CN111586793B

CN111586793B - Communication method, device and computer readable storage medium

Info

Publication number: CN111586793B
Application number: CN201910118127.6A
Authority: CN
Inventors: 耿婷婷; 严乐; 曾清海; 张宏平
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2019-02-15
Filing date: 2019-02-15
Publication date: 2021-08-03
Anticipated expiration: 2039-02-15
Also published as: CN111586793A; WO2020164491A1

Abstract

The embodiment of the application provides a communication method and equipment, relates to the field of wireless communication, and aims to enable terminal equipment to find a CD-SSB (compact disc-single service bus) of a network type supported by the terminal equipment as soon as possible to reside or access when the CD-SSB of multiple network types exists in a carrier bandwidth. The method comprises the following steps: the terminal equipment receives a first cell definition synchronous signal block/physical broadcast channel block CD-SSB sent by access network equipment; the terminal equipment receives a first system message according to the first CD-SSB, wherein the first system message comprises the position information of a second CD-SSB, and the second CD-SSB is a CD-SSB which is different from the network type of the network to which the first CD-SSB belongs; and the terminal equipment determines the frequency domain position of the CD-SSB suitable for the terminal equipment according to the position information of the second CD-SSB.

Description

Communication method, device and computer readable storage medium

Technical Field

The present application relates to the field of wireless communication technologies, and in particular, to a communication method and device.

Background

In order to reduce the sending of system messages and save network overhead, a new radio interface (NR) network introduces a Cell Definition (CD) synchronization signal block/physical broadcast channel block (SSB) and a non-cell definition (NCD) SSB. The CD-SSB includes Minimum System Information (MSI), i.e., the CD-SSB includes a Master Information Block (MIB) and a System Information Block (SIB) 1; the NCD-SSB comprises the MIB or partial cell information configuration in the MIB and the SIB 1. Thus, a CD-SSB may support the park and/or access of a terminal device, whereas an NCD-SSB may not support the park and/or access of a terminal device.

However, as networks have grown mature, a wide variety of networks have emerged. Such as a non-public network (NPN) corresponding to a Public Network (PN). A private network is understood to be a special network, which is only suitable for terminal devices that have a subscription with the private network. At present, no effective method exists for a scene that multiple network types of SSBs exist in a carrier bandwidth, so that a terminal device can find a CD-SSB of a network type supported by the terminal device as soon as possible to perform residence or access.

Disclosure of Invention

The embodiment of the application provides a communication method and device, and when a carrier bandwidth contains CD-SSBs of multiple network types, a terminal device can find the CD-SSBs of the network types supported by the terminal device as soon as possible to perform residence or access.

In order to achieve the above purpose, the embodiment of the present application adopts the following technical solutions:

in a first aspect, an embodiment of the present application provides a communication method, where the method includes: the terminal equipment receives a first cell definition synchronous signal block/physical broadcast channel block CD-SSB sent by access network equipment; the terminal equipment receives a first system message according to the first CD-SSB, wherein the first system message comprises the position information of a second CD-SSB, and the second CD-SSB is a CD-SSB which is different from the network type of the network to which the first CD-SSB belongs; and the terminal equipment determines the frequency domain position of the CD-SSB suitable for the terminal equipment according to the position information of the second CD-SSB. Based on the scheme, when the carrier bandwidth has the CD-SSBs of various network types, the terminal equipment can find the CD-SSBs of the network types supported by the terminal equipment for residence or access as soon as possible.

With reference to the first aspect, in a possible implementation manner, the location information of the second CD-SSB is used to indicate a frequency domain location of the second CD-SSB closest to the frequency domain location of the first CD-SSB. Based on the scheme, when the carrier bandwidth has the CD-SSBs of various network types, the terminal equipment can find the CD-SSBs of the network types supported by the terminal equipment for residence or access as soon as possible according to the position information of the second CD-SSB.

With reference to the first aspect and the foregoing possible implementation manners, in another possible implementation manner, the first system message further includes first indication information or second indication information, where the first indication information is used to indicate a network type of a network to which the first CD-SSB belongs, or the first indication information is used by the terminal device to determine the network type of the network to which the first CD-SSB belongs, and the second indication information is used to indicate a network type of a network to which the second CD-SSB belongs, or the second indication information is used by the terminal device to determine the network type of the network to which the second CD-SSB belongs. Based on the scheme, when there are CD-SSBs of multiple network types in the carrier bandwidth, the terminal device may determine, according to the first indication information in the first system message, the network type of the network to which the first CD-SSB belongs or the network type of the network to which the first CD-SSB belongs, where the terminal device determines according to the first indication information; or the terminal device may find the CD-SSB of the network type supported by the terminal device for residing or accessing as soon as possible according to the network type of the network to which the second CD-SSB belongs, which is indicated by the second indication information, or the network type of the network to which the second CD-SSB belongs, which is determined by the terminal device according to the second indication information.

With reference to the first aspect and the foregoing possible implementation manners, in another possible implementation manner, the location information of the second CD-SSB includes location information of two or more CD-SSBs, and the second indication information includes two or more indication information corresponding to the location information of the two or more CD-SSBs. Based on the scheme, when the carrier bandwidth has the CD-SSBs of multiple network types, the terminal equipment can find the CD-SSBs of the network types supported by the terminal equipment for residence or access as soon as possible according to the position information and the indication information of two or more CD-SSBs.

With reference to the first aspect and the foregoing possible implementation manners, in another possible implementation manner, the first indication information includes bitmap information or identification information of a network, or the second indication information includes bitmap information or identification information of a network. Based on the scheme, when there are CD-SSBs of multiple network types in the carrier bandwidth, the terminal device may indicate the network type of the network to which the first CD-SSB belongs according to the bitmap information in the first indication information or the identification information of the network, or indicate the network type of the network to which the second CD-SSB belongs according to the bitmap information in the second indication information or the identification information of the network, and find the CD-SSB of the network type supported by itself for camping or accessing as soon as possible.

With reference to the first aspect and the possible implementations described above, in another possible implementation, the network type includes a public network, a non-public network, and a hybrid network. Based on the scheme, when the carrier bandwidth contains the CD-SSB of the public network, the CD-SSB of the non-public network and the CD-SSB of the hybrid network, the terminal equipment can find the CD-SSB of the network type supported by the terminal equipment for residence or access as soon as possible.

With reference to the first aspect and the foregoing possible implementation manners, in another possible implementation manner, before the terminal device receives the first CD-SSB sent by the access network device, the method further includes: the terminal equipment receives a first non-cell-defined synchronization signal block/physical broadcast channel block (NCD-SSB) sent by the access network equipment, wherein the first NCD-SSB comprises the position information of the first CD-SSB. Based on the scheme, when the NCD-SSBs of various network types exist in the carrier bandwidth, the terminal equipment can find the CD-SSBs of the network types supported by the terminal equipment for residence or access as soon as possible.

With reference to the first aspect and the foregoing possible implementation manners, in another possible implementation manner, the first NCD-SSB includes third indication information, where the third indication information is used to indicate a network type of a network to which the first NCD-SSB belongs or a network type of a network to which the first CD-SSB belongs. Based on the scheme, when the NCD-SSBs of various network types exist in the carrier bandwidth, the terminal equipment can find the CD-SSBs of the network types supported by the terminal equipment for residence or access as soon as possible according to the third indication information.

With reference to the first aspect and the foregoing possible implementation manners, in another possible implementation manner, before the terminal device receives, according to the first system message, a CD-SSB of a network type supported by the terminal device, where the CD-SSB is sent by the access network device, the method further includes: the terminal device detects that the network type of the network to which the first CD-SSB belongs is not supported, or the terminal device detects that the network type of the network to which the first CD-SSB belongs has low priority, or the terminal device detects that the service supported by other network types is initiated. Based on the scheme, the terminal device can find the CD-SSB of the network type supported by itself for residing or accessing as soon as possible when detecting that the network type of the network to which the first CD-SSB belongs is not supported, or the terminal device detects that the network type of the network to which the first CD-SSB belongs has a low priority, or the terminal device detects that a service supported by other network types is initiated.

In a second aspect, an embodiment of the present application provides a communication method, where the method includes: the access network equipment sends a first CD-SSB to the terminal equipment; the access network equipment sends a first system message to the terminal equipment, wherein the first system message comprises the position information of a second CD-SSB, and the second CD-SSB is a CD-SSB with a different network type from the network to which the first CD-SSB belongs; the access network device sends the terminal device a CD-SSB appropriate for the terminal device. Based on the scheme, if the carrier bandwidth has the CD-SSBs of multiple network types, the terminal equipment can find the CD-SSBs of the network types supported by the terminal equipment for residence or access as soon as possible.

With reference to the second aspect, in a possible implementation manner, the first system message further includes first indication information or second indication information, where the first indication information is used to indicate a network type of a network to which the first CD-SSB belongs, or the first indication information is used by the terminal device to determine the network type of the network to which the first CD-SSB belongs, and the second indication information is used to indicate a network type of a network to which the second CD-SSB belongs, or the second indication information is used by the terminal device to determine the network type of the network to which the second CD-SSB belongs. Based on the scheme, if the carrier bandwidth has the CD-SSBs of multiple network types, the terminal device can find the CD-SSBs of the network types supported by the terminal device for residence or access as soon as possible according to the first indication information or the second indication information.

With reference to the second aspect and the foregoing possible implementation manners, in another possible implementation manner, the location information of the second CD-SSB includes location information of two or more CD-SSBs, and the second indication information includes two or more indication information corresponding to the location information of the two or more CD-SSBs. Based on the scheme, if the carrier bandwidth has the CD-SSBs of multiple network types, the terminal device can find the CD-SSBs of the network types supported by the terminal device for residence or access as soon as possible according to the location information of two or more CD-SSBs and the two or more indication information.

With reference to the second aspect and the foregoing possible implementation manners, in another possible implementation manner, before the access network device sends the first CD-SSB to the terminal device, the method further includes: the access network device sends a first NCD-SSB to the terminal device, wherein the first NCD-SSB comprises the position information of the first CD-SSB. Based on the scheme, if the carrier bandwidth has NCD-SSBs of multiple network types, the terminal equipment can find the CD-SSBs of the network types supported by the terminal equipment for residence or access as soon as possible.

With reference to the second aspect and the foregoing possible implementation manners, in another possible implementation manner, the first NCD-SSB includes third indication information, where the third indication information is used to indicate a network type of a network to which the first NCD-SSB belongs or a network type of a network to which the first CD-SSB belongs. Based on the scheme, if the carrier bandwidth has NCD-SSBs of multiple network types, the terminal device can find the CD-SSBs of the network types supported by the terminal device for residence or access as soon as possible according to the third indication information.

In a third aspect, an embodiment of the present application provides a terminal device, where the terminal device has the method and the function for implementing the first aspect. The function can be realized by hardware, and can also be realized by executing corresponding software by hardware. The hardware or software includes one or more modules corresponding to the functions described above.

In a fourth aspect, an embodiment of the present application provides an access network device, where the access network device has a function and a method for implementing the second aspect. The function can be realized by hardware, and can also be realized by executing corresponding software by hardware. The hardware or software includes one or more modules corresponding to the functions described above.

An embodiment of the present application further provides a terminal device, including: at least one processor, at least one memory, and a communication interface, the at least one memory, and the at least one processor being coupled; the terminal device communicates with other devices through the communication interface, the at least one memory is used for storing a computer program such that the computer program, when executed by the at least one processor, implements the communication method as described in the first aspect and its various possible implementations.

An embodiment of the present application further provides an access network device, including: at least one processor, at least one memory, and a communication interface, the at least one memory, and the at least one processor being coupled; the access network device communicates with other devices via the communication interface, the at least one memory being adapted to store a computer program such that the computer program, when executed by the at least one processor, implements the communication method as set forth in the second aspect and its various possible implementations.

Embodiments of the present application also provide a computer-readable storage medium, such as a computer non-transitory readable storage medium. Having stored thereon a computer program which, when run on a computer, causes the computer to perform any of the possible methods of the first aspect or any of the possible methods of the second aspect. For example, the computer may be at least one storage node.

Embodiments of the present application also provide a computer program product, which when run on a computer causes any of the methods provided in the first aspect or any of the methods provided in the second aspect to be performed. For example, the computer may be at least one storage node.

It is understood that any one of the apparatuses, computer storage media, computer program products, and the like provided above is used for executing the corresponding method provided above, and therefore, the beneficial effects achieved by the apparatuses, the computer storage media, the computer program products, and the like can refer to the beneficial effects in the corresponding method, and are not described herein again.

Drawings

Fig. 1 is a schematic diagram of a communication system architecture according to an embodiment of the present application;

fig. 2 is a schematic hardware structure diagram of a communication device according to an embodiment of the present application;

fig. 3 is a first flowchart of a communication method according to an embodiment of the present application;

fig. 4 is a schematic diagram of frequency domain resources provided in an embodiment of the present application;

fig. 5 is a second flowchart illustrating a communication method according to an embodiment of the present application;

fig. 6 is a flowchart illustrating a communication method according to an embodiment of the present application

Fig. 7 is a first schematic structural diagram of a terminal device according to an embodiment of the present application;

fig. 8 is a schematic structural diagram of a terminal device according to an embodiment of the present application;

fig. 9 is a schematic structural diagram of an access network device according to an embodiment of the present application.

Detailed Description

The technical scheme provided by the application can be applied to various communication systems. The technical scheme provided by the application can be applied to a 4G communication system, an enhanced LTE communication system, a 5G communication system, a future evolution system or a plurality of communication fusion systems and the like, and can also be applied to the existing communication system and the like.

Fig. 1 is a schematic block diagram of a communication system 100 according to an embodiment of the present invention. In fig. 1, a communication system 100 may include one or more access network devices 10 (only 1 shown) and one or more terminal devices 20 connected to each access network device 10. Fig. 1 is a schematic diagram, and does not limit the application scenarios of the technical solutions provided in the present application.

The access network device 10 may be a transmission reception node (TRP), a base station, a relay station, or an access point. The access network device 10 may be an access network device in a 5G communication system or an access network device in a future evolution network, and may also be an eNB or an enodeb (evolved nodeb) in Long Term Evolution (LTE).

The terminal equipment 20 may be User Equipment (UE), an access terminal, a UE unit, a UE station, a mobile station, a remote terminal, a mobile device, a UE terminal, a wireless communication device, a UE agent, a UE device, or the like. An access terminal may be a cellular telephone, a cordless telephone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, a vehicle mounted device, a wearable device, a terminal in a 5G network or a terminal in a future evolved Public Land Mobile Network (PLMN) network, etc.

Optionally, each network element (for example, the access network device 10 and the terminal device 20) in fig. 1 may be implemented by one device, may also be implemented by multiple devices together, and may also be a functional module in one device, which is not specifically limited in this embodiment of the present application. It is understood that the above functions may be either network elements in a hardware device, software functions running on dedicated hardware, or virtualized functions instantiated on a platform (e.g., a cloud platform).

For example, each network element in fig. 1 may be implemented by the communication device 200 in fig. 2. Fig. 2 is a schematic hardware structure diagram of a communication device applicable to an embodiment of the present application. The communication device 200 includes at least one processor 201, communication lines 202, memory 203, and at least one communication interface 204.

The processor 201 may be a general processing unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more ics for controlling the execution of programs in accordance with the present invention.

The communication link 202 may include a path for transmitting information between the aforementioned components.

Communication interface 204 may be any device, such as a transceiver, for communicating with other devices or communication networks, such as an ethernet, RAN, Wireless Local Area Networks (WLAN), etc.

The memory 203 may be a read-only memory (ROM) or other type of static storage device that can store static information and instructions, a Random Access Memory (RAM) or other type of dynamic storage device that can store information and instructions, an electrically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM) or other optical disk storage, optical disk storage (including compact disc, laser disc, optical disc, digital versatile disc, blu-ray disc, etc.), magnetic disk storage media or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer, but is not limited to these. The memory may be separate and coupled to the processor via communication line 202. The memory may also be integral to the processor. The memory provided by the embodiment of the application can be generally nonvolatile. The memory 203 is used for storing computer execution instructions for executing the scheme of the application, and is controlled by the processor 201 to execute. The processor 201 is configured to execute computer-executable instructions stored in the memory 203, thereby implementing the methods provided by the embodiments described below.

Optionally, the computer-executable instructions in the embodiments of the present application may also be referred to as application program codes, which are not specifically limited in the embodiments of the present application.

In particular implementations, processor 201 may include one or more CPUs such as CPU0 and CPU1 in fig. 2, for example, as one embodiment.

In particular implementations, communication device 200 may include multiple processors, such as processor 201 and processor 207 in fig. 2, for example, as an example. Each of these processors may be a single-core (single-CPU) processor or a multi-core (multi-CPU) processor. A processor herein may refer to one or more devices, circuits, and/or processing cores for processing data (e.g., computer program instructions).

In particular implementations, communication device 200 may also include an output device 205 and an input device 206, as one embodiment. The output device 205 is in communication with the processor 201 and may display information in a variety of ways. For example, the output device 205 may be a Liquid Crystal Display (LCD), a Light Emitting Diode (LED) display device, a Cathode Ray Tube (CRT) display device, a projector (projector), or the like. The input device 206 is in communication with the processor 201 and may receive user input in a variety of ways. For example, the input device 206 may be a mouse, a keyboard, a touch screen device, or a sensing device, among others.

The communication device 200 described above may be a general purpose device or a special purpose device. In a specific implementation, the communication device 200 may be a desktop, a laptop, a web server, a Personal Digital Assistant (PDA), a mobile phone, a tablet, a wireless terminal device, an embedded device, or a device with a similar structure as in fig. 2. The embodiment of the present application does not limit the type of the communication device 200.

The communication method provided by the embodiment of the present application will be specifically described below with reference to fig. 1 to 2.

It should be noted that, in the following embodiments of the present application, names of messages between network elements or names of parameters in messages are only an example, and other names may also be used in a specific implementation, which is not specifically limited in this embodiment of the present application.

It is understood that, in the embodiments of the present application, the terminal device and/or the access network device may perform some or all of the steps in the embodiments of the present application, and these steps or operations are merely examples, and the embodiments of the present application may also perform other operations or various modifications of the operations. Further, the various steps may be performed in a different order presented in the embodiments of the application, and not all operations in the embodiments of the application may be performed.

As shown in fig. 3, a communication method provided for the embodiment of the present application includes the following steps:

step 301, the terminal device receives a first cell definition synchronization signal block/physical broadcast channel block CD-SSB sent by the access network device.

It should be noted that the first CD-SSB includes first scheduling information, and the first scheduling information may be used for the terminal device to detect or receive the first system message according to the first scheduling information. The first system message may be SIB 1. For example, the terminal device receives a first CD-SSB sent by the access network device, and reads the MIB according to the first CD-SSB. Further, the terminal device may read the SIB1 according to the scheduling information in the MIB, and the terminal device may camp on and/or access according to the configuration information for camping and initial access in SIB 1.

Step 302, the terminal device receives the first system message according to the first CD-SSB.

It should be noted that the first system message includes the location information of the second CD-SSB. The location information of the second CD-SSB is used to indicate the frequency domain location of the second CD-SSB closest to the frequency domain location of the first CD-SSB, or the location information of the second CD-SSB is used to indicate the frequency domain range where the second CD-SSB does not exist, or the location information of the second CD-SSB is used to indicate the frequency domain range where the second CD-SSB is not provided by the network. Optionally, the second CD-SSB is a CD-SSB of a different network type than the network to which the first CD-SSB belongs.

It should be noted that the network types include PN, NPN, and hybrid networks. The hybrid network refers to a network having both PN and NPN, or a network supporting both PN and NPN services.

As a possible implementation, as shown in fig. 4. In the schematic diagram of the frequency domain resources in fig. 4, a is the frequency domain position of the first CD-SSB, B is the frequency domain position of the CD-SSB with the network type of PN, C is the frequency domain position of the CD-SSB with the network type of NPN, and D is the frequency domain position of the CD-SSB with the network type of hybrid network.

As a possible implementation manner, the first system message corresponding to the first CD-SSB may include the location information of the second CD-SSB. In fig. 4, if the network type of the network to which the first CD-SSB belongs is PN, the terminal device may determine the frequency domain location of C according to the location information of the second CD-SSB, or the location information of the second CD-SSB may indicate that there is no frequency domain range of the second CD-SSB, such as the frequency domain range indicated by location information 1 in the figure; optionally, the terminal device may determine that the network type of C is different from that of the first CD-SSB, for example, may be an NPN or hybrid network. If the network type of the network to which the first CD-SSB belongs is NPN, the terminal device may determine the frequency domain location of B according to the location information of the second CD-SSB, or the frequency domain range where the second CD-SSB does not exist, such as the frequency domain range indicated by location information 2 in the figure; alternatively, the terminal may determine that B is of a different network type than the first CD-SSB, for example, it may be a PN or hybrid network.

For example, if the network type of the network to which the first CD-SSB belongs is PN, the terminal device may determine, according to the network type of the network to which the first CD-SSB belongs, that the network type of the second CD-SSB is a network type that can support a private network service, for example, the network type may be NPN or a hybrid network; if the network type of the network to which the first CD-SSB belongs is NPN, the terminal device may determine, according to the network type of the network to which the first CD-SSB belongs, that the network type of the network to which the second CD-SSB belongs is a network type that can support public network services, such as a PN or a hybrid network.

As another possible implementation manner, the first system message corresponding to the first CD-SSB may include location information of the second CD-SSB and first indication information, where the first indication information is used to indicate a network type of a network to which the first CD-SSB belongs, or the first indication information is used by the terminal device to determine the network type of the network to which the first CD-SSB belongs. The terminal device may determine the network type of the network to which the second CD-SSB belongs according to the network type of the network to which the first CD-SSB belongs, for example, the terminal device determines that the network type different from the network type of the network to which the first CD-SSB belongs is the network type of the network to which the second CD-SSB belongs. If the network type includes a PN and an NPN, the first indication information indicates that the network type of the network to which the first CD-SSB belongs is a PN, or the terminal device determines that the network type of the network to which the first CD-SSB belongs is a PN according to the first indication information, the terminal device may determine that the network type of the network to which the second CD-SSB belongs is an NPN; the first indication information indicates that the network type of the network to which the first CD-SSB belongs is NPN, or the terminal device determines that the network type of the network to which the first CD-SSB belongs is NPN according to the first indication information, and then the terminal device may determine that the network type of the network to which the second CD-SSB belongs is PN.

In one case, the first indication information may include bitmap information or identification information of the network.

If the network type includes PN and NPN, the first indication information may indicate the network type of the network to which the first CD-SSB belongs by 1 bit. If the first indication information is 0, which may indicate that the network type of the network to which the first CD-SSB belongs is PN, the terminal device may determine that the network type of the network to which the second CD-SSB belongs is NPN; or, the first indication information is 1, which may indicate that the network type of the network to which the first CD-SSB belongs is NPN, and the terminal device may determine that the network type of the network to which the second CD-SSB belongs is PN.

Alternatively, the first indication information may also indicate the network type of the network to which the first CD-SSB belongs through identification information of the network. For example, if the first indication information is Public Land Mobile Network (PLMN) 1, the terminal device may determine, according to the first indication information, that the network type of the network to which the first CD-SSB belongs is PN; further, the terminal device may determine that the network type of the network to which the second CD-SSB belongs is a network type that can support a private network service, such as an NPN or hybrid network; if the first indication information is the NPN ID2, the terminal device may determine, according to the first indication information, that the network type of the network to which the first CD-SSB belongs is an NPN, and further, the terminal device may determine that the network type of the network to which the second CD-SSB belongs is a network type that can support public network services, for example, a PN or a hybrid network.

As another possible implementation manner, the first system message corresponding to the first CD-SSB may include location information of the second CD-SSB and second indication information, where the second indication information is used to indicate a network type of a network to which the second CD-SSB belongs, or the second indication information is used by the terminal device to determine the network type of the network to which the second CD-SSB belongs. The second indication information may be used to indicate at least one of PN, NPN, hybrid network. The second indication information may indicate the network type of the network to which the second CD-SSB belongs through a bitmap, or the second indication information may indicate the network type of the network to which the second CD-SSB belongs through identification information of the network. Wherein the identification information of the network is used to distinguish different networks. For example, if there are 3 PN networks, 2 NPN networks, and 2 hybrid networks, the network identifier of each network may be PLMN1, PLMN 2, PLMN 3, NPN ID1, NPN ID2, hybrid network identifier 1, and hybrid network identifier 2, respectively.

By introducing the identification information of the network, the terminal device can further determine the location information of the CD-SSBs of the network types supported by the terminal device, so as to select the most suitable CD-SSB for residence and/or access. For example, the identification information of each network may correspond to a location information, where the location information is used to indicate the frequency domain location of the CD-SSB corresponding to the identification information of the network, or the location information is used to indicate that there is no frequency domain range of the CD-SSB corresponding to the identification information of the network, or the location information is used to indicate that the network does not provide the frequency domain range of the CD-SSB corresponding to the identification information of the network. Optionally, the identification information of the two or more networks may correspond to one piece of location information, that is, the CD-SSB determined according to the location information is shared by the networks corresponding to the identification information of the two or more networks.

Illustratively, if the network type includes a PN, an NPN, and a hybrid network, the second indication information indicates the network type of the network to which the second CD-SSB belongs through the bitmap information, and as shown in table 1, the bitmap information is a corresponding relationship between the network type and the bitmap information. When the second indication information is 00, the network type of the network to which the second CD-SSB belongs is PN; when the second indication information is 01, the network type of the network to which the second CD-SSB belongs is NPN; when the second indication information is 10, it indicates that the network type of the network to which the second CD-SSB belongs is a hybrid network. Those skilled in the art will understand that table 1 is only an example of the correspondence relationship between the bitmap information and the network type, and the bitmap information and the network type may have other forms of correspondence relationship, which is not limited in this application.

TABLE 1

Bit map information	Network type
		00	PN
01	NPN
		10	Hybrid network

As a possible implementation manner, the location information of the second CD-SSB may include location information of two or more CD-SSBs, and the second indication information may include two or more indication information corresponding to the location information of the two or more CD-SSBs.

Illustratively, as shown in table 2, the second indication information may be bitmap information, and the terminal device may determine the network type of the network to which the second CD-SSB belongs according to the bitmap information. Specifically, the location information of the second CD-SSB may include location information 1, location information 2, and location information 3, and the second indication information may include bit map information 00 corresponding to the location information 1, bit map information 01 corresponding to the location information 2, and bit map information 10 corresponding to the location information 3. If the network type supported by the terminal device is PN, the terminal device may determine the frequency domain location of the CD-SSB corresponding to the location information 1, and reside and/or access on the CD-SSB; if the network type supported by the terminal device is NPN, the terminal device may determine the frequency domain location of the CD-SSB corresponding to the location information 2, and reside and/or access on the CD-SSB; if the network type supported by the terminal device is a hybrid network, the terminal device may determine the frequency domain location of the CD-SSB corresponding to the location information 3, and camp on and/or access the CD-SSB. Those skilled in the art will appreciate that table 2 is only an example of the location information and the second indication information of the second CD-SSB, and the location information and the second indication information of the second CD-SSB may have other expressions, which is not limited in this application.

TABLE 2

Location information of the second CD-SSB	Second indication information (bit map information)
		Location information 1	00
Location information 2	01
		Position information 3	10

Illustratively, as shown in table 3, the second indication information may be identification information of a network, and the terminal device may determine the network type of the network to which the second CD-SSB belongs according to the identification information of the network. Specifically, the location information of the second CD-SSB may include location information 1, location information 2, location information 3, and location information 4, and the second indication information may include identification information NPN ID1 of a network corresponding to the location information 1, identification information NPN ID2 and NPN ID3 of a network corresponding to the location information 2, identification information PLMN ID1 of a network corresponding to the location information 3, and network identification information hybrid network identification 1 corresponding to the location information 4. Those skilled in the art will appreciate that table 3 is only an example of the location information and the second indication information of the second CD-SSB, and the location information and the second indication information of the second CD-SSB may have other expressions, which is not limited in the present application.

TABLE 3

If the terminal device only supports the private network type of the NPN ID2, the terminal device may determine the frequency domain location of the CD-SSB corresponding to the NPN ID2 according to the location information 2, and reside and/or access on the CD-SSB.

Optionally, in step 303, the terminal device determines the frequency domain location of the CD-SSB suitable for the terminal device according to the location information of the second CD-SSB.

Specifically, the terminal device determines a frequency domain location of a CD-SSB suitable for the terminal device, where the CD-SSB may reside and/or be accessed.

It should be noted that, if the network type of the network to which the first CD-SSB belongs is the network type supported by the terminal device, the terminal device may perform the camping and/or accessing according to the first system message without performing step 303. For example, if the network type supported by the terminal device is a PN and the network type of the network to which the first CD-SSB belongs is also a PN, the terminal device may perform camping and/or accessing according to the first system message. Specifically, the terminal device receives a first CD-SSB sent by the access network device, and reads the MIB according to the first CD-SSB. Further, the terminal device may read the SIB1 according to the scheduling information in the MIB, and the terminal device may perform camping and/or accessing according to the configuration information for camping and initial accessing in the SIB 1.

It should be noted that, if the terminal device detects that the network type of the network to which the first CD-SSB belongs is not supported, or the terminal device detects that the network type of the network to which the first CD-SSB belongs has a low priority, or the terminal device detects that a service supported by other network types is initiated, the terminal device may determine the network type required by the terminal device and the location information of the corresponding CD-SSB according to the first system message.

Further, as shown in fig. 5, before step 301, step 300 is further included.

Step 300, the terminal device receives a first non-cell-defined synchronization signal block/physical broadcast channel block NCD-SSB sent by the access network device.

And the terminal equipment determines the frequency domain position of the first CD-SSB according to the position information of the first CD-SSB in the first NCD-SSB. Specifically, the MIB in the first NCD-SSB includes location information of the first CD-SSB, where the location information of the first CD-SSB is used to indicate a frequency domain location of a CD-SSB closest to the frequency domain location of the first NCD-SSB, or the location information of the first CD-SSB is used to indicate a frequency domain range where no CD-SSB exists, or the location information of the first CD-SSB is used to indicate a frequency domain range where no CD-SSB is provided by the network. Optionally, the network type of the network to which the first NCD-SSB belongs is the same as the network type of the network to which the first CD-SSB belongs.

For example, if the network type of the network to which the first NCD-SSB belongs is a PN, the terminal device may determine, according to the network type of the network to which the first NCD-SSB belongs, that the network type of the network to which the first CD-SSB belongs may be a PN; if the network type of the network to which the first NCD-SSB belongs is NPN, the terminal device may determine, according to the network type of the network to which the first NCD-SSB belongs, that the network type of the network to which the first CD-SSB belongs is NPN; if the network type of the network to which the first NCD-SSB belongs is the hybrid network, the terminal device may determine that the network type of the network to which the first CD-SSB belongs is the hybrid network according to the network type of the network to which the first NCD-SSB belongs.

As another possible implementation manner, the MIB in the first NCD-SSB may further include third indication information, where the third indication information is used to indicate a network type of a network to which the first NCD-SSB belongs or a network type of a network to which the first CD-SSB belongs. The third indication information may include bitmap information or identification information of the network. Specifically, reference may be made to the description of the first indication information and/or the second indication information in this embodiment, which is not described herein again.

For a hybrid network scenario, as shown in fig. 6, for another communication method provided in this embodiment, an access network device may configure NPN-dedicated random access configuration information for an NPN random access procedure. Through the embodiment, the access network equipment configures the NPN dedicated random access configuration information for the NPN service, so that the conflict between the NPN random access flow and the PN random access flow can be avoided, or the time delay of the NPN random access flow is shortened, and the success rate of the NPN random access is further improved.

Step 601, the terminal device receives the NPN dedicated random access configuration information sent by the access network device.

The NPN-specific random access configuration information may include, but is not limited to, at least one of: time-frequency resource (e.g., Physical Random Access Channel (PRACH) resource) information for transmitting the preamble, preamble index (index) information, indication information of a root sequence, maximum transmission number information of the preamble, indication information of a reception window for a response of message 1 (MSG 1), indication information of a power ramp-up step of the preamble, indication information of a subcarrier interval of the preamble, scaling factor (scaling factor) indication information of a backoff indication (backoff indication). The time frequency resource information used for sending the lead code is used for indicating the time frequency resource for sending the lead code; the lead code index information is used for allocating lead code resources; the indication information of the root sequence is used for generating a preamble; the maximum transmission number information of the preamble is used for indicating the maximum transmission number of the preamble; the indication information of the reception window for the response of the MSG1 is used to indicate the reception window for the response of the preamble; the indication information of the power climbing step of the lead code is used for indicating the power climbing step of the lead code; the indication information of the subcarrier interval of the preamble is used for indicating the subcarrier interval of the preamble; and the scaling factor indication information of the backoff indication is used for indicating the determined delay time before the terminal equipment initiates the preamble retransmission when the random access is not completed.

For example, assume that the terminal device determines the delay time to be 200 milliseconds (ms) according to the backoff indicator of the network, the scaling factor indicator of the backoff indicator dedicated to the NPN is 0.25, and the scaling factor indicator of the backoff indicator of the PN is 0.75, and when the terminal device initiates the NPN service, a value a may be randomly selected from a time range between 0ms and 200ms × 0.25, and then the terminal device determines the delay time to be a, thereby shortening the time delay of the random access procedure of the NPN.

Optionally, the NPN dedicated random access configuration information may further include NPN identification information. For example, the NPN identification information is an NPN ID1, indicating that the terminal device receives NPN-specific random access configuration information whose network identification is an NPN ID 1.

Step 602, the terminal device determines corresponding NPN dedicated random access configuration information according to the initiated NPN service, and initiates a random access procedure.

For example, the terminal device initiates an NPN service corresponding to the NPN ID1, and the terminal device determines the NPN-dedicated random access configuration information corresponding to the NPN ID1 from the NPN-dedicated random access configuration information and initiates random access according to the random access configuration information.

The above-mentioned scheme provided by the embodiment of the present application is introduced mainly from the perspective of interaction between network elements. It is to be understood that, in order to implement the above functions, the terminal device or the access network device and the like include a hardware structure and/or a software module corresponding to the execution of each function. Those of skill in the art would readily appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as hardware or combinations of hardware and computer software. Whether a function is performed as hardware or computer software drives hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

In the embodiment of the present application, the terminal device or the access network device may be divided into the functional modules according to the above method examples, for example, each functional module may be divided corresponding to each function, or two or more functions may be integrated into one processing module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. It should be noted that, in the embodiment of the present application, the division of the module is schematic, and is only one logic function division, and there may be another division manner in actual implementation.

For example, in the case where the functional modules are divided in an integrated manner, fig. 7 shows a schematic configuration diagram of the terminal device 70. The terminal device 70 includes: a receiving module 701 and a determining module 702. A receiving module 701, configured to receive, by a terminal device, a first cell definition synchronization signal block/physical broadcast channel block CD-SSB sent by an access network device; the receiving module 701: the terminal equipment is also used for receiving a first system message according to the first CD-SSB, wherein the first system message comprises the position information of a second CD-SSB, and the second CD-SSB is a CD-SSB which is different from the network type of the network to which the first CD-SSB belongs; the determination module 702: and the terminal equipment determines the frequency domain position of the CD-SSB suitable for the terminal equipment according to the position information of the second CD-SSB.

Optionally, the location information of the second CD-SSB is used to indicate a frequency domain location of the second CD-SSB closest to the frequency domain location of the first CD-SSB.

Optionally, the first system message further includes first indication information or second indication information, where the first indication information is used to indicate a network type of a network to which the first CD-SSB belongs, or the first indication information is used by the terminal device to determine the network type of the network to which the first CD-SSB belongs, and the second indication information is used to indicate a network type of a network to which the second CD-SSB belongs, or the second indication information is used by the terminal device to determine the network type of the network to which the second CD-SSB belongs.

Optionally, the first indication information includes bitmap information or identification information of a network; or, the second indication information includes bitmap information or identification information of the network.

Optionally, the network types include public networks, non-public networks, and hybrid networks.

Optionally, the receiving module 701: the method is also used for receiving a first non-cell-defined synchronization signal block/physical broadcast channel block (NCD-SSB) sent by the access network equipment by the terminal equipment, wherein the first NCD-SSB comprises the position information of the first CD-SSB.

Optionally, the first NCD-SSB includes third indication information, where the third indication information is used to indicate a network type of a network to which the first NCD-SSB belongs or a network type of a network to which the first CD-SSB belongs.

Optionally, as shown in fig. 8, the terminal device 70 further includes a detecting module 703, where the detecting module 703 is configured to detect that the network type of the network to which the first CD-SSB belongs is not supported, or the terminal device detects that the network type of the network to which the first CD-SSB belongs has a low priority, or the terminal device detects that a service supported by another network type is initiated.

All relevant contents of each step related to the above method embodiment may be referred to the functional description of the corresponding functional module, and are not described herein again.

In the present embodiment, the terminal device 70 is presented in a form of dividing each functional module in an integrated manner. A "module" herein may refer to a particular ASIC, a circuit, a processor and memory that execute one or more software or firmware programs, an integrated logic circuit, and/or other device that provides the described functionality. In a simple embodiment, those skilled in the art will appreciate that the terminal device 70 may take the form shown in FIG. 2.

For example, the processor 201 in fig. 2 may execute the instructions by calling a computer stored in the memory 203, so that the terminal device 70 executes the communication method in the above-described method embodiment.

Illustratively, the functions/implementation procedures of the receiving module 701, the determining module 702, and the detecting module 703 in fig. 8 may be implemented by the processor 201 in fig. 2 calling a computer executing instructions stored in the memory 203. Alternatively, the functions/implementation procedures of the determining module 702 and the detecting module 703 in fig. 8 may be implemented by the processor 201 in fig. 2 calling a computer executing instruction stored in the memory 203, and the functions/implementation procedures of the receiving module 701 in fig. 8 may be implemented by the communication interface 204 in fig. 2.

Since the terminal device 70 provided in this embodiment can execute the above-mentioned communication method, the technical effects obtained by the terminal device 70 can refer to the above-mentioned method embodiment, and are not described herein again.

Optionally, an apparatus (for example, the apparatus may be a system on a chip) is further provided in an embodiment of the present application, where the apparatus includes a processor, configured to support a terminal device to implement the foregoing communication method, for example, the terminal device receives a first cell definition synchronization signal block/physical broadcast channel block CD-SSB sent by an access network device; the terminal equipment receives a first system message according to the first CD-SSB; and the terminal equipment receives the CD-SSB of the network type supported by the terminal equipment, which is sent by the access network equipment according to the first system message. In one possible design, the apparatus further includes a memory. The memory is used for storing program instructions and data necessary for the terminal equipment. Of course, the memory may not be in the device. When the device is a chip system, the device may be composed of a chip, and may also include a chip and other discrete devices, which is not specifically limited in this application embodiment.

Alternatively, for example, in the case that the functional modules are divided in an integrated manner, fig. 9 shows a schematic structural diagram of the access network device 90. The access network device 90 includes: a sending module 901. A sending module 901: the access network equipment is used for sending a first CD-SSB to the terminal equipment; a sending module 901: the access network equipment is further used for sending a first system message to the terminal equipment, wherein the first system message comprises the position information of a second CD-SSB, and the second CD-SSB is a CD-SSB with a network type different from that of the network to which the first CD-SSB belongs; the sending module 901 is further configured to send, by the access network device, a CD-SSB suitable for the terminal device to the terminal device.

Optionally, the sending module 901: and the access network equipment is also used for sending the first NCD-SSB to the terminal equipment, wherein the first NCD-SSB comprises the position information of the first CD-SSB.

In the present embodiment, the access network device 90 is presented in a form of dividing each functional module in an integrated manner. A "module" herein may refer to a particular ASIC, a circuit, a processor and memory that execute one or more software or firmware programs, an integrated logic circuit, and/or other device that provides the described functionality. In a simple embodiment, those skilled in the art will appreciate that the access network device 90 may take the form shown in FIG. 2.

For example, the processor 201 in fig. 2 may execute the instructions by invoking a computer stored in the memory 203, so that the access network device 90 executes the communication method in the above method embodiment.

Illustratively, the functions/implementation procedures of the sending module 901 in fig. 9 may be implemented by the processor 201 in fig. 2 calling a computer executing instruction stored in the memory 203. Alternatively, the function/implementation procedure of the sending module 901 in fig. 9 may be implemented by the communication interface 204 in fig. 2.

Since the access network device 90 provided in this embodiment can execute the above-mentioned communication method, the technical effect obtained by the access network device can refer to the above-mentioned method embodiment, and is not described herein again.

Optionally, an apparatus (for example, the apparatus may be a system on a chip) is further provided in this embodiment of the present application, where the apparatus includes a processor, configured to support the access network device 90 to implement the foregoing communication method, for example, the access network device sends the first CD-SSB to the terminal device; the access network equipment sends a first system message to the terminal equipment, and the access network equipment sends the CD-SSB of the network type supported by the terminal equipment to the terminal equipment. In one possible design, the apparatus further includes a memory. The memory is used for storing program instructions and data necessary for the access network equipment. Of course, the memory may not be in the device. When the device is a chip system, the device may be composed of a chip, and may also include a chip and other discrete devices, which is not specifically limited in this application embodiment.

In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented using a software program, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. The procedures or functions described in accordance with the embodiments of the present application are generated in whole or in part when the computer program instructions are loaded and executed on a computer. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored on a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, from one website, computer, server, or data center to another website, computer, server, or data center via wire (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or can comprise one or more data storage devices, such as a server, a data center, etc., that can be integrated with the medium. The usable medium may be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., Solid State Disk (SSD)), among others.

While the present application has been described in connection with various embodiments, other variations to the disclosed embodiments can be understood and effected by those skilled in the art in practicing the claimed application, from a review of the drawings, the disclosure, and the appended claims. In the claims, the word "comprising" does not exclude other elements or steps, and the word "a" or "an" does not exclude a plurality. A single processor or other unit may fulfill the functions of several items recited in the claims. The mere fact that certain measures are recited in mutually different dependent claims does not indicate that a combination of these measures cannot be used to advantage.

Although the present application has been described in conjunction with specific features and embodiments thereof, it will be evident that various modifications and combinations can be made thereto without departing from the spirit and scope of the application. Accordingly, the specification and figures are merely exemplary of the present application as defined in the appended claims and are intended to cover any and all modifications, variations, combinations, or equivalents within the scope of the present application. It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims

1. A method of communication, the method comprising:

the terminal equipment receives a first cell definition synchronous signal block/physical broadcast channel block CD-SSB sent by access network equipment;

the terminal equipment receives a first system message according to the first CD-SSB, wherein the first system message comprises the position information of a second CD-SSB, the second CD-SSB is a CD-SSB which is different from the network type of the network to which the first CD-SSB belongs, and the network type comprises a public network, a non-public network and a mixed network;

the terminal equipment determines the frequency domain position of the CD-SSB suitable for the terminal equipment according to the position information of the second CD-SSB;

the first system message further includes first indication information or second indication information, where the first indication information is used to indicate a network type of a network to which the first CD-SSB belongs, or the first indication information is used by the terminal device to determine the network type of the network to which the first CD-SSB belongs, and the second indication information is used to indicate a network type of a network to which the second CD-SSB belongs, or the second indication information is used by the terminal device to determine the network type of the network to which the second CD-SSB belongs.

2. The communication method according to claim 1, wherein the location information of the second CD-SSB is used to indicate the frequency domain location of the second CD-SSB closest to the frequency domain location of the first CD-SSB.

3. The communication method according to claim 1 or 2, wherein the first indication information includes bitmap information or identification information of a network; or, the second indication information includes bitmap information or identification information of the network.

4. The communication method according to claim 1 or 2, wherein before the terminal device receives the first CD-SSB sent by the access network device, the method further comprises:

and the terminal equipment receives a first non-cell-defined synchronization signal block/physical broadcast channel block (NCD-SSB) sent by the access network equipment, wherein the first NCD-SSB comprises the position information of the first CD-SSB.

5. The communication method according to claim 4, wherein the first NCD-SSB further comprises third indication information indicating a network type of a network to which the first NCD-SSB belongs or a network type of a network to which the first CD-SSB belongs.

6. The communication method according to claim 1, 2 or 5, wherein before the terminal device receives the CD-SSB of the network type supported by the terminal device sent by the access network device according to the first system message, the method further comprises:

the terminal device detects that the network type of the network to which the first CD-SSB belongs is not supported, or the terminal device detects that the network type of the network to which the first CD-SSB belongs has low priority, or the terminal device detects that the service supported by other network types is initiated.

7. A method of communication, the method comprising:

the access network equipment sends a first CD-SSB to the terminal equipment;

the access network equipment sends a first system message to the terminal equipment, wherein the first system message comprises the position information of a second CD-SSB, the second CD-SSB is a CD-SSB which is different from the network type of the network to which the first CD-SSB belongs, and the network type comprises a public network, a non-public network and a mixed network;

the access network equipment sends the CD-SSB suitable for the terminal equipment to the terminal equipment;

8. The communication method according to claim 7, wherein before the access network device sends the first CD-SSB to the terminal device, the method further comprises:

and the access network equipment sends a first NCD-SSB to the terminal equipment, wherein the first NCD-SSB comprises the position information of the first CD-SSB.

9. The communication method according to claim 7 or 8, wherein the first NCD-SSB further comprises third indication information indicating a network type of a network to which the first NCD-SSB belongs or a network type of a network to which the first CD-SSB belongs.

10. A terminal device, characterized in that the terminal device comprises: a receiving module and a determining module;

the receiving module: the terminal equipment receives a first cell definition synchronization signal block/physical broadcast channel block CD-SSB sent by the access network equipment;

the receiving module: the terminal equipment is also used for receiving a first system message according to the first CD-SSB, wherein the first system message comprises the position information of a second CD-SSB, the second CD-SSB is a CD-SSB which is different from the network type of the network to which the first CD-SSB belongs, and the network type comprises a public network, a non-public network and a mixed network;

the determination module: the terminal equipment determines the frequency domain position of the CD-SSB suitable for the terminal equipment according to the position information of the second CD-SSB;

11. The terminal device of claim 10, wherein the location information of the second CD-SSB is used to indicate a frequency domain location of the second CD-SSB closest to the frequency domain location of the first CD-SSB.

12. The terminal device according to claim 10 or 11,

the receiving module: the terminal device is further configured to receive a first non-cell-defined synchronization signal block/physical broadcast channel block, NCD-SSB, sent by the access network device, where the first NCD-SSB includes location information of the first CD-SSB.

13. The terminal device of claim 12, wherein the first NCD-SSB further comprises third indication information, and wherein the third indication information is used to indicate a network type of a network to which the first NCD-SSB belongs or a network type of a network to which the first CD-SSB belongs.

14. The terminal device according to claim 10, 11 or 13, characterized in that the terminal device further comprises a detection module;

the detection module is configured to detect, by the terminal device, a network type that does not support a network to which the first CD-SSB belongs, or detect, by the terminal device, that a network type of the network to which the first CD-SSB belongs is low in priority, or detect, by the terminal device, that a service supported by another network type is initiated.

15. An access network device, characterized in that the access network device comprises: a sending module;

the sending module: the access network equipment is used for sending a first CD-SSB to the terminal equipment;

the sending module: the access network device is further configured to send a first system message to the terminal device, where the first system message includes location information of a second CD-SSB, where the second CD-SSB is a CD-SSB of a different network type from a network to which the first CD-SSB belongs, and the network types include a public network, a non-public network, and a hybrid network;

the sending module is further configured to send, by the access network device, a CD-SSB suitable for the terminal device to the terminal device;

16. The access network device of claim 15,

the sending module: and the access network equipment is further used for sending a first NCD-SSB to the terminal equipment, wherein the first NCD-SSB comprises the position information of the first CD-SSB.

17. The access network device of claim 16, wherein the first NCD-SSB further comprises third indication information indicating a network type of a network to which the first NCD-SSB belongs or a network type of a network to which the first CD-SSB belongs.

18. A terminal device, comprising: at least one processor, at least one memory, and a communication interface,

the communication interface, the at least one memory, and the at least one processor are coupled; the terminal device communicates with other devices through the communication interface, the at least one memory for storing a computer program such that the computer program, when executed by the at least one processor, implements the communication method of any one of claims 1-6.

19. An access network device, comprising: at least one processor, at least one memory, and a communication interface,

the communication interface, the at least one memory, and the at least one processor are coupled; the access network device communicating with other devices through the communication interface, the at least one memory for storing a computer program such that the computer program when executed by the at least one processor implements the communication method of any one of claims 7-9.

20. A computer-readable storage medium, characterized by comprising a computer program which, when run on at least one storage node, executes the communication method of any one of claims 1-6 or the communication method of any one of claims 7-9.