CN109068297B - Method and device for determining V2X service transmission path - Google Patents

Method and device for determining V2X service transmission path Download PDF

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Publication number
CN109068297B
CN109068297B CN201811095311.5A CN201811095311A CN109068297B CN 109068297 B CN109068297 B CN 109068297B CN 201811095311 A CN201811095311 A CN 201811095311A CN 109068297 B CN109068297 B CN 109068297B
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service
interface
communication interface
current communication
base station
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CN109068297A (en
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张香云
刘琪
张涛
邱佳慧
陈祎
宋蒙
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China United Network Communications Group Co Ltd
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China United Network Communications Group Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/30—Services specially adapted for particular environments, situations or purposes
    • H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
    • H04W4/44—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P] for communication between vehicles and infrastructures, e.g. vehicle-to-cloud [V2C] or vehicle-to-home [V2H]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W40/00—Communication routing or communication path finding
    • H04W40/02—Communication route or path selection, e.g. power-based or shortest path routing
    • H04W40/12—Communication route or path selection, e.g. power-based or shortest path routing based on transmission quality or channel quality

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The embodiment of the invention provides a method and a device for determining a V2X service transmission path, relates to the field of Internet of vehicles, and can select a proper transmission path to ensure smooth transmission of V2X service. The method comprises the following steps: the MEC equipment receives a V2X service request, wherein the V2X service request carries the characteristic information of the V2X service; and receiving a signal quality of a current communication interface; and determining whether to continue to adopt the current communication interface to transmit the V2X service according to the signal quality of the current communication interface and the characteristic information of the V2X service. Wherein the characteristic information of the V2X service comprises at least one of the following items: service identification of the V2X service, target time delay of the V2X service, and an area range corresponding to the V2X service; the current communication interface is a communication interface adopted by the first OBU for V2X service transmission, and the communication interface comprises a PC5 interface or a Uu interface.

Description

Method and device for determining V2X service transmission path
Technical Field
The embodiment of the invention relates to the field of vehicle networking, in particular to a method and a device for determining a V2X service transmission path.
Background
With the rapid development of the internet of vehicles, wireless communication and information exchange can be performed between vehicles-X (X: vehicles, roads, pedestrians, the Internet and the like), and the internet of vehicles can realize intelligent traffic management, intelligent dynamic information service and intelligent control of vehicles.
In the car networking, communication can be performed among a base station, an On Board Unit (OBU), and a Road Side Unit (RSU) to transmit V2X traffic. Specifically, the transmission path of the V2X traffic may include a Uu interface and a PC5 interface, where the Uu interface is a communication interface between a base station and a device (e.g., between the base station and an OBU, between the base station and an RSU), and the PC5 interface is a communication interface between a device and a device (e.g., between the OBU and the RSU (when the RSU is a terminal-type device)). For example, when the base station sends the processing result of the V2X service to the OBU, the base station may directly send the processing result of the V2X service to the OBU through the Uu interface, or the base station may send the processing result of the V2X service to the RSU through the Uu interface, and then the RSU forwards the processing result of the V2X service to the OBU through the PC5 interface.
However, due to the movement of the vehicle, the signal quality of the PC5 interface or the Uu interface may change, so that the original PC5 interface or the Uu interface is no longer suitable for transmitting the V2X service, and since the user requirement may also change, the original PC5 interface or the Uu interface is no longer suitable for transmitting the V2X service, so the V2X service cannot be transmitted smoothly.
Disclosure of Invention
The embodiment of the invention provides a method and a device for determining a transmission path of a V2X service, which can select a proper transmission path and ensure smooth transmission of the V2X service.
In order to achieve the above purpose, the embodiment of the invention adopts the following technical scheme:
in a first aspect, a method for determining a V2X traffic transmission path is provided, the method including: a Mobile Edge Computing (MEC) device receives a V2X service request, where the V2X service request carries feature information of a V2X service; the MEC equipment receives the signal quality of a current communication interface, wherein the current communication interface is a communication interface adopted by the first OBU for carrying out V2X service transmission and comprises a PC5 interface or a Uu interface; and the MEC equipment determines whether to continuously adopt the current communication interface to transmit the V2X service according to the signal quality of the current communication interface and the characteristic information of the V2X service; wherein the characteristic information of the V2X service comprises at least one of the following items: service identification of the V2X service, target time delay of the V2X service, and an area range corresponding to the V2X service.
In a first optional implementation manner of the first aspect, the method for determining, by the MEC device, whether to continue to transmit the V2X service using the current communication interface according to the signal quality of the current communication interface and the feature information of the V2X service may include: when the signal quality of the current communication interface is smaller than a signal quality threshold value, the MEC equipment determines to switch the current communication interface; when the signal quality of the current communication interface is greater than or equal to the signal quality threshold, the MEC equipment determines whether to continue to adopt the current communication interface to transmit the V2X service according to the characteristic information of the V2X service.
In a second optional implementation manner of the first aspect, the current communication interface is a Uu interface, and the feature information of the V2X service includes an area range corresponding to the V2X service, a service identifier of the V2X service, and a target delay of the V2X service; the method for determining whether to continue to transmit the V2X service by the MEC device according to the feature information of the V2X service may include:
the method comprises the following steps: when other OBUs except the first OBU in the area range corresponding to the V2X service do not allow the V2X service to be transmitted by adopting the Uu interface, determining to switch the current communication interface from the Uu interface to a PC5 interface; otherwise, executing the step two;
step two: when the base stations corresponding to other OBUs do not allow the processing of the V2X service identified by the service identifier, determining to switch the current communication interface from the Uu interface to a PC5 interface; otherwise, executing the third step;
step three: when the Uu interface is adopted to transmit the V2X service and the time delay of the V2X service is less than or equal to the target time delay of the V2X service, determining to continuously adopt the Uu interface to transmit the V2X service; otherwise, the current communication interface is determined to be switched from the Uu interface to the PC5 interface.
In a third optional implementation manner of the first aspect, the current communication interface is a PC5 interface, and the feature information of the V2X service includes an area range corresponding to the V2X service, a service identifier of the V2X service, and a target latency of the V2X service; the method for determining whether to continue to transmit the V2X service by the MEC device according to the feature information of the V2X service may include:
the method comprises the following steps: when other OBUs except the first OBU in the area range corresponding to the V2X service do not allow the V2X service to be transmitted by adopting the PC5 interface, determining to switch the current communication interface from the PC5 interface to the Uu interface; otherwise, executing the step two;
step two: when the base stations corresponding to other OBUs do not allow the processing of the V2X service identified by the service identifier, determining to switch the current communication interface from the PC5 interface to the Uu interface; otherwise, executing the third step;
step three: when the PC5 interface is adopted to transmit the V2X service, and the time delay of the V2X service is less than or equal to the target time delay of the V2X service, the PC5 interface is determined to be continuously adopted to transmit the V2X service; otherwise, the first OBU is notified that the transmission of the V2X service fails.
In a second aspect, a method for determining a V2X traffic transmission path is provided, the method comprising: a base station receives a V2X service request, wherein the V2X service request carries the characteristic information of a V2X service; and the base station determines whether the base station allows processing the V2X service according to the characteristic information of the V2X service; and forwarding the V2X service request to the MEC device when the base station does not allow the V2X service to be processed, wherein the characteristic information of the V2X service includes at least one of the following items: service identification of the V2X service, target time delay of the V2X service, and an area range corresponding to the V2X service.
In a first optional implementation manner of the second aspect, the feature information of the V2X service includes: the service identifier of the V2X service, the target time delay of the V2X service, and the area range corresponding to the V2X service, when any one of the following conditions is not satisfied, it is determined that the base station does not allow the V2X service to be processed:
the area range corresponding to the V2X service is positioned outside the coverage range of the base station;
the base station does not allow processing of the V2X service identified by the service identification;
when the base station processes the V2X service, the delay of the V2X service is greater than the target delay of the V2X service.
In a third aspect, a mobile edge computing MEC apparatus is provided that includes a receiving module and a determining module. The receiving module is used for receiving the V2X service request and receiving the signal quality of the current communication interface. Wherein, the V2X service request carries the feature information of the V2X service, and the feature information of the V2X service includes at least one of the following items: service identification of the V2X service, target time delay of the V2X service, and an area range corresponding to the V2X service; the current communication interface is a communication interface adopted by the first OBU for V2X service transmission, and comprises a PC5 interface or a Uu interface; and the determining module is used for determining whether to continue to adopt the current communication interface to transmit the V2X service according to the signal quality of the current communication interface and the characteristic information of the V2X service.
In a first optional implementation manner of the third aspect, the determining module is specifically configured to determine to switch the current communication interface when the signal quality of the current communication interface is less than a signal quality threshold; and when the signal quality of the current communication interface is greater than or equal to the signal quality threshold, determining whether to continue to transmit the V2X service by using the current communication interface according to the characteristic information of the V2X service.
In a second optional implementation manner of the third aspect, the current communication interface is a Uu interface, and the feature information of the V2X service includes an area range corresponding to the V2X service, a service identifier of the V2X service, and a target delay of the V2X service; the determining module is specifically configured to:
the method comprises the following steps: when other OBUs except the first OBU in the area range corresponding to the V2X service do not allow the V2X service to be transmitted by adopting a Uu interface, determining to switch the current communication interface from the Uu interface to a PC5 interface; otherwise, executing the step two;
step two: when the base stations corresponding to other OBUs do not allow the processing of the V2X service identified by the service identifier, determining to switch the current communication interface from the Uu interface to a PC5 interface; otherwise, executing the third step;
step three: under the condition that a Uu interface is adopted to transmit a V2X service, when the time delay of the V2X service is less than or equal to the target time delay of the V2X service, the Uu interface is determined to be continuously adopted to transmit the V2X service; otherwise, the current communication interface is determined to be switched from the Uu interface to the PC5 interface.
In a third optional implementation manner of the third aspect, the current communication interface is a PC5 interface, and the feature information of the V2X service includes an area range corresponding to the V2X service, a service identifier of the V2X service, and a target delay of the V2X service; the determining module is specifically configured to:
the method comprises the following steps: when other OBUs except the first OBU in the area range corresponding to the V2X service do not allow the V2X service to be transmitted by adopting the PC5 interface, determining to switch the current communication interface from the PC5 interface to the Uu interface; otherwise, executing the step two;
step two: when the base stations corresponding to other OBUs do not allow the processing of the V2X service identified by the service identifier, determining to switch the current communication interface from the PC5 interface to the Uu interface; otherwise, executing the third step;
step three: under the condition that the PC5 interface is adopted to transmit the V2X service, when the V2X service delay is larger than the target delay of the V2X service, the first OBU is informed of the failure of transmitting the V2X service, otherwise, the PC5 interface is determined to be adopted to continuously transmit the V2X service
In a fourth aspect, a base station is provided and includes a receiving module, a determining module, and a transmitting module. The receiving module is configured to receive a V2X service request, where the V2X service request carries feature information of a V2X service, and the feature information of the V2X service includes at least one of the following items: service identification of the V2X service, target time delay of the V2X service, and an area range corresponding to the V2X service; a determining module, configured to determine whether the base station allows processing the V2X service according to the characteristic information of the V2X service; and the sending module is used for forwarding the V2X service request to the MEC equipment when the base station does not allow the V2X service to be processed.
In a first optional implementation manner of the fourth aspect, the feature information of the V2X service includes: service identification of the V2X service, target time delay of the V2X service and an area range corresponding to the V2X service; the determining module is specifically configured to determine that the base station is not allowed to process the V2X service when any one of the following conditions is not satisfied:
the area range corresponding to the V2X service is positioned outside the coverage range of the base station;
the base station does not allow processing of the V2X service identified by the service identification;
when the base station processes the V2X service, the delay of the V2X service is greater than the target delay of the V2X service.
In a fifth aspect, an MEC apparatus is provided that includes a processor, a transceiver, and a memory. Wherein the memory is used for storing computer-executable instructions, and when the server runs, the processor executes the computer-executable instructions stored in the memory, so as to make the MEC apparatus execute the method for determining a V2X traffic transmission path according to the first aspect.
In a sixth aspect, there is provided a computer readable storage medium having one or more programs stored therein, the one or more programs including computer executable instructions, which when executed by a processor of an MEC apparatus, the MEC apparatus performs the method for determining a V2X traffic transmission path according to the first aspect.
In a seventh aspect, there is provided a computer program product comprising computer instructions which, when run on an MEC apparatus, cause the MEC apparatus to perform the method for determining a V2X traffic transmission path according to the first aspect.
In an eighth aspect, a base station is provided that includes a processor, a transceiver, and a memory. Wherein the memory is used for storing computer-executable instructions, and when the server runs, the processor executes the computer-executable instructions stored in the memory, so as to make the base station execute the method for determining the traffic transmission path of V2X described in the second aspect.
In a ninth aspect, there is provided a computer readable storage medium, in which one or more programs are stored, the one or more programs including computer executable instructions, and when the computer executable instructions are executed by a processor of a base station, the base station executes the method for determining a traffic transmission path of V2X according to the second aspect.
In a tenth aspect, there is provided a computer program product comprising computer instructions which, when run on a base station, cause the base station to perform the method of determining a V2X traffic transmission path as described in the second aspect above.
According to the method and the device for determining the transmission path of the V2X service, after receiving the V2X service request, the MEC device carries the characteristic information of the V2X service in the V2X service request, and then the MEC device can determine whether to continue to transmit the V2X service by using the current communication interface according to the received signal quality of the current communication interface and the characteristic information of the V2X service. Wherein the characteristic information of the V2X service comprises at least one of the following items: service identification of the V2X service, target time delay of the V2X service, and an area range corresponding to the V2X service. Because the MEC equipment can determine to adopt a proper communication interface to transmit the V2X service according to the characteristic information of the V2X service carried in the V2X request, the smooth transmission of the V2X service can be ensured to a certain extent.
Drawings
Fig. 1 is a schematic view of an architecture of a communication system in a vehicle networking system according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a hardware structure of a server according to an embodiment of the present invention;
fig. 3 is a hardware schematic diagram of a base station according to an embodiment of the present invention;
fig. 4 is a first schematic diagram illustrating a method for determining a V2X service transmission path according to an embodiment of the present invention;
fig. 5 is a schematic diagram of a method for determining a V2X service transmission path according to an embodiment of the present invention;
fig. 6 is a third schematic diagram of a method for determining a V2X service transmission path according to an embodiment of the present invention;
fig. 7 is a fourth schematic diagram of a method for determining a V2X service transmission path according to the embodiment of the present invention;
fig. 8 is a fifth schematic diagram illustrating a method for determining a V2X service transmission path according to an embodiment of the present invention;
fig. 9 is a first schematic structural diagram of an MEC apparatus according to an embodiment of the present invention;
fig. 10 is a schematic structural diagram ii of an MEC apparatus according to an embodiment of the present invention;
fig. 11 is a first schematic structural diagram of a base station according to an embodiment of the present invention;
fig. 12 is a schematic structural diagram of a base station according to an embodiment of the present invention.
Detailed Description
In the embodiments of the present invention, words such as "exemplary" or "for example" are used to mean serving as examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "e.g.," an embodiment of the present invention is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present concepts related in a concrete fashion.
In the description of the embodiments of the present invention, the meaning of "a plurality" means two or more unless otherwise specified. For example, a plurality of processing units refers to two or more processing units; the plurality of systems refers to two or more systems.
Furthermore, the terms "comprising" and "having" and any variations thereof as referred to in the description of the invention are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements but may alternatively include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Based on the problems existing in the background art, embodiments of the present invention provide a method for determining a transmission path of a V2X service, in a process of processing a V2X service, an MEC device may determine whether to continue to use a current communication interface to transmit a V2X service according to signal quality of the current communication interface and feature information of the V2X service, and may select a suitable transmission path to ensure smooth transmission of the V2X service.
The method for determining a V2X service transmission path provided by the embodiment of the present invention may be applied to a vehicle networking communication system, fig. 1 is a schematic architecture diagram of the vehicle networking communication system, and as shown in fig. 1, the vehicle networking communication system includes a base station 10, at least one OBU (3 OBUs are exemplarily illustrated in fig. 1 and respectively denoted as OBU1, OBU2, and OBU3), an RSU 12 (the RSU 12 serves the OBU1, OBU2, and OBU3 at the same time), and an MEC device 13. Wherein the base station 10 may communicate with the MEC device 13, the OBUs (including OBU1, OBU2, and OBU3) may communicate directly with the base station 10, or the OBUs may communicate with the base station 10 through the RSU 12.
The MEC equipment is a mobile edge computing node and is suitable for processing V2X services with high time delay requirements and large data volume, for example, in remote driving, remote monitoring and highway scenes, the V2X services require low time delay, so that the MEC can process the V2X services to meet service requirements; the base station is suitable for processing V2X services with low requirements on time delay and small data volume.
Details of the interaction between the various devices in the vehicle networking communication system will be described in detail below in connection with the transmission path of the V2X traffic.
It should be noted that, in this embodiment of the present invention, each OBU may correspond to one RSU, or multiple OBUs correspond to one RSU, and one OBU may be located in a coverage area of one base station, or may be located in coverage areas of multiple base stations, that is, the OBU may be located in an overlapping coverage area of multiple base stations, which is determined specifically according to an actual situation, and this embodiment of the present invention is not limited.
The MEC device provided in the embodiment of the present invention may be a hardware device, or may also be a virtual software device, where the MEC device may be integrated in a computer or a server, and the like, and the embodiment of the present invention takes the example where the MEC device is integrated in a server, introduces and determines a hardware structure of the MEC device, and specifically introduces each component of the server provided in the embodiment of the present invention with reference to fig. 2, and as shown in fig. 2, the server may include: processor 20, memory 21, and communication interface 22, among others.
The processor 20: is the core component of the server and is used for running the operating system of the server and the application programs (including the system application program and the third party application program) on the server.
In this embodiment of the present invention, the processor 20 may specifically be a Central Processing Unit (CPU), a general purpose processor, a Digital Signal Processor (DSP), an application-specific integrated circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic devices, a transistor logic device, a hardware component, or any combination thereof, which may implement or execute various exemplary logic blocks, modules, and circuits described in connection with the disclosure of the embodiment of the present invention; a processor may also be a combination of computing functions, e.g., comprising one or more microprocessors, a DSP and a microprocessor, or the like.
The memory 21: may be used to store software programs and modules, and the processor 20 executes various functional applications of the server and data processing by operating the software programs and modules stored in the memory 21. For example, a software package of the MEC apparatus or the like is stored in the memory 21 of the server, and the memory 21 may include one or more computer-readable storage media. The memory 21 includes a storage program area that may store an operating system, an application program required for at least one function, and the like, and a storage data area that may store server-created data and the like.
In this embodiment of the present invention, the memory 21 may specifically include a volatile memory (volatile memory), such as a random-access memory (RAM); the memory may also include a non-volatile memory (non-volatile memory), such as a read-only memory (ROM), a flash memory (flash memory), a Hard Disk Drive (HDD) or a solid-state drive (SSD); the memory may also comprise a combination of memories of the kind described above.
Communication interface 22: the interface circuit is used for the server to communicate with other devices, the communication interface can be a transceiver, a transceiving circuit and other structures with transceiving functions, and the communication interface comprises a serial communication interface and a parallel communication interface. For example, MEC equipment may receive a V2X service request from a base station over communication interface 22.
The base station generally used in the base station provided in the embodiment of the present invention includes an evolved node base (eNB), a next generation base station (gNB) in a 5G system, a new radio base station (new radio eNB), a macro base station, a micro base station, a high frequency base station, or a Transmission and Reception Point (TRP). The embodiments of the present invention will exemplarily describe each constituent element of a base station by taking a commonly used base station as an example. As shown in fig. 3, a base station provided in an embodiment of the present invention may include: portions 30 and 31. The 30 part is mainly used for receiving and transmitting radio frequency signals and converting the radio frequency signals and baseband signals; the 31 part is mainly used for baseband processing, base station control and the like. Portion 30 may be generally referred to as a transceiver unit, transceiver, transceiving circuitry, or transceiver, etc. Part 31 is typically the control center of the base station and may be generally referred to as a processing unit.
The transceiver unit of part 30, which may also be referred to as a transceiver, or a transceiver, etc., includes an antenna and a radio frequency unit, or only includes a radio frequency unit or a portion thereof, where the radio frequency unit is mainly used for radio frequency processing. Optionally, a device used for implementing the receiving function in the part 30 may be regarded as a receiving unit, and a device used for implementing the sending function may be regarded as a sending unit, that is, the part 30 includes a receiving unit and a sending unit. A receiving unit may also be referred to as a receiver, a receiving circuit, or the like, and a transmitting unit may be referred to as a transmitter, a transmitting circuit, or the like.
Portion 31 may comprise one or more boards or chips, each of which may comprise one or more processors and one or more memories, the processors being configured to read and execute programs in the memories to implement baseband processing functions and control of the base station. If a plurality of single boards exist, the single boards can be interconnected to increase the processing capacity. As an alternative implementation, multiple boards may share one or more processors, or multiple boards may share one or more memories. The memory and the processor may be integrated together or may be provided separately. In some embodiments, portions 30 and 31 may be integrated or may be separate. In addition, all functions in the part 31 may be integrated in one chip, or part of the functions may be integrated in one chip to implement another part of the functions are integrated in one or more other chips to implement, which is not limited in this embodiment of the present invention.
In the car networking communication system described in conjunction with fig. 1, as shown in fig. 4, the method for determining a V2X traffic transmission path according to the embodiment of the present invention may include steps S101 to S103:
s101, the MEC equipment receives a V2X service request, and the V2X service request carries the characteristic information of the V2X service.
Wherein the characteristic information of the V2X service comprises at least one of the following items: service identification of the V2X service, target time delay of the V2X service, and an area range corresponding to the V2X service.
In this embodiment of the present invention, the V2X service request is a V2X service request of the first OBU, and the V2X service request is sent to the base station by the first OBU, and then forwarded to the MEC device by the base station. For example, the V2X service is a traffic light service, the first OBU installed on the vehicle may send out a V2X service request, and the V2X service request may be a unicast service request or a broadcast service request.
The service identifier of the V2X service is an identifier indicating a type of the V2X service, and for example, the type of the V2X service may include highway service, traffic light service, remote monitoring service, and the like; the target time delay of the V2X service refers to the maximum value of the time delay which can be accepted by the user in the V2X service processing process; for example, the area corresponding to the V2X service may be a campus, an intersection, or the like.
S102, the MEC equipment receives the signal quality of the current communication interface.
The current communication interface is a communication interface adopted by the first OBU for V2X service transmission, and the communication interface comprises a PC5 interface or a Uu interface.
It is emphasized again that the Uu interface is a communication interface between a base station and a device (for example, the base station and the OBU, and the base station and the RSU), and the PC5 interface is a communication interface between a device and a device (for example, the OBU and the RSU, and the RSU is a terminal-type device (the RSU may be a terminal-type device, or may be a base station-type device).
In this embodiment of the present invention, the base station may broadcast a signal measurement parameter, where the signal measurement parameter may include parameters such as a measurement object, a measurement period, and a measurement threshold, and the signal measurement parameter is used to indicate the OBU to measure the signal quality (the signal quality may include reference signal received power RSRP, reference signal received quality RSRQ, or strength indication RSSI of a reference signal, etc.). After the first OBU receives the signal measurement parameter, the signal quality of the current communication interface (including the signal quality when the first OBU uses the PC5 interface for communication, or the signal quality when the first OBU uses the Uu interface for communication) may be measured, and then the signal quality is reported to the base station, and further forwarded to the MEC device through the base station.
It should be noted that, in the embodiment of the present invention, in the area corresponding to the V2X service, the first OBU may be located in coverage areas of multiple base stations, and in this case, the signal quality measured by the first OBU includes multiple signal qualities, that is, when the first OBU receives the signal quality measurement parameter sent by each base station, one signal quality is measured, and therefore, the signal quality reported by the first OBU includes multiple signal qualities. In the following embodiments, the signal quality of the current communication interface reported by the first OBU refers to all signal qualities reported by the first OBU.
S103, the MEC equipment determines whether to continuously adopt the current communication interface to transmit the V2X service according to the signal quality of the current communication interface and the characteristic information of the V2X service.
Optionally, with reference to fig. 4, as shown in fig. 5, the above S103 may be implemented by S104-S106:
s104, the MEC equipment determines whether the signal quality of the current communication interface is smaller than a signal quality threshold value.
In one implementation, when the signal quality of the current communication interface is less than the signal quality threshold, the following S105 is performed:
and S105, the MEC equipment determines to switch the current communication interface.
In the embodiment of the present invention, the signal quality of the current communication interface is less than the signal quality threshold, which indicates that the signal quality of the current communication interface is poor and cannot meet the requirement of transmitting the V2X service, and therefore, the MEC device determines to switch to another communication interface to transmit the V2X service.
In another mode, when the signal quality of the current communication interface is greater than or equal to the signal quality threshold, the following S106 is executed:
s106, the MEC equipment determines whether to continuously adopt the current communication interface to transmit the V2X service according to the characteristic information of the V2X service.
In the embodiment of the present invention, when the signal quality of the current communication interface is greater than or equal to the signal quality threshold, it indicates that the signal quality of the current communication interface is good, and the requirement for transmitting the V2X service can be met, so that the MEC device determines whether to continue to transmit the V2X service by using the current communication interface according to other conditions.
Optionally, in the embodiment of the present invention, a method for determining a transmission path of a V2X service is described by taking, as an example, that the feature information of the V2X service includes a service identifier of the V2X service, a target time delay of the V2X service, and an area range corresponding to the V2X service.
As shown in fig. 6, the current communication interface is a Uu interface, and the S106 may be implemented by S1061a-S1061 e:
s1061a, the MEC equipment determines whether other OBUs except the first OBU in the area range corresponding to the V2X service allow the V2X service to be transmitted by adopting the Uu interface.
When other OBUs except the first OBU in the area range corresponding to the V2X service do not allow the transmission of the V2X service via the Uu interface, determining to switch the current communication interface from the Uu interface to the PC5 interface (i.e., executing S1061 e); otherwise, S1061b is executed.
In the embodiment of the present invention, other OBUs except the first OBU in the area range corresponding to the V2X service do not allow the use of the Uu interface for transmitting the V2X service, so that the base station cannot transmit the V2X service to other OBUs through the Uu interface and then transmit the service to the transmission path of the first OBU by the other OBUs, and the MEC device determines that the current communication interface needs to be switched from the Uu interface to the PC5 interface, that is, the other OBUs directly switch the V2X service to the transmission path of the first OBU.
S1061b, the MEC device determines whether the base station corresponding to the other OBU allows to process the V2X service identified by the service identification.
When the base station corresponding to the other OBUs does not allow processing the V2X service identified by the service identifier, determining to switch the current communication interface from the Uu interface to the PC5 interface (i.e., performing S1061 e); otherwise, S1061c is executed.
S1061c, the MEC equipment determines whether the delay of the V2X service is less than or equal to the target delay of the V2X service when the Uu interface is adopted to transmit the V2X service.
In the case of transmitting the V2X service by using the Uu interface, if the delay of the V2X service is smaller than the target delay of the V2X service, then S1062d is executed; otherwise, it is determined to switch the current communication interface from the Uu interface to the PC5 interface (i.e., S1061e is performed).
In the embodiment of the present invention, when a Uu interface is used to transmit a V2X service, the delay of the V2X service is greater than the target delay of the V2X service, which indicates that the use of the Uu interface to transmit the V2X service cannot meet the delay requirement of a user, so that it is determined to switch the current interface from the Uu interface to a PC5 interface.
S1061d, the MEC equipment determines to continue to adopt the Uu interface to transmit the V2X service.
In the embodiment of the present invention, when the MEC device determines to continue to use the Uu interface to transmit the V2X traffic, a transmission path for directly transmitting the V2X traffic from the base station to the first OBU is used.
S1061e, the MEC equipment determines to switch the current communication interface from the Uu interface to the PC5 interface.
In this embodiment of the present invention, when the MEC device determines to switch the current communication interface from the Uu interface to the PC5 interface, another OBU may be used to directly forward the V2X traffic to the transmission path of the first OBU, or a transmission path through which the RSU forwards the V2X traffic to the first OBU may be used.
In summary, for the process description of the MEC device determining whether to switch the current communication interface from the Uu interface to the PC5 interface, when the current Uu interface cannot be used to transmit the V2X service, the MEC device determines to transmit the V2X service by using the PC5 interface, so as to ensure smooth transmission of the V2X service.
As shown in fig. 7, the current communication interface is a PC5 interface, and the MEC device needs to determine whether to continue to use the PC5 interface to transmit V2X traffic, or to use the PC5, where S106 may include S1062a-S1062 f:
s1062a, the MEC equipment determines whether the OBUs except the first OBU in the area range corresponding to the V2X service allow the transmission of the V2X service by adopting the PC5 interface.
In the embodiment of the present invention, when other OBUs except the first OBU in the area range corresponding to the V2X service do not allow the PC5 interface to transmit the V2X service, it is determined to switch the current communication interface from the PC5 interface to the Uu interface (i.e., S1062f is performed); otherwise, S1062b is executed.
S1062b, the MEC device determines whether the base station corresponding to the other OBU allows to process the V2X service identified by the service identification.
In the embodiment of the present invention, when the base station corresponding to the other OBUs does not allow processing of the V2X service identified by the service identifier, it is determined to switch the current communication interface from the PC5 interface to the Uu interface (i.e., S1062f is performed); otherwise, S1062c is executed.
The implementation processes of S1062a and S1062b are similar to those of S1061a and S1061b, and for the descriptions related to S1062a and S1062b, reference may be made to the detailed descriptions of S1061a and S1061b in the foregoing embodiments, and details are not described here again.
S1062c, the MEC device determines whether the delay of the V2X service is larger than the target delay of the V2X service under the condition that the PC5 interface is adopted to transmit the V2X service.
In the embodiment of the present invention, when the PC5 interface is used to transmit the V2X service and the V2X service delay is greater than the target delay of the V2X service, S1062d is performed. Otherwise, S1062e is executed.
S1062d, the MEC device informs the first OBU that the transmission of the V2X service fails.
In the embodiment of the present invention, the delay of transmitting the V2X service by using the PC5 interface is usually smaller than the delay of transmitting the V2X service by using the Uu interface, so that when the V2X service is transmitted by using the PC5 interface, the delay of the V2X service is larger than the target delay of the V2X service, and the MEC device does not switch the current communication interface from the PC5 interface to the Uu interface, but notifies the first OBU that the transmission of the V2X service fails.
S1062e, the MEC equipment determines to continue to adopt the PC5 interface to transmit V2X traffic.
S1062f, the MEC equipment determines to switch the current communication interface from the PC5 interface to the Uu interface.
In summary, for the process description of the MEC device determining whether to switch the current communication interface from the PC5 interface to the Uu interface, when the current PC5 interface cannot be used to transmit the V2X service, the MEC device determines to transmit the V2X service by using the Uu interface, so as to ensure smooth transmission of the V2X service. Alternatively, the MEC device notifies the first OBU that the transmission of the V2X traffic failed.
As shown in fig. 8, the method for determining a V2X service transmission path provided in the embodiment of the present invention includes steps S201 to S203:
s201, the base station receives a V2X service request, and the V2X service request carries the characteristic information of the V2X service.
Wherein the characteristic information of the V2X service comprises at least one of the following items: service identification of the V2X service, target time delay of the V2X service, and an area range corresponding to the V2X service.
In the embodiment of the present invention, when the first OBU has a V2X service requirement, the first OBU may initiate a V2X service request to the base station, and carry the characteristic information of the V2X service in the V2X service request, so that the base station determines whether the base station can process the V2X service according to the characteristic information of the V2X service.
For the feature information of the V2X service, reference may be made to the above-mentioned related description of S101, and details are not described here.
S202, the base station determines whether the base station allows processing the V2X service according to the characteristic information of the V2X service.
Illustratively, the feature information of the V2X service carried in the V2X service request received by the base station includes a service identifier of the V2X service, a target time delay of the V2X service, and an area range corresponding to the V2X service, and the base station determines whether the base station allows processing the V2X service according to the following three conditions:
condition 1: whether the area range corresponding to the V2X service is located outside the coverage of the base station.
Condition 2: whether the base station allows processing of the V2X traffic identified by the traffic identification.
Condition 3: whether the delay of the V2X service is greater than the target delay of the V2X service when the base station processes the V2X service.
In the embodiment of the present invention, when the area range corresponding to the V2X service is located within the coverage of the base station, and the base station allows processing the V2X service identified by the service identifier, and when the base station processes the V2X service, and the delay of the V2X service is less than or equal to the target delay of the V2X service, the base station determines to allow processing the V2X service.
S203, when the base station does not allow the processing of the V2X service, the base station forwards the V2X service request to the MEC equipment.
In the embodiment of the present invention, when any one of the following conditions is not satisfied, it is determined that the base station is not allowed to process the V2X service:
the condition a is that the area range corresponding to the V2X service is positioned outside the coverage range of the base station;
the base station does not allow the processing of the V2X service identified by the service identification;
condition c, when the base station processes the V2X service, the delay of the V2X service is greater than the target delay of the V2X service.
In the embodiment of the present invention, when the base station does not allow processing the V2X service, the base station forwards the V2X service request to the MEC device, so that the MEC device may perform steps S101 to S103 and others in the above embodiment, and determine a transmission path of the V2X service; when the base station allows processing of the V2X traffic, a transmission path of the V2X traffic is determined by the base station.
It should be noted that, in the embodiment of the present invention, a method for determining a V2X service transmission path by a base station is similar to a method for determining a V2X service transmission path by an MEC device, and for the description of determining a V2X service transmission path by a base station, reference may be made to the description related to determining a V2X service transmission path by an MEC device in the foregoing embodiment, which is not described herein again.
An embodiment of the present invention provides an MEC device, as shown in fig. 9, where the MEC device includes a receiving module 40 and a determining module 41, where the receiving module 40 may support the MEC device to execute S101 and S102 in the foregoing embodiments. The determination module 41 may support the MEC device to perform S103, S104, S105, S106 (including S1061a-S1061e or including S1062a-S1062f) in the above embodiments. All relevant contents of each step related to the above method embodiment may be referred to the functional description of the corresponding functional module, and are not described herein again.
As shown in fig. 10, an MEC apparatus according to an embodiment of the present invention may include: a processing module 50 and a communication module 51. The processing module 50 may be used to control and manage the actions of the MEC equipment, for example, the processing module 50 may be used to support the MEC equipment to perform S103, S104, S105, and S106 (including S1061a-S1061e or including S1062a-S1062f) in the above-described method embodiments, and/or other processes for the techniques described herein. The communication module 51 may be configured to support communication between the illegal terminal identification device and other network entities, for example, the communication module 51 may be configured to support the MEC apparatus to perform S101 and S102 in the above-described method embodiment. Optionally, as shown in fig. 10, the MEC apparatus may further include a storage module 52 for storing program codes and data of the MEC apparatus.
The processing module 50 may be a processor or a controller (e.g., the processor 20 shown in fig. 1). The communication module 51 may be a transceiver, a transceiver circuit, a communication interface, etc. (e.g., may be the communication interface 22 shown in fig. 2). The storage module 52 may be a memory (e.g., may be the memory 21 described above with reference to fig. 2).
When the processing module 50 is a processor, the communication module 51 is a transceiver, and the storage module 52 is a memory, the processor, the transceiver, and the memory may be connected by a bus. The bus may be a Peripheral Component Interconnect (PCI) bus, an Extended Industry Standard Architecture (EISA) bus, or the like. The bus may be divided into an address bus, a data bus, a control bus, etc.
An embodiment of the present invention provides a base station, as shown in fig. 11, the base station may include a receiving module 60, a determining module 61, and a sending module 62. The receiving module 60 may be configured to support the base station to perform S201 in the foregoing method embodiment; the determining module 61 may be configured to support the base station to perform S202 in the foregoing method embodiment; the sending module 62 may be configured to support the base station to perform S203 in the foregoing method embodiment. All relevant contents of each step related to the above method embodiment may be referred to the functional description of the corresponding functional module, and are not described herein again.
As shown in fig. 12, a base station according to an embodiment of the present invention may include: a processing module 70 and a communication module 71. Processing module 70 may be used to control and manage the actions of the base station, e.g., processing module 70 may be used to support the base station to perform S202 in the above example, and/or other processes for the techniques described herein. The communication module 71 may be configured to support communication between the base station and other network entities, for example, the communication module may be configured to support the base station to perform S201 and S203 in the above method embodiments. Optionally, the base station may further include a memory module 72 for storing program codes and data of the base station.
The processing module 70 may be a processor or a controller (for example, may be the processor in the above-mentioned part 31 shown in fig. 3), and may be, for example, a CPU, a general-purpose processor, a DSP, an ASIC, an FPGA or other programmable logic device, a transistor logic device, a hardware component, or any combination thereof. Which may implement or execute the various illustrative logical blocks, modules, and circuits described in connection with the embodiment disclosure. The processor described above may also be a combination of computing functions, e.g., comprising one or more microprocessors, DSPs and microprocessors, and the like. The communication module 71 may be a transceiver, a transceiver circuit, a communication interface, or the like (e.g., may be the radio frequency unit described above in the section 30 of fig. 3). The storage module 72 may be a memory.
When the processing module 70 is a processor, the communication module 71 is a transceiver, and the storage module 72 is a memory, the processor, the transceiver, and the memory may be connected by a bus. The bus may be a PCI bus or an EISA bus, etc. The bus may be divided into an address bus, a data bus, a control bus, etc.
In the method and apparatus for determining a V2X service transmission path provided in the embodiment of the present invention, after receiving a V2X service request, the MEC device carries the feature information of the V2X service in the V2X service request, and then the MEC device may determine whether to continue to transmit the V2X service by using the current communication interface according to the signal quality of the current communication interface and the feature information of the V2X service received by the MEC device. Wherein the characteristic information of the V2X service comprises at least one of the following items: service identification of the V2X service, target time delay of the V2X service, and an area range corresponding to the V2X service. Because the MEC equipment can determine to adopt a proper communication interface to transmit the V2X service according to the characteristic information of the V2X service carried in the V2X request, the smooth transmission of the V2X service can be ensured to a certain extent.
In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented using a software program, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, cause the flow or functions according to embodiments of the invention, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored on a computer readable storage medium or transmitted from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by wire (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device including one or more available media integrated servers, data centers, and the like. The usable medium may be a magnetic medium (e.g., floppy disk, magnetic tape), an optical medium (e.g., Digital Video Disk (DVD)), or a semiconductor medium (e.g., Solid State Drive (SSD)), among others.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (6)

1. A method for determining a V2X traffic transmission path, comprising:
the method comprises the following steps that the mobile edge computing MEC equipment receives a V2X service request, wherein the V2X service request carries the characteristic information of the V2X service, and the characteristic information of the V2X service comprises at least one of the following items: service identification of the V2X service, target time delay of the V2X service, and an area range corresponding to the V2X service;
the MEC equipment receives the signal quality of a current communication interface, wherein the current communication interface is a communication interface adopted by a first vehicle-mounted unit OBU for carrying out V2X service transmission, and the communication interface comprises a PC5 interface or a Uu interface;
when the signal quality of the current communication interface is greater than or equal to a signal quality threshold, if the current communication interface is a Uu interface, the MEC device performs the following steps one, two and three to determine whether to continue to transmit the V2X service by using the current communication interface:
the method comprises the following steps: when other OBUs except the first OBU in the area range corresponding to the V2X service do not allow the transmission of the V2X service by adopting the Uu interface, determining to switch the Uu interface to a PC5 interface; otherwise, executing the step two;
step two: when the base station corresponding to the other OBU does not allow the processing of the V2X service identified by the service identifier, determining to switch the current communication interface from the Uu interface to a PC5 interface; otherwise, executing the third step;
step three: when the Uu interface is adopted to transmit the V2X service, and the time delay of the V2X service is less than or equal to the target time delay of the V2X service, determining to continuously adopt the Uu interface to transmit the V2X service; otherwise, determining to switch the current communication interface from the Uu interface to a PC5 interface;
when the signal quality of the current communication interface is greater than or equal to a signal quality threshold, if the current communication interface is a PC5 interface, the MEC device performs the following steps four, five, and six to determine whether to continue to transmit the V2X service using the current communication interface:
step four: when other OBUs except the first OBU in the area range corresponding to the V2X service do not allow the V2X service to be transmitted by adopting the PC5 interface, determining to switch the current communication interface from the PC5 interface to a Uu interface; otherwise, executing the step two;
step five: when the base station corresponding to the other OBU does not allow the processing of the V2X service identified by the service identifier, determining to switch the current communication interface from the PC5 interface to a Uu interface; otherwise, executing the third step;
step six: and under the condition that the PC5 interface is adopted to transmit the V2X service, when the V2X service delay is greater than the target delay of the V2X service, the first OBU is informed of the failure of transmitting the V2X service, otherwise, the PC5 interface is determined to be continuously adopted to transmit the V2X service.
2. The method for determining the transmission path of the V2X service according to claim 1, wherein the MEC device determines whether to continue to transmit the V2X service by using the current communication interface according to the signal quality of the current communication interface and the feature information of the V2X service, comprising:
when the signal quality of the current communication interface is smaller than a signal quality threshold value, the MEC equipment determines to switch the current communication interface.
3. A method for determining a transmission path of V2X traffic,
a base station receives a V2X service request, wherein the V2X service request carries the characteristic information of V2X service, and the characteristic information of V2X service includes at least one of the following items: service identification of the V2X service, target time delay of the V2X service, and an area range corresponding to the V2X service;
the base station determines whether the base station allows processing the V2X service according to the characteristic information of the V2X service;
when the base station does not allow the V2X service to be processed, the base station forwards the V2X service request to a mobile edge computing MEC device;
determining that the base station is not allowed to process the V2X service when any one of the following conditions is not satisfied:
the area range corresponding to the V2X service is positioned outside the coverage range of the base station;
the base station does not allow processing of the V2X service identified by the service identification;
when the base station processes the V2X service, the time delay of the V2X service is greater than the target time delay of the V2X service.
4. A mobile edge computing, MEC, apparatus comprising a receiving module and a determining module;
the receiving module is used for receiving the V2X service request and receiving the signal quality of the current communication interface; wherein the V2X service request carries feature information of a V2X service, and the feature information of the V2X service includes at least one of the following items: service identification of the V2X service, target time delay of the V2X service, and an area range corresponding to the V2X service; the current communication interface is a communication interface adopted by a first vehicle-mounted unit OBU for V2X service transmission, and the communication interface comprises a PC5 interface or a Uu interface;
the determining module is specifically configured to, when the signal quality of the current communication interface is greater than or equal to a signal quality threshold, if the current communication interface is a Uu interface, perform the following first, second, and third steps to determine whether to continue to transmit the V2X service using the current communication interface:
the method comprises the following steps: when other OBUs except the first OBU in the area range corresponding to the V2X service do not allow the transmission of the V2X service by adopting the Uu interface, determining to switch the current communication interface from the Uu interface to a PC5 interface; otherwise, executing the step two;
step two: when the base station corresponding to the other OBU does not allow the processing of the V2X service identified by the service identifier, determining to switch the current communication interface from the Uu interface to a PC5 interface; otherwise, executing the third step;
step three: when the Uu interface is adopted to transmit the V2X service, and the time delay of the V2X service is less than or equal to the target time delay of the V2X service, determining to continuously adopt the Uu interface to transmit the V2X service; otherwise, determining to switch the current communication interface from the Uu interface to a PC5 interface;
the determining module is specifically configured to, when the signal quality of the current communication interface is greater than or equal to a signal quality threshold, if the current communication interface is a PC5 interface, execute the following fourth, fifth, and sixth steps to determine whether to continue to transmit the V2X service using the current communication interface:
step four: when other OBUs except the first OBU in the area range corresponding to the V2X service do not allow the V2X service to be transmitted by adopting the PC5 interface, determining to switch the current communication interface from the PC5 interface to a Uu interface; otherwise, executing the step two;
step five: when the base station corresponding to the other OBU does not allow the processing of the V2X service identified by the service identifier, determining to switch the current communication interface from the PC5 interface to a Uu interface; otherwise, executing the third step;
step six: when the PC5 interface is adopted to transmit the V2X service and the V2X service delay is less than or equal to the target delay of the V2X service, determining to continuously adopt the PC5 interface to transmit the V2X service; otherwise, the first OBU is informed that the transmission of the V2X service fails.
5. The MEC apparatus of claim 4 wherein,
the determining module is specifically configured to determine to switch the current communication interface when the signal quality of the current communication interface is less than a signal quality threshold.
6. A base station is characterized by comprising a receiving module, a determining module and a sending module;
the receiving module is configured to receive a V2X service request, where the V2X service request carries feature information of a V2X service, and the feature information of the V2X service includes at least one of the following items: service identification of the V2X service, target time delay of the V2X service, and an area range corresponding to the V2X service;
the determining module is configured to determine whether the base station allows processing the V2X service according to the characteristic information of the V2X service;
the sending module is configured to forward the V2X service request to a mobile edge computing MEC device when the base station does not allow the V2X service to be processed;
the determining module is specifically configured to determine that the base station is not allowed to process the V2X service when any one of the following conditions is not satisfied:
the area range corresponding to the V2X service is positioned outside the coverage range of the base station;
the base station does not allow processing of the V2X service identified by the service identification;
when the base station processes the V2X service, the time delay of the V2X service is greater than the target time delay of the V2X service.
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