WO2017128543A1 - 用于车辆通信的资源调度方法、装置、终端和基站 - Google Patents

用于车辆通信的资源调度方法、装置、终端和基站 Download PDF

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Publication number
WO2017128543A1
WO2017128543A1 PCT/CN2016/080826 CN2016080826W WO2017128543A1 WO 2017128543 A1 WO2017128543 A1 WO 2017128543A1 CN 2016080826 W CN2016080826 W CN 2016080826W WO 2017128543 A1 WO2017128543 A1 WO 2017128543A1
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WIPO (PCT)
Prior art keywords
terminal
vehicle communication
base station
time
message
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PCT/CN2016/080826
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English (en)
French (fr)
Inventor
郑倩
雷艺学
张云飞
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Yulong Computer Telecommunication Scientific Shenzhen Co Ltd
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Yulong Computer Telecommunication Scientific Shenzhen Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/01—Protocols
    • H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/2866—Architectures; Arrangements
    • H04L67/30—Profiles
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H04W72/1263—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a resource scheduling method for vehicle communication, a resource scheduling device for vehicle communication, a terminal, and a base station.
  • V2X Vehicle to X, vehicle-to-target communication
  • V2X includes V2V (Vehicle to Vehicle), V2P (Vehicle to Pedestrian), V2I (Vehicle to Infrastructure), and so on.
  • V2V communication can realize V2V message transmission through Uu interface (interface between user equipment and base station), PC5 interface (interface between user equipment and user equipment) or Uu interface and PC5 interface.
  • Uu interface interface between user equipment and base station
  • PC5 interface interface between user equipment and user equipment
  • PC5 interface interface between user equipment and user equipment
  • the source vehicle 102 (ie, the V2V message transmitting end) passes through the sublink (Sidelink, SL) to the target vehicle (such as the vehicle 104 shown in FIG. 1).
  • the vehicle 106 and the vehicle 108) send a V2V message.
  • the D2D (Device to Device) resource allocation method includes two modes, a scheduling mode and a resource pool mode.
  • the scheduling mode resources of D2D communication are allocated by a base station (eNB).
  • eNB base station
  • the current resource allocation method based on the eNB scheduling mode of the Rel-13D2D is a dynamic scheduling mechanism, that is, the SL grant is re-issued for the UE (User Equipment) in each TTI (Transmission Time Interval). Indicates the allocated time-frequency resource.
  • the current dynamic scheduling mechanism does not apply to all V2V service classes. type. As shown in Table 1, some V2V services are periodic broadcast messages with small data packets and basically the same size, or periodic broadcast messages triggered by events. If dynamic scheduling mechanisms are adopted, the PDCCH will be added. The overhead of the Physical Downlink Control Channel (physical downlink control channel) may lead to a problem of low resource utilization efficiency.
  • the present invention is based on at least one of the above technical problems, and proposes a new resource scheduling scheme for vehicle communication, so that when the terminal performs V2V service, the base station can adopt a semi-static scheduling mechanism to configure time-frequency resources to the terminal.
  • the overhead of the PDCCH can be reduced, so that the base station uses more resources for scheduling other terminals, thereby improving resource utilization efficiency.
  • a resource scheduling method for vehicle communication includes: acquiring a configuration parameter allocated by a base station for semi-persistent scheduling on a secondary link; according to the configuration parameter, Determining a time-frequency resource for periodically transmitting a vehicle communication message; periodically transmitting the vehicle communication message based on the time-frequency resource.
  • the terminal acquires configuration parameters for semi-persistent scheduling on the secondary link allocated by the base station, to determine time-frequency resources for periodically transmitting the vehicle communication message according to the configuration parameter, and periodically according to the determined time-frequency resource. Transmitting vehicle communication messages so that the terminal is performing V2V During the service, the base station can use the semi-persistent scheduling mechanism to configure the time-frequency resource to the terminal, and achieve the purpose of “one-time allocation and multiple-use”, thereby reducing the overhead of the PDCCH, so that the base station uses more resources for the base station. Scheduling other terminals improves resource utilization efficiency and solves the problem of low resource utilization efficiency caused by the use of semi-static scheduling mechanisms in related technologies.
  • the step of acquiring the configuration parameters of the semi-persistent scheduling on the secondary link that are allocated by the base station specifically includes:
  • the base station can actively allocate configuration parameters to the terminal according to the previously known message characteristics; on the other hand, the terminal can also send a semi-persistent scheduling configuration request to the base station to trigger the base station to allocate configuration parameters to the terminal. .
  • the message characteristics of the vehicle communication service include: whether the vehicle communication message is a periodic message, a type of the vehicle communication message, a transmission frequency of the vehicle communication message, a data size of the vehicle communication message, and a duration of the vehicle communication message.
  • the method further includes:
  • the re-allocated configuration parameters may be actively sent to the terminal; on the other hand, the terminal may also send a reconfiguration request to the base station (for example, the terminal performs The message characteristics of the V2V service are changed) to trigger the base station to re-allocate configuration parameters to the terminal.
  • the step of determining a time-frequency resource for periodically transmitting a vehicle communication message according to the configuration parameter specifically includes:
  • RNTI Radio Network Temporary Identity
  • the terminal can monitor the physical downlink control information sent by the base station by monitoring the PDCCH or the e-PDCCH (Enhanced PDCCH, enhanced physical downlink control channel).
  • PDCCH Physical Downlink control information
  • e-PDCCH Enhanced PDCCH, enhanced physical downlink control channel
  • the method further includes:
  • the terminal when determining that the duration of the vehicle communication message reaches a predetermined duration, the terminal may stop using the time-frequency resource allocated by the base station, and the base station also determines that the predetermined duration is reached according to the duration of the vehicle communication message.
  • the time-frequency resource can be released.
  • the base station can actively determine whether the time-frequency resource allocated to the terminal needs to be released. If the time-frequency resource allocated to the terminal needs to be released, the corresponding indication information is sent to the terminal.
  • a resource scheduling method for vehicle communication comprising: allocating a configuration parameter for semi-persistent scheduling on a secondary link to a terminal; and transmitting the configuration parameter to the terminal Transmitting, to the terminal, physical downlink control information, so that the terminal determines a time-frequency resource for periodically transmitting a vehicle communication message based on the configuration parameter and the physical downlink control information.
  • the base station allocates configuration parameters for semi-persistent scheduling on the secondary link to the terminal, so that the terminal determines the time-frequency resource for periodically transmitting the vehicle communication message according to the configuration parameter, so that when the terminal performs the V2V service,
  • the base station can use the semi-persistent scheduling mechanism to configure the time-frequency resource to the terminal, and achieve the purpose of “one-time allocation and multiple-use”, thereby reducing the overhead of the PDCCH, so that the base station uses more resources for scheduling other.
  • the terminal improves the resource utilization efficiency and solves the problem that the semi-static scheduling mechanism in the related technology leads to low resource utilization efficiency.
  • the step of allocating, to the terminal, configuration parameters for performing semi-persistent scheduling on the secondary link specifically includes:
  • the base station can actively allocate configuration parameters to the terminal according to the previously known message characteristics; on the other hand, the terminal can also send a semi-persistent scheduling configuration request to the base station, when the base station receives the configuration request. Assign configuration parameters to the terminal.
  • the message characteristics of the vehicle communication service include: whether the vehicle communication message is a periodic message, a type of the vehicle communication message, a transmission frequency of the vehicle communication message, a data size of the vehicle communication message, and a duration of the vehicle communication message.
  • the method further includes:
  • the re-allocated configuration parameters may be actively sent to the terminal; on the other hand, the terminal may also send a reconfiguration request to the base station (for example, the terminal performs The message characteristics of the V2V service are changed.
  • the base station re-assigns the configuration parameters to the terminal when receiving the reconfiguration request.
  • the method before the step of allocating the configuration parameters for semi-persistent scheduling on the secondary link to the terminal, the method further includes:
  • the step of assigning the configuration parameters to the terminal for semi-persistent scheduling on the secondary link is performed.
  • the mechanism can accurately determine the terminal capable of semi-persistent scheduling. Specifically, if the message characteristic of the vehicle communication service performed by the terminal indicates that the vehicle communication message is not a periodic message, it is determined that the terminal is not allowed to use the semi-static scheduling mechanism on the secondary link; and if the terminal performs the vehicle communication service message The feature indicates that the vehicle communication message is a periodic message and the size of the message is below a certain threshold, then it is determined that the terminal is permitted to use a semi-persistent scheduling mechanism on the secondary link.
  • the method further includes:
  • the terminal when determining that the duration of the vehicle communication message reaches a predetermined duration, the terminal may stop using the time-frequency resource allocated by the base station, and at this time, the base station determines that the predetermined duration is reached according to the duration of the vehicle communication message, and may The time-frequency resource is released.
  • the base station can actively determine whether the time-frequency resource allocated to the terminal needs to be released. If the time-frequency resource allocated to the terminal needs to be released, the corresponding indication information is sent to the terminal.
  • a resource scheduling apparatus for vehicle communication comprising: an obtaining unit, configured to acquire configuration parameters allocated by a base station for semi-persistent scheduling on a secondary link; And determining, according to the configuration parameter, a time-frequency resource for periodically transmitting a vehicle communication message; and a transmitting unit, configured to periodically transmit the vehicle communication message based on the time-frequency resource.
  • the terminal acquires configuration parameters for semi-persistent scheduling on the secondary link allocated by the base station, to determine time-frequency resources for periodically transmitting the vehicle communication message according to the configuration parameter, and periodically according to the determined time-frequency resource.
  • the vehicle communication message is transmitted so that the terminal can perform the V2V service, and the base station can configure the time-frequency resource to the terminal by using a semi-persistent scheduling mechanism, thereby achieving the purpose of “one-time allocation and multiple-use”, thereby reducing the overhead on the PDCCH.
  • the resource utilization efficiency is improved, and the problem that the resource utilization efficiency is low due to the semi-static scheduling mechanism in the related art is solved.
  • the acquiring unit includes:
  • a first receiving unit configured to receive a configuration parameter that is allocated by the base station according to a message feature of a vehicle communication service performed by the terminal;
  • a first interaction unit configured to send a semi-persistent scheduling configuration request to the base station, and receive a configuration parameter that is allocated by the base station according to a message feature of the vehicle communication service performed by the terminal included in the configuration request.
  • the base station can actively allocate configuration parameters to the terminal according to the previously known message characteristics; on the other hand, the terminal can also send a semi-persistent scheduling configuration request to the base station to trigger the base station to allocate configuration parameters to the terminal. .
  • the message characteristics of the vehicle communication service include: whether the vehicle communication message is a periodic message, a type of the vehicle communication message, a transmission frequency of the vehicle communication message, a data size of the vehicle communication message, and a duration of the vehicle communication message.
  • the method further includes: a second receiving unit, configured to receive the configuration parameter that is re-allocated by the base station; or a second interaction unit, configured to send a semi-persistent scheduling to the base station Reconfiguring the request, and receiving the configuration parameter that the base station re-allocates to the terminal according to the reconfiguration request;
  • the determining unit is further configured to: re-determine a time-frequency resource for periodically transmitting the vehicle communication message according to the configuration parameter re-allocated by the base station;
  • the transmitting unit is further configured to periodically transmit the vehicle communication message based on a time-frequency resource that is determined by the determining unit.
  • the re-allocated configuration parameters may be actively sent to the terminal; on the other hand, the terminal may also send a reconfiguration request to the base station (for example, the terminal performs The message characteristics of the V2V service are changed) to trigger the base station to re-allocate configuration parameters to the terminal.
  • the determining unit is specifically configured to:
  • the terminal may monitor the PDCCH or the e-PDCCH to monitor the sending by the base station.
  • Physical downlink control information may be used to monitor the PDCCH or the e-PDCCH to monitor the sending by the base station.
  • the transmission unit is further configured to:
  • the terminal when determining that the duration of the vehicle communication message reaches a predetermined duration, the terminal may stop using the time-frequency resource allocated by the base station, and the base station also determines that the predetermined duration is reached according to the duration of the vehicle communication message.
  • the time-frequency resource can be released.
  • the base station can actively determine whether the time-frequency resource allocated to the terminal needs to be released. If the time-frequency resource allocated to the terminal needs to be released, the corresponding indication information is sent to the terminal.
  • a resource scheduling apparatus for vehicle communication comprising: an allocating unit, configured to allocate, to a terminal, configuration parameters for semi-persistent scheduling on a secondary link; and a sending unit, configured to: And sending the configuration parameter to the terminal, and configured to send physical downlink control information to the terminal, so that the terminal determines, according to the configuration parameter and the physical downlink control information, that the vehicle communication message is periodically transmitted. Time-frequency resources.
  • the base station allocates configuration parameters for semi-persistent scheduling on the secondary link to the terminal, so that the terminal determines the time-frequency resource for periodically transmitting the vehicle communication message according to the configuration parameter, so that when the terminal performs the V2V service,
  • the base station can use the semi-persistent scheduling mechanism to configure the time-frequency resource to the terminal, and achieve the purpose of “one-time allocation and multiple-use”, thereby reducing the overhead of the PDCCH, so that the base station uses more resources for scheduling other.
  • the terminal improves the resource utilization efficiency and solves the problem that the semi-static scheduling mechanism in the related technology leads to low resource utilization efficiency.
  • the allocating unit is specifically configured to:
  • the base station can take the initiative according to the message features that have been known in advance.
  • the terminal allocates configuration parameters to the terminal.
  • the terminal may also send a semi-persistent scheduling configuration request to the base station, and the base station allocates configuration parameters to the terminal when receiving the configuration request.
  • the message characteristics of the vehicle communication service include: whether the vehicle communication message is a periodic message, a type of the vehicle communication message, a transmission frequency of the vehicle communication message, a data size of the vehicle communication message, and a duration of the vehicle communication message.
  • the allocating unit is further configured to:
  • the re-allocated configuration parameters may be actively sent to the terminal; on the other hand, the terminal may also send a reconfiguration request to the base station (for example, the terminal performs The message characteristics of the V2V service are changed.
  • the base station re-assigns the configuration parameters to the terminal when receiving the reconfiguration request.
  • the method further includes:
  • a determining unit configured to determine, according to a message feature of the vehicle communication service performed by the terminal, whether to permit the terminal to use a semi-static scheduling mechanism on the secondary link before the allocation unit allocates the configuration parameter to the terminal ;
  • the allocating unit is specifically configured to perform an operation of allocating the configuration parameter to the terminal when the determining unit determines that the terminal is permitted to use the semi-static scheduling mechanism on the secondary link.
  • the terminal capable of semi-persistent scheduling can be accurately determined. Specifically, if the message characteristic of the vehicle communication service performed by the terminal indicates that the vehicle communication message is not a periodic message, it is determined that the terminal is not allowed to use the semi-static scheduling mechanism on the secondary link; and if the terminal performs the vehicle communication service message The feature indicates that the vehicle communication message is a periodic message and the size of the message is below a certain threshold, then it is determined that the terminal is permitted to use a semi-persistent scheduling mechanism on the secondary link.
  • the method further includes:
  • a resource release unit configured to: when the duration of the vehicle communication message reaches a predetermined duration, Release the time-frequency resource; or
  • a processing unit configured to send, to the terminal, indication information for releasing the time-frequency resource, and release the time-frequency resource, where the indication information is used to instruct the terminal to stop using the time-frequency resource to transmit the vehicle communication Message.
  • the terminal when determining that the duration of the vehicle communication message reaches a predetermined duration, the terminal may stop using the time-frequency resource allocated by the base station, and at this time, the base station determines that the predetermined duration is reached according to the duration of the vehicle communication message, and may The time-frequency resource is released.
  • the base station can actively determine whether the time-frequency resource allocated to the terminal needs to be released. If the time-frequency resource allocated to the terminal needs to be released, the corresponding indication information is sent to the terminal.
  • a terminal comprising a communication bus, an input device, an output device, a memory, and a processor, wherein:
  • the communication bus is configured to implement connection communication between the input device, the output device, the memory, and the processor;
  • the input device is configured to acquire, by the base station, configuration parameters that are semi-statically scheduled on the secondary link;
  • the output device is configured to transmit a vehicle communication message
  • the program stores a set of program codes, and the terminal calls the program code stored in the memory to perform the following operations:
  • the input device acquires configuration parameters allocated by the base station for semi-persistent scheduling on the secondary link;
  • the output device periodically transmits the vehicle communication message based on the time-frequency resource.
  • the input device receives configuration parameters allocated by the base station according to message characteristics of a vehicle communication service performed by the terminal; or
  • the output device sends a semi-persistent scheduling configuration request to the base station, and the input device receives a configuration parameter that is allocated by the base station according to a message feature of a vehicle communication service performed by a terminal included in the configuration request.
  • the message characteristics of the vehicle communication service include:
  • the vehicle communication message is a periodic message, a type of vehicle communication message, a transmission frequency of the vehicle communication message, a data size of the vehicle communication message, and a duration of the vehicle communication message.
  • the input device receives the configuration parameter re-allocated by the base station; or the output device sends a semi-persistent scheduling reconfiguration request to the base station, where the input device receives the base station according to the weight Configuring the configuration parameter that is requested to be re-allocated to the terminal;
  • the processor re-determining a time-frequency resource for periodically transmitting the vehicle communication message according to the configuration parameter re-allocated by the base station, and the output device periodically transmits the time-frequency resource based on the re-determined time-frequency resource Vehicle communication message.
  • the processor monitors the physical downlink control information sent by the base station, and demodulates the time-frequency resource according to the RNTI for performing sub-link communication by the terminal included in the configuration parameter;
  • the processor determines a usage period of a time-frequency resource for transmitting the vehicle communication message according to a semi-persistent scheduling period allocated to the terminal included in the configuration parameter.
  • it also includes:
  • the output device stops transmitting the vehicle communication message using the time-frequency resource when a duration of the vehicle communication message reaches a predetermined duration
  • the output device stops transmitting the vehicle communication message by using the time-frequency resource.
  • a base station comprising a communication bus, an input device, an output device, a memory, and a processor, wherein:
  • the communication bus is configured to implement connection communication between the input device, the output device, the memory, and the processor;
  • the output device is configured to send configuration parameters and a physical downlink control message to the terminal;
  • the program stores a set of program codes, and the base station calls program code stored in the memory to perform the following operations:
  • the processor allocates configuration parameters for semi-persistent scheduling on the secondary link to the terminal;
  • the output device sends the configuration parameter to the terminal
  • the output device sends physical downlink control information to the terminal, so that the terminal determines a time-frequency resource for periodically transmitting a vehicle communication message based on the configuration parameter and the physical downlink control information.
  • the step of the processor assigning, to the terminal, the semi-persistent scheduling configuration parameter on the secondary link specifically includes:
  • the processor assigns the configuration parameter to the terminal according to a known message feature of the vehicle communication service performed by the terminal; or
  • the input device receives a semi-persistent scheduling configuration request sent by the terminal, and the processor allocates the configuration parameter to the terminal according to a message feature of a vehicle communication service performed by the terminal included in the configuration request.
  • the processor re-allocates the configuration parameter to the terminal when the configuration parameter allocated to the terminal needs to be adjusted, and the output device sends the re-allocated configuration parameter to the Terminal;
  • the processor performs the following operations before the step of allocating the configuration parameters to the terminal for semi-persistent scheduling on the secondary link:
  • the processor performs the step of assigning to the terminal configuration parameters for semi-persistent scheduling on the secondary link.
  • the processor releases the time-frequency resource when a duration of the vehicle communication message reaches a predetermined duration
  • the output device sends the indication information for releasing the time-frequency resource to the terminal, the processor releases the time-frequency resource, and the indication information is used to indicate that the terminal stops using the time-frequency resource to transmit the Vehicle communication message.
  • the base station when the terminal performs the V2V service, the base station can adopt a semi-persistent scheduling mechanism to configure the time-frequency resource to the terminal, thereby reducing the PDCCH overhead.
  • the resource utilization efficiency is improved.
  • FIG. 1 is a schematic diagram showing V2V message transmission through a PC5 interface
  • FIG. 2 shows a schematic flow chart of a resource scheduling method for vehicle communication in accordance with one embodiment of the present invention
  • FIG. 3 shows a schematic block diagram of a resource scheduling device for vehicle communication in accordance with one embodiment of the present invention
  • Figure 4 shows a schematic block diagram of a terminal in accordance with an embodiment of the present invention
  • FIG. 5 shows a schematic flow chart of a resource scheduling method for vehicle communication according to another embodiment of the present invention
  • FIG. 6 shows a schematic block diagram of a resource scheduling apparatus for vehicle communication in accordance with another embodiment of the present invention.
  • Figure 7 shows a schematic block diagram of a base station in accordance with an embodiment of the present invention.
  • FIG. 8 is a flowchart showing a process of an initialization phase of a semi-static scheduling mechanism according to an embodiment of the present invention
  • FIG. 9 is a flowchart showing a process of an activation phase of a semi-static scheduling mechanism according to an embodiment of the present invention.
  • FIG. 10 is a flowchart showing a process of a failure phase of a semi-static scheduling mechanism according to an embodiment of the present invention.
  • FIG. 11 is a flow chart showing the overall processing flow of a semi-persistent scheduling mechanism according to an embodiment of the present invention.
  • FIG. 2 shows a schematic flow diagram of a resource scheduling method for vehicle communication in accordance with one embodiment of the present invention.
  • a resource scheduling method for vehicle communication includes:
  • Step 202 Acquire a configuration parameter that is allocated by the base station to perform semi-persistent scheduling on the secondary link.
  • Step 204 Determine, according to the configuration parameter, a time-frequency resource for periodically transmitting a vehicle communication message.
  • Step 206 Periodically transmit the vehicle communication message based on the time-frequency resource.
  • the terminal acquires configuration parameters for semi-persistent scheduling on the secondary link allocated by the base station, to determine time-frequency resources for periodically transmitting the vehicle communication message according to the configuration parameter, and periodically according to the determined time-frequency resource.
  • the vehicle communication message is transmitted so that the terminal can perform the V2V service, and the base station can configure the time-frequency resource to the terminal by using a semi-persistent scheduling mechanism, thereby achieving the purpose of “one-time allocation and multiple-use”, thereby reducing the overhead on the PDCCH.
  • the resource utilization efficiency is improved, and the problem that the resource utilization efficiency is low due to the semi-static scheduling mechanism in the related art is solved.
  • the step of acquiring the configuration parameters of the semi-persistent scheduling on the secondary link that are allocated by the base station specifically includes:
  • the base station can actively allocate configuration parameters to the terminal according to the previously known message characteristics; on the other hand, the terminal can also send a semi-persistent scheduling configuration request to the base station to trigger the base station to allocate configuration parameters to the terminal. .
  • the message characteristics of the vehicle communication service include: whether the vehicle communication message is a periodic message, a type of the vehicle communication message, a transmission frequency of the vehicle communication message, a data size of the vehicle communication message, and a duration of the vehicle communication message.
  • the method further includes:
  • the re-allocated configuration parameters may be actively sent to the terminal; on the other hand, the terminal may also send a reconfiguration request to the base station (for example, the terminal performs The message characteristics of the V2V service are changed) to trigger the base station to re-allocate configuration parameters to the terminal.
  • the step of determining a time-frequency resource for periodically transmitting a vehicle communication message according to the configuration parameter specifically includes:
  • the terminal can monitor the physical downlink control information sent by the base station by monitoring the PDCCH or the e-PDCCH (Enhanced PDCCH, enhanced physical downlink control channel).
  • PDCCH Physical Downlink control information
  • e-PDCCH Enhanced PDCCH, enhanced physical downlink control channel
  • the method further includes:
  • the terminal when determining that the duration of the vehicle communication message reaches a predetermined duration, the terminal may stop using the time-frequency resource allocated by the base station, and the base station also determines that the predetermined duration is reached according to the duration of the vehicle communication message.
  • the time-frequency resource can be released.
  • the base station can actively determine whether the time-frequency resource allocated to the terminal needs to be released. If the time-frequency resource allocated to the terminal needs to be released, the corresponding indication information is sent to the terminal.
  • FIG. 3 illustrates a resource scheduling device for vehicle communication in accordance with one embodiment of the present invention. Schematic block diagram.
  • a resource scheduling apparatus 300 for vehicle communication includes an obtaining unit 302, a determining unit 304, and a transmitting unit 306.
  • the obtaining unit 302 is configured to acquire a configuration parameter that is configured by the base station to perform semi-persistent scheduling on the secondary link, and the determining unit 304 is configured to determine, according to the configuration parameter, a time-frequency resource for periodically transmitting the vehicle communication message.
  • the transmitting unit 306 is configured to periodically transmit the vehicle communication message based on the time-frequency resource.
  • the terminal acquires configuration parameters for semi-persistent scheduling on the secondary link allocated by the base station, to determine time-frequency resources for periodically transmitting the vehicle communication message according to the configuration parameter, and periodically according to the determined time-frequency resource.
  • the vehicle communication message is transmitted so that the terminal can perform the V2V service, and the base station can configure the time-frequency resource to the terminal by using a semi-persistent scheduling mechanism, thereby achieving the purpose of “one-time allocation and multiple-use”, thereby reducing the overhead on the PDCCH.
  • the resource utilization efficiency is improved, and the problem that the resource utilization efficiency is low due to the semi-static scheduling mechanism in the related art is solved.
  • the obtaining unit 302 includes:
  • a first receiving unit 3022 configured to receive, by the base station, a configuration parameter that is allocated according to a message feature of a vehicle communication service performed by the terminal;
  • the first interaction unit 3024 is configured to send a semi-persistent scheduling configuration request to the base station, and receive a configuration parameter that is allocated by the base station according to a message feature of the vehicle communication service performed by the terminal included in the configuration request.
  • the base station can actively allocate configuration parameters to the terminal according to the previously known message characteristics; on the other hand, the terminal can also send a semi-persistent scheduling configuration request to the base station to trigger the base station to allocate configuration parameters to the terminal. .
  • the message characteristics of the vehicle communication service include: whether the vehicle communication message is a periodic message, a type of the vehicle communication message, a transmission frequency of the vehicle communication message, a data size of the vehicle communication message, and a duration of the vehicle communication message.
  • the method further includes: a second receiving unit 308, configured to receive the configuration parameter that is re-allocated by the base station; or a second interaction unit 310, configured to send a semi-static to the base station Scheduling a reconfiguration request and receiving the base station according to the reconfiguration Requiring to re-allocate the configuration parameters to the terminal;
  • the determining unit 304 is further configured to: re-determine a time-frequency resource for periodically transmitting the vehicle communication message according to the configuration parameter re-allocated by the base station;
  • the transmitting unit 306 is further configured to periodically transmit the vehicle communication message based on a time-frequency resource that is determined by the determining unit 304.
  • the re-allocated configuration parameters may be actively sent to the terminal; on the other hand, the terminal may also send a reconfiguration request to the base station (for example, the terminal performs The message characteristics of the V2V service are changed) to trigger the base station to re-allocate configuration parameters to the terminal.
  • the determining unit 304 is specifically configured to:
  • the terminal may monitor the physical downlink control information sent by the base station by monitoring the PDCCH or the e-PDCCH.
  • the transmission unit 306 is further configured to:
  • the terminal when determining that the duration of the vehicle communication message reaches a predetermined duration, the terminal may stop using the time-frequency resource allocated by the base station, and the base station also determines that the predetermined duration is reached according to the duration of the vehicle communication message.
  • the time-frequency resource can be released.
  • the base station can actively determine whether the time-frequency resource allocated to the terminal needs to be released. If the time-frequency resource allocated to the terminal needs to be released, the corresponding indication information is sent to the terminal.
  • FIG. 4 shows a schematic block diagram of a terminal in accordance with an embodiment of the present invention.
  • a terminal 400 according to an embodiment of the present invention includes a communication bus 402, an input device 403, an output device 404, a memory 405, and a processor 401, wherein:
  • the communication bus 402 is configured to implement connection communication between the input device 403, the output device 404, the memory 405, and the processor 401;
  • the input device 403 is configured to acquire a configuration parameter that is configured by the base station to perform semi-persistent scheduling on the secondary link.
  • the output device 404 is configured to transmit a vehicle communication message
  • the memory 405 stores a set of program codes, and the terminal calls the program code stored in the memory 405 for performing the following operations:
  • the input device 403 acquires configuration parameters allocated by the base station for semi-persistent scheduling on the secondary link;
  • the processor 401 determines, according to the configuration parameter, a time-frequency resource for periodically transmitting a vehicle communication message
  • the output device 404 periodically transmits the vehicle communication message based on the time-frequency resource.
  • the input device 403 is configured to acquire, by the base station, a configuration parameter that performs semi-persistent scheduling on the secondary link, and specifically includes:
  • the input device 403 receives configuration parameters allocated by the base station according to message characteristics of a vehicle communication service performed by the terminal; or
  • the output device 404 sends a semi-persistent scheduling configuration request to the base station, and the input device 403 receives a configuration parameter allocated by the base station according to a message feature of a vehicle communication service performed by a terminal included in the configuration request.
  • the message characteristics of the vehicle communication service include:
  • the vehicle communication message is a periodic message, a type of vehicle communication message, a transmission frequency of the vehicle communication message, a data size of the vehicle communication message, and a duration of the vehicle communication message.
  • the input device 403 receives the configuration parameter re-allocated by the base station; or the output device 404 sends a semi-persistent scheduled reconfiguration request to the base station, where the input device 403 receives the base station according to the The configuration parameter that the reconfiguration request re-allocates to the terminal;
  • the processor 401 re-determines a time-frequency resource for periodically transmitting the vehicle communication message according to the configuration parameter re-allocated by the base station, and the output device 404 is based on re- The determined time-frequency resource periodically transmits the vehicle communication message.
  • the step of determining, by the processor 401, the time-frequency resource for periodically transmitting the vehicle communication message according to the configuration parameter specifically includes:
  • the processor 401 monitors the physical downlink control information sent by the base station, and demodulates the time-frequency resource according to the RNTI for performing sub-link communication by the terminal included in the configuration parameter;
  • the processor 401 determines a usage period of a time-frequency resource used for transmitting the vehicle communication message according to a semi-persistent scheduling period allocated to the terminal included in the configuration parameter.
  • the output device 404 stops using the time-frequency resource to transmit the vehicle communication message when the duration of the vehicle communication message reaches a predetermined duration
  • the output device 404 stops transmitting the vehicle communication message by using the time-frequency resource.
  • FIG. 5 shows a schematic flow chart of a resource scheduling method for vehicle communication in accordance with another embodiment of the present invention.
  • a resource scheduling method for vehicle communication includes:
  • Step 502 Assign a configuration parameter to the terminal for semi-persistent scheduling on the secondary link.
  • Step 504 Send the configuration parameter to the terminal.
  • Step 506 Send physical downlink control information to the terminal, so that the terminal determines, according to the configuration parameter and the physical downlink control information, a time-frequency resource for periodically transmitting a vehicle communication message.
  • the base station allocates configuration parameters for semi-persistent scheduling on the secondary link to the terminal, so that the terminal determines the time-frequency resource for periodically transmitting the vehicle communication message according to the configuration parameter, so that when the terminal performs the V2V service,
  • the base station can use the semi-persistent scheduling mechanism to configure the time-frequency resource to the terminal, and achieve the purpose of “one-time allocation and multiple-use”, thereby reducing the overhead of the PDCCH, so that the base station uses more resources for scheduling other.
  • the terminal improves the resource utilization efficiency and solves the problem that the semi-static scheduling mechanism in the related technology leads to low resource utilization efficiency.
  • the terminal is allocated to perform semi-persistent scheduling on the secondary link.
  • the steps of the configuration parameters include:
  • the base station can actively allocate configuration parameters to the terminal according to the previously known message characteristics; on the other hand, the terminal can also send a semi-persistent scheduling configuration request to the base station, when the base station receives the configuration request. Assign configuration parameters to the terminal.
  • the message characteristics of the vehicle communication service include: whether the vehicle communication message is a periodic message, a type of the vehicle communication message, a transmission frequency of the vehicle communication message, a data size of the vehicle communication message, and a duration of the vehicle communication message.
  • the method further includes:
  • the re-allocated configuration parameters may be actively sent to the terminal; on the other hand, the terminal may also send a reconfiguration request to the base station (for example, the terminal performs The message characteristics of the V2V service are changed.
  • the base station re-assigns the configuration parameters to the terminal when receiving the reconfiguration request.
  • the method before the step of allocating the configuration parameters for semi-persistent scheduling on the secondary link to the terminal, the method further includes:
  • the step of assigning the configuration parameters to the terminal for semi-persistent scheduling on the secondary link is performed.
  • the terminal capable of semi-persistent scheduling can be accurately determined.
  • a terminal The message feature of the performed vehicle communication service indicates that the vehicle communication message is not a periodic message, and then determines that the terminal is not permitted to use the semi-static scheduling mechanism on the secondary link; and if the message characteristics of the vehicle communication service performed by the terminal indicate that the vehicle communication message is A periodic message and the size of the message is below a certain threshold determines that the terminal is permitted to use a semi-persistent scheduling mechanism on the secondary link.
  • the method further includes:
  • the terminal when determining that the duration of the vehicle communication message reaches a predetermined duration, the terminal may stop using the time-frequency resource allocated by the base station, and at this time, the base station determines that the predetermined duration is reached according to the duration of the vehicle communication message, and may The time-frequency resource is released.
  • the base station can actively determine whether the time-frequency resource allocated to the terminal needs to be released. If the time-frequency resource allocated to the terminal needs to be released, the corresponding indication information is sent to the terminal.
  • FIG. 6 shows a schematic block diagram of a resource scheduling device for vehicle communication in accordance with another embodiment of the present invention.
  • a resource scheduling apparatus 600 for vehicle communication includes an allocating unit 602 and a transmitting unit 604.
  • the allocating unit 602 is configured to allocate, to the terminal, configuration parameters for semi-persistent scheduling on the secondary link, and the sending unit 604 is configured to send the configuration parameter to the terminal, and send the physical downlink to the terminal. Controlling information to cause the terminal to determine a time-frequency resource for periodically transmitting a vehicle communication message based on the configuration parameter and the physical downlink control information.
  • the base station allocates configuration parameters for semi-persistent scheduling on the secondary link to the terminal, so that the terminal determines the time-frequency resource for periodically transmitting the vehicle communication message according to the configuration parameter, so that when the terminal performs the V2V service,
  • the base station can use the semi-persistent scheduling mechanism to configure the time-frequency resource to the terminal, and achieve the purpose of “one-time allocation and multiple-use”, thereby reducing the overhead of the PDCCH, so that the base station uses more resources for scheduling other.
  • the terminal improves the resource utilization efficiency and solves the resource utilization effect caused by the semi-static scheduling mechanism in the related technology. The problem is lower.
  • the allocating unit 602 is specifically configured to:
  • the base station can actively allocate configuration parameters to the terminal according to the previously known message characteristics; on the other hand, the terminal can also send a semi-persistent scheduling configuration request to the base station, when the base station receives the configuration request. Assign configuration parameters to the terminal.
  • the message characteristics of the vehicle communication service include: whether the vehicle communication message is a periodic message, a type of the vehicle communication message, a transmission frequency of the vehicle communication message, a data size of the vehicle communication message, and a duration of the vehicle communication message.
  • the allocating unit 602 is further configured to:
  • the re-allocated configuration parameters may be actively sent to the terminal; on the other hand, the terminal may also send a reconfiguration request to the base station (for example, the terminal performs The message characteristics of the V2V service are changed.
  • the base station re-assigns the configuration parameters to the terminal when receiving the reconfiguration request.
  • the method further includes:
  • the determining unit 606 is configured to determine, according to the message feature of the vehicle communication service performed by the terminal, whether the terminal is permitted to use the semi-static on the secondary link before the allocating unit 602 allocates the configuration parameter to the terminal Scheduling mechanism;
  • the allocating unit 602 is specifically configured to perform an operation of allocating the configuration parameter to the terminal when the determining unit 606 determines that the terminal is permitted to use the semi-static scheduling mechanism on the secondary link.
  • the terminal capable of semi-persistent scheduling can be accurately determined. Specifically, if the message characteristic of the vehicle communication service performed by the terminal indicates that the vehicle communication message is not a periodic message, it is determined that the terminal is not allowed to use the semi-static scheduling mechanism on the secondary link; and if the terminal performs the vehicle communication service message The feature indicates that the vehicle communication message is a periodic message and the size of the message is below a certain threshold, then it is determined that the terminal is permitted to use a semi-persistent scheduling mechanism on the secondary link.
  • the method further includes:
  • a resource release unit 608 configured to release the time-frequency resource when a duration of the vehicle communication message reaches a predetermined duration
  • the processing unit 610 is configured to send, to the terminal, indication information for releasing the time-frequency resource, and release the time-frequency resource, where the indication information is used to instruct the terminal to stop using the time-frequency resource to transmit the vehicle. Communication message.
  • the terminal when determining that the duration of the vehicle communication message reaches a predetermined duration, the terminal may stop using the time-frequency resource allocated by the base station, and at this time, the base station determines that the predetermined duration is reached according to the duration of the vehicle communication message, and may The time-frequency resource is released.
  • the base station can actively determine whether the time-frequency resource allocated to the terminal needs to be released. If the time-frequency resource allocated to the terminal needs to be released, the corresponding indication information is sent to the terminal.
  • FIG. 7 shows a schematic block diagram of a base station in accordance with an embodiment of the present invention.
  • a base station 700 according to an embodiment of the present invention includes a communication bus 702, an input device 703, an output device 704, a memory 705, and a processor 701, where:
  • the communication bus 702 is configured to implement connection communication between the input device 703, the output device 704, the memory 705, and the processor 701;
  • the output device 704 is configured to send configuration parameters and a physical downlink control message to the terminal;
  • the memory 705 stores a set of program codes, and the base station calls the program code stored in the memory 705 for performing the following operations:
  • the processor 701 allocates, to the terminal, configuration parameters for semi-persistent scheduling on the secondary link;
  • the output device 704 sends the configuration parameter to the terminal
  • the output device 704 sends physical downlink control information to the terminal, so that the terminal determines, based on the configuration parameter and the physical downlink control information, that the vehicle communication is periodically transmitted.
  • the time-frequency resource of the message is not limited to the duration of the message.
  • the step of the processor 701 assigning, to the terminal, the semi-persistent scheduling configuration parameter on the secondary link specifically includes:
  • the processor 701 allocates the configuration parameter to the terminal according to the learned message feature of the vehicle communication service performed by the terminal; or
  • the input device 703 receives the configuration request of the semi-persistent scheduling sent by the terminal, and the processor 701 allocates the configuration parameter to the terminal according to the message feature of the vehicle communication service performed by the terminal included in the configuration request.
  • the processor 701 re-allocates the configuration parameter to the terminal when the configuration parameter allocated to the terminal needs to be adjusted, and the output device 704 sends the re-allocated configuration parameter to The terminal; or
  • the input device 703 receives a semi-persistent scheduling reconfiguration request sent by the terminal, and the processor 701 re-allocates the configuration parameter allocated to the terminal according to the reconfiguration request, and the output device 704 re-allocates the configuration parameter.
  • the configuration parameters are sent to the terminal.
  • the processor 701 further performs the following operations before the step of allocating the configuration parameters to the terminal for semi-persistent scheduling on the secondary link:
  • the processor 701 determines, according to the message feature of the vehicle communication service performed by the terminal, whether to permit the terminal to use a semi-static scheduling mechanism on the secondary link;
  • the processor 701 performs the step of assigning to the terminal configuration parameters for semi-persistent scheduling on the secondary link.
  • the processor 701 releases the time-frequency resource when the duration of the vehicle communication message reaches a predetermined duration
  • the output device 704 sends the indication information for releasing the time-frequency resource to the terminal, the processor 701 releases the time-frequency resource, and the indication information is used to indicate that the terminal stops using the time-frequency resource transmission.
  • the vehicle communication message sends the indication information for releasing the time-frequency resource to the terminal, the processor 701 releases the time-frequency resource, and the indication information is used to indicate that the terminal stops using the time-frequency resource transmission.
  • the present invention proposes to introduce a semi-static resource in a resource allocation method based on an eNB scheduling mode.
  • the source scheduling mechanism is such that the semi-persistent scheduling resource is “allocated, used multiple times”, which can reduce the overhead of the corresponding PDCCH, so as to use more resources for scheduling additional UEs, thereby facilitating the network capacity.
  • the invention develops related implementation signaling and procedures on the basis of discussing the behavior of the UE end and the eNB end. The following details are explained:
  • the semi-persistent scheduling mechanism is hereinafter referred to as the SPS (Semi-Persistent Scheduling) mechanism.
  • SPS Semi-Persistent Scheduling
  • SL SPS D2D sublink
  • the UE acquires relevant configuration parameters of the SL SPS.
  • the initialization of the SL SPS configuration of the UE may be triggered by the UE to report the request, or may be directly sent by the eNB.
  • the RRC signaling includes the message characteristics of the V2V service performed by the UE, such as whether it is a periodic message, a V2V message content type, a transmission frequency f of the V2V message, a size s of the V2V message, a duration t of the V2V message, and the like.
  • the UE does not need to report the eNB to the eNB through the explicit signaling, and the eNB directly sends the relevant configuration parameters of the SL SPS of the UE.
  • the eNB can perform this operation on the premise that the eNB already knows that the UE currently uses the dynamic scheduling mechanism and the message characteristics of the V2V service performed by the UE.
  • the eNB needs to perform the admission control before sending the configuration parameters of the SL SPS.
  • the eNB performs the admission control, in particular, the eNB jointly determines whether the UE is suitable for using the SL SPS scheduling based on one or more message features of the V2V service performed by the UE, and whether the available time-frequency resources are used for the SL SPS scheduling. For example, if the V2V service performed by the UE sends an aperiodic message, the UE is not allowed to use the semi-persistent scheduling mechanism; if the UE performs a periodic message and the size s of the message is below a certain threshold, and the available time frequency is available Resources for SL When the SPS is scheduled, the UE is allowed to use a semi-persistent scheduling mechanism.
  • the eNB sends the SL SPS configuration parameter to the UE by using the RRC signaling, where the RRC signaling includes the SPS configuration parameter of the V2V service performed by the UE, for example, the SL SPS period. T, the UE performs the unique identification SPS SL-RNTI of the SL SPS.
  • the SL SPS can also be reconfigured.
  • the reason for triggering SL SPS reconfiguration may come from the UE side or from the eNB side. For example, after the UE performs the V2V service for a period of time, certain message characteristics (sending frequency, message size, etc.) are changed, and the eNB needs to change the time-frequency resource location using the SL SPS, and the like.
  • Step 802 The UE/source vehicle sends an SL SPS configuration/reconfiguration request to the eNB through RRC signaling.
  • step 804 the eNB performs SL SPS admission control.
  • step 806 the eNB sends the configuration/reconfiguration parameters of the SL SPS to the UE/source vehicle through RRC signaling.
  • step 808 the eNB performs SL SPS admission control.
  • step 810 the eNB sends the configuration/reconfiguration parameters of the SL SPS to the UE/source vehicle through RRC signaling.
  • the UE starts periodic V2V message transmission according to the acquired SPS configuration parameters. specifically:
  • the UE listens to its own PDCCH/e-PDCCH, and demodulates the location of available time-frequency resources (ie, SPS SL grant) by the eNB for its assigned SPS SL-RNTI.
  • available time-frequency resources ie, SPS SL grant
  • the UE sends a V2V message at the demodulated time-frequency resource location.
  • the UE starts to periodically use the time-frequency resource to transmit the V2V message based on the SL SPS period T.
  • the process of the activation phase can be as shown in Figure 9, including:
  • step 902 the eNB allocates an SPS SL grant to the UE/source vehicle.
  • step 904 the UE/source vehicle monitors the PDCCH/e-PDCCH, and demodulates the location of the available time-frequency resources based on the SPS SL-RNIT.
  • Step 906 The UE/source vehicle performs periodic V2V message transmission with the UE/target vehicle based on the location of the demodulated time-frequency resource.
  • the SL SPS configuration of the UE is released, and the UE stops the periodic V2V message transmission.
  • the SL SPS configuration of the UE can be invalidated in the following two ways:
  • Method 1 The UE judges itself. Specifically, when the duration t of the V2V message arrives, the UE stops using the time-frequency resources demodulated by the SPS SL-RNTI. In this manner, because the eNB acquires the duration t of the V2V message of the UE during the initialization phase, the UE does not have to notify the eNB again, and the eNB releases the time-frequency resources for the SL SPS while the time is reached.
  • Manner 2 The eNB explicitly notifies the UE. Specifically, the eNB may issue an instruction of the release SL SPS configuration through RRC signaling, which may terminate the transmission of the V2V message in advance.
  • Step 1002 when the duration t of the V2V message arrives, the UE/source vehicle terminates the V2V;
  • step 1004 the eNB releases the time-frequency resources allocated to the UE/source vehicle.
  • Step 1006 Before the duration t of the V2V message arrives, the eNB sends a SL SPS configuration release instruction to the UE/source vehicle through RRC signaling.
  • the UE/source vehicle terminates the V2V.
  • Step 1102 The UE/source vehicle sends an SL SPS configuration/reconfiguration request to the eNB through RRC signaling.
  • the step is that the UE/source vehicle reports the request to the eNB to trigger the eNB to perform the configuration. If the eNB actively sends the configuration parameters of the SL SPS to the UE, the step is not performed.
  • step 1104 the eNB performs SL SPS admission control.
  • step 1106 the eNB sends the configuration/reconfiguration parameters of the SL SPS to the UE/source vehicle through RRC signaling.
  • step 1108 the eNB allocates an SPS SL grant to the UE/source vehicle.
  • step 1110 the UE/source vehicle monitors the PDCCH/e-PDCCH, and demodulates the location of the available time-frequency resources based on the SPS SL-RNIT.
  • Step 1112 The UE/source vehicle performs periodic V2V message transmission with the UE/target vehicle based on the location of the demodulated time-frequency resource.
  • Step 1114 The eNB sends a SL SPS configuration release instruction to the UE/source vehicle through RRC signaling.
  • This step is a step in which the eNB sends a SL SPS configuration release command to the UE/source vehicle, that is, before the duration t of the V2V message arrives, the eNB sends a SL SPS configuration release command to the UE/source vehicle, if the duration of the V2V message is t Upon arrival, the eNB does not need to transmit to the UE/source vehicle.
  • the UE/source vehicle terminates the V2V.
  • the above technical solution of the present invention introduces a semi-static resource scheduling mechanism into a V2V message transmission based on PC5/D2D, and is suitable for a periodic V2V service with a small data packet and a substantially constant size, which is beneficial to improving the capacity of the vehicle network.
  • the present invention proposes a new resource scheduling scheme for vehicle communication, so that when the terminal performs V2V service, the base station can adopt a semi-persistent scheduling mechanism to configure the terminal.
  • the time-frequency resource can further reduce the overhead of the PDCCH, so that the base station uses more resources for scheduling other terminals, thereby improving resource utilization efficiency.

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Abstract

本发明提供了一种用于车辆通信的资源调度方法、资源调度装置、终端和基站，其中，用于车辆通信的资源调度方法，包括：获取基站分配的在副链路上进行半静态调度的配置参数；根据所述配置参数，确定用于周期性传输车辆通信消息的时频资源；基于所述时频资源，周期性地传输所述车辆通信消息。本发明的技术方案使得终端在进行V2V业务时，基站能够采用半静态调度的机制来向终端配置时频资源，进而可以降低对PDCCH的开销，以使基站将更多的资源用于调度其他的终端，提高了资源利用效率。

Description

用于车辆通信的资源调度方法、装置、终端和基站
本申请要求于2016年01月29日提交中国专利局，申请号为201610064326.X、发明名称为“用于车辆通信的资源调度方法、装置、终端和基站”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明涉及通信技术领域，具体而言，涉及一种用于车辆通信的资源调度方法、一种用于车辆通信的资源调度装置、一种终端和一种基站。
背景技术
V2X(Vehicle to X，车到特定目标的通信)是3GPP RAN#68批准设立的项目，主要研究基于3GPP通信协议的车辆数据传输方案。V2X包括了V2V(Vehicle to Vehicle，车到车通信)、V2P(Vehicle to Pedestrian，车到人通信)、V2I(Vehicle to Infrastructure，车到路通信)等。V2V通信从原理上来说，可以通过Uu接口(用户设备与基站之间的接口)、PC5接口(用户设备与用户设备之间的接口)或Uu接口和PC5接口组合来实现V2V消息的传输。其中，通过PC5接口来实现V2V消息传输的方案如图1所示，源车辆102(即V2V消息发送端)通过副链路(Sidelink，SL)向目标车辆(如图1中所示的车辆104、车辆106和车辆108)发送V2V消息。
目前，D2D(Device to Device，终端直连通信)资源分配方法包含两种模式，即调度模式和资源池模式。在调度模式下，D2D通信的资源由基站(eNB)进行分配。但是，目前Rel-13D2D基于eNB调度模式的资源分配方法是动态调度机制，即在每个TTI(Transmission Time Interval，传输时间间隔)都要为UE(User Equipment，用户设备)重新下发SL grant来指示分配的时频资源。
从理论上而言，目前的动态调度机制并不能适用于所有的V2V业务类 型。如表1所示，某些V2V业务是数据包较小、且大小基本不变的周期性广播消息或者基于事件触发的周期性广播消息，如果都采用动态调度的机制，则会增加对PDCCH(Physical Downlink Control Channel，物理下行控制信道)的开销，进而会出现资源利用效率较低的问题。
Figure PCTCN2016080826-appb-000001
表1
因此，如何能够降低车辆通信对PDCCH的开销，以避免采用动态调度机制导致资源利用效率较低成为亟待解决的技术问题。
发明内容
本发明正是基于上述技术问题至少之一，提出了一种新的用于车辆通信的资源调度方案，使得终端在进行V2V业务时，基站能够采用半静态调度的机制来向终端配置时频资源，进而可以降低对PDCCH的开销，以使基站将更多的资源用于调度其他的终端，提高了资源利用效率。
有鉴于此，根据本发明的第一方面，提出了一种用于车辆通信的资源调度方法，包括：获取基站分配的在副链路上进行半静态调度的配置参数；根据所述配置参数，确定用于周期性传输车辆通信消息的时频资源；基于所述时频资源，周期性地传输所述车辆通信消息。
在该技术方案中，终端通过获取基站分配的在副链路上进行半静态调度的配置参数，以根据配置参数确定周期性传输车辆通信消息的时频资源，并根据确定的时频资源周期性地传输车辆通信消息，使得终端在进行V2V 业务时，基站能够采用半静态调度的机制来向终端配置时频资源，实现了“一次分配、多次使用”的目的，进而能够降低对PDCCH的开销，以使基站将更多的资源用于调度其他的终端，提高了资源利用效率，解决了相关技术中采用半静态调度机制而导致资源利用效率较低的问题。
在上述技术方案中，优选地，获取基站分配的在副链路上进行半静态调度的配置参数的步骤，具体包括：
接收所述基站根据终端进行的车辆通信业务的消息特征分配的配置参数；或
向所述基站发送半静态调度的配置请求，并接收所述基站根据所述配置请求中包含的终端进行的车辆通信业务的消息特征分配的配置参数。
在该技术方案中，一方面基站可以根据事先已获知的消息特征来主动向终端分配配置参数；另一方面，终端也可以向基站发送半静态调度的配置请求，以触发基站向终端分配配置参数。
其中，所述车辆通信业务的消息特征包括：车辆通信消息是否为周期性消息、车辆通信消息的类型、车辆通信消息的发送频率、车辆通信消息的数据大小和车辆通信消息的持续时长。
在上述任一技术方案中，优选地，还包括：
接收所述基站重新分配的所述配置参数；或向所述基站发送半静态调度的重配置请求，并接收所述基站根据所述重配置请求重新向所述终端分配的所述配置参数；
根据所述基站重新分配的所述配置参数，重新确定用于周期性传输所述车辆通信消息的时频资源，并基于重新确定的时频资源周期性地传输所述车辆通信消息。
在该技术方案中，一方面，若基站需要调整向终端分配的配置参数，则可以主动将重新分配的配置参数发送至终端；另一方面，终端也可以向基站发送重配置请求(如终端进行的V2V业务的消息特征发生了变化)，以触发基站重新向终端分配配置参数。
在上述任一技术方案中，优选地，根据所述配置参数，确定用于周期性传输车辆通信消息的时频资源的步骤，具体包括：
监听所述基站发送的物理下行控制信息，并根据所述配置参数中包含的终端进行副链路通信的RNTI(Radio Network Temporary Identity，无线网络临时标识)，解调出所述时频资源；以及
根据所述配置参数中包含的向所述终端分配的半静态调度周期，确定用于传输所述车辆通信消息的时频资源的使用周期。
具体地，终端可以通过监听PDCCH或者e-PDCCH(Enhanced PDCCH，增强的物理下行控制信道)来监听基站发送的物理下行控制信息。
在上述任一技术方案中，优选地，还包括：
在所述车辆通信消息的持续时长达到预定时长时，停止使用所述时频资源传输所述车辆通信消息；或
在接收到所述基站发送的释放所述时频资源的指示信息时，停止使用所述时频资源传输所述车辆通信消息。
在该技术方案中，一方面，终端在确定车辆通信消息的持续时长达到预定时长时，可以停止使用基站分配的时频资源，此时基站也根据车辆通信消息的持续时长确定达到了预定时长，可以释放该时频资源；另一方面，基站可以主动确定是否需要释放掉分配给终端的时频资源，若需要释放掉分配给终端的时频资源，则向终端发送相应的指示信息。
根据本发明的第二方面，还提出了一种用于车辆通信的资源调度方法，包括：向终端分配在副链路上进行半静态调度的配置参数；将所述配置参数发送至所述终端；向所述终端发送物理下行控制信息，以使所述终端基于所述配置参数和所述物理下行控制信息确定用于周期性传输车辆通信消息的时频资源。
在该技术方案中，基站通过向终端分配在副链路上进行半静态调度的配置参数，以使终端根据配置参数确定周期性传输车辆通信消息的时频资源，使得终端在进行V2V业务时，基站能够采用半静态调度的机制来向终端配置时频资源，实现了“一次分配、多次使用”的目的，进而能够降低对PDCCH的开销，以使基站将更多的资源用于调度其他的终端，提高了资源利用效率，解决了相关技术中采用半静态调度机制而导致资源利用效率较低的问题。
在上述技术方案中，优选地，向终端分配在副链路上进行半静态调度的配置参数的步骤，具体包括：
根据已获知的所述终端进行的车辆通信业务的消息特征向所述终端分配所述配置参数；或
接收所述终端发送的半静态调度的配置请求，根据所述配置请求中包含的终端进行的车辆通信业务的消息特征向所述终端分配所述配置参数。
在该技术方案中，一方面基站可以根据事先已获知的消息特征来主动向终端分配配置参数；另一方面，终端也可以向基站发送半静态调度的配置请求，基站在接收到该配置请求时向终端分配配置参数。
其中，所述车辆通信业务的消息特征包括：车辆通信消息是否为周期性消息、车辆通信消息的类型、车辆通信消息的发送频率、车辆通信消息的数据大小和车辆通信消息的持续时长。
在上述任一技术方案中，优选地，还包括：
在需要调整向所述终端分配的所述配置参数时，向所述终端重新分配所述配置参数，并将重新分配的所述配置参数发送至所述终端；或
接收所述终端发送的半静态调度的重配置请求，根据所述重配置请求重新为所述终端分配的所述配置参数，并将重新分配的所述配置参数发送至所述终端。
在该技术方案中，一方面，若基站需要调整向终端分配的配置参数，则可以主动将重新分配的配置参数发送至终端；另一方面，终端也可以向基站发送重配置请求(如终端进行的V2V业务的消息特征发生了变化)，基站在接收到该重配置请求时重新向终端分配配置参数。
在上述任一技术方案中，优选地，在所述向终端分配在副链路上进行半静态调度的配置参数的步骤之前，还包括：
根据所述终端进行的车辆通信业务的消息特征，判断是否准许所述终端在副链路上使用半静态调度机制；
若判定准许所述终端在副链路上使用半静态调度机制，则执行所述向终端分配在副链路上进行半静态调度的配置参数的步骤。
在该技术方案中，通过判断是否准许终端在副链路上使用半静态调度 机制，可以准确地确定出能够进行半静态调度的终端。具体来说，如终端进行的车辆通信业务的消息特征表明车辆通信消息不是周期性消息，则确定不准许该终端在副链路上使用半静态调度机制；再如若终端进行的车辆通信业务的消息特征表明车辆通信消息是周期性消息且消息的大小低于一定阈值，则确定准许该终端在副链路上使用半静态调度机制。
在上述任一技术方案中，优选地，还包括：
在所述车辆通信消息的持续时长达到预定时长时，释放所述时频资源；或
向所述终端发送释放所述时频资源的指示信息，并释放所述时频资源，所述指示信息用于指示所述终端停止使用所述时频资源传输所述车辆通信消息。
在该技术方案中，一方面，终端在确定车辆通信消息的持续时长达到预定时长时，可以停止使用基站分配的时频资源，此时基站根据车辆通信消息的持续时长确定达到了预定时长，可以释放该时频资源；另一方面，基站可以主动确定是否需要释放掉分配给终端的时频资源，若需要释放掉分配给终端的时频资源，则向终端发送相应的指示信息。
根据本发明的第三方面，还提出了一种用于车辆通信的资源调度装置，包括：获取单元，用于获取基站分配的在副链路上进行半静态调度的配置参数；确定单元，用于根据所述配置参数，确定用于周期性传输车辆通信消息的时频资源；传输单元，用于基于所述时频资源，周期性地传输所述车辆通信消息。
在该技术方案中，终端通过获取基站分配的在副链路上进行半静态调度的配置参数，以根据配置参数确定周期性传输车辆通信消息的时频资源，并根据确定的时频资源周期性地传输车辆通信消息，使得终端在进行V2V业务时，基站能够采用半静态调度的机制来向终端配置时频资源，实现了“一次分配、多次使用”的目的，进而能够降低对PDCCH的开销，以使基站将更多的资源用于调度其他的终端，提高了资源利用效率，解决了相关技术中采用半静态调度机制而导致资源利用效率较低的问题。
在上述技术方案中，优选地，所述获取单元包括：
第一接收单元，用于接收所述基站根据终端进行的车辆通信业务的消息特征分配的配置参数；或
第一交互单元，用于向所述基站发送半静态调度的配置请求，并接收所述基站根据所述配置请求中包含的终端进行的车辆通信业务的消息特征分配的配置参数。
在该技术方案中，一方面基站可以根据事先已获知的消息特征来主动向终端分配配置参数；另一方面，终端也可以向基站发送半静态调度的配置请求，以触发基站向终端分配配置参数。
其中，所述车辆通信业务的消息特征包括：车辆通信消息是否为周期性消息、车辆通信消息的类型、车辆通信消息的发送频率、车辆通信消息的数据大小和车辆通信消息的持续时长。
在上述任一技术方案中，优选地，还包括：第二接收单元，用于接收所述基站重新分配的所述配置参数；或第二交互单元，用于向所述基站发送半静态调度的重配置请求，并接收所述基站根据所述重配置请求重新向所述终端分配的所述配置参数；
所述确定单元还用于，根据所述基站重新分配的所述配置参数，重新确定用于周期性传输所述车辆通信消息的时频资源；
所述传输单元还用于，基于所述确定单元重新确定的时频资源周期性地传输所述车辆通信消息。
在该技术方案中，一方面，若基站需要调整向终端分配的配置参数，则可以主动将重新分配的配置参数发送至终端；另一方面，终端也可以向基站发送重配置请求(如终端进行的V2V业务的消息特征发生了变化)，以触发基站重新向终端分配配置参数。
在上述任一技术方案中，优选地，所述确定单元具体用于：
监听所述基站发送的物理下行控制信息，并根据所述配置参数中包含的终端进行副链路通信的RNTI，解调出所述时频资源；以及
根据所述配置参数中包含的向所述终端分配的半静态调度周期，确定用于传输所述车辆通信消息的时频资源的使用周期。
具体地，终端可以通过监听PDCCH或者e-PDCCH来监听基站发送的 物理下行控制信息。
在上述任一技术方案中，优选地，所述传输单元还用于：
在所述车辆通信消息的持续时长达到预定时长时，停止使用所述时频资源传输所述车辆通信消息；或
在接收到所述基站发送的释放所述时频资源的指示信息时，停止使用所述时频资源传输所述车辆通信消息。
在该技术方案中，一方面，终端在确定车辆通信消息的持续时长达到预定时长时，可以停止使用基站分配的时频资源，此时基站也根据车辆通信消息的持续时长确定达到了预定时长，可以释放该时频资源；另一方面，基站可以主动确定是否需要释放掉分配给终端的时频资源，若需要释放掉分配给终端的时频资源，则向终端发送相应的指示信息。
根据本发明的第四方面，还提出了一种用于车辆通信的资源调度装置，包括：分配单元，用于向终端分配在副链路上进行半静态调度的配置参数；发送单元，用于将所述配置参数发送至所述终端，并用于向所述终端发送物理下行控制信息，以使所述终端基于所述配置参数和所述物理下行控制信息确定用于周期性传输车辆通信消息的时频资源。
在该技术方案中，基站通过向终端分配在副链路上进行半静态调度的配置参数，以使终端根据配置参数确定周期性传输车辆通信消息的时频资源，使得终端在进行V2V业务时，基站能够采用半静态调度的机制来向终端配置时频资源，实现了“一次分配、多次使用”的目的，进而能够降低对PDCCH的开销，以使基站将更多的资源用于调度其他的终端，提高了资源利用效率，解决了相关技术中采用半静态调度机制而导致资源利用效率较低的问题。
在上述技术方案中，优选地，所述分配单元具体用于：
根据已获知的所述终端进行的车辆通信业务的消息特征向所述终端分配所述配置参数；或
接收所述终端发送的半静态调度的配置请求，根据所述配置请求中包含的终端进行的车辆通信业务的消息特征向所述终端分配所述配置参数。
在该技术方案中，一方面基站可以根据事先已获知的消息特征来主动 向终端分配配置参数；另一方面，终端也可以向基站发送半静态调度的配置请求，基站在接收到该配置请求时向终端分配配置参数。
其中，所述车辆通信业务的消息特征包括：车辆通信消息是否为周期性消息、车辆通信消息的类型、车辆通信消息的发送频率、车辆通信消息的数据大小和车辆通信消息的持续时长。
在上述任一技术方案中，优选地，所述分配单元还用于：
在需要调整向所述终端分配的所述配置参数时，向所述终端重新分配所述配置参数，并将重新分配的所述配置参数发送至所述终端；或
接收所述终端发送的半静态调度的重配置请求，根据所述重配置请求重新为所述终端分配的所述配置参数，并将重新分配的所述配置参数发送至所述终端。
在该技术方案中，一方面，若基站需要调整向终端分配的配置参数，则可以主动将重新分配的配置参数发送至终端；另一方面，终端也可以向基站发送重配置请求(如终端进行的V2V业务的消息特征发生了变化)，基站在接收到该重配置请求时重新向终端分配配置参数。
在上述任一技术方案中，优选地，还包括：
判断单元，用于在所述分配单元向所述终端分配所述配置参数之前，根据所述终端进行的车辆通信业务的消息特征，判断是否准许所述终端在副链路上使用半静态调度机制；
所述分配单元具体用于，在所述判断单元判定准许所述终端在副链路上使用半静态调度机制时，执行向所述终端分配所述配置参数的操作。
在该技术方案中，通过判断是否准许终端在副链路上使用半静态调度机制，可以准确地确定出能够进行半静态调度的终端。具体来说，如终端进行的车辆通信业务的消息特征表明车辆通信消息不是周期性消息，则确定不准许该终端在副链路上使用半静态调度机制；再如若终端进行的车辆通信业务的消息特征表明车辆通信消息是周期性消息且消息的大小低于一定阈值，则确定准许该终端在副链路上使用半静态调度机制。
在上述任一技术方案中，优选地，还包括：
资源释放单元，用于在所述车辆通信消息的持续时长达到预定时长时， 释放所述时频资源；或
处理单元，用于向所述终端发送释放所述时频资源的指示信息，并释放所述时频资源，所述指示信息用于指示所述终端停止使用所述时频资源传输所述车辆通信消息。
在该技术方案中，一方面，终端在确定车辆通信消息的持续时长达到预定时长时，可以停止使用基站分配的时频资源，此时基站根据车辆通信消息的持续时长确定达到了预定时长，可以释放该时频资源；另一方面，基站可以主动确定是否需要释放掉分配给终端的时频资源，若需要释放掉分配给终端的时频资源，则向终端发送相应的指示信息。
根据本发明的第五方面，还提出了一种终端，包括通信总线、输入装置、输出装置、存储器以及处理器，其中：
所述通信总线，用于实现所述输入装置、输出装置、存储器以及处理器之间的连接通信；
所述输入装置，用于获取基站分配的在副链路上进行半静态调度的配置参数；
所述输出装置，用于传输车辆通信消息；
所述存储器中存储一组程序代码，且所述终端调用所述存储器中存储的程序代码，用于执行以下操作：
所述输入装置获取基站分配的在副链路上进行半静态调度的配置参数；
所述处理器根据所述配置参数，确定用于周期性传输车辆通信消息的时频资源；
所述输出装置基于所述时频资源，周期性地传输所述车辆通信消息。
可选的，所述输入装置获取基站分配的在副链路上进行半静态调度的配置参数的步骤，具体包括：
所述输入装置接收所述基站根据终端进行的车辆通信业务的消息特征分配的配置参数；或
所述输出装置向所述基站发送半静态调度的配置请求，所述输入装置接收所述基站根据所述配置请求中包含的终端进行的车辆通信业务的消息特征分配的配置参数。
可选的，所述车辆通信业务的消息特征包括：
车辆通信消息是否为周期性消息、车辆通信消息的类型、车辆通信消息的发送频率、车辆通信消息的数据大小和车辆通信消息的持续时长。
可选的，所述输入装置接收所述基站重新分配的所述配置参数；或所述输出装置向所述基站发送半静态调度的重配置请求，所述输入装置接收所述基站根据所述重配置请求重新向所述终端分配的所述配置参数；
所述处理器根据所述基站重新分配的所述配置参数，重新确定用于周期性传输所述车辆通信消息的时频资源，所述输出装置基于重新确定的时频资源周期性地传输所述车辆通信消息。
可选的，所述处理器根据所述配置参数，确定用于周期性传输车辆通信消息的时频资源的步骤，具体包括：
所述处理器监听所述基站发送的物理下行控制信息，并根据所述配置参数中包含的终端进行副链路通信的RNTI，解调出所述时频资源；以及
所述处理器根据所述配置参数中包含的向所述终端分配的半静态调度周期，确定用于传输所述车辆通信消息的时频资源的使用周期。
可选的，还包括：
所述输出装置在所述车辆通信消息的持续时长达到预定时长时，停止使用所述时频资源传输所述车辆通信消息；或
所述输入装置在接收到所述基站发送的释放所述时频资源的指示信息时，所述输出装置停止使用所述时频资源传输所述车辆通信消息。
根据本发明的第六方面，还提出了一种基站，包括通信总线、输入装置、输出装置、存储器以及处理器，其中：
所述通信总线，用于实现所述输入装置、输出装置、存储器以及处理器之间的连接通信；
所述输出装置，用于向终端发送配置参数以及物理下行控制消息；
所述存储器中存储一组程序代码，且所述基站调用所述存储器中存储的程序代码，用于执行以下操作：
所述处理器向终端分配在副链路上进行半静态调度的配置参数；
所述输出装置将所述配置参数发送至所述终端；
所述输出装置向所述终端发送物理下行控制信息，以使所述终端基于所述配置参数和所述物理下行控制信息确定用于周期性传输车辆通信消息的时频资源。
可选的，所述处理器向终端分配在副链路上进行半静态调度的配置参数的步骤，具体包括：
所述处理器根据已获知的所述终端进行的车辆通信业务的消息特征向所述终端分配所述配置参数；或
所述输入装置接收所述终端发送的半静态调度的配置请求，所述处理器根据所述配置请求中包含的终端进行的车辆通信业务的消息特征向所述终端分配所述配置参数。
可选的，所述处理器在需要调整向所述终端分配的所述配置参数时，向所述终端重新分配所述配置参数，所述输出装置将重新分配的所述配置参数发送至所述终端；或
所述输入装置接收所述终端发送的半静态调度的重配置请求，所述处理器根据所述重配置请求重新为所述终端分配的所述配置参数，所述输出装置将重新分配的所述配置参数发送至所述终端。
可选的，所述处理器在所述向终端分配在副链路上进行半静态调度的配置参数的步骤之前，还执行以下操作：
所述处理器根据所述终端进行的车辆通信业务的消息特征，判断是否准许所述终端在副链路上使用半静态调度机制；
若判定准许所述终端在副链路上使用半静态调度机制，则所述处理器执行所述向终端分配在副链路上进行半静态调度的配置参数的步骤。
可选的，所述处理器在所述车辆通信消息的持续时长达到预定时长时，释放所述时频资源；或
所述输出装置向所述终端发送释放所述时频资源的指示信息，所述处理器释放所述时频资源，所述指示信息用于指示所述终端停止使用所述时频资源传输所述车辆通信消息。
通过以上技术方案，使得终端在进行V2V业务时，基站能够采用半静态调度的机制来向终端配置时频资源，进而可以降低对PDCCH的开销， 以使基站将更多的资源用于调度其他的终端，提高了资源利用效率。
附图说明
图1示出了通过PC5接口来实现V2V消息传输的示意图；
图2示出了根据本发明的一个实施例的用于车辆通信的资源调度方法的示意流程图；
图3示出了根据本发明的一个实施例的用于车辆通信的资源调度装置的示意框图；
图4示出了根据本发明的实施例的终端的示意框图；
图5示出了根据本发明的另一个实施例的用于车辆通信的资源调度方法的示意流程图；
图6示出了根据本发明的另一个实施例的用于车辆通信的资源调度装置的示意框图；
图7示出了根据本发明的实施例的基站的示意框图；
图8示出了根据本发明的实施例的半静态调度机制的初始化阶段的处理流程示意图；
图9示出了根据本发明的实施例的半静态调度机制的激活阶段的处理流程示意图；
图10示出了根据本发明的实施例的半静态调度机制的失效阶段的处理流程示意图；
图11示出了根据本发明的实施例的半静态调度机制的总体处理流程示意图。
具体实施方式
为了能够更清楚地理解本发明的上述目的、特征和优点，下面结合附图和具体实施方式对本发明进行进一步的详细描述。需要说明的是，在不冲突的情况下，本申请的实施例及实施例中的特征可以相互组合。
在下面的描述中阐述了很多具体细节以便于充分理解本发明，但是，本发明还可以采用其他不同于在此描述的其他方式来实施，因此，本发明 的保护范围并不受下面公开的具体实施例的限制。
图2示出了根据本发明的一个实施例的用于车辆通信的资源调度方法的示意流程图。
如图2所示，根据本发明的一个实施例的用于车辆通信的资源调度方法，包括：
步骤202，获取基站分配的在副链路上进行半静态调度的配置参数；
步骤204，根据所述配置参数，确定用于周期性传输车辆通信消息的时频资源；
步骤206，基于所述时频资源，周期性地传输所述车辆通信消息。
在该技术方案中，终端通过获取基站分配的在副链路上进行半静态调度的配置参数，以根据配置参数确定周期性传输车辆通信消息的时频资源，并根据确定的时频资源周期性地传输车辆通信消息，使得终端在进行V2V业务时，基站能够采用半静态调度的机制来向终端配置时频资源，实现了“一次分配、多次使用”的目的，进而能够降低对PDCCH的开销，以使基站将更多的资源用于调度其他的终端，提高了资源利用效率，解决了相关技术中采用半静态调度机制而导致资源利用效率较低的问题。
在上述技术方案中，优选地，获取基站分配的在副链路上进行半静态调度的配置参数的步骤，具体包括：
接收所述基站根据终端进行的车辆通信业务的消息特征分配的配置参数；或
向所述基站发送半静态调度的配置请求，并接收所述基站根据所述配置请求中包含的终端进行的车辆通信业务的消息特征分配的配置参数。
在该技术方案中，一方面基站可以根据事先已获知的消息特征来主动向终端分配配置参数；另一方面，终端也可以向基站发送半静态调度的配置请求，以触发基站向终端分配配置参数。
其中，所述车辆通信业务的消息特征包括：车辆通信消息是否为周期性消息、车辆通信消息的类型、车辆通信消息的发送频率、车辆通信消息的数据大小和车辆通信消息的持续时长。
在上述任一技术方案中，优选地，还包括：
接收所述基站重新分配的所述配置参数；或向所述基站发送半静态调度的重配置请求，并接收所述基站根据所述重配置请求重新向所述终端分配的所述配置参数；
根据所述基站重新分配的所述配置参数，重新确定用于周期性传输所述车辆通信消息的时频资源，并基于重新确定的时频资源周期性地传输所述车辆通信消息。
在该技术方案中，一方面，若基站需要调整向终端分配的配置参数，则可以主动将重新分配的配置参数发送至终端；另一方面，终端也可以向基站发送重配置请求(如终端进行的V2V业务的消息特征发生了变化)，以触发基站重新向终端分配配置参数。
在上述任一技术方案中，优选地，根据所述配置参数，确定用于周期性传输车辆通信消息的时频资源的步骤，具体包括：
监听所述基站发送的物理下行控制信息，并根据所述配置参数中包含的终端进行副链路通信的RNTI，解调出所述时频资源；以及
根据所述配置参数中包含的向所述终端分配的半静态调度周期，确定用于传输所述车辆通信消息的时频资源的使用周期。
具体地，终端可以通过监听PDCCH或者e-PDCCH(Enhanced PDCCH，增强的物理下行控制信道)来监听基站发送的物理下行控制信息。
在上述任一技术方案中，优选地，还包括：
在所述车辆通信消息的持续时长达到预定时长时，停止使用所述时频资源传输所述车辆通信消息；或
在接收到所述基站发送的释放所述时频资源的指示信息时，停止使用所述时频资源传输所述车辆通信消息。
在该技术方案中，一方面，终端在确定车辆通信消息的持续时长达到预定时长时，可以停止使用基站分配的时频资源，此时基站也根据车辆通信消息的持续时长确定达到了预定时长，可以释放该时频资源；另一方面，基站可以主动确定是否需要释放掉分配给终端的时频资源，若需要释放掉分配给终端的时频资源，则向终端发送相应的指示信息。
图3示出了根据本发明的一个实施例的用于车辆通信的资源调度装置 的示意框图。
如图3所示，根据本发明的一个实施例的用于车辆通信的资源调度装置300，包括：获取单元302、确定单元304和传输单元306。
其中，获取单元302，用于获取基站分配的在副链路上进行半静态调度的配置参数；确定单元304，用于根据所述配置参数，确定用于周期性传输车辆通信消息的时频资源；传输单元306，用于基于所述时频资源，周期性地传输所述车辆通信消息。
在该技术方案中，终端通过获取基站分配的在副链路上进行半静态调度的配置参数，以根据配置参数确定周期性传输车辆通信消息的时频资源，并根据确定的时频资源周期性地传输车辆通信消息，使得终端在进行V2V业务时，基站能够采用半静态调度的机制来向终端配置时频资源，实现了“一次分配、多次使用”的目的，进而能够降低对PDCCH的开销，以使基站将更多的资源用于调度其他的终端，提高了资源利用效率，解决了相关技术中采用半静态调度机制而导致资源利用效率较低的问题。
在上述技术方案中，优选地，所述获取单元302包括：
第一接收单元3022，用于接收所述基站根据终端进行的车辆通信业务的消息特征分配的配置参数；或
第一交互单元3024，用于向所述基站发送半静态调度的配置请求，并接收所述基站根据所述配置请求中包含的终端进行的车辆通信业务的消息特征分配的配置参数。
在该技术方案中，一方面基站可以根据事先已获知的消息特征来主动向终端分配配置参数；另一方面，终端也可以向基站发送半静态调度的配置请求，以触发基站向终端分配配置参数。
其中，所述车辆通信业务的消息特征包括：车辆通信消息是否为周期性消息、车辆通信消息的类型、车辆通信消息的发送频率、车辆通信消息的数据大小和车辆通信消息的持续时长。
在上述任一技术方案中，优选地，还包括：第二接收单元308，用于接收所述基站重新分配的所述配置参数；或第二交互单元310，用于向所述基站发送半静态调度的重配置请求，并接收所述基站根据所述重配置请 求重新向所述终端分配的所述配置参数；
所述确定单元304还用于，根据所述基站重新分配的所述配置参数，重新确定用于周期性传输所述车辆通信消息的时频资源；
所述传输单元306还用于，基于所述确定单元304重新确定的时频资源周期性地传输所述车辆通信消息。
在该技术方案中，一方面，若基站需要调整向终端分配的配置参数，则可以主动将重新分配的配置参数发送至终端；另一方面，终端也可以向基站发送重配置请求(如终端进行的V2V业务的消息特征发生了变化)，以触发基站重新向终端分配配置参数。
在上述任一技术方案中，优选地，所述确定单元304具体用于：
监听所述基站发送的物理下行控制信息，并根据所述配置参数中包含的终端进行副链路通信的RNTI，解调出所述时频资源；以及
根据所述配置参数中包含的向所述终端分配的半静态调度周期，确定用于传输所述车辆通信消息的时频资源的使用周期。
具体地，终端可以通过监听PDCCH或者e-PDCCH来监听基站发送的物理下行控制信息。
在上述任一技术方案中，优选地，所述传输单元306还用于：
在所述车辆通信消息的持续时长达到预定时长时，停止使用所述时频资源传输所述车辆通信消息；或
在接收到所述基站发送的释放所述时频资源的指示信息时，停止使用所述时频资源传输所述车辆通信消息。
在该技术方案中，一方面，终端在确定车辆通信消息的持续时长达到预定时长时，可以停止使用基站分配的时频资源，此时基站也根据车辆通信消息的持续时长确定达到了预定时长，可以释放该时频资源；另一方面，基站可以主动确定是否需要释放掉分配给终端的时频资源，若需要释放掉分配给终端的时频资源，则向终端发送相应的指示信息。
图4示出了根据本发明的实施例的终端的示意框图。如图4所示，根据本发明的实施例的终端400，包括通信总线402、输入装置403、输出装置404、存储器405以及处理器401，其中：
所述通信总线402，用于实现所述输入装置403、输出装置404、存储器405以及处理器401之间的连接通信；
所述输入装置403，用于获取基站分配的在副链路上进行半静态调度的配置参数；
所述输出装置404，用于传输车辆通信消息；
所述存储器405中存储一组程序代码，且所述终端调用所述存储器405中存储的程序代码，用于执行以下操作：
所述输入装置403获取基站分配的在副链路上进行半静态调度的配置参数；
所述处理器401根据所述配置参数，确定用于周期性传输车辆通信消息的时频资源；
所述输出装置404基于所述时频资源，周期性地传输所述车辆通信消息。
可选的，所述输入装置403获取基站分配的在副链路上进行半静态调度的配置参数的步骤，具体包括：
所述输入装置403接收所述基站根据终端进行的车辆通信业务的消息特征分配的配置参数；或
所述输出装置404向所述基站发送半静态调度的配置请求，所述输入装置403接收所述基站根据所述配置请求中包含的终端进行的车辆通信业务的消息特征分配的配置参数。
可选的，所述车辆通信业务的消息特征包括：
车辆通信消息是否为周期性消息、车辆通信消息的类型、车辆通信消息的发送频率、车辆通信消息的数据大小和车辆通信消息的持续时长。
可选的，所述输入装置403接收所述基站重新分配的所述配置参数；或所述输出装置404向所述基站发送半静态调度的重配置请求，所述输入装置403接收所述基站根据所述重配置请求重新向所述终端分配的所述配置参数；
所述处理器401根据所述基站重新分配的所述配置参数，重新确定用于周期性传输所述车辆通信消息的时频资源，所述输出装置404基于重新 确定的时频资源周期性地传输所述车辆通信消息。
可选的，所述处理器401根据所述配置参数，确定用于周期性传输车辆通信消息的时频资源的步骤，具体包括：
所述处理器401监听所述基站发送的物理下行控制信息，并根据所述配置参数中包含的终端进行副链路通信的RNTI，解调出所述时频资源；以及
所述处理器401根据所述配置参数中包含的向所述终端分配的半静态调度周期，确定用于传输所述车辆通信消息的时频资源的使用周期。
可选的，所述输出装置404在所述车辆通信消息的持续时长达到预定时长时，停止使用所述时频资源传输所述车辆通信消息；或
所述输入装置403在接收到所述基站发送的释放所述时频资源的指示信息时，所述输出装置404停止使用所述时频资源传输所述车辆通信消息。
图5示出了根据本发明的另一个实施例的用于车辆通信的资源调度方法的示意流程图。
如图5所示，根据本发明的另一个实施例的用于车辆通信的资源调度方法，包括：
步骤502，向终端分配在副链路上进行半静态调度的配置参数；
步骤504，将所述配置参数发送至所述终端；
步骤506，向所述终端发送物理下行控制信息，以使所述终端基于所述配置参数和所述物理下行控制信息确定用于周期性传输车辆通信消息的时频资源。
在该技术方案中，基站通过向终端分配在副链路上进行半静态调度的配置参数，以使终端根据配置参数确定周期性传输车辆通信消息的时频资源，使得终端在进行V2V业务时，基站能够采用半静态调度的机制来向终端配置时频资源，实现了“一次分配、多次使用”的目的，进而能够降低对PDCCH的开销，以使基站将更多的资源用于调度其他的终端，提高了资源利用效率，解决了相关技术中采用半静态调度机制而导致资源利用效率较低的问题。
在上述技术方案中，优选地，向终端分配在副链路上进行半静态调度 的配置参数的步骤，具体包括：
根据已获知的所述终端进行的车辆通信业务的消息特征向所述终端分配所述配置参数；或
接收所述终端发送的半静态调度的配置请求，根据所述配置请求中包含的终端进行的车辆通信业务的消息特征向所述终端分配所述配置参数。
在该技术方案中，一方面基站可以根据事先已获知的消息特征来主动向终端分配配置参数；另一方面，终端也可以向基站发送半静态调度的配置请求，基站在接收到该配置请求时向终端分配配置参数。
其中，所述车辆通信业务的消息特征包括：车辆通信消息是否为周期性消息、车辆通信消息的类型、车辆通信消息的发送频率、车辆通信消息的数据大小和车辆通信消息的持续时长。
在上述任一技术方案中，优选地，还包括：
在需要调整向所述终端分配的所述配置参数时，向所述终端重新分配所述配置参数，并将重新分配的所述配置参数发送至所述终端；或
接收所述终端发送的半静态调度的重配置请求，根据所述重配置请求重新为所述终端分配的所述配置参数，并将重新分配的所述配置参数发送至所述终端。
在该技术方案中，一方面，若基站需要调整向终端分配的配置参数，则可以主动将重新分配的配置参数发送至终端；另一方面，终端也可以向基站发送重配置请求(如终端进行的V2V业务的消息特征发生了变化)，基站在接收到该重配置请求时重新向终端分配配置参数。
在上述任一技术方案中，优选地，在所述向终端分配在副链路上进行半静态调度的配置参数的步骤之前，还包括：
根据所述终端进行的车辆通信业务的消息特征，判断是否准许所述终端在副链路上使用半静态调度机制；
若判定准许所述终端在副链路上使用半静态调度机制，则执行所述向终端分配在副链路上进行半静态调度的配置参数的步骤。
在该技术方案中，通过判断是否准许终端在副链路上使用半静态调度机制，可以准确地确定出能够进行半静态调度的终端。具体来说，如终端 进行的车辆通信业务的消息特征表明车辆通信消息不是周期性消息，则确定不准许该终端在副链路上使用半静态调度机制；再如若终端进行的车辆通信业务的消息特征表明车辆通信消息是周期性消息且消息的大小低于一定阈值，则确定准许该终端在副链路上使用半静态调度机制。
在上述任一技术方案中，优选地，还包括：
在所述车辆通信消息的持续时长达到预定时长时，释放所述时频资源；或
向所述终端发送释放所述时频资源的指示信息，并释放所述时频资源，所述指示信息用于指示所述终端停止使用所述时频资源传输所述车辆通信消息。
在该技术方案中，一方面，终端在确定车辆通信消息的持续时长达到预定时长时，可以停止使用基站分配的时频资源，此时基站根据车辆通信消息的持续时长确定达到了预定时长，可以释放该时频资源；另一方面，基站可以主动确定是否需要释放掉分配给终端的时频资源，若需要释放掉分配给终端的时频资源，则向终端发送相应的指示信息。
图6示出了根据本发明的另一个实施例的用于车辆通信的资源调度装置的示意框图。
如图6所示，根据本发明的另一个实施例的用于车辆通信的资源调度装置600，包括：分配单元602和发送单元604。
其中，分配单元602，用于向终端分配在副链路上进行半静态调度的配置参数；发送单元604，用于将所述配置参数发送至所述终端，并用于向所述终端发送物理下行控制信息，以使所述终端基于所述配置参数和所述物理下行控制信息确定用于周期性传输车辆通信消息的时频资源。
在该技术方案中，基站通过向终端分配在副链路上进行半静态调度的配置参数，以使终端根据配置参数确定周期性传输车辆通信消息的时频资源，使得终端在进行V2V业务时，基站能够采用半静态调度的机制来向终端配置时频资源，实现了“一次分配、多次使用”的目的，进而能够降低对PDCCH的开销，以使基站将更多的资源用于调度其他的终端，提高了资源利用效率，解决了相关技术中采用半静态调度机制而导致资源利用效 率较低的问题。
在上述技术方案中，优选地，所述分配单元602具体用于：
根据已获知的所述终端进行的车辆通信业务的消息特征向所述终端分配所述配置参数；或
接收所述终端发送的半静态调度的配置请求，根据所述配置请求中包含的终端进行的车辆通信业务的消息特征向所述终端分配所述配置参数。
在该技术方案中，一方面基站可以根据事先已获知的消息特征来主动向终端分配配置参数；另一方面，终端也可以向基站发送半静态调度的配置请求，基站在接收到该配置请求时向终端分配配置参数。
其中，所述车辆通信业务的消息特征包括：车辆通信消息是否为周期性消息、车辆通信消息的类型、车辆通信消息的发送频率、车辆通信消息的数据大小和车辆通信消息的持续时长。
在上述任一技术方案中，优选地，所述分配单元602还用于：
在需要调整向所述终端分配的所述配置参数时，向所述终端重新分配所述配置参数，并将重新分配的所述配置参数发送至所述终端；或
接收所述终端发送的半静态调度的重配置请求，根据所述重配置请求重新为所述终端分配的所述配置参数，并将重新分配的所述配置参数发送至所述终端。
在该技术方案中，一方面，若基站需要调整向终端分配的配置参数，则可以主动将重新分配的配置参数发送至终端；另一方面，终端也可以向基站发送重配置请求(如终端进行的V2V业务的消息特征发生了变化)，基站在接收到该重配置请求时重新向终端分配配置参数。
在上述任一技术方案中，优选地，还包括：
判断单元606，用于在所述分配单元602向所述终端分配所述配置参数之前，根据所述终端进行的车辆通信业务的消息特征，判断是否准许所述终端在副链路上使用半静态调度机制；
所述分配单元602具体用于，在所述判断单元606判定准许所述终端在副链路上使用半静态调度机制时，执行向所述终端分配所述配置参数的操作。
在该技术方案中，通过判断是否准许终端在副链路上使用半静态调度机制，可以准确地确定出能够进行半静态调度的终端。具体来说，如终端进行的车辆通信业务的消息特征表明车辆通信消息不是周期性消息，则确定不准许该终端在副链路上使用半静态调度机制；再如若终端进行的车辆通信业务的消息特征表明车辆通信消息是周期性消息且消息的大小低于一定阈值，则确定准许该终端在副链路上使用半静态调度机制。
在上述任一技术方案中，优选地，还包括：
资源释放单元608，用于在所述车辆通信消息的持续时长达到预定时长时，释放所述时频资源；或
处理单元610，用于向所述终端发送释放所述时频资源的指示信息，并释放所述时频资源，所述指示信息用于指示所述终端停止使用所述时频资源传输所述车辆通信消息。
在该技术方案中，一方面，终端在确定车辆通信消息的持续时长达到预定时长时，可以停止使用基站分配的时频资源，此时基站根据车辆通信消息的持续时长确定达到了预定时长，可以释放该时频资源；另一方面，基站可以主动确定是否需要释放掉分配给终端的时频资源，若需要释放掉分配给终端的时频资源，则向终端发送相应的指示信息。
图7示出了根据本发明的实施例的基站的示意框图。如图7所示，根据本发明的实施例的基站700，包括通信总线702、输入装置703、输出装置704、存储器705以及处理器701，其中：
所述通信总线702，用于实现所述输入装置703、输出装置704、存储器705以及处理器701之间的连接通信；
所述输出装置704，用于向终端发送配置参数以及物理下行控制消息；
所述存储器705中存储一组程序代码，且所述基站调用所述存储器705中存储的程序代码，用于执行以下操作：
所述处理器701向终端分配在副链路上进行半静态调度的配置参数；
所述输出装置704将所述配置参数发送至所述终端；
所述输出装置704向所述终端发送物理下行控制信息，以使所述终端基于所述配置参数和所述物理下行控制信息确定用于周期性传输车辆通信 消息的时频资源。
可选的，所述处理器701向终端分配在副链路上进行半静态调度的配置参数的步骤，具体包括：
所述处理器701根据已获知的所述终端进行的车辆通信业务的消息特征向所述终端分配所述配置参数；或
所述输入装置703接收所述终端发送的半静态调度的配置请求，所述处理器701根据所述配置请求中包含的终端进行的车辆通信业务的消息特征向所述终端分配所述配置参数。
可选的，所述处理器701在需要调整向所述终端分配的所述配置参数时，向所述终端重新分配所述配置参数，所述输出装置704将重新分配的所述配置参数发送至所述终端；或
所述输入装置703接收所述终端发送的半静态调度的重配置请求，所述处理器701根据所述重配置请求重新为所述终端分配的所述配置参数，所述输出装置704将重新分配的所述配置参数发送至所述终端。
可选的，所述处理器701在所述向终端分配在副链路上进行半静态调度的配置参数的步骤之前，还执行以下操作：
所述处理器701根据所述终端进行的车辆通信业务的消息特征，判断是否准许所述终端在副链路上使用半静态调度机制；
若判定准许所述终端在副链路上使用半静态调度机制，则所述处理器701执行所述向终端分配在副链路上进行半静态调度的配置参数的步骤。
可选的，所述处理器701在所述车辆通信消息的持续时长达到预定时长时，释放所述时频资源；或
所述输出装置704向所述终端发送释放所述时频资源的指示信息，所述处理器701释放所述时频资源，所述指示信息用于指示所述终端停止使用所述时频资源传输所述车辆通信消息。
综上所述，由于目前Rel-13D2D调度模式的资源分配方法只有动态调度机制，尚未引入和定义半静态调度机制的实现标准，同时考虑到将半静态资源调度机制引入到某些V2V业务的消息传输存在着较大的潜在增益。因此，本发明提出了在基于eNB调度模式的资源分配方法中引入半静态资 源调度的机制，使得半静态调度资源是“一次分配，多次使用”，进而可以降低对应的PDCCH的开销，以将更多的资源用于调度额外的UE，从而有利于提升网络容量。并且本发明在讨论UE端、eNB端行为的基础上制定了相关的实现信令及流程。以下详细进行说明：
为便于说明，以下将半静态调度机制统一简称为SPS(Semi-Persistent Scheduling，半静态调度)机制。并且为了和现有的上行链路(Uplink)和下行链路(Downlink)资源分配的半静态调度机制进行区分，以下将D2D副链路(Sidelink)资源分配的半静态调度机制统一简称为SL SPS机制。
本发明的技术方案主要分为三大阶段来实现：
一、初始化阶段：
在该阶段内，UE获取SL SPS的相关配置参数。其中，UE的SL SPS配置初始化可以是UE主动上报请求触发，也可以是eNB直接下发。
1、若UE的SL SPS配置初始化是UE主动上报请求触发，则需要UE通过RRC(Radio Resource Control，无线资源控制)信令上报自己的SL SPS配置请求。RRC信令中包含UE进行的V2V业务的消息特征，例如是否是周期性消息，V2V消息内容类型，V2V消息的发送频率f、V2V消息的大小s、V2V消息的持续时间t等。
2、若UE的SL SPS配置参数是eNB直接下发的，则不需要UE通过显式的信令上报eNB，eNB直接下发对UE的SL SPS的相关配置参数。当然，eNB能实施该项操作的前提是eNB已经知道UE目前使用动态调度机制，以及UE进行的V2V业务的消息特征。
3、不管是UE主动上报请求触发SL SPS的配置初始化，还是eNB直接下发SL SPS的配置参数，都需要eNB在发送SL SPS的配置参数之前，进行准许控制。
其中，eNB进行准许控制具体为eNB基于UE进行的V2V业务的一个或者多个消息特征联合判断该UE是否适合使用SL SPS调度，以及是否有可用的时频资源用于SL SPS调度。例如，若UE进行的V2V业务发送的是非周期性消息，则不准许该UE使用半静态调度机制；若UE进行的是周期性消息且消息的大小s低于一定阈值，并且有可用的时频资源用于SL  SPS调度时，则准许该UE使用半静态调度机制。若准许控制的结果是同意该UE使用半静态调度机制，则eNB通过RRC信令下发对UE的SL SPS配置参数，RRC信令中包含UE进行的V2V业务的SPS配置参数，例如SL SPS周期T，UE进行SL SPS的唯一标识SPS SL-RNTI。
4、特别地，SL SPS也可以进行重配置。触发SL SPS重配置的原因可以来自UE端，也可以来自eNB端。例如UE在进行该项V2V业务一段时间后某些消息特征(发送频率、消息大小等)发生了改变，再如eNB需要改变使用SL SPS的时频资源位置等等。
初始化阶段的流程可以如图8所示：
对于方式一，包括：
步骤802，UE/源车辆通过RRC信令向eNB发送SL SPS配置/重配置请求；
步骤804，eNB进行SL SPS准许控制。
步骤806，eNB将SL SPS的配置/重配置参数通过RRC信令发送至UE/源车辆。
对于方式二，包括：
步骤808，eNB进行SL SPS准许控制。
步骤810，eNB将SL SPS的配置/重配置参数通过RRC信令发送至UE/源车辆。
二、激活阶段
在该阶段中，UE根据获取到的SPS配置参数，开始周期性的V2V消息发送。具体地：
1、UE监听自己的PDCCH/e-PDCCH，通过eNB为自己分配的SPS SL-RNTI解调出可用的时频资源(即SPS SL grant)的位置。
2、UE在解调出的时频资源位置上发送V2V消息。
3、此后，UE基于SL SPS周期T开始周期性的使用时频资源来发送V2V消息。
激活阶段的流程可以如图9所示，包括：
步骤902，eNB向UE/源车辆分配SPS SL grant。
步骤904，UE/源车辆监听PDCCH/e-PDCCH，基于SPS SL-RNIT解调出可用时频资源的位置。
步骤906，UE/源车辆基于解调出的时频资源的位置，与UE/目标车辆进行周期性的V2V消息发送。
三、失效阶段
在该阶段内，UE的SL SPS配置释放，UE停止周期性的V2V消息发送。UE的SL SPS配置失效可以通过以下两种方式：
方式一：UE自行判断。具体地，V2V消息的持续时间t到达时，UE停止使用SPS SL-RNTI解调出的时频资源。在这种方式下，因为在初始化阶段eNB获取了UE的V2V消息的持续时间t，所以UE也不必再通知eNB，eNB在时间达到的同时也会释放用于SL SPS的时频资源。
方式二：eNB显式地通知UE。具体地，eNB可以通过RRC信令发出release SL SPS配置的指令，这种方式可以提前终止V2V消息的发送。
失效阶段的流程可以如图10所示：
对于方式一，包括：
步骤1002，在V2V消息的持续时间t到达时，UE/源车辆终止该V2V；
步骤1004，eNB释放掉向该UE/源车辆分配的时频资源。
对于方式二，包括：
步骤1006，在V2V消息的持续时间t到达前，eNB通过RRC信令向UE/源车辆发送SL SPS配置释放指令。
步骤1008，UE/源车辆终止该V2V。
以上三个阶段的总体处理流程如图11所示，包括：
步骤1102，UE/源车辆通过RRC信令向eNB发送SL SPS配置/重配置请求。其中，该步骤为UE/源车辆向eNB上报请求触发eNB来进行配置的步骤，若eNB主动向UE下发SL SPS的配置参数时没有该步骤。
步骤1104，eNB进行SL SPS准许控制。
步骤1106，eNB将SL SPS的配置/重配置参数通过RRC信令发送至UE/源车辆。
步骤1108，eNB向UE/源车辆分配SPS SL grant。
步骤1110，UE/源车辆监听PDCCH/e-PDCCH，基于SPS SL-RNIT解调出可用时频资源的位置。
步骤1112，UE/源车辆基于解调出的时频资源的位置，与UE/目标车辆进行周期性的V2V消息发送。
步骤1114，eNB通过RRC信令向UE/源车辆发送SL SPS配置释放指令。该步骤为eNB向UE/源车辆发送SL SPS配置释放指令的步骤，即在V2V消息的持续时间t到达前，eNB向UE/源车辆发送SL SPS配置释放指令，若在V2V消息的持续时间t到达时，则eNB无需向UE/源车辆发送。
步骤1116，UE/源车辆终止该V2V。
本发明的上述技术方案将半静态资源调度机制引入基于PC5/D2D的V2V消息传输，适合数据包小、大小基本不变的周期性V2V业务，有利于提升车联网的容量。
以上结合附图详细说明了本发明的技术方案，本发明提出了一种新的用于车辆通信的资源调度方案，使得终端在进行V2V业务时，基站能够采用半静态调度的机制来向终端配置时频资源，进而可以降低对PDCCH的开销，以使基站将更多的资源用于调度其他的终端，提高了资源利用效率。
以上所述仅为本发明的优选实施例而已，并不用于限制本发明，对于本领域的技术人员来说，本发明可以有各种更改和变化。凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。

Claims (33)

  1. 一种用于车辆通信的资源调度方法，其特征在于，包括：
    获取基站分配的在副链路上进行半静态调度的配置参数；
    根据所述配置参数，确定用于周期性传输车辆通信消息的时频资源；
    基于所述时频资源，周期性地传输所述车辆通信消息。
  2. 根据权利要求1所述的用于车辆通信的资源调度方法，其特征在于，获取基站分配的在副链路上进行半静态调度的配置参数的步骤，具体包括：
    接收所述基站根据终端进行的车辆通信业务的消息特征分配的配置参数；或
    向所述基站发送半静态调度的配置请求，并接收所述基站根据所述配置请求中包含的终端进行的车辆通信业务的消息特征分配的配置参数。
  3. 根据权利要求2所述的用于车辆通信的资源调度方法，其特征在于，所述车辆通信业务的消息特征包括：
    车辆通信消息是否为周期性消息、车辆通信消息的类型、车辆通信消息的发送频率、车辆通信消息的数据大小和车辆通信消息的持续时长。
  4. 根据权利要求1所述的用于车辆通信的资源调度方法，其特征在于，还包括：
    接收所述基站重新分配的所述配置参数；或向所述基站发送半静态调度的重配置请求，并接收所述基站根据所述重配置请求重新向所述终端分配的所述配置参数；
    根据所述基站重新分配的所述配置参数，重新确定用于周期性传输所述车辆通信消息的时频资源，并基于重新确定的时频资源周期性地传输所述车辆通信消息。
  5. 根据权利要求1所述的用于车辆通信的资源调度方法，其特征在于，根据所述配置参数，确定用于周期性传输车辆通信消息的时频资源的步骤，具体包括：
    监听所述基站发送的物理下行控制信息，并根据所述配置参数中包含的终端进行副链路通信的RNTI，解调出所述时频资源；以及
    根据所述配置参数中包含的向所述终端分配的半静态调度周期，确定用于传输所述车辆通信消息的时频资源的使用周期。
  6. 根据权利要求1至5中任一项所述的用于车辆通信的资源调度方法，其特征在于，还包括：
    在所述车辆通信消息的持续时长达到预定时长时，停止使用所述时频资源传输所述车辆通信消息；或
    在接收到所述基站发送的释放所述时频资源的指示信息时，停止使用所述时频资源传输所述车辆通信消息。
  7. 一种用于车辆通信的资源调度方法，其特征在于，包括：
    向终端分配在副链路上进行半静态调度的配置参数；
    将所述配置参数发送至所述终端；
    向所述终端发送物理下行控制信息，以使所述终端基于所述配置参数和所述物理下行控制信息确定用于周期性传输车辆通信消息的时频资源。
  8. 根据权利要求7所述的用于车辆通信的资源调度方法，其特征在于，向终端分配在副链路上进行半静态调度的配置参数的步骤，具体包括：
    根据已获知的所述终端进行的车辆通信业务的消息特征向所述终端分配所述配置参数；或
    接收所述终端发送的半静态调度的配置请求，根据所述配置请求中包含的终端进行的车辆通信业务的消息特征向所述终端分配所述配置参数。
  9. 根据权利要求7所述的用于车辆通信的资源调度方法，其特征在于，还包括：
    在需要调整向所述终端分配的所述配置参数时，向所述终端重新分配所述配置参数，并将重新分配的所述配置参数发送至所述终端；或
    接收所述终端发送的半静态调度的重配置请求，根据所述重配置请求重新为所述终端分配的所述配置参数，并将重新分配的所述配置参数发送至所述终端。
  10. 根据权利要求7所述的用于车辆通信的资源调度方法，其特征在于，在所述向终端分配在副链路上进行半静态调度的配置参数的步骤之前，还包括：
    根据所述终端进行的车辆通信业务的消息特征，判断是否准许所述终端在副链路上使用半静态调度机制；
    若判定准许所述终端在副链路上使用半静态调度机制，则执行所述向终端分配在副链路上进行半静态调度的配置参数的步骤。
  11. 根据权利要求7至10中任一项所述的用于车辆通信的资源调度方法，其特征在于，还包括：
    在所述车辆通信消息的持续时长达到预定时长时，释放所述时频资源；或
    向所述终端发送释放所述时频资源的指示信息，并释放所述时频资源，所述指示信息用于指示所述终端停止使用所述时频资源传输所述车辆通信消息。
  12. 一种用于车辆通信的资源调度装置，其特征在于，包括：
    获取单元，用于获取基站分配的在副链路上进行半静态调度的配置参数；
    确定单元，用于根据所述配置参数，确定用于周期性传输车辆通信消息的时频资源；
    传输单元，用于基于所述时频资源，周期性地传输所述车辆通信消息。
  13. 根据权利要求12所述的用于车辆通信的资源调度装置，其特征在于，所述获取单元包括：
    第一接收单元，用于接收所述基站根据终端进行的车辆通信业务的消息特征分配的配置参数；或
    第一交互单元，用于向所述基站发送半静态调度的配置请求，并接收所述基站根据所述配置请求中包含的终端进行的车辆通信业务的消息特征分配的配置参数。
  14. 根据权利要求13所述的用于车辆通信的资源调度装置，其特征在于，所述车辆通信业务的消息特征包括：
    车辆通信消息是否为周期性消息、车辆通信消息的类型、车辆通信消息的发送频率、车辆通信消息的数据大小和车辆通信消息的持续时长。
  15. 根据权利要求12所述的用于车辆通信的资源调度装置，其特征在 于，还包括：第二接收单元，用于接收所述基站重新分配的所述配置参数；或第二交互单元，用于向所述基站发送半静态调度的重配置请求，并接收所述基站根据所述重配置请求重新向所述终端分配的所述配置参数；
    所述确定单元还用于，根据所述基站重新分配的所述配置参数，重新确定用于周期性传输所述车辆通信消息的时频资源；
    所述传输单元还用于，基于所述确定单元重新确定的时频资源周期性地传输所述车辆通信消息。
  16. 根据权利要求12所述的用于车辆通信的资源调度装置，其特征在于，所述确定单元具体用于：
    监听所述基站发送的物理下行控制信息，并根据所述配置参数中包含的终端进行副链路通信的RNTI，解调出所述时频资源；以及
    根据所述配置参数中包含的向所述终端分配的半静态调度周期，确定用于传输所述车辆通信消息的时频资源的使用周期。
  17. 根据权利要求12至16中任一项所述的用于车辆通信的资源调度装置，其特征在于，所述传输单元还用于：
    在所述车辆通信消息的持续时长达到预定时长时，停止使用所述时频资源传输所述车辆通信消息；或
    在接收到所述基站发送的释放所述时频资源的指示信息时，停止使用所述时频资源传输所述车辆通信消息。
  18. 一种用于车辆通信的资源调度装置，其特征在于，包括：
    分配单元，用于向终端分配在副链路上进行半静态调度的配置参数；
    发送单元，用于将所述配置参数发送至所述终端，并用于向所述终端发送物理下行控制信息，以使所述终端基于所述配置参数和所述物理下行控制信息确定用于周期性传输车辆通信消息的时频资源。
  19. 根据权利要求18所述的用于车辆通信的资源调度装置，其特征在于，所述分配单元具体用于：
    根据已获知的所述终端进行的车辆通信业务的消息特征向所述终端分配所述配置参数；或
    接收所述终端发送的半静态调度的配置请求，根据所述配置请求中包 含的终端进行的车辆通信业务的消息特征向所述终端分配所述配置参数。
  20. 根据权利要求18所述的用于车辆通信的资源调度装置，其特征在于，所述分配单元还用于：
    在需要调整向所述终端分配的所述配置参数时，向所述终端重新分配所述配置参数，并将重新分配的所述配置参数发送至所述终端；或
    接收所述终端发送的半静态调度的重配置请求，根据所述重配置请求重新为所述终端分配的所述配置参数，并将重新分配的所述配置参数发送至所述终端。
  21. 根据权利要求18所述的用于车辆通信的资源调度装置，其特征在于，还包括：
    判断单元，用于在所述分配单元向所述终端分配所述配置参数之前，根据所述终端进行的车辆通信业务的消息特征，判断是否准许所述终端在副链路上使用半静态调度机制；
    所述分配单元具体用于，在所述判断单元判定准许所述终端在副链路上使用半静态调度机制时，执行向所述终端分配所述配置参数的操作。
  22. 根据权利要求18至21中任一项所述的用于车辆通信的资源调度装置，其特征在于，还包括：
    资源释放单元，用于在所述车辆通信消息的持续时长达到预定时长时，释放所述时频资源；或
    处理单元，用于向所述终端发送释放所述时频资源的指示信息，并释放所述时频资源，所述指示信息用于指示所述终端停止使用所述时频资源传输所述车辆通信消息。
  23. 一种终端，其特征在于，包括通信总线、输入装置、输出装置、存储器以及处理器，其中：
    所述通信总线，用于实现所述输入装置、输出装置、存储器以及处理器之间的连接通信；
    所述输入装置，用于获取基站分配的在副链路上进行半静态调度的配置参数；
    所述输出装置，用于传输车辆通信消息；
    所述存储器中存储一组程序代码，且所述终端调用所述存储器中存储的程序代码，用于执行以下操作：
    所述输入装置获取基站分配的在副链路上进行半静态调度的配置参数；
    所述处理器根据所述配置参数，确定用于周期性传输车辆通信消息的时频资源；
    所述输出装置基于所述时频资源，周期性地传输所述车辆通信消息。
  24. 根据权利要求23所述的终端，其特征在于，所述输入装置获取基站分配的在副链路上进行半静态调度的配置参数的步骤，具体包括：
    所述输入装置接收所述基站根据终端进行的车辆通信业务的消息特征分配的配置参数；或
    所述输出装置向所述基站发送半静态调度的配置请求，所述输入装置接收所述基站根据所述配置请求中包含的终端进行的车辆通信业务的消息特征分配的配置参数。
  25. 根据权利要求24所述的终端，其特征在于，所述车辆通信业务的消息特征包括：
    车辆通信消息是否为周期性消息、车辆通信消息的类型、车辆通信消息的发送频率、车辆通信消息的数据大小和车辆通信消息的持续时长。
  26. 根据权利要求23所述的终端，其特征在于，所述输入装置接收所述基站重新分配的所述配置参数；或所述输出装置向所述基站发送半静态调度的重配置请求，所述输入装置接收所述基站根据所述重配置请求重新向所述终端分配的所述配置参数；
    所述处理器根据所述基站重新分配的所述配置参数，重新确定用于周期性传输所述车辆通信消息的时频资源，所述输出装置基于重新确定的时频资源周期性地传输所述车辆通信消息。
  27. 根据权利要求23所述的终端，其特征在于，所述处理器根据所述配置参数，确定用于周期性传输车辆通信消息的时频资源的步骤，具体包括：
    所述处理器监听所述基站发送的物理下行控制信息，并根据所述配置参数中包含的终端进行副链路通信的RNTI，解调出所述时频资源；以及
    所述处理器根据所述配置参数中包含的向所述终端分配的半静态调度周期，确定用于传输所述车辆通信消息的时频资源的使用周期。
  28. 根据权利要求23至27中任一项所述的终端，其特征在于，所述输出装置在所述车辆通信消息的持续时长达到预定时长时，停止使用所述时频资源传输所述车辆通信消息；或
    所述输入装置在接收到所述基站发送的释放所述时频资源的指示信息时，所述输出装置停止使用所述时频资源传输所述车辆通信消息。
  29. 一种基站，其特征在于，包括通信总线、输入装置、输出装置、存储器以及处理器，其中：
    所述通信总线，用于实现所述输入装置、输出装置、存储器以及处理器之间的连接通信；
    所述输出装置，用于向终端发送配置参数以及物理下行控制消息；
    所述存储器中存储一组程序代码，且所述基站调用所述存储器中存储的程序代码，用于执行以下操作：
    所述处理器向终端分配在副链路上进行半静态调度的配置参数；
    所述输出装置将所述配置参数发送至所述终端；
    所述输出装置向所述终端发送物理下行控制信息，以使所述终端基于所述配置参数和所述物理下行控制信息确定用于周期性传输车辆通信消息的时频资源。
  30. 根据权利要求29所述的基站，其特征在于，所述处理器向终端分配在副链路上进行半静态调度的配置参数的步骤，具体包括：
    所述处理器根据已获知的所述终端进行的车辆通信业务的消息特征向所述终端分配所述配置参数；或
    所述输入装置接收所述终端发送的半静态调度的配置请求，所述处理器根据所述配置请求中包含的终端进行的车辆通信业务的消息特征向所述终端分配所述配置参数。
  31. 根据权利要求29所述的基站，其特征在于，所述处理器在需要调整向所述终端分配的所述配置参数时，向所述终端重新分配所述配置参数，所述输出装置将重新分配的所述配置参数发送至所述终端；或
    所述输入装置接收所述终端发送的半静态调度的重配置请求，所述处理器根据所述重配置请求重新为所述终端分配的所述配置参数，所述输出装置将重新分配的所述配置参数发送至所述终端。
  32. 根据权利要求29所述的基站，其特征在于，所述处理器在所述向终端分配在副链路上进行半静态调度的配置参数的步骤之前，还执行以下操作：
    所述处理器根据所述终端进行的车辆通信业务的消息特征，判断是否准许所述终端在副链路上使用半静态调度机制；
    若判定准许所述终端在副链路上使用半静态调度机制，则所述处理器执行所述向终端分配在副链路上进行半静态调度的配置参数的步骤。
  33. 根据权利要求29至32中任一项所述的基站，其特征在于，所述处理器在所述车辆通信消息的持续时长达到预定时长时，释放所述时频资源；或
    所述输出装置向所述终端发送释放所述时频资源的指示信息，所述处理器释放所述时频资源，所述指示信息用于指示所述终端停止使用所述时频资源传输所述车辆通信消息。
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