CN112514481A

CN112514481A - Method, equipment and system for identifying bandwidth capability of terminal

Info

Publication number: CN112514481A
Application number: CN201880096157.5A
Authority: CN
Inventors: 何朗; 宁磊; 李少华; 杜婷
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2018-11-16
Filing date: 2018-11-16
Publication date: 2021-03-16
Also published as: WO2020097942A1

Abstract

The embodiment of the application discloses a method, equipment and a system for identifying the bandwidth capability of a terminal, relates to the technical field of communication, and aims to solve the problem that the transmission rate and the access success rate of the terminal cannot be improved when the bandwidth capability of the terminal is reported through msg 3. The method comprises the following steps: the first terminal determines a first preamble indicating the bandwidth capability of the first terminal, and transmits a random access request including the first preamble to the access network device. The access network equipment receives a random access request which is sent by a first terminal and comprises a first lead code, and determines the bandwidth capacity of the first terminal according to the first lead code.

Description

Method, equipment and system for identifying bandwidth capability of terminal

Technical Field

The embodiment of the application relates to the technical field of communication, in particular to a method, equipment and a system for identifying bandwidth capability of a terminal.

Background

Due to the development of communication systems and industrial requirements, some countries or regions may have available spectrum discontinuity (i.e. discrete spectrum). The bandwidth of each frequency point of the discrete spectrum is relatively small, and only low-rate access can be provided, and if the terminal adopts the discrete spectrum to communicate with access network equipment (such as a base station), the communication requirement of the terminal high-speed data service cannot be met. In order to meet the communication requirement of the terminal for high-speed data traffic, Carrier Aggregation (CA) technology (or discrete narrowband communication technology) is proposed, such as: 2 or more discrete carrier units (CCs) are aggregated and allocated to the terminal, so as to support the terminal to transmit data traffic over a larger transmission bandwidth, and meet the communication requirement of high-speed data traffic.

Before allocating an aggregated carrier to a terminal, an access network device needs to acquire a bandwidth capability of the terminal first, and then allocate the aggregated carrier to the terminal according to the bandwidth capability of the terminal. Currently, a terminal may report its bandwidth capability in a random access process. For example, fig. 1 shows an existing random access process, as shown in fig. 1, a terminal may complete random access through four steps of 1 to 4, and in a third step of random access, the terminal reports a bandwidth capability of the terminal to an access network device, for example: the terminal may carry the bandwidth capability of the terminal in a message (msg) 3 to send to the access network device, and after receiving the msg3, the access network device obtains the bandwidth capability of the terminal from the msg 3.

As can be seen from the above, the access network device may identify the bandwidth capability of the terminal after receiving the msg3, allocate the aggregated carrier to the terminal according to the bandwidth capability of the terminal, and interact with the terminal through the aggregated carrier. Before the access network device receives the msg3, the terminal can only interact with the access network device through a single carrier, and the transmission rate and the access success rate of the terminal cannot be improved.

Disclosure of Invention

The embodiment of the application provides a method, equipment and a system for identifying the bandwidth capability of a terminal, so as to solve the problem that the transmission rate and the access success rate of the terminal cannot be improved when the bandwidth capability of the terminal is reported through msg3 in the prior art.

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

in a first aspect, a method for identifying a bandwidth capability of a terminal is provided, where the method includes: the method comprises the steps of determining a first preamble used for indicating the bandwidth capability of a first terminal, and sending a random access request comprising the first preamble to an access network device. Based on the method provided by the first aspect, the bandwidth capability of the terminal can be indicated through the preamble carried in the random access request, and reporting of the bandwidth capability of the terminal to the access network device in the first step of the random access process is achieved. Compared with the prior art, the access network equipment in the embodiment of the application can identify the bandwidth capability of the terminal as early as possible, and the aggregation carrier is allocated to the terminal equipment according to the bandwidth capability of the terminal, so that the terminal and the access network equipment can interact through the aggregation carrier as early as possible, and the data transmission rate can be improved by transmitting data on the aggregation carrier because the aggregation carrier can bring a larger bandwidth; meanwhile, the transmission reliability can be improved by transmitting repeated code blocks on the aggregated carrier, and the access success rate of the terminal is ensured; in addition, the method can reduce the time delay of the random access process and improve the access success rate of the remote point user.

In one possible design, with reference to the first aspect, determining the first preamble includes: determining a first preamble according to a correspondence between preambles and bandwidth capabilities and the bandwidth capability of the first terminal. Based on the possible design, the bandwidth capability and the lead code can be correspondingly associated, when the bandwidth capability of the terminal needs to be reported, the terminal can select the lead code corresponding to the bandwidth capability of the terminal in the corresponding relationship by searching the corresponding relationship between the lead code and the bandwidth capability, and the selected lead code is carried in the random access request and is sent to the access network equipment, so that the method is convenient and fast.

In one possible design, in combination with the first aspect or any one of the possible designs of the first aspect, a correspondence between the preamble and the bandwidth capability is stored in advance on the terminal. Based on the possible design, the terminal can acquire the corresponding relation between the bandwidth capacity and the lead code from the local storage, and the method is convenient and quick.

In a possible design, with reference to the first aspect or any one of the possible designs of the first aspect, a correspondence between the preambles and bandwidth capabilities indicates that the bandwidth capability of the first terminal corresponds to one or more preambles, where the first preamble is one of the one or more preambles. Based on the possible design, the bandwidth capability of the terminal may be mapped to one or more preambles, and any one of the one or more preambles is used to indicate the bandwidth capability of the terminal.

In a possible design, in combination with the first aspect or any one of the possible designs of the first aspect, the bandwidth capability of the first terminal is represented by a maximum bandwidth supported by the first terminal and/or a maximum number of aggregated carriers supported by the first terminal. Based on the possible design, the bandwidth capability of the terminal may be expressed in terms of a bandwidth size or an aggregation carrier number, etc.

In a possible design, in combination with the first aspect or any one of the possible designs of the first aspect, when the bandwidth capability of the first terminal indicates that the first terminal supports carrier aggregation, the method further includes: receiving a random access response from the access network device over two or more carriers. Based on the possible design, the access network device can determine whether the terminal supports carrier aggregation according to the bandwidth capability of the terminal, and sends a random access response to the terminal through aggregation carriers (two or more carriers) under the condition that the terminal supports a carrier set, so that the reliability of transmission of the random access response is improved, and the access success rate of the terminal is ensured.

In a possible design, in combination with the first aspect or any one of the possible designs of the first aspect, when the bandwidth capability of the first terminal indicates that the first terminal supports carrier aggregation, the method further includes: msg3 is sent to the access network device over two or more upload carriers. Based on the possible design, under the condition that the terminal supports the carrier set, the meg3 can be sent to the access network equipment by aggregating carriers (two or more carriers), so that the reliability of meg3 transmission is improved, and the access success rate of the terminal is ensured.

In a second aspect, the present application provides a communication device, which may be a terminal or a chip in a terminal or a system on a chip. The communication device may implement the functions performed by the terminal in the above aspects or possible designs, and the functions may be implemented by hardware or by hardware executing corresponding software. The hardware or software comprises one or more modules corresponding to the functions. Such as: the communication apparatus may include: a determining unit, a transmitting unit;

a determining unit for determining a first preamble indicating a bandwidth capability of the first terminal.

A sending unit, configured to send a random access request including the first preamble to an access network device.

The specific implementation manner of the communication apparatus may refer to a behavior function of the terminal in the method for identifying the bandwidth capability of the terminal provided by any one of the possible designs of the first aspect or the first aspect, and the first aspect or any one of the possible design methods of the first aspect may be implemented by the determining unit and the sending unit included in the communication apparatus, which is not repeated herein. Thus, the communication device provided may achieve the same advantageous effects as the first aspect or any one of the possible designs of the first aspect.

In a third aspect, a communication apparatus is provided, including: a processor and a memory; the memory is configured to store computer executable instructions that, when executed by the communication apparatus, cause the communication apparatus to perform a method of identifying bandwidth capability of a terminal as set forth in the first aspect or any one of the possible designs of the first aspect.

In a fourth aspect, there is provided a computer-readable storage medium having stored therein instructions, which, when run on a computer, cause the computer to perform the method for identifying a bandwidth capability of a terminal according to the first aspect or any one of the above possible designs.

In a fifth aspect, there is provided a computer program product comprising instructions which, when run on a computer, cause the computer to perform the method of identifying bandwidth capability of a terminal as set forth in the first aspect above or in any one of the possible designs of the above aspect.

In a sixth aspect, a chip system is provided, which includes a processor and a transceiver, and is configured to enable a communication apparatus to implement the functions recited in the above aspects, for example, the processor determines a first preamble indicating a bandwidth capability of a first terminal, and transmits a random access request including the first preamble to an access network device through the transceiver. In one possible design, the system-on-chip further includes a memory for storing program instructions and data necessary for the communication device. The chip system may be constituted by a chip, or may include a chip and other discrete devices.

For technical effects brought by any design manner in the third aspect to the sixth aspect, reference may be made to the technical effects brought by the first aspect or any possible design manner in the first aspect, and details are not repeated.

In a seventh aspect, an embodiment of the present application further provides a method for identifying a bandwidth capability of a terminal, where the method includes: receiving a random access request which is sent by a terminal and comprises a first lead code, wherein the first lead code is used for indicating the bandwidth capability of the terminal; and the access network equipment determines the bandwidth capability of the terminal according to the first lead code. Based on the method provided in the seventh aspect, the access network device may determine the bandwidth capability of the terminal through the preamble carried in the random access request, so as to identify the bandwidth capability of the terminal in the first step of the random access process. Compared with the prior art, the access network equipment in the embodiment of the application can identify the bandwidth capability of the terminal as early as possible, and the aggregation carrier is allocated to the terminal equipment according to the bandwidth capability of the terminal, so that the terminal and the access network equipment can interact through the aggregation carrier as early as possible, and the data transmission rate can be improved by transmitting data on the aggregation carrier because the aggregation carrier can bring a larger bandwidth; meanwhile, the transmission reliability can be improved by transmitting the repeated code blocks on the aggregated carrier, and the access success rate of the terminal is ensured.

In a possible design, with reference to the seventh aspect, the determining, by the access network device, the bandwidth capability of the terminal according to the first preamble includes: and determining the bandwidth capability of the first terminal according to the corresponding relation between the lead codes and the bandwidth capability and the first lead code. Based on the possible design, the bandwidth capability and the lead code can be correspondingly associated, when the access network equipment receives the lead code, the corresponding relationship can be searched, the bandwidth capability corresponding to the first lead code in the corresponding relationship is used as the bandwidth capability of the terminal, and the method is convenient and quick.

In a possible design, with reference to the seventh aspect or any one of the possible designs of the seventh aspect, a correspondence between a preamble and a bandwidth capability is stored in advance on the access network device; alternatively, the correspondence between the preamble and the bandwidth capability is determined by the access network device from the core network device. Based on the possible design, the access network device may determine the corresponding relationship including the corresponding relationship between the bandwidth capability and the preamble from a local device or other devices, and the implementation is flexible.

In a possible design, with reference to the seventh aspect or any one of the possible designs of the seventh aspect, a correspondence between the preambles and bandwidth capabilities indicates that the bandwidth capability of the first terminal corresponds to one or more preambles, and the first preamble is one of the one or more preambles. Based on the possible design, the bandwidth capability of the terminal may be mapped to one or more preambles, and any one of the one or more preambles is used to indicate the bandwidth capability of the terminal.

In a possible design, with reference to the seventh aspect or any one of the possible designs of the seventh aspect, the bandwidth capability of the first terminal is represented by a maximum bandwidth supported by the first terminal and/or a maximum number of aggregated carriers supported by the first terminal. Based on the possible design, the bandwidth capability of the terminal may be expressed in terms of a bandwidth size or an aggregation carrier number, etc.

In a possible design, with reference to the seventh aspect or any one of the possible designs of the seventh aspect, when the bandwidth capability of the first terminal indicates that the first terminal supports carrier aggregation, the method further includes: and sending a random access response to the terminal through two or more uplink carriers. Based on the possible design, the access network device can determine whether the terminal supports carrier aggregation according to the bandwidth capability of the terminal, and sends a random access response to the terminal through aggregation carriers (two or more carriers) under the condition that the terminal supports a carrier set, so that the reliability of transmission of the random access response is improved, and the access success rate of the terminal is ensured.

In a possible design, with reference to the seventh aspect or any one of the possible designs of the seventh aspect, when the bandwidth capability of the first terminal indicates that the first terminal supports carrier aggregation, the method further includes: msg3 is received over two or more carriers from a first terminal. Based on the possible design, under the condition that the terminal supports the carrier set, the meg3 is received by aggregating carriers (two or more carriers), so that the reliability of receiving the meg3 is improved, and the access success rate of the terminal is ensured.

In an eighth aspect, the present application provides a communication apparatus, which may be an access network device or a chip or a system on a chip in the access network device, and which may implement the functions executed by the access network device in each possible design of the seventh aspect or the seventh aspect, where the functions may be implemented by hardware or by hardware executing corresponding software. The hardware or software comprises one or more modules corresponding to the functions. Such as: the communication apparatus may include: a receiving unit, a determining unit;

a receiving unit, configured to receive a random access request including a first preamble sent by a first terminal, where the first preamble is used to indicate a bandwidth capability of the first terminal;

a determining unit, configured to determine a bandwidth capability of the first terminal according to the first preamble.

The specific implementation manner of the communication apparatus may refer to a behavior function of the access network device in the method for identifying a bandwidth capability of a terminal provided by any one of the possible designs of the seventh aspect or the seventh aspect, and any one of the possible design methods of the seventh aspect or the seventh aspect may be implemented by a receiving unit and a determining unit included in the communication apparatus, which is not repeated herein. Therefore, the communication device provided can achieve the same advantageous effects as any one of the possible designs of the seventh aspect or the seventh aspect.

In a ninth aspect, there is provided a communication apparatus comprising: a processor and a memory; the memory is configured to store computer-executable instructions, and when the communication apparatus is running, the processor executes the computer-executable instructions stored by the memory to enable the communication apparatus to perform the method for identifying the bandwidth capability of the terminal according to any one of the possible designs of the seventh aspect or the seventh aspect.

A tenth aspect provides a computer-readable storage medium having stored therein instructions, which, when run on a computer, cause the computer to perform the method for identifying a bandwidth capability of a terminal according to the seventh aspect or any one of the above possible designs.

In an eleventh aspect, there is provided a computer program product containing instructions which, when run on a computer, enable the computer to perform the method for identifying bandwidth capability of a terminal according to the seventh aspect or any one of the above possible designs.

In a twelfth aspect, a chip system is provided, where the chip system includes a processor and a transceiver, and is configured to enable the communication apparatus to implement the functions recited in the above aspects, for example, the processor receives, through the transceiver, a random access request sent by a first terminal, where the random access request includes a first preamble, and the first preamble is used to indicate a bandwidth capability of the first terminal; and determining the bandwidth capability of the first terminal according to the first preamble. In one possible design, the system-on-chip further includes a memory for storing program instructions and data necessary for the communication device. The chip system may be constituted by a chip, or may include a chip and other discrete devices.

For technical effects brought by any design manner of the ninth aspect to the twelfth aspect, reference may be made to the seventh aspect or any possible design manner of the seventh aspect, and details are not repeated.

In a thirteenth aspect, a system for identifying a bandwidth capability of a terminal is provided, which includes the terminal according to any one of the second to sixth aspects and the access network device according to any one of the eighth to twelfth aspects.

Drawings

Fig. 1 is a conventional random access procedure;

FIG. 2 is a simplified diagram of a system architecture according to an embodiment of the present application;

fig. 3 is a schematic diagram illustrating a communication device according to an embodiment of the present disclosure;

fig. 4 is a flowchart of a method for identifying a bandwidth capability of a terminal according to an embodiment of the present application;

fig. 5 is a schematic diagram illustrating a communication device 50 according to an embodiment of the present disclosure;

fig. 6 is a schematic composition diagram of a communication device 60 according to an embodiment of the present disclosure.

Detailed Description

The idea of the embodiment of the application is as follows: the bandwidth capability of the terminal is indicated through a lead code carried in the random access request, the first step of the random access process is realized, the bandwidth capability of the terminal is reported to the access network equipment, so that the access network equipment can identify the bandwidth capability of the terminal as soon as possible, aggregated carriers are allocated to the terminal equipment as soon as possible according to the bandwidth capability of the terminal, the terminal and the access network equipment are enabled to interact through the aggregated carriers after the first step of the random access process, the access speed and the access success rate are improved, the time delay of the random access process is reduced, and the access success rate of covering remote users is improved.

Before the embodiments of the present application are introduced, terms related to the embodiments of the present application are described to facilitate understanding of the embodiments of the present application:

the preamble (preamble) may be a sequence, for example, the preamble may be a sequence with a length of 43, and may also be a sequence with other lengths.

The technical solution in the embodiments of the present application is described below with reference to the drawings in the embodiments of the present application.

The method for identifying the bandwidth capability of the terminal provided by the embodiment of the application can be applied to any system supporting carrier aggregation, such as: the method can be applied to the communication system shown in fig. 2, and the communication system can be a cellular communication system, an LTE system and a fifth generation (5)^thgeneration, 5G) mobile communication system or new radio (NG) system, and may be other mobile communication systems, without limitation. As shown in fig. 2, the communication system may include an access network device and a terminal, where the terminal may transmit data or a message with the access network device through an aggregated carrier, and in the system shown in fig. 2, the terminal may establish a connection with a cell through a random access process (random access procedure) and obtain uplink synchronization, so as to perform uplink transmission. It should be noted that fig. 2 is only an exemplary framework diagram, the number of devices included in fig. 2 is not limited, and the system described in fig. 2 may include other nodes besides the functional nodes shown in fig. 2, such as: core network devices, gateway devices, application servers, etc., without limitation.

For example, the terminal in fig. 2 may be referred to as a terminal equipment (terminal equipment) or a User Equipment (UE), or a Mobile Station (MS), or a Mobile Terminal (MT), etc., and may be deployed on the water surface (e.g., a ship, etc.); and may also be deployed in the air (e.g., airplanes, balloons, satellites, etc.). Specifically, the terminal in fig. 2 may be a mobile phone (mobile phone), a tablet computer, or a computer with a wireless transceiving 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, a wireless terminal in smart grid, a wireless terminal in smart city (smart city), a wireless terminal in smart home (smart home), and so on. In the embodiment of the present application, the apparatus for implementing the function of the terminal may be the terminal, or may be an apparatus capable of supporting the terminal to implement 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 solution provided in the embodiment of the present application, a device for implementing a function of a terminal is taken as an example, and the technical solution provided in the embodiment of the present application is described.

The access network device in fig. 2 may be referred to as a network device, and is mainly used for implementing functions such as a radio physical control function, resource scheduling and radio resource management, radio access control, and mobility management. Specifically, the access network device may be AN Access Network (AN)/Radio Access Network (RAN) device, or a device composed of a plurality of 5G-AN/5G-RAN nodes, or any one of a base station (NB), AN evolved node b (eNB), a next generation base station (gbb), a transmission point (TRP), a Transmission Point (TP), and some other access node. In this 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 implement the function, for example, a chip system. In the technical solution provided in the embodiment of the present application, taking an example that a device for implementing a function of an access network device is an access network device, the technical solution provided in the embodiment of the present application is described.

In the system shown in fig. 2, the terminal may report the bandwidth capability of the terminal to the access network device in a first step in the random access process, such as: the terminal may indicate the bandwidth capability of the terminal by using a preamble carried by the random access request, and after receiving the random access request including the preamble, the access network device determines the bandwidth capability of the terminal according to the preamble. Specifically, the method may be described with reference to the corresponding embodiment in fig. 4.

In a specific implementation, each of the devices shown in fig. 2 has the components shown in fig. 3. Fig. 3 is a schematic composition diagram of a communication device according to an embodiment of the present application, where the communication device may be a terminal or a chip or a system on a chip inside the terminal when the communication device performs a function of the terminal in the method embodiment; when the communication device performs the function of the access network device in the method embodiment, the communication device may be the access network device or a chip or a system on chip inside the access network device. As shown in fig. 3, the communication device 300 includes at least one processor 301, a communication line 302, and at least one transceiver 303; further, the communication device shown in fig. 3 may also include a memory 304. The processor 301, the memory 304 and the transceiver 303 may be connected by a communication line 302. In the embodiments of the present application, at least one of the two or more may be one, two, three or more, and the embodiments of the present application are not limited.

In the embodiment of the present application, the processor 301 may be a Central Processing Unit (CPU), a general purpose processor Network (NP), a Digital Signal Processor (DSP), a microprocessor, a microcontroller, a Programmable Logic Device (PLD), or any combination thereof. The processor may also be any other means having a processing function such as a circuit, device or software module.

In the present embodiment, the communication lines 302 may include pathways for communicating information between components included in the communication device.

In this embodiment, the transceiver 303 is used for communicating with other devices or communication networks (e.g., ethernet, Radio Access Network (RAN), Wireless Local Area Networks (WLAN), etc.). The transceiver 303 may be a module, a circuit, a transceiver, or any device capable of enabling communication.

In the present embodiment, the memory 304 may be a read-only memory (ROM) or other type of static storage device that can store static information and/or instructions, a Random Access Memory (RAM) or other type of dynamic storage device that can store information and/or instructions, an electrically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM) or other optical disk storage, optical disk storage (including compact disc, laser disc, optical disc, digital versatile disc, blu-ray disc, etc.), a magnetic disk storage medium or other magnetic storage device, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer, but is not limited thereto.

In one possible design, the memory 304 may exist separately from the processor 301, i.e., the memory 304 may be a memory external to the processor 301, in which case the memory 304 may be coupled to the processor 301 via the communication line 302 for storing instructions or program code. The processor 301, when calling and executing the instructions or program codes stored in the memory 304, can implement the data protection method provided by the following embodiments of the present application. In yet 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 memory, and may be used for temporarily storing some data and/or instruction information, and the like.

As one implementation, the processor 301 may include one or more CPUs, such as CPU0 and CPU1 in fig. 3. As another implementation, the communication device 300 may include multiple processors, such as the processor 301 and the processor 307 in fig. 3.

As yet another way of implementation, when the communication apparatus shown in fig. 3 is used to perform functions performed by a terminal, as shown in fig. 3, the communication apparatus 300 may further include an output device 305 and an input device 306. Illustratively, the input device 306 may be a keyboard, mouse, microphone, joystick, or the like, and the output device 305 may be a display screen, speaker (spaker), or the like.

It should be noted that the communication apparatus 300 may be a general-purpose device or a special-purpose device. For example, the communication apparatus 300 may be a desktop computer, a portable computer, a web server, a PDA, a mobile phone, a tablet computer, a wireless terminal, an embedded device, a system-on-a-chip, or a device having a similar structure as in fig. 3. The embodiment of the present application does not limit the type of the communication apparatus 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.

The following describes a method for identifying a bandwidth capability of a terminal according to an embodiment of the present application with reference to the system shown in fig. 2. Each of the communication devices mentioned in the following method embodiments may have a component shown in fig. 3, and is not described again.

Fig. 4 is a flowchart of a method for identifying a bandwidth capability of a terminal according to an embodiment of the present application, and as shown in fig. 4, the method may include:

step 401: the first terminal determines a first preamble.

The first terminal may be any one of the terminals in fig. 2.

The first preamble may be used to indicate a bandwidth capability of the terminal. In the embodiment of the present application, the bandwidth capabilities of different types of terminals may be the same or different, and are not limited. Such as: terminal 1 supports 100MHz at maximum, and terminal 2 can also support 100MHz at maximum. The bandwidth capability of a terminal may be represented by the maximum bandwidth supported by the terminal and/or the maximum number of aggregated carriers supported by the terminal. The maximum bandwidth supported by the terminal and the maximum number of aggregation carriers supported by the terminal may be converted to each other, for example: assuming that the maximum bandwidth supported by the terminal is 15MHz, and the bandwidth of each carrier is 15KHz, the maximum number of aggregated carriers supported by the terminal is 15MHz/15KHz, which is 1000. On the contrary, if the maximum aggregation carrier number supported by the terminal is 1000 and the bandwidth of each carrier is 15KHz, the maximum bandwidth supported by the terminal is 15 MHz.

Illustratively, the determining, by the first terminal, the first preamble may include: and determining the first lead code according to the corresponding relation between the lead code and the bandwidth capability of the first terminal. Such as: and taking the preamble corresponding to the bandwidth capability of the first terminal in the corresponding relation between the preamble and the bandwidth capability as the first preamble.

The corresponding relationship between the preamble and the bandwidth capability may be predefined by a protocol, and configured to the terminal, for example: the corresponding relationship between the preamble and the bandwidth capability may be pre-stored in the terminal, and the terminal may search the corresponding relationship locally to determine the first preamble when performing step 401; it should be noted that the bandwidth capability described in the embodiment of the present application represents the bandwidth capability of the terminal.

For example, the following table one includes a corresponding relationship between preambles and bandwidth capabilities, and as shown in table one, the bandwidth capability corresponding to preamble 1 is: maximum support of 10 aggregated carriers; the bandwidth capability corresponding to the preamble 4 is: maximum support of 5 aggregated carriers; the bandwidth capability corresponding to the preamble 7 is: maximum support of 3 aggregated carriers; when the terminal 1 supports 5 aggregation carriers at maximum, the terminal 1 may query the first table to find the preamble 4 corresponding to the "supported 5 aggregation carriers at maximum" and send the preamble 4 carried in the random access request.

Watch 1

Lead code	Bandwidth capability
Preamble 1	Maximum support of 10 aggregated carriers
Preamble 4	Maximum support of 5 aggregated carriers
Preamble 7	Maximum support of 3 aggregated carriers

Step 402: the first terminal sends a random access request to the access network equipment.

Wherein the random access includes a first preamble.

Illustratively, the first terminal may send a random access request to the access network device over a wireless interface between the terminal and the access network device. Wherein, the wireless interface can be a Uu port.

Step 403: the access network equipment receives a random access request sent by a first terminal.

Step 404: and the access network equipment determines the bandwidth capability of the first terminal according to the first lead code.

For example, the determining, by the access network device, the bandwidth capability of the first terminal according to the first preamble may include: and determining the bandwidth capability of the first terminal according to the corresponding relation between the lead codes and the bandwidth capability and the first lead code. Such as: and according to the corresponding relation between the lead codes and the bandwidth capacity, taking the bandwidth capacity corresponding to the first lead code in the corresponding relation as the bandwidth capacity of the terminal.

The corresponding relationship between the preamble and the bandwidth capability may be stored in the access network device in advance, and the access network device may search the corresponding relationship locally when performing step 404, and determine the bandwidth capability of the terminal according to the first preamble; or, the access network device obtains from the core network device, such as: the corresponding relationship is pre-stored in a network device (e.g., a Unified Data Management (UDM) or other device), and when the access network device executes step 404, the access network device may obtain the corresponding relationship from the network device, and determine the bandwidth capability of the terminal according to the first preamble.

Based on the method provided in fig. 4, the bandwidth capability of the terminal can be indicated by the preamble carried in the random access request, so that the bandwidth capability of the terminal can be reported to the access network device in the first step of the random access process, the access network device can determine the bandwidth capability of the terminal by the preamble carried in the random access request, and the bandwidth capability of the terminal can be identified and reported in the first step of the random access process. Compared with the prior art, the access network equipment can identify the bandwidth capability of the terminal as early as possible, and judge whether the terminal supports carrier aggregation according to the bandwidth capability of the terminal, so that the terminal and the access network equipment can interact through aggregated carriers as early as possible, the data transmission rate and the transmission reliability are improved, and the access success rate of the terminal is further ensured.

Further optionally, after step 404, the access network device may determine whether the first terminal supports carrier aggregation according to the bandwidth capability of the first terminal, and if the first terminal supports multi-carrier aggregation, the access network device sends information to the first terminal according to the multi-carrier aggregation capability of the first terminal and other information (e.g., coverage of the first terminal), such as: the random access response is sent to the first terminal over two or more uploads. If the first terminal does not support carrier aggregation, the access network equipment allocates spectrum resources for the first terminal according to the single carrier or sends a random access response.

If the maximum number of carriers supported by the first terminal is greater than or equal to 2, determining that the first terminal supports carrier aggregation, and otherwise, determining that the first terminal does not support carrier aggregation. It should be noted that, if the bandwidth capability of the first terminal is represented by the maximum bandwidth supported by the first terminal, the access network device may convert the maximum bandwidth supported by the first terminal into the maximum number of carriers supported by the first terminal, and determine whether the first terminal supports carrier aggregation according to the maximum number of carriers supported by the first terminal.

For example, if the maximum number of carriers supported by the terminal is 3, it is determined that the terminal supports carrier aggregation, and the access network device may send a random access response to the terminal using 2 or 3 carriers.

Therefore, the access network equipment can determine whether the terminal supports carrier aggregation according to the bandwidth capability of the terminal, and sends the random access response to the terminal through the aggregated carriers (two or more than two carriers) under the condition that the terminal supports the carrier aggregation, so that the reliability of transmission of the random access response is improved, and the access success rate of the terminal is further ensured.

Further, if the first terminal supports multicarrier aggregation, the first terminal transmits msg3 to the terminal through two or more uploads. In this way, under the condition that the first terminal supports the carrier set, the meg3 can be sent to the access network device by aggregating carriers (two or more carriers), so that the reliability of meg3 transmission is improved, and the access success rate of the first terminal is ensured.

Here, msg3 is a message sent by the terminal in the random access response, and msg3 may also be described as a Radio Resource Control (RRC) request, which may be used to request RRC configuration, etc.

In the method illustrated in fig. 4, in order to improve flexibility of preamble selection, a correspondence between preambles and bandwidth capabilities may indicate that the bandwidth capability of the first terminal corresponds to one or more preambles, and the first preamble may be one of the one or more preambles, that is, each bandwidth capability in the correspondence between preambles and bandwidth capabilities may correspond to one or more preambles. In this embodiment, one or more preambles may be referred to as a preamble set, and the preamble corresponding to the bandwidth capability may be one of the preamble sets.

In this scenario, terminals supporting the same bandwidth capability may select different preambles. The correspondence between the preambles and the bandwidth capability may be described as a correspondence between a set of preambles and the bandwidth capability. The corresponding relationship between the preamble sets and the preambles included in the preamble sets needs to be configured in advance to the first terminal or the access network device. The corresponding relationship between the preamble codes included in the preamble code set and the corresponding relationship between the preamble code set and the bandwidth capability may be included in the same list, or may be included in different lists, which is not limited.

For example, all available preambles may be grouped into one or more (two or more) different preamble sets according to the bandwidth capabilities of existing terminals of different types, where the different preamble sets include different preambles and the same preamble set includes different preambles. One preamble set uniquely corresponds to one bandwidth capability. Such as: taking the maximum carrier aggregation number supported by the bandwidth capability as an example, assuming that M bandwidth capabilities exist, all available preambles may be divided into M preamble sets (N) according to the following formula_{_CA_0}～N _{_CA_M-1}) The M preamble sets correspond one-to-one to M bandwidth capabilities. Where N _ CA _ Set denotes a range of the number of aggregation carriers corresponding to each preamble Set, N _ CA _ Set is Floor (N _ MAX _ CA/M), Floor denotes a Floor, and N _ MAX _ CA denotes a maximum number of aggregation carriers in M bandwidth capabilities. For example, there are 3 bandwidth capabilities: supporting 10 aggregation carriers, 15 aggregation carriers, and 50 aggregation carriers, N _ MAX _ CA is 50, 3 preamble sets are 16, and the bandwidth capability corresponding to the first preamble set is: 0 aggregation carriers are supported, and the bandwidth capacity corresponding to the second preamble set is as follows: support 16 aggregation carriers, and the bandwidth capability corresponding to the third preamble set is: 32 aggregated carriers are supported.

It should be noted that, the present embodiment includes, but is not limited to, partitioning the preamble set in the above manner, and configuring the table by associating the partitioned preamble set with the bandwidth capability. In addition, when the preamble sets are divided, part of the preambles in all available preambles can be divided into M preamble sets, wherein the reserved preambles do not have the function of indicating the bandwidth capability of the terminal; all preambles of all available preambles may also be divided into M preamble sets, without limitation.

Illustratively, when the bandwidth capability corresponds to a preamble set, i.e. the bandwidth capability corresponds to one or more preambles; the first terminal determining the first preamble may include: the first terminal determines a first lead code set corresponding to the bandwidth capability of the first terminal according to the corresponding relation between the lead code set and the bandwidth capability of the first terminal; selecting any preamble from the first set of preambles as the first preamble;

correspondingly, the determining, by the access network device, the bandwidth capability of the first terminal according to the first preamble may include: determining that the first preamble is included in the first set of preambles; and according to the corresponding relation between the preamble set and the bandwidth capacity, taking the bandwidth capacity corresponding to the first preamble set in the corresponding relation as the bandwidth capacity of the first terminal.

For example, taking as an example that the corresponding relationship between the preamble set and the preambles included in the preambles and the corresponding relationship between the preamble set and the bandwidth capability are included in the same list, table two is a configuration table including the preamble set, the preambles included in the preamble set, and the bandwidth capability, as shown in table two, the preamble set 1 includes the preamble 1, the preamble 2, and the preamble 3, and the bandwidth capability corresponding to the preamble set 1 is: maximum support of 10 aggregated carriers; the preamble set 2 includes a preamble 4, a preamble 5, and a preamble 6, and the bandwidth capability corresponding to the preamble set 2 is: maximum support of 5 aggregated carriers; the preamble set 3 includes a preamble 7, a preamble 8, and a preamble 9, and the bandwidth capability corresponding to the preamble set 2 is: maximum support of 3 aggregated carriers; when the terminal 1 supports 5 aggregation carriers at maximum, the terminal 1 may query the table two, find the preamble set 2 corresponding to the "aggregation carrier supported at maximum 5", and select a preamble (e.g., preamble 4) from the preambles 4, 5, and 6 included in the preamble set 2 to carry in the random access request to send out.

Watch two

Preamble set	Lead code	Bandwidth capability
Preamble set 1	Preamble 1, preamble 2, preamble 3	Maximum support of 10 aggregated carriers
Preamble set 2	Preamble 4, preamble 5, preamble 6	Maximum support of 5 aggregated carriers
Preamble set 3	Preamble 7, preamble 8, preamble 9	Maximum support of 3 aggregated carriers

It should be noted that the correspondence between the preamble set and the bandwidth capability according to the embodiment of the present application may be dynamically updated as the number of available preambles increases (or decreases) or the number of types of bandwidth capabilities of the terminal increases (or decreases). Such as: at present, bandwidth capabilities of 3 exist, but when bandwidth capabilities of 1 are newly added and the newly added bandwidth capabilities do not correspond to corresponding lead codes, all available lead codes can be grouped again to obtain a corresponding relation between the new bandwidth capabilities and a lead code set, and the corresponding relation between the new bandwidth capabilities and the lead code set is stored.

In addition, when selecting the preamble, the terminal may select the preamble from a preamble set in which the number of supported carriers is less than or equal to the maximum carrier aggregation number of the terminal. Such as: assuming that the maximum number of carrier aggregation supported by the terminal is 9, it can be known from table two that the preamble in the preamble set 2 (the maximum number of carrier aggregation supported is 5) is selected for transmission. For the search, the maximum preamble set k — M-1 may be searched until the first preamble set is found, and the preambles are selected from the found preamble set: the maximum aggregation carrier number corresponding to the preamble set is less than or equal to the (maximum) carrier aggregation number supported by the terminal. Or, searching from the minimum preamble set k ═ 0 until the first preamble set meeting the following requirements is found, and selecting the preambles from the found preamble set: the maximum aggregation carrier number corresponding to the preamble set is less than or equal to the (maximum) carrier aggregation number supported by the terminal. Or, randomly searching until a first preamble set meeting the following requirements is found, and selecting the preamble from the found preamble set: the maximum aggregation carrier number corresponding to the preamble set is less than or equal to the (maximum) carrier aggregation number supported by the terminal, and in the embodiment of the present application, the method for searching the preamble set is not limited.

The above mainly introduces the scheme provided by the present application from the perspective of interaction between the nodes. It will be appreciated that each node, such as the terminal and the access network equipment, for implementing the above-described functions, may comprise corresponding hardware structures and/or software modules for performing the respective functions. Those of skill in the art will readily appreciate that the present invention can be implemented in hardware or a combination of hardware and computer software, in conjunction with the exemplary algorithm steps described in connection with the embodiments disclosed herein. Whether a function is performed as hardware or computer software drives hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.

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

Fig. 5 is a schematic composition diagram of a communication device 50 according to an embodiment of the present application, where the communication device 50 may be a first terminal or a chip or a system on a chip in the first terminal. As shown in fig. 5, the communication device 50 may include: a determination unit 501, a transmission unit 502;

a determining unit 501, configured to determine a first preamble indicating a bandwidth capability of a first terminal. Such as: the determination unit 501 may be configured to support the communication device 50 to perform step 401.

A sending unit 502, configured to send a random access request including the first preamble to an access network device. Such as: the sending unit 502 may be used to support the communication device 50 to perform step 402.

It should be noted that all relevant contents of each step related to the above method embodiment may be referred to the functional description of the corresponding functional module, and are not described herein again. The communication device 50 according to the embodiment of the present application is used to perform the function of the first terminal in the method for identifying the bandwidth capability of the terminal shown in fig. 3 to 6, and therefore, the same effect as the above-mentioned method for identifying the bandwidth capability of the terminal can be achieved.

As yet another implementation, the communication device 50 shown in fig. 5 may include: a processing module and a communication module. The processing module may integrate the functionality of the determination unit 501 and the communication module may integrate the functionality of the sending unit 502. 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 401 and other processes for performing the techniques described herein. The communication module is used to support the communication device 50 to perform step 402 and communicate with other network entities. Further, the communication device 50 shown in fig. 5 may also 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. Which may implement or perform the various illustrative logical blocks, modules, and circuits described in connection with the disclosure. A processor may also be a combination of computing functions, e.g., comprising one or more microprocessors, a DSP and a microprocessor, or the like. The communication module may be a transceiver circuit or transceiver, etc. The storage module may be a memory. When the processing module is a processor, the communication module is a transceiver, 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 composition diagram of a communication device 60 according to an embodiment of the present disclosure, where the communication device 60 may be an access network device or a chip or a system on chip in the access network device. As shown in fig. 6, the communication device 60 may include: a receiving unit 601, a determining unit 602;

the receiving unit 601 is configured to receive a random access request sent by a first terminal, where the random access request includes a first preamble, and the first preamble is used to indicate a bandwidth capability of the first terminal; such as: the receiving unit 601 may be configured to support the communication device 60 to perform step 403.

A determining unit 602, configured to determine a bandwidth capability of the first terminal according to the first preamble. Such as: the determining unit 602 may be configured to enable the communication device 60 to perform step 404.

It should be noted that all relevant contents of each step related to the above method embodiment may be referred to the functional description of the corresponding functional module, and are not described herein again. The communication device 60 provided in the embodiment of the present application is used to execute the function of the access network device in the method for identifying the bandwidth capability of the terminal shown in fig. 3 to fig. 6, so that the same effect as the above-mentioned method for identifying the bandwidth capability of the terminal can be achieved.

As yet another implementation, the communication device 60 shown in fig. 6 may include: a processing module and a communication module. The communication module may integrate the functionality of the receiving unit 601 and the processing module may integrate the functionality of the determining unit 602. The processing module is used to control and manage the actions of the communication device 60, e.g., the processing module is used to support the communication device 60 to perform step 404 and other processes of the techniques described herein. The communication module is used to support the communication device 60 to perform step 403 and communicate with other network entities. Further, the communication device 60 shown in fig. 6 may also 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. Which may implement or perform the various illustrative logical blocks, modules, and circuits described in connection with the disclosure. A processor may also be a combination of computing functions, e.g., comprising one or more microprocessors, a DSP and a microprocessor, or the like. The communication module may be a transceiver circuit or transceiver, etc. The storage module may be a memory. When the processing module is a processor, the communication module is a transceiver, and the storage module is a memory, the communication device 60 shown in fig. 6 can be the communication device shown in fig. 3.

Through the above description of the embodiments, it is clear to those skilled in the art that, for convenience and simplicity of description, the foregoing division of the functional modules is merely used as an example, and in practical applications, the above function distribution may be completed by different functional modules according to needs, that is, the internal structure of the device may be divided into different functional modules to complete all or part of the above described functions.

In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described device embodiments are merely illustrative, and for example, the division of the modules or units is only one logical functional division, and there may be other divisions when actually implemented, for example, a plurality of units or components may be combined or may be integrated into another device, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may be one physical unit or a plurality of physical units, that is, may be located in one place, or may be distributed in a plurality of different places. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a readable storage medium. Based on such understanding, the technical solution of the present application may be substantially implemented or contributed to by the prior art, or all or part of the technical solution may be embodied in the form of a software product, where the software product is stored in a storage medium and includes several instructions to enable a device (which may be a single chip, a chip, or the like) or a processor (processor) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a U disk, a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.

The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions within the technical scope of the present invention are intended to be covered by the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims

A method of identifying bandwidth capability of a terminal, the method comprising:

determining a first preamble; wherein the first preamble is used to indicate a bandwidth capability of the first terminal;

sending a random access request to access network equipment; wherein the random access request includes the first preamble.
The method of claim 1, wherein the determining the first preamble comprises:

determining a first preamble according to a correspondence between preambles and bandwidth capabilities and the bandwidth capability of the first terminal.
The method of claim 2,

the correspondence between the preamble and the bandwidth capability is pre-stored on the first terminal.
The method according to claim 2 or 3,

the correspondence between the preamble and bandwidth capabilities indicates that the bandwidth capabilities of the first terminal correspond to one or more preambles, the first preamble being one of the one or more preambles.
The method according to any one of claims 1 to 4,

the bandwidth capability of the first terminal is represented by a maximum bandwidth supported by the first terminal and/or a maximum number of aggregated carriers supported by the first terminal.
The method of any of claims 1-5, wherein when the bandwidth capability of the first terminal indicates that the first terminal supports carrier aggregation, the method further comprises:

receiving a random access response from the access network device over two or more carriers.
The method of claim 6, further comprising:

and transmitting the message msg3 to the access network equipment through two or more upload waves.
A method of identifying bandwidth capability of a terminal, the method comprising:

receiving a random access request sent by a first terminal; wherein the random access request comprises a first preamble, the first preamble being used to indicate a bandwidth capability of the first terminal;

and determining the bandwidth capability of the first terminal according to the first preamble.
The method of claim 8, wherein determining the bandwidth capability of the terminal according to the first preamble comprises:

and determining the bandwidth capability of the first terminal according to the corresponding relation between the lead codes and the bandwidth capability and the first lead code.
The method of claim 9,

the corresponding relation between the lead code and the bandwidth capability is stored in the upper part in advance; alternatively, the first and second electrodes may be,

the corresponding relation between the preamble and the bandwidth capability is obtained by the slave core network device.
The method according to claim 9 or 10,

the correspondence between the preamble and bandwidth capabilities indicates that the bandwidth capabilities of the first terminal correspond to one or more preambles, the first preamble being one of the one or more preambles.
The method according to any one of claims 8 to 11,

the bandwidth capability of the first terminal is represented by a maximum bandwidth supported by the first terminal and/or a maximum number of aggregated carriers supported by the first terminal.
The method of claims 8-12, wherein when the bandwidth capability of the first terminal indicates that the first terminal supports carrier aggregation, the method further comprises:

and sending a random access response to the terminal through two or more uplink carriers.
The method of claim 13, further comprising:

msg3 is received over two or more carriers from the first terminal.
A communications device comprising a processor coupled to a memory, the memory for storing a computer program or instructions, the processor for executing the computer program or instructions in the memory such that the communications device performs the method of any of claims 1 to 7.
A communications device comprising a processor coupled to a memory, the memory for storing a computer program or instructions, the processor for executing the computer program or instructions in the memory such that the communications device performs the method of any of claims 8 to 14.