WO2021087921A1

WO2021087921A1 - Communication method, apparatus and system

Info

Publication number: WO2021087921A1
Application number: PCT/CN2019/116415
Authority: WO
Inventors: 耿婷婷; 吴烨丹; 严乐
Original assignee: 华为技术有限公司
Priority date: 2019-11-07
Filing date: 2019-11-07
Publication date: 2021-05-14

Abstract

Provided are a communication method, apparatus and system. The method comprises: receiving first information of a first cell and at least one network identifier of the first cell, wherein the first information is used for indicating a first network identifier, which is used for determining the validity of system information, of the at least one network identifier of the first cell, and the system information comprises regional system information and cell system information; and according to the first network identifier, determining the validity of first system information, which is stored in a terminal device, of a second cell. On the basis of the solution, first information indicates a network identifier for determining the validity of system information, such that the network identifier for determining the validity of the system information can be flexibly determined, thereby improving the flexibility of system information validity determination.

Description

Communication method, device and system

Technical field

This application relates to the field of mobile communication technology, in particular to communication methods, devices and systems.

Background technique

Generally, the terminal device needs to read the system information of its current cell, and the system information is generally at the cell level. When a terminal device moves from one cell to another cell, the terminal device needs to read the system information of the new cell in the new cell, which will bring about a certain amount of energy consumption of the terminal device. Therefore, regional system information is currently introduced, that is, the system information read by a terminal device in a cell in an area can be applied to other cells in the area.

After the regional system information is introduced, the validity of the stored regional system information needs to be judged. Only when it is determined that the stored regional system information is valid, the regional system information can be used without the need to re-receive system information from a new cell.

There is still no good method for how to flexibly judge the validity of system information.

Summary of the invention

The present application provides a communication method, device and system, which are used to flexibly determine the network identity used for judging the validity of the system information, and thus can realize the flexibly judging the validity of the system information.

In a first aspect, the present application provides a communication method. The method includes: receiving first information of a first cell and at least one network identifier of the first cell, where the first information is used to indicate the information of the first cell The first network identifier in the at least one network identifier is used to determine the validity of system information, and the system information includes regional system information or cell system information; and the second network identifier stored in the terminal device is determined according to the first network identifier. The validity of the first system information of the cell.

Based on the above solution, the first information indicates the network identity used for judging the validity of the system information, so that the network identity used for judging the validity of the system information can be flexibly determined, and the validity and flexibility of judging the system information can be improved. .

In some possible implementation methods, the first information is first indication information; or, the first information is a first system information area identifier, and the first system information area identifier is also used to validate the area system information. Sexual judgment. Based on this solution, when the first information is the first indication information, overhead can be saved. When the first information is the first system information area identifier, the validity and flexibility of judging the system information can be improved.

In some possible implementation methods, the first network identifier is a public network identifier or a private network identifier, and the private network identifier includes an independent private network identifier or a closed access networking identifier.

In some possible implementation methods, determining the first network identity in the at least one network identity of the first cell; judging the validity of the first system information in the terminal device according to the first network identity includes: Determine the validity of the first system information according to the first network identifier or the first network identifier in the at least one network identifier. Based on this solution, the first information can be used to indicate the network identity used for judging the validity of the system information, and the first network identity can also be specified in a predefined manner to be the network identity used for judging the validity of the system information. Therefore, the instruction cost can be saved, and the flexibility of the instruction can be improved.

In some possible implementation methods, before receiving the first information of the first cell and at least one network identity, the method further includes: receiving at least one network identity of the second cell, the first system information, and the second information, so The second information is used to indicate that the second network identifier in the at least one network identifier of the second cell is used to determine the validity of system information; according to the first network identifier, determine the status of the first system information in the terminal device The validity includes: judging the validity of the first system information according to the first network identification and the second network identification; or, according to the first network identification and the target network of the at least one network identification An identifier is used to determine the validity of the first system information, and the target network identifier is the second network identifier or the first network identifier among at least one network identifier of the second cell.

In some possible implementation methods, the second information is the second indication information; or, the second information is the second system information area identifier, and the second system information area identifier is also used for the validity of the area system information judgment.

In some possible implementation methods, before the UE receives the first information of the first cell and the at least one network identity, the method further includes: receiving at least one network identity of the second cell and the first system information; and determining the first system information. The first network identity in the at least one network identity of the second cell; judging the validity of the first system information in the terminal device according to the first network identity includes: according to the first network identity and the second network identity The first network identifier in the at least one network identifier of the cell determines the validity of the first system information.

In a second aspect, the present application provides a communication method, the method comprising: generating first information, the first information being used to indicate that the first network identifier in the at least one network identifier of the first cell is used for the validity of the system information It is determined that the system information includes area system information or cell system information; and the first information and the at least one network identifier of the first cell are sent to a terminal device.

In some possible implementation methods, the first information is the first indication information; or, the first information is the first system information area identifier, and the first system information area identifier is also used for the validity of the area system information judgment. Based on this solution, when the first information is the first indication information, overhead can be saved. When the first information is the first system information area identifier, the validity and flexibility of judging the system information can be improved.

In some possible implementation methods, the first network identifier is a public network identifier or a private network identifier, and the private network identifier includes an independent private network identifier or a closed access network identifier.

In a third aspect, this application provides a communication device, which may be a terminal device or a chip for the terminal device. The device has the function of realizing the above-mentioned first aspect or each embodiment of the first aspect. This function can be realized by hardware, or by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above-mentioned functions.

In a fourth aspect, the present application provides a communication device, which may be a network device or a chip for the network device. The device has the function of realizing the above-mentioned second aspect or each embodiment of the second aspect. This function can be realized by hardware, or by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above-mentioned functions.

In a fifth aspect, the present application provides a communication device including a processor and a memory; the memory is used to store computer-executable instructions. When the device is running, the processor executes the computer-executable instructions stored in the memory to make the device Perform the method as described above in each aspect or each embodiment of each aspect.

In a sixth aspect, the present application provides a communication device, which includes units or means for executing the above aspects or steps in each aspect.

In a seventh aspect, the present application provides a communication device including a processor and an interface circuit, where the processor is configured to communicate with other devices through the interface circuit and execute the methods of the above aspects or the embodiments of the aspects. The processor includes one or more.

In an eighth aspect, the present application provides a communication device, including a processor, configured to be connected to a memory, and configured to call a program stored in the memory to execute the methods of the above aspects or the embodiments of the aspects. The memory can be located inside the device or outside the device. And the processor includes one or more.

In a ninth aspect, this application also provides a computer-readable storage medium having instructions stored in the computer-readable storage medium, which when run on a computer, cause a processor to execute the above aspects or embodiments of each aspect The method described.

In a tenth aspect, the present application also provides a computer program product including instructions, which when run on a computer, causes the computer to execute the methods described in the above aspects or the embodiments of the aspects.

In an eleventh aspect, the present application also provides a chip system, including a processor, configured to execute the methods described in the foregoing aspects or the embodiments of the aspects.

In the twelfth aspect, this application also provides a communication system including terminal equipment and network equipment. The network device is configured to generate first information, where the first information is used to indicate that the first network identifier in the at least one network identifier of the first cell is used to determine the validity of system information, and the system information includes the area system Information or cell system information; sending the first information and the at least one network identifier of the first cell to the terminal device. The terminal device is configured to receive the first information of the first cell and at least one network identity of the first cell; and, according to the first network identity, determine the first information stored in the terminal device The validity of the first system information of the second cell.

In a thirteenth aspect, this application also provides a communication method, including: a network device generates first information, where the first information is used to indicate that the first network identifier in the at least one network identifier of the first cell is used for system information For validity judgment, the system information includes area system information or cell system information; the network device sends the first information and the at least one network identifier of the first cell to a terminal device. The terminal device receives the first information of the first cell and at least one network identity of the first cell; the terminal device determines the second information stored in the terminal device according to the first network identity The validity of the first system information of the cell.

Description of the drawings

Figure 1 is a schematic diagram of a 5G network architecture based on a service-oriented architecture;

Fig. 2 is a schematic flow diagram of a communication method provided by this application;

FIG. 3 is a schematic diagram of a communication device provided by this application;

FIG. 4 is a schematic diagram of another communication device provided by this application;

Figure 5 is a schematic diagram of a terminal device provided by this application;

Fig. 6 is a schematic diagram of a network device provided by this application.

Detailed ways

In the embodiments of the present application, the terminal device and/or the network device may perform some or all of the steps in the embodiments of the present application. These steps or operations are only examples, and the embodiments of the present application may also perform other operations or variations of various operations. In addition, each step may be executed in a different order presented in the embodiment of the present application, and it may not be necessary to perform all the operations in the embodiment of the present application. In the various embodiments of this application, if there are no special instructions and logical conflicts, the terms and/or descriptions between different embodiments are consistent and can be mutually cited. The technical features in different embodiments are based on their inherent Logical relationships can be combined to form new embodiments.

As shown in Figure 1, it is a schematic diagram of a network architecture to which this application applies, including terminal equipment and network equipment. The terminal device communicates with the network device through a wireless interface.

The terminal device can be a wireless terminal device that can receive network device scheduling and instruction information. The wireless terminal device can be a device that provides voice and/or data connectivity to the user, or a handheld device with wireless connection function, or connected to a wireless modem Other processing equipment. A wireless terminal device can communicate with one or more core networks or the Internet via a wireless access network (e.g., radio access network, RAN). The wireless terminal device can be a mobile terminal device, such as a mobile phone (or called a "cellular" phone). , Mobile phones), computers, and data cards, for example, may be portable, pocket-sized, handheld, computer-built or vehicle-mounted mobile devices, and they exchange language and/or data with the wireless access network. For example, personal communication service (PCS) phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants (PDAs), tablets Computers (Pad), computers with wireless transceiver functions and other equipment. Wireless terminal equipment can also be called system, subscriber unit, subscriber station, mobile station, mobile station (MS), remote station (remote station), access point ( access point (AP), remote terminal equipment (remote terminal), access terminal equipment (access terminal), user terminal equipment (user terminal), user agent (user agent), subscriber station (SS), user terminal equipment (customer premises equipment, CPE), terminal (terminal), user equipment (user equipment, UE), mobile terminal (mobile terminal, MT), etc. The terminal device can also be a wearable device and a next-generation communication system, for example, a terminal device in a 5G network or a terminal device in a public land mobile network (PLMN) network that will evolve in the future, a new radio (new radio, NR) Terminal equipment in the communication system, etc. For ease of description, this application will be described later by taking the terminal device as the UE as an example.

A network device is an entity used to transmit or receive signals on the network side, such as a generation NodeB (gNodeB). The network device may be a device used to communicate with mobile devices. Network equipment can be APs in wireless local area networks (WLAN), base transceivers in global system for mobile communication (GSM) or code division multiple access (CDMA) station, BTS), it can also be a base station (NodeB, NB) in wideband code division multiple access (WCDMA), or an evolutional base station (evolutional base station) in long-term evolution (LTE). Node B, eNB or eNodeB), or relay station or access point, or in-vehicle equipment, wearable equipment, and network equipment in the future 5G network or the network in the future evolved public land mobile network (PLMN) network Equipment, or gNodeB in the NR system, etc. In addition, in the embodiments of the present application, the network equipment provides services for the cell, and the terminal equipment communicates with the network equipment through the transmission resources (for example, frequency domain resources, or spectrum resources) used by the cell. The cell may be a network equipment. (E.g. base station) The corresponding cell, the cell can belong to a macro base station or a base station corresponding to a small cell. The small cell here can include: Metro cell, Micro cell, and Pico cell. (Pico cell), femto cell (Femto cell), etc., these small cells have the characteristics of small coverage and low transmit power, and are suitable for providing high-rate data transmission services. In addition, in other possible situations, the network device may be another device that provides wireless communication functions for the terminal device. The embodiment of the present application does not limit the specific technology and specific device form adopted by the network device. For ease of description, in the embodiments of the present application, devices that provide wireless communication functions for terminal devices are collectively referred to as network devices.

In order to facilitate the understanding of the solution of the present application, the relevant background technology is first introduced and explained below.

1. Non-public network (NPN)

NPN can also be called a private network (private network). The concept of private network is proposed in the development of communication. Private network is a concept relative to public network (PN) (public network for short), which can be understood as a private network, such as an internal network built by a company, school, or factory. UEs that have not signed a contract with the private network are not allowed to access the private network. The UE can only camp on or access to the NPN it supports to initiate services.

Private networks can include standalone non-public network identifiers (SNPN) and public network integrated NPNs (PNI-NPN). The PNI-NPN may include a closed access group (CAG) network or other forms of private networks.

Generally, the private network type can be identified by the private network identifier (NPN Identifier, NPN ID). Corresponding to the private network type, the private network identifier may include at least one of SNPN ID (or NID), PNI-NPN ID, and CAG ID. Generally, a private network identifier can be uniquely identified based on PLMN ID+NPN ID. The UE determines whether the UE can access in the private network cell according to the NPN ID sent by the cell and the subscription information of the UE. It is understandable that the private network identifier corresponding to the SNPN network is generally PLMN ID+SNPN ID; for the private network identifier of the CAG network, it can only be PLMN ID+CAG ID, or PLMN ID.

Relative to the concept of a private network, a general network can be called a public network, and the public network identifier can be a PLMN ID or a PN PLMN ID.

Combined with the network type and protocol version, the following types of UEs may exist in the network of R16 or future versions (such as R17, R18, etc.):

1) PN UE: UE that only supports public network services.

2) CAG-only UE: only supports the UE of CAG private network.

3) CAG+PN UE: UE supporting public network and CAG private network.

4) SNPN UE: Only support SNPN private network UE, UE generally needs to enable "SNPN access mode".

Among them, NPN UE is a UE that supports a private network, and may include at least one of CAG-only UE, CAG+PN UE, and SNPN UE.

It should be noted that for R15 UE (ie, R15 PN UE), it is assumed in the embodiment of this application that it cannot identify any R16 and subsequent versions of network information elements, including R16 and subsequent versions of private network information and other information.

For R16 and subsequent versions of UE (such as CAG-only UE, PN UE, CAG+PN UE, SNPN UE), R15, R16 and subsequent versions of public network information, private network information, and other information can be identified. For example, R16 PN UE, R16 CAG-only UE, R16 CAG+PN UE, R16 SNPN UE can identify PN ID, NPN ID, etc. For example, R16 PN UE, R16 CAG-only UE, R16 CAG+PN UE, R16 SNPN UE can identify PLMN ID, PLMN ID+CAG ID, PLMN ID+SNPN ID, and so on.

It is understandable that, as an example, R15 UE and R16 UE are used as examples for description in this embodiment of the present application.

2. Validity of system information

Generally, the UE needs to read the system information of its current cell, and the system information is generally cell-level (ie, cell system information). In order to avoid unnecessary energy consumption, the UE will store system information for a period of time. When the UE moves to a new cell, the UE determines whether the stored system information is valid. If the system information is cell system information, the UE can compare the network ID, cell ID, and tag values of the system information of the new cell with the stored network ID, stored cell ID, and tag values of the stored system information to determine Whether the stored system information is valid. In addition, when the UE moves from one cell to another cell (a new cell), if the UE reads the system information of the new cell in the new cell, this will cause a certain amount of UE energy consumption. Therefore, the area system information is currently introduced, that is, the system information read by the UE in a cell in an area can be applied to other cells in the area. For the area system information, the UE can compare the network identification, system information area identification, and tag value of the system information of the new cell with the stored network identification, stored system information area identification, and tag value of the stored system information, respectively, to Determine whether the stored system information is valid.

After introducing the area system information, the network equipment to which the cell belongs can send the following information to the UE in the cell:

1) System information area ID (system information area ID, SIAID);

SIAID is used to identify a system information area; SIAID can uniquely identify an area within the area corresponding to a network identifier, and the system information in the area can be the same.

2. System information;

Wherein, the system information here may be, for example, system information (system information, SI), or may also be system information block (system information block, SIB). Among them, one SI includes one or more SIBs.

The system information may include area system information and/or cell system information. The area system information can be valid in an area identified by SIAID, and the cell system information is only valid in the current cell.

3) The value tag (VT) of the system information, VT is used to indicate the effective information of the system information (such as version information, etc.);

4) Indication of the area scope;

The area range indication information is used to indicate whether the above system information is area system information. For example, the area range indication information can be "areascope". When the areascope is set to "TRUE", the system information is the area system information, and the effective area identifier is SIAID. If the areascope does not exist or is set to "FALSE", the system information is the cell system information.

5), the network identity of the cell;

The network identity of the cell can be used to determine the validity of the system information. For example, when a network device sends multiple network identifiers (such as PLMN ID1, PLMN ID2), the UE determines the first network identifier (such as PLMN ID1) according to the order of the network identifiers sent by the network device, which is used to determine the validity of the system information Sexual network identification.

For ease of description, in the embodiments of the present application, information sent by a network device in a certain cell may be referred to as information sent by a certain cell.

The following is a description with a specific example.

Take regional system information as an example. The UE reads the information sent by cell 1, and stores the following information: SIBx, VT _{cell1 of SIBx} , and PLMN ID _cell1 . Optionally, the UE may also store SIAID _cell1 and areascope _cell1 , where areascope _{cell1 is} used to indicate whether the SIBx of cell 1 is area system information. The SIAID _{cell1 is} used to indicate the area identifier of the effective area when the SIBx of the cell 1 is the area system information. It is understandable that for the cell system information, the UE may also store the cell identity. The cell identifier is used to judge the validity when the SIBx is the cell system information.

When the UE moves to cell 2 (the UE can move from cell 1 to at least one other cell and then to cell 2, cell 2 and cell 1 can be the same or different. Or the UE can move directly from cell 1 to Cell 2, at this time, cell 1 and cell 2 are different), the UE reads the following information sent by cell 2: SIAID _cell2 , SIBx VT _cell2 , areascope _cell2 , at least one PLMN ID, and at least one cell identity under the PLMN ID.

Taking the UE _{determining the stored SIBx} of cell 1 as area system information according to areascope _cell1 , and the UE determining the SIBx of cell 2 as area system information according to areascope cell2 as an example, the UE further judges whether the stored SIBx is valid according to the following method:

_{1) The first PLMN ID cell2} in at least one PLMN ID of cell 2 is compared with the PLMN ID _cell1 stored by the UE;

2), the SIBx SIBx cell VT _cell2 and stored by the UE 2 compares the VT _cell1;

3) The SIAID _{cell2 of} _{cell 2 is compared with the SIAID cell1} stored by the UE.

If the above three comparison results are all the same, the UE determines that the SIBx is valid in cell 2. Therefore, the UE does not need to read the SIBx sent by cell 2 in cell 2, but instead applies the previously stored SIBx, or understood as cell 2. The sent SIBx is the same as the stored SIBx, so that the UE can save the overhead of reading the SIBx in cell 2.

It should be noted that the above three comparisons are in no particular order, and as long as one comparison result is that the comparison is unsuccessful (or called a matching failure), there is no need to continue to perform subsequent comparisons. For example, perform the comparison in the order of 2), 1), and 3). If the comparison result of 2) is a successful comparison (or called a successful match), then continue to perform the comparison of 1). If the comparison result of 2) is a comparison If it is unsuccessful, the subsequent comparison is stopped, and it is determined that the final result is that the stored area system information SIBx is invalid, so it is necessary to receive the area system information SIBx from cell 2. Other situations will not be cited one by one. Here is a unified description, and will not be described separately in the follow-up.

Taking the SIBx stored by the UE as cell system information (for example, areascope _cell1 does not exist or exists but is set to "FALSE"), and the UE determines that the _SIBx of cell 2 is not area system information, but cell system information according to areascope cell2, as an example, then The UE judges whether the stored SIBx is valid according to the following method:

2), the SIBx SIBx cell VT _cell2 and stored by the UE 2 compares the VT _cell1;

3) The cell identity of cell 2 is compared with the cell identity stored by the UE.

It should be noted that the above three comparisons are in no particular order, and as long as one comparison result is that the comparison is unsuccessful (or called a matching failure), there is no need to continue to perform subsequent comparisons. For example, perform the comparison in the order of 2), 1), and 3). If the comparison result of 2) is a successful comparison (or called a successful match), then continue to perform the comparison of 1). If the comparison result of 2) is a comparison If it is unsuccessful, the subsequent comparison is stopped, and it is determined that the final result is that the stored cell system information SIBx is invalid, so it is necessary to receive the cell system information SIBx from cell 2. Other situations will not be cited one by one. Here is a unified description, and will not be described separately in the follow-up.

Wherein, the aforementioned cell 1 may be any cell that instructs the UE to receive and store area system information. Cell 1 may be the previous cell before the UE moves to cell 2, or any cell before it moves to cell 2, which is not limited in this application.

In R15, NR only has the public network, so R15 PN UE can compare the first PLMN ID in the received at least one PLMN ID with the stored PLMN ID to determine the validity of the area system information.

In R16, NR introduced the private network NPN. In addition, private networks can be divided into SNPN and PNI-NPN (such as CAG) two types, so the network types that may exist in the network can be classified. The first classification method is to divide network types into public and private networks, where private networks include SNPN and PNI-NPN (such as CAG). The second classification method is to divide the network type into public network, SNPN and PNI-NPN (such as CAG).

Taking the second classification method as an example, as an example, the network identifier sent by a certain cell to the UE may be, for example:

NW ID list:

PLMN ID1+SNPN ID1,

PLMN ID2,

PLMN ID3+CAG ID1.

That is, the network ID sent by the cell to the UE includes 2 private network IDs and 1 public network ID. The 2 private network IDs are: PLMN ID1+SNPN ID1, PLMN ID3+CAG ID1, and the public network ID is PLMN ID2. It is understandable that the private network identifier of the CAG network can also be PLMN ID3.

It is understandable that if the CAG network relies on the network deployed by the operator, the private network identification of the CAG network can be understood as PLMN ID M + CAG ID N, or can also be understood as PLMN ID M. For ease of description, the embodiment of the present application takes the form of PLMN ID M+CAG ID N to represent the private network identification of the CAG network as an example for description, where M and N may be specific numbers. For example, PLMN ID 1+CAG ID 1 represents the private network identification of a CAG network, and PLMN ID 2+CAG ID 1 represents the private network identification of another CAG network, etc., and will not be described one by one. In the embodiments of this application, the private network identifier of the CAG network is PLMN ID M+CAG ID N as an example for description.

After the introduction of the private network, when there are multiple network identities in a cell, how the UE determines which network identities to use to determine the validity of system information? There is currently no corresponding method.

To solve the above problems, this application provides corresponding solutions. Optionally, the solutions provided by this application can be applied to the network architecture shown in FIG. 1, for example.

First, in this embodiment of the present application, a network device may send system information, a tag value of the system information, and at least one network identifier to UEs in a cell of the network device. Optionally, the network device may also send at least one of the area range indication information and the system information area identifier to the UE in the cell of the network device. Wherein, when the at least one network identifier includes two or more network identifiers, the types of these network identifiers may be the same or different. The embodiment of the present application provides two different ways of sending network identifiers. Described below separately. Among them, the type of the network identifier may also be referred to as the category of the network identifier, the classification of the network identifier, etc., and the types of networks indicated by different types of network identifiers are also different.

Sending method 1: The types of network identifiers are divided into public network identifiers and private network identifiers.

Among them, the private network identifier may include the SNPN identifier and/or the CAG identifier. The following is a description with specific examples.

Example 1

It can be seen that in this example 1, the network device sends a PN list (public network identification list) and an NPN list (private network identification list), and the NPN list further includes an SNPN list and a CAG list. Among them, the PN list contains two public network identifiers, namely PLMN ID 1, and PLMN ID 2. The NPN list contains 5 private network identifiers, namely PLMN ID 3+SNPN ID 1, PLMN ID 3+SNPN ID 2, PLMN ID 3+CAG ID 1, PLMN ID 3+CAG ID 2, PLMN ID 3+CAG ID 3.

In this example, in order of sequence, the network IDs are: PLMN ID 1, PLMN ID 2, PLMN ID 3 + SNPN ID 1, PLMN ID 3 + SNPN ID 2, PLMN ID 3 + CAG ID 1, PLMN ID 3 + CAG ID 2. PLMN ID 3+CAG ID 3.

Sending method two, the type of network identification is divided into public network identification, SNPN identification and CAG identification.

The sending method is to send the two private network identifiers separately.

Example 2

It can be seen that in this example 2, the network device sends a PN list, an SNPN list, and a CAG list, where the PN list contains two public network identifiers, namely PLMN ID 1, PLMN ID 2. The SNPN list contains 2 private network identifiers, namely PLMN ID 3+SNPN ID 1, PLMN ID 3+SNPN ID 2, and the CAG list contains 3 private network identifiers, PLMN ID 3+CAG ID 1, PLMN ID 3+ CAG ID 2, PLMN ID 3 + CAG ID 3.

Moreover, in this example, in the order of sequence, the network IDs are: PLMN ID 1, PLMN ID 2, PLMN ID 3 + SNPN ID 1, PLMN ID 3 + SNPN ID 2, PLMN ID 3 + CAG ID 1, PLMN ID 3+ CAG ID 2, PLMN ID 3 + CAG ID 3.

Based on the above-mentioned sending method 1 or sending method 2 of the network identification, the following methods provided in this application can be used to solve the above-mentioned problems.

Implementation method one is to predefine a network identity used for judging the validity of system information in at least one network identity of the first cell.

Wherein, the foregoing pre-definition may be an agreement or pre-negotiation, which is not limited in the embodiment of the present application.

In a possible implementation manner, the first network identifier in the at least one network identifier of the first cell may be predefined to be used for the validity judgment of the system information. For example, if it indicates that the first network identifier in a network identifier is a public network network identifier, such as PLMN ID1, UEs (such as R15 and R16 UE, etc.) all determine that PLMN ID 1 is used for judging the validity of system information. If the first network identifier in at least one network identifier is the NPN identifier, and if the NPN identifier is the private network identifier of the SNPN network, the UE can determine the private network identifier (including PLMN ID and SNPN ID) of the SNPN network. Judging the validity of system information; if the NPN identifier is the private network identifier of the CAG network, the UE can determine the private network identifier of the CAG network (which can include PLMN ID and CAG ID, or only the corresponding PLMN ID ) Used to judge the validity of system information.

As another possible implementation manner, the first network identifier of each network type of the first cell can be pre-defined for the validity judgment of the system information, that is, if there are K network types, you need to select K respectively The first network identifier in the network type, a total of K network identifiers are selected, and K is greater than or equal to 1. It is understandable that the above network types can be divided into public network and private network, or public network, SNPN, and CAG.

Taking public network and private network as an example, the mechanism for determining the validity of system information is as follows:

For example, for PN UE (such as R15 PN UE, R16 PN UE, etc.), the first PN ID of the at least one network identity sent by the network device in the first cell can be pre-defined to determine the validity of the regional system information . For example, for the above example 1, the PN UE determines that the PLMN ID 1 is used to determine the validity of the regional system information.

For another example, for an NPN UE or a UE that can identify a private network identity (such as at least one of R16 PN UE, CAG+PN UE, SNPN UE, CAG-only UE, or UE of subsequent versions), the network device can be predefined The network identifier of the first NPN in the at least one network identifier sent in the first cell is used for judging the validity of the system information. For example, for the above example 1, the NPN UE or the UE that can identify the private network identity can determine the PLMN ID3+SNPN ID1 for judging the validity of the system information. Alternatively, for the R16 PN UE, the network identifier of the first PN among the at least one network identifier sent by the network device in the first cell may also be pre-defined in agreement to determine the validity of the system information. Or, if the CAG network is a network that relies on operator deployment, in the above example 1, for CAG-only UEs, the network of the first PN in the at least one network identifier sent by the network device in the first cell can also be pre-defined The identifier is used to judge the validity of the system information. Alternatively, for the CAG+PN UE, the network identifier of the first PN among the at least one network identifier sent by the network device in the first cell may also be predefined to be used for judging the validity of the system information. Or for an NPN UE or a UE that can identify a private network identity, the network identity of the first PN and the network identity of the first NPN among the at least one network identity sent by the network device in the first cell can be used respectively. To judge the validity of system information. For example, in the above example 1, the determination of PLMN ID 1 and PLMN ID 3+SNPN ID 1 for NPN UEs or UEs that can identify private network identifiers can be used to determine the validity of system information.

Taking the public network, SNPN, and CAG as an example, the mechanism for determining the validity of system information can be as follows:

For example, for PN UE (such as R15 PN UE, R16 PN UE, etc.), the network identity of the first PN among the at least one network identity sent by the network device in the first cell can be predefined for the validity of the system information. judgment. For example, for the above example 2, the UE determines the PLMN ID 1 to be used for judging the validity of the system information.

For another example, for SNPN UE (such as R16 SNPN UE, R17 SNPN UE, etc.), the network identity of the first SNPN among the at least one network identity sent by the network device in the first cell can be predefined for the validity of the system information Judgment. For example, for the above example 2, the UE determines that the PLMN ID3+SNPN ID 1 is used for judging the validity of the system information.

For another example, for CAG-only UEs (such as R16 CAG-only UE, R17 CAG-only UE, etc.), the network identification of the first CAG among the at least one network identification sent by the network device in the first cell can be predefined. To judge the validity of system information. For example, for the above example 2, the UE determines that the PLMN ID3+CAG ID1 is used for judging the validity of the system information. Or, if the CAG network is a network that relies on operator deployment, for CAG-only UEs, the network identifier of the first PN among the at least one network identifier sent by the network device in the first cell can also be pre-defined for system information. Judgment of validity.

For another example, for CAG+PN UE (such as R16 CAG+PN UE, R17 CAG+PN UE, etc.), the first network identifier among at least one network identifier sent by the network device in the first cell can be predefined for the system Judgment of the validity of the information. For example, for the above example 2, the UE determines the PLMN ID 1 to be used for judging the validity of the system information. Or, if the CAG network is a network that relies on operator deployment, for CAG+PN UE UE, the network identifier of the first PN among the at least one network identifier sent by the network device in the first cell can also be pre-defined for system information The validity of the judgment.

For another example, for CAG+PN UE (such as R16 CAG+PN UE, R17 CAG+PN UE, etc.), the network identity and the network identity of the first PN among the at least one network identity sent by the network device in the first cell can be predefined. The network identification of the first CAG can be used to judge the validity of the system information. For example, for the above example 2, the UE determines that both PLMN ID 1 and PLMN ID 3 + CAG ID 1 can be used to determine the validity of system information, and the UE performs system information validity according to PLMN ID 1 or PLMN ID 3 + CAG ID 1 Sexual judgment.

The second implementation method is to determine the network identity used for judging the validity of the system information in the at least one network identity of the first cell according to the instruction of the network device.

The description will be given below with reference to FIG. 2.

As shown in Figure 2, the present application provides a communication method. The method can be executed by the UE or a component (such as a chip, circuit, etc.) for the UE on the terminal device side; on the network side, it can be executed by a network device or a component (such as a chip, circuit, etc.) for the network device. For ease of description, the following uses the UE and the network device to execute the method as an example for description.

The method includes the following steps:

Step 201: The network device generates first information, where the first information is used to indicate that the first network identifier in the at least one network identifier of the first cell is used to determine the validity of the system information.

Wherein, the at least one network identifier here may be one or more types of network identifiers. For example, it may include only one or more public network identifiers, or only one or more private network identifiers, or both public network identifiers and private network identifiers.

As another implementation manner, the first information may also be used to indicate that the first network identifier in the network identifiers corresponding to the at least one network type is used to determine the validity of the system information. Alternatively, the first information is used to indicate that the first network identifier in the network identifiers respectively corresponding to the at least one network type is used to determine the validity of the system information.

The first information here may be, for example, an indication information, called first indication information, for example, it may be bit information. As an example, the first indication information may be indicated by 1-bit information. The first indication information is "1", indicating that the network identifier indicated by the first indication information is used for the validity judgment of the system information, or the first indication information is "0". "Indicates that the network identifier indicated by the first indication information is used to determine the validity of the system information.

Alternatively, the first information may also be a system information area identifier, which is referred to as the first system information area identifier. When the first information is the first system information area identifier, the first system information area identifier is also used to determine the validity of the area system information. For example, when you need to use different system information area identifiers for different network types, you need to use multiple system information area identifiers. In this case, when sending system information area identifiers, you can also use part of the system information. The area identifier indicates a network identifier used to determine the validity of the area system information.

Alternatively, the first information may further include the first indication information and the first system information area identifier.

Step 202: The network device sends the first information and the at least one network identifier of the first cell to the UE. Correspondingly, the UE may receive the first information and the at least one network identity of the first cell.

Step 203: The UE judges the validity of the first system information of the second cell stored in the UE according to the first network identifier.

That is, the UE determines, according to the first information, the network identifier used to determine the validity of the system information, that is, the first network identifier. Then, according to the first network identifier, the validity of the first system information (which may be the area system information or the cell system information) of the second cell stored in the UE is judged.

It should be noted that in the above procedure, the network device not only sends the first information and at least one network identifier of the first cell to the UE, but also sends the first system information and the tag value of the first system information to the UE. Optionally, the area range indication information of the first system information is also sent to the UE. Further, the network device also sends a system information area identifier (such as SIAID) to the UE. Wherein, the area range indication information is used to indicate whether the first system information is area system information. SIAID is used to identify a system information area. The tag value of the first system information is used to indicate valid information (such as version information, etc.) of the first system information.

The UE stores the first system information of the second cell, and also stores other information related to the first system information sent by the second cell, such as: SIAID, tag value of the first system information, area range indication information, cell ID and at least one network ID. Wherein, the area range indication information is used for whether the first system information is area system information. The following embodiment of the present application uses the area range indication information for the case where the first system information is area system information. SIAID is used to identify a system information area. Optionally, the SIAID is used to identify a system information area under a corresponding network under a network identifier. The tag value of the first system information is used to indicate valid information (such as version information, etc.) of the first system information. The at least one network identifier here refers to a judgment for the validity of the first system information.

Therefore, the process for the UE to determine the validity of the first system information stored in the UE according to the first network identifier may include:

According to the received area range indication information of the first cell, the UE determines that the first system information is area system information, and the first system information stored by the UE is also area system information, then further judgment:

1) The first network identity of the first cell is compared with at least one network identity of the second cell stored by the UE;

2) The tag value of the first system information of the first cell is compared with the tag value of the first system information of the second cell stored by the UE;

3) The SIAID of the first cell is compared with the SIAID of the second cell stored by the UE.

If the above three comparison results are all the same, the UE determines that the first system information of the second cell is valid in the first cell, so the UE does not need to read the first system information sent by the first cell in the first cell. Instead, the first system information previously read and stored in the second cell is applied, so that the UE can save the overhead of reading the system information.

A specific example is given below to illustrate the comparison mechanism when there are multiple sets of parameters for judging the validity of system information.

For example, when the UE is in the second cell, the following information is stored: the SIAID of the second cell (indicated by SIAID2), the SIBx of the second cell, the tag value of the SIBx of the second cell, the area range indication information of the second cell, and the second cell At least one network identity of the second cell (for example, PLMN ID 1, PLMN ID 1 + SNPN ID 1). The area range indication information indicates that the SIBx is area system information.

The UE moves to the first cell, and the first cell sends the following information: the SIAID of the first cell (indicated by SIAID1), the SIBx of the first cell, the tag value of the SIBx of the first cell, the area range indication information of the first cell, The first information, and at least one network identifier of the first cell (for example, specifically PLMN ID 1, PLMN ID 2, PLMN ID1+SNPN ID1), then the UE receives the following information from the first cell: SIAID1, SIBx of the first cell The tag value, the area range indication information of the first cell, the first information, and at least one network identifier of the first cell.

First, the UE determines that the SIBx of the first cell is the area system information according to the area range indication information of the first cell.

Then, the UE determines the first network identifier among the at least one network identifier indicated by the first information according to the first information.

As an example, taking the first information as the first indication information, and the first network identifier indicated by the first indication information as PLMN ID1+SNPN ID1, the UE respectively makes the following comparisons:

1) Compare the PLMN ID 1+SNPN ID 1 of the first cell with the stored PLMN ID 1 of the second cell, or the PLMN ID1+SNPN ID1 of the first cell and the stored PLMN ID 1+SNPN ID1 of the second cell Compare.

That is, the UE uses the PLMN ID 1+SNPN ID 1 of the first cell used for judging the validity of the system information and multiple sets of PLMN ID 1, PLMN ID 1+SNPN ID 1 stored by the UE for judging the validity of the system information. Compare separately.

2) Compare the tag value of the SIBx of the first cell with the stored tag value of the SIBx of the second cell;

3), SIAID1 is compared with the stored SIAID2.

It can be seen that although the PLMN ID 1 + SNPN ID 1 of the first cell is different from the stored PLMN ID 1 of the second cell, the PLMN ID 1 + SNPN ID 1 of the first cell is different from the stored PLMN ID 1 + SNPN of the second cell. ID1 is the same, so the comparison result of 1) above is relatively successful. Further, when the above 2) and 3) are relatively successful, the UE determines that the stored SIBx of the second cell is valid in the first cell, and thus the UE can use the stored SIBx of the second cell.

In this example, the first indication information is used to indicate the first network identifier used to determine the validity of the system information, so that the same SIAID (that is, SIAID1) and storage are used for different network identifiers when determining the regional validity. Compared with SIAID2, it is relatively simple to implement.

As another example, taking the first information as SIAID (for example, specifically SIAID3), and the first network identifier indicated by SIAID3 as PLMN ID1+SNPN ID1, the UE respectively makes the following comparisons:

1) Compare the PLMN ID 1+SNPN ID 1 of the first cell with the stored PLMN ID 1 of the second cell, or the PLMN ID1+SNPN ID1 of the first cell and the stored PLMN ID 1+SNPN ID1 of the second cell Compare

3). SIAID3 is compared with the stored SIAID2.

In this example, the SIAID (specifically SIAID3 in the above example) is used to indicate the first network identity used for the validity judgment of the system information, so that when the regional validity judgment is made, different SIAIDs and stored ones are used for different network identities. SIAID for comparison. For example, for the first network identifier indicated by SIAID3, SIAID3 is used to compare with the stored SIAID2, and for other network identifiers (such as the first network identifier in at least one predefined network identifier), SIAID1 and stored SIAID2 are used. To compare, it is more flexible to implement. If the UE determines that multiple sets of parameters of the first cell can be used to determine the validity of the system information, the UE can compare the multiple sets of parameters of the first cell with at least one set of stored parameters. If the comparison result between the set of parameters and any one set of parameters is the same, the UE considers the stored system information to be valid. The solution determines the validity of the stored system information through the comparison of multiple sets of parameters, can increase the probability of the validity of the stored system information, and further reduces the energy consumption of the UE to read the system information.

It is understandable that if the system information stored by the UE is cell system information, and the UE determines that the system information of the first cell is also cell system information, the UE's judging mechanism for determining the validity of the system information can refer to the validity of the above-mentioned regional system information. The difference is that the comparison between cell identities under the network identity needs to replace the comparison between SIAIDs mentioned above.

The third implementation method is to determine the network identifier used for judging the validity of the system information in the at least one network identifier of the first cell according to the instruction and predefined of the network device.

For example, the first network identity in the at least one network identity of the predefined first cell is used for judging the validity of the system information. And, the first information indicates whether the first network identifier in the at least one network identifier of the first cell can also be used for judging the validity of the system information. For example, if the first information exists, it can indicate that the first network identifier in the at least one network identifier of the first cell can also be used to determine the validity of the system information; if the first information does not exist, only the first predefined The first network identity in the at least one network identity of a cell can be used for judging the validity of the system information.

As a possible example, taking the first cell as a cell shared by the public network and the private network, the predefined first public network identifier is used to determine the validity of system information, and the first information is used to indicate the first private network Identifiers are used to determine the validity of system information. The first private network identifier may be the first private network identifier or any private network identifier. For example, the UE (such as R15 PN UE) may default to the first public network identity (that is, the first network identity in the at least one network identity of the first cell) for the validity judgment of the system information. For another example, if the first information does not exist, the NPN UE or the UE that can identify the private network identity (for example, at least one of R16 PN UE, CAG+PN UE, SNPN UE, CAG-only UE), can default to the first one The public network identification is used to judge the validity of the system information. For another example, if the first information exists, the NPN UE or the UE that can identify the private network identity (for example, at least one of R16 PN UE, CAG+PN UE, SNPN UE, CAG-only UE), it can be determined that only the first private The network identifier is used to determine the validity of the system information, or the first public network identifier and the first private network identifier are respectively used to determine the validity of the system information. For another example, if the first information exists, the R16 PN UE can also determine that only the first public network identifier is used for judging the validity of the system information. For another example, if the first information exists, if the CAG network is an operator-dependent network, then CAG-only UE and/or CAG+PN UE UE can also determine that only the first public network identifier is used for the validity of the system information Sexual judgment.

For another example, the first network identifier of each network type may also be predefined to be used for judging the validity of the system information, and the first information is used to indicate that the first network identifier is used for judging the validity of the system information. It is understandable that the above network types can be divided into public network and private network, or public network, SNPN, and CAG.

As a possible example, taking the first cell as a cell shared by the public network and the private network as an example, the network identification list is sorted into the public network identification list and the private network identification list. Refer to Example 1 above. According to the pre-definition, the first public network identifier and the first private network identifier can be used to determine the validity of the system information, respectively. The first information may be the first system information area identifier, and the method for the UE to determine the validity of the system information may include:

Method 1. The UE judges the validity of the system information according to the first network identifier (for example, a private network identifier, called the first private network identifier) indicated by the first information and the first system information area identifier.

Method 2: The first cell also sends the second system information area identifier, and the UE judges the validity of the system information according to the predefined first public network identifier and the second system information area identifier.

Method 3: The first cell also sends the second system information area identifier, and the UE judges the validity of the system information according to the predefined first private network identifier and the second system information area identifier.

In the following, a specific example is given in conjunction with the above example 1 to describe the above three methods. For example, the foregoing first system information area is identified as R16 information element, that is, SIAID-R16, and the foregoing second system information area is identified as R15 information element, that is, SIAID-R15. Among them, the pre-defined first public network identifier (ie PLMN ID 1) and the first private network identifier (PLMN ID 3 + SNPN ID 1) are used to determine the validity of the system information, and to pass the first system information area identifier (Ie, SIAID-R16) indicates that the first private network identifier (for example, PLMN ID 3+CAG ID 1) is also used for judging the validity of system information.

In the above method 1, the UE may compare the PLMN ID 3+CAG ID 1 with the stored at least one network identifier, and compare the SIAID-R16 with the stored SIAID to judge the validity of the stored system information. In the above method 2, the UE may compare the PLMN ID 1 with the stored at least one network identifier, and compare the SIAID-R15 with the stored SIAID to judge the validity of the stored system information. In the above method 3, the UE may compare the PLMN ID 3+SNPN ID 1 with the stored at least one network identifier, and compare the SIAID-R15 with the stored SIAID to judge the validity of the stored system information.

It should be noted that the present application is not limited to the method for the UE to receive and store the network identity from the second cell. For example, when the UE is in the second cell, the method described above for cell 1 can be used, that is, the network identifier used for judging the validity of the system information is indicated by an indication information or a system information area identifier, and/or by a predefined The mode indicates the network identification used for judging the validity of the system information.

Based on the foregoing solution, when the network device does not send the above-mentioned first information to the UE in the first cell in the first cell, the UE may use the first network identifier or the first network identifier among the received at least one network identifier of the first cell. A public network identifier or the first private network identifier is used to determine the validity of system information. For example, R15 PN UE uses the first public network identifier to determine the validity of system information. For another example, an NPN UE or a UE that can identify a private network identity (such as at least one of R16PN UE, CAG+PN UE, SNPN UE, CAG-only UE, or UE of subsequent versions) can use the first network identity (may It is a public network identification or private network identification) to determine the validity of system information.

Based on the foregoing solution, when the network device sends the foregoing first information to the UE in the first cell in the first cell, the UE may determine the validity of the system information according to the network identifier indicated by the first information. For example, the R15 PN UE may use one or more public network identifiers indicated by the first information to determine the validity of the system information. For another example, an NPN UE or a UE that can identify a private network identifier (such as at least one of R16 PN UE, CAG+PN UE, SNPN UE, CAG-only UE, or UE of subsequent versions) can use one indicated by the first information Or multiple public network identifiers or private network identifiers to determine the validity of the system information.

Based on the foregoing solution, when the network device sends the first information to the UE in the first cell in the first cell, the UE can be based on the network identity indicated by the first information or according to a predefined network identity (such as the first network identity, or The first public network identification or the first private network identification) performs the validity judgment of the system information. For example, the R15 PN UE may use one or more public network identifiers indicated by the first information to determine the validity of the system information, or use a predefined first network identifier to determine the validity of the system information. For another example, an NPN UE or a UE that can identify a private network identifier (such as at least one of R16 PN UE, CAG+PN UE, SNPN UE, CAG-only UE, or UE of subsequent versions) can use one indicated by the first information Or multiple public network identifiers or private network identifiers to determine the validity of the system information, or use the predefined first network identifier, or the first public network identifier, or the first private network identifier to determine the validity of the system information judgment.

The fourth implementation method is to indicate a network identifier used for judging the validity of the system information among at least one network identifier of the first cell by pre-defining and through the first information (specifically, the first indication information). Optionally, the method for judging whether the system information is regional system information can be: the network device sends multiple regional range indication information, the multiple regional range indication information is used for the predefined or the first indication information. There is a corresponding relationship between the network identifiers for judging the validity of the system information, so as to determine whether the system information is regional system information in the network under the corresponding network identifier. Optionally, the method for indicating the system information area identifier for judging the validity of the system information may be: the network device sends multiple system information area identifiers, and the multiple system information area identifiers are associated with predefined or first indication information. The indicated multiple network identifiers used for judging the validity of the system information have a corresponding relationship, so as to judge the validity of the system information.

The fourth implementation method may be combined with at least one implementation method of the foregoing implementation methods 1 to 3 to determine the network identifier used for judging the validity of the system information, and further determine the parameters used for judging the validity of the system information.

If there are multiple network identifiers used for judging the validity of the system information, the specific mechanism for judging the validity of the system information needs to be further considered. It is understandable that for R15 PN UE, the terminal equipment only determines the public network network ID and SIAID-R15 for determining the validity of SIBx; for NPN UE or UE that can identify the private network ID (such as R16 PN UE, CAG+PN At least one of UE, SNPN UE, CAG-only UE, or UE of subsequent versions) can identify the private network network identity or R16 information element, and further consider the judgment of the validity of the system information according to the fourth implementation manner.

Take the first network identifier in the predefined at least one network identifier (taking the first network identifier as a public network identifier as an example. For example, PLMN ID 1) used for judging the validity of system information as an example for description.

The terminal device receives at least one network identification information sent by the network device; the terminal device also receives the first information sent by the network device, the first system information area identifier (for example, SIAID-R15, the value is SIAID1), and the second system information area identifier ( For example, SIAID-R16, the value is SIAID2), the first area range indication information (such as SIBx areascope-R15), and the second area range indication information (such as SIBx areascope-R16) at least one of the above information. The first information is used to indicate whether the first network identifier in the at least one network identifier is used for the validity judgment of the system information. Take the first information used to indicate whether the first private network identifier (such as NPN ID1) is used to determine the validity of the system information as an example. The second area range indication information is used to indicate whether the network corresponding to the first network identifier indicated by the system information in the first information is area system information. The second area identifier is used to indicate that the network corresponding to the first network identifier indicated by the first information is the area identifier of the area system information. The terminal device determines the parameters used for judging the validity of the system information based on the above information.

For R15 PN UE, the first public network identifier (such as PLMN ID1) is used for judging the validity of system information according to the predefined definition, and the first area scope indication information areascope-R15 (for example, set to "TRUE", then SIBx Is the regional system information; if set to "FALSE", SIBx is the cell system information) Determine whether the network corresponding to the SIBx in the PLMN ID1 is the regional system information. If it is regional system information, R15 PN UE determines the first public network network ID PLMN ID 1 and the first system information area ID (for example, SIAID-R15, the value is SIAID1) to determine the validity of the regional system information SIBx; If it is the cell system information, the R15 PN UE uses the PLMN ID1 and the corresponding cell identifier to determine the validity of the cell system information SIBx.

For NPN UEs or UEs that can identify private network identifiers (for example, at least one of R16 PN UE, CAG+PN UE, SNPN UE, CAG-only UE, or UE of subsequent versions), the first private network is determined according to the first information. Whether the network identifier (such as NPN ID 1) can be used to determine the validity of system information. For example, if the first information exists or is set to "TURE", the NPN UE or the UE that can identify the private network identity can determine that the first private network identity NPN ID 1 can be used to determine the validity of the system information; if the first information If it does not exist or is set to "FALSE", the NPN UE or the UE that can identify the private network identity can determine that the first private network network identity NPN ID 1 cannot be used to determine the validity of the system information. Or, for an NPN UE or a UE that can identify a private network identity, PLMN ID1 is determined according to a predefined definition to be used for judging the validity of system information, and for the specific description of parameters used for judging the validity of system information, refer to the above R15 PN UE. The description is not repeated here.

As an implementation manner, the NPN UE or the UE that can identify the private network identity can be based on the value of the first area scope indication information SIBx areascope-R15 (for example, if set to "TRUE", SIBx is the area system information; set to "FALSE" Then SIBx is cell system information) to determine whether the network corresponding to SIBx in NPN ID 1 is regional system information. Alternatively, the NPN UE or the UE that can identify the private network identifier can determine whether the SIBx is the area system information according to the second area range indication information SIBx areascope-R16. For example, if SIBx areascope-R16 is set to "TRUE" or exists, the network corresponding to SIBx in NPN ID1 is the area system information; if SIBx areascope-R16 is set to "FALSE" or does not exist, then SIBx is in the network corresponding to NPN ID System information for the cell. If the above UE determines that the network corresponding to SIBx in NPN ID 1 is the regional system information, and if the second system information region identifier (such as SIAID-R16, the value is SIAID2) exists, the terminal device can determine that NPN ID1 and SIAID2 are used for regional system information Judgment of the validity of SIBx; if SIAID2 does not exist, the terminal device can determine that NPN ID 1 and SIAID 1 are used to judge the validity of the regional system information SIBx.

As another possible implementation, the first network identifier of each network type can be predefined to be used for the validity judgment of the system information, and the network device does not need to send the first information. Or, it is possible to predefine whether the network corresponding to SIBx in NPN ID 1 is regional system information. Understandably, the network device does not need to send areascope-R16 at this time. For example, the network corresponding to the predefined SIBx in NPN ID 1 is regional system information, or the network corresponding to the SIBx in NPN ID 1 is judged according to areascope-R15 as regional system information. If it is determined that the network corresponding to SIBx in NPN ID 1 is regional system information, and if SIAID-R16 exists, it can be determined that NPN ID 1 and SIAID-R16 are valid for regional system information SIBx for NPN UEs or UEs that can identify the private network identity. If SIAID-R16 does not exist, the system information area identifier corresponding to SIBx can be pre-defined as SIAID-R15, that is, for NPN UEs or UEs that can identify private network identifiers, NPN ID 1 and SIAID 1 can be determined to be used in the area Judgment of the validity of the system information SIBx. Understandably, the network device does not need to send SIAID-R16 at this time. Alternatively, the network corresponding to SIBx in NPN ID 1 can be predefined as cell system information, or it can be judged according to areascope-R15 whether the network corresponding to SIBx in NPN ID 1 is regional system information. If it is determined that the network corresponding to the SIBx in the NPN ID 1 is the cell system information, for the NPN UE or the UE that can identify the private network identity, the NPN ID 1 and the corresponding cell identity can be determined to determine the validity of the cell system information SIBx. Understandably, the network device does not need to send areascope-R16 at this time.

Optionally, for an NPN UE or a UE that can identify a private network identity, if it is determined that the network corresponding to SIBx in PLMN ID 1 is the area system information according to the value of SIBx areascope-R15, the terminal device can also determine the first public network The network identifiers PLMN ID 1 and SIAID1 are used to determine the validity of the regional system information SIBx. If the NPN UE or the UE that can identify the private network identity determines that the network corresponding to the SIBx in the PLMN ID 1 is the cell system information, the terminal device PLMN ID 1 and the corresponding cell identity are used to determine the validity of the cell system information SIBx. That is, for an NPN UE or a UE that can identify a private network identity, there may be multiple sets of parameters for judging the validity of system information. For the specific comparison process, please refer to the description of other implementation methods in this application, which will not be repeated here.

It is understandable that when there are multiple sets of parameters for judging the validity of system information, if the terminal device determines that any set of parameters corresponding to the system information of the current serving cell and the terminal device stores any set of parameters of the system information If the comparison result is the same, the stored system message can be considered valid. For the specific comparison process, please refer to the description of other implementation methods in this application, which will not be repeated here.

As a specific example, the following possible examples of judging the validity of system information are given by combining implementation method four with implementation methods one to three methods of determining the network identification used for system information. In the following example, the first network identifier in the predefined at least one network identifier is used for judging the validity of system information, and the first information is used to determine whether the first network identifier of other network types is used for system information. Take the judgment of validity as an example. Among them, the other network types are network types corresponding to different first network identifiers.

It is understandable that, in the following example, if the first network identifier of each network type is used to determine the validity of the system information, the network device does not need to send the first information. Further, the network types in the following examples may correspond to the division methods of public network and private network. Optionally, if the system information under the first network identity is used in a predefined manner to determine whether the system information under the first network identity is regional system information, or whether the system information under the second network identity is regional system information is determined according to the first area range indication information , The network device does not need to send the second range area indication information; if the system information area identifier of the area system information under the second network identifier is determined in a predefined manner, such as the first system information area identifier, the network device does not need Send the second system information area identifier.

As an example, the terminal device receives the following information sent by the network device:

In this example, for R15 PN UE, determine the validity of PLMN ID1 for system information according to the pre-defined judgment, and determine that the network corresponding to SIBx in PLMN ID1 is regional system information according to areascope-R15 (the value is "TRUE)" . Further, the R15 PN UE determines the first public network IDs PLMN ID 1 and SIAID1 to be used for judging the validity of the regional system information SIBx.

For NPN UE or UE that can identify the private network identity (such as at least one of R16 PN UE, CAG+PN UE, SNPN UE, CAG-only UE, or UE of subsequent versions), according to the first information (set to "TRUE ”) Determine the first private network identity NPN ID 1 that can be used to determine the validity of system information; NPN UE or UE that can identify the private network identity determines that SIBx is in NPN according to SIBx areascope-R16 (value "TRUE") The network corresponding to ID1 is the regional system information. Since SIAID-R16 (valued as "SIAID2") exists, the terminal device can determine that NPN ID1 and SIAID2 are used to determine the validity of the regional system information SIBx; optionally, for NPN UEs or UEs that can identify private network identifiers, It can also be determined that the first public network ID PLMN ID 1 and SIAID 1 are used to determine the validity of the regional system information SIBx. That is, for an NPN UE or a UE that can identify a private network identity, there may be multiple sets of parameters for judging the validity of system information. For the specific comparison process, please refer to the description of other implementation methods in this application, which will not be repeated here.

As another example, the terminal device receives the following information sent by the network device:

For NPN UE or UE that can identify the private network identity (such as at least one of R16 PN UE, CAG+PN UE, SNPN UE, CAG-only UE, or UE of subsequent versions), according to the first information (set to "TRUE ") Determine whether the first private network ID NPN ID 1 can be used to determine the validity of system information; as a possible implementation, this example combines SIBx areascope-R15 to determine whether SIBx is regional system information in NPN ID 1 Be explained. The NPN UE or the UE that can identify the private network identifier determines that the network corresponding to the SIBx in the NPN ID1 is the area system information according to the SIBx areascope-R15, and can determine that the NPN ID1 and SIAID1 are used to determine the validity of the area system information SIBx; as another In a possible implementation manner, SIBx can be predefined as cell system information in the network corresponding to NPN ID1, and the above terminal device can determine that NPN ID1 and the corresponding cell identity can be used to determine the validity of cell system information SIBx; optional For an NPN UE or a UE that can identify a private network identity, it can also be determined that the first public network network identity PLMN ID 1 and SIAID 1 are used to determine the validity of the regional system information SIBx. That is, for an NPN UE or a UE that can identify a private network identity, there may be multiple sets of parameters for judging the validity of system information. For the specific comparison process, please refer to the description of other implementation methods in this application, which will not be repeated here.

For an NPN UE or a UE that can identify a private network identity (such as at least one of R16 PN UE, CAG+PN UE, SNPN UE, CAG-only UE, or UE of subsequent versions), if the first information does not exist, the PLMN is determined ID1 is a network identification used for judging the validity of system information. Further, the aforementioned UE determines that SIBx is the regional system information in the network corresponding to PLMN ID1 according to SIBx areascope-R15, and determines that the first public network identifier PLMN ID 1 and SIAID1 are used to determine the validity of the regional system information SIBx .

As another possible implementation manner, an NPN UE or a UE that can identify a private network identity can also consider SIBx as cell system information. Specifically, the PLMN ID1 or NPN ID1 and the corresponding cell identity can be combined to determine the validity of the SIBx. Optionally, for an NPN UE or a UE that can identify a private network identity, it can also be determined that the first public network network identity PLMN ID 1 and SIAID 1 are used to determine the validity of the area system information SIBx. That is, for an NPN UE or a UE that can identify a private network identity, there may be multiple sets of parameters for judging the validity of system information. For the specific comparison process, please refer to the description of other implementation methods in this application, which will not be repeated here.

As an implementation manner, the above-mentioned first network device is a CU. After the CU generates the first information, it may also send the first information, the second area identifier, and the second area indication information to one or more DUs corresponding to the CU. At least one, so that the DU can send at least one of the first information, the second area identifier, and the second area indication information to the terminal device. If the above-mentioned first network device is a DU, after the DU generates at least one of the first information, the second area identifier, and the second area indication information, it may also send the first information, the second area identifier, and the second area identifier to the CU corresponding to the DU. At least one of the second area indication information enables the CU to obtain the configuration of the DU, or when used for subsequent handover, the CU may send at least one of the first information, the second area identifier, and the second area indication information to the UE.

As another implementation manner, the above-mentioned first network device is the first access network device, and after the first access network device generates at least one of the first information, the second area identifier, and the second area indication information, it may also send The second access network device sends at least one of the first information, the second area identifier, and the second area indication information. For example, when the second access network device sends a handover request to the first access network device, the first access network device may send at least one of the first information, the second area identifier, and the second area indication information to the second access network device. One, so that the second access network device can send at least one of the first information, the second area identifier, and the second area indication information to the UE that needs to switch to the cell of the first access network device (for example, through RRC reconfiguration The message is sent to the UE). For example, when there is an interface between the first access network device and the second access network device, the first access network device connects to the second access network device through the interface between the first access network device and the second access network device. The network device sends a handover request response message, and the handover request response message carries at least one of the first information, the second area identifier, and the second area indication information. For another example, when there is no interface between the first access network device and the second access network device, and the first access network device and the second access network device respectively have interfaces with the first core network device, then the first access network device The network access device may send at least one of the first information, the second area identifier, and the second area indication information to the first core network device through the interface between the first access network device and the first core network device (for example, by handover The request response message carries at least one of the above-mentioned first information, second area identifier, and second area indication information), and then the first core network device can send a message to the first core network device through the interface between the first core network device and the second access network device. The second access network device sends at least one of the first information, the second area identifier, and the second area indication information (for example, at least one of the first information, the second area identifier, and the second area indication information is carried by a handover command message). For another example, when there is no interface between the first access network device and the second access network device, the first access network device has an interface with the first core network device, and the second access network device has an interface with the second core network device. If there is an interface, and the first core network device has an interface with the second core network device, the first access network device can send the above to the first core network device through the interface between the first access network device and the first core network device At least one of the first information, the second area identifier, and the second area indication information (for example, at least one of the first information, the second area identifier, and the second area indication information is carried in a handover request response message), the first core network device At least one of the above-mentioned first information, second area identifier, and second area indication information can be sent to the second core network device through the interface between the first core network device and the second core network device, and the second core network device can pass The interface between the second core network device and the second access network device sends at least one of the first information, the second area identifier, and the second area indication information to the second access network device (for example, the handover command message carries the above information). At least one of the first information, the second area identifier, and the second area indication information).

The foregoing mainly introduces the solution provided by this application from the perspective of interaction between various network elements. It can be understood that, in order to realize the above-mentioned functions, each network element described above includes hardware structures and/or software modules corresponding to each function. Those skilled in the art should easily realize that in combination with the units and algorithm steps of the examples described in the embodiments disclosed herein, the present invention can be implemented in the form of hardware or a combination of hardware and computer software. Whether a certain function is executed by hardware or computer software-driven hardware depends on the specific application and design constraint conditions of the technical solution. Professionals and technicians can use different methods for each specific application to implement the described functions, but such implementation should not be considered as going beyond the scope of the present invention.

It can be understood that, in each of the foregoing method embodiments, the steps or operations implemented by the terminal device can also be implemented by components (such as chips or circuits) that can be configured in the terminal device. The steps or operations implemented by the network device can also be implemented by a network device. It can be implemented by a component (such as a chip or a circuit) that can be configured in a network device.

The embodiments of the present application also provide a device for implementing any of the above methods. For example, a device is provided that includes units (or means) for implementing each step performed by the terminal device in any of the above methods. For another example, another device is also provided, including a unit (or means) for implementing each step executed by the network device in any of the above methods.

For example, refer to FIG. 3, which is a schematic diagram of a communication device provided by an embodiment of this application. The device is used to implement the steps performed by the corresponding network equipment in the foregoing method embodiment. As shown in FIG. 3, the device 300 includes a receiving unit 310 and a judgment unit 320. Optionally, a determining unit 330 is further included.

The receiving unit 310 is configured to receive first information of a first cell and at least one network identity of the first cell, where the first information is used to indicate the first of the at least one network identity of the first cell The network identifier is used to determine the validity of system information, and the system information includes area system information or cell system information; the determining unit 320 is configured to determine the first cell of the second cell stored in the terminal device according to the first network identifier. Validity of system information.

In some possible implementation methods, the first information is first indication information; or, the first information is a first system information area identifier, and the first system information area identifier is also used for the validity of the system information judgment.

In some possible implementation methods, the determining unit 330 is configured to determine the first network identifier among the at least one network identifier of the first cell; the determining unit 320 is specifically configured to determine the first network identifier according to the first network identifier or The first network identifier in the at least one network identifier determines the validity of the first system information.

It can be understood that each of the above-mentioned units may also be referred to as a module or a circuit, etc., and each of the above-mentioned units may be independently arranged, or may be fully or partially integrated.

The above judgment unit 320 and the determination unit 330 may also be implemented by a processing unit, or the judgment unit 320 and the determination unit 330 may also be collectively referred to as a processing unit. The above-mentioned processing unit may also be referred to as a processor.

Optionally, the above-mentioned communication device 300 may further include a storage unit for storing data or instructions (also called codes or programs), and each of the above-mentioned units may interact or be coupled with the storage unit to implement the corresponding method or Features. For example, the processing unit may read data or instructions in the storage unit, so that the communication device implements the method in the foregoing embodiment.

For example, refer to FIG. 4, which is a schematic diagram of a communication device provided by an embodiment of this application. The device is used to implement the steps performed by the corresponding network device in the foregoing method embodiment. As shown in FIG. 4, the device 400 includes a determining unit 410 and a sending unit 420.

The determining unit 410 is configured to generate first information, where the first information is used to indicate that the first network identifier in the at least one network identifier of the first cell is used for the validity judgment of the system information, and the system information includes area system information Or cell system information; the sending unit 420 is configured to send the first information and the at least one network identifier of the first cell to a terminal device.

In some possible implementation methods, the first information is first indication information; or, the first information is a first system information area identifier, and the first system information area identifier is also used to validate the area system information. Sexual judgment.

It can be understood that each of the above-mentioned units may also be referred to as a module or a circuit, etc., and the above-mentioned various units may be provided independently, or may be fully or partially integrated.

Optionally, the aforementioned communication device 400 may further include a storage unit for storing data or instructions (also referred to as codes or programs), and each of the aforementioned units may interact or couple with the storage unit to implement corresponding methods or Features. For example, the processing unit may read data or instructions in the storage unit, so that the communication device implements the method in the foregoing embodiment.

It should be understood that the division of units in the above device is only a division of logical functions, and may be fully or partially integrated into one physical entity in actual implementation, or may be physically separated. In addition, the units in the device can be all implemented in the form of software called by processing elements; they can also be all implemented in the form of hardware; part of the units can also be implemented in the form of software called by the processing elements, and some of the units can be implemented in the form of hardware. For example, each unit can be a separate processing element, or it can be integrated in a certain chip of the device for implementation. In addition, it can also be stored in the memory in the form of a program, which is called and executed by a certain processing element of the device. Features. In addition, all or part of these units can be integrated together or implemented independently. The processing element described here can also become a processor, which can be an integrated circuit with signal processing capabilities. In the implementation process, each step of the above method or each of the above units may be implemented by an integrated logic circuit of hardware in a processor element or implemented in a form of being called by software through a processing element.

In an example, the unit in any of the above devices may be one or more integrated circuits configured to implement the above methods, for example: one or more application specific integrated circuits (ASICs), or, one or Multiple microprocessors (digital singnal processors, DSPs), or, one or more field programmable gate arrays (Field Programmable Gate Arrays, FPGAs), or a combination of at least two of these integrated circuits. For another example, when the unit in the device can be implemented in the form of a processing element scheduler, the processing element can be a general-purpose processor, such as a central processing unit (CPU) or other processors that can call programs. For another example, these units can be integrated together and implemented in the form of a system-on-a-chip (SOC).

The above receiving unit (for example, the receiving unit) is an interface circuit of the device for receiving signals from other devices. For example, when the device is implemented as a chip, the receiving unit is an interface circuit used by the chip to receive signals from other chips or devices. The above unit for sending (for example, the sending unit) is an interface circuit of the device for sending signals to other devices. For example, when the device is implemented as a chip, the sending unit is an interface circuit used by the chip to send signals to other chips or devices.

An embodiment of the present application also provides a communication device, which is used to implement the units (or means) of each step performed by the terminal device in any of the above methods or used to implement each of the steps performed by the network device in any of the above methods. The unit (or means) of the step. The communication device may include a processor and a memory. The memory is used to store computer-executable instructions. When the device is running, the processor executes the computer-executable instructions stored in the memory, so that the device executes the above-mentioned various aspects. method. The device may be a network device or a chip used for a network device, or a terminal device or a chip used for a terminal device.

Refer to FIG. 5, which is a schematic structural diagram of a terminal device provided by an embodiment of the application. The terminal device is used to implement the operation of the terminal device in the above embodiment. As shown in FIG. 5, the terminal equipment includes: an antenna 510, a radio frequency device 520, and a signal processing part 530. The antenna 510 is connected to the radio frequency device 520. In the downlink direction, the radio frequency device 520 receives the information sent by the network device through the antenna 510, and sends the information sent by the network device to the signal processing part 530 for processing. In the upstream direction, the signal processing part 530 processes the information of the terminal equipment and sends it to the radio frequency device 520, and the radio frequency device 520 processes the information of the terminal equipment and sends it to the network equipment via the antenna 510.

The signal processing part 530 is used to realize the processing of each communication protocol layer of the data. The signal processing part 530 may be a subsystem of the terminal device, and the terminal device may also include other subsystems, such as a central processing subsystem, which is used to process the terminal device operating system and application layer; another example is the peripheral sub-system. The system is used to realize the connection with other equipment. The signal processing part 530 may be a separately provided chip. Optionally, the above devices may be located in the signal processing part 530.

The signal processing part 530 may include one or more processing elements 531, for example, a main control CPU and other integrated circuits, and an interface circuit 533. In addition, the signal processing part 530 may also include a storage element 532. The storage element 532 is used to store data and programs. The program used to execute the method executed by the terminal device in the above method may or may not be stored in the storage element 532, for example, stored in a memory other than the signal processing part 530 During use, the signal processing part 530 loads the program into the cache for use. The interface circuit 533 is used to communicate with the device. The above devices may be located in the signal processing part 530, and the signal processing part 530 may be implemented by a chip. The chip includes at least one processing element and an interface circuit, wherein the processing element is used to execute each step of any method executed by the above terminal device. The circuit is used to communicate with other devices. In one implementation, the unit that implements each step in the above method can be implemented in the form of a processing element scheduler. For example, the device includes a processing element and a storage element, and the processing element calls a program stored by the storage element to execute the above method embodiments. The method executed by the terminal device. The storage element may be a storage element whose processing element is on the same chip, that is, an on-chip storage element.

In another implementation, the program used to execute the method executed by the terminal device in the above method may be a storage element on a different chip from the processing element, that is, an off-chip storage element. At this time, the processing element calls or loads a program from the off-chip storage element on the on-chip storage element to call and execute the method executed by the terminal device in the above method embodiment.

In yet another implementation, the unit of the terminal device that implements each step in the above method may be configured as one or more processing elements, and these processing elements are provided on the signal processing part 530, where the processing elements may be integrated circuits, for example : One or more ASICs, or, one or more DSPs, or, one or more FPGAs, or a combination of these types of integrated circuits. These integrated circuits can be integrated together to form a chip.

The units that implement each step in the above method can be integrated together and implemented in the form of a system-on-a-chip (SOC), and the SOC chip is used to implement the above method. The chip can integrate at least one processing element and a storage element, and the processing element can call the stored program of the storage element to implement the method executed by the above terminal device; or, the chip can integrate at least one integrated circuit to implement the above terminal The method executed by the device; or, it can be combined with the above implementations. The functions of some units are implemented in the form of calling programs by processing elements, and the functions of some units are implemented in the form of integrated circuits.

It can be seen that the above apparatus may include at least one processing element and an interface circuit, wherein at least one processing element is used to execute any method executed by the terminal device provided in the above method embodiment. The processing element can execute part or all of the steps executed by the terminal device in the first way: calling the program stored in the storage element; or in the second way: combining instructions through the integrated logic circuit of the hardware in the processor element Part or all of the steps executed by the terminal device are executed in a manner; of course, part or all of the steps executed by the terminal device may also be executed in combination with the first manner and the second manner.

The processing element here is the same as the above description, and it may be a general-purpose processor, such as a CPU, or one or more integrated circuits configured to implement the above method, such as: one or more ASICs, or, one or more micro-processing DSP, or, one or more FPGAs, etc., or a combination of at least two of these integrated circuit forms. The storage element can be a memory or a collective term for multiple storage elements.

Refer to FIG. 6, which is a schematic structural diagram of a network device provided by an embodiment of this application. The network device is used to implement the operation of the network device in the above embodiment. As shown in FIG. 6, the network equipment includes: an antenna 610, a radio frequency device 620, and a baseband device 630. The antenna 610 is connected to the radio frequency device 620. In the uplink direction, the radio frequency device 620 receives the information sent by the terminal device through the antenna 610, and sends the information sent by the terminal device to the baseband device 630 for processing. In the downlink direction, the baseband device 630 processes the information of the terminal device and sends it to the radio frequency device 620, and the radio frequency device 620 processes the information of the terminal device and sends it to the terminal device via the antenna 610.

The baseband device 630 may include one or more processing elements 631, for example, a main control CPU and other integrated circuits, and an interface 633. In addition, the baseband device 630 may also include a storage element 632, the storage element 632 is used to store programs and data; the interface 633 is used to exchange information with the radio frequency device 620, the interface is, for example, a common public radio interface (CPRI) . The above apparatus for network equipment may be located in the baseband apparatus 630. For example, the above apparatus for network equipment may be a chip on the baseband apparatus 630. The chip includes at least one processing element and an interface circuit, wherein the processing element is used to execute the above network. For each step of any method executed by the device, the interface circuit is used to communicate with other devices. In one implementation, the unit for the network device to implement each step in the above method can be implemented in the form of a processing element scheduler. For example, the device for the network device includes a processing element and a storage element, and the processing element calls the program stored by the storage element to Perform the method performed by the network device in the above method embodiment. The storage element may be a storage element with the processing element on the same chip, that is, an on-chip storage element, or a storage element on a different chip from the processing element, that is, an off-chip storage element.

In another implementation, the unit of the network device that implements each step in the above method may be configured as one or more processing elements, and these processing elements are arranged on the baseband device. The processing elements here may be integrated circuits, such as one Or multiple ASICs, or, one or more DSPs, or, one or more FPGAs, or a combination of these types of integrated circuits. These integrated circuits can be integrated together to form a chip.

The units for the network equipment to implement each step in the above method can be integrated together and implemented in the form of a system-on-a-chip (SOC). For example, the baseband device includes the SOC chip for implementing the above method. At least one processing element and storage element can be integrated in the chip, and the processing element can call the stored program of the storage element to implement the method executed by the above network device; or, at least one integrated circuit can be integrated in the chip to implement the above network The method executed by the device; or, it can be combined with the above implementations. The functions of some units are implemented in the form of calling programs by processing elements, and the functions of some units are implemented in the form of integrated circuits.

It can be seen that the above apparatus for a network device may include at least one processing element and an interface circuit, wherein at least one processing element is used to execute any method performed by the network device provided in the above method embodiments. The processing element can execute part or all of the steps executed by the network device in the first way: calling the program stored in the storage element; or in the second way: combining instructions through the integrated logic circuit of the hardware in the processor element Part or all of the steps performed by the network device are executed in the method; of course, part or all of the steps executed by the network device above can also be executed in combination with the first method and the second method.

An embodiment of the present application also provides a communication system, including the communication device as shown in FIG. 3 and the communication device as shown in FIG. 4.

Another embodiment of the present application provides a communication system, including a terminal device as shown in FIG. 5 and a network device as shown in FIG. 6.

In the above-mentioned embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented by software, it can be implemented in the form of a computer program product in whole or in part. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on the computer, the processes or functions described in the embodiments of the present application are generated in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions may be transmitted from a website, computer, server, or data center. Transmission to another website site, computer, server or data center via wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.). The computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or a data center integrated with one or more available media. The usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, and a magnetic tape), an optical medium (for example, a DVD), or a semiconductor medium (for example, a solid state disk (SSD)).

The various illustrative logic units and circuits described in the embodiments of this application can be implemented by general-purpose processors, digital signal processors, application-specific integrated circuits (ASIC), field programmable gate arrays (FPGA) or other programmable logic devices, Discrete gates or transistor logic, discrete hardware components, or any combination of the above are designed to implement or operate the described functions. The general-purpose processor may be a microprocessor. Alternatively, the general-purpose processor may also be any traditional processor, controller, microcontroller, or state machine. The processor can also be implemented by a combination of computing devices, such as a digital signal processor and a microprocessor, multiple microprocessors, one or more microprocessors combined with a digital signal processor core, or any other similar configuration. achieve.

In one or more exemplary designs, the aforementioned functions described in this application can be implemented in hardware, software, firmware, or any combination of the three. If implemented in software, these functions can be stored on a computer-readable medium, or transmitted on the computer-readable medium in the form of one or more instructions or codes. Computer-readable media include computer storage media and communication media that facilitate the transfer of computer programs from one place to another. The storage medium can be any available medium that can be accessed by a general-purpose or special computer. For example, such computer-readable media may include, but are not limited to, RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other device that can be used to carry or store instructions or data structures and Other program code media that can be read by general-purpose or special computers, or general-purpose or special processors. In addition, any connection can be appropriately defined as a computer-readable medium, for example, if the software is from a website, server, or other remote source through a coaxial cable, fiber optic computer, twisted pair, or digital subscriber line (DSL) Or transmitted by wireless means such as infrared, wireless and microwave are also included in the definition of computer-readable media. The disks and discs include compressed disks, laser disks, optical disks, digital versatile disks (English: Digital Versatile Disc, abbreviated as DVD), floppy disks, and Blu-ray disks. Disks usually copy data with magnetism. Discs usually use lasers to copy data optically. The combination of the above can also be contained in a computer readable medium.

Those skilled in the art should be aware that in one or more of the above examples, the functions described in this application can be implemented by hardware, software, firmware, or any combination thereof. When implemented by software, these functions can be stored in a computer-readable medium or transmitted as one or more instructions or codes on the computer-readable medium. The computer-readable medium includes a computer storage medium and a communication medium, where the communication medium includes any medium that facilitates the transfer of a computer program from one place to another. The storage medium may be any available medium that can be accessed by a general-purpose or special-purpose computer.

Although the application has been described in combination with specific features and embodiments, it is obvious that various modifications and combinations can be made without departing from the spirit and scope of the application. Correspondingly, the specification and drawings are merely exemplary descriptions of the application as defined by the appended claims, and are deemed to cover any and all modifications, changes, combinations or equivalents within the scope of the application. Obviously, those skilled in the art can make various changes and modifications to the application without departing from the scope of the application. In this way, if these modifications and variations of this application fall within the scope of the claims of this application and their equivalent technologies, this application also intends to include these modifications and variations.

Claims

A communication method, characterized in that it comprises:

Receive first information of a first cell and at least one network identifier of the first cell, where the first information is used to indicate that the first network identifier in the at least one network identifier of the first cell is used for system information To determine the validity of the system information, the system information includes regional system information or cell system information;

According to the first network identifier, the validity of the first system information of the second cell stored in the terminal device is determined.
The method according to claim 1, wherein the first information is first indication information; or,

The first information is a first system information area identifier, and the first system information area identifier is also used to determine the validity of the system information.
The method according to claim 1 or 2, wherein the first network identifier is a public network identifier or a private network identifier, and the private network identifier includes an independent private network identifier or a closed access network identifier.
The method according to any one of claims 1-3, further comprising:

Determine the first network identity in the at least one network identity of the first cell;

According to the first network identifier, judging the validity of the first system information in the terminal device includes:

Determine the validity of the first system information according to the first network identifier or the first network identifier in the at least one network identifier.
A communication method, characterized in that it comprises:

Generating first information, where the first information is used to indicate that the first network identifier in the at least one network identifier of the first cell is used to determine the validity of the system information, and the system information includes area system information or cell system information;

Sending the first information and the at least one network identifier of the first cell to a terminal device.
The method according to claim 5, wherein the first information is first indication information; or,

The first information is a first system information area identifier, and the first system information area identifier is also used to determine the validity of the area system information.
The method according to claim 5 or 6, wherein the first network identifier is a public network identifier or a private network identifier, and the private network identifier includes an independent private network identifier or a closed access network identifier.
A communication device, characterized in that it comprises:

The receiving unit is configured to receive first information of the first cell and at least one network identifier of the first cell, where the first information is used to indicate the first network in the at least one network identifier of the first cell The identifier is used for judging the validity of system information, the system information including area system information or cell system information;

The judging unit is configured to judge the validity of the first system information of the second cell stored in the terminal device according to the first network identifier.
The device according to claim 8, wherein the first information is first indication information; or,

The first information is a first system information area identifier, and the first system information area identifier is also used to determine the validity of the system information.
The device according to claim 8 or 9, wherein the first network identifier is a public network identifier or a private network identifier, and the private network identifier includes an independent private network identifier or a closed access network identifier.
The device according to any one of claims 8-10, further comprising a determining unit, configured to determine the first network identifier of the at least one network identifier of the first cell;

The determining unit is specifically configured to determine the validity of the first system information according to the first network identifier or the first network identifier in the at least one network identifier.
A communication device, characterized in that it comprises:

The determining unit is configured to generate first information, where the first information is used to indicate that the first network identifier in the at least one network identifier of the first cell is used to determine the validity of the system information, and the system information includes area system information or Community system information;

The sending unit is configured to send the first information and the at least one network identifier of the first cell to a terminal device.
The apparatus according to claim 12, wherein the first information is first indication information; or,

The first information is a first system information area identifier, and the first system information area identifier is also used to determine the validity of the area system information.
The device according to claim 12 or 13, wherein the first network identifier is a public network identifier or a private network identifier, and the private network identifier includes an independent private network identifier or a closed access network identifier.
A communication device, characterized by comprising: a processor and an interface circuit, the interface circuit is used to communicate with other devices, and the processor is used to execute the method according to any one of claims 1-4.
A communication device, characterized by comprising: a processor and an interface circuit, the interface circuit is used to communicate with other devices, and the processor is used to execute the method according to any one of claims 5-7.
A computer-readable storage medium, wherein the computer-readable storage medium stores a program, and when the program is called by a processor, the method according to any one of claims 1-7 is executed.
A computer program, characterized in that when the program is called by a processor, the method according to any one of claims 1-7 is executed.
A communication system, characterized by comprising a terminal device for executing the method according to any one of claims 1-4 and a network device for executing the method according to any one of claims 5-7.