CN117676738A

CN117676738A - Network access method, device, communication equipment and storage medium

Info

Publication number: CN117676738A
Application number: CN202211085896.9A
Authority: CN
Inventors: 旷婧华
Original assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Current assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Priority date: 2022-09-06
Filing date: 2022-09-06
Publication date: 2024-03-08

Abstract

The embodiment of the invention discloses a network access method, a network access device, communication equipment and a storage medium. The method comprises the following steps: the method comprises the steps that first network equipment sends a first system message of a target cell to a terminal, wherein the first system message is used for the terminal to access the target cell, and the first network equipment corresponds to a source cell.

Description

Network access method, device, communication equipment and storage medium

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a network access method, a device, a communication device, and a storage medium.

Background

In the process of cell redirection, when the terminal performs network selection and residence at a target frequency point, the terminal needs to read the system information of the target cell, and then establishes uplink synchronization with the network by initiating a random access process. For the case that the carrier bandwidth of the network side is larger than that of the terminal side, the terminal cannot understand the system message, so that the random access process cannot be initiated normally.

Disclosure of Invention

In order to solve the existing technical problems, the embodiment of the invention provides a network access method, a device, communication equipment and a storage medium.

In order to achieve the above object, the technical solution of the embodiment of the present invention is as follows:

in a first aspect, an embodiment of the present invention provides a network access method, where the method includes:

the method comprises the steps that first network equipment sends a first system message of a target cell to a terminal, wherein the first system message is used for the terminal to access the target cell, and the first network equipment corresponds to a source cell.

In the above solution, the sending, by the first network device, a first system message of the target cell to the terminal includes: the first network device sending a first signaling to the terminal, the first signaling being for releasing a radio resource control (RRC, radio Resource Control) connection of the terminal; the first signaling includes the first system message.

In the above solution, the first signaling further includes at least one of the following:

the method comprises the steps of a target frequency point, a cell identifier of a target cell related to the target frequency point and a first random access resource of the target cell related to the target frequency point.

In the above solution, before the first network device sends the first signaling to the terminal, the method further includes:

the first network device sends a measurement control message to the terminal, wherein the measurement control message is used for requesting the terminal to measure a Synchronous Signal Block (SSB) of a target frequency point and requesting the terminal to report a cell identifier of a target cell related to the target frequency point;

And the first network equipment receives the cell identification of the target cell sent by the terminal.

In the above scheme, the method further comprises: the first network device identifies the terminal as an on-network problem terminal, and the carrier bandwidth of the on-network problem terminal is smaller than the carrier bandwidth of the target cell.

In the above solution, the identifying, by the first network device, the terminal as an on-network problem terminal includes:

the first network equipment receives model information and/or version information sent by the terminal, and determines that the terminal is an online problem terminal based on the model information and/or the version information; or,

the first network equipment receives first identification information sent by the terminal, compares the first identification information with the identification information in the information base, and determines that the terminal is an online problem terminal under the condition of successful comparison; or,

and the first network equipment determines that the terminal is an online problem terminal based on the resident frequency point information and/or the measurement information of the terminal.

In the above scheme, the method further comprises: the first network device obtains pre-stored first information including at least one of: the method comprises the steps of identifying a target cell related to a target frequency point, a first system message of the target cell and a first random access resource of the target cell; or,

The first network device obtaining second information from a second network device based on a cell identity of the target cell; the second information comprises at least one of a cell identifier of a target cell related to a target frequency point, a second system message of the target cell and a first random access resource of the target cell; modifying the second system message to obtain the first system message when the second information comprises the second system message; the second network device is a network device corresponding to the target cell.

In the above solution, the obtaining the second information from the second network device includes:

the first network equipment directly communicates with second network equipment to obtain the second information; or,

the first network device communicates with a second network device through a first access and mobility management function (AMF, access andMobility Management Function) and a second AMF to obtain the second information, wherein the first AMF is an AMF accessed by the first network device, and the second AMF is an AMF accessed by the second network device; or,

the first network device communicates with the second network device through a third AMF to obtain the second information, wherein the third AMF is an AMF accessed by the first network device and the second network device together.

In a second aspect, an embodiment of the present invention further provides a network access method, where the method includes:

the terminal receives a first system message of a target cell sent by first network equipment; the first network device is a network device corresponding to a source cell;

the terminal initiates network access to the target cell based at least on the first system message in case of releasing the connection with the source cell.

In the above scheme, the terminal receives a first system message of a target cell sent by a first network device, including: the terminal receives a first signaling sent by the first network device, wherein the first signaling is used for releasing RRC connection of the terminal; the first signaling includes the first system message.

In the above solution, the initiating network access for the target cell based at least on the first system message includes:

the terminal obtains basic information for network access of the target cell based on the first system message, and initiates network access by using the first random access resource based on the basic information.

In the above scheme, the method further comprises:

the terminal receives measurement control information sent by the first network device, wherein the measurement control information is used for requiring the terminal to measure SSB of a target frequency point and requiring the terminal to report a cell identifier of a target cell related to the target frequency point;

the terminal measures SSB of the target frequency point, obtains a cell identifier of a target cell related to the target frequency point, and sends the cell identifier of the target cell to the first network equipment.

In the above scheme, the method further comprises: the terminal sends model information and/or version information to the first network equipment, wherein the model information and/or version information is used for judging whether the terminal is an online problem terminal or not; or,

and the terminal sends first identification information to the first network equipment, wherein the first identification information is used for judging whether the terminal is an online problem terminal or not.

In a third aspect, an embodiment of the present invention further provides a network access method, where the method includes:

the second network device sends second information to the first network device, the second information including at least one of:

The method comprises the steps of a cell identifier of a target cell related to a target frequency point, a second system message of the target cell, and a first random access resource of the target cell;

the second network device is a network device corresponding to the target cell, and the first network device is a network device corresponding to a source cell; the second system message is used for obtaining a first system message of the terminal accessing the target cell.

In the above scheme, the second network device sends second information to the first network device, including:

the second network device directly sends the second information to the first network device; or,

the second network device sends the second information to the first network device through a second AMF and a first AMF, wherein the first AMF is an AMF accessed by the first network device, and the second AMF is an AMF accessed by the second network device; or,

the second network device sends the second information to the first network device through a third AMF, wherein the third AMF is an AMF accessed by the first network device and the second network device together.

In the above scheme, the method further comprises: and under the condition that the terminal accesses the target cell, the second network equipment sends third information to the terminal, wherein the third information comprises configuration information of a special carrier bandwidth matched with the bandwidth capability of the terminal.

In a fourth aspect, an embodiment of the present invention further provides a network access device, where the device is applied to a first network device, where the first network device is a network device corresponding to a source cell; the device comprises: the first communication unit is used for sending a first system message of a target cell to the terminal, wherein the first system message is used for the terminal to access the target cell.

In a fifth aspect, an embodiment of the present invention further provides a network access device, where the device is applied to a terminal, and the device includes: a second communication unit and a second processing unit; wherein,

the second communication unit is configured to receive a first system message of a target cell sent by a first network device; the first network device is a network device corresponding to a source cell;

the second processing unit is configured to initiate network access based at least on the first system message in case of releasing the connection with the source cell.

In a sixth aspect, an embodiment of the present invention further provides a network access apparatus, where the apparatus is applied to a second network device, where the second network device is a network device corresponding to a target cell; the device comprises: a third communication unit for transmitting second information to the first network device, the second information comprising at least one of:

wherein the first network device is a network device corresponding to a source cell; the second system message is used for obtaining a first system message of the terminal accessing the target cell.

In a seventh aspect, an embodiment of the present invention further provides a computer readable storage medium, where a computer program is stored, where the program when executed by a processor implements the steps of the network access method according to the first aspect, the second aspect or the third aspect of the embodiment of the present invention.

In an eighth aspect, an embodiment of the present invention further provides a communication device, including a memory, a processor, and a computer program stored in the memory and capable of running on the processor, where the processor executes the program to implement the steps of the network access method according to the first aspect, the second aspect, or the third aspect of the embodiments of the present invention.

The embodiment of the invention provides a network access method, a device, communication equipment and a storage medium, wherein the method comprises the following steps: a first network device sends a first system message of a target cell to a terminal, wherein the first system message is used for the terminal to access the target cell, and the first network device is a network device corresponding to a source cell; the terminal releases the connection with the source cell and initiates network access to the target cell based at least on the first system message. By adopting the technical scheme of the embodiment of the invention, the first system information of the target cell is sent to the terminal through the first network equipment (namely the source cell), so that the terminal can acquire the related information for initiating network access in the target cell through the first system information, the terminal does not need to read the system information from the target cell, the problem that the system information of the target cell cannot be read because the carrier bandwidth of the network side is larger than the carrier bandwidth of the terminal side in the process of redirecting the cell by the terminal is solved, and the network access of the target cell in the process of redirecting the cell is realized.

Drawings

Fig. 1 is a flow chart of a network access method according to an embodiment of the present invention;

fig. 2a to fig. 2c are schematic views of information acquisition in a network access method according to an embodiment of the present invention;

fig. 3 is a second flow chart of a network access method according to an embodiment of the present invention;

fig. 4 is a flowchart of a network access method according to an embodiment of the present invention;

fig. 5 is an interactive flow diagram of a network access method according to an embodiment of the present invention;

fig. 6 is a schematic diagram of a composition structure of a network access device according to an embodiment of the present invention;

fig. 7 is a schematic diagram of a second component structure of a network access device according to an embodiment of the present invention;

fig. 8 is a schematic diagram of a third component structure of a network access device according to an embodiment of the present invention;

fig. 9 is a schematic diagram of a hardware composition structure of a communication device according to an embodiment of the present invention.

Detailed Description

The invention will be described in further detail with reference to the accompanying drawings and specific examples.

The technical scheme of the embodiment of the invention can be applied to various communication systems, such as: global system for mobile communications (GSM, global System of Mobile communication), long Term Evolution (LTE) system, or 5G system, etc. Alternatively, the 5G system or 5G network may also be referred to as a New Radio (NR) system or NR network.

By way of example, the communication system to which the embodiments of the present invention are applied may include network devices and terminal devices (may also be referred to as terminals, communication terminals, etc.); the network device may be a device in communication with the terminal device. Wherein the network device may provide communication coverage for a range of areas and may communicate with terminals located within the areas. Alternatively, the network device may be a base station in each communication system, such as an evolved base station (eNB, evolutional Node B) in an LTE system, and also such as a base station (gNB) in a 5G system or an NR system.

It should be understood that a device having a communication function in a network/system in an embodiment of the present application may be referred to as a communication device. The communication device may include a network device and a terminal having a communication function, where the network device and the terminal device may be the specific devices described above, and are not described herein; the communication device may also include other devices in the communication system, such as a network controller, a mobility management entity, and other network entities, which are not limited in this embodiment of the present invention.

It should be understood that the terms "system" and "network" are used interchangeably herein. The term "and/or" is herein merely an association relationship describing an associated object, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

The terms first, second and the like in the description and in the claims, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that embodiments of the present application described herein may be capable of operation in sequences other than those illustrated or described herein, for example. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

The communication system to which the network access method of the embodiment of the present invention is applied may include a terminal, a first network device, and a second network device; the first network device is a network device corresponding to a source cell, for example, a base station corresponding to the source cell; the second network device is a network device corresponding to the target cell, for example, a base station corresponding to the target cell. The first network device and the second network device may be the same network device, for example, the base stations corresponding to the source cell and the target cell are the same base station; or, the first network device and the second network device may be different network devices, that is, the base station corresponding to the source cell and the base station corresponding to the target cell are different base stations.

The network access method of the embodiment is suitable for a cell redirection process of the terminal, namely, the terminal establishes connection with the first network device, and then initiates network access to the second network device (or the target cell) through a cell redirection flow.

In the related technical scheme, the cell redirection process mainly comprises the following steps: the source cell releases the connection of the terminal and indicates the frequency point information of the target access network to the terminal; and the terminal performs network searching, cell selection, system message reading and the like on the target frequency point according to the indicated frequency point information, so as to complete network access. In this way, for the case that the carrier bandwidth of the network side is greater than that of the terminal side, the terminal cannot understand or interpret the system message, and further, the basic information for network access cannot be known, that is, the network access cannot be initiated normally. Based on this, the following embodiments of the present invention are presented.

The embodiment of the invention provides a network access method. Fig. 1 is a flow chart of a network access method according to an embodiment of the present invention; as shown in fig. 1, the method includes:

step 101: the method comprises the steps that first network equipment sends a first system message of a target cell to a terminal, wherein the first system message is used for the terminal to access the target cell, and the first network equipment corresponds to a source cell.

In this embodiment, the first system message of the target cell is sent to the terminal through the first network device (i.e., the source cell), so that the terminal can obtain related information (or related configuration information) for initiating network access in the target cell through the first system message, and the terminal does not need to read the system message from the target cell, thereby solving the problem that the system message of the target cell cannot be read because the bandwidth of the carrier wave on the network side is greater than that on the terminal side in the process of redirecting the cell, and realizing the network access of the target cell in the process of redirecting the cell.

The cells (e.g., source cell, target cell) described in this embodiment may also be referred to as carriers, systems, etc.; illustratively, the source cell may also be referred to as a first cell, a first carrier, a first system, etc., and the target cell may also be referred to as a second cell, a second carrier, a second system, etc.

Alternatively, the system message (such as the first system message) in this embodiment may also be equivalent to the system information, or the system message includes the system information. The system message includes a system information Block (SIB, systemInformation Block) 1. In other embodiments, the system message (e.g., the first system message) may also include any system information for accessing the target cell. Wherein optionally the first system message comprises cell-level related configuration information for accessing the target cell.

In some alternative embodiments, the first network device sends a first system message of the target cell to the terminal, including: the first network device sends a first signaling to the terminal, wherein the first signaling is used for releasing the RRC connection of the terminal; the first signaling includes the first system message.

In this embodiment, the first signaling may be a UE (User Equipment) dedicated signaling, such as RRC connection release signaling or RRC release signaling, etc. The first network device releases the RRC connection of the terminal through the signaling by sending UE-specific signaling to the terminal, and carries the first system message through the signaling.

In some optional embodiments, at least one of the following is further included in the first signaling: the method comprises the steps of a target frequency point, a cell identifier of a target cell related to the target frequency point and a first random access resource of the target cell related to the target frequency point.

In this embodiment, the first network device may further send at least one of the target frequency point, the cell identifier of the target cell related to the target frequency point, and the first random access resource of the target cell related to the target frequency point to the terminal. Optionally, the first network device may send the first signaling to the terminal, where the first signaling includes at least one information of a target frequency point, a cell identifier of a target cell related to the target frequency point, and a first random access resource of the target cell related to the target frequency point.

In this embodiment, in order to accurately issue a first system message of a target cell related to a target frequency point, and at least one of the target frequency point, a cell identifier of the target cell related to the target frequency point, and a first random access resource of the target cell related to the target frequency point, the first network device obtains and/or stores the first system message in advance, and at least one of the target frequency point, the cell identifier of the target cell related to the target frequency point, and the first random access resource, by obtaining and/or storing the information in advance, in a terminal redirection scenario, the first network device may select the information of the corresponding target cell from the information obtained and/or stored in advance, and send the information to the terminal along with a path through UE-specific signaling (such as RRC connection release signaling) so as to avoid a problem that bandwidth is not matched, and the terminal cannot understand or interpret the system message of the target cell.

In some optional embodiments of the invention, before the first network device sends the first signaling to the terminal, the method further comprises: the first network device sends a measurement control message to the terminal, wherein the measurement control message is used for requesting the terminal to measure a synchronous signal block (SSB, synchronization Signal Block) of a target frequency point and requesting the terminal to report a cell identifier of a target cell related to the target frequency point; and the first network equipment receives the cell identification of the target cell sent by the terminal.

In this embodiment, before the first network device sends the first system message of the target cell to the terminal, the first network device may also send a measurement control message to the terminal, where the terminal is required to measure the SSB of the target frequency point, and obtain the cell identifier of the target cell through measurement of the SSB of the target frequency point. The measurement control message may include a target frequency point.

In some alternative embodiments of the invention, the method further comprises: the first network device obtains pre-stored first information including at least one of: the method comprises the steps of identifying a target cell related to a target frequency point, a first system message of the target cell and a first random access resource of the target cell; or, the first network device obtains second information from a second network device based on the cell identification of the target cell; the second information comprises at least one of a cell identifier of a target cell related to a target frequency point, a second system message of the target cell and a first random access resource of the target cell; modifying the second system message to obtain the first system message when the second information comprises the second system message; the second network device is a network device corresponding to the target cell.

In this embodiment, as an implementation manner, the first network device may store the first information for accessing the target cell in advance. As another implementation manner, the first network device may obtain the cell identifier of the target cell reported by the terminal measurement (e.g. by sending a measurement control message to obtain the cell identifier of the target cell sent by the terminal), and after receiving the cell identifier of the target cell, interact with the corresponding second network device to obtain second information related to the target cell, where the second information includes at least one of information of the target cell related to the target frequency point, a second system message of the target cell, and a first random access resource of the target cell; because the carrier bandwidth of the target cell is greater than the carrier bandwidth of the terminal side, that is, the carrier bandwidth of the target cell is greater than the carrier unit of the source cell, after the first network device receives the second system message of the target cell, the second system message needs to be modified to obtain the first system message which can be understood or interpreted by the terminal side.

In some alternative embodiments, the obtaining the second information from the second network device includes: the first network equipment directly communicates with second network equipment to obtain the second information; or the first network device communicates with a second network device through a first AMF and a second AMF to obtain the second information, wherein the first AMF is an AMF accessed by the first network device, and the second AMF is an AMF accessed by the second network device; or the first network device communicates with a second network device through a third AMF to obtain the second information, wherein the third AMF is an AMF which is accessed by the first network device and the second network device together; wherein the second network device is a network device corresponding to the target cell.

In this embodiment, the first network device obtains the second information from the second network device, which may include three ways. Taking the example that the source cell represents the first network device and the target cell represents the second network device, as shown in fig. 2a, communication or information interaction is performed between the first network device (source cell) and the second network device (target cell) through the respective accessed AMFs. For example, the first network device (source cell) sends a first request to the accessed AMF, where the first request is used to obtain the second information, the AMF accessed by the source cell sends the first request to the AMF accessed by the target cell, the AMF accessed by the target cell sends the first request to the second network device (target cell), the second network device (target cell) sends the second information to the accessed AMF, the AMF accessed by the target cell sends the second information to the AMF accessed by the source cell, and the AMF accessed by the source cell sends the second information to the first network device (source cell). As shown in fig. 2b, the first network device (source cell) and the second network device (target cell) interact through a direct connection port, the first network device (source cell) directly sends a first request to the second network device (target cell), and the second network device (target cell) sends second information to the first network device (source cell). As further shown in fig. 2c, in the case where the first network device (source cell) and the second network device (target cell) access the same AMF, the first network device (source cell) and the second network device (target cell) communicate or interact through the AMF, and the specific process is similar to that of fig. 2a, and will not be repeated here.

In some alternative embodiments of the invention, the method further comprises: the first network device identifies the terminal as an on-network problem terminal, and the carrier bandwidth of the on-network problem terminal is smaller than the carrier bandwidth of the target cell.

In this embodiment, before the first network device sends the first system message (or the first signaling) of the target cell to the terminal, the first network device may identify the terminal as an on-network problem terminal. And the carrier bandwidth of the target cell in the carrier bandwidth cell of the network problem terminal, namely the network problem terminal cannot read the system message of the target cell. In other embodiments, the first network device may not identify the terminal with the network problem, but send the first system message of the target cell (further may further include the target frequency point, the cell identifier of the target cell related to the target frequency point, and the first random access resource) to all terminals under the source cell directly through the above procedure to the terminal.

In some alternative embodiments, the identifying, by the first network device, the terminal as an on-network problem terminal includes: the first network equipment receives model information and/or version information sent by the terminal, and determines that the terminal is an online problem terminal based on the model information and/or the version information; or the first network equipment receives the first identification information sent by the terminal, compares the first identification information with the identification information in the information base, and determines that the terminal is an online problem terminal under the condition of successful comparison; or the first network equipment determines that the terminal is an online problem terminal based on the resident frequency point information and/or the measurement information of the terminal.

In this embodiment, as an implementation manner, the first network device may determine that the terminal is an online problem terminal based on model information and/or version information of the terminal. For example, if some types or versions of terminals have a problem that the carrier bandwidth is smaller than the carrier bandwidth of the target cell, so that the system message cannot be read, the first network device may directly determine that the terminal is an on-network problem terminal based on the type information and/or version information of the terminal. As another implementation manner, the first network device stores an information base in advance, wherein the information base includes identification information of a plurality of online problem terminals; the first network equipment receives first identification information sent by the terminal, compares the first identification information with the identification information in the information base, and determines that the terminal is an online problem terminal under the condition of successful comparison. The identification information may be, for example, a subscription permanent identification (SUPI, subscription Permanent Identifier) and/or a subscription hidden identification (sui, subscription Concealed Identifier). As still another embodiment, the first network device determines that the terminal is an on-network problem terminal based on the resident frequency point information and/or measurement information of the terminal, for example, when the first network device finds that the terminal is always resident in a 4G frequency point and frequently reports measurement reports of a 5G specific frequency point after accessing the network (the terminal is not accessed to a cell related to the 5G specific frequency point), the first network device may determine that the terminal is an on-network problem terminal.

Based on the above embodiment, the embodiment of the present invention further provides a network access method. Fig. 3 is a second flow chart of a network access method according to an embodiment of the present invention; as shown in fig. 3, the method includes:

step 201: the terminal receives a first system message of a target cell sent by first network equipment; the first network device is a network device corresponding to a source cell;

step 202: the terminal initiates network access to the target cell based at least on the first system message in case of releasing the connection with the source cell.

In this embodiment, the first system message of the target cell is sent to the terminal through the first network device (i.e., the source cell), so that the terminal can obtain the related information for initiating network access in the target cell through the first system message, and the terminal does not need to read the system message from the target cell, thereby solving the problem that the terminal cannot read the system message of the target cell because the carrier bandwidth of the network side is greater than the carrier bandwidth of the terminal side in the cell redirection process, and further realizing the network access of the target cell in the cell redirection process.

Alternatively, the system message (such as the first system message) in this embodiment may also be equivalent to the system information, or the system message includes the system information. The system message includes SIB1. In other embodiments, the system message (e.g., the first system message) may also include any system information for cell access. Wherein optionally the first system message comprises cell-level related configuration information for accessing the target cell.

In some alternative embodiments, the terminal receives a first system message of a target cell sent by a first network device, including: the terminal receives a first signaling sent by the first network device, wherein the first signaling is used for releasing RRC connection of the terminal; the first signaling includes the first system message.

In this embodiment, the first signaling may be UE-specific signaling, such as RRC connection release signaling or RRC release signaling, etc. The first network device releases the RRC connection of the terminal through the signaling by sending UE-specific signaling to the terminal, and carries the first system message through the signaling.

Optionally, the first signaling further includes at least one of the following: the method comprises the steps of a target frequency point, a cell identifier of a target cell related to the target frequency point and a first random access resource of the target cell related to the target frequency point.

In some optional embodiments, the initiating network access for the target cell based at least on the first system message comprises: the terminal obtains basic information for network access of the target cell based on the first system message, and initiates network access by using the first random access resource based on the basic information.

In this embodiment, the terminal obtains configuration information of a cell level for accessing the target cell through a first system message (e.g., SIB 1), and initiates random access to the target cell by using a first random access resource (e.g., a random access preamble) based on the configuration information.

In some alternative embodiments of the invention, the method further comprises: the terminal receives measurement control information sent by the first network device, wherein the measurement control information is used for requiring the terminal to measure SSB of a target frequency point and requiring the terminal to report a cell identifier of a target cell related to the target frequency point; the terminal measures SSB of the target frequency point, obtains a cell identifier of a target cell related to the target frequency point, and sends the cell identifier of the target cell to the first network equipment. The measurement control message may include a target frequency point.

In this embodiment, the terminal measures the SSB of the target frequency point based on the measurement control information sent by the first network device. The SSBs include, among other things, a primary synchronization signal (PSS, primary Synchronization Signals), a secondary synchronization signal (SSS, secondary Synchronization Signals), and a physical broadcast channel (PBCH, physical Broadcast Channel). And obtaining the cell identification of the target cell related to the target frequency point by measuring or monitoring the SSB.

In some alternative embodiments, the method further comprises: the terminal sends model information and/or version information to the first network equipment, wherein the model information and/or version information is used for judging whether the terminal is an online problem terminal or not; or the terminal sends first identification information to the first network equipment, wherein the first identification information is used for judging whether the terminal is an online problem terminal or not.

In some alternative embodiments of the invention, the method further comprises: and under the condition that the terminal accesses the target cell, the terminal receives third information sent by the second network equipment, wherein the third information comprises configuration information of a special carrier bandwidth matched with the bandwidth capability of the terminal.

In this embodiment, the information included in the first system message is configuration information for a cell, and the third information is configuration information for a UE, including configuration information of a dedicated carrier bandwidth matched with the bandwidth capability of the terminal. After the terminal accesses the target cell, the terminal can work normally according to the configuration of the third information.

Based on the above embodiment, the embodiment of the present invention further provides a network access method. Fig. 4 is a flowchart of a network access method according to an embodiment of the present invention; as shown in fig. 4, the method includes:

step 301: the second network device sends second information to the first network device, the second information including at least one of:

the second network device is a network device corresponding to the target cell, and the first network device is a network device corresponding to a source cell.

In this embodiment, a first random access resource and a second random access resource may be configured for a target cell related to a target frequency point; the first random access resource is used for accessing the network problem terminal, and the second random access resource is used for accessing the common terminal, so that the terminal can be determined to be the network problem terminal when the terminal initiates random access by using the first random access resource. The first random access resource and the second random access resource may be, for example, code domain resources, such as a random access Preamble (Preamble).

Optionally, the second network device sends second information to the first network device, including: the second network device receives a first request from the first network device, wherein the first request can comprise information of a target cell, determines second information based on the information of the target cell, and sends the second information to the second network device.

In this embodiment, the second network device may trigger sending the second information to the first network device based on the first request from the first network device. The first request may include information of the target cell, where the information of the target cell may be, for example, an identifier of the target cell, and the second network device may determine, based on the identifier of the target cell, a corresponding second system message and/or random access resource (first random access resource), and send second information including the foregoing to the first network device.

In some alternative embodiments, the second network device sends second information to the first network device, including: the second network device directly sends the second information to the first network device; or the second network device sends the second information to the first network device through a second AMF and a first AMF, wherein the first AMF is an AMF accessed by the first network device, and the second AMF is an AMF accessed by the second network device; or the second network device sends the second information to the first network device through a third AMF, wherein the third AMF is an AMF which is accessed by the first network device and the second network device together.

In some alternative embodiments of the invention, the method further comprises: and under the condition that the terminal accesses the target cell, the second network equipment sends third information to the terminal, wherein the third information comprises configuration information of a special carrier bandwidth matched with the bandwidth capability of the terminal.

The network access method according to the embodiment of the present invention will be described in detail with reference to a specific example.

Fig. 5 is an interactive flow diagram of a network access method according to an embodiment of the present invention; as shown in fig. 5, the method includes:

step 401: the source cell transmits a measurement control message to the terminal, requires the terminal to measure SSB of the target frequency point, and reports the identification of the target cell related to the target frequency point.

In this embodiment, optionally, before the source cell issues the measurement control message to the terminal, it may identify whether the terminal is a network problem terminal.

Step 402: and the terminal performs SSB measurement of the target frequency point and reports the cell identification of the target cell related to the target frequency point.

Here, the terminal is configured to perform search and synchronization of the target cell by SSB measurement on the target frequency point, and obtain the cell identity of the target cell related to the target frequency point by acquiring the SSB.

Step 403: the source cell releases the connection of the terminal and sends a UE special signaling to the terminal, wherein the UE special signaling can also comprise a cell identifier of a target cell related to the target frequency point, SIB1 of the target cell and random access resources of the target cell besides the target frequency point.

Wherein SIB1 of the target cell corresponds to the first system message in the foregoing embodiment; the random access resource of the target cell corresponds to the first random access resource in the foregoing embodiment.

Step 404: and the terminal searches the network at the target frequency point, completes the synchronization with the target cell, and initiates network access by adopting the indicated random access resource.

Further, after the terminal accesses the target cell, the target cell issues a dedicated carrier bandwidth configuration matching the bandwidth capability of the terminal (the terminal with the network problem) aiming at the terminal, so that the terminal works normally.

The embodiment of the invention also provides a network access device which is applied to the first network equipment, wherein the first network equipment is the network equipment corresponding to the source cell. Fig. 6 is a schematic diagram of a composition structure of a network access device according to an embodiment of the present invention; as shown in fig. 6, the apparatus includes: a first communication unit 11, configured to send a first system message of a target cell to a terminal, where the first system message is used for the terminal to access the target cell.

In some alternative embodiments of the present invention, the first communication unit 11 is configured to send a first signaling to the terminal, where the first signaling is used to release the RRC connection of the terminal; the first signaling includes the first system message.

In some optional embodiments of the present invention, at least one of the following is further included in the first signaling:

In some optional embodiments of the present invention, the first communication unit 11 is further configured to send, before sending the first signaling to the terminal, a measurement control message to the terminal, where the measurement control message is used to request the terminal to measure the SSB of the target frequency point, and request the terminal to report the cell identifier of the target cell related to the target frequency point; and the method is also used for receiving the cell identification of the target cell sent by the terminal.

In some optional embodiments of the invention, the apparatus further comprises a first processing unit 12, configured to identify the terminal as an on-network problem terminal, where a carrier bandwidth of the on-network problem terminal is smaller than a carrier bandwidth of the target cell.

In some optional embodiments of the present invention, the first processing unit 12 is configured to receive, by using the first communication unit 11, model information and/or version information sent by the terminal, and determine, based on the model information and/or version information, that the terminal is an online problem terminal; or, the first communication unit 11 receives the first identification information sent by the terminal, compares the first identification information with the identification information in the information base, and determines that the terminal is a network problem terminal under the condition of successful comparison; or determining that the terminal is an online problem terminal based on the resident frequency point information and/or the measurement information of the terminal.

In some alternative embodiments of the invention, the apparatus further comprises a first processing unit 12 further for obtaining pre-stored first information, the first information comprising at least one of the following information: the method comprises the steps of identifying a target cell related to a target frequency point, a first system message of the target cell and a first random access resource of the target cell; or, for obtaining, by the first communication unit 11, second information from a second network device based on the cell identity of the target cell; the second information comprises at least one of a cell identifier of a target cell related to a target frequency point, a second system message of the target cell and a first random access resource of the target cell; modifying the second system message to obtain the first system message when the second information comprises the second system message; the second network device is a network device corresponding to the target cell.

In some optional embodiments of the present invention, the first communication unit 11 is configured to communicate directly with a second network device to obtain the second information; or, the second information is obtained through communication between a first AMF and a second network device, wherein the first AMF is an AMF accessed by the first network device, and the second AMF is an AMF accessed by the second network device; or, the second information is obtained through communication between a third AMF and a second network device, wherein the third AMF is an AMF which is accessed by the first network device and the second network device together; wherein the second network device is a network device corresponding to the target cell.

In the embodiment of the present invention, the first processing unit 12 in the device may be implemented in practical application by a central processing unit (CPU, central Processing Unit), a digital signal processor (DSP, digital SignalProcessor), a micro control unit (MCU, microcontroller Unit) or a programmable gate array (FPGA, field-Programmable Gate Array); the first communication unit 11 in the device can be realized in practical application through a communication module (including a basic communication suite, an operating system, a communication module, a standardized interface, a standardized protocol and the like) and a receiving and transmitting antenna.

The embodiment of the invention also provides a network access device which is applied to the terminal. Fig. 7 is a schematic diagram of a second component structure of a network access device according to an embodiment of the present invention; as shown in fig. 7, the apparatus includes: a second communication unit 21 and a second processing unit 22; wherein,

the second communication unit 21 is configured to receive a first system message of a target cell sent by a first network device; the first network device is a network device corresponding to a source cell;

the second processing unit 22 is configured to initiate network access based on at least the first system message in case of releasing the connection with the source cell.

In some optional embodiments of the present invention, the second communication unit 21 is configured to receive a first signaling sent by the first network device, where the first signaling is used to release the RRC connection of the terminal; the first signaling includes the first system message.

In some alternative embodiments of the present invention, the second processing unit 22 is configured to obtain basic information for network access of the target cell based on the first system message, and initiate network access based on the basic information and using the first random access resource.

In some optional embodiments of the present invention, the second communication unit 21 is further configured to receive measurement control information sent by the first network device, where the measurement control information is used to request the terminal to measure SSB of a target frequency point, and request the terminal to report a cell identifier of a target cell related to the target frequency point;

the second processing unit 22 is configured to measure SSB of the target frequency point, and obtain a cell identifier of a target cell related to the target frequency point;

the second communication unit 21 is further configured to send a cell identifier of the target cell to the first network device.

In some optional embodiments of the present invention, the second communication unit 21 is further configured to send model information and/or version information to the first network device, where the model information and/or version information is used to determine whether the terminal is an online problem terminal; or sending first identification information to the first network device, wherein the first identification information is used for judging whether the terminal is an online problem terminal.

In the embodiment of the present invention, the second processing unit 22 in the device may be implemented by CPU, DSP, MCU or FPGA in practical application; the second communication unit 21 in the device can be realized in practical application through a communication module (including a basic communication suite, an operating system, a communication module, a standardized interface, a standardized protocol and the like) and a receiving and transmitting antenna.

The embodiment of the invention also provides a network access device which is applied to the second network equipment, wherein the second network equipment is the network equipment corresponding to the target cell. Fig. 8 is a schematic diagram of a third component structure of a network access device according to an embodiment of the present invention; as shown in fig. 8, the apparatus includes: a third communication unit 31 for sending second information to the first network device, the second information comprising at least one of the following information:

In some alternative embodiments of the present invention, the third communication unit 31 is configured to send the second information directly to the first network device; or sending the second information to the first network device through a second AMF and a first AMF, wherein the first AMF is an AMF accessed by the first network device, and the second AMF is an AMF accessed by the second network device; or sending the second information to the first network device through a third AMF, wherein the third AMF is an AMF accessed by the first network device and the second network device together.

In some optional embodiments of the invention, the third communication unit 31 is further configured to send third information to the terminal, where the terminal accesses the target cell, where the third information includes configuration information of a dedicated carrier bandwidth that matches a bandwidth capability of the terminal.

In the embodiment of the present invention, the third communication unit 31 in the device may be implemented in practical application by a communication module (including a basic communication suite, an operating system, a communication module, a standardized interface, a protocol, etc.) and a transceiver antenna.

The embodiment of the invention also provides a communication device, which is the first network device, the terminal or the second network device in the embodiment. Fig. 9 is a schematic diagram of a hardware composition structure of a communication device according to an embodiment of the present invention, as shown in fig. 9, the communication device includes a memory 42, a processor 41, and a computer program stored in the memory 42 and capable of running on the processor 41, where the steps of the network access method according to the embodiment of the present invention applied to the first network device are implemented when the processor 41 executes the program; or, the processor 41 implements the steps of the network access method of the embodiment of the present invention applied to the terminal when executing the program; alternatively, the processor 41 implements the steps of the network access method of the embodiment of the present invention applied to the second network device when executing the program.

Optionally, the communication device further comprises at least one network interface 43. Wherein the various components of the communication device are coupled together by a bus system 44. It is understood that the bus system 44 is used to enable connected communications between these components. The bus system 44 includes a power bus, a control bus, and a status signal bus in addition to the data bus. But for clarity of illustration the various buses are labeled as bus system 44 in fig. 9.

It will be appreciated that memory 42 may be volatile memory or nonvolatile memory, and may include both volatile and nonvolatile memory. Wherein the nonvolatile Memory may be Read Only Memory (ROM), programmable Read Only Memory (PROM, programmable Read-Only Memory), erasable programmable Read Only Memory (EPROM, erasable ProgrammableRead-Only Memory), electrically erasable programmable Read Only Memory (EEPROM, electricallyErasable Programmable Read-Only Memory), magnetic random access Memory (FRAM, ferromagnetic Random Access Memory), flash Memory (Flash Memory), magnetic surface Memory, optical disk, or compact disk Read Only Memory (CD-ROM, compact Disc Read-Only Memory); the magnetic surface memory may be a disk memory or a tape memory. The volatile memory may be random access memory (RAM, random Access Memory), which acts as external cache memory. By way of example, and not limitation, many forms of RAM are available, such as static random access memory (SRAM, static Random Access Memory), synchronous static random access memory (SSRAM, synchronous Static Random Access Memory), dynamic random access memory (DRAM, dynamic Random Access Memory), synchronous dynamic random access memory (SDRAM, synchronous Dynamic Random Access Memory), double data rate synchronous dynamic random access memory (ddr SDRAM, double Data Rate Synchronous Dynamic Random AccessMemory), enhanced synchronous dynamic random access memory (ESDRAM, enhanced SynchronousDynamic Random Access Memory), synchronous link dynamic random access memory (SLDRAM, syncLink Dynamic Random Access Memory), direct memory bus random access memory (DRRAM, direct Rambus Random Access Memory). The memory 42 described in embodiments of the present invention is intended to comprise, without being limited to, these and any other suitable types of memory.

The method disclosed in the above embodiment of the present invention may be applied to the processor 41 or implemented by the processor 41. The processor 41 may be an integrated circuit chip with signal processing capabilities. In implementation, the steps of the above method may be performed by integrated logic circuits of hardware in the processor 41 or by instructions in the form of software. The processor 41 may be a general purpose processor, DSP, or other programmable logic device, discrete gate or transistor logic device, discrete hardware components, or the like. Processor 41 may implement or perform the methods, steps and logic blocks disclosed in embodiments of the present invention. The general purpose processor may be a microprocessor or any conventional processor or the like. The steps of the method disclosed in the embodiment of the invention can be directly embodied in the hardware of the decoding processor or can be implemented by combining hardware and software modules in the decoding processor. The software modules may be located in a storage medium in a memory 42 and the processor 41 reads information in the memory 42 to perform the steps of the method described above in connection with its hardware.

In an exemplary embodiment, the communication Device may be implemented by one or more application specific integrated circuits (ASIC, application Specific Integrated Circuit), DSP, programmable Logic Device (PLD, programmable Logic Device), complex programmable Logic Device (CPLD, complexProgrammable Logic Device), FPGA, general purpose processor, controller, MCU, microprocessor, or other electronic component for performing the aforementioned methods.

In an exemplary embodiment, the present invention also provides a computer readable storage medium, such as a memory 42, comprising a computer program executable by the processor 41 of the communication device to perform the steps of the method described above. The computer readable storage medium may be FRAM, ROM, PROM, EPROM, EEPROM, flash Memory, magnetic surface Memory, optical disk, or CD-ROM; but may be a variety of devices including one or any combination of the above memories.

The embodiment of the invention also provides a computer readable storage medium, on which a computer program is stored, which when executed by a processor implements the steps of the network access method of the embodiment of the invention applied to the first network device; or, when the program is executed by the processor, the steps of the network access method applied to the terminal in the embodiment of the invention are realized; or, the program when executed by the processor implements the steps of the network access method of the embodiment of the present invention applied to the second network device.

The methods disclosed in the several method embodiments provided in the present application may be arbitrarily combined without collision to obtain a new method embodiment.

The features disclosed in the several product embodiments provided in the present application may be combined arbitrarily without conflict to obtain new product embodiments.

The features disclosed in the several method or apparatus embodiments provided in the present application may be arbitrarily combined without conflict to obtain new method embodiments or apparatus embodiments.

In the several embodiments provided in this application, it should be understood that the disclosed apparatus and method may be implemented in other ways. The above described device embodiments are only illustrative, e.g. the division of the units is only one logical function division, and there may be other divisions in practice, such as: multiple units or components may be combined or may be integrated into another system, or some features may be omitted, or not performed. In addition, the various components shown or discussed may be coupled or directly coupled or communicatively coupled to each other via some interface, whether indirectly coupled or communicatively coupled to devices or units, whether electrically, mechanically, or otherwise.

The units described as separate units may or may not be physically separate, and units displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units; some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in each embodiment of the present invention may be integrated in one processing unit, or each unit may be separately used as one unit, or two or more units may be integrated in one unit; the integrated units may be implemented in hardware or in hardware plus software functional units.

Those of ordinary skill in the art will appreciate that: all or part of the steps for implementing the above method embodiments may be implemented by hardware associated with program instructions, where the foregoing program may be stored in a computer readable storage medium, and when executed, the program performs steps including the above method embodiments; and the aforementioned storage medium includes: a removable storage device, ROM, RAM, magnetic or optical disk, or other medium capable of storing program code.

Alternatively, the above-described integrated units of the present invention may be stored in a computer-readable storage medium if implemented in the form of software functional modules and sold or used as separate products. Based on such understanding, the technical solutions of the embodiments of the present invention may be embodied in essence or a part contributing to the prior art in the form of a software product stored in a storage medium, including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the methods described in the embodiments of the present invention. And the aforementioned storage medium includes: a removable storage device, ROM, RAM, magnetic or optical disk, or other medium capable of storing program code.

The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A network access method, the method comprising:

2. The method of claim 1, wherein the first network device sending a first system message of the target cell to the terminal comprises:

the first network device sends a first signaling to the terminal, wherein the first signaling is used for releasing the Radio Resource Control (RRC) connection of the terminal; the first signaling includes the first system message.

3. The method of claim 2, wherein the first signaling further comprises at least one of:

4. A method according to claim 3, wherein before the first network device sends the first signaling to the terminal, the method further comprises:

the first network device sends a measurement control message to the terminal, wherein the measurement control message is used for requesting the terminal to measure a synchronous signal block SSB of a target frequency point and requesting the terminal to report a cell identifier of a target cell related to the target frequency point;

5. The method according to any one of claims 1 to 4, further comprising:

the first network device identifies the terminal as an on-network problem terminal, and the carrier bandwidth of the on-network problem terminal is smaller than the carrier bandwidth of the target cell.

6. The method of claim 5, wherein the first network device identifying the terminal as an on-network problem terminal comprises:

7. The method according to claim 4, wherein the method further comprises:

the first network device obtains pre-stored first information including at least one of: the method comprises the steps of identifying a target cell related to a target frequency point, a first system message of the target cell and a first random access resource of the target cell; or,

8. The method of claim 7, wherein obtaining the second information from the second network device comprises:

the first network equipment communicates with second network equipment through a first access and mobility management function (AMF) and a second AMF to obtain the second information, wherein the first AMF is the AMF accessed by the first network equipment, and the second AMF is the AMF accessed by the second network equipment; or,

9. A network access method, the method comprising:

10. The method of claim 9, wherein the terminal receiving the first system message of the target cell sent by the first network device comprises:

the terminal receives a first signaling sent by the first network device, wherein the first signaling is used for releasing RRC connection of the terminal; the first signaling includes the first system message.

11. The method of claim 10, wherein the first signaling further comprises at least one of:

12. The method of claim 11, wherein the initiating network access for the target cell based at least on the first system message comprises:

13. The method according to any one of claims 9 to 12, further comprising:

14. The method according to any one of claims 9 to 12, further comprising:

the terminal sends model information and/or version information to the first network equipment, wherein the model information and/or version information is used for judging whether the terminal is an online problem terminal or not; or,

15. A network access method, the method comprising:

16. The method of claim 15, wherein the second network device sending the second information to the first network device comprises:

17. The method of claim 15, wherein the method further comprises:

and under the condition that the terminal accesses the target cell, the second network equipment sends third information to the terminal, wherein the third information comprises configuration information of a special carrier bandwidth matched with the bandwidth capability of the terminal.

18. A network access device, wherein the device is applied to a first network device, and the first network device is a network device corresponding to a source cell; the device comprises: the first communication unit is used for sending a first system message of a target cell to the terminal, wherein the first system message is used for the terminal to access the target cell.

19. A network access device, the device being applied in a terminal, the device comprising: a second communication unit and a second processing unit; wherein,

20. A network access device, wherein the device is applied to a second network device, and the second network device is a network device corresponding to a target cell; the device comprises: a third communication unit for transmitting second information to the first network device, the second information comprising at least one of:

21. A computer readable storage medium having stored thereon a computer program, characterized in that the program when executed by a processor realizes the steps of the method according to any of claims 1 to 8; or,

which program, when being executed by a processor, carries out the steps of the method according to any one of claims 9 to 14; or,

the program when executed by a processor implementing the steps of the method of any of claims 15 to 17.

22. A communication device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the processor implements the steps of the method of any of claims 1 to 8 when the program is executed; or,

the processor implementing the steps of the method of any one of claims 9 to 14 when executing the program; or,

the processor, when executing the program, implements the steps of the method of any one of claims 15 to 17.