041] Figure 1 is a flowchart of a MII reporting method provided in an embodiment of this application. This embodiment is applicable to situations that trigger MII reporting. Specifically, the MII reporting method can be executed by an MII reporting device, which can be implemented in software and / or hardware and integrated into a network device.

[0042] As shown in Figure 1, the sending method provided in this embodiment of the application can be divided into the following steps:

[0043] S110. When a user equipment enters or leaves the service area corresponding to the MBS broadcast service, it supports triggering the MBS Interest Indication (MII) reporting process.

[0044] In this embodiment, the MBS Interest Indicator can be used to indicate information related to MBS broadcast services that the UE is receiving or is interested in receiving. Conditions or scenarios that trigger the MBS Interest Indicator MII reporting process include: the UE entering or leaving the service area corresponding to the MBS broadcast service.

[0045] It should be noted that the MBS broadcast service mentioned here can be a single MBS broadcast service or multiple MBS broadcast services. Furthermore, multiple MBS broadcast services here include two or more MBS broadcast services. Further, an MBS broadcast service can be all MBS broadcast services, including all MBS broadcast services that the UE is interested in, all MBS broadcast services that the UE is currently receiving or is about to receive, and all MBS broadcast services in the MBS interest list. Further, an MBS broadcast service can be one MBS broadcast service among all MBS broadcast services, or multiple MBS broadcast services within all MBS broadcast services.

[0046] It should be noted that the service area corresponding to the MBS broadcast service here can be one service area or multiple service areas. The service area can include the area covered by the transmitting device connected to the NTN network, or the area within an NTN cell covered by the transmitting device connected to the NTN network. Within an NTN cell, there can be one or more service areas. In one embodiment, when a UE enters or leaves one or more service areas corresponding to an MBS broadcast service, it supports triggering the MBS Interest Indication (MII) reporting procedure.

[0047] In one embodiment, when a UE enters or leaves one or more service areas corresponding to an MBS broadcast service, it can trigger the MBS Interest Indication (MII) reporting process.

[0048] It is important to note that when a UE enters or leaves the service area corresponding to the MBS broadcast service, MII reporting can be triggered. Whether or not MII reporting is triggered can be determined based on the actual situation. In other words, when a UE enters or leaves the service area corresponding to the MBS broadcast service, MII reporting can be triggered or not.

[0049] For example, the UE can determine whether to trigger the MII reporting process based on whether there is a difference between the current MII and the MII reported before entering or leaving the service area corresponding to the MBS broadcast service, whether the current resource allocation of the MBS broadcast service is reasonable, and / or the priority and / or service type of the MBS broadcast service.

[0050] For example, if the current MII is no different from the MII reported before entering or leaving the service area corresponding to the MBS broadcast service, the MII reporting process can be skipped; if the current MII is different from the MII reported before entering or leaving the service area corresponding to the MBS broadcast service, the MII reporting can be triggered.

[0051] If the current resource allocation of the MBS broadcast service is reasonable, for example, if the priority of the MBS broadcast service indicated in the MII is higher than the priority of other services, or if there are sufficient resources for the MBS broadcast service that the UE is receiving or is interested in receiving, the resource allocation may not need to be adjusted or optimized, and the MII reporting process may not be triggered. If the current resource allocation of the MBS broadcast service is not reasonable, for example, if the priority of the MBS broadcast service indicated in the MII is higher than the priority of other services, and there are insufficient resources for the MBS broadcast service that the UE is receiving or is interested in receiving, it indicates that the resource allocation may need to be adjusted or optimized, and the MII reporting process may be triggered.

[0052] If the MBS broadcast service being received or of interest as indicated in the MII has a high priority and / or is of a significant type, then providing sufficient resources for the MBS broadcast service will have a greater impact on its quality of service. In this case, the MII reporting process can be triggered to ensure that the network equipment can provide sufficient resources for the MBS broadcast service. If the MBS broadcast service being received or of interest as indicated in the MII has a low priority and / or is of an unimportant type, then providing sufficient resources for the MBS broadcast service will have a smaller impact on its quality of service. In this case, the MII reporting process can be skipped.

[0053] In an exemplary application scenario: Before a UE enters the service area of ​​an MBS broadcast service (such as MBS1), the MBS broadcast service it is receiving or is interested in receiving is another MBS broadcast service (such as MBS2). When entering the service area of ​​MBS1, the MBS broadcast service it is receiving or is interested in receiving changes to MBS1. In this case, the MII reporting process can be triggered, thereby reporting the MII to the network device in a timely manner. The network device can promptly know that the MBS broadcast service the UE is receiving or is interested in receiving is MBS2, and thus allocate sufficient network resources to MBS1 to avoid MBS1 packet loss, terminal failure, or reception failure.

[0054] In another exemplary application scenario: A UE is receiving or is interested in receiving MBS broadcast services (such as MBS3) within a service area of ​​MBS broadcast services. When leaving the service area of ​​MBS3, the MBS broadcast service being received or being interested in becomes another MBS broadcast service (such as MBS4). MBS3 is no longer the MBS broadcast service that the UE is receiving or is interested in receiving. In this case, the MII reporting process can be triggered to promptly report the MII to the network device. The network device can then promptly learn that the MBS broadcast service that the UE is receiving or is interested in receiving is MBS4, and thus allocate sufficient network resources for MBS4 to avoid MBS4 packet loss, terminal failure, or reception failure.

[0055] The MII process triggering method in this application embodiment treats the UE entering or leaving the service area corresponding to the MBS broadcast service as a scenario that can trigger the MBS Interest Indication MII reporting process. This ensures that the user equipment can report the MII in a timely manner during movement, enabling the network equipment to promptly obtain the latest MBS broadcast services that the user equipment is receiving or is interested in receiving. This allows the network equipment to reasonably adjust or optimize network resources and improve the reliability and service quality of the MBS broadcast service.

[0056] In one embodiment, the user equipment may be in an RRC connected (RRC_CONNECTED) state.

[0057] In other words, for a user equipment in the RRC_CONNECTED state, the scenarios that can trigger the MII process include: the user equipment entering or leaving the service area corresponding to the MBS broadcast service.

[0058] Accordingly, by reporting the MII, the network can notify UEs in the RRC_CONNECTED state that they are receiving or are interested in receiving MBS broadcast services. It can also notify the network of the priority of radio bearers, enabling them to adjust transmission resources.

[0059] It should be noted that in some embodiments, it is also possible for UEs in the RRC idle (RRC_IDLE) state or RRC inactive (RRC_INACTIVE) state to trigger the MII reporting process when entering or leaving the service area corresponding to the MBS broadcast service.

[0060] In one embodiment, the user equipment has MBS capability.

[0061] In other words, for a user equipment with MBS capabilities, the scenarios that can trigger the MII process include: the user equipment entering or leaving the service area corresponding to the MBS broadcast service.

[0062] It should be noted that the user equipment has MBS capability, meaning that the user equipment can receive MBS services, which include MBS broadcast services and / or MBS multicast services. Furthermore, the user equipment can also simultaneously receive unicast services.

[0063] Accordingly, the network device can promptly obtain the MII of UEs capable of receiving MBS broadcast services, and adjust or optimize network resources accordingly for UEs capable of receiving MBS broadcast services. In one embodiment, the method further includes:

[0064] When a user equipment enters or leaves the service area corresponding to the MBS broadcast service, the MII is generated according to the current situation.

[0065] The current situation can be understood as the information related to the UE receiving the MBS broadcast service when the UE enters or leaves the service area corresponding to the MBS broadcast service.

[0066] For example, the MBS frequency where the MBS broadcast service the UE is receiving or interested in is located; information about MBS broadcast services in the serving cell the UE has entered or left; information about non-serving cells, where the serving cell can refer to the cell the UE is currently in (the service area it has entered or left), and the non-serving cell can be other cells besides the serving cell, such as neighboring cells of the serving cell, the cell the UE was in before entering the serving cell, and / or the cell the UE is in after leaving the serving cell; information about MBS broadcast services in non-serving cells; and the relationship between the priority of MBS broadcast services and the priority of other services (such as unicast services and / or MBS multicast services). Based on this, it can be ensured that the UE reports its MII in a timely manner during movement, and that the MII is generated based on the latest situation, enabling network equipment to make timely and reliable decisions, further improving the service quality of MBS broadcast services.

[0067] In one embodiment, the MII includes at least one of the following:

[0068] The MBS frequency list (which can be called mbs-FreqList) is used to indicate the MBS frequencies on which the UE is receiving or is interested in MBS broadcast services.

[0069] The MBS non-serving cell information list (which can be called mbs-NonServingInfoList) is used to indicate information about receiving MBS broadcast services in non-serving cells. The non-serving cell can be a cell other than the serving cell where the UE is located, such as a neighboring cell of the serving cell where the UE is located. Based on the information about receiving MBS broadcast services in non-serving cells, the cell handover process in the subsequent MBS broadcast service reception can be provided.

[0070] Priority information (which can be called mbs-Priority) is used to indicate the relationship between the priority of MBS broadcast service and the priority of other services, that is, whether the UE prioritizes receiving MBS broadcast service over receiving unicast service and MBS multicast service. Other services include unicast service and MBS multicast service. For example, priority information can indicate whether the priority of MBS broadcast service is higher than that of unicast and MBS multicast service.

[0071] The service list (which can be called mbs-ServiceList) is used to indicate the MBS broadcast services that the UE is receiving or is interested in. It can include the MBS broadcast services that the UE is receiving or is interested in in the current serving cell, or the MBS broadcast services that the UE is receiving or is interested in in the serving cells it enters or leaves.

[0072] Optionally, the priority information indicating the relationship between the priority of the MBS broadcast service and the priorities of other services can be in any of the following ways:

[0073] Method 1:

[0074] If the MII includes priority information, i.e., the MII contains an mbs-Priority field, it is used to indicate that the priority of MBS broadcast services is higher than that of unicast and MBS multicast services.

[0075] If the MII does not include priority information, that is, the mbs-Priority field does not exist in the MII, it is used to indicate that the priority of MBS broadcast services is not higher than that of unicast and MBS multicast services.

[0076] If the MII includes priority information to indicate that the priority of MBS broadcast services is higher than that of unicast and MBS multicast services, the value of this priority information can be true.

[0077] Method 2:

[0078] The MII includes priority information. If the value in the priority information is the first specified value (true) or the first unspecified value (such as 1, 0 or other values), it means that the priority of MBS broadcast service is higher than that of unicast and MBS multicast service.

[0079] The MII includes priority information. If the value in the priority information is the second specified value false, or the second unspecified value (such as 0 or 1), it means that the priority of MBS broadcast service is not higher than that of unicast and MBS multicast service.

[0080] For example, the data structure of MII is as follows:

[0081] In this data structure, mbsInterestIndication represents the MII, mbs-FreqList-r17 represents the MBS frequency list, mbs-Priority represents priority information, mbs-ServiceList represents the service list, and mbs-NonServingInfoList represents the MBS non-serving cell information list. It should be noted that the above data structure is illustrative, and this embodiment does not impose specific limitations on the naming and format of each piece of information.

[0082] Optionally, priority information can be associated with MBS broadcast services. Regarding priority information, the UE can also report specific MBS broadcast services, such as reporting the MBS service identifier, so that network devices can know the priority information of specific MBS broadcast services. For example, if the priority information indicates that the priority of MBS broadcast services is higher than unicast and MBS multicast services, and the MBS service identifier reported by the UE corresponds to the three MBS broadcast services MBS1, MBS3, and MBS4, then it means that the priority of MBS1, MBS3, and MBS4 is higher than that of unicast and MBS multicast services. However, for other MBS broadcast services (such as MBS2), their priority is not higher than that of unicast and MBS multicast services, meaning there are unicast or MBS multicast services with a higher priority than MBS2.

[0083] In one embodiment, the radio bearer of the MBS broadcast service is adjusted according to the MII.

[0084] For example, based on the MII, radio bearers can be adjusted for MBS broadcast services that the UE is receiving or interested in. For instance, some radio bearers can be released or reserved for MBS broadcast services that the UE is receiving or interested in, and which have a higher priority than unicast and MBS multicast services. Conversely, for MBS broadcast services that the UE is receiving or interested in, and which have a lower priority than unicast and MBS multicast services, some radio bearers can be released or reserved, while for MBS broadcast services that the UE is receiving or interested in, and which do not have a higher priority than unicast and MBS multicast services, the radio bearers can be either not released or reserved, or their corresponding radio bearers can be released. Based on this, it is possible to ensure that appropriate radio bearers are provided for MBS broadcast services, making full use of network resources.

[0085] In one embodiment, the radio bearer of the MBS broadcast service satisfies at least one of the following:

[0086] If the MII contains priority information, and / or the priority information indicates that the priority of the MBS broadcast service is higher than the priority of other services, then one or more radio bearers are released or suspended.

[0087] If the MII does not contain priority information, and / or the priority information indicates that the priority of the MBS broadcast service is not higher than the priority of other services, then there is no radio bearer or it is suspended.

[0088] If the MII does not contain priority information, and / or the priority information indicates that the priority of the MBS broadcast service is not higher than the priority of other services, then one or more previously released or suspended radio bearers are restored, rebuilt, or reactivated.

[0089] The other services include unicast services and / or multicast services and / or broadcast services.

[0090] Specifically, regarding the method of indicating the relationship between the priority of MBS broadcast services and the priorities of other services by whether or not priority information is included in the MII:

[0091] If the MII contains priority information, it means that the MBS broadcast service has a higher priority than the unicast service and the MBS multicast service; accordingly, the radio bearer can be adjusted, such as releasing, suspending, rebuilding, resuming or activating.

[0092] If priority information is not included in the MII, it means that the priority of MBS broadcast service is not higher than that of unicast service and MBS multicast service; accordingly, the radio bearer can be adjusted, such as not releasing, not suspending, not rebuilding, not restoring, or not activating.

[0093] The method of indicating whether the priority of MBS broadcast services is higher than the priority of other services by using the priority information value in MII:

[0094] If the priority information in the MII is set to the first specified value (true) or the first unspecified value, it indicates that the priority of MBS broadcast service is higher than that of unicast service and MBS multicast service; accordingly, the radio bearer can be adjusted, such as releasing, suspending, rebuilding, resuming, or activating.

[0095] If the priority information in the MII is set to the second specified value false or the second unspecified value, it means that the priority of the MBS broadcast service is not higher than that of the unicast service and the MBS multicast service; accordingly, the radio bearer can be adjusted, such as not releasing, not suspending, not rebuilding, not restoring, or not activating.

[0096] It should be noted that MBS broadcast services here have higher priority than unicast and MBS multicast services. This can mean that MBS broadcast services associated with this MII have higher priority than unicast and MBS multicast services, or that one or more MBS broadcast services that the UE is receiving or is interested in have higher priority than unicast and MBS multicast services, or other MBS broadcast services.

[0097] Here, the priority of MBS broadcast service is higher than that of unicast service and MBS multicast service. This can be either MBS broadcast service having a higher priority than unicast service, MBS broadcast service having a higher priority than MBS multicast service, or MBS broadcast service having a higher priority than unicast service and MBS multicast service.

[0098] Here, MBS broadcast services have higher priority than unicast and MBS multicast services. This can mean that MBS broadcast services have higher priority than one or more unicast services, or vice versa. Furthermore, multiple unicast services include all unicast services, and multiple MBS multicast services include all MBS multicast services.

[0099] In other words, MBS broadcast services have a higher priority than unicast services and MBS multicast services. This could mean that MBS broadcast services have a higher priority than some unicast services and some MBS multicast services, or that MBS broadcast services have a higher priority than all unicast services and all MBS multicast services, or that MBS broadcast services have a higher priority than any unicast service and any MBS multicast service.

[0100] It should be noted that the priority of MBS broadcast services here is no higher than that of unicast services and MBS multicast services. This can mean that the MBS broadcast services associated with this MII are no higher than unicast services and MBS multicast services, or that one or more MBS broadcast services that the UE is receiving or is interested in are no higher than unicast services and MBS multicast services, or other MBS broadcast services.

[0101] The priority of MBS broadcast service here is no higher than that of unicast service and MBS multicast service. This can mean that the priority of MBS broadcast service is no higher than that of unicast service, or that the priority of MBS broadcast service is no higher than that of MBS multicast service, or that the priority of MBS broadcast service is no higher than that of unicast service and MBS multicast service.

[0102] Here, the priority of MBS broadcast services is no higher than that of unicast services and MBS multicast services. This can mean that the priority of MBS broadcast services is no higher than that of one or more unicast services, or that the priority of MBS broadcast services is no higher than that of one or more MBS multicast services. Furthermore, multiple unicast services include all unicast services, and multiple MBS multicast services include all MBS multicast services.

[0103] In other words, the priority of MBS broadcast services is no higher than that of unicast services and MBS multicast services. This could mean that the priority of MBS broadcast services is no higher than that of some unicast services and some MBS multicast services, or that the priority of MBS broadcast services is no higher than that of all unicast services and all MBS multicast services, or that the priority of MBS broadcast services is no higher than that of any unicast service and any MBS multicast service.

[0104] Based on the priority information indicating the relationship between the priority of the MBS broadcast service and the priorities of other services, if the priority of the MBS broadcast service is higher than that of other services, one or more radio bearers may be released or suspended, thereby providing available radio bearers for the MBS broadcast service; if the priority of the MBS broadcast service is not higher than that of other services, no radio bearer adjustment operation may be performed (which can be understood as no radio bearer being released or suspended), or one or more previously released or suspended radio bearers may be restored, rebuilt, or reactivated.

[0105] For example, five radio bearers are established between the network device and the UE: RB1, RB2, RB3, RB4, and RB5. If the priority of the MBS broadcast service is higher than that of other services, one or more radio bearers can be released or suspended. For example, RB1 and RB2 can be released or suspended, and RB6 and RB7 can be established if the MBS broadcast service requires them. If the latest priority indicates that the priority of the MBS broadcast service is not higher than that of other services, the radio bearers do not need to be adjusted; that is, the five radio bearers RB1, RB2, RB3, RB4, and RB5 can remain. If the latest priority indicates that the priority of the MBS broadcast service is not higher than that of other services, one or more previously released or suspended radio bearers can be restored, rebuilt, or reactivated. Based on this, the adjustment of radio bearers can be determined according to the priority of the MBS broadcast service to improve the utilization of network resources.

[0106] In one embodiment, the radio bearer includes: a unicast bearer, and / or an MRB (MBS Radio Bearer).

[0107] DRB can be used for unicast transmission.

[0108] MBS (Multicast / Broadcast service) includes multicast and / or broadcast services.

[0109] Accordingly, the MBS radio bearer MRB may include a multicast MRB and / or a broadcast MRB.

[0110] In other words, a radio bearer may include a unicast bearer, and / or a multicast MRB, and / or a broadcast MRB.

[0111] Taking a single radio bearer as an example, the process of releasing a radio bearer may include at least one of the following situations:

[0112] For unicast service radio bearers, if the network device decides to release the radio bearer, then both the network device and the user equipment release the radio bearer.

[0113] For the multicast MRB of the MBS multicast service, if the network device decides to release the radio bearer, the network device sends an instruction to release the radio bearer to the user equipment in the group. After receiving the instruction, the user equipment in the group releases the radio bearer. The network device releases the radio bearer only if all user equipment in the group releases the radio bearer.

[0114] For the radio bearer broadcast MRB of MBS broadcast service, the network equipment decides whether to establish or release the radio bearer. During the establishment of the radio bearer, the user equipment can also decide whether to establish or release the radio bearer. For example, if the UE is interested in the MBS broadcast service, it will establish the radio bearer; if it is not interested in the MBS broadcast service, it will release the radio bearer.

[0115] Based on this, network equipment and user equipment can flexibly adjust the radio bearers of various MBS services according to their needs, providing suitable radio bearers for MBS broadcast services.

[0116] In one embodiment, the MBS broadcast service includes at least one of the following:

[0117] Serving MBS broadcast services within the community;

[0118] MBS broadcast services indicated in the service list included in MII;

[0119] The MBS broadcast service corresponding to the service area entered by the user equipment;

[0120] The MBS broadcast service corresponding to the service area that the user equipment leaves.

[0121] Specifically, MBS broadcast services can include MBS broadcast services within the serving cell:

[0122] If the MII reported by the UE can contain priority information, and / or the priority information can indicate that the priority of MBS broadcast services in the serving cell is higher than the priority of other services, then one or more radio bearers are released or suspended.

[0123] If the MII does not contain priority information, and / or the priority information contained in the MII indicates that the priority of the MBS broadcast service in the serving cell is not higher than the priority of other services, then there is no radio bearer or it is suspended.

[0124] If the MII does not contain priority information, and / or the priority information contained in the MII indicates that the priority of the MBS broadcast service in the serving cell is not higher than the priority of other services, then one or more previously released or suspended radio bearers are restored, rebuilt, or reactivated.

[0125] Specifically, MBS broadcast services may include the MBS broadcast services indicated in the service list contained in the MII:

[0126] If the MII reported by the UE can contain priority information, and / or the priority information can indicate that the priority of the MBS broadcast service indicated in the service list contained in the MII is higher than the priority of other services, then one or more radio bearers are released or suspended.

[0127] If the MII does not contain priority information, and / or the priority information contained in the MII indicates that the priority of the MBS broadcast service indicated in the service list contained in the MII is not higher than the priority of other services, then there is no radio bearer or it is suspended.

[0128] If the MII does not contain priority information, and / or the priority information contained in the MII indicates that the priority of the MBS broadcast service indicated in the service list contained in the MII is not higher than the priority of other services, then one or more previously released or suspended radio bearers are restored, rebuilt, or reactivated.

[0129] Specifically, MBS broadcast services can include MBS broadcast services corresponding to the service area entered by the user equipment:

[0130] The MII reported by the UE may contain priority information, and / or the priority information may indicate that the priority of the MBS broadcast service corresponding to the service area entered by the user equipment is higher than the priority of other services, then one or more radio bearers are released or suspended.

[0131] If the MII does not contain priority information, and / or the priority information contained in the MII indicates that the priority of the MBS broadcast service corresponding to the service area entered by the user equipment is not higher than the priority of other services, then there is no radio bearer or it is suspended.

[0132] If the MII does not contain priority information, and / or the priority information contained in the MII indicates that the priority of the MBS broadcast service corresponding to the service area entered by the user equipment is not higher than the priority of other services, then one or more previously released or suspended radio bearers are restored, rebuilt, or reactivated.

[0133] Specifically, MBS broadcast services can include MBS broadcast services corresponding to the service area where the user equipment leaves:

[0134] The MII reported by the UE may contain priority information, and / or the priority information may indicate that the priority of the MBS broadcast service corresponding to the service area that the user equipment leaves is higher than the priority of other services, then one or more radio bearers are released or suspended.

[0135] If the MII does not contain priority information, and / or the priority information contained in the MII indicates that the priority of the MBS broadcast service corresponding to the service area that the user equipment leaves is not higher than the priority of other services, then there is no radio bearer or it is suspended.

[0136] If the MII does not contain priority information, and / or the priority information contained in the MII indicates that the priority of the MBS broadcast service corresponding to the service area that the user equipment left is not higher than the priority of other services, then one or more previously released or suspended radio bearers are restored, rebuilt, or reactivated.

[0137] It should be noted that a serving cell can contain one or more MBS broadcast service areas. A single MBS broadcast service can correspond to one or more service areas. Different service areas can correspond to different MBS broadcast services, or they can contain the same MBS broadcast service.

[0138] Suppose a UE reaches the boundary between service area A and service area B in the serving cell, leaves service area A and enters service area B; the MBS broadcast services in the serving cell include MBS1, MBS2 and MBS3; the MBS broadcast services that the UE is receiving or is interested in, as indicated in the service list, are MBS2 and MBS3; the MBS broadcast service corresponding to service area B that the UE enters is MBS2; the MBS broadcast service corresponding to service area A that the UE leaves is MBS3; then the UE can trigger MII reporting when leaving service area A and / or entering service area B.

[0139] The priority information in MII can be the priority information of one or more MBS broadcast services in the serving cell (i.e., indicating whether the priority of MBS1, MBS2 and / or MBS3 is higher than the priority of other services), or the priority information of one or more MBS broadcast services indicated in the service list (i.e., indicating whether the priority of MBS2 and / or MBS3 is higher than the priority of other services), or the priority information of one or more MBS broadcast services corresponding to the service area B to which it is entering (i.e., indicating whether the priority of MBS2 is higher than the priority of other services), or the priority information of one or more MBS broadcast services corresponding to the service area A to which it is leaving (i.e., indicating whether the priority of MBS3 is higher than the priority of other services), etc., where other services include unicast and MBS multicast services.

[0140] In one embodiment, the scenarios supporting user equipment triggering the MII reporting process also include at least one of the following:

[0141] When a connection is successfully established and / or restored (which could be an RRC connection, and / or a vehicle-to-vehicle connection, etc.), when an MBS broadcast session begins or ends, when switching to a primary cell (PCell) that supports SIB21, when receiving a secondary cell (SCell) via dedicated signaling from an SIB20, during handover, when an RRC connection is re-established, when switching to a PCell that provides a non-serving cell MII in SIB1, or when receiving MBS broadcast services in a non-serving cell.

[0142] Furthermore, scenarios supporting user equipment (UE) triggering the MII procedure also include: UE entering or leaving the service area corresponding to the MBS broadcast service. In other words, for a UE, scenarios that can trigger the MII procedure include: when a connection is successfully established and / or restored (which could be an RRC connection, and / or a vehicle-to-vehicle connection, etc.); when an MBS broadcast session begins or ends; when switching to a primary cell (PCell) supporting SIB21; when receiving a secondary cell (SCell) from a SIB20 via dedicated signaling; during handover; when an RRC connection is re-established; when switching to a PCell providing non-serving cell MII in SIB1; when starting or stopping receiving MBS broadcast services in a non-serving cell; and UE entering or leaving the service area corresponding to the MBS broadcast service.

[0143] Based on this, the UE can determine whether to trigger the MII reporting process in various scenarios, improving the flexibility and timeliness of MII reporting, enabling network devices to promptly learn about the latest MBS broadcast services that user equipment is receiving or is interested in receiving, thereby improving the reliability of MBS broadcast services.

[0144] In one embodiment, the method further includes:

[0145] Receive MBS control channel (Multicast / Broadcast Control Channel, MCCH), which is used to indicate MBS services and their corresponding service areas.

[0146] For example, for each MBS service, indication information of one or more service areas of the MBS service can be added to the MCCH. For instance, the identifiers of one or more service areas of the MBS service can be added to the MCCH.

[0147] For example, for each MBS broadcast service, indication information of one or more service areas of the MBS broadcast service can be added to the MCCH. For instance, the identifiers of one or more service areas of the MBS broadcast service can be added to the MCCH.

[0148] The UE can determine the service area corresponding to each MBS broadcast service based on the indication information in the MCCH. When entering or leaving the service area corresponding to any MBS broadcast service, the UE can trigger the MBS Interest Indication (MII) reporting process.

[0149] Based on this, the UE can clearly identify the MBS broadcast service and its corresponding service area, and then determine whether to trigger the MII reporting process and generate the latest MII when entering or leaving a certain service area.

[0150] In one embodiment, the MCCH includes an MBS service identifier corresponding to each MBS service, and identification information of the service area corresponding to each MBS service.

[0151] The service area corresponding to each MBS service can be indicated to the UE by the network device, for example, through system messages. The MCCH includes the MBS service identifier corresponding to each MBS service, and the identifier information of the service area corresponding to each MBS service. For example, the MCCH may include the MBS service identifier of at least one MBS service, and the service area corresponding to each MBS service; alternatively, the MCCH may include at least one service area, and the MBS service corresponding to each service area.

[0152] MBS services include MBS broadcast services and MBS multicast services.

[0153] In one embodiment, the MCCH includes an MBS broadcast service identifier corresponding to each MBS broadcast service, and identification information of the service area corresponding to each MBS broadcast service.

[0154] As an example, the service area corresponding to each MBS broadcast service can be indicated to the UE by the network device, for example, through a system message. The MCCH includes the MBS service identifier corresponding to each MBS broadcast service, and the identifier information of the service area corresponding to each MBS broadcast service. For example, the MCCH may include the MBS service identifier of at least one MBS broadcast service, and the service area corresponding to each MBS broadcast service; alternatively, the MCCH may include at least one service area, and the MBS broadcast service corresponding to each service area.

[0155] The identification information can be an index of a service area, and the indexes of each service area can be arranged in the order of the indication or configuration of each service area; the identification information can also be the identifier of a service area, and the identifier of each service area can be uniquely assigned to all service areas within a certain range (such as a serving cell); the identification information can also be related to the position or order of the service area in the indication information (such as the information element indicating the service area in the system message), that is, the service area may not have an actual corresponding index or identifier, but is implicitly determined according to its position or order in the indication information. For example, if the system message indicates x service areas in sequence, then for the i-th (1≤i≤x) service area, the identification information of the service area in the MCCH can be "i".

[0156] As an example, the MCCH is used to indicate at least one MBS broadcast service and the service area corresponding to each MBS broadcast service. For example, in a communication system with three MBS broadcast services: MBS1, MBS2, and MBS3, the MCCH can indicate the following: the service area corresponding to MBS1 is Area1, the service areas corresponding to MBS2 are Area2 and Area3, and the service area corresponding to MBS3 is Area3.

[0157] Specifically, the MCCH may include a list of MBS broadcast services, which indicates at least one MBS broadcast service and the service area corresponding to each MBS broadcast service. For example, the MBS broadcast service list may take the following form:

[0158] As an example, MCCH is used to indicate at least one service area and the MBS broadcast service corresponding to each service area. For example, there are three service areas in the communication system: Area1, Area2, and Area3. The indication information can indicate the following: the MBS broadcast service corresponding to Area1 is MBS1, the MBS broadcast service corresponding to Area2 is MBS2, and the MBS broadcast services corresponding to Area3 are MBS2 and MBS3.

[0159] Specifically, the MCCH may include a list of service areas, which indicates at least one service area and the corresponding MBS broadcast service for each service area. For example, the list of service areas may take the following form:

[0160] In one embodiment, the method further includes:

[0161] Receive system messages, which are used to indicate the geographical location information of the business area.

[0162] For example, a new SIB can be introduced, containing a list of geographic location information for the service area. Based on this, the UE can determine its current location or whether it has entered or left the service area of ​​the MBS broadcast service, thereby determining whether to trigger the MII reporting process.

[0163] In one embodiment, the geographic location information includes at least one of the following:

[0164] The circular area includes: identification information and / or reference location information and / or radius of the business area.

[0165] The polygonal region includes: identification information of the business area and / or vertex location and / or longitude and / or latitude and / or boundary line location information and / or north-south indication.

[0166] In this embodiment, geographic location information can be used to indicate the actual area covered by the business area. Geographic location information may include information about circular areas, and / or polygonal areas, and / or other types of area information.

[0167] As an example, the business area can be a circular area, and the corresponding geographical location information of the area can include the identification information of the business area and / or reference location information and / or the radius of the circular area. The reference location information can be the location of the center of the circle or latitude and longitude coordinates, etc.

[0168] Taking a circular area as an example, the service area corresponding to the MBS broadcast service can also be called the Intended Service Area. The data structure of the Intended Service Area is as follows:

[0169] In this data structure, AreaId represents the identification information of the business area, ReferenceLocation represents the reference location information, and DistanceRadius represents the radius. It should be noted that the above data structure is illustrative, and this embodiment does not impose specific limitations on the naming and format of each piece of information.

[0170] For example, the ReferenceLocation field contains location information used as a reference location. The value of this field is the same as the ellipsoidal point defined in TS37.355

[0049] . The first (leftmost) bit of the first octet contains the most significant bit. The data structure of the ReferenceLocation information element is as follows:

[0171] --ASN1START

[0172] --TAG-REFERENCELOCATION-START

[0173] ReferenceLocation-r17::=OCTET STRING

[0174] --TAG-REFERENCELOCATION-STOP

[0175] --ASN1STOP

[0176] As an example, the business area can be a polygonal region, and the corresponding geographic location information of the region can include the shape of the polygonal region (e.g., the number of sides and / or the side length), the location of the vertices of the polygonal region, latitude and longitude, boundary line location information (e.g., the direction of the sides, the location or latitude and longitude coordinates of the endpoints or midpoints of each side), and / or north-south indication (e.g., whether it is located in the Southern Hemisphere or the Northern Hemisphere).

[0177] Taking a polygonal region as an example, the service area corresponding to the MBS broadcast service can also be called the Intended Service Area. The data structure of the Intended Service Area is as follows:

[0178] In this data structure, `Polygon` represents the business area, and a polygon can have 3 to 15 sides. `PolygonPoints` represents the position of the vertices of the polygon area. `latitudeSign` indicates north-south orientation, `degreesLatitude` represents longitude, and `degreesLongitude` represents latitude. It should be noted that the above data structure is illustrative, and this embodiment does not impose specific limitations on the naming and format of the various information items.

[0179] It should be noted that in the system message, each business area in the geographic location information may or may not have a unique corresponding index or identifier. It can be indicated sequentially by vertex position and / or longitude and / or latitude and / or boundary line position information and / or north-south indication, etc.

[0180] It should be noted that the identification information of a business area in the geographic location information can be an index of the business area, a business area identifier, or related to the position or order of information elements indicating the business area in the system message. Furthermore, for a given business area, the identification information of that business area in the geographic location information and the identification information of that business area in the MCCH can be in the same form or different forms. For example, if the identification information of a business area in the geographic location information is the index of that business area, the identification information of that business area in the MCCH can be the index of that business area, the business area identifier, or related to the position or order of information elements indicating the business area in the system message, etc.

[0181] In one embodiment, the service area includes one of the following:

[0182] The entire area of ​​an NTN cell;

[0183] A portion of an NTN cell;

[0184] The entire area of ​​multiple NTN cells;

[0185] A portion of each NTN cell in multiple NTN cells;

[0186] The entire area of ​​at least one NTN cell and a portion of the area of ​​at least one NTN cell.

[0187] Understandably, the service area of ​​an MBS broadcast service can include one or more geographical areas spanning the current serving cell and its overlapping neighboring cells.

[0188] The service area of ​​MBS broadcast service can be flexibly set according to actual conditions. As shown in Figure 2, the service area of ​​MBS broadcast service can be the entire area of ​​an NTN cell (as shown in the shaded area of ​​Case 1); it can be a part of an NTN cell (as shown in the shaded area of ​​Case 2); it can be the entire area of ​​multiple NTN cells (as shown in the shaded area of ​​Case 3); it can be a part of each NTN cell among multiple NTN cells (as shown in the shaded area of ​​Case 4); it can be the entire area of ​​at least one NTN cell and a part of at least one NTN cell (as shown in the shaded area of ​​Case 5 in Figure 4).

[0189] Figure 3 is a flowchart of a method for receiving MII according to an embodiment of this application. This embodiment is applicable to the case of MII reception. Specifically, the method for receiving MII can be executed by an MII receiving device, which can be implemented by software and / or hardware and integrated into a network device. It should be noted that details not described in detail in this embodiment can be found in any of the above embodiments.

[0190] As shown in Figure 3, the method specifically includes the following steps:

[0191] S210, Receive MBS Interest Indication MII reported by the user equipment.

[0192] Among them, the scenarios that support user equipment triggering the MII reporting process include: user equipment entering or leaving the service area corresponding to the MBS broadcast service.

[0193] In this embodiment, the MBS interest indicator can be used to indicate information related to MBS broadcast services that the UE is receiving or is interested in receiving. Scenarios that support the user equipment triggering the MII reporting process include: the UE entering or leaving the service area corresponding to the MBS broadcast service.

[0194] It should be noted that the MBS broadcast service mentioned here can be a single MBS broadcast service or multiple MBS broadcast services. Furthermore, multiple MBS broadcast services here include two or more MBS broadcast services. Further, an MBS broadcast service can be all MBS broadcast services, including all MBS broadcast services that the UE is interested in, all MBS broadcast services that the UE is currently receiving or is about to receive, and all MBS broadcast services in the MBS interest list. Further, an MBS broadcast service can be one MBS broadcast service among all MBS broadcast services, or multiple MBS broadcast services within all MBS broadcast services.

[0195] It should be noted that the service area corresponding to the MBS broadcast service here can be one service area or multiple service areas. The service area can include the area covered by the transmitting device under the NTN network connection, or the area within an NTN cell covered by the transmitting device under the NTN network connection. Within an NTN cell, there can be one or more service areas. In one embodiment, when a UE enters or leaves one or more service areas corresponding to an MBS broadcast service, it supports triggering the MBS Interest Indication (MII) reporting procedure, and the network device can receive the MII.

[0196] It is important to note that when a UE enters or leaves the service area corresponding to the MBS broadcast service, MII reporting can be triggered. Whether or not MII reporting is triggered can be determined based on the actual situation. In other words, when a UE enters or leaves the service area corresponding to the MBS broadcast service, MII reporting may or may not be triggered. The network device may or may not receive the MII.

[0197] In one embodiment, when a UE enters or leaves one or more service areas corresponding to an MBS broadcast service, it can trigger the MBS Interest Indication (MII) reporting process.

[0198] In an exemplary application scenario: Before a UE enters the service area of ​​an MBS broadcast service (such as MBS1), the MBS broadcast service it is receiving or is interested in receiving is another MBS broadcast service (such as MBS2). When entering the service area of ​​MBS1, the MBS broadcast service it is receiving or is interested in receiving changes to MBS1. In this case, the MII reporting process can be triggered, and the network device can promptly learn that the MBS broadcast service the UE is receiving or is interested in receiving is MBS2, thereby allocating sufficient network resources for MBS1 and avoiding MBS1 packet loss, terminal failure, or reception failure.

[0199] In another exemplary application scenario: A UE is receiving or is interested in receiving MBS broadcast services (such as MBS3) within a service area of ​​MBS broadcast services. When leaving the service area of ​​MBS3, the MBS broadcast service being received or being interested in becomes another MBS broadcast service (such as MBS4). MBS3 is no longer the MBS broadcast service that the UE is receiving or is interested in receiving. In this case, the MII reporting process can be triggered. The network device can promptly learn that the MBS broadcast service that the UE is receiving or is interested in receiving is MBS4, and thus allocate sufficient network resources for MBS4 to avoid MBS4 packet loss, terminal failure, or reception failure.

[0200] The MII receiving method in this embodiment treats the UE entering or leaving the service area corresponding to the MBS broadcast service as a scenario that can trigger the MBS Interest Indication MII reporting process. This ensures that the user equipment can report the MII in a timely manner during movement, enabling the network equipment to promptly obtain the latest MBS broadcast services that the user equipment is receiving or is interested in receiving. This allows for reasonable adjustment or optimization of network resources, thereby improving the reliability and service quality of the MBS broadcast service.

[0201] In one embodiment, the user equipment is in an RRC connected state.

[0202] In one embodiment, the user equipment has MBS capability.

[0203] In one embodiment, the MII is generated by the user equipment when it enters or leaves the service area corresponding to the MBS broadcast service, based on the current situation.

[0204] In one embodiment, the MII includes at least one of the following:

[0205] MBS frequency list, which is used to indicate the MBS frequency on which the user equipment is receiving or is interested in MBS broadcast services;

[0206] MBS non-serving cell information list, the MBS non-serving cell information list is used to indicate information on receiving MBS broadcast services in non-serving cells;

[0207] Priority information, which is used to indicate the relationship between the priority of MBS broadcast service and the priority of other services, including unicast service and MBS multicast service;

[0208] A service list, which indicates the MBS broadcast services that the user equipment is receiving or is interested in.

[0209] In one embodiment, the method further includes:

[0210] The radio bearer of the MBS broadcast service is adjusted according to the MII.

[0211] For example, according to MII, network devices can adjust radio bearers for MBS broadcast services that a UE is receiving or interested in. For instance, for MBS broadcast services that a UE is receiving or interested in, some radio bearers can be released or reserved for them. Similarly, for MBS broadcast services that a UE is receiving or interested in, and which have a higher priority than unicast and MBS multicast services, some radio bearers can be released or reserved for them. For MBS broadcast services that a UE is receiving or interested in, and which have a lower priority than unicast and MBS multicast services, the radio bearers can be either not released or reserved for them, or their corresponding radio bearers can be released. Based on this, it is possible to ensure that appropriate radio bearers are provided for MBS broadcast services, making full use of network resources.

[0212] In one embodiment, adjusting the radio bearer of the MBS broadcast service according to the MII includes at least one of the following:

[0213] If the MII contains priority information, and / or the priority information indicates that the priority of the MBS broadcast service is higher than the priority of other services, then one or more radio bearers are released;

[0214] If the MII does not contain priority information, and / or the priority information indicates that the priority of the MBS broadcast service is not higher than the priority of other services, then the radio bearer will not be released.

[0215] If the MII does not contain priority information, and / or the priority information, then restore or rebuild one or more previously released radio bearers;

[0216] The other services include unicast services and / or multicast services and / or broadcast services.

[0217] Taking a single radio bearer as an example, the process of releasing a radio bearer may include at least one of the following situations:

[0218] For unicast service radio bearers, if the network device decides to release the radio bearer, then both the network device and the user equipment release the radio bearer.

[0219] For the radio bearer of MBS multicast service, if the network device decides that the radio bearer needs to be released, the network device sends an instruction to release the radio bearer to the user equipment in the group. After receiving the instruction, the user equipment in the group releases the radio bearer. The network device releases the radio bearer only if all user equipment in the group releases the radio bearer.

[0220] For the radio bearer of MBS broadcast service, the network equipment decides whether to establish or release the radio bearer. During the establishment of the radio bearer, the user equipment can also decide whether to establish or release the radio bearer. For example, if the UE is interested in the MBS broadcast service, it will establish the radio bearer; if it is not interested in the MBS broadcast service, it will release the radio bearer.

[0221] For example, when the priority of the MBS broadcast service is higher than that of other services, one or more radio bearers can be released or suspended to provide available radio bearers for the MBS broadcast service; when the priority of the MBS broadcast service is not higher than that of other services, no operation to adjust the radio bearers can be performed (which can be understood as not releasing or suspending the radio bearers), or one or more previously released or suspended radio bearers can be restored, rebuilt, or reactivated.

[0222] For example, five radio bearers are established between the network device and the UE: RB1, RB2, RB3, RB4, and RB5. If the priority of the MBS broadcast service is higher than that of other services, one or more radio bearers can be released or suspended. For example, RB1 and RB2 can be released or suspended. If the MBS broadcast service requires it, RB6 and RB7 can be established. If the latest priority indicates that the priority of the MBS broadcast service is not higher than that of other services, the radio bearers do not need to be adjusted; that is, the five radio bearers RB1, RB2, RB3, RB4, and RB5 can remain. If the latest priority indicates that the priority of the MBS broadcast service is not higher than that of other services, one or more previously released or suspended radio bearers can be restored, rebuilt, or reactivated. Based on this, the adjustment of radio bearers can be determined according to the priority of the MBS broadcast service to improve the utilization of network resources.

[0223] In one embodiment, the wireless bearer includes: a unicast bearer, and / or a multicast MRB, and / or a broadcast MRB.

[0224] In one embodiment, the MBS broadcast service includes at least one of the following:

[0225] Serving MBS broadcast services within the community;

[0226] MBS broadcast services indicated in the service list included in MII;

[0227] MBS broadcast service in the service area entered by the user equipment;

[0228] The MBS broadcast service corresponding to the service area that the user equipment leaves.

[0229] In one embodiment, the scenarios supporting user equipment triggering the MII reporting process also include at least one of the following:

[0230] When a connection is successfully established and / or restored, when an MBS broadcast session begins or ends, when switching to a PCell that supports SIB21, when receiving a SCell via dedicated signaling in an SIB20, during a handover, when an RRC connection is re-established, when switching to a PCell that provides MII for a non-serving cell in SIB1, or when receiving MBS broadcast services in a non-serving cell begins or ends.

[0231] In one embodiment, the method further includes:

[0232] Send MCCH, which is used to indicate the service area corresponding to each MBS service.

[0233] In one embodiment, the MCCH includes an MBS service identifier corresponding to each MBS service, and identification information of the service area corresponding to each MBS service.

[0234] In one embodiment, the method further includes:

[0235] Send a system message, which is used to indicate the business area and its corresponding geographical location information.

[0236] In one embodiment, the geographic location information includes at least one of the following:

[0237] The circular area includes: identification information and / or reference location information and / or radius of the business area.

[0238] The polygonal region includes: identification information of the business area and / or vertex location and / or longitude and / or latitude and / or boundary line location information and / or north-south indication.

[0239] In one embodiment, the service area includes one of the following:

[0240] The entire area of ​​an NTN cell;

[0241] A portion of an NTN cell;

[0242] The entire area of ​​multiple NTN cells;

[0243] A portion of each NTN cell in multiple NTN cells;

[0244] The entire area of ​​at least one NTN cell and a portion of the area of ​​at least one NTN cell.

[0245] Figure 4 is a schematic diagram of a MII reporting device provided in an embodiment of this application. As shown in Figure 4, the MII reporting device provided in this embodiment includes:

[0246] The trigger module 310 is used to trigger the MBS Interest Indication (MII) reporting process when a user equipment enters or leaves the service area corresponding to the MBS broadcast service.

[0247] In one embodiment, the user equipment is in an RRC connected state.

[0248] In one embodiment, the user equipment has MBS capability.

[0249] In one embodiment, the apparatus further includes a generation module, configured to generate the MII based on the current situation when a user equipment enters or leaves the service area corresponding to the MBS broadcast service.

[0250] In one embodiment, the MII includes at least one of the following:

[0251] MBS frequency list, which is used to indicate the MBS frequency on which the user equipment is receiving or is interested in MBS broadcast services;

[0252] MBS non-serving cell information list, the MBS non-serving cell information list is used to indicate information on receiving MBS broadcast services in non-serving cells;

[0253] Priority information, which is used to indicate the relationship between the priority of MBS broadcast service and the priority of other services, including unicast service and MBS multicast service;

[0254] A service list, which indicates the MBS broadcast services that the user equipment is receiving or is interested in.

[0255] In one embodiment, the radio bearer of the MBS broadcast service is adjusted according to the MII.

[0256] In one embodiment, the radio bearer of the MBS broadcast service satisfies at least one of the following:

[0257] If the MII contains priority information, and / or the priority information indicates that the priority of the MBS broadcast service is higher than the priority of other services, then one or more radio bearers are released or suspended.

[0258] If the MII does not contain priority information, and / or the priority information indicates that the priority of the MBS broadcast service is not higher than the priority of other services, then there is no radio bearer or it is suspended.

[0259] If the MII does not contain priority information, and / or the priority information indicates that the priority of the MBS broadcast service is not higher than the priority of other services, then one or more previously released or suspended radio bearers are restored, rebuilt, or reactivated.

[0260] The other services include unicast services and / or multicast services and / or broadcast services.

[0261] In one embodiment, the radio bearer includes: a unicast bearer, and / or a multicast MRB, and / or a broadcast MRB.

[0262] In one embodiment, the MBS broadcast service includes at least one of the following:

[0263] Serving MBS broadcast services within the community;

[0264] MBS broadcast services indicated in the service list included in MII;

[0265] The MBS broadcast service corresponding to the service area entered by the user equipment;

[0266] The MBS broadcast service corresponding to the service area that the user equipment leaves.

[0267] In one embodiment, the scenarios supporting user equipment triggering the MII reporting process also include at least one of the following:

[0268] When a connection is successfully established and / or restored, when an MBS broadcast session begins or ends, when switching to a PCell that supports SIB21, when receiving an SCell via dedicated signaling in an SIB20, during handover, when an RRC connection is re-established, when switching to a PCell that provides a non-serving cell MII in SIB1, or when receiving MBS broadcast services in a non-serving cell.

[0269] In one embodiment, the device further includes:

[0270] The first receiving module is used to receive the MCCH, which is used to indicate the MBS service and its corresponding service area.

[0271] In one embodiment, the MCCH includes an MBS service identifier corresponding to each MBS service, and identification information of the service area corresponding to each MBS service.

[0272] In one embodiment, the device further includes:

[0273] The second receiving module is used to receive system messages, which are used to indicate the geographical location information of the business area.

[0274] In one embodiment, the geographic location information includes at least one of the following:

[0275] The circular area includes: identification information and / or reference location information and / or radius of the business area.

[0276] The polygonal region includes: identification information of the business area and / or vertex location and / or longitude and / or latitude and / or boundary line location information and / or north-south indication.

[0277] In one embodiment, the service area includes one of the following:

[0278] The entire area of ​​an NTN cell;

[0279] A portion of an NTN cell;

[0280] The entire area of ​​multiple NTN cells;

[0281] A portion of each NTN cell in multiple NTN cells;

[0282] The entire area of ​​at least one NTN cell and a portion of the area of ​​at least one NTN cell.

[0283] The MII reporting device provided in this application embodiment can be used to execute the MII reporting method provided in any of the above embodiments, and has corresponding functions and beneficial effects.

[0284] Figure 5 is a schematic diagram of the structure of an MII reporting device provided in an embodiment of this application. As shown in Figure 5, the MII reporting device provided in this embodiment includes:

[0285] Receiver module 410 is used to receive MBS interest indication MII reported by user equipment;

[0286] Scenarios that support user equipment triggering the MII reporting process include: user equipment entering or leaving the service area corresponding to the MBS broadcast service.

[0287] In one embodiment, the user equipment is in an RRC connected state.

[0288] In one embodiment, the user equipment has MBS capability.

[0289] In one embodiment, the MII is generated by the user equipment when it enters or leaves the service area corresponding to the MBS broadcast service, based on the current situation.

[0290] In one embodiment, the MII includes at least one of the following:

[0291] MBS frequency list, which is used to indicate the MBS frequency on which the user equipment is receiving or is interested in MBS broadcast services;

[0292] MBS non-serving cell information list, the MBS non-serving cell information list is used to indicate information on receiving MBS broadcast services in non-serving cells;

[0293] Priority information, which is used to indicate the relationship between the priority of MBS broadcast service and the priority of other services, including unicast service and MBS multicast service;

[0294] A service list, which indicates the MBS broadcast services that the user equipment is receiving or is interested in.

[0295] In one embodiment, the apparatus further includes an adjustment module for adjusting the radio bearer of the MBS broadcast service according to the MII.

[0296] In one embodiment, adjusting the radio bearer of the MBS broadcast service according to the MII includes at least one of the following:

[0297] If the MII contains priority information, and / or the priority information indicates that the priority of the MBS broadcast service is higher than the priority of other services, then one or more radio bearers are released;

[0298] If the MII does not contain priority information, and / or the priority information indicates that the priority of the MBS broadcast service is not higher than the priority of other services, then the radio bearer will not be released.

[0299] If the MII does not contain priority information, and / or the priority information, then restore or rebuild one or more previously released radio bearers;

[0300] The other services include unicast services and / or multicast services and / or broadcast services.

[0301] In one embodiment, the wireless bearer includes: a unicast bearer, and / or a multicast MRB, and / or a broadcast MRB.

[0302] In one embodiment, the MBS broadcast service includes at least one of the following:

[0303] Serving MBS broadcast services within the community;

[0304] MBS broadcast services indicated in the service list included in MII;

[0305] MBS broadcast service in the service area entered by the user equipment;

[0306] The MBS broadcast service corresponding to the service area that the user equipment leaves.

[0307] In one embodiment, the scenarios supporting user equipment triggering the MII reporting process also include at least one of the following:

[0308] When a connection is successfully established and / or restored, when an MBS broadcast session begins or ends, when switching to a PCell that supports SIB21, when receiving a SCell via dedicated signaling in an SIB20, during a handover, when an RRC connection is re-established, when switching to a PCell that provides MII for a non-serving cell in SIB1, or when receiving MBS broadcast services in a non-serving cell begins or ends.

[0309] In one embodiment, the apparatus further includes: a first transmitting module for transmitting an MCCH, the MCCH being used to indicate the service area corresponding to each MBS broadcast service.

[0310] In one embodiment, the MCCH includes an MBS service identifier corresponding to each MBS service, and identification information of the service area corresponding to each MBS broadcast service.

[0311] In one embodiment, the device further includes a second sending module for sending a system message, the system message being used to indicate a service area and its corresponding geographical location information.

[0312] In one embodiment, the geographic location information includes at least one of the following:

[0313] The circular area includes: identification information and / or reference location information and / or radius of the business area.

[0314] The polygonal region includes: identification information of the business area and / or vertex location and / or longitude and / or latitude and / or boundary line location information and / or north-south indication.

[0315] In one embodiment, the service area includes one of the following:

[0316] The entire area of ​​an NTN cell;

[0317] A portion of an NTN cell;

[0318] The entire area of ​​multiple NTN cells;

[0319] A portion of each NTN cell in multiple NTN cells;

[0320] The entire area of ​​at least one NTN cell and a portion of the area of ​​at least one NTN cell.

[0321] The MII reporting device provided in this application embodiment can be used to execute the MII reporting method provided in any of the above embodiments, and has corresponding functions and beneficial effects.

[0322] This application also provides a user equipment, including a processor and a memory, wherein the memory is configured to store a computer program, and when the computer program is executed by the processor, the processor enables the processor to implement the MII reporting method described above.

[0323] This application also provides a network device, including a processor and a memory, wherein the memory is configured to store a computer program, and when the computer program is executed by the processor, the processor implements the above-described MII reporting method.

[0324] This application also provides a computer-readable storage medium including a computer program that, when executed by a processor, causes the processor to implement the methods described in any embodiment.

[0325] In the above embodiments, implementation can be achieved, in whole or in part, through software, hardware, firmware, or any other combination. When implemented in software, it can be implemented, in whole or in part, as a computer program product. A computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the flow or function according to the embodiments of this application is generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, digital subscriber line) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that integrates one or more available media. The available medium can be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., digital video disc (DVD)), or a semiconductor medium (e.g., solid-state disk (SSD)).

[0326] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0327] The above are merely preferred embodiments of this application and do not limit the embodiments and protection scope of this application. Those skilled in the art should realize that any equivalent substitutions and obvious changes made using the description and illustrations of this application should be included within the protection scope of this application.

Claims

1. A method for reporting MII (Missing Information), characterized in that, The method is executed by a user equipment, and the method includes: When a user device enters or leaves the service area corresponding to the MBS broadcast service, it supports triggering the MBS Interest Indication (MII) reporting process.

2. The method according to claim 1, characterized in that, The user equipment is in RRC connected state.

3. The method according to claim 1, characterized in that, The user equipment has MBS capability.

4. The method according to claim 1, characterized in that, Also includes: When a user equipment enters or leaves the service area corresponding to the MBS broadcast service, the MII is generated according to the current situation.

5. The method according to claim 1, wherein the MII comprises at least one of the following: MBS frequency list, which is used to indicate the MBS frequency on which the user equipment is receiving or is interested in MBS broadcast services; MBS non-serving cell information list, the MBS non-serving information list is used to indicate information on receiving MBS broadcast services in non-serving cells; Priority information, which is used to indicate the relationship between the priority of MBS broadcast service and the priority of other services, including unicast service and MBS multicast service; A service list, which indicates the MBS broadcast services that the user equipment is receiving or is interested in.

6. The method according to claim 1, characterized in that, The radio bearer of the MBS broadcast service is adjusted according to the MII.

7. The method according to claim 6, characterized in that, The radio bearer of the MBS broadcast service satisfies at least one of the following: If the MII contains priority information, and / or the priority information indicates that the priority of the MBS broadcast service is higher than the priority of other services, then one or more radio bearers are released or suspended. If the MII does not contain priority information, and / or the priority information indicates that the priority of the MBS broadcast service is not higher than the priority of other services, then there is no radio bearer or it is suspended. If the MII does not contain priority information, and / or the priority information indicates that the priority of the MBS broadcast service is not higher than the priority of other services, then one or more previously released or suspended radio bearers are restored, rebuilt, or reactivated. The other services include unicast services and / or multicast services and / or broadcast services.

8. The method according to claim 6 or 7, characterized in that, The radio bearers include: unicast bearers, and / or multicast MRBs, and / or broadcast MRBs.

9. The method according to claim 1, characterized in that, The MBS broadcast service includes at least one of the following: Serving MBS broadcast services within the community; MBS broadcast services indicated in the service list included in MII; The MBS broadcast service corresponding to the service area entered by the user equipment; The MBS broadcast service corresponding to the service area that the user equipment leaves.

10. The method according to claim 1, characterized in that, Scenarios that support user equipment triggering the MII reporting process also include at least one of the following: When a connection is successfully established and / or restored, when an MBS broadcast session begins or ends, when switching to a PCell that supports SIB21, when receiving an SCell via dedicated signaling in an SIB20, during handover, when an RRC connection is re-established, when switching to a PCell that provides a non-serving cell MII in SIB1, or when receiving MBS broadcast services in a non-serving cell.

11. The method according to claim 1, characterized in that, Also includes: Receive MCCH, which is used to indicate MBS services and their corresponding service areas.

12. The method according to claim 11, characterized in that, The MCCH includes the MBS service identifier corresponding to each MBS service, and the identification information of the service area corresponding to each MBS service.

13. The method according to claim 1, characterized in that, Also includes: Receive system messages, which are used to indicate the geographical location information of the business area.

14. The method according to claim 13, characterized in that, The geographic location information includes at least one of the following: The circular area includes: identification information and / or reference location information and / or radius of the business area. The polygonal region includes: identification information of the business area and / or vertex location and / or longitude and / or latitude and / or boundary line location information and / or north-south indication.

15. The method according to claim 1, characterized in that, The business area includes one of the following: The entire area of ​​an NTN cell; A portion of an NTN cell; The entire area of ​​multiple NTN cells; A portion of each NTN cell in multiple NTN cells; The entire area of ​​at least one NTN cell and a portion of the area of ​​at least one NTN cell.

16. A method for receiving MII, characterized in that, The method is executed by a base station, and the method includes: Receive MBS Interest Indication MII reported by the user equipment; Scenarios that support user equipment triggering the MII reporting process include: user equipment entering or leaving the service area corresponding to the MBS broadcast service.

17. The method according to claim 16, characterized in that, The user equipment is in RRC connected state.

18. The method according to claim 16, characterized in that, The user equipment has MBS capability.

19. The method according to claim 16, characterized in that, The MII is generated by the user equipment when it enters or leaves the service area corresponding to the MBS broadcast service, based on the current situation.

20. The method of claim 16, wherein the MII comprises at least one of the following: MBS frequency list, which is used to indicate the MBS frequency on which the user equipment is receiving or is interested in MBS broadcast services; MBS non-serving cell information list, the MBS non-serving information list is used to indicate information on receiving MBS broadcast services in non-serving cells; Priority information, which is used to indicate the relationship between the priority of MBS broadcast service and the priority of other services, including unicast service and MBS multicast service; A service list, which indicates the MBS broadcast services that the user equipment is receiving or is interested in.

21. The method according to claim 16, characterized in that, Also includes: The radio bearer of the MBS broadcast service is adjusted according to the MII.

22. The method according to claim 21, characterized in that, Adjusting the radio bearer of the MBS broadcast service according to the MII includes at least one of the following: If the MII contains priority information, and / or the priority information indicates that the priority of the MBS broadcast service is higher than the priority of other services, then one or more radio bearers are released; If the MII does not contain priority information, and / or the priority information indicates that the priority of the MBS broadcast service is not higher than the priority of other services, then the radio bearer will not be released. If the MII does not contain priority information, and / or the priority information, then restore or rebuild one or more previously released radio bearers; The other services include unicast services and / or multicast services and / or broadcast services.

23. The method according to claim 22, characterized in that, The radio bearer includes: unicast bearer, and / or multicast MRB, and / or broadcast MRB.

24. The method according to claim 16, characterized in that, The MBS broadcast service includes at least one of the following: Serving MBS broadcast services within the community; MBS broadcast services indicated in the service list included in MII; MBS broadcast service in the service area entered by the user equipment; The MBS broadcast service corresponding to the service area that the user equipment leaves.

25. The method according to claim 16, characterized in that, Scenarios that support user equipment triggering the MII reporting process also include at least one of the following: When a connection is successfully established and / or restored, when an MBS broadcast session begins or ends, when switching to a PCell that supports SIB21, when receiving a SCell via dedicated signaling in an SIB20, during a handover, when an RRC connection is re-established, when switching to a PCell that provides MII for a non-serving cell in SIB1, or when receiving MBS broadcast services in a non-serving cell begins or ends.

26. The method according to claim 16, characterized in that, Also includes: Send MCCH, which is used to indicate the service area corresponding to each MBS service.

27. The method according to claim 26, characterized in that, The MCCH includes the MBS service identifier corresponding to each MBS service, and the identification information of the service area corresponding to each MBS service.

28. The method according to claim 16, characterized in that, Also includes: Send a system message, which is used to indicate the business area and its corresponding geographical location information.

29. The method according to claim 28, characterized in that, The geographic location information includes at least one of the following: The circular area includes: identification information and / or reference location information and / or radius of the business area. The polygonal region includes: identification information of the business area and / or vertex location and / or longitude and / or latitude and / or boundary line location information and / or north-south indication.

30. The method according to claim 16, characterized in that, The business area includes one of the following: The entire area of ​​an NTN cell; A portion of an NTN cell; The entire area of ​​multiple NTN cells; A portion of each NTN cell in multiple NTN cells; The entire area of ​​at least one NTN cell and a portion of the area of ​​at least one NTN cell.

31. A MII reporting device, characterized in that, include: The triggering module is used to trigger the MII reporting process when a user device enters or leaves the service area corresponding to the MBS broadcast service.

32. A receiving device for MII, characterized in that, include: The receiving module is used to receive MIIs reported by user equipment; Scenarios that support user equipment triggering the MII reporting process include: user equipment entering or leaving the service area corresponding to the MBS broadcast service.

33. A user equipment, comprising a processor and a memory, characterized in that, The memory is configured to store a computer program, which, when executed by the processor, causes the processor to implement the MII reporting method as described in any one of claims 1-15.

34. A network device, comprising a processor and a memory, characterized in that, The memory is configured to store a computer program, which, when executed by the processor, causes the processor to implement the MII receiving method as described in any one of claims 16-30.

35. A computer-readable storage medium comprising a computer program, characterized in that, When the computer program is executed by a processor, it causes the processor to implement the method as described in any one of claims 1-30.

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