CN114095124B

CN114095124B - Communication method, device and computer readable storage medium

Info

Publication number: CN114095124B
Application number: CN202111296380.4A
Authority: CN
Inventors: 吕婷; 张涛; 李福昌
Original assignee: China United Network Communications Group Co Ltd
Current assignee: China United Network Communications Group Co Ltd
Priority date: 2021-11-03
Filing date: 2021-11-03
Publication date: 2023-05-12
Anticipated expiration: 2041-11-03
Also published as: CN114095124A

Abstract

The application discloses a communication method, a device and a computer readable storage medium, which relate to the technical field of communication, and can configure a target base station and a target link according to the time delay requirement of a service, so that the time delay of the service is reduced, and the communication method, the device and the computer readable storage medium can be applied to a communication system. The communication method comprises the following steps: the delay management equipment receives the link transmission delays of a plurality of first candidate access network equipment, determines target access network equipment and a target link, and sends configuration information of the target link, wherein the configuration information of the target link is used for indicating the target link.

Description

Communication method, device and computer readable storage medium

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a communications method, an apparatus, and a computer readable storage medium.

Background

In communication networks, the types of supported services are diverse. Wherein the requirements for transmission delay are different for different types of traffic.

Currently, in order to meet the transmission delay requirements of different types of services, different transmission capacities of access network devices are respectively preconfigured for different service types, and service data is transmitted based on the configured transmission capacities. For example, for delay-sensitive services, the transmission capabilities of the access network device are configured to support lower transmission delays; for non-delay-sensitive services, the transmission capabilities of the access network device are configured to support higher transmission delays.

However, in the above scheme, the same access network device can only be preconfigured to a certain transmission capability, and when the same access network device simultaneously transmits different types of service data, only a preset certain transmission capability can be used to transmit different types of service data, and the transmission capability cannot be adaptively configured according to the differentiated service transmission delay requirement, so that the requirement of low-delay service is difficult to meet.

Disclosure of Invention

The application provides a communication method, a communication device and a computer readable storage medium, which are used for determining target access network equipment and a target link according to service types so as to meet the requirement of low-delay service.

In order to achieve the above purpose, the present application adopts the following technical scheme:

in a first aspect, the present application provides a communication method. The communication method comprises the following steps: the delay management device receives link transmission delays of a plurality of first candidate access network devices. The target terminal is covered by a plurality of first candidate access network devices. The link transmission delay is the transmission delay of a first candidate link corresponding to each of the plurality of first candidate access network devices, and one first candidate access network device corresponds to one or more first candidate links. The delay management device determines a target access network device and a target link. The target access network device is one of second candidate access network devices, the second candidate access network device is the access network device with a second candidate link in the first candidate access network device, and the second candidate link is the link with the link transmission delay less than or equal to the transmission delay threshold in the first candidate link. The target link is one of second candidate links corresponding to the target access network device. And the delay management equipment sends configuration information of the target link to the target access network equipment and the source access network equipment. The configuration information of the target link is used for indicating the target link.

Based on the communication method of the first aspect, the communication method screens out second candidate access network equipment on the basis of the first candidate access network equipment, and further determines target access network equipment and target links, wherein the link transmission delay of the target access network equipment is smaller than or equal to a transmission delay threshold value, from the second candidate access network equipment. Thus, the target access network equipment and the target link can be dynamically configured according to the time delay requirement of the service, and the requirement of the low-time delay service is met.

It will be appreciated that the target access network device may be determined first, then the target link may be determined, or the target link may be determined first, then the target link may be determined to determine the target access network device.

The target access network device is the access network device corresponding to the link with the minimum link transmission delay in the second candidate link. The target link is the link with the minimum link transmission delay in the second candidate link corresponding to the target access network equipment.

Alternatively, the link transmission delay of the second candidate link may include an air interface link delay and a backhaul link delay. The transmission delay threshold may include an air interface delay threshold and a backhaul delay threshold. The target access network device may be one of the access network devices corresponding to the third candidate link, and the target link may be one of the third candidate link corresponding to the target access network device. The third candidate link may be a link in the second candidate link, which satisfies one or more of the following: the air interface link delay is less than or equal to the air interface delay threshold. Or, the backhaul link delay is less than or equal to the backhaul delay threshold. Or, the sum of the air interface link delay and the backhaul link delay is smaller than or equal to the sum of the air interface delay threshold and the backhaul delay threshold.

Thus, the target access network device and the target link are determined according to the air interface link time delay and/or the backhaul link time delay, and the target link meeting the air interface time delay threshold and/or the backhaul time delay threshold can be further screened out.

Further, the target access network device may be the access network device corresponding to the link with the smallest sum of the air interface link delay and the backhaul link delay in the third candidate link. The target link may be a link with the smallest sum of the air interface link delay and the backhaul link delay in the third candidate link corresponding to the access network device.

In this way, the target access network device and the target link are determined according to the link with the smallest sum of the air interface link delay and the backhaul link delay, and the link with the smallest link transmission delay in the second candidate link can be determined as the target link, so that the transmission delay is further reduced.

Alternatively, the link transmission delay of the second candidate link may include an air interface link delay and a backhaul link delay. The transmission delay threshold may include an air interface delay threshold and a backhaul delay threshold. The target link may be one of the fourth candidate links, and the target access network device may be an access network device corresponding to the target link. The fourth candidate link may be one of the second candidate links that satisfies one or more of the following: the air interface link delay is less than or equal to the air interface delay threshold. Or, the backhaul link delay is less than or equal to the backhaul delay threshold.

Further, the target link may be a link with a smallest sum of the air interface link delay and the backhaul link delay among the fourth candidate links.

Therefore, the target link is determined according to the link with the smallest sum of the time delay of the air interface link and the time delay of the return link, and the link with the smallest transmission time delay of the link in the fourth candidate link can be determined as the target link, so that the transmission time delay is further reduced.

Optionally, the traffic rate of the target access network device is greater than or equal to the traffic rate threshold.

Wherein the traffic rate threshold may be a minimum rate requirement of the target traffic.

The target service is a service initiated by the target terminal.

Thus, the service rate of the target access network device can meet the rate requirement of the target service.

Optionally, the configuration information of the target link may further include one or more of the following: time slot length, resource prescheduling information, transmission error rate threshold.

Thus, the time slot length, the resource pre-scheduling information and the transmission error rate threshold of the target access network equipment can be configured based on the transmission delay requirement of the data to be transmitted. When the transmission delay threshold is small, a shorter time slot length is configured, or resource pre-scheduling is performed, or a higher transmission error rate threshold is configured, so that the transmission delay is further reduced.

Further, the slot length is positively correlated with the delay prediction value. The delay predicted value is determined according to the period delay in one or more periods, and the period delay is the transmission delay of the first candidate access network equipment in one period.

Further, if the delay predicted value is less than or equal to the fifth delay threshold, the resource prescheduling information indicates to turn on the resource prescheduling function. And if the time delay predicted value is larger than the fifth time delay threshold value, the resource pre-scheduling information indicates to close the resource pre-scheduling function. The delay predicted value is determined according to the period delay in one or more periods, and the period delay is the transmission delay of the first candidate access network equipment in one period.

Further, the transmission error rate threshold is inversely related to the transmission delay threshold.

Optionally, the transmission delay threshold is associated with a user delay threshold of the target terminal and a traffic delay threshold of the target traffic. The user delay threshold is a transmission delay requirement corresponding to a user type of the target terminal, and the service delay threshold is a transmission delay requirement corresponding to a service type of the target service. The target service is a service initiated by the target terminal.

In a second aspect, the present application provides a communication method. The communication method comprises the following steps: the source access network device receives configuration information of the target link. The configuration information of the target link is used for indicating the target link. And the source access network equipment sends the air interface indication information to the target terminal. The air interface indication information is used for indicating the target access network equipment and an air interface link in the target link. The air interface indication information is also used for indicating the target terminal to access the target access network equipment and receiving and sending the data to be transmitted of the target service by using the air interface link.

In a third aspect, the present application provides a communication method. The communication method comprises the following steps: the target access network device receives configuration information of the target link. The configuration information of the target link is used for indicating the target link. And receiving data to be transmitted of the target service according to the configuration information of the target link. And sending the data to be transmitted of the target service according to the configuration information of the target link.

In a fourth aspect, the present application provides a communication device. The device comprises: a transceiver module and a processing module. And the receiving and transmitting module is used for receiving the link transmission delays of the first candidate access network devices. The target terminal is covered by a plurality of first candidate access network devices. The link transmission delay is the transmission delay of a first candidate link corresponding to each of the plurality of first candidate access network devices, and one first candidate access network device corresponds to one or more first candidate links. And the processing module is used for determining the target access network equipment and the target link. The target access network equipment is one of second candidate access network equipment, the second candidate access network equipment is the access network equipment with a second candidate link, and the second candidate link is a link with the link transmission delay less than or equal to a transmission delay threshold value in the first candidate link. The target link is one of second candidate links corresponding to the target access network device. The receiving and transmitting module is further configured to send configuration information of a target link to the target access network device and the source access network device, where the configuration information of the target link is used to indicate the target link.

It will be appreciated that the target access network device may be determined first, then the target link may be determined, or the target link may be determined first, and then the target access network device may be determined according to the target link.

Alternatively, the link transmission delay of the second candidate link may include an air interface link delay and a backhaul link delay. The transmission delay threshold may include an air interface delay threshold and a backhaul delay threshold. The target access network device may be one of the access network devices corresponding to the third candidate link, and the target link may be one of the third candidate link corresponding to the target access network device.

The third candidate link may be a link in the second candidate link, which satisfies one or more of the following: the air interface link delay is less than or equal to the air interface delay threshold. Or, the backhaul link delay is less than or equal to the backhaul delay threshold. Or, the sum of the air interface link delay and the backhaul link delay is smaller than or equal to the sum of the air interface delay threshold and the backhaul delay threshold.

Or, alternatively, the link transmission delay of the second candidate link may include an air interface link delay and a backhaul link delay. The transmission delay threshold may include an air interface delay threshold and a backhaul delay threshold. The target link may be one of the fourth candidate links, and the target access network device may be an access network device corresponding to the target link. The fourth candidate link may be one of the second candidate links that satisfies one or more of the following: the air interface link delay is less than or equal to the air interface delay threshold. Or, the backhaul link delay is less than or equal to the backhaul delay threshold.

Alternatively, the traffic rate of the target access network device may be greater than or equal to the traffic rate threshold.

In a fifth aspect, the present application provides a communication device. The communication device includes: a receiving module and a transmitting module. And the receiving module is used for receiving the configuration information of the target link. The configuration information of the target link is used for indicating the target link. And the sending module is used for sending the air interface indication information to the target terminal. The air interface indication information is used for indicating the target access network equipment and an air interface link in the target link. The air interface indication information is also used for indicating the target terminal to access the target access network equipment and receiving and sending the data to be transmitted of the target service by using the air interface link.

In a sixth aspect, the present application provides a communication device. The communication device comprises a receiving module and a transmitting module. And the receiving module is used for receiving the configuration information of the target link and receiving the data to be transmitted of the target service according to the configuration information of the target link. The configuration information of the target link is used for indicating the target link. And the sending module is used for sending the data to be transmitted of the target service according to the configuration information of the target link.

In a seventh aspect, the present application provides a communication device comprising a memory for storing computer instructions and a processor connected to the memory by a bus. When the processor executes the computer instructions, the communication device performs the communication method according to any one of the first to third aspects.

In an eighth aspect, the present application provides a computer readable storage medium having stored thereon a computer program which, when loaded onto a computer for execution by the computer, causes the computer to perform the method according to any one of the first to third aspects.

Drawings

Fig. 1 is a schematic structural diagram of a communication system provided in the present application;

fig. 2 is a schematic flow chart of a communication method provided in the present application;

Fig. 3 is a schematic structural diagram of a communication device provided in the present application;

fig. 4 is a schematic structural diagram of a communication device provided in the present application.

Detailed Description

The following description of the technical solutions in the embodiments of the present application will be made clearly and completely with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

It should be noted that, in the embodiments of the present application, words such as "exemplary" or "such as" are used to mean serving as an example, instance, or illustration. Any embodiment or design described herein as "exemplary" or "for example" should not be construed as preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "such as" is intended to present related concepts in a concrete fashion.

In order to clearly describe the technical solutions of the embodiments of the present application, in the embodiments of the present application, the terms "first", "second", and the like are used to distinguish the same item or similar items having substantially the same function and effect, and those skilled in the art will understand that the terms "first", "second", and the like are not limited in number and execution order.

As described in the background, in a communication system, the types of supported services are diverse. Wherein the requirements for transmission delay are different for different types of traffic.

Currently, data may be transmitted based on the configured transmission capabilities. Specifically, the transmission capability of the access network device may be configured according to a type of service (hereinafter referred to as a service type), and when there is data to be transmitted that needs to be transmitted by the access network device, the access network device may transmit the data to be transmitted according to the already configured transmission capability. Taking a 5G system as an example, one or more of the following traffic types may exist in the 5G system: enhanced mobile bandwidth (enhanced mobile broadband, emmbb), mass machine communication (massive machine type of communication, mctc), or high reliability low latency communication (ultra reliable low latency communication, uslllc).

However, in the above scheme, when the same access network device transmits data of different service types, the transmission capability is the same, and the transmission capability cannot be adaptively configured according to the differentiated service transmission delay requirement, so that the transmission delay of different services is the same, and it is difficult to meet the requirement of the service with low delay. For example, if the transmission capability of the access network device is configured according to the eMBB service, when the access network device transmits the ul lc service data, the actual delay may be difficult to meet the requirement of the ul lc service on the delay.

In view of the foregoing, embodiments of the present application provide a communication method that may be applied to a communication system as shown in fig. 1. As shown in fig. 1, the communication system includes a delay management device 101, a plurality of access network devices 102, a core network device 103, and a terminal 104. Wherein the delay management device 101 is connected to the access network device 102. The access network device 102 is connected to the core network device 103, and the access network device 102 may also be connected to the terminal 104 through a wireless network. Illustratively, there may be one or more air interface links between the terminal 104 and the access network device 102. There may be one or more backhaul links between the access network device 102 and the core network device 103.

The latency management device 101 may be a computer, a server, or other devices or modules having a data processing function and a data transceiving function. It should be noted that in some embodiments, the latency management device 101 may be integrated with the access network device 102.

In this embodiment of the present application, the access network device 102 may be a Node B (Node B, NB), a base station controller (base station controller, BSC), a base transceiver station (base transceiver station, BTS), a home base station (e.g., home evolved NodeB, or home Node B, HNB), a baseband unit (BBU), a wireless relay Node, a wireless backhaul Node, a transmission point (transmission and reception point, TRP, transmission point, TP), or the like, or may be a 5G, e.g., a gNB in a New Radio (NR) system, or a transmission point (TRP, TP), one or a group of base stations (including multiple antenna panels) in a 5G system, or may also be a network Node forming a gNB or a transmission point, such as a baseband unit (BBU), or a Distributed Unit (DU), a Road Side Unit (RSU) with a base station function, or the like.

It should be noted that the transmission link may be configured by a cell (cell), and the access network device may include one or more cells.

In the present application, the terminal may be a mobile phone, a tablet computer, a handheld computer, a netbook, a personal digital assistant (personal digital assistant, PDA), a wearable electronic device, a notebook computer, or a vehicle-mounted device, or a virtual reality device, which is not limited in this application.

As shown in fig. 2, the present application provides a communication method, which is applicable to the communication system shown in fig. 1, and the communication method includes the following steps: s201 to S203.

S201, a plurality of first candidate access network devices send respective link transmission delays. The delay management device receives link transmission delays of a plurality of first candidate access network devices.

The target terminal is covered by a plurality of first candidate access network devices. In other words, the target terminal is within the coverage of all the first candidate access networks.

Among the plurality of first candidate access network devices, a source access network device and a target access network device in S202 described below are included.

In the present application, each first candidate access network device corresponds to one or more first candidate links. The link transmission delay is the transmission delay of the first candidate link corresponding to each of the plurality of first candidate access network devices. The first candidate link may include an air interface link and a backhaul link, and the link transmission delay includes an air interface link delay and a backhaul link delay. For example, the link transmission delay is the sum of the air interface link delay and the backhaul link delay.

A first candidate access network device may correspond to one or more air interface links, each air interface link corresponding to a carrier frequency configured on the first candidate access network device. The first candidate access network device may correspond to one or more backhaul links, each backhaul link corresponding to a transmission path between the first candidate access network device and the core network device, which may include one or more transmission network routing devices between the first candidate access network device and the core network device. The time delays of different air interface links can be the same or different. The time delays of different backhaul links may be the same or different.

The first candidate access network device corresponds to one or more first candidate links, each first candidate link comprises an air interface link and a backhaul link, and different first candidate links correspond to different air interface links or different backhaul links. For example, if the first candidate access network device corresponds to 2 air-interface links, which are respectively an air-interface link Uu1 and an air-interface link Uu2, and the first candidate access network device corresponds to 3 backhaul links, which are respectively a backhaul link Ng1, a backhaul link Ng2, and a backhaul link Ng3, then the first candidate links corresponding to the first candidate access network device have 6 first candidate links, which are respectively an air-interface link uu1+backhaul link Ng1, an air-interface link uu1+backhaul link Ng2, an air-interface link uu1+backhaul link Ng3, an air-interface link uu2+backhaul link Ng1, an air-interface link uu2+backhaul link Ng2, and an air-interface link uu2+backhaul link Ng3.

In this embodiment of the present application, the first candidate access network device may acquire the link transmission delay according to the period, and send the link transmission delay. The first candidate access network device may, for example, after acquiring the link transmission delay in a period, send the link transmission delay in the period. Alternatively, the first candidate access network device may further send the link transmission delays in the multiple periods together after acquiring the link transmission delays in the multiple periods.

In the embodiment of the present application, the backhaul link delay is a transmission delay on a backhaul link between an access network device and a core network device. Illustratively, the backhaul link delay of one backhaul link may be: the backhaul link is an average of transmission delays over the backhaul link over a plurality of periods. For example, if currently located in the T-th period, the backhaul link delay may be an average of the backhaul link delays in the T-1 th period, the T-2 th period, and the T-3 rd period. It will be appreciated that 3 cycles are used herein for example only, and that more or fewer cycles of backhaul link delay may be obtained in a particular implementation. In the present application, the plurality of periods may be continuous periods or discontinuous periods, and are not limited thereto.

The air interface link delay is an air interface link between the target terminal and the access network device, such as a transmission delay on the air interface link between the target terminal and the first candidate access network device. For example, the air interface link delay of one air interface link may be an average value of transmission delays of the air interface link over a plurality of periods. For the implementation of the air interface link delay, reference may be made to the implementation of the backhaul link delay, which is not described herein.

In the present application, the link transmission delay may be carried in the first message, so that the first candidate access network device sends the first message, that is, the link transmission delay may be sent. The delay management device receives the first message, namely the link transmission delay. For example, if the delay management device is integrated on an access network device and the access network device that receives and transmits the first message is different, the first message may be an X2 interface message or an Xn interface message.

It may be appreciated that in the embodiment of the present application, other information may also be included in the first message, for example, the first message may include a service rate.

Wherein the traffic rate is the maximum possible rate at which the access network device transmits data. Alternatively, the traffic rate may be an average, such as an arithmetic average or a weighted average, of the rates at which the access network device transmits data over a plurality of periods. For the implementation of the traffic rate, reference may be made to the implementation of the air interface link delay, which is not described here again.

In the embodiment of the application, the link transmission delay and the traffic rate may also be referred to as a transmission performance parameter. In other words, the transmission performance parameters include link transmission delay and traffic rate. The transmission performance parameter may be carried in a first message.

In a possible implementation manner, in S201, before the plurality of first candidate access network devices send respective link transmission delays, and the delay management device receives the link transmission delays of the plurality of candidate access network devices, the communication method further includes steps 1 to 3 as follows:

and step 1, the target terminal sends a target service request. The source access network device receives a target service request from a target terminal.

The target service request is used for requesting to send or receive data to be transmitted corresponding to the target service.

When the source access network equipment initiates a target service request for a target terminal, the access network equipment which establishes connection is established.

And step 2, the source access network equipment sends a second message, and the delay management equipment receives the second message.

Wherein the second message comprises: the identification of the target terminal, the identification of the target service and the identification of the source access network equipment. Similarly to the first message, the second message may also be an X2 interface message or an Xn interface message.

The identification of the target terminal is used for indicating the terminal which initiates the target service request, the identification of the target service is used for indicating the target service, and the identification of the source access network equipment is used for indicating: and when the target terminal initiates the target service request, the target terminal is connected with the access network equipment.

And step 3, according to the identification of the target terminal and the identification of the source access network equipment, determining the access network equipment covering the target terminal from all the access network equipment as first candidate access network equipment. That is, the first candidate access network device is determined according to the respective coverage areas of all access network devices. Or determining the access network equipment which covers the target terminal and has the service rate greater than the service rate threshold value as the first candidate access network equipment in all the access network equipment. For example, for voice traffic, if the traffic rate threshold is 64 kilobits per second (kilobits per second, kbps), then an access network device covering the target terminal and having a traffic rate greater than 64Kbps is determined to be the first candidate access network device.

Illustratively, the traffic rate threshold may be a minimum rate requirement of the target traffic.

S202, the time delay management device determines a target access network device and a target link.

The target access network device is one of second candidate access network devices, the second candidate access network device is the access network device with a second candidate link in the first candidate access network device, and the second candidate link is the link with the link transmission delay less than or equal to the transmission delay threshold in the first candidate link. The target link is one of second candidate links corresponding to the target access network device.

The transmission delay threshold may, for example, reflect the transmission delay requirement of a service of a user, i.e. the maximum transmission delay that can be tolerated to meet the user or service performance requirements. The transmission delay threshold is associated with a user delay threshold of the target terminal and a traffic delay threshold of the target traffic. The target service is a service initiated by the target terminal; the user delay threshold is the transmission delay requirement corresponding to the user type, and the service delay threshold is the transmission delay requirement corresponding to the service type. The service delay thresholds corresponding to different service types are different, and the transmission delay requirements corresponding to different user types may also be different. For example, the type of user may correspond to a priority of the user. The higher priority users have a higher demand for transmission delay. The propagation delay threshold may be related to the type of traffic and/or the type of user. Wherein, the user type can be determined according to the terminal. For example, the user type may be determined based on the identity of the terminal.

The following examples further illustrate the propagation delay threshold. For example, if the transmission delay threshold is related to both the service delay threshold and the user delay threshold, and the service type includes the first service to the third service (the service delay threshold is sequentially reduced), and the user type includes the first user to the third user (the user priority is sequentially higher), the service type, the service delay threshold, the correspondence between the user type and the user delay threshold, and the transmission delay threshold are as shown in table 1 below.

TABLE 1

Wherein, min { } represents taking the minimum value. As can be seen from table 1, for the data to be transmitted, the smaller one of the service delay threshold value of the corresponding service type of the data to be transmitted and the user delay threshold value corresponding to the user type can be determined as the transmission delay threshold value. If the service type corresponding to the data to be transmitted is the first service, the user type corresponding to the data to be transmitted is the first user, and the transmission delay threshold is the smaller one of A1 and B1. Similarly, the service type corresponding to the data to be transmitted is the second service, the corresponding user type is the second user, and the transmission delay threshold is the smaller one of A2 and B2. And if the service type corresponding to the data to be transmitted is a third service and the corresponding user type is a third user, the transmission delay threshold is the smaller one of A3 and B3.

When determining the transmission delay threshold, simultaneously considering the service delay threshold and the user delay threshold, and determining the smaller value of the service delay threshold and the user delay threshold as the transmission delay threshold; thus, the transmission delay of the target service can meet the requirements of the user type of the target terminal and the delay requirement corresponding to the service type of the target service as long as the transmission delay threshold is met.

In the present application, the step of determining the transmission delay threshold may be performed by the target terminal.

Alternatively, the step of determining the transmission delay threshold may be performed by the source access network device. At this time, before determining the transmission delay threshold, the terminal may send the identifier of the service type and the identifier of the user type to the source access network device, where the source access network device receives the identifier of the service type and the identifier of the user type, and determines the transmission delay threshold. The source access network device sends the determined transmission delay threshold to the delay management device.

Alternatively, the step of determining the transmission delay threshold may be performed by a delay management device. In this case, before determining the transmission delay threshold, the terminal may send the identifier of the service type and the identifier of the user type to the source access network device, where the source access network device receives the identifier of the service type and the identifier of the user type, and sends the identifier of the service type and the identifier of the user type to the delay management device, where the delay management device receives the identifier of the service type and the identifier of the user type, and determines the transmission delay threshold.

It can be understood that in the present application, the target access network device may be determined first, then the target link may be determined, or the target link may be determined first, and then the target access network device may be determined according to the target link.

The target access network device is the access network device corresponding to the link with the minimum link transmission delay in the second candidate link. The target link is the link with the minimum link transmission delay in the second candidate link corresponding to the target access network equipment. The step S202 is described in detail below by taking the link transmission delay as the sum of the air interface link delay and the backhaul link delay as an example, and combining the following modes one to four.

In a first mode, the link transmission delay of the second candidate link includes an air interface link delay and a backhaul link delay, the link transmission delay of the second candidate link is the sum of the air interface link delay and the backhaul link delay, and the target access network device is determined first and then the target link is determined. Reference may be made in particular to steps 4 to 7.

And 4, determining a link with the link transmission delay smaller than or equal to the transmission delay threshold value in the first candidate link as a second candidate link.

And 5, determining the first candidate access network equipment corresponding to the second candidate link as second candidate access network equipment.

And 6, determining one of the second candidate access network devices as the target access network device.

Illustratively, the step 6 may include: any one of the second candidate access network devices is determined to be the target link. Or if the transmission delay threshold includes an air interface delay threshold and a backhaul delay threshold, at this time, the air interface link delay or the backhaul link delay needs to meet respective corresponding requirements, and in this case, the step 6 may include the following steps 6-1 to 6-2.

And 6-1, determining the link meeting the first condition in the second candidate links as a third candidate link. That is, the third candidate link is a link satisfying the first condition among the second candidate links.

Wherein the first condition may include one or more of: the air interface link delay is less than or equal to the air interface delay threshold. Or, the backhaul link delay is less than or equal to the backhaul delay threshold. Or, the sum of the air interface link delay and the backhaul link delay is smaller than or equal to the sum of the air interface delay threshold and the backhaul delay threshold.

And 6-2, determining one of the access network devices corresponding to the third candidate link as a target access network device.

For example, any one of the access network devices corresponding to the third candidate link may be determined as the target access network device.

Or, the access network device corresponding to the link with the smallest link transmission delay (sum of the air interface link delay and the backhaul link delay) in the third candidate link may be determined as the target access network device. That is, the target access network device is the access network device corresponding to the link with the smallest sum of the air interface link delay and the backhaul link delay in the third candidate link.

And 7, determining one of the third candidate links corresponding to the target access network equipment as a target link.

Thus, the target access network device and the target link are determined according to the air interface link time delay and/or the backhaul link time delay, and the target access network device and the target link meeting the air interface time delay threshold and/or the backhaul time delay threshold can be further screened out.

If the target access network device is any one of the access network devices corresponding to the third candidate links, one of the third candidate links corresponding to the target access network device is determined to be the target link. In other words, the target link is one of the third candidate links corresponding to the target access network device. For example, a link with the smallest link transmission delay in the third candidate link corresponding to the target access network device may be determined as the target link. That is, the target link is the link with the smallest sum of the air interface link delay and the backhaul link delay in the third candidate link corresponding to the target access network device.

In this way, the target access network device and the target link are determined according to the link with the smallest sum of the air interface link delay and the backhaul link delay, and the link with the smallest link transmission delay in the third candidate link can be determined as the target link, that is, the link with the smallest link transmission delay in the second candidate link is determined as the target link, so that the transmission delay is further reduced.

In the second mode, if the link transmission delay of the second candidate link includes the air interface link delay and the backhaul link delay, the link transmission delay of the second candidate link is the sum of the air interface link delay and the backhaul link delay, the target link may be determined first, and then the target access network device may be determined. Reference may be made specifically to the following steps 8 to 10.

And 8, determining a link with the link transmission delay smaller than or equal to the transmission delay threshold value in the first candidate link as a second candidate link.

And 9, determining one of the second candidate links as a target link.

For example, any one of the second candidate links may be determined as the target link.

Or if the transmission delay threshold includes an air interface delay threshold and a backhaul delay threshold, the air interface link delay or backhaul link delay needs to meet respective corresponding requirements, and at this time, the step 9 may include the following steps 9-1 to 9-2.

And 9-1, determining the link meeting the second condition in the second candidate links as a fourth candidate link. In other words, the fourth candidate link is a link satisfying the second condition among the second candidate links.

Wherein the second condition may include one or more of: the air interface link delay is less than or equal to the air interface delay threshold. Or, the backhaul link delay is less than or equal to the backhaul delay threshold.

And 9-2, determining one of the fourth candidate links as a target link.

For example, any one of the fourth candidate links may be determined as the target link.

Thus, the target link is determined according to the air interface link delay and/or the backhaul link delay, and the target link meeting the air interface delay threshold and/or the backhaul delay threshold can be further screened out.

For example, the link with the smallest link transmission delay (sum of the air interface link delay and the backhaul link delay) in the fourth candidate link may be determined as the target link. That is, the target link is the link with the smallest sum of the air interface link delay and the backhaul link delay in the fourth candidate link.

In this way, the target link is determined according to the link with the smallest sum of the air interface link delay and the backhaul link delay, and the link with the smallest link transmission delay in the fourth candidate link can be determined as the target link, that is, the link with the smallest link transmission delay in the second candidate link is determined as the target link, so that the transmission delay is further reduced.

And step 10, determining the access network equipment corresponding to the target link as target access network equipment. I.e. the target access network device is the access network device corresponding to the target link.

It can be understood that, in the present application, if the first message includes a service rate, the service rate of the target access network device determined in the present application may also be greater than or equal to the service rate threshold. In this case, if in the above step 3, the first candidate access network device is determined according to the coverage area of the access network device, then the target access network device and the target link may be determined by combining the service rate, the air interface link delay and the backhaul link delay. The following description is made in connection with the third and fourth modes.

Mode three, the target access network device and the target link may be determined using similar principles as mode one. In this case, the third mode is different from the first mode in that: in the third mode, the access network device corresponding to the second candidate link and having the service rate greater than or equal to the service rate threshold is determined as the target access network device.

Mode four, the target access network device and the target link may be determined using a similar principle as mode two. In this case, the fourth mode is different from the second mode in that: in a fourth mode, a link, of the first candidate links, whose link transmission delay is less than or equal to a transmission delay threshold and whose corresponding traffic rate of the first candidate access network device is greater than a traffic rate threshold, is determined to be a second candidate link.

The target access network device or the second candidate access network device is selected according to the service rate threshold, so that the determined service rate of the target access network device can meet the rate requirement of the target service, and the user experience is improved.

It can be understood that, in this application, if in step 3 above, the first candidate access network device is determined by combining the respective service rates and coverage areas of all the access network devices, after determining the first candidate access network device, the target access network device and the target link may be determined according to the first or second mode above.

S203, the delay management device sends configuration information of the target link. The source access network device and the target access network device receive configuration information of the target link.

The configuration information of the target link is used for indicating the target link.

In one possible implementation, the configuration information of the target link may include: the identification of the target terminal, the identification of the target service, the identification of the target access network equipment and the identification of the target link.

Based on this, the communication method shown in fig. 2 may further include steps 11 to 12.

And step 11, the source access network equipment sends air interface indication information to the target terminal.

The air interface indication information is used for indicating the target access network equipment and an air interface link in the target link.

In step 12, the target terminal accesses the target access network device, and uses the air interface link indicated by the air interface indication information to communicate (receive and send the data to be transmitted of the target service).

Thus, the target terminal can access the target link with the service rate larger than the service rate threshold and the transmission delay smaller than or equal to the transmission delay threshold, and transmit the service data, thereby reducing the service transmission delay.

Before the target terminal accesses the target link, if the target access network device and the source access network device are different access network devices, the target terminal is switched to the target access network device from the source access network device. Thus, the target terminal can be accessed to the access network equipment with optimal transmission performance, thereby reducing service transmission delay.

The communication method shown in fig. 2 may further include steps 13 to 15.

And step 13, the target access network equipment receives the configuration information of the target link. The configuration information of the target link is used to indicate the target link.

And step 14, the target access network equipment receives the data to be transmitted of the target service according to the configuration information of the target link.

And step 15, the target access network equipment sends the data to be transmitted of the target service according to the configuration information of the target link.

Specifically, the target access network device may configure the transmission capability related parameters according to the target link configuration information, for example, one or more of the following: time slot length, resource prescheduling information, transmission error rate threshold, and performing steps 14 and 15 after configuring transmission capability related parameters.

In this application, the configuration information of the target link may further include one or more of the following: slot length, resource prescheduling information, transmission error rate threshold, or maximum number of transmissions.

Illustratively, a slot is a basic unit of data scheduling. The time slot length is the time length occupied by one time slot, the time slot length is related to the subcarrier interval, the larger the subcarrier interval is, the smaller the time slot length is, the smaller the subcarrier interval is, and the larger the time slot length is. For different network systems, the values of the time slot lengths are different. For example, in a 4G system, the subcarrier spacing is 15 kilohertz (KHz) and the slot length is 0.5 milliseconds (ms). As another example, in a 5G system, the subcarrier spacing may be multiple, and the slot length may be 1ms, 0.5ms, 0.25ms, 0.125ms, or 0.0625ms, respectively, corresponding to different subcarrier spacing.

And the resource pre-scheduling information is used for indicating whether to perform resource pre-scheduling or not. The resource pre-scheduling refers to that the access network equipment reserves resources for transmitting data.

And the transmission error rate threshold is used for indicating the error rate of triggering the retransmission of the data packet. And if the error rate is larger than the error rate threshold, triggering the retransmission of the data packet, and if the error rate is smaller than or equal to the error rate threshold, not triggering the retransmission of the data packet.

The maximum number of transmissions indicates the maximum number of data transmissions (first transmission and retransmission). If the number of data transmissions is equal to the maximum number of transmissions, no retransmission is performed. If the number of data transmissions is less than the maximum number of transmissions, retransmission may be performed again.

In this application, before S203, the communication method shown in fig. 2 may further include step 13.

In step 13, the latency management device determines one or more of the following: slot length, resource prescheduling information, transmission error rate threshold, or maximum number of transmissions.

The following describes a method for determining a slot length, resource prescheduling information, a transmission error rate threshold, or a maximum number of transmissions, respectively.

1. A method of determining the length of a time slot.

In the application, a first candidate access network device acquires a period delay.

The period delay is the transmission delay of a first candidate access network device in one period. The period delay may be, for example, an average value of transmission delays of data corresponding to all services in one period on one access network device.

The first candidate access network device sends the period time delay corresponding to each of the N periods to the time delay management device. The delay management device receives the period delays of the first candidate access network devices in N periods.

And the delay management equipment determines a delay predicted value according to the period delay of the first candidate access network equipment in N periods. In other words, the delay prediction value is determined from the period delay over one or more periods.

Specifically, the delay management device may establish a prediction model according to the period delays corresponding to the first candidate access network devices. And then obtaining the delay predicted value of each first candidate access network device according to the prediction model.

For example, a respective period delay in each of the N periods may be used as the training sample set. Wherein the period delay in one period corresponds to one training sample in the training sample set. Model training is carried out according to the N training samples, so that a prediction model is obtained. Thus, the period time delay of N periods is input into the prediction model, and the time delay predicted value can be obtained. For specific implementation of the prediction model, reference may be made to an existing implementation, which is not described herein.

And the time slot length in the target link configuration information is determined by the time delay management module according to the time delay predicted value corresponding to the target access network equipment. Wherein the slot length is positively correlated with the delay prediction value. Illustratively, the slot length may be determined according to a correspondence between the delay predicted value and the slot length.

The correspondence between the delay predicted value and the slot length is illustrated in connection with a communication system. In a communication system, a first latency threshold > a second latency threshold > a third latency threshold > a fourth latency threshold.

If the predicted delay value is greater than the first delay threshold, the time slot length is the first time slot length.

If the time delay predicted value is smaller than or equal to the first time delay threshold value and is larger than the second time delay threshold value, the time slot length is the second time slot length.

If the time delay predicted value is smaller than or equal to the second time delay threshold value and is larger than the third time delay threshold value, the time slot length is the third time slot length.

If the delay predicted value is smaller than or equal to the third delay threshold and larger than the fourth delay threshold, the time slot length is the fourth time slot length.

If the delay predicted value is less than or equal to the fourth delay threshold, the time slot length is the fourth time slot length.

Wherein the first slot length > the second slot length > the third slot length > the fourth slot length.

In the following, a 5G system is illustrated, where the first delay threshold, the second delay threshold, the third delay threshold, and the fourth delay threshold correspond to 30ms, 20ms, 10ms, and 5ms in order, and the first slot length, the second slot length, the third slot length, and the fourth slot length correspond to 0.5ms, 0.25ms, 0.125ms, and 0.0625ms in order.

Thus, the size of the delay predicted value corresponding to the target access network device is positively correlated with the size of the average transmission delay of all the services on the target access network device, and the delay predicted value reflects the average delay requirement of all the services accessed to the target access network device; and simultaneously, after the time slot length corresponding to the target access network equipment is configured, when all target terminals accessed to the target access network equipment communicate with the target access network, data transmission is carried out according to the time slot length configuration, and different types of service transmission use the same time slot length configuration. In order to meet the service delay requirement and the capacity (user connection number) requirement of the target access network equipment at the same time, the embodiment dynamically configures the time slot length corresponding to the target access network equipment according to the delay predicted value, so that the time slot length of the target access network equipment is matched with the service delay requirement; when the time delay predicted value is smaller, the low-time delay business is more in all businesses currently accessed to the target access network equipment, and the target access network equipment can be configured with smaller time slot length, so that the data transmission time delay is reduced, and the low-time delay requirement of the business is met; if the time delay predicted value is larger, the low-time delay business in all businesses currently accessed to the target access network equipment is less, the target access network equipment can configure larger time slot length, the number of sub-carriers corresponding to the time slot length is increased, the number of user connections supported by the target access network equipment is further increased, and the business time delay requirement and the capacity requirement of the access network equipment are both considered.

2. A method for determining resource pre-scheduling information.

If the time delay predicted value is larger than the fifth time delay threshold value, the resource pre-scheduling information indicates to close the resource pre-scheduling function, and if the time delay predicted value is smaller than or equal to the fifth time delay threshold value, the resource pre-scheduling information indicates to open the resource pre-scheduling function. Illustratively, the resource prescheduling information may be carried by one binary bit, e.g., the resource prescheduling function may be turned on by a binary bit "1" and the resource prescheduling function may be turned off by a binary bit "0". At this time, if the delay predicted value is greater than the fifth delay threshold, the resource prescheduling information is determined to be "1". And if the delay predicted value is smaller than or equal to the fifth delay threshold value, determining that the resource prescheduling information is 0. Illustratively, in a 5G system, the fifth latency threshold may be 10ms.

After the resource pre-scheduling is started, the target access network equipment needs to reserve part of transmission resources for the target terminal, so that the schedulable resources of the target access network equipment are reduced; therefore, the resource pre-scheduling information is determined according to the range of the time delay predicted value, the resource pre-scheduling function can be started when the time delay requirement of the target service is high (the time delay predicted value is smaller), and the resource pre-scheduling function can be closed when the time delay requirement of the service is not high (the time delay predicted value is larger), so that the resource utilization rate is improved. 3. A method for determining a transmission error rate threshold.

In the application, the transmission error rate threshold may be inversely related to the transmission delay threshold, so that the transmission error rate threshold may be determined according to the transmission delay threshold. The transmission error rate threshold may be determined, for example, from a correspondence of a transmission delay threshold and a transmission error rate threshold.

For example, in a communication system, the sixth latency threshold > the seventh latency threshold > the eighth latency threshold.

If the transmission delay threshold is greater than the sixth delay threshold, the transmission error rate threshold may be the first transmission error rate threshold.

If the transmission delay threshold is less than or equal to the sixth delay threshold and greater than the seventh delay threshold, the transmission error rate threshold may be a second transmission error rate threshold. Wherein transmission error rate threshold = first transmission error rate threshold + transmission error rate variance.

If the transmission delay threshold is smaller than or equal to the seventh delay threshold and larger than the eighth delay threshold, the transmission error rate threshold is a third transmission error rate threshold.

Wherein, the third transmission error rate threshold=the first transmission error rate threshold+2×transmission error rate variation.

If the transmission delay threshold is less than or equal to the eighth delay threshold, the transmission error rate threshold is a fourth transmission error rate threshold.

Wherein transmission error rate variation= (fourth transmission error rate threshold-first transmission error rate threshold)/3. The first transmission error rate threshold value < the second transmission error rate threshold value < the third transmission error rate threshold value < the fourth transmission error rate threshold value.

Taking a 5G communication system as an example, the sixth delay threshold, the seventh delay threshold and the eighth delay threshold correspond to: 30ms, 20ms, 10ms.

It should be noted that in the present application, more delay thresholds may be set, that is, there may be more transmission error rate thresholds, which are not described herein. 4. And determining the maximum transmission times.

Similarly to the transmission error rate threshold, in the present application, the maximum number of transmissions may be determined according to the transmission delay threshold. For example, the maximum transmission times may be determined according to a correspondence between the transmission delay threshold and the maximum transmission times, which is not described herein. In this embodiment, the threshold value of the transmission error rate or the maximum transmission frequency is related to the frequency of data retransmission after the demodulation failure of the service data; when the delay requirement of the target service is higher (such as a smaller transmission delay threshold), a larger transmission error rate threshold and smaller maximum transmission times can be configured, so that data retransmission is reduced as much as possible, and the service low delay is further reduced. When the delay requirement of the target service is not high (such as a larger transmission delay threshold), a smaller transmission error rate threshold and a larger maximum transmission times can be configured, so that the data retransmission frequency is increased to improve the transmission reliability.

Thus, the time slot length, the resource prescheduling information, the transmission error rate threshold value or the maximum transmission times of the target access network equipment can be configured based on the time delay requirement of the target service. When the transmission delay threshold is small, a shorter time slot length is configured, or resource pre-scheduling is performed, or a higher transmission error rate threshold is configured, or a smaller maximum transmission frequency is configured, so that the transmission delay is further reduced.

Based on the communication method, the second candidate access network equipment is screened out on the basis of the first candidate access network equipment, and then the target access network equipment and the target link of which the link transmission delay is less than or equal to the transmission delay threshold are determined from the second candidate access network equipment. Thus, the target access network device and the target link can be dynamically configured according to the time delay requirement of the service so as to meet the requirement of the low-time delay service.

In addition, in the application, the target access network device and the target link, of which the service rate is greater than the service rate threshold and the link transmission delay is less than or equal to the transmission delay threshold, are determined, so that the service transmission delay can be reduced. In addition, the access network device can dynamically configure parameters such as time slot length, resource pre-scheduling information, transmission error rate threshold and the like according to the target link configuration information, can provide differentiated transmission capacity for different types of services, and can adapt the transmission capacity of the access network device to the service delay requirements so as to further meet the delay requirements of different types of services.

In one embodiment, as shown in fig. 3, the present application also provides a communication device 300. The communication device 300 includes: a transceiver module 302 and a processing module 301.

The transceiver module 302 is configured to receive link transmission delays of a plurality of first candidate access network devices. The target terminal is covered by a plurality of first candidate access network devices. The link transmission delay is the transmission delay of a first candidate link corresponding to each of the plurality of first candidate access network devices, and one first candidate access network device corresponds to one or more first candidate links.

A processing module 301 is configured to determine a target access network device and a target link. The target access network equipment is one of second candidate access network equipment, the second candidate access network equipment is the access network equipment with a second candidate link, and the second candidate link is a link with the link transmission delay less than or equal to a transmission delay threshold value in the first candidate link. The target link is one of second candidate links corresponding to the target access network device.

The transceiver module 302 is further configured to send configuration information of a target link to the target access network device and the source access network device, where the configuration information of the target link is used to indicate the target link.

As shown in fig. 4, in one embodiment, the present application provides a communication device 400. The communication apparatus 400 includes: a receiving module 401 and a transmitting module 402. The receiving module 401 is configured to receive configuration information of a target link. The configuration information of the target link is used for indicating the target link. And the sending module 402 is configured to send the air interface indication information to the target terminal. The air interface indication information is used for indicating the target access network equipment and an air interface link in the target link. The air interface indication information is also used for indicating the target terminal to access the target access network equipment and receiving and sending the data to be transmitted of the target service by using the air interface link.

As shown in fig. 4, the present application provides a communication device 400. The communication device 400 comprises a receiving module 401 and a transmitting module 402. The receiving module 401 is configured to receive configuration information of the target link, and receive data to be transmitted of the target service according to the configuration information of the target link. The configuration information of the target link is used for indicating the target link. And the sending module 402 is configured to send data to be transmitted of the target service according to the configuration information of the target link.

The present application also provides a computer-readable storage medium including computer-executable instructions. The computer-executable instructions, when executed on a computer, cause the computer to perform the functions of the delay management device, or the source access network device, or the target access network device, in the communication method provided in fig. 2 as described above.

The present application also provides a computer program product directly loadable into a memory and containing software code, which, when loaded and executed via a computer, is capable of implementing the functions of the delay management device, or the functions of the source access network device, or the functions of the target access network device in the communication method provided in fig. 2 of the present application.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented using a software program, it may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer-executable instructions are loaded and executed on a computer, the processes or functions in accordance with the present application are produced in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer instructions may be stored in or transmitted from one computer-readable storage medium to another, for example, a website, computer, server, or data center via a wired (e.g., coaxial cable, fiber optic, digital subscriber line (digital subscriber line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. Computer readable storage media can be any available media that can be accessed by a computer or data storage devices including one or more servers, data centers, etc. that can be integrated with the media. The usable medium may be a magnetic medium (e.g., a floppy disk, a hard disk, a magnetic tape), an optical medium (e.g., a DVD), or a semiconductor medium (e.g., a Solid State Disk (SSD)), or the like.

From the foregoing description of the embodiments, it will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-described division of functional modules is illustrated, and in practical application, the above-described functional allocation may be implemented by different functional modules according to needs, i.e. the internal structure of the apparatus is divided into different functional modules to implement all or part of the functions described above.

In the several embodiments provided by the present invention, it should be understood that the disclosed apparatus and method may be implemented in other manners. For example, the above-described embodiments of the apparatus are merely illustrative, and the division of modules or units, for example, is merely a logical function division, and other manners of division are possible when actually implemented. For example, multiple units or components may be combined or may be integrated into another device, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form. The units described as separate parts may or may not be physically separate, and the parts shown as units may be one physical unit or a plurality of physical units, may be located in one place, or may be distributed in a plurality of different places. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in the embodiments of the present invention may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units. The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a readable storage medium. Based on such understanding, the technical solution of the embodiments of the present application may be essentially or a part contributing to the prior art or all or part of the technical solution may be embodied in the form of a software product stored in a storage medium, including several instructions for causing a device (may be a single-chip microcomputer, a chip or the like) or a processor (processor) to perform all or part of the steps of the method described in the embodiments of the present invention. And the aforementioned storage medium includes: a usb disk, a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk, etc.

The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the scope of the present invention should be included in the present invention. Therefore, the protection scope of the invention is subject to the protection scope of the claims.

Claims

1. A communication method applied to a latency management device, the method comprising:

receiving a second message; wherein the second message includes: the identification of the target terminal, the identification of the target service and the identification of the source access network equipment;

according to the identification of the target terminal and the identification of the source access network equipment, determining the access network equipment covering the target terminal in all network equipment as first candidate access network equipment;

receiving link transmission delays of a plurality of first candidate access network devices; wherein the plurality of first candidate access network devices all cover the target terminal; the link transmission delay is the transmission delay of a first candidate link corresponding to each of the plurality of first candidate access network devices, and one first candidate access network device corresponds to one or a plurality of first candidate links;

determining target access network equipment and a target link; the target access network device is one of second candidate access network devices, the second candidate access network device is the access network device with a second candidate link in the first candidate access network device, and the second candidate link is a link with a link transmission delay less than or equal to a transmission delay threshold in the first candidate link; the target link is one of the second candidate links corresponding to the target access network equipment;

And sending configuration information of the target link to the target access network equipment and the source access network equipment, wherein the configuration information of the target link is used for indicating the target link.

2. The communication method according to claim 1, wherein the target access network device is an access network device corresponding to a link with the smallest link transmission delay among the second candidate links;

and the target link is the link with the minimum transmission delay in the second candidate link corresponding to the target access network equipment.

3. A communication method according to claim 1 or 2, wherein the traffic rate of the target access network device is greater than or equal to a traffic rate threshold.

4. The communication method according to claim 1 or 2, wherein the configuration information of the target link further comprises one or more of the following: time slot length, resource prescheduling information, transmission error rate threshold.

5. The communication method of claim 4, wherein the slot length is positively correlated with a delay prediction value; the delay predicted value is determined according to the period delay in one or more periods, and the period delay is the transmission delay of the first candidate access network equipment in one period.

6. The communication method according to claim 4, wherein the resource pre-scheduling information indicates to turn on a resource pre-scheduling function if the delay prediction value is less than or equal to a fifth delay threshold;

if the time delay predicted value is larger than the fifth time delay threshold value, the resource pre-scheduling information indicates to close a resource pre-scheduling function;

the delay predicted value is determined according to the period delay in one or more periods, and the period delay is the transmission delay of the first candidate access network equipment in one period.

7. The communication method of claim 4, wherein the transmission error rate threshold is inversely related to the transmission delay threshold.

8. The communication method according to claim 1, wherein the transmission delay threshold is associated with a user delay threshold of a target terminal and a traffic delay threshold of a target traffic; the user delay threshold is a transmission delay requirement corresponding to a user type of the target terminal, and the service delay threshold is a transmission delay requirement corresponding to a service type of the target service; the target service is a service initiated by the target terminal.

9. A communication method, applied to a source access network device, the communication method further comprising:

receiving a target service request from a target terminal; the target service request is used for requesting to send or receive data to be transmitted of the target service;

sending a second message; wherein the second message includes: the identification of the target terminal, the identification of the target service and the identification of the source access network equipment;

receiving configuration information of a target link; the configuration information of the target link is used for indicating the target link;

transmitting air interface indication information to the target terminal; the air interface indication information is used for indicating the target access network equipment and an air interface link in the target link;

the air interface indication information is also used for indicating the target terminal to access the target access network equipment and receiving and sending the data to be transmitted of the target service by using the air interface link.

10. A method of communication, for application to a target access network device, the method comprising:

receiving data to be transmitted of a target service according to the configuration information of the target link;

And sending the data to be transmitted of the target service according to the configuration information of the target link.

11. A communication device, the device comprising: a transceiver module and a processing module;

the receiving and transmitting module is used for receiving a second message; wherein the second message includes: the identification of the target terminal, the identification of the target service and the identification of the source access network equipment;

the processing module is configured to determine, as a first candidate access network device, an access network device covering the target terminal from all network devices according to the identifier of the target terminal and the identifier of the source access network device;

the receiving and transmitting module is used for receiving link transmission delays of a plurality of first candidate access network devices; wherein the plurality of first candidate access network devices all cover the target terminal; the link transmission delay is the transmission delay of a first candidate link corresponding to each of the plurality of first candidate access network devices, and one first candidate access network device corresponds to one or a plurality of first candidate links;

the processing module is used for determining target access network equipment and a target link; the target access network device is one of second candidate access network devices, the second candidate access network device is the access network device with a second candidate link, and the second candidate link is a link with a link transmission delay less than or equal to a transmission delay threshold value in the first candidate link; the target link is one of the second candidate links corresponding to the target access network equipment;

The transceiver module is further configured to send configuration information of the target link to the target access network device and the source access network device, where the configuration information of the target link is used to indicate the target link.

12. A communication device, the communication device further comprising: a receiving module and a transmitting module;

the receiving module is used for receiving a target service request from a target terminal; the target service request is used for requesting to send or receive data to be transmitted of the target service;

the sending module is used for sending a second message; wherein the second message includes: the identification of the target terminal, the identification of the target service and the identification of the source access network equipment;

the receiving module is used for receiving the configuration information of the target link; the configuration information of the target link is used for indicating the target link;

the sending module is used for sending air interface indication information to the target terminal, wherein the air interface indication information is used for indicating target access network equipment and an air interface link in the target link; the air interface indication information is also used for indicating the target terminal to access the target access network equipment and receiving and sending data to be transmitted of the target service by using the air interface link.

13. A communication device, the communication device comprising: a receiving module and a transmitting module;

the receiving module is further configured to receive data to be transmitted of a target service according to configuration information of the target link;

and the sending module is used for sending the data to be transmitted of the target service according to the configuration information of the target link.

14. A communication device comprising a memory for storing computer instructions and a processor connected to the memory by a bus;

when the processor executes the computer instructions, the communication device performs the communication method of any one of claims 1 to 8, or the communication method of claim 9, or the communication method of claim 10.

15. A computer-readable storage medium, having stored thereon a computer program which, when loaded onto a computer for execution by the computer, causes the computer to perform the communication method according to any one of claims 1 to 8, or the communication method according to claim 9, or the communication method according to claim 10.