WO2020097884A1

WO2020097884A1 - Method, device, and system for querying capability information of terminal

Info

Publication number: WO2020097884A1
Application number: PCT/CN2018/115739
Authority: WO
Inventors: 王冠; 王振东; 万利红
Original assignee: 华为技术有限公司
Priority date: 2018-11-15
Filing date: 2018-11-15
Publication date: 2020-05-22
Also published as: CN112534846A

Abstract

A method, device, and system for querying capability information of a terminal, relating to the technical field of communications, for use in solving the existing problem of large air interface overhead when querying the capability information of a terminal. The method comprises: an access network device obtains a first key value corresponding to a terminal (401); the access network device queries a correspondence table comprising at least one key value and at least one piece of capability information corresponding to the at least one key value (402); if capability information corresponding to the first key value exists in the correspondence table, the access network device determines the capability information corresponding to the first key value as capability information of the terminal (403).

Description

Method, equipment and system for querying capability information of terminal

Technical field

Embodiments of the present application relate to the field of communication technologies, and in particular, to a method, device, and system for querying terminal capability information.

Background technique

At present, in the communication system, the base station can query the capability information of the terminal through the query process shown in FIG. 1. For example, as shown in FIG. 1, the base station may send a terminal capability query (UE capability inquiry) request to the terminal. After receiving the terminal capability query request sent by the base station, the terminal carries the terminal capability information (UE capability information) in a message Sent to the base station.

It can be seen from FIG. 1 that the base station needs to query the capability information of the terminal through information interaction with the terminal. This query method consumes more air interface resources. In particular, as the frequency bands and frequency band combinations supported by the terminal increase in the future, the terminal's capability information gradually increases, and the terminal may need to be sent multiple times (two or more times) to send all the capability information to Base station, the air interface has a large overhead.

Summary of the invention

Embodiments of the present application provide a method, device, and system for querying terminal capability information, so as to solve the problem of large time and air interface overhead for querying terminal capability information.

To achieve the above purpose, the embodiments of the present application adopt the following technical solutions:

In a first aspect, a method for querying terminal capability information is provided. The method includes: an access network device acquiring a first key value corresponding to a terminal, and the query includes at least one key value and at least one capability corresponding to the at least one key value Correspondence table of information; if there is capability information corresponding to the first key value in the correspondence table, the access network device determines the capability information corresponding to the first key value as the capability information of the terminal.

Based on the method provided in the first aspect, the first key value corresponding to the terminal can be obtained, and the obtained first key value is an index. A corresponding relationship table including key values and capability information is queried, and the corresponding relationship table is obtained with The capability information corresponding to the first key value is used as the capability information of the terminal. In this way, the capability information of the terminal can be queried through the correspondence table, without using the existing query process, and the capability information sent by the terminal is received through the air interface, which reduces the air interface overhead.

In a possible design, the correspondence table is stored on the access network device. In this way, the access network device can query the capability information of the terminal from the locally stored correspondence table, which reduces the query power consumption.

In a possible design, the first key value is the IMEISV of the terminal; the access network device acquiring the first key value corresponding to the terminal includes: the access network device acquiring the first key value locally; or, the access network device The terminal obtains the first key value; or, the access network device obtains the first key value from the core network device. In this way, the existing identifier can be used as the first key value corresponding to the terminal, reducing the cost and power consumption caused by calculating the first key value corresponding to the terminal, and the IMEISV of the terminal can be obtained from the local or terminal or core network device, The flexibility of acquiring the IMEISV of the terminal is improved.

In a possible design, the first key value is a value generated by the terminal according to the capability information of the terminal; the access network device acquiring the first key value corresponding to the terminal includes: the access network device acquiring the first key value from the terminal; or , The access network device obtains the first key value from the core network device. In this way, the key value corresponding to the terminal capability information can be dynamically calculated according to an algorithm, reducing the cost of the terminal maintaining the mapping relationship between the terminal key value and the terminal capability information, and at the same time, the calculation can be obtained from the terminal or the core network device The key value of the terminal comes out, which improves the flexibility of obtaining the key value of the terminal.

In a possible design, the method further includes: if the capability information corresponding to the first key value does not exist in the correspondence table, the access network device sends a first request to the terminal, and the first request is used to request the capability of the terminal Information; the access network device receives the terminal capability information sent by the terminal, and stores the first key value and the terminal capability information in a correspondence table. In this way, when the capability information corresponding to the first key value of the terminal does not exist in the correspondence table, the existing query method is used to obtain the capability information of the terminal from the terminal, and at the same time, the acquired capability information of the terminal is matched with the first The key value correspondence is stored in the correspondence relationship table, so that when the capability information of the terminal whose key value is the first key value is subsequently queried, the capability information of other terminals can be directly queried from the correspondence relationship table.

In a second aspect, the present application provides a communication device, which may be an access network device or a chip or a system-on-chip in the access network device. The communication device may implement the functions performed by the access network device in the above aspects or possible designs, and the functions may be implemented by hardware, or may be implemented by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above functions. For example, the communication device may include: an acquisition unit and an inquiry unit;

An obtaining unit, configured to obtain the first key value corresponding to the terminal;

The query unit is used to query a correspondence table. If the capability information corresponding to the first key value exists in the correspondence table, the access network device determines the capability information corresponding to the first key value as Describe the terminal's capability information;

Wherein, the correspondence table includes at least one key value and at least one capability information corresponding to the at least one key value.

The specific implementation manner of the communication device may refer to the behavior function of the access network device in the method for querying the capability information of the terminal provided in the first aspect or any possible design of the first aspect, which will not be repeated here. Therefore, the provided communication device can achieve the same beneficial effects as the first aspect or any possible design of the first aspect.

In a third aspect, a communication device is provided, including: a processor and a memory; the memory is used to store computer-executed instructions, and when the communication device is running, the processor executes the computer-executed instructions stored in the memory, so that the The communication device executes the method for querying the capability information of the terminal as described in the first aspect or any possible design of the first aspect.

According to a fourth aspect, a computer-readable storage medium is provided, in which instructions are stored in the computer-readable storage medium, which when executed on a computer, enables the computer to execute the first aspect or any of the above aspects Design the method for querying the capability information of the terminal.

According to a fifth aspect, there is provided a computer program product containing instructions which, when run on a computer, enable the computer to execute any of the first aspect or any possible design of the above aspect to query the capability information of the terminal method.

According to a sixth aspect, a chip system is provided. The chip system includes a processor and a communication interface for supporting a communication device to implement the functions involved in the above aspects, for example, the processor obtains a first key value corresponding to a terminal, and the query includes at least A correspondence table of a key value and at least one capability information corresponding to the at least one key value, if the capability information corresponding to the first key value exists in the correspondence table, the first key value is mapped Is determined as the capability information of the terminal. In a possible design, the chip system further includes a memory, which is used to store necessary program instructions and data of the communication device. The chip system may be composed of chips, or may include chips and other discrete devices.

The technical effects brought by any one of the design methods in the third aspect to the sixth aspect can be referred to the technical effects brought by the above-mentioned first aspect or any possible design of the first aspect, and will not be repeated here.

In a seventh aspect, an embodiment of the present application further provides a method for querying terminal capability information. The method includes: the terminal obtains a first key value for querying the terminal capability information; the terminal sends the first key value to an access network device ; Among them, the first key value. Based on the method provided in the seventh aspect, the terminal may send its corresponding key value to the access network device, so that the access network device uses the terminal's key value as an index to query the correspondence table including the key value and capability information to obtain the terminal Ability information.

In a possible design, the first key value is the IMEISV of the terminal. In this way, the existing identifier can be used as the first key value corresponding to the terminal, which reduces the cost and power consumption caused by calculating the first key value corresponding to the terminal.

In a possible design, the first key value is a value generated by the terminal according to the capability information of the terminal. In this way, the key value corresponding to the capability information of the terminal can be dynamically calculated according to an algorithm, and the cost of the terminal maintaining the mapping relationship between the key value of the terminal and the capability information of the terminal can be reduced.

In a possible design, if the capability information corresponding to the first key value does not exist in the correspondence table, the method further includes: the terminal receives the first request sent by the access network device; the terminal sends the terminal to the access network device Ability information. In this way, when there is no capability information corresponding to the first key value of the terminal in the correspondence table, the terminal sends its own capability information to the access network device by using an existing query method, so that the access network device will obtain the acquired terminal The capability information corresponds to the first key value corresponding to the terminal and is stored in the correspondence table, so that subsequent query of the capability information of the terminal whose key value is the first key value can directly query the capability information of other terminals from the correspondence table .

In an eighth aspect, the present application provides a communication device, which may be a terminal or a chip or a system-on-chip in the terminal. The communication device may implement the seventh aspect or any possible design of the seventh aspect. Function, the function can be realized by hardware, and can also be realized by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above functions. For example, the communication device may include: an acquiring unit and a sending unit;

An obtaining unit, configured to obtain a first key value for querying the capability information of the terminal;

The sending unit is configured to send the first key value to the access network device.

Wherein, for the specific implementation of the communication device, reference may be made to the seventh aspect or any possible design of the seventh aspect to provide a method for querying the capability information of the terminal, which will not be repeated here. Therefore, the provided communication device can achieve the same beneficial effects as the seventh aspect or any possible design of the seventh aspect.

In a ninth aspect, a communication device is provided, including: a processor and a memory; the memory is used to store computer-executed instructions, and when the communication device is running, the processor executes the computer-executed instructions stored in the memory, so that the The communication device executes the method for querying the capability information of the terminal as described in the seventh aspect or any possible design of the seventh aspect.

According to a tenth aspect, a computer-readable storage medium is provided, in which instructions are stored in a computer-readable storage medium, which when executed on a computer, enables the computer to perform the seventh aspect or any of the above aspects Design the method for querying the capability information of the terminal.

According to an eleventh aspect, there is provided a computer program product containing instructions which, when run on a computer, enable the computer to execute the above-mentioned seventh aspect or any of the possible designs of the above-mentioned aspects to query the capability information of the terminal Methods.

In a twelfth aspect, a chip system is provided. The chip system includes a processor and a communication interface for supporting a communication device to implement the functions involved in the above aspects, for example, the processor obtains the first information for querying the capability information of the terminal. The key value sends the first key value to the access network device through the communication interface. In a possible design, the chip system further includes a memory, which is used to store necessary program instructions and data of the communication device. The chip system may be composed of chips, or may include chips and other discrete devices.

For the technical effects brought by any of the design methods in the ninth aspect to the twelfth aspect, reference may be made to the technical effects brought by the above seventh aspect or any possible design of the seventh aspect, which will not be repeated.

According to a thirteenth aspect, there is provided a system for querying the capability information of a terminal, including the access network device according to any one of the second aspect to the sixth aspect and the any one of the eighth aspect to the twelfth aspect The mentioned terminal.

BRIEF DESCRIPTION

Figure 1 is the process of querying the capability information of the existing terminal;

2 is a simplified schematic diagram of a system architecture provided by an embodiment of this application;

3 is a schematic diagram of the composition of a communication device provided by an embodiment of the present application;

FIG. 4 is a flowchart of a method for querying terminal capability information provided by an embodiment of the present application;

5 is a schematic diagram of the composition of a communication device 50 provided by an embodiment of the present application;

FIG. 6 is a schematic diagram of the composition of a communication device 60 provided by an embodiment of the present application.

detailed description

The idea of the embodiment of the present application is to store the capability information supported by at least one terminal category (UE category) with at least one key value (eg, stored in an access network device), and the key value corresponds to the terminal, When the access network device queries the capability information of a terminal, the access network device can obtain the key corresponding to the terminal, query the stored capability information and key value correspondence table to obtain the capability information corresponding to the key, and query The obtained capability information is determined to be the capability information of the terminal. Thus, the terminal does not need to send its capability information to the access network device through the air interface, which reduces the air interface overhead.

The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.

The method for querying the capability information of the terminal provided in the embodiments of the present application may be applied to the communication system shown in FIG. 2. The communication system may be a cellular communication system or a universal mobile telecommunication system terrestrial wireless access network (universal mobile telecommunication system) terrestrial radio access network, UTRAN) system, or evolved UMTS terrestrial radio Access Network (E-UTRAN) system, or long Term Evolution (long term evolution, LTE) systems, but also for the fifth-generation (5 ^th generation, 5G) mobile The communication system or the new radio (NG) system may also be other mobile communication systems without restriction. As shown in FIG. 2, the communication system may include an access network device and a terminal. The access network device may query the terminal's capability information through the method provided in the embodiments of the present application, and then allocate appropriate communication resources to the terminal according to the terminal's capability information. (Eg frequency resources and / or time domain resources, etc.). In the embodiments of the present application, the terminal's capability information may be referred to as the terminal's wireless access capability, and the terminal's capability information may include, but is not limited to: the number of carriers supported by the terminal, the terminal's access capability (eg, the ability to access UTRAN Or the ability to access E-UTRAN or the ability to access LTE, etc.), the protocol version supported by the terminal, the characteristics of the terminal (eg, support for space division multiplexing, etc.), the frequency bands and frequency band combinations supported by the terminal. Exemplarily, terminals that support the same capability information can be classified into the same terminal category (or UE category), for example, the capability information of each terminal in the same batch of multiple terminals produced by the same manufacturer may be The same, these terminals can be classified in the same UE category; the capability information of each terminal in multiple terminals of the same model and installed with the same software version may be the same, and these terminals can be classified in the same UE category.

Exemplarily, the terminal in FIG. 2 corresponds to a key value, and for the specific description of the key value, refer to the description in the embodiment corresponding to FIG. 4. Specifically, the terminal may be referred to as terminal equipment (UE) or user equipment (UE) or mobile station (MS) or mobile terminal (MT), etc., and may be deployed on the water ( (Such as ships, etc.); can also be deployed in the air (such as aircraft, balloons and satellites, etc.). Specifically, the terminal in FIG. 2 may be a mobile phone, a tablet computer, or a computer with wireless transceiver function. The terminal may also be a virtual reality (VR) terminal, an augmented reality (AR) terminal, a wireless terminal in industrial control, a wireless terminal in unmanned driving, a wireless terminal in telemedicine, or a smart grid. Wireless terminals, wireless terminals in smart cities, wireless terminals in smart homes, etc. In the embodiment of the present application, the device for realizing the function of the terminal may be a terminal, or may be a device capable of supporting the terminal to realize the function, such as a chip system. In the embodiment of the present application, the chip system may be composed of a chip, and may also include a chip and other discrete devices. In the technical solutions provided by the embodiments of the present application, the technical solution provided by the embodiments of the present application is described by taking an example in which the device for implementing the functions of the terminal is a terminal.

The access network device in FIG. 2 may be referred to as a network device. The access network device may store the correspondence between the capability information supported by the UE category and the key value. The access network device is mainly used to implement wireless physical control functions, Functions such as resource scheduling and wireless resource management, wireless access control, mobility management, and querying terminal capability information. Specifically, the access network device may be an access network (AN) / radio access network (RAN) device, or may be a device composed of multiple 5G-AN / 5G-RAN nodes It can also be a base station (nodeB, NB), an evolutionary base station (evolution nodeB, eNB), a next-generation base station (generation nodeB, gNB), a transmission and reception point (TRP), and a transmission point (TP) And any of some other access nodes. In the embodiment of the present application, the apparatus for implementing the function of the access network device may be an access network device, or may be an apparatus capable of supporting the access network device to realize the function, such as a chip system. In the technical solutions provided by the embodiments of the present application, the technical solution provided by the embodiments of the present application is described by taking an example in which the apparatus for realizing the function of the access network device is an access network device.

Exemplarily, in the system shown in FIG. 2, when the access network device needs to query the capability information of a terminal, the key value corresponding to the terminal can be obtained from the correspondence between the capability information supported by the UE category and the key value Query the capability information corresponding to the key value, and use the queried capability information as the capability information of the terminal. Specifically, for the method, reference may be made to the embodiment corresponding to FIG. 4.

It should be noted that FIG. 2 is only an exemplary frame diagram, and the number of devices included in FIG. 2 is not limited, and in addition to the functional nodes shown in FIG. 2, the system described in FIG. 2 may include other nodes, such as a core network. Devices, gateway devices, application servers, etc. are not restricted.

In a specific implementation, each device shown in FIG. 2 may be provided with the components shown in FIG. 3. FIG. 3 is a schematic diagram of the composition of a communication device according to an embodiment of the present application. As shown in FIG. 3, the communication device 300 includes at least one processor 301, a communication line 302, and at least one communication interface 303; further, Included memory 304. Among them, the processor 301, the memory 304 and the communication interface 303 can be connected via a communication line 302. In the embodiments of the present application, at least one may be one, two, three, or more, and the embodiments of the present application are not limited.

The processor 301 may be a central processing unit (CPU), a general-purpose processor network processor (NP), a digital signal processor (DSP), a microprocessor, or a microcontroller , Programmable logic device (programmable logic device, PLD) or any combination thereof. The processor may also be any other device with a processing function, such as a circuit, a device, or a software module.

The communication line 302 may include a path for transferring information between components included in the communication device.

The communication interface 303 can be used to communicate with other devices or communication networks (such as Ethernet, radio access network (RAN), wireless local area networks (WLAN), etc.). The communication interface 303 may be a module, a circuit, a transceiver, or any device capable of implementing communication.

The memory 304 may be a read-only memory (read-only memory, ROM) or other types of static storage devices that can store static information and / or instructions, or may be a random access memory (random access memory, RAM) or may store information And / or other types of dynamic storage devices of instructions, it can also be electrically erasable programmable read-only memory (electrically erasable programmable-read-only memory (EEPROM), compact disc-read-only memory (CD-ROM) Or other optical disc storage, optical disc storage (including compact discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or can be used to carry or store expectations with instructions or data structure The program code and any other media that can be accessed by the computer are not limited to this. In a possible design, the memory 304 may exist independently of the processor 301, that is, the memory 304 may be a memory external to the processor 301, and at this time, the memory 304 may be connected to the processor 301 through a communication line 302 to store instructions Or program code. When the processor 301 calls and executes the instructions or program codes stored in the memory 304, the data protection method provided by the following embodiments of the present application can be implemented. In another possible design, the memory 304 may also be integrated with the processor 301, that is, the memory 304 may be an internal memory of the processor 301, for example, the memory 304 is a cache, which may be used to temporarily store some data and / or Or instruction information, etc.

As an implementable manner, the processor 301 may include one or more CPUs, such as CPU0 and CPU1 in FIG. 3. As another implementable manner, the communication device 300 may include multiple processors, such as the processor 301 and the processor 307 in FIG. 3. As yet another implementable manner, the communication apparatus 300 may further include an output device 305 and an input device 306. Illustratively, the input device 306 may be a device such as a keyboard, mouse, microphone, or joystick, and the output device 305 may be a device such as a display screen or a speaker.

It should be noted that the communication device 300 may be a general-purpose device or a dedicated device. For example, the communication device 300 may be a desktop computer, a portable computer, a network server, a PDA, a mobile phone, a tablet computer, a wireless terminal, an embedded device, a chip system, or a device having a similar structure as shown in FIG. 3. The embodiment of the present application does not limit the type of the communication device 300. In the embodiment of the present application, the chip system may be composed of a chip, and may also include a chip and other discrete devices.

In the following, in conjunction with the system shown in FIG. 2, the access network device queries the capability information of any terminal in FIG. 2 as an example to describe the method for querying the capability information of the terminal provided by the embodiment of the present application. Wherein, each device mentioned in the following method embodiments may have the components shown in FIG. 3, which will not be repeated here.

FIG. 4 is a flowchart of a method for querying terminal capability information provided by an embodiment of the present application. As shown in FIG. 4, the method may include:

Step 401: The access network device obtains the first key value corresponding to the terminal.

The terminal may be any terminal in FIG. 2. The first key value corresponding to the terminal may also be described as a key value of the terminal or a key value corresponding to the terminal or a capability identifier (UE capability identity) of the terminal. The first key value corresponding to the terminal may correspond to the capability information of the terminal, and may be used to identify the capability information of the terminal.

In a possible design, the first key value corresponding to the terminal may be the terminal's international mobile equipment identifier + software version (internet, mobile, identity, software, version, IMEISV), and each terminal may uniquely correspond to one IMEISV. Among them, IMEISV is mainly composed of type allocation code (type allocation code, TAC), serial number (serial number, SNR), and software version number (software version number, SVN). The IMEISV of each terminal in the same UE category (such as terminals generated by the same equipment manufacturer and using the same software version) may be the same, and the IMEISV of terminals in different UE categories may be different. For example, assuming that terminal 1 is a device manufactured by Apple and has a software version number of XX, and terminal 2 is a device generated by Huawei and has a software version number of YY, terminal 1 corresponds to IMEISV1 and terminal 2 corresponds to IMEISV2, which is different from IMEISV1 of terminal 1. of.

Exemplarily, after accessing the cell through a random access process, the terminal may send its own IMEISV to the access network device, where it is stored by the access network device, for example, stored in a database inside the access network device. When step 401 is executed, the access network device may obtain the IMEISV of the terminal locally (eg, its own database).

Or, the access network device obtains the IMEISV of the terminal from the terminal, for example, the access network device sends a query request to the terminal, and after receiving the query request, the terminal sends its own IMEISV to the access network device. The query request may be used to request the capability identifier of the query terminal, and the query request may also be described as a capability identifier query request.

Or, the access network device obtains the IMEISV of the terminal from the core network device. The core network device may be a mobility management device (such as: mobility management entity (MME) or access and mobility management function (access and mobility management function, AMF), etc.), and the core network device may be established through the initial context The process sends the IMEISV of the terminal to the access network device. For example, the core network device may send an initial context establishment request (initial context setup request) to the access network device. The initial context establishment request may carry the IMEISV of the terminal. Among them, the IMEISV of the terminal may be sent to the core network device by the terminal through non-access stratum (NAS) signaling.

In another possible design, the first key value corresponding to the terminal is a value generated by the terminal according to the capability information of the terminal, and the hexadecimal bit stream corresponding to the value is greater than the hexadecimal bit stream corresponding to the capability information of the terminal. Much shorter.

Exemplarily, a certain mapping algorithm may be used to calculate the value of the terminal's capability information. The mapping algorithm may be a hash algorithm, such as MD5 algorithm (MD message-digest algorithm) or SHA256 algorithm ( SHA (secure hash algorithm), etc., the first key value corresponding to the terminal may be a hash value. Optionally, the hash algorithm is pre-configured for the terminal, and the hash algorithm configured for a type of terminal (such as UE category) that supports the same capability information may be the same.

In this possible design, the access network device acquiring the first key value corresponding to the terminal may include:

The access network device obtains from the terminal the value generated by the terminal according to the capability information of the terminal. Taking this value as the hash value as an example, the access network device can send a query request to the terminal. After receiving the query request, the terminal inputs the code stream corresponding to the capability information of the terminal into a hash algorithm to generate a hash value, and sends the hash value to Access network equipment. Among them, the query request is as described above and will not be repeated here. In addition, the embodiments of the present application are not limited to generating a hash value after the terminal receives the query request. Exemplarily, the terminal may also generate the hash value before receiving the query request and store the generated hash value locally when the terminal receives After reaching the query request sent by the access network device, the terminal obtains the hash value locally and sends the hash value to the access network device.

Or, the access network device obtains the value generated by the terminal according to the capability information of the terminal from the core network device. This acquisition method is similar to the above-mentioned method in which the access network device acquires the IMEISV of the terminal from the core network device. For example, taking the value generated by the terminal according to the capability information of the terminal as a hash value, the terminal may include the hash value in NAS signaling It is sent to the core network device. After obtaining the hash value, the core network device sends an initial context establishment request including the hash value to the access network device.

It should be noted that the first key value corresponding to the terminal may include but is not limited to the above two possible designs, and may also be a combination of the above two possible designs, for example: the first key value corresponding to the terminal may include the IMEISV of the terminal And the value generated by the terminal according to the capability information of the terminal (eg, hash value).

Step 402: The access network device queries the correspondence relationship table. If the capability information corresponding to the first key value exists in the correspondence relationship table, the access network device performs step 403.

Among them, the correspondence table may be pre-configured in the access network device and dynamically maintained by the access network device. The correspondence table may include multiple records, and each record is used to record capability information corresponding to a key value. The key value corresponds to the capability information one by one. The key values corresponding to different capability information are different. The capability information may refer to a The capability information corresponding to the UE category, such as: each record may include key value and capability information. The initial state of the correspondence table may be empty, or a part of the content may be predefined by the management personnel, and then dynamically maintained by the access network device. For example, when a new UE category is added, the capability information corresponding to the new UE category and the key value corresponding to a terminal in the new UE category may be added to the correspondence table. It should be noted that the access network device may obtain the key value corresponding to the terminal from the terminal in the manner described in step 401.

Exemplarily, the access network device querying the correspondence relationship table may include: traversing the key value included in each record in the correspondence relationship table with the first key value as the index, and determining if the same key value as the first key value is found The capability information corresponding to the first key value exists in the correspondence table, and the capability information of the terminal can be obtained from the correspondence table; otherwise, it is determined that the capability information corresponding to the first key value does not exist in the correspondence table, and the The capability information of the terminal is obtained from the correspondence table.

Step 403: The access network device determines the capability information corresponding to the first key value as the capability information of the terminal.

Taking the first key value corresponding to the terminal as IMEISV as an example, Table 1 below is a correspondence table including IMEISV and capability information. As shown in Table 1, the capability information supported by UE category1 is capability information 1, and IMEISV1 corresponds to capability information 1. The capability information supported by UE category1 is capability information 1, and IMEISV2 corresponds to capability information 2. Assuming that the access network device needs to query the capability information of terminal 1, terminal 1 belongs to UE category1, and the IMEISV of terminal 1 is IMEISV1. After reaching IMEISV of terminal 1, you can look up Table 1 to find the capability information 1 corresponding to IMEISV1, and use capability information 1 as the capability information of terminal 1. In this way, terminal 1 does not need to send its capability information to the access network device through the air interface , Reducing the air interface overhead.

Table I

IMEISVIMEISV	能力信息Capability information
IMEISV1IMEISV1	能力信息1Capability Information 1
IMEISV2IMEISV2	能力信息2Capability Information 2

Exemplarily, if the capability information corresponding to the first key value does not exist in the correspondence table, the access network device may send a first request for requesting the capability information of the terminal to the terminal. After receiving the first request, the terminal will The own capability information is sent to the access network device, and the access network device receives the capability information of the terminal sent by the terminal, and stores the first key value and the capability information of the terminal in a correspondence table. Subsequently, when the access network device needs When querying the capability information of the terminal or the capability information of other terminals belonging to the same UE category as the terminal, it can be directly queried from the correspondence table without receiving the capability information sent by the terminal.

For example, suppose that the access network device needs to query the capability information of terminal 3. Terminal 3 belongs to UE category3, and the IMEISV of terminal 3 is IMEISV3. After the access network device obtains the IMEISV of terminal 3, it can query table 1 IMEISV3 exists, that is, the capability information of terminal 3 cannot be obtained from the correspondence table. At this time, the access network device can send a request to terminal 3 to request the capability information of terminal 3. After terminal 3 receives the request sent by the access network device , Send its own capability information (for example: capability information 3) to the access network device, and after receiving the capability information of terminal 3, the access network device adds the IMEISV3 of terminal 3 and the capability information of terminal 3 to the correspondence table In the following, Table 2 below is the correspondence table after adding IMEISV3 and capability information 3. Later, when querying the IMEISV3 terminal's capability information, it can be directly obtained from Table 2 without receiving the capability information sent by the terminal from the air interface through the existing query process, thereby reducing the air interface overhead.

Table II

IMEISVIMEISV	能力信息Capability information
IMEISV1IMEISV1	能力信息1Capability Information 1
IMEISV2IMEISV2	能力信息2Capability Information 2
IMEISV3IMEISV3	能力信息3Capability Information 3

In the case that the first key value corresponding to the terminal is a hash value, the access network device queries the capability information of the terminal through the correspondence table in a manner similar to that described above. For example, assume that the code stream (hexadecimal) corresponding to capability information 1 of terminal 1 is as follows:

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terminal 1 using the hash value corresponding to the code stream obtained SHA256 algorithm: 2bced37a2e420ef3023e7f1eb321e7f19fa988d35780c689977a19ca2aad3cf2. Terminal 1 can send 2bced37a2e420ef3023e7f1eb321e7f19fa988d35780c689977a19ca2aad3cf2 and capability information 1 to the access network device, so that the access network device will: 2bced37a2e420ef3023e7f1eb321e7f19fa988d35780c689977a19ca2aad3h. When: ced37a2e420ef3023e7f1eb321e7f19fa988d35780c689977a19ca2aad3cf2, query Table 3, and use 2bced37a2e420ef3023e7f1eb321e7f19fa988d35780c689977a19ca2aad3cf2 as the capability information of the terminal 4.

Table 3

hash值hash value	能力信息Capability information
2bced37a2e420ef3023e7f1eb321e7f19fa988d35780c689977a19ca2aad3cf22bced37a2e420ef3023e7f1eb321e7f19fa988d35780c689977a19ca2aad3cf2	能力信息1Capability Information 1
88d35780c689977a19ca2aad3cf22bced37a2e420ef3023e7f1eb321e7f19fa988d35780c689977a19ca2aad3cf22bced37a2e420ef3023e7f1eb321e7f19fa9	能力信息2Capability Information 2

Based on the method shown in FIG. 4, a correspondence table including key values and capability information may be preset, and when the capability information of the terminal needs to be queried, the key value corresponding to the terminal is acquired to obtain the key value as an index, and the corresponding The relationship table uses the capability information corresponding to the acquired key value in the correspondence relationship table as the capability information of the terminal. In this way, the capability information of the terminal can be queried through the correspondence table, without using the existing query process, and the capability information sent by the terminal is received through the air interface, which reduces the air interface overhead.

The above mainly introduces the solution provided by the present application from the perspective of interaction between various nodes. It can be understood that, in order to realize the above-mentioned functions, each node, such as an access network device and a terminal, includes a hardware structure and / or a software module corresponding to each function. Those skilled in the art should easily realize that the present invention can be implemented in the form of hardware or a combination of hardware and computer software in combination with the algorithm steps of the examples described in the embodiments disclosed herein. Whether a function is executed by hardware or computer software driven hardware depends on the specific application and design constraints of the technical solution. Professional technicians can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the present invention.

The present application can divide the functional modules of the terminal and the access network device according to the above method example, for example, each functional module can be divided corresponding to each function, or two or more functions can be integrated into one processing module. The above integrated modules may be implemented in the form of hardware or software function modules. It should be noted that the division of modules in this application is schematic, and is only a division of logical functions, and there may be other divisions in actual implementation.

FIG. 5 is a schematic diagram of a composition of a communication device 50 provided by an embodiment of the present application. The communication device 50 may be an access network device or a chip or a system on chip in the access network device. As shown in FIG. 5, the communication device 50 may include: an obtaining unit 501, a query unit 502, and a sending unit 503;

The obtaining unit 501 is configured to obtain the first key value corresponding to the terminal. For example, the acquiring unit 501 is used to support the communication device 50 to execute step 401.

The query unit 502 is configured to query a correspondence table including at least one key value and at least one capability information corresponding to the at least one key value. If the capability information corresponding to the first key value exists in the correspondence table, the access network device will The capability information corresponding to the first key value is determined as the capability information of the terminal. For example, the query unit 502 is used to support the communication device 50 to execute steps 402 and 403.

Further, if the capability information corresponding to the first key value does not exist in the correspondence table, as shown in FIG. 5, the communication device 50 may further include:

The sending unit 503 is configured to send a first request to the terminal when there is no capability information corresponding to the first key value in the correspondence table; the first request is used to request the capability information of the terminal;

The obtaining unit 501 is also used to receive terminal capability information sent by the terminal;

The query unit 502 is also used to store the first key value and the capability information of the terminal in the correspondence table.

It should be noted that all relevant content of the steps involved in the above method embodiments can be referred to the function description of the corresponding function module, which will not be repeated here. The communication device 50 provided in the embodiment of the present application is used to perform the function of the access network device in the method for querying the terminal's capability information shown in FIG. 4, and thus can achieve the same effect as the above method for querying the terminal's capability information.

As yet another implementable manner, the communication device 50 shown in FIG. 5 may include: a processing module and a communication module. The processing module may integrate the functions of the query unit 502, and the communication module may integrate the functions of the obtaining unit 501 and the sending unit 503. The processing module is used to control and manage the actions of the communication device 50. For example, the processing module is used to support the communication device 50 to perform step 402, step 403, and other processes that perform the techniques described herein. The communication module is used to support the communication device 50 to perform step 401 and communicate with other network entities. Further, the communication device 50 shown in FIG. 5 may further include a storage module for storing program codes and data of the communication device 50.

The processing module may be a processor or a controller. It can implement or execute various exemplary logical blocks, modules, and circuits described in conjunction with the disclosure of the present application. The processor may also be a combination of computing functions, for example, including one or more microprocessor combinations, DSP and microprocessor combinations, and so on. The communication module may be a transceiver circuit or a communication interface. The storage module may be a memory. When the processing module is a processor, the communication module is a communication interface, and the storage module is a memory, the communication device 50 shown in FIG. 5 may be the communication device shown in FIG. 3.

FIG. 6 is a schematic diagram of a composition of a communication device 60 provided by an embodiment of the present application. The communication device 60 may be a terminal or a chip or a system-on-chip in the terminal. As shown in FIG. 6, the communication device 60 may include: an obtaining unit 601 and a sending unit 602;

An obtaining unit 601, configured to obtain a first key value;

The sending unit 602 is configured to send the first key value to the access network device; wherein, the first key value is used to query the capability information of the terminal.

It should be noted that all relevant content of the steps involved in the above method embodiments can be referred to the function description of the corresponding function module, which will not be repeated here. The communication device 60 provided by the embodiment of the present application is used to execute the function of the terminal in the method for querying the terminal's capability information shown in FIG.

As yet another implementable manner, the communication device 60 shown in FIG. 6 may include: a processing module and a communication module. The communication module may integrate the functions of the acquiring unit 601 and the sending unit 602. The processing module is used to control and manage the actions of the communication device 60. For example, the processing module is used to support the communication device 60 to perform other processes of the technology described herein. The communication module is used to support the communication device 60 to perform communication with other network entities. Further, the communication device 60 shown in FIG. 6 may further include a storage module for storing program codes and data of the communication device 60.

The processing module may be a processor or a controller. It can implement or execute various exemplary logical blocks, modules, and circuits described in conjunction with the disclosure of the present application. The processor may also be a combination of computing functions, for example, including one or more microprocessor combinations, DSP and microprocessor combinations, and so on. The communication module may be a transceiver circuit or a communication interface. The storage module may be a memory. When the processing module is a processor, the communication module is a communication interface, and the storage module is a memory, the communication device 60 shown in FIG. 6 may be the communication device shown in FIG. 3.

Through the description of the above embodiments, those skilled in the art can clearly understand that, for convenience and conciseness of description, only the above-mentioned division of each functional module is used as an example for illustration. In practical applications, the above-mentioned functions can be allocated as needed It is completed by different functional modules, that is, the internal structure of the device is divided into different functional modules to complete all or part of the functions described above.

In the several embodiments provided in this application, it should be understood that the disclosed device and method may be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the modules or units is only a division of logical functions. In actual implementation, there may be other divisions, for example, multiple units or components may be The combination can either be integrated into another device, or some features can be ignored, or not implemented. In addition, the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and the components displayed as units may be one physical unit or multiple physical units, that is, may be located in one place, or may be distributed in multiple different places . 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 into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit. The above integrated unit may be implemented in the form of hardware or software functional unit.

If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it may be stored in a readable storage medium. Based on this understanding, the technical solution of the present application may be essentially or part of the contribution to the existing technology or all or part of the technical solution may be embodied in the form of a software product, which is stored in a storage medium Several instructions are included to enable a device (which may be a single-chip microcomputer, chip, etc.) or processor to execute all or part of the steps of the methods described in various embodiments of the present invention. The foregoing storage media include various media that can store program codes, such as a U disk, a mobile hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.

The above are only specific embodiments of the present invention, but the scope of protection of the present invention is not limited to this, any changes or replacements within the technical scope disclosed by the present invention should be covered within the scope of protection of the present invention . Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

A method for querying the capability information of a terminal, characterized in that the method includes:

The access network device obtains the first key value corresponding to the terminal;

The access network device queries a correspondence table; wherein the correspondence table includes at least one key value and at least one capability information corresponding to the at least one key value;

If the capability information corresponding to the first key value exists in the correspondence table, the access network device determines the capability information corresponding to the first key value as the capability information of the terminal.
The method of claim 1, wherein:

The correspondence table is stored on the access network device.
The method according to claim 1 or 2, wherein the first key value is an international mobile equipment identifier of the terminal + a software version number IMEISV; the access network device obtains the first key corresponding to the terminal Values, including:

The access network device obtains the first key value locally; or,

The access network device obtains the first key value from the terminal; or,

The access network device obtains the first key value from the core network device.
The method according to claim 1 or 2, wherein the first key value is a value generated by the terminal according to the capability information of the terminal; the access network device obtains the first key value corresponding to the terminal ,include:

The access network device obtains the first key value from the terminal; or,

The access network device obtains the first key value from the core network device.
The method according to any one of claims 1-4, wherein the method further comprises:

If the capability information corresponding to the first key value does not exist in the correspondence table, the access network device sends a first request to the terminal, where the first request is used to request capability information of the terminal ;

The access network device receives the terminal capability information sent by the terminal, and stores the first key value and the terminal capability information in the correspondence table.
A method for querying the capability information of a terminal, characterized in that the method includes:

The terminal obtains the first key value;

The terminal sends a first key value to the access network device; wherein the first key value is used to query the capability information of the terminal.
The method of claim 6, wherein:

The first key value is the international mobile equipment identifier of the terminal + software version number IMEISV.
The method of claim 6, wherein:

The first key value is a value generated by the terminal according to the capability information of the terminal.
The method according to any one of claims 6-8, wherein if the capability information corresponding to the first key value does not exist in the correspondence table, the method further comprises:

The terminal receives the first request sent by the access network device;

The terminal sends capability information of the terminal to the access network device.
A communication device, characterized in that the communication device includes:

An obtaining unit, configured to obtain the first key value corresponding to the terminal;

The query unit is used to query the correspondence table, and if the capability information corresponding to the first key value exists in the correspondence table, determine the capability information corresponding to the first key value as the capability information of the terminal;

Wherein, the correspondence table includes at least one key value and at least one capability information corresponding to the at least one key value.
The communication device according to claim 10, wherein

The correspondence table is stored on the communication device.
The communication device according to claim 10 or 11, wherein the first key value is an international mobile equipment identifier of the terminal + a software version number IMEISV; the acquiring unit is specifically used for:

Obtain the first key value locally; or,

Acquiring the first key value from the terminal; or,

Obtain the first key value from the core network device.
The communication device according to claim 10 or 11, wherein the first key value is a value generated by the terminal according to the capability information of the terminal; the acquiring unit is specifically configured to:

Acquiring the first key value from the terminal; or,

Obtain the first key value from the core network device.
The communication device according to any one of claims 10 to 13, wherein if the capability information corresponding to the first key value does not exist in the correspondence table, the communication device further includes:

A sending unit, configured to send a first request to the terminal when the capability information corresponding to the first key value does not exist in the correspondence table, and the first request is used to request capability information of the terminal;

The acquiring unit is also used to receive the terminal capability information sent by the terminal;

The query unit is also used to store the first key value and the capability information of the terminal in the correspondence table.
A communication device, characterized in that the communication device includes:

An obtaining unit for obtaining the first key value;

The sending unit is configured to send a first key value to the access network device; wherein the first key value is used to query the capability information of the terminal.
The communication device according to claim 15, wherein

The first key value is the international mobile equipment identifier of the terminal + software version number IMEISV.
The communication device according to claim 15, wherein

The first key value is a value generated by the terminal according to the capability information of the terminal.
The communication device according to any one of claims 15-17, wherein if the capability information corresponding to the first key value does not exist in the correspondence table, the acquiring unit is further used to:

Receiving the first request sent by the access network device;

The sending unit is also used to send the capability information of the terminal to the access network device.