Group calling method and system in trunking communication

Abstract

The embodiment of the invention provides a group calling method and system in trunking communication, applied to a core network, and comprising: determining a target paging group, the target paging group comprising N terminal devices, N being an integer greater than or equal to 1; m access devices are determined based on the network location areas of the N terminal devices, M is an integer greater than or equal to 1, and the M access devices can cover the network location areas of all the terminal devices of the target paging group; and sending a group call message to each access device to enable the access device to execute a group call operation on the target paging group. According to the invention, the problem that beam selection cannot be carried out under the condition that the base station moves in the prior art is solved, and the effect of carrying out group calling on the terminal through the beam selected by the mobile base station is further achieved.

Description

Technical Field

[0001] The embodiments of the present invention relate to the field of cluster communication, and in particular, to a group calling method and system in cluster communication. Background Art

[0002] In the 4G-based cluster system, downlink point-to-multipoint transmission only supports single-beam transmission and does not support base station mobility. Multi-beam transmission is an important technical feature of the air interface of the 5G wireless communication system. On the one hand, the original 4G-based cluster system only supports single-beam transmission, which makes the cluster system unable to fully utilize the 5G system capabilities. Since 5G introduces multi-beam characteristics, the multi-beam system needs to solve the beam selection problem. In addition, since 5G base stations can be deployed on the ground or on floating platforms in the air, the 5G base stations deployed in the air are not stationary to the ground, so the beam selection problem when the base station is moving also needs to be solved.

[0003] There is currently no effective solution to the above problems. Summary of the invention

[0004] The embodiment of the present invention provides a group call method and system in trunking communication, so as to at least solve the problem in the related art that beam selection cannot be performed when the base station moves.

[0005] According to one embodiment of the present invention, there is provided a group paging method in cluster communication, which is applied to a core network and includes: determining a target paging group, wherein the target paging group includes N terminal devices, and N is an integer greater than or equal to 1; determining M access devices based on the network location areas of the N terminal devices, wherein M is an integer greater than or equal to 1, and the M access devices can cover the network location areas of all the terminal devices of the target paging group; and sending a group paging message to each of the access devices so that the access device performs a group paging operation on the target paging group.

[0006] In an exemplary embodiment, before determining the M access devices based on the network location areas of the N terminal devices, the method further includes: receiving the network location area reported by the terminal device; or, receiving a first geographic location reported by the terminal device, and determining the network location area of ​​the terminal device based on the first geographic location.

[0007] In an exemplary embodiment, determining the network location area of ​​the terminal device based on the first geographical location includes: determining the network location area corresponding to the first geographical location in a first correspondence, wherein the first correspondence includes a correspondence between a geographical area and a network location area, and the core network stores the first correspondence.

[0008] In an exemplary embodiment, M access devices are determined based on the network location areas of N terminal devices, including: determining the access devices covering the network location area in a second correspondence, wherein the second correspondence includes a correspondence between each access device and the network location area it covers, the core network stores the second correspondence, the access devices are movable, and the second correspondence is updated as the network location area covered by the access devices changes.

[0009] In an exemplary embodiment, sending a group call message to each of the access devices includes: sending the group call message to a target access device, wherein the target access device is any one of the M access devices, and the group call message carries a network location area set, and the network location area set is the union of the network location areas of all the terminal devices in the target paging group, or the network location area set is the union of the network location areas of the terminal devices covered by the target access device.

[0010] In an exemplary embodiment, the access device transmits multiple beams, at least one of the multiple beams covers the network location area, so that the access device selects a target beam from the multiple beams it transmits to perform the group call operation to the network location area covered by it.

[0011] In an exemplary embodiment, the network location area is a tracking area.

[0012] In an exemplary embodiment, the access device is a base station, which is deployed on an aerial mobile platform and moves along with the movement of the aerial mobile platform.

[0013] According to another embodiment of the present invention, a group call method in cluster communication is provided, which is applied to an access device, comprising: receiving a group call message sent by a core network, wherein the group call message carries a network location area set; determining a target beam covering a network location area in the network location area set based on a third correspondence between a transmitted beam and the network location area it covers, and obtaining a target beam set, wherein the access device saves the third correspondence; and performing a group call operation on at least one terminal device through the target beam set.

[0014] In an exemplary embodiment, based on a third correspondence between a transmitted beam and the network location area it covers, a target beam covering a network location area in the network location area set is determined to obtain a target beam set, including: determining a target tracking area covered by the access device in the network location area set; determining a beam in the third correspondence that has the correspondence with the target tracking area as a target beam to obtain the target beam set.

[0015] In an exemplary embodiment, before determining the target beam covering the network location area in the network location area set based on the third correspondence between the transmitted beam and the network location area covered by it, and obtaining the target beam set, the method also includes: determining the second geographical location of the access device; determining the target geographical area covered by each of the beams based on the second geographical location and the direction of each of the transmitted beams; establishing the third correspondence based on the target geographical area covered by each of the beams and the first correspondence, wherein the first correspondence includes a correspondence between a geographical area and a network location area, and the access device saves the first correspondence.

[0016] In an exemplary embodiment, the third correspondence is established based on the target geographical area covered by each of the beams and the first correspondence, including: determining the target network location area corresponding to the target geographical area in the first correspondence; establishing a correspondence between the beam covering the target geographical area and the target network location area to obtain the third correspondence.

[0017] In an exemplary embodiment, the access device is movable, and the network location area covered by the beam emitted by the access device changes as the access device moves, and the third corresponding relationship is updated as the network location area covered by the beam changes.

[0018] In an exemplary embodiment, performing a group call operation on at least one terminal device through the target beam set includes: scheduling transmission resources for each of the target beams so that the target beam sends a paging message to the terminal devices within the network location area covered by the target beam.

[0019] In an exemplary embodiment, the network location area is a tracking area.

[0020] In an exemplary embodiment, the access device is a base station, which is deployed on an aerial mobile platform and moves along with the movement of the aerial mobile platform.

[0021] According to another embodiment of the present invention, a group call method in cluster communication is provided, which is applied to a terminal device, including: determining the geographical location of the terminal device, and reporting the geographical location to a core network; or determining the geographical location of the terminal device, determining a network location area of ​​the terminal device based on the geographical location, and reporting the network location area to the core network.

[0022] In an exemplary embodiment, determining the network location area of ​​the terminal device based on the geographical location includes: determining the network location area corresponding to the geographical location in a first correspondence, wherein the first correspondence includes a correspondence between a geographical area and a network location area, and the terminal device saves the first correspondence.

[0023] In an exemplary embodiment, the method further includes: receiving a configuration message from the core network, wherein the configuration message includes reporting condition configuration information.

[0024] According to another embodiment of the present invention, a group call system in cluster communication is provided, comprising: the above-mentioned core network, access equipment, and terminal equipment.

[0025] According to yet another embodiment of the present invention, a computer-readable storage medium is provided, wherein a computer program is stored in the computer-readable storage medium, wherein the computer program implements the steps of any of the above methods when executed by a processor.

[0026] According to yet another embodiment of the present invention, there is provided an electronic device, including a memory and a processor, wherein the memory stores a computer program, and the processor is configured to run the computer program to execute the steps in any one of the above method embodiments.

[0027] According to yet another embodiment of the present invention, a computer program product is provided, comprising a computer program, wherein when the computer program is executed by a processor, the steps of any of the above methods are implemented.

[0028] According to yet another embodiment of the present invention, a computer program product is provided, comprising computer instructions, wherein when the computer instructions are executed by a processor, the steps of any of the above methods are implemented.

[0029] Through the present invention, since the core network determines the target paging group, the target paging group includes N terminal devices, N is an integer greater than or equal to 1; based on the network location area of ​​the N terminal devices, M access devices are determined, M is an integer greater than or equal to 1, and the M access devices can cover the network location area of ​​all terminal devices of the target paging group; a group paging message is sent to each access device so that the access device performs a group paging operation on the target paging group. Therefore, the problem that beam selection cannot be performed when the base station moves in the related art can be solved, and the effect of performing group paging on the terminal through the beam selected by the mobile base station can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is a schematic diagram of a non-terrestrial network according to an embodiment of the present invention;

[0031] Figure 2 is a flow chart of a group calling method according to an embodiment of the present invention;

[0032] Figure 3 is a schematic diagram of a group call according to an embodiment of the present invention;

[0033] Figure 4 is a step diagram according to an embodiment of the present invention. DETAILED DESCRIPTION

[0034] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings and in combination with the embodiments.

[0035] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0036] Figure 1 is a schematic diagram of a non-ground network according to an embodiment of the present invention, such as Figure 1 As shown, the non-terrestrial network includes satellite-borne base stations, terminal equipment, gateway stations and core networks. The satellite-borne base station is a base station deployed on an aerial mobile platform, for example, deployed on a satellite, and the satellite on which the base station is deployed can be a low-orbit satellite, a medium-orbit satellite or a high-orbit satellite.

[0037] In this embodiment, a group call method running in the above-mentioned non-terrestrial network trunking communication is provided, which is applied to the core network. Figure 2 is a flow chart of a group call method in cluster communication according to an embodiment of the present invention. Figure 2 As shown, the process includes the following steps:

[0038] Step S202, determining a target paging group, wherein the target paging group includes N terminal devices, where N is an integer greater than or equal to 1;

[0039] Among them, the terminal devices included in the target paging group are the terminal devices to be paged.

[0040] Step S204, determining M access devices based on the network location areas of the N terminal devices, wherein M is an integer greater than or equal to 1, and the M access devices can cover the network location areas of all the terminal devices of the target paging group;

[0041] The network location area is a tracking area. The access device is a base station, which is deployed on an aerial mobile platform and moves with the movement of the aerial mobile platform. For example, it can be a satellite-borne base station (a base station deployed on a satellite).

[0042] The access device transmits multiple beams, at least one of which covers any one or more network location areas of N terminal devices, so that the access device selects a target beam from the multiple beams it transmits to perform the group call operation on the network location area covered by it.

[0043] For example, determining M access devices based on the network location areas of N terminal devices includes: determining the access devices covering the network location area in a second correspondence, wherein the second correspondence includes the correspondence between each access device and the network location area covered by it, the core network stores the second correspondence, the access device is movable, and the second correspondence is updated as the network location area covered by the access device changes.

[0044] Step S206: Send a group paging message to each of the access devices, so that the access device performs a group paging operation on the target paging group.

[0045] For example, taking the sending of the group call message to the target access device (the target access device is any one of the M access devices), the group call message carries a network location area set, which is the union of the network location areas of all the terminal devices in the target paging group, or the network location area set is the union of the network location areas of the terminal devices covered by the target access device.

[0046] In an exemplary embodiment, before determining the M access devices based on the network location areas of the N terminal devices, the method further includes:

[0047] Receive the network location area reported by the terminal device; or receive the first geographical location reported by the terminal device, and determine the network location area of ​​the terminal device based on the first geographical location. Specifically, determine the network location area corresponding to the first geographical location in a first corresponding relationship, wherein the first corresponding relationship includes a corresponding relationship between a geographical area and a network location area, and the core network stores the first corresponding relationship.

[0048] The core network can determine the tracking area where each terminal is located according to the geographical location reported by each terminal; the core network composes the tracking area where each terminal device is located into a tracking area list.

[0049] The TA area is mapped to the geographical area to obtain the first corresponding relationship, the core network saves the first corresponding relationship, and determines the base station serving each tracking area in the tracking area list based on the first corresponding relationship. The core network sends the TA list to each base station.

[0050] The above-mentioned tracking area is a specific area covered by the satellite in space, also known as the coverage area. The above-mentioned tracking area includes the geographical location of the terminal and the surrounding range. The satellite will regularly update the information of this area to ensure that the base station and the terminal can maintain communication connection within the tracking area. The above-mentioned tracking area (Track Area, referred to as TA) list is in the process of establishing a group call. The core network generates a tracking area list (referred to as TA area list) for the entire group call based on the terminal devices in the target paging group (the target paging group includes the information of the terminal devices to be group called) and combined with the real-time tracking area information of each terminal device during the group call establishment process, ensuring that the TA area list includes the tracking area of ​​each terminal device to be paged.

[0051] The location reported by each of the above terminals is the geographical location of the terminal. The above terminals themselves have the function of location update reporting. Therefore, the above terminals can be configured to report terminal location information periodically through the core network, or can be configured to report terminal location information based on location change.

[0052] In an exemplary embodiment, when the number of access devices serving the tracking areas in the tracking area list is M, the core network sends the tracking area list to each of the M access devices respectively.

[0053] Among them, one access device can cover one TA area or multiple TA areas, and one TA area can be covered by one access device or multiple access devices. For example, when the group call TA area is too large to be completely covered by one access device, the cluster core network will send the group call establishment message to multiple access devices that can provide downlink point-to-multipoint transmission for the TA area.

[0054] During the process of establishing a group call, the core network sends the TA list of the group call area to the access device, and the access device determines the target TA area for the group call downlink point-to-multipoint transmission according to the core network TA list. Figure 3 is a schematic diagram of a group call according to an embodiment of the present invention, such as Figure 3 As shown, TA1 and TA2 are the above-mentioned tracking areas. Beam 1 and Beam 2 transmitted by the base station (left) cover TA1, and Beam 5 and Beam 6 transmitted by the base station (right) cover TA2. Therefore, the above-mentioned core network sends TA1 and TA2 to the above-mentioned left and right base stations respectively.

[0055] Through the above steps, since the core network determines the target paging group, the target paging group includes N terminal devices, N is an integer greater than or equal to 1; based on the network location area of ​​the N terminal devices, M access devices are determined, M is an integer greater than or equal to 1, and the M access devices can cover the network location area of ​​all terminal devices of the target paging group; a group paging message is sent to each access device so that the access device performs a group paging operation on the target paging group. Therefore, the problem that beam selection cannot be performed when the base station moves in the related art can be solved, and the effect of performing group paging on the terminal through the beam selected by the mobile base station can be achieved.

[0056] According to another embodiment of the present invention, a group call method in cluster communication is provided, which is applied to an access device, wherein the access device is a base station, and the base station is deployed on an aerial mobile platform, and the base station moves with the movement of the aerial mobile platform. For example, the access device may be a satellite-borne base station deployed on a satellite. The satellite on which the base station is deployed may be a low-orbit satellite, a medium-orbit satellite, or a high-orbit satellite. The core network may determine the base station serving each tracking area based on the ephemeris table, and the ephemeris table records, including but not limited to: the moving trajectory of the satellite, the position of the satellite, a table or chart of the satellite movement, etc. The following steps are included:

[0057] Step S302, receiving a group call message sent by a core network, wherein the group call message carries a network location area set;

[0058] The network location area set is the union of the network location areas of all the terminal devices in the target paging group, or the network location area set is the union of the network location areas of the terminal devices covered by the target access device. The target paging group includes N terminal devices, where N is an integer greater than or equal to 1.

[0059] The above network location area is a tracking area. The above group paging message carries a network location area set, which may be the union of the network location areas of all the terminal devices in the target paging group in the above embodiment, or the network location area set may also be the union of the network location areas of the terminal devices covered by the access device.

[0060] Step S304, determining a target beam covering a network location area in the network location area set based on a third correspondence between the transmitted beam and the network location area covered by the beam, and obtaining a target beam set, wherein the access device stores the third correspondence;

[0061] Specifically, a target tracking area covered by the access device is determined in a network location area of ​​at least one terminal device included in the group call message; a beam having the corresponding relationship with the target tracking area in the third corresponding relationship is determined as a target beam to obtain a target beam set.

[0062] Step S306: Perform a group call operation on at least one terminal device through the target beam set.

[0063] Specifically, transmission resources are scheduled for each of the target beams so that the target beam sends a paging message to a terminal device within the network location area covered by the target beam.

[0064] In an exemplary embodiment, before determining the target beam covering the network location area in the network location area set based on the third correspondence between the transmitted beam and the network location area covered by it, and obtaining the target beam set, the method also includes: determining the second geographical location of the access device; determining the target geographical area covered by each of the beams based on the second geographical location and the direction of each of the transmitted beams; establishing the third correspondence based on the target geographical area covered by each of the beams and the first correspondence, wherein the first correspondence includes a correspondence between a geographical area and a network location area, and the access device saves the first correspondence.

[0065] Specifically, establishing the third corresponding relationship based on the target geographical area covered by each of the beams and the first corresponding relationship includes:

[0066] In the first corresponding relationship, a target network location area corresponding to the target geographical area is determined; and a corresponding relationship between the beam covering the target geographical area and the target network location area is established to obtain a third corresponding relationship.

[0067] The base station saves the first correspondence between the TA area and the geographical area in advance, and determines the target network location area (referred to as the target TA area) that the base station can serve according to its own location (second geographical location). The base station searches for the corresponding network location area in the first correspondence according to the geographical area covered by the beam it transmits, establishes the correspondence between the beam and the network location area, and obtains the third correspondence.

[0068] In an exemplary embodiment, the access device is movable, and the network location area covered by the beam emitted by the access device changes as the access device moves, and the third corresponding relationship is updated as the network location area covered by the beam changes.

[0069] In this cluster system, there is a correspondence between the TA area and the geographical area (the first correspondence). The base station saves the first correspondence between the TA area and the geographical area in advance, and determines the TA area that the base station can serve based on its own location information. Since the base station itself may move with the aerial platform, the correspondence between the base station transmission beam and the TA area will change. The base station can estimate the coverage of the beam on the ground based on its own location and the direction of the base station transmission beam, and then determine the correspondence between the TA area and the base station transmission beam.

[0070] by Figure 3 For example, beam 1 and beam 2 transmitted by the base station (left) correspond to TA1, beam 3 and beam 4 transmitted by the base station (left) correspond to TA2, beam 5 and beam 6 transmitted by the base station (right) correspond to TA3, and beam 7 and beam 8 transmitted by the base station (right) correspond to TA4.

[0071] Specifically, the base station determines the target tracking area served by the base station in the tracking area list; the base station determines the target beam set in the beam transmitted by the base station according to the correspondence between the target tracking area and the beam transmitted by the base station.

[0072] by Figure 3 For example, the group call TA area list sent by the core network to the base station includes TA1 and TA3. The base station determines through calculation that they correspond to beams 1, 2 and beams 5, 6 respectively. Therefore, the base station only needs to schedule the target beams 1, 2, 5, 6 to form the target beam set transmission resources for group call downlink point-to-multipoint transmission.

[0073] According to another embodiment of the present invention, a group call method in cluster communication is provided, which is applied to a terminal device and includes the following steps: determining the geographical location of the terminal device and reporting the geographical location to a core network; or determining the geographical location of the terminal device, determining a network location area of ​​the terminal device based on the geographical location, and reporting the network location area to the core network.

[0074] In an exemplary embodiment, the terminal device reports the geographical location to the core network, and the core network determines the network location area corresponding to the geographical location based on the first corresponding relationship. Alternatively, the terminal device may also store the above-mentioned first corresponding relationship, and the terminal device determines the network location area of ​​the terminal device according to its own geographical location and the first corresponding relationship.

[0075] Specifically, the terminal device may determine the network location area in the following manner: determine the network location area corresponding to the geographical location in a first corresponding relationship, wherein the first corresponding relationship includes a corresponding relationship between a geographical area and a network location area, and the terminal device saves the first corresponding relationship.

[0076] In an exemplary embodiment, the method further includes: receiving a configuration message from the core network, wherein the configuration message includes reporting condition configuration information.

[0077] The reporting condition configuration information is used to indicate the conditions for the terminal device to report the geographical location or the network location area of ​​the terminal device, including but not limited to:

[0078] Reporting the geographical location to the core network every first preset period; or, when the geographical location of the terminal device changes, reporting the changed geographical location of the terminal device to the core network.

[0079] Report the network location area to the core network every second preset period; or, when the network location area of ​​the terminal device changes, report the changed network location area of ​​the terminal device to the core network.

[0080] According to another embodiment of the present invention, a group call system in cluster communication is provided, comprising: the above-mentioned core network, access equipment, and terminal equipment.

[0081] Figure 4 is a step diagram according to an embodiment of the present invention, such as Figure 4 As shown, this step includes the following:

[0082] S401, the base station determines a correspondence (first correspondence) between a geographical area covered by a beam transmitted by the base station and a tracking area (TA area);

[0083] S402, set the trigger conditions and reporting method for the cluster terminal (terminal device of the target paging group) to report the geographic location, the trigger conditions for reporting the geographic location include periodic reporting or reporting when the geographic location changes, and the reporting method can adopt the geographic location reporting method in the prior art; or, set the trigger conditions and reporting method for the cluster terminal to report the tracking area, the trigger conditions for reporting the tracking area include periodic reporting or reporting when the tracking area changes, and the reporting method can adopt the reporting method in the prior art.

[0084] S403, the cluster core network saves the cluster terminal TA tracking area;

[0085] S404, during the cluster group call service, the cluster core network sends a cluster terminal group TA area list of the cluster terminal to each base station;

[0086] S405: The base station determines a target beam for downlink point-to-multipoint transmission according to the correspondence between the geographical area covered by the beam and the TA area, and pages the cluster terminal through the target beam.

[0087] In the data transmission of the cluster group call service of the present application, the method of selecting the group call beam by the base station fills the gap in the prior art, can effectively improve the spectrum utilization rate of the system and the efficiency of the base station transmission power, and further expand the group call capacity of the wide-base cluster system in the multi-beam wireless communication system. The problem that the beam selection cannot be performed when the base station moves in the related technology is solved, and the effect of performing group calls on the terminal through the beam selected by the mobile base station is achieved.

[0088] Optionally, the executor of the above steps may be a background processor, or other devices with similar processing capabilities, or a machine that integrates at least an image acquisition device and a data processing device, wherein the image acquisition device may include a graphics acquisition module such as a camera, and the data processing device may include a computer, a mobile phone or other terminal, but is not limited thereto.

[0089] Through the description of the above implementation methods, those skilled in the art can clearly understand that the method according to the above embodiment can be implemented by means of software plus a necessary general hardware platform, and of course can also be implemented by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present invention, or the part that contributes to the prior art, can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk), and includes a number of instructions for enabling a terminal device (which can be a mobile phone, computer, server, or network device, etc.) to execute the methods described in each embodiment of the present invention.

[0090] In this embodiment, a group call system is also provided, including the core network, access device and terminal device in the above embodiment, and the system is used to implement the above embodiment and preferred implementation mode, and the descriptions have been made no further. As used below, the term "module" can implement a combination of software and / or hardware of a predetermined function. Although the device described in the following embodiments is preferably implemented in software, the implementation of hardware, or a combination of software and hardware is also possible and conceivable.

[0091] It should be noted that the above-mentioned systems can be implemented by software or hardware. For the latter, it can be implemented in the following ways, but not limited to: the above-mentioned systems are all located in the same processor; or, the above-mentioned systems are located in different processors in any combination.

[0092] An embodiment of the present invention further provides a computer-readable storage medium, in which a computer program is stored. When the computer program is executed by a processor, the steps of any of the above methods are implemented.

[0093] In an exemplary embodiment, the computer-readable storage medium may include, but is not limited to, various media that can store computer programs, such as a USB flash drive, a read-only memory (ROM), a random access memory (RAM), a mobile hard disk, a magnetic disk or an optical disk.

[0094] An embodiment of the present invention further provides an electronic device, including a memory and a processor, wherein a computer program is stored in the memory, and the processor is configured to run the computer program to execute the steps in any one of the above method embodiments.

[0095] In an exemplary embodiment, the electronic device may further include a transmission device and an input / output device, wherein the transmission device is connected to the processor, and the input / output device is connected to the processor.

[0096] For specific examples in this embodiment, reference may be made to the examples described in the above embodiments and exemplary implementation modes, and this embodiment will not be described in detail herein.

[0097] An embodiment of the present invention further provides a computer program product, including a computer program, which implements the steps of the method described in each embodiment of the present application when executed by a processor.

[0098] Obviously, those skilled in the art should understand that the above modules or steps of the present invention can be implemented by a general computing device, they can be concentrated on a single computing device, or distributed on a network composed of multiple computing devices, they can be implemented by a program code executable by a computing device, so that they can be stored in a storage device and executed by the computing device, and in some cases, the steps shown or described can be executed in a different order than here, or they can be made into individual integrated circuit modules, or multiple modules or steps therein can be made into a single integrated circuit module for implementation. Thus, the present invention is not limited to any specific combination of hardware and software.

[0099] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A group calling method in cluster communication, characterized in that: Applied to core network, including: Determine a target paging group, wherein the target paging group includes N terminal devices, where N is an integer greater than or equal to 1; Determine M access devices based on the network location areas of the N terminal devices, where M is an integer greater than or equal to 1, and the M access devices can cover the network location areas of all the terminal devices of the target paging group; A group paging message is sent to each of the access devices, so that the access device performs a group paging operation on the target paging group.

2. The method according to claim 1, characterized in that Before determining the M access devices based on the network location areas of the N terminal devices, the method further includes: receiving the network location area reported by the terminal device; or, Receive a first geographic location reported by the terminal device, and determine a network location area of ​​the terminal device based on the first geographic location.

3. The method according to claim 2, characterized in that Determining a network location area of ​​the terminal device based on the first geographical location includes: The network location area corresponding to the first geographical location is determined in a first corresponding relationship, wherein the first corresponding relationship includes a corresponding relationship between a geographical area and a network location area, and the core network stores the first corresponding relationship.

4. The method according to claim 1, characterized in that: Determining M access devices based on the network location areas of N terminal devices includes: The access device covering the network location area is determined in a second correspondence, wherein the second correspondence includes a correspondence between each access device and the network location area it covers, the core network stores the second correspondence, the access device is movable, and the second correspondence is updated as the network location area covered by the access device changes.

5. The method according to claim 1, characterized in that: Sending a group call message to each of the access devices includes: The group call message is sent to a target access device, wherein the target access device is any one of the M access devices, and the group call message carries a network location area set, which is the union of the network location areas of all the terminal devices in the target paging group, or the network location area set is the union of the network location areas of the terminal devices covered by the target access device.

6. The method according to any one of claims 1 to 5, characterized in that The access device transmits a plurality of beams, at least one of the plurality of beams covering the network location area, so that the access device selects a target beam from the plurality of beams transmitted by the access device to perform the group call operation to the network location area covered by the target beam.

7. The method according to any one of claims 1 to 5, characterized in that The network location area is a tracking area.

8. The method according to any one of claims 1 to 5, characterized in that The access device is a base station, which is deployed on an aerial mobile platform and moves along with the movement of the aerial mobile platform.

9. A group calling method in cluster communication, characterized in that: Applicable to access devices, including: Receiving a group call message sent by a core network, wherein the group call message carries a network location area set; Based on a third correspondence between the transmitted beam and the network location area covered by it, determining a target beam covering the network location area in the network location area set to obtain a target beam set, wherein the access device stores the third correspondence; Performing a group call operation on at least one terminal device through the target beam set; Among them, the core network is used to determine M access devices based on the network location areas of N terminal devices included in the target paging group, N is an integer greater than or equal to 1, M is an integer greater than or equal to 1, and the M access devices can cover the network location areas of all the terminal devices of the target paging group; the core network sends a group paging message to each of the access devices so that the access device performs a group paging operation on the target paging group.

10. The method according to claim 9, characterized in that Determining a target beam covering a network location area in the network location area set based on a third correspondence between the transmitted beam and the network location area covered by the beam, and obtaining a target beam set, including: Determining a target tracking area covered by the access device in the network location area set; The beam having the corresponding relationship with the target tracking area in the third corresponding relationship is determined as the target beam to obtain the target beam set.

11. The method according to claim 9, characterized in that Before determining a target beam covering a network location area in the network location area set based on a third correspondence between the transmitted beam and the network location area covered by the beam, and obtaining the target beam set, the method further includes: determining a second geographical location of the access device; Determining a target geographical area covered by each of the beams according to the second geographical location and the direction of each of the transmitted beams; The third correspondence is established based on the target geographical area covered by each of the beams and the first correspondence, wherein the first correspondence includes a correspondence between a geographical area and a network location area, and the access device stores the first correspondence.

12. The method according to claim 11, characterized in that Establishing the third corresponding relationship based on the target geographical area covered by each of the beams and the first corresponding relationship includes: Determining a target network location area corresponding to the target geographic area in the first corresponding relationship; A correspondence relationship between the beam covering the target geographical area and the target network location area is established to obtain the third correspondence relationship.

13. The method according to any one of claims 9 to 12, characterized in that The access device is movable, and the network location area covered by the beam emitted by the access device changes with the movement of the access device, and the third corresponding relationship is updated with the change of the network location area covered by the beam.

14. The method according to claim 9, characterized in that Performing a group call operation on at least one terminal device by using the target beam set includes: Schedule transmission resources for each of the target beams so that the target beam sends paging messages to terminal devices within the network location area covered by the target beam.

15. The method according to claim 9, characterized in that The network location area is a tracking area.

16. The method according to claim 9, characterized in that The access device is a base station, which is deployed on an aerial mobile platform and moves along with the movement of the aerial mobile platform.

17. A group calling method in cluster communication, characterized in that: Applied to terminal equipment, including: Determine the geographical location of the terminal device, and report the geographical location to the core network; or, Determine the geographical location of the terminal device, determine the network location area of ​​the terminal device based on the geographical location, and report the network location area to the core network; The core network is used to determine M access devices based on the network location areas of the N terminal devices included in the target paging group, where N is an integer greater than or equal to 1, and M is an integer greater than or equal to 1, and the M access devices can cover the network location areas of all the terminal devices of the target paging group; the core network sends a group paging message to each of the access devices so that the access device performs a group paging operation on the target paging group.

18. The method according to claim 17, characterized in that Determining a network location area of ​​the terminal device based on the geographical location includes: The network location area corresponding to the geographical location is determined in a first corresponding relationship, wherein the first corresponding relationship includes a corresponding relationship between a geographical area and a network location area, and the terminal device stores the first corresponding relationship.

19. The method according to claim 17, characterized in that The method further comprises: A configuration message from the core network is received, wherein the configuration message includes reporting condition configuration information.

20. A group call system in cluster communication, characterized in that: include: A core network, configured to determine a target paging group, wherein the target paging group includes N terminal devices, N is an integer greater than or equal to 1; determine M access devices based on the network location areas of the N terminal devices, wherein M is an integer greater than or equal to 1, and the M access devices can cover the network location areas of all the terminal devices of the target paging group; send a group paging message to each of the access devices, so that the access device performs a group paging operation on the target paging group; An access device, configured to receive a group call message sent by a core network, wherein the group call message carries a network location area set; based on a third correspondence between a transmitted beam and a network location area covered by the beam, determine a target beam covering a network location area in the network location area set to obtain a target beam set, wherein the access device stores the third correspondence; and perform a group call operation on at least one terminal device through the target beam set; A terminal device is used to determine the geographical location of the terminal device and report the geographical location to a core network; or to determine the geographical location of the terminal device, determine a network location area of ​​the terminal device based on the geographical location, and report the network location area to the core network.

21. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, wherein the computer program, when executed by a processor, implements the steps of the method described in any one of claims 1 to 8, 9 to 16, or 17 to 19.

22. An electronic device comprising a memory and a processor, characterized in that: A computer program is stored in the memory, and the processor is configured to run the computer program to perform the method described in any one of claims 1 to 8, 9 to 16, or 17 to 19.

23. A computer program product comprising a computer program, characterized in that When the computer program is executed by a processor, the steps of the method described in any one of claims 1 to 8 or 9 to 16 or 17 to 19 are implemented.

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