Wireless communication method and apparatus

Abstract

Provided are a wireless communication method and device, the method comprising: a first access network device sending a first message comprising a coverage modification list to a second access network device through at least one of the following interfaces: an Xn interface, an NG interface and an S1 interface. The first access network device sending the first message to the second access network device based on the Xn interface, the NG interface and the S1 interface is equivalent to the first access network device and the second access network device being able to directly interact the first message or interact the first message through a core network device, which not only avoids introducing a management device specially used for transmitting the first message to reduce the optimization cost of CCO, but also is applicable to different communication scenarios to support CCO within a system and CCO between systems, and accordingly, the applicability of CCO can be improved.

Description

[0001] This application is a divisional application of the prior application with the application number 202080099361.X and the title "Wireless communication method and device". TECHNICAL FIELD

[0002] Embodiments of the present application relate to the field of communications, and more specifically, to a wireless communication method and device. BACKGROUND

[0003] In Long Term Evolution (LTE), Coverage and Capacity Optimization (CCO) adjusts the angle, power and other transmission parameters of the cell antenna to improve the coverage and capacity performance of the network. For example, if a hotspot area is located near the cell boundary, the interference between cells will increase, thereby affecting the efficiency of the use of wireless resources and capacity. Based on this, the cell where the hotspot area is located needs to adjust the coverage range of the cell. Correspondingly, the neighboring cell also needs to adjust the coverage range of the cell after receiving the information of the cell where the hotspot area is located adjusting the coverage range.

[0004] However, the CCO in LTE needs to refer to a special Operation Administration and Maintenance (OAM) device, which increases the optimization cost. In addition, since the 5-Generation (5G) introduces beamforming technology, the cell coverage form will be more flexible than LTE, and the CCO in LTE is not applicable to the 5G scenario. SUMMARY

[0005] A wireless communication method and device are provided, which not only can reduce the optimization cost of CCO, but also can be applicable to different communication scenarios to improve the applicability of CCO.

[0006] In a first aspect, a wireless communication method is provided, comprising:

[0007] The first access network device sends a first message including a coverage modification list to the second access network device through at least one of the following interfaces: an Xn interface, an NG interface and an S1 interface.

[0008] In a second aspect, a wireless communication method is provided, comprising:

[0009] The second access network device receives the first message including the coverage modification list sent by the first access network device through at least one of the following interfaces: an Xn interface, an NG interface and an S1 interface.

[0010] In a third aspect, an access network device is provided for performing the method in the first aspect or various implementation manners thereof. Specifically, the access network device comprises functional modules for performing the method in the first aspect or various implementation manners thereof.

[0011] In a fourth aspect, an access network device is provided for performing the method in the second aspect or various implementation manners thereof. Specifically, the access network device comprises functional modules for performing the method in the second aspect or various implementation manners thereof.

[0012] In a fifth aspect, an access network device is provided, comprising a processor and a memory. The memory is configured to store a computer program, and the processor is configured to invoke and run the computer program stored in the memory, so as to perform the method in the first aspect or various implementation manners thereof.

[0013] In a sixth aspect, an access network device is provided, comprising a processor and a memory. The memory is configured to store a computer program, and the processor is configured to invoke and run the computer program stored in the memory, so as to perform the method in the second aspect or various implementation manners thereof.

[0014] In a seventh aspect, a chip is provided for implementing the method in any one of the first aspect to the second aspect or various implementation manners thereof. Specifically, the chip comprises a processor configured to invoke and run a computer program from a memory, so that a device installed with the chip performs the method in any one of the first aspect to the second aspect or various implementation manners thereof.

[0015] In an eighth aspect, a computer readable storage medium is provided for storing a computer program, which causes a computer to perform the method in any one of the first aspect to the second aspect or various implementation manners thereof.

[0016] In a ninth aspect, a computer program product is provided, comprising computer program instructions, which cause a computer to perform the method in any one of the first aspect to the second aspect or various implementation manners thereof.

[0017] In a tenth aspect, a computer program is provided, which, when running on a computer, causes the computer to perform the method in any one of the first aspect to the second aspect or various implementation manners thereof.

[0018] Based on the above technical solution, the first access network device sends the first message including the coverage modification list to the second access network device through at least one of the following interfaces: an Xn interface, an NG interface, and an S1 interface, which means that the first access network device and the second access network device can directly interact with the first message or interact with the first message through a core network device. Not only can the introduction of a management device specially used for transmitting the first message be avoided to reduce the optimization cost of CCO, but also different communication scenarios can be applied to support CCO within the system and CCO between systems, and accordingly, the applicability of CCO can be improved. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is an example of an application scenario provided by the embodiments of the present application.

[0020] Figure 2 is a schematic flow chart of a wireless communication method provided by the embodiments of the present application.

[0021] Figure 3 is a schematic diagram of modifying the coverage range of an SSB based on CCO provided by the embodiments of the present application.

[0022] Figure 4 and Figure 5 are schematic structural diagrams of the connection relationship between the first access network device and the second access network device provided by the embodiments of the present application.

[0023] Figure 6 is another schematic flow chart of a wireless communication method provided by the embodiments of the present application.

[0024] Figure 7 and Figure 8 are schematic block diagrams of an access network device provided by the embodiments of the present application.

[0025] Figure 9 is a schematic block diagram of a communication device provided by the embodiments of the present application.

[0026] Figure 10 is a schematic block diagram of a chip provided by the embodiments of the present application. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0028] Figure 1 is a schematic diagram of an application scenario of an embodiment of the present application.

[0029] As shown in Figure 1 The communication system 100 can include an access network device 120 and an access network device 130, which can interact messages through an Xn interface. The access network device 120 and the access network device 130 can communicate with terminal devices through an air interface.

[0030] It should be understood that the embodiments of the present application are only exemplarily described with the communication system 100, but the embodiments of the present application are not limited thereto. That is, the technical solutions of the embodiments of the present application can be applied to various communication systems, such as a Long Term Evolution (LTE) system, an LTE Time Division Duplex (TDD), a Universal Mobile Telecommunication System (UMTS), a 5G communication system (also referred to as a New Radio (NR) communication system), or a future communication system, etc.

[0031] As shown in Figure 1 The access network device 120 and the access network device 130 can be access network devices that communicate with terminal devices. An access network device can provide communication coverage for a specific geographic area and can communicate with terminal devices (such as UEs) located within the coverage area. For example, the access network device 120 can correspond to a cell 121, and terminal devices located within the cell 121 communicate with the access network device 120. For another example, the access network device 130 can correspond to a cell 131, and terminal devices located within the cell 131 communicate with the access network device 130. Optionally, a hotspot area 122 of terminal devices exists at a boundary position of the cell 121.

[0032] In the present application, the effect of covering the hotspot area 122 can be adjusted through CCO. For example, the coverage of the cell 121 and the cell 131 can be adjusted so that the hotspot area 122 is no longer located at the boundary of the cell 121.

[0033] As shown in Figure 1 Through CCO, the coverage of the cell 121 is expanded and the coverage of the cell 131 is reduced, so that the position of the hotspot area 122 is closer to the central area of the cell 121.

[0034] As an example, the access network device 120 and the access network device 130 referred to above can be an Evolutional Node B (eNB or eNodeB) in a Long Term Evolution (LTE) system, or a Next Generation Radio Access Network (NG RAN) device, or a base station (gNB) in a NR system, or a radio controller in a Cloud Radio Access Network (CRAN), or the network device 120 can be a relay station, an access point, a vehicle-mounted device, a wearable device, a hub, a switch, a bridge, a router, or a network device in a future evolved Public Land Mobile Network (PLMN), etc.

[0035] The terminal device can be any terminal device, including but not limited to a terminal device connected to an access network device or other terminal devices by wire or wireless connection.

[0036] For example, the terminal device can refer to an access terminal, a User Equipment (UE), a subscriber unit, a subscriber station, a mobile station, a mobile, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, a user agent, or a user equipment. The access terminal can be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with wireless communication function, a computing device, or other processing devices connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a 5G network, or a terminal device in a future evolved network, etc.

[0037] The terminal device can be used for Device to Device (D2D) communication.

[0038] As Figure 1As shown, the wireless communication system can further include a core network device 110 in communication with the access network devices 120 and 130, which can be a 5G core (5GC) device, e.g., an Access and Mobility Management Function (AMF), e.g., an Authentication Server Function (AUSF), e.g., a User Plane Function (UPF), e.g., a Session Management Function (SMF). Alternatively, the core network device 110 can also be an Evolved Packet Core (EPC) device of an LTE network, e.g., a Session Management Function + Core Packet Gateway (SMF + PGW-C) device. It should be understood that the SMF + PGW-C can implement the functions of both the SMF and the PGW-C. In the process of network evolution, the above-mentioned core network device can also be called by other names, or new network entities can be formed by dividing the functions of the core network, which is not limited by the embodiments of the present application.

[0039] The various functional units in the communication system 100 can also establish connections through a next generation (NG) interface to communicate with each other.

[0040] For example, a terminal device establishes an air interface connection with an access network device through an NR interface, which is used to transmit user plane data and control plane signaling; the terminal device can establish a control plane signaling connection with an AMF through an NG interface 1 (N1 for short); an access network device, e.g., a next generation radio access base station (gNB), can establish a user plane data connection with a UPF through an NG interface 3 (N3 for short); the access network device can establish a control plane signaling connection with the AMF through an NG interface 2 (N2 for short); the UPF can establish a control plane signaling connection with an SMF through an NG interface 4 (N4 for short); the UPF can interact with a data network to transmit user plane data through an NG interface 6 (N6 for short); the AMF can establish a control plane signaling connection with the SMF through an NG interface 11 (N11 for short); the SMF can establish a control plane signaling connection with a PCF through an NG interface 7 (N7 for short).

[0041] Figure 1The foregoing merely illustrates the principles of the application. It will thus be appreciated that those skilled in the art will be able to devise various arrangements that, although not explicitly described or shown herein, embody the principles of the application and are thus within its spirit and scope. For example, the wireless communication system 100 can alternatively include multiple access network devices and each access network device can include other numbers of terminal devices within its coverage area. As another example, the access network device 120 and the access network device 130 can be connected to different core network devices. For example, the access network device can be connected to a 5G core network device, and the access network device 130 can be connected to a 4G core network device.

[0042] It should be understood that the devices with communication functions in the network / system in the embodiments of the present application can all be referred to as communication devices. For example, the access network device 120 and the access network device 130 shown in the communication system 100 can be referred to as communication devices. Figure 1 The communication system 100 shown is an example. The communication devices can include the access network device 120, the access network device 130, and the terminal device, which have communication functions. The communication devices can also include other devices in the communication system 100, such as a network controller, a mobile management entity, and other network entities. The embodiments of the present application do not limit this.

[0043] Figure 2 A schematic flowchart of a wireless communication method 200 according to an embodiment of the present application is shown. The method 200 can be performed by an access network device. For example, the method 200 can be performed by the access network device 120 or the access network device 130 shown in FIG. 1. Figure 1 The communication system 100 shown is an example. The communication devices can include the access network device 120, the access network device 130, and the terminal device, which have communication functions. The communication devices can also include other devices in the communication system 100, such as a network controller, a mobile management entity, and other network entities. The embodiments of the present application do not limit this.

[0044] As shown in FIG. 2, the method 200 can include the following steps. Figure 2

[0045] S210, the first access network device sends a first message including a coverage modification list to the second access network device through at least one of the following interfaces: an Xn interface, an NG interface, and an S1 interface.

[0046] The first access network device sends a first message including a coverage modification list to the second access network device through at least one of the following interfaces: an Xn interface, an NG interface, and an S1 interface. In other words, the first access network device and the second access network device can directly interact with the first message or interact with the first message through a core network device. This not only avoids introducing a management device specially used for transmitting the first message to reduce the optimization cost of CCO, but also applies to different communication scenarios to support intra-system CCO and inter-system CCO. Accordingly, the applicability of CCO can be improved.

[0047] For example, the first message is a configuration update message.

[0048] ​In other words, the interaction between the first access network device and the second access network device includes a configuration update message (configuration update) of a coverage modification list, and CCO can be implemented.

[0049] In some embodiments of the present application, the coverage modification list includes at least one of the following information:

[0050] an identifier of the first cell whose coverage needs to be adjusted;

[0051] information indicating a coverage state of the first cell;

[0052] information indicating whether to apply a cell deployment state at the next reconfiguration;

[0053] an identifier of a replacement cell;

[0054] a synchronization signal / physical broadcast channel block (SSB) state list corresponding to the first cell.

[0055] The information indicating whether to apply a cell deployment state at the next reconfiguration can also be referred to as a cell deployment state indicator. For example, if the information indicating whether to apply a cell deployment state at the next reconfiguration exists, the first message can include the identifier of the replacement cell.

[0056] For example, the SSB state list includes an identifier of at least one SSB corresponding to the first cell whose coverage needs to be adjusted, and / or at least one information respectively indicating a state of the at least one SSB. Optionally, any of the at least one information indicates, by a first value, that a state of an SSB corresponding to the any of the at least one information is a deactivated state; and / or, any of the at least one information indicates, by a second value or a first type, that a state of an SSB corresponding to the any of the at least one information is an activated state and / or indicates a coverage configuration of the SSB corresponding to the any of the at least one information. For example, any of the identifier of the at least one SSB is an integer. For example, a value range of any of the at least one information is 0-15. Optionally, the first value is 0, and a value range of the second value is 1-15. Of course, the above values are only examples and are not understood as limiting the present application.

[0057] In some embodiments of the present application, the first type includes at least one of a high coverage type, a medium coverage type, and a low coverage type.

[0058] For example, any of the at least one information indicates, by a high coverage type, that a state of the SSB corresponding to the any of the at least one information is an active state and / or indicates a coverage configuration of the SSB corresponding to the any of the at least one information.

[0059] In other words, any of the at least one information indicates, by at least one of a high coverage type, a medium coverage type and a low coverage type, a coverage configuration of the SSB corresponding to the any of the at least one information, and at this time, a state of the SSB corresponding to the any of the at least one information is defaulted as an active state.

[0060] In some embodiments of the present application, the identifier of the first cell is an evolved universal terrestrial radio access network cell global identifier (E-UTRAN Cell Global Identifier, ECGI), or the identifier of the first cell is a new radio cell global identifier (New Radio Cell Global Identifier, NCGI).

[0061] Figure 3 is a schematic diagram provided by an embodiment of the present application for modifying a coverage range of an SSB based on a CCO.

[0062] As shown in Figure 3 The first access network device determines that a cell whose coverage range needs to be modified corresponds to three SSBs, i.e., SSB1, SSB2 and SSB3, and only modifies the coverage range of SSB3. The first message sent by the first access network device to the second access network device can only include an identifier of SSB3 and a coverage configuration of the SSB3, so that the second access network device modifies the coverage range of an SSB opposite to the SSB3 based on the identifier of SSB3 and the coverage configuration of the SSB3 in the first message.

[0063] In other words, the first message can only include an identifier of at least one SSB corresponding to a cell whose coverage range needs to be modified, i.e., only the coverage range of the at least one SSB needs to be modified, thereby avoiding modification of the coverage range of the cell.

[0064] In other words, the first access network device can not inform the second access network device of the coverage range of the cell, but instead informs the second access network device of the coverage range of the SSB(s) in the cell.

[0065] It should be noted that, in 5G NR, due to the consideration of deploying higher frequency, in order to expand the coverage, the SSB containing the Demodulation Reference Signal (DMRS) and the SSB containing the primary synchronization, secondary synchronization and MIB are no longer omnidirectional transmission, but are transmitted in a certain direction at each moment. For example, a plurality of SSBs can be transmitted in a certain half frame at intervals of time, so that the terminal performs beam scanning. For example, each of the plurality of SSBs corresponds to a beam scanning direction, and finally there is an SSB in each direction, and the plurality of SSBs can also be called an SSB set. In other words, all SSBs in the SSB set are in the same half frame. Optionally, the period of the SSB set can be 5, 10, 20, 40, 80, 160 ms. Optionally, the period of the SSB set can be indicated in SIB1. Optionally, during the initial cell search, that is, when the terminal device has not received SIB1, the terminal device can search for SSBs according to the default period of 20 ms. Optionally, SSBs in different directions can correspond to different SSB indexes (SSB-indexes).

[0066] Based on this, it can be found that the coverage of each SSB can not only determine the coverage of the control plane signaling, but also determine the coverage of the data channel. Therefore, in the embodiments of the present application, by modifying the coverage of the SSB, the optimization granularity of the CCO can be refined, and accordingly the optimization effect of the CCO can be improved.

[0067] In some embodiments of the present application, the communication system to which the first access network device belongs and the communication system to which the second access network device belongs are the same communication system. For example, the first access network device and the second access network device are both connected to the same core network element. As an example of the present application, the first access network device and the second access network device support or do not support the Xn interface.

[0068] In some embodiments of the present application, the S210 can include:

[0069] The first access network device sends the first message to the second access network device through the Xn interface.

[0070] For example, if the communication system to which the first access network device belongs and the communication system to which the second access network device belongs are the same communication system, the first access network device sends the first message to the second access network device through the Xn interface. For example, if the first access network device and the second access network device are both connected to the same core network element, and the Xn interface is supported between the first access network device and the second access network device, the first access network device sends the first message to the second access network device through the Xn interface.

[0071] Figure 4 is a schematic structural diagram of a connection relationship between a first access network device and a second access network device provided by an embodiment of the present application.

[0072] As shown in Figure 4 , the first access network device and the second access network node are both 5G wireless access network nodes, and the first access network device can be connected to the second access network device through an Xn interface.

[0073] For example, the first access network device can send a 5G wireless access network node configuration update (NG-RAN node ConfigurationUpdate) message carrying a coverage modification list to the second access network device through the Xn interface, so that the second access network device adjusts the cell coverage of the second access network device.

[0074] Since the first access network device and the second access network device can both be ng-eNB or gNB, the cell ID of the cell of the first access network device, i.e., the E-UTRAN cell global identifier (ECGI) or the new radio cell global identifier (NCGI), needs to be provided in the coverage modification list. For ECGI, the coverage modification list can include at least one of the following: the identifier of the first cell whose coverage needs to be adjusted, information indicating the coverage status of the first cell, information indicating whether to apply the cell deployment status next time reconfiguration, and the identifier of the replacement cell. For NGCI, the coverage modification list can include coverage status indications of all SSBs or at least coverage status indications of SSBs that need to be modified and corresponding SSB index numbers.

[0075] Of course, if the communication system to which the first access network device belongs and the communication system to which the second access network device belongs are the same communication system, the first access network device can also send the first message to the second access network device through the NG interface or the S1 interface. For example, if the first access network device and the second access network device are both connected to the same core network element, and the Xn interface is not supported between the first access network device and the second access network device, the first access network device can also send the first message to the second access network device through the NG interface or the S1 interface.

[0076] In some embodiments of the present application, the communication system to which the first access network device belongs and the communication system to which the second access network device belongs are different communication systems. Optionally, the different communication systems can mean that the first access device and the second access network device are respectively connected to two different core network elements. For example, the different communication systems can mean that the first access device and the second access network device are respectively connected to an AMF and an EPC. In other words, the first access network device and the second access device can only exchange information through the S1 and NG interfaces.

[0077] In some embodiments of the present application, the first access network device is a 5-Generation (5G) access network device; the S210 can include:

[0078] The first access network device sends the first message to an Access and Mobility Management Function (AMF) through the NG interface.

[0079] In some embodiments of the present application, the first access network device is a 4-Generation (4G) access network device; the S210 can include:

[0080] The first access network device sends the first message to a Mobility Management Element (MME) through the S1 interface or sends the first message to an Access and Mobility Management Function (AMF) through the NG interface.

[0081] Figure 5 is another schematic structural diagram of the connection relationship between the first access network device and the second access network device provided by the embodiments of the present application.

[0082] As Figure 5As shown, assuming the first access network device is a 5G access network device and the second access network device is a 4G access network device, the first access network device sends the first message to the AMF through the NG interface, so that the AMF delivers the first message to a Mobility Management Entity (MME) through an N26 interface, and then the MME sends the first message to the second access network device through an S1 interface.

[0083] For example, the first access network device can send a 5G NG-RAN node Configuration Update message carrying a coverage Modification List to the AMF through an NG interface, so that the AMF delivers the NG-RAN node Configuration Update message to the MME through an N26 interface, and then the MME sends the NG-RAN node Configuration Update message to the second access network device, and the second access network device adjusts the cell coverage of the second access network device based on the NG-RAN node Configuration Update message.

[0084] Since the first access network device and the second access network device can both be ng-eNB or gNB, the coverage Modification List needs to provide the cell ID of the cell of the first access network device, i.e., an E-UTRAN Cell Global Identifier (ECGI) or a New Radio Cell Global Identifier (NCGI). For ECGI, the coverage Modification List can include at least one of the following: an identifier of a first cell whose coverage needs to be adjusted, information indicating the coverage status of the first cell, information indicating whether to apply the cell deployment status at the next reconfiguration, and an identifier of a replacement cell. For NGCI, the coverage Modification List can include coverage status indications of all SSBs or at least coverage status indications of SSBs that need to be modified and corresponding SSB index numbers.

[0085] Of course, if the first access network device is a 4G access network device and the second access network device is a 5G access network device, the first access network device can send the first message to the MME through an S1 interface, so that the MME delivers the first message to the AMF through an N26 interface, and then the AMF sends the first message to the second access network device through an NG interface.

[0086] The preferred embodiments of the present application are described in detail above with reference to the drawings, but the present application is not limited to the specific details described in the above embodiments. Within the technical concept of the present application, various simple modifications can be made to the technical solutions of the present application, and these simple modifications all belong to the protection scope of the present application. For example, in the above specific embodiments, various specific technical features described in the above specific embodiments can be combined in any appropriate manner without contradiction. In order to avoid unnecessary repetition, various possible combination manners are not described again in the present application. For another example, various different embodiments of the present application can also be combined in any manner, as long as it does not deviate from the idea of the present application, and it should also be considered as disclosed in the present application.

[0087] It should also be understood that, in various method embodiments of the present application, the magnitude of the serial number of each process described above does not mean the order of execution, and the execution order of each process should be determined according to its function and inherent logic, and should not constitute any limitation on the implementation process of the embodiments of the present application. In addition, in the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, indicating that there can be three relationships. Specifically, A and / or B can represent the following three cases: A exists alone, A and B exist together, and B exists alone. In addition, the character " / " in this paper generally represents that the front and rear associated objects are in an "or" relationship.

[0088] The above describes the wireless communication method according to the embodiments of the present application from the perspective of the first access network device, and the following will describe the wireless communication method according to the embodiments of the present application from the perspective of the second access network device. Figures 2 to 5 The wireless communication method according to the embodiments of the present application is described in detail from the perspective of the first access network device, and the following will describe the wireless communication method according to the embodiments of the present application from the perspective of the second access network device. Figure 6 The wireless communication method according to the embodiments of the present application is described in detail from the perspective of the first access network device, and the following will describe the wireless communication method according to the embodiments of the present application from the perspective of the second access network device.

[0089] Figure 6 A schematic flowchart of a wireless communication method 300 according to an embodiment of the present application is shown. The method 200 can be performed by an access network device. For example, Figure 1 The access network device 120 or the access network device 130 shown in FIG. 1.

[0090] As shown in FIG. 3, the method 300 can include: Figure 6 As shown in FIG. 3, the method 300 can include:

[0091] S310, the second access network device receives the first message including the coverage modification list sent by the first access network device through at least one of the following interfaces: Xn interface, NG interface and S1 interface.

[0092] In some embodiments of the present application, the coverage modification list includes at least one of the following information:

[0093] The identity of the first cell whose coverage needs to be adjusted;

[0094] information for indicating a coverage state of the first cell;

[0095] information for indicating whether to apply a cell deployment state next time of reconfiguration;

[0096] an identifier of a substitute cell;

[0097] a synchronization signal / physical broadcast channel block, SSB, state list corresponding to the first cell.

[0098] For example, the second access network device can make corresponding coverage modification for a neighbor cell of the first cell based on the first message. For example, the second access network device can make coverage modification of the neighbor cell based on a coverage range of the first cell. For example, the coverage range of the first cell can be determined based on previously collected downlink channel quality of the first cell. For example, the coverage range of the first cell can be determined based on measurement results of measurement quantities such as downlink reference signal receiving power (RSRP) of the first cell reported by terminal devices at various locations.

[0099] In some embodiments of the present application, the SSB state list includes an identifier of at least one SSB corresponding to the first cell that needs to adjust a coverage range, and / or at least one information for respectively indicating a state of the at least one SSB.

[0100] In some embodiments of the present application, the identifier of the first cell is an evolved universal terrestrial radio access network cell global identifier (ECGI), or the identifier of the first cell is a new radio cell global identifier (NCGI).

[0101] In some embodiments of the present application, any information in the at least one information indicates, by a first value, that a state of a SSB corresponding to the any information is a deactivation state; and / or, any information in the at least one information indicates, by a second value or a first type, that a state of a SSB corresponding to the any information is an activation state and / or indicates a coverage configuration of the SSB corresponding to the any information.

[0102] In some embodiments of the present application, the first type includes at least one of a high coverage type, a medium coverage type, and a low coverage type.

[0103] In some embodiments of the present application, a communication system to which the first access network device belongs and a communication system to which the second access network device belongs are the same communication system.

[0104] In some embodiments of the present application, the S310 can include:

[0105] The second access network device receives the first message sent by the first access network device through the Xn interface.

[0106] In some embodiments of the present application, the communication system to which the first access network device belongs and the communication system to which the second access network device belongs are different communication systems.

[0107] In some embodiments of the present application, the second access network device is a fifth generation mobile communication technology (5G) access network device; and the S310 can include:

[0108] The second access network device receives the first message sent by the access and mobility management function (AMF) through the NG interface.

[0109] In some embodiments of the present application, the second access network device is a fourth generation mobile communication technology (4G) access network device; and the S310 can include:

[0110] The second access network device receives the first message sent by the mobility management network element (MME) through the S1 interface or receives the first message sent by the access and mobility management function (AMF) through the NG interface.

[0111] In some embodiments of the present application, the first message is a configuration update message.

[0112] It should be understood that the steps in the method 200 can refer to the corresponding steps in the method 200 described above, and for the sake of brevity, will not be repeated here.

[0113] The method embodiments of the present application are described in detail above in conjunction with Figures 1 to 6 , the device embodiments of the present application are described in detail below in conjunction with Figures 7 to 10 .

[0114] Figure 7 is a schematic block diagram of an access network device 400 according to an embodiment of the present application.

[0115] As shown in Figure 7 , the access network device 400 can include:

[0116] The communication unit 410 is configured to send, to a second access network device, a first message including a coverage modification list through at least one of the following interfaces: an Xn interface, an NG interface, and an S1 interface.

[0117] In some embodiments of the present application, the coverage modification list includes at least one of the following information:

[0118] an identifier of a first cell whose coverage needs to be adjusted;

[0119] Information used to indicate the coverage status of the first cell;

[0120] Information used to indicate whether the cell deployment status should be applied during the next reconfiguration;

[0121] Replacement for community signage;

[0122] The status list of the Synchronization Signal / Physical Broadcast Channel Block (SSB) corresponding to the first cell.

[0123] In some embodiments of this application, the SSB status list includes the identifier of at least one SSB corresponding to the first cell that requires coverage adjustment, and / or at least one piece of information for indicating the status of the at least one SSB.

[0124] In some embodiments of this application, any one of the at least one pieces of information indicates, through a first numerical value, that the SSB corresponding to the at least one piece of information is in a deactivated state; and / or, any one of the at least one pieces of information indicates, through a second numerical value or a first type, that the SSB corresponding to the at least one piece of information is in an activated state and / or indicates the overlay configuration of the SSB corresponding to the at least one piece of information.

[0125] In some embodiments of this application, the first type includes at least one of a high coverage type, a medium coverage type, and a low coverage type.

[0126] In some embodiments of this application, the identifier of the first cell is the Evolved Universal Terrestrial Radio Access Network Cell Global Identifier (ECGI), or the identifier of the first cell is the New Radio Interface Cell Global Identifier (NCGI).

[0127] In some embodiments of this application, the communication system to which the first access network device belongs and the communication system to which the second access network device belongs are the same communication system.

[0128] In some embodiments of this application, the communication unit 410 is specifically used for:

[0129] The first message is sent to the second access network device through the Xn interface.

[0130] In some embodiments of this application, the communication system to which the first access network device belongs and the communication system to which the second access network device belongs are different communication systems.

[0131] In some embodiments of this application, the first access network device is a 5G access network device; the communication unit 410 is specifically used for:

[0132] The first message is sent to the Access and Mobility Management Function (AMF) via the NG interface.

[0133] In some embodiments of the present application, the first access network device is a fourth generation mobile communication technology (4G) access network device; and the communication unit 410 is specifically configured to:

[0134] send the first message to a mobility management network element (MME) through the S1 interface or send the first message to an access and mobility management function (AMF) through the NG interface.

[0135] In some embodiments of the present application, the first message is a configuration update message.

[0136] It should be understood that the device embodiments and the method embodiments can correspond to each other, and similar descriptions can be referred to the method embodiments. Specifically, Figure 7 The access network device 400 shown can correspond to the corresponding subject in the method 200 of performing the embodiments of the present application, and the foregoing and other operations and / or functions of the various units in the access network device 400 are respectively for realizing the corresponding processes in the various methods Figure 2 In order to be brief, they will not be repeated here.

[0137] Figure 8 is a schematic block diagram of the access network device 500 of the embodiments of the present application.

[0138] As Figure 8 shown, the access network device 500 can include:

[0139] The communication unit 510 is configured to receive a first message including a coverage modification list sent by a first access network device through at least one of the following interfaces: an Xn interface, an NG interface, and an S1 interface.

[0140] In some embodiments of the present application, the coverage modification list includes at least one of the following information:

[0141] an identifier of the first cell whose coverage needs to be adjusted;

[0142] information for indicating the coverage state of the first cell;

[0143] information for indicating whether to apply the cell deployment state at the next reconfiguration;

[0144] an identifier of a replacement cell;

[0145] a synchronization signal / physical broadcast channel block (SSB) state list corresponding to the first cell.

[0146] In some embodiments of the present application, the SSB state list includes an identifier of at least one SSB corresponding to the first cell whose coverage needs to be adjusted, and / or at least one information for respectively indicating the state of the at least one SSB.

[0147] In some embodiments of the present application, the identity of the first cell is an evolved universal terrestrial radio access network cell global identity ECGI, or the identity of the first cell is a new radio cell global identity NCGI.

[0148] In some embodiments of the present application, any information of the at least one information indicates, by a first value, that a state of the SSB corresponding to the any information is a deactivated state; and / or, any information of the at least one information indicates, by a second value or a first type, that a state of the SSB corresponding to the any information is an activated state and / or indicates a coverage configuration of the SSB corresponding to the any information.

[0149] In some embodiments of the present application, the first type includes at least one of a high coverage type, a medium coverage type, and a low coverage type.

[0150] In some embodiments of the present application, the communication system to which the first access network device belongs and the communication system to which the second access network device belongs are the same communication system.

[0151] In some embodiments of the present application, the communication unit 510 is specifically configured to:

[0152] receive, through the Xn interface, the first message sent by the first access network device.

[0153] In some embodiments of the present application, the communication system to which the first access network device belongs and the communication system to which the second access network device belong are different communication systems.

[0154] In some embodiments of the present application, the second access network device is a fifth generation mobile communication technology 5G access network device; and the communication unit 510 is specifically configured to:

[0155] receive, through the NG interface, the first message sent by an access and mobility management function AMF.

[0156] In some embodiments of the present application, the second access network device is a fourth generation mobile communication technology 4G access network device; and the communication unit 510 is specifically configured to:

[0157] receive, through the S1 interface, the first message sent by a mobility management network element MME or receive, through the NG interface, the first message sent by an access and mobility management function AMF.

[0158] In some embodiments of the present application, the first message is a configuration update message.

[0159] It should be understood that the apparatus embodiments and the method embodiments can correspond to each other, and similar descriptions can be made with reference to the method embodiments. Specifically, Figure 8 The access network device 500 shown can correspond to the respective subject performing the method 300 of the embodiments of the present application, and the foregoing and other operations and / or functions of the various units in the access network device 500 are respectively implemented by the respective units in the access network device 500 to achieve the respective processes in the various methods Figure 6 in the foregoing description, the foregoing and other operations and / or functions of the various units in the access network device 500 are respectively implemented by the respective units in the access network device 500 to achieve the respective processes in the various methods

[0160] The communication device of the embodiments of the present application is described above in conjunction with the accompanying drawings from the perspective of functional modules. It should be understood that the functional modules can be implemented in the form of hardware, or in the form of instructions of software, or in the form of a combination of hardware and software modules.

[0161] Specifically, the steps of the method embodiments in the embodiments of the present application can be completed by the integrated logic circuit of hardware in the processor and / or the instructions in the form of software, and the steps of the method disclosed in the embodiments of the present application can be directly embodied as hardware code processing for execution, or executed by a combination of hardware and software modules in the code processing processor.

[0162] Alternatively, the software module can be located in a mature storage medium in the art, such as random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, register, etc. The storage medium is located in the memory, and the processor reads the information in the memory to complete the steps in the above method embodiments in combination with its hardware.

[0163] For example, the processing unit and the communication unit referred to above can be respectively implemented by the processor and the transceiver.

[0164] Figure 9 is a schematic structural diagram of the communication device 600 of the embodiments of the present application.

[0165] As shown in Figure 9 , the communication device 600 can include a processor 610.

[0166] The processor 610 can call and run a computer program from the memory to implement the method in the embodiments of the present application.

[0167] Please continue to refer to Figure 9 , the communication device 600 can further include a memory 620.

[0168] The memory 620 can be used to store indication information, and can also be used to store codes, instructions, etc. executed by the processor 610. The processor 610 can call and run a computer program from the memory 620 to implement the method in the embodiments of the present application. The memory 620 can be a separate device independent of the processor 610, or can be integrated in the processor 610.

[0169] Please continue to see Figure 9 The communication device 600 can further include a transceiver 630.

[0170] The processor 610 can control the transceiver 630 to communicate with other devices, specifically, can send information or data to other devices, or receive information or data sent by other devices. The transceiver 630 can include a transmitter and a receiver. The transceiver 630 can further include an antenna, and the number of antennas can be one or more.

[0171] It should be understood that the various components in the communication device 600 are connected through a bus system, wherein the bus system includes a data bus, a power supply bus, a control bus and a state signal bus in addition to the data bus.

[0172] It should also be understood that the communication device 600 can be a first access network device of the embodiments of the present application, and the communication device 600 can implement the corresponding processes in the various methods of the embodiments of the present application implemented by the first access network device, that is, the communication device 600 of the embodiments of the present application can correspond to the access network device 400 in the embodiments of the present application, and can correspond to the corresponding subject executing the method 200 according to the embodiments of the present application. For the sake of brevity, it will not be repeated here. Similarly, the communication device 600 can be a second access network device of the embodiments of the present application, and the communication device 600 can implement the corresponding processes in the various methods of the embodiments of the present application implemented by the second access network device. That is, the communication device 600 of the embodiments of the present application can correspond to the access network device 500 in the embodiments of the present application, and can correspond to the corresponding subject executing the method 300 according to the embodiments of the present application. For the sake of brevity, it will not be repeated here.

[0173] In addition, the embodiments of the present application also provide a chip.

[0174] For example, the chip can be an integrated circuit chip with signal processing capability, which can implement or execute the disclosed methods, steps and logic block diagrams in the embodiments of the present application. The chip can also be referred to as a system chip, a system chip, a chip system or a system on chip, etc. Alternatively, the chip can be applied to various communication devices, so that the communication device installed with the chip can execute the disclosed methods, steps and logic block diagrams in the embodiments of the present application.

[0175] Figure 10 is a schematic structural diagram of the chip 700 according to an embodiment of the present application.

[0176] As shown in Figure 10 , the chip 700 includes a processor 710.

[0177] The processor 710 can call and run a computer program from the memory to implement the method in the embodiments of the present application.

[0178] Please continue to refer to Figure 10 , the chip 700 can also include a memory 720.

[0179] The processor 710 can call and run a computer program from the memory 720 to implement the method in the embodiments of the present application. The memory 720 can be used to store instruction information, and can also be used to store codes, instructions and the like executed by the processor 710. The memory 720 can be a separate device independent of the processor 710, or can be integrated in the processor 710.

[0180] Please continue to refer to Figure 10 , the chip 700 can also include an input interface 730.

[0181] The processor 710 can control the input interface 730 to communicate with other devices or chips, and specifically, information or data sent by other devices or chips can be acquired.

[0182] Please continue to refer to Figure 10 , the chip 700 can also include an output interface 740.

[0183] The processor 710 can control the output interface 740 to communicate with other devices or chips, and specifically, information or data can be output to other devices or chips.

[0184] It should be understood that the chip 700 can be applied to the access network device in the embodiments of the present application, and the chip can implement the corresponding processes realized by the access network device in each method of the embodiments of the present application, or can implement the corresponding processes realized by the access network device in each method of the embodiments of the present application. In order to be brief, it will not be repeated here.

[0185] It should also be understood that each component in the chip 700 is connected through a bus system, wherein the bus system includes a data bus, a power supply bus, a control bus and a state signal bus in addition to the data bus.

[0186] The processor mentioned above can include but is not limited to:

[0187] General processor, Digital Signal Processor (DSP), Application Specific Integrated Circuit (ASIC), Field Programmable Gate Array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware component, etc.

[0188] The processor can be configured to implement or execute the various methods, steps, and logical blocks disclosed in the embodiments of the present application. The steps of the methods disclosed in conjunction with the embodiments of the present application can be directly embodied in hardware code processing, or a combination of hardware and software modules in the code processing. The software modules can be located in storage media such as random access memory, flash memory, read-only memory, programmable read-only memory, erasable programmable memory, register, etc. in the art. The storage media is in the storage, and the processor reads the information in the storage and combines the hardware to complete the steps of the above method.

[0189] The memory referred to above includes, but is not limited to:

[0190] volatile memory and / or non-volatile memory. The non-volatile memory can be Read-Only Memory (ROM), Programmable ROM (PROM), Erasable PROM (EPROM), Electrically EPROM (EEPROM) or flash memory. The volatile memory can be Random Access Memory (RAM) used as an external cache. By way of example, but not limitation, many forms of RAM are available, such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), Double Data Rate SDRAM (DDR SDRAM), Enhanced SDRAM (ESDRAM), Synch link DRAM (SLDRAM) and Direct Rambus RAM (DR RAM).

[0191] It should be noted that the memory described herein is intended to include these and any other suitable types of memory.

[0192] The computer readable storage medium in the embodiments of the present application further provides a computer program. The computer readable storage medium stores one or more programs, and the one or more programs include instructions, which, when executed by a portable electronic device including a plurality of application programs, enable the portable electronic device to perform the method of the method embodiments.

[0193] Optionally, the computer readable storage medium can be applied to the network device in the embodiments of the present application, and the computer program enables the computer to perform the corresponding procedures implemented by the network device in the various methods of the embodiments of the present application. For the sake of brevity, details are not repeated here.

[0194] Optionally, the computer readable storage medium can be applied to the mobile terminal / terminal device in the embodiments of the present application, and the computer program enables the computer to perform the corresponding procedures implemented by the mobile terminal / terminal device in the various methods of the embodiments of the present application. For the sake of brevity, details are not repeated here.

[0195] The computer program product in the embodiments of the present application further provides a computer program.

[0196] Optionally, the computer program product can be applied to the network device in the embodiments of the present application, and the computer program enables the computer to perform the corresponding procedures implemented by the network device in the various methods of the embodiments of the present application. For the sake of brevity, details are not repeated here.

[0197] Optionally, the computer program product can be applied to the mobile terminal / terminal device in the embodiments of the present application, and the computer program enables the computer to perform the corresponding procedures implemented by the mobile terminal / terminal device in the various methods of the embodiments of the present application. For the sake of brevity, details are not repeated here.

[0198] The computer program in the embodiments of the present application further provides a computer program. When the computer program is executed by a computer, the computer can perform the method of the method embodiments.

[0199] Optionally, the computer program can be applied to the network device in the embodiments of the present application, and when the computer program runs on the computer, the computer performs the corresponding procedures implemented by the network device in the various methods of the embodiments of the present application. For the sake of brevity, details are not repeated here.

[0200] In addition, the embodiments of the present application further provide a communication system, which can include the above-mentioned terminal device and network device to form a communication system as shown in Figure 1The communication system 100 shown here will not be described again in detail for the sake of brevity. It should be noted that the term "system" and the like in this document can also be referred to as "network management architecture" or "network system" and the like.

[0201] It should also be understood that the terms used in the embodiments of the present application and the appended claims are for the purpose of describing particular embodiments and are not intended to limit the embodiments of the present application.

[0202] For example, the singular forms "a", "said" and "the" used in the embodiments of the present application and the appended claims are intended to include the plural forms as well, unless the context clearly indicates otherwise.

[0203] Those skilled in the art can appreciate that the units and algorithm steps of the examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware or in a combination of computer software and electronic hardware. Whether the functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. A skilled person can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the embodiments of the present application.

[0204] If implemented in the form of software functional units and sold or used as an independent product, they can be stored in a computer readable storage medium. Based on such understanding, the technical solutions of the embodiments of the present application essentially or the parts that make contributions to the prior art or the parts of the technical solutions can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes a number of instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the embodiments of the present application. The aforementioned storage medium includes: a U disk, a mobile hard disk, a read-only memory, a random access memory, a magnetic disk or an optical disk, and various media that can store program codes.

[0205] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the above-described system, device and unit can refer to the corresponding processes in the foregoing method embodiments, which will not be described here.

[0206] In several embodiments provided by the present application, it should be understood that the disclosed system, device and method can be implemented in other ways.

[0207] For example, the division of units or modules or components in the above-described device embodiments is only a logical function division, and actual implementation can have another division manner, for example, multiple units or modules or components can be combined or integrated into another system, or some units or modules or components can be ignored or not executed.

[0208] For another example, the above-described units / modules / components as separate / display components can or can not be physically separated, that is, can be located in one place, or can be distributed to multiple network units. Part or all of the units / modules / components can be selected according to actual needs to achieve the purpose of the embodiments of the present application.

[0209] Finally, it should be noted that the above-mentioned coupling or direct coupling or communication connection between each other can be indirect coupling or communication connection through some interfaces, devices or units, and can be electrical, mechanical or other forms.

[0210] The above is only a specific implementation of the embodiments of the present application, but the protection scope of the embodiments of the present application is not limited thereto, any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the embodiments of the present application, which should be covered within the protection scope of the embodiments of the present application. Therefore, the protection scope of the embodiments of the present application should be subject to the protection scope of the claims.

Claims

1. A method of wireless communication, the method comprising: Comprising: The first access network device sends, to the second access network device, a first message comprising a coverage modification list through at least one of the following interfaces: an NG interface and an S1 interface, The coverage modification list comprises a synchronization signal / physical broadcast channel block, SSB, status list corresponding to the first cell, the SSB status list comprises at least one information respectively used for indicating a state of at least one SSB corresponding to the first cell which needs to adjust coverage, any information in the at least one information indicates that the state of the SSB corresponding to the any information is a deactivation state through a first value; and / or any information in the at least one information indicates that the state of the SSB corresponding to the any information is an activation state and / or indicates a coverage configuration of the SSB corresponding to the any information through a second value or a first type, the first type comprises at least one of a high coverage type, a medium coverage type and a low coverage type; The communication system to which the first access network device belongs and the communication system to which the second access network device belongs are different communication systems, The first access network device is a fifth generation mobile communication technology, 5G, access network device, and the first access network device sends, to the second access network device, the first message comprising the coverage modification list through at least one of the following interfaces: an NG interface and an S1 interface, comprising: the first access network device sends the first message to an access and mobility management function, AMF, through the NG interface; or The first access network device is a fourth generation mobile communication technology, 4G, access network device, and the first access network device sends, to the second access network device, the first message comprising the coverage modification list through at least one of the following interfaces: an NG interface and an S1 interface, comprising: the first access network device sends the first message to a mobility management entity, MME, through the S1 interface or sends the first message to an access and mobility management function, AMF, through the NG interface.

2. The method of claim 1, wherein, The coverage modification list further comprises at least one of the following information: An identifier of the first cell which needs to adjust coverage; Information used for indicating a coverage state of the first cell; Information used for indicating whether to apply a cell deployment state at next reconfiguration; An identifier of a replacement cell.

3. The method of claim 1, wherein, The SSB status list further comprises an identifier of at least one SSB corresponding to the first cell which needs to adjust coverage.

4. The method of claim 2, wherein, The identifier of the first cell is an evolved universal terrestrial radio access network cell global identifier, ECGI, or the identifier of the first cell is a new radio cell global identifier, NCGI.

5. A method of wireless communication, the method comprising: Comprising: The second access network device receives, from the first access network device, a first message comprising a coverage modification list through at least one of the following interfaces: an NG interface and an S1 interface, The coverage modification list includes a synchronization signal / physical broadcast channel block (SSB) state list corresponding to the first cell, and the SSB state list includes at least one piece of information indicating a state of at least one SSB corresponding to the first cell that needs to be adjusted in coverage, wherein any piece of information in the at least one piece of information indicates, by a first value, that the state of the SSB corresponding to the any piece of information is a deactivated state; and / or any piece of information in the at least one piece of information indicates, by a second value or a first type, that the state of the SSB corresponding to the any piece of information is an activated state and / or indicates a coverage configuration of the SSB corresponding to the any piece of information, and the first type includes at least one of a high-coverage type, a medium-coverage type, and a low-coverage type. The communication system to which the first access network device belongs and the communication system to which the second access network device belongs are different communication systems. The second access network device is a fifth-generation (5G) access network device, and the second access network device receives the first message including the coverage modification list sent by the first access network device through at least one of the following interfaces: an NG interface and an S1 interface, including that the second access network device receives the first message sent by an access and mobility management function (AMF) through the NG interface; or The second access network device is a fourth-generation (4G) access network device, and the second access network device receives the first message including the coverage modification list sent by the first access network device through at least one of the following interfaces: an NG interface and an S1 interface, including that the second access network device receives the first message sent by a mobility management entity (MME) through the S1 interface or receives the first message sent by an access and mobility management function (AMF) through the NG interface.

6. The method of claim 5, wherein, The coverage modification list includes at least one of the following information: An identifier of the first cell that needs to be adjusted in coverage; Information indicating a coverage state of the first cell; Information indicating whether to apply a cell deployment state at next reconfiguration; An identifier of a replacement cell.

7. The method of claim 6, wherein, The identifier of the first cell is an evolved universal terrestrial radio access network cell global identifier (ECGI), or the identifier of the first cell is a new radio cell global identifier (NCGI).

8. An access network device, comprising: The communication unit is configured to send, to the second access network device, a first message including a coverage modification list through at least one of the following interfaces: an NG interface and an S1 interface, ​ The coverage modification list includes a synchronization signal / physical broadcast channel block, SSB, state list corresponding to the first cell, the SSB state list includes at least one information respectively used for indicating a state of at least one SSB corresponding to the first cell which needs to adjust coverage, any information in the at least one information indicates that the state of the SSB corresponding to the any information is a deactivation state by a first value; and / or any information in the at least one information indicates that the state of the SSB corresponding to the any information is an activation state and / or indicates a coverage configuration of the SSB corresponding to the any information by a second value or a first type, the first type includes at least one of a high coverage type, a medium coverage type and a low coverage type. The communication system to which the communication unit belongs and the communication system to which the second access network device belongs are different communication systems, The communication unit is a fifth generation mobile communication technology, 5G, access network device, and the communication unit is configured to send the first message to an access and mobility management function, AMF, through the NG interface; or The communication unit is a fourth generation mobile communication technology, 4G, access network device, and the communication unit is configured to send the first message to a mobility management network element, MME, through the S1 interface or to the AMF through the NG interface.

9. An access network device, comprising: The communication unit is configured to receive a first message including a coverage modification list sent by a first access network device through at least one of the following interfaces: an NG interface and an S1 interface, The coverage modification list includes a synchronization signal / physical broadcast channel block, SSB, state list corresponding to the first cell, the SSB state list includes at least one information respectively used for indicating a state of at least one SSB corresponding to the first cell which needs to adjust coverage, any information in the at least one information indicates that the state of the SSB corresponding to the any information is a deactivation state by a first value; and / or any information in the at least one information indicates that the state of the SSB corresponding to the any information is an activation state and / or indicates a coverage configuration of the SSB corresponding to the any information by a second value or a first type, the first type includes at least one of a high coverage type, a medium coverage type and a low coverage type. The communication system to which the first access network device belongs and the communication system to which the communication unit belongs are different communication systems, The communication unit is a fifth generation mobile communication technology, 5G, access network device, and the communication unit is configured to receive the first message sent by an access and mobility management function, AMF, through the NG interface; or The communication unit is a fourth generation mobile communication technology, 4G, access network device, and the communication unit is configured to receive the first message sent by a mobility management network element, MME, through the S1 interface or by the AMF through the NG interface. ​

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