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WO2017147904A1 - 消息发送方法和装置 - Google Patents

消息发送方法和装置 Download PDF

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Publication number
WO2017147904A1
WO2017147904A1 PCT/CN2016/075636 CN2016075636W WO2017147904A1 WO 2017147904 A1 WO2017147904 A1 WO 2017147904A1 CN 2016075636 W CN2016075636 W CN 2016075636W WO 2017147904 A1 WO2017147904 A1 WO 2017147904A1
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WO
WIPO (PCT)
Prior art keywords
communication path
communication
terminal device
service
network device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2016/075636
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English (en)
French (fr)
Inventor
肖潇
华尧
李明超
韩广林
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huawei Technologies Co Ltd
Original Assignee
Huawei Technologies Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Priority to PCT/CN2016/075636 priority Critical patent/WO2017147904A1/zh
Priority to EP16892095.7A priority patent/EP3410663B1/en
Priority to CN201680083186.9A priority patent/CN108886510B/zh
Publication of WO2017147904A1 publication Critical patent/WO2017147904A1/zh
Priority to US16/118,178 priority patent/US10887740B2/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W4/00Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/30Services specially adapted for particular environments, situations or purposes
    • H04W4/40Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
    • H04W4/46Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P] for vehicle-to-vehicle communication [V2V]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00Routing or path finding of packets in data switching networks
    • H04L45/22Alternate routing
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00Network arrangements or protocols for supporting network services or applications
    • H04L67/01Protocols
    • H04L67/12Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/14Multichannel or multilink protocols
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W4/00Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/70Services for machine-to-machine communication [M2M] or machine type communication [MTC]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W40/00Communication routing or communication path finding
    • H04W40/02Communication route or path selection, e.g. power-based or shortest path routing
    • H04W40/12Communication route or path selection, e.g. power-based or shortest path routing based on transmission quality or channel quality
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W76/00Connection management
    • H04W76/10Connection setup
    • H04W76/14Direct-mode setup
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W76/00Connection management
    • H04W76/20Manipulation of established connections
    • H04W76/27Transitions between radio resource control [RRC] states
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/08Configuration management of networks or network elements
    • H04L41/0803Configuration setting
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W24/00Supervisory, monitoring or testing arrangements
    • H04W24/10Scheduling measurement reports ; Arrangements for measurement reports
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/20Control channels or signalling for resource management

Definitions

  • the present invention relates to the field of communication systems, and in particular, to a message sending method and apparatus.
  • V2V communication is a communication technology for data transmission and information exchange between a vehicle and a vehicle through wireless communication technology.
  • ITS Intelligent Transportation System
  • V2V communication mainly provides and supports road traffic safety related applications and service transmission, which is widely considered to improve vehicle safety and reduce traffic. The key technology of the accident.
  • the V2V service carried by the V2V communication is realized by transmitting a V2V message
  • the V2V message mainly includes some information related to the running state of the vehicle, such as at least one of a vehicle speed, a traveling direction, a latitude and longitude, an acceleration, a brake, and a lane change, And/or some information related to the surrounding road environment, such as at least one of an accident, road construction, traffic facility failure, and the like.
  • the vehicle can perform V2V message interaction with other vehicles around it, so that the vehicle driving system can timely obtain road condition information or receive information service related to vehicle driving safety, and assist the vehicle driver or vehicle driving system to predict the danger and Take appropriate action to avoid accidents as much as possible.
  • V2V communication is related to the key information of vehicle driving safety, it is necessary to carry out V2V message interaction between vehicles in time and accurately, thus having "high reliability, short delay" communication requirements.
  • LTE-based V2V communication is an important part of this standardization work, providing two communication technologies: device to device (D2D) direct communication and LTE base station relay communication.
  • D2D direct communication technology allows the user equipment (UE) to communicate directly through the PC5 interface.
  • the transmission delay is relatively low. However, due to the limited resources, V2V message transmission congestion and data collision are easily caused.
  • the LTE base station transit communication technology communicates through the Uu interface, and the reliability is high, but the UE needs to first send data to the base station, and then the base station forwards the data to the base station. For other UEs, the transmission delay is relatively high and resources are occupied. It can be seen that whether the user equipment uses the PC5 interface or the Uu interface for V2V communication, it may not be able to meet the communication requirements of the V2V service.
  • the embodiment of the invention provides a message sending method and device for a V2X service, which can flexibly execute a V2X service.
  • the first aspect provides a method for sending a message of a V2X service, including:
  • the terminal device determines a communication path for the V2X service, the one communication path is selected from the at least two communication paths, the at least two communication paths including the first communication path and the second communication path, the first communication path a communication path for communicating through the PC5 interface, the second communication path being a communication path for communicating through the Uu interface;
  • the terminal device can determine a communication path for the V2X service, and the one communication path is selected from the at least two communication paths, so that the terminal device has the flexibility to select a communication path for the V2X service when transmitting the message of the V2X service.
  • the embodiment of the present invention does not specifically limit the V2X service, and any V2X service that can communicate with the first communication path and the second communication path can apply the technical solution of the embodiment of the present invention.
  • the V2X service can be used. It is a V2V service, a V2P service, or a V2I service, and it can also be a new V2X service.
  • the terminal device determines a communication path for the V2X service, including:
  • the terminal device receives indication information from the network device, the indication information is used to indicate the one communication path for the V2X service, and the one communication path indicated by the indication information is that the network device is from the Selected from at least two communication paths;
  • the terminal device determines the one communication path according to the indication information.
  • the network device selects the communication path for the V2X service of the terminal device, and does not require the terminal device to select the communication path by itself, which saves the processing resources of the terminal device, and the network device selects the communication path for the terminal device in the coverage area, and can make the network device The overall communication path of the terminal device is scheduled.
  • the method before the determining, by the terminal device, a communication path for the V2X service, the method further includes:
  • the terminal device sends first identifier information to the network device, where the first identifier information is used to request a communication path for the V2X service.
  • the terminal device sends the identifier information. If the indication information of the network device is not received within a predetermined time, the V2X service is stopped, or the terminal device selects the one communication path from the at least two communication paths.
  • the method before the determining, by the terminal device, a communication path for the V2X service, the method further includes:
  • the terminal device sends a notification message to the network device.
  • the notification message includes information of the V2X service or status information of the terminal device.
  • the terminal device may use the information of the V2X service or the foregoing before determining a communication path for the V2X service.
  • the status information of the terminal device is reported to the network device.
  • the notification message sent by the terminal device to the network device may include various related information, which is not limited by the embodiment of the present invention.
  • the method before the determining, by the terminal device, a communication path for the V2X service, the method further includes:
  • the terminal device sends the wireless environment measurement information of the first communication path and/or the wireless environment measurement information of the second communication path to the network device.
  • the terminal device sends the wireless environment measurement information of the first communication path and/or the wireless environment measurement information of the second communication path to the network device by using a radio resource control RRC dedicated message.
  • the terminal device sends the message category information of the V2X service, or the wireless environment measurement information of the first communication path, and/or the wireless environment measurement information of the second communication path to the network device, so that the terminal device can make
  • the network device selects a more suitable communication path from the at least two communication paths based on the above information to transmit a message of the V2X service, for example, selecting a communication path that is more reliable or lower.
  • the terminal device receives the indication information from the network device, including:
  • the terminal device receives the indication information by using an RRC dedicated message sent by the network device.
  • the RRC dedicated message sent by the network device is a connection reconfiguration message RRCConnectionReconfiguration.
  • the one communication path indicated by the indication information is the first communication path
  • the method further includes:
  • the terminal device receives configuration information of a D2D direct communication resource pool from the network device, where the D2D direct communication resource pool is configured for the first communication path.
  • the terminal device determines a communication path for the V2X service, including:
  • the terminal device selects the one communication path from the at least two communication paths.
  • the selecting, by the terminal device, the one communication path from the at least two communication paths may include: the terminal device selecting, according to message category information of the V2X service, from the at least two communication paths.
  • the one communication path may include: the terminal device selecting, according to message category information of the V2X service, from the at least two communication paths.
  • the one communication path may include: the terminal device selecting, according to message category information of the V2X service, from the at least two communication paths. The one communication path; or
  • the terminal device selects the one communication path from the at least two communication paths based on wireless environment measurement information of the first communication path and/or wireless environment measurement information of the second communication path.
  • the terminal device selects the one communication path from the at least two communication paths by itself, does not need to send a request message to the network device, and requests the network device to select the one communication path, which can save network resources. Further, The terminal device may be caused to select a more suitable communication path from the at least two communication paths based on the above information to transmit the message of the V2X service, for example, to select a communication path that is more reliable or lower.
  • the terminal device before the terminal device determines a communication path for the V2X service, the terminal device sends the second identifier information to the network device, where the second identifier information is used to request to configure the D2D direct communication resource for the first communication path.
  • the method further includes:
  • the terminal device establishes a communication connection based on the second communication path.
  • the terminal device Before the terminal device determines a communication path for the V2X service, the terminal device establishes the first communication path and the second communication path for the V2X service, that is, the first communication path. And the second communication path exists in parallel. In this way, after the terminal device determines a communication path for the V2X service, if the determined one communication path is the established first communication path or the second communication path, the terminal device may directly send the determined one communication path.
  • the message of the V2X service reduces the message transmission delay.
  • the terminal device receives the configuration information of the D2D direct communication resource pool from the network device, including:
  • the terminal device receives the configuration information from the network device by using an RRC dedicated message.
  • the D2D direct communication resource pool includes a dedicated resource pool.
  • the private resource pool is similar to the resource pool in the prior art.
  • the private resource pool is also a set of time and frequency resources used for wireless communication, but the private resource pool is a V2X service.
  • a unique resource pool that is, only V2X services can be used, and other services cannot be used.
  • the terminal device can obtain resources for the V2X service in time.
  • the terminal device sends the first identifier information to the network device, including:
  • the terminal device sends the first identifier information to the network device by using an RRC dedicated message.
  • the RRC dedicated message that transmits the identification information to the network device is D2D user information SidelinkUEInformation.
  • the terminal device sends the second identifier information to the network device, including:
  • the terminal device sends the second identifier information to the network device by using an RRC dedicated message.
  • the RRC dedicated message that transmits the identification information to the network device is D2D user information SidelinkUEInformation.
  • the method further includes:
  • the terminal device stops using the currently used communication path.
  • the communication path determined by the terminal device is different from the communication path currently used by the terminal device, the communication path currently used by the terminal device is stopped, and the message of the V2X service is sent through the determined communication path, so that the terminal device can be flexible.
  • the communication path is selected for the V2X service, and the message of the V2X service is sent through the selected communication path.
  • the terminal device determines a trigger condition of the communication path for the V2X service, including at least one of the following:
  • the V2X service is initialized
  • the message of the V2X service is timed out
  • the load of the second communication path is higher than the first threshold
  • the terminal device enters the coverage of the wireless communication system from outside the coverage of the wireless communication system.
  • the terminal device may perform a corresponding step of determining a communication path for the V2X service when at least one of the foregoing triggering conditions is reached, and then send the message of the V2X service by using the determined communication path.
  • the triggering condition is met, the V2X service is required to be executed, or the communication environment is changed.
  • the terminal device reaches the trigger condition, the terminal device performs a corresponding step of determining the communication path for the V2X service, so that the terminal device can flexibly be the V2X.
  • the service selects a communication path. Further, it is also possible to select a more suitable communication path from at least two communication paths to transmit a message of the V2X service, for example, to select a communication path that is more reliable or lower.
  • a V2X service processing method is provided.
  • the method includes:
  • the network device selects one communication path from at least two communication paths, the at least two communication paths including a first communication path and a second communication path, where the first communication path is a communication path for communicating through a PC5 interface, The second communication path is a communication path that communicates through the Uu interface;
  • the network device sends indication information to the terminal device, where the indication information indicates that the one communication path is a communication path of the V2X service.
  • the network device selects a communication path for the V2X service performed by the terminal device, and does not require the terminal device to select a communication path by itself, which saves processing resources of the terminal device, and the network device selects a communication path for the terminal device in the coverage area, and can make the network device The overall communication path of the terminal device is scheduled.
  • the method further includes:
  • the network device receives the identification information from the terminal device, the identification information being used to request to indicate the communication path for the V2X service.
  • the method further includes:
  • the network device selects one communication path from at least two communication paths, including:
  • the network device is based on message category information of the V2X service from the at least two communication paths Select a communication path.
  • the method further includes:
  • the network device selects one communication path from at least two communication paths, including:
  • the network device selects one communication path from the at least two communication paths based on wireless environment measurement information of the first communication path and/or wireless environment measurement information of the second communication path.
  • the network device sends a message of the V2X service by selecting a more suitable communication path from the at least two communication paths based on the foregoing information, for example, selecting a communication path that is more reliable or lower.
  • the one communication path is a first communication path
  • the method further includes:
  • the network device sends configuration information of a D2D direct communication resource pool to the terminal device, where the D2D direct communication resource pool is configured for the first communication path.
  • the D2D direct communication resource pool includes a dedicated resource pool.
  • the network device receives the identifier information from the terminal device, including:
  • the network device receives the identifier information by using a radio resource control RRC dedicated message sent by the terminal device.
  • the network device sends the indication information to the terminal device, including:
  • the network device sends the indication information to the terminal device by using an RRC dedicated message.
  • the network device sends the configuration information of the D2D direct communication resource pool to the terminal device, including:
  • the network device sends configuration information of the D2D direct communication resource pool to the terminal device by using an RRC dedicated message.
  • the RRC dedicated message for sending the configuration information to the terminal device is an RRC connection reconfiguration message RRCConnectionReconfiguration.
  • a terminal device including:
  • a processing module configured to determine a communication path for the V2X service, the one communication path is selected from the at least two communication paths, where the at least two communication paths include a first communication path and a second communication path, where A communication path is a communication path for communicating through a PC5 interface, and the second communication path is a communication path for communicating through the Uu interface;
  • a processing module configured to send, by using the one communication path, a message of the V2X service.
  • the transceiver module is configured to receive indication information from the network device, where the indication information is used to indicate the one communication path for the V2X service, where the one communication path indicated by the indication information is The network device is selected from the at least two communication paths;
  • the processing module is configured to determine the one communication path according to the indication information.
  • the transceiver module is further configured to: before receiving the indication information from the network device, send the first identifier information to the network device, where the first identifier information is used to request to indicate the communication path for the V2X service.
  • the transceiver module is further configured to: before receiving the indication information from the network device, send message category information of the V2X service to the network device; and/or
  • the transceiver module is further configured to send the wireless environment measurement information of the first communication path and/or the wireless environment measurement information of the second communication path to the network device before receiving the indication information from the network device.
  • the transceiver module sends the wireless environment measurement information of the first communication path and/or the wireless environment measurement information of the second communication path to the network device by using a radio resource control RRC dedicated message.
  • the transceiver module receives the indication information from the network device, including:
  • the transceiver module receives the indication information by using an RRC dedicated message sent by the network device.
  • the RRC dedicated message sent by the network device is a connection reconfiguration message RRCConnectionReconfiguration.
  • the communication path indicated by the indication information is the first communication path
  • the transceiver module is further configured to: before receiving the message of the V2X service by using the one communication path, receive configuration information of a D2D direct communication resource pool from the network device, where the D2D direct communication resource pool is The first communication path is configured.
  • the processing module determines a communication path for the V2X service, including:
  • the processing module selects the one communication path from the at least two communication paths.
  • the processing module by selecting the one of the at least two communication paths, may include:
  • the processing module selects the one communication path from the at least two communication paths based on message category information of the V2X service; or
  • the processing module selects the one communication path from the at least two communication paths based on wireless environment measurement information of the first communication path and/or wireless environment measurement information of the second communication path.
  • the transceiver module is further configured to: before the processing module determines a communication path for the V2X service, send the second identifier information to the network device, where the second identifier information is used to request the first communication Path configuration D2D direct communication resource pool;
  • the transceiver module is further configured to: before the processing module determines a communication path for the V2X service, receive configuration information of the D2D direct communication resource pool from the network device;
  • the processing module is further configured to establish a communication connection based on the second communication path before determining a communication path for the V2X service.
  • the transceiver module receives the configuration information of the D2D direct communication resource pool from the network device, including:
  • the transceiver module receives the configuration information by using an RRC dedicated message sent by the network device.
  • the D2D direct communication resource pool includes a dedicated resource pool.
  • the transceiver module sends the first identifier information to the network device, including:
  • the terminal device sends the first identifier information to the network device by using an RRC dedicated message.
  • the RRC dedicated message that sends the identifier information to the network device is D2D user information Sidelink UEInformation.
  • the sending module sends the second identifier information to the network device, including:
  • the sending module sends the second identifier information to the network device by using an RRC dedicated message.
  • the RRC dedicated message that sends the identifier information to the network device is D2D user information Sidelink UEInformation.
  • the processing module is further configured to: after determining a communication path for the V2X service, determine that the communication path currently used by the V2X service is a communication path different from the one communication path;
  • the processing module stops using the currently used communication path.
  • the processing module determines a trigger condition of a communication path for the V2X service, including, for example, At least one of the following:
  • the V2X service is initialized
  • the message of the V2X service is timed out
  • the load of the second communication path is higher than the first threshold
  • the terminal device enters the coverage of the wireless communication system from outside the coverage of the wireless communication system.
  • a network device including:
  • a processing module configured to select one communication path from at least two communication paths, where the at least two communication paths include a first communication path and a second communication path, where the first communication path is a communication path that communicates through a PC5 interface
  • the second communication path is a communication path that communicates through the Uu interface
  • a transceiver module configured to send indication information to the terminal device, where the indication information indicates that the one communication path is a communication path of the V2X service.
  • the transceiver module is further configured to: before the processing module selects a communication path from the at least one of the communication paths, receive the identifier information, where the identifier information is used to request to indicate the communication path for the V2X service. ;
  • the transceiver module is further configured to: before the processing module selects one communication path from the at least two communication paths, receive message category information of the V2X service from the terminal device;
  • the processing module selects one communication path from at least two communication paths, including:
  • the processing module selects one communication path from the at least two communication paths based on message category information of the V2X service.
  • the transceiver module is further configured to: before the processing module selects one communication path from the at least two communication paths, receive wireless environment measurement information of the first communication path from the terminal device, and/or Wireless environment measurement information of the second communication path;
  • the processing module selects one communication path from at least two communication paths, including:
  • the processing module selects one communication path from the at least two communication paths based on wireless environment measurement information of the first communication path and/or wireless environment measurement information of the second communication path.
  • the one communication path is a first communication path
  • the transceiver module is further configured to: send the indication information to the terminal device, or send the indication information to the terminal device, and send configuration information of the D2D direct communication resource pool to the terminal device,
  • the D2D direct communication resource pool is configured for the first communication path.
  • the D2D direct communication resource pool includes a dedicated resource pool.
  • the transceiver module receives the identifier information from the terminal device, including:
  • the transceiver module receives the identifier information by using a radio resource control RRC dedicated message sent by the terminal device.
  • the transceiver module sends the indication information to the terminal device, including:
  • the transceiver module sends the indication information to the terminal device by using an RRC dedicated message.
  • the transceiver module sends configuration information of the D2D direct communication resource pool to the terminal device, including:
  • the transceiver module sends configuration information of the D2D direct communication resource pool to the terminal device by using an RRC dedicated message.
  • the RRC dedicated message for sending the configuration information to the terminal device is an RRC connection reconfiguration message RRCConnectionReconfiguration.
  • a communication path determined for the V2X service is selected from at least two communication paths, where the at least two communication paths include a first communication path and a second communication path, where the first communication path is A communication path for communication through the PC5 interface, the second communication path being a communication path for communication through the Uu interface, thereby being able to flexibly determine a communication path for the V2X service.
  • FIG. 1 is a communication scenario diagram of an embodiment of the present invention
  • FIG. 2 is a schematic flowchart of a method for sending a message of a V2X service according to an embodiment of the present invention
  • FIG. 3 is a schematic diagram of a first example according to an embodiment of the present disclosure.
  • FIG. 4 is a schematic diagram of a second example according to an embodiment of the present disclosure.
  • FIG. 5 is a schematic diagram of a third example according to an embodiment of the present disclosure.
  • FIG. 6 is a schematic structural diagram of a terminal device according to an embodiment of the present disclosure.
  • FIG. 7 is a schematic structural diagram of a network device according to an embodiment of the present invention.
  • the user equipment can directly communicate with other user equipments in the form of broadcast.
  • the air interface that directly communicates between user equipments is called a PC5 interface
  • the corresponding wireless link is called a D2D link (Sidelink, SL).
  • the UE configures the wireless protocol stack corresponding to the PC5 interface and processes the data through the protocol stack, and transmits the processed data through the PC5 interface after acquiring the D2D direct communication resource.
  • the LTE system will configure a part of the Resource Pool dedicated to D2D direct communication.
  • a resource pool refers to a set of time and frequency resources used for wireless communication.
  • the D2D direct communication data can only be transmitted on the PC5 interface by using the D2D direct communication resource in the D2D direct communication resource pool configured by the LTE system.
  • the UE has two ways of acquiring D2D direct communication resources, which are respectively based on a mode of UE self-selection and a method based on base station scheduling.
  • the method based on the autonomous selection of the UE means that the UE selects resources autonomously from the D2D direct communication resource pool configured by the base station, and the base station scheduling method refers to the base station selecting resources for the UE from the D2D direct communication resource pool.
  • the D2D direct communication technology has the advantages of low delay and less resources, in the case of limited D2D direct communication resources and/or large traffic, the D2D direct communication resource pool has a high load, and the UE selects autonomous resources.
  • the method will cause the data transmitted by the UE to collide frequently, causing serious interference of data transmission between UEs, which significantly affects communication performance.
  • the transmission data of the UE may be difficult to obtain sufficient transmission resources in time, thereby causing data transmission congestion, forcing the UE to discard data packets that cannot be transmitted in time, and seriously affecting the user service environment.
  • the UE In the LTE base station transit communication technology, the UE first sends a V2V message to the base station, and then the base station sends the V2V message to other UEs for receiving.
  • the air interface that the UE performs uplink transmission or downlink transmission with the base station is called a Uu interface.
  • the UE sends the V2V message to the base station by means of an uplink (UL) unicast, and the base station transmits the V2V message to other UEs by using a downlink (DL) broadcast.
  • UL uplink
  • DL downlink
  • the UE configures the radio bearer part of the Uu interface, processes the data through the radio protocol stack corresponding to the Uu interface, and configures the base station-serving gateway (S-GW) through the MME (mobility management entity).
  • the PDN gateway (P-GW) is the core network bearer part of the V2V server.
  • the uplink resources of the LTE system are used to transmit the processed data through the Uu interface.
  • the LTE base station transit communication technology adopts a centralized resource scheduling mode of the base station, and the base station schedules phases for each UE.
  • the mutually orthogonal radio resources effectively solve the interference problem of communication between UEs, and are a highly reliable transmission mode.
  • the LTE base station relay communication technology requires the transmitting end UE to first transmit data to the base station by using the uplink resource, and then the base station uses the downlink resource to forward the data to the receiving end UE, so as to implement communication and information interaction between the UEs, and directly allow the UE to directly communicate with each other.
  • the resource utilization rate of the LTE base station relay communication technology is relatively low, and the delay is relatively high.
  • the present invention provides a message sending method and device for a V2X service, which can flexibly send a message of a V2X service by using the above-mentioned introduction and advantages and disadvantages of the V2V communication technology.
  • FIG. 1 is a schematic diagram of a communication scenario according to an embodiment of the present invention.
  • the communication scenario diagram is only illustrative, and the scope of application of the present invention is not limited thereto.
  • the communication scenario map includes the vehicle user equipments V-UE1 to V-UE6 and the base station e-NodeB.
  • the communication scenario map may further include, for example, an MME.
  • the core network bearer part such as the S-GW/P-GW and the V2V server, is not limited thereto.
  • V2V communication can be performed between the vehicle user equipments V-UE.
  • the vehicle user equipment V-UE1 can perform V2V communication with other vehicle user equipments through the LTE base station relay communication technology, and the V-UE1 passes through the Uu interface.
  • the V2V message is uploaded to the base station by means of UL unicast, and the base station broadcasts the V2V message to other vehicle user equipments by means of DL broadcast.
  • the vehicle user equipment V-UE4 can perform V2V communication with other vehicle user equipments through D2D direct communication technology, and the V-UE4 broadcasts V2V messages to other vehicle user equipments through the PC5 interface using the D2D link SL.
  • V2V service is introduced as an example in the foregoing part, the person skilled in the art should know that the embodiment of the present invention is applicable not only to the V2V service but also to other V2X services, for example, for example. V2I, V2P, and new V2X services.
  • the terminal device may be a device that provides voice and/or data connectivity to a user, a handheld device with a wireless connection function, or other processing device connected to a wireless modem.
  • the wireless terminal can communicate with one or more core networks via a Radio Access Network (RAN), which can be a mobile terminal, such as a mobile phone (or "cellular" phone) and a computer with a mobile terminal.
  • RAN Radio Access Network
  • RAN can be a mobile terminal, such as a mobile phone (or "cellular" phone) and a computer with a mobile terminal.
  • RAN Radio Access Network
  • RAN Radio Access Network
  • a mobile terminal such as a mobile phone (or "cellular" phone)
  • a computer with a mobile terminal such as a mobile phone (or "cellular" phone)
  • it may be a portable, pocket, handheld, computer built-in or in-vehicle mobile device (e.g., vehicle user equipment V-UE) that exchanges language and/or data with the wireless access network.
  • V-UE vehicle user
  • a wireless terminal may also be referred to as a system, a subscriber unit (Subscriber Unit), a subscriber station (Subscriber) Station), mobile station, mobile station, remote station, access point, remote terminal, access terminal, user terminal Terminal), User Agent, User Device, or User Equipment.
  • PCS Personal Communication Service
  • SIP Session Initiation Protocol
  • WLL Wireless Local Loop
  • PDA Personal Digital Assistant
  • a wireless terminal may also be referred to as a system, a subscriber unit (Subscriber Unit), a subscriber station (Subscriber) Station), mobile station, mobile station, remote station, access point, remote terminal, access terminal, user terminal Terminal), User Agent, User Device, or User Equipment.
  • the network device involved in the embodiments of the present invention may be a base station, or an access point, or may refer to a device in the access network that communicates with the wireless terminal through one or more sectors on the air interface.
  • the base station can be used to convert the received air frame to the IP packet as a router between the wireless terminal and the rest of the access network, wherein the remainder of the access network can include an Internet Protocol (IP) network.
  • IP Internet Protocol
  • the base station can also coordinate attribute management of the air interface.
  • the base station may be a base station (BTS, Base Transceiver Station) in GSM or CDMA, or may be a base station (NodeB) in WCDMA, or may be an evolved base station (eNB or e-NodeB, evolutional Node B) in LTE. This application is not limited.
  • FIG. 2 is a flowchart of a method for sending a message of a V2X service according to an embodiment of the present invention. As shown in Figure 2, the method includes:
  • Step 201 The terminal device determines a communication path for the V2X service, where the one communication path is selected from the at least two communication paths, where the at least two communication paths include a first communication path and a second communication path, where the A communication path is a communication path for communicating through a PC5 interface, and the second communication path is a communication path for communicating through the Uu interface;
  • Step 202 The terminal device sends a message of the V2X service by using the one communication path.
  • the terminal device sends a message of the V2X service through a determined communication path, and the determined one communication path is selected from the at least two communication paths, thereby implementing flexible selection of the communication path for the V2X service.
  • a communication path determined by the terminal device for the V2X service is a first communication path, that is, a communication path for communicating through the PC5 interface, so the terminal device sends a message of the V2X service through the first communication path.
  • the terminal device configures the wireless protocol stack corresponding to the PC5 interface and processes the data through the protocol stack, and acquires the data after the D2D direct communication resource transmission processing.
  • the terminal device acquires the D2D direct communication resource from the D2D direct communication resource pool based on the autonomously selected manner, or the terminal device acquires the D2D direct communication resource from the D2D direct communication resource pool according to the base station scheduling manner.
  • the resource pool in which the terminal device acquires the D2D direct communication resource includes a dedicated resource pool.
  • the D2D direct communication resource used by the terminal device in the D2D direct communication in the technology comes from a resource pool dedicated to D2D direct communication in a part of the LTE system configuration, and the resource pool is actually a shared resource pool, and the resource pool is more A variety of V2X services and a variety of other D2D communication services are available.
  • a dedicated resource pool can be configured for a V2X service, which is similar to a resource pool in the prior art.
  • the private resource pool also refers to a set of time and frequency resources used for wireless communication, but
  • the dedicated resource pool is a resource pool unique to the V2X service, that is, dedicated to the V2X service, and other D2D services cannot be used. Therefore, when the terminal device sends the V2X service message through the first communication path, the D2D direct communication resource may be obtained from the private resource pool based on the self-selected manner, or may be obtained from the proprietary resource pool based on the base station scheduling manner. D2D direct communication resources.
  • the terminal device can also obtain the D2D direct communication resource from the shared resource pool and the dedicated resource pool, for example, preferentially obtain the D2D direct communication resource from the private resource pool, or simultaneously from the shared resource pool and the dedicated resource.
  • the pool acquires D2D direct communication resources.
  • the terminal device may receive the shared resource pool and/or the dedicated resource from the network device.
  • the configuration information of the pool for example, the terminal device receives the configuration information by using a radio resource control RRC connection reconfiguration message RRCConnectionReconfiguration sent by the network device, and may also receive the configuration information by using another RRC dedicated message.
  • a communication path determined by the terminal device for the V2X service is a second communication path, that is, a communication path for communicating through the Uu interface, so the terminal device sends a message of the V2X service through the second communication path.
  • the terminal device configures the wireless protocol stack corresponding to the Uu interface and processes the data through the protocol stack, and establishes an end-to-end connection between the terminal device and the base station, and configures a dedicated bearer, and transmits the processed data through the dedicated bearer.
  • the embodiment of the present invention may further include: determining, by the terminal device, that the communication path currently used by the V2X service is a communication path different from the one communication path; The terminal device stops using the currently used communication path. That is, when the communication path determined by the terminal device is different from the communication path currently used by the terminal device, the communication path currently used by the terminal device is stopped, and the message of the V2X service is transmitted through the determined communication path.
  • the triggering condition of the foregoing step 201 includes at least one of the following:
  • the V2X service is initialized
  • the message of the V2X service is timed out
  • the load of the second communication path is higher than the first threshold
  • the terminal device enters the coverage of the wireless communication system from outside the coverage of the wireless communication system.
  • the terminal device may perform a corresponding step of determining a communication path for the V2X service when at least one of the foregoing triggering conditions is reached, and then send the message of the V2X service by using the determined communication path.
  • the triggering condition is met, the V2X service is required to be executed, or the communication environment is changed.
  • the terminal device performs a corresponding step of determining the communication path for the V2X service, so that the terminal device can flexibly be the V2X.
  • the service selects the communication path, and further, can select a more suitable communication path from the at least two communication paths to send the message of the V2X service, for example, select a communication path with more reliable or lower latency, and how to select a more A suitable communication path will be described below.
  • the embodiment of the present invention further includes:
  • the terminal device sends identification information to the network device, where the identifier information is used to request to indicate a communication path for the V2X service. That is, the terminal device requests the network device to select a communication path for the V2X service. Optionally, the terminal device does not receive the indication sent by the network device within a predetermined time after sending the identifier information.
  • the indication information of the communication path of the V2X service stops executing the V2X service, or the terminal device selects the one communication path from the at least two communication paths by itself.
  • the embodiment of the present invention further includes:
  • the terminal device sends a notification message to the network device.
  • the notification message includes information of the V2X service or status information of the terminal device.
  • the terminal device may use the information of the V2X service or the foregoing before determining a communication path for the V2X service.
  • the status information of the terminal device is reported to the network device.
  • the notification message sent by the terminal device to the network device may include various related information, which is not limited by the embodiment of the present invention.
  • FIG. 3 is a flowchart of a V2X service message sending method according to an embodiment of the present invention.
  • FIG. 3 is a V2V service as an example. As shown in FIG. 3, the method includes:
  • Step 301 The network device selects one communication path from at least two communication paths, where the at least two communication paths include a first communication path and a second communication path, where the first communication path is to communicate through a PC5 interface.
  • a communication path, the second communication path being a communication path that communicates through the Uu interface.
  • the network device may select one communication path from the at least two communication paths in a random manner.
  • the network device selects one communication path from the at least two communication paths according to the message category information of the V2X service.
  • the network device receives message category information of the V2X service from the terminal device, for example, through a separate RRC dedicated The message is received by the message, or the message class information is received by the RRC SIDELINK UEInformation where the identifier information is located, which is not limited in this embodiment of the present invention.
  • the message category information of the V2X service for example, may be a Cooperative Awareness Message (CAM), a Decentralized Environmental Notification Message (DENM), a Basic Safety Message (BSM), and a vehicle.
  • the common car network service message category such as the Internet data (Telematics), is not limited in this embodiment of the present invention.
  • the network device After receiving the message category information of the V2X service, the network device selects a communication path corresponding to the message category information according to the message category information. Selecting a communication path according to the message category information of the V2X service, and flexibly selecting a more suitable communication path for the V2X service according to the characteristics and requirements of the V2X service. For example, the V2X service for the low latency requirement may select the first communication path.
  • the second communication path can be selected for the V2X service with high reliability requirements, which is not limited by the embodiment of the present invention.
  • the network device selects one communication path from the at least two communication paths according to the wireless environment measurement information of the first communication path and/or the wireless environment measurement information of the second communication path.
  • the network device receives wireless environment measurement information of the first communication path from the terminal device and/or the Wireless environment measurement information of the second communication path, for example, by using the above identification information Receiving, by the RRCSidelink UEInformation, the wireless environment measurement information of the first communication path and/or the wireless environment measurement information of the second communication path, or receiving the wireless environment measurement information of the first communication path by using an RRC dedicated message MeasurementReport / or wireless environment measurement information of the second communication path, or receiving wireless environment measurement information of the first communication path and/or wireless environment of the second communication path from a terminal device through other independent RRC dedicated messages
  • the measurement information is not limited in this embodiment of the present invention.
  • the wireless environment measurement information of the communication path that the terminal device sends to the network device may be obtained by reading from an appropriate storage location, or may be obtained by measurement.
  • the network device After receiving the wireless environment measurement information of the first communication path and/or the wireless environment measurement information of the second communication path, the network device according to the wireless environment measurement information of the first communication path and/or the The wireless environment measurement information of the second communication path selects a communication path.
  • the wireless environment measurement information of the first communication path may be resource pool load information of the PC5 interface
  • the wireless environment measurement information of the second communication path may be a cellular of the Uu interface.
  • Link quality when the resource pool load of the PC5 interface is lower than the first threshold, and/or the quality of the cellular link of the Uu interface is poor, the network device selects the first communication path; or, when the resource of the PC5 interface The network device selects the second communication path when the load is higher than the first threshold and/or the quality of the cellular link of the Uu interface is good.
  • the resource pool load of the PC5 interface for example, the time-frequency location of the D2D direct communication resource pool of the PC5 interface can be obtained by receiving the system information broadcast by the access network device, and the wireless signal strength is detected on the resources included in the D2D direct communication resource pool.
  • the resource pool load is determined according to the proportion of resources occupied in the resource pool.
  • the specific form of the wireless environment measurement information of each communication path is not limited, and the wireless environment measurement information of each communication path only needs to reflect the state of the communication path. Selecting one communication path according to the wireless environment measurement information of the first communication path and/or the wireless environment measurement information of the second communication path, and being able to learn the status of each communication path according to the wireless environment measurement information of each communication path, and further The V2X service selects a more suitable communication path, for example, selecting a lower latency and/or higher reliability communication path for the V2X service.
  • Step 302 The network device sends indication information to the terminal device, where the indication information indicates that the one communication path is a communication path of the V2X service.
  • Step 303 The terminal device receives indication information from the network device, where the indication information is used to indicate a communication path for the V2X service.
  • Step 304 The terminal device determines the communication path indicated by the indication information as the one communication path.
  • Step 305 The terminal device sends the message of the V2X service by using the one communication path.
  • the communication path determined by the terminal device for the V2X service is the first communication path
  • the step 305 may include: acquiring the configuration information of the resource pool from the base station, configuring the protocol stack corresponding to the PC5 interface, and processing the data through the protocol stack. Send processed data.
  • the communication path determined by the terminal device for the V2X service is the second communication path
  • the step 305 may include establishing an end-to-end connection and configuring a dedicated bearer based on the Uu interface, configuring a protocol stack corresponding to the Uu interface, and adopting the protocol. The stack processes the data and sends the processed data.
  • the terminal device determines a communication path for the V2X service
  • the implementation manner of the message for sending the V2X service through the one communication path may be referred to the description in the foregoing embodiment, and details are not described herein again.
  • the method further includes:
  • Step 300 The terminal device sends identifier information to the network device, where the identifier information is used to request a communication path for the V2X service.
  • the network device After receiving the identification information for requesting the communication path for the V2X service, the network device selects one communication path from the at least two communication paths as the communication path of the V2X service, in response to the identification information. .
  • the identifier information may be sent to the network device to select a communication path for the V2X service.
  • the identifier information may be an independent RRC dedicated message, or may be used as a field. Added to RRC Sidelink UEInformation for D2D direct communication.
  • the network device performs step 301 in response to the identification information to select a communication path for the V2X service.
  • the network device can also select a communication path for the V2X service at any time, and send the selected result to the terminal device through the indication information.
  • the terminal device determines the communication path selected by the network device as the communication path of the V2X service, and does not require the terminal device to select the communication path for the V2X service, thereby saving the processing resources of the terminal device, and the network device is the coverage.
  • the terminal device in the selection of the communication path can
  • the network device is configured to entirely schedule the communication path of the terminal device.
  • FIG. 4 is a flowchart of a method for sending a message of a V2X service according to an embodiment of the present invention. As shown in FIG. 4, the method includes:
  • Step 401 The terminal device determines a communication path for the V2X service, where the one communication path is that the terminal device selects from at least two communication paths, where the at least two communication paths include the first communication path and the second communication path.
  • the first communication path is a communication path for communicating through a PC5 interface
  • the second communication path is a communication path for communicating through a Uu interface
  • Step 402 The terminal device sends a message of the V2X service by using the one communication path.
  • the communication path determined by the terminal device for the V2X service is the first communication path
  • the step 402 may include: acquiring configuration information of the resource pool from the base station, configuring a protocol stack corresponding to the PC5 interface, and processing data through the protocol stack. Send processed data.
  • the communication path determined by the terminal device for the V2X service is the second communication path
  • the step 402 may include establishing an end-to-end connection and configuring a dedicated bearer based on the Uu interface, configuring a protocol stack corresponding to the Uu interface, and adopting the protocol. The stack processes the data and sends the processed data.
  • the terminal device determines a communication path for the V2X service
  • the implementation manner of the message for sending the V2X service through the one communication path may be referred to the description in the foregoing embodiment, and details are not described herein again.
  • the terminal device selects one of the at least two communication paths to send the message of the V2X service, and can determine the communication path for the V2X service more flexibly and efficiently.
  • the terminal device may further include:
  • Step 4001 The terminal device sends identifier information to the network device, where the identifier information is used to request to configure a D2D direct communication resource pool for the first communication path.
  • the terminal device may send the identifier information to request the network device to configure the D2D direct communication resource pool for the first communication path.
  • the identifier information may be an independent RRC dedicated message, or Can be added as a field to the RRC Sidelink UEInformation for D2D direct communication.
  • Step 4002 The terminal device receives configuration information of the D2D direct communication resource pool from the network device.
  • the network device After receiving the identifier information, the network device configures a D2D direct communication resource pool for the first communication path in response to the identifier information, and sends the configuration information to the terminal device.
  • the network device sends the configuration information by using an RRC connection reconfiguration message RRCConnectionReconfiguration, and may also send the configuration information by using another RRC dedicated message.
  • Step 4003 The terminal device establishes a communication connection based on the second communication path and configures a dedicated bearer.
  • the terminal device establishes the first communication path and the second communication path for the V2X service, that is, the first communication path and the second communication.
  • the paths exist in parallel.
  • step 4003 the terminal device establishes a communication connection based on the second communication path and configures a dedicated bearer, and sends, between step 4001, identifier information for requesting to configure a D2D direct communication resource for the first communication path,
  • the terminal device may perform step 4001 before performing step 4003, or step 4003 may be performed first, and then step 4001 may be performed, or steps 4001 and 4003 may be performed simultaneously.
  • the terminal device performs step 401 and step 402 in the foregoing embodiment, that is, after the terminal device establishes the first communication path and the second communication path for the V2X service, the terminal device is The V2X service determines a communication path.
  • the terminal device performs step 401 and step 402 in the foregoing embodiment, that is, after the terminal device establishes the first communication path and the second communication path for the V2X service, the terminal device is The V2X service determines a communication path.
  • the one communication path determined by the terminal device for the V2X service is the first After the communication path or the second communication path, the message of the V2X service may be directly sent through the determined first communication path or the second communication path.
  • the terminal device may switch the communication path of the message that is determined to be used to send the V2X service to the first communication path or the second communication path, and the determining and used to send the V2X service.
  • the communication path of the message is different from the communication path.
  • the terminal device establishes the first communication path and the second communication path, and the communication path determined by the terminal device for the V2X service is the first communication path, so the terminal device passes the first communication Transmitting, by the path, the message of the V2X service, the terminal device may switch the first communication path that performs the V2X service to the second communication path, that is, send the V2X service by using the second communication path. Message and stop using the first communication path.
  • the terminal device can be performed after a predetermined period of time
  • the step of switching or the terminal device may periodically switch the first communication path and the second communication path to send the message of the V2X service, or the terminal device detects the first communication path or the second communication path
  • Another communication path that differs in the communication path of the message that is determined and used to transmit the V2X service is more suitable for performing the V2X service.
  • the terminal device establishes the first communication path and the second communication path for the V2X service before determining a communication path for the V2X service, and further, when the terminal device is the V2X
  • the communication path determined by the service is the first communication path or the second communication path, and the message of the V2X service may be directly sent by using the determined communication path, and the beneficial effect is that after determining the communication path for performing the V2X service,
  • the V2X service can be executed faster.
  • the terminal device determines that a Radio Link Failure (RLF) occurs, and the terminal device switches the second communication path currently used by the V2X service to another communication path.
  • the first communication path is a communication path that communicates through a PC5 interface
  • the second communication path is a communication path that communicates through the Uu interface. For example, the terminal device switches the second communication path currently used by the V2X service to the first communication path.
  • RLF Radio Link Failure
  • the terminal device After the terminal device switches the second communication path currently used by the V2X service to the first communication path, the terminal device sends the V2X service message through the first communication path, for example, the terminal device establishes in advance The first communication path, or the terminal device may acquire the D2D direct communication resource and send the V2X service message through the first communication path, based on the mode selected by the UE or the method of the base station scheduling, optionally, the terminal The device may obtain the D2D direct communication resource from the abnormal resource pool, where the abnormal resource pool refers to a set of time and frequency resources used for wireless communication.
  • the abnormal resource pool refers to a set of time and frequency resources used for wireless communication.
  • the terminal device when the terminal device sends a message of the V2X service through the second communication path, the terminal device determines that the communication path can be switched after the RLF occurs, and the message of the V2X service is sent through the other communication path, so as to implement the RLF. Effective transmission.
  • an embodiment of the present invention further provides a terminal device.
  • the terminal device can perform the method in the foregoing embodiment. Therefore, the specific details can be referred to the description in the foregoing embodiment. To save space, the same content will not be described again.
  • the terminal device may include a processing module and a transceiver module, and the processing module Communicate with the transceiver module.
  • the terminal device may further include a storage module or the like.
  • the processing module is configured to determine a communication path for the V2X service, the one communication path is selected from the at least two communication paths, and the at least two communication paths include a first communication path and a second communication path,
  • the first communication path is a communication path that communicates through a PC5 interface
  • the second communication path is a communication path that communicates through the Uu interface;
  • the processing module is configured to send the message of the V2X service by using the one communication path.
  • the one communication path is selected from at least two communication paths, and may be selected by the network device from at least two communication paths.
  • the determining a communication path for the V2X service, where the one communication path is selected from the at least two communication paths includes:
  • the transceiver module sends identification information to the network device, where the identifier information is used to request a communication path for the V2X service;
  • the transceiver module receives the indication information from the network device, where the indication information is used to indicate a communication path for the V2X service, and the communication path indicated by the indication information is selected from the at least two communication paths;
  • the processing module determines the communication path indicated by the indication information as the one communication path.
  • the one communication path is selected from at least two communication paths, and the terminal device may be selected from at least two communication paths.
  • the processing module determines a communication path for the V2X service, where the one communication path is selected by the processing module from at least two communication paths.
  • the terminal device establishes a first communication path and a second communication path, that is, the first communication path, for the V2X service before determining a communication path for the V2X service. And the second communication path exists in parallel.
  • the method further includes:
  • the transceiver module sends identification information to the network device, where the identifier information is used to request to configure a D2D direct communication resource pool for the first communication path;
  • the processing module establishes a communication connection based on the second communication path.
  • the specific implementation manner of the foregoing terminal device determining the communication path and transmitting the V2X service message through the communication path can be referred to the description in the method embodiment.
  • the embodiment of the present invention is based on the same concept as the foregoing method embodiment, and the technical effects thereof are the same as those of the method embodiment of the present invention. For details, refer to the description in the method embodiment of the present invention, and details are not described herein again.
  • an embodiment of the present invention further provides a network device.
  • the network device can perform the method in the foregoing embodiment. Therefore, the specific details can be referred to the description in the foregoing embodiment. To save space, the same content will not be described again.
  • the network device may include a processing module and a transceiver module, and the processing module and the transceiver module are communicatively coupled.
  • the network device may further include a storage module or the like.
  • the transceiver module is configured to receive identification information from a terminal device, where the identifier information is used to request a communication path for the V2X service;
  • the processing module is configured to select one communication path from at least two communication paths, where the at least two communication paths include a first communication path and a second communication path, where the first communication path is a communication that communicates through a PC5 interface a path, the second communication path being a communication path for communicating through the Uu interface;
  • the transceiver module is configured to send indication information to the terminal device, where the indication information indicates that the one communication path is a communication path of the V2X service.
  • the specific implementation manner in which the foregoing network device selects a communication path in response to the identification information may refer to the description in the method embodiment.
  • the embodiment of the network device is based on the same concept as the foregoing method embodiment, and the technical effects thereof are the same as those of the method embodiment of the present invention.
  • the processing module in all the foregoing embodiments of the present invention may be implemented by at least one processor, where the processor may be a central processing unit (CPU), or other general-purpose processors, digital signals.
  • the sending module can be implemented by a transmitter or a transceiver.
  • the receiving module can be implemented by a receiver or a transceiver.
  • the access network device and the user equipment in the foregoing embodiments of the present invention may further include components such as a memory, where the memory may be packaged.
  • Read-only memory and random access memory are provided, and instructions and data are provided to the processor.
  • a portion of the memory may also include a non-volatile random access memory.
  • the memory can also store information of the device type.
  • the processor calls the instruction code of the memory to control the network device in the embodiment of the present invention and other modules in the user equipment to perform the foregoing operations.
  • system and “network” are used interchangeably herein. It should be understood that the term “and/or” herein is merely an association relationship describing an associated object, indicating that there may be three relationships, for example, A and/or B, which may indicate that A exists separately, and A and B exist simultaneously. There are three cases of B alone. In addition, the character "/" in this article generally indicates that the contextual object is an "or" relationship.
  • B corresponding to A means that B is associated with A, and B can be determined from A.
  • determining B from A does not mean that B is only determined based on A, and that B can also be determined based on A and/or other information.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, which may be electrical, mechanical. Or other forms.
  • the units described as separate components may or may not be physically separated as The components displayed by the unit may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • An integrated unit if implemented in the form of a software functional unit and sold or used as a standalone product, can be stored in a computer readable storage medium.
  • the technical solution of the present invention which is essential or contributes to the prior art, or a part of the technical solution, may be embodied in the form of a software product, which is stored in a storage medium, including
  • the instructions are used to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a disk or an optical disk, and the like.
  • the medium of the program code includes: a U disk, a mobile hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a disk or an optical disk, and the like.

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Abstract

本发明提供一种V2X业务的消息发送方法,该方法包括:终端设备为V2X业务确定一个通信路径,所述一个通信路径是从至少两个通信路径中选择的,所述至少两个通信路径包括第一通信路径和第二通信路径,所述第一通信路径为通过PC5接口进行通信的通信路径,所述第二通信路径为通过Uu接口进行通信的通信路径;所述终端设备通过所述一个通信路径发送所述V2X业务的消息。通过上述方案,能够从至少两个通信路径中选择一个通信路径来发送V2X业务的消息,实现了灵活地为V2X业务选择通信路径。

Description

消息发送方法和装置 技术领域
本发明涉及通信系统领域,特别涉及一种消息发送方法和装置。
背景技术
车辆到车辆(vehicle to vehicle,V2V)通信是一种在车辆与车辆之间通过无线通信技术进行数据传输和信息交互的通信技术。作为智能交通系统(Intelligent Transportation System,ITS)和车联网研究中的一项重要内容,V2V通信主要提供并支持与道路交通安全相关的应用和业务传输,被广泛认为是提高车辆安全行驶、减少交通事故的关键技术。
V2V通信所承载的V2V业务通过传输V2V消息实现,V2V消息主要包括一些与车辆行驶状态有关的信息,如车速、行驶方向、经纬度、加速度、是否刹车、以及是否变道等中的至少一种,和/或一些与周围道路环境相关的信息,如事故、道路施工、交通设施故障等中的至少一种。通过V2V通信,车辆可以与其周围的其他车辆进行V2V消息交互,使得车辆驾驶系统能够及时获取路况信息或接收与车辆行驶安全相关的信息服务,辅助车辆驾驶员或者车辆驾驶系统对危险进行预判并进行相应操作,尽可能避免事故发生。由于V2V通信事关车辆行驶安全的关键信息,需要及时准确地在车辆之间进行V2V消息交互,因而具有“高可靠,短时延”的通信需求。
第三代合作伙伴计划(3rd Generation Partnership Project,3GPP)着手进行的“基于LTE(Long Term Evolution,长期演进)的车辆到everything(vehicle to everything,V2X)通信”标准化工作涵盖了V2V,车辆到基础设施(vehicle to infrastructure,V2I)以及车辆到手持终端(vehicle to pedestrian,V2P)等车辆通信场景,该标准化工作旨在基于LTE通信系统提供与道路安全相关的车辆无线通信。基于LTE的V2V通信是该标准化工作中的重要组成部分,提供了设备到设备(device to device,D2D)直接通信和LTE基站中转通信两种通信技术。其中的D2D直接通信技术允许用户设备(user equipment,UE)间通过PC5接口直接进行通信,其传输时延相对较低,但由于配置的资源非常有限,容易导致V2V消息传输拥塞及数据碰撞。LTE基站中转通信技术通过Uu接口进行通信,可靠性较高,但是需要UE首先将数据发送到基站,再由基站将数据转发给 其他UE,传输时延相对较高及占用较多资源。由此可见,用户设备无论采用PC5接口还是Uu接口进行V2V通信,都有可能无法满足V2V业务的通信需求。
发明内容
本发明实施例提供一种V2X业务的消息发送方法和装置,能够灵活地执行V2X业务。
第一方面,提供了一种V2X业务的消息发送方法,包括:
终端设备为V2X业务确定一个通信路径,所述一个通信路径是从至少两个通信路径中选择的,所述至少两个通信路径包括第一通信路径和第二通信路径,所述第一通信路径为通过PC5接口进行通信的通信路径,所述第二通信路径为通过Uu接口进行通信的通信路径;
所述终端设备通过所述一个通信路径发送所述V2X业务的消息。
其中,终端设备能够为V2X业务确定一个通信路径,所述一个通信路径是从至少两个通信路径选择的,使得终端设备在发送V2X业务的消息时具备为V2X业务选择通信路径的灵活性。值得说明的是,本发明实施例对V2X业务不做具体限定,任何能够采用第一通信路径和第二通信路径进行通信的V2X业务均可以应用本发明实施例的技术方案,例如,V2X业务可以是V2V业务,V2P业务,或V2I业务,还可以是新的V2X业务。
可选的,所述终端设备为V2X业务确定一个通信路径,包括:
所述终端设备从所述网络设备接收指示信息,所述指示信息用于为所述V2X业务指示所述一个通信路径,所述指示信息指示的所述一个通信路径是所述网络设备从所述至少两个通信路径中选择的;
所述终端设备根据所述指示信息确定所述一个通信路径。
其中,由网络设备为终端设备的V2X业务选择通信路径,不需要终端设备自行选择通信路径,节约了终端设备的处理资源,并且网络设备为覆盖范围内的终端设备选择通信路径,可以使网络设备整体调度终端设备的通信路径。
可选的,在所述终端设备为V2X业务确定一个通信路径之前,所述方法还包括:
所述终端设备向网络设备发送第一标识信息,所述第一标识信息用于请求为所述V2X业务指示通信路径。可选的,所述终端设备在发送该标识信息后的 预定时间内,没有收到所述网络设备的所述指示信息,则停止执行所述V2X业务,或者所述终端设备从所述至少两个通信路径中选择所述一个通信路径。
可选的,在所述终端设备为V2X业务确定一个通信路径之前,所述方法还包括:
所述终端设备向网络设备发送通知消息。例如,所述通知消息包括所述V2X业务的信息或者所述终端设备的状态信息,在这种情况下,终端设备在为V2X业务确定一个通信路径前,将所述V2X业务的信息或者所述终端设备的状态信息上报给网络设备。
值得说明的是,本发明实施例中,终端设备发送给网络设备的通知消息可以包括各种相关信息,本发明实施例对此不做限制。
可选的,在所述终端设备为V2X业务确定一个通信路径之前,所述方法还包括:
所述终端设备向所述网络设备发送所述V2X业务的消息类别信息;和/或
所述终端设备向所述网络设备发送所述第一通信路径的无线环境测量信息和/或所述第二通信路径的无线环境测量信息。
可选的,所述终端设备通过无线资源控制RRC专用消息向所述网络设备发送所述第一通信路径的无线环境测量信息和/或所述第二通信路径的无线环境测量信息。
其中,终端设备将所述V2X业务的消息类别信息,或者所述第一通信路径的无线环境测量信息和/或所述第二通信路径的无线环境测量信息,发送给所述网络设备,可以使网络设备基于上述信息从至少两个通信路径中选择更适合的通信路径来发送所述V2X业务的消息,例如选择更可靠或更低时延的通信路径。
可选的,所述终端设备从所述网络设备接收指示信息,包括:
所述终端设备通过所述网络设备发送的RRC专用消息接收所述指示信息,例如,所述网络设备发送的RRC专用消息是连接重配置消息RRCConnectionReconfiguration。
可选的,所述指示信息指示的所述一个通信路径是所述第一通信路径;
在所述终端设备通过所述一个通信路径发送所述V2X业务的消息之前,所述方法还包括:
所述终端设备从所述网络设备接收D2D直接通信资源池的配置信息,所述D2D直接通信资源池是为所述第一通信路径配置的。
可选的,所述终端设备为V2X业务确定一个通信路径,包括:
所述终端设备从所述至少两个通信路径中选择所述一个通信路径。
可选的,所述终端设备从所述至少两个通信路径中选择所述一个通信路径,可以包括:所述终端设备基于所述V2X业务的消息类别信息从所述至少两个通信路径中选择所述一个通信路径;或
所述终端设备基于所述第一通信路径的无线环境测量信息和/或所述第二通信路径的无线环境测量信息从所述至少两个通信路径中选择所述一个通信路径。
其中,所述终端设备自行从所述至少两个通信路径中选择所述一个通信路径,不需要向网络设备发送请求消息,请求网络设备选择所述一个通信路径,可以节约网络资源,进一步地,可以使终端设备基于上述信息从至少两个通信路径中选择更适合的通信路径来发送所述V2X业务的消息,例如选择更可靠或更低时延的通信路径。
可选的,在所述终端设备为V2X业务确定一个通信路径之前,终端设备向网络设备发送第二标识信息,所述第二标识信息用于请求为所述第一通信路径配置D2D直接通信资源池;
在所述终端设备为V2X业务确定一个通信路径之前,所述方法还包括:
所述终端设备从所述网络设备接收所述D2D直接通信资源池的配置信息;
所述终端设备建立基于所述第二通信路径的通信连接。
其中,终端设备在为所述V2X业务确定一个通信路径之前,所述终端设备为所述V2X业务建立了所述第一通信路径和所述第二通信路径,也就是说所述第一通信路径和所述第二通信路径并行存在。这样,在所述终端设备为所述V2X业务确定一个通信路径后,如果确定的一个通信路径是已经建立的第一通信路径或第二通信路径,终端设备可以直接采用该确定的一个通信路径发送所述V2X业务的消息,减少了消息发送时延。
可选的,所述终端设备从所述网络设备接收D2D直接通信资源池的配置信息,包括:
所述终端设备通过RRC专用消息从所述网络设备接收所述配置信息。
可选的,所述D2D直接通信资源池包括专有资源池。
其中,所述专有资源池,与现有技术中的资源池类似,该专有资源池也是指一组用于无线通信的时间、频率资源的集合,但是该专有资源池是V2X业务所独有的资源池,即只有V2X业务可以使用,其他的业务不能使用。通过为所述V2X业务配置只有V2X业务可以使用的专有资源池,可以使终端设备及时为V2X业务获得资源。
可选的,所述终端设备向网络设备发送第一标识信息,包括:
所述终端设备通过RRC专用消息向所述网络设备发送所述第一标识信息。例如,向所述网络设备发送所述标识信息的所述RRC专用消息是D2D用户信息SidelinkUEInformation。
可选的,所述终端设备向网络设备发送第二标识信息,包括:
所述终端设备通过RRC专用消息向所述网络设备发送所述第二标识信息。例如,向所述网络设备发送所述标识信息的所述RRC专用消息是D2D用户信息SidelinkUEInformation。
可选的,在所述终端设备为V2X业务确定一个通信路径之后,所述方法还包括:
所述终端设备确定所述V2X业务当前使用的通信路径是与所述一个通信路径不同的通信路径;
所述终端设备停止使用所述当前使用的通信路径。
其中,终端设备所确定的通信路径与终端设备当前所使用的通信路径不同时,停止使用终端设备当前所使用的通信路径,而通过该确定的通信路径发送V2X业务的消息,可以使终端设备灵活地为所述V2X业务选择通信路径,并通过选择的通信路径来发送所述V2X业务的消息。
可选的,所述终端设备为V2X业务确定一个通信路径的触发条件,包括如下中的至少一个:
所述V2X业务初始化;
所述V2X业务的消息存在超时丢弃;
所述第二通信路径的负载高于第一阈值;
所述终端设备从无线通信系统的覆盖范围外进入到所述无线通信系统的覆盖范围内。
其中,终端设备可以在达到上述触发条件中的至少一个时执行为V2X业务确定通信路径的相应步骤,进而通过确定的通信路径发送所述V2X业务的消息。由于在达到上述触发条件时,往往是需要执行V2X业务或者通信环境发生了变化的情况,终端设备在达到上述触发条件时执行为V2X业务确定通信路径的相应步骤,能够使得终端设备灵活地为V2X业务选择通信路径,进一步地,还能够从至少两个通信路径中选择更适合的通信路径来发送所述V2X业务的消息,例如选择更可靠或更低时延的通信路径。
第二方面,提供了一种V2X业务处理方法,该方法各可选实施例所能获得的技术效果可以参见上文中的相应描述,且上文中相应的可选实施例也可以应用于所述第二方面以及第二方面的各可选实施例。该方法包括:
所述网络设备从至少两个通信路径中选择一个通信路径,所述至少两个通信路径包括第一通信路径和第二通信路径,所述第一通信路径为通过PC5接口进行通信的通信路径,所述第二通信路径为通过Uu接口进行通信的通信路径;
所述网络设备向所述终端设备发送指示信息,所述指示信息指示所述一个通信路径为所述V2X业务的通信路径。
其中,网络设备为终端设备执行的V2X业务选择通信路径,不需要终端设备自行选择通信路径,节约了终端设备的处理资源,并且网络设备对覆盖范围内的终端设备选择通信路径,可以使网络设备整体调度终端设备的通信路径。
可选的,在所述网络设备从至少两个通信路径中选择一个通信路径之前,所述方法还包括:
网络设备从终端设备接收标识信息,所述标识信息用于请求为所述V2X业务指示通信路径。
可选的,在所述网络设备从至少两个通信路径中选择一个通信路径之前,所述方法还包括:
所述网络设备从所述终端设备接收所述V2X业务的消息类别信息;
所述网络设备从至少两个通信路径中选择一个通信路径,包括:
所述网络设备基于所述V2X业务的消息类别信息从所述至少两个通信路径 中选择一个通信路径。
可选的,在所述网络设备从至少两个通信路径中选择一个通信路径之前,所述方法还包括:
所述网络设备从所述终端设备接收所述第一通信路径的无线环境测量信息和/或所述第二通信路径的无线环境测量信息;
所述网络设备从至少两个通信路径中选择一个通信路径,包括:
所述网络设备基于所述第一通信路径的无线环境测量信息和/或所述第二通信路径的无线环境测量信息从所述至少两个通信路径中选择一个通信路径。
其中,网络设备基于上述信息从至少两个通信路径中选择更适合的通信路径来发送所述V2X业务的消息,例如选择更可靠或更低时延的通信路径。
可选的,所述一个通信路径是第一通信路径;
所述网络设备向所述终端设备发送指示信息中,或,所述网络设备向所述终端设备发送指示信息后,所述方法还包括:
所述网络设备向所述终端设备发送D2D直接通信资源池的配置信息,所述D2D直接通信资源池是为所述第一通信路径配置的。
可选的,所述D2D直接通信资源池包括专有资源池。
可选的,所述网络设备从终端设备接收标识信息,包括:
所述网络设备通过所述终端设备发送的无线资源控制RRC专用消息接收所述标识信息。
可选的,所述网络设备向所述终端设备发送指示信息,包括:
所述网络设备通过RRC专用消息向所述终端设备发送指示信息。
可选的,所述网络设备向所述终端设备发送D2D直接通信资源池的配置信息,包括:
所述网络设备通过RRC专用消息向所述终端设备发送D2D直接通信资源池的配置信息,例如,向所述终端设备发送所述配置信息的RRC专用消息是RRC连接重配消息RRCConnectionReconfiguration。
第三方面,提供了一种终端设备,其特征在于,包括:,
处理模块,用于为V2X业务确定一个通信路径,所述一个通信路径是从至少两个通信路径中选择的,所述至少两个通信路径包括第一通信路径和第二通信路径,所述第一通信路径为通过PC5接口进行通信的通信路径,所述第二通信路径为通过Uu接口进行通信的通信路径;
处理模块,用于通过所述一个通信路径发送所述V2X业务的消息。
可选的,所述收发模块用于,从所述网络设备接收指示信息,所述指示信息用于为所述V2X业务指示所述一个通信路径,所述指示信息指示的所述一个通信路径是所述网络设备从所述至少两个通信路径中选择的;
所述处理模块用于根据所述指示信息确定所述一个通信路径。
可选的,所述收发模块还用于,从所述网络设备接收指示信息之前,向网络设备发送第一标识信息,所述第一标识信息用于请求为所述V2X业务指示通信路径。
可选的,所述收发模块还用于,从所述网络设备接收指示信息之前,向所述网络设备发送所述V2X业务的消息类别信息;和/或
所述收发模块还用于,从所述网络设备接收指示信息之前,向所述网络设备发送所述第一通信路径的无线环境测量信息和/或所述第二通信路径的无线环境测量信息。
可选的,所述收发模块通过无线资源控制RRC专用消息向所述网络设备发送所述第一通信路径的无线环境测量信息和/或所述第二通信路径的无线环境测量信息。
可选的,所述收发模块从所述网络设备接收指示信息,包括:
所述收发模块通过所述网络设备发送的RRC专用消息接收所述指示信息,例如,所述网络设备发送的RRC专用消息是连接重配置消息RRCConnectionReconfiguration。
可选的,所述指示信息指示的通信路径是所述第一通信路径;
所述收发模块还用于,在通过所述一个通信路径发送所述V2X业务的消息之前,从所述网络设备接收D2D直接通信资源池的配置信息,所述D2D直接通信资源池是为所述第一通信路径配置的。
可选的,所述处理模块为V2X业务确定一个通信路径,包括:
所述处理模块从所述至少两个通信路径中选择所述一个通信路径。
可选的,所述处理模块从所述至少两个通信路径中选择所述一个通信路径,可以包括:
所述处理模块基于所述V2X业务的消息类别信息从所述至少两个通信路径中选择所述一个通信路径;或
所述处理模块基于所述第一通信路径的无线环境测量信息和/或所述第二通信路径的无线环境测量信息从所述至少两个通信路径中选择所述一个通信路径。
可选的,所述收发模块还用于,在所述处理模块为V2X业务确定一个通信路径之前,向网络设备发送第二标识信息,所述第二标识信息用于请求为所述第一通信路径配置D2D直接通信资源池;
所述收发模块还用于,在所述处理模块为V2X业务确定一个通信路径之前,从所述网络设备接收所述D2D直接通信资源池的配置信息;
所述处理模块还用于,在为V2X业务确定一个通信路径之前,建立基于所述第二通信路径的通信连接。
可选的,所述收发模块从所述网络设备接收D2D直接通信资源池的配置信息,包括:
所述收发模块通过所述网络设备发送的RRC专用消息接收所述配置信息。
可选的,所述D2D直接通信资源池包括专有资源池。
可选的,所述收发模块向网络设备发送第一标识信息,包括:
所述终端设备通过RRC专用消息向所述网络设备发送所述第一标识信息,例如,向所述网络设备发送所述标识信息的所述RRC专用消息是D2D用户信息SidelinkUEInformation。
可选的,所述发送模块向网络设备发送第二标识信息,包括:
所述发送模块通过RRC专用消息向所述网络设备发送所述第二标识信息,例如,向所述网络设备发送所述标识信息的所述RRC专用消息是D2D用户信息SidelinkUEInformation。
可选的,所述处理模块还用于,在为V2X业务确定一个通信路径之后,确定所述V2X业务当前使用的通信路径是与所述一个通信路径不同的通信路径;
所述处理模块停止使用所述当前使用的通信路径。
可选的,所述处理模块为V2X业务确定一个通信路径的触发条件,包括如 下中的至少一个:
所述V2X业务初始化;
所述V2X业务的消息存在超时丢弃;
所述第二通信路径的负载高于第一阈值;
所述终端设备从无线通信系统的覆盖范围外进入到所述无线通信系统的覆盖范围内。
第四方面,提供了一种网络设备,其特征在于,包括:
处理模块,用于从至少两个通信路径中选择一个通信路径,所述至少两个通信路径包括第一通信路径和第二通信路径,所述第一通信路径为通过PC5接口进行通信的通信路径,所述第二通信路径为通过Uu接口进行通信的通信路径;
收发模块,用于向所述终端设备发送指示信息,所述指示信息指示所述一个通信路径为所述V2X业务的通信路径。
可选的,所述收发模块还用于,在所述处理模块从至少通信路径中选择一个通信路径之前,从终端设备接收标识信息,所述标识信息用于请求为所述V2X业务指示通信路径;
可选的,所述收发模块还用于,在所述处理模块从至少两个通信路径中选择一个通信路径之前,从所述终端设备接收所述V2X业务的消息类别信息;
所述处理模块从至少两个通信路径中选择一个通信路径,包括:
所述处理模块基于所述V2X业务的消息类别信息从所述至少两个通信路径中选择一个通信路径。
可选的,所述收发模块还用于,在所述处理模块从至少两个通信路径中选择一个通信路径之前,从所述终端设备接收所述第一通信路径的无线环境测量信息和/或所述第二通信路径的无线环境测量信息;
所述处理模块从至少两个通信路径中选择一个通信路径,包括:
所述处理模块基于所述第一通信路径的无线环境测量信息和/或所述第二通信路径的无线环境测量信息从所述至少两个通信路径中选择一个通信路径。
可选的,所述一个通信路径是第一通信路径;
所述收发模块还用于,向所述终端设备发送指示信息中,或,向所述终端设备发送指示信息后,向所述终端设备发送D2D直接通信资源池的配置信息, 所述D2D直接通信资源池是为所述第一通信路径配置的。
可选的,所述D2D直接通信资源池包括专有资源池。
可选的,所述收发模块从终端设备接收标识信息,包括:
所述收发模块通过所述终端设备发送的无线资源控制RRC专用消息接收所述标识信息。
可选的,所述收发模块向所述终端设备发送指示信息,包括:
所述收发模块通过RRC专用消息向所述终端设备发送指示信息。
可选的,所述收发模块向所述终端设备发送D2D直接通信资源池的配置信息,包括:
所述收发模块通过RRC专用消息向所述终端设备发送D2D直接通信资源池的配置信息,例如,向所述终端设备发送所述配置信息的RRC专用消息是RRC连接重配消息RRCConnectionReconfiguration。
本发明实施例中,为V2X业务确定的一个通信路径是从至少两个通信路径中选择的,所述至少两个通信路径包括第一通信路径和第二通信路径,所述第一通信路径为通过PC5接口进行通信的通信路径,所述第二通信路径为通过Uu接口进行通信的通信路径,从而能够灵活地为V2X业务确定通信路径。
附图说明
图1为本发明实施例的通信场景图;
图2为本发明实施例提供的V2X业务的消息发送方法的流程示意图;
图3为本发明实施例提供的第一种示例示意图;
图4为本发明实施例提供的第二种示例示意图;
图5为本发明实施例提供的第三种示例示意图;
图6为本发明实施例提供的终端设备结构示意图;
图7为本发明实施例提供的网络设备结构示意图。
具体实施方式
为了使本领域的技术人员更好地理解本发明实施例的方案,下面结合附图和实施方式对本发明实施例作进一步说明。
下面首先对V2V通信技术中D2D直接通信技术和LTE基站中转通信技术的通信过程做简单说明。
D2D直接通信技术:
D2D直接通信技术中,在基站的控制下,用户设备能够采用广播的形式直接与其他用户设备进行通信。用户设备间直接进行通信的空中接口称为PC5接口,对应的无线链路称为D2D链路(Sidelink,SL)。在通过PC5接口进行通信的通信路径中,UE配置PC5接口对应的无线协议栈并通过该协议栈处理数据,在获取D2D直接通信资源后通过PC5接口传输处理后的数据。
为了防止D2D直接通信对LTE系统的已有通信产生干扰,LTE系统将配置一部分专门用于D2D直接通信的资源池(Resource Pool)。所谓资源池是指一组用于无线通信的时间、频率资源的集合。D2D直接通信数据,仅能使用LTE系统配置的D2D直接通信资源池中的D2D直接通信资源在PC5接口进行传输。
值得注意的是,现有D2D直接通信技术中,UE具有两种获取D2D直接通信资源的方式,分别是基于UE自主选择的方式以及基于基站调度的方式。基于UE自主选择的方式指UE从基站配置的D2D直接通信资源池中自主选择资源,基于基站调度的方式指基站从D2D直接通信资源池中为UE选择资源。虽然D2D直接通信技术具有时延低且占用资源较少等优点,但是在D2D直接通信资源有限和/或业务量较大的情况下,由于D2D直接通信资源池负载较高,UE自主资源选择的方式将使得UE传输的数据频繁碰撞,造成UE间数据传输的严重干扰,显著影响通信性能。而对于基于基站调度的方式,UE的传输数据会因为难以及时获得足够的传输资源,从而造成数据传输拥塞,迫使UE丢弃无法及时传输的数据包,严重影响用户服务环境。
LTE基站中转通信技术:
LTE基站中转通信技术中,UE首先将V2V消息发送给基站,再由基站将该V2V消息发送给其他UE进行接收,其中UE与基站进行上行传输或下行传输的空中接口称为Uu接口。在通过Uu接口进行通信的通信路径中,UE采用上行(Uplink,UL)单播的方式将V2V消息发送给基站,基站采用下行(Downlink,DL)广播的方式将该V2V消息发送给其他UE。具体的,UE配置Uu接口的无线承载部分,通过Uu接口对应的无线协议栈处理数据,并通过MME(mobility management entity,移动性管理实体)配置基站-服务网关(serving gateway,S-GW)/PDN网关(PDN gateway,P-GW)-V2V服务器的核心网承载部分,采用LTE系统的上行资源通过Uu接口传输处理后的数据。
LTE基站中转通信技术采用基站集中资源调度方式,基站为各个UE调度相 互正交的无线资源,有效解决了UE间通信的干扰问题,是一种可靠性较高的传输方式。但是,LTE基站中转通信技术需要发送端UE首先使用上行资源将数据发送给基站,再由基站利用下行资源将数据转发给接收端UE,才能实现UE间的通信和信息交互,与允许UE间直接进行通信的D2D直接通信技术相比,LTE基站中转通信技术的资源利用率相对较低,而且时延相对较高。
通过上述对现有的V2V通信技术的介绍和优缺点分析,本发明实施例提供了一种V2X业务的消息发送方法和装置,能够灵活地发送V2X业务的消息。
图1所示为本发明实施例的通信场景图,需要说明的是,该通信场景图只是示意说明,本发明的应用范围不限于此。以V2X业务中的V2V业务为例,如图1所示,该通信场景图中包括车辆用户设备V-UE1至V-UE6以及基站e-NodeB,当然,该通信场景图中还可以包括例如MME,S-GW/P-GW,V2V服务器等核心网承载部分,本发明实施例并不以此为限。在该通信场景图中,车辆用户设备V-UE之间可以进行V2V通信,例如车辆用户设备V-UE1可以通过LTE基站中转通信技术与其他车辆用户设备进行V2V通信,V-UE1通过Uu接口,采用UL单播的方式将V2V消息上传给基站,基站采用DL广播的方式将该V2V消息广播给其他车辆用户设备。例如车辆用户设备V-UE4可以通过D2D直接通信技术与其他车辆用户设备进行V2V通信,V-UE4通过PC5接口,采用D2D链路SL将V2V消息广播给其他车辆用户设备。
需要说明的是,虽然在前述部分中以V2V业务为例对V2X业务进行了介绍,但本领域技术人员应当知晓,本发明实施例不仅仅适用于V2V业务,也可以适用于其他V2X业务,例如V2I,V2P,以及新的V2X业务。
本发明实施例涉及的终端设备,可以是指向用户提供语音和/或数据连通性的设备,具有无线连接功能的手持式设备、或连接到无线调制解调器的其他处理设备。无线终端可以经无线接入网(Radio Access Network,RAN)与一个或多个核心网进行通信,无线终端可以是移动终端,如移动电话(或称为“蜂窝”电话)和具有移动终端的计算机,例如,可以是便携式、袖珍式、手持式、计算机内置的或者车载的移动装置(例如车辆用户设备V-UE),它们与无线接入网交换语言和/或数据。例如,个人V2X业务(PCS,Personal Communication Service)电话、无绳电话、会话发起协议(SIP)话机、无线本地环路(WLL,Wireless Local Loop)站、个人数字助理(PDA,Personal Digital Assistant)等设备。无线终端也可以称为系统、订户单元(Subscriber Unit)、订户站(Subscriber  Station),移动站(Mobile Station)、移动台(Mobile)、远程站(Remote Station)、接入点(Access Point)、远程终端(Remote Terminal)、接入终端(Access Terminal)、用户终端(User Terminal)、用户代理(User Agent)、用户设备(User Device)、或用户装备(User Equipment)。
本发明实施例所涉及的网络设备,可以是基站,或者接入点,或者可以是指接入网中在空中接口上通过一个或多个扇区与无线终端通信的设备。基站可用于将收到的空中帧与IP分组进行相互转换,作为无线终端与接入网的其余部分之间的路由器,其中接入网的其余部分可包括网际协议(IP)网络。基站还可协调对空中接口的属性管理。例如,基站可以是GSM或CDMA中的基站(BTS,Base Transceiver Station),也可以是WCDMA中的基站(NodeB),还可以是LTE中的演进型基站(eNB或e-NodeB,evolutional Node B),本申请并不限定。
下面结合具体实施例说明本发明实施例如何实现灵活地执行V2X业务。
图2所示为本发明实施例提供的V2X业务的消息发送方法的流程图。如图2所示,该方法包括:
步骤201,终端设备为V2X业务确定一个通信路径,所述一个通信路径是从至少两个通信路径中选择的,所述至少两个通信路径包括第一通信路径和第二通信路径,所述第一通信路径为通过PC5接口进行通信的通信路径,所述第二通信路径为通过Uu接口进行通信的通信路径;
步骤202,所述终端设备通过所述一个通信路径发送所述V2X业务的消息。
本发明实施例中,终端设备通过确定的一个通信路径发送V2X业务的消息,而该确定的一个通信路径是从至少两个通信路径中选择的,因此实现了灵活地为V2X业务选择通信路径。
例如,一实施例中,终端设备为V2X业务确定的一个通信路径是第一通信路径,即通过PC5接口进行通信的通信路径,因此终端设备通过该第一通信路径发送V2X业务的消息。在这种情况下,终端设备配置PC5接口对应的无线协议栈并通过该协议栈处理数据,并获取D2D直接通信资源传输处理后的数据。可选的,终端设备基于自主选择的方式从D2D直接通信的资源池获取D2D直接通信资源,或者,终端设备基于基站调度的方式从D2D直接通信的资源池获取D2D直接通信资源。
可选的,终端设备获取D2D直接通信资源的资源池包括专有资源池。现有 技术中终端设备在进行D2D直接通信时所使用的D2D直接通信资源来自于LTE系统配置的一部分专门用于D2D直接通信的资源池,该资源池事实上是共享的资源池,该资源池是多种V2X业务以及其他的多种D2D通信业务均可以使用的。当终端设备基于自主选择的方式从该资源池获取D2D直接通信资源时,由于该资源池负载较高,将使得终端设备传输的数据频繁碰撞,造成终端设备间数据传输的严重干扰,而当终端设备基于基站调度的方式从该资源池获取D2D直接通信资源时,也不能保证终端设备能够及时获得足够的传输资源。因此,本发明实施例中,可以为V2X业务配置专有资源池,与现有技术中的资源池类似,该专有资源池也是指一组用于无线通信的时间、频率资源的集合,但是该专有资源池是V2X业务所独有的资源池,即专用于V2X业务,其他的D2D业务不能使用。从而当该终端设备通过该第一通信路径发送V2X业务的消息时,可以基于自主选择的方式从该专有资源池获取D2D直接通信资源,也可以基于基站调度的方式从该专有资源池获取D2D直接通信资源。当然,终端设备也可以从共享的资源池和该专有资源池获取D2D直接通信资源,例如优先从该专有资源池中获取D2D直接通信资源,或者同时从共享的资源池和该专有资源池获取D2D直接通信资源。
可选的,当终端设备基于基站调度的方式从共享的资源池和/或该专有资源池获取D2D直接通信资源时,可以从网络设备接收配置该共享的资源池和/或该专有资源池的配置信息,例如,所述终端设备通过所述网络设备发送的无线资源控制RRC连接重配消息RRCConnectionReconfiguration接收所述配置信息,也可以通过其他RRC专用消息接收所述配置信息。
又一实施例中,终端设备为V2X业务确定的一个通信路径是第二通信路径,即通过Uu接口进行通信的通信路径,因此终端设备通过该第二通信路径发送V2X业务的消息。在这种情况下,终端设备配置Uu接口对应的无线协议栈并通过该协议栈处理数据,并建立终端设备与基站的端到端连接以及配置专用承载,通过该专用承载传输处理后的数据。
本发明实施例中,可选的,在上述步骤201之后,本发明实施例还可以包括:所述终端设备确定所述V2X业务当前使用的通信路径是与所述一个通信路径不同的通信路径;所述终端设备停止使用所述当前使用的通信路径。即终端设备所确定的通信路径与终端设备当前所使用的通信路径不同时,停止使用终端设备当前所使用的通信路径,而通过该确定的通信路径发送V2X业务的消息。
本发明实施例中,可选的,上述步骤201的触发条件包括如下中的至少一个:
所述V2X业务初始化;
所述V2X业务的消息存在超时丢弃;
所述第二通信路径的负载高于第一阈值;
所述终端设备从无线通信系统的覆盖范围外进入到所述无线通信系统的覆盖范围内。
本发明实施例中终端设备可以在达到上述触发条件中的至少一个时执行为V2X业务确定通信路径的相应步骤,进而通过确定的通信路径发送所述V2X业务的消息。由于在达到上述触发条件时,往往是需要执行V2X业务或者通信环境发生了变化的情况,终端设备在达到上述触发条件时执行为V2X业务确定通信路径的相应步骤,能够使得终端设备灵活地为V2X业务选择通信路径,进一步地,还能够从至少两个通信路径中选择更适合的通信路径来发送所述V2X业务的消息,例如选择更可靠或更低时延的通信路径,关于如何选择出更适合的通信路径,将在下文中描述。
可选的,在上述步骤201之前,本发明实施例还包括:
所述终端设备向网络设备发送标识信息,所述标识信息用于请求为所述V2X业务指示通信路径。也就是说,终端设备请求网络设备为所述V2X业务选择一个通信路径,可选的,所述终端设备在发送该标识信息后的预定时间内,没有收到所述网络设备发送的指示所述V2X业务的通信路径的指示信息,则停止执行所述V2X业务,或者所述终端设备自行从所述至少两个通信路径中选择所述一个通信路径。
可选的,在上述步骤201之前,本发明实施例还包括:
所述终端设备向网络设备发送通知消息。例如,所述通知消息包括所述V2X业务的信息或者所述终端设备的状态信息,在这种情况下,终端设备在为V2X业务确定一个通信路径前,将所述V2X业务的信息或者所述终端设备的状态信息上报给网络设备。
值得说明的是,本发明实施例中,终端设备发送给网络设备的通知消息可以包括各种相关信息,本发明实施例对此不做限制。
本发明实施例中,可选的,所述一个通信路径是从至少两个通信路径中选 择的,可以是网络设备从至少两个通信路径中选择的。图3所示为本发明实施例提供的V2X业务的消息发送方法的流程图,在图3中以V2V业务为例进行介绍。如图3所示,该方法包括:
步骤301,所述网络设备从至少两个通信路径中选择一个通信路径,所述至少两个通信路径包括第一通信路径和第二通信路径,所述第一通信路径为通过PC5接口进行通信的通信路径,所述第二通信路径为通过Uu接口进行通信的通信路径。
可选的,所述网络设备可以通过随机的方式从所述至少两个通信路径中选择一个通信路径。
可选的,所述网络设备根据所述V2X业务的消息类别信息从所述至少两个通信路径中选择一个通信路径。在这种情况中,在所述网络设备从至少两个通信路径中选择一个通信路径之前,所述网络设备从所述终端设备接收所述V2X业务的消息类别信息,例如通过一条独立的RRC专用消息接收所述消息类别信息,或者通过上述标识信息所在的RRCSidelinkUEInformation接收所述消息类别信息,本发明实施例对此不做限制。V2X业务的消息类别信息,例如,可以是协作感知消息(Cooperative Awareness Message,CAM),分布式环境通知消息(Decentralized Environmental Notification Message,DENM),基础安全类消息(Basic Safety Message,BSM),以及车载互联网数据(Telematics)等常见车联网业务消息类别,本发明实施例对此不做限制。
所述网络设备在接收所述V2X业务的消息类别信息后,根据所述消息类别信息选择与所述消息类别信息对应的一个通信路径。根据所述V2X业务的消息类别信息选择一个通信路径,能够根据V2X业务的特点和需求灵活地为V2X业务选择更适合的通信路径,例如,对于低时延需求的V2X业务可以选择第一通信路径,对于高可靠需求的V2X业务可以选择第二通信路径,本发明实施例对此不做限制。
可选的,所述网络设备根据所述第一通信路径的无线环境测量信息和/或所述第二通信路径的无线环境测量信息从所述至少两个通信路径中选择一个通信路径。在这种情况中,在所述网络设备从至少两个通信路径中选择一个通信路径之前,所述网络设备从所述终端设备接收所述第一通信路径的无线环境测量信息和/或所述第二通信路径的无线环境测量信息,例如,通过上述标识信息所 在的RRCSidelinkUEInformation接收所述第一通信路径的无线环境测量信息和/或所述第二通信路径的无线环境测量信息,或者,通过RRC专用消息MeasurementReport接收所述第一通信路径的无线环境测量信息和/或所述第二通信路径的无线环境测量信息,或者,通过其他独立的RRC专用消息从终端设备接收所述第一通信路径的无线环境测量信息和/或所述第二通信路径的无线环境测量信息,本发明实施例对此不做限制。
可选的,终端设备向网络设备发送的通信路径的无线环境测量信息可以是从适当的存储位置读取获得,也可以通过测量获得。所述网络设备在接收所述第一通信路径的无线环境测量信息和/或所述第二通信路径的无线环境测量信息后,根据所述第一通信路径的无线环境测量信息和/或所述第二通信路径的无线环境测量信息选择一个通信路径,例如,第一通信路径的无线环境测量信息可以是PC5接口的资源池负载信息,第二通信路径的无线环境测量信息可以是Uu接口的蜂窝链路质量,当PC5接口的资源池负载低于第一阈值,和/或Uu接口的蜂窝链路质量较差时,所述网络设备选择所述第一通信路径;或者,当PC5接口的资源负载高于第一阈值,和/或Uu接口的蜂窝链路质量较好时,所述网络设备选择所述第二通信路径。关于PC5接口的资源池负载,例如,可以通过接收接入网设备广播的系统信息获取PC5接口的D2D直接通信资源池的时频位置,在D2D直接通信资源池所包含的资源上检测无线信号强度是否达到一阈值来判断该资源是否被占用,进而根据该资源池中的资源被占用比例确定该资源池负载。值得说明的是,本发明实施例对各个通信路径的无线环境测量信息的具体形式不做限定,各个通信路径的无线环境测量信息只需要反映通信路径的状态即可。根据所述第一通信路径的无线环境测量信息和/或所述第二通信路径的无线环境测量信息选择一个通信路径,能够根据各个通信路径的无线环境测量信息获知各个通信路径的状态,进而为所述V2X业务选择更适合的通信路径,例如,为所述V2X业务选择更低时延和/或更高可靠性的通信路径。
步骤302,所述网络设备向所述终端设备发送指示信息,所述指示信息指示所述一个通信路径为所述V2X业务的通信路径。
所述网络设备将为所述V2X业务选择的一个通信路径通过指示信息发送给用户设备,例如通过连接重配置消息RRCConnectionReconfiguration发送所述指示信息,或者通过其他独立的RRC专用消息发送所述指示信息,本发明实施例对此不做限制。
步骤303,所述终端设备从所述网络设备接收指示信息,所述指示信息用于为所述V2X业务指示通信路径。
步骤304,所述终端设备将所述指示信息指示的通信路径确定为所述一个通信路径。
步骤305,所述终端设备通过所述一个通信路径发送所述V2X业务的消息。
例如,所述终端设备为V2X业务确定的一个通信路径是第一通信路径,步骤305中可以包括从基站获取资源池的配置信息,配置PC5接口对应的协议栈,并通过该协议栈处理数据以及发送处理后的数据。例如,所述终端设备为V2X业务确定的一个通信路径是第二通信路径,步骤305中可以包括基于Uu接口建立端到端连接及配置专用承载,配置Uu接口对应的协议栈,并通过该协议栈处理数据以及发送处理后的数据。
可选的,本发明实施例中,终端设备为V2X业务确定一个通信路径后,通过所述一个通信路径发送V2X业务的消息的实施方式可以参照上述实施例中的描述,此处不再赘述。
可选的,在所述步骤301前,还包括:
步骤300,所述终端设备向网络设备发送标识信息,所述标识信息用于请求为所述V2X业务指示通信路径。
所述网络设备在接收到用于请求为所述V2X业务选择通信路径的标识信息后,响应于该标识信息,从所述至少两个通信路径中选择一个通信路径作为所述V2X业务的通信路径。
终端设备为V2X业务确定一个通信路径时,可以发送标识信息请求网络设备为所述V2X业务选择通信路径,可选的,所述标识信息可以是一条独立的RRC专用消息,或者,可以作为一个字段添加到用于D2D直接通信的RRCSidelinkUEInformation中。所述网络设备响应于所述标识信息执行步骤301,为所述V2X业务选择通信路径。当然,网络设备也可以在任意时间自行为所述V2X业务选择通信路径,并将选择的结果通过指示信息发送给终端设备。
通过上述方式,终端设备将网络设备选择的通信路径确定为所述V2X业务的通信路径,不需要终端设备自行为V2X业务选择通信路径,从而节约了终端设备的处理资源,并且网络设备为覆盖范围中的终端设备选择通信路径,可以 使网络设备整体调度终端设备的通信路径。
本发明实施例中,可选的,所述一个通信路径是从至少两个通信路径中选择的,可以是终端设备从至少两个通信路径中选择的。图4所示为本发明实施例提供的V2X业务的消息发送方法的流程图。如图4所示,该方法包括:
步骤401,终端设备为V2X业务确定一个通信路径,所述一个通信路径是所述终端设备从至少两个通信路径中选择的,所述至少两个通信路径包括第一通信路径和第二通信路径,所述第一通信路径为通过PC5接口进行通信的通信路径,所述第二通信路径为通过Uu接口进行通信的通信路径;
步骤402,所述终端设备通过所述一个通信路径发送所述V2X业务的消息。
例如,所述终端设备为V2X业务确定的一个通信路径是第一通信路径,步骤402中可以包括从基站获取资源池的配置信息,配置PC5接口对应的协议栈,并通过该协议栈处理数据以及发送处理后的数据。例如,所述终端设备为V2X业务确定的一个通信路径是第二通信路径,步骤402中可以包括基于Uu接口建立端到端连接及配置专用承载,配置Uu接口对应的协议栈,并通过该协议栈处理数据以及发送处理后的数据。
可选的,本发明实施例中,终端设备为V2X业务确定一个通信路径后,通过所述一个通信路径发送V2X业务的消息的实施方式可以参照上述实施例中的描述,此处不再赘述。
通过上述方式,终端设备从至少两个通信路径中选择一个通信路径发送所述V2X业务的消息,能够更灵活更高效地为V2X业务确定通信路径。
可选的,如图5所示,所述终端设备在步骤401之前,还可以包括:
步骤4001,所述终端设备向网络设备发送标识信息,所述标识信息用于请求为所述第一通信路径配置D2D直接通信资源池;
终端设备为V2X业务确定一个通信路径之前,可以发送标识信息请求网络设备为所述第一通信路径配置D2D直接通信资源池,可选的,所述标识信息可以是一条独立的RRC专用消息,或者,可以作为一个字段添加到用于D2D直接通信的RRCSidelinkUEInformation中。
步骤4002,所述终端设备从所述网络设备接收所述D2D直接通信资源池的配置信息;
网络设备接收到所述标识信息后,响应于该标识信息为所述第一通信路径配置D2D直接通信资源池,并将配置信息发送给终端设备。可选的,所述网络设备通过RRC连接重配消息RRCConnectionReconfiguration发送所述配置信息,也可以通过其他RRC专用消息发送所述配置信息。
步骤4003,所述终端设备建立基于所述第二通信路径的通信连接并配置专用承载。
其中,在执行步骤4001-4003后,所述终端设备为所述V2X业务建立了所述第一通信路径和所述第二通信路径,也就是说所述第一通信路径和所述第二通信路径并行存在。
需要说明的是,步骤4003终端设备建立基于所述第二通信路径的通信连接并配置专用承载,与步骤4001发送用于请求为所述第一通信路径配置D2D直接通信资源的标识信息之间,并没有严格的时序关系,例如,终端设备可以先执行步骤4001,再执行步骤4003,或者先执行步骤4003,再执行步骤4001,也可以同时执行步骤4001和4003。
然后,终端设备执行上述实施例中的步骤401和步骤402,也就是说,所述终端设备为所述V2X业务建立所述第一通信路径和所述第二通信路径之后,所述终端设备为V2X业务确定一个通信路径。可选的,选择一个通信路径的实施方式可以参照上述实施例中的描述,此处不再赘述。
值得说明的是,由于所述终端设备已经为所述V2X业务建立所述第一通信路径和所述第二通信路径,所以在所述终端设备为V2X业务确定的所述一个通信路径是第一通信路径或第二通信路径后,可以直接通过确定的第一通信路径或第二通信路径发送所述V2X业务的消息。
可选的,所述终端设备可以将所述确定并用来发送所述V2X业务的消息的通信路径切换为第一通信路径或第二通信路径中,与所述确定并用来发送所述V2X业务的消息的通信路径不同的通信路径。例如,终端设备建立了所述第一通信路径和所述第二通信路径,所述终端设备为所述V2X业务确定的通信路径是所述第一通信路径,因此终端设备通过所述第一通信路径发送所述V2X业务的消息,然后,终端设备可以将执行所述V2X业务的所述第一通信路径切换为所述第二通信路径,即通过所述第二通信路径来发送所述V2X业务的消息,并停止使用所述第一通信路径。可选的,终端设备可以在预定的时间段后进行上 述切换的步骤,或者,终端设备可以定时切换第一通信路径和第二通信路径来发送所述V2X业务的消息,或者,终端设备检测到所述第一通信路径或第二通信路径中与所述确定并用来发送所述V2X业务的消息的通信路径不同的另一个通信路径更适合执行所述V2X业务。关于如何确定更适合的通信路径可以参照上述实施例中的描述,此处不再赘述。
通过上述方式,终端设备在为V2X业务确定一个通信路径之前,所述终端设备为所述V2X业务建立所述第一通信路径和所述第二通信路径,进而当所述终端设备为所述V2X业务确定的通信路径是所述第一通信路径或所述第二通信路径,可以直接使用所述确定的通信路径发送所述V2X业务的消息,其有益效果是在确定执行V2X业务的通信路径后可以更快地执行所述V2X业务。
在一个可选的实施例中,终端设备确定发生无线链路失败(Radio Link Failure,RLF),所述终端设备将V2X业务当前使用的第二通信路径切换为其他通信路径。其中,所述第一通信路径为通过PC5接口进行通信的通信路径,所述第二通信路径为通过Uu接口进行通信的通信路径。例如,所述终端设备将所述V2X业务当前使用的第二通信路径切换为第一通信路径。
在所述终端设备将所述V2X业务当前使用的第二通信路径切换为第一通信路径后,所述终端设备通过所述第一通信路径发送所述V2X业务的消息,例如,终端设备事先建立所述第一通信路径,或者,终端设备可以基于UE自主选择的方式或者基于基站调度的方式获取D2D直接通信资源进而通过所述第一通信路径发送所述V2X业务的消息,可选的,终端设备可以从异常资源池中获取所述D2D直接通信资源,所述异常资源池是指一组用于无线通信的时间、频率资源的集合。关于通过所述第一通信路径发送所述V2X业务的消息的实施方式,可以参照上述实施例中的描述,此处不再赘述。
通过上述方式,终端设备在通过第二通信路径发送V2X业务的消息时,所述终端设备确定发生RLF后能够切换通信路径,通过其他通信路径发送所述V2X业务的消息,实现发生RLF情况下的有效传输。
为了实现上述实施例,本发明实施例还提供了一种终端设备。需要说明的是,该终端设备能够执行上述实施例中的方法,因此,其具体细节可以参照上述实施例中的描述,为了节约篇幅,后文相同的内容不再赘述。
如图6所示,所述终端设备可以包括处理模块和收发模块,所述处理模块 和收发模块通信连接。当然,所述终端设备还可以包括存储模块等。
所述处理模块用于为V2X业务确定一个通信路径,所述一个通信路径是从至少两个通信路径中选择的,所述至少两个通信路径包括第一通信路径和第二通信路径,所述第一通信路径为通过PC5接口进行通信的通信路径,所述第二通信路径为通过Uu接口进行通信的通信路径;
所述处理模块用于通过所述一个通信路径发送所述V2X业务的消息。
在一个可选的实施例中,所述一个通信路径是从至少两个通信路径中选择的,可以是网络设备从至少两个通信路径中选择的。
具体的,所述为V2X业务确定一个通信路径,所述一个通信路径是从至少两个通信路径中选择的,包括:
所述收发模块向网络设备发送标识信息,所述标识信息用于请求为所述V2X业务指示通信路径;
所述收发模块从所述网络设备接收指示信息,所述指示信息用于为所述V2X业务指示通信路径,所述指示信息指示的通信路径是从所述至少两个通信路径中选择的;
所述处理模块将所述指示信息指示的通信路径确定为所述一个通信路径。
在一个可选的实施例中,所述一个通信路径是从至少两个通信路径中选择的,可以是所述终端设备从至少两个通信路径中选择的。
具体的,所述处理模块为V2X业务确定一个通信路径,所述一个通信路径是所述处理模块从至少两个通信路径中选择的。
在一个可选的实施例中,所述终端设备在为所述V2X业务确定一个通信路径之前,为所述V2X业务建立第一通信路径和第二通信路径,也就是说所述第一通信路径和所述第二通信路径并行存在。
具体的,在所述处理模块为V2X业务确定一个通信路径之前,还包括:
所述收发模块向网络设备发送标识信息,所述标识信息用于请求为所述第一通信路径配置D2D直接通信资源池;
所述收发模块从所述网络设备接收所述D2D直接通信资源池的配置信息;
所述处理模块建立基于所述第二通信路径的通信连接。
需要说明的是,上述终端设备确定通信路径并通过所述通信路径发送V2X业务的消息的具体实施方式可参见方法实施例中的描述。本终端设备的实施例与上述方法实施例基于同一构思,其带来的技术效果与本发明方法实施例相同,具体内容可参见本发明方法实施例中的叙述,此处不再赘述。
为了实现上述实施例,本发明实施例还提供了一种网络设备。需要说明的是,该网络设备能够执行上述实施例中的方法,因此,其具体细节可以参照上述实施例中的描述,为了节约篇幅,后文相同的内容不再赘述。
如图7所示,所述网络设备可以包括处理模块和收发模块,所述处理模块和收发模块通信连接。当然,所述网络设备还可以包括存储模块等。
所述收发模块用于从终端设备接收标识信息,所述标识信息用于请求为所述V2X业务指示通信路径;
所述处理模块用于从至少两个通信路径中选择一个通信路径,所述至少两个通信路径包括第一通信路径和第二通信路径,所述第一通信路径为通过PC5接口进行通信的通信路径,所述第二通信路径为通过Uu接口进行通信的通信路径;
所述收发模块,用于向所述终端设备发送指示信息,所述指示信息指示所述一个通信路径为所述V2X业务的通信路径。
需要说明的是,上述网络设备响应于标识信息选择通信路径的具体实施方式可参见方法实施例中的描述。本网络设备的实施例与上述方法实施例基于同一构思,其带来的技术效果与本发明方法实施例相同,具体内容可参见本发明方法实施例中的叙述,此处不再赘述。
需要说明的是,本发明上述所有实施例中的处理模块可以由至少一个处理器实现,这里处理器可以是一个中央处理器(central processing unit,CPU),还可以是其他通用处理器、数字信号处理器(digital singal processor,DSP)、专用集成电路(application-specific integrated circuit,ASIC)、现场可编程门阵列(field programmable gate array,FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件等。发送模块可以由发送器实现,也可以是收发器实现。接收模块可以由接收器实现,也可以是收发器实现。此外,本发明上述实施例中的接入网设备和用户设备还可以包括存储器等部件,这里存储器可以包 括只读存储器和随机存取存储器,并向处理器提供指令和数据。存储器的一部分还可以包括非易失性随机存取存储器。例如,存储器还可以存储设备类型的信息。处理器调用存储器的指令代码,控制本发明实施例中的网络设备和用户设备中的其他模块执行上述操作。
应理解,说明书通篇中提到的“一个实施例”,“一实施例”,或“本发明实施例”意味着与实施例有关的特定特征、结构或特性包括在本发明的至少一个实施例中。因此,在整个说明书各处出现的“在一个实施例中”,“在一实施例中”,或“本发明实施例中”未必一定指相同的实施例。此外,这些特定的特征、结构或特性可以任意适合的方式结合在一个或多个实施例中。
在本发明的各种实施例中,应理解,上述各过程的序号的大小并不意味着执行顺序的先后,各过程的执行顺序应以其功能和内在逻辑确定,而不应对本发明实施例的实施过程构成任何限定。
另外,本文中术语“系统”和“网络”在本文中常可互换使用。应理解,本文中术语“和/或”,仅仅是一种描述关联对象的关联关系,表示可以存在三种关系,例如,A和/或B,可以表示:单独存在A,同时存在A和B,单独存在B这三种情况。另外,本文中字符“/”,一般表示前后关联对象是一种“或”的关系。
在本申请所提供的实施例中,应理解,“与A相应的B”表示B与A相关联,根据A可以确定B。但还应理解,根据A确定B并不意味着仅仅根据A确定B,还可以根据A和/或其它信息确定B。
本领域普通技术人员可以意识到,结合本文中所公开的实施例描述的各示例的单元及算法步骤,能够以电子硬件、计算机软件或者二者的结合来实现,为了清楚地说明硬件和软件的可互换性,在上述说明中已经按照功能一般性地描述了各示例的组成及步骤。这些功能究竟以硬件还是软件方式来执行,取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能,但是这种实现不应认为超出本发明的范围。
在本申请所提供的几个实施例中,所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口,装置或单元的间接耦合或通信连接,可以是电性,机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的,作为 单元显示的部件可以是或者也可以不是物理单元,即可以位于一个地方,或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
集成的单元如果以软件功能单元的形式实现并作为独立的产品销售或使用时,可以存储在一个计算机可读取存储介质中。基于这样的理解,本发明的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来,该计算机软件产品存储在一个存储介质中,包括若干指令用以使得一台计算机设备(可以是个人计算机,服务器,或者网络设备等)执行本发明各个实施例所述方法的全部或部分步骤。而前述的存储介质包括:U盘、移动硬盘、只读存储器(Read-Only Memory,简称为ROM)、随机存取存储器(Random Access Memory,简称为RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述,仅为本发明的具体实施方式,但本发明的保护范围并不局限于此,任何熟悉本技术领域的技术人员在本发明揭露的技术范围内,可轻易想到变化或替换,都应涵盖在本发明的保护范围之内。因此,本发明的保护范围应以所述权利要求的保护范围为准。

Claims (40)

  1. 一种V2X业务的消息发送方法,其特征在于,包括:
    终端设备为V2X业务确定一个通信路径,所述一个通信路径是从至少两个通信路径中选择的,所述至少两个通信路径包括第一通信路径和第二通信路径,所述第一通信路径为通过PC5接口进行通信的通信路径,所述第二通信路径为通过Uu接口进行通信的通信路径;
    所述终端设备通过所述一个通信路径发送所述V2X业务的消息。
  2. 根据权利要求1所述的方法,其特征在于,所述终端设备为V2X业务确定一个通信路径,包括:
    所述终端设备从所述网络设备接收指示信息,所述指示信息用于为所述V2X业务指示所述一个通信路径,所述指示信息指示的所述一个通信路径是所述网络设备从所述至少两个通信路径中选择的;
    所述终端设备根据所述指示信息确定所述一个通信路径。
  3. 根据权利要求1或2所述的方法,在所述终端设备为V2X业务确定一个通信路径之前,还包括:
    所述终端设备向网络设备发送第一标识信息,所述第一标识信息用于请求为所述V2X业务指示通信路径。
  4. 根据权利要求1-3中任一所述的方法,在所述终端设备为V2X业务确定一个通信路径之前,还包括:
    所述终端设备向所述网络设备发送所述V2X业务的消息类别信息;和/或
    所述终端设备向所述网络设备发送所述第一通信路径的无线环境测量信息和/或所述第二通信路径的无线环境测量信息。
  5. 根据权利要求2-4中任一所述的方法,其特征在于,所述指示信息指示的通信路径是所述第一通信路径;
    在所述终端设备通过所述一个通信路径发送所述V2X业务的消息之前,所述方法还包括:
    所述终端设备从所述网络设备接收D2D直接通信资源池的配置信息,所述D2D直接通信资源池是为所述第一通信路径配置的。
  6. 根据权利要求1所述的方法,其特征在于,所述终端设备为V2X业务确定一个通信路径,包括:
    所述终端设备从所述至少两个通信路径中选择所述一个通信路径。
  7. 根据权利要求6所述的方法,其特征在于,所述终端设备从所述至少两个通信路径中选择所述一个通信路径,包括:
    所述终端设备基于所述V2X业务的消息类别信息从所述至少两个通信路径中选择所述一个通信路径;或
    所述终端设备基于所述第一通信路径的无线环境测量信息和/或所述第二通信路径的无线环境测量信息从所述至少两个通信路径中选择所述一个通信路径。
  8. 根据权利要求1所述的方法,在所述终端设备为V2X业务确定一个通信路径之前,还包括:
    所述终端设备向网络设备发送第二标识信息,所述第二标识信息用于请求为所述第一通信路径配置D2D直接通信资源池;
    所述终端设备从所述网络设备接收所述D2D直接通信资源池的配置信息;
    所述终端设备建立基于所述第二通信路径的通信连接。
  9. 根据权利要求5或8中任一所述的方法,其特征在于,所述D2D直接通信资源池包括专有资源池。
  10. 根据权利要求3-5,或9中任一所述的方法,其特征在于,所述终端设备向网络设备发送第一标识信息,包括:
    所述终端设备通过第一无线资源控制RRC专用消息向所述网络设备发送所述第一标识信息。
  11. 根据权利要求8或9中任一所述的方法,其特征在于,所述终端设备向网络设备发送第二标识信息,包括:
    所述终端设备通过第二RRC专用消息向所述网络设备发送所述第二标识信息。
  12. 根据权利要求1-11中任一所述的方法,在所述终端设备为V2X业务确定一个通信路径之后,还包括:
    所述终端设备确定所述V2X业务当前使用的通信路径是与所述一个通信路径不同的通信路径;
    所述终端设备停止使用所述当前使用的通信路径。
  13. 根据权利要求1-12中任一所述的方法,其特征在于,所述终端设备为V2X业务确定一个通信路径的触发条件,包括如下中的至少一个:
    所述V2X业务初始化;
    所述V2X业务的消息存在超时丢弃;
    所述第二通信路径的负载高于第一阈值;
    所述终端设备从无线通信系统的覆盖范围外进入到所述无线通信系统的覆盖范围内。
  14. 一种V2X业务处理方法,其特征在于,包括:
    所述网络设备从至少两个通信路径中选择一个通信路径,所述至少两个通信路径包括第一通信路径和第二通信路径,所述第一通信路径为通过PC5接口进行通信的通信路径,所述第二通信路径为通过Uu接口进行通信的通信路径;
    所述网络设备向所述终端设备发送指示信息,所述指示信息指示所述一个通信路径为所述V2X业务的通信路径。
  15. 根据权利要求14所述的方法,在所述网络设备从至少两个通信路径中选择一个通信路径之前,还包括:
    所述网络设备从终端设备接收标识信息,所述标识信息用于请求为所述V2X业务指示通信路径。
  16. 根据权利要求14或15所述的方法,在所述网络设备从至少两个通信路径中选择一个通信路径之前,还包括:
    所述网络设备从所述终端设备接收所述V2X业务的消息类别信息;
    所述网络设备从至少两个通信路径中选择一个通信路径,包括:
    所述网络设备基于所述V2X业务的消息类别信息从所述至少两个通信路径中选择一个通信路径。
  17. 根据权利要求14或15所述的方法,在所述网络设备从至少两个通信路径中选择一个通信路径之前,还包括:
    所述网络设备从所述终端设备接收所述第一通信路径的无线环境测量信息 和/或所述第二通信路径的无线环境测量信息;
    所述网络设备从至少两个通信路径中选择一个通信路径,包括:
    所述网络设备基于所述第一通信路径的无线环境测量信息和/或所述第二通信路径的无线环境测量信息从所述至少两个通信路径中选择一个通信路径。
  18. 根据权利要求14-17中任一所述的方法,其特征在于,所述一个通信路径是第一通信路径;
    在所述网络设备向所述终端设备发送指示信息中,或,所述网络设备向所述终端设备发送指示信息后,所述方法还包括:
    所述网络设备还向所述终端设备发送D2D直接通信资源池的配置信息,所述D2D直接通信资源池是为所述第一通信路径配置的。
  19. 根据权利要求18所述的方法,其特征在于,所述D2D直接通信资源池包括专有资源池。
  20. 根据权利要求15-19中任一所述的方法,其特征在于,所述网络设备从终端设备接收标识信息,包括:
    所述网络设备通过所述终端设备发送的无线资源控制RRC专用消息接收所述标识信息。
  21. 一种终端设备,其特征在于,包括:
    处理模块,用于为V2X业务确定一个通信路径,所述一个通信路径是从至少两个通信路径中选择的,所述至少两个通信路径包括第一通信路径和第二通信路径,所述第一通信路径为通过PC5接口进行通信的通信路径,所述第二通信路径为通过Uu接口进行通信的通信路径;
    收发模块,用于通过所述一个通信路径发送所述V2X业务的消息。
  22. 根据权利要求21所述的终端设备,其特征在于,
    所述收发模块用于从所述网络设备接收指示信息,所述指示信息用于为所述V2X业务指示所述一个通信路径,所述指示信息指示的所述一个通信路径是所述网络设备从所述至少两个通信路径中选择的;
    所述处理模块用于根据所述指示信息确定所述一个通信路径。
  23. 根据权利要求21或22所述的终端设备,其特征在于,
    所述收发模块还用于,从所述网络设备接收指示信息之前,向网络设备发送第一标识信息,所述第一标识信息用于请求为所述V2X业务指示通信路径。
  24. 根据权利要求21-23中任一所述的终端设备,其特征在于,
    所述收发模块还用于,从所述网络设备接收指示信息之前,向所述网络设备发送所述V2X业务的消息类别信息;和/或
    所述收发模块还用于,从所述网络设备接收指示信息之前,向所述网络设备发送所述第一通信路径的无线环境测量信息和/或所述第二通信路径的无线环境测量信息。
  25. 根据权利要求21-24中任一所述的终端设备,其特征在于,所述指示信息指示的通信路径是所述第一通信路径;
    所述收发模块还用于,在通过所述一个通信路径发送所述V2X业务的消息之前,从所述网络设备接收D2D直接通信资源池的配置信息,所述D2D直接通信资源池是为所述第一通信路径配置的。
  26. 根据权利要求21所述的终端设备,其特征在于,所述处理模块为V2X业务确定一个通信路径,包括:
    所述处理模块从所述至少两个通信路径中选择所述一个通信路径。
  27. 根据权利要求26所述的终端设备,所述处理模块从至少两个通信路径中选择所述一个通信路径,包括:
    所述处理模块基于所述V2X业务的消息类别信息从所述至少两个通信路径中选择所述一个通信路径;或
    所述处理模块基于所述第一通信路径的无线环境测量信息和/或所述第二通信路径的无线环境测量信息从所述至少两个通信路径中选择所述一个通信路径。
  28. 根据权利要求21所述的终端设备,其特征在于,:
    所述收发模块还用于,在所述处理模块为V2X业务确定一个通信路径之前,向网络设备发送第二标识信息,所述第二标识信息用于请求为所述第一通信路径配置D2D直接通信资源池;
    所述收发模块还用于,在所述处理模块为V2X业务确定一个通信路径之前,从所述网络设备接收所述D2D直接通信资源池的配置信息;
    所述处理模块还用于,在为V2X业务确定一个通信路径之前,建立基于所述第二通信路径的通信连接。
  29. 根据权利要求25或28所述的终端设备,其特征在于,所述D2D直接通信资源池包括专有资源池。
  30. 根据权利要求23-25,或29中任一所述的终端设备,其特征在于,所述发送模块向网络设备发送第一标识信息,包括:
    所述发送模块通过第一无线资源控制RRC专用消息向所述网络设备发送所述第一标识信息。
  31. 根据权利要求28或29中任一所述的终端设备,其特征在于,所述发送模块向网络设备发送第二标识信息,包括:
    所述发送模块通过第二RRC专用消息向所述网络设备发送所述第二标识信息。
  32. 根据权利要求21-31中任一所述的终端设备,其特征在于,
    所述处理模块还用于,在为V2X业务确定一个通信路径之后,确定所述V2X业务当前使用的通信路径是与所述一个通信路径不同的通信路径;
    所述处理模块停止使用所述当前使用的通信路径。
  33. 根据权利要求21-32中任一所述的终端设备,其特征在于,所述处理模块为V2X业务确定一个通信路径的触发条件,包括如下中的至少一个:
    所述V2X业务初始化;
    所述V2X业务的消息存在超时丢弃;
    所述第二通信路径的负载高于第一阈值;
    所述终端设备从无线通信系统的覆盖范围外进入到所述无线通信系统的覆盖范围内。
  34. 一种网络设备,其特征在于,包括:
    处理模块,用于从至少两个通信路径中选择一个通信路径,所述至少两个通信路径包括第一通信路径和第二通信路径,所述第一通信路径为通过PC5接口进行通信的通信路径,所述第二通信路径为通过Uu接口进行通信的通信路径;
    收发模块,用于向所述终端设备发送指示信息,所述指示信息指示所述一个通信路径为所述V2X业务的通信路径。
  35. 根据权利要求34所述的网络设备,其特征在于,
    所述收发模块还用于,在所述处理模块从至少两个通信路径中选择一个通信路径之前,从终端设备接收标识信息,所述标识信息用于请求为所述V2X业务指示通信路径。
  36. 根据权利要求34或35所述的网络设备,,其特征在于,
    所述收发模块还用于,在所述处理模块从至少两个通信路径中选择一个通信路径之前,从所述终端设备接收所述V2X业务的消息类别信息;
    所述处理模块从至少两个通信路径中选择一个通信路径,包括:
    所述处理模块基于所述V2X业务的消息类别信息从所述至少两个通信路径中选择一个通信路径。
  37. 根据权利要求34或35所述的网络设备,其特征在于,
    所述收发模块还用于,在所述处理模块从至少两个通信路径中选择一个通信路径之前,从所述终端设备接收所述第一通信路径的无线环境测量信息和/或所述第二通信路径的无线环境测量信息;
    所述处理模块从至少两个通信路径中选择一个通信路径,包括:
    所述处理模块基于所述第一通信路径的无线环境测量信息和/或所述第二通信路径的无线环境测量信息从所述至少两个通信路径中选择一个通信路径。
  38. 根据权利要求34-37中任一所述的网络设备,其特征在于,所述一个通信路径是第一通信路径;
    所述收发模块,向所述终端设备发送指示信息中,或,向所述终端设备发送指示信息后,向所述终端设备发送D2D直接通信资源池的配置信息,所述D2D直接通信资源池是为所述第一通信路径配置的。
  39. 根据权利要求38所述的网络设备,其特征在于,所述D2D直接通信资源池包括专有资源池。
  40. 根据权利要求35-39中任一所述的网络设备,其特征在于,所述收发模块从终端设备接收标识信息,包括:
    所述收发模块通过所述终端设备发送的无线资源控制RRC专用消息接收所述标识信息。
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