WO2022257564A1

WO2022257564A1 - Communication method and apparatus

Info

Publication number: WO2022257564A1
Application number: PCT/CN2022/083761
Authority: WO
Inventors: 邝奕如; 李秉肇
Original assignee: 华为技术有限公司
Priority date: 2021-06-09
Filing date: 2022-03-29
Publication date: 2022-12-15
Also published as: CN115460587A

Abstract

The present application provides a communication method and apparatus. When applied to a terminal device, the method may comprise: sending first capability information to a network device. The first capability information is used for indicating capabilities of first radio access technology supported by the terminal device, and the first capability information further comprises: frequency band information of second radio access technology supported by the terminal device. The frequency band information comprises: at least one frequency band corresponding to the second radio access technology supported by the terminal device, and bandwidth information on each of the at least one frequency band so as to enable a network device which supports the first radio access technology to, when the first capability information is parsed, obtain the frequency band information of the second radio access technology supported by the terminal device and the bandwidth information on the frequency band of the second radio access technology supported by the terminal device. Thus, the terminal device better accesses a network device of the second radio access technology by means of the network device which supports the first radio access technology.

Description

A communication method and device

Cross References to Related Applications

This application claims the priority of the Chinese patent application with the application number 202110641980.3 and the application title "A Capability Reporting Method, Terminal and Network Equipment" submitted to the China Patent Office on June 9, 2021, the entire contents of which are incorporated by reference in In this application; this application claims the priority of the Chinese patent application submitted to the China Patent Office on July 27, 2021, with the application number 202110853138.6, and the application name "a communication method and device", the entire content of which is incorporated by reference In this application.

technical field

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

Background technique

After accessing a certain network, a user equipment (user equipment, UE) needs to report UE capabilities to the base station and the core network. The UE capability is reported through a special UE Capability Information (UE CapabilityInformation), and the UE Capability message may include the capabilities of the UE in multiple radio access technologies (radio access technology, RAT).

Currently, when the UE performs cell or base station handover or adds a secondary cell of a different system, because the source network device cannot resolve the container or capability of the different system supported by the UE, the bandwidth supported by the target network device may not be the same as the bandwidth supported by the UE. If they do not match, the handover of the UE is rejected, which increases the probability of handover preparation failure. In order for the handover to succeed, it is necessary to re-handover or re-add the secondary cell, resulting in greater time delay and greater signaling overhead.

Contents of the invention

Embodiments of the present application provide a communication method and device, which are used to improve the success rate of inter-system handover, secondary cell addition or secondary cell change, and reduce signaling overhead.

In a first aspect, the present application provides a communication method, which can be applied to a terminal device, or a component in the terminal device, such as a chip. The method includes:

Determining first capability information, where the first capability information is used to indicate the capability of the first wireless access technology supported by the terminal device, and the first capability information further includes: a second wireless access technology supported by the terminal device Technology frequency band information; the frequency band information includes: at least one frequency band corresponding to the second wireless access technology supported by the terminal device, and bandwidth information on each frequency band in the at least one frequency band, the first wireless access technology The access technology is different from the second wireless access technology; and the first capability information is sent to the network device.

Through the above method, the terminal device can report the frequency band information of the second wireless access technology supported by the terminal device in the first capability information, that is, the bandwidth of at least one frequency band of the second wireless access technology supported by the terminal device information, therefore, the network device can obtain the bandwidth capability on the frequency band of the second radio access technology supported by the terminal device by parsing the first capability information, for example, parsing the container corresponding to the first radio access technology supported by itself, which is helpful It is used to improve the success rate of the network equipment to prepare for inter-system handover or add secondary cells.

In a possible implementation manner, the first capability information is carried in a container of the first wireless access technology or in capability information of the first wireless access technology of the terminal device.

Through the above method, the network device can obtain the bandwidth capability on the frequency band of the second wireless access technology supported by the terminal device by analyzing the container or capability information corresponding to the first wireless access technology supported by itself, which helps to improve the network device The success rate of inter-system handover preparation or secondary cell addition.

A possible implementation manner is to receive first indication information from the network device, where the first indication information is used to instruct the terminal device to report each frequency band in the at least one frequency band in the first capability information. Bandwidth information on the frequency band.

Through the above method, the terminal device can determine, based on the first indication information of the network device, to report the bandwidth information of at least one frequency band of the second wireless access technology supported by the terminal device in the first capability information, and if the terminal device does not receive the In the first indication information, the terminal device may not report the bandwidth information on each frequency band in the at least one frequency band in the first capability information, so as to save reporting signaling overhead.

In a possible implementation manner, the bandwidth information on each frequency band in the at least one frequency band is carried in a user equipment UE capability message.

Through the above method, the network device can obtain the bandwidth information on the frequency band of the second radio access technology supported by the terminal device in multiple ways, thereby improving flexibility.

In a possible implementation manner, the bandwidth information on each frequency band in the at least one frequency band includes at least one of the following:

Uplink bandwidth information on each frequency band in at least one frequency band;

Downlink bandwidth information on each frequency band in at least one frequency band;

Bandwidth information corresponding to each subcarrier spacing in at least one subcarrier spacing on each frequency band in at least one frequency band;

Uplink bandwidth information corresponding to each subcarrier spacing in at least one subcarrier spacing on each frequency band in at least one frequency band;

Downlink bandwidth information corresponding to each subcarrier spacing in at least one subcarrier spacing on each frequency band in the at least one frequency band.

Through the above method, the terminal device can report the bandwidth information on the frequency band of the second radio access technology supported by the terminal device in various ways, thereby improving flexibility.

In a possible implementation manner, the first capability information includes: a first indication field.

The first indication field is used to indicate at least one bandwidth information on each frequency band in the at least one frequency band;

Alternatively, the first indication field includes at least one first indication subfield, and one first indication subfield in the at least one first indication subfield is used to indicate that each of the at least one frequency band supported by the terminal device Bandwidth information corresponding to a subcarrier spacing on the frequency band;

Alternatively, the first indication field includes at least one first indication subfield, and one first indication subfield in the at least one first indication subfield is used to indicate that each of the at least one frequency band supported by the terminal device Uplink bandwidth information or downlink bandwidth information corresponding to a subcarrier spacing on the frequency band;

Alternatively, the first indication field includes at least one of a first uplink indication field or a first downlink indication field, and the first uplink indication field is used to indicate uplink bandwidth information on each frequency band in the at least one frequency band ; The first downlink indication field is used to indicate downlink bandwidth information on each frequency band in the at least one frequency band.

A possible implementation manner is to send UE capability information to the network device, where the UE capability information includes the first capability information and second capability information, and the second capability information is used to indicate the UE capability information supported by the terminal device. The capability of the second radio access technology, where the second capability information includes: at least one frequency band corresponding to the second radio access technology supported by the terminal device, and bandwidth information on each frequency band in the at least one frequency band .

Through the above method, the terminal device can also report the first capability information and the second capability information at the same time through the UE capability information, so as to adapt to the ability of the network device supporting the second radio access technology to analyze the second radio access technology supported by the terminal device, Improve the versatility of the reporting capability of terminal equipment.

A possible implementation manner, the frequency band information is used to send a request message to the target network device;

Wherein, the request message is used to request the terminal device to establish a communication connection with the target network device; the channel bandwidth of the first frequency point supported by the terminal device is less than or equal to the channel bandwidth supported by the target network device. The carrier bandwidth on the first frequency point is greater than or equal to the bandwidth of the initial bandwidth part of the first frequency point supported by the target network device.

Through the above method, the network device may be based on the first capability information: the bandwidth information of the frequency band of the second wireless access technology supported by the terminal device or the bandwidth of the frequency point of the second wireless access technology supported by the terminal device information to generate a request message to prepare for inter-system handover or add a secondary cell, thereby effectively improving the success rate of the network device for inter-system handover preparation or addition of a secondary cell.

In a possible implementation manner, the request message is any one of the following: a handover request message, a secondary node addition request message, or a secondary node change request message. In this manner, the terminal device reports the first wireless access capability, which can be used in more scenarios, and the applicability of the terminal device to report the first wireless access capability is improved.

In a second aspect, the present application provides a communication method, which is applied to a network device, or a component in a network device, such as a chip. The method includes: receiving first capability information from a terminal device; the first capability information is used to indicate The capability of the first wireless access technology supported by the terminal device, the first capability information further includes: frequency band information of the second wireless access technology supported by the terminal device; the frequency band information includes: the terminal device At least one frequency band corresponding to the supported second radio access technology, and bandwidth information on each frequency band in the at least one frequency band, the first radio access technology is different from the second radio access technology Radio access technology: determining at least one frequency band corresponding to a second radio access technology supported by the terminal device and bandwidth information on each frequency band in the at least one frequency band according to the first capability information.

Through the above method, the network device can obtain the bandwidth capability on the frequency band of the second radio access technology supported by the terminal device by parsing the first capability information, for example, parsing the container corresponding to the first radio access technology supported by itself, which is helpful It is used to improve the success rate of the network equipment to prepare for inter-system handover or add secondary cells.

In a possible implementation manner, the first indication information is sent to the terminal device, where the first indication information is used to instruct the terminal device to report in the first capability information the bandwidth information.

Through the above method, the network device can send the first indication information to the terminal device before switching to a different system or adding a secondary cell of a different system, and when the terminal device does not receive the first indication information, it is not necessary to report the at least one frequency band Bandwidth information on each frequency band in , so as to save the overhead of terminal equipment reporting signaling.

Through the above method, the network device can obtain the frequency band information at an earlier time, for example, before the terminal measures the reference signal of the cell, obtain the frequency band information, and improve the effect of cell handover, secondary cell addition or secondary cell change. In addition, it can also help the network device to select the frequency point in the frequency band supported by the terminal device when configuring the frequency point for measurement for the terminal device, so as to improve the measurement efficiency of the terminal device and reduce the measurement overhead.

Through the above method, the network device can obtain frequency band information in multiple ways, that is, bandwidth information on at least one frequency band of the second radio access technology supported by the terminal device, thereby improving flexibility.

Wherein, the first indication field is used to indicate at least one bandwidth information on each frequency band in the at least one frequency band;

A possible implementation manner is to receive UE capability information from a terminal device, where the UE capability information includes the first capability information and second capability information, and the second capability information is used to indicate the first capability information supported by the terminal device. Capabilities of two radio access technologies, the second capability information includes: at least one frequency band corresponding to the second radio access technology supported by the terminal device, and bandwidth information on each frequency band in the at least one frequency band.

Through the above method, the network device can also receive the second capability information reported by the terminal device, and when the network device supports the second wireless access technology, it can obtain the information of the second wireless access technology supported by the terminal device by parsing the second capability information. capabilities, improve the versatility of terminal equipment reporting capabilities, and improve signaling compatibility.

In a possible implementation manner, a request message is sent to the target network device according to the frequency band information; wherein the request message is used to request the terminal device to establish a communication connection with the target network device; the terminal device supports The channel bandwidth of the first frequency band is less than or equal to the carrier bandwidth on the first frequency band supported by the target network device, and greater than or equal to the bandwidth of the initial bandwidth part of the first frequency band supported by the target network device, the first frequency band It is one of at least one frequency band of the second radio access technology supported by the terminal device.

In a possible implementation manner, the request message is any one of the following: a handover request message, a secondary node addition request message, or a secondary node change request message.

Through the above method, the network device can generate a request message based on the frequency band information in the first capability information, so as to perform actions such as inter-system handover preparation or secondary cell addition, thereby effectively improving the network device's inter-system handover preparation. or the success rate of actions such as adding a secondary cell.

In a possible implementation manner, the reference signal measurement value of the serving cell of the terminal device is smaller than a first preset threshold, and the reference signal measurement value of other cells of the second radio access technology supported by the terminal device is greater than the second A preset threshold, the first preset threshold is less than or equal to the second preset threshold, and the cell of the target network device is one of the other cells.

Through the above method, the network device can determine to trigger cell handover to improve the transmission performance of the terminal device.

In a possible implementation manner, the throughput of the serving cell of the terminal device is less than a third preset threshold, and the reference signal measurement values of other cells of the second radio access technology supported by the terminal device are greater than a fourth preset a threshold, the cell of the target network device is one of the other cells;

Or, the reference signal measurement value of the secondary cell of the terminal device is less than the fifth preset threshold, and the reference signal measurement value of other cells of the second radio access technology supported by the terminal device is greater than the sixth preset threshold, so The fifth preset threshold is less than or equal to the sixth preset threshold, and the cell of the target network device is one of the other cells.

Through the above method, the network device can determine to trigger the addition of the secondary cell or the change of the secondary cell, so as to improve the transmission performance and throughput of the terminal device.

In a third aspect, the present application provides a communication method applied to a terminal device, the method comprising: receiving a first configuration message from a network device; the first configuration message is used to configure a frequency point for measuring a second wireless access technology , the first configuration message includes: frequency point information of the second radio access technology, the network device is a network device supporting the first radio access technology; sending first measurement information to the network device, the first measurement The information is used to indicate the first frequency point information, the first frequency point information includes the first frequency point and the bandwidth information on the first frequency point supported by the terminal device, and the first frequency point information is Frequency point information that satisfies a preset condition in the frequency point information of the second wireless access technology.

Through the above method, the terminal device can report the frequency point information of the second wireless access technology supported by the terminal device and the bandwidth information on the frequency point of the second wireless access technology supported by the terminal device in the first measurement information For example, the frequency point information may be sent to the network device by the terminal device selecting a frequency point with relatively good communication quality. Therefore, the network device may obtain bandwidth information on the frequency point selected by the terminal device based on the first measurement information, It is helpful to improve the success rate of the network equipment for the handover preparation of different systems or the addition of secondary cells and the communication performance after access.

In a fourth aspect, the present application provides a communication method, which is applied to a network device, and the method includes: sending a first configuration message to a terminal device; the first configuration message is used to configure a frequency point for measuring a second wireless access technology, The first configuration message includes: frequency point information of the second wireless access technology, the network device is a network device supporting the first wireless access technology; receiving first measurement information from a terminal device, the first The measurement information is used to indicate first frequency point information, where the first frequency point information includes the first frequency point and bandwidth information on the first frequency point supported by the terminal device, and the first frequency point The information is frequency point information that satisfies a preset condition in the frequency point information of the second wireless access technology.

Through the above method, the network device can obtain the bandwidth information on the frequency point selected by the terminal device based on the first measurement information. The success rate of inter-system handover preparation or secondary cell addition and communication performance after access.

With reference to the third aspect or the fourth aspect, in a possible implementation manner, the frequency point information that satisfies the preset condition in the frequency point information of the second wireless access technology is: the frequency point whose reference signal measurement value is greater than the preset value .

Through the above method, the terminal device can select a frequency point with better communication quality for the terminal device according to the reference signal measurement value being greater than the preset value, and send it to the network device, so as to improve the performance of switching cells, adding secondary cells, or changing secondary cells.

With reference to the third aspect or the fourth aspect, in a possible implementation manner, the first configuration message includes second indication information, and the second indication information is used to instruct the terminal device to report the second Bandwidth information on the frequency point of the wireless access technology.

Through the above method, after receiving the second indication information, the terminal device can send the second indication information to the network device, so as to save signaling overhead.

With reference to the third aspect or the fourth aspect, in a possible implementation manner, the bandwidth information on the first frequency point is carried in any of the following messages: measurement report, UE assistance information.

Through the foregoing method, the terminal device can flexibly report the information of the first frequency point, thereby improving flexibility.

With reference to the third aspect or the fourth aspect, in a possible implementation manner, the bandwidth information on the first frequency point includes at least one of the following:

Uplink bandwidth information on the first frequency point;

Downlink bandwidth information on the first frequency point;

Bandwidth information corresponding to each subcarrier spacing in at least one subcarrier spacing on the first frequency point;

Uplink bandwidth information corresponding to each subcarrier spacing in at least one subcarrier spacing on the first frequency point;

Downlink bandwidth information corresponding to each subcarrier spacing in at least one subcarrier spacing on the first frequency point.

Through the above method, the network device can obtain the first frequency point information in multiple ways, that is, the bandwidth information on the first frequency point of the second wireless access technology supported by the terminal device, thereby improving flexibility.

With reference to the third aspect or the fourth aspect, in a possible implementation manner, the first measurement information includes: a second indication field.

The second indication field is used to indicate at least one piece of bandwidth information on the first frequency point;

Alternatively, the second indication field includes at least one second indication subfield, and one second indication subfield in the at least one second indication subfield is used to indicate that a subcarrier spacing on the first frequency corresponds to bandwidth information;

Alternatively, the second indication field includes at least one second indication subfield, and one second indication subfield in the at least one second indication subfield is used to indicate that a subcarrier spacing on the first frequency corresponds to Uplink bandwidth information or downlink bandwidth information;

Alternatively, the second indication field includes at least one of a second uplink indication field or a second downlink indication field, and the second uplink indication field is used to indicate the uplink bandwidth information on the first frequency point; the second downlink indication The field is used to indicate the downlink bandwidth information on the first frequency point.

With reference to the fourth aspect, in a possible implementation manner, a request message is sent to the target network device according to the first frequency point information; wherein the request message is used to request the terminal device to establish communication with the target network device connection, the channel bandwidth of the first frequency point supported by the terminal device is less than or equal to the carrier bandwidth of the first frequency point supported by the target network device, and greater than or equal to the carrier bandwidth of the first frequency point supported by the target network device The bandwidth of the initial bandwidth part of the first frequency point.

With reference to the fourth aspect, in a possible implementation manner, the request message is any of the following: a handover request message, a secondary node addition request message, or a secondary node change request message.

Through the above method, the network device can match the bandwidth of the target network device according to the frequency point information, and improve the success rate of cell handover or secondary cell addition and secondary cell change.

With reference to the fourth aspect, in a possible implementation manner, the reference signal measurement value of the serving cell of the terminal device is less than a first preset threshold, and the reference signal of other cells of the second radio access technology supported by the terminal device The measured value is greater than a second preset threshold, the first preset threshold is less than or equal to the second preset threshold, and the cell of the target network device is one of the other cells.

With reference to the fourth aspect, in a possible implementation manner, the throughput of the serving cell of the terminal device is less than a third preset threshold, and the reference signal measurement value of other cells of the second radio access technology supported by the terminal device is greater than a fourth preset threshold, the cell of the target network device is one of the other cells;

In a fifth aspect, the present application provides a communication device, and the communication device may be a terminal device, or a component in the terminal device, such as a chip. The communication device may be the terminal device described in any one of the first to second aspects above, and the terminal device is, for example, user equipment, or a baseband device in the user equipment. In an optional implementation manner, the communication device includes a baseband device and a radio frequency device. In another optional implementation manner, the communication device includes a processing module (sometimes also called a processing unit), a sending module, and a receiving module (sometimes also called a transceiver module, a transceiver unit, a receiving unit, and a sending unit). For the implementation of the transceiver module, refer to the introduction of the first aspect or the third aspect.

The device may include a processing module and a sending module. Optionally, the device may also include a receiving module. The device may execute any of the implementation methods of the first aspect or the third aspect.

In an optional implementation manner, the communication device further includes a storage module, the processing module is configured to be coupled to the storage module, and execute programs or instructions in the storage unit to enable the communication device to Execute the function of the terminal device described in any one of the first aspect or the third aspect.

In a sixth aspect, the present application provides a communication device, and the communication device may be a network device, or a component in the network device, such as a chip. The device may include a processing module and a receiving module. Optionally, the device may also include a sending module. The device may execute any of the implementation methods of the second aspect or the fourth aspect. The network equipment is, for example, a base station, or a baseband device in a base station. In an optional implementation manner, the communication device includes a baseband device and a radio frequency device. In another optional implementation manner, the communication device includes a processing module (sometimes also called a processing unit), a sending module, and a receiving module (sometimes also called a transceiver module, a transceiver unit, a receiving unit, and a sending unit). For the implementation of the transceiver unit, refer to the introduction of the second aspect or the fourth aspect.

In an optional implementation manner, the communication device further includes a storage module, the processing module is configured to be coupled to the storage module, and execute programs or instructions in the storage unit to enable the communication device to Execute the function of the network device described in any one of the second aspect or the fourth aspect.

In a seventh aspect, the present application provides a communication device, including a processor and a memory, the memory is used to store computer-executable instructions, and when the device is running, the processor executes the computer-executable instructions stored in the memory, so that the device Execute any method in the implementation methods of the first aspect or the third aspect above.

In an eighth aspect, the present application provides a communication device, including a processor and a memory, the memory is used to store computer-executable instructions, and when the device is running, the processor executes the computer-executable instructions stored in the memory, so that the device Execute any method in the implementation methods of the second aspect or the fourth aspect above.

In the ninth aspect, the embodiment of the present application also provides a computer-readable storage medium, where instructions are stored in the computer-readable storage medium, and when the computer-readable storage medium is run on a computer, the computer executes each of the above-mentioned first to fourth aspects. Implement any of the methods.

In a tenth aspect, an embodiment of the present application further provides a computer program product, the computer product includes a computer program, and when the computer program is run, any method in the implementation methods of the first aspect to the fourth aspect above is executed.

In an eleventh aspect, the embodiment of the present application further provides a chip system, including: a processor, configured to execute any of the implementation methods of the first aspect to the fourth aspect above.

In a twelfth aspect, the embodiment of the present application further provides a communication system, including the fifth aspect or the seventh aspect, and including the sixth aspect or the eighth aspect.

Description of drawings

FIG. 1 is a schematic diagram of a system architecture applicable to the present application;

FIG. 2 is a schematic diagram of a cell handover scenario provided by an embodiment of the present application;

FIG. 3 is a schematic flowchart corresponding to a communication method provided in an embodiment of the present application;

FIG. 4 is a schematic flowchart corresponding to a communication method provided in an embodiment of the present application;

FIG. 5 is a schematic flowchart corresponding to a communication method provided in an embodiment of the present application;

FIG. 6a is a schematic diagram of a dual connection scenario provided by an embodiment of the present application;

FIG. 6b is a schematic diagram of another dual connection scenario provided by the embodiment of the present application;

FIG. 6c is a schematic diagram of another multi-connection scenario provided by the embodiment of the present application;

FIG. 7 is a schematic flowchart corresponding to a communication method provided in an embodiment of the present application;

FIG. 8 is a schematic flowchart corresponding to a communication method provided in an embodiment of the present application;

FIG. 9 is a schematic flowchart corresponding to a communication method provided in an embodiment of the present application;

FIG. 10 is a schematic flowchart corresponding to a communication method provided in an embodiment of the present application;

FIG. 11 is a schematic structural diagram corresponding to a communication device provided in an embodiment of the present application;

FIG. 12 is a schematic structural diagram corresponding to a communication device provided in an embodiment of the present application;

FIG. 13 is a schematic structural diagram corresponding to a communication device provided in an embodiment of the present application.

Detailed ways

Hereinafter, some terms used in this application will be explained first, so as to facilitate the understanding of those skilled in the art.

1) Terminal equipment, including equipment that provides voice and/or data connectivity to users, for example, may include a handheld device with a wireless connection function, or a processing device connected to a wireless modem. The terminal device can communicate with the core network via a radio access network (radio access network, RAN), and exchange voice and/or data with the RAN. The terminal equipment may include user equipment, wireless terminal equipment, mobile terminal equipment, subscriber unit (subscriber unit), subscriber station (subscriber station), mobile station (mobile station), mobile station (mobile), remote station (remote station), Access point (access point, AP), remote terminal (remote terminal), access terminal (access terminal), user terminal (user terminal), user agent (user agent), or user equipment (user device), etc. . For example, it may include mobile phones (or "cellular" phones), computers with mobile terminal equipment, portable, pocket, hand-held, computer built-in or vehicle-mounted mobile devices, smart wearable devices, and the like. For example, personal communication service (personal communication service, PCS) telephone, cordless telephone, session initiation protocol (session initiation protocol, SIP) telephone, wireless local loop (wireless local loop, WLL) station, personal digital assistant (personal digital assistant, PDA), and other equipment. Also includes constrained devices, such as devices with low power consumption, or devices with limited storage capabilities, or devices with limited computing capabilities, etc. Examples include barcodes, radio frequency identification (radio frequency identification, RFID), sensors, global positioning system (global positioning system, GPS), laser scanners and other information sensing devices.

As an example but not a limitation, in this embodiment of the present application, the terminal device may also be a wearable device. Wearable devices can also be called wearable smart devices, which is a general term for the application of wearable technology to intelligently design daily wear and develop wearable devices, such as glasses, gloves, watches, clothing and shoes. A wearable device is a portable device that is worn directly on the body or integrated into the user's clothing or accessories. Wearable devices are not only a hardware device, but also achieve powerful functions through software support, data interaction, and cloud interaction. Generalized wearable smart devices include full-featured, large-sized, complete or partial functions without relying on smart phones, such as smart watches or smart glasses, etc., and only focus on a certain type of application functions, and need to cooperate with other devices such as smart phones Use, such as various smart bracelets, smart helmets, smart jewelry, etc. for physical sign monitoring.

2) A network device, for example including a base station (eg, an access point), may refer to a device in an access network that communicates with a wireless terminal device through one or more cells through an air interface. Network devices may be used to convert received over-the-air frames to and from Internet Protocol (IP) packets, acting as routers between the terminal device and the rest of the access network, which may include the IP network. The network device can also coordinate the attribute management of the air interface. For example, the network equipment may include an evolved base station (NodeB or eNB or e-NodeB, evolutional Node B) in a long term evolution (long term evolution, LTE) system or an evolved LTE system (LTE-Advanced, LTE-A), or It may also include the next generation node B (next generation node B, gNB) in the fifth generation mobile communication technology (fifth generation, 5G) new radio (new radio, NR) system or may also include the cloud access network (cloud radio access The centralized unit (centralized unit, CU) and the distributed unit (distributed unit, DU) in the network (CloudRAN) system are not limited in this embodiment of the present application.

3) Carrier aggregation. Carrier aggregation refers to a technology in which a network device configures multiple carriers for a terminal device, and the terminal device and network device use multiple carriers to jointly transmit data. The multiple carriers generally include a primary carrier component (PCC) and one or more secondary carrier components (SCC). The cell working on the primary carrier is the primary carrier cell (PCell), the PCell is the cell when the terminal initially accesses, and the base station where the PCell is located is responsible for radio resource control (radio resource control, RRC) communication with the terminal. The cell working on the secondary carrier is a secondary carrier cell (SCell), and the SCell can provide additional radio resources for the terminal.

4) Dual connectivity (DC), dual connectivity refers to a technology in which a terminal device establishes and maintains a communication connection with at least two network devices at the same time, and uses the wireless resources provided by the at least two network devices for data transmission. The at least two network devices are connected through a non-ideal backhaul link, and may be network devices supporting different access technologies. Under dual connectivity, two cell groups are included, namely the master cell group (MCG) and the secondary cell group (SCG). Both MCG and SCG can include a primary cell and one or more secondary cells. . Correspondingly, among the at least two network devices, the network device responsible for managing the MCG is the main network device, which is used to provide the control plane connection between the terminal device and the core network, and the network device responsible for managing the SCG is a secondary network device, which is used for the terminal Provide additional wireless resources.

5) Inter-system handover, inter-system handover refers to the handover of a terminal device between two networks of different communication standards. Handover from the originally accessed 5G network cell to the LTE network cell, etc.

6) The terms "system" and "network" in the embodiments of the present application may be used interchangeably. "Multiple items" means two or more, in view of this, "multiple items" can also be understood as "at least two items" in the embodiments of the present application. "At least two" can be understood as two or more, such as two, three or more. "At least one" can be understood as one or more, for example, one, two or more. In the same way, the understanding of descriptions such as "multiple" is similar. "And/or" describes the association relationship of associated objects, indicating that there may be three types of relationships, for example, A and/or B may indicate: A exists alone, A and B exist simultaneously, and B exists independently. In addition, the character "/", unless otherwise specified, generally indicates that the associated objects before and after are in an "or" relationship.

In the following description, unless otherwise stated, ordinal numerals such as "first" and "second" are only used to distinguish the purpose of description, and cannot be understood as indicating or implying relative importance, nor as indicating or Suggested order.

The technical solutions provided in the embodiments of the present application may be applied to a 5G system, an evolved long term evolution (advanced long term evolution, LTE-A) system, and the like. In addition, the technical solution can also be applied to future-oriented communication technologies. It should be understood that the network structure described in the embodiments of the present application is to more clearly illustrate the technical solutions of the embodiments of the present application, and does not constitute a limitation on the technical solutions provided by the embodiments of the present application. For the evolution of the architecture, the technical solutions provided by the embodiments of the present application are also applicable to similar technical problems.

Fig. 1 exemplarily shows an application scenario of the embodiment of the present application, and Fig. 1 includes an access network device, a core network device and a UE. The access network equipment, for example, works in the evolved UMTS terrestrial radio access (E-UTRA) system, or works in the NR system, or works in the next generation communication system or other communication systems middle. The access network device is, for example, a base station. Wherein, the access network equipment corresponds to different equipment in different systems, for example, in the 4G system, it may correspond to eNB, and in the 5G system, it may correspond to the access network equipment in 5G, such as gNB. Of course, the technical solutions provided by the embodiments of the present application can also be applied to future mobile communication systems, so the access network equipment in FIG. 1 can also correspond to network equipment in future mobile communication systems. Figure 1 takes the access network device as a base station as an example. In fact, referring to the introduction above, the access network device may also be a device such as an RSU. In addition, the UE in FIG. 1 is a mobile phone as an example. In fact, according to the introduction of the UE above, it can be seen that the UE in this embodiment of the present application is not limited to the mobile phone.

In addition, for ease of introduction, the various embodiments to be introduced later take the architecture shown in FIG. 1 as an example. For example, the access network equipment described in the various embodiments below is, for example, the access network equipment in the network architecture shown in Figure 1, and the core network equipment described in the various embodiments below is, for example, the network architecture shown in Figure 1 The core network equipment in the network architecture, and the UE described in the following embodiments may be the UE in the network architecture shown in FIG. 1 . Moreover, the core network device described in each of the following embodiments is, for example, an AMF, or may also be other devices located on the core network side.

The application will be described in further detail below in conjunction with the accompanying drawings.

Embodiments of the present application can be applied to various mobile communication systems, such as: Long Term Evolution (Long Term Evolution, LTE) system, Advanced long term evolution (Advanced long term evolution, LTE-A) system, Universal Mobile Telecommunication system (Universal Mobile Telecommunication System, UMTS), evolved Long Term Evolution (eLTE) system, 5G system (such as NR system), and other mobile communication systems such as future communication systems (such as 6G system).

scene one

The application scenario of this embodiment of the present application may be a scenario where a terminal device performs cell handover. Referring to FIG. 2 , it is a schematic diagram of a cell handover scenario. As shown in Figure 2, this scene includes at least two network devices 230, 231 (two are shown as an example in Figure 2, but this embodiment of the present application does not limit this) and at least one terminal device 101 (Figure 2 One is shown as an example, and this application does not limit it). Wherein, the

network devices

230 and 231 may be the access network devices in FIG. 1 .

The UE will move under the coverage of different network devices. When the UE moves from the coverage of one network device to the coverage of another network device, the source network device can initiate the handover process of the UE to the target network device.

Before the handover, for example, after the UE establishes a connection with the network device, the UE may report the capability of the UE to the network device (for example, the access network device and the core network). For example, after completing the RRC connection establishment process, the UE may report the UE capability to the network device through a UE capability message (UECapabilityInformation). The capabilities of the UE may include the capabilities of at least one radio access technology.

Taking the source network device as an example of an E-UTRA network device, the capability of the UE in the EUTRA radio access technology can be carried by the EUTRA container (EUTRA container/UE-EUTRA-Capability). The EUTRA container may include EUTRA capability information supported by the UE. The eutra capability information may include eutra bandwidth information supported by the UE under the E-UTRA (LTE) radio access technology. The bandwidth information supported by the UE under the E-UTRA (LTE) radio access technology may include: the frequency band (band) supported by the UE under the E-UTRA (LTE) radio access technology, the frequency band (band) supported by the UE under the E-UTRA (LTE) radio access technology, The bandwidth of the frequency band (band) supported by the input technology.

In addition, the UE can also report the capability of the UE in the NR radio access technology, which is carried in the NR container (NR container/UE-NR-Capability) of the UE in the NR radio access technology. The NR container may include nr capability information supported by the UE. The nr capability information may include nr bandwidth information supported by the UE under the NR radio access technology. The bandwidth information supported by the UE under the NR radio access technology may include: the frequency band (band) supported by the UE under the NR radio access technology, and the bandwidth of the frequency band (band) supported by the UE under the NR radio access technology.

However, the EUTRA network device only needs to parse the EUTRA container or EUTRA capability. Therefore, the EUTRA network device cannot parse the NR container or NR capability. Furthermore, the EUTRA network device cannot obtain the UE's NR radio access technology based on the NR container or NR capability. The supported frequency band (band) and the bandwidth of the frequency band (band) supported by the UE under the radio access technology.

In order to support inter-system handover, when the UE reports the UE capability message, it can also report the frequency band of the NR radio access technology supported by the UE in the EUTRA container, so that the source network device 230 can parse the EUTRA container to obtain the NR wireless access technology supported by the UE. After accessing the frequency band of the technology, select the target network device according to the frequency band of the NR radio access technology supported by the UE.

During the handover phase, the terminal device 101 will switch from the source network device 230 to the target network device 231 .

Taking the target network device as an NR network device as an example, after the source network device parses the EUTRA container and obtains the frequency band of the NR wireless access technology supported by the UE, the source network device can select the NR network that supports this frequency band according to the NR frequency band supported by the UE device as the target network device. For example, if the NR frequency band supported by the UE is n77, the source network device may select a target network device supporting n77 as the target network device, and initiate a handover request to the target network device.

After receiving the handover request, the target network device may verify the capabilities of the UE, and determine whether the UE is allowed to access the target network device. For example, the NR frequency band supported by the UE is n77, and the NR bandwidth supported by the UE is 100MHz. At this time, if the target network device supports n77, but the cell support bandwidth of the target network device is 80MHz, the UE cannot access the target network device.

In a scenario where the source network device is an NR network device and the target network device is an EUTRA network device, similar problems may also exist. The source network device can only obtain the frequency band of the EUTRA radio access technology supported by the UE by analyzing the NR container or NR capability. The source network device (NR network device) determines that the UE will switch according to the frequency band of the EUTRA radio access technology supported by the UE. If the target EUTRA network device arrives, the EUTRA bandwidth supported by the target EUTRA network device may not match the EUTRA bandwidth supported by the UE, thereby rejecting the handover of the UE.

In summary, since the source network device cannot resolve the container or capability of the different system supported by the UE, the source network device can only obtain the frequency band of the different system supported by the UE by analyzing the container or capability of the same system supported by the UE, but cannot determine the frequency band of the different system supported by the UE. The supported bandwidth on the system band. Therefore, the source network device determines the target network device to which the UE will switch to based on the different system frequency bands supported by the UE, which may cause the bandwidth supported by the target network device to not match the bandwidth supported by the UE, thereby rejecting the handover of the UE, resulting in handover preparation The probability of failure increases, and in order for the handover to succeed, a new handover is required, resulting in greater handover delay and greater signaling overhead.

example one

Based on the foregoing problems, an embodiment of the present application provides a communication method. The method can be applied to the system architecture shown in Figure 1 and the switching scenario shown in Figure 2, as shown in Figure 3, the method can include the following steps:

Step 301: The terminal device determines first capability information.

In a possible implementation manner, the terminal device generates the first capability information according to the capabilities supported by itself.

In this step 301, the first capability information is used to indicate the capability of the first wireless access technology supported by the terminal device, and the first capability information also includes: the frequency band of the second wireless access technology supported by the terminal device Information; the frequency band information includes: at least one frequency band corresponding to the second wireless access technology supported by the terminal device, and bandwidth information on each frequency band in the at least one frequency band, and the first wireless access technology It is a different radio access technology from the second radio access technology.

In some embodiments, the first capability information is used to indicate the capability of the first radio access technology supported by the terminal device, where the capability of the first radio access technology supported by the UE may include: packet data convergence protocol (Packet Data Convergence Protocol (PDCP) parameters, physical layer parameters, radio frequency parameters, measurement parameters and other specific capabilities corresponding to these capability parameters. The capability information corresponding to these capabilities may include frequency band combination, baseband processing capability, Supported carrier aggregation bandwidth class (ca-BandwidthClass), modulation and coding scheme (Modulation and Coding Scheme) and other capability information. The above capability parameters or capability information are example capability parameters or capability information, and the capability information of the UE may include one or more of the above capability parameters and one or more of the above capability information. The specific and complete capability information is not described here. repeat. In this application, the main concern is that the capability of the first radio access technology supported by the UE includes the bandwidth information of the first radio access technology supported by the UE. Correspondingly, the capabilities of other radio access technologies supported by the UE, for example, the capabilities of the second radio access technology supported by the UE, and the content included in the capability information of the third radio access supported by the UE may also refer to the first capability content will not be repeated here.

In a possible manner, the frequency band information of the second wireless access technology supported by the terminal device may be a frequency band (band) of the second wireless access technology supported by the terminal device, and the second wireless access technology supported by the terminal device The bandwidth information on the frequency band of the access technology may be at least one bandwidth on the frequency band (band) of the second radio access technology supported by the terminal device. Alternatively, the frequency band information of the second wireless access technology supported by the terminal device may be at least one frequency band (band) of the second wireless access technology supported by the terminal device, and the second wireless access technology supported by the terminal device The bandwidth information on the frequency band of the technology may be at least one bandwidth on at least one frequency band (band) of the second radio access technology supported by the terminal device.

In some embodiments, the first capability information may be carried in the container of the first radio access technology or the capability information of the first radio access technology of the terminal device and sent to the network device, so that the The network device may obtain the frequency band information of the second radio access technology supported by the UE by parsing the container of the first radio access technology or the capability information of the first radio access technology of the terminal device. The frequency band information includes: at least one frequency band corresponding to the second radio access technology supported by the terminal device, and bandwidth information on each frequency band in the at least one frequency band.

For example, taking the EUTRA radio access technology as the first radio access technology and the NR radio access technology as the second radio access technology as an example, the capability (first capability information) of the first radio access technology supported by the UE is The capability of the UE in the EUTRA radio access technology, the capability of the EUTRA radio access technology supported by the UE may include: frequency band information in the EUTRA radio access technology supported by the UE. The frequency band information supported by the UE under the E-UTRA (LTE) radio access technology may include: the frequency band (band) supported by the UE under the E-UTRA (LTE) radio access technology, The bandwidth of the frequency band (band) supported by the input technology. The first capability information may be carried in the container of the first radio access technology or in the capability information of the first radio access technology of the terminal device. At this time, the first capability information may be carried in the EUTRA container (EUTRA container) or EUTRA capability information (UE-EUTRA-Capability) of the terminal device.

The frequency band information of the second radio access technology supported by the UE, that is, the frequency band information of the NR supported by the UE, can also be carried in the EUTRA container or the EUTRA capability information of the terminal device, so that the network device supporting the EUTRA radio access technology can pass Analyzing the EUTRA container or the EUTRA capability information of the terminal device to obtain the frequency band information supported by the UE for receiving the second radio access. At this point, the EUTRA container may include: the UE's capabilities in the EUTRA radio access technology, at least one NR band supported by the UE in the NR SA radio access technology, and all the UE's supported NR SA radio access technologies The bandwidth on each NR band in at least one NR band.

The frequency band information supported by the UE under the NR radio access technology may include: the frequency band (band) supported by the UE under the NR radio access technology, and the bandwidth of the frequency band (band) supported by the UE under the NR radio access technology. The bandwidth can be understood as the bandwidth of the NR band level or the bandwidth supported by a single carrier under the NR band.

Possible frequency bands under NR wireless access technology may include: n77 and n78, where the uplink working frequency band corresponding to n77 is [3300, 4200] MHz, and the downlink working frequency band corresponding to n77 is [3300, 4200] MHz, the working frequency band of the uplink corresponding to n78 is [3300, 3800] MHz, and the working frequency band of the downlink corresponding to n77 is [3300, 3800] MHz.

In different frequency bands, network equipment or UE can support many kinds of bandwidth, for example, 5MHz, 10MH, 15MH, 20MH, 25MH, 30MH, 40MH, 50MH, 60MH, 80MH, 90MH, 100MH, 70MH, 45MH, 35MH, of course , may also include more bandwidth values, which are not limited in this application.

For another example, taking the first radio access technology as the NR radio access technology and the second radio access technology as the EUTRA radio access technology as an example, the capability of the first radio access technology supported by the UE, that is, the capability of the UE in the NR radio access technology The capability of entering the technology, the first capability information may be carried in the container of the first wireless access technology or the capability information of the first wireless access technology of the terminal device. At this time, the first capability information may be carried by an NR container (NR container) or NR capability information (UE-NR-Capability) of the terminal device. The frequency band information of the second radio access technology supported by the UE, that is, the frequency band information of the EUTRA supported by the UE, can also be carried by the NR container or the NR capability information of the terminal device, so that the network device supporting the NR radio access technology can pass Analyze the NR capability information of the NR container or the terminal device to obtain the frequency band information supported by the UE for EUTRA wireless access reception. At this time, the NR capability information of the NR container or the terminal device may include: the capability of the UE in the NR radio access technology, and at least one EUTRA band supported by the UE in the EUTRA radio access technology, and the UE's capability in the EUTRA radio access technology. The bandwidth on each EUTRA band in the at least one EUTRA band supported in the input technology. The capabilities in the NR radio access technology supported by the UE may include: frequency band information in the EUTRA radio access technology supported by the UE.

The frequency band information supported by the UE under the E-UTRA (LTE) radio access technology may include: the frequency band (band) supported by the UE under the E-UTRA (LTE) radio access technology, The bandwidth on the frequency band (band) supported under the input technology.

Among them, according to the LTE R8 protocol, LTE supports FDD (Frequency Division Duplex) and TDD (Time Division Duplex) two duplex modes; it supports a total of 31 frequency bands from 700MHz to 2.6GHz. That is, the frequency bands supported by the UE under the E-UTRA (LTE) radio access technology may include: 31 frequency bands in FDD and TDD modes. In different frequency bands, it can also support 6 bandwidth configurations including 1.4MHz, 3MHz, 5MHz, 10MHz, 15MHz and 20MHz.

In a possible implementation manner, the frequency band information of the second wireless access technology supported by the terminal device includes at least one of the following:

Uplink bandwidth information on at least one frequency band;

Downlink bandwidth information on at least one frequency band;

Exemplarily, the field of the bandwidth on the frequency band supported by the UE of the second radio access technology indicated in the first capability information may be: a first indication field including one or more bandwidth values. In a possible implementation manner, the signaling format of the first indication field may be a bit string (bit string) or a bit map (bitmap).

Considering that the frequency band information of the second wireless access technology supported by the terminal device may have various information, correspondingly, there may be various forms of the first indication field. The following uses modes a1 to a4 as examples to illustrate how many types of frequency band information there are. The manner of the first indication field corresponding to the case of this information.

Mode a1, the possible bandwidth on the band of the second radio access technology includes: N bandwidths, at this time, the first indication field in the first capability information may include a bit string of N (N is an integer greater than 1) bits or bitmap.

At this time, each bit may correspond to a bandwidth value, for example, the first bit of N bits corresponds to 5MHz, the second bit of N bits corresponds to 10MH, and so on. Each bit is used to indicate whether the corresponding bandwidth value is supported, for example, if the corresponding bit is set to 1, it means that the UE supports the corresponding bandwidth value, and if the corresponding bit is set to 0, it means that the UE does not support the corresponding bandwidth value.

Mode a2, the bandwidth on the band of the second radio access technology supported by the UE includes: M bandwidth values, at this time, one bandwidth value may correspond to one character, and the indication field may include M characters corresponding to the M bandwidth values.

For example, the bandwidth supported by the UE includes: 5MHz, 10MH. Wherein, the character corresponding to 5MHz is a, and the character corresponding to 10MH is b. At this time, the indication field may carry character a and character b, which are used to indicate that the bandwidth supported by the UE is 5MHz and 10MH.

It should be understood that the foregoing is only an example, and the content indicated by the bit value is not limited in this embodiment of the present application.

In manner a3, the bandwidth on the band of the second radio access technology supported by the UE may be distinguished from uplink bandwidth and downlink bandwidth. At this time, the frequency band information of the second radio access technology supported by the terminal device includes at least one item of uplink bandwidth information on at least one frequency band and downlink bandwidth information on at least one frequency band. Correspondingly, the first indication field includes at least one of a first uplink indication field or a first downlink indication field, and the first uplink indication field is used to indicate the frequency band of the second radio access technology supported by the terminal device The uplink bandwidth information on the network; the first downlink indication field is used to indicate the downlink bandwidth information on the frequency band of the second radio access technology supported by the terminal device.

For example, the first uplink indication field is used to indicate the uplink bandwidth on the band of the second radio access technology supported by the UE, and the first downlink indication field is used to indicate the downlink bandwidth on the band of the second radio access technology supported by the UE .

In combination with manner a1, the first uplink indication field may be a bit string (bit string) or a bit map (bitmap). Possible uplink bandwidths on the band of the second radio access technology include: N1 uplink bandwidths, at this time, the first uplink indication field may include a bit string or a bitmap of N1 (N1 is an integer greater than 1) bits.

At this time, each bit may correspond to an uplink bandwidth value, for example, the first bit corresponds to 5MHz, the second bit corresponds to 10MH, and so on. Each bit is used to indicate whether the UE supports the uplink bandwidth value. For example, if the corresponding bit is set to 1, it means that the UE supports the corresponding uplink bandwidth value; if the corresponding bit is set to 0, it means that the UE does not support the corresponding uplink bandwidth value. bandwidth value.

The first downlink indication field may be a bit string (bit string) or a bit map (bitmap). Possible downlink bandwidths on the band of the second radio access technology include: N2 downlink bandwidths. At this time, the first downlink indication field may include a bit string or a bitmap of N2 (N2 is an integer greater than 1) bits.

At this time, each bit may correspond to a downlink bandwidth value, for example, the first bit corresponds to 5MHz, the second bit corresponds to 10MH, and so on. Each bit is used to indicate whether the UE supports the downlink bandwidth value. For example, if the corresponding bit is set to 1, it means that the UE supports the corresponding downlink bandwidth value; if the corresponding bit is set to 0, it means that the UE does not support the corresponding downlink bandwidth value. bandwidth value.

Of course, method a2 can also be combined to distinguish uplink bandwidth and downlink bandwidth. For example, the bits in the first uplink indication field indicate the uplink bandwidth supported by the UE based on method a2, and the bits in the first downlink indication field indicate based on method a2 The downlink bandwidth supported by the UE. I won't repeat them here.

For another example, the first indication field may carry only the uplink bandwidth or only the downlink bandwidth by adding the identifiers of the uplink bandwidth and the downlink bandwidth. That is, the uplink bandwidth and the downlink bandwidth are sent respectively through the first indication field. For example, the first indication field includes: bits of the uplink bandwidth on the band of the second radio access technology supported by the UE, and an identifier of the uplink bandwidth. For another example, the first indication field includes: bits of the downlink bandwidth on the band of the second radio access technology supported by the UE, and an identifier of the downlink bandwidth.

In way a4, the bandwidth on the band of the second radio access technology supported by the UE can be distinguished by different subcarrier spacing (subcarrier spacing, SCS).

At this time, the frequency band information of the second radio access technology supported by the terminal device includes bandwidth information on at least one frequency band corresponding to each subcarrier spacing in at least one subcarrier spacing.

For example, the first indication field may include K first indication subfields, where each first indication subfield is used to indicate the bandwidth on the band of the second radio access technology with a subcarrier spacing supported by the UE.

That is, the first indication field includes at least one of the first uplink indication field or the first downlink indication field, and the first uplink indication field is used to indicate the frequency band of the second radio access technology supported by the terminal device. Uplink bandwidth information; the first downlink indication field is used to indicate the downlink bandwidth information on the frequency band of the second radio access technology supported by the terminal device.

A possible implementation manner, in combination with manner a1, each first indicator subfield may be a bit string (bit string) or a bit map (bitmap). Under each subcarrier interval, the possible bandwidth on the band of the second radio access technology includes: N bandwidths, at this time, each first indication subfield may include a bit string of N (N is an integer greater than 1) bits or bitmap.

At this time, each bit may correspond to a bandwidth value, for example, the first bit corresponds to 5MHz, the second bit corresponds to 10MH, and so on. Each bit is used to indicate whether the UE supports the bandwidth value, for example, if the corresponding bit is set to 1, it means that the UE supports the corresponding bandwidth value, and if the corresponding bit is set to 0, it means that the UE does not support the corresponding bandwidth value.

For example, taking the second radio access technology as NR as an example, for the FR1 NR band, the first indication field may include: 3 bit strings or bit maps, and the 3 bit strings correspond to subcarrier spacings of 15kHz, 30kHz, and 60kHz respectively. The bandwidth supported by the UE. For FR2 NR band, the first indication field may include: 2 bit strings or bit maps, and the 2 bit strings correspond to the bandwidth supported by the UE under the subcarrier spacing of 60kHz and 120kHz respectively.

For another example, the first indication field may include 5 bit strings or bit maps, where the 3 bit strings correspond to the bandwidth on the FR1 NR band supported by the UE under the subcarrier spacing of 15kHz, 30kHz, and 60kHz respectively. The two bit strings correspond to the bandwidth on the FR2 NR band supported by the UE under the subcarrier spacing of 60kHz and 120kHz respectively.

Of course, manner a2 may also be combined to determine each first indication subfield, for example, the bits in each first indication subfield indicate the bandwidth supported by the UE under the subcarrier spacing based on manner a2. I won't repeat them here.

In another possible implementation manner, the first indication field may also add an identifier of a subcarrier spacing, and the first indication field carries a corresponding first indication subfield. That is, through the first indication field, each type of first indication subfield is sent respectively.

For example, for the FR1 NR band, the first indication field includes: bits of the bandwidth on the FR1 NR band supported by the UE at a subcarrier spacing of 15kHz, and an identification of a subcarrier spacing of 15kHz.

For another example, the first indication field includes: bits of the bandwidth on the FR1 NR band supported by the UE at a subcarrier spacing of 30 Hz, and an indication that the subcarrier spacing is 30 Hz. For another example, the first indication field includes: bits of the bandwidth on the FR1 NR band supported by the UE at a subcarrier spacing of 60 Hz, and an identifier that the subcarrier spacing is 60 Hz.

For another example, for the FR2 NR band, the first indication field includes: bits of the bandwidth on the FR2 NR band supported by the UE at a subcarrier spacing of 60kHz, and an indication that the subcarrier spacing is 60kHz. For another example, the first indication field includes: bits of the bandwidth on the FR2 NR band supported by the UE at a subcarrier spacing of 120 Hz, and an indication that the subcarrier spacing is 120 Hz.

For another example, the frequency band information of the second wireless access technology supported by the terminal device may include uplink bandwidth information corresponding to each subcarrier spacing in at least one subcarrier spacing on at least one frequency band and at least one subcarrier spacing on at least one frequency band. At least one item of downlink bandwidth information corresponding to each subcarrier spacing in the carrier spacing. That is, combining mode a3 and mode a4, that is, distinguishing the uplink bandwidth from the downlink bandwidth, and also distinguishing the way of subcarrier spacing.

At this time, the first indication subfield may also be used to indicate the uplink bandwidth information corresponding to each subcarrier interval in at least one subcarrier interval of the second radio access technology supported by the terminal device; the first indication subfield may also be used Downlink bandwidth information corresponding to each subcarrier interval in at least one subcarrier interval of the second radio access technology supported by the terminal device.

For example, the first indication field includes at least one first indication subfield, and one first indication subfield in the at least one first indication subfield is used to indicate the first subcarrier spacing corresponding to a subcarrier spacing supported by the terminal device. 2. Uplink bandwidth information or downlink bandwidth information on the frequency band of the radio access technology. For specific manners, reference may be made to manner a3 and manner a4, which will not be repeated here.

It is considered that the terminal device may simultaneously generate the eutra capability information of the EUTRA container and the nr capability information of the NR container. Therefore, when the terminal device generates the frequency band information in the first capability information, it can refer to the capability information in other containers to generate, for example, the second capability information, so as to reduce the overhead and calculation complexity of the terminal device.

For example, taking the first radio access technology as E-UTRA and the second radio access technology as NR radio access technology as an example. At this time, the first capability information may be eutra capability information carried in the EUTRA container. The first capability information may include: the NR band supported by the UE, and the bandwidth supported by the UE on the NR band.

Considering that the nr capability information itself includes the NR band supported by the UE and the bandwidth supported by the UE on the NR band, when the terminal device determines the first capability information, the UE can use the bandwidth supported by the UE on the NR band in the nr capability information , determine the value of the bandwidth supported by the UE on the NR band in the first capability information.

For another example, take the first radio access technology as NR, and the second radio access technology as E-UTRA radio access technology as an example. At this time, the first capability information may be nr capability information carried in the NR container. The first capability information may include: the EUTRA band supported by the UE, and the bandwidth supported by the UE on the EUTRA band.

Considering that the eutra capability information itself includes the EUTRA band supported by the UE and the bandwidth supported by the UE on the EUTRA band, when the terminal device determines the first capability information, the UE can according to the EUTRA band in the eutra capability information. The supported bandwidth determines the value of the bandwidth supported by the UE on the EUTRA band in the first capability information.

Step 302: the terminal device sends the first capability information to the network device.

Correspondingly, the network device receives the first capability information.

It should be noted that the first capability information and the second capability information may be included in the UE capability information and sent together, or may be sent separately, which is not limited here.

For example, the UE capability information of the terminal device may include first capability information and second capability information, where the second capability information is used to indicate the capability of the second radio access technology supported by the terminal device, and the second The capability information includes: at least one frequency band corresponding to the second radio access technology supported by the terminal device, and bandwidth information on each frequency band in the at least one frequency band. The second capability information may be carried in the container of the second radio access technology and sent to the network device.

Step 303: The network device determines at least one frequency band corresponding to the second radio access technology supported by the terminal device and bandwidth information on each frequency band in the at least one frequency band according to the first capability information.

In this embodiment, the network device may determine, according to the first capability information, at least one frequency band corresponding to the second radio access technology supported by the terminal device, and bandwidth information on each frequency band in the at least one frequency band.

In step 302, there may be multiple ways for the terminal device to send the first capability information to the network device, and the way A1 and way A2 are used as examples below. Optionally, this embodiment of the present application may further include that the network device sends first indication information to the terminal device, where the first indication information is used to request the terminal device to report first capability information, and the terminal device receives the first indication information , and then execute step 301 or step 302. Exemplarily, the second indication information may be carried in an existing information element and sent.

In manner A1, the first capability information may be sent through a UE capability message.

For example, for a terminal device in a connected state, when the network device needs some capability information of the terminal device, the network device may initiate a UE capability request process to request the required capability information. For example, the network device may send a UE capability request message (UECapabilityEnquiry) to the UE, where the message is used to request the UE to send the UE's radio access capability in a certain radio access technology. The UE capability request message may include one or more RATs (for example: one or more RATs among eutra, nr, eutra-nr) indicating that UE capability information under this RAT is requested.

If a certain RAT is included in the UE capability request message and the UE supports the RAT, the UE needs to include the capability information of the RAT in the UE capability message, and set the RAT type parameter in the UE capability message to the RAT. For example, if the UE capability information of eutra is requested in the UE capability request message and the UE supports EUTRA access technology, the UE needs to include the capability information of eutra in the UE capability message, and set the RAT type parameter in the UE capability message to eutra, The capability information of eutra is specifically carried in the EUTRA container (EUTRA container) in the UE capability message or the EUTRA capability information (UE-EUTRA-Capability) of the terminal device. Similarly, the capability information of nr is specifically carried in the NR container (NR container) in the UE capability message or the NR capability information (UE-NR-Capability) of the terminal device, and the capability information of eutra-nr is specifically carried in the UE capability message In the MRDC container (MRDC container/UE-MRDC-Capability).

Optionally, the network device may also carry first indication information in the UE capability request message, where the first indication information is used to instruct the terminal device to report each frequency band in the at least one frequency band in the first capability information Bandwidth information on .

A possible implementation manner, the first indication information is used to indicate whether the UE needs to report the bandwidth on the frequency band of the different system supported by the UE, or the first indication information is used to indicate whether the UE is allowed to report the bandwidth of the different system supported by the UE Bandwidth on the frequency band.

In a possible manner, the network device is a network device supporting the first radio access technology, and the network device may instruct the terminal device to report the bandwidth on the different system frequency band supported by the UE as required. For example, the terminal device supports the second radio access technology and the third radio access technology. The network device may support the second radio access technology and the third radio access technology, or may not support the second radio access technology and the third radio access technology, or may support some of them, which is not limited here.

At this time, the network device may use the first indication information to instruct the terminal device to report the bandwidth on the frequency band of the second radio access technology supported by the UE. The network device may also use the first indication information to instruct the terminal device to report the bandwidth on the frequency band of the third radio access technology supported by the UE. Alternatively, the network device may also instruct the terminal device to report bandwidths in frequency bands of all radio access technologies other than the first radio access technology supported by the UE.

In yet another possible manner, the network device may also use the first indication information to instruct the terminal device to allow the terminal device to report the bandwidth on the frequency band of the different system supported by the UE. That is, when the terminal device does not support the different system, it may not report the bandwidth on the frequency band of the different system.

In a possible implementation manner, the network device may send a UE capability request message to the terminal device, and the UE capability request message carries the first indication information. In another possible implementation manner, the network device may send a configuration message to the terminal device, and the configuration message carries the first indication information. The first indication information and the second indication information may be sent together or separately, which is not limited here.

For example, when the network device is a network device supporting the first radio access technology, the first indication information is used to indicate whether the UE reports the bandwidth on the frequency band of the second radio access technology supported by the UE.

Taking E-UTRA as the first radio access technology and NR as the second radio access technology as an example, the first indication information is used to indicate whether the UE reports the bandwidth on the NR frequency band supported by the UE.

When the E-UTRA network device instructs the terminal device UE to report the bandwidth supported by the UE on the NR band through the first indication information, the terminal device may include in the first capability information: the bandwidth supported by the UE on the NR band.

When the E-UTRA network device instructs the terminal device UE not to report the bandwidth supported by the UE on the NR band through the first indication information, the terminal device may not include in the first capability information: the bandwidth supported by the UE on the NR band.

In some embodiments, the first indication information may be carried in UE capability request (UECapabilityEnquiry) information, and correspondingly, the terminal device may carry the first capability information in the UE capability message.

In manner A2, the first capability information may also be carried in UE assistance information and sent to the network device.

Optionally, the first indication information is carried in a configuration message and sent to the terminal device, for example, the configuration message may be an RRC reconfiguration message or the like. According to the configuration message, the terminal device confirms to send the first capability information to the network device through UE assistance information. Certainly, the first capability information may also be carried in other RRC messages and sent to the network device, which is not limited here.

Optionally, in step 304: the network device sends a switching request to the target network device of the terminal device according to the frequency band information.

For the handover scenario, the network device receiving the first capability information is the source network device, and the source network device determines the target network device of the terminal device according to the first capability information. Furthermore, the source network device may also send a switching request to the target network device after determining the target network device of the terminal device. Referring to FIG. 4 , it is a schematic flowchart corresponding to a method for switching cells provided in an embodiment of the present application. The method may include the following steps:

Step 401: The source network device sends a UE capability request message to the terminal device, and correspondingly, the terminal device receives the UE capability message sent by the source network device.

Optionally, the first indication information may be included in the UE capability request message.

It should be noted that step 401 is optional, and the specific implementation manner may refer to the manner in which the network device sends the first indication information to the terminal device in step 301, which will not be repeated here.

Step 402: The terminal device determines first capability information.

For details, refer to step 301, which will not be repeated here.

Step 403: the terminal device sends the first capability information to the source network device, and correspondingly, the source network device receives the first capability information sent by the terminal device.

Step 404: the terminal device sends a measurement report to the source network device, and correspondingly, the source network device receives the measurement report sent by the terminal device.

Optionally, the source network device may also send a configuration message to the terminal device, where the configuration message is used to configure a frequency point for measuring the same system, and the configuration message may also be used for configuring a frequency point for measuring a different system. Furthermore, the terminal device can measure the reference signal on the configured frequency point based on the configuration message, and generate a measurement report from the measurement result and send it to the source network device, so that the source network device determines that the terminal device accesses the target cell according to the measurement report signal quality to prepare for the subsequent handover to the target cell.

Step 405: The source network device determines the target network device of the terminal device according to the first capability information and the measurement report.

In some embodiments, the source network device may determine candidate target network devices of the terminal device according to the measurement report, and then determine the target network device among the candidate target network devices according to the first capability information.

In step 405, the source network device may determine a candidate target network device for the terminal device according to the measurement report.

Wherein, the measurement report may include a measurement value of at least one frequency point of a cell of the same system, and may also include a measurement value of at least one frequency point of a cell of a different system. Among them, the measured value can be reference signal receiving power (reference signal receiving power, RSRP), reference signal receiving quality (reference signal received quality, RSRQ), reference signal signal-to-noise ratio (reference signal-signal to noise ratio, RS-SINR) etc., this application does not make a limitation.

The measured value of at least one frequency point of the cell of the same system may be a measured value of the same frequency point of the cell of the same system as the source network device, or may be a measured value of a different frequency point of the cell of the same system of the source network device.

For example, when the source network device determines that the measured value of the serving cell of the terminal device is less than the first preset threshold, and the measured value of other cells of the same system supported by the terminal device is greater than the handover preset threshold, it may trigger For cell handover of the same system, the source network device can determine the target network device corresponding to the target cell according to the measurement value of at least one frequency point of the cell of the same system in the measurement report.

For inter-system cell handover, the source network device may determine a candidate target cell according to the measured value of at least one frequency point of a cell of a different system in the measurement report, and then determine a candidate target network device corresponding to the candidate target cell.

The source network device may determine the measurement values of other cells of the second radio access technology supported by the terminal device according to the measurement report of the terminal device. Wherein, other cells may be neighboring cells of the terminal device. Afterwards, candidate target network devices may be determined according to the measurement values of other cells. For example, taking target network devices corresponding to other cells whose measurement values of other cells of the second radio access technology supported by the terminal device are greater than a second preset threshold as candidate target network devices to be handed over, and when the candidate target network device is When there are more than one cell, the cell with the best measurement value, that is, the cell with the best channel quality can be preferentially used as the candidate target network device for this handover.

In some embodiments, the target network device may be determined by the source network device according to the first capability information and candidate target network devices. For example, after the source network device determines the candidate target network device according to the measurement report, it can determine whether there is a target network device meeting the handover condition among the candidate target network devices according to the frequency band information in the first capability information reported by the terminal device. , then step 406 is performed.

For example, the handover condition may include: the terminal device can access the target network device, and the terminal device can meet the bandwidth requirement for working in the target cell under the target network device.

In a possible implementation manner, the handover condition may include: the frequency band supported by the UE matches the frequency band of the target network device, and the bandwidth supported by the UE matches the bandwidth of the target network device. Wherein, matching the bandwidth supported by the UE with the bandwidth of the target network device may include: the channel bandwidth of the first frequency band supported by the terminal device is less than or equal to the carrier bandwidth of the first frequency band supported by the target network device, and greater than or equal to The bandwidth of the initial bandwidth part of the first frequency band supported by the target network device, where the first frequency band is one of at least one frequency band of the second radio access technology supported by the terminal device.

In a possible implementation manner, the network device may obtain the bandwidth of the frequency band supported by the candidate target network device according to the frequency band to which the frequency point of the candidate target network device determined in the measurement report belongs. Furthermore, according to the frequency band to which the frequency point of the candidate target network device belongs, and the bandwidth information supported by the candidate target network device under the frequency band, it is compared with the frequency band information of the terminal device to determine whether the candidate target network device satisfies the handover condition.

For example, it is determined that the carrier bandwidth on the first frequency band supported by the candidate target network device is greater than or equal to the channel bandwidth of the first frequency band supported by the terminal device, and the initial bandwidth part of the first frequency band supported by the candidate target network device is less than or equal to the channel bandwidth of the first frequency band supported by the terminal device, the candidate target network device may be used as the target network device.

Take the scenario where the channel bandwidth supported by the terminal device is an uplink bandwidth and a downlink bandwidth as an example.

In the uplink bandwidth scenario, the condition that the terminal device can work in the target cell is: if the maximum transmission bandwidth configuration of an uplink channel bandwidth supported by the terminal device (for the maximum transmission bandwidth configuration method, refer to the standards TS 38.101-1 and TS 38.101-2 ), less than or equal to the carrier bandwidth (may be indicated in the uplink common configuration (uplinkConfigCommon) of the SCS configuration of the initial uplink bandwidth part (bandwidth part, BWP)), and greater than or equal to the initial uplink BWP bandwidth.

In the downlink bandwidth scenario, the condition that the terminal device can work in the target cell is: if the maximum transmission bandwidth configuration of a downlink channel bandwidth supported by the terminal device (for the maximum transmission bandwidth configuration method, refer to the standards TS 38.101-1 and TS 38.101-2 ), which is less than or equal to the carrier bandwidth (which may be indicated in the downlink common configuration (downlinkConfigCommon) of the SCS configuration of the initial uplink BWP), and greater than or equal to the bandwidth of the initial downlink BWP.

When the candidate target network device does not meet the handover condition, the candidate target network device can be reselected, for example, a cell with better channel quality is selected as the candidate target network device for this handover, and after it is determined that the candidate target network device meets the handover condition, The candidate target network device is used as the target network device.

In the above example, the candidate target network device is determined according to the reference signal measurement value in the measurement report, and the target network device is determined according to the first capability information and the candidate target network device.

In some other embodiments, the candidate target network device may also be determined according to the first capability information, and the target network device is determined according to the reference signal measurement value in the measurement report and the candidate target network device. That is, according to the working conditions of the terminal equipment in the target cell, the adjacent cells are screened, and the candidate target network equipment corresponding to the candidate target cell where the terminal equipment can work is determined, and then, according to the reference signal measurement value in the measurement report, the candidate target network equipment is selected. A candidate target network device corresponding to a device with a larger reference signal measurement value is used as the target network device.

Step 406: The source network device sends a handover request message to the target network device, and correspondingly, the target network device receives the handover request message sent by the source network device.

Step 407: The target network device sends a handover confirmation message to the source network device, and correspondingly, the source network device receives the handover confirmation message sent by the target network device.

The target network device confirms that its own bandwidth supports terminal device access, and then sends a handover confirmation message to the source network device. In addition, in a possible scenario, when the target network device does not support terminal device access, the target network device sends a handover rejection message to the source network device.

Step 408: The source network device sends a switching command to the terminal device, and correspondingly, the terminal device receives the switching command sent by the source network device.

The following takes the source network device as an E-UTRA network device as an example. The source network device receives the first capability information reported by the UE. The first capability information can be stored in the EUTRA container (EUTRA container) or the EUTRA capability information (UE-UTRA) of the terminal device. carried in EUTRA-Capability). The source network device can analyze the eutra capability information corresponding to the UE and the frequency band information supported by the UE under the NR radio access technology (that is, the first capability information) according to the EUTRA container.

In the handover phase, according to the capability of the terminal device 101 to access the radio access technology (Radio Access Technology, RAT), the handover mode can be divided into same-system handover and different-system handover. Same-system handover means that the radio access technologies of the source network device 230 and the target network device 231 are the same. For example, the radio access technologies of the source network device 230 and the target network device 231 are both EUTRA (LTE), and the radio access technologies of the source network device 230 and the target network device 231 are both NR. Inter-system handover means that the radio access technologies of the source network device 230 and the target network device 231 are different. For example, the radio access technology of the source network device 230 is LTE, and the radio access technology of the target network device 231 is NR. Alternatively, the radio access technology of the source network device 230 is NR, and the radio access technology of the target network device 231 is LTE.

According to the requirement that the UE can access the target network device and work in the target cell under the target network device, the frequency band supported by the UE matches the frequency band of the target network device, and the bandwidth supported by the UE matches the bandwidth of the target network device. Wherein, matching the bandwidth supported by the UE with the bandwidth of the target network device may include: the channel bandwidth of the first frequency band supported by the terminal device is less than or equal to the carrier bandwidth of the first frequency band supported by the target network device, and greater than or equal to The bandwidth of the initial bandwidth part of the first frequency band supported by the target network device, where the first frequency band is one of at least one frequency band of the second radio access technology supported by the terminal device.

Therefore, in the scenario where the UE is handed over to the target cell of the same system, the source network device can determine the frequency band information supported by the UE under the E-UTRA (LTE) radio access technology according to the first capability information, and perform the target cell of the same system. switch. For example, when the source network device determines that the channel quality of the current serving cell satisfies the handover threshold, the source network device may determine a cell with better channel quality according to the channel quality measured by the UE at the frequency points of neighboring cells of the same system. And among the cells with better channel quality, the cell whose bandwidth information supported by the UE matches is selected as the target cell.

In the scenario where the UE is handed over to the target cell of a different system, that is, when the source network device confirms that the UE is handed over to the NR network device, the E-UTRA network device can determine the second radio interface supported by the terminal device according to the measurement report of the terminal device. measurements of other cells of the incoming technology (eg, NR). Wherein, the measurement value may be RSRP, RSRQ, RS-SINR, etc., which are not limited in this application. Afterwards, candidate target network devices may be determined according to the measurement values of other cells. For example, taking target network devices corresponding to other cells whose measurement values of other cells of the second radio access technology supported by the terminal device are greater than a second preset threshold as candidate target network devices to be handed over, when the candidate target network device is When there are more than one cell, the cell with the best measurement value, that is, the cell with the best channel quality can be preferentially used as the candidate target network device for this handover.

Furthermore, the source network device can parse the EUTRA container to obtain the first capability information, that is, obtain the NR frequency band supported by the UE under the NR SA access technology and the bandwidth on the NR frequency band supported by the UE under the NR SA access technology. The source network device can determine the NR network device deployed on the NR frequency band according to the NR frequency band supported by the terminal device and the bandwidth supported on the NR frequency band, and then according to the carrier bandwidth on the first frequency band supported by the NR network device is greater than or equal to The channel bandwidth of the first frequency band supported by the terminal device, and the bandwidth of the initial bandwidth part of the first frequency band supported by the NR network device is less than or equal to the bandwidth of the initial bandwidth part of the first frequency band supported by the terminal device, determine the NR The network device may be a target network device, and the determined NR network device in the NR frequency band is used as the target network device to which the UE is to be handed over, and initiates a handover request to the target network device.

After the target network device receives the handover request, the target network device determines whether the UE can access a cell under the target network device according to the NR bandwidth supported by the UE. Because the source network device obtains the NR frequency band supported by the UE and the bandwidth supported on the NR frequency band according to the first capability information. Therefore, the source network device determines the target network device to which the UE will switch to based on the NR frequency band supported by the UE, which may satisfy the matching between the bandwidth supported by the target network device and the bandwidth supported by the UE, which improves the success rate of the UE's handover preparation and reduces the handover time. Delay and signaling overhead.

In a handover scenario where the network equipment is the NR network equipment, for example, the NR network equipment handovers the UE to the E-UTRA (LTE) network equipment. At this time, the source network device is an NR network device, and the target network device is an E-UTRA network device.

The NR network device receives the first capability information reported by the UE, which may include NR container (NR container) or NR capability information (UE-NR-Capability) of the terminal device. The NR network device parses the NR container to obtain the NR capability information corresponding to the UE and the frequency band information supported by the UE under the E-UTRA radio access technology. The first capability information includes: information about at least one E-UTRA frequency band (band) supported by the E-UTRA radio access technology of the UE, and bandwidth information on at least one E-UTRA band supported by the UE.

During the handover phase, the NR network equipment can determine the E-UTRA network equipment deployed on the E-UTRA frequency band according to the E-UTRA frequency band and the supported bandwidth, so that the determined E-UTRA network equipment on the E-UTRA frequency band - The UTRA network device serves as the target network device to which the UE will handover, and initiates a handover request to the target network device.

For example, the frequency band supported by the UE is band1, and the bandwidth supported by the UE is 3MHz. At this time, if the network device supports band1, and the cell bandwidth supported by the network device is greater than 3MHz and greater than the bandwidth of the initial BWP, the source network device will use the network The device is identified as a target network device.

After the target network device receives the handover request, the target network device determines that the UE can access the cell under the target network device according to the E-UTRA (LTE) frequency band supported by the UE and the bandwidth supported by the UE. Therefore, the target network device can complete the handover process and establish a connection with the UE.

Through the above method, the network device can obtain the bandwidth capability on the band of the different system supported by the UE by parsing its corresponding container, which helps to improve the success rate of network device handover preparation.

Example two

Referring to FIG. 5 , it is a schematic flowchart corresponding to a communication method provided by an embodiment of the present application. The method can be applied to the system shown in the switching scene shown in Figure 1 and Figure 2, as shown in Figure 4, the method can include the following steps:

Step 501: The network device sends a first configuration message to the terminal device.

Wherein, the first configuration message may be used to configure and measure at least one frequency point.

In some embodiments, the first configuration message is used to configure at least one frequency point for measuring the same system, and the first configuration message may also be used for configuring at least one frequency point for measuring a different system. Furthermore, the terminal device may measure the reference signal on at least one configured frequency point based on the first configuration message, and generate a measurement report from the measurement result and send it to the source network device, so that the source network device can determine the terminal The signal quality of the device accessing the target cell to prepare for the subsequent handover to the target cell.

For example, consider the scenario of inter-system measurement, the network device is a network device supporting the first radio access technology, at this time, the first configuration message can be used to configure the frequency points for measuring the second radio access technology , the first configuration message includes: frequency point information of the second radio access technology.

Optionally, the network device may also send second indication information to the terminal device, where the second indication information is used to instruct the terminal device to report the bandwidth information on the frequency point of the second wireless access technology supported by the terminal device . In a possible implementation manner, the second indication information may be carried in the first configuration message, or may be sent separately, which is not limited here. Wherein, the first configuration message may be an RRC reconfiguration message.

A possible implementation manner, the second indication information is used to indicate whether the UE needs to report the bandwidth on at least one frequency point of the different system supported by the UE, or the second indication information is used to indicate whether the UE is allowed to report the bandwidth supported by the UE The bandwidth of at least one frequency point of different systems. The implementation manner of the second indication information may refer to the first indication information, except that the first indication information is used to indicate whether the terminal device reports the bandwidth on the frequency band supported by the terminal device.

Step 502: The terminal device generates first measurement information.

Wherein, the first measurement information is used to indicate first frequency point information, and the first frequency point information includes the first frequency point and bandwidth information on the first frequency point supported by the terminal device, so The first frequency point information is frequency point information that satisfies a preset condition in the frequency point information of the second wireless access technology.

In some embodiments, the frequency point information satisfying a preset condition in the frequency point information of the second radio access technology is: a frequency point whose measured value is greater than a preset value. Wherein, the measurement value may be RSRP, RSRQ, RS-SINR, etc., which are not limited in this application.

In a possible scenario, the first measurement information may be used to indicate multiple first frequency point information, that is, the terminal device may measure at least one frequency point indicated for measurement according to the first configuration message, and obtain multiple first frequency point information after measurement. Frequency information. Afterwards, the terminal device may generate first measurement information according to the measured at least one first frequency point information and capabilities supported by the terminal device itself.

In some embodiments, the at least one first frequency point information of the second wireless access technology supported by the terminal device may include at least one frequency point of the second wireless access technology supported by the terminal device, and the second wireless access technology supported by the terminal device The bandwidth information on the frequency point of the incoming technology may be at least one bandwidth on at least one frequency point of the second wireless access technology supported by the terminal device, that is, the bandwidth information on the frequency point of the second wireless access technology supported by the terminal device The bandwidth information may be the bandwidth on frequency points of different systems supported by the UE.

Wherein, the frequency point of the different system may be the frequency point of the different system in the measurement report of the UE. That is, the bandwidth supported by the UE in the first measurement information is the frequency point with better channel quality determined by the UE after the measurement of different system cells/different system frequency points. Therefore, the network device selects the target to be handed over according to the first measurement information. When using a cell, it is easier to switch to a cell with better channel quality, improving the switching performance.

Wherein, taking the different system as an NR system as an example, the NR frequency point may belong to a frequency point on one NR band. Taking the different system as an E-UTRA system as an example, the E-UTRA frequency point may belong to a frequency point on one E-UTRA band.

For example, when the UE finds that the channel quality of the serving cell of the current network equipment is not good enough, the UE can start inter-system measurement, such as measuring the quality of NR network frequency points under the E-UTRA network. When the measurement result satisfies the corresponding measurement report trigger event, the UE can report a measurement report (measurement report) to the network device, and the measurement report includes the measurement result of the different-system cell/different-system frequency point.

Exemplarily, the bandwidth field of at least one first frequency supported by the UE of the second radio access technology indicated in the first measurement information may be: a second indication field including one or more bandwidth values.

In a possible implementation manner, the signaling format of the second indication field may be a bit string (bit string) or a bit map (bitmap).

There may be multiple manners of the second indication field, and the manners b1 to b5 are used as examples below to illustrate.

Mode b1, the possible bandwidth of at least one first frequency point of the second radio access technology includes: N0 bandwidths, at this time, the second indication field in the first measurement information may include N0 (N0 is an integer greater than 1 ) bit string or bitmap of bits.

At this time, each bit may correspond to a bandwidth value, for example, the first bit of N0 bits corresponds to 5 MHz, the second bit of N bits corresponds to 10 MH, and so on. Each bit is used to indicate whether the corresponding bandwidth value is supported, for example, if the corresponding bit is set to 1, it means that the UE supports the corresponding bandwidth value, and if the corresponding bit is set to 0, it means that the UE does not support the corresponding bandwidth value.

It should be noted that N0 may also be equal to the number N of possible bandwidths corresponding to the band to which at least one first frequency point of the second radio access technology belongs. The structure of the first indication field and the indication manner can also be used, the difference is that the second indication field includes the bandwidth supported by the UE on at least one first frequency point of the second radio access technology.

Mode b2, the bandwidth of at least one first frequency point of the second radio access technology supported by the UE includes: M0 bandwidth values, at this time, one bandwidth value may correspond to one character, and the indication field may include M0 bandwidth values corresponding to M0 characters.

For example, the bandwidth of at least one first frequency point of the second radio access technology supported by the UE includes: 5MHz and 10MH. Wherein, the character corresponding to 5MHz is a, and the character corresponding to 10MH is b. At this time, the indication field may carry character a and character b, which are used to indicate that the bandwidth supported by the UE is 5MHz and 10MH.

It should be noted that, the indication manner of the second indication field in manner b2 may also follow the indication manner of the first indication field in manner b1, the difference is that the second indication field includes at least one first indication field of the second radio access technology. The bandwidth supported by the UE on a frequency point.

In manner b3, the bandwidth of at least one first frequency point of the second radio access technology supported by the UE may be distinguished from uplink bandwidth and downlink bandwidth. For example, the second indication field may include a second uplink indication field and a second downlink indication field. Wherein, the second uplink indication field is used to indicate the uplink bandwidth on at least one first frequency point of the second radio access technology supported by the UE, and the second downlink indication field is used to indicate at least one frequency point of the second radio access technology supported by the UE. Downlink bandwidth on a first frequency point.

The uplink bandwidth and downlink bandwidth can be distinguished in combination with mode b1 or mode b2. For example, the bits in the second uplink indication field indicate the uplink bandwidth supported by the UE based on mode b1 or mode b2, and the bits in the second downlink indication field are based on Way b1 or way b2 indicates the downlink bandwidth supported by the UE. I won't repeat them here.

For another example, the second indication field may carry only the uplink bandwidth or only the downlink bandwidth by adding the identifiers of the uplink bandwidth and the downlink bandwidth. That is, the uplink bandwidth and the downlink bandwidth are respectively sent through the second indication field. For example, the second indication field includes: bits of the uplink bandwidth on the frequency point of the second radio access technology supported by the UE, and an identifier of the uplink bandwidth. For another example, the second indication field includes: bits of the downlink bandwidth on the frequency point of the second radio access technology supported by the UE, and an identifier of the downlink bandwidth.

In way b4, the bandwidth on the frequency point of the second radio access technology supported by the UE can be divided into different subcarrier spacings (subcarrier spacing, SCS).

For example, the second indication field may include K0 second indication subfields. Wherein, each second indication subfield is used to indicate the bandwidth on the frequency point of the second radio access technology with a subcarrier spacing supported by the UE.

A possible implementation manner, in combination with manner b1, each second indicator subfield may be a bit string (bit string) or a bit map (bitmap). Under each subcarrier interval, the possible uplink bandwidth on the band of the second radio access technology includes: N3 uplink bandwidths, at this time, each second indication subfield may include N3 (N3 is an integer greater than 1) bits bitstring or bitmap. Of course, manner b2 may also be combined to determine each first indication subfield, for example, the bits in each first indication subfield indicate the bandwidth supported by the UE under the subcarrier spacing based on manner b2. I won't repeat them here.

In another possible implementation manner, the second indication field may also add an identifier of a subcarrier spacing, and the second indication field carries a corresponding second indication subfield. That is, through the second indication field, each type of second indication subfield is sent separately.

For example, for the FR1 NR band, the second indication field includes: bits of the bandwidth of the first frequency point on the FR1 NR band supported by the UE at a subcarrier spacing of 15kHz, and an identification of a subcarrier spacing of 15kHz.

For another example, the first indication field includes: bits of the bandwidth on the FR1 NR band supported by the UE at a subcarrier spacing of 30 Hz, and an indication that the subcarrier spacing is 30 Hz. For another example, the second indication field includes: bits of the bandwidth of the first frequency point on the FR1 NR band supported by the UE at a subcarrier spacing of 60 Hz, and an indication that the subcarrier spacing is 60 Hz.

For another example, for FR2 NR band, the first indication field includes: the bit of the bandwidth of the second frequency point on the FR2 NR band supported by the UE at the subcarrier spacing of 60kHz, and the subcarrier spacing is 60kHz. For another example, the second indication field includes: the bits of the bandwidth of the second frequency point on the FR2 NR band supported by the UE under the subcarrier spacing of 120Hz, and the subcarrier spacing of 120Hz.

For another example, in a combination of mode b3 and mode b4, the second indication field includes at least one second indication subfield, and one second indication subfield in the at least one second indication subfield is used to indicate that the terminal Bandwidth information corresponding to a subcarrier spacing on the frequency point of the second wireless access technology supported by the device;

Alternatively, the second indication field includes at least one second indication subfield, and one second indication subfield in the at least one second indication subfield is used to indicate the second radio access technology supported by the terminal device Uplink bandwidth information or downlink bandwidth information corresponding to a subcarrier spacing on a frequency point. For details, reference may be made to the combination of the manner a3 and the manner a4, which will not be repeated here.

In way b5, the terminal device may also report the bandwidth information of the frequency band where the first frequency point is located after determining the bandwidth information of the first frequency point.

For example, the second indication field may be used to indicate at least one piece of bandwidth information on the frequency band where the first frequency point is located;

Alternatively, the second indication field includes at least one second indication subfield, and one second indication subfield in the at least one second indication subfield is used to indicate a subfield on the frequency band where the first frequency point is located. Bandwidth information corresponding to carrier spacing;

Alternatively, the second indication field includes at least one second indication subfield, and one second indication subfield in the at least one second indication subfield is used to indicate a subfield on the frequency band where the first frequency point is located. Uplink bandwidth information or downlink bandwidth information corresponding to the carrier spacing;

Alternatively, the second indication field includes at least one of a second uplink indication field or a second downlink indication field, and the second uplink indication field is used to indicate uplink bandwidth information on the frequency band where the first frequency point is located; The second downlink indication field is used to indicate the downlink bandwidth information on the frequency band where the first frequency point is located.

In this example, the indication manner of the second indication field may refer to the indication manner of the first indication field, which will not be repeated here.

Step 503: the terminal device sends the first measurement information to the network device.

Correspondingly, the network device receives the first measurement information sent by the terminal device.

It should be noted that the first measurement information is carried in the measurement inclusion or UE assistance information and sent together, or may be sent separately, which is not limited here.

In step 503, there may be multiple manners for the terminal device to send the first measurement information to the network device, and the manners B1-B2 are described below as examples.

In manner B1, the UE may report the first measurement information when the network device requests the UE to report.

At this time, the terminal device may carry the first measurement information in the measurement report. Wherein, the measurement report may be used to indicate the measurement value of at least one first frequency point measured by the terminal device, and the measurement report may further include: at least one first frequency point information, and each first frequency point information includes the first A frequency point and bandwidth information on the first frequency point supported by the terminal device.

Taking the network device as an E-UTRA network device as an example, the E-UTRA network device can send second indication information in the first configuration message, and the second indication information is used to indicate whether the UE needs to report the bandwidth supported by the UE on the NR band Or the bandwidth supported by the UE on different system frequency points, for example, the first configuration message may be an RRC reconfiguration message and the like.

When the E-UTRA network device sends the second indication information to the UE, instructing the UE to report the bandwidth supported by the UE on the NR band/different system frequency point, the UE can report the bandwidth supported by the UE on the NR band in the "UE auxiliary information" or The bandwidth supported by the UE on other frequency points of different systems. When the E-UTRA network device sends the second indication information to the UE, indicating that the UE does not need or is not allowed to report the bandwidth supported by the UE on the NR band/different system frequency point, the UE may not report NR in the "UE auxiliary information" The bandwidth supported by the UE on the band or the bandwidth supported by the UE on other frequency points of different systems.

Taking the network device as an NR network device as an example, the NR network device can send the second indication information in the configuration message, and the second indication information is used to indicate whether the UE needs to report the bandwidth supported by the UE on the E-UTRA band, or the different system frequency Regarding the bandwidth supported by the UE, for example, the configuration message may be an RRC reconfiguration message, etc.

In manner B2, after completing the measurement, the UE may actively report the first measurement information according to the measurement result.

In some embodiments, the terminal device may determine to trigger reporting of UE auxiliary information after reporting the measurement report, or determine to trigger reporting of UE auxiliary information while reporting the measurement report. Wherein, the terminal device may indicate the measurement value of at least one first frequency point measured by the terminal device in the measurement report. The UE assistance information may carry at least one first frequency point information, and each first frequency point information includes the first frequency point and bandwidth information on the first frequency point supported by the terminal device.

In a possible implementation, after the network device receives the measurement report sent by the UE, the network device can determine that the channel quality of the UE in the current serving cell is not good enough according to the channel quality of the adjacent cell frequency measured by the UE. The measurement report reported by the UE determines that the terminal device meets the conditions for triggering cell handover. For example, the source network device may use a cell with a high channel quality at a neighboring cell frequency measured by the UE as a candidate target cell after handover. Optionally, the source network device may also select the frequency point information in the first measurement information from The target cell is determined from the candidate target cells, so that the network device corresponding to the target cell is used as the target network device.

Of course, the source network device may first determine the candidate target cell based on the frequency point information in the first measurement information, and then compare the reference signal measurement values of the candidate target cells according to the measurement report, and select a cell with high channel quality as the handover after the target area. For a specific manner, reference may be made to step 405, which will not be repeated here.

In a possible scenario, when the terminal device 101 is attached to the source network device 230, it can periodically send a signal measurement report to the source network device 230, and the source network device 230 judges whether the terminal device 101 needs to be connected according to the signal measurement report of the terminal device 101. Handover to other network devices, and select a target network device 231 to be switched for the terminal device according to the signal measurement report and the first measurement information, and notify the target network device 231 to prepare access resources for the terminal device 101, and notify the terminal device 101 Access the target network device 231 .

Optionally, the network device may indicate whether the UE needs to report the bandwidth supported by the UE on a different system frequency point when configuring the measurement (for example, in an RRC reconfiguration message).

If the E-UTRA network device indicates that it needs or allows the UE to report the bandwidth supported by the UE on the different system frequency point, the UE will report the bandwidth supported by the UE on the different system frequency point in the "Measurement Report"; if the E-UTRA network device indicates that it does not need Or the UE is not allowed to report the bandwidth supported by the UE on the different system frequency, then the UE will not report the bandwidth supported by the UE on the different system frequency in the "measurement report".

Step 504: The network device determines first frequency point information according to the first measurement information.

In a possible implementation manner, the network device may determine the first frequency point information according to the first measurement information, where the first frequency point information includes: the first frequency point of the second wireless access technology supported by the terminal device point and the bandwidth on the first frequency point of the second wireless access technology supported by the terminal device.

In the handover scenario, the network device may be a source network device. At this time, the source network device may determine the target network device of the terminal device according to the first frequency point information and the measurement report.

Optionally, step 505: the network device sends a switching request to the target network device of the terminal device according to the first frequency point information.

For example, the network device may determine a candidate target network device based on the measurement report. For a specific implementation manner, reference may be made to step 405, which will not be repeated here. Furthermore, the network device determines the target network device by comparing the frequency band information supported by the candidate target network device and the bandwidth information of the candidate target network device on the supported frequency band with the first frequency band information corresponding to the first frequency point information.

In another possible implementation manner, the network device may determine the first frequency band information according to the first frequency point information. Wherein, the first frequency band information includes: frequency band information of the frequency band where the first frequency point is located and bandwidth information of the second radio access technology supported by the terminal device on the frequency band where the first frequency point is located. In order to select the target network device later, the first frequency band information can be compared with the frequency band information supported by the candidate target network device and the bandwidth information of the candidate target network device on the supported frequency band to determine the target network device.

Optionally, the network device may also send a handover request to the target network device after determining the target network device of the UE. The manner in which the network device determines the target network device of the UE according to the first measurement information and the measurement report may refer to the manner in which the network device determines the target network device of the UE according to the frequency band information and the measurement report in the first capability information in FIG. 4 . This will not be repeated here.

Through the foregoing method, the network device can obtain the bandwidth capability of the frequency point of the different system supported by the UE. Effectively reduce the probability of cell handover preparation failure, and reduce cell handover delay and signaling overhead. And the implementation complexity of the network device is not increased. Compared with Example 1, it helps to reduce signaling overhead.

scene two

The application scenario of this application may also be that the terminal device works in a multi-connection scenario through multiple wireless receiving technologies. Wireless access technologies include: New radio technology (New radio, NR), Evolved-UMTS Terrestrial Radio Access technology (Evolved-UMTS Terrestrial Radio Access, E-UTRA), E-UTRA-NR technology, universal mobile communication System terrestrial radio access technology (UMTS Terrestrial Radio Access, UTRA), enhanced data rate GSM evolution radio access technology (GSM EDGE Radio Access Network, GERAN), cdma2000-1XRTT.

For example, dual connectivity (DC) and multiple connections of more than two. The scenario where the UE is simultaneously connected to two base stations with different access technologies can be called Multi-RAT Dual Connectivity (MR-DC). In a dual connectivity scenario, a terminal device can simultaneously access a primary network device and a secondary network device (also referred to as a source device and a target device). For example, for the E-UTRA-NR technology, the operator can configure the E-UTRA base station and the NR base station to communicate with the UE during deployment, that is, the frequency of E-UTRA is used to transmit data, and the frequency of NR is also used to transmit data. The throughput of the UE is improved. It should be noted that the primary network device and the secondary network device may be deployed on the same site, or may be deployed on different sites. Moreover, when the primary network device and the secondary network device can be deployed at the same site, the primary network device and the secondary network device can share the same set of hardware devices, or use different hardware devices.

Referring to FIG. 6a, it is a schematic diagram of a dual connectivity scenario in which the primary network device and the secondary network device are deployed at different sites. Among them, the network device 201 may represent the primary network device, the network device 202 may represent the secondary network device, and the primary network device may be an LTE network device (such as eNB), a 5G network device (such as gNB) or a network device in a future communication system. One, the auxiliary network device may also be one of LTE network device, 5G network device or network device in the future communication system. In addition, the primary network device and the secondary network device may be network devices of the same standard, such as eNBs, or network devices of different standards, such as the primary network device is an eNB, and the secondary network device is a gNB. This application does not limit the communication modes of the primary network device and the secondary network device.

When the E-UTRA base station serves as the master base station (Master Node, MN) and the NR base station serves as the secondary base station (Secondary Node, SN), this scenario is specifically called E-UTRA-NR dual connectivity (E-UTRA-NR dual connectivity) in MR-DC. UTRA-NR Dual Connectivity, EN-DC); when the NR base station serves as the primary base station and the E-UTRA base station serves as the secondary base station, the scenario is specifically called NR-E-UTRA dual connectivity (NR-E-UTRA) in MR-DC UTRA Dual Connectivity, NE-DC).

In an embodiment of the present application, the main network device works in the LTE system, and the main network device is an LTE network device, that is, the main network device can cover one or more LTE cells. The auxiliary network equipment works in the NR system, and the auxiliary network equipment is 5G network equipment, that is, the auxiliary network equipment can cover one or more NR cells. Correspondingly, the terminal device 101 supports both the LTE system and the NR system, that is, the terminal device 101 can simultaneously access the LTE cell formed by the primary network device coverage and the NR cell formed by the secondary network device coverage. Wherein, the cell covered by the primary network device accessed by the terminal device may also be called a primary cell (PCell), and the cell covered by the secondary network device accessed by the terminal device may be called a secondary cell (second cell). Exemplarily, the terminal device 101 may perform service transmission through the primary cell and at least one secondary cell, that is, when the terminal device 101 performs data transmission with the primary network device, it may also perform data transmission with the secondary network device.

Referring to FIG. 6b, it is a schematic diagram of a dual connectivity scenario in which the primary network device and the secondary network device are deployed at the same site (the network device 203 is taken as an example in FIG. 6b). Exemplarily, in FIG. 6b, the network device 203 can work in both the LTE system and the NR system, that is, the network device 203 can cover and form LTE cell connections and NR cell connections at the same time. The terminal device 101 can access the LTE cell and the NR cell at the same time.

The above-mentioned scenario is an example of a dual-connection scenario. Of course, this is just an example. There may be other situations in the dual-connection scenario, which will not be repeated here. In addition to the dual connection scenario, the terminal device in the embodiment of the present application may also support more than two connection scenarios. For example, in the above example, the terminal device 101 can also simultaneously access a cell formed by the coverage of three or more network devices. For example, taking three network devices as an example, the three network devices include a master network device and Two secondary network devices, the terminal device can simultaneously access the one primary network device and the two secondary network devices, the one primary network device and the two secondary network devices can be deployed on one or more network devices, for example, can They are respectively deployed on three network devices, or partly on one network device, or deployed on two network devices. Referring to FIG. 6c, where the primary network device is deployed on network device 210, one of the two secondary network devices is deployed on network device 211, and the other secondary network device is deployed on network device 212. This application The embodiment does not limit this.

The above describes the multi-connection scenario from the perspective of different network devices. Similarly, in another embodiment of the present application, multi-connection may also mean that a terminal device accesses two or more cells at the same time, or, A terminal device simultaneously accesses multiple carriers under the same network device, or multiple carriers under the same cell. For example, the multi-connection scenario may also include that the terminal device simultaneously accesses at least two cells covered by the same network device or different network devices, and the at least two cells may be single-carrier connections or multi-carrier connections. Or, the terminal device accesses a cell, which is a multi-carrier connection. For example, the single-carrier bandwidth of each single cell under LTE is 1.6M. If the total bandwidth of each LTE single cell is 10M, each LTE A single cell requires 6 carriers. When a terminal device simultaneously accesses 2 to 6 carriers of the single LTE cell, it can also be called multi-connection. The foregoing scenario in which the terminal device supports access to multiple carriers may also be referred to as carrier aggregation (carrier aggregation, CA). It should be understood that the terminal device capable of working in a multi-connection scenario may be a frequency band combination (band combination, BC) that supports DC, or a frequency band combination that supports carrier aggregation.

Considering that the UE may be under the coverage of two network devices at the same time, the primary network device may add a secondary network device for the UE so as to improve the throughput of the UE.

In a possible scenario, the primary network device may determine the secondary network device to be added by the UE according to the channel quality of the adjacent cell frequency measured by the UE.

After the UE accesses the main network device, it needs to report the UE capability to the main network device and the core network. The UE capability is reported through a special UE capability message (UECapabilityInformation), and the UE capability message may include the capability of the UE in multiple radio access technologies (Radio Access Technology, RAT).

For example, the main network device is an E-UTRA network device, and the E-UTRA (LTE) network device parses eutra capability information, that is, the EUTRA container (EUTRA container) or EUTRA capability information (UE-EUTRA-Capability) of the terminal device. -UTRA (LTE) network equipment cannot resolve NR container (NR container) or NR capability information (UE-NR-Capability) or NR capability of terminal equipment. In the process of adding or updating the secondary cell, if it is determined that the secondary network device is an NR network device, the E-UTRA (LTE) network device can only use the eutra capability information in the EUTRA container to include the UE in the EN-DC dual connection Access the NR frequency band (band) supported by the technology, determine an NR network device as a secondary network device, and initiate a request to add a secondary network device to the NR network device, or initiate a request to change a secondary network device. However, since the primary network device is a secondary network device determined according to the NR frequency band supported by the UE, the bandwidth supported by the secondary network device may not match the NR bandwidth supported by the UE, resulting in the UE being unable to successfully add the secondary network device.

For another example, the main network device is an NR network device, and the NR network device needs to analyze the capability information of NR, that is, the NR capability information (UE-NR-Capability) of the NR container (NR container) or the terminal device. In the NR capability information, It may include the E-UTRA (LTE) frequency band (band) supported by the UE under the EN-DC dual connectivity access technology. NR network devices cannot parse E-UTRA containers or E-UTRA capabilities. In the process of adding or updating the secondary cell, if the secondary network device is determined to be an E-UTRA (LTE) network device, the NR network device can only support the UE under the EN-DC dual connectivity access technology according to the NR container. The E-UTRA frequency band (band) determines the secondary network equipment. However, since the NR network device is a secondary network device determined according to the E-UTRA frequency band supported by the UE, the bandwidth supported by the secondary network device may not match the E-UTRA bandwidth supported by the UE, resulting in the UE being unable to successfully add or change the secondary network device. Network equipment.

To sum up, the main network device can only obtain the frequency band supported by the UE of the different system by analyzing the container or capability of the same system, but cannot analyze the container or capability of the different system, resulting in the inability to determine the bandwidth supported by the UE on the frequency band. Therefore, when the primary network device determines the secondary network device to be added by the UE according to the band information supported by the UE of the different system, it may occur that the secondary network device does not match the bandwidth supported by the UE, thus rejecting the addition of the secondary network device of the UE, resulting in This increases the failure probability of adding auxiliary network equipment, and at the same time brings greater delay in adding auxiliary network equipment and greater signaling overhead.

Example three

Based on the foregoing problems, an embodiment of the present application provides a communication method. The method can be applied to the system architecture shown in Figure 1 and the system shown in any of the scenarios in Figures 6a-6c, as shown in Figure 7, the method can include the following steps:

Step 701: The terminal device generates first capability information according to the capabilities supported by itself.

Wherein, the first capability information is used to indicate the capability of the first wireless access technology supported by the terminal device, and the first capability information further includes: frequency band information of the second wireless access technology supported by the terminal device The frequency band information includes: at least one frequency band corresponding to the second wireless access technology supported by the terminal device, and bandwidth information on each frequency band in the at least one frequency band, and the first wireless access technology and The second radio access technology is a different radio access technology.

Optionally, the terminal device may also receive a UE capability request message sent by the network device before generating the first capability information. Optionally, the UE capability request message may also include first indication information. For details, refer to step 301. Here No longer.

For the scenario of adding a secondary network device or updating a secondary network device, the terminal device may generate eutra capability information, nr capability information and eutra-nr capability information.

Taking the first radio access technology as E-UTRA and the second radio access technology as E-UTRA-NR radio access technology as an example. In a possible implementation manner, the first capability information may be eutra capability information carried in the EUTRA container.

In another possible implementation manner, the first capability information may not be carried in the E-UTRA container, for example, the first capability information may be carried in the MR-DC container, and the E-UTRA network device may add or add a secondary network device. When the secondary network device is changed, the MR-DC container is parsed to obtain the first capability information.

In some embodiments, the first capability information may further include: the NR band supported by the UE under EN-DC dual connectivity, and the bandwidth supported by the UE on the NR band. So that the network equipment supporting the E-UTRA radio access technology can obtain the bandwidth on the NR band supported by the E-UTRA-NR radio access technology supported by the UE by parsing the E-UTRA container, and improve the UE to add or change the secondary network equipment , the success rate of switching to EN-DC dual connectivity.

Considering that the nr capability information itself includes the NR band supported by the UE under EN-DC dual connectivity and the bandwidth supported by the UE on the NR band, when the terminal device determines the first capability information, the UE can use the nr capability information in The bandwidth supported by the UE on the NR band and/or the bandwidth supported by the UE on the NR band in the eutra-nr capability information determines the value of the bandwidth supported by the UE on the NR band in the first capability information.

Taking the first radio access technology as NR and the second radio access technology as NR-E-UTRA radio access technology as an example.

In this case, in a possible implementation manner, the first capability information may be nr capability information carried in the NR container.

In another possible implementation manner, the first capability information may not be carried in the NR container, for example, the first capability information may be carried in the MR-DC container, and the NR network device may add the secondary network device or the secondary network device When changing, the MR-DC container is parsed to obtain the first capability information.

In other embodiments, the UE capability information may further include: third capability information, for example, the third capability information may include: the E-UTRA band supported by the UE under EN-DC dual connectivity, and the E-UTRA band bandwidth supported by the UE. The network equipment supporting NR radio access technology can obtain the E-UTRA band supported by the UE supported by the E-UTRA-NR radio access technology and the bandwidth on the E-UTRA band by parsing the E-UTRA container, thereby improving The UE adds a secondary network device and switches to the success rate of EN-DC dual connectivity.

Considering that the eutra capability information itself includes the EUTRA band supported by the UE under EN-DC dual connectivity and the bandwidth supported by the UE on the EUTRA band, when the terminal device determines the first capability information, the UE can use the eutra capability The bandwidth supported by the UE on the EUTRA band in the information and/or the bandwidth supported by the UE on the EUTRA band in the eutra-nr capability information, determine the value of the bandwidth supported by the UE on the EUTRA band in the first capability information.

Optionally, the UE capability information may include: first capability information and second capability information, where the second capability information is used to indicate capability information of the second radio access technology supported by the UE. The second capability information includes: at least one frequency band corresponding to the second radio access technology supported by the terminal device, and bandwidth information on each frequency band in the at least one frequency band. The second capability information may be carried in the container of the second radio access technology and sent to the network device. It should be noted that, for the first capability information, reference may be made to the manner of generating the first capability information in step 301, which will not be repeated here.

Step 702: The terminal device sends the first capability information to the network device.

Correspondingly, the network device receives the first capability information sent by the terminal device.

Specifically, for the manner in which the terminal device sends the first capability information to the network device, reference may be made to step 302, which will not be repeated here.

Step 703: The network device determines at least one frequency band information of the second radio access technology supported by the terminal device according to the first capability information.

Optionally, step 704: Send a secondary cell addition request or a secondary cell change request to the target network device according to the frequency band information.

For the scenario of adding a secondary cell or changing a secondary cell, the network device that receives the first capability information is the network device, and the network device determines the target network device of the UE (in this case, it may be the target secondary network device) according to the first capability information. Furthermore, after determining the target secondary network device of the terminal device, the network device may send a secondary cell addition request or a secondary cell change request to the target network device.

Referring to FIG. 8 , it is a schematic flowchart corresponding to a method for adding a secondary cell provided in an embodiment of the present application. The method may include the following steps:

Step 801: the network device sends a UE capability request message to the terminal device.

Correspondingly, the terminal device receives the UE capability message sent by the network device.

Step 802: The terminal device generates first capability information according to the capabilities supported by itself.

For details, refer to step 701, which will not be repeated here.

Step 803: the terminal device sends the first capability information to the network device, and correspondingly, the network device receives the first capability information sent by the terminal device.

For details, refer to step 702, which will not be repeated here.

Step 804: the terminal device sends a measurement report to the network device, and correspondingly, the network device receives the measurement report sent by the terminal device.

For details, refer to step 404, which will not be repeated here.

Step 805: The source network device determines the target secondary network device of the terminal device according to the first capability information and the measurement report.

In step 805, the network device may determine a candidate target secondary network device for the terminal device according to the measurement report.

Wherein, the measurement report may include a measurement value of at least one frequency point of a cell of the same system, and may also include a measurement value of at least one frequency point of a cell of a different system. Wherein, the measurement value may be RSRP, RSRQ, RS-SINR, etc., which are not limited in this application.

For example, when the network device determines that the throughput of the serving cell of the terminal device is less than a third preset threshold, and the measured values of other cells of different systems supported by the terminal device are greater than a fourth preset threshold, it may trigger The secondary cell is added to improve the throughput of data transmission of the terminal equipment. Of course, the scenario of adding the secondary cell can also be triggered in other ways.

After determining to trigger the adding of the secondary cell, the network device may determine the candidate target secondary cell according to the measurement value of at least one frequency point of a cell of a different system in the measurement report, and then determine the candidate target secondary network device corresponding to the candidate target secondary cell .

The network device may determine the measurement values of other cells of the second radio access technology supported by the terminal device according to the measurement report of the terminal device. Wherein, other cells may be neighboring cells of the terminal device. Afterwards, candidate target secondary network devices may be determined according to the measurement values of other cells. For example, taking target secondary network devices corresponding to other cells whose measurement values of other cells of the second radio access technology supported by the terminal device are greater than a second preset threshold as candidate target secondary network devices to be added, in the candidate target secondary network device When there are multiple network devices, the cell with the best measured value, that is, the cell with the best channel quality may be prioritized as the candidate target secondary network device for this addition.

In some embodiments, after the network device determines the candidate target secondary network device according to the measurement report, it may determine whether there is a target secondary network device that satisfies the condition for adding a secondary cell among the candidate target secondary network devices according to the first capability information reported by the terminal device. If there is a device, go to step 806.

For example, the condition for adding the secondary cell may include: the terminal device can access the secondary target network device, and the terminal device meets the bandwidth requirement for working in the target secondary cell under the target secondary network device.

In a possible implementation manner, the handover condition may include: the frequency band supported by the UE matches the frequency band of the target secondary network device, and the bandwidth supported by the UE matches the bandwidth of the target secondary network device. Wherein, matching the bandwidth supported by the UE with the bandwidth of the target secondary network device may include: the channel bandwidth of the first frequency supported by the terminal device is less than or equal to the carrier bandwidth of the first frequency supported by the target network device, and A bandwidth greater than or equal to the initial bandwidth part of the first frequency point supported by the target network device.

Or, the channel bandwidth of the frequency band where the first frequency supported by the terminal device is less than or equal to the carrier bandwidth of the frequency band where the first frequency supported by the target secondary network device is greater than or equal to the target secondary network The bandwidth of the initial bandwidth part of the frequency band where the first frequency point supported by the device is located.

In a possible implementation manner, the network device may obtain the bandwidth of the frequency band supported by the candidate target secondary network device according to the frequency band to which the frequency point of the candidate target secondary network device determined in the measurement report belongs. Furthermore, according to the frequency band to which the frequency point of the candidate target secondary network device belongs and the bandwidth information supported by the candidate target secondary network device in the frequency band, compare it with the frequency band information of the terminal device to determine whether the candidate target secondary network device satisfies the handover condition.

For example, it is determined that the carrier bandwidth on the first frequency band supported by the candidate target secondary network device is greater than or equal to the channel bandwidth of the frequency band where the first frequency supported by the terminal device is located, and the first frequency supported by the candidate target network device is When the initial bandwidth of the frequency band where the point is located is less than or equal to the channel bandwidth of the frequency band where the first frequency point supported by the terminal device is located, the candidate target secondary network device may be used as the target secondary network device.

When the candidate target secondary network device does not meet the conditions for adding a secondary cell, a candidate target secondary network device can be reselected, for example, a cell with better channel quality is selected as a candidate target secondary network device After the secondary network device satisfies the switching condition, the candidate target secondary network device is used as the target secondary network device.

Step 806: the network device sends a request message for adding a secondary cell to the target network device, and correspondingly, the target network device receives the request message for adding a secondary cell sent by the network device.

Step 807: The target network device sends a confirmation message for adding a secondary cell to the network device, and correspondingly, the network device receives the confirmation message for adding a secondary cell sent by the target network device.

The target network device confirms that its own bandwidth supports terminal device access, and then sends a secondary cell addition confirmation message to the network device. In addition, in a possible scenario, when the target network device does not support terminal device access, the target network device sends a secondary cell addition rejection message to the network device.

Step 808: the network device sends a command to add a secondary cell to the terminal device, and correspondingly, the terminal device receives the command to add a secondary cell sent by the network device.

Through the above method, the network device can obtain the bandwidth capability on the band of the different system supported by the UE under the EN-DC dual connectivity by parsing its corresponding container, which helps to improve the success rate of the network device adding the secondary cell.

Referring to FIG. 9 , it is a schematic flowchart corresponding to a method for changing a secondary cell provided in an embodiment of the present application. The method may include the following steps:

Step 901: the network device sends a UE capability request message to the terminal device, and correspondingly, the terminal device receives the UE capability message sent by the network device.

Step 902: The terminal device generates first capability information according to the capabilities supported by itself.

For details, refer to step 701, which will not be repeated here.

Step 903: the terminal device sends the first capability information to the network device, and correspondingly, the network device receives the first capability information sent by the terminal device.

For details, refer to step 702, which will not be repeated here.

Step 904: the terminal device sends a measurement report to the network device, and correspondingly, the network device receives the measurement report sent by the terminal device.

For details, refer to step 404, which will not be repeated here.

Step 905: The network device determines a target secondary network device of the terminal device according to the first capability information and the measurement report.

In step 905, the network device can determine according to the measurement report that the signal quality of the secondary network device currently accessed by the terminal device is not good enough to meet the needs of current transmission. At this time, the network device can determine the signal quality of the terminal device according to the measurement report. Candidate target secondary network equipment, so that the secondary network equipment can be changed later.

For example, when the network device determines that the measured value of the secondary cell of the terminal device is less than a fifth preset threshold, and the measured value of other cells of the second radio access technology supported by the terminal device is greater than a sixth preset threshold , the change of the secondary cell may be triggered to improve the data transmission performance of the terminal device. Of course, the scenario of secondary cell change may also be triggered in other ways, which is not limited in this application.

After determining the triggering of the secondary cell change scenario, the network device may determine the candidate target secondary cell according to the measurement value of at least one frequency point of a cell of a different system in the measurement report, and then determine the candidate target secondary network device corresponding to the candidate target secondary cell .

In some embodiments, after the network device determines the candidate target secondary network device according to the measurement report, it may determine whether there is a target secondary network device that meets the secondary cell change condition among the candidate target secondary network devices according to the first capability information reported by the terminal device. If there is a device, go to step 906.

For example, the handover condition may include: the terminal device can access the secondary target network device, and the terminal device can work in the target secondary network device's bandwidth requirement.

In a possible implementation manner, the secondary cell change condition may include: the frequency band supported by the UE matches the frequency band of the target secondary network device, and the bandwidth supported by the UE matches the bandwidth of the target secondary network device. Wherein, matching the bandwidth supported by the UE with the bandwidth of the target secondary network device may include: the channel bandwidth of the frequency band where the first frequency point supported by the terminal device is less than or equal to the channel bandwidth of the frequency band where the first frequency point supported by the target secondary network device is located. The carrier bandwidth on the frequency band is greater than or equal to the bandwidth of the initial bandwidth part of the frequency band where the first frequency point supported by the target secondary network device is located.

When the candidate target secondary network device does not meet the secondary cell change conditions, the candidate target secondary network device can be reselected, for example, a cell with better channel quality is selected as the candidate target secondary network device for this secondary cell change, and the candidate target secondary network device is determined. After the secondary network device satisfies the switching condition, the candidate target secondary network device is used as the target secondary network device.

Step 906: the network device sends a secondary cell change request to the target network device, and correspondingly, the target network device receives the secondary cell change request sent by the network device.

Alternatively, the network device sends a secondary node change request to the target network device, and correspondingly, the target network device receives the secondary node change request sent by the network device.

Step 907: The target network device sends a secondary cell change confirmation message to the network device, and correspondingly, the network device receives the secondary cell change confirmation message sent by the target network device.

The target network device confirms that its own bandwidth supports terminal device access, and then sends a secondary cell change confirmation message to the network device. In addition, in a possible scenario, when the target network device does not support terminal device access, the target network device sends a secondary cell change rejection message to the network device.

Step 908: the network device sends a secondary cell change command to the terminal device, and correspondingly, the terminal device receives the secondary cell change command sent by the network device.

Alternatively, the network device sends a secondary node change command to the target network device, and correspondingly, the target network device receives the secondary node change command sent by the network device.

Example four

Referring to FIG. 10 , it is a schematic flowchart corresponding to a communication method provided in the embodiment of the present application. The method can be applied to the system shown in Figure 1 and any of the scenarios in Figure 6a-6c, as shown in Figure 10, the method can include the following steps:

Step 1001: the network device sends a first configuration message to the terminal device.

Wherein, the first configuration message is used to configure a frequency point for measuring the second wireless access technology, the first configuration message includes: frequency point information of the second wireless access technology, and the network device supports the second wireless access technology A wireless access technology network device.

Optionally, the first configuration message may also carry second indication information, where the second indication information is used to instruct the terminal device to report the bandwidth information on the frequency point of the second wireless access technology supported by the terminal device .

For a specific implementation manner, reference may be made to step 501, which will not be repeated here.

Step 1002: the terminal device determines first measurement information.

In a possible implementation manner, the first measurement information may be carried in a measurement report or UE assistance information. For details, reference may be made to step 502, which will not be repeated here.

In a dual connectivity scenario, the first measurement information may include: the bandwidth supported by the UE on frequency points of different systems under EN-DC dual connectivity. Wherein, the frequency point of the different system may be the frequency point of the different system in the measurement report of the UE.

Before the UE requests to use dual connectivity to increase throughput, the UE can enable inter-system measurement, for example, to measure the quality of NR network frequency points under the E-UTRA network. When the measurement result satisfies the corresponding measurement reporting trigger event, the UE can report a measurement report (MeasurementReport) to the E-UTRA network device, and the measurement report includes the measurement result of the different-system cell/different-system frequency point. Correspondingly, the E-UTRA network device selects an appropriate cell under the network device of the different system as the secondary cell added to the UE according to the measurement result.

At this time, while reporting the measurement report, the UE also reports the bandwidth supported by the UE on different system frequency points, wherein the frequency point belongs to one band. That is, the bandwidth supported by the UE in the first measurement information is the frequency point with better channel quality determined by the UE after measuring the different system cells/different system frequency points. Therefore, when the network device selects the target cell according to the first measurement information, It can be added to secondary cells with good channel quality more easily to improve the performance of dual connectivity.

For a specific manner in which the terminal device generates the first measurement information, reference may be made to the manner in step 502, which will not be repeated here.

Step 1003: the terminal device sends the first measurement information to the network device.

For the specific sending manner, reference may be made to step 503, which will not be repeated here.

Step 1004: The network device determines first frequency point information according to the first measurement information.

Through the above method, the network device can obtain the bandwidth capability of the frequency point of the different system supported by the UE under the EN-DC dual connection by obtaining the first measurement information reported by the terminal device, effectively reducing the probability of failure to add the secondary network device, and reducing Secondary network equipment adds delay and signaling overhead. And the implementation complexity of the network device is not increased. In addition, compared with the solution in Example 3, the solution in Example 4 helps to reduce signaling overhead.

Optionally, after determining the target secondary network device of the UE, the network device may send a secondary cell addition request or secondary node addition request, secondary cell change request, or secondary node change request to the target secondary network device. Steps 1005 to 1008 are used as examples below to illustrate the scenario of adding a secondary cell.

Step 1005: the network device determines the target secondary network device of the UE according to the first frequency point information and the measurement report.

It should be noted that the manner in which the network device determines the target secondary network device of the UE according to the first frequency point information and the measurement report may refer to the manner in which the network device determines the target network device of the UE according to the frequency band information and the measurement report in FIG. I won't repeat them here.

Step 1006: the network device sends a request for adding a secondary cell or a request for adding a secondary node to the target secondary network device.

The network device sends a request message for adding a secondary cell to the target network device, and correspondingly, the target network device receives the request message for adding a secondary cell sent by the network device.

Step 1007: The target network device sends a confirmation message for adding a secondary cell to the network device, and correspondingly, the network device receives the confirmation message for adding a secondary cell sent by the target network device.

The target secondary network device confirms that its own bandwidth supports terminal device access, and then sends a secondary cell addition confirmation message to the network device. In addition, in a possible scenario, when the target secondary network device does not support terminal device access, the target secondary network device sends a secondary cell addition rejection message to the network device.

Step 1008: the network device sends a command to add a secondary cell to the terminal device, and correspondingly, the terminal device receives the command to add a secondary cell sent by the network device.

Based on the foregoing embodiments, the present application further provides a communication method, including the following Embodiment 1 and Embodiment 2.

Embodiment one

1. A communication method applied to a terminal device, comprising:

Receive a first configuration message from a network device; the first configuration message is used to configure a frequency point for measuring a second wireless access technology, and the first configuration message includes: frequency point information of the second wireless access technology, the The above network equipment is a network equipment supporting the first wireless access technology;

Sending first measurement information to a network device, where the first measurement information is used to indicate first frequency point information, where the first frequency point information includes the first frequency point and the first frequency point supported by the terminal device The bandwidth information on the point, the first frequency point information is the frequency point information that satisfies a preset condition in the frequency point information of the second wireless access technology.

2. The method according to 1, wherein the frequency point information satisfying a preset condition in the frequency point information of the second radio access technology is: a frequency point whose reference signal measurement value is greater than a preset value.

3. The method according to 1 or 2, the first configuration message further includes second indication information, and the second indication information is used to instruct the terminal device to report the second radio access technology supported by the terminal device The bandwidth information on the frequency point.

4. The method according to any one of 1-3, wherein the bandwidth information on the first frequency point is carried in any of the following messages: measurement report, UE assistance information.

5. The method according to any one of 2-4, the bandwidth information on the first frequency point includes at least one of the following:

Uplink bandwidth information on the first frequency point;

Downlink bandwidth information on the first frequency point;

6. The method according to any one of 2-6, wherein the first measurement information includes: a second indication field;

Embodiment two

1. A communication method applied to network equipment, comprising:

Sending a first configuration message to the terminal device; the first configuration message is used to configure a frequency point for measuring the second wireless access technology, and the first configuration message includes: frequency point information of the second wireless access technology, The network device is a network device supporting the first wireless access technology;

Receive first measurement information from a terminal device, where the first measurement information is used to indicate first frequency point information, where the first frequency point information includes the first frequency point and the first frequency point supported by the terminal device. Bandwidth information on frequency points, where the first frequency point information is frequency point information that satisfies a preset condition in the frequency point information of the second wireless access technology.

3. The method according to 1 or 2, the configuration message further includes: second indication information, the second indication information is used to instruct the terminal device to report the second wireless access supported by the terminal device Bandwidth information on the frequency point of the technology.

Uplink bandwidth information on the first frequency point;

Downlink bandwidth information on the first frequency point;

7. the method as described in any one of 1-6, described method also comprises:

Sending a request message to the target network device according to the first frequency point information;

Wherein, the request message is used to request the terminal device to establish a communication connection with the target network device, and the channel bandwidth of the first frequency point supported by the terminal device is less than or equal to the channel bandwidth supported by the target network device. The carrier bandwidth on the first frequency point is greater than or equal to the bandwidth of the initial bandwidth part of the first frequency point supported by the target network device.

8. The method according to 7, the request message is any one of the following: a handover request message, a secondary node addition request message, or a secondary node change request message.

9. The method according to 7 or 8, wherein the reference signal measurement value of the serving cell of the terminal device is less than the first preset threshold, and the reference signal measurement value of other cells of the second radio access technology supported by the terminal device The value is greater than a second preset threshold, the first preset threshold is less than or equal to the second preset threshold, and the cell of the target network device is one of the other cells.

10. The method according to 7 or 8, wherein the throughput of the serving cell of the terminal device is less than the third preset threshold, and the measured value of other cells of the second radio access technology supported by the terminal device is greater than the fourth A preset threshold, the cell of the target network device being one of the other cells;

Or, the measured value of the secondary cell of the terminal device is less than a fifth preset threshold, and the measured value of other cells of the second radio access technology supported by the terminal device is greater than a sixth preset threshold, and the fifth preset It is assumed that the threshold is less than or equal to the sixth preset threshold, and the cell of the target network device is one of the other cells.

In the above-mentioned embodiments provided in the present application, the methods provided in the embodiments of the present application are introduced from the perspective of interaction between various devices. In order to realize the various functions in the method provided by the above-mentioned embodiments of the present application, the network device or the terminal device may include a hardware structure and/or a software module, and realize the above-mentioned functions in the form of a hardware structure, a software module, or a hardware structure plus a software module . Whether one of the above-mentioned functions is executed in the form of a hardware structure, a software module, or a hardware structure plus a software module depends on the specific application and design constraints of the technical solution.

The division of modules in the embodiment of the present application is schematic, and is only a logical function division, and there may be other division methods in actual implementation. In addition, each functional module in each embodiment of the present application may be integrated into one processor, or physically exist separately, or two or more modules may be integrated into one module. The above-mentioned integrated modules can be implemented in the form of hardware or in the form of software function modules.

As shown in FIG. 11 , the present application provides a communication device 1100 . In some embodiments, the communication apparatus 1100 may be a terminal device, or a component in the terminal device, such as a chip. The communication device 1100 may include a processing module 1110 and a sending module 1120 . Optionally, a receiving module 1130 may also be included.

In some embodiments, the processing module 1110 is configured to determine first capability information, where the first capability information is used to indicate the capability of the first radio access technology supported by the terminal device, and the first capability information further includes : frequency band information of the second radio access technology supported by the terminal device; the frequency band information includes: at least one frequency band corresponding to the second radio access technology supported by the terminal device, and each of the at least one frequency band Bandwidth information on frequency bands, the first wireless access technology and the second wireless access technology are different wireless access technologies;

A sending module 1120, configured to send the first capability information to the network device.

In a possible implementation manner, the receiving module 1130 is configured to receive first indication information from the network device. Wherein, the first indication information is used to indicate bandwidth information on each frequency band in the at least one frequency band.

Uplink bandwidth information on each frequency band in the at least one frequency band;

Downlink bandwidth information on each frequency band in the at least one frequency band;

Uplink bandwidth information corresponding to each subcarrier spacing in the at least one subcarrier spacing on each frequency band in the at least one frequency band;

Downlink bandwidth information corresponding to each subcarrier spacing in the at least one subcarrier spacing on each frequency band in the at least one frequency band.

In a possible implementation manner, the first capability information includes: a first indication field;

In a possible implementation manner, the sending module 1120 is configured to send UE capability information to the network device, where the UE capability information includes the first capability information and second capability information, and the second capability information is used to indicate The capability of the second radio access technology supported by the terminal device, where the second capability information includes: at least one frequency band corresponding to the second radio access technology supported by the terminal device, and each frequency band in the at least one frequency band Bandwidth information on frequency bands.

In a possible implementation manner, the frequency band information is used to send a request message to the target network device; wherein the request message is used to request the terminal device to establish a communication connection with the target network device; the target network device supports The bandwidth meets the requirement for the terminal device to access the network of the target network device by using the second wireless access technology.

In some other embodiments, the receiving module 1130 is configured to receive a first configuration message from a network device; the first configuration message is used to configure a frequency point for measuring the second wireless access technology, and the first configuration message includes : frequency point information of the second wireless access technology, the network device is a network device supporting the first wireless access technology;

A sending module 1120, configured to send first measurement information to a network device, where the first measurement information is used to indicate first frequency point information, and the first frequency point information includes the first frequency point and the terminal device supported The bandwidth information on the first frequency point, where the first frequency point information is the frequency point information that satisfies a preset condition in the frequency point information of the second wireless access technology.

In a possible implementation manner, the frequency point information that satisfies a preset condition in the frequency point information of the second radio access technology is: a frequency point whose measured value is greater than a preset value.

In a possible implementation manner, the receiving module 1130 is configured to receive second indication information from the network device, where the second indication information is used to instruct the terminal device to report the second wireless access supported by the terminal device Bandwidth information on the frequency point of the technology.

In a possible implementation manner, the bandwidth information on the first frequency point is carried in any of the following messages: measurement report, UE assistance information.

In a possible implementation manner, the bandwidth information on the first frequency point includes at least one of the following:

Uplink bandwidth information on the first frequency point;

Downlink bandwidth information on the first frequency point;

In a possible implementation manner, the first measurement information includes: a second indication field;

In a possible implementation manner, the first frequency point information is used to send a request message to the target network device; wherein the request message is used to request the terminal device to establish a communication connection with the target network device; the target The bandwidth supported by the network device meets the requirement for the terminal device to access the network of the target network device by using the second wireless access technology.

As shown in FIG. 12 , the present application provides a communication device 1200 . In some embodiments, the communication apparatus 1200 may be a network device, or a component in the network device, such as a chip. The communication device 1200 may include a processing module 1210 and a receiving module 1220 . Optionally, a sending module 1230 may also be included.

In some embodiments, the receiving module 1220 is configured to receive first capability information from the terminal device; the first capability information is used to indicate the capability of the first radio access technology supported by the terminal device, and the first The capability information also includes: frequency band information of the second wireless access technology supported by the terminal device; the frequency band information includes: at least one frequency band corresponding to the second wireless access technology supported by the terminal device, and the at least one Bandwidth information on each of the frequency bands, the first radio access technology and the second radio access technology are different radio access technologies;

The processing module 1210 is configured to determine, according to the first capability information, at least one frequency band corresponding to the second wireless access technology supported by the terminal device, and bandwidth information on each frequency band in the at least one frequency band.

In a possible implementation manner, the sending module 1230 is configured to send first indication information to the terminal device, where the first indication information is used to indicate bandwidth information on each frequency band in the at least one frequency band.

In a possible implementation manner, the receiving module 1220 is configured to receive UE capability information from a terminal device, where the UE capability information includes the first capability information and second capability information, and the second capability information is used to indicate the The capability of the second radio access technology supported by the terminal device, the second capability information includes: at least one frequency band corresponding to the second radio access technology supported by the terminal device, and each of the at least one frequency band Bandwidth information on the frequency band.

In a possible implementation manner, the processing module 1210 is configured to send a request message to the target network device according to the frequency band information; wherein the request message is used to request the terminal device to establish a communication connection with the target network device; The bandwidth supported by the target network device meets the requirement for the terminal device to access the network of the target network device by using the second wireless access technology.

A possible implementation manner, the request message is any of the following: a handover request message, a secondary node addition request message, or a secondary node change request message.

In a possible implementation manner, the measured value of the serving cell of the terminal device is smaller than a first preset threshold, and the measured value of other cells of the second radio access technology supported by the terminal device is larger than the second preset threshold.

In a possible implementation manner, the throughput of the serving cell of the terminal device is less than a third preset threshold, and the measured values of other cells of the second radio access technology supported by the terminal device are greater than a fourth preset threshold.

In a possible implementation manner, the measured value of the secondary cell of the terminal device is smaller than a fifth preset threshold, and the measured value of other cells of the second radio access technology supported by the terminal device is larger than a sixth preset threshold.

In a possible implementation manner, the channel bandwidth of the first frequency band supported by the terminal device is less than or equal to the carrier bandwidth of the first frequency band supported by the target network device, and greater than or equal to the first frequency band supported by the target network device. A bandwidth of an initial bandwidth part of a frequency band, where the first frequency band is one of at least one frequency band of the second radio access technology supported by the terminal device.

In some other embodiments, the sending module 1230 is configured to send a first configuration message to the terminal device; the first configuration message is used to configure a frequency point for measuring the second wireless access technology, and the first configuration message includes: The frequency point information of the second wireless access technology, the network device is a network device supporting the first wireless access technology.

The receiving module 1220 is configured to receive first measurement information from a terminal device, where the first measurement information is used to indicate first frequency point information, and the first frequency point information includes the first frequency point and the terminal device Supported bandwidth information on the first frequency point, where the first frequency point information is frequency point information that satisfies a preset condition in the frequency point information of the second wireless access technology.

In a possible implementation manner, the sending module 1230 is configured to send second indication information to the terminal device, where the second indication information is used to instruct the terminal device to report the second radio access technology supported by the terminal device The bandwidth information on the frequency point.

Uplink bandwidth information on the first frequency point;

Downlink bandwidth information on the first frequency point;

In a possible implementation manner, the processing module 1210 is configured to send a request message to the target network device according to the first frequency point information; where the request message is used to request the terminal device to establish a connection with the target network device. Communication connection: the bandwidth supported by the target network device meets the requirement for the terminal device to access the network of the target network device by using the second wireless access technology.

In a possible implementation manner, the channel bandwidth of the first frequency point supported by the terminal device is less than or equal to the carrier bandwidth of the first frequency point supported by the target network device, and greater than or equal to the carrier bandwidth of the first frequency point supported by the target network device. The bandwidth of the initial bandwidth part of the first frequency point.

Optionally, the

above communication device

1100 or 1200 may further include a storage unit, which is used to store data or instructions (also referred to as codes or programs), and each of the above units may interact or be coupled with the storage unit to implement corresponding method or function. For example, the

processing module

1110 or 1210 may read data or instructions in the storage unit, so that the communication device implements the methods in the foregoing embodiments.

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

In one example, the units in any of the above devices may be one or more integrated circuits configured to implement the above method, for example: one or more specific integrated circuits (application specific integrated circuit, ASIC), or, one or Multiple microprocessors (digital signal processor, DSP), or, one or more field programmable gate arrays (field programmable gate array, FPGA), or a combination of at least two of these integrated circuit forms. For another example, when the units in the device can be implemented in the form of a processing element scheduler, the processing element can be a general-purpose processor, such as a central processing unit (central processing unit, CPU) or other processors that can call programs. For another example, these units can be integrated together and implemented in the form of a system-on-a-chip (SOC).

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

Referring to FIG. 13 , it is a schematic structural diagram of a communication device provided by an embodiment of the present application. The communication device is used to realize the operations of the network device or the terminal device in the above embodiments. As shown in FIG. 13 , taking the communication device as a terminal device as an example, the communication device includes: an antenna 1310 , a radio frequency device 1320 , and a signal processing part 1330 . The antenna 1310 is connected to the radio frequency device 1320 . In the downlink direction, the radio frequency device 1320 receives the information sent by the network equipment or other terminal equipment through the antenna 1310, and sends the information sent by the network equipment or other terminal equipment to the signal processing part 1330 for processing. In the uplink direction, the signal processing part 1330 processes the information of the terminal equipment and sends it to the radio frequency device 1320, and the radio frequency device 1320 processes the information of the terminal equipment and sends it to network equipment or other terminal equipment through the antenna 1310.

Taking the communication device as a network device as an example, the communication device includes: an antenna 1310 , a radio frequency device 1320 , and a signal processing part 1330 . The antenna 1310 is connected to the radio frequency device 1320 . In the uplink direction, the radio frequency device 1320 receives information sent by the first terminal or other terminal equipment through the antenna 1310, and sends the information sent by the first terminal or other terminal equipment to the signal processing part 1330 for processing. In the downlink direction, the signal processing part 1330 processes the information of the network equipment and sends it to the radio frequency device 1320, and the radio frequency device 1320 processes the information of the network equipment and sends it to the first terminal or other terminal equipment through the antenna 1310.

The signal processing part 1330 is used to realize the processing of each communication protocol layer of data. The signal processing part 1330 may be a subsystem of the communication device, and the communication device may also include other subsystems, such as a central processing subsystem, for processing the operating system and application layer of the communication device; another example, the peripheral subsystem The system is used to realize the connection with other devices. The signal processing part 1330 may be a separately provided chip. Optionally, the above devices may be located in the signal processing part 1330 .

Signal processing section 1330 may include one or more processing elements 1331 , including, for example, a master CPU and other integrated circuits, and interface circuitry 1333 . In addition, the signal processing section 1330 may further include a storage element 1332 . The storage element 1332 is used to store data and programs, and the program for performing the method executed by the communication device in the above methods may or may not be stored in the storage element 1332, for example, stored in a memory outside the signal processing part 1330 During use, the signal processing part 1330 loads the program into the cache for use. Interface circuitry 1333 is used to communicate with the device. The above means can be located in the signal processing part 1330, and the signal processing part 1330 can be realized by a chip, and the chip includes at least one processing element and an interface circuit, wherein the processing element is used to execute each step of any method performed by the above communication means, and the interface Circuits are used to communicate with other devices. In one implementation, the unit that implements each step in the above method can be implemented in the form of a processing element scheduler, for example, the device includes a processing element and a storage element, and the processing element calls the program stored in the storage element to execute the above method embodiment. A method performed by a communication device. The storage element may be a storage element on the same chip as the processing element, that is, an on-chip storage element.

In another implementation, the program for executing the method executed by the communication device in the above methods may be stored in a storage element on a different chip from the processing element, that is, an off-chip storage element. At this point, the processing element invokes or loads a program from the off-chip storage element to the on-chip storage element, so as to invoke and execute the method performed by the communication device (network device or terminal device) in the above method embodiments.

In yet another implementation, the unit of the communication device implementing each step in the above method may be configured as one or more processing elements, and these processing elements are arranged on the signal processing part 1330, where the processing elements may be integrated circuits, such as : One or more ASICs, or one or more DSPs, or one or more FPGAs, or a combination of these types of integrated circuits. These integrated circuits can be integrated together to form a chip.

The units for implementing each step in the above method can be integrated together and implemented in the form of a system-on-a-chip (SOC). The SOC chip is used to implement the above method. The chip may integrate at least one processing element and a storage element, and the processing element calls the stored program of the storage element to realize the method performed by the above communication device; or, the chip may integrate at least one integrated circuit for realizing the above communication The method executed by the device; or, the above implementation methods can be combined, the functions of some units are realized by calling programs from processing elements, and the functions of some units are realized by the form of integrated circuits.

It can be seen that the above device may include at least one processing element and an interface circuit, where at least one processing element is configured to execute any method performed by a communication device provided in the above method embodiments. The processing element can perform some or all of the steps performed by the communication device in the first way: that is, by calling the program stored in the storage element; or in the second way: that is, through the integrated logic circuit of the hardware in the processor element combined with instructions Part or all of the steps performed by the communication device may be performed in a manner; of course, some or all of the steps performed by the communication device may also be performed in combination with the first method and the second method.

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

It can be understood that the memory in the embodiments of the present application may be a volatile memory or a nonvolatile memory, or may include both volatile and nonvolatile memories. Among them, the non-volatile memory can be read-only memory (read-only memory, ROM), programmable read-only memory (programmable ROM, PROM), erasable programmable read-only memory (erasable PROM, EPROM), electrically programmable Erases programmable read-only memory (electrically EPROM, EEPROM) or flash memory. Volatile memory can be random access memory (RAM), which acts as external cache memory. By way of illustration and not limitation, many forms of RAM are available such as static random access memory (static RAM, SRAM), dynamic random access memory (dynamic RAM, DRAM), synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous connection dynamic random access memory (synchlink DRAM, SLDRAM ) and direct memory bus random access memory (direct rambus RAM, DR RAM). It should be noted that the memory of the systems and methods described herein is intended to include, but not be limited to, these and any other suitable types of memory.

The embodiment of the present application also provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a computer, the method described in any method embodiment corresponding to the network device or the terminal device in the foregoing embodiments is implemented.

An embodiment of the present application further provides a computer program product, which implements the method described in any method embodiment of the above-mentioned network device or terminal device when the computer program product is executed by a computer.

An embodiment of the present application further provides a communication system, where the communication system includes the network device or the terminal device in the foregoing embodiments.

The above-mentioned embodiments may be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using software, it may be implemented in whole or in part in the form of a computer program product. A computer program product consists of one or more computer programs. When the computer program is loaded and executed on the computer, the processes or functions according to the embodiments of the present application will be generated in whole or in part. The computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable device. The computer program can be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer program can be transmitted from a website site, computer, server or data center by wire ( Such as coaxial cable, optical fiber, digital subscriber line (digital subscriber line, DSL)) or wireless (such as infrared, wireless, microwave, etc.) to another website site, computer, server or data center. The computer-readable storage medium may be any available medium that can be accessed by a computer, or a data storage device such as a server, a data center, etc. integrated with one or more available media. Available media can be magnetic (e.g., floppy disk, hard disk, tape), optical (e.g., digital video disc (DVD)), or semiconductor (e.g., solid state disk (SSD) )Wait.

The embodiment of the present application further provides a processing apparatus, including a processor and an interface; the processor is configured to execute the method described in any method embodiment of the above-mentioned network device or terminal device.

It should be understood that the above-mentioned processing device may be a chip, and the processor may be implemented by hardware or by software. When implemented by hardware, the processor may be a logic circuit, an integrated circuit, etc.; when implemented by software, the processor It may be a general-purpose processor, which is implemented by reading software codes stored in the memory, and the memory may be integrated in the processor, or located outside the processor and exist independently.

The above is only the specific implementation of the present application, but the scope of protection of the embodiments of the present application is not limited thereto. Any person familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the embodiments of the present application. , should be covered within the scope of protection of the embodiments of the present application. Therefore, the protection scope of the embodiments of the present application should be determined by the protection scope of the claims.

Claims

A communication method, characterized in that it is applied to a terminal device, comprising:

Determining first capability information, where the first capability information is used to indicate the capability of the first wireless access technology supported by the terminal device, and the first capability information further includes: a second wireless access technology supported by the terminal device Technology frequency band information; the frequency band information includes: at least one frequency band corresponding to the second wireless access technology supported by the terminal device, and bandwidth information on each frequency band in the at least one frequency band, the first wireless access technology The access technology is a different radio access technology from the second radio access technology;

Send the first capability information to the network device.
The method according to claim 1, wherein the first capability information is carried in a container of the first wireless access technology or in capability information of the first wireless access technology of the terminal device.
The method according to claim 1 or 2, further comprising:

Receive first indication information from the network device, where the first indication information is used to instruct the terminal device to report bandwidth information on each frequency band in the at least one frequency band in the first capability information.
The method according to any one of claims 1-3, wherein the bandwidth information on each frequency band in the at least one frequency band is carried in a UE capability message.
The method according to any one of claims 1-4, wherein the bandwidth information on each frequency band in the at least one frequency band includes at least one of the following:

Uplink bandwidth information on each frequency band in the at least one frequency band;

Downlink bandwidth information on each frequency band in the at least one frequency band;

Bandwidth information corresponding to each subcarrier spacing in at least one subcarrier spacing on each frequency band in the at least one frequency band;

Uplink bandwidth information corresponding to each subcarrier spacing in at least one subcarrier spacing on each frequency band in the at least one frequency band;

Downlink bandwidth information corresponding to each subcarrier spacing in at least one subcarrier spacing on each frequency band in the at least one frequency band.
The method according to any one of claims 1-5, wherein the first capability information includes: a first indication field, and the first indication field is used to indicate each frequency band in the at least one frequency band at least one bandwidth information on ;

Alternatively, the first indication field includes at least one first indication subfield, and one first indication subfield in the at least one first indication subfield is used to indicate that each of the at least one frequency band supported by the terminal device Bandwidth information corresponding to a subcarrier spacing on the frequency band;

Alternatively, the first indication field includes at least one first indication subfield, and one first indication subfield in the at least one first indication subfield is used to indicate that each of the at least one frequency band supported by the terminal device Uplink bandwidth information or downlink bandwidth information corresponding to a subcarrier spacing on the frequency band;

Alternatively, the first indication field includes at least one of a first uplink indication field or a first downlink indication field, and the first uplink indication field is used to indicate uplink bandwidth information on each frequency band in the at least one frequency band ; The first downlink indication field is used to indicate downlink bandwidth information on each frequency band in the at least one frequency band.
The method according to any one of claims 1-6, wherein the sending the first capability information to the network device comprises:

sending UE capability information to the network device, where the UE capability information includes the first capability information and second capability information, and the second capability information is used to indicate the second radio access technology supported by the terminal device capability, the second capability information includes: at least one frequency band corresponding to the second radio access technology supported by the terminal device, and bandwidth information on each frequency band in the at least one frequency band.
A communication method, characterized in that it is applied to a network device, comprising:

Receive first capability information from the terminal device; the first capability information is used to indicate the capability of the first radio access technology supported by the terminal device, and the first capability information further includes: the first radio access technology supported by the terminal device Frequency band information of two radio access technologies; the frequency band information includes: at least one frequency band corresponding to the second radio access technology supported by the terminal device, and bandwidth information on each frequency band in the at least one frequency band, so The first wireless access technology and the second wireless access technology are different wireless access technologies;

According to the first capability information, at least one frequency band corresponding to the second radio access technology supported by the terminal device, and bandwidth information on each frequency band in the at least one frequency band are determined.
The method according to claim 8, wherein the first capability information is carried in a container of the first wireless access technology or in capability information of the first wireless access technology of the terminal device.
The method according to claim 8 or 9, wherein the method further comprises:

Sending first indication information to the terminal device, where the first indication information is used to instruct the terminal device to report bandwidth information on each frequency band in the at least one frequency band in the first capability information.
The method according to any one of claims 8-10, wherein the bandwidth information on each frequency band in the at least one frequency band is carried in a UE capability message.
The method according to any one of claims 8-11, wherein the bandwidth information on each frequency band in the at least one frequency band includes at least one of the following:

Uplink bandwidth information on each frequency band in the at least one frequency band;

Downlink bandwidth information on each frequency band in the at least one frequency band;

Bandwidth information corresponding to each subcarrier spacing in at least one subcarrier spacing on each frequency band in the at least one frequency band;

Uplink bandwidth information corresponding to each subcarrier spacing in at least one subcarrier spacing on each frequency band in the at least one frequency band;

Downlink bandwidth information corresponding to each subcarrier spacing in at least one subcarrier spacing on each frequency band in the at least one frequency band.
The method according to any one of claims 8-12, wherein the first capability information includes: a first indication field,

The first indication field is used to indicate at least one bandwidth information on each frequency band in the at least one frequency band;

Alternatively, the first indication field includes at least one first indication subfield, and one first indication subfield in the at least one first indication subfield is used to indicate that each of the at least one frequency band supported by the terminal device Bandwidth information corresponding to a subcarrier spacing on the frequency band;

Alternatively, the first indication field includes at least one first indication subfield, and one first indication subfield in the at least one first indication subfield is used to indicate that each of the at least one frequency band supported by the terminal device Uplink bandwidth information or downlink bandwidth information corresponding to a subcarrier spacing on the frequency band;

Alternatively, the first indication field includes at least one of a first uplink indication field or a first downlink indication field, and the first uplink indication field is used to indicate uplink bandwidth information on each frequency band in the at least one frequency band ; The first downlink indication field is used to indicate downlink bandwidth information on each frequency band in the at least one frequency band.
The method according to any one of claims 8-13, further comprising:

receiving UE capability information from the terminal device, where the UE capability information includes the first capability information and second capability information, and the second capability information is used to indicate the capability of the second radio access technology supported by the terminal device , the second capability information includes: at least one frequency band corresponding to the second radio access technology supported by the terminal device, and bandwidth information on each frequency band in the at least one frequency band.
The method according to any one of claims 8-14, wherein the method further comprises:

Sending a request message to the target network device according to the frequency band information;

Wherein, the request message is used to request the terminal device to establish a communication connection with the target network device, and the channel bandwidth of the first frequency band supported by the terminal device is less than or equal to that of the first frequency band supported by the target network device. The carrier bandwidth is greater than or equal to the bandwidth of the initial bandwidth part of the first frequency band supported by the target network device, and the first frequency band is one of at least one frequency band of the second radio access technology supported by the terminal device.
The method according to claim 15, wherein the request message is any one of the following: a handover request message, a secondary node addition request message, or a secondary node change request message.
The method according to claim 15 or 16, wherein the reference signal measurement value of the serving cell of the terminal device is smaller than a first preset threshold, and other cells of the second radio access technology supported by the terminal device The measured reference signal value of the reference signal is greater than a second preset threshold, the first preset threshold is less than or equal to the second preset threshold, and the cell corresponding to the target network device is one of the other cells.
The method according to claim 15 or 16, wherein the throughput of the serving cell of the terminal device is less than a third preset threshold, and the reference of other cells of the second radio access technology supported by the terminal device The signal measurement value is greater than a fourth preset threshold, and the cell corresponding to the target network device is one of the other cells;

Or, the reference signal measurement value of the secondary cell of the terminal device is less than the fifth preset threshold, and the reference signal measurement value of other cells of the second radio access technology supported by the terminal device is greater than the sixth preset threshold, so The fifth preset threshold is less than or equal to the sixth preset threshold, and the cell corresponding to the target network device is one of the other cells.
A communication method, characterized in that it is applied to a terminal device, comprising:

Receive a first configuration message from a network device; the first configuration message is used to configure a frequency point for measuring a second wireless access technology, and the first configuration message includes: frequency point information of the second wireless access technology, the The above network equipment is a network equipment supporting the first wireless access technology;

Sending first measurement information to a network device, where the first measurement information is used to indicate first frequency point information, where the first frequency point information includes the first frequency point and the first frequency point supported by the terminal device The bandwidth information on the point, the first frequency point information is the frequency point information that satisfies a preset condition in the frequency point information of the second wireless access technology.
A communication method, characterized in that it is applied to a network device, comprising:

Sending a first configuration message to the terminal device; the first configuration message is used to configure a frequency point for measuring the second wireless access technology, and the first configuration message includes: frequency point information of the second wireless access technology, The network device is a network device supporting the first wireless access technology;

Receive first measurement information from a terminal device, where the first measurement information is used to indicate first frequency point information, where the first frequency point information includes the first frequency point and the first frequency point supported by the terminal device. Bandwidth information on frequency points, where the first frequency point information is frequency point information that satisfies a preset condition in the frequency point information of the second wireless access technology.
A communication device, characterized in that it includes: a processor and a communication interface, the communication interface is used for the device to communicate, the processor is coupled with a memory, and the memory is used to store programs or instructions, when the When the program or instruction is executed by the processor, the device is made to execute the method according to any one of claims 1-7 or the method according to claim 19.
A communication device, characterized in that it includes: a processor and a communication interface, the communication interface is used for the device to communicate, the processor is coupled with a memory, and the memory is used to store programs or instructions, when the When the program or instruction is executed by the processor, the device is made to execute the method according to any one of claims 8-18 or the method according to claim 20.
A communication system, characterized by comprising: the communication device according to claim 21 and the communication device according to claim 22.
A computer-readable storage medium, characterized in that instructions are stored in the computer-readable storage medium, and when the instructions are run on a computer, the computer is made to execute the computer according to any one of claims 1-20. Methods.