Communication switching method and device, base station, vehicle and system, medium and product

Abstract

The invention relates to the technical field of communication, and particularly provides a communication switching method and device, a base station, a vehicle, a system, a medium and a product. In the invention, after the computing power sinking device receives the first message that the receiving terminal requests to switch the communication mode, when the first message meets the preset first condition, the computing power sinking device sends the second message to the receiving terminal and the sending terminal; the second message is used for indicating the receiving terminal to communicate with the sending terminal through the second communication mode; wherein the first condition is used for indicating the communication condition of the second communication mode. In conclusion, according to the technical scheme provided by the invention, the stable switching of the communication modes between the terminals can be realized, the occupation of a large amount of computing power and resources of the terminals can be avoided, the adverse effect on the communication quality of the terminals is avoided, and the failure rate is relatively low.

Description

Technical Field

[0001] The present disclosure relates to the field of communication technology, and in particular to a communication switching method and device, a base station, a vehicle and a system, a medium and a product. Background Art

[0002] The Cellular-Vehicle to Everything (C-V2X) scenario includes two communication interfaces, PC5 and Uu. Among them, the PC5 communication method is a short-distance direct communication method between vehicles, people, and road infrastructure, which can achieve low-latency, high-capacity communication through direct connection, broadcasting, and network scheduling; while the Uu communication method is through cellular network communication, that is, the terminals communicate through base stations, which can achieve long-distance and larger-scale reliable communication. C-V2X scenarios are complex and changeable, and may encounter unfavorable conditions such as occlusion and long-distance communication. Therefore, in actual application scenarios, combining the advantages of PC5 communication and Uu communication for comprehensive application is the focus of this field.

[0003] In the related technology, the switching rules of the communication method are configured between terminals. In the actual communication scenario, the terminal needs to communicate normally with the opposite terminal, and also needs to calculate and judge in real time whether it is necessary to switch the PC5 communication to Uu communication. Then, when the PC5 communication quality is poor, the communication switching instruction is sent to the opposite terminal through PC5 communication. However, this solution in which the terminal implements the communication switching decision causes the terminal to face huge computing pressure, especially when the number of opposite terminals is large, which may further deteriorate the terminal communication quality; in addition, this solution may fail to accurately transmit the communication switching instruction when the PC5 communication quality is poor, resulting in a high probability of switching failure. Summary of the invention

[0004] The present disclosure is proposed in view of the above problems. The present disclosure provides a communication switching method and device, a base station, a vehicle and a system, a medium and a product.

[0005] According to one aspect of the present disclosure, a communication switching method is provided, which is applied to a computing power sinking device, and the method includes:

[0006] Receiving a first message from a receiving terminal, wherein the first message is used to request that a first communication mode between the receiving terminal and a sending terminal be switched to a second communication mode;

[0007] When the first information satisfies a preset first condition, sending a second message to the receiving terminal and the sending terminal, where the second message is used to instruct the receiving terminal to communicate with the sending terminal through the second communication mode;

[0008] The first condition is used to indicate a communication condition of the second communication mode.

[0009] According to another aspect of the present disclosure, a communication switching method is provided, which is applied to any receiving terminal, and the method includes:

[0010] Sending a first message to a computing power sinking device, where the first message is used to request that a first communication mode between the receiving terminal and the sending terminal be switched to a second communication mode;

[0011] receiving a second message from the computing power sinking device, where the second message is used to instruct the receiving terminal to communicate with the sending terminal through the second communication mode;

[0012] The second message is sent when the first information satisfies a preset first condition, and the first condition is used to indicate a communication condition of the second communication mode.

[0013] According to another aspect of the present disclosure, a computing power sinking device is provided, comprising:

[0014] A receiving unit, configured to receive a first message from a receiving terminal, wherein the first message is used to request that a first communication mode between the receiving terminal and a sending terminal be switched to a second communication mode;

[0015] a sending unit, configured to send a second message to the receiving terminal and the sending terminal when the first information satisfies a preset first condition, wherein the second message is used to instruct the receiving terminal to communicate with the sending terminal through the second communication mode;

[0016] The first condition is used to indicate a communication condition of the second communication mode.

[0017] According to another aspect of the present disclosure, there is provided a terminal, including:

[0018] A sending unit, configured to send a first message to the computing power sinking device, wherein the first message is used to request that a first communication mode between the terminal and the sending terminal be switched to a second communication mode;

[0019] A receiving unit, configured to receive a second message from the computing power sinking device, wherein the second message is used to instruct the terminal to communicate with the sending terminal through the second communication mode;

[0020] The second message is sent when the first information satisfies a preset first condition, and the first condition is used to indicate a communication condition of the second communication mode.

[0021] According to another aspect of the present disclosure, a base station is provided, wherein the base station is deployed with a computing power sinking device; the computing power sinking device is used to implement the method performed by the computing power sinking device in any of the above embodiments;

[0022] The base station includes: a computing power base station.

[0023] According to another aspect of the present disclosure, a vehicle is provided, wherein the vehicle is equipped with a terminal; the terminal is used to implement the method executed by the terminal (ie, the receiving terminal, the sending terminal) in any of the above embodiments.

[0024] According to another aspect of the present disclosure, there is provided a communication system, comprising:

[0025] A computing power sinking device, used to implement the method performed by the computing power sinking device in any of the above embodiments;

[0026] At least two terminals, any one of which is used to implement the method executed by the terminal in any of the above embodiments.

[0027] According to another aspect of the present disclosure, an electronic device is provided, including a memory, a processor, and a computer program stored in the memory, wherein the processor executes the computer program to implement the method described in any one of the above embodiments.

[0028] According to another aspect of the present disclosure, a computer-readable storage medium is provided, on which a computer program / instruction is stored. When the computer program / instruction is executed by a processor, the method described in any of the above embodiments is implemented.

[0029] According to another aspect of the present disclosure, a computer program product is provided, including a computer program / instruction, which implements the method described in any of the above embodiments when the computer program / instruction is executed by a processor.

[0030] As will be described in detail below, according to a communication switching method and device, base station, vehicle and system, medium and product of an embodiment of the present disclosure. In the present disclosure, after receiving the first message from the receiving terminal requesting to switch the communication mode, when the first information meets the preset first condition, the computing power sinking device sends a second message to the receiving terminal and the sending terminal to instruct the receiving terminal to communicate with the sending terminal through the second communication mode, that is, to instruct to switch the communication mode. In addition, the first condition is used to indicate the communication condition of the second communication mode. In this way, when the terminal believes that the first communication mode does not meet the communication requirements, and the computing power sinking device side determines that the second communication mode can meet the communication requirements, the computing power sinking device can make a decision and can realize the smooth switching of the communication mode between the terminals. In other words, the present disclosure is to realize the decision and switching of the communication mode by the computing power sinking device. This process does not need to occupy the terminal computing power and resources, avoids the adverse effect on the terminal communication quality, and the computing power sinking device can communicate with the terminal safely and smoothly through the second communication mode, and also ensures the effective sending of the communication switching instruction, reducing the switching failure rate. In summary, the technical solution provided by the present disclosure can avoid the large-scale occupation of terminal computing power and resources, avoid adverse effects on the terminal communication quality, have a low failure rate, and can achieve smooth switching of communication modes between terminals, ensuring secure and stable communications.

[0031] It is to be understood that both the foregoing general description and the following detailed description are exemplary, and are intended to provide further explanation of the technology as claimed. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The above and other purposes, features and advantages of the present disclosure will become more apparent by describing the embodiments of the present disclosure in more detail in conjunction with the accompanying drawings. The accompanying drawings are used to provide a further understanding of the embodiments of the present disclosure and constitute a part of the specification. Together with the embodiments of the present disclosure, they are used to explain the present disclosure and do not constitute a limitation of the present disclosure. In the accompanying drawings, the same reference numerals generally represent the same components or steps.

[0033] Figure 1 A schematic diagram of the architecture of a communication system provided in an embodiment of the present disclosure.

[0034] Figure 2 The present invention is a schematic diagram of a communication system architecture applied to a C-V2X scenario according to an embodiment of the present disclosure.

[0035] Figure 3 A schematic diagram of an interactive process of a communication switching method provided in an embodiment of the present disclosure.

[0036] Figure 4 A schematic diagram of an interactive process of another communication switching method provided in an embodiment of the present disclosure.

[0037] Figure 5 A schematic diagram of an interactive process of another communication switching method provided in an embodiment of the present disclosure.

[0038] Figure 6 A structural block diagram of a computing power sinking device provided in an embodiment of the present disclosure.

[0039] Figure 7 A structural block diagram of a terminal provided in an embodiment of the present disclosure.

[0040] Figure 8 A structural block diagram of a base station provided in an embodiment of the present disclosure.

[0041] Fig. 9 A structural block diagram of a vehicle provided in an embodiment of the present disclosure.

[0042] Fig.10 A hardware block diagram of an electronic device provided in an embodiment of the present disclosure.

[0043] Fig.11 A schematic diagram of a computer-readable storage medium provided for an embodiment of the present disclosure. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical solution and advantages of the present disclosure more obvious, the exemplary embodiments according to the present disclosure will be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present disclosure, rather than all the embodiments of the present disclosure, and it should be understood that the present disclosure is not limited to the exemplary embodiments described here.

[0045] The present disclosure is specifically applied to network devices that communicate in two or more communication modes.

[0046] Specifically, the specific scenarios to which the present disclosure is applied may include, but are not limited to, the C-V2X scenarios, V2X scenarios or other Internet of Things scenarios described in the background technology, without exhaustive listing.

[0047] The communication methods involved in the present disclosure may include but are not limited to: at least one of direct communication and network communication. Among them, there may be multiple direct communication methods, which means direct communication between two communication devices without the need for a third party to transfer, which may include but are not limited to: PC5 communication (also known as: PC5 communication method, PC5 communication mode, PC5 interface communication, PC5 port communication, PC5 channel communication, which is not limited to this, and here means a method of achieving communication through a PC5 interface). Among them, network communication means achieving communication through a network, which generally requires a network (specifically a base station) to transfer to achieve communication between the two parties. The present disclosure has no special restrictions on the network used for network communication. In actual scenarios, it may include but is not limited to networks involved in at least one of the following communication systems: Global System of Mobile communication (GSM) system, Code Division Multiple Access (CDMA) system, Wideband Code Division Multiple Access (WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, Advanced Long Term Evolution (LTE-A) system, New Radio (NR) system, NR system evolution system, LTE-based access to unlicensed spectrum (LTE-U) system, NR-based access to unlicensed spectrum (NR-U) system, Non-Terrestrial Networks (NTN) system, Universal Mobile Telecommunication System (UMTS), Wireless Local Area Networks (WLAN), Wireless Fidelity (Wireless Fidelity) system. Fidelity, WiFi), fifth-generation communication (5th-Generation, 5G) system or other communication systems, etc., are not exhaustive. Based on this, taking cellular network communication as an example, the network communication method involved in the present disclosure may include but is not limited to: Uu communication.

[0048] It should be understood that the above application scenarios are not strongly bound to the communication methods. In other communication scenarios, there may be at least one of PC5 communication, Uu communication or other communication methods. In C-V2X scenarios, there may also be other communications besides PC5 communication and Uu communication. No further elaboration is given. In the following, for the sake of convenience, the C-V2X scenario, PC5 communication and Uu communication are still used as examples for specific explanation.

[0049] Specifically, PC5 communication and Uu communication each have their own advantages and disadvantages.

[0050] PC5 communication is a direct connection communication that does not require cellular network coverage, that is, it can achieve short-distance point-to-point communication; while Uu communication requires the participation of base stations and requires cellular network coverage. In fact, PC5 communication and Uu communication can coexist and be used in combination according to different business characteristics, which is more conducive to achieving higher reliability and lower latency for V2X services.

[0051] However, in actual application, PC5 communication faces great interference due to the complexity of C-V2X scenarios. For example, the interference caused by the complex traffic environment on the road, interference from metal materials, interference from buildings, etc., will greatly affect the accuracy and timeliness of communication under the PC5 mode. In addition, PC5 communication is realized through PC5 broadcast messages, and PC5 broadcast messages are greatly affected by the communication distance. Beyond a certain distance, the message packet loss rate and block error rate will increase with the increase of distance. Therefore, in scenarios such as C-V2X, there are often situations where the quality of PC5 communication decreases or even fails to meet basic communication needs. The communication delay of Uu communication is relatively higher, but Uu communication has a longer communication distance and higher reliability. Therefore, when the communication quality of PC5 communication decreases, how to ensure the transmission quality of the original business messages based on PC5 communication and ensure the timeliness and continuity of business messages becomes an urgent problem to be solved.

[0052] Based on this, the redundant communication scheme is first considered in the relevant technology. In the redundant communication scheme, PC5 communication and Uu communication are used simultaneously between communication devices to realize the transmission of business information. Taking the scenario of two vehicles communicating as an example, vehicle 1 and vehicle 2 communicate directly through the PC5 interface, and connect to the base station through the Uu interface to realize network communication. Thus, Uu communication and PC5 communication are combined to support each other and are used together for V2X business transmission to realize redundant communication between vehicle 1 and vehicle 2, so as to ensure communication reliability. However, the redundant communication scheme will cause huge system overhead and waste of resources. For example, if the redundant communication scheme is applied to the targeted transmission of special events such as alarms, this redundant overhead is within the acceptable range of general communication scenarios; but for general business, this redundant overhead is difficult to bear. Therefore, this scheme has been abandoned.

[0053] The related technology further involves a communication switching scheme, that is, configuring the switching rules of the communication method between the terminals, and the terminal makes a judgment and controls the communication switching process. Still take the scenario of switching between PC5 communication and Uu communication in the V2X scenario as an example. When terminal 1 finds that the communication quality of PC5 communication has decreased (that is, it meets the switching rules configured on the terminal side), terminal 1 sends a message (recorded as a switching control message) to terminal 2 through PC5 communication to indicate that the business message between the two is switched to Uu communication, that is, the subsequent business message communication is completed in Uu communication mode. As described in the background technology above, this communication switching scheme uses the terminal as the decision-maker for communication switching. The terminal needs to further calculate and judge whether the switching conditions are met in real time on the premise of ensuring normal business communication, and execute the judgment. This leads to huge computing pressure on the terminal side, especially when facing scenarios where terminals are gathered (such as traffic jams). A terminal needs to communicate with multiple terminals and make communication switching judgments and calculations. This computing pressure is unbearable for the terminal and may even further deteriorate the terminal communication quality. In addition, this communication switching solution relies on PC5 communication to implement the transmission of switching control messages. When the PC5 communication quality is poor, the switching control messages are also subject to packet loss and bit errors, increasing the probability of switching failure. In addition, this communication switching method does not consider whether Uu communication is sufficient to support the current business. If the Uu communication quality is also poor, this switching not only does not improve the original PC5 communication quality degradation problem, but also increases the invalid resource overhead on the base station side.

[0054] Based on this, the present disclosure provides a new technical concept: the receiving end of the direct communication detects the communication quality of the direct communication, and when it is found that the communication quality of the direct communication is poor, it can request the network side to switch to network communication; and after receiving the switching request, the network side can further detect the network communication situation between the sending and receiving ends and decide whether to switch to network communication based on the actual situation, and when the decision is to switch, notify the sending and receiving ends through network communication. In this way, on the one hand, the actual decision on whether to perform communication switching is made through the network side, reducing the excessive computing power burden on the terminal side; and the network side can actually evaluate at least one actual situation of the current network communication quality, the posture relationship between the terminals, etc., so as to make a communication method that is more in line with the current scenario; and, when the decision is made to switch, the switching control message is sent and notified through network communication, avoiding the situation of packet loss or bit error of the switching control message, and improving the switching success rate; on the other hand, in the present disclosure, the communication quality assessment task of the direct communication is undertaken by the receiving terminal of the direct communication, and there is no need for the sending end to perform complex computing power calculations. The receiving end can complete the communication quality detection at a very low computing power cost while receiving the service message, and when it is found that the communication quality is poor (for example, it does not meet the terminal side communication requirements), it requests the network side to switch. The following is a detailed description.

[0055] The application scenarios provided by the present disclosure are as above, and the communication methods involved are as above, which will not be described in detail. For ease of understanding and explanation, the architecture of a communication system applicable to the present disclosure is first introduced. Please refer to Figure 1 , Figure 1 The following is a schematic diagram of the architecture of a communication system provided by an embodiment of the present disclosure. Figure 1 As shown, the communication system may include but is not limited to: a computing power sinking device and a terminal. The computing power sinking device is used to implement the communication switching method provided by the present disclosure, which will be described in detail later. The terminal may be a mobile traffic participant in a vehicle network-related scenario. The number of terminals is not limited and may be multiple ( Figure 1 Two terminals are shown, and a group of transmitting terminals and receiving terminals in communication are used as an example for schematic illustration). Direct communication between the terminals can be achieved through the PC5 interface. Any terminal can achieve network communication with the computing power sinking base station through the Uu interface.

[0056] Specifically, the present disclosure has no special restrictions on the specific form of expression of the terminal, and there may be a variety of possible forms of expression in actual scenarios. For example, in scenarios such as C-V2X, V2X, Internet of Vehicles, and Internet of Things, the terminal may be specifically a mobile traffic participant, for example, it may include but is not limited to: vehicles, user terminals (for example, mobile phones, smart wearable devices, etc.). In actual Internet of Vehicles scenarios, terminals can receive broadcast messages sent by other terminals through the PC5 interface to achieve communication. In addition, the terminals involved in the present disclosure may also include any other electronic devices with at least two communication modes of direct communication and network communication, such as mobile phones, tablet computers, computers with wireless transceiver functions, wearable devices, vehicles, drones, helicopters, airplanes, ships, robots, robotic arms, smart home devices, etc. The embodiments of the present application have no special restrictions on the specific technology and specific device form adopted by the terminal.

[0057] In an exemplary embodiment, the terminal involved in the present disclosure (including any one of the receiving terminal and the sending terminal mentioned below) may include but is not limited to at least one of the following: a vehicle-to-everything (V2X) terminal; a mobile vehicle-to-everything (C-V2X) terminal. The receiving terminal may be deployed in a vehicle; or the receiving terminal may be specifically a vehicle.

[0058] In the present disclosure, the computing power sinking device can be deployed on the network side. Among them, the network side device involved in the present disclosure can be specifically a base station (for example, Figure 2As shown), evolved NodeB (eNodeB), transmission reception point (TRP), next generation NodeB (gNB) in the fifth generation (5G) mobile communication system, next generation base station in the sixth generation (6G) mobile communication system, base station in future mobile communication system or access node in wireless fidelity (WiFi) system, etc.; it can also be a module or unit that completes part of the functions of the base station, for example, it can be a centralized unit (CU) or a distributed unit (DU). The present disclosure has no special restrictions on the specific technology and specific equipment form adopted by the wireless access network equipment. For the convenience of description, the following description takes the base station as an example.

[0059] In addition, the present disclosure has no special restrictions on the name, type, function, etc. of the base station, and the aforementioned base stations can implement this solution. In the C-V2X scenario, the base station can be specifically a computing power base station. In this way, in an exemplary embodiment, the computing power sinking device can be deployed in the computing power base station. At this time, for the sake of distinction, the part of the computing power base station that realizes the original base station capability is called a base station, and the entire base station system including the base station and the computing power sinking device is called a computing power base station.

[0060] In addition, the computing power sinking device is deployed on the base station side and can be integrated into the existing functions or devices of the base station, or it can be an independent device, and there is no special restriction on this. In a possible implementation scenario, an additional computing power sinking device can be deployed on the basis of the original base station. The computing power sinking device can communicate with the base station, and the two can communicate directly or indirectly through other devices.

[0061] For example, please refer to Figure 2 , Figure 2 FIG. 1 is a schematic diagram of a communication system architecture applied to a C-V2X scenario in an embodiment of the present disclosure. Figure 2 In the architecture shown, the terminal and base station side infrastructure are Figure 1 That is, each terminal can directly communicate with each other through the PC5 interface. Any terminal can communicate with the computing power sinking base station through the Uu interface, which will not be repeated. Figure 2As shown, in the C-V2X scenario, the computing power base station includes a base station, a mirror shunt device, and a computing power sinking device. Among them, the computing power sinking device and the base station can achieve indirect communication through the mirror shunt device. It should be understood that the mirror shunt device is only exemplary. In actual scenarios, there may be no such device or other possible devices to achieve the communication capability between the computing power sinking device and the base station. In this way, on the one hand, the computing power sinking device can obtain and send terminal-side related data through the mirror shunt device, such as C-V2X service data between terminals, that is, related data transmitted through Uu communication; on the other hand, the computing power sinking device can also obtain data (such as perception data) transmitted by the road side unit (Road Side Unit, RSU) through Ethernet optical fiber (ie ETH) or Uu communication, so that perception fusion calculation can be realized based on this, and the calculation results can be broadcast through the RSU, so that vehicles or other terminals can receive these broadcasts after passing through the RSU.

[0062] In addition, in scenarios such as C-V2X, RSU is also involved. RSU is generally deployed on both sides of the road and can communicate with network-side devices through Uu interface (i.e. Uu communication) or wired Ethernet interface (such as optical fiber). In addition, RSU can also obtain road information in real time through roadside sensing devices, or receive notification messages from the network side and broadcast these messages / information to passing terminals through PC5 communication.

[0063] The following is a detailed description of the communication switching method provided by the present disclosure. Figure 3 , Figure 3 The following is a schematic diagram of an interactive process of a communication switching method provided by an embodiment of the present disclosure. Figure 3 As shown, the method includes:

[0064] S302, the receiving terminal sends a first message to the computing power sinking device, wherein the first message is used to request that a first communication mode between the receiving terminal and the sending terminal be switched to a second communication mode.

[0065] The receiving terminal involved in the present disclosure can be any terminal in the actual implementation scenario. In the actual communication scenario, the two communicating parties involve a sending terminal and a receiving terminal, wherein the sending terminal refers to a terminal on one side that sends information during the communication process (i.e., the role of the information sender), and the receiving terminal refers to a terminal on one side that receives information during the communication process (i.e., the role of the information receiver). It should be understood that in the actual scenario, the roles of the sending terminal and the receiving terminal can be interchanged. For example, when terminal 1 sends data to terminal 2 (including one-to-one sending, one-to-many sending, and the sending method is not limited), terminal 1 is a sending terminal and terminal 2 is a receiving terminal; conversely, when terminal 2 sends data to terminal 1, terminal 2 is a sending terminal and terminal 1 is a receiving terminal. It can be understood that a large number of terminals are involved in the actual scenario. For ease of understanding, the present disclosure takes a pair of transceiver terminals as an example for specific explanation. In addition, the present disclosure has no special restrictions on the type of messages or information / data transmitted between the two communicating parties. For ease of distinction, they are collectively referred to as business messages.

[0066] In the present disclosure, the terminal can support at least two communication modes, which can be specifically expressed as: supporting both the first communication mode and the second communication mode. Exemplarily, the first communication mode may be direct communication or network communication, and the second communication mode is network communication, and the first network communication is different from the second network communication. That is, the second communication mode requires at least the participation and support of the base station. In one possible embodiment, as described in the C-V2X scenario above, the first communication mode may include but is not limited to PC5 communication, and the second communication mode may include but is not limited to Uu communication. For ease of explanation, this scenario will be used as an example for illustrative explanation below. In another possible implementation, the first communication mode may be 4G network communication (requiring support from 4G base stations), and the second network communication mode may be 5G network communication (requiring support from 5G base stations).

[0067] It should be noted that the present disclosure has no special restrictions on the triggering condition for the receiving terminal to send the first message (i.e., when the receiving terminal sends the first message). However, in general, the receiving terminal can send the first message when the network quality of the first communication mode is poor to request to switch the communication mode to improve the communication quality. This will not be elaborated here, and will be described in detail later.

[0068] like Figure 3 As shown, at this time, the sending terminal and the receiving terminal communicate with each other through the first communication mode.

[0069] S304, the computing power sinking device receives a first message from the receiving terminal.

[0070] The first message is used to request to switch the first communication mode between the receiving terminal and the sending terminal to the second communication mode.

[0071] As mentioned above, the computing power sinking device (as the network side, which can reuse the base station capabilities) can communicate with any terminal through the Uu interface, so that the first message can be transmitted through the Uu communication method. That is, in the present disclosure, the first message is used as a trigger message of the communication switching decision scheme, and is transmitted through the second communication method, which reduces the probability of packet loss or bit error in the first message, and can ensure the safe and stable transmission of the first message.

[0072] S306: When the first information meets the preset first condition, the computing power sinking device sends a second message to the receiving terminal and the sending terminal, and the second message is used to instruct the receiving terminal to communicate with the sending terminal through the second communication method.

[0073] In this step, the computing power sinking device needs to comprehensively judge the relevant information of the second communication mode to avoid the second communication mode being unable to guarantee normal communication requirements, thereby causing the switching process to not only fail to improve the communication quality but also increase the possibility of invalid resource overhead on the base station side. Based on this, in the present disclosure, after receiving the first message, the computing power sinking device must make a decision on whether to switch to the second communication mode based on the first information.

[0074] In the present disclosure, the second communication mode is network communication, which needs to be implemented with the help of a base station. Therefore, in the actual implementation scenario, the following aspects can be considered: network quality issues, whether the base station supports it, and whether it is necessary to switch the posture relationship between the sender and the receiver. Among them, the network quality issue is directly related to the communication quality after the switch, and it is necessary to determine whether the communication requirements after the switch can be met, which will be explained in detail later. Network communication requires the base station to provide resource support. Therefore, it is necessary to determine whether the base station has idle resources or whether the resources are saturated, whether the base station allows new business access, and other issues. The posture relationship between the sender and the receiver is mainly considered to be in the scenario of vehicle-to-everything connectivity, where the terminal is real-time and moves quickly. If the transceiver terminal is only briefly gathered (for example, two cars driving in opposite directions in the opposite lane) or the distance is far (the farther the distance, the lower the necessity of communication), there is no need to switch its communication process to save system overhead.

[0075] Based on this, the first information involved in the present disclosure may include but is not limited to at least one of the following: network quality information of the second communication mode, base station information, and a position relationship between the transmitting terminal and the receiving terminal.

[0076] Specifically, the network quality information may include but is not limited to at least one of the following: network type, reference signal receiving power (RSRP), signal to interference plus noise ratio (SINR), received signal strength indication (RSSI). Among them, the network type can be expressed as NT, different network types may correspond to different network quality assessment methods, and the resulting methods of whether the first condition is met may also be different. The network types involved in the present disclosure may include but are not limited to at least one of the following: 5G-SA, 5G-NSA, LTE, etc., without exhaustive enumeration.

[0077] The base station information is used to indicate the support of the second communication mode by the base station. Specifically, the base station information may include but is not limited to at least one of the following: information related to whether the base station resources are saturated, information related to whether the base station allows new access, the amount of remaining resources or idle resources of the base station, etc., without exhaustive enumeration.

[0078] The posture relationship between the transmitting terminal and the receiving terminal is used to indicate the adaptation of the transmitting terminal and the receiving terminal to the second communication method, and the posture relationship includes at least one of the following: distance relationship and heading relationship. Among them, the distance relationship may include but is not limited to: the position of the transmitting terminal and the position of the receiving terminal. That is, the distance relationship can be characterized by the position between the transmitting and receiving terminals; the closer the distance, the higher the necessity and frequency of communication, so it is necessary to optimize the communication, that is, to switch the communication; on the contrary, if the distance is farther, the necessity and frequency of communication are lower, and the necessity of communication switching is also lower. In this case, the computing power sinking device can make a specific decision to determine whether there is no need to switch. The heading relationship can specifically characterize whether the terminal's forward direction is consistent; it can specifically include: the heading angle of the receiving terminal and the heading angle of the transmitting terminal. Specifically, if the directions of travel between the sender and receiver are inconsistent, there is a greater probability that they will gradually move away from each other. The lower the necessity and frequency of communication, the lower the necessity of communication switching. In this case, the computing power sinking device can make a specific decision to determine whether switching is necessary. On the contrary, if the directions of travel between the sender and receiver are consistent, the sender and receiver may continue to communicate, and the higher the necessity and frequency of communication, the more necessary it is to optimize their communication, that is, to switch their communication. In other words, the computing power sinking device can make decisions and control the switching of communication modes based on the posture relationship between the sender and receiver, and will no longer switch the communication mode for some information that is not necessary to use the second communication mode for communication optimization. This is equivalent to filtering and screening messages transmitted using the second communication mode, improving the resource utilization of the second communication mode, and reducing the overall communication overhead of the base station and the system.

[0079] It should be noted that the first information is data that can be obtained by the computing power sinking device (or understood as the network side). The present disclosure has no special restrictions on how the first information is obtained, which will be explained in detail in conjunction with the embodiments below.

[0080] In the present disclosure, the first condition is used to indicate the communication condition of the second communication mode. The first condition can be preset by user. It should be noted that the first condition matches the type of the first information. For example, when the preset first condition includes base station related conditions, the first information includes base station information; for another example, when the first condition includes relevant requirements for network quality, the first information includes network quality information.

[0081] Illustratively, the first condition involved in the present disclosure may include but is not limited to at least one of the following: condition 1, condition 2, and condition 3. Each of the conditions is described below.

[0082] Condition 1: The network quality of the second communication mode meets the communication requirements. In actual scenarios, this condition can be customized and can be configured: network quality information, calculation method of network quality evaluation value, specific communication requirements corresponding to network quality evaluation value (such as threshold or other conditions), etc., which are not exhaustive. The following text will explain in detail with reference to the embodiments. As described above, when the first condition includes condition 1, the first information includes at least: network quality information.

[0083] Condition 2: The base station resources meet the resource requirements of the second communication mode, and / or the base station supports the access of new services. Similarly, the resource requirements in condition 2 can also be customized, for example, whether the remaining resources of the base station are greater than or equal to the amount of base station resources required by the second communication mode; if greater than or equal to, the switching requirements are met on this item, that is, condition 2 is met; otherwise, condition 2 is not met. For another example, whether the base station supports the access of new services, if allowed, switching is allowed on this item; otherwise, condition 2 is not met. As mentioned above, when the first condition includes condition 2, the first information at least includes: base station information.

[0084] Condition 3: The distance between the transmitting terminal and the receiving terminal is less than the first threshold and the headings are consistent. As mentioned above, the distance and heading between the sender and the receiver have a certain impact on the necessity of communication switching. There is no need to switch communications between the two communicating parties that are traveling in the opposite direction or at a long distance. That is, the communication messages of the second communication mode are filtered and screened to reduce unnecessary message forwarding, improve the utilization rate of Uu channel resources, and reduce system overhead. As mentioned above, when the first condition includes condition 3, the first information includes at least: the aforementioned posture information.

[0085] Based on the above-mentioned first condition (one or more of conditions 1 to 3), the computing power sinking device can decide whether it is necessary to switch the communication mode between the receiving terminal and the sending terminal. In general, when the network quality of the second communication mode is good, the base station resources can support it, and the distance between the two communicating parties is close and non-reverse, that is, when the first information meets the first condition, it can be switched to the second communication mode with better network quality to optimize the message transmission between the two communicating parties. In this case, the computing power sinking device sends a second message to the communicating parties, that is, notifies the receiving terminal and the sending terminal through the second communication mode, so that the two can subsequently transmit messages based on the second communication mode.

[0086] On the contrary, if the first information does not meet the first condition, the computing power sinking device determines that no switching is required. In this case, no other processing is required, or a feedback message can be sent to the receiving terminal (ie, the initiator) to inform it of the decision result (ie, no switching).

[0087] Based on S306, for the sending terminal, when it receives the second message, the subsequent service messages for the receiving terminal are no longer sent through the PC5 interface, but are transmitted to the computing power sinking device through the Uu interface, and forwarded to the receiving terminal by the computing power sinking device.

[0088] S308, the receiving terminal receives a second message from the computing power sinking device, the second message is used to indicate that the receiving terminal communicates with the sending terminal through a second communication method. The second message is sent when the first information meets a preset first condition, and the first condition is used to indicate a communication condition of the second communication method.

[0089] For the receiving terminal, when it receives the second message, it can be informed that the second communication method will be adopted to receive messages from the sending terminal in the future. At this time, the receiving terminal can send a subscription request to the computing power sinking device and request to establish a subscription relationship. In this way, the computing power sinking device can receive the subscription request from the receiving terminal and establish a subscription relationship (that is, the subscription relationship between the receiving terminal and the sending terminal). In this way, when the computing power sinking device subsequently receives a business message from the sending terminal, it can forward the business message to the receiving terminal through the second communication interface based on the subscription relationship.

[0090] At this time, if Figure 3 As shown, the sending terminal and the receiving terminal communicate with each other through the second communication mode. Specifically, the process of communicating the service message between the receiving terminal and the sending terminal (ie, the second communication mode) may include the following process:

[0091] The sending terminal sends the service message to the computing power sinking device through the Uu interface.

[0092] The computing power sinking device receives the service message from the sending terminal, and based on the subscription relationship, forwards the service message to the receiving terminal through the second communication interface.

[0093] The receiving terminal receives the business message forwarded by the computing power sinking device based on the second communication interface, and the business message is the business message transmitted by the sending terminal to the receiving terminal.

[0094] It should be understood that, for the receiving terminal, the communication switching method executed by it includes S302 and S308. For the computing power sinking device, the communication switching method executed by it includes S304 and S306.

[0095] In summary, after receiving the first message from the receiving terminal requesting to switch the communication mode, the computing power sinking device in the present disclosure sends a second message to the receiving terminal and the sending terminal when the first information meets the preset first condition, so as to instruct the receiving terminal to communicate with the sending terminal through the second communication mode, that is, to instruct to switch the communication mode. In addition, the first condition is used to indicate the communication condition of the second communication mode. In this way, when the terminal believes that the first communication mode does not meet the communication requirements, and the computing power sinking device side determines that the second communication mode can meet the communication requirements, the computing power sinking device can make a decision and can realize the smooth switching of the communication mode between the terminals. In other words, the present disclosure is to realize the decision and switching of the communication mode by the computing power sinking device. This process does not need to occupy the terminal computing power and resources, avoids the adverse effect on the terminal communication quality, and the computing power sinking device can communicate with the terminal safely and smoothly through the second communication mode, and also ensures the effective sending of the communication switching instruction, reducing the switching failure rate. In summary, the technical solution provided by the present disclosure can avoid the large-scale occupation of terminal computing power and resources, avoid adverse effects on the terminal communication quality, have a low failure rate, and can achieve smooth switching of communication modes between terminals, ensuring secure and stable communications.

[0096] The following describes in detail possible decision-making methods performed by the computing power sinking device to specifically determine whether the first information meets the first condition.

[0097] For the above condition 1, a decision can be made based on the size relationship between the specific network quality evaluation value and the relevant threshold value. Alternatively, a threshold judgment or condition judgment can be directly performed based on the specific network quality information to determine whether condition 1 is met.

[0098] Exemplarily, the network quality evaluation value of Uu communication can be determined based on the above one or more network quality information, and then it can be judged whether the network quality evaluation value meets the preset threshold, and then it can be determined whether the network quality meets condition 1. It should be noted that if Figure 1 or Figure 2 As shown, Uu communication requires the participation of the base station, so the network quality evaluation value of Uu communication includes two parts: the network quality evaluation value of the second communication mode between the sending terminal and the base station, and the network quality evaluation value of the second communication mode between the receiving terminal and the base station. In actual scenarios, only when both evaluation values ​​meet the threshold requirements, condition 1 is met.

[0099] Based on this, the present disclosure provides an exemplary embodiment. In this embodiment, condition 1 may be specifically: the network quality evaluation value of the second communication mode between the transmitting terminal and the base station is greater than or equal to a preset second threshold; and the network quality evaluation value of the second communication mode between the receiving terminal and the base station is greater than or equal to the second threshold. Among them, the thresholds of the two network quality evaluation values ​​may be the same, that is, both are the second threshold, or, in other possible embodiments, the two thresholds may also be different, which will not be repeated.

[0100] The network quality assessment value is obtained based on weighted processing of at least one type of network quality information, wherein the network quality information includes at least one of the following: network type, reference signal received power RSRP, signal-to-noise ratio SINR, and received signal strength indication RSSI.

[0101] At this time, the network quality evaluation value and the above network quality information satisfy the following relationship:

[0102] NQI=w1*NT+w2*RSRP+w3*SRNR+w4*RSSI

[0103] Among them, NQI represents network quality, NT represents network type, and w1, w2, w3, and w4 represent the weights of various indicators. It should be understood that the weights of various indicators can be customized and dynamically adjusted according to actual conditions, and there are no special restrictions on this. Among them, the value of NT varies based on different network types. In actual implementation scenarios, the corresponding relationship between each network type and the NT value can be preset.

[0104] Regarding condition 2 in the above-mentioned first condition, it can be determined that condition 2 is met when the base station has remaining resources or the remaining resources of the base station are greater than the resources required by the second communication mode, and the base station supports access to other services.

[0105] In a specific implementation scenario, the computing power sinking device can obtain the above base station information in a specific way by querying the base station to obtain the base station information. The base station information includes: base station resource information, new service access support information, which will not be repeated. Specifically, the query method can be through, for example Figure 2 The mirrored traffic distribution device shown actively sends a query request and receives a query result; alternatively, the base station may actively (for example, regularly, intermittently, or continuously) send the base station information to the computing power sinking device.

[0106] Regarding condition 3 in the above-mentioned first condition, condition 3 is that the distance between the transmitting terminal and the receiving terminal is less than the first threshold and the headings are consistent. At this time, it is also necessary to judge the heading relationship based on whether the respective positional relationships between the transmitting and receiving parties are close, and based on the heading angle between the transmitting and receiving parties. Therefore, in a possible embodiment, condition 3 can be specifically expressed as: the distance between the transmitting terminal and the receiving terminal is less than the first threshold, and the heading angle difference between the transmitting terminal and the receiving terminal is less than the third threshold.

[0107] When implementing this step, the computing power sinking device can determine the distance between the receiving terminal and the sending terminal based on the first information, that is, the location of the receiving terminal (which can be expressed as coordinates) and the location of the sending terminal. When the distance is less than the first threshold, it is determined that the distance between the two is close. The relationship between the distance and the location of the two satisfies the following relationship:

[0108] D = sqrt((X 1 -X 2 ) 2 +(Y 1 -Y 2 ) 2 )

[0109] Where D represents the distance between the receiving terminal and the transmitting terminal, and the sqrt function represents the calculation of the square root. 1 , Y 1 ) represents the longitude and latitude of the receiving terminal, (X 2 , Y 2 ) represents the longitude and latitude coordinates of the sending terminal.

[0110] In addition, the computing power sinking device can also determine the heading angle difference between the receiving terminal and the sending terminal based on the first information, that is, the heading angle of the two terminals, and then, when the heading angle difference is greater than a third threshold (for example, 180 degrees or a range near 180 degrees), it is confirmed that the headings of the two terminals are consistent. At this time, the heading angle difference and the heading angles of the sending and receiving terminals satisfy the following relationship:

[0111] Δθ=θ 1 -θ 2

[0112] Among them, Δθ represents the heading angle difference between the receiving terminal and the transmitting terminal, θ 1 is the heading angle of the receiving terminal, θ 2 is the heading angle of the sending terminal.

[0113] In this way, when D is less than or equal to the first threshold and Δθ is less than or equal to the third threshold, it is determined that condition 3 is satisfied.

[0114] It should be understood that the above-mentioned first condition can be one or more of condition 1, condition 2, and condition 3, that is, the above-mentioned conditions 1 to 3 can be used in combination, and the present disclosure has no special restrictions on the order of combined use, etc., and can be executed sequentially or in parallel in actual scenarios. For example, the computing power sinking device can judge condition 1, condition 2, and condition 3 in sequence (or can judge in parallel). When all three are met, it is determined that the first information meets the first condition, and the communication mode between the communicating parties is switched.

[0115] In the actual implementation scenario, when the computing power sinking device implements the relevant decisions of the above conditions 1 and 3, it needs to obtain the first information related to the receiving terminal and the sending terminal, including: the network quality information involved in condition 1, and / or the position and heading angle involved in condition 3. For this part of information, it can be realized by terminal reporting. Similarly, this part of the content can be realized by two methods: active reporting by the terminal or requesting reporting by the computing power sinking device.

[0116] In an exemplary embodiment, the computing power sinking device may request the sending terminal and / or the receiving terminal to report the first information.

[0117] At this time, for the computing power sinking device, the method further includes: the computing power sinking device sends a third message to the first terminal, the third message is used to indicate the second information reported to the first terminal; the first terminal includes: the sending terminal and / or the receiving terminal. And, the computing power sinking device receives a fourth message from the first terminal, the fourth message carries the second information; the second information includes at least one of the following: location information, heading angle, and network quality information of the second communication method.

[0118] Correspondingly, for any first terminal (receiving terminal or sending terminal), it is possible to: receive a third message from the computing power sinking device, the third message is used to indicate the second information reported to the receiving terminal. And, send a fourth message to the computing power sinking device, the fourth message carries the second information; the second information includes at least one of the following: location information, heading angle, and network quality information of the second communication mode.

[0119] In this way, through the above-mentioned message sending and receiving, the computing power sinking device can obtain the required first information, and complete the subsequent judgment of whether the first condition is met and the communication switching decision.

[0120] In addition to this, in another possible embodiment, the receiving terminal, as the requesting party of the communication switching method, can actively report the first information related to itself (recorded as the second information) to the computing power sinking device. At this time, the first message involved in the aforementioned S302 step can carry the second information of the receiving terminal; wherein the second information includes at least one of the following: location information, heading angle, and network quality information of the second communication method. In this embodiment, the computing power sinking device still needs to interact with the sending terminal regarding the first information related to the sending terminal side, that is, send a third message to the sending terminal, and receive the fourth message fed back by it, so as to obtain the first information related to the sending terminal side. The implementation method is the same as the previous embodiment and will not be repeated.

[0121] In addition, as mentioned above, the present disclosure has no special restrictions on the triggering conditions for the receiving terminal side to send the first message in step S302 (i.e., when the receiving terminal sends the first message). The receiving terminal can send the first message to the computing power sinking device based on any custom conditions, for example, the current communication network quality is poor (i.e., does not meet the preset standard or threshold), the current received information interval is too long, the current communication process has packet loss or bit error, etc. One or more, not to be exhaustive.

[0122] For ease of understanding, the present disclosure provides a possible implementation method, which is described in detail below.

[0123] Exemplarily, the receiving terminal can monitor the network quality of the first communication mode between the sending terminal and the receiving terminal. In the actual implementation scenario, the monitoring behavior can be performed continuously, periodically or at intervals, and the present disclosure has no particular restrictions on this. In an exemplary embodiment, when the receiving terminal and the sending terminal switch to the second communication mode, the receiving terminal can still continue to monitor the network quality of the first communication mode, so as to switch back to the first communication mode when the network quality of the first communication mode is better. This will be described in detail later.

[0124] Furthermore, when the network quality of the first communication mode meets the preset third condition, the first message is sent to the computing power sinking device; wherein the third condition is used to indicate that the first communication mode does not meet the communication requirements. That is, when the receiving terminal finds that the network quality of PC5 communication does not meet the communication requirements, the first message can be sent to the computing power sinking device.

[0125] In a specific implementation scenario, communication requirements can be customized. For example, you can customize the calculation method of network quality (for example) and compare the calculation result with the preset threshold. If it is less than or equal to the threshold, it indicates that the current network quality does not meet the communication requirements, and a first message is sent to the computing power sinking device. For another example, it can also be determined whether the network delay exceeds the delay threshold, so that when it exceeds, it is considered that the communication requirements are not met, and a first message is sent to the computing power sinking device. For another example, it can also be determined whether the packet loss rate exceeds the packet loss rate threshold, so that when it exceeds, it is considered that the communication requirements are not met, and a first message is sent to the computing power sinking device. This is not exhaustive.

[0126] In an exemplary embodiment, the receiving terminal can receive the service message of the sending terminal through the PC5 interface, monitor the network quality of the PC5 communication in the process, and comprehensively judge the network quality of the PC5 communication based on the packet loss rate and the network delay. Specifically, the network quality measurement value of the PC5 communication can be the weighted processing result of the packet loss rate and the network delay, and the weighted processing method includes but is not limited to: weighted sum, weighted average, etc. At this time, in a possible situation, the network quality measurement value of the PC5 communication can satisfy the following relationship with the packet loss rate and the network delay:

[0127] NQ=w1*P loss +w2*N delay

[0128] Among them, NQ stands for network quality, P loss Indicates the packet loss rate (can be counted based on msgCnt), N delay represents the network delay, w1 and w2 are weight coefficients, which are used to adjust the importance of the two indicators in the comprehensive evaluation.

[0129] Based on this, when the receiving terminal determines that NQ is greater than or equal to the preset fourth threshold, a first message is sent to the computing power sinking device.

[0130] In this embodiment, the packet loss rate and network delay are information that the receiving terminal can easily and quickly obtain during the normal process of receiving service messages, and a simple weighted processing calculation and threshold judgment are performed. The entire process requires very little computing power or other resources, that is, the judgment process described above places very little computing power burden on the receiving terminal. Compared with the solution in which the sending terminal makes the judgment, the receiving terminal can complete the network quality judgment of the current communication process with less computing power and resource costs.

[0131] Moreover, the present disclosure is different from the solution in the related art in which the terminal implements the switching decision. The receiving terminal only serves as the trigger of the switching decision. When the network quality of the direct communication is found to be poor, it will trigger the request for the computing power sinking device to decide whether to switch the communication mode. For the entire communication switching process, the actual communication switching decision is actually processed and determined by the computing power sinking device, and the receiving terminal only initiates the request as the trigger of the communication switching process.

[0132] It should be understood that, based on any of the aforementioned embodiments, the computing power sinking device in the present disclosure can serve as a decision-maker for communication switching, control the communication mode between any pair of communication terminals, and decide whether to switch direct communication to network communication based on actual conditions. This not only meets the low latency requirements of V2X messages, but also reasonably allocates the system computing overhead brought about by the switch, prevents the terminal from being overloaded with computing pressure, and enables the system to have better overall performance. Moreover, in this process, the computing power sinking device does not make a decision directly after receiving the request, but processes it in a targeted manner based on actual conditions. For example, when considering condition 3, the computing power sinking device will perform message filtering and screening processing, reduce some unnecessary message forwarding, improve the utilization rate of Uu channel resources, and reduce system overhead; for another example, when considering condition 2, thirdly, the computing power sinking device will also detect the occupancy of base station resources to prevent too many PC5 broadcast messages from switching the Uu port, causing congestion in other base station services.

[0133] In addition to the above implementation of switching from the first communication mode to the second communication mode, the present disclosure further provides a reverse switching solution for switching from the second communication mode (network communication) to the first communication mode (direct communication).

[0134] In a possible embodiment, the receiving terminal may detect the network quality of the first communication mode and report the result, and then the computing power sinking device may decide whether to switch back in the reverse direction. At this time, the method may further include:

[0135] For the receiving terminal, the method further includes: when the network quality of the first communication mode meets the preset second condition, sending a fifth message to the computing power sinking device, the fifth message is used to request to stop the second communication mode between the receiving terminal and the sending terminal; wherein the second condition is used to indicate that the first communication mode meets the communication requirements. After that, the receiving terminal can receive the service message from the sending terminal through the first communication mode.

[0136] For the computing power sinking device, the method further includes:

[0137] The computing power sinking device receives a fifth message from the receiving terminal, the fifth message being used to request to stop the second communication mode between the receiving terminal and the sending terminal; the fifth message is sent by the receiving terminal when it detects that the network quality of the first communication mode meets a second condition; wherein the second condition is used to indicate that the first communication mode meets the communication requirements;

[0138] The computing power sinking device notifies the receiving terminal and the sending terminal to deactivate the second communication mode.

[0139] In this embodiment, the receiving terminal and the sending terminal communicate and transmit business messages via the second communication mode. During this process, the receiving terminal can continue to monitor the communication quality of the first communication mode, so that when the communication condition of the first communication mode improves (that is, when the second condition is met), it can switch back to the first communication mode to continue communication.

[0140] In specific implementation, the fifth message sent by the receiving terminal to the computing power sinking device can be directly used to request to stop the second communication mode and switch back to the first communication mode. And / or, the fifth message can also carry relevant information of the first communication mode, such as communication quality information, packet loss rate, network delay, etc.

[0141] For the computing power sinking device, after receiving the fifth message, it can directly determine to switch back to the first communication mode, or it can also decide whether to switch back to the first communication mode based on the relevant information of the first communication mode carried in the fifth message. For example, the decision-making method can be, but is not limited to, determining the network quality measurement value of the first communication mode (such as the NQ mentioned above) based on the relevant information of the first communication mode, and then when the network quality measurement value of the first communication mode is less than the preset corresponding threshold value (such as the fourth threshold value), the decision is made to switch back to the first communication mode. No further details are given.

[0142] In this embodiment, the receiving terminal is responsible for the network quality measurement task of the first communication mode. In other possible embodiments, the process can also be implemented by the initiating terminal or the computing power sinking device.

[0143] Therefore, in a possible embodiment, the computing power sinking device can determine whether to switch back to the first communication mode. At this time, the computing power sinking device can also include the following processing: monitoring the network quality of the first communication mode; when the network quality of the first communication mode meets the second condition, notifying the receiving terminal and the sending terminal to deactivate the second communication mode; wherein the second condition is used to indicate that the first communication mode meets the communication requirements.

[0144] Regardless of the method adopted, when the computing power sinking device decides to switch the communication mode between the receiving terminal and the sending terminal back to the first communication mode (direct communication), the computing power sinking device can notify the receiving terminal and the sending terminal based on the current second communication mode. Specifically, it can include: the computing power sinking device can notify the sending terminal to deactivate the second communication mode through the second communication mode; and / or the computing power sinking device can notify the receiving terminal to end the message subscription of the second communication mode through the second communication mode.

[0145] In addition to this, in a possible embodiment, the first communication mode between the sending terminal and the receiving terminal has been restored, and the sending terminal and the receiving terminal can communicate directly. At this time, the receiving terminal can also notify the sending terminal to deactivate the second communication mode through the first communication mode.

[0146] Among them, after notifying the sending terminal to deactivate the second communication mode, the sending terminal no longer sends service messages to the computing power sinking device through the Uu interface, but directly sends service messages through the PC5 interface. Correspondingly, the receiving terminal no longer subscribes to the messages of the sending terminal through the Uu port, but receives service messages through the PC5 interface. For the computing power sinking device, the computing power sinking device can close or cancel the subscription relationship between the receiving terminal and the sending terminal, and release the relevant communication resources on the base station side.

[0147] In order to understand this solution more clearly, the following takes the first communication mode as PC5 communication and the second communication mode as Uu communication as an example to explain in detail how the computing power sinking device in this solution decides and controls the communication switching between terminals. For the sake of convenience, the following takes the receiving terminal as UE1 and the sending terminal as UE2 as an example to explain in detail.

[0148] In a possible embodiment, the present disclosure provides a communication switching method for switching from PC5 communication to Uu communication.

[0149] Please refer to Figure 4 , Figure 4 A schematic diagram of an interaction flow of another communication switching method provided by an embodiment of the present disclosure, such as Figure 4 As shown, the method comprises the following steps:

[0150] Step 1: UE1 receives a message from UE2 (i.e., the service message mentioned above) through the PC5 interface. After statistical calculation, it is found that the network quality of PC5 communication continues to deteriorate, and the network quality measurement value of PC5 communication is greater than or equal to the fourth threshold (i.e., when the third condition is met), then UE1 will initiate a communication channel switching request to the computing power sinking device (i.e., the first message mentioned above in this article), and apply to switch the communication channel of the V2X service from PC5 communication to Uu communication.

[0151] The PC5 network quality measurement value (i.e., NQ in the previous text) is obtained by weighted summation of packet loss rate and network delay. Please refer to the previous text and do not repeat it.

[0152] In actual implementation, the information carried in the first message may include but is not limited to: at least one information such as the ID of the UE1 requesting the handover and the ID of the message sender UE2, location information GNSS, heading angle, and network quality of Uu communication.

[0153] Step 2: The computing power sinking device sends a communication channel switching request message (i.e. the third message in the previous text) to the message sending end UE2, which requires UE2 to report its location information, heading angle, Uu port network quality and other information.

[0154] Step 3, the computing power sinking device uses the first information reported by UE1 and UE2, including at least one of the real-time resident network type (NT), RSRP, SINR, RSSI, etc., to determine whether the network quality of the current Uu communication between the two parties meets the switching requirements. That is, it is determined whether condition 1 of the first condition is met. The judgment method can be referred to the previous text and will not be repeated.

[0155] Step 4: The computing power sinking device queries the base station whether the resources are saturated and whether new services are allowed to access. That is, it is determined whether condition 2 of the first condition is met. The determination method can be referred to in the previous text and will not be repeated here.

[0156] Step 5: The computing power sinking device calculates the distance between the two UEs and determines whether the distance D is less than a threshold value (i.e., the first threshold value). That is, it determines whether the distance requirement of condition 3 in the first condition is met. The determination method can be referred to in the previous text and will not be repeated.

[0157] It can be understood that the greater the distance between UEs, the less necessary it is to maintain the transmission of their messages. Therefore, if the distance between the two is greater than the distance threshold (i.e., the first threshold), the computing power sinking device may not allow network switching, which is more conducive to saving system overhead.

[0158] Step 6: The computing power sinking device calculates the heading angle difference, and determines whether UE1 and UE2 are UEs in the opposite lanes by the heading angle difference (whether it is less than 180 degrees or its vicinity). That is, it determines whether the heading requirement of condition 3 in the first condition is met. The judgment method can be referred to the previous text and will not be repeated.

[0159] Step 7: If the requirements of steps 3 to 5 above are met (i.e., the first requirement), the computing power sinking device makes a decision to allow switching. At this time, UE2 can report the V2X message (i.e., the service message mentioned above) through the Uu interface, and UE1 obtains this message by subscription, thereby completing the service message communication channel switching.

[0160] In another possible embodiment, the present disclosure further provides a communication switching method for switching back from Uu communication to PC5 communication.

[0161] Please refer to Figure 5 , Figure 5 A schematic diagram of an interaction flow of another communication switching method provided by an embodiment of the present disclosure, such as Figure 5 As shown, the method comprises the following steps:

[0162] Step 1: After UE1 and UE2 switch to Uu communication, UE1 can still monitor the network quality of PC5 channel at a certain frequency. Therefore, when it is found that the network measurement value of PC5 communication is lower than the threshold value of switching back to PC5 communication channel (that is, when the second condition is met), PC5 communication can be restored between UE1 and UE2.

[0163] Step 2: UE1 sends a notification message (i.e. the fifth message above) to the computing power sinking device to end the Uu port communication.

[0164] Step 3: The computing power sinking device can notify UE2 to stop sending Uu port messages, that is, stop Uu communication.

[0165] Step 4: The computing power sinking device notifies UE1 to end the Uu port message subscription, that is, cancel the Uu port message subscription.

[0166] In summary, when the network quality of the PC5 communication channel between UEs continues to deteriorate and the network quality measurement value is greater than the threshold, a communication channel switching request will be initiated to the computing power sinking device, requesting to switch the UE's communication channel from the PC5 port to the Uu port; the computing power sinking device will collect location information, heading angle, and Uu port network quality, and determine whether the Uu port network quality meets the switching requirements; the computing power sinking device will query the base station resource status to determine whether the base station resources meet the switching requirements; invalid message screening and filtering will be performed through the calculation of the relationship between the location information and heading angle between Uu; the PC5 channel network quality will be continuously monitored, and when the measurement value is lower than the threshold value, the computing power sinking device will notify the UE to release the Uu communication channel and switch back to the original PC5 communication channel.

[0167] Based on this, compared with the solution in the related art where the UE controls the communication mode switching decision, the technical solution provided by the present disclosure has at least the following technical advantages:

[0168] First of all, the present invention uses a computing power base station (further referred to as a computing power sinking device) to control the switching decision process, thereby ensuring the low latency requirement of V2X messages and reasonably allocating the system computing overhead brought about by the switching, so that the system has better performance.

[0169] Secondly, the computing power sinking device will perform message filtering and screening (such as condition 3 above), reducing some unnecessary message forwarding and improving the utilization rate of the system Uu channel resources.

[0170] Furthermore, the computing power sinking device will also detect the resource occupancy of the base station (such as condition 2 above) to prevent too many PC5 broadcast messages from switching the Uu port, causing congestion of other base station services, and take into account the network signal quality of the Uu port to prevent meaningless switching.

[0171] In addition, in the related art, when the network quality of PC5 communication is already poor, the PC5 channel is still relied on to implement the transmission of UE switching instructions, which increases the probability of switching failure. In contrast, the present disclosure uses the Uu port for channel switching control, which is more reasonable and has a higher success rate.

[0172] The present disclosure also provides a computing power sinking device. Figure 6 A structural block diagram of a computing power sinking device provided in an embodiment of the present disclosure, such as Figure 6 As shown, the computing power sinking device 600 includes:

[0173] The receiving unit 610 is configured to receive a first message from a receiving terminal, wherein the first message is used to request that a first communication mode between the receiving terminal and a sending terminal be switched to a second communication mode;

[0174] The sending unit 620 is configured to send a second message to the receiving terminal and the sending terminal when the first information meets a preset first condition, wherein the second message is used to instruct the receiving terminal to communicate with the sending terminal through the second communication mode;

[0175] The first condition is used to indicate a communication condition of the second communication mode.

[0176] In an exemplary embodiment, the first communication mode includes PC5 communication, and the second communication mode includes: Uu communication;

[0177] The first information includes at least one of the following: network quality information of the second communication mode, base station information, and a position relationship between the sending terminal and the receiving terminal;

[0178] The base station information is used to indicate the support status of the base station for the second communication mode;

[0179] The posture relationship is used to indicate the adaptation status of the transmitting terminal and the receiving terminal to the second communication mode, and the posture relationship includes at least one of the following: a distance relationship and a heading relationship.

[0180] In an exemplary embodiment, the first condition includes at least one of the following:

[0181] The network quality of the second communication mode meets the communication requirements;

[0182] The base station resources meet the resource requirements of the second communication mode, and / or the base station supports access to new services;

[0183] The distance between the transmitting terminal and the receiving terminal is less than a first threshold and the headings are consistent.

[0184] In an exemplary embodiment, the network quality of the second communication mode meets the communication requirements, including:

[0185] The network quality evaluation value of the second communication mode between the sending terminal and the base station is greater than or equal to a preset second threshold; and the network quality evaluation value of the second communication mode between the receiving terminal and the base station is greater than or equal to the second threshold;

[0186] The network quality assessment value is obtained based on weighted processing of at least one type of network quality information, wherein the network quality information includes at least one of the following: network type, reference signal received power RSRP, signal-to-noise ratio SINR, and received signal strength indication RSSI.

[0187] In an exemplary embodiment, the distance between the transmitting terminal and the receiving terminal is less than a first threshold and the headings are consistent, including:

[0188] The distance between the transmitting terminal and the receiving terminal is smaller than a first threshold, and the heading angle difference between the transmitting terminal and the receiving terminal is smaller than a third threshold.

[0189] In an exemplary embodiment, the sending unit 620 is further configured to send a third message to the first terminal, where the third message is used to indicate reporting of the second information of the first terminal; the first terminal includes: the sending terminal and / or the receiving terminal;

[0190] The receiving unit 610 is further configured to receive a fourth message from the first terminal, wherein the fourth message carries the second information; the second information includes at least one of the following: location information, heading angle, and network quality information of the second communication mode.

[0191] In an exemplary embodiment, the first message carries second information of the receiving terminal;

[0192] The second information includes at least one of the following: location information, heading angle, and network quality information of the second communication mode.

[0193] In an exemplary embodiment, the device further comprises:

[0194] Query Unit( Figure 6 (not shown) for querying the base station to obtain base station information;

[0195] The base station information includes: base station resource information and new service access support information.

[0196] In an exemplary embodiment, the receiving unit 610 is further configured to receive a subscription request from the receiving terminal and establish a subscription relationship;

[0197] The receiving unit 610 is further configured to receive a service message from the sending terminal;

[0198] The sending unit 620 is further configured to forward the service message to the receiving terminal through the second communication interface based on the subscription relationship.

[0199] In an exemplary embodiment, the device further comprises:

[0200] Monitoring unit ( Figure 6 (not shown) for monitoring the network quality of the first communication mode;

[0201] The sending unit 620 is further configured to notify the receiving terminal and the sending terminal to deactivate the second communication mode when the network quality of the first communication mode meets a second condition;

[0202] The second condition is used to indicate that the first communication mode meets the communication requirements.

[0203] In an exemplary embodiment, the receiving unit 610 is further configured to receive a fifth message from the receiving terminal, the fifth message being used to request to stop the second communication mode between the receiving terminal and the sending terminal; the fifth message is sent by the receiving terminal when it detects that the network quality of the first communication mode meets a second condition; wherein the second condition is used to indicate that the first communication mode meets a communication requirement;

[0204] The sending unit 620 is further configured to notify the receiving terminal and the sending terminal to deactivate the second communication mode.

[0205] In an exemplary embodiment, the sending unit 620 is specifically configured to:

[0206] Notifying the sending terminal to deactivate the second communication mode through the second communication mode;

[0207] The receiving terminal is notified through the second communication method to end the message subscription of the second communication method.

[0208] In an exemplary embodiment, the computing power sinking device is deployed in a computing power base station.

[0209] The present disclosure also provides a terminal, which, when serving as a data / information / receiver, can be used to implement the method executed by the receiving terminal in any of the above embodiments. Figure 7 A structural block diagram of a terminal provided in an embodiment of the present disclosure, such as Figure 7 As shown, the terminal 700 includes:

[0210] A sending unit 710 is used to send a first message to the computing power sinking device, where the first message is used to request that the first communication mode between the terminal (as a receiving terminal) and the sending terminal be switched to a second communication mode;

[0211] A receiving unit 720 is configured to receive a second message from the computing power sinking device, where the second message is used to instruct the terminal to communicate with the sending terminal through the second communication mode;

[0212] The second message is sent when the first information satisfies a preset first condition, and the first condition is used to indicate a communication condition of the second communication mode.

[0213] In an exemplary embodiment, the first communication mode includes PC5 communication, and the second communication mode includes: Uu communication;

[0214] The first information includes at least one of the following: network quality information of the second communication mode, base station information, and a position relationship between the transmitting terminal and the terminal;

[0215] The base station information is used to indicate the support status of the base station for the second communication mode;

[0216] The posture relationship is used to indicate the adaptation status of the transmitting terminal and the terminal to the second communication mode, and the posture relationship includes at least one of the following: a distance relationship and a heading relationship.

[0217] In an exemplary embodiment, the first condition includes at least one of the following:

[0218] The network quality of the second communication mode meets the communication requirements;

[0219] The base station resources meet the resource requirements of the second communication mode, and / or the base station supports access to new services;

[0220] The distance between the sending terminal and the terminal is less than a first threshold and the headings are consistent.

[0221] In an exemplary embodiment, the network quality of the second communication mode meets the communication requirements, including:

[0222] The network quality evaluation value of the second communication mode between the sending terminal and the base station is greater than or equal to a preset second threshold; and the network quality evaluation value of the second communication mode between the terminal and the base station is greater than or equal to the second threshold;

[0223] The network quality assessment value is obtained based on weighted processing of at least one type of network quality information, wherein the network quality information includes at least one of the following: network type, reference signal received power RSRP, signal-to-noise ratio SINR, and received signal strength indication RSSI.

[0224] In an exemplary embodiment, the distance between the sending terminal and the terminal is less than a first threshold and the headings are consistent, including:

[0225] The distance between the transmitting terminal and the terminal is smaller than a first threshold, and the heading angle difference between the transmitting terminal and the terminal is smaller than a third threshold.

[0226] In an exemplary embodiment, the receiving unit 720 is further used to receive a third message from the computing power sinking device, where the third message is used to instruct to report the second information of the terminal;

[0227] The sending unit 710 is also used to send a fourth message to the computing power sinking device, and the fourth message carries the second information; the second information includes at least one of the following: location information, heading angle, and network quality information of the second communication mode.

[0228] In an exemplary embodiment, the first message carries second information of the terminal;

[0229] The second information includes at least one of the following: location information, heading angle, and network quality information of the second communication mode.

[0230] In an exemplary embodiment, the sending unit 710 is further configured to send a subscription request to the computing power sinking device;

[0231] The receiving unit 720 is also used to receive a business message forwarded by the computing power sinking device based on the second communication interface, and the business message is a business message transmitted by the sending terminal to the terminal.

[0232] In an exemplary embodiment, the terminal further includes:

[0233] Monitoring unit ( Figure 7 (not shown) for monitoring the network quality of the first communication mode between the sending terminal and the terminal.

[0234] In an exemplary embodiment, the sending unit 710 is specifically used to send the first message to the computing power sinking device when the network quality of the first communication mode meets a preset third condition; wherein the third condition is used to indicate that the first communication mode does not meet the communication requirements.

[0235] In an exemplary embodiment, the sending unit 710 is further used to send a fifth message to the computing power sinking device when the network quality of the first communication mode meets a preset second condition, wherein the fifth message is used to request to stop the second communication mode between the terminal and the sending terminal; wherein the second condition is used to indicate that the first communication mode meets the communication requirements;

[0236] The receiving unit 720 is further configured to receive a service message from the sending terminal through the first communication mode.

[0237] In an exemplary embodiment, the terminal includes at least one of the following: a vehicle-to-everything (V2X) terminal; a mobile vehicle-to-everything (C-V2X) terminal;

[0238] The terminal is deployed in a vehicle.

[0239] The present disclosure also provides a base station. Figure 8 A structural block diagram of a base station provided in an embodiment of the present disclosure, such as Figure 8 As shown, the base station 800 is deployed with a computing power sinking device 810; the computing power sinking device 810 is used to implement the method performed by the computing power sinking device in any of the above embodiments.

[0240] It should be understood that in actual implementation scenarios, the base station may also include other devices or entities, such as those described above. Figure 2 As shown, no further elaboration is given.

[0241] In an exemplary embodiment, the base station includes but is not limited to: a computing power base station.

[0242] The present disclosure also provides a vehicle. Fig. 9 A structural block diagram of a vehicle provided in an embodiment of the present disclosure, such as Fig. 9 As shown, the vehicle 900 is deployed with a terminal 910; the terminal 910 is used to implement the method executed by the terminal (including: receiving terminal, sending terminal) in any of the above embodiments.

[0243] It should be understood that in actual implementation scenarios, the vehicle may also include other devices or entities, such as a vehicle body, an engine, and other intelligent devices, which will not be elaborated.

[0244] The present disclosure also provides a communication system. Figure 1 or Figure 2, the communication system comprises:

[0245] A computing power sinking device, used to implement the method performed by the computing power sinking device in any of the above embodiments;

[0246] At least two terminals, any one of which is used to implement the method executed by the terminal in any of the above embodiments.

[0247] Fig.10 The electronic device 1000 according to the embodiment of the present disclosure includes at least a memory, a processor and a computer program stored in the memory, and the processor executes the computer program to implement the communication switching method described in any of the above embodiments.

[0248] Fig.10 The electronic device 1000 shown specifically includes: a central processing unit (CPU) 1001, a graphics processing unit (GPU) 1002 and a memory 1003. These units are interconnected via a bus 1004. The central processing unit (CPU) 1001 and / or the graphics processing unit (GPU) 1002 can be used as the above-mentioned processor, and the memory 1003 can be used as the above-mentioned memory for storing computer-readable instructions. In addition, the electronic device 1000 may also include a communication unit 1005, a storage unit 1006, an output unit 1007, an input unit 1008 and an external device 1009, which are also connected to the bus 1004.

[0249] Fig.11 A schematic diagram of a computer-readable storage medium provided in an embodiment of the present disclosure. Fig.11 As shown, a computer-readable storage medium 1100 according to an embodiment of the present disclosure has a computer program / instruction 1101 stored thereon. When the computer program / instruction 1101 is executed by a processor, the communication switching method described in any of the foregoing embodiments of the present disclosure is implemented. The computer-readable storage medium includes, but is not limited to, for example, volatile memory and / or non-volatile memory. Volatile memory may include, for example, random access memory (RAM) and / or cache memory (cache), etc. Non-volatile memory may include, for example, read-only memory (ROM), hard disk, flash memory, optical disk, magnetic disk, etc.

[0250] The present disclosure further provides a computer program product, including a computer program / instruction, which, when executed by a processor, implements the communication switching method described in any of the foregoing embodiments of the present disclosure.

[0251] The basic principles of the present disclosure are described above in conjunction with specific embodiments. However, it should be noted that the advantages, strengths, effects, etc. mentioned in the present disclosure are only examples and not limitations, and it cannot be considered that these advantages, strengths, effects, etc. are required by each embodiment of the present disclosure. In addition, the specific details disclosed above are only for the purpose of illustration and ease of understanding, and are not limitations. The above details do not limit the present disclosure to the necessity of adopting the above specific details to be implemented.

[0252] The block diagrams of the devices, apparatuses, equipment, and systems involved in this disclosure are only illustrative examples and are not intended to require or imply that they must be connected, arranged, and configured in the manner shown in the block diagrams. As will be appreciated by those skilled in the art, these devices, apparatuses, equipment, and systems can be connected, arranged, and configured in any manner. Words such as "including," "comprising," "having," and the like are open words, referring to "including but not limited to," and can be used interchangeably therewith. The words "or" and "and" used herein refer to the words "and / or," and can be used interchangeably therewith, unless the context clearly indicates otherwise. The word "such as" used herein refers to the phrase "such as but not limited to," and can be used interchangeably therewith.

[0253] Additionally, as used herein, "or" used in a list of items beginning with "at least one" indicates a separate list, so that, for example, a list of "at least one of A, B, or C" means A or B or C, or AB or AC or BC, or ABC (i.e., A and B and C). Furthermore, the word "exemplary" does not mean that the example described is preferred or better than other examples.

[0254] It should also be noted that in the system and method of the present disclosure, each component or each step can be decomposed and / or recombined. Such decomposition and / or recombination should be regarded as equivalent solutions of the present disclosure.

[0255] Various changes, substitutions, and modifications of the techniques described herein may be made without departing from the teachings defined by the appended claims. Furthermore, the scope of the claims of the present disclosure is not limited to the specific aspects of the processes, machines, manufactures, compositions of events, means, methods, and actions described above. Currently existing or later to be developed processes, machines, manufactures, compositions of events, means, methods, or actions that perform substantially the same functions or achieve substantially the same results as the corresponding aspects described herein may be utilized. Thus, the appended claims include such processes, machines, manufactures, compositions of events, means, methods, or actions within their scope.

[0256] The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use the present disclosure. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein may be applied to other aspects without departing from the scope of the present disclosure. Therefore, the present disclosure is not intended to be limited to the aspects shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

[0257] The above description has been given for the purpose of illustration and description. In addition, this description is not intended to limit the embodiments of the present disclosure to the forms disclosed herein. Although multiple example aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, changes, additions and sub-combinations thereof.

Claims

1. A communication switching method, characterized in that: Applied to a computing power sinking device, the method includes: Receiving a first message from a receiving terminal, wherein the first message is used to request that a first communication mode between the receiving terminal and a sending terminal be switched to a second communication mode; When the first information satisfies a preset first condition, sending a second message to the receiving terminal and the sending terminal, where the second message is used to instruct the receiving terminal to communicate with the sending terminal through the second communication mode; The first condition is used to indicate a communication condition of the second communication mode.

2. The method according to claim 1, characterized in that The first communication mode includes PC5 communication, and the second communication mode includes: Uu communication; The first information includes at least one of the following: network quality information of the second communication mode, base station information, and a position relationship between the sending terminal and the receiving terminal; The base station information is used to indicate the support status of the base station for the second communication mode; The posture relationship is used to indicate the adaptation status of the transmitting terminal and the receiving terminal to the second communication mode, and the posture relationship includes at least one of the following: a distance relationship and a heading relationship.

3. The method according to claim 2, characterized in that The first condition includes at least one of the following: The network quality of the second communication mode meets the communication requirements; The base station resources meet the resource requirements of the second communication mode, and / or the base station supports access to new services; The distance between the transmitting terminal and the receiving terminal is less than a first threshold and the headings are consistent.

4. The method according to claim 3, characterized in that The network quality of the second communication mode meets the communication requirements, including: The network quality evaluation value of the second communication mode between the sending terminal and the base station is greater than or equal to a preset second threshold; and the network quality evaluation value of the second communication mode between the receiving terminal and the base station is greater than or equal to the second threshold; The network quality assessment value is obtained based on weighted processing of at least one type of network quality information, wherein the network quality information includes at least one of the following: network type, reference signal received power RSRP, signal-to-noise ratio SINR, and received signal strength indication RSSI.

5. The method according to claim 3, characterized in that: The distance between the transmitting terminal and the receiving terminal is less than a first threshold and the headings are consistent, including: The distance between the transmitting terminal and the receiving terminal is smaller than a first threshold, and the heading angle difference between the transmitting terminal and the receiving terminal is smaller than a third threshold.

6. The method according to any one of claims 1 to 5, characterized in that: The method further comprises: Sending a third message to a first terminal, where the third message is used to instruct reporting second information of the first terminal; the first terminal includes: the sending terminal and / or the receiving terminal; A fourth message is received from the first terminal, where the fourth message carries the second information; the second information includes at least one of the following: location information, heading angle, and network quality information of the second communication mode.

7. The method according to any one of claims 1 to 6, characterized in that: The first message carries second information of the receiving terminal; The second information includes at least one of the following: location information, heading angle, and network quality information of the second communication mode.

8. The method according to any one of claims 1 to 7, characterized in that: The method further comprises: Query the base station to obtain base station information; The base station information includes: base station resource information and new service access support information.

9. The method according to any one of claims 1 to 8, characterized in that: The method further comprises: Receiving a subscription request from the receiving terminal and establishing a subscription relationship; Receiving a service message from the sending terminal; Based on the subscription relationship, the service message is forwarded to the receiving terminal through the second communication interface.

10. The method according to any one of claims 1 to 9, characterized in that: The method further comprises: monitoring the network quality of the first communication mode; When the network quality of the first communication mode meets a second condition, notifying the receiving terminal and the sending terminal to deactivate the second communication mode; The second condition is used to indicate that the first communication mode meets the communication requirements.

11. The method according to any one of claims 1 to 9, characterized in that: The method further comprises: receiving a fifth message from the receiving terminal, the fifth message being used to request stopping the second communication mode between the receiving terminal and the sending terminal; the fifth message being sent by the receiving terminal when detecting that the network quality of the first communication mode meets a second condition; wherein the second condition is used to indicate that the first communication mode meets a communication requirement; The receiving terminal and the sending terminal are notified to deactivate the second communication mode.

12. The method according to claim 10 or 11, characterized in that: The notifying the receiving terminal and the sending terminal to deactivate the second communication mode includes: Notifying the sending terminal to deactivate the second communication mode through the second communication mode; The receiving terminal is notified through the second communication method to end the message subscription of the second communication method.

13. The method according to any one of claims 1 to 12, characterized in that: The computing power sinking device is deployed in the computing power base station.

14. A communication switching method, characterized in that: Applied to any receiving terminal, the method includes: Sending a first message to a computing power sinking device, where the first message is used to request that a first communication mode between the receiving terminal and the sending terminal be switched to a second communication mode; receiving a second message from the computing power sinking device, where the second message is used to instruct the receiving terminal to communicate with the sending terminal through the second communication mode; The second message is sent when the first information satisfies a preset first condition, and the first condition is used to indicate a communication condition of the second communication mode.

15. The method according to claim 14, characterized in that The first communication mode includes PC5 communication, and the second communication mode includes: Uu communication; The first information includes at least one of the following: network quality information of the second communication mode, base station information, and a position relationship between the sending terminal and the receiving terminal; The base station information is used to indicate the support status of the base station for the second communication mode; The posture relationship is used to indicate the adaptation status of the transmitting terminal and the receiving terminal to the second communication mode, and the posture relationship includes at least one of the following: a distance relationship and a heading relationship.

16. The method according to claim 15, characterized in that The first condition includes at least one of the following: The network quality of the second communication mode meets the communication requirements; The base station resources meet the resource requirements of the second communication mode, and / or the base station supports access to new services; The distance between the transmitting terminal and the receiving terminal is less than a first threshold and the headings are consistent.

17. The method according to claim 16, characterized in that The network quality of the second communication mode meets the communication requirements, including: The network quality evaluation value of the second communication mode between the sending terminal and the base station is greater than or equal to a preset second threshold; and the network quality evaluation value of the second communication mode between the receiving terminal and the base station is greater than or equal to the second threshold; The network quality assessment value is obtained based on weighted processing of at least one type of network quality information, wherein the network quality information includes at least one of the following: network type, reference signal received power RSRP, signal-to-noise ratio SINR, and received signal strength indication RSSI.

18. The method according to claim 16, characterized in that The distance between the transmitting terminal and the receiving terminal is less than a first threshold and the headings are consistent, including: The distance between the transmitting terminal and the receiving terminal is smaller than a first threshold, and the heading angle difference between the transmitting terminal and the receiving terminal is smaller than a third threshold.

19. The method according to any one of claims 14 to 18, characterized in that: The method further comprises: receiving a third message from the computing power sinking device, where the third message is used to instruct reporting of second information of the receiving terminal; A fourth message is sent to the computing power sinking device, wherein the fourth message carries the second information; the second information includes at least one of the following: location information, heading angle, and network quality information of the second communication mode.

20. The method according to any one of claims 14 to 18, characterized in that: The first message carries second information of the receiving terminal; The second information includes at least one of the following: location information, heading angle, and network quality information of the second communication mode.

21. The method according to any one of claims 14 to 20, characterized in that: The method further comprises: Sending a subscription request to the computing power sinking device; Based on the second communication interface, a business message forwarded by the computing power sinking device is received, where the business message is a business message transmitted from the sending terminal to the receiving terminal.

22. The method according to any one of claims 14 to 21, characterized in that: The method further comprises: The network quality of the first communication mode between the sending terminal and the receiving terminal is monitored.

23. The method according to any one of claims 14 to 22, characterized in that: The sending a first message to the computing power sinking device includes: When the network quality of the first communication mode meets a preset third condition, sending the first message to the computing power sinking device; The third condition is used to indicate that the first communication mode does not meet communication requirements.

24. The method according to any one of claims 14 to 23, characterized in that: The method further comprises: When the network quality of the first communication mode meets the preset second condition, a fifth message is sent to the computing power sinking device, wherein the fifth message is used to request to stop the second communication mode between the receiving terminal and the sending terminal; wherein the second condition is used to indicate that the first communication mode meets the communication requirements; A service message is received from the sending terminal through the first communication mode.

25. The method according to claim 24, characterized in that The receiving terminal includes at least one of the following: a vehicle-to-everything (V2X) terminal; a mobile vehicle-to-everything (C-V2X) terminal; The receiving terminal is deployed on a vehicle.

26. A computing power sinking device, characterized in that: include: A receiving unit, configured to receive a first message from a receiving terminal, wherein the first message is used to request that a first communication mode between the receiving terminal and a sending terminal be switched to a second communication mode; a sending unit, configured to send a second message to the receiving terminal and the sending terminal when the first information satisfies a preset first condition, wherein the second message is used to instruct the receiving terminal to communicate with the sending terminal through the second communication mode; The first condition is used to indicate a communication condition of the second communication mode.

27. A terminal, characterized in that: include: A sending unit, configured to send a first message to the computing power sinking device, wherein the first message is used to request that a first communication mode between the terminal and the sending terminal be switched to a second communication mode; A receiving unit, configured to receive a second message from the computing power sinking device, wherein the second message is used to instruct the terminal to communicate with the sending terminal through the second communication mode; The second message is sent when the first information satisfies a preset first condition, and the first condition is used to indicate a communication condition of the second communication mode.

28. A base station, characterized in that: The base station is deployed with a computing power sinking device; The computing power sinking device is used to implement the method described in any one of claims 1 to 13; The base station includes: a computing power base station.

29. A vehicle, characterized in that: The vehicle is deployed with a terminal; the terminal is used to implement the method described in any one of claims 14-25.

30. A communication system, characterized in that: include: A computing power sinking device, used to implement the method described in any one of claims 1 to 13; At least two terminals, any one of which is used to implement the method described in any one of claims 14-25.

31. An electronic device comprising a memory, a processor and a computer program stored in the memory, characterized in that: The processor executes the computer program to implement the method according to any one of claims 1 to 25.

32. A computer-readable storage medium having a computer program / instruction stored thereon, characterized in that: When the computer program / instructions are executed by a processor, the method according to any one of claims 1 to 25 is implemented.

33. A computer program product comprising a computer program / instructions, characterized in that When the computer program / instructions are executed by a processor, the method according to any one of claims 1 to 25 is implemented.

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