WO2020207437A1

WO2020207437A1 - Communication network determining method, apparatus, and system

Info

Publication number: WO2020207437A1
Application number: PCT/CN2020/083968
Authority: WO
Inventors: 徐蓓; 郭瑾; 张朝辉
Original assignee: 华为技术有限公司
Priority date: 2019-04-12
Filing date: 2020-04-09
Publication date: 2020-10-15
Also published as: CN111818618B; CN111818618A

Abstract

Provided in the embodiments of the present application are a communication network determining method, apparatus, and system, relating to the technical field of communication, and used for increasing the communication efficiency of message transmission between a terminal and an edge platform. The solution comprises: a communication apparatus receives a service message, the service message being a service message of a terminal and another device communicating by means of the communication apparatus, and the service message comprising a service identifier and a first instruction used for instructing the communication apparatus to plan a target network for transmitting service messages. On the basis of an identifier of the terminal and the service identifier, the communication apparatus determines a plurality of candidate networks, the candidate networks belonging to the networks corresponding to the network types supported by the terminal and to the networks corresponding to the network types configured by the communication apparatus for the service; and, on the basis of the network state of the plurality of candidate networks, the communication apparatus determines a target network meeting the service demand corresponding to the service, the target network being used for transmitting service messages.

Description

Method, device and system for determining communication network

This application claims the priority of a Chinese patent application filed with the State Intellectual Property Office on April 12, 2019, the application number is 201910295590.8, and the application name is "a method, device and system for determining a communication network", the entire content of which is incorporated by reference In this application.

Technical field

The embodiments of the present application relate to the field of communication technologies, and in particular, to a method, device, and system for determining a communication network.

Background technique

The terminal (for example, a vehicle) can support a PC5 interface and a Uu interface. Among them, the Uu interface is used for communication between the terminal and the base station it accesses, and the PC5 interface is used for interaction between the terminals. For example, terminal A can use the PC5 interface to broadcast road events to terminal B and receive road events. Terminal A uses the Uu interface to report vehicle data to the base station it accesses. When the terminal supports both the PC5 interface and the Uu interface, the edge platform issues a message to the terminal, or the terminal reports vehicle data to the edge platform, if only one communication network is used. For example, the terminal uses the Uu interface between the base station and the edge platform to transmit messages. When the processing capability of the Uu interface decreases or the network is congested, the message delay is very high, which may cause the message transmission to fail.

Summary of the invention

The embodiments of the present application provide a method, device, and system for determining a communication network to improve the communication efficiency of message transmission between a terminal and an edge platform.

In order to achieve the foregoing objectives, the embodiments of the present application provide the following technical solutions:

In a first aspect, an embodiment of the present application provides a method for determining a communication network, including: a communication device receives a service message, where the service message is a service message for a terminal and other devices to communicate through the communication device, and the service message includes a service An identifier and a first instruction, the first instruction is used to instruct the communication device to plan a target network for transmitting the service message; the communication device determines a variety of candidate networks according to the terminal identifier and the service identifier; The selected network is not only a network corresponding to the network type supported by the terminal, but also a network corresponding to the network type configured by the communication device for the service. The communication device determines a target network that meets the service requirements corresponding to the service according to the network status of the multiple candidate networks, and the target network is used to transmit service messages.

An embodiment of the present application provides a method for determining a communication network. The method receives a service message through a communication device. The service message includes a service identifier and a first indication. The first indication is used to instruct the communication device to plan a target network for transmitting the service message. The communication device determines a variety of candidate networks according to the identification and service identification of the terminal. The communication device determines a target network that meets the service requirements corresponding to the service according to the network status and service requirements of the multiple candidate networks. In this way, when the terminal supports multiple candidate networks, the network type of the service requirement can be combined, and the communication network for transmitting the service message can be flexibly selected according to the network corresponding to the common network type of the terminal and the service requirement. For example, the communication device can select a communication network with high signal strength, no network congestion, high bandwidth and low delay communication network to transmit service messages, so as to improve transmission efficiency.

In a possible implementation manner, the method provided in the embodiment of the present application further includes: the communication device obtains the network status of the network to be selected, and the network status is used to reflect the congestion level of the network to be selected.

In a possible implementation manner, the method provided in the embodiment of the present application further includes: receiving a service configuration from an application server, the service configuration including any one or more of the following information of the service corresponding to the service identifier: Business identification, business requirements, or transmission path direction. According to the service configuration, the network type that meets the service requirements is configured for the service.

In a possible implementation manner, when the network to be selected includes a network with a network type of PC5, the method provided in the embodiment of the present application further includes: the communication device obtains the communication with the terminal according to the location information of the terminal. The processing capacity of the roadside unit RSU for communication. The communication device determines the target network that meets the service requirements corresponding to the service according to the network status of the multiple candidate networks, including: the communication device determines the target network according to the network status of the multiple candidate networks and the processing capability of the RSU The target network for transmitting the service message. Because the PC5 interface has stronger support for mobility than the Uu interface, the PC5 interface has also enhanced the physical layer structure to support higher mobile speeds (500km/h). Therefore, combined with the processing capabilities of the RSU, determine the communication network for transmitting business messages. The target network can be further planned for business messages.

In a possible implementation manner, the communication device determines the target network for transmitting the service message according to the network status of the multiple candidate networks and the processing capability of the RSU, including: the communication device determines that the terminal supports the PC5 network And the network type configured for the service includes the PC5 network, and the communication device obtains the processing capability of the RSU communicating with the terminal according to the location information of the terminal.

In a possible implementation manner, the reliability of the service corresponding to the service identifier is lower than the first threshold, and the target network is the network corresponding to the RSU. For low-reliability services, the network transmission corresponding to RSU can support higher mobile speed.

In a possible implementation manner, the delay of the service corresponding to the service identifier is lower than the second threshold, and the target network is a network whose network status meets service requirements among the multiple candidate networks, or a network corresponding to the RSU.

In a possible implementation, the bandwidth of the service corresponding to the service ID is higher than the third threshold, or the reliability of the service corresponding to the service ID is higher than the fourth threshold, and the target network is a network of multiple candidate networks whose network status satisfies the service Identify the network corresponding to the service requirement and the network corresponding to the RSU.

In a possible implementation manner, the bandwidth of the service corresponding to the service identifier is higher than the third threshold. The method provided in the embodiment of the present application further includes: the communication device generates one or more of the service messages according to the service message A message packet, each of the one or more message packets includes a second indication, and the second indication is used to indicate the order of the message packets. The communication device transmits the one or more message packets to the terminal or the other device using a network whose network status in the multiple candidate networks meets the service requirements corresponding to the service identifier and the network corresponding to the RSU. The transmission efficiency of one or more message packets can be improved by using a network whose network status meets the service requirements corresponding to the service identifier and the network corresponding to the RSU in a variety of candidate networks for one or more message packets.

In a possible implementation manner, the reliability of the service corresponding to the service identifier is higher than the fourth threshold. The method provided in the embodiment of the present application further includes: the communication device performs a copy operation on the service message to obtain the copied service message. The communication device transmits the service message using a network in the multiple candidate networks whose network status meets the service requirements corresponding to the service identifier, and uses the network corresponding to the RSU to transmit the copy service message, the copy service message and all The service message also carries time information, which can provide transmission reliability.

In a possible implementation manner, the communication device is deployed in the terminal, and the communication device obtains the processing capability of the RSU communicating with the terminal according to the location information of the terminal, including: the communication device sends a first request message to the module of the terminal, The request message is used to request the processing capability of the RSU. The communication device receives the processing power of the RSU from the module.

In a possible implementation manner, the communication device is deployed on a platform that provides services for the terminal, and the communication device obtains the processing capability of the roadside unit RSU communicating with the terminal according to the location information of the terminal, including: communication The device obtains the processing capability of the RSU from the RSU.

In a possible implementation manner, the communication device is deployed on a platform that provides services for the terminal, and the communication device obtains the network status of the candidate network, including: the communication device obtains the network status from the core network of the candidate network The network element obtains the network status of the candidate network.

In a possible implementation manner, the communication device is deployed on the terminal, and the method provided in the embodiment of the present application further includes: the communication device obtains the network status of the candidate network, including: the communication device according to the multiple candidate networks The network sends a second request message to the module of the terminal, where the second request message is used to query the network status of the multiple candidate networks. The communication device obtains the network status of the multiple candidate networks from the module.

In a possible implementation manner, the sender of the service message is the terminal, and the communication device is deployed on the terminal. Or the sender of the service message is the other device, and the communication device is deployed on a platform that provides services for the terminal.

In a possible implementation manner, the sender of the service message is another device, and the service message also includes the identification of the terminal. Therefore, the communication device in the embodiment of the present application can determine the identity of the terminal according to the service message.

In a possible implementation manner, the sender of the service message is a terminal, and the communication device is deployed in the terminal. Therefore, in the embodiment of the present application, the communication device may determine the identity of the terminal through an interface or configuration inside the terminal.

In a possible implementation manner, the method provided in the embodiment of the present application further includes: the communication device uses the target network to send service messages to the terminal or other devices.

Specifically, the communication device sends the service message to the access device corresponding to the target network, so that the access device corresponding to the target network sends the service message to the terminal or other devices.

In a second aspect, an embodiment of the present application provides a method for determining a communication network, including: a terminal receiving a service message transmitted by a communication device through a target network, the service message including a service identifier. Wherein, the target network is a network that meets the service requirements corresponding to the service among the networks of multiple candidate networks. The network to be selected is both a network corresponding to the network type supported by the terminal and a network corresponding to the network type configured by the communication device for the service. The terminal processes business messages.

In a possible implementation manner, the reliability of the service corresponding to the service identifier is lower than the first threshold, and the target network is the network corresponding to the RSU communicating with the terminal.

In a possible implementation manner, the delay of the service corresponding to the service identifier is lower than the second threshold, and the target network is a network whose network status meets the service requirements corresponding to the service identifier among multiple candidate networks, or the network corresponding to the RSU.

In a possible implementation manner, the bandwidth of the service corresponding to the service identifier is higher than the third threshold, or the reliability of the service corresponding to the service identifier is higher than the fourth threshold, and the target network is a network state among multiple candidate networks The network that meets the service requirements corresponding to the service identification and the network corresponding to the RSU.

In a possible implementation manner, the bandwidth of the service corresponding to the service identifier is higher than the third threshold, and the terminal receiving the service message transmitted by the communication device through the target network includes: the terminal receiving the communication device adopts the network status of multiple candidate networks to satisfy One or more message packets of the service message transmitted by the network corresponding to the service requirement and the network corresponding to the RSU. Each of the one or more message packets includes a second indication, the second indication is used to indicate the order of the message packets; the terminal processing the service message includes: the terminal reorganizes one or more according to the second indication of each message packet Message packets.

In a possible implementation manner, the reliability of the service corresponding to the service identifier is higher than the fourth threshold, and the terminal receiving the service message transmitted by the communication device through the target network includes: the terminal receiving the service message using multiple network states in the candidate network to satisfy the service Identify the service message of the network corresponding to the service requirement and the replication service message of the network corresponding to the RSU. The business message is copied and the time information is carried in the business message. The terminal processing business messages includes: the terminal prioritizes the processing of the business message and the copy of the time information in the business message. Or, the terminal determines that the distance between the time indicated by the time information of the service message and the time indicated by the time information of the duplicate service message is less than the preset interval, and then selects one of the duplicate service message and the service message for processing.

In a possible implementation manner, the communication device is located in the terminal, and the method further includes: the module in the terminal is further configured to receive a first request message, the first request message being used to request the processing capability of the RSU. The module in the terminal is also used to send RSU processing capabilities to the communication device. In a possible implementation manner, the communication device is located in the terminal, and the method further includes: a module in the terminal periodically receives the processing capability from the RSU according to a preset period.

It should be understood that the method executed by the terminal in the second aspect may also be executed by other devices. However, it should be noted that in the second aspect, when the method executed by the terminal is executed by another device, the steps of receiving the first request message and sending the processing capability of the RSU to the communication device may not be executed.

In the third aspect, this application provides a communication device that can implement the first aspect or any possible implementation of the first aspect, and therefore can also implement the first aspect or any possible implementation of the first aspect The beneficial effects in. The communication device may be a device applied in a platform, or a device applied in a terminal. The device can implement the above method by software, hardware, or by hardware executing corresponding software.

As an example, an embodiment of the present application provides a communication device, including: a communication unit that receives a service message, the service message is a service message for a terminal and other devices to communicate through the communication device, and the service message includes a service identifier And a first instruction, where the first instruction is used to instruct the communication device to plan a target network for transmitting the service message. The processing unit is configured to determine multiple candidate networks according to the terminal identifier and the service identifier; the candidate network is a network corresponding to the network type supported by the terminal and also belongs to the communication device. The network corresponding to the network type of the service configuration. The processing unit is further configured to determine a target network that satisfies the service requirements corresponding to the service according to the network status of the multiple candidate networks, and the target network is used to transmit the service message.

In a possible implementation manner, the communication unit in the embodiment of the present application is further configured to obtain the network status of the candidate network, and the network status is used to reflect the congestion level of the candidate network.

In a possible implementation manner, the communication unit is further configured to receive service configuration from the application server, the service configuration including any one or more of the following information of the service corresponding to the service identifier: service identifier, service Demand, or direction of transmission path. The processing unit is further configured to configure a network type that meets the service requirements for the service according to the service configuration.

In a possible implementation manner, when the network to be selected includes a network with a network type of PC5, the communication unit is further configured to obtain the roadside unit RSU communicating with the terminal according to the location information of the terminal Processing power. The processing unit is specifically configured to determine the target network for transmitting the service message according to the network status of the multiple candidate networks and the processing capability of the RSU.

In a possible implementation manner, the communication unit and the communication unit are also specifically configured to determine that the terminal supports the PC5 network and that the network type configured for the service includes the PC5 network, and obtain the data link according to the location information of the terminal The processing capability of the roadside unit RSU of the terminal communication.

In a possible implementation manner, the reliability of the service corresponding to the service identifier is lower than the first threshold, and the target network is the network corresponding to the RSU.

In a possible implementation manner, the delay of the service corresponding to the service identifier is lower than the second threshold, and the target network is the network whose network status meets the service requirements among the multiple candidate networks, or the RSU The corresponding network.

In a possible implementation manner, the delay of the service corresponding to the service identifier is lower than the second threshold, and the target network is a network in a variety of candidate networks whose network status meets the service requirements corresponding to the service identifier and the network in the network corresponding to the RSU The best network.

In a possible implementation manner, the bandwidth of the service corresponding to the service identifier is higher than the third threshold, or the reliability of the service corresponding to the service identifier is higher than the fourth threshold, and the target network is the multiple candidate The network in the network whose network status meets the service requirements corresponding to the service identifier and the network corresponding to the RSU.

In a possible implementation manner, the bandwidth of the service corresponding to the service identifier is higher than the third threshold, and the processing unit is further configured to generate one or more message packets of the service message according to the service message, and the one Each of the or multiple message packets includes a second indication, and the second indication is used to indicate the order of the message packets. The communication unit is further configured to transmit the one or more message packets to a terminal or other device using a network in which the network status of the multiple candidate networks meets the service requirements corresponding to the service identifier, and the network corresponding to the RSU.

In a possible implementation manner, the reliability of the service corresponding to the service identifier is higher than the fourth threshold, and is also used to perform a copy operation on the business message to obtain the copied business message. The communication unit is further configured to transmit the service message using a network in which the network status of the multiple candidate networks meets the service requirements corresponding to the service identifier, and use the network corresponding to the RSU to transmit the copy service message, so The copy service message and the service message also carry time information. This can provide transmission reliability.

In a possible implementation manner, the communication device is deployed in the terminal, and the communication unit is also used to send a first request message to a module of the terminal, and the first request message is used to request the processing capability of the RSU. The communication unit is also specifically used to receive the processing capability of the RSU from the module.

In a possible implementation manner, the communication device is deployed on a platform that provides services for the terminal, and the communication unit is specifically configured to obtain the processing capability of the RSU from the RSU.

In a possible implementation manner, the communication device is deployed on a platform that provides services for the terminal, and the communication unit is specifically configured to obtain information about the candidate network from a core network element in the candidate network. network status.

In a possible implementation manner, the communication device is deployed in the terminal, and the communication unit is further configured to send a second request message to the module of the terminal according to the multiple candidate networks, and the first The second request message is used to query the network status of the multiple candidate networks. The communication unit is also used to obtain the network status of the multiple candidate networks from the module.

In a possible implementation manner, the sender of the service message is a terminal, and the communication device is deployed in the terminal. Or the sender of the business message is other equipment, and the communication device is deployed on a platform that provides services for the terminal.

In a possible implementation manner, the sender of the service message is another device, and the service message also includes the identification of the terminal. Therefore, the processing unit in the embodiment of the present application can determine the identity of the terminal according to the service message.

In a possible implementation manner, the sender of the service message is a terminal, and the communication device is deployed in the terminal. Therefore, in this embodiment of the present application, the processing unit may determine the identity of the terminal according to the sender.

In a fourth aspect, the present application provides a communication device that can implement the second aspect or any possible implementation manner of the second aspect, and therefore can also implement the second aspect or any possible implementation manner of the second aspect The beneficial effects in. The communication device may be a terminal or a chip applied in the terminal. The device can implement the above method by software, hardware, or by hardware executing corresponding software.

In an example, the communication device includes: a communication unit configured to receive a service message transmitted by the communication device through a target network, the service message including a service identifier. Wherein, the target network is a network that meets the service requirements corresponding to the service among the networks of multiple candidate networks. The network to be selected is both a network corresponding to the network type supported by the terminal and a network corresponding to the network type configured by the communication device for the service. The processing unit is used to process business messages.

In a possible implementation manner, the bandwidth of the service corresponding to the service identifier is higher than the third threshold, and the communication unit is specifically configured to receive the network, where the communication device adopts a variety of network states in the candidate networks to meet the service requirements corresponding to the service identifier. One or more message packets of the service message transmitted by the network corresponding to the RSU; each of the one or more message packets includes a second indication, and the second indication is used to indicate the order of the message packets. Each of the one or more message packets includes a second indication, and the second indication is used to indicate the order of the message packets. The processing unit is specifically configured to reorganize one or more message packages according to the second instruction of each message package.

In a possible implementation manner, the reliability of the service corresponding to the service identifier is higher than the fourth threshold, and the communication unit is specifically configured to receive services from a network that uses a variety of network states in the candidate network to meet the service requirements corresponding to the service identifier The message and the replication service message of the network corresponding to the RSU, the replication service message and the service message carry time information. The processing unit is specifically configured to process, according to preset rules, network-transmitted service messages that use network states in multiple candidate networks to meet the service requirements corresponding to the service identifiers and service messages that use the network-transmitted service messages corresponding to the RSU.

In a possible implementation manner, the processing unit is specifically configured to preferentially process the business message and copy the time information of the business message at the top.

In a possible implementation manner, the processing unit is specifically configured to determine that the distance between the time indicated by the time information of the service message and the time indicated by the time information of the copy service message is less than the preset interval, then the copy service message and the service Any one of the messages is processed.

It should be understood that the method executed by the terminal in the second aspect may also be executed by other devices. However, it should be noted that in the fourth aspect, when the terminal execution method is executed by another device, the communication unit may not perform the steps of receiving the first request message and sending the processing capability of the RSU to the communication device.

In the fifth aspect, the embodiments of the present application provide a computer-readable storage medium. The computer-readable storage medium stores a computer program or instruction. When the computer program or instruction is run on a computer, the computer can execute operations as described in the first aspect to the first aspect. One aspect of the communication network determination method described in any one of the possible implementations.

In the sixth aspect, the embodiments of the present application provide a computer-readable storage medium. The computer-readable storage medium stores a computer program or instruction. When the computer program or instruction is run on a computer, the computer executes operations such as the second aspect to the first aspect. The communication network determination method described in any one of the possible implementations of the two aspects.

In a seventh aspect, the embodiments of the present application provide a computer program product including instructions. When the instructions are executed on a computer, the computer executes the communication network described in the first aspect or various possible implementations of the first aspect. Determine the method.

In an eighth aspect, this application provides a computer program product including instructions, which when the instructions run on a computer, cause the computer to execute the second aspect or the communication network determination method described in the various possible implementations of the second aspect .

In a ninth aspect, an embodiment of the present application provides a communication system, which includes any one or more of the following: the communication device described in the third aspect and various possible implementations, and the fourth aspect and the fourth aspect For the terminals and platforms described in various possible implementations, the communication device is deployed on the platform.

In a tenth aspect, an embodiment of the present application provides a communication system, which includes any one or more of the following: the communication device described in the third aspect and various possible implementation manners, the fourth aspect and the fourth aspect For the terminals and platforms described in various possible implementation manners, the communication device is deployed on the terminal.

In an eleventh aspect, an embodiment of the present application provides a communication device. The communication device includes one or more modules for implementing the methods of the first and second aspects. The one or more modules may be compatible with the first and second aspects. On the one hand, the steps in the method of the second aspect correspond to each other.

Any of the above-provided devices, computer storage media, computer program products, or communication systems are used to execute the corresponding methods provided above. Therefore, the beneficial effects that can be achieved can refer to the corresponding methods provided above The beneficial effects of the corresponding solutions will not be repeated here.

Description of the drawings

FIG. 1 is a schematic structural diagram of a communication system provided by an embodiment of this application;

FIG. 2 is a schematic structural diagram of another communication system provided by an embodiment of this application;

FIG. 3 is a schematic flowchart 1 of a method for determining a communication network provided by an embodiment of this application;

FIG. 4 is a second schematic flowchart of a method for determining a communication network provided by an embodiment of this application;

FIG. 5 is a schematic diagram of a target network transmitting service messages according to an embodiment of this application;

6 is a schematic diagram of another target network transmission service message provided by an embodiment of this application;

FIG. 7 is a schematic diagram of yet another target network transmission service message provided by an embodiment of this application;

FIG. 8 is a third schematic flowchart of a method for determining a communication network according to an embodiment of the application;

FIG. 9 is a schematic structural diagram of a communication device provided by an embodiment of this application;

FIG. 10 is a schematic structural diagram of another communication device provided by an embodiment of this application;

FIG. 11 is a schematic structural diagram of still another communication device provided by an embodiment of this application;

FIG. 12 is a schematic structural diagram of a chip provided by an embodiment of the application.

detailed description

In order to clearly describe the technical solutions of the embodiments of the present application, in the embodiments of the present application, words such as "first" and "second" are used to distinguish the same items or similar items that have substantially the same function and effect. For example, the first threshold and the second threshold are only for distinguishing different thresholds, and the sequence of them is not limited. Those skilled in the art can understand that the words "first" and "second" do not limit the quantity and order of execution, and the words "first" and "second" do not limit the difference.

It should be noted that in this application, words such as "exemplary" or "for example" are used to indicate examples, illustrations, or illustrations. Any embodiment or design solution described as "exemplary" or "for example" in this application should not be construed as being more preferable or advantageous than other embodiments or design solutions. To be precise, words such as "exemplary" or "for example" are used to present related concepts in a specific manner.

The network architecture and business scenarios described in the embodiments of this application are intended to more clearly illustrate the technical solutions of the embodiments of this application, and do not constitute a limitation on the technical solutions provided in the embodiments of this application. Those of ordinary skill in the art will know that with the network With the evolution of architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of the present application are equally applicable to similar technical problems.

In this application, "at least one" refers to one or more, and "multiple" refers to two or more. "And/or" describes the association relationship of the associated objects, indicating that there can be three relationships, for example, A and/or B, which can mean: A alone exists, both A and B exist, and B exists alone, where A, B can be singular or plural. The character "/" generally indicates that the associated objects are in an "or" relationship. "The following at least one item (a)" or similar expressions refers to any combination of these items, including any combination of a single item (a) or plural items (a). For example, at least one item (a) of a, b, or c can mean: a, b, c, ab, ac, bc, or abc, where a, b, and c can be single or multiple .

The technical solutions of the embodiments of this application can be applied to various communication systems, such as: code division multiple access (CDMA), time division multiple access (TDMA), frequency division multiple access (frequency division multiple access, TDMA) access, FDMA), orthogonal frequency-division multiple access (OFDMA), single carrier frequency-division multiple access (single carrier FDMA, SC-FDMA) and other systems. The term "system" can be replaced with "network". The CDMA system can implement wireless technologies such as universal terrestrial radio access (UTRA) and CDMA2000. UTRA can include wideband CDMA (WCDMA) technology and other CDMA variants. CDMA2000 can cover the interim standard (IS) 2000 (IS-2000), IS-95 and IS-856 standards. The TDMA system can implement wireless technologies such as the global system for mobile communication (GSM). The OFDMA system can implement features such as evolved universal wireless terrestrial access (UTRA, E-UTRA), ultra mobile broadband (UMB), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Flash OFDMA And other wireless technologies. UTRA and E-UTRA are UMTS and UMTS evolved versions. 3GPP is a new version of UMTS using E-UTRA in long term evolution (LTE) and various versions based on LTE evolution. The 5G communication system and the new radio (NR) are next-generation communication systems under study. In addition, the communication system may also be applicable to future-oriented communication technologies, all of which are applicable to the technical solutions provided in the embodiments of the present application.

The system architecture and business scenarios described in the embodiments of this application are intended to illustrate the technical solutions of the embodiments of this application more clearly, and do not constitute a limitation on the technical solutions provided in the embodiments of this application. Those of ordinary skill in the art will know that with the network With the evolution of architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of the present application are equally applicable to similar technical problems. In the embodiments of the present application, the method provided is applied to an NR system or a 5G network as an example for description.

Before introducing the embodiments of this application, firstly, the relevant terms involved in the embodiments of this application are explained as follows:

1) Downlink refers to the process in which the application server or platform sends service messages to the terminal through the communication device.

2) Uplink refers to the process in which the terminal sends service messages to the application server, other terminals or the platform through the communication device.

3). Network type. The network type mentioned in the embodiments of this application refers to the network type of the access network corresponding to various radio access technologies (RAT), such as LTE, 5G, and PC5 networks. , Narrow Band-Internet of Things (NB-IoT), 2G, 3G, WLAN, Bluetooth (Bluetooth) and other types of access networks. Among them, it should be noted that when the network type is the PC5 network, it specifically includes the PC5 interface under the LTE network and the PC5 interface under 5G. When it refers to network type LTE, it specifically refers to LTE-Uu; when it refers to network type 5G, it specifically refers to 5G-Uu. In the following introduction, for simplicity of description, only the PC5 interface, LTE, and 5G are described.

As shown in FIG. 1, FIG. 1 shows a communication system provided by an embodiment of the present application. The communication system includes: a terminal 10, an application server communicating with the terminal 10, and a communication network plan for the terminal 10 and the application server Service platform 40. A communication device 50 is deployed in the platform 40. The communication device 50 may be a logic module with processing functions in the platform 40. In the embodiment of the present application, the terminal 10 may communicate with the platform 40 through any one or more access devices 20 in at least one access mode. It should be understood that when the terminal 10 communicates with the platform 40 in multiple access modes through multiple access devices 20, the terminal 10 may also be regarded as a terminal in a dual-connection or multi-connection state. The terminal 10 may also have a first application communicating with an application server. For example, the first application may be in-vehicle software.

The terminal 10 is a device with wireless communication function, which can be deployed on land, including indoor or outdoor, handheld or vehicle-mounted. It can also be deployed on the water (such as ships, etc.). It can also be deployed in the air (for example, on airplanes, balloons, and satellites). The terminal is also called user equipment (UE), mobile station (MS), mobile terminal (mobile terminal, MT), and terminal equipment, etc., which provide users with voice and/or data connectivity. equipment. The terminal includes a vehicle with corresponding communication function, or an in-vehicle communication device, or other embedded communication device, and can also be a user's handheld communication device, including a mobile phone, a tablet computer, etc. At present, the terminal can be: mobile phone (mobile phone), tablet computer, notebook computer, palm computer, mobile internet device (MID), wearable device (such as smart watch, smart bracelet, pedometer, etc.), In-vehicle equipment (for example, cars, bicycles, electric vehicles, airplanes, ships, trains, high-speed rail, etc.), virtual reality (VR) equipment, augmented reality (AR) equipment, industrial control (industrial control) Wireless terminals, smart home equipment (for example, refrigerators, TVs, air conditioners, electricity meters, etc.), smart robots, workshop equipment, wireless terminals in self-driving, wireless terminals in remote medical surgery, and smart Wireless terminals in a smart grid, wireless terminals in transportation safety, wireless terminals in a smart city, or wireless terminals in a smart home, and flying equipment (e.g., smart Robots, hot air balloons, drones, airplanes, etc. In a possible application scenario of this application, the terminal device is a terminal device that often works on the ground, such as a vehicle-mounted device. In this application, for ease of description, chips deployed in the above devices, such as System-On-a-Chip (SOC), baseband chips, etc., or other chips with communication functions may also be referred to as terminals.

The access device 20 may also be referred to as a wireless access device or a network device. For example, the terminal is connected to a radio access network (RAN) node of the wireless network. At present, some examples of access equipment are: The Next Generation Node B (gNB), the transmission reception point (TRP), the evolved Node B (eNB), and the wireless network control Radio network controller (RNC), node B (Node B, NB), base station controller (BSC), base transceiver station (base transceiver station, BTS), home base station (for example, home evolved NodeB), or home Node B, HNB), baseband unit (BBU), or WIFI access point (AP), etc. In a network structure, a network device may include a centralized unit (CU) node, or a distributed unit (DU) node, or a RAN device including a CU node and a DU node. The access device can also be a wireless backhaul device, a vehicle-mounted device, a wearable device, and a network device in a future 5G network or a network device in a future evolved PLMN network.

Exemplarily, the terminal 10 may communicate with the platform 40 through a 3rd Generation Partnership Project (3rd Generation Partnership Project, 3GPP) access technology or a non-3rd Generation Partnership Project (non 3rd Generation Partnership Project, non3GPP) access technology.

For example, the 3GPP access technology may be an access technology adopted in a long term evolution (LTE) (also referred to as 4G) system, a 2G system, a 3G system, or a 5G system. The access network adopting 3GPP access technology is called Radio Access Network (RAN). For example, the terminal 10 may use 3GPP access technology to access the network through an access device in a 2G, 3G, 4G or 5G system. The non-3GPP access technology can be an untrusted non3GPP access technology or a trusted non3GPP access technology. Non-3GPP access technologies can include: wireless fidelity (Wi-Fi), worldwide interoperability for microwave access (WiMAX), code division multiple access (CDMA), wireless local area network ( Wireless Local Area Networks, WLAN), fixed network technology or wired technology, etc. The terminal 10 may access the network through an air interface technology represented by wireless fidelity (Wireless Fidelity, WIFI). Among them, the access device in non-3GPP may be an access point (access Point, AP).

Exemplarily, the platform 40 in the embodiment of the present application may be a server deployed on the cloud. Or the platform 40 may be an edge platform. For example, the edge platform may be a server deployed close to the terminal.

In a possible implementation, the communication system shown in FIG. 1 further includes: one or more terminals that communicate with the terminal 10, such as a road side unit (RSU) 60, or other terminals. There is a first interface between the terminal 10 and each of the one or more roadside units 60. The interface between the terminal 10 and one or more access devices 20 may be referred to as a second interface. It should be understood that the terminal 10 may also communicate with the platform 40 through one or more roadside units 60.

For example, the first interface may be a PC5 interface. The PC5 interface uses a dedicated frequency band for the Internet of Vehicles (such as 5.9 GHz). For example, the second interface may be a Uu interface in a 3G network, a 5G network, a 4G network, or NB-IoT, using a cellular network frequency band (such as 1.8 GHz). The second interface may be a Um interface in a 2G network. The names of the first interface and the second interface described above are only examples, and the embodiments of the present application do not limit the names of the first interface and the second interface.

In the embodiment of the present application, the terminal 10 and the roadside unit 60 may transmit vehicle to everything (V2X) services. For example, the terminal 10 and the roadside unit 60 can transmit their own vehicle speed, driving direction, specific location, whether the emergency brake is stepped on, whether it is necessary to overtake and other safety information between each other.

Exemplarily, taking the terminal 10 as a vehicle as an example, the platform 40 in the embodiment of the present application may formulate a strategy for the terminal 10 according to the security information sent by the terminal 10. For example, if the terminal 10 passes through one or more access devices 20 or RSU 60 Send an overtaking request to the platform 40. The platform 40 may return the overtaking strategy information to the terminal 10 through one or more access devices 20 or RSU 60. For example, the overtaking strategy information may include: how many cars are there before the terminal 10, how far it needs to travel to merge and so on. The application server is used to send service messages to the terminal 10, or the application server is used to receive service messages from the terminal 10. The service message includes a service identifier, and the service identifier is used to determine the service and the service type to which the service belongs. Exemplarily, the services and service types in the embodiments of the present application may be as shown in Table 1 below:

Table 1 Business configuration

As shown in FIG. 2, FIG. 2 shows another communication system provided by an embodiment of the present application. The difference between the communication system and FIG. 1 is that the communication device 50 is located in the terminal 10 in FIG. 2. It should be understood that the solutions shown in FIG. 1 and FIG. 2 can be combined, that is, in the communication system shown in FIG. 1 or FIG. 2, the terminal 10 and the platform 40 can simultaneously integrate the communication device 50 described in this application. Features available.

As shown in FIG. 3, FIG. 3 shows a schematic flowchart of a method for determining a communication network provided by an embodiment of the present application. It should be noted that the method shown in FIG. 3 is applicable to both the uplink message flow and the downlink message flow. For the uplink message flow, the communication device described in the method is deployed on the terminal, as shown in the architecture shown in FIG. 2; for the downlink message flow, the communication device described in the method is deployed on the platform, as shown in the architecture shown in FIG. The method includes:

Step 101: The communication device receives a service message, where the service message is a service message for the terminal and other devices to communicate through the communication device. The service message includes the service identifier and the first indication. The first indication is used to instruct the communication device to plan a target network for transmitting service messages.

Exemplarily, the service identifier can be used to determine the service and the service type to which the service belongs. For example, the communication device has the service configuration shown in Table 1, so after the communication device determines the service according to the service identifier, it can determine the service type and service requirements of the service in combination with Table 1.

Step 102: The communication device determines a variety of candidate networks according to the terminal identification and service identification.

Wherein, the network to be selected is the intersection of the network supported by the terminal and the network configured by the service, that is, the network to be selected belongs to both the network corresponding to the network type supported by the terminal and the network corresponding to the network type configured for the service by the communication device.

As an example, step 102 in the embodiment of the present application can be implemented in the following manner: the communication device determines the network corresponding to one or more network types supported by the terminal according to the identification of the terminal, and then obtains the network from one or more network types supported by the terminal. Select the network corresponding to the network type configured for the service from the network corresponding to the network type.

For example, the communication device determines that the network supported by the terminal is 3G, 4G, and 5G according to the identification of the terminal, and the network corresponding to the network type of the service configuration is 4G and 5G, the communication device determines that the multiple candidate networks are 4G and 5G.

Or, as another example, step 102 in the embodiment of the present application can be implemented in the following manner: the communication device determines the network corresponding to the network type configured for the service according to the service identifier, and then selects the network type configured for the service. Among the corresponding networks, the network corresponding to one or more network types supported by the terminal is selected as multiple candidate networks.

Exemplarily, the identifier of the terminal in the embodiment of the present application may be any one or more of the following identifiers: Internet protocol address (IP), subscription permanent identifier (SUPI), permanent device identifier (permanent device identifier) equipment identifier (PEI), generic public subscription identifier (GPSI), international mobile subscriber identifier (IMSI), international mobile equipment identity (IMEI), IP address and mobile Taiwan International Integrated Service Digital Network Number (mobile station international integrated service digital network number, MSISDN). In the following embodiments, all the identifications related to the terminal can be referred to the description here, and will not be repeated in the following.

It should be understood that, in a scenario where the recipient of the service message is a terminal, the service message is a downlink message sent to the terminal, and the service message contains the identification of the terminal, and the communication device can obtain the identification of the terminal from the service message. In the case where the service message is sent by the terminal to other devices, the service message is an uplink message originated by the terminal, and the communication device is integrated in the terminal, and the communication device can determine the identity of the terminal through the internal interface or configuration of the terminal.

It should be noted that if the terminal supports multiple candidate network types, the communication device can determine the network status of the network corresponding to each network type according to high bandwidth and low delay.

Exemplarily, the network status in the embodiment of the present application may be the received signal strength (RSS) of the network, which may be simply referred to as the signal strength or the congestion level of the network. The congestion level of the network is used to reflect the congestion level of the network. For example, the congestion level of the network may include any one or more of the following: the network is not congested, lightly congested, or heavily congested. For example, the signal strength may be any one or more of radio signal received power (RSRP), radio signal received quality (RSRQ), and received signal strength indicator (RSSI). One.

The signal strength in the embodiments of the present application can be measured by high, medium, and low. For example, if the signal strength of the network is between -50dbm-0dbm, it means that the signal of the network is very good and can meet the basic use, and the signal strength can be considered high. If the signal strength of the network is less than or equal to -50dbm, it can be considered that the signal of the network is normal, and it can be considered that the signal strength is medium.

Exemplarily, when the network type is 2G/3G/4G/NB-Uu, the high bandwidth may be 80% of the theoretical value. For example, when the network type is 2G-GSM, the theoretical value of the uplink/downlink bandwidth may be 9.6K /14.4K. For example, when the network type is 3G-CDMA, the theoretical value of the uplink/downlink bandwidth can be 1.8M/3.1M. When the network type is 3G-WCDMA, the theoretical value of the uplink/downlink bandwidth can be 5.76M/7.2M. When the network type is 4G-LTE, the theoretical value of the uplink/downlink bandwidth can be 50M/100M. When the network type is NB-IoT, the theoretical value of the downlink rate can be: greater than 160kbps and less than 250kbps. The theoretical value of the uplink rate may be greater than 160 kbps and less than 250 kbps.

Exemplarily, when the network type is 2G/3G/4G/NB, the low delay can be understood as: less than or equal to the theoretical delay value of various network types×110%. For example, when the network type is 2G, the theoretical delay value can be 1s. When the network type is 3G, the theoretical delay value can be 600ms. When the network type is 4G, the theoretical delay value can be 100ms. When the network type is NB, the theoretical delay value is 10s.

Step 103: The communication device determines a target network that meets the service requirements corresponding to the service according to the network status of the multiple candidate networks. Among them, the target network is used to transmit business messages.

It should be noted that the target network in the embodiment of the present application may be one or more candidate networks that meet service requirements among multiple candidate networks. It should be understood that if the target network is two or more candidate networks that meet service requirements among multiple candidate networks, it can be understood that the service message is transmitted using multiple communication paths. For a specific description of multi-communication path transmission, reference may be made to the following embodiments, which will not be repeated here.

In a possible embodiment, the target network in the embodiment of the present application is one or more candidate networks whose network status meets the service requirements corresponding to the service identifier among multiple candidate networks. Or the target network is the network with the highest priority among multiple candidate networks.

Since services of different service types correspond to different service requirements, combining the service requirements of the service and the network status of the candidate network to determine the target network for transmitting service messages can make the target network meet the service transmission requirements.

It is understandable that after the communication device in the embodiment of the present application determines the target network, the target network may be used to transmit service messages to the terminal or other devices. Specifically, the communication device sends the service message to the access device corresponding to the target network (for example, the base station or RSU), so that the access device corresponding to the target network sends the service message to the terminal or other devices.

Exemplarily, the service requirement may refer to the quality of service (Quality of Service, QoS) that needs to be met when the service is transmitted. For specific business requirements, please refer to the description in Table 1, which will not be repeated here.

Exemplarily, if the service requirement is ultra-high reliability, the target network is the network with the best network status among multiple candidate networks. Or the target network is a network in which the network status of multiple candidate networks can ensure high reliable transmission of services. For example, if the 4G network and the 5G network supported by the terminal are heavily congested, and the 5G network is lightly congested, the communication device may determine that the target network is a 5G network. Or the target network is a network in which the network status of multiple candidate networks can ensure that the service meets the low-latency transmission. Or the target network is a network in which the network status of multiple candidate networks can ensure that the service meets the high bandwidth transmission.

Exemplarily, if the service requirement is low reliability, the target network is the network with the lowest network status among the multiple candidate networks.

It should be noted that the target network may be one network in which the network status of the multiple candidate networks meets the service requirements corresponding to the service identifier, or it may be multiple networks. For example, for low-reliability services, the communication device may determine to use one or more network states in the candidate network to transmit a service message that meets the service requirements corresponding to the service identifier. For a high-reliability service communication device, it may be determined to use multiple network transmission service messages in multiple candidate networks whose network status meets the service requirements corresponding to the service identifier.

Exemplarily, the network status of the network is measured by RSRP, and the networks corresponding to each network type supported by the terminal are NB-IoT and GSM. Where the RSRP value of NB-IoT is greater than the RSRP value of GSM, the communication device can determine to use NB-IoT to transmit service messages.

Based on the outline method process shown in Fig. 3, the following takes Fig. 4 and Fig. 8 as examples to further describe the downlink and uplink message sending processes provided by the embodiments of the present application.

The following behavior example in FIG. 4, that is, the sender of the business message is an application server or platform, and the receiver of the business message is a terminal, as an example, introduces the method provided by the embodiment of the present application. The method includes: step 407, step 408, and step 411. Among them, step 407, step 408 and step 411 refer to step 101, step 102 and step 103 in the above-mentioned embodiment respectively, and will not be repeated here.

In the downlink message flow shown in Figure 4, the service message sent by the platform to the terminal can be a self-generated service message, or it can only forward a service message sent to the terminal by other devices. When the business message sent by the platform to the terminal is a business message generated by the platform itself, the communication device in the platform receives the business message from other logical units in the platform. When the service message sent by the platform to the terminal is a message received from another application server, the method provided in this embodiment of the present application further includes before step 407:

Step 406: The other device (for example, an application server) sends a service message to the communication device.

Correspondingly, step 407 in the embodiment of the present application can be specifically implemented in the following manner: the communication device receives the business message from the application server. In the embodiments of the present application, the following behavior examples are described in FIGS. 3 and 4.

It should be noted that, when the receiver of the service message is a terminal, the service message also needs to carry the identity of the terminal. That is, the service message in step 406 includes: the first indication, the identification of the terminal, and the service identification.

The first indication in the service message in the embodiment of this application is optional. For example, the first indication may be a commIndication identifier. If the service message does not carry the first indication, the service message is used to instruct the communication device to randomly select a communication network for transmitting the service message. Of course, it can also be understood that, if the service message carries the first indication, the service message is used to instruct the communication device to select the communication network for transmitting the service message according to the specific implementation of the following step 411.

In an optional embodiment, as shown in FIG. 4, the method provided in this embodiment of the present application may further include after step 411:

The communication device uses the target network to transmit service messages;

The terminal receives the service message transmitted by the communication device through the target network. The target network is a network that meets the service requirements corresponding to the service among the network states of multiple candidate networks;

The terminal processes business messages.

In a possible implementation, if the reliability of the service corresponding to the service identifier is lower than the first threshold, the communication device may use the target network to transmit the service message through the following step 4121: the terminal may receive the service message transmitted by the communication device through the target network. Realized through step 4131. The terminal can process the service message through step 4141.

In another possible implementation manner, if the bandwidth of the service corresponding to the service identifier is higher than the third threshold, the communication device may use the target network to transmit the service message through the following steps 4122 and 4123: the terminal receives the communication device transmitted through the target network The business message can be implemented through step 4132. The terminal can process the service message through step 4142.

In another possible implementation manner, for a service whose service identifier indicates that the reliability of the service is higher than the fourth threshold, the communication device uses the target network to transmit the service message can be implemented by the following step 4124: the terminal receives the service transmitted by the communication device through the target network The message can be implemented through step 4133. The terminal can process the service message through step 4143.

Specifically, for the implementation of step 4121, step 4123, step 4122, step 4124, step 4131, step 4132, or step 4133, step 4141, step 4142, or step 4143, please refer to the description in the following embodiments, which will not be repeated here. .

It should be understood that step 4131, or step 4132, or step 4133, step 4142, or step 4143 and the following embodiments are described by taking a terminal as an example. The terminal receives a service message and processes the service message, if the service message is received by another device , The steps performed by other devices can refer to the steps performed by the terminal, but when other devices process business messages, the terminal is replaced by other devices as the main body of execution in the terminal processing process, which will be explained here and will not be repeated in the following .

As shown in Figure 4, in a possible embodiment of the present application, the method provided in the embodiment of the present application further includes before step 411:

Step 409: The communication device obtains the network status of the network to be selected, and the network status is used to reflect the congestion level of the network to be selected.

As shown in Figure 4, in a possible embodiment of the present application, when the network to be selected includes a network with a network type of PC5, the method provided in this embodiment of the present application further includes before step 411:

Step 410: The communication device obtains the processing capability of the RSU communicating with the terminal according to the location information of the terminal.

When the communication device is deployed on a platform that provides services for the terminal, step 410 in the embodiment of the present application may be specifically implemented in the following manner: the communication device obtains the processing capability of the RSU from the RSU. Specifically, the communication device sends a query request message to the RSU, and the query request message is used to request the processing capability of the RSU. The communication device receives a query response message from the RSU, and the query response message includes the processing capability of the RSU.

It should be understood that the RSU communicating with the terminal may include one or more RSUs. If the communication device determines that there are multiple RSUs communicating with the terminal, the communication device needs to obtain the processing capability of each of the multiple RSUs. Of course, the communication device may also select at least one RSU whose distance to the terminal is less than or equal to a preset distance from multiple RSUs according to the location information of the terminal. The embodiment of the present application does not limit the size of the preset distance.

It is understandable that step 410 in the embodiment of the present application can be implemented in the following manner: the communication device determines that the terminal supports the PC5 network and the network type configured for the service includes the PC5 network, and the communication device obtains information about the communication with the terminal according to the location information of the terminal. The processing capacity of the roadside unit RSU. That is, when the terminal supports the PC5 network and the service supports the PC5 network, the communication device obtains the processing capability of the roadside unit RSU communicating with the terminal.

In addition, the communication device can also determine the congestion level of the PC5 interface supported by the terminal. If the communication device determines that the PC5 interface supported by the terminal is heavily congested, even if the terminal supports the PC5 interface, the communication device may not acquire the processing capability of the RSU communicating with the terminal. This can prevent the PC5 interface from being heavily congested, and the use of RSU to send service messages reduces the transmission reliability. In addition, if the PC5 interface is in a heavily congested state, the processing capacity of the RSU is not obtained, which can also reduce the processing burden of the communication device. If the communication device determines that the congestion level of the PC5 interface is lower than the preset congestion level and the network type configured for the service includes the PC5 network, the communication device determines to acquire the processing capability of the RSU communicating with the terminal.

The processing capacity of the RSU can also refer to the congestion level of the RSU. For the congestion level of the RSU, please refer to the description of the network congestion level, which will not be repeated here.

Correspondingly, as shown in FIG. 4, step 411 can be specifically implemented in the following manner: the communication device determines the target network for transmitting the service message according to the network status of the multiple candidate networks and the processing capability of the RSU.

As an example 1, the reliability of the service corresponding to the service identifier is lower than the first threshold, and the target network is the network corresponding to the RSU. As shown in Figure 4, step 4121 and step 4131 in the embodiment of the present application can be implemented in the following ways:

Step 4121, the communication device uses the network corresponding to the RSU to transmit the service message, and the reliability of the service corresponding to the service identifier in the service message is lower than the first threshold. Correspondingly, in step 4131, the terminal receives the service message transmitted by the network corresponding to the RSU. Step 4141, the terminal processes the service message transmitted by the network corresponding to the RSU.

In the embodiment of the present application, the reliability of the service being lower than the first threshold may also be described as: the reliability requirement of the service is less than or equal to the first threshold. In the embodiment of the present application, the service whose service reliability is lower than the first threshold is referred to as a low-reliability service. The embodiment of the present application does not limit the first threshold.

For example, if the low-reliability service is the traffic signal light boarding or traffic status broadcast shown in Table 1, the communication device may preferentially use RSU to transmit service messages to the terminal or other equipment. For the uplink, the terminal transmits the business message carrying the traffic signal on the car to the RSU, and the RSU transmits the business message carrying the traffic signal on the car to other devices. For downlink, the communication device transmits the business message carrying the traffic signal on the car from other equipment to the RSU, and the RSU transmits the business message carrying the traffic signal on the car to the terminal.

As another example, step 411 in the embodiment of the present application can be implemented in the following manner: the delay of the service corresponding to the service identifier is lower than the second threshold, and the target network is the network status of the multiple candidate networks that meets the service identifier corresponding The network corresponding to the business requirement or the network corresponding to the RSU.

Specifically, for a service whose delay of the service corresponding to the service identifier is lower than the second threshold, the method for the communication device to determine the target network can be implemented with reference to the following mode 1 to mode 4:

Manner 1. The target network is the network whose network status meets the service requirements corresponding to the service identifier among multiple candidate networks and the network corresponding to the RSU has the best network status.

Manner 2: The communication device selects a network from among multiple candidate networks whose network status meets the service requirements corresponding to the service identifier and the network corresponding to the RSU as the target network.

Manner 3: The communication device can combine the congestion level of the PC5 interface and the congestion level of the Uu interface to select a target network from among multiple candidate networks whose network status meets the service requirements corresponding to the service identifier and the network corresponding to the RSU.

For example, if the communication device determines that the congestion level of the PC5 interface is severe congestion and the congestion level of the Uu interface is moderate congestion, the target network Uu interface corresponds to the network.

It should be understood that when combining the congestion level of the PC5 interface and the congestion level of the Uu interface, if the congestion level of the PC5 interface and the congestion level of the Uu interface are the same, the communication device can be randomly selected, which is not limited in the embodiment of the application.

Manner 4: The target network is a network whose network status meets the service requirements corresponding to the service identifier among multiple candidate networks and the network with the highest priority among the networks corresponding to the RSU. That is, the network whose network status meets the service requirement corresponding to the service identifier and the network corresponding to the RSU respectively correspond to a priority.

In the embodiment of the present application, the service whose service delay is lower than the second threshold is referred to as a low-latency service. Low-latency services can refer to services that do not require high latency. In the embodiment of the present application, the service whose service delay is lower than the second threshold may also be described as: the service delay requirement is less than or equal to the second threshold.

For example, a low-latency service can be a remote control command for autonomous parking. If the network status of the target network is better than that of the RSU, then for the uplink, the terminal transmits the service message carrying the remote control command for autonomous parking to the access device corresponding to the target network, and the access device corresponding to the target network will The service message carrying the remote control command for autonomous parking is transmitted to other devices. For downlink, the communication device transmits the business message carrying the remote control command for autonomous parking to the access device corresponding to the target network, and the access device corresponding to the target network transmits the business message carrying the remote control command for autonomous parking to the terminal .

As another example 2 of the present application, step 411 in the embodiment of the present application is implemented in the following manner: the bandwidth of the service corresponding to the service identifier is higher than the third threshold, or the reliability of the service corresponding to the service identifier is higher than the fourth threshold. Threshold, the target network is a network whose network status meets the service requirements corresponding to the service identifier among multiple candidate networks, and the network corresponding to the RSU.

In the embodiment of the present application, a service whose service bandwidth is higher than the third threshold may be referred to as a high-bandwidth service. Services with service reliability higher than the fourth threshold are called ultra-high reliability services. The bandwidth of the service higher than the third threshold can also be described as: the bandwidth demand of the service is greater than or equal to the third threshold. The reliability of the service higher than the fourth threshold can also be described as: the reliability requirement of the service is greater than or equal to the fourth threshold. For example, the ultra-high reliability service may be an ultra-reliable low latency communication (ultra-reliable low latency communication, URLLC) service.

It should be noted that, for a service whose bandwidth of the service corresponding to a service identifier is higher than the third threshold, or a service whose reliability of the service corresponding to a service identifier is higher than the fourth threshold, the target network may also be a network among multiple candidate networks Two or more networks whose status meets the service requirements corresponding to the service identification. That is, for high-bandwidth services or ultra-high-reliability services, the target network for transmitting service messages can not only be composed of a variety of candidate networks whose network status meets the service requirements corresponding to the service identifier, and the network corresponding to the RSU, but also It is composed of two or more networks whose network status meets service requirements among multiple candidate networks. Of course, the target network for transmitting service messages may also be a combination of networks corresponding to multiple RSUs communicating with the terminal.

In the embodiment of the present application, a manner of selecting two or more networks from multiple candidate networks and/or networks corresponding to RSUs as target networks may be referred to as multi-communication path transmission. It should be understood that if the communication device uses multiple communication paths to transmit service messages, the terminal or other equipment can receive the service messages on the multiple communication paths determined by the communication device.

As shown in FIG. 5, for example, if the target network for multi-communication path transmission among multiple candidate networks is finally determined to be a 4G network and a 5G network, the communication device may determine to use the 4G network and the 5G network to transmit service messages to the terminal.

As shown in FIG. 6, for example, the communication device finally determines that the target network for multi-communication path transmission is the 4G network and the network corresponding to the RSU according to the processing capabilities of multiple candidate networks and the RSU, then the communication device can determine that the 4G network and the RSU correspond to The network transmits business messages to the terminal.

As shown in FIG. 7, for example, the communication device finally determines that the target networks for multi-communication path transmission are RSU1 and RSU2, and the communication device uses RSU1 and RSU2 to transmit service messages to the terminal.

As a specific implementation of Example 2: For a service whose service identifier indicates that the bandwidth of the service is higher than the third threshold, as shown in FIG. 4, steps 4122 and 4123 provided in this embodiment of the present application can be implemented in the following ways:

Step 4122, the communication device generates one or more message packets of the business message according to the business message. Each of the one or more message packets includes a second indication, and the second indication is used to indicate the order of the message packets.

The second indication in the embodiment of the present application is used by the terminal or other devices to determine whether the received message packet is complete.

Step 4123: The communication device transmits one or more message packets to the terminal or other equipment using a network whose network status meets the service requirements corresponding to the service identifier and the network corresponding to the RSU in the multiple candidate networks. It should be understood that, for the uplink communication apparatus, step 4123 sends service messages to other devices. For the communication step 4123 of the downlink communication device, a service message is sent to the terminal.

That is, the one or more data packets are jointly transmitted to the terminal by the network whose network status meets the service requirements corresponding to the service identifier in the multiple candidate networks and the network corresponding to the RSU.

For example, if one or more message packages include message package 1-message package 5, message package 1-message package 3 can use a variety of network transmissions in which the network status in the candidate network meets the service requirements corresponding to the service identifier, message package 4 and The message packet 5 can be transmitted using the network corresponding to the RSU.

Correspondingly, as shown in FIG. 4, step 4132 in the embodiment of the present application can be specifically implemented in the following manners: step 4132, the terminal receiving the communication device adopts a network that meets the service requirements corresponding to the service identification by the network status in a variety of candidate networks, and One or more message packets of the service message transmitted by the network corresponding to the RSU.

Correspondingly, as shown in FIG. 4, step 4142 in the embodiment of the present application can be specifically implemented in the following manner: the terminal reorganizes one or more message packets according to the second instruction of each message packet. It should be understood that the terminal can reorganize one or more message packets after determining that it has received one or more complete message packets.

As another specific implementation of Example 2: For a service whose service identifier indicates that the reliability of the service is higher than the fourth threshold, as shown in FIG. 4, step 4124 provided in the embodiment of the present application can be implemented in the following ways:

Step 4124: The communication device transmits the service message using a network whose network status in the multiple candidate networks meets the service requirements corresponding to the service identifier, and uses the network corresponding to the RSU to transmit the copy service message, and the copy service The message and the service message also carry time information. It can be understood that, before step 4124, it further includes: the communication device performs a copy operation on the business message to obtain the copied business message.

It should be understood that, for the uplink communication apparatus, step 4124 sends service messages to other devices. For downlink transmission, the communication device sends a service message to the terminal through step 4124. It should be understood that for a service where the service identifier indicates that the reliability of the service is higher than the fourth threshold, the communication device can copy the service message and transmit the source service message through a network that meets the service requirements corresponding to the service identifier in a variety of candidate networks. , The replication service message is transmitted through the network corresponding to the RSU. The other source business messages are the same as the copied business messages.

Alternatively, the communication device transmits the source service message through a network corresponding to one RSU, and transmits the duplicate service message through a network corresponding to another RSU. Or the communication device may transmit the source service message through one of the multiple candidate networks that meets the service requirements, and transmit the duplicate service message through another one of the multiple candidate networks that meets the service requirements.

Correspondingly, step 4133 may specifically be implemented in the following manner: the terminal receives service messages of a network that uses multiple candidate networks to meet the service requirements corresponding to the service identifier and uses the network corresponding to the RSU. Step 4143 can specifically be implemented in the following manner: the terminal preferentially processes the service messages transmitted by the network using the network status of the multiple candidate networks to meet the service requirements and the service messages with the earlier time information among the copy service messages transmitted by the network corresponding to the RSU. Or, the terminal preferentially processes the service messages transmitted by the network in which the network status of the multiple candidate networks meet the service requirements, and the service messages with the later time information among the copy service messages transmitted by the network corresponding to the RSU.

For example, the time information in the copy service message indicates time 1, and the time information in the service message indicates time 2, and when time 1 is earlier than time 2, the terminal preferentially processes the copy service message.

Or, step 4143 can be specifically in the following manner: the terminal determines the time indicated by the time information of the network transmission service message that uses the network status in the multiple candidate networks to meet the service requirements corresponding to the service identification and the network transmission replication service corresponding to the RSU If the interval between the times indicated by the time information in the message is less than the preset interval, the communication device selects from the service messages transmitted by the network that meets the service requirements using the network states in the multiple candidate networks and the copy service messages transmitted by the network corresponding to the RSU Choose one.

If the service message carries time information, the terminal or other device makes a decision according to the service identifier in the service message. For example, a), the terminal or other equipment preferentially processes the services with the earlier time information, and discards the services with the later time information. b) The terminal or other equipment waits for the service messages in different communication networks to be received, to ensure that the time information of the two service messages are within a certain time range, and then process the service messages respectively received through different communication networks .

Exemplarily, for ultra-high reliability services, such as ADAS car control commands, the communication device simultaneously sends the same ADAS control car carrying the same ADAS control car to the network whose network status meets the service requirements corresponding to the service identifier in the multiple candidate networks and the network corresponding to the RSU The business message of the command, in addition, the business message carries time information.

In a possible embodiment, the communication device is deployed on a platform that provides services for the terminal. Step 409 in the embodiment of the present application can be specifically implemented in the following manner: the communication device downloads from the core network of the candidate network Obtain the network status of the network to be selected from the element.

In a possible implementation manner, step 107 in the embodiment of the present application may be specifically implemented in the following manner: the communication device determines the access device accessed by the terminal. The communication device sends a network status request (Network Status Request) message to the core network network element through an application programming interface (Application Programming Interface, API). The core network element sends a network status response (Network Status Response) message to the communication device. Among them, the network status request message is used to request the network status of multiple candidate networks. For example, the network status request message can carry information about multiple networks to be selected. The network status response message can carry the network status of multiple networks to be selected.

Exemplarily, the core network network element may be a network element in the core network accessed by the access device. For example, in a 4G network, the core network element may be a service capability exposure function (SCEF) network element. In a 5G network, the core network element may be a network exposure function (NEF) network element.

As another possible embodiment of the present application, as shown in FIG. 4, the method provided in the embodiment of the present application further includes before step 406:

Step 404: The communication device receives the service configuration from the application server, where the service configuration includes any one or more of the following information of the service corresponding to the service ID: service ID, service requirement, or transmission path direction.

Specifically, the content of the service configuration can refer to the description in Table 1.

Step 405: The communication device configures a network type that meets the service requirements for the service according to the service configuration. The details are shown in Table 2:

Table 2 Configure the network types that each service may support

It should be noted that, regardless of whether the communication device is deployed on the terminal or the platform, the communication device in the embodiment of the present application may also be used to perform step 404 and step 405.

In a possible embodiment, as shown in FIG. 4, the method provided in this embodiment of the present application before step 407 further includes:

Step 401: The terminal registers to one or more networks supported by the terminal. Specifically, the process of registering the terminal to the network can refer to the description in the prior art, which will not be repeated here.

Step 402: The RSU registers to one or more networks supported by the RSU. Specifically, the process of RSU registration to the network can refer to the description in the prior art, which will not be repeated here.

Step 403: The terminal registers with the platform, and carries the network type registered by the terminal, the current mobile state of the terminal, and the network type supported by the terminal. The terminal reports its own signal strength. At the same time, the communication device maintains the communication network of the terminal, including the current network type of the terminal, the supported communication mode (PC5 interface/Uu interface), IP address and port number, the corresponding SIM card ID, and the corresponding network communication ID IMSI/MSISDN/externalID . For example, as shown in Table 3:

Table 3 Communication network of terminal maintained by communication device

For the uplink, combined with the architecture shown in FIG. 2, as shown in FIG. 8, FIG. 8 shows a schematic flowchart of a communication network determination method provided by an embodiment of the present application. For the same place in FIG. 8 and FIG. 4 The description of, may refer to each other for specific reference, and will not be repeated in the embodiment of this application. As shown in Figure 8, the method provided by the embodiment of the present application includes:

Step 908, step 909, and step 912. Among them, step 908 is the same as the description in step 101, step 909 is the same as the description in step 102, and step 912 is the same as the description in step 103. For details, please refer to the description in relevant places, and the details are not repeated here.

In an optional implementation manner, the following steps may be further included in FIG. 8:

The communication device uses the target network to transmit service messages;

Other equipment (for example, an application server or platform) receives the business message transmitted by the communication device through the target network. The target network is a network that meets the business requirements corresponding to the business among the network states of multiple candidate networks;

Other devices process business messages.

In a possible implementation manner, if the reliability of the service corresponding to the service identifier is lower than the first threshold, the communication device uses the target network to transmit the service message can be achieved through the following step 9131: other devices receive the service message transmitted by the communication device through the target network This can be achieved through step 9141. The processing of service messages by other devices can be implemented through step 9151.

In another possible implementation manner, if the bandwidth of the service corresponding to the service identifier is higher than the third threshold, the communication device uses the target network to transmit the service message can be implemented through the following steps 9132 and 9133: other devices receive the communication device to transmit via the target network The business message of can be implemented through step 9142. The processing of service messages by other devices can be implemented in step 9152.

In yet another possible implementation manner, for a service whose service identifier indicates that the reliability of the service is higher than the fourth threshold, the communication device adopts the target network to transmit the service message can be implemented by the following step 9134: other equipment receives the communication device transmitted through the target network The business message can be implemented through step 9143. The processing of service messages by other devices can be implemented in step 9153.

Among them, step 9131 can refer to the description in step 4121, step 9141 can refer to the description in step 4131, and step 9151 can refer to the description in step 4141. Step 9132 can refer to step 4122, step 9133 can refer to step 4123, step 9142 can refer to step 4132, step 9152 can refer to the related description in step 4142, step 9134 can refer to step 4124, step 9143 can refer to step 4133, step 9153 can refer to The description in step 4143 will not be repeated here. However, it should be noted that, in the uplink, the sender of the service message is the terminal, and the receiver of the service message may be other devices. In addition, step 9141, step 9142, and step 9143 are different from step 4131, step 4132, and step 4133 in that, in step 9141, step 9142, and step 9143, other devices (for example, application server or platform or other terminal) receive service messages. Step 9151, step 9152, step 9153 are different from step 4141, step 4142, and step 4143 in that, in step 9151, step 9152, step 9153, other devices (for example, application server or platform or other terminal) process service messages.

When implemented by other devices, the terminals in steps 4131, 4132, and 4133 can be replaced with other devices, which will not be repeated here.

For example, the other device may be a platform 40, or an application server, or other terminal that communicates with the terminal, and the communication device may be deployed on the terminal 10. In an optional embodiment, in the embodiment of the present application, if the sender of the service message is a terminal. As another embodiment of the present application, as shown in FIG. 8, before step 908, the method provided in the embodiment of the present application further includes:

Step 907: The first application in the terminal sends a service message to the communication device. That is, step 908 can be implemented in the following manner: the communication device receives the service message sent by the first application. For example, the first application may be a QQ application in the terminal. At this time, the application server may be the application server corresponding to the QQ. Or the first application may be an in-vehicle application installed in the terminal. In this case, other devices may be other terminals.

In an optional implementation manner, for uplink, before step 912, the method may further include: the communication device determines the network status of the network corresponding to the multiple candidate networks. Or the communication device obtains the processing capability of the RSU communicating with the terminal according to the location information of the terminal. In another possible embodiment, the communication device is deployed in the terminal. With reference to FIG. 8, as shown in FIG. 8, the steps in the embodiment of the present application that the communication device determines the network status of the network corresponding to the multiple candidate networks can specifically Realize in the following way:

Step 9101. The communication device sends a second request message to the terminal module according to the multiple candidate networks, where the second request message is used to query the network status of the multiple candidate networks.

Step 9102. The communication device obtains the network status of the network corresponding to the multiple candidate networks from the module.

Specifically, the module of the terminal and the access devices corresponding to one or more candidate networks that the terminal accesses respectively obtain signal strength and network status through System Information (SIB2). The communication device selects the API of the corresponding module according to the network type of the one or more candidate networks currently connected to the terminal to send a Network Status Request message to the access devices corresponding to the one or more candidate networks that the terminal accesses. To obtain the network status of one or more to-be-selected networks, the Network Status Request message includes information and StatusType of one or more to-be-selected networks. The information of one or more candidate networks is used to indicate the network status of which candidate network to obtain, and the StatusType indicates singleStrength, Networkcongestion, or both singleStrength and Networkcongestion. The terminal module converts the BarringFactor information of the SIB2 between the terminal and at least one access device into Network Status Information:

[P00, P10]->Hight

[P10, P30]->Middle

[P30, P80]->Low

>P80 and above: Normal

The module returns the converted NSI to the communication device through Network Status Response, carrying the parameter Network Status Information.

In a possible implementation manner, when the communication device is deployed on the terminal, as shown in FIG. 8, the method in the embodiment of the present application further includes:

Step 906: The RSU periodically sends the processing capability of the RSU to the module of the terminal, that is, the module of the terminal can periodically receive the processing capability of the RSU from the RSU.

It should be understood that the RSU may periodically send the processing capability of the RSU to the module of the terminal according to the preset period, that is, the module of the terminal may periodically receive the processing capability of the RSU from the RSU according to the preset period. The embodiment of the present application does not limit the preset period.

Exemplarily, the module in the terminal may be a modem in the terminal.

Correspondingly, as shown in FIG. 8, the step in the embodiment of the present application that the communication device obtains the processing capability of the RSU communicating with the terminal according to the location information of the terminal can be specifically implemented in the following ways:

Step 9111. The communication device sends a first request message to the terminal module. The first request message is used to request the processing capability of the RSU.

Step 9112. The communication device receives the processing capability of the RSU sent by the module.

Exemplarily, the first request message may be an LwM2M message. For example, an Object can be added to the LwM2M message, or the following functions as shown in Table 4 or Table 5 can be realized by extending a resource from an existing object (Object).

Table 4

Resource definition:

table 5

It should be noted that, as shown in FIG. 8, the method provided by the embodiment of the present application before step 904 further includes: step 901-step 905, for specific content, please refer to the description in step 401-step 405, but FIGS. 4 and 8 The difference is: in Figure 4, the terminal is registered to the platform or network. In Figures 8 and 8, because the communication device is deployed on the terminal, the module in the terminal is registered to the platform or network. In addition, the module in the terminal It can also periodically obtain the processing capability of the RSU that the terminal accesses.

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

The embodiments of the present application may divide the functional units according to the above-mentioned method example communication devices and terminals. For example, each functional unit may be divided corresponding to each function, or two or more functions may be integrated into one processing unit. The above-mentioned integrated unit can be implemented in the form of hardware or software functional unit. It should be noted that the division of units in the embodiments of the present application is illustrative, and is only a logical function division, and there may be other division methods in actual implementation.

The method of the embodiment of the present application is described above with reference to Figs. 3 to 8, and the communication device provided in the embodiment of the present application for performing the foregoing method is described below. Those skilled in the art can understand that the method and the device can be combined and referenced with each other, and a communication device provided in an embodiment of the present application can execute the steps performed by the terminal or the communication device in the above-mentioned method for determining a communication network.

The following is an example of dividing each function module corresponding to each function:

In the case of using an integrated unit, FIG. 9 shows a communication device involved in the foregoing embodiment, and the communication device may include: a processing unit 101 and a communication unit 102.

In an example, the communication device is a logic module in a terminal or a platform. In this case, the communication unit 102 is used to support the communication device to perform step 101 in the above-mentioned embodiment. The processing unit 101 is configured to support the communication device to execute step 102 and step 103 in the foregoing embodiment.

In another example, the communication device is a logic module in the platform, and the communication unit 102 is also used to support the communication device to execute steps 407 and 408 in the foregoing embodiment. The processing unit 101 is configured to support the communication device to execute step 411 in the foregoing embodiment.

In an optional implementation manner, the communication unit 102 is further configured to support the communication device to execute step 404, step 409, step 410, step 4121, step 4123, and step 4124 in the foregoing embodiment.

The processing unit 101 is configured to support the communication device to execute step 405 and step 4122 in the foregoing embodiment.

In another example, the communication device is a logic module in the terminal. In this case, the communication unit 102 is used to support the communication device to perform step 908 in the foregoing embodiment. The processing unit 101 is configured to support the communication device to execute step 909 and step 912 in the foregoing embodiment.

In a possible embodiment, the communication unit 102 is further configured to support the communication device to execute step 904, step 9101, step 9102, step 9111, step 9112, step 9131, step 9133, and step 9134 in the foregoing embodiment. The processing unit 101 is further configured to support the communication device to execute step 905 and step 9132 in the foregoing embodiment.

In another example, the communication device is another device or a chip applied to another device. In this case, the communication unit 102 is configured to support the communication device to perform step 914 performed by the terminal in the foregoing embodiment. The processing unit 101 is configured to support the communication device to execute step 9151 performed by the terminal in the foregoing embodiment. For example, step 9141, step 9142, step 9143. Step 9152 and Step 9153.

In another example, the communication device is a terminal or a chip applied to the terminal. In this case, the communication unit 102 is used to support the communication device to perform step 4131 and step 4132 performed by the terminal in the foregoing embodiment. , Step 4133. The processing unit 101 is configured to support the communication device to execute step 4142 and step 4143 performed by the terminal in the foregoing embodiment.

The communication device may also include a storage unit. The storage unit is used to store computer program code, and the computer program code includes instructions. If the communication device is a chip used in a terminal or the communication device is a chip used in other equipment, the storage unit may be a storage unit (for example, a register, a cache, etc.) in the chip, or It may be a storage unit (for example, read-only memory, random access memory, etc.) outside the chip of the terminal or other device.

In the case of using an integrated unit, FIG. 10 shows a schematic diagram of a possible logical structure of the communication device involved in the foregoing embodiment. The communication device includes: a processing module 112 and a communication module 113. The processing module 112 is used to control and manage the actions of the communication device. For example, the processing module 112 is used to perform information/data processing steps in the communication device. The communication module 113 is used to support the steps of sending or receiving information/data in the communication device.

In a possible embodiment, the communication device may further include a storage module 111 for storing program codes and data that the communication device can use.

In another example, the communication device is a logic module in the platform, and the communication module 113 is also used to support the communication device to execute steps 407 and 408 in the foregoing embodiment. The processing module 112 is configured to support the communication device to execute step 411 in the foregoing embodiment.

In an optional implementation manner, the communication module 113 is further configured to support the communication device to execute step 404, step 409, step 410, step 4121, step 4123, and step 4124 in the foregoing embodiment.

The processing module 112 is configured to support the communication device to execute step 405 and step 4122 in the foregoing embodiment.

In another example, the communication device is a logic module in the terminal. In this case, the communication module 113 is used to support the communication device to perform step 908 in the foregoing embodiment. The processing module 112 is used to support the communication device to perform step 909 and step 912 in the foregoing embodiment.

In a possible embodiment, the communication module 113 is also used to support the communication device to execute step 904, step 9101, step 9102, step 9111, step 9112, step 9131, step 9133, and step 9134 in the foregoing embodiment. The processing module 112 is also used to support the communication device to execute steps 905 and 9132 in the foregoing embodiment.

In another example, the communication device is another device or a chip applied to other devices. In this case, the communication module 113 is used to support the communication device to perform step 914 performed by the terminal in the foregoing embodiment. The processing module 112 is configured to support the communication device to execute step 9151 performed by the terminal in the foregoing embodiment. For example, step 9141, step 9142, step 9143. Step 9152 and Step 9153.

In another example, the communication device is a terminal or a chip applied to the terminal. In this case, the communication module 113 is used to support the communication device to perform step 4131 and step 4132 performed by the terminal in the above embodiment. , Step 4133. The processing module 112 is configured to support the communication device to execute step 4141, step 4142, and step 4143 performed by the terminal in the foregoing embodiment.

If the communication device is a terminal, or a chip used in a terminal, or when the communication device is another device or a chip in another device, the processing module 112 may be a processor or a controller, for example, a central processing unit Units, general-purpose processors, digital signal processors, application-specific integrated circuits, field programmable gate arrays or other programmable logic devices, transistor logic devices, hardware components or any combination thereof. It can implement or execute various exemplary logical blocks, modules and circuits described in conjunction with the disclosure of the present invention. The processor may also be a combination of computing functions, for example, a combination of one or more microprocessors, a combination of a digital signal processor and a microprocessor, and so on. The communication module 113 may be a transceiver, a transceiver circuit, or a communication interface. The storage module 111 may be a memory.

When the processing module 112 is the processor 41 or the processor 45, the communication module 113 is the communication interface 43 or the transceiver, and the storage module 111 is the memory 42, the hardware of the communication device may be the communication device shown in FIG. 11 at this time. The communication device includes a processor 41, a communication line 44, and at least one communication interface (in FIG. 11, the communication interface 43 is included as an example for illustration).

Optionally, the communication device may further include a memory 42.

The processor 41 may be a general-purpose central processing unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more programs for controlling the execution of the program of this application. integrated circuit.

The communication line 44 may include a path to transmit information between the aforementioned components.

The communication interface 43 uses any device such as a transceiver to communicate with other devices or communication networks, such as Ethernet, radio access network (RAN), wireless local area networks (WLAN), etc. .

The memory 42 may be a read-only memory (ROM) or other types of static storage devices that can store static information and instructions, random access memory (RAM), or other types that can store information and instructions The dynamic storage device can also be electrically erasable programmable read-only memory (EEPROM), compact disc read-only memory (CD-ROM) or other optical disk storage, optical disc storage (Including compact discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or can be used to carry or store desired program codes in the form of instructions or data structures and can be used by a computer Any other media accessed, but not limited to this. The memory can exist independently and is connected to the processor through the communication line 44. The memory can also be integrated with the processor.

The memory 42 is used to store computer-executable instructions for executing the solution of the present application, and the processor 41 controls the execution. The processor 41 is configured to execute computer-executable instructions stored in the memory 42 to implement the method for determining a communication network provided in the following embodiments of the present application.

Optionally, the computer-executable instructions in the embodiments of the present application may also be referred to as application program code, which is not specifically limited in the embodiments of the present application.

In a specific implementation, as an embodiment, the processor 41 may include one or more CPUs, such as CPU0 and CPU1 in FIG. 11.

In specific implementation, as an embodiment, the communication device may include multiple processors, such as the processor 41 and the processor 45 in FIG. 11. Each of these processors can be a single-CPU (single-CPU) processor or a multi-core (multi-CPU) processor. The processor here may refer to one or more devices, circuits, and/or processing cores for processing data (for example, computer program instructions).

It should be understood that if the communication device is a terminal, the communication interface 43 can be replaced by a transceiver.

FIG. 12 is a schematic structural diagram of a chip 150 provided by an embodiment of the present application. The chip 150 includes one or more (including two) processors 1510 and a communication interface 1530.

Optionally, the chip 150 further includes a memory 1540. The memory 1540 may include a read-only memory and a random access memory, and provides operation instructions and data to the processor 1510. A part of the memory 1540 may also include a non-volatile random access memory (NVRAM).

In some embodiments, the memory 1540 stores the following elements, execution modules or data structures, or their subsets, or their extended sets.

In the embodiment of the present application, the corresponding operation is executed by calling the operation instruction stored in the memory 1540 (the operation instruction may be stored in the operating system).

The processor 1510 controls processing operations of the terminal or other devices, and the processor 1510 may also be referred to as a central processing unit (CPU).

The memory 1540 may include a read-only memory and a random access memory, and provides instructions and data to the processor 1510. A part of the memory 1540 may also include a non-volatile random access memory (NVRAM). For example, in an application, the memory 1540, the communication interface 1530, and the memory 1540 are coupled together through a bus system 1520, where the bus system 1520 may include a power bus, a control bus, and a status signal bus in addition to a data bus. However, for clarity of description, various buses are marked as the bus system 1520 in FIG. 12.

The methods disclosed in the foregoing embodiments of the present application may be applied to the processor 1510 or implemented by the processor 1510. The processor 1510 may be an integrated circuit chip with signal processing capabilities. In the implementation process, the steps of the foregoing method can be completed by hardware integrated logic circuits in the processor 1510 or instructions in the form of software. The above-mentioned processor 1510 may be a general-purpose processor, a digital signal processing (digital signal processing, DSP), an application specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or Other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components. The methods, steps, and logical block diagrams disclosed in the embodiments of the present application can be implemented or executed. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like. The steps of the method disclosed in the embodiments of the present application may be directly embodied as being executed and completed by a hardware decoding processor, or executed and completed by a combination of hardware and software modules in the decoding processor. The software module can be located in a mature storage medium in the field such as random access memory, flash memory, read-only memory, programmable read-only memory, or electrically erasable programmable memory, registers. The storage medium is located in the memory 1540, and the processor 1510 reads the information in the memory 1540, and completes the steps of the foregoing method in combination with its hardware.

In a possible implementation manner, the communication interface 1530 is used to perform the receiving and sending steps of the terminal and other devices (for example, application server/platform) in the embodiments shown in FIGS. 3-8. The processor 1510 is configured to perform processing steps of the terminal and other devices (for example, application server/platform) in the embodiments shown in FIGS. 3-8.

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

In the foregoing embodiment, the instructions stored in the memory for execution by the processor may be implemented in the form of a computer program product. The computer program product may be written in the memory in advance, or it may be downloaded and installed in the memory in the form of software.

The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on the computer, the processes or functions according to the embodiments of the present application are generated in whole or in part. The computer can be a general-purpose computer, a dedicated computer, a computer network, or other programmable devices. Computer instructions can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, computer instructions can be transmitted from a website, computer, server, or data center through a cable (such as Coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) means to transmit to another website, computer, server or data center. The computer-readable storage medium may be any available medium that can be stored by a computer or a data storage device such as a server or a data center integrated with one or more available media. The usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, and a magnetic tape), an optical medium (for example, a DVD), or a semiconductor medium (for example, a solid state disk, SSD).

On the one hand, a computer-readable storage medium is provided, and instructions are stored in the computer-readable storage medium. When the instructions are executed, the communication device executes step 101, step 102, and step 103 in the embodiment.

On the one hand, a computer-readable storage medium is provided, and instructions are stored in the computer-readable storage medium. When the instructions are executed, the communication device executes step 407, step 408, step 411, step 404, and step 409 in the embodiment. , Step 410, Step 4121, Step 4123, Step 4124, Step 405, Step 4122.

On the other hand, a computer-readable storage medium is provided. The computer-readable storage medium stores instructions. When the instructions are executed, the communication device applied in the terminal executes steps 908, 909, 912, and 904. Step 9101, step 9102, step 9111, step 9112, step 9131, step 9133, step 9134, step 905, step 9132.

In another aspect, a computer-readable storage medium is provided. The computer-readable storage medium stores instructions. When the instructions are executed, other devices or chips applied to other devices execute steps 914 and 9151 in the embodiments. . For example, step 9141, step 9142, step 9143. Step 9152 and Step 9153.

The aforementioned readable storage medium may include: U disk, mobile hard disk, read-only memory, random access memory, magnetic disk or optical disk and other media that can store program codes.

On the one hand, a computer program product including instructions is provided. The computer program product stores instructions. When the instructions are executed, the communication device executes steps 407, 408, 411, 404, and 409 in the embodiments. Step 410, step 4121, step 4123, step 4124, step 405, step 4122.

On the other hand, a computer program product including instructions is provided. The computer program product stores instructions. When the instructions are executed, the communication device applied in the terminal executes step 908, step 909, step 912, and step 904. Step 9101, Step 9102, Step 9111, Step 9112, Step 9131, Step 9133, Step 9134, Step 905, Step 9132.

In yet another aspect, a computer program product including instructions is provided. The computer program product stores instructions. When the instructions are executed, step 914 and step 9151 are performed. For example, step 9141, step 9142, step 9143. Step 9152 and Step 9153.

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 the form of a computer program product in whole or in part. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on the computer, the processes or functions according to the embodiments of the present application are generated in whole or in part. The computer can be a general-purpose computer, a dedicated computer, a computer network, or other programmable devices. Computer instructions may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, computer instructions may be transmitted from a website, computer, server, or data center through a cable (such as Coaxial cable, optical fiber, digital subscriber line (digital subscriber line, referred to as DSL)) or wireless (such as infrared, wireless, microwave, etc.) transmission 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 includes one or more data storage devices such as a server or a data center that can be integrated with the medium. The usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, and a magnetic tape), an optical medium (for example, a DVD), or a semiconductor medium (for example, a solid state disk (SSD)).

Although the present application is described in conjunction with various embodiments, in the process of implementing the claimed application, those skilled in the art can understand and realize the disclosure by looking at the drawings, the disclosure, and the appended claims. Other changes to the embodiment. In the claims, the word "comprising" does not exclude other components or steps, and "a" or "one" does not exclude multiple. A single processor or other unit may implement several functions listed in the claims. Certain measures are described in mutually different dependent claims, but this does not mean that these measures cannot be combined to produce good results.

Although the application has been described in combination with specific features and embodiments, it is obvious that various modifications and combinations can be made without departing from the spirit and scope of the application. Accordingly, this specification and drawings are merely exemplary descriptions of the application defined by the appended claims, and are deemed to have covered any and all modifications, changes, combinations or equivalents within the scope of the application. Obviously, those skilled in the art can make various changes and modifications to the application without departing from the spirit and scope of the application. In this way, if these modifications and variations of this application fall within the scope of the claims of this application and their equivalent technologies, this application is also intended to include these modifications and variations.

Claims

A method for determining a communication network, characterized in that it comprises:

The communication device receives a service message, the service message being a service message for the terminal and other devices to communicate through the communication device, the service message including a service identifier and a first indication, and the first indication is used to indicate the communication device Planning a target network for transmitting the service message;

The communication device determines a variety of candidate networks according to the identification of the terminal and the service identification; the candidate network is a network that not only belongs to the network type supported by the terminal, but also belongs to the communication device. The network corresponding to the network type of the service configuration;

The communication device determines a target network that meets the service requirements corresponding to the service according to the network status of the multiple candidate networks, and the target network is used to transmit the service message.
The method according to claim 1, wherein the method further comprises: the communication device acquiring the network status of the candidate network, and the network status is used to reflect the congestion level of the candidate network.
The method according to claim 1 or 2, wherein the method further comprises:

The communication device receives a service configuration from an application server, where the service configuration includes any one or more of the following information of the service corresponding to the service ID: service ID, service requirement, or transmission path direction;

According to the service configuration, the communication device configures the service with a network type that meets the service requirement.
The method according to any one of claims 1 to 3, wherein when the network to be selected includes a network whose network type is PC5, the method further comprises:

The communication device acquires the processing capability of the roadside unit RSU communicating with the terminal according to the location information of the terminal;

The communication device determines the target network that meets the service requirements corresponding to the service according to the network status of the multiple candidate networks, including:

The communication device determines the target network for transmitting the service message according to the network status of the multiple candidate networks and the processing capability of the RSU.
The method according to claim 4, wherein the reliability of the service corresponding to the service identifier is lower than a first threshold, and the target network is the network corresponding to the RSU.
The method according to claim 4 or 5, wherein the delay of the service corresponding to the service identifier is lower than a second threshold, and the target network is that the network status of the multiple candidate networks meets the requirements of the service The required network or the network corresponding to the RSU.
The method according to any one of claims 4-6, wherein the bandwidth of the service corresponding to the service identifier is higher than a third threshold, or the reliability of the service corresponding to the service identifier is higher than a fourth threshold, The target network is a network whose network status meets the service requirements corresponding to the service identifier among the multiple candidate networks, and the network corresponding to the RSU.
The method according to claim 7, wherein the bandwidth of the service corresponding to the service identifier is higher than a third threshold, and the method further comprises:

The communication device generates one or more message packets of the service message according to the service message, each of the one or more message packets includes a second indication, and the second indication is used to indicate the message The order of the packages;

The communication device transmits the one or more message packets to the terminal or the other network using the network status of the multiple candidate networks that meets the service requirements corresponding to the service identifier and the network corresponding to the RSU equipment.
The method according to claim 7 or 8, wherein the reliability of the service corresponding to the service identifier is higher than a fourth threshold, and the method further comprises:

The communication device performs a copy operation on the business message to obtain the copied business message;

The communication device transmits the service message using a network whose network status in the multiple candidate networks meets the service requirements corresponding to the service identifier, and uses the network corresponding to the RSU to transmit the copy service message, the copy service message And the service message also carries time information.
The method according to any one of claims 4-9, wherein the communication device is deployed in the terminal, and the communication device obtains the roadside unit communicating with the terminal according to the location information of the terminal The processing capabilities of RSU include:

The communication device sends a first request message to the module of the terminal, where the first request message is used to request the processing capability of the RSU;

The communication device receives the processing capability of the RSU from the module.
The method according to any one of claims 4-9, wherein the communication device is deployed on a platform that provides services for the terminal, and the communication device obtains the communication with the terminal according to the location information of the terminal. The processing capacity of the roadside unit RSU for communication includes:

The communication device obtains the processing capability of the RSU from the RSU.
The method according to any one of claims 2-9 or 11, wherein the communication device is deployed on a platform that provides services for the terminal, and the communication device obtains the network status of the candidate network, comprising :

The communication device obtains the network status of the candidate network from a core network element in the candidate network.
The method according to any one of claims 2-10, wherein the communication device is deployed on the terminal, and the communication device acquiring the network status of the candidate network comprises:

The communication device sends a second request message to the module of the terminal according to the multiple candidate networks, where the second request message is used to query the network status of the multiple candidate networks;

The communication device obtains the network status of the multiple candidate networks from the module.
The method according to any one of claims 1-13, wherein the sender of the service message is the terminal, and the communication device is deployed on the terminal;

Or the sender of the service message is the other device, and the communication device is deployed on a platform that provides services for the terminal.
The method according to any one of claims 1-14, wherein the sender of the service message is the other device, and the service message further includes the identification of the terminal;

The sender of the service message is the terminal, and the communication device determines the identity of the terminal through an internal interface or configuration of the terminal.
A communication device, characterized by comprising:

The communication unit is configured to receive a service message, the service message being a service message for the terminal and other devices to communicate through the communication device, the service message including a service identifier and a first indication, and the first indication is used to indicate The communication device plans to transmit the target network of the service message;

The processing unit is configured to determine multiple candidate networks according to the terminal identifier and the service identifier; the candidate network is a network corresponding to the network type supported by the terminal and also belongs to the communication device. The network corresponding to the network type of the service configuration;

The processing unit is further configured to determine a target network that satisfies the service requirements corresponding to the service according to the network status of the multiple candidate networks, and the target network is used to transmit the service message.
The apparatus according to claim 16, wherein the communication unit is further configured to obtain the network status of the to-be-selected network, and the network status is used to reflect the congestion level of the to-be-selected network.
The device according to claim 16 or 17, wherein the communication unit is further configured to receive a service configuration from an application server, the service configuration including any one of the following information of the service corresponding to the service identifier Or more: business identification, business requirement, or transmission path direction;

The processing unit is further configured to configure a network type that meets the service requirements for the service according to the service configuration.
The device according to any one of claims 16-18, wherein when the network to be selected includes a network with a network type of PC5, the communication unit is further configured to, according to the location information of the terminal, Acquiring the processing capability of the roadside unit RSU communicating with the terminal;

The processing unit is specifically configured to determine a target network for transmitting the service message according to the network status of the multiple candidate networks and the processing capability of the RSU.
The apparatus according to claim 19, wherein the reliability of the service corresponding to the service identifier is lower than a first threshold, and the target network is the network corresponding to the RSU.
The device according to claim 19 or 20, wherein the delay of the service corresponding to the service identifier is lower than a second threshold, and the target network is that the network status of the multiple candidate networks meets the requirements of the service The required network or the network corresponding to the RSU.
The apparatus according to any one of claims 19-21, wherein the bandwidth of the service corresponding to the service identifier is higher than a third threshold, or the reliability of the service corresponding to the service identifier is higher than a fourth threshold, The target network is a network whose network status meets the service requirements corresponding to the service identifier among the multiple candidate networks, and the network corresponding to the RSU.
The apparatus according to claim 22, wherein the bandwidth of the service corresponding to the service identifier is higher than a third threshold, and the processing unit is further configured to generate one or more of the service messages according to the service message. A plurality of message packets, each of the one or more message packets includes a second indication, and the second indication is used to indicate the order of the message packets;

The communication unit is further configured to transmit the one or more message packets to the terminal using the network whose network status in the multiple candidate networks meets the service requirements corresponding to the service identifier and the network corresponding to the RSU Or said other equipment.
The apparatus according to claim 22 or 23, wherein the reliability of the service corresponding to the service identifier is higher than a fourth threshold,

The processing unit is also used to perform a copy operation on the business message to obtain the copied business message;

The communication unit is further configured to transmit the service message using a network in which the network status of the multiple candidate networks meets the service requirements corresponding to the service identifier, and use the network corresponding to the RSU to transmit the copy service message, so The copy service message and the service message also carry time information.
The device according to any one of claims 19-24, wherein the communication device is deployed in the terminal, and the communication unit is further configured to send a first request message to a module of the terminal, so The first request message is used to request the processing capability of the RSU;

The communication unit is also specifically configured to receive the processing capability of the RSU from the module.
The device according to any one of claims 19-24, wherein the communication device is deployed on a platform that provides services for the terminal, and the communication unit is specifically configured to obtain the RSU from the RSU Processing power.
The device according to any one of claims 17-24, or 26, wherein the communication device is deployed on a platform that provides services for the terminal, and the communication unit is specifically configured to download from the candidate network Obtain the network status of the candidate network from the core network network element in.
The device according to any one of claims 17-25, wherein the communication device is deployed on the terminal, and the communication unit is further configured to communicate with the terminal according to the multiple candidate networks The module sends a second request message, where the second request message is used to query the network status of the multiple candidate networks;

The communication unit is also used to obtain the network status of the multiple candidate networks from the module.
The device according to any one of claims 16-28, wherein the sender of the service message is the terminal, and the communication device is deployed on the terminal;

Or the sender of the service message is the other device, and the communication device is deployed on a platform that provides services for the terminal.
The apparatus according to any one of claims 16-29, wherein the sender of the service message is the other device, and the service message further includes an identifier of the terminal;

The sender of the service message is the terminal, and the communication device determines the identity of the terminal through an internal interface or configuration of the terminal.
A computer-readable storage medium, characterized in that instructions are stored in the computer-readable storage medium, and when the instructions are executed, the method for determining a communication network according to any one of claims 1-15 is implemented.
A communication system, characterized by comprising: the communication device according to any one of claims 16-30, a terminal communicating with the communication device, and other equipment.