WO2016187807A1 - 数据传输装置、v2v通信系统及方法 - Google Patents

数据传输装置、v2v通信系统及方法 Download PDF

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Publication number
WO2016187807A1
WO2016187807A1 PCT/CN2015/079814 CN2015079814W WO2016187807A1 WO 2016187807 A1 WO2016187807 A1 WO 2016187807A1 CN 2015079814 W CN2015079814 W CN 2015079814W WO 2016187807 A1 WO2016187807 A1 WO 2016187807A1
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WO
WIPO (PCT)
Prior art keywords
resource
terminal
base station
sending
load value
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PCT/CN2015/079814
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English (en)
French (fr)
Inventor
鲁振伟
韩广林
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to PCT/CN2015/079814 priority Critical patent/WO2016187807A1/zh
Priority to CN201580055262.0A priority patent/CN107079435B/zh
Publication of WO2016187807A1 publication Critical patent/WO2016187807A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation

Definitions

  • Embodiments of the present invention relate to communication technologies, and in particular, to a data transmission device, a V2V communication system, and a method.
  • ITS Intelligent Transportation System
  • Vehicle to Vehicle (V2V) communication as an important communication method in the future ITS, proposes an idealized idea that vehicles can obtain road condition information or receive information services in time through the V2V communication technology.
  • the vehicle can communicate safety information such as its own speed, position, driving direction, and sudden braking to surrounding vehicles through V2V communication, and the vehicle receiving the safety information can prejudge the possible danger and drive to the vehicle.
  • the staff issued an early warning.
  • D2D Device-to-Device
  • LTE Long Term Evolution
  • the embodiment of the present invention provides a data transmission device, a V2V communication system, and a method, to solve the problem that when a method for performing D2D communication in a transmission resource pool by a terminal in the prior art is applied to V2V communication, the resources in the transmission resource pool are limited.
  • the problem of reduced communication quality when the number of vehicles is large.
  • an embodiment of the present invention provides a data transmission apparatus, including:
  • a sending module configured to broadcast a first system message, where the first system message carries the resource control information, where the first system message is used to indicate that the V2V terminal in the coverage of the base station is in accordance with the Transmitting resource control information to send and receive security information, and measuring resource load values;
  • a receiving module configured to receive a resource load value sent by the first V2V terminal
  • an adjusting module configured to adjust, according to the resource load value received by the receiving module, the content of the resource control information
  • the sending module is further configured to broadcast the adjusted resource control information to a V2V terminal within the coverage of the base station.
  • the resource control information that is sent by the sending module includes resource information, where the resource information includes a resource location of the receiving resource pool and a resource location of the sending resource pool.
  • the resource control information that is sent by the sending module includes resource information, a vehicle sending parameter, and a congestion control parameter, where the resource information includes a resource location and a sending of the receiving resource pool. a resource location of the resource pool, the vehicle sending parameter is used to adjust a sending behavior of the subsequent security information, where the congestion control parameter is used to instruct the V2V terminal to measure, or measure and send the resource load in the sending resource pool. value.
  • the adjusting module when the congestion control threshold is preset in the base station, the adjusting module is specifically used in the When the quantity of the resource load value received by the receiving module is greater than the congestion control threshold, the content of the resource control information is adjusted, and the content of the adjustment includes the resource information and the content of the vehicle sending parameter. At least one item, optionally including one or more of the congestion control parameters, wherein the vehicle transmission parameter includes at least one of a transmission time interval and a transmission power of the safety message, the congestion The control parameters include a duration and a resource load threshold for the V2V terminal to perform measurements.
  • the first V2V terminal when the resource load threshold includes a first resource load threshold and a second resource load threshold, the first V2V terminal is specific And when the measured resource load value is greater than the first resource load threshold, or the measured resource load value is less than the second resource load threshold, the V2V terminal that sends the resource load value to the base station.
  • the sending module includes a first sending unit, configured to send a paging a message, or instructing the first V2V terminal to send a paging message;
  • a second sending unit configured to broadcast a second system message that carries the adjusted resource control information, where the second system message is used to indicate that the V2V terminal in the coverage of the base station is according to the adjusted
  • the resource control information transmits and receives the security message, and measures, or measures, and transmits a resource load value of a transmission resource pool broadcast by the second system message.
  • the resource location of the sending resource pool is located in a resource location of the receiving resource pool, and is included in the receiving resource pool.
  • a plurality of the resource pools, and the resource load value received by the receiving module includes a resource load value of the sending resource pool of the first V2V terminal to which the V2V terminal is located. The measurement result, or an average measurement result of the resource load value of the plurality of transmission resource pools by the first V2V terminal;
  • the second system message is specifically configured to indicate that the V2V terminal in each of the sending resource pools in the second system message sends and receives the security message according to the adjusted resource control information, and measures, or Measuring and transmitting a resource load value in a transmission resource pool broadcast by the second system message.
  • the resource location of the sending resource pool is located in a resource location of the receiving resource pool, and is included in the receiving resource pool.
  • a plurality of the resource pools, and the resource load value received by the receiving module includes a resource load value of the first V2V terminal for the sending resource pool in which the V2V terminal is located in a part of the sending resource pool.
  • the second system message is specifically used to indicate that the V2V terminal in the sending resource pool where the first V2V terminal is located sends and receives the security message according to the adjusted resource control information, and measures, or measures, and sends the same.
  • the resource load value of the sending resource pool is specifically used to indicate that the V2V terminal in the sending resource pool where the first V2V terminal is located sends and receives the security message according to the adjusted resource control information, and measures, or measures, and sends the same.
  • the resource load value received by the receiving module further includes a sending resource pool of the first V2V terminal to the second V2V terminal Measurement of the resource load value;
  • the second system message is specifically used to indicate that the V2V terminal in the sending resource pool where the first V2V terminal and the second V2V terminal are located send and receive the security message according to the adjusted resource control information, and Measure, or measure and send the resource load values of the respective sending resource pools.
  • a ninth possible implementation manner The sending, by the first sending unit, the sending, by the first sending unit, the paging message to each V2V terminal in the coverage of the base station; or sending the paging in the receiving resource pool And the paging message is used to indicate that each V2V terminal in the coverage of the base station listens to the second system message in the receiving resource pool.
  • the resource control information further includes location information of a paging resource located in the receiving resource pool
  • the first sending unit is configured to send the paging message to the first V2V terminal
  • the method includes: sending a paging indication message to the first V2V terminal, where the paging indication message is used to indicate that the first V2V terminal is configured according to the The paging indication message and the location information of the paging resource are sent to send the paging message, where the paging message is used to indicate that each V2V terminal in the coverage of the base station is in the receiving resource pool.
  • the second system message is used to indicate that each V2V terminal in the coverage of the base station is in the receiving resource pool.
  • the receiving, by the receiving module, the resource load value is the first The measurement result of the usage rate of the physical resource block PRB in the sending resource pool by a V2V terminal, where the usage rate of the RPB is specifically:
  • the M1(T) represents the number of PRBs that have been used in the duration T in the transmission resource pool
  • the P(T) represents the PRB available in the transmission resource pool for the duration T.
  • the total amount, T is the duration of the measurement performed by the first V2V terminal; or,
  • the resource load value received by the receiving module is a measurement result of the collision rate of the physical resource block PRB in the sending resource pool by the first V2V terminal, and the collision rate of the RPB is specifically:
  • the M1(T) represents the number of PRBs that have been used in the transmission resource pool for the duration T, and the M2(T) represents the collision in the transmission resource pool within the duration T.
  • the number of PRBs, T is the duration during which the first V2V terminal performs the measurement.
  • any one of the first to the eleventh possible implementation manners of the first aspect in the twelfth possible implementation, when the congestion control parameter further includes the base station The capability of the domain value, the receiving module specifically receives the resource load value sent by the third V2V terminal, and the third V2V terminal is the first V2V whose identity information is an integer multiple of the capability domain value. terminal.
  • the receiving module specifically receives the fourth V2V terminal. And the fourth V2V terminal, where the fourth V2V terminal sends the identifier indication to the load, the first V2V terminal whose identity information is an integer multiple of the capability domain value; or the fourth When the V2V terminal sends the identifier indicating that the load is not reported, the identifier information of the V2V terminal is a non-integer multiple of the capability domain value.
  • the resource load value received by the receiving module is The first V2V terminal is transmitted by radio resource control RRC signaling or by a control cell MAC CE controlled by the media intervention.
  • an embodiment of the present invention provides a data transmission apparatus, which is disposed in each vehicle-to-vehicle V2V terminal within a coverage of a base station, where the data transmission apparatus includes:
  • a receiving module configured to receive a first system message that is broadcast by the base station, where the first system message carries resource control information, where the first system message is used to indicate that the V2V terminal in the coverage of the base station is Deriving resource control information to send and receive security information;
  • a measuring module configured to measure a resource load value according to the resource control information
  • a sending module configured to send, to the base station, a resource load value measured by the measurement module, where the resource load value is used to indicate that the base station adjusts content of the resource control information according to the resource load value;
  • the receiving module is further configured to receive the adjusted resource control information that is broadcast by the base station to the V2V terminal in the coverage of the base station.
  • the resource control information received by the receiving module includes resource information, where the resource information includes a resource location of the receiving resource pool and a resource location of the sending resource pool.
  • the resource control information received by the receiving module includes resource information, a vehicle sending parameter, and a congestion control parameter, where the resource information includes a resource location of the receiving resource pool.
  • the vehicle sending parameter is used to adjust a sending behavior of the subsequent security information, where the congestion control parameter is used to instruct the V2V terminal to measure, or measure and send the resource in the sending resource pool. Load value.
  • the resource load value is specifically used to indicate When the number of the received resource load values is greater than the congestion control threshold, the base station adjusts the content of the resource control information, where the adjusted content includes the resource information and the content of the vehicle sending parameter.
  • the congestion control parameters include a duration and a resource load threshold for the V2V terminal to perform measurements.
  • the sending module when the resource load threshold includes a first resource load threshold and a second resource load threshold, the sending module is specifically used And when the resource load value measured by the measurement module is greater than the first resource load threshold or less than the second resource load threshold, the resource load value measured by the measurement module is sent to the base station.
  • the sending module is further configured to send, according to the location information of the paging resource and the paging indication message, the paging message, where the paging message is used to indicate each V2V in the coverage of the base station.
  • the terminal monitors, in the receiving resource pool, a second system message that is broadcast by the base station and carries the adjusted resource control information, where the second system message is used to indicate the V2V in the coverage of the base station. And transmitting, by the terminal, the security message according to the adjusted resource control information, and measuring, or measuring, and transmitting, a resource load value of a sending resource pool broadcast by the second system message.
  • the resource location of the sending resource pool is located in a resource location of the receiving resource pool, where the receiving resource pool is included
  • the measuring module is specifically configured to measure the resource load value of the sending resource pool in which the resource control information is located, or Describe the average resource load value of multiple sending resource pools;
  • the second system message is specifically configured to indicate each of the sending in the second system message.
  • the V2V terminal in the resource pool sends and receives the security message according to the adjusted resource control information, and measures, or measures and transmits, a resource load value of a transmission resource pool broadcast by the second system message.
  • the resource location of the sending resource pool is located in a resource location of the receiving resource pool, and is included in the receiving resource pool.
  • the measuring module is specifically configured to measure a resource load value in a sending resource pool according to the resource control information;
  • the second system message is specifically used to indicate that all V2V terminals in the sending resource pool where the V2V terminal to which the data transmission device belongs are sent and received according to the adjusted resource control information, and measured, or measured. And the resource load value of the sending resource pool in which it is sent.
  • the measuring module is further configured to measure, according to the resource control information, a resource load value of a sending resource pool where the first V2V terminal is located;
  • the second system message is specifically configured to indicate that the V2V terminal to which the data transmission device belongs and the V2V terminal in the transmission resource pool where the first V2V terminal is located send and receive the security message according to the adjusted resource control information. And measuring, or measuring and transmitting the resource load values of the respective sending resource pools.
  • the measuring module is specifically used in the sending resource pool
  • the usage rate of the physical resource block PRB is measured, and the measured resource load value is specifically:
  • the M1(T) represents the number of PRBs that have been used in the duration T in the transmission resource pool
  • the P(T) represents the PRB available in the transmission resource pool for the duration T.
  • the total amount, T is the duration of the measurement performed by the V2V terminal to which the data transmission device belongs;
  • the measurement module is specifically configured to measure a collision rate of a physical resource block PRB in the sending resource pool, where the measured resource load value is specifically:
  • said M1(T) represents a PRB that has been used in the transmission resource pool for a duration T
  • the number of the M2(T) indicates the number of PRBs that collide within the duration T within the transmission resource pool, and T is the duration during which the V2V terminal to which the data transmission device belongs performs the measurement.
  • any one of the first to the ninth possible implementation manners of the second aspect in the tenth possible implementation manner, when the congestion control parameter received by the receiving module further includes
  • the data transmission apparatus further includes: a determining module, configured to determine, before the sending module sends the resource load value measured by the measurement module to the base station, the V2V terminal to which the V2V terminal belongs Whether the identification information is an integer multiple of the capability domain value;
  • the sending module And sending, by the sending module, the resource load value to the base station, where the method further includes: when the determining module determines that the identifier information of the V2V terminal to which the UE belongs is an integer multiple of the capability domain value, to the base station Sending the resource load value measured by the measurement module.
  • the determining module is specifically configured to send in the Before the module sends the resource load value measured by the measurement module to the base station, determining that the identifier information of the V2V terminal to which the module belongs is an integer multiple or a non-integer multiple of the capability domain value;
  • the sending module And sending, by the sending module, the resource load value to the base station, where the method further includes: when the determining module determines that the identifier information of the V2V terminal to which it belongs is an integer multiple of the capability domain value, and sending the load When the identifier indication is reported, the resource load value measured by the measurement module is sent to the base station; or
  • the determining module determines that the identifier information of the V2V terminal to which it belongs is a non-integer multiple of the capability domain value, and the load sending identifier indicates that the packet is not reported, the resource measured by the measurement module is sent to the base station. Load value.
  • the sending module is configured to send the The resource load value specifically includes: transmitting the resource load value to the base station by using a radio resource control RRC signaling or a control cell MAC CE controlled by media intervention.
  • the embodiment of the present invention provides a vehicle-to-vehicle communication system, comprising: a base station and at least one vehicle-to-vehicle V2V terminal, wherein the base station is provided with the data transmission device according to any one of the above first aspects, A data transmission device according to any one of the above second aspects is provided in each of the V2V terminals.
  • an embodiment of the present invention provides a vehicle-to-vehicle communication method, including:
  • the base station broadcasts a first system message, where the first system message carries the resource control information, and the first system message is used to indicate that the V2V terminal in the coverage of the base station sends and receives security according to the resource control information.
  • Information as well as measuring resource load values;
  • the base station adjusts the content of the resource control information according to the received resource load value
  • the base station broadcasts the adjusted resource control information to a V2V terminal within the coverage of the base station.
  • the resource control information includes resource information, where the resource information includes a resource location of the receiving resource pool and a resource location of the sending resource pool.
  • the resource control information includes resource information, a vehicle sending parameter, and a congestion control parameter, where the resource information includes a resource location of the receiving resource pool and a resource location of the sending resource pool.
  • the vehicle sending parameter is used to adjust a sending behavior of the subsequent security information, where the congestion control parameter is used to instruct the V2V terminal to measure, or measure and send, the resource load value in the sending resource pool.
  • the base station when the congestion control threshold is preset in the base station, the base station is configured according to the received resource load value. Adjusting the content of the resource control information, including:
  • the base station adjusts content of the resource control information when the quantity of the received resource load value is greater than the congestion control threshold, where the content of the adjustment includes the resource information and the vehicle sending parameter At least one of the content, optionally including one or more of the congestion control parameters, wherein the vehicle transmission parameter includes at least one of a transmission time interval and a transmission power of the safety message,
  • the congestion control parameter includes a duration and a resource load threshold for the V2V terminal to perform measurements.
  • the first V2V terminal when the resource load threshold includes a first resource load threshold and a second resource load threshold, the first V2V terminal is specific And when the measured resource load value is greater than the first resource load threshold, or the measured resource load value is less than the second resource load threshold, the V2V terminal that sends the resource load value to the base station.
  • the method further includes:
  • the base station broadcasts the adjusted resource control information to a V2V terminal in the coverage of the base station, including:
  • the base station broadcasts a second system message that carries the adjusted resource control information, where the second system message is used to indicate that the V2V terminal in the coverage of the base station is sent according to the adjusted resource control information. And receiving the security message, and measuring, or measuring, and transmitting a resource load value of a transmission resource pool broadcast by the second system message.
  • the resource location of the sending resource pool is located in a resource location of the receiving resource pool, and is included in the receiving resource pool.
  • the resource load value received by the base station includes a resource load of the first V2V terminal for the sending resource pool a measurement result of the value, or an average measurement result of the resource load value of the plurality of transmission resource pools by the first V2V terminal;
  • the second system message is specifically configured to indicate that the V2V terminal in each of the sending resource pools in the second system message sends and receives the security message according to the adjusted resource control information, and measures, or Measuring and transmitting a resource load value in a transmission resource pool broadcast by the second system message.
  • the resource location of the sending resource pool is located in a resource location of the receiving resource pool, and is included in the receiving resource pool.
  • the resource load value received by the base station includes a resource load of the first V2V terminal for the sending resource pool The measurement result of the value;
  • the second system message is specifically used to indicate that the V2V terminal in the sending resource pool where the first V2V terminal is located sends and receives the security message according to the adjusted resource control information, and measures, or measures, and sends the same.
  • the resource load value of the sending resource pool is specifically used to indicate that the V2V terminal in the sending resource pool where the first V2V terminal is located sends and receives the security message according to the adjusted resource control information, and measures, or measures, and sends the same.
  • the resource load value received by the base station further includes a sending resource that is sent by the first V2V terminal to the second V2V terminal The measurement result of the resource load value of the pool;
  • the second system message is specifically configured to indicate that the V2V terminal in the sending resource pool where the first V2V terminal and the second V2V terminal are located send and receive the security message according to the adjusted resource control information, and measure , or measure and send the resource load value of the respective sending resource pool.
  • the sending, by the base station, the paging message includes:
  • the base station instructs the first V2V terminal to send a paging message, including:
  • a paging indication message to the first V2V terminal, where the paging indication message is used to indicate that the first V2V terminal sends the location according to the paging indication message and location information of the paging resource.
  • a paging message where the paging message is used to indicate that each V2V terminal in the coverage of the base station listens to the second system message in the receiving resource pool.
  • the resource load value received by the base station is The measurement result of the usage rate of the physical resource block PRB in the sending resource pool by the first V2V terminal, where the usage rate of the RPB is specifically:
  • the M1(T) represents the number of PRBs that have been used in the duration T in the transmission resource pool
  • the P(T) represents the PRB available in the transmission resource pool for the duration T.
  • the total amount, T is the duration of the measurement performed by the first V2V terminal; or,
  • the resource load value received by the base station is a measurement result of the collision rate of the physical resource block PRB in the sending resource pool by the first V2V terminal, and the collision rate of the RPB is specifically:
  • said M1(T) represents a PRB that has been used in the transmission resource pool for a duration T
  • the number of the M2(T) represents the number of PRBs that collide within the duration T within the transmission resource pool, and T is the duration during which the first V2V terminal performs the measurement.
  • any one of the first to the eleventh possible implementation manners of the fourth aspect in the twelfth possible implementation, when the congestion control parameter further includes the base station
  • the base station specifically receives the resource load value sent by the third V2V terminal, and the third V2V terminal is the first V2V terminal whose identity information is an integer multiple of the capability domain value.
  • the base station when the congestion control parameter further includes a load sending identifier, the base station specifically receives the fourth V2V terminal to send a resource load value, wherein the fourth V2V terminal sends, by the fourth V2V terminal, the first V2V terminal whose identity information is an integer multiple of the capability domain value when the load indication is reported, or the fourth V2V terminal
  • the identifier information of the terminal is a first V2V terminal that is not a multiple of the capability domain value.
  • any one of the first to the thirteenth possible implementation manners of the fourth aspect, in the fourteenth possible implementation manner, the resource load value received by the base station is
  • the first V2V terminal is transmitted by radio resource control RRC signaling or by a control cell MAC CE controlled by media intervention.
  • an embodiment of the present invention provides a vehicle-to-vehicle communication method, including:
  • the first V2V terminal measures a resource load value according to the resource control information
  • the first V2V terminal sends the measured resource load value to the base station, where the resource load value is used to indicate that the base station adjusts the content of the resource control information according to the resource load value;
  • the first V2V terminal receives the adjusted resource control information broadcast by the base station to the V2V terminal within the coverage of the base station.
  • the resource control information received by the first V2V terminal includes resource information, where the resource information includes a resource location of the receiving resource pool and a resource location of the sending resource pool.
  • the first V2V terminal receives the The resource control information includes resource information, a vehicle sending parameter, and a congestion control parameter, where the resource information includes a resource location of the receiving resource pool and a resource location of the sending resource pool, where the vehicle sending parameter is used to adjust a sending behavior of the subsequent security information,
  • the congestion control parameter is used to instruct the V2V terminal to measure, or measure and transmit, the resource load value in the sending resource pool.
  • the resource load value is specifically used to indicate When the number of the received resource load values is greater than the congestion control threshold, the base station adjusts the content of the resource control information, where the adjusted content includes the resource information and the content of the vehicle sending parameter.
  • the congestion control parameters include a duration and a resource load threshold for the V2V terminal to perform measurements.
  • the first V2V terminal Sending, by the base station, the measured resource load value, including:
  • the first V2V terminal sends the resource load value to the base station when the measured resource load value is greater than the first resource load threshold or less than the second resource load threshold.
  • any one of the first to fourth possible implementation manners of the fifth aspect when the resource control information further includes the receiving resource pool In the location information of the paging resource, the method further includes:
  • the first V2V terminal sends a paging message according to the location information of the paging resource and the paging indication message, where the paging message is used to indicate that each V2V terminal in the coverage of the base station receives the paging message.
  • the resource control information sends and receives the security message, and measures, or measures, and transmits a resource load value of a transmission resource pool broadcast by the second system message.
  • the resource location of the sending resource pool is located in a resource location of the receiving resource pool, and is included in the receiving resource pool. a plurality of the sending resource pools, and the V2V terminals are all located in the sending resource When the pool is in the pool, the first V2V terminal measures the resource load value according to the resource control information, including:
  • the first V2V terminal measures a resource load value of a sending resource pool in which the resource is located according to the resource control information, or measures an average resource load value of the multiple sending resource pools;
  • the second system message is specifically configured to indicate that the V2V terminal in each of the sending resource pools in the second system message sends and receives the security message according to the adjusted resource control information, and measures, Or measuring and transmitting a resource load value of a sending resource pool broadcast by the second system message.
  • the resource location of the sending resource pool is located in a resource location of the receiving resource pool, and is included in the receiving resource pool.
  • the first V2V terminal is configured to measure a resource load value according to the resource control information, and includes:
  • the first V2V terminal measures a resource load value in a sending resource pool in which the first V2V terminal is located according to the resource control information;
  • the second system message is specifically used to indicate that all V2V terminals in the sending resource pool where the first V2V terminal is located send and receive the security message according to the adjusted resource control information, and measure, or measure, and send.
  • the resource load value of the sending resource pool is specifically used to indicate that all V2V terminals in the sending resource pool where the first V2V terminal is located send and receive the security message according to the adjusted resource control information, and measure, or measure, and send.
  • the first V2V terminal, according to the resource control information, the resource load value further includes:
  • the first V2V terminal measures, according to the resource control information, a resource load value of a sending resource pool where the second V2V terminal is located;
  • the second system message is specifically configured to indicate that the V2V terminal in the sending resource pool where the first V2V terminal and the second V2V terminal are located send and receive the security message according to the adjusted resource control information, and measure , or measure and send the resource load value of the respective sending resource pool.
  • the first V2V terminal measures the resource load according to the resource control information Values, including:
  • the first V2V terminal measures the usage rate of the physical resource block PRB in the sending resource pool, and the measured resource load value is specifically:
  • said M1(T) represents a PRB that has been used in the transmission resource pool for a duration T
  • the number of P(T) represents the total amount of PRBs available in the transmission time pool for the duration T, and T is the duration of the measurement performed by the first V2V terminal;
  • the first V2V terminal measures a collision rate of the physical resource block PRB in the sending resource pool, and the measured resource load value is specifically:
  • the M1(T) represents the number of PRBs that have been used in the transmission resource pool for the duration T, and the M2(T) represents the collision in the transmission resource pool within the duration T.
  • the number of PRBs, T is the duration during which the first V2V terminal performs the measurement.
  • any one of the first to the ninth possible implementation manners of the fifth aspect in the tenth possible implementation manner, when the congestion control parameter further includes a capability domain of the base station And before the sending, by the first V2V terminal, the measured resource load value to the base station, the method further includes:
  • the first V2V terminal determines that its own identification information is an integer multiple of the capability domain value, sending the measured resource load value to the base station.
  • the congestion control parameter when the congestion control parameter further includes a load sending identifier, the first V2V terminal sends the location to the base station Before the measured resource load value, it also includes:
  • the first V2V terminal determines that its own identification information is an integer multiple or a non-integer multiple of the capability domain value
  • the measured resource load value is sent to the base station; or ,
  • the first V2V terminal sends the measured resource load value to the base station, including:
  • the first V2V terminal sends the measured resource load value to the base station by using radio resource control RRC signaling or by a media intervention control MACC.
  • the data transmission device broadcasts a first system message carrying the resource control information by using the sending module, where the first system message is used to indicate the V2V terminal in the coverage of the base station.
  • the terminal performs congestion control.
  • the data transmission apparatus provided in this embodiment solves the problem that the communication quality is degraded when the number of vehicles is large due to the limited resources in the transmission resource pool when the D2D communication mode of the prior art is applied to the V2V communication. , correspondingly increasing the resources in each sending resource pool Use rate.
  • FIG. 1 is a schematic structural diagram of a data transmission apparatus according to Embodiment 1 of the present invention.
  • FIG. 2 is a schematic diagram of an application scenario of V2V communication provided by the embodiment shown in FIG. 1;
  • FIG. 3 is a schematic diagram of a format of a MAC CE provided by the embodiment shown in FIG. 1;
  • FIG. 4 is a schematic diagram of a format of a MAC subheader provided by the example shown in FIG. 1;
  • FIG. 5 is a schematic diagram of another MAC subheader provided by the example shown in FIG. 1;
  • FIG. 6 is a schematic structural diagram of a data transmission apparatus according to Embodiment 2 of the present invention.
  • FIG. 7 is a schematic structural diagram of a data transmission apparatus according to Embodiment 3 of the present invention.
  • FIG. 8 is a schematic structural diagram of another data transmission apparatus according to an embodiment of the present disclosure.
  • FIG. 9 is a schematic structural diagram of a base station according to an embodiment of the present invention.
  • FIG. 10 is a schematic structural diagram of a V2V terminal according to an embodiment of the present invention.
  • FIG. 11 is a flowchart of a V2V communication method according to Embodiment 5 of the present invention.
  • FIG. 12 is a flowchart of another V2V communication method according to an embodiment of the present invention.
  • FIG. 13 is a flowchart of a V2V communication method according to Embodiment 6 of the present invention.
  • FIG. 14 is a flowchart of still another V2V communication method according to an embodiment of the present invention.
  • FIG. 15 is a flowchart of still another V2V communication method according to an embodiment of the present invention.
  • the base station, the V2V terminal and the manner of performing the V2V communication provide a feasible implementation manner for the implementation of the ITS.
  • the present invention considers the existing D2D communication mode to be applied to the V2V communication.
  • the communication mode of the D2D specifically includes: mode 1:
  • the D2D terminal establishes a connection with the base station, and each time the base station allocates D2D resources thereto, the D2D terminal sends D2D data on the resource, and the D2D terminal performing the mode must be in the coverage of the base station.
  • the D2D terminal randomly selects the D2D resource in the sending resource pool, and sends the D2D data on the selected D2D resource.
  • the sending resource pool information is passed by the base station.
  • the system message is uniformly broadcasted or transmitted to the D2D terminal through the radio resource control (Radio Resource Control, RRC for short) dedicated signaling.
  • RRC Radio Resource Control
  • the pre-configured transmission resource pool is used; In the above manner, the terminal device also needs to receive the D2D data in the receiving resource pool.
  • the receiving resource pool is notified by the base station by means of broadcast; for the second mode, the pre-configured receiving resource pool is used.
  • the D2D terminal in the first mode must be a terminal that establishes a connection with the base station within the coverage of the base station, and the limitation of the mode in the specific use is large; the D2D terminal in the second mode can be broadcast by the base station.
  • An SA message is sent in the sending resource pool of the Assignment (SA), and the SA message indicates the related information of the sending data, such as the modulation and coding format, the data transmission resource location, and the physical layer identifier (Identity, referred to as ID). Then, the data is sent according to the related content of the SA message.
  • the D2D terminal receives the data by first receiving the SA message sent by the peer D2D terminal, and then receiving the corresponding data according to the content indicated in the SA message.
  • the V2V terminal may refer to a vehicle, and may specifically be an in-vehicle communication module configured on a vehicle. Since the vehicle is usually in a moving state, the V2V terminal in the coverage of the base station changes in real time, and when the number of V2V terminals in a certain base station coverage is large. Congestion may occur. That is, the probability that multiple V2V terminals select the same resource to broadcast security messages in the sending resource pool will increase. Therefore, other V2V terminals cannot receive security messages normally, and the V2V terminals in the base station range are reduced. Pass-through security.
  • the V2V terminal in the following embodiments of the present invention is not limited to the in-vehicle communication module configured in the vehicle, and may also be a wireless terminal used by a pedestrian in the coverage of the base station, such as a mobile phone or a personal digital assistant (Personal Digital Assistant). , abbreviated as: PDA), etc., that is, the mobile communication terminals within the coverage of the base station can be defined as V2V terminals.
  • PDA Personal Digital Assistant
  • the base station in the embodiments of the present invention is mainly used to perform congestion control. Specifically, on the one hand, the system broadcasts resource control information, and on the other hand, receives the report reported by the vehicle.
  • the resource load value of the resource pool is sent to determine whether congestion control needs to be performed and how to adjust.
  • the V2V terminal is mainly used to perform transmission and reception of security messages, and to measure and report the resource load value of the resource pool to the base station.
  • the generated security message is broadcast; when no security message is generated, it is necessary to receive the security message sent by other vehicles.
  • FIG. 1 is a schematic structural diagram of a data transmission apparatus according to Embodiment 1 of the present invention.
  • the data transmission device of this embodiment is applicable to the case of performing V2V communication, and the data transmission device can be implemented in hardware and software, and is usually disposed in a base station of the V2V communication system, and the V2V terminal passes the message within the coverage of the base station. Interact and perform congestion control management.
  • the data transmission apparatus provided in this embodiment specifically includes: a sending module 11, a receiving module 12, and an adjusting module 13.
  • the sending module 11 is configured to broadcast a first system message, where the first system message carries resources. Control information, the first system message is used to indicate that the V2V terminal within the coverage of the base station sends and receives the security message according to the resource control information, and measures the resource load value.
  • FIG. 2 is a schematic diagram of an application scenario of V2V communication provided in the embodiment shown in FIG. 1.
  • the communication can be performed, and the base station can broadcast the first system message to each vehicle. However, the message can be sent to the base station only after the vehicle establishes a connection with the base station.
  • the V2V terminal after the V2V terminal enters the coverage of the base station, it can receive the message.
  • the first system message acquires resource control information included therein, where the resource control information includes resource information, where the resource information includes a sending resource pool information and a resource location of the receiving resource pool, where the sending resource pool is a subset of the receiving resource pool, and is located at the receiving resource.
  • the resource control information includes resource information, where the resource information includes a sending resource pool information and a resource location of the receiving resource pool, where the sending resource pool is a subset of the receiving resource pool, and is located at the receiving resource.
  • the V2V terminal sends a security message, the resource is selected and sent in the sending resource pool.
  • the selected resource may be allocated by the base station or randomly selected; the manner in which the V2V terminal receives the data is Monitoring the security messages sent by other V2V terminals in the entire receiving resource pool; and, the V2V in the coverage of the base station
  • the terminal can measure the resource load value in the sending resource pool.
  • the resource control information may further include a vehicle sending parameter and a congestion control parameter, where the vehicle sending parameter is used to adjust a sending behavior of the subsequent security information, and the congestion control parameter is used to instruct the V2V terminal to measure, or measure and send the resource load in the sending resource pool.
  • the vehicle transmission parameter and the congestion control parameter may also be pre-configured in the V2V terminal, and the vehicle transmission parameter may include at least one of a transmission time interval and a transmission power of the safety message, and the congestion control parameter may include execution for the V2V terminal.
  • the duration of the measurement and the resource load threshold may be pre-configured in the V2V terminal, and the vehicle transmission parameter may include at least one of a transmission time interval and a transmission power of the safety message, and the congestion control parameter may include execution for the V2V terminal.
  • the sending time of the security message may be limited by the sending time interval to reduce the collision probability of sending the security message on the same resource. It should be noted that the security message is generated by the application layer. If the transmission time interval is not configured, the V2V terminal performs a transmission operation when the security message is generated. The transmission time interval is specifically configured as a parameter for the V2V terminal.
  • the V2V terminal is configured.
  • the security message is sent at intervals, and optionally, the V2V terminal can also send security through the transmission power limit.
  • the power of the message is used to reduce the interference to the vehicle that is far away.
  • the transmission time interval and the transmission power can be simultaneously used for the V2V terminal to send the security message; on the other hand, the V2V terminal can measure the resource load value in the transmission resource pool. And when the measured resource load value meets the resource load threshold, the resource load value is reported to the base station, where the resource load threshold may be set according to a bearer capability of the sending resource pool allocated by the base station, and the preset resource load threshold is adopted.
  • the resource load threshold may be set according to a bearer capability of the sending resource pool allocated by the base station, and the preset resource load threshold is adopted.
  • the receiving module 12 is configured to receive a resource load value sent by the first V2V terminal.
  • the first V2V terminal that establishes a connection with the base station and sends the resource load value to the base station in this embodiment is specifically a V2V terminal whose measured resource load value meets a resource load threshold, and other V2V terminals in the coverage of the base station do not need to report the measurement thereof. Resource load value.
  • the number of the first V2V terminals may be one or more, and the base station receives the resource load value sent by the first V2V terminal in the coverage area, and may report the load status to the first V2V terminal according to the received resource load value.
  • the specific number of the first V2V terminals, and the load status of the transmission resource pool corresponding to the resource load value measured by each first V2V terminal can be known.
  • the resource load threshold may include a first resource load threshold and a second resource load threshold, where the first resource load threshold is an upper threshold that triggers the V2V terminal to report, and the second resource load threshold is a triggered V2V terminal. If the measured resource load value is greater than the first resource load threshold, or the measured resource load value is less than the second resource load threshold, the resource load is sent to the base station, where the lower threshold is reported. Value of the V2V terminal. That is, the first V2V terminal may report the measured resource load value when the resource of the sending resource pool is tight, and when the upper threshold is triggered, or report the measured resource load when the resource of the sending resource pool is idle and the lower threshold is triggered. value.
  • the adjusting module 13 is configured to adjust the content of the resource control information according to the resource load value received by the receiving module 12. Specifically, the content adjusted by the adjustment module 13 is not limited to the content of the resource control information sent by the sending module 11. If the vehicle sending parameter and the congestion control parameter are pre-configured in the V2V terminal, the adjusting module 13 can also send parameters and congestion control to the vehicle. The contents of the parameters are adjusted and the adjusted parameters are added to the resource control information.
  • the sending module 11 in this embodiment is further configured to broadcast the adjusted resource control information to the V2V terminal in the coverage of the base station.
  • the receiving module 12 receives the resource load value reported by the first V2V terminal, As the basis for adjusting the resource control information by the adjustment module 13, the base station knows the transmission resource pool corresponding to the resource load value sent by each first V2V terminal, and knows the resource status of each transmission resource pool, according to the first The V2V terminal reports the content of the resource control information, and the adjusted resource control information is adapted to the V2V terminal in the current state to send a security message, so that the sending module 11 broadcasts the adjusted to the V2V terminal in its coverage range.
  • the content enables the V2V terminal to use the resource control information in the current state to send a security message, and implements centralized congestion control of the V2V terminal within the coverage of the base station to improve the utilization of resources in each transmission resource pool.
  • the sending resource pool may be one or more.
  • the adjustment module 13 when the congestion control threshold is preset in the base station, the adjustment module 13 is specifically configured to: when the number of resource load values received by the receiving module 12 is greater than the congestion control threshold, the content of the resource control information Adjusting, the quantity of the resource load value is the same as the number of the first V2V terminal reporting the information to the base station, wherein the content adjusted by the adjustment module 13 includes at least one of resource information and content of the vehicle transmission parameter, resource information and
  • the vehicle transmission parameter is a transmission resource and a transmission mode of the transmission security message specified by the base station to the V2V terminal, and the base station adjusts the resource information and the vehicle transmission parameter related to the transmission of the security message by the V2V terminal, and reduces the selection of the same resource by multiple V2V terminals.
  • the probability of sending a security message is to ensure that each V2V terminal within the coverage of the base station can normally receive the security message sent by other V2V terminals, thereby improving the security of vehicle traffic.
  • the content adjusted by the adjustment module 13 may further include one or more of congestion control parameters, where the parameter specifically specifies a manner in which the V2V terminal measures the resource load value in the sending resource pool.
  • the resource information in this embodiment may further include available frequency points and bandwidth information
  • the vehicle transmission parameter may further include a modulation and coding format.
  • the embodiment of the present invention does not limit the specific content of the resource control information, as long as it can be used.
  • the V2V terminal that indicates the coverage of the base station sends and receives the security message in the manner indicated by the base station, and is used to measure the resource load value of the load status in the transmission resource pool broadcasted by the base station, so as to ensure that the base station can cover the V2V terminal in the coverage area.
  • Information for performing centralized congestion control can be used in the embodiments of the present invention.
  • the new receiving resource pool and the sending resource pool may be allocated on the original frequency and bandwidth.
  • the V2V terminal may select a resource according to the newly added information; if a new receiving resource pool is also included, the V2V terminal The terminal may receive the security message in the new receiving resource pool; if the new frequency point, the bandwidth, and the sending resource pool and the receiving resource pool on the new frequency band resource are also included, the V2V terminal may indicate according to the information. The resource is selected in the transmission resource pool on the new frequency band, and the message is received in the new reception resource pool.
  • the data transmission device broadcasts a first system message carrying resource control information by using a sending module, where the first system message is used to indicate that the V2V terminal in the coverage of the base station sends and receives security according to the received resource control information. And receiving a resource load value by the receiving module, and receiving, by the receiving module, a resource load value sent by the first V2V terminal, so that the adjusting module adjusts the content of the resource control information according to the received resource load value, and is within the coverage of the The V2V terminal sends the adjusted resource control information to adapt the changed resource control information to the V2V terminal in the current state to send and receive the security message, and implements congestion control on the V2V terminal in the coverage area.
  • the transmission device solves the problem that when the method of the prior art D2D communication is applied to the V2V communication, the communication quality is degraded due to the limited resources in the transmission resource pool, and the transmission quality is improved accordingly. Utilization of resources. Specifically, when there are a large number of vehicles, congestion occurs, and the probability that a plurality of vehicles select the same resource to broadcast a safety message is increased, resulting in poor safety of vehicle traffic.
  • the number of V2V terminals reporting information to the base station is limited by setting a resource load threshold on the base station side, so as to reduce the processing resource occupied by the reported information and the processing load of the base station;
  • the vehicle sends a parameter to send a security message, which is beneficial to reducing the collision probability of the V2V terminal transmitting the security message on the same resource, and at the same time reducing the interference to the far-reaching V2V terminal.
  • the congestion control parameter may further include a capability domain value of the base station, where the capability domain value may be, for example, a positive integer, which is preset according to the processing capability of the base station.
  • the receiving module 12 specifically receives the resource load value sent by the third V2V terminal, and the third V2V terminal is a subset of the first V2V terminal, and specifically the identity (Identity, abbreviated as: ID) information is capability.
  • the first V2V terminal in the integer value of the domain value; the first V2V terminal in this embodiment may further calculate whether its own ID information is an integer multiple of the capability threshold, and the ID information may be, for example, the first V2V terminal.
  • a communication-related ID number such as a license plate number or an International Mobile Subscriber Identity (IMSI), or another type of ID number.
  • IMSI International Mobile Subscriber Identity
  • the base station will be based on it
  • the capability threshold for processing capability selection is broadcasted to the V2V terminal through the first system message.
  • all the first V2V terminals that is, the V2V terminals whose measured resource load values meet the resource load threshold, are required to be
  • the base station establishes a connection and reports the measured resource load value to the base station, which causes a large processing load on the base station.
  • the base station broadcasts its capability threshold, so that the first V2V terminal can determine whether to report the load state when the load state is reported, and only one subset thereof, that is, the third V2V terminal.
  • Reporting the resource load value reduces the number of V2V terminals that report the resource load value to the base station, and correspondingly reduces the processing load of the base station; at the same time, the base station multiplies the number of the third V2V terminals that report the resource load value by the preset.
  • the capability threshold can estimate the total number of the first V2V terminals, and then combine the reported resource load values to comprehensively analyze the content of the resource control information.
  • the sending module 11 broadcasts the resource control information, where the congestion control parameter may include not only the capability domain value of the foregoing base station, but the congestion control parameter may further include a load sending identifier, for example, occupying 1 bit ( The resource space of Bit) is represented by “1" for "reporting” and by "0" for “not reporting”; then the receiving module 12 specifically receives the resource load value sent by the fourth V2V terminal, and the fourth V2V terminal is When the load transmission identifier is 1, the identification information of the first V2V terminal is an integer multiple of the capability domain value, or the fourth V2V terminal is a non-integer of the capability domain value when the load transmission identifier is 0. Double the first V2V terminal.
  • the first V2V terminal whose resource load value meets the resource load threshold is measured, and whether the identity information of the capability is an integer multiple of the capability domain value and the load transmission identifier broadcast by the base station is used to confirm whether Establishing a connection with the base station and reporting the load status; for example, if the capability field value is 4 and the load transmission identifier is "reported", the first V2V terminal whose identification information can be divisible by 4 needs to be reported; if the capability domain value is 4.
  • the first V2V terminal that cannot be divisible needs to be reported, and the first V2V terminal that cannot be divisible needs to be reported.
  • the embodiment has higher flexibility.
  • the capability domain value is 4, about 1/4 is required.
  • the first V2V terminal reports that the larger the value of the capability field value is, the smaller the number of the first V2V terminals that need to be reported is, and the capacity field value is 2, then 1/2 of the first V2V terminals need to be reported; if necessary,
  • the method of determining whether to report the load status by using the capability field value is difficult to implement, and the method for transmitting the identifier by combining the capability domain value and the load in the embodiment is The capability field value is 4, and the load sends an identifier indicating "on The report is consistent with the effect reported in the above embodiment; if the load transmission flag indicates "not reported", it indicates that the first V2V terminal that cannot be divisible by 4 needs to be reported, and then about 3/4 of the first V2V is required. The load status of the terminal is reported.
  • the present embodiment provides a more flexible configuration mode, which can flexibly adjust the number of first V2V terminals that report the
  • the resource load value received by the receiving module 12 in the foregoing embodiment is a first V2V terminal, which is controlled by radio resource control (Radio Resource Control, RRC for short) or by media intervention control (Medium Access Control, referred to as :MAC) Control Element (referred to as: CE), which is sent by MAC CE.
  • RRC Radio Resource Control
  • MAC Medium Access Control
  • the first V2V terminal reports the measured resource load value to the base station by using RRC signaling, and may use an existing measurement report (Measurement Report, MR: RRC signaling).
  • MR Measurement Report
  • a new cell is added to report the resource load value of the transmission resource pool measured by the V2V terminal, and a new RRC signaling may be added, which is dedicated to the resource load value of the transmission resource pool reported by the V2V terminal.
  • the resource load value can be a percentage indicating the resource load usage. For example, a value closest to the actual measurement can be selected from the set of ⁇ 0%, 5%, ..., 95%, 100% ⁇ . Reported to the base station.
  • the first V2V terminal reports the manner of transmitting the resource load value in the resource pool by using the RRC signaling, and the RRC signaling needs to be processed by other layers of the protocol stack, such as encryption, adding a packet header, etc., on the one hand, reporting the speed to the base station Slow, on the other hand, brings some additional overhead.
  • the first V2V terminal reports the measured resource load value to the base station through a new MAC CE, because the MAC CE is only in the manner of reporting the load status by using the RRC signaling.
  • the addition of the MAC layer eliminates the processing of the layers between the RRC layer and the MAC layer, which makes the reporting faster and reduces the overhead.
  • the format of the MAC CE is as shown in FIG.
  • FIG. 3 which is a schematic diagram of a MAC CE format provided by the embodiment shown in FIG. 1 , where R is reserved, and the load measurement report is used.
  • the resource load value of the transmission resource pool measured for the first V2V terminal is also shown as a percentage. For example, 5 bits can be used to represent ⁇ 0%, 5%, ..., 95%, 100% ⁇ .
  • 5 bits can be used to represent ⁇ 0%, 5%, ..., 95%, 100% ⁇ .
  • One possible implementation is: 00000 to 0%, 00001 to 5%, ..., and so on, each increment of the binary number represented by 5 bits represents a 5% increase in the percentage of the resource load value.
  • the MAC sub-header corresponding to the MAC CE may use a new logical channel identifier (Logical Channel ID, LCID) to indicate the new MAC CE.
  • LCID Logical Channel ID
  • FIG. 4 it is a schematic diagram of a format of a MAC subheader provided for the example shown in FIG. 1.
  • the same MAC subheader can be multiplexed with the Buffer Status Report (BSR) sent by the V2V terminal.
  • BSR Buffer Status Report
  • FIG. 5 another MAC subheader provided for the example shown in FIG.
  • the specific manner in which the MAC CE and the BSR multiplex the same MAC sub-header is as follows:
  • the base station can distinguish whether the MAC sub-header corresponds to a BSR of a V2V terminal or a V2V terminal measurement report according to the value of the L-domain. In this case, since the BSR length of the vehicle must be greater than 0, the value of all 0s in the L domain will not be the BSR. Therefore, all 0s can be used to indicate that the measurement report sent by the V2V terminal is followed.
  • the resource load value received by the receiving module 12 in the foregoing embodiment may be, for example, a measurement result of the usage rate of the physical resource block (Physical Resource Block, PRB) in the sending resource pool by the first V2V terminal, the RPB.
  • the usage rate can be:
  • M1(T) represents the number of PRBs used in the transmission resource pool for the duration T
  • P(T) represents the total number of PRBs available in the transmission resource pool for the duration T.
  • the amount, T is the duration of the measurement performed by the first V2V terminal.
  • the resource load value received by the receiving module 12 in the foregoing embodiment may also be a measurement result of the collision rate of the PRB in the sending resource pool by the first V2V terminal, and the collision rate of the RPB is specifically:
  • M1(T) represents the number of PRBs used in the transmission resource pool for the duration T
  • M2(T) represents the PRB in the transmission resource pool that collides within the duration T.
  • T is the duration during which the first V2V terminal performs the measurement.
  • FIG. 6 is a schematic structural diagram of a data transmission apparatus according to Embodiment 2 of the present invention.
  • the sending module 11 of the data transmission apparatus provided in this embodiment includes: a first sending unit 14 configured to send a paging message or instruct the first V2V terminal to send Sending a paging message to notify the V2V terminal in the coverage of the base station that the content in the resource control information has been adjusted; the second sending unit 15 is configured to broadcast a second system message carrying the adjusted resource control information, the second The system message is used to indicate that the V2V terminal within the coverage of the base station sends and receives a security message according to the adjusted resource control information, and measures, or measures and transmits, a resource load value of a transmission resource pool broadcast by the second system message.
  • the V2V terminal in the coverage of the base station can measure the resource load value of the sending resource pool. However, only the V2V terminal whose measured resource load value meets the sending condition sends the resource load value, and the resource load value is sent.
  • the V2V terminal can also be the first, third, or fourth V2V terminal in the foregoing embodiment, and the conditions for the transmission are described in the foregoing embodiment, and thus are not described herein again.
  • the paging message may be directly sent by the base station, or the V2V terminal connected to the base station may be indicated by the base station, for example, indicating the foregoing embodiments.
  • the first V2V terminal sends the paging message.
  • the first sending unit 14 may separately send a paging message to each V2V terminal in the coverage of the base station.
  • the base station sends the paging message
  • the V2V terminal in the coverage includes not only the communication module configured on the vehicle. It also includes communication modules configured on other mobile terminals such as mobile phones and notebook computers. Therefore, the base station needs to separately send one paging message to each V2V terminal.
  • the transmission mode occupies normal paging resources, and for each Paging objects all require a paging message to increase the overhead of the system.
  • the embodiment also provides other ways of sending a paging message.
  • the first sending unit 14 may send a paging message in the receiving resource pool, where the paging message is used to indicate that each V2V terminal in the coverage of the base station monitors the paging message in the receiving resource pool; in this embodiment,
  • the security message sent between the V2V terminals has the characteristics of broadcasting. All the V2V terminals can listen to the messages sent by other terminals in the entire receiving resource pool.
  • the first sending unit 14 of the base station specifically sends the message in the receiving resource pool.
  • the paging message not only saves the paging resources allocated by the base station, but also needs only one paging message, and the V2V terminal in the coverage area can listen to it, and does not need to separately send a paging message to each V2V terminal, so that It makes paging easier.
  • the first sending unit 14 may further instruct the first V2V terminal to send the locating information.
  • the first sending unit 14 sends a paging indication message to the first V2V terminal, where the paging indication message is used to indicate that the first V2V terminal according to the paging finger
  • the location information of the message and the paging resource is sent to send a paging message, and the paging message is used to indicate that each V2V terminal in the coverage of the base station is listening to the paging message in the receiving resource pool.
  • the base station is implemented in the specific implementation.
  • a resource may be reserved in the receiving resource pool, that is, a paging resource dedicated to sending the paging message, and the location information of the paging resource is also broadcast by the base station in the first system message, and the V2V terminal accesses the coverage of the base station and then listens.
  • the first system message learns the location information of the paging resource.
  • a special 8Bit address may be specified in the SA message to indicate a paging message, and the address does not carry data; if the base station indicates the first V2V terminal To send the paging message, a paging indicator of 1Bit may be added to the SA message, and the data carried after the SA message is normally sent.
  • the resource for sending the paging message may be dynamically selected, that is, only when a paging message needs to be sent, a resource is selected, which is unnecessary. It is not necessary to reserve, and the first V2V terminal selects the resource transmission by itself, and other V2V terminals within the coverage of the same base station receive the message in the receiving resource pool.
  • the sending resource pool is a subset of the receiving resource pool, and is located in the resource location of the receiving resource pool.
  • the resource control message broadcasted by the base station is usually included in the receiving resource pool.
  • Multiple send resource pools the V2V terminal in the coverage of the base station randomly selects the resource in the resource pool, that is, the V2V terminal randomly selects the sending resource pool in a manner of equal probability, and the load state in each sending resource pool may be considered to be approximate. .
  • each of the sending resource pools includes the same number of resources, the number of V2V terminals in each sending resource pool is the same. If the number of resources in each sending resource pool is different, it may be according to each sending resource pool.
  • the proportion of resource usage is the same as the load status. For example, there are 3 resources in pool 1, and 7 resources in pool 2. If there are about 30% of V2V terminals in pool 1, and about 70% of V2V terminals in pool 2.
  • the load status of the two sending resource pools is the same. Therefore, the resource load value received by the receiving module 12 may include a measurement result of the resource load value of the sending resource pool of the first V2V terminal, and the measurement result may reflect all the sending. The average load status of the resource pool.
  • the resource load value received by the receiving module 12 may also include an average measurement result of the resource load value of the first V2V terminal to the plurality of sending resource pools; correspondingly, the second sending unit 15 broadcasts
  • the second system message is specifically configured to indicate that the V2V terminal in each sending resource pool in the second system message sends and receives a security message according to the adjusted resource control information, to And measuring, or measuring and transmitting, a resource load value in a transmission resource pool broadcast by the second system message.
  • the adjusted resource control information broadcasted by the base station can be used for the V2V terminal in each sending resource pool to send and receive security messages, that is, the V2V terminals in this embodiment are both Located in the sending resource pool.
  • the V2V terminal in the coverage of the base station is not randomly selected to send the resource in the resource pool, for example, may be configured by the base station, and may be specifically configured according to factors such as service delay of the V2V terminal.
  • the configuration may be that the load status in each of the sending resource pools is different. Therefore, the resource load value in each of the sending resource pools needs to be reported separately, that is, the resource load value received by the receiving module 12 may generally include the first
  • the second system message broadcasted by the second sending unit 15 is used to indicate that the V2V terminal in the sending resource pool where the first V2V terminal is located is adjusted according to the result of the measurement of the resource load value of the sending resource pool.
  • the resource control information sends and receives security messages, as well as measuring, or measuring and transmitting the resource load values of the source resource pool in which it is located.
  • the resource load value reported by the first V2V terminal can only reflect the load status of the sending resource pool where the first V2V terminal is located. Therefore, the adjusted resource control information broadcast by the base station can only be used for the first All V2V terminals in the sending resource pool where a V2V terminal is located send security messages.
  • the first V2V terminal in this embodiment can not only measure the resource load value of the transmission resource pool in which the second V2V terminal is located, but also measure the resource load value of the transmission resource pool where the second V2V terminal is located.
  • the second V2V terminal may be a V2V terminal in another transmission resource pool, and the second V2V terminal in this embodiment may be, for example, a plurality of terminals located in different transmission resource pools;
  • the second system message is specifically configured to indicate that the V2V terminal in the sending resource pool where the first V2V terminal and the second V2V terminal are located send and receive security messages according to the adjusted resource control information, and measure, or measure, and send the respective sending resource pools. Resource load value.
  • the base station can learn, according to the information reported by the first V2V terminal, the load status of the measured transmission resource pool, that is, the load status of the transmission resource pool where the first and second V2V terminals are located, and therefore, the base station broadcasts
  • the adjusted resource control information may be used by all the V2V terminals in the sending resource pool where the first and second V2V terminals are located to send the security message, that is, the V2V terminal in this embodiment is located in the partial sending resource pool.
  • a fifth V2V terminal that is in a connection state with the base station may exist in the coverage of the base station, and the base station dynamically allocates resource transmission data for the fifth V2V terminal, instead of using the transmission resource pool broadcast by the base station. Resources, these fifth V2V terminals can also measure The load status in the resource pool is sent and reported to the base station.
  • the capability parameter value of the base station is added to the congestion control parameter of the broadcast module, or the capability domain value of the base station and the load transmission identifier are added to the base station for reporting the load status to the base station.
  • the specific number of the first V2V terminals, the specific transmission mode in which the first V2V terminal reports the resource load value, and the specific implementation manner in which the first V2V terminal measures the resource load value are the same as those in the foregoing embodiment, and therefore are not described herein again.
  • FIG. 7 is a schematic structural diagram of a data transmission apparatus according to Embodiment 3 of the present invention.
  • the data transmission apparatus of this embodiment is suitable for the case of performing V2V communication, and the data transmission apparatus can be implemented by hardware and software, and is usually disposed in each V2V terminal of the V2V communication system through the base station within the coverage area to which it belongs.
  • the message exchanges and performs the congestion control scheme indicated by the base station.
  • the data transmission apparatus provided in this embodiment specifically includes: a receiving module 21, a measuring module 22, and a sending module 23.
  • the receiving module 21 is configured to receive, by the base station, a first system message, where the first system message carries resource control information, where the first system message is used to indicate that the V2V terminal in the coverage of the base station sends and receives the security message according to the resource control information. .
  • the V2V terminal provided in this embodiment can also refer to the application scenario of the V2V communication shown in FIG. 2.
  • the receiving module 21 can receive the first system broadcast by the base station. And receiving the resource control information included in the resource control information, where the resource control information includes the resource pool information and the resource location of the receiving resource pool, where the sending resource pool is a subset of the receiving resource pool, and is located in the receiving resource pool.
  • the resource is selected and sent in the sending resource pool, and the selected resource may be allocated by the base station or randomly selected; the manner in which the V2V terminal receives the data is The receiving resource pool listens for security messages sent by other V2V terminals.
  • the resource control information received by the receiving module 21 may further include a vehicle sending parameter and a congestion control parameter, where the vehicle sending parameter is used to adjust a sending behavior of the subsequent security information, and the congestion control parameter is used to instruct the V2V terminal to measure in the sending resource pool, or Measuring and transmitting the resource load value; or the vehicle transmission parameter and the congestion control parameter may also be pre-configured in the V2V terminal, and the vehicle transmission parameter may include at least one of a transmission time interval and a transmission power of the safety message, and the congestion control parameter A duration and resource load threshold for performing measurements for the V2V terminal may be included.
  • the measuring module 22 is configured to measure a resource load value according to the resource control information.
  • the sending time of the sending of the security message by the sending module 23 may be limited by the sending time interval, so as to reduce the collision probability of sending the security message on the same resource.
  • the generation of the security message is determined by the application layer.
  • the sending module 23 performs the sending operation when the V2V terminal generates the security message, and the sending time interval is specifically a parameter configured for the sending module 23.
  • the transmission time interval is configured, and the sending module 23 sends the security message at the configured time interval.
  • the power of the V2V terminal can also be sent by the sending power to reduce the interference to the vehicle that is far away.
  • the sending time interval and the sending power can be used by the sending module 23 to send the security message.
  • the measuring module 22 can measure the resource load value in the sending resource pool to learn the load status in the sending resource pool broadcast by the base station. The subsequent base station performs congestion on the V2V terminal within its coverage according to the information. System.
  • the sending module 23 is further configured to send, to the base station, a resource load value measured by the measurement module 22, where the resource load value is used to indicate that the base station adjusts the content of the resource control information according to the resource load value; and thus the receiving module 21 is further configured to receive the base station. Adjusted resource control information broadcast to V2V terminals within its coverage. It should be noted that the content adjusted by the base station to the resource control information is not limited to the content of the resource control information broadcasted by the base station. If the vehicle transmission parameter and the congestion control parameter are configured in the V2V terminal, the base station can also adjust and adjust the resource. The subsequent parameters are added to the resource control information.
  • the V2V terminal in this embodiment only reports the resource load value to the base station when the resource load value measured by the measurement module 22 meets the resource load threshold.
  • the resource load threshold may be, for example, a transmission resource pool allocated according to the base station.
  • the bearer capacity is set, and the number of V2V terminals reporting the load status to the base station is controlled by the preset resource load threshold, which is beneficial to reducing the processing load of the base station.
  • the V2V terminal is used as the execution body to describe the specific mode of the V2V communication.
  • the resource load value measured by a part of the V2V terminal meets the resource load threshold, and needs to be
  • the base station reports the load status, and the resource load value measured by another part of the V2V terminal does not meet the resource load threshold, and thus does not establish a connection with the base station.
  • the V2V terminal provided in this embodiment is specifically referred to as a V2V terminal that needs to report the load status to the base station, and the base station can obtain the specific quantity of the V2V terminal to which the information is sent according to the received resource load value, and The load state of the sending resource pool corresponding to the resource load value measured by the V2V terminal is obtained.
  • the sending resource pool may be one or more.
  • the resource load threshold received by the receiving module 21 may include, for example, a first resource load threshold and a second resource load threshold, where the first resource load threshold is an upper threshold that triggers the V2V terminal to report, The second resource load threshold is used to trigger the lower threshold reported by the V2V terminal, and the sending module 23 is specifically configured to send the measurement module to the base station when the resource load value measured by the measurement module 22 is greater than the first resource load threshold or less than the second resource load threshold. 22 measured resource load value. That is to say, the data transmission apparatus provided in this embodiment may report the measured resource load value when the resource of the transmission resource pool is tight, and when the upper threshold is triggered, or may report the resource in the resource pool when the resource is idle and trigger the lower threshold.
  • the resource load value sent by the sending module 23 serves as a basis for the base station to adjust the resource control information, and the base station knows the transmission resource pool corresponding to the resource load value sent by the V2V terminal to which the load state is reported, and each of the known After the resource status of the resource pool is sent, the content of the resource control information is adjusted according to the reporting status of the V2V terminal, and the adjusted resource control information is adapted to the V2V terminal in the current state to send a security message, thereby being in the coverage area.
  • the V2V terminal broadcasts the adjusted content, so that the V2V terminal can transmit and receive the security message by using the resource control information in the current state, so that the V2V terminal performs V2V communication according to the centralized congestion control of the base station, so as to improve resources in each sending resource pool. Utilization.
  • the base station that establishes the connection with the V2V terminal may also be pre-configured with a congestion control threshold, where the threshold is used to macroally measure the load status of the sending resource pool, and the resource load value is specifically used to indicate the resource received by the base station.
  • the threshold is used to macroally measure the load status of the sending resource pool
  • the resource load value is specifically used to indicate the resource received by the base station.
  • the content adjusted by the base station for the resource control information broadcasted by the base station includes at least one of the resource information and the content of the vehicle transmission parameter, where the resource information and the vehicle transmission parameter are transmission resources and transmission manners of the transmission security message specified by the base station to the V2V terminal, and the base station Adjusting the resource information and vehicle transmission parameters related to the transmission of the security message by the V2V terminal by coordinating management, reducing the probability that multiple V2V terminals select the same resource to send the security message, so as to ensure that each base station coverage
  • Each V2V terminal can normally receive the safety message sent by other V2V terminals, thereby improving the safety of vehicle traffic;
  • the content of the adjustment optionally includes one or more of the congestion control parameters, and the parameter is specifically The manner in which the V2V terminal measures the resource load value in the transmission resource pool is specified.
  • the resource information in this embodiment may also include the available frequency and bandwidth information, and the vehicle transmission parameter may further include a modulation and coding format.
  • the embodiment of the present invention does not limit the specific content of the resource control information, as long as it can be used.
  • the V2V terminal indicating the coverage of the same base station transmits and receives the security message in the manner indicated by the base station, and is used to measure the resource load value of the load status in the transmission resource pool broadcasted by the base station, so as to ensure that the base station can cover the V2V in the coverage area.
  • the information that the terminal performs centralized congestion control can be used in the embodiment of the present invention.
  • the new receiving resource pool and the sending resource pool may be on the original frequency and bandwidth.
  • the allocated, or may be allocated on the newly added frequency and bandwidth the V2V terminal may select a resource according to the new joining information; if a new receiving resource pool is also included, the V2V terminal may be in the new receiving resource pool.
  • the data transmission device provided by the embodiment receives the first system message broadcast by the base station by the receiving module, where the first system message indicates that the V2V terminal in the coverage of the base station sends and receives the security message according to the resource control information, and is measured by the measurement module.
  • the sending module sends a resource load threshold measured by the measurement module to the base station, where the resource load threshold is used to indicate that the base station adjusts the content of the resource control information broadcast by the base station according to the resource load value sent by the V2V terminal, and then sends the The module sends the adjusted resource control information to the V2V terminal in the coverage of the base station, so that the changed resource control information is adapted to the V2V terminal in the current state to send and receive the security message, and the V2V terminal in the coverage area is congested.
  • the data transmission device solves the problem that when the D2D communication mode of the prior art is applied to the V2V communication, the communication quality is degraded due to the limited resources in the transmission resource pool, and correspondingly, the communication quality is degraded. Increased resources in each sending resource pool Utilization. Specifically, congestion occurs when the number of vehicles is large, and the probability that multiple vehicles select the same resource to broadcast a security message is increased. This leads to a problem of poor safety of vehicle traffic.
  • the number of V2V terminals that report information to the base station is restricted by setting a resource load threshold in the range of the base station to which the V2V terminal belongs, so as to reduce the processing resource occupied by the reported information and the processing load of the base station;
  • the transmission of the security message by the vehicle transmission parameter broadcasted by the base station is beneficial to reducing the collision probability of the V2V terminal transmitting the security message on the same resource, and at the same time reducing the interference to the far-reaching V2V terminal.
  • FIG. 8 is a schematic structural diagram of another data transmission apparatus according to an embodiment of the present invention.
  • the congestion control parameter received by the receiving module 21 further includes a capability domain of the base station.
  • the value of the capability field for example, may be a positive integer, which is preset according to the processing capability of the base station.
  • the V2V terminal further includes a determining module 24, configured to send, by the sending module 23, the resource measured by the measurement module 22 to the base station. Before the load value, it is determined whether the identity information of the device is an integer multiple of the capability domain value.
  • the specific manner in which the sending module 23 sends the resource load value to the base station is: when the determining module 24 determines that the identifier information of the V2V terminal is the capability domain.
  • the value is an integer multiple
  • the resource load value measured by the measurement module 22 is sent to the base station;
  • the ID information may be, for example, a license plate number of the V2V terminal or a communication-related ID number such as an IMSI, or other types of ID numbers.
  • the ID information may be, for example, a license plate number of the V2V terminal or a communication-related ID number such as an IMSI, or other types of ID numbers.
  • the base station broadcasts its capability threshold, so that the first V2V terminal can determine whether to report the load state, and can also combine the processing method of the capability threshold, thereby reducing the number of V2V terminals reporting the resource load value to the base station.
  • the processing load of the base station is reduced.
  • the base station side multiplies the number of the reported V2V terminals by the preset capability threshold to estimate the total number of V2V terminals whose measured resource load values meet the resource load threshold. Combined with the number of reported resource load values, the comprehensive analysis adjusts the content of the resource control information.
  • the congestion control parameter received by the receiving module 21 may further include a load sending identifier, where the load sending identifier is occupied by, for example, 1 Bit.
  • the resource space is represented by "1" for "reporting” and by "0" for “not reporting”; the judging module 24 is similar to the action performed in the above embodiment, and is used for determining that its own identification information is an integer of the capability domain value.
  • a specific mode of transmitting the resource load value to the base station in the embodiment is: when the determining module 24 determines the V2V end
  • the identifier information of the terminal is an integer multiple of the capability domain value, and when the load transmission identifier is 1, the resource load value measured by the measurement module 22 is sent to the base station; or, when the determining module 24 determines that the identifier information of the V2V terminal is the capability domain value.
  • the value is not an integer multiple, and the load transmission identifier is 0, the resource load value measured by the measurement module 22 is sent to the base station.
  • the V2V terminal measures that the resource load value meets the resource load threshold, it is determined whether to send the measured resource load value to the base station, and the beneficial effects achieved are similar to those in the foregoing embodiment, so Let me repeat.
  • the specific manner in which the sending module 23 sends the measured resource load value to the base station in the embodiment shown in FIG. 7 and FIG. 8 is: sending to the base station through RRC signaling or through the MAC CE.
  • the measured resource load value; the specific implementation manner of the signaling used by the V2V terminal to send the resource load value in this embodiment, and the format of the MAC CE and the format of the MAC sub-header can be implemented as shown in FIG. 3 to FIG. For example, it will not be described here.
  • the resource load value in the embodiment shown in FIG. 7 and FIG. 8 may be a measurement result of the usage rate of the PRB in the transmission resource pool by the measurement module 22, and may refer to the formula (1) in the foregoing embodiment; or
  • the measurement module 22 may refer to the formula (2) in the foregoing embodiment.
  • FIG. 8 is also a schematic structural diagram of a data transmission apparatus according to Embodiment 4 of the present invention.
  • FIG. 8 is further described based on the foregoing embodiment shown in FIG. 7. This embodiment provides a specific manner of transmitting the adjusted resource control information.
  • the paging message may be separately sent by the base station to each V2V terminal in its coverage.
  • the V2V terminal in the coverage includes not only the communication module configured on the vehicle but also the mobile phone. a communication module configured on other mobile terminals such as a notebook computer. Therefore, the base station needs to separately send a paging message to each V2V terminal.
  • the transmission mode occupies normal paging resources and is applicable to each paging object. The need for a paging message increases the overhead of the system.
  • the base station may also send a paging message in its broadcast receiving resource pool, so that each V2V terminal in the coverage of the base station listens to the paging message in the receiving resource pool; because of the security sent between the V2V terminals
  • the message itself has the characteristics of broadcasting. All V2V terminals can listen to messages sent by other terminals in the entire receiving resource pool.
  • the base station sends the paging message in the receiving resource pool, which not only saves the paging resources allocated by the base station, but also saves the paging resources allocated by the base station. Moreover, only one paging message is needed, and the V2V terminals in the coverage area can be monitored, and need not be separately sent to each.
  • the V2V terminal has a paging message, which makes paging easier.
  • the V2V terminal may further send the paging message according to the indication of the base station.
  • the resource control information received by the receiving module 21 further includes the homing in the receiving resource pool.
  • the receiving module 21 is further configured to receive the paging indication message sent by the base station
  • the sending module 23 is further configured to send the location information according to the paging resource received by the receiving module 21 and the paging indication message.
  • the paging message is used to indicate that each V2V terminal in the coverage of the base station monitors, in the receiving resource pool, a second system message that is broadcast by the base station and carries the adjusted resource control information, where the second system message is used.
  • the base station may reserve a resource in the receiving resource pool, that is, a paging resource dedicated to sending the paging message, and the paging resource Location information is also broadcast by the base station a first system message, the terminal enters the coverage of base station V2V known location information of the paging system resources by monitoring the first message.
  • the resource for sending the paging message may be dynamically selected, that is, only when a paging message needs to be sent, a resource is selected, and it is not necessary to Reserved, the V2V terminal selects the resource transmission by itself, and other V2V terminals within the coverage of the same base station receive the message in the receiving resource pool.
  • the sending resource pool is a subset of the receiving resource pool, and is located in the resource location of the receiving resource pool.
  • the resource control message received by the receiving module 21 is received in the resource pool. It usually includes multiple sending resource pools.
  • the V2V terminal in the coverage of the base station randomly selects the resource in the resource pool, that is, the V2V terminal randomly selects the sending resource pool in a manner of equal probability, and the load state in each sending resource pool may be considered to be approximate. Therefore, the measurement module 22 of the data transmission apparatus provided in this embodiment may measure the resource load value of the transmission resource pool in which the resource resource is located according to the resource information and the congestion control parameter, and the measured resource load value may reflect the average of all the transmission resource pools.
  • the load status may also be used to measure the average resource load value of the multiple sending resource pools.
  • the sending module 23 sends the second system message to specifically indicate that the V2V terminal in each sending resource pool in the second system message is adjusted according to the The resource control information sends and receives a security message, and measures, or measures, a resource load value of a transmission resource pool broadcast by the second system message.
  • the resource load value sent by the sending module 23 can reflect the load status of all the sending resource pools as a whole, the adjusted resource control information broadcasted by the base station can be used for each
  • the V2V terminal in the sending resource pool sends a security message, that is, the V2V terminals in this embodiment are all located in the sending resource pool.
  • the V2V terminal in the coverage of the base station is not randomly selected to send the resource in the resource pool, for example, may be configured by the base station, and may be specifically configured according to factors such as service delay of the V2V terminal.
  • the configuration may be considered that the load status in each of the sending resource pools is different. Therefore, the resource load value in each of the sending resource pools needs to be separately reported, that is, the measuring module 22 of the data transmission device provided in this embodiment, specifically
  • the second system message sent by the sending module 23 is specifically used to indicate all V2Vs in the sending resource pool where the V2V terminal to which the data transmission device belongs is correspondingly used to measure the resource load value in the sending resource pool.
  • the terminal sends and receives security messages according to the adjusted resource control information, and measures, or measures and transmits the resource load value of the sending resource pool in which it is located.
  • the resource load value sent by the sending module 23 can only reflect the load status of the transmission resource pool that the measurement module 22 has measured. Therefore, the adjusted resource control information broadcasted by the base station can only be used by the measurement module 22 .
  • the V2V terminal in the sending resource pool that has measured the resource load value sends a security message.
  • the measurement module 22 can not only perform the measurement of the resource load value of the transmission resource pool in which it is located, but also perform the resource load value on the transmission resource pool where the first V2V terminal is located.
  • the first V2V terminal in the present embodiment may be a V2V terminal in another transmission resource pool, and the first V2V terminal in this embodiment may be, for example, a plurality of terminals located in different transmission resource pools;
  • the second system message is specifically used to indicate that the V2V terminal to which the data transmission device belongs and the V2V terminal in the transmission resource pool where the first V2V terminal is located send and receive security messages according to the adjusted resource control information, and measure, measure, and transmit each The resource load value of the sending resource pool.
  • the base station can learn, according to the information sent by the sending module 23, the load status of the measured transmission resource pool, that is, the load status of the V2V terminal to which the data transmission device belongs and the transmission resource pool where the first V2V terminal is located. Therefore, the adjusted resource control information broadcasted by the base station may be used by the V2V terminal to which the measurement module 22 belongs and all the V2V terminals in the transmission resource pool where the first V2V terminal is located to send a security message, that is, the V2V terminal in this embodiment is located. Part of the sending resource pool.
  • the congestion control parameter received by the receiving module 21 in this embodiment may also include the capability domain value of the base station, or the capability domain value of the base station and the load transmission identifier, for flexibly configuring the V2V to report the load status to the base station.
  • the number of the terminals, the specific sending manner in which the sending module 23 of the V2V terminal sends the resource load value in the embodiment, and the specific implementation manner in which the measuring module 22 measures the resource load value are the same as those in the foregoing embodiment, and therefore are not described herein again.
  • FIG. 9 is a schematic structural diagram of a base station according to an embodiment of the present invention.
  • FIG. 10 is a schematic structural diagram of a V2V terminal according to an embodiment of the present invention.
  • the coverage of the base station has at least one V2V in the embodiment shown in FIG. terminal.
  • the base station provided in the foregoing embodiment shown in FIG. 9 specifically includes: a transceiver 31 and a processor 32, and the transceiver 31 is specifically configured to implement the sending module 11 in the foregoing embodiments shown in FIG. 1 and FIG.
  • the processor 32 is specifically configured to implement the functions of the adjustment module 13 in the embodiments shown in FIG. 1 and FIG. 6, and the processor 32 may be, for example, a central processing unit (Central Processing). Unit, abbreviated as: CPU), or an Application Specific Integrated Circuit (ASIC), or one or more integrated circuits that implement the embodiments of the present invention.
  • CPU central processing unit
  • ASIC Application Specific Integrated Circuit
  • the V2V terminal provided by the embodiment shown in FIG. 10 specifically includes: a transceiver 41 and a processor 42, and the transceiver 41 is specifically configured to implement the receiving module 21 and the sending module 23 in the foregoing embodiments shown in FIG. 7 and FIG.
  • the functions of the processor 42 are specifically used to implement the functions of the measurement module 22 and the determination module 24 in the embodiments shown in FIG. 7 and FIG. 8.
  • the processor 42 may be, for example, a CPU or an ASIC. Alternatively, one or more integrated circuits implementing embodiments of the present invention are completed.
  • the embodiment of the present invention further provides a V2V communication system, which specifically includes the base station provided by the embodiment shown in FIG. 9 and the V2V terminal provided by the embodiment shown in FIG. 10, and the base station and the V2V terminal in this embodiment.
  • the operations performed are the same as those performed by the base station and the V2V terminal shown in FIG. 9 and FIG. 10 above, and thus are not described herein again.
  • FIG. 11 is a flowchart of a V2V communication method according to Embodiment 5 of the present invention.
  • the method in this embodiment is applicable to the case of performing V2V communication, and the method may be performed by a base station in a V2V communication system, where the base station is usually implemented in a hardware and software manner, and interacts with a V2V terminal within the coverage of the base station by using a message. Congestion control management.
  • the method of this embodiment includes the following steps:
  • the base station broadcasts a first system message, where the first system message carries resource control information, where the first system message is used to indicate that the V2V terminal in the coverage of the base station sends and receives security information according to the resource control information, and measures the resource load value.
  • the application scenario of the V2V communication shown in FIG. 2 is also referred to.
  • the V2V terminal can receive the first system message and obtain the resource control information contained therein.
  • the control information includes resource information, including the resource pool information and the resource location of the receiving resource pool.
  • the sending resource pool is a subset of the receiving resource pool and is located in the resource location of the receiving resource pool.
  • the resource control information may further include a vehicle sending parameter and a congestion control parameter, where the vehicle sending parameter is used to adjust a sending behavior of the subsequent security information, and the congestion control parameter is used to instruct the V2V terminal to measure, or measure and send the resource load in the sending resource pool.
  • the vehicle transmission parameter and the congestion control parameter may also be pre-configured in the V2V terminal, and the vehicle transmission parameter may include at least one of a transmission time interval and a transmission power of the safety message, and the congestion control parameter may include execution for the V2V terminal.
  • the duration of the measurement and the resource load threshold may be pre-configured in the V2V terminal, and the vehicle transmission parameter may include at least one of a transmission time interval and a transmission power of the safety message, and the congestion control parameter may include execution for the V2V terminal.
  • the base station receives a resource load value sent by the first V2V terminal.
  • the first V2V terminal that establishes a connection with the base station and sends the resource load value to the base station in this embodiment is specifically a V2V terminal whose measured resource load value meets a resource load threshold, and other V2V terminals in the coverage of the base station do not need to report the measurement thereof.
  • Resource load value it should be noted that the number of first V2V terminals may be one or more.
  • the resource load threshold may include a first resource load threshold and a second resource load threshold, where the first V2V terminal is specifically that the measured resource load value is greater than the first resource load threshold, or the measured resource.
  • the load value is smaller than the second resource load threshold, the V2V terminal that transmits the resource load value to the base station.
  • the base station adjusts the content of the resource control information according to the received resource load value.
  • the content adjusted by the base station is not limited to the resource control carried in the first system message.
  • the base station broadcasts the adjusted resource control information to the V2V terminal in the coverage of the base station.
  • the base station adjusts the content of the resource control information according to the reporting situation of the first V2V terminal, and the adjusted resource control information is adapted to the V2V terminal in the current state to send a security message, so that the base station reaches the coverage area.
  • the V2V terminal broadcasts the adjusted content, so that the V2V terminal can use the resource control information in the current state to send a security message, and implement centralized congestion control of the V2V terminal within the coverage of the base station to improve the transmission resource pool. Utilization of resources.
  • the sending resource pool may be one or more.
  • the S130 may include: when the number of the received resource load values is greater than the congestion control threshold, the base station adjusts, adjusts, the content of the resource control information.
  • the content includes at least one of resource information and content of a vehicle transmission parameter, and optionally one or more of congestion control parameters, wherein the vehicle transmission parameter includes at least one of a transmission time interval and a transmission power of the safety message.
  • the congestion control parameter includes a duration and a resource load threshold for the V2V terminal to perform the measurement.
  • the resource information in this embodiment may further include available frequency points and bandwidth information
  • the vehicle transmission parameter may further include a modulation and coding format.
  • the embodiment of the present invention does not limit the specific content of the resource control information, as long as it can be used.
  • the V2V terminal that indicates the coverage of the base station sends and receives the security message in the manner indicated by the base station, and is used to measure the resource load value of the load status in the transmission resource pool broadcasted by the base station, so as to ensure that the base station can cover the V2V terminal in the coverage area.
  • Information for performing centralized congestion control can be used in the embodiments of the present invention.
  • the new receiving resource pool and the sending resource pool may be allocated on the original frequency and bandwidth, or The V2V terminal can select a resource according to the newly added information; if a new receiving resource pool is also included, the V2V terminal can receive the security message in the new receiving resource pool; If the new frequency point, the bandwidth, and the sending resource pool and the receiving resource pool on the new frequency band resource are also included, the V2V terminal may select the resource in the sending resource pool on the new frequency band according to the indication of the information. Receive messages in the new receive resource pool.
  • the V2V communication method provided by the embodiment of the present invention can be raised by the embodiment shown in FIG. 1 of the present invention.
  • the data transmission device is executed, and the steps of the method are corresponding to the functions of the modules of the data transmission device provided by the embodiment of the present invention.
  • the implementation principle and technical effects are similar, and details are not described herein again.
  • the base station when the congestion control parameter further includes the capability domain value of the base station, in S120, the base station specifically receives the resource load value sent by the third V2V terminal, and the third The V2V terminal is a first V2V terminal whose own identification information is an integer multiple of the capability domain value.
  • the base station specifically receives the resource load value sent by the fourth V2V terminal, where the fourth V2V terminal sends the identifier indication to the load, and reports the
  • the identifier information is a first V2V terminal that is an integer multiple of the capability domain value; or, when the fourth V2V terminal indicates that the load transmission identifier is not reported, the identity information of the first V2V terminal is a non-integer multiple of the capability domain value.
  • the content of the capability threshold and the indication manner of the transmission identifier in the embodiment, and the manner in which the first V2V terminal determines whether to send the resource load value are the same as those in the foregoing embodiment, and therefore are not described herein again.
  • the resource load value received by the base station in the S120 of the foregoing embodiment may be sent by the first V2V terminal through RRC signaling or through the MAC CE.
  • the resource load value received by the base station may be a measurement result of the usage rate of the PRB in the sending resource pool by the first V2V terminal, and the reference may be made to the formula (1) in the foregoing embodiment; or For the measurement result of the collision rate of the PRB in the sending resource pool of the first V2V terminal, refer to the formula (2) in the foregoing embodiment.
  • FIG. 12 is a flowchart of another V2V communication method according to an embodiment of the present invention.
  • the V2V communication method provided by the embodiment shown in FIG. 11 the V2V communication method provided by the embodiment shown in FIG.
  • the S140 further includes: S131, the base station sends a paging message, or the base station instructs the first V2V terminal to send the paging message; then the S140 is replaced by: the base station broadcasts the second system message carrying the adjusted resource control information, and the second system message
  • the V2V terminal used to indicate that the coverage of the base station covers the security message according to the adjusted resource control information, and measures, or measures, and transmits the resource load value of the transmission resource pool broadcast by the second system message.
  • the paging message may be directly sent by the base station, or the base station may instruct the first V2V terminal to send the paging message.
  • the method for the base station to send the paging message may be: the base station separately sends a paging message to each V2V terminal in the coverage of the base station; or the base station sends a paging message in the receiving resource pool, where the paging message is used to indicate the base station Each V2V terminal within the coverage monitors the second system message in the receiving resource pool.
  • the base station instructs the first V2V terminal to send
  • the paging message may be in the following manner: the resource control information may further include location information of the paging resource located in the receiving resource pool, and the base station sends a paging indication message to the first V2V terminal, where the paging indication message is used to indicate the first V2V.
  • the terminal sends a paging message according to the paging indication message and the location information of the paging resource, where the paging message is used to indicate that each V2V terminal in the coverage of the base station listens to the second system message in the receiving resource pool.
  • the resource for sending the paging message may be dynamically selected, that is, only when a paging message needs to be sent, a resource is selected, which is unnecessary. It is not necessary to reserve, and the first V2V terminal selects the resource transmission by itself, and other V2V terminals within the coverage of the same base station receive the message in the receiving resource pool.
  • the sending resource pool is a subset of the receiving resource pool, and is located in the resource location of the receiving resource pool.
  • the resource control message broadcasted by the base station is usually included in the receiving resource pool.
  • the V2V terminal in the coverage of the base station randomly selects the resource in the resource pool, that is, the V2V terminal is located in the sending resource pool, and the resource load value received by the base station includes the first V2V terminal sending the resource.
  • the V2V terminal in the resource pool sends and receives security messages according to the adjusted resource control information, and measures, or measures and transmits, the resource load value in the transmission resource pool broadcast by the second system message.
  • the V2V terminal in the coverage of the base station does not randomly select the resource in the resource pool, that is, the resource load value received by the base station when the V2V terminal is located in the partial transmission resource pool.
  • the second system message is used to indicate that the V2V terminal in the sending resource pool where the first V2V terminal is located is sent according to the adjusted resource control information, where the first V2V terminal is configured to transmit the resource load value of the resource pool.
  • the first V2V terminal in this embodiment can not only measure the resource load value of the transmission resource pool in which the second V2V terminal is located, but also measure the resource load value of the transmission resource pool where the second V2V terminal is located.
  • the resource load value received by the base station further includes a measurement result of the resource load value of the sending resource pool where the second V2V terminal is located by the first V2V terminal; correspondingly, the second system message is specifically used to indicate the first V2V terminal and the second V2V.
  • the V2V terminal in the sending resource pool where the terminal is located sends and receives security messages according to the adjusted resource control information, and measures, or measures and sends Send the resource load value of each sending resource pool.
  • the V2V communication method provided by the embodiment of the present invention can be performed by the data transmission apparatus provided by the embodiment shown in FIG. 6 of the present invention, and the steps of the method correspond to the functions of each module of the data transmission apparatus provided by the embodiment of the present invention, and the implementation principle and technology thereof are implemented. The effect is similar and will not be described here.
  • a fifth V2V terminal that is in a connection state with the base station may exist in the coverage of the base station, and the base station dynamically allocates resource transmission data for the fifth V2V terminal, instead of using the transmission resource pool broadcast by the base station.
  • the fifth V2V terminal can also measure the load status in the sending resource pool and report it to the base station.
  • FIG. 13 is a flowchart of a V2V communication method according to Embodiment 6 of the present invention.
  • the method of this embodiment is applicable to the case of performing V2V communication, and the method can be performed by a V2V terminal in a V2V communication system, which is usually implemented in hardware and software, and interacts with a message of a base station within its coverage area.
  • the congestion control scheme indicated by the base station is performed.
  • the method of this embodiment includes the following steps:
  • the first V2V terminal receives a first system message broadcast by the base station, where the first system message carries resource control information, where the first system message is used to indicate that the vehicle-to-vehicle V2V terminal in the coverage of the base station transmits according to the resource control information.
  • Receive security information
  • the application scenario of the V2V communication shown in FIG. 2 is also referred to.
  • the V2V terminal can receive the first system message and obtain the resource control information contained therein.
  • the control information includes resource information, including the resource pool information and the resource location of the receiving resource pool.
  • the sending resource pool is a subset of the receiving resource pool and is located in the resource location of the receiving resource pool.
  • the resource control information may further include a vehicle sending parameter and a congestion control parameter, where the vehicle sending parameter is used to adjust a sending behavior of the subsequent security information, and the congestion control parameter is used to instruct the V2V terminal to measure, or measure and send the resource load in the sending resource pool.
  • the vehicle transmission parameter and the congestion control parameter may also be pre-configured in the V2V terminal, and the vehicle transmission parameter may include at least one of a transmission time interval and a transmission power of the safety message, and the congestion control parameter may include execution for the V2V terminal.
  • the duration of the measurement and the resource load threshold may be pre-configured in the V2V terminal, and the vehicle transmission parameter may include at least one of a transmission time interval and a transmission power of the safety message, and the congestion control parameter may include execution for the V2V terminal.
  • the first V2V terminal measures a resource load value according to the resource control information.
  • the first V2V terminal specifically measures the resource load value on the sending resource pool, and can determine the load status of the measured sending resource pool, and the V2V end in the coverage of the base station. The end measures the resource load value.
  • the first V2V terminal sends the measured resource load value to the base station, where the resource load value is used to instruct the base station to adjust the content of the resource control information according to the resource load value.
  • the first V2V terminal that establishes a connection with the base station and sends the resource load value to the base station in this embodiment is specifically a V2V terminal whose measured resource load value meets a resource load threshold, and other V2V terminals in the coverage of the base station do not need to report the measurement thereof.
  • Resource load value it should be noted that the number of first V2V terminals may be one or more.
  • S230 when the resource load threshold includes the first resource load threshold and the second resource load threshold, S230 includes: the first V2V terminal is greater than the first resource load threshold or smaller than the second resource load value.
  • the resource load value is sent to the base station.
  • the first V2V terminal receives the adjusted resource control information broadcast by the base station to the V2V terminal in the coverage of the base station.
  • the content adjusted by the base station to the resource control information is not limited to the content of the resource control information broadcasted by the base station. If the vehicle transmission parameter and the congestion control parameter are configured in the V2V terminal, the base station may also adjust the same, and The adjusted parameters are added to the resource control information.
  • the base station in this embodiment may also be pre-configured with a congestion control threshold, where the threshold is used to macroally measure the load status of the sending resource pool, and the number of resource load values received by the base station is greater than the congestion control threshold.
  • adjusting the content of the resource control information where the adjusted content includes at least one of the resource information and the content of the vehicle sending parameter, and optionally includes one or more of the congestion control parameters, where the vehicle sends the parameter Including at least one of a transmission time interval and a transmission power of the security message, the congestion control parameter includes a duration and a resource load threshold for the V2V terminal to perform the measurement.
  • the resource information in this embodiment may also include the available frequency and bandwidth information, and the vehicle transmission parameter may further include a modulation and coding format.
  • the embodiment of the present invention does not limit the specific content of the resource control information, as long as it can be used.
  • the V2V terminal indicating the coverage of the same base station transmits and receives the security message in the manner indicated by the base station, and is used to measure the resource load value of the load status in the transmission resource pool broadcasted by the base station, so as to ensure that the base station can cover the V2V in the coverage area.
  • the information that the terminal performs centralized congestion control can be used in the embodiment of the present invention.
  • the V2V terminal receives the adjusted resource control information and adds a new receiving resource pool and a sending resource pool
  • the new receiving resource pool and the sending resource pool may be in the original The frequency and bandwidth allocated, or allocated on the newly added frequency and bandwidth
  • the V2V terminal can select resources according to the new joining information; if a new receiving resource pool is also included, the V2V terminal can The new receiving resource pool receives the security message; if it also includes the new frequency point, the bandwidth, and the sending resource pool and the receiving resource pool on the new frequency band resource, the V2V terminal can be new according to the indication of the information.
  • the resource is selected in the transmission resource pool on the frequency band, and the message is received in the new reception resource pool.
  • the V2V communication method provided by the embodiment of the present invention can be performed by the data transmission apparatus provided by the embodiment shown in FIG. 7 of the present invention, and the steps of the method correspond to the functions of each module of the data transmission apparatus provided by the embodiment of the present invention, and the implementation principle and technology thereof are implemented. The effect is similar and will not be described here.
  • FIG. 14 is a flowchart of still another V2V communication method according to the embodiment of the present invention.
  • the control parameter further includes a capability domain value of the base station, and before S230, the method further includes: S221, the first V2V terminal determines whether its own identification information is an integer multiple of the capability domain value; correspondingly, the S230 is replaced by: When the V2V terminal determines that its own identification information is an integer multiple of the capability domain value, the V2V terminal sends the measured resource load value to the base station.
  • FIG. 15 is a flowchart of still another V2V communication method according to an embodiment of the present invention.
  • the congestion control parameter further includes a capability domain value and a load transmission identifier of the base station, and before S230, the method further includes: S221, the first V2V terminal determines that its own identification information is an integer multiple or a non-integer multiple of the capability domain value; S230 is replaced by: when the first V2V terminal determines that its own identification information is an integer multiple of the capability domain value, and the load transmission identifier indicates that the report is reported, the measured resource load value is sent to the base station; or, when the first V2V When the terminal determines that its own identity information is a non-integer multiple of the capability domain value, and the load transmission identifier indicates that the packet is not reported, the measured resource load value is sent to the base station.
  • the V2V terminal measures that the resource load value meets the resource load threshold, it is determined whether to
  • the manner in which the first V2V terminal sends the resource load value may include, for example, the first V2V terminal transmitting the measured resource load value to the base station through RRC signaling or through the MAC CE.
  • S220 in the embodiment shown in FIG. 13 to FIG. 15 may be: a first V2V terminal.
  • the usage of the PRB in the sending resource pool is measured, and the measured resource load value may be referred to the formula (1) in the foregoing embodiment; or the first V2V terminal may measure the collision rate of the PRB in the sending resource pool.
  • the measured resource load value reference may be made to the formula (2) in the above embodiment.
  • the method provided in this embodiment further includes: the first V2V terminal Receiving a paging indication message sent by the base station; and sending a paging message according to the location information of the paging resource and the paging indication message, where the paging message is used to indicate that each V2V terminal in the coverage of the base station receives the monitoring base station broadcast in the resource pool.
  • a second system message carrying the adjusted resource control information where the second system message is used to indicate that the V2V terminal in the coverage of the base station sends and receives the security message according to the adjusted resource control information, and measures, or measures, and transmits.
  • the resource load value of the sending resource pool broadcast by the second system message is used to indicate that the V2V terminal in the coverage of the base station sends and receives the security message according to the adjusted resource control information, and measures, or measures, and transmits.
  • the resource for sending the paging message may be dynamically selected, that is, only when a paging message needs to be sent, a resource is selected, which is unnecessary. It is not necessary to reserve, and the first V2V terminal selects the resource transmission by itself, and other V2V terminals within the coverage of the same base station receive the message in the receiving resource pool.
  • the sending resource pool is a subset of the receiving resource pool, and is located in the resource location of the receiving resource pool.
  • the receiving resource pool is received. It usually includes multiple sending resource pools.
  • the V2V terminal in the coverage of the base station randomly selects the resource in the resource pool, that is, the V2V terminal is located in the sending resource pool, and the S220 may be replaced by: the first V2V terminal measures the sending resource according to the resource control information.
  • the resource load value of the pool, or the average resource load value of the multiple sending resource pools; correspondingly, the second system message is specifically used to indicate that the V2V terminal in each sending resource pool in the second system message is based on the adjusted resource.
  • the control information transmits and receives a security message, and measures, or measures and transmits, a resource load value of a transmission resource pool broadcast by the second system message.
  • the V2V terminal in the coverage of the base station is not randomly selected to send the resource in the resource pool, that is, the V2V terminal is located in the partial transmission resource pool, and the S220 may be replaced by:
  • the V2V terminal is configured to measure the resource load value in the sending resource pool according to the resource control information.
  • the second system message is specifically used to indicate that all V2V terminals in the sending resource pool where the first V2V terminal is located are sent according to the adjusted resource control information. And receiving security messages, as well as measuring, or measuring and transmitting resource load values for the source resource pool in which they are located.
  • the first V2V terminal in this embodiment can not only measure the resource load value of the transmission resource pool in which the second V2V terminal is located, but also measure the resource load value of the transmission resource pool where the second V2V terminal is located.
  • the second system message is specifically configured to indicate that the V2V terminal in the sending resource pool where the first V2V terminal and the second V2V terminal are located send and receive security messages according to the adjusted resource control information, and measure, or measure, and send the respective sending resources.
  • the resource load value of the pool is specifically configured to indicate that the V2V terminal in the sending resource pool where the first V2V terminal and the second V2V terminal are located send and receive security messages according to the adjusted resource control information, and measure, or measure, and send the respective sending resources.
  • the V2V communication method provided by the embodiment of the present invention can be performed by the data transmission apparatus provided by the embodiment shown in FIG. 8 of the present invention, and the steps of the method correspond to the functions of each module of the data transmission apparatus provided by the embodiment of the present invention, and the implementation principle and technology thereof are implemented. The effect is similar and will not be described here.
  • the aforementioned program can be stored in a computer readable storage medium.
  • the program when executed, performs the steps including the foregoing method embodiments; and the foregoing storage medium includes various media that can store program codes, such as a ROM, a RAM, a magnetic disk, or an optical disk.

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Abstract

本发明实施例提供一种数据传输装置、V2V通信系统及方法。数据传输装置包括：发送模块广播资第一系统消息，以使基站覆盖范围内的V2V终端发送安全消息和测量资源负载值，接收模块接收第一V2V终端发送的资源负载值；调整模块对资源控制信息的内容进行调整，从而发送模块广播所述已调整的资源控制信息。

Description

数据传输装置、V2V通信系统及方法 技术领域
本发明实施例涉及通信技术，尤其涉及一种数据传输装置、V2V通信系统及方法。
背景技术
驾驶出行给人们的生活带来了极大的便利，汽车的普及程度也随之提高，但车辆数量迅速增加也引发了一系列问题，比如城市交通拥堵、交通事故频发、环境质量变差等。因此，智能交通系统(Intelligent Transportation System，简称为：ITS)成为汽车行业的重要发展方向。
车辆到车辆(Vehicle to Vehicle，简称为：V2V)通信作为未来ITS中的重要通信方式，提出了一种理想化的设想，即，车辆可以通过该V2V通信技术来及时获取路况信息或接收信息服务；具体地，车辆通过V2V通信，可以将自身的速度、位置、行驶方向、急刹车等安全消息广播给周围车辆，接收该安全类信息的车辆，对可能发生的危险进行预判，并向驾驶员及时发出预警。目前已提出将现有的长期演进(Long Term Evolution，简称为：LTE)网络系统中的设备到设备(Device-to-Device，简称为：D2D)通信，即LTE D2D中的通信方式应用于V2V通信中。
然而，将现有技术的D2D通信的方式应用于V2V通信时，由于发送资源池中的资源有限，而造成车辆数目较多时通信质量下降的问题。
发明内容
本发明实施例提供一种数据传输装置、V2V通信系统及方法，以解决将现有技术的终端在发送资源池中进行D2D通信的方式应用于V2V通信时，由于发送资源池中的资源有限，而造成车辆数目较多时通信质量下降的问题。
第一方面，本发明实施例提供一种数据传输装置，包括：
发送模块，用于广播第一系统消息，所述第一系统消息携带所述资源控制信息，所述第一系统消息用于指示所述基站覆盖范围内的V2V终端根据所 述资源控制信息发送和接收安全信息，以及测量资源负载值；
接收模块，用于接收第一V2V终端发送的资源负载值；
调整模块，用于根据所述接收模块接收到的资源负载值对所述资源控制信息的内容进行调整；
所述发送模块，还用于向所述基站覆盖范围内的V2V终端广播所述已调整的资源控制信息。
在第一方面的第一种可能的实现方式中，所述发送模块广播的所述资源控制信息包括资源信息，所述资源信息包括接收资源池的资源位置和发送资源池的资源位置。
在第一方面的第二种可能的实现方式中，所述发送模块广播的所述资源控制信息包括资源信息、车辆发送参数和拥塞控制参数，所述资源信息包括接收资源池的资源位置和发送资源池的资源位置，所述车辆发送参数用于调整后续安全信息的发送行为，所述拥塞控制参数用于指示所述V2V终端在所述发送资源池中测量、或测量和发送所述资源负载值。
根据第一方面的第一种或第二种可能的实现方式，在第三种可能的实现方式中，当所述基站中预设有拥塞控制阈值时，所述调整模块，具体用于在所述接收模块接收到的资源负载值的数量大于所述拥塞控制阈值时，对所述资源控制信息的内容进行调整，所述调整的内容包括所述资源信息和所述车辆发送参数的内容中的至少一项，还选择性的包括所述拥塞控制参数中的一项或多项，其中，所述车辆发送参数包括所述安全消息的发送时间间隔和发送功率中的至少一项，所述拥塞控制参数包括用于所述V2V终端执行测量的持续时间和资源负载阈值。
根据第一方面的第三种可能的实现方式，在第四种可能的实现方式中，当所述资源负载阈值包括第一资源负载阈值和第二资源负载阈值时，所述第一V2V终端具体为测得的资源负载值大于所述第一资源负载阈值，或者测得的资源负载值小于所述第二资源负载阈值时，向所述基站发送所述资源负载值的V2V终端。
根据第一方面、第一方面的第一种到第四种可能的实现方式中任意一种，在第五种可能的实现方式中，所述发送模块包括第一发送单元，用于发送寻呼消息，或者指示所述第一V2V终端发送寻呼消息；
第二发送单元，用于广播携带有所述已调整的资源控制信息的第二系统消息，所述第二系统消息用于指示所述基站覆盖范围内的所述V2V终端根据所述已调整的资源控制信息发送和接收所述安全消息，以及测量、或测量和发送所述第二系统消息所广播的发送资源池的资源负载值。
根据第一方面的第五种可能的实现方式，在第六种可能的实现方式中，所述发送资源池的资源位置位于所述接收资源池的资源位置中，当所述接收资源池中包括多个所述发送资源池，并且所述V2V终端均位于所述发送资源池中时，所述接收模块接收到的资源负载值包括所述第一V2V终端对其所在发送资源池的资源负载值的测量结果，或者包括所述第一V2V终端对所述多个发送资源池的资源负载值的平均测量结果；
则所述第二系统消息具体用于指示所述第二系统消息中每个所述发送资源池中的V2V终端根据所述已调整的资源控制信息发送和接收所述安全消息，以及测量、或测量和发送所述第二系统消息所广播的发送资源池中的资源负载值。
根据第一方面的第五种可能的实现方式，在第七种可能的实现方式中，所述发送资源池的资源位置位于所述接收资源池的资源位置中，当所述接收资源池中包括多个所述发送资源池，并且所述V2V终端位于部分所述发送资源池中时，所述接收模块接收到的资源负载值包括所述第一V2V终端对其所在发送资源池的资源负载值的测量结果；
则所述第二系统消息具体用于指示所述第一V2V终端所在发送资源池中的V2V终端根据所述已调整的资源控制信息发送和接收所述安全消息，以及测量、或测量和发送其所在发送资源池的资源负载值。
根据第一方面的第七种可能的实现方式，在第八种可能的实现方式中，所述接收模块接收到的资源负载值还包括所述第一V2V终端对第二V2V终端所在发送资源池的资源负载值的测量结果；
则所述第二系统消息具体用于指示所述第一V2V终端和所述第二V2V终端所在发送资源池中的V2V终端根据所述已调整的资源控制信息发送和接收所述安全消息，以及测量、或测量和发送各自所在发送资源池的资源负载值。
根据第一方面的第五种可能的实现方式，在第九种可能的实现方式中， 所述第一发送单元用于发送寻呼消息，具体包括：向所述基站覆盖范围内的每个V2V终端分别发送所述寻呼消息；或者，在所述接收资源池中发送所述寻呼消息，所述寻呼消息用于指示所述基站覆盖范围内的每个V2V终端均在所述接收资源池中监听所述第二系统消息。
根据第一方面的第五种可能的实现方式，在第十种可能的实现方式中，当所述资源控制信息中还包括位于所述接收资源池中的寻呼资源的位置信息时，所述第一发送单元用于指示所述第一V2V终端发送寻呼消息，具体包括：向所述第一V2V终端发送寻呼指示消息，所述寻呼指示消息用于指示所述第一V2V终端根据所述寻呼指示消息和所述寻呼资源的位置信息发送所述寻呼消息，所述寻呼消息用于指示所述基站覆盖范围内的每个V2V终端均在所述接收资源池中监听所述第二系统消息。
根据第一方面、第一方面的第一种到第十种可能的实现方式中任意一种，在第十一种可能的实现方式中，所述接收模块接收到的资源负载值为所述第一V2V终端对所述发送资源池中物理资源块PRB的使用率的测量结果，所述RPB的使用率具体为：
Figure PCTCN2015079814-appb-000001
其中，所述M1(T)表示所述发送资源池中，在持续时间T内已使用的PRB的数量，所述P(T)表示所述发送资源池中，在持续时间T内可用的PRB的总量，T为所述第一V2V终端执行测量的持续时间；或者，
所述接收模块接收到的资源负载值为所述第一V2V终端对所述发送资源池中物理资源块PRB的碰撞率的测量结果，所述RPB的碰撞率具体为：
Figure PCTCN2015079814-appb-000002
其中，所述M1(T)表示所述发送资源池中，在持续时间T内已使用的PRB的数量，所述M2(T)表示所述发送资源池中，在持续时间T内发生碰撞的PRB的数量，T为所述第一V2V终端执行测量的持续时间。
根据第一方面、第一方面的第一种到第十一种可能的实现方式中任意一种，在第十二种可能的实现方式中，当所述拥塞控制参数中还包括所述基站的能力域值时，所述接收模块具体接收到第三V2V终端发送的资源负载值，所述第三V2V终端为自身的标识信息是所述能力域值的整数倍的第一V2V 终端。
根据第一方面的第十二种可能的实现方式，在第十三种可能的实现方式中，当所述拥塞控制参数中还包括负载发送标识时，所述接收模块具体接收到第四V2V终端发送的资源负载值，其中，所述第四V2V终端为所述负载发送标识指示为上报时，自身的标识信息是所述能力域值的整数倍的第一V2V终端；或者，所述第四V2V终端为所述负载发送标识指示为不上报时，自身的标识信息是所述能力域值的非整数倍的第一V2V终端。
根据第一方面、第一方面的第一种到第十三种可能的实现方式中任意一种，在第十四种可能的实现方式中，所述接收模块接收到的资源负载值为所述第一V2V终端通过无线资源控制RRC信令或者通过媒体介入控制的控制信元MAC CE发送的。
第二方面，本发明实施例提供一种数据传输装置，设置于基站覆盖范围内的每个车辆到车辆V2V终端中，所述数据传输装置包括：
接收模块，用于接收所述基站广播的第一系统消息，所述第一系统消息携带有资源控制信息，所述第一系统消息用于指示所述基站覆盖范围内的所述V2V终端根据所述资源控制信息发送和接收安全信息；
测量模块，用于根据所述资源控制信息测量资源负载值；
发送模块，用于向所述基站发送所述测量模块测得的资源负载值，所述资源负载值用于指示所述基站根据所述资源负载值对所述资源控制信息的内容进行调整；
所述接收模块，还用于接收所述基站向所述基站覆盖范围内的所述V2V终端广播的所述已调整的资源控制信息。
在第二方面的第一种可能的实现方式中，所述接收模块接收到的所述资源控制信息包括资源信息，所述资源信息包括接收资源池的资源位置和发送资源池的资源位置。
在第二方面的第二种可能的实现方式中，所述接收模块接收到的所述资源控制信息包括资源信息、车辆发送参数和拥塞控制参数，所述资源信息包括接收资源池的资源位置和发送资源池的资源位置，所述车辆发送参数用于调整后续安全信息的发送行为，所述拥塞控制参数用于指示所述V2V终端在所述发送资源池中测量、或测量和发送所述资源负载值。
根据第二方面的第一种或第二种可能的实现方式，在第三种可能的实现方式中，当所述基站中预设有拥塞控制阈值时，所述资源负载值具体用于指示所述基站在接收到的所述资源负载值的数量大于所述拥塞控制阈值时，对所述资源控制信息的内容进行调整，所述调整的内容包括所述资源信息和所述车辆发送参数的内容中的至少一项，还选择性的包括所述拥塞控制参数中的一项或多项，其中，所述车辆发送参数包括所述安全消息的发送时间间隔和发送功率中的至少一项，所述拥塞控制参数包括用于所述V2V终端执行测量的持续时间和资源负载阈值。
根据第二方面的第三种可能的实现方式，在第四种可能的实现方式中，当所述资源负载阈值包括第一资源负载阈值和第二资源负载阈值时，所述发送模块，具体用于在所述测量模块测得的资源负载值大于所述第一资源负载阈值或者小于所述第二资源负载阈值时，向所述基站发送所述测量模块测得的资源负载值。
根据第二方面、第二方面的第一种到第四种可能的实现方式中任意一种，在第五种可能的实现方式中，当所述接收模块接收的资源控制信息中还包括位于所述接收资源池中的寻呼资源的位置信息时，所述接收模块，还用于接收所述基站发送的寻呼指示消息；
则所述发送模块，还用于根据所述接收模块接收的寻呼资源的位置信息和寻呼指示消息发送寻呼消息，所述寻呼消息用于指示所述基站覆盖范围内的每个V2V终端均在所述接收资源池中监听所述基站广播的携带有所述已调整的资源控制信息的第二系统消息，所述第二系统消息用于指示所述基站覆盖范围内的所述V2V终端根据所述已调整的资源控制信息发送和接收所述安全消息，以及测量、或测量和发送所述第二系统消息所广播的发送资源池的资源负载值。
根据第二方面的第五种可能的实现方式，在第六种可能的实现方式中，所述发送资源池的资源位置位于所述接收资源池的资源位置中，当所述接收资源池中包括多个所述发送资源池，并且所述V2V终端均位于所述发送资源池中时，所述测量模块，具体用于所述资源控制信息测量其所在发送资源池的资源负载值，或者测量所述多个发送资源池的平均资源负载值；
则所述第二系统消息具体用于指示所述第二系统消息中的每个所述发送 资源池中的V2V终端根据所述已调整的资源控制信息发送和接收所述安全消息，以及测量、或测量和发送所述第二系统消息所广播的发送资源池的资源负载值。
根据第二方面的第五种可能的实现方式，在第七种可能的实现方式中，所述发送资源池的资源位置位于所述接收资源池的资源位置中，当所述接收资源池中包括多个所述发送资源池，并且所述V2V终端位于部分所述发送资源池中时，所述测量模块，具体用于根据所述资源控制信息测量其所在发送资源池中的资源负载值；
则所述第二系统消息具体用于指示所述数据传输装置所属V2V终端所在发送资源池中的所有V2V终端根据所述已调整的资源控制信息发送和接收所述安全消息，以及测量、或测量和发送其所在发送资源池的资源负载值。
根据第二方面的第七种可能的实现方式，在第八种可能的实现方式中，所述测量模块，还用根据所述资源控制信息测量第一V2V终端所在发送资源池的资源负载值；
则所述第二系统消息具体用于指示所述数据传输装置所属V2V终端和所述第一V2V终端所在发送资源池中的V2V终端根据所述已调整的资源控制信息发送和接收所述安全消息，以及测量、或测量和发送各自所在发送资源池的资源负载值。
根据第二方面、第二方面的第一种到第八种可能的实现方式中任意一种，在第九种可能的实现方式中，所述测量模块，具体用于对所述发送资源池中物理资源块PRB的使用率进行测量，测得的所述资源负载值具体为：
Figure PCTCN2015079814-appb-000003
其中，所述M1(T)表示所述发送资源池中，在持续时间T内已使用的PRB的数量，所述P(T)表示所述发送资源池中，在持续时间T内可用的PRB的总量，T为所述数据传输装置所属的V2V终端执行测量的持续时间；或者，
所述测量模块，具体用于对所述发送资源池中物理资源块PRB的碰撞率进行测量，测得的所述资源负载值具体为：
Figure PCTCN2015079814-appb-000004
其中，所述M1(T)表示所述发送资源池中，在持续时间T内已使用的PRB 的数量，所述M2(T)表示所述发送资源池中，在持续时间T内发生碰撞的PRB的数量，T为所述数据传输装置所属的V2V终端执行测量的持续时间。
根据第二方面、第二方面的第一种到第九种可能的实现方式中任意一种，在第十种可能的实现方式中，当所述接收模块接收到的拥塞控制参数中还包括所述基站的能力域值时，所述数据传输装置还包括：判断模块，用于在所述发送模块向所述基站发送所述测量模块所测得的资源负载值之前，判断其所属V2V终端的标识信息是否为所述能力域值的整数倍；
则所述发送模块用于向所述基站发送所述资源负载值，具体包括：当所述判断模块判断出其所属V2V终端的标识信息为所述能力域值的整数倍时，向所述基站发送所述测量模块测得的资源负载值。
根据第二方面的第十种可能的实现方式，在第十一种可能的实现方式中，当所述拥塞控制参数中还包括负载发送标识时，所述判断模块，具体用于在所述发送模块向所述基站发送所述测量模块所测得的资源负载值之前，判断其所属V2V终端的标识信息为所述能力域值的整数倍或非整数倍；
则所述发送模块用于向所述基站发送所述资源负载值，具体包括：当所述判断模块判断出其所属V2V终端的标识信息为所述能力域值的整数倍，以及所述负载发送标识指示为上报时，向所述基站发送所述测量模块测得的资源负载值；或者，
当所述判断模块判断出其所属V2V终端的标识信息为所述能力域值的非整数倍，以及所述负载发送标识指示为不上报时，向所述基站发送所述测量模块测得的资源负载值。
根据第二方面、第二方面的第一种到第十一种可能的实现方式中任意一种，在第十二种可能的实现方式中，所述发送模块用于向所述基站发送所述资源负载值，具体包括：通过无线资源控制RRC信令或者通过媒体介入控制的控制信元MAC CE向所述基站发送所述资源负载值。
第三方面，本发明实施例提供一种车辆到车辆通信系统，包括：基站和至少一个车辆到车辆V2V终端，所述基站中设置有如上述第一方面中任一项所述的数据传输装置，每个所述V2V终端中设置有如上述第二方面中任一项所述的数据传输装置。
第四方面，本发明实施例提供一种车辆到车辆通信方法，包括：
所述基站广播第一系统消息，所述第一系统消息携带所述资源控制信息，所述第一系统消息用于指示所述基站覆盖范围内的V2V终端根据所述资源控制信息发送和接收安全信息，以及测量资源负载值；
所述基站接收第一V2V终端发送的资源负载值；
所述基站根据所述接收到的资源负载值对所述资源控制信息的内容进行调整；
所述基站向所述基站覆盖范围内的V2V终端广播所述已调整的资源控制信息。
在第四方面的第一种可能的实现方式中，所述资源控制信息包括资源信息，所述资源信息包括接收资源池的资源位置和发送资源池的资源位置。
在第四方面的第二种可能的实现方式中，所述资源控制信息包括资源信息、车辆发送参数和拥塞控制参数，所述资源信息包括接收资源池的资源位置和发送资源池的资源位置，所述车辆发送参数用于调整后续安全信息的发送行为，所述拥塞控制参数用于指示所述V2V终端在所述发送资源池中测量、或测量和发送所述资源负载值。
根据第四方面的第一种或第二种可能的实现方式，在第三种可能的实现方式中，当基站中预设有拥塞控制阈值时，所述基站根据所述接收到的资源负载值对所述资源控制信息的内容进行调整，包括：
所述基站在所述接收到的资源负载值的数量大于所述拥塞控制阈值时，对所述资源控制信息的内容进行调整，所述调整的内容包括所述资源信息和所述车辆发送参数的内容中的至少一项，还选择性的包括所述拥塞控制参数中的一项或多项，其中，所述车辆发送参数包括所述安全消息的发送时间间隔和发送功率中的至少一项，所述拥塞控制参数包括用于所述V2V终端执行测量的持续时间和资源负载阈值。
根据第四方面的第三种可能的实现方式，在第四种可能的实现方式中，当所述资源负载阈值包括第一资源负载阈值和第二资源负载阈值时，所述第一V2V终端具体为测得的资源负载值大于所述第一资源负载阈值，或者测得的资源负载值小于所述第二资源负载阈值时，向基站发送资源负载值的V2V终端。
根据第四方面、第四方面的第一种到第四种可能的实现方式中任意一种， 在第五种可能的实现方式中，还包括：
所述基站发送寻呼消息，或者所述基站指示所述第一V2V终端发送寻呼消息；
所述基站向所述基站覆盖范围内的V2V终端广播所述已调整的资源控制信息，包括：
所述基站广播携带有所述已调整的资源控制信息的第二系统消息，所述第二系统消息用于指示所述基站覆盖范围内的所述V2V终端根据所述已调整的资源控制信息发送和接收所述安全消息，以及测量、或测量和发送所述第二系统消息所广播的发送资源池的资源负载值。
根据第四方面的第五种可能的实现方式，在第六种可能的实现方式中，所述发送资源池的资源位置位于所述接收资源池的资源位置中，当所述接收资源池中包括多个所述发送资源池，并且所述V2V终端均位于所述发送资源池中时，所述基站接收到的所述资源负载值包括所述第一V2V终端对其所在发送资源池的资源负载值的测量结果，或者包括所述第一V2V终端对所述多个发送资源池的资源负载值的平均测量结果；
则所述第二系统消息具体用于指示所述第二系统消息中每个所述发送资源池中的V2V终端根据所述已调整的资源控制信息发送和接收所述安全消息，以及测量、或测量和发送所述第二系统消息所广播的发送资源池中的资源负载值。
根据第四方面的第五种可能的实现方式，在第七种可能的实现方式中，所述发送资源池的资源位置位于所述接收资源池的资源位置中，当所述接收资源池中包括多个所述发送资源池，并且所述V2V终端位于部分所述发送资源池中时，所述基站接收到的所述资源负载值包括所述第一V2V终端对其所在发送资源池的资源负载值的测量结果；
则所述第二系统消息具体用于指示所述第一V2V终端所在发送资源池中的V2V终端根据所述已调整的资源控制信息发送和接收所述安全消息，以及测量、或测量和发送其所在发送资源池的资源负载值。
根据第四方面的第七种可能的实现方式，在第八种可能的实现方式中，所述基站接收到的所述资源负载值还包括所述第一V2V终端对第二V2V终端所在发送资源池的资源负载值的测量结果；
则所述第二系统消息具体用于指示所第一V2V终端和所述第二V2V终端所在发送资源池中的V2V终端根据所述已调整的资源控制信息发送和接收所述安全消息，以及测量、或测量和发送各自所在发送资源池的资源负载值。
根据第四方面的第五种可能的实现方式，在第九种可能的实现方式中，所述基站发送寻呼消息，包括：
所述基站向所述基站覆盖范围内的每个V2V终端分别发送所述寻呼消息；或者，
所述基站在所述接收资源池中发送所述寻呼消息，所述寻呼消息用于指示所述基站覆盖范围内的每个V2V终端均在所述接收资源池中监听所述第二系统消息。
根据第四方面的第五种可能的实现方式，在第十种可能的实现方式中，当所述资源控制信息中还包括位于所述接收资源池中的寻呼资源的位置信息时，所述基站指示所述第一V2V终端发送寻呼消息，包括：
所述基站向所述第一V2V终端发送寻呼指示消息，所述寻呼指示消息用于指示所述第一V2V终端根据所述寻呼指示消息和所述寻呼资源的位置信息发送所述寻呼消息，所述寻呼消息用于指示所述基站覆盖范围内的每个V2V终端均在所述接收资源池中监听所述第二系统消息。
根据第四方面、第四方面的第一种到第十种可能的实现方式中任意一种，在第十一种可能的实现方式中，所述基站接收到的所述资源负载值为所述第一V2V终端对所述发送资源池中物理资源块PRB的使用率的测量结果，所述RPB的使用率具体为：
Figure PCTCN2015079814-appb-000005
其中，所述M1(T)表示所述发送资源池中，在持续时间T内已使用的PRB的数量，所述P(T)表示所述发送资源池中，在持续时间T内可用的PRB的总量，T为所述第一V2V终端执行测量的持续时间；或者，
所述基站接收到的所述资源负载值为所述第一V2V终端对所述发送资源池中物理资源块PRB的碰撞率的测量结果，所述RPB的碰撞率具体为：
Figure PCTCN2015079814-appb-000006
其中，所述M1(T)表示所述发送资源池中，在持续时间T内已使用的PRB 的数量，所述M2(T)表示所述发送资源池中，在持续时间T内发生碰撞的PRB的数量，T为所述第一V2V终端执行测量的持续时间。
根据第四方面、第四方面的第一种到第十一种可能的实现方式中任意一种，在第十二种可能的实现方式中，当所述拥塞控制参数中还包括所述基站的能力域值时，所述基站具体接收到第三V2V终端发送的资源负载值，所述第三V2V终端为自身的标识信息是所述能力域值的整数倍的第一V2V终端。
根据第四方面的第十二种可能的实现方式，在第十三种可能的实现方式中，当所述拥塞控制参数中还包括负载发送标识时，所述基站具体接收到第四V2V终端发送的资源负载值，其中，所述第四V2V终端为所述负载发送标识指示为上报时，自身的标识信息是所述能力域值的整数倍的第一V2V终端；或者，所述第四V2V终端为所述负载发送标识指示为不上报时，自身的标识信息是所述能力域值的非整数倍的第一V2V终端。
根据第四方面、第四方面的第一种到第十三种可能的实现方式中任意一种，在第十四种可能的实现方式中，所述基站接收到的所述资源负载值为所述第一V2V终端通过无线资源控制RRC信令或者通过媒体介入控制的控制信元MAC CE发送的。
第五方面，本发明实施例提供一种车辆到车辆通信方法，包括：
第一V2V终端接收基站广播的第一系统消息，所述第一系统消息携带有资源控制信息，所述第一系统消息用于指示所述基站覆盖范围内的车辆到车辆V2V终端根据所述资源控制信息发送和接收安全信息；
所述第一V2V终端根据所述资源控制信息测量资源负载值；
所述第一V2V终端向所述基站发送所述测得的资源负载值，所述资源负载值用于指示所述基站根据所述资源负载值对所述资源控制信息的内容进行调整；
所述第一V2V终端接收所述基站向所述基站覆盖范围内的所述V2V终端广播的所述已调整的资源控制信息。
在第五方面的第一种可能的实现方式中，所述第一V2V终端接收到的所述资源控制信息包括资源信息，所述资源信息包括接收资源池的资源位置和发送资源池的资源位置。
在第五方面的第二种可能的实现方式中，所述第一V2V终端接收到的所 述资源控制信息包括资源信息、车辆发送参数和拥塞控制参数，所述资源信息包括接收资源池的资源位置和发送资源池的资源位置，所述车辆发送参数用于调整后续安全信息的发送行为，所述拥塞控制参数用于指示所述V2V终端在所述发送资源池中测量、或测量和发送所述资源负载值。
根据第五方面的第一种或第二种可能的实现方式，在第三种可能的实现方式中，当所述基站中预设有拥塞控制阈值时，所述资源负载值具体用于指示所述基站在接收到的所述资源负载值的数量大于所述拥塞控制阈值时，对所述资源控制信息的内容进行调整，所述调整的内容包括所述资源信息和所述车辆发送参数的内容中的至少一项，还选择性的包括所述拥塞控制参数中的一项或多项，其中，所述车辆发送参数包括所述安全消息的发送时间间隔和发送功率中的至少一项，所述拥塞控制参数包括用于所述V2V终端执行测量的持续时间和资源负载阈值。
根据第五方面的第三种可能的实现方式，在第四种可能的实现方式中，当所述资源负载阈值包括第一资源负载阈值和第二资源负载阈值时，所述第一V2V终端向所述基站发送所述测得的资源负载值，包括：
所述第一V2V终端在所述测得的资源负载值大于所述第一资源负载阈值或者小于所述第二资源负载阈值时，向所述基站发送所述资源负载值。
根据第五方面、第五方面的第一种到第四种可能的实现方式中任意一种，在第五种可能的实现方式中，当所述资源控制信息中还包括位于所述接收资源池中的寻呼资源的位置信息时，所述方法还包括：
所述第一V2V终端接收所述基站发送的寻呼指示消息；
所述第一V2V终端根据所述寻呼资源的位置信息和所述寻呼指示消息发送寻呼消息，所述寻呼消息用于指示所述基站覆盖范围内的每个V2V终端均所述接收资源池中监听所述基站广播的携带有所述已调整的资源控制信息的第二系统消息，所述第二系统消息用于指示所述基站覆盖范围内的所述V2V终端根据所述已调整的资源控制信息发送和接收所述安全消息，以及测量、或测量和发送所述第二系统消息所广播的发送资源池的资源负载值。
根据第五方面的第五种可能的实现方式，在第六种可能的实现方式中，所述发送资源池的资源位置位于所述接收资源池的资源位置中，当所述接收资源池中包括多个所述发送资源池，并且所述V2V终端均位于所述发送资源 池中时，所述第一V2V终端根据所述资源控制信息测量资源负载值，包括：
所述第一V2V终端根据所述资源控制信息测量其所在发送资源池的资源负载值，或者测量所述多个发送资源池的平均资源负载值；
则所述第二系统消息具体用于指示所述第二系统消息中的每个所述发送资源池中的V2V终端根据所述已调整的资源控制信息发送和接收所述安全消息，以及测量、或测量和发送所述第二系统消息所广播的发送资源池的资源负载值。
根据第五方面的第五种可能的实现方式，在第七种可能的实现方式中，所述发送资源池的资源位置位于所述接收资源池的资源位置中，当所述接收资源池中包括多个所述发送资源池，并且所述V2V终端位于部分所述发送资源池中时，所述第一V2V终端根据所述资源控制信息测量资源负载值，包括：
所述第一V2V终端根据所述资源控制信息测量其所在发送资源池中的资源负载值；
则所述第二系统消息具体用于指示所述第一V2V终端所在发送资源池中的所有V2V终端根据所述已调整的资源控制信息发送和接收所述安全消息，以及测量、或测量和发送其所在发送资源池的资源负载值。
根据第五方面的第七种可能的实现方式，在第八种可能的实现方式中，所述第一V2V终端根据所述资源控制信息测量资源负载值，还包括：
所述第一V2V终端根据所述资源控制信息测量第二V2V终端所在发送资源池的资源负载值；
则所述第二系统消息具体用于指示所第一V2V终端和所述第二V2V终端所在发送资源池中的V2V终端根据所述已调整的资源控制信息发送和接收所述安全消息，以及测量、或测量和发送各自所在发送资源池的资源负载值。
根据第五方面、第五方面的第一种到第八种可能的实现方式中任意一种，在第九种可能的实现方式中，所述第一V2V终端根据所述资源控制信息测量资源负载值，包括：
所述第一V2V终端对所述发送资源池中物理资源块PRB的使用率进行测量，测得的所述资源负载值具体为：
Figure PCTCN2015079814-appb-000007
其中，所述M1(T)表示所述发送资源池中，在持续时间T内已使用的PRB 的数量，所述P(T)表示所述发送资源池中，在持续时间T内可用的PRB的总量，T为所述第一V2V终端执行测量的持续时间；或者，
所述第一V2V终端对所述发送资源池中物理资源块PRB的碰撞率进行测量，测得的所述资源负载值具体为：
Figure PCTCN2015079814-appb-000008
其中，所述M1(T)表示所述发送资源池中，在持续时间T内已使用的PRB的数量，所述M2(T)表示所述发送资源池中，在持续时间T内发生碰撞的PRB的数量，T为所述第一V2V终端执行测量的持续时间。
根据第五方面、第五方面的第一种到第九种可能的实现方式中任意一种，在第十种可能的实现方式中，当所述拥塞控制参数中还包括所述基站的能力域值时，所述第一V2V终端向所述基站发送所述测得的资源负载值之前，还包括：
所述第一V2V终端判断其自身的标识信息是否为所述能力域值的整数倍；
则所述第一V2V终端向所述基站发送所述测得的资源负载值，包括：
当所述第一V2V终端判断出其自身的标识信息为所述能力域值的整数倍时，向所述基站发送所述测得的资源负载值。
根据第五方面的第十种可能的实现方式，在第十一种可能的实现方式中，当所述拥塞控制参数中还包括负载发送标识时，所述第一V2V终端向所述基站发送所述测得的资源负载值之前，还包括：
所述第一V2V终端判断其自身的标识信息为所述能力域值的整数倍或非整数倍；
则所述第一V2V终端向所述基站发送所述测得的资源负载值，包括：
当所述第一V2V终端判断出其自身的标识信息为所述能力域值为整数倍，以及所述负载发送标识指示为上报时，向所述基站发送所述测得的资源负载值；或者，
当所述第一V2V终端判断出其自身的标识信息为所述能力域值为非整数倍，以及所述负载发送标识指示为不上报时，向所述基站发送所述测得的资源负载值。
根据第五方面、第五方面的第一种到第十一种可能的实现方式中任意一 种，在第十二种可能的实现方式中，所述第一V2V终端向所述基站发送所述测得的资源负载值，包括：
所述第一V2V终端通过无线资源控制RRC信令或者通过媒体介入控制的控制信元MAC CE向所述基站发送所述测得的资源负载值。
本发明实施例所提供的数据传输装置、V2V通信系统及方法中，数据传输装置通过发送模块广播携带资源控制信息的第一系统消息，该第一系统消息用于指示基站覆盖范围内的V2V终端根据接收到的资源控制信息发送和接收安全消息，以及测量资源负载值，并通过接收模块接收第一V2V终端发送的资源负载值，从而由调整模块根据接收到的资源负载值对资源控制信息的内容进行调整，并向其覆盖范围内的V2V终端发送已调整的资源控制信息，以使更改后的资源控制信息适应当前状态下的V2V终端发送和接收安全消息，实现对其覆盖范围内的V2V终端进行拥塞控制；本实施例提供的数据传输装置解决了将现有技术的D2D通信的方式应用于V2V通信时，由于发送资源池中的资源有限，而造成车辆数目较多时通信质量下降的问题，相应地提高了每个发送资源池中的资源的利用率。
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图3为图1所示实施例提供的一种MAC CE的格式示意图；
图4图1所示实例提供的一种MAC子头的格式示意图；
图5图1所示实例提供的另一种MAC子头的格式示意图；
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图8为本发明实施例所提供的另一种数据传输装置的结构示意图；
图9为本发明一实施例所提供的一种基站的结构示意图；
图10为本发明一实施例所提供的一种V2V终端的结构示意图；
图11为本发明实施例五所提供的一种V2V通信方法的流程图；
图12为本发明实施例所提供的另一种V2V通信方法的流程图；
图13为本发明实施例六所提供的一种V2V通信方法的流程图；
图14为本发明实施例所提供的又一种V2V通信方法的流程图；
图15为本发明实施例所提供的再一种V2V通信方法的流程图。
具体实施方式
为使本发明实施例的目的、技术方案和优点更加清楚，下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
本发明以下各实施例所提供的基站、V2V终端及其执行V2V通信的方式，为ITS的实现提供了可行的实施方式，本发明考虑将现有的D2D通信方式应用于V2V通信中。D2D的通信方式具体包括：方式一、D2D终端与基站建立连接，每次由基站为其分配D2D资源，D2D终端在此资源上发送D2D数据，执行该方式的D2D终端一定在基站的覆盖范围中；方式二、D2D终端在发送资源池中随机选择D2D资源，在所选择的D2D资源上发送D2D数据，在此通信方式中，若D2D终端在基站覆盖范围中，则发送资源池信息由基站通过系统消息统一广播或者通过无线资源控制(Radio Resource Control，简称为：RRC)专用信令单独发送给D2D终端，若D2D终端未在基站覆盖范围中，则使用预配置的发送资源池；另外，上述两种方式，终端设备还需要在接收资源池中接收D2D数据；对于上述方式一，接收资源池由基站通过广播的方式通知设备；对于上述方式二，采用预配置的接收资源池。在上述的D2D通信方式中，方式一中的D2D终端必须为基站覆盖范围内与基站建立连接的终端，该方式在具体使用中的限制条件较大；方式二中的D2D终端虽然可以由基站广播发送资源池，或者在预配置的发送资源池中随机选择资源，然而，该D2D终端发送数据时，在调度分配(Scheduling  Assignment，简称为：SA)的发送资源池中发送SA消息，在该SA消息中指示发送数据的相关信息，如调制编码格式、数据发送资源位置、物理层标识(Identity，简称为：ID)等等，随后按照SA消息的相关内容发送数据；类似地，D2D终端接收数据的方式为，先接收对端D2D终端发送的SA消息，再按照该SA消息中指示的内容接收相应的数据。
V2V终端可以是指车辆，具体可以是车辆上配置的车载通信模块，由于车辆通常处于运动状态，基站覆盖范围内的V2V终端为实时变化的，在某一基站覆盖范围内的V2V终端数量较多时，可能会发生拥塞，即多个V2V终端在发送资源池中选择同样的资源广播安全消息的概率会增加，因此，无法保证其它V2V终端正常的接收到安全消息，降低了该基站范围内V2V终端通行的安全性。需要说明的是，本发明以下各实施例中的V2V终端不限于车辆内配置的车载通信模块，还可以是基站覆盖范围内的行人所使用的无线终端，例如手机或个人数字助理(Personal Digital Assistant，简称为：PDA)等，即可以将基站覆盖范围内的移动通信终端均定义为V2V终端。
下面以具体的实施例对本发明的技术方案进行详细说明，本发明各实施例中的基站主要用于执行拥塞控制，具体地，一方面通过系统消息广播资源控制信息，另一方面接收车辆上报的发送资源池的资源负载值，据此判断是否需要进行拥塞控制以及如何调整；V2V终端主要用于执行安全消息的发送和接收，以及测量和向基站上报发送资源池的资源负载值，当有安全消息产生时，对产生的安全消息进行广播；当无安全消息产生时，需要接收其它车辆发送的安全消息。下面这几个具体的实施例可以相互结合，对于相同或相似的概念或过程可能在某些实施例不再赘述。
实施例一
图1为本发明实施例一所提供的一种数据传输装置的结构示意图。本实施例的数据传输装置适用于执行V2V通信的情况，该数据传输装置可以以硬件和软件的方式来实现，通常设置于V2V通信系统的基站中，与该基站覆盖范围内的V2V终端通过消息交互，进行拥塞控制管理。本实施例提供的数据传输装置具体包括：发送模块11、接收模块12和调整模块13。
其中，发送模块11，用于广播第一系统消息，该第一系统消息携带资源 控制信息，该第一系统消息用于指示基站覆盖范围内的V2V终端根据资源控制信息发送和接收安全消息，以及测量资源负载值。
本发明各实施例中基站与其覆盖范围的内V2V终端的通信方式，例如，广播方式、接收和发送消息的行为，以及基站与V2V终端建立连接的方式与D2D通信类似。如图2所示，为图1所示实施例提供的V2V通信的应用场景示意图，基站覆盖范围内有3个车辆，即3个V2V终端，在该场景中，进入基站覆盖范围的车辆之间可以进行通信，基站可以向每个车辆广播第一系统消息，然而，只有在车辆与基站建立连接后才能向基站发送消息；在本实施例中，V2V终端进入基站的覆盖范围后，可以接收到第一系统消息，获取其中包含的资源控制信息，该资源控制信息包括资源信息，资源信息包括发送资源池信息和接收资源池的资源位置，发送资源池为接收资源池的子集，位于接收资源池的资源位置之内；V2V终端要发送安全消息时，在发送资源池中选择资源进行发送，该选择的资源可以是基站分配的，也可以是随机选择的；V2V终端接收数据的方式为，在整个接收资源池内监听其它V2V终端发送的安全消息；并且，基站覆盖范围内的V2V终端均可以在发送资源池中测量资源负载值。另外，资源控制信息还可以包括车辆发送参数和拥塞控制参数，车辆发送参数用于调整后续安全信息的发送行为，拥塞控制参数用于指示V2V终端在发送资源池中测量、或测量和发送资源负载值，上述车辆发送参数和拥塞控制参数也可以为V2V终端中预配置的，车辆发送参数可以包括安全消息的发送时间间隔和发送功率中的至少一项，拥塞控制参数可以包括用于V2V终端执行测量的持续时间和资源负载阈值。
上述已经说明，将现有的D2D通信的方式应用于V2V通信时，由于发送资源池的资源有限，当V2V终端的数量较多时，若多个V2V终端在发送资源池中选择相同的资源广播安全消息，则无法保证每个V2V终端正常的接收到安全消息。在本实施例中，一方面，可选地，可以通过发送时间间隔限制安全消息的发送时间，以降低同一资源上发送安全消息的碰撞概率，需要说明的是，安全消息的产生是由应用层决定的，若未配置发送时间间隔的情况下，在V2V终端产生安全消息时执行发送的操作，发送时间间隔具体为配置给V2V终端的参数，若配置有该发送时间间隔，V2V终端以配置的时间间隔发送安全消息，可选地，还可以通过发送功率限制V2V终端发送安全 消息的功率，以减少对距离较远的车辆的干扰，另外，该发送时间间隔和发送功率可以同时用于V2V终端发送安全消息；另一方面，V2V终端可以测量发送资源池中的资源负载值，在其测量的资源负载值满足资源负载阈值时，向基站上报该资源负载值，该资源负载阈值例如可以是根据基站分配的发送资源池的承载能力设定的，通过预置的资源负载阈值来控制向基站上报负载状态的V2V终端的数量，有利于降低基站的处理负担。
接收模块12，用于接收第一V2V终端发送的资源负载值。
本实施例中与基站建立连接并向基站发送资源负载值的第一V2V终端具体为测得的资源负载值满足资源负载阈值的V2V终端，基站覆盖范围内的其它V2V终端则无需上报其测量的资源负载值。需要说明的是，第一V2V终端的数量可以是一个或多个，基站接收其覆盖范围内第一V2V终端发送的资源负载值，根据接收到的资源负载值的数量可以获知向其上报负载状态的第一V2V终端的具体数量，并且可以获知每个第一V2V终端测得的资源负载值对应的发送资源池的负载状态。
本实施例在具体实现中，资源负载阈值可以包括第一资源负载阈值和第二资源负载阈值，其中，第一资源负载阈值为触发V2V终端上报的上门限，第二资源负载阈值为触发V2V终端上报的下门限，则本实施例中的第一V2V终端具体为测得的资源负载值大于第一资源负载阈值，或者测得的资源负载值小于第二资源负载阈值时，向基站发送资源负载值的V2V终端。也就是说，第一V2V终端可以在发送资源池的资源紧张，且触发上门限时上报其测量的资源负载值，也可以在发送资源池的资源空闲，且触发下门限时上报其测量的资源负载值。
调整模块13，用于根据接收模块12接收到的资源负载值对资源控制信息的内容进行调整。具体地，调整模块13调整的内容不限于发送模块11发送的资源控制信息的内容，若车辆发送参数和拥塞控制参数为V2V终端中预配置的，调整模块13同样可以对车辆发送参数和拥塞控制参数的内容进行调整，并将调整后的参数添加到资源控制信息中。
本实施例中的发送模块11，还用于向基站覆盖范围内的V2V终端广播已调整的资源控制信息。
在本实施例中，接收模块12接收到第一V2V终端上报的资源负载值， 作为调整模块13对资源控制信息进行调整的依据，基站已知每个第一V2V终端发送的资源负载值对应的发送资源池，并且已知每个发送资源池的资源状态，则可以根据第一V2V终端的上报情况，对资源控制信息的内容进行调整，该调整后的资源控制信息适应当前状态下的V2V终端发送安全消息，从而由发送模块11向其覆盖范围内的V2V终端广播上述已调整的内容，使得V2V终端可以使用适应当前状态下的资源控制信息发送安全消息，实现基站对其覆盖范围内的V2V终端的集中拥塞控制，以提高每个发送资源池中资源的利用率。需要说明的是，本实施例中发送资源池可以为一个或多个。
本实施例在具体实现中，当基站中预设有拥塞控制阈值时，调整模块13，具体用于在接收模块12接收到的资源负载值的数量大于拥塞控制阈值时，对资源控制信息的内容进行调整，该资源负载值的数量与向基站上报该信息的第一V2V终端的数量相同，其中，调整模块13调整的内容包括资源信息和车辆发送参数的内容中的至少一项，资源信息和车辆发送参数为基站对V2V终端指定的发送安全消息的发送资源和发送方式，基站通过统筹管理对V2V终端发送安全消息相关的资源信息和车辆发送参数进行调整，降低多个V2V终端选择相同的资源发送安全消息的概率，以保证基站覆盖范围内的每个V2V终端均可以正常接收到其它V2V终端发送的安全消息，进而提高了车辆通行的安全性。可选地，调整模块13调整的内容还可以包括拥塞控制参数中的一项或多项，该项参数具体对V2V终端测量发送资源池中的资源负载值的方式进行了规定。
需要说明的是，本实施例中的资源信息还可以包括可用的频点、带宽信息，车辆发送参数还可以包括调制编码格式，本发明实施例不限制资源控制信息的具体内容，只要是可以用于指示基站覆盖范围内的V2V终端以该基站指示的方式发送和接收安全消息，并用于测量基站广播的发送资源池中的负载状态的资源负载值，保证基站可以对其覆盖范围内的V2V终端进行集中拥塞控制的信息，均可以用于本发明实施例中。
还需要说明的是，若调整模块13调整后的资源控制信息中可以加入新的接收资源池和发送资源池，该新的接收资源池和发送资源池可以是在原有的频点和带宽上分配的，也可以是在新加入的频点和带宽上分配的，则V2V终端可以根据该新加入信息选择资源；若还包含了新的接收资源池，则V2V终 端可以在新的接收资源池中接收安全消息；若还包含了新的频点、带宽，以及在新的频带资源上的发送资源池、接收资源池，则V2V终端可以根据该些信息的指示，在新的频带上的发送资源池中选择资源，在新的接收资源池中接收消息。
本实施例所提供的数据传输装置，通过发送模块广播携带资源控制信息的第一系统消息，该第一系统消息用于指示基站覆盖范围内的V2V终端根据接收到的资源控制信息发送和接收安全消息，以及测量资源负载值，并通过接收模块接收第一V2V终端发送的资源负载值，从而由调整模块根据接收到的资源负载值对资源控制信息的内容进行调整，并向其覆盖范围内的V2V终端发送已调整的资源控制信息，以使更改后的资源控制信息适应当前状态下的V2V终端发送和接收安全消息，实现对其覆盖范围内的V2V终端进行拥塞控制；本实施例提供的数据传输装置解决了将现有技术的D2D通信的方式应用于V2V通信时，由于发送资源池中的资源有限，而造成车辆数目较多时通信质量下降的问题，相应地提高了每个发送资源池中的资源的利用率。具体来说，当车辆数目较多时会产生拥塞现象，并且增加了多个车辆选择同样的资源广播安全消息的概率，从而导致车辆通行的安全性较差。
进一步地，本实施例中通过在基站侧设置资源负载阈值的方式来限制向基站上报信息的V2V终端的数量，以降低上报信息所占用的发送资源和基站的处理负担；另外，通过基站广播的车辆发送参数发送安全消息，有利于降低同一资源上V2V终端发送安全消息的碰撞概率，同时可以减少对距离较远的V2V终端的干扰。
可选地，本实施例中发送模块11广播资源控制信息中，拥塞控制参数中还可以包括基站的能力域值，该能力域值例如可以为一个正整数，具体为根据基站的处理能力预先设置的；则接收模块12具体接收到第三V2V终端发送的资源负载值，该第三V2V终端为上述第一V2V终端的子集，具体为自身的标识(Identity，简称为：ID)信息是能力域值的整数倍的第一V2V终端；本实施例中的第一V2V终端，还可以进一步计算其自身的ID信息是否为该能力阈值的整数倍，该ID信息例如可以为第一V2V终端的车牌号或国际移动用户标识(International Mobile Subscriber Identity，简称为：IMSI)等通信相关的ID号码，或者为其它类型的ID号码。在具体实现中，基站将根据其 处理能力选择的能力阈值通过第一系统消息广播给V2V终端，图2所示的应用场景，所有的第一V2V终端，也就是测得的资源负载值满足资源负载阈值的V2V终端，均需要与基站建立连接并向其上报其测量的资源负载值，这样会给基站带来较大的处理负担。显然地，在本实施例中，通过基站广播其能力阈值，使得第一V2V终端判断是否上报负载状态时还可以结合该能力阈值的处理方式，仅由其中的一个子集，即第三V2V终端上报资源负载值，减少了向基站上报资源负载值的V2V终端的数量，相应地减轻了基站的处理负担；与此同时，基站将上报资源负载值的第三V2V终端的数目乘以该预设的能力阈值，即可估计出第一V2V终端的总数，再结合已上报的资源负载值的数量，综合分析对资源控制信息的内容进行调整。
进一步地，发送模块11广播资源控制信息中，拥塞控制参数中不仅可以包括上述基站的能力域值，在此基础上，拥塞控制参数还可以包括负载发送标识，该负载发送标识例如占用1比特(Bit)的资源空间，通过“1”表示“上报”，通过“0”表示“不上报”；则所述接收模块12具体接收到第四V2V终端发送的资源负载值，该第四V2V终端为负载发送标识为1时，自身的标识信息是能力域值的整数倍的第一V2V终端，或者，该第四V2V终端为负载发送标识为0时，自身的标识信息是能力域值的非整数倍的第一V2V终端。在本实施例中，测得资源负载值满足资源负载阈值的第一V2V终端，同时可以结合其自身的标识信息是否为该能力域值的整数倍，以及基站广播的负载发送标识，来确认是否与基站建立连接并上报负载状态；举例来说，若能力域值为4，负载发送标识指示为“上报”，则所有标识信息可被4整除的第一V2V终端需要上报；若能力域值为4，负载发送标识指示“不上报”，则所有标识信息可被4整除的第一V2V终端不需要上报，不能整除的那些第一V2V终端需要上报。相比于上述实施例中确认第一V2V终端是否需要上报的方式，本实施例具有更高的灵活性，具体地，如上述实施例中，若能力域值为4，则大约需要1/4的第一V2V终端上报，能力域值的数值越大，需要上报的第一V2V终端的数目越少，能力域值为2时，则有1/2的第一V2V终端需要上报；若需要有多于1/2的第一V2V终端的上报，上述实施例中仅通过能力域值确定是否上报负载状态的方式则难以实现，通过本实施例中结合能力域值与负载发送标识的方式，若能力域值为4，负载发送标识指示“上 报”，则与上述实施例中上报的效果是一致的；若负载发送标识指示“不上报”，则表明不能被4整除的第一V2V终端需要上报，则大约需要3/4的第一V2V终端的上报负载状态。显然地，本实施例提供了一种更加灵活的配置方式，可以灵活调整向基站上报负载状态的第一V2V终端的数量。
可选地，上述实施例中接收模块12接收到的资源负载值为第一V2V终端通过无线资源控制(Radio Resource Control，简称为：RRC)信令或者通过媒体介入控制(Medium Access Control，简称为：MAC)的控制信元(Control Element，简称为：CE)，即MAC CE发送的。
在本实施例的一种实现方式中，第一V2V终端通过RRC信令向基站上报测量的资源负载值，可以使用现有的测量报告(Measurement Report，简称为：MR)RRC信令，在其中加入新的信元，用于上报V2V终端测量的发送资源池的资源负载值，也可以加入一条新的RRC信令，专用于V2V终端上报测量的发送资源池的资源负载值；其中，具体上报的资源负载值可以为一个百分比，表示资源负载的使用率，举例来说，可以为从{0％，5％，……，95％，100％}这个集合中选取一个最接近实际测量的值上报给基站。
上述第一V2V终端通过RRC信令上报发送资源池中资源负载值的方式，RRC信令需要经过协议栈的其它各层的处理，例如加密、加包头等等，一方面向基站上报速度会较慢，另一方面还会带来若干额外开销。相比于通过RRC信令上报负载状态的方式，在本实施例的另一种实现方式中，第一V2V终端通过一种新的MAC CE向基站上报测量的资源负载值，由于MAC CE只是在MAC层添加的，省去了RRC层与MAC层中间各层的加工处理，使得上报的速度更快，且减少了额外的开销。举例来说，该MAC CE的格式如图3所示，为图1所示实施例提供的一种MAC CE的格式示意图；其中，R为预留位(Reserved)，测量报告(Load measurement report)为第一V2V终端测量得到的发送资源池的资源负载值，同样以百分比为例予以示出，例如，可以用5个比特表示{0％，5％，……，95％，100％}，一种可能的实现是：00000～0％，00001～5％，……，依此类推，5个比特表示的二进制数每增加1，代表资源负载值的百分比增加5％。
在具体实现中，该MAC CE对应的MAC子头，可以使用一种新的逻辑信道标识(Logical Channel ID，简称为：LCID)，来指示该新的MAC CE， 如图4所示，为图1所示实例提供的一种MAC子头的格式示意图。另外，也可以与V2V终端发送的缓存状态报告(Buffer Status Report，简称为：BSR)复用同一个MAC子头，如图5所示，为图1所示实例提供的另一种MAC子头的格式示意图；该BSR的MAC子头中，R为预留位(Reserved)，E为扩展位，指示后边是否还有其它的MAC子头，LCID，用来区分不同的业务，F用来指示后边的L域所占比特数，L域有两种，一种为7比特(Bit)，另一种为15比特，L域用于指示该MAC子头对应的BSR的字节数；本实施例中的MAC CE与BSR复用同一个MAC子头的具体方式为：基站可以根据L域的取值来区分该MAC子头对应的是一个V2V终端的BSR，还是一个V2V终端测量报告，具体来说，由于车辆的BSR长度一定大于0，故L域全0的取值不会为BSR，因此可以用全0来指示后边对应的是V2V终端发送的测量报告。
进一步地，上述实施例中接收模块12接收到的资源负载值例如可以为第一V2V终端对发送资源池中物理资源块(Physical Resource Block，简称为：PRB)的使用率的测量结果，该RPB的使用率具体可以为：
Figure PCTCN2015079814-appb-000009
其中，上述(1)式中M1(T)表示发送资源池中，在持续时间T内已使用的PRB的数量，P(T)表示发送资源池中，在持续时间T内可用的PRB的总量，T为第一V2V终端执行测量的持续时间。
上述实施例中接收模块12接收到的资源负载值还可以为第一V2V终端对发送资源池中PRB的碰撞率的测量结果，RPB的碰撞率具体为：
Figure PCTCN2015079814-appb-000010
其中，上述(2)式中M1(T)表示发送资源池中，在持续时间T内已使用的PRB的数量，M2(T)表示发送资源池中，在持续时间T内发生碰撞的PRB的数量，T为第一V2V终端执行测量的持续时间。
实施例二
图6为本发明实施例二所提供的一种数据传输装置的结构示意图。在上述图1所示实施例的基础上，本实施例提供的数据传输装置的发送模块11包括：第一发送单元14，用于发送寻呼消息，或者指示第一V2V终端发 送寻呼消息，以向基站覆盖范围内的V2V终端通知资源控制信息中的内容已调整；第二发送单元15，用于广播携带有已调整的资源控制信息的第二系统消息，该第二系统消息用于指示该基站覆盖范围内的V2V终端根据已调整的资源控制信息发送和接收安全消息，以及测量、或测量和发送第二系统消息所广播的发送资源池的资源负载值。需要说明的是，基站覆盖范围内的V2V终端都可以测量发送资源池的资源负载值，然而，只有在测得的资源负载值符合发送条件的V2V终端才发送资源负载值，发送资源负载值的V2V终端同样可以为上述实施例中的第一、第三或第四V2V终端，发送的条件在上述实施例中已经说明，故在此不再赘述。
在本实施例中，提供了发送调整后的资源控制信息的具体方式，一方面，可以由基站直接发送寻呼消息，也可以由基站指示与其连接的V2V终端，例如指示上述各实施例中的第一V2V终端发送该寻呼消息。在具体实现中，第一发送单元14可以向基站覆盖范围内的每个V2V终端分别发送寻呼消息，由于基站发送寻呼消息时，其覆盖范围内的V2V终端不仅包括车辆上配置的通信模块，还包括手机、笔记本电脑等其它移动终端上配置的通信模块，因此，基站需要对每个V2V终端单独发送一条寻呼消息，然而，该发送方式占用了正常的寻呼资源，并且对每个寻呼对象都需要一条寻呼消息增加了系统的开销。
另一方面，针对上述问题，本实施例还提供了其它发送寻呼消息的方式。第一发送单元14可以在接收资源池中发送寻呼消息，该寻呼消息用于指示基站覆盖范围内的每个V2V终端均在接收资源池中监听寻呼消息；在本实施例中，由于V2V终端之间发送的安全消息本身就具有广播的特性，所有V2V终端可以监听整个接收资源池中其它终端发送的消息，利用该特性，基站的第一发送单元14具体在接收资源池中发送该寻呼消息，不但节省了基站分配的寻呼资源，而且仅需要一条寻呼消息即可，其覆盖范围内的V2V终端都可以监听到，不必分别发送给每个V2V终端一条寻呼消息，这样就使得寻呼变得更加简单。在该寻呼消息的发送方式的基础上，若基站广播的资源控制信息中还包括位于接收资源池中的寻呼资源的位置信息；则第一发送单元14还可以指示第一V2V终端发送寻呼消息，具体地，第一发送单元14向第一V2V终端发送寻呼指示消息，该寻呼指示消息用于指示第一V2V终端根据寻呼指 示消息和寻呼资源的位置信息发送寻呼消息，该寻呼消息用于指示基站覆盖范围内的每个V2V终端均在接收资源池中监听寻呼消息；本实施例在具体实现中，基站可以在接收资源池中保留一个资源，即专用于发送该寻呼消息的寻呼资源，该寻呼资源的位置信息同样由基站在第一系统消息中广播，V2V终端进入基站覆盖范围后通过监听第一系统消息获知寻呼资源的位置信息。
以下通过一个具体实例说明在接收资源池中发送寻呼消息的方式，可以在SA消息中指定一个特殊的8Bit地址专用于指示寻呼消息，该地址后不携带数据；若基站指示第一V2V终端来发送该寻呼消息，还可以在SA消息中添加1Bit的寻呼指示，SA消息后携带的数据正常发送。
需要说明的是，本实施例中的第一V2V终端发送寻呼消息时，也可以动态选择发送该寻呼消息的资源，即只在需要发送寻呼消息的时候才选择一个资源，不需要的时候不必保留，完全由该第一V2V终端自己选择资源发送，同一基站覆盖范围内的其它的V2V终端在接收资源池中接收消息。
进一步地，上述实施例中已经说明发送资源池为接收资源池的子集，位于接收资源池的资源位置之内，在本实施例中，基站广播的资源控制消息中，接收资源池中通常包括多个发送资源池。可选地，基站覆盖范围内的V2V终端随机的选择发送资源池中的资源，即V2V终端以等概率的方式随机选择发送资源池，则可以认为每个发送资源池中的负载状态是近似的。举例来说，若每个发送资源池中包括相同数量的资源，则每个发送资源池中V2V终端的数量相同，若每个发送资源池中的资源数量不同，则可以根据各发送资源池中资源使用的比例衡量负载状态是否相同，例如，池1中有3个资源，池2有7个资源，则池1中约有30％的V2V终端，池2中约有70％的V2V终端时，两个发送资源池的负载状态相同，因此，接收模块12接收到的资源负载值可以包括第一V2V终端对其所在发送资源池的资源负载值的测量结果，该测量结果可以体现出所有发送资源池的平均负载状态，因此，接收模块12接收到的资源负载值也可以包括第一V2V终端对多个发送资源池的资源负载值的平均测量结果；相应地，第二发送单元15广播的第二系统消息具体用于指示第二系统消息中每个发送资源池中的V2V终端根据已调整的资源控制信息发送和接收安全消息，以及测量、或测量和发送第二系统消息所广播的发送资源池中的资源负载值。在本实施例中，由于第一V2V终端上报的资源负载 值可以整体反应所有发送资源池的负载状态，因此，基站广播的已调整的资源控制信息可以用于每个发送资源池中的V2V终端发送和接收安全消息，即本实施例中的V2V终端均位于发送资源池中。
在本实施例的另一种可能的实现方式中，基站覆盖范围内的V2V终端非随机的选择发送资源池中的资源，例如可以是基站配置的，具体可以根据V2V终端的业务延迟等因素进行配置，则可以认为每个发送资源池中的负载状态是不同的，因此，每个发送资源池中的资源负载值需要分别进行上报，即接收模块12接收到的资源负载值通常可以包括第一V2V终端对其所在发送资源池的资源负载值的测量结果；相应地，第二发送单元15广播的第二系统消息具体用于指示第一V2V终端所在发送资源池中的V2V终端根据已调整的资源控制信息发送和接收安全消息，以及测量、或测量和发送其所在发送资源池的资源负载值。在本实施例中，第一V2V终端上报的资源负载值通常仅能反应该第一V2V终端所在的发送资源池的负载状态，因此，基站广播的已调整的资源控制信息仅能用于该第一V2V终端所在的发送资源池中的所有V2V终端发送安全消息。
需要说明的是，本实施例中的第一V2V终端不仅可以对其所在的发送资源池进行资源负载值的测量，还可以对第二V2V终端所在的发送资源池进行资源负载值的测量，其中，可以认为该第二V2V终端是其它发送资源池中的V2V终端，本实施例中的第二V2V终端例如可以是位于不同发送资源池中的多个终端；则第二发送单元15广播的第二系统消息具体用于指示第一V2V终端和第二V2V终端所在发送资源池中的V2V终端根据已调整的资源控制信息发送和接收安全消息，以及测量、或测量和发送各自所在发送资源池的资源负载值。在本实施例中，基站可以根据第一V2V终端上报的信息获知其已测量的发送资源池的负载状态，即第一和第二V2V终端所在的发送资源池的负载状态，因此，基站广播的已调整的资源控制信息可以用于该第一和第二V2V终端所在的发送资源池中的所有V2V终端发送安全消息，即本实施例中的V2V终端位于部分发送资源池中。
在具体实现中，基站覆盖范围内可能存在一些与基站处于连接状态的第五V2V终端，由基站动态分配用于该第五V2V终端的资源传输数据，而并非使用基站广播的发送资源池中的资源，则这些第五V2V终端也可以测量发 送资源池中的负载状态并向基站上报。
还需要说明的是，本实施例中通过发送模块11在其广播的拥塞控制参数中加入基站的能力域值，或加入基站的能力域值和负载发送标识，用于灵活配置向基站上报负载状态的第一V2V终端的数量，第一V2V终端上报该资源负载值的具体发送方式，以及第一V2V终端测量该资源负载值的具体实现方式均与上述实施例相同，故在此不再赘述。
实施例三
图7为本发明实施例三所提供的一种数据传输装置的结构示意图。本实施例的数据传输装置适用于执行V2V通信的情况，该数据传输装置可以以硬件和软件的方式来实现，通常设置于V2V通信系统的每个V2V终端中，通过与其所属覆盖范围内的基站的消息交互，执行基站对其指示的拥塞控制方案。本实施例提供的数据传输装置具体包括：接收模块21、测量模块22和发送模块23。
接收模块21，用于接收基站广播第一系统消息，该第一系统消息的携带有资源控制信息，该第一系统消息用于指示基站覆盖范围内的V2V终端根据资源控制信息发送和接收安全消息。
本实施例提供中的V2V终端同样可以参考图2所示的V2V通信的应用场景，在本实施例中，V2V终端进入基站的覆盖范围后，其接收模块21可以接收到基站广播的第一系统消息，并获取其中包含的资源控制信息，该资源控制信息包括资源信息，资源信息包括发送资源池信息和接收资源池的资源位置，发送资源池为接收资源池的子集，位于接收资源池的资源位置之内；V2V终端要发送安全消息时，在发送资源池中选择资源进行发送，该选择的资源可以是基站分配的，也可以是随机选择的；V2V终端接收数据的方式为，在整个接收资源池内监听其它V2V终端发送的安全消息。另外，接收模块21接收的资源控制信息还可以包括车辆发送参数和拥塞控制参数，车辆发送参数用于调整后续安全信息的发送行为，拥塞控制参数用于指示V2V终端在发送资源池中测量、或测量和发送资源负载值；或者，上述车辆发送参数和拥塞控制参数也可以为V2V终端中预配置的，车辆发送参数可以包括安全消息的发送时间间隔和发送功率中的至少一项，拥塞控制参数可以包括用于V2V终端执行测量的持续时间和资源负载阈值。
测量模块22，用于根据资源控制信息测量资源负载值。
上述已经说明，将现有的D2D通信的方式应用于V2V通信时，由于发送资源池的资源有限，当V2V终端的数量较多时，若多个V2V终端在发送资源池中选择相同的资源广播安全消息，则无法保证每个V2V终端正常的接收到安全消息。本实施例与上述实施例类似地，一方面，可选地，可以通过发送时间间隔限制发送模块23发送安全消息的发送时间，以降低同一资源上发送安全消息的碰撞概率，需要说明的是，安全消息的产生是由应用层决定的，若未配置发送时间间隔的情况下，在V2V终端产生安全消息时发送模块23执行发送的操作，发送时间间隔具体为配置给发送模块23的参数，若配置有该发送时间间隔，发送模块23以配置的时间间隔发送安全消息，可选地，还可以通过发送功率限制V2V终端发送安全消息的功率，以减少对距离较远的车辆的干扰，另外，该发送时间间隔和发送功率可以同时用于发送模块23发送安全消息；另一方面，测量模块22可以测量发送资源池中的资源负载值，以获知基站广播的发送资源池中的负载状态，用于后续基站根据该信息对其覆盖范围内的V2V终端进行拥塞控制。
发送模块23，还用于向基站发送测量模块22测得的资源负载值，该资源负载值用于指示基站根据资源负载值对资源控制信息的内容进行调整；从而接收模块21还用于接收基站向其覆盖范围内的V2V终端广播的已调整的资源控制信息。需要说明的是，基站对资源控制信息调整的内容不限于其广播的资源控制信息的内容，若车辆发送参数和拥塞控制参数为V2V终端中配置的，基站同样可以对其进行调整，并将调整后的参数添加到资源控制信息中。
本实施例中的V2V终端，只用在测量模块22测得的资源负载值满足资源负载阈值时，才会向基站上报该资源负载值，该资源负载阈值例如可以是根据基站分配的发送资源池的承载能力设定的，通过预置的资源负载阈值来控制向基站上报负载状态的V2V终端的数量，有利于降低基站的处理负担。
需要说明的是，本实施例以V2V终端为执行主体说明V2V通信的具体方式，基站覆盖范围内通常有多个V2V终端，例如其中一部分V2V终端测得的资源负载值满足资源负载阈值，需要向基站上报负载状态，而另一部分V2V终端测得的资源负载值并未满足资源负载阈值，因此不会与基站建立连 接并上报负载状态；本实施例中提供的V2V终端具体指需要向基站上报负载状态的V2V终端，基站根据接收到的资源负载值即可获知向其发送该信息的V2V终端的具体数量，并且获知V2V终端测得的资源负载值对应的发送资源池的负载状态；另外，本实施例中发送资源池可以为一个或多个。
本实施例在具体实现中，接收模块21接收到的资源负载阈值例如也可以包括第一资源负载阈值和第二资源负载阈值，其中，第一资源负载阈值为触发V2V终端上报的上门限，第二资源负载阈值为触发V2V终端上报的下门限，则发送模块23具体用于在测量模块22测得的资源负载值大于第一资源负载阈值或者小于第二资源负载阈值时，向基站发送测量模块22测得的资源负载值。也就是说，本实施例提供的数据传输装置可以在发送资源池的资源紧张，且触发上门限时上报其测量的资源负载值，也可以在发送资源池的资源空闲，且触发下门限时上报其测量的资源负载值。该发送模块23发送的资源负载值，作为基站对资源控制信息进行调整的依据，基站已知每个向其上报负载状态的V2V终端发送的资源负载值对应的发送资源池，并且已知每个发送资源池的资源状态，则可以根据V2V终端的上报情况，对资源控制信息的内容进行调整，该调整后的资源控制信息适应当前状态下的V2V终端发送安全消息，从而向其覆盖范围内的V2V终端广播该已调整的内容，使得V2V终端可以使用适应当前状态下的资源控制信息发送和接收安全消息，实现V2V终端根据基站的集中拥塞控制进行V2V通信，以提高每个发送资源池中资源的利用率。
在本实施例中，与V2V终端建立连接的基站中同样可以预设有拥塞控制阈值，该阈值用于宏观衡量发送资源池的负载状态，则资源负载值具体用于指示基站在接收到的资源负载值的数量大于预设的拥塞控制阈值时，对资源控制信息的内容进行调整，由于资源负载值的数量与向基站上报该信息的V2V终端的数量为相同的，即上报的资源负载值的数量越多，发送资源池中资源的合理性越差。基站对其广播的资源控制信息调整的内容包括资源信息和车辆发送参数的内容中的至少一项，资源信息和车辆发送参数为基站对V2V终端指定的发送安全消息的发送资源和发送方式，基站通过统筹管理对V2V终端发送安全消息相关的资源信息和车辆发送参数进行调整，降低多个V2V终端选择相同的资源发送安全消息的概率，以保证基站覆盖范围内的每 个V2V终端均可以正常接收到其它V2V终端发送的安全消息，进而提高了车辆通行的安全性；上述调整的内容还选择性的包括拥塞控制参数中的一项或多项，该项参数具体对V2V终端测量发送资源池中的资源负载值的方式进行了规定。
需要说明的是，本实施例中的资源信息同样可以包括可用的频点、带宽信息，车辆发送参数还可以包括调制编码格式，本发明实施例不限制资源控制信息的具体内容，只要是可以用于指示同一基站覆盖范围内的V2V终端以该基站指示的方式发送和接收安全消息，并用于测量基站广播的发送资源池中的负载状态的资源负载值，保证基站可以对其覆盖范围内的V2V终端进行集中拥塞控制的信息，均可以用于本发明实施例中。
还需要说明的是，若接收模块21接收到已调整的资源控制信息中加入新的接收资源池和发送资源池，该新的接收资源池和发送资源池可以是在原有的频点和带宽上分配的，也可以是在新加入的频点和带宽上分配的，则V2V终端可以根据该新加入信息选择资源；若还包含了新的接收资源池，则V2V终端可以在新的接收资源池中接收安全消息；若还包含了新的频点、带宽，以及在新的频带资源上的发送资源池、接收资源池，则V2V终端可以根据该些信息的指示，在新的频带上的发送资源池中选择资源，在新的接收资源池中接收消息。
本实施例所提供的数据传输装置，通过接收模块接收基站广播的第一系统消息，该第一系统消息指示基站覆盖范围内的V2V终端根据资源控制信息发送和接收安全消息，并通过测量模块测量资源负载值，从而由发送模块向基站发送测量模块测量的资源负载阈值，该资源负载阈值用于指示基站根据V2V终端发送的资源负载值对基站广播的资源控制信息的内容进行调整，进而通过发送模块向该基站覆盖范围内的V2V终端发送已调整的资源控制信息，以使更改后的资源控制信息适应当前状态下的V2V终端发送和接收安全消息，实现对其覆盖范围内的V2V终端进行拥塞控制；本实施例提供的数据传输装置解决了将现有技术的D2D通信的方式应用于V2V通信时，由于发送资源池中的资源有限，而造成车辆数目较多时通信质量下降的问题，相应地提高了每个发送资源池中的资源的利用率。具体来说，当车辆数目较多时会产生拥塞现象，并且增加了多个车辆选择同样的资源广播安全消息的概率， 从而导致车辆通行的安全性较差的问题。
具体地，本实施例中通过在V2V终端所属范围的基站侧设置资源负载阈值的方式来限制向基站上报信息的V2V终端的数量，以降低上报信息所占用的发送资源和基站的处理负担；另外，通过基站广播的车辆发送参数发送安全消息，有利于降低同一资源上V2V终端发送安全消息的碰撞概率，同时可以减少对距离较远的V2V终端的干扰。
可选地，图8为本发明实施例所提供的另一种数据传输装置的结构示意图，本实施例提供的数据传输装置中，接收模块21接收到的拥塞控制参数中还包括基站的能力域值，该能力域值例如可以为一个正整数，具体为根据基站的处理能力预先设置的；则V2V终端还包括判断模块24，用于在发送模块23向基站发送测量模块22所测得的资源负载值之前，判断其自身的标识信息是否为能力域值的整数倍；相应地，发送模块23向基站发送资源负载值的具体方式为：当判断模块24判断出V2V终端的标识信息为能力域值的整数倍时，向基站发送测量模块22测得的资源负载值；该ID信息例如可以为该V2V终端的车牌号或IMSI等通信相关的ID号码，或者为其它类型的ID号码。在具体实现中，如图2所示的应用场景，若所有测得的资源负载值满足资源负载阈值的V2V终端，均需要与基站建立连接并向其上报其测量的资源负载值，这样会给基站带来较大的处理负担。显然地，在本实施例中，通过基站广播其能力阈值，使得第一V2V终端判断是否上报负载状态时还可以结合该能力阈值的处理方式，减少了向基站上报资源负载值的V2V终端的数量，相应地减轻了基站的处理负担；与此同时，基站侧将上报的V2V终端的数目乘以该预设的能力阈值，即可估计出测量的资源负载值满足资源负载阈值的V2V终端的总数，再结合已上报的资源负载值的数量，综合分析对资源控制信息的内容进行调整。
在图8所示实施例的另一种实现方式中，接收模块21接收到的拥塞控制参数在包括基站的能力域值的基础上，还可以包括负载发送标识，该负载发送标识例如占用1Bit的资源空间，通过“1”表示“上报”，通过“0”表示“不上报”；则判断模块24与上述实施例中执行的动作类似，用于判断其自身的标识信息为能力域值的整数倍或非整数倍；相应地，本实施例中的发送模块23向基站发送资源负载值的具体方式为：当判断模块24判断出V2V终 端的标识信息为能力域值的整数倍，以及负载发送标识为1时，向基站发送测量模块22测得的资源负载值；或者，当判断模块24判断出V2V终端的标识信息为能力域值的非整数倍时，以及负载发送标识为0时，向基站发送测量模块22测得的资源负载值。本实施例中V2V终端在测量出资源负载值满足资源负载阈值时，确认是否向基站发送该测量的资源负载值的多种实现方式，以及达到的有益效果与上述实施例类似，故在此不再赘述。
同样与上述图1所示实施例类似地，图7和图8所示实施例中发送模块23向基站发送其测量的资源负载值的具体方式为：通过RRC信令或者通过MAC CE向基站发送其测得的资源负载值；本实施例中V2V终端发送该资源负载值所采用的信令的具体实现方式，以及MAC CE的格式和MAC子头的格式可以参考图3～图5所示实施例，故在此不再赘述。
进一步地，图7和图8所示实施例中的资源负载值可以为测量模块22对发送资源池中PRB的使用率的测量结果，具体可以参考上述实施例中的(1)式；或者还可以为测量模块22对发送资源池中PRB的碰撞率的测量结果，具体可以参考上述实施例中的(2)式。
实施例四
图8同样可以为本发明实施例四所提供的一种数据传输装置的结构示意图。图8以上述图7所示实施例为基础进行进一步描述，本实施例提供了发送调整后的资源控制信息的具体方式。
可选地，可以由基站向其覆盖范围内的每个V2V终端分别发送寻呼消息，由于基站发送寻呼消息时，其覆盖范围内的V2V终端不仅包括车辆上配置的通信模块，还包括手机、笔记本电脑等其它移动终端上配置的通信模块，因此，基站需要对每个V2V终端单独发送一条寻呼消息，然而，该发送方式占用了正常的寻呼资源，并且对每个寻呼对象都需要一条寻呼消息增加了系统的开销。针对上述问题，基站还可以在其广播的接收资源池中发送寻呼消息，以使基站覆盖范围内的每个V2V终端均在接收资源池中监听寻呼消息；由于V2V终端之间发送的安全消息本身就具有广播的特性，所有V2V终端可以监听整个接收资源池中其它终端发送的消息，利用该特性，基站在接收资源池中发送该寻呼消息，不但节省了基站分配的寻呼资源，而且仅需要一条寻呼消息即可，其覆盖范围内的V2V终端都可以监听到，不必分别发送给每个 V2V终端一条寻呼消息，这样就使得寻呼变得更加简单。
在本实施例的另一种可能的实现方式中，V2V终端还可以根据基站的指示发送该寻呼消息，具体地，当接收模块21接收的资源控制信息中还包括位于接收资源池中的寻呼资源的位置信息时，接收模块21还用于接收基站发送的寻呼指示消息；相应地，发送模块23还用于根据接收模块21接收的寻呼资源的位置信息和寻呼指示消息发送寻呼消息，该寻呼消息用于指示基站覆盖范围内的每个V2V终端均在接收资源池中监听基站广播的携带有已调整的资源控制信息的第二系统消息，该第二系统消息用于指示基站覆盖范围内的V2V终端根据已调整的资源控制信息发送和接收安全消息，以及测量、或测量和发送第二系统消息所广播的发送资源池的资源负载值；本实施例在具体实现中，基站可以在接收资源池中保留一个资源，即专用于发送该寻呼消息的寻呼资源，该寻呼资源的位置信息同样由基站在第一系统消息中广播，V2V终端进入基站覆盖范围后通过监听第一系统消息获知寻呼资源的位置信息。
需要说明的是，本实施例中的V2V终端发送寻呼消息时，也可以动态选择发送该寻呼消息的资源，即只在需要发送寻呼消息的时候才选择一个资源，不需要的时候不必保留，完全由该V2V终端自己选择资源发送，同一基站覆盖范围内的其它的V2V终端在接收资源池中接收消息。
进一步地，上述实施例中已经说明发送资源池为接收资源池的子集，位于接收资源池的资源位置之内，在本实施例中，接收模块21接收的资源控制消息中，接收资源池中通常包括多个发送资源池。可选地，基站覆盖范围内的V2V终端随机的选择发送资源池中的资源，即V2V终端以等概率的方式随机选择发送资源池，则可以认为每个发送资源池中的负载状态是近似的，因此本实施例提供的数据传输装置的测量模块22，可以根据资源信息和拥塞控制参数测量其所在发送资源池的资源负载值，该测得的资源负载值可以体现出所有发送资源池的平均负载状态，也可以测量多个发送资源池的平均资源负载值；相应地，发送模块23发送第二系统消息具体用于指示第二系统消息中的每个发送资源池中的V2V终端根据已调整的资源控制信息发送和接收安全消息，以及测量、或测量第二系统消息所广播的发送资源池的资源负载值。在本实施例中，由于发送模块23发送的资源负载值可以整体反应所有发送资源池的负载状态，因此，基站广播的已调整的资源控制信息可以用于每 个发送资源池中的V2V终端发送安全消息，即本实施例中的V2V终端均位于发送资源池中。
在本实施例的另一种可能的实现方式中，基站覆盖范围内的V2V终端非随机的选择发送资源池中的资源，例如可以是基站配置的，具体可以根据V2V终端的业务延迟等因素进行配置，则可以认为每个发送资源池中的负载状态是不同的，因此，每个发送资源池中的资源负载值需要分别进行上报，即本实施例提供的数据传输装置的测量模块22，具体用于根据资源控制信息测量其所在发送资源池中的资源负载值；相应地，发送模块23发送的第二系统消息具体用于指示数据传输装置所属的V2V终端所在的发送资源池中的所有V2V终端根据已调整的资源控制信息发送和接收安全消息，以及测量、或测量和发送其所在发送资源池的资源负载值。在本实施例中，发送模块23发送的资源负载值通常仅能反应测量模块22已测量的发送资源池的负载状态，因此，基站广播的已调整的资源控制信息仅能用于该测量模块22已测量资源负载值的发送资源池中的V2V终端发送安全消息。
需要说明的是，本实施例提供的数据传输装置，其测量模块22不仅可以对其所在的发送资源池进行资源负载值的测量，还可以对第一V2V终端所在的发送资源池进行资源负载值的测量，其中，可以认为该第一V2V终端是其它发送资源池中的V2V终端，本实施例中的第一V2V终端例如可以是位于不同发送资源池中的多个终端；则发送模块23发送的第二系统消息具体用于指示数据传输装置所属的V2V终端和第一V2V终端所在发送资源池中的V2V终端根据已调整的资源控制信息发送和接收安全消息，以及测量、或测量和发送各自所在发送资源池的资源负载值。在本实施例中，基站可以根据该发送模块23发送的信息获知其已测量的发送资源池的负载状态，即数据传输装置所属的V2V终端和第一V2V终端所在的发送资源池的负载状态，因此，基站广播的已调整的资源控制信息可以用于该测量模块22所属的V2V终端和第一V2V终端所在的发送资源池中的所有V2V终端发送安全消息，即本实施例中的V2V终端位于部分发送资源池中。
在具体实现中，基站覆盖范围内可能存在一些与基站处于连接状态的第二V2V终端，由基站动态分配用于该第二V2V终端的资源传输数据，而并非使用基站广播的发送资源池中的资源，则这些第二V2V终端也可以测量发 送资源池中的负载状态并向基站上报。
还需要说明的是，本实施例中接收模块21接收的拥塞控制参数中同样可以包括基站的能力域值，或基站的能力域值和负载发送标识，用于灵活配置向基站上报负载状态的V2V终端的数量，本实施例中V2V终端的发送模块23发送资源负载值的具体发送方式，以及测量模块22测量该资源负载值的具体实现方式均与上述实施例相同，故在此不再赘述。
进一步地，本发明还提供上述图1和图6，以及图7和图8中各数据传输装置对应的实体装置，具体地，图9为本发明一实施例所提供的一种基站的结构示意图，图10为本发明一实施例所提供的一种V2V终端的结构示意图。
同样参考上述图2所示的V2V通信的应用场景，如上述图9和图10所示实施例，图9所示实施例中基站覆盖范围内具有至少一个如图10所示实施例中的V2V终端。
在具体实现中，上述图9所示实施例提供的基站具体包括：收发器31和处理器32，该收发器31具体用于实现上述图1和图6所示各实施例中发送模块11和接收模块12的各项功能，该处理器32具体用于实现上述图1和图6所示各实施例中调整模块13的各项功能，上述处理器32例如可以是一个中央处理器(Central Processing Unit，简称为：CPU)，或者是特定集成电路(Application Specific Integrated Circuit，简称为：ASIC)，或者是完成实施本发明实施例的一个或多个集成电路。
上述图10所示实施例提供的V2V终端具体包括：收发器41和处理器42，该收发器41具体用于实现上述图7和图8所示各实施例中接收模块21和发送模块23的各项功能，该处理器42具体用于实现上述图7和图8所示各实施例中测量模块22和判断模块24的各项功能，上述处理器42例如可以是一个CPU，或者是ASIC，或者是完成实施本发明实施例的一个或多个集成电路。
本发明实施例还提供一种的V2V通信系统，具体包括如上述图9所示实施例提供的基站和如上述图10所示实施例提供的V2V终端，本实施例中的基站和V2V终端所执行的各项操作与上述图9和图10所示的基站和V2V终端所执行的各项操作相同，故在此不再赘述。
实施例五
图11为本发明实施例五所提供的一种V2V通信方法的流程图。本实施例的方法适用于执行V2V通信的情况，该方法可以由V2V通信系统中的基站执行，该基站通常以硬件和软件的方式来实现，与该基站覆盖范围内的V2V终端通过消息交互，进行拥塞控制管理。本实施例的方法包括如下步骤：
S110，基站广播第一系统消息，该第一系统消息携带资源控制信息，该第一系统消息用于指示基站覆盖范围内的V2V终端根据资源控制信息发送和接收安全信息，以及测量资源负载值。
本实施例同样可以参考上述图2所示V2V通信的应用场景，在本实施例中，V2V终端进入基站的覆盖范围后，可以接收到第一系统消息，获取其中包含的资源控制信息，该资源控制信息包括资源信息，资源信息包括发送资源池信息和接收资源池的资源位置，发送资源池为接收资源池的子集，位于接收资源池的资源位置之内。另外，资源控制信息还可以包括车辆发送参数和拥塞控制参数，车辆发送参数用于调整后续安全信息的发送行为，拥塞控制参数用于指示V2V终端在发送资源池中测量、或测量和发送资源负载值，上述车辆发送参数和拥塞控制参数也可以为V2V终端中预配置的，车辆发送参数可以包括安全消息的发送时间间隔和发送功率中的至少一项，拥塞控制参数可以包括用于V2V终端执行测量的持续时间和资源负载阈值。
S120，基站接收第一V2V终端发送的资源负载值。
本实施例中与基站建立连接并向基站发送资源负载值的第一V2V终端具体为测得的资源负载值满足资源负载阈值的V2V终端，基站覆盖范围内的其它V2V终端则无需上报其测量的资源负载值；需要说明的是，第一V2V终端的数量可以是一个或多个。
本实施例在具体实现中，资源负载阈值可以包括第一资源负载阈值和第二资源负载阈值，则第一V2V终端具体为测得的资源负载值大于第一资源负载阈值，或者测得的资源负载值小于第二资源负载阈值时，向基站发送资源负载值的V2V终端。
S130，基站根据接收到的资源负载值对资源控制信息的内容进行调整。
在本实施例中，基站调整的内容不限于第一系统消息中携带的资源控制 信息的内容，若车辆发送参数和拥塞控制参数为V2V终端中预配置的，基站可以对车辆发送参数和拥塞控制参数的内容进行调整，并将调整后的参数添加到资源控制信息中。
S140，基站向基站覆盖范围内的V2V终端广播已调整的资源控制信息。
在本实施例中，基站根据第一V2V终端的上报情况，对资源控制信息的内容进行调整，该调整后的资源控制信息适应当前状态下的V2V终端发送安全消息，从而基站向其覆盖范围内的V2V终端广播上述已调整的内容，使得V2V终端可以使用适应当前状态下的资源控制信息发送安全消息，实现基站对其覆盖范围内的V2V终端的集中拥塞控制，以提高每个发送资源池中资源的利用率。需要说明的是，本实施例中发送资源池可以为一个或多个。
本实施例在具体实现中，当基站中预设有拥塞控制阈值时，S130可以包括：基站在接收到的资源负载值的数量大于拥塞控制阈值时，对资源控制信息的内容进行调整，调整的内容包括资源信息和车辆发送参数的内容中的至少一项，还选择性的包括拥塞控制参数中的一项或多项，其中，车辆发送参数包括安全消息的发送时间间隔和发送功率中的至少一项，拥塞控制参数包括用于V2V终端执行测量的持续时间和资源负载阈值。
需要说明的是，本实施例中的资源信息还可以包括可用的频点、带宽信息，车辆发送参数还可以包括调制编码格式，本发明实施例不限制资源控制信息的具体内容，只要是可以用于指示基站覆盖范围内的V2V终端以该基站指示的方式发送和接收安全消息，并用于测量基站广播的发送资源池中的负载状态的资源负载值，保证基站可以对其覆盖范围内的V2V终端进行集中拥塞控制的信息，均可以用于本发明实施例中。
还需要说明的是，若调整后的资源控制信息中加入新的接收资源池和发送资源池，该新的接收资源池和发送资源池可以是在原有的频点和带宽上分配的，也可以是在新加入的频点和带宽上分配的，则V2V终端可以根据该新加入信息选择资源；若还包含了新的接收资源池，则V2V终端可以在新的接收资源池中接收安全消息；若还包含了新的频点、带宽，以及在新的频带资源上的发送资源池、接收资源池，则V2V终端可以根据该些信息的指示，在新的频带上的发送资源池中选择资源，在新的接收资源池中接收消息。
本发明实施例提供的V2V通信方法可以由本发明图1所示实施例提 供的数据传输装置执行，方法的各步骤与本发明实施例提供的数据传输装置的各模块功能对应，其实现原理和技术效果类似，此处不再赘述。
可选地，本实施例的基站广播资源控制信息中，当拥塞控制参数中还包括基站的能力域值时，在S120中，基站具体接收到第三V2V终端发送的资源负载值，该第三V2V终端为自身的标识信息是能力域值的整数倍的第一V2V终端。进一步地，当拥塞控制参数还包括负载发送标识时，在S120中，基站具体接收到第四V2V终端发送的资源负载值，其中，该第四V2V终端为负载发送标识指示为上报时，自身的标识信息是能力域值的整数倍的第一V2V终端；或者，该第四V2V终端为负载发送标识指示为不上报时，自身的标识信息是能力域值的非整数倍的第一V2V终端。本实施例中的能力阈值的内容和发送标识的指示方式，以及第一V2V终端确定是否发送资源负载值的方式均与上述实施例相同，故在此不再赘述。
需要说明的是，上述实施例的S120中基站接收到的资源负载值可以为第一V2V终端通过RRC信令或者通过MAC CE发送的。
进一步地，上述实施例的S120中基站接收到资源负载值可以为第一V2V终端对发送资源池中PRB的使用率的测量结果，具体可以参考上述实施例中的(1)式；或者还可以为第一V2V终端对发送资源池中PRB的碰撞率的测量结果，具体可以参考上述实施例中的(2)式。
可选地，图12为本发明实施例所提供的另一种V2V通信方法的流程图，在上述图11所示实施例的基础上，图12所示实施例提供的V2V通信方法中，在S140之前还包括：S131，基站发送寻呼消息，或者基站指示第一V2V终端发送寻呼消息；则S140替换为：基站广播携带有已调整的资源控制信息的第二系统消息，第二系统消息用于指示基站覆盖范围内的V2V终端根据已调整的资源控制信息发送和接收安全消息，以及测量、或测量和发送第二系统消息所广播的发送资源池的资源负载值。
在本实施例中，可以由基站直接发送寻呼消息，也可以由基站指示第一V2V终端发送寻呼消息。一方面，基站发送寻呼消息的方式可以为：基站向基站覆盖范围内的每个V2V终端分别发送寻呼消息；或者，基站在接收资源池中发送寻呼消息，寻呼消息用于指示基站覆盖范围内的每个V2V终端均在接收资源池中监听第二系统消息。另一方面，由基站指示第一V2V终端发送 寻呼消息的方式可以为：资源控制信息中还可以包括位于接收资源池中的寻呼资源的位置信息，基站向第一V2V终端发送寻呼指示消息，寻呼指示消息用于指示第一V2V终端根据寻呼指示消息和寻呼资源的位置信息发送寻呼消息，寻呼消息用于指示基站覆盖范围内的每个V2V终端均在接收资源池中监听第二系统消息。
需要说明的是，本实施例中的第一V2V终端发送寻呼消息时，也可以动态选择发送该寻呼消息的资源，即只在需要发送寻呼消息的时候才选择一个资源，不需要的时候不必保留，完全由该第一V2V终端自己选择资源发送，同一基站覆盖范围内的其它的V2V终端在接收资源池中接收消息。
进一步地，上述实施例中已经说明发送资源池为接收资源池的子集，位于接收资源池的资源位置之内，在本实施例中，基站广播的资源控制消息中，接收资源池中通常包括多个发送资源池。可选地，基站覆盖范围内的V2V终端随机的选择发送资源池中的资源，即V2V终端均位于所述发送资源池中，则基站接收到的资源负载值包括第一V2V终端对其所在发送资源池的资源负载值的测量结果，或者包括第一V2V终端对多个发送资源池的资源负载值的平均测量结果；相应地，第二系统消息具体用于指示第二系统消息中每个发送资源池中的V2V终端根据已调整的资源控制信息发送和接收安全消息，以及测量、或测量和发送第二系统消息所广播的发送资源池中的资源负载值。
在本实施例的另一种可能的实现方式中，基站覆盖范围内的V2V终端非随机的选择发送资源池中的资源，即V2V终端位于部分发送资源池中，则基站接收到的资源负载值包括第一V2V终端对其所在发送资源池的资源负载值的测量结果；相应地，第二系统消息具体用于指示第一V2V终端所在发送资源池中的V2V终端根据已调整的资源控制信息发送和接收安全消息，以及测量、或测量和发送其所在发送资源池的资源负载值。
需要说明的是，本实施例中的第一V2V终端不仅可以对其所在的发送资源池进行资源负载值的测量，还可以对第二V2V终端所在的发送资源池进行资源负载值的测量，则基站接收到的资源负载值还包括第一V2V终端对第二V2V终端所在发送资源池的资源负载值的测量结果；相应地，第二系统消息具体用于指示所第一V2V终端和第二V2V终端所在发送资源池中的V2V终端根据已调整的资源控制信息发送和接收安全消息，以及测量、或测量和发 送各自所在发送资源池的资源负载值。
本发明实施例提供的V2V通信方法可以由本发明图6所示实施例提供的数据传输装置执行，方法的各步骤与本发明实施例提供的数据传输装置的各模块功能对应，其实现原理和技术效果类似，此处不再赘述。
在具体实现中，基站覆盖范围内可能存在一些与基站处于连接状态的第五V2V终端，由基站动态分配用于该第五V2V终端的资源传输数据，而并非使用基站广播的发送资源池中的资源，则这些第五V2V终端也可以测量发送资源池中的负载状态并向基站上报。
实施例六
图13为本发明实施例六所提供的一种V2V通信方法的流程图。本实施例的方法适用于执行V2V通信的情况，该方法可以由V2V通信系统中的V2V终端执行，该V2V终端通常以硬件和软件的方式来实现，通过与其所属覆盖范围内的基站的消息交互，执行基站对其指示的拥塞控制方案。本实施例的方法包括如下步骤：
S210，第一V2V终端接收基站广播的第一系统消息，该第一系统消息携带有资源控制信息，该第一系统消息用于指示基站覆盖范围内的车辆到车辆V2V终端根据资源控制信息发送和接收安全信息。
本实施例同样可以参考上述图2所示V2V通信的应用场景，在本实施例中，V2V终端进入基站的覆盖范围后，可以接收到第一系统消息，获取其中包含的资源控制信息，该资源控制信息包括资源信息，资源信息包括发送资源池信息和接收资源池的资源位置，发送资源池为接收资源池的子集，位于接收资源池的资源位置之内。另外，资源控制信息还可以包括车辆发送参数和拥塞控制参数，车辆发送参数用于调整后续安全信息的发送行为，拥塞控制参数用于指示V2V终端在发送资源池中测量、或测量和发送资源负载值，上述车辆发送参数和拥塞控制参数也可以为V2V终端中预配置的，车辆发送参数可以包括安全消息的发送时间间隔和发送功率中的至少一项，拥塞控制参数可以包括用于V2V终端执行测量的持续时间和资源负载阈值。
S220，第一V2V终端根据资源控制信息测量资源负载值。
在本实施例中，第一V2V终端具体测量发送资源池上得的资源负载值，可以确定出被测量的发送资源池的负载状态，并且基站覆盖范围内的V2V终 端均测量该资源负载值。
S230，第一V2V终端向基站发送测得的资源负载值，该资源负载值用于指示基站根据该资源负载值对资源控制信息的内容进行调整。
本实施例中与基站建立连接并向基站发送资源负载值的第一V2V终端具体为测得的资源负载值满足资源负载阈值的V2V终端，基站覆盖范围内的其它V2V终端则无需上报其测量的资源负载值；需要说明的是，第一V2V终端的数量可以是一个或多个。
本实施例在具体实现中，当资源负载阈值包括第一资源负载阈值和第二资源负载阈值时，S230包括：第一V2V终端在测得的资源负载值大于第一资源负载阈值或者小于第二资源负载阈值时，向基站发送资源负载值。
S240，第一V2V终端接收基站向基站覆盖范围内的V2V终端广播的已调整的资源控制信息。
在本实施例中，基站对资源控制信息调整的内容不限于其广播的资源控制信息的内容，若车辆发送参数和拥塞控制参数为V2V终端中配置的，基站同样可以对其进行调整，并将调整后的参数添加到资源控制信息中。
与上述实施例类似地，本实施例中的基站同样可以预设有拥塞控制阈值，该阈值用于宏观衡量发送资源池的负载状态，则当基站接收到的资源负载值的数量大于拥塞控制阈值时，对资源控制信息的内容进行调整，调整的内容包括资源信息和车辆发送参数的内容中的至少一项，还选择性的包括拥塞控制参数中的一项或多项，其中，车辆发送参数包括安全消息的发送时间间隔和发送功率中的至少一项，拥塞控制参数包括用于V2V终端执行测量的持续时间和资源负载阈值。
需要说明的是，本实施例中的资源信息同样可以包括可用的频点、带宽信息，车辆发送参数还可以包括调制编码格式，本发明实施例不限制资源控制信息的具体内容，只要是可以用于指示同一基站覆盖范围内的V2V终端以该基站指示的方式发送和接收安全消息，并用于测量基站广播的发送资源池中的负载状态的资源负载值，保证基站可以对其覆盖范围内的V2V终端进行集中拥塞控制的信息，均可以用于本发明实施例中。
还需要说明的是，若V2V终端接收到已调整的资源控制信息中加入新的接收资源池和发送资源池，该新的接收资源池和发送资源池可以是在原有的 频点和带宽上分配的，也可以是在新加入的频点和带宽上分配的，则V2V终端可以根据该新加入信息选择资源；若还包含了新的接收资源池，则V2V终端可以在新的接收资源池中接收安全消息；若还包含了新的频点、带宽，以及在新的频带资源上的发送资源池、接收资源池，则V2V终端可以根据该些信息的指示，在新的频带上的发送资源池中选择资源，在新的接收资源池中接收消息。
本发明实施例提供的V2V通信方法可以由本发明图7所示实施例提供的数据传输装置执行，方法的各步骤与本发明实施例提供的数据传输装置的各模块功能对应，其实现原理和技术效果类似，此处不再赘述。
可选地，图14为本发明实施例所提供的又一种V2V通信方法的流程图，在上述图13所示实施例的基础上，图14所示实施例提供的V2V通信方法中，拥塞控制参数中还包括基站的能力域值，则在S230之前，还包括：S221，第一V2V终端判断其自身的标识信息是否为能力域值的整数倍；相应地，S230替换为：当第一V2V终端判断出其自身的标识信息为能力域值的整数倍时，向基站发送测得的资源负载值。
可选地，图15为本发明实施例所提供的再一种V2V通信方法的流程图，同样在上述图13所示实施例的基础上，图15所示实施例提供的V2V通信方法中，拥塞控制参数中还包括基站的能力域值和负载发送标识，则在S230之前，还包括：S221，第一V2V终端判断其自身的标识信息为能力域值的整数倍或非整数倍；相应地，S230替换为：当第一V2V终端判断出其自身的标识信息为能力域值为整数倍，以及负载发送标识指示为上报时，向基站发送测得的资源负载值；或者，当第一V2V终端判断出其自身的标识信息为能力域值为非整数倍，以及负载发送标识指示为不上报时，向基站发送测得的资源负载值。本实施例中V2V终端在测量出资源负载值满足资源负载阈值时，确认是否向基站发送该测量的资源负载值的多种实现方式，以及达到的有益效果与上述实施例类似，故在此不再赘述。
与上述实施例类似地，本实施例的S230中，第一V2V终端发送资源负载值的方式例如可以包括：第一V2V终端通过RRC信令或者通过MAC CE向基站发送测得的资源负载值。
进一步地，图13到图15所示实施例中的S220可以为：第一V2V终端 对发送资源池中PRB的使用率进行测量，测得的资源负载值可以参考上述实施例中的(1)式；或者还可以为：第一V2V终端对发送资源池中PRB的碰撞率进行测量，测得的资源负载值具体可以参考上述实施例中的(2)式。
在上述图12到图14所示各实施例的基础上，当资源控制信息中还包括位于接收资源池中的寻呼资源的位置信息时，本实施例提供的方法还包括：第一V2V终端接收基站发送的寻呼指示消息；从而根据寻呼资源的位置信息和寻呼指示消息发送寻呼消息，寻呼消息用于指示基站覆盖范围内的每个V2V终端均接收资源池中监听基站广播的携带有已调整的资源控制信息的第二系统消息，第二系统消息用于指示基站覆盖范围内的V2V终端根据已调整的资源控制信息发送和接收安全消息，以及测量、或测量和发送第二系统消息所广播的发送资源池的资源负载值。
需要说明的是，本实施例中的第一V2V终端发送寻呼消息时，也可以动态选择发送该寻呼消息的资源，即只在需要发送寻呼消息的时候才选择一个资源，不需要的时候不必保留，完全由该第一V2V终端自己选择资源发送，同一基站覆盖范围内的其它的V2V终端在接收资源池中接收消息。
进一步地，上述实施例中已经说明发送资源池为接收资源池的子集，位于接收资源池的资源位置之内，本实施例的第一V2V终端接收到的资源控制消息中，接收资源池中通常包括多个发送资源池。可选地，基站覆盖范围内的V2V终端随机的选择发送资源池中的资源，即V2V终端均位于发送资源池中，则S220可以替换为：第一V2V终端根据资源控制信息测量其所在发送资源池的资源负载值，或者测量多个发送资源池的平均资源负载值；相应地，第二系统消息具体用于指示第二系统消息中的每个发送资源池中的V2V终端根据已调整的资源控制信息发送和接收安全消息，以及测量、或测量和发送第二系统消息所广播的发送资源池的资源负载值。
在本实施例的另一种可能的实现方式中，基站覆盖范围内的V2V终端非随机的选择发送资源池中的资源，即V2V终端位于部分发送资源池中，则S220可以替换为：第一V2V终端根据资源控制信息测量其所在发送资源池中的资源负载值；相应地，第二系统消息具体用于指示第一V2V终端所在发送资源池中的所有V2V终端根据已调整的资源控制信息发送和接收安全消息，以及测量、或测量和发送其所在发送资源池的资源负载值。
需要说明的是，本实施例中的第一V2V终端不仅可以对其所在的发送资源池进行资源负载值的测量，还可以对第二V2V终端所在的发送资源池进行资源负载值的测量，则第二系统消息具体用于指示所第一V2V终端和第二V2V终端所在发送资源池中的V2V终端根据已调整的资源控制信息发送和接收安全消息，以及测量、或测量和发送各自所在发送资源池的资源负载值。
在具体实现中，基站覆盖范围内可能存在一些与基站处于连接状态的第二V2V终端，由基站动态分配用于该第二V2V终端的资源传输数据，而并非使用基站广播的发送资源池中的资源，则这些第二V2V终端也可以测量发送资源池中的负载状态并向基站上报。
本发明实施例提供的V2V通信方法可以由本发明图8所示实施例提供的数据传输装置执行，方法的各步骤与本发明实施例提供的数据传输装置的各模块功能对应，其实现原理和技术效果类似，此处不再赘述。
本领域普通技术人员可以理解：实现上述各方法实施例的全部或部分步骤可以通过程序指令相关的硬件来完成。前述的程序可以存储于一计算机可读取存储介质中。该程序在执行时，执行包括上述各方法实施例的步骤；而前述的存储介质包括：ROM、RAM、磁碟或者光盘等各种可以存储程序代码的介质。
最后应说明的是：以上各实施例仅用以说明本发明的技术方案，而非对其限制；尽管参照前述各实施例对本发明进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分或者全部技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本发明各实施例技术方案的范围。

Claims (57)

  1. 一种数据传输装置，其特征在于，包括：
    发送模块，用于广播第一系统消息，所述第一系统消息携带所述资源控制信息，所述第一系统消息用于指示所述基站覆盖范围内的V2V终端根据所述资源控制信息发送和接收安全信息，以及测量资源负载值；
    接收模块，用于接收第一V2V终端发送的资源负载值；
    调整模块，用于根据所述接收模块接收到的资源负载值对所述资源控制信息的内容进行调整；
    所述发送模块，还用于向所述基站覆盖范围内的V2V终端广播所述已调整的资源控制信息。
  2. 根据权利要求1所述的数据传输装置，其特征在于，所述发送模块广播的所述资源控制信息包括资源信息，所述资源信息包括接收资源池的资源位置和发送资源池的资源位置。
  3. 根据权利要求1所述的数据传输装置，其特征在于，所述发送模块广播的所述资源控制信息包括资源信息、车辆发送参数和拥塞控制参数，所述资源信息包括接收资源池的资源位置和发送资源池的资源位置，所述车辆发送参数用于调整后续安全信息的发送行为，所述拥塞控制参数用于指示所述V2V终端在所述发送资源池中测量、或测量和发送所述资源负载值。
  4. 根据权利要求2或3所述的数据传输装置，其特征在于，当所述基站中预设有拥塞控制阈值时，所述调整模块，具体用于在所述接收模块接收到的资源负载值的数量大于所述拥塞控制阈值时，对所述资源控制信息的内容进行调整，所述调整的内容包括所述资源信息和所述车辆发送参数的内容中的至少一项，还选择性的包括所述拥塞控制参数中的一项或多项，其中，所述车辆发送参数包括所述安全消息的发送时间间隔和发送功率中的至少一项，所述拥塞控制参数包括用于所述V2V终端执行测量的持续时间和资源负载阈值。
  5. 根据权利要求4所述的数据传输装置，其特征在于，当所述资源负载阈值包括第一资源负载阈值和第二资源负载阈值时，所述第一V2V终端具体为测得的资源负载值大于所述第一资源负载阈值，或者测得的资源负载值小于所述第二资源负载阈值时，向所述基站发送所述资源负载值的V2V终端。
  6. 根据权利要求1～5中任一项所述的数据传输装置，其特征在于，所述发送模块包括第一发送单元，用于发送寻呼消息，或者指示所述第一V2V终端发送寻呼消息；
    第二发送单元，用于广播携带有所述已调整的资源控制信息的第二系统消息，所述第二系统消息用于指示所述基站覆盖范围内的所述V2V终端根据所述已调整的资源控制信息发送和接收所述安全消息，以及测量、或测量和发送所述第二系统消息所广播的发送资源池的资源负载值。
  7. 根据权利要求6所述的数据传输装置，其特征在于，所述发送资源池的资源位置位于所述接收资源池的资源位置中，当所述接收资源池中包括多个所述发送资源池，并且所述V2V终端均位于所述发送资源池中时，所述接收模块接收到的资源负载值包括所述第一V2V终端对其所在发送资源池的资源负载值的测量结果，或者包括所述第一V2V终端对所述多个发送资源池的资源负载值的平均测量结果；
    则所述第二系统消息具体用于指示所述第二系统消息中每个所述发送资源池中的V2V终端根据所述已调整的资源控制信息发送和接收所述安全消息，以及测量、或测量和发送所述第二系统消息所广播的发送资源池中的资源负载值。
  8. 根据权利要求6所述的数据传输装置，其特征在于，所述发送资源池的资源位置位于所述接收资源池的资源位置中，当所述接收资源池中包括多个所述发送资源池，并且所述V2V终端位于部分所述发送资源池中时，所述接收模块接收到的资源负载值包括所述第一V2V终端对其所在发送资源池的资源负载值的测量结果；
    则所述第二系统消息具体用于指示所述第一V2V终端所在发送资源池中的V2V终端根据所述已调整的资源控制信息发送和接收所述安全消息，以及测量、或测量和发送其所在发送资源池的资源负载值。
  9. 根据权利要求8所述的数据传输装置，其特征在于，所述接收模块接收到的资源负载值还包括所述第一V2V终端对第二V2V终端所在发送资源池的资源负载值的测量结果；
    则所述第二系统消息具体用于指示所述第一V2V终端和所述第二V2V终端所在发送资源池中的V2V终端根据所述已调整的资源控制信息发送和接 收所述安全消息，以及测量、或测量和发送各自所在发送资源池的资源负载值。
  10. 根据权利要求6所述的数据传输装置，其特征在于，所述第一发送单元用于发送寻呼消息，具体包括：向所述基站覆盖范围内的每个V2V终端分别发送所述寻呼消息；或者，在所述接收资源池中发送所述寻呼消息，所述寻呼消息用于指示所述基站覆盖范围内的每个V2V终端均在所述接收资源池中监听所述第二系统消息。
  11. 根据权利要求6所述的数据传输装置，其特征在于，当所述资源控制信息中还包括位于所述接收资源池中的寻呼资源的位置信息时，所述第一发送单元用于指示所述第一V2V终端发送寻呼消息，具体包括：向所述第一V2V终端发送寻呼指示消息，所述寻呼指示消息用于指示所述第一V2V终端根据所述寻呼指示消息和所述寻呼资源的位置信息发送所述寻呼消息，所述寻呼消息用于指示所述基站覆盖范围内的每个V2V终端均在所述接收资源池中监听所述第二系统消息。
  12. 根据权利要求1～11中任一项所述的数据传输装置，其特征在于，所述接收模块接收到的资源负载值为所述第一V2V终端对所述发送资源池中物理资源块PRB的使用率的测量结果，所述RPB的使用率具体为：
    Figure PCTCN2015079814-appb-100001
    其中，所述M1(T)表示所述发送资源池中，在持续时间T内已使用的PRB的数量，所述P(T)表示所述发送资源池中，在持续时间T内可用的PRB的总量，T为所述第一V2V终端执行测量的持续时间；或者，
    所述接收模块接收到的资源负载值为所述第一V2V终端对所述发送资源池中物理资源块PRB的碰撞率的测量结果，所述RPB的碰撞率具体为：
    Figure PCTCN2015079814-appb-100002
    其中，所述M1(T)表示所述发送资源池中，在持续时间T内已使用的PRB的数量，所述M2(T)表示所述发送资源池中，在持续时间T内发生碰撞的PRB的数量，T为所述第一V2V终端执行测量的持续时间。
  13. 根据权利要求1～12中任一项所述的数据传输装置，其特征在于，当所述拥塞控制参数中还包括所述基站的能力域值时，所述接收模块具体接收 到第三V2V终端发送的资源负载值，所述第三V2V终端为自身的标识信息是所述能力域值的整数倍的第一V2V终端。
  14. 根据权利要求13所述的数据传输装置，其特征在于，当所述拥塞控制参数中还包括负载发送标识时，所述接收模块具体接收到第四V2V终端发送的资源负载值，其中，所述第四V2V终端为所述负载发送标识指示为上报时，自身的标识信息是所述能力域值的整数倍的第一V2V终端；或者，所述第四V2V终端为所述负载发送标识指示为不上报时，自身的标识信息是所述能力域值的非整数倍的第一V2V终端。
  15. 根据权利要求1～14中任一项所述的数据传输装置，其特征在于，所述接收模块接收到的资源负载值为所述第一V2V终端通过无线资源控制RRC信令或者通过媒体介入控制的控制信元MAC CE发送的。
  16. 一种数据传输装置，其特征在于，设置于基站覆盖范围内的每个车辆到车辆V2V终端中，所述数据传输装置包括：
    接收模块，用于接收所述基站广播的第一系统消息，所述第一系统消息携带有资源控制信息，所述第一系统消息用于指示所述基站覆盖范围内的所述V2V终端根据所述资源控制信息发送和接收安全信息；
    测量模块，用于根据所述资源控制信息测量资源负载值；
    发送模块，用于向所述基站发送所述测量模块测得的资源负载值，所述资源负载值用于指示所述基站根据所述资源负载值对所述资源控制信息的内容进行调整；
    所述接收模块，还用于接收所述基站向所述基站覆盖范围内的所述V2V终端广播的所述已调整的资源控制信息。
  17. 根据权利要求16所述的数据传输装置，其特征在于，所述接收模块接收到的所述资源控制信息包括资源信息，所述资源信息包括接收资源池的资源位置和发送资源池的资源位置。
  18. 根据权利要求16所述的数据传输装置，其特征在于，所述接收模块接收到的所述资源控制信息包括资源信息、车辆发送参数和拥塞控制参数，所述资源信息包括接收资源池的资源位置和发送资源池的资源位置，所述车辆发送参数用于调整后续安全信息的发送行为，所述拥塞控制参数用于指示所述V2V终端在所述发送资源池中测量、或测量和发送所述资源负载值。
  19. 根据权利要求17或18所述的数据传输装置，其特征在于，当所述基站中预设有拥塞控制阈值时，所述资源负载值具体用于指示所述基站在接收到的所述资源负载值的数量大于所述拥塞控制阈值时，对所述资源控制信息的内容进行调整，所述调整的内容包括所述资源信息和所述车辆发送参数的内容中的至少一项，还选择性的包括所述拥塞控制参数中的一项或多项，其中，所述车辆发送参数包括所述安全消息的发送时间间隔和发送功率中的至少一项，所述拥塞控制参数包括用于所述V2V终端执行测量的持续时间和资源负载阈值。
  20. 根据权利要求19所述的数据传输装置，其特征在于，当所述资源负载阈值包括第一资源负载阈值和第二资源负载阈值时，所述发送模块，具体用于在所述测量模块测得的资源负载值大于所述第一资源负载阈值或者小于所述第二资源负载阈值时，向所述基站发送所述测量模块测得的资源负载值。
  21. 根据权利要求16～20中任一项所述的数据传输装置，其特征在于，当所述接收模块接收的资源控制信息中还包括位于所述接收资源池中的寻呼资源的位置信息时，所述接收模块，还用于接收所述基站发送的寻呼指示消息；
    则所述发送模块，还用于根据所述接收模块接收的寻呼资源的位置信息和寻呼指示消息发送寻呼消息，所述寻呼消息用于指示所述基站覆盖范围内的每个V2V终端均在所述接收资源池中监听所述基站广播的携带有所述已调整的资源控制信息的第二系统消息，所述第二系统消息用于指示所述基站覆盖范围内的所述V2V终端根据所述已调整的资源控制信息发送和接收所述安全消息，以及测量、或测量和发送所述第二系统消息所广播的发送资源池的资源负载值。
  22. 根据权利要求21所述的数据传输装置，其特征在于，所述发送资源池的资源位置位于所述接收资源池的资源位置中，当所述接收资源池中包括多个所述发送资源池，并且所述V2V终端均位于所述发送资源池中时，所述测量模块，具体用于所述资源控制信息测量其所在发送资源池的资源负载值，或者测量所述多个发送资源池的平均资源负载值；
    则所述第二系统消息具体用于指示所述第二系统消息中的每个所述发送资源池中的V2V终端根据所述已调整的资源控制信息发送和接收所述安全消 息，以及测量、或测量和发送所述第二系统消息所广播的发送资源池的资源负载值。
  23. 根据权利要求21所述的数据传输装置，其特征在于，所述发送资源池的资源位置位于所述接收资源池的资源位置中，当所述接收资源池中包括多个所述发送资源池，并且所述V2V终端位于部分所述发送资源池中时，所述测量模块，具体用于根据所述资源控制信息测量其所在发送资源池中的资源负载值；
    则所述第二系统消息具体用于指示所述数据传输装置所属V2V终端所在发送资源池中的所有V2V终端根据所述已调整的资源控制信息发送和接收所述安全消息，以及测量、或测量和发送其所在发送资源池的资源负载值。
  24. 根据权利要求23所述的数据传输装置，其特征在于，所述测量模块，还用根据所述资源控制信息测量第一V2V终端所在发送资源池的资源负载值；
    则所述第二系统消息具体用于指示所述数据传输装置所属V2V终端和所述第一V2V终端所在发送资源池中的V2V终端根据所述已调整的资源控制信息发送和接收所述安全消息，以及测量、或测量和发送各自所在发送资源池的资源负载值。
  25. 根据权利要求16～24中任一项所述的数据传输装置，其特征在于，所述测量模块，具体用于对所述发送资源池中物理资源块PRB的使用率进行测量，测得的所述资源负载值具体为：
    Figure PCTCN2015079814-appb-100003
    其中，所述M1(T)表示所述发送资源池中，在持续时间T内已使用的PRB的数量，所述P(T)表示所述发送资源池中，在持续时间T内可用的PRB的总量，T为所述数据传输装置所属的V2V终端执行测量的持续时间；或者，
    所述测量模块，具体用于对所述发送资源池中物理资源块PRB的碰撞率进行测量，测得的所述资源负载值具体为：
    Figure PCTCN2015079814-appb-100004
    其中，所述M1(T)表示所述发送资源池中，在持续时间T内已使用的PRB的数量，所述M2(T)表示所述发送资源池中，在持续时间T内发生碰撞的PRB 的数量，T为所述数据传输装置所属的V2V终端执行测量的持续时间。
  26. 根据权利要求16～25中任一项所述的数据传输装置，其特征在于，当所述接收模块接收到的拥塞控制参数中还包括所述基站的能力域值时，所述数据传输装置还包括：判断模块，用于在所述发送模块向所述基站发送所述测量模块所测得的资源负载值之前，判断其所属V2V终端的标识信息是否为所述能力域值的整数倍；
    则所述发送模块用于向所述基站发送所述资源负载值，具体包括：当所述判断模块判断出其所属V2V终端的标识信息为所述能力域值的整数倍时，向所述基站发送所述测量模块测得的资源负载值。
  27. 根据权利要求26所述的数据传输装置，其特征在于，当所述拥塞控制参数中还包括负载发送标识时，所述判断模块，具体用于在所述发送模块向所述基站发送所述测量模块所测得的资源负载值之前，判断其所属V2V终端的标识信息为所述能力域值的整数倍或非整数倍；
    则所述发送模块用于向所述基站发送所述资源负载值，具体包括：当所述判断模块判断出其所属V2V终端的标识信息为所述能力域值的整数倍，以及所述负载发送标识指示为上报时，向所述基站发送所述测量模块测得的资源负载值；或者，
    当所述判断模块判断出其所属V2V终端的标识信息为所述能力域值的非整数倍，以及所述负载发送标识指示为不上报时，向所述基站发送所述测量模块测得的资源负载值。
  28. 根据权利要求16～27中任一项所述的数据传输装置，其特征在于，所述发送模块用于向所述基站发送所述资源负载值，具体包括：通过无线资源控制RRC信令或者通过媒体介入控制的控制信元MAC CE向所述基站发送所述资源负载值。
  29. 一种车辆到车辆通信系统，其特征在于，包括：基站和至少一个车辆到车辆V2V终端，所述基站中设置有如权利要求1～15中任一项所述的数据传输装置，每个所述V2V终端中设置有如权利要求16～28中任一项所述的数据传输装置。
  30. 一种车辆到车辆通信方法，其特征在于，包括：
    所述基站广播第一系统消息，所述第一系统消息携带所述资源控制信息， 所述第一系统消息用于指示所述基站覆盖范围内的V2V终端根据所述资源控制信息发送和接收安全信息，以及测量资源负载值；
    所述基站接收第一V2V终端发送的资源负载值；
    所述基站根据所述接收到的资源负载值对所述资源控制信息的内容进行调整；
    所述基站向所述基站覆盖范围内的V2V终端广播所述已调整的资源控制信息。
  31. 根据权利要求30所述的方法，其特征在于，所述资源控制信息包括资源信息，所述资源信息包括接收资源池的资源位置和发送资源池的资源位置。
  32. 根据权利要求30所述的方法，其特征在于，所述资源控制信息包括资源信息、车辆发送参数和拥塞控制参数，所述资源信息包括接收资源池的资源位置和发送资源池的资源位置，所述车辆发送参数用于调整后续安全信息的发送行为，所述拥塞控制参数用于指示所述V2V终端在所述发送资源池中测量、或测量和发送所述资源负载值。
  33. 根据权利要求31或32所述的方法，其特征在于，当基站中预设有拥塞控制阈值时，所述基站根据所述接收到的资源负载值对所述资源控制信息的内容进行调整，包括：
    所述基站在所述接收到的资源负载值的数量大于所述拥塞控制阈值时，对所述资源控制信息的内容进行调整，所述调整的内容包括所述资源信息和所述车辆发送参数的内容中的至少一项，还选择性的包括所述拥塞控制参数中的一项或多项，其中，所述车辆发送参数包括所述安全消息的发送时间间隔和发送功率中的至少一项，所述拥塞控制参数包括用于所述V2V终端执行测量的持续时间和资源负载阈值。
  34. 根据权利要求33所述的方法，其特征在于，当所述资源负载阈值包括第一资源负载阈值和第二资源负载阈值时，所述第一V2V终端具体为测得的资源负载值大于所述第一资源负载阈值，或者测得的资源负载值小于所述第二资源负载阈值时，向基站发送资源负载值的V2V终端。
  35. 根据权利要求30～34中任一项所述的方法，其特征在于，还包括：
    所述基站发送寻呼消息，或者所述基站指示所述第一V2V终端发送寻呼 消息；
    所述基站向所述基站覆盖范围内的V2V终端广播所述已调整的资源控制信息，包括：
    所述基站广播携带有所述已调整的资源控制信息的第二系统消息，所述第二系统消息用于指示所述基站覆盖范围内的所述V2V终端根据所述已调整的资源控制信息发送和接收所述安全消息，以及测量、或测量和发送所述第二系统消息所广播的发送资源池的资源负载值。
  36. 根据权利要求35所述的方法，其特征在于，所述发送资源池的资源位置位于所述接收资源池的资源位置中，当所述接收资源池中包括多个所述发送资源池，并且所述V2V终端均位于所述发送资源池中时，所述基站接收到的所述资源负载值包括所述第一V2V终端对其所在发送资源池的资源负载值的测量结果，或者包括所述第一V2V终端对所述多个发送资源池的资源负载值的平均测量结果；
    则所述第二系统消息具体用于指示所述第二系统消息中每个所述发送资源池中的V2V终端根据所述已调整的资源控制信息发送和接收所述安全消息，以及测量、或测量和发送所述第二系统消息所广播的发送资源池中的资源负载值。
  37. 根据权利要求35所述的方法，其特征在于，所述发送资源池的资源位置位于所述接收资源池的资源位置中，当所述接收资源池中包括多个所述发送资源池，并且所述V2V终端位于部分所述发送资源池中时，所述基站接收到的所述资源负载值包括所述第一V2V终端对其所在发送资源池的资源负载值的测量结果；
    则所述第二系统消息具体用于指示所述第一V2V终端所在发送资源池中的V2V终端根据所述已调整的资源控制信息发送和接收所述安全消息，以及测量、或测量和发送其所在发送资源池的资源负载值。
  38. 根据权利要求37所述的方法，其特征在于，所述基站接收到的所述资源负载值还包括所述第一V2V终端对第二V2V终端所在发送资源池的资源负载值的测量结果；
    则所述第二系统消息具体用于指示所第一V2V终端和所述第二V2V终端所在发送资源池中的V2V终端根据所述已调整的资源控制信息发送和接收 所述安全消息，以及测量、或测量和发送各自所在发送资源池的资源负载值。
  39. 根据权利要求35所述的方法，其特征在于，所述基站发送寻呼消息，包括：
    所述基站向所述基站覆盖范围内的每个V2V终端分别发送所述寻呼消息；或者，
    所述基站在所述接收资源池中发送所述寻呼消息，所述寻呼消息用于指示所述基站覆盖范围内的每个V2V终端均在所述接收资源池中监听所述第二系统消息。
  40. 根据权利要求35所述的方法，其特征在于，当所述资源控制信息中还包括位于所述接收资源池中的寻呼资源的位置信息时，所述基站指示所述第一V2V终端发送寻呼消息，包括：
    所述基站向所述第一V2V终端发送寻呼指示消息，所述寻呼指示消息用于指示所述第一V2V终端根据所述寻呼指示消息和所述寻呼资源的位置信息发送所述寻呼消息，所述寻呼消息用于指示所述基站覆盖范围内的每个V2V终端均在所述接收资源池中监听所述第二系统消息。
  41. 根据权利要求30～40中任一项所述的方法，其特征在于，所述基站接收到的所述资源负载值为所述第一V2V终端对所述发送资源池中物理资源块PRB的使用率的测量结果，所述RPB的使用率具体为：
    Figure PCTCN2015079814-appb-100005
    其中，所述M1(T)表示所述发送资源池中，在持续时间T内已使用的PRB的数量，所述P(T)表示所述发送资源池中，在持续时间T内可用的PRB的总量，T为所述第一V2V终端执行测量的持续时间；或者，
    所述基站接收到的所述资源负载值为所述第一V2V终端对所述发送资源池中物理资源块PRB的碰撞率的测量结果，所述RPB的碰撞率具体为：
    Figure PCTCN2015079814-appb-100006
    其中，所述M1(T)表示所述发送资源池中，在持续时间T内已使用的PRB的数量，所述M2(T)表示所述发送资源池中，在持续时间T内发生碰撞的PRB的数量，T为所述第一V2V终端执行测量的持续时间。
  42. 根据权利要求30～41中任一项所述的方法，其特征在于，当所述拥 塞控制参数中还包括所述基站的能力域值时，所述基站具体接收到第三V2V终端发送的资源负载值，所述第三V2V终端为自身的标识信息是所述能力域值的整数倍的第一V2V终端。
  43. 根据权利要求42所述的方法，其特征在于，当所述拥塞控制参数中还包括负载发送标识时，所述基站具体接收到第四V2V终端发送的资源负载值，其中，所述第四V2V终端为所述负载发送标识指示为上报时，自身的标识信息是所述能力域值的整数倍的第一V2V终端；或者，所述第四V2V终端为所述负载发送标识指示为不上报时，自身的标识信息是所述能力域值的非整数倍的第一V2V终端。
  44. 根据权利要求30～43中任一项所述的方法，其特征在于，所述基站接收到的所述资源负载值为所述第一V2V终端通过无线资源控制RRC信令或者通过媒体介入控制的控制信元MAC CE发送的。
  45. 一种车辆到车辆通信方法，其特征在于，包括：
    第一V2V终端接收基站广播的第一系统消息，所述第一系统消息携带有资源控制信息，所述第一系统消息用于指示所述基站覆盖范围内的车辆到车辆V2V终端根据所述资源控制信息发送和接收安全信息；
    所述第一V2V终端根据所述资源控制信息测量资源负载值；
    所述第一V2V终端向所述基站发送所述测得的资源负载值，所述资源负载值用于指示所述基站根据所述资源负载值对所述资源控制信息的内容进行调整；
    所述第一V2V终端接收所述基站向所述基站覆盖范围内的所述V2V终端广播的所述已调整的资源控制信息。
  46. 根据权利要求45所述的方法，其特征在于，所述第一V2V终端接收到的所述资源控制信息包括资源信息，所述资源信息包括接收资源池的资源位置和发送资源池的资源位置。
  47. 根据权利要求45所述的方法，其特征在于，所述第一V2V终端接收到的所述资源控制信息包括资源信息、车辆发送参数和拥塞控制参数，所述资源信息包括接收资源池的资源位置和发送资源池的资源位置，所述车辆发送参数用于调整后续安全信息的发送行为，所述拥塞控制参数用于指示所述V2V终端在所述发送资源池中测量、或测量和发送所述资源负载值。
  48. 根据权利要求46或47所述的方法，其特征在于，当所述基站中预设有拥塞控制阈值时，所述资源负载值具体用于指示所述基站在接收到的所述资源负载值的数量大于所述拥塞控制阈值时，对所述资源控制信息的内容进行调整，所述调整的内容包括所述资源信息和所述车辆发送参数的内容中的至少一项，还选择性的包括所述拥塞控制参数中的一项或多项，其中，所述车辆发送参数包括所述安全消息的发送时间间隔和发送功率中的至少一项，所述拥塞控制参数包括用于所述V2V终端执行测量的持续时间和资源负载阈值。
  49. 根据权利要求48所述的方法，其特征在于，当所述资源负载阈值包括第一资源负载阈值和第二资源负载阈值时，所述第一V2V终端向所述基站发送所述测得的资源负载值，包括：
    所述第一V2V终端在所述测得的资源负载值大于所述第一资源负载阈值或者小于所述第二资源负载阈值时，向所述基站发送所述资源负载值。
  50. 根据权利要求45～49中任一项所述的方法，其特征在于，当所述资源控制信息中还包括位于所述接收资源池中的寻呼资源的位置信息时，所述方法还包括：
    所述第一V2V终端接收所述基站发送的寻呼指示消息；
    所述第一V2V终端根据所述寻呼资源的位置信息和所述寻呼指示消息发送寻呼消息，所述寻呼消息用于指示所述基站覆盖范围内的每个V2V终端均所述接收资源池中监听所述基站广播的携带有所述已调整的资源控制信息的第二系统消息，所述第二系统消息用于指示所述基站覆盖范围内的所述V2V终端根据所述已调整的资源控制信息发送和接收所述安全消息，以及测量、或测量和发送所述第二系统消息所广播的发送资源池的资源负载值。
  51. 根据权利要求50所述的方法，其特征在于，所述发送资源池的资源位置位于所述接收资源池的资源位置中，当所述接收资源池中包括多个所述发送资源池，并且所述V2V终端均位于所述发送资源池中时，所述第一V2V终端根据所述资源控制信息测量资源负载值，包括：
    所述第一V2V终端根据所述资源控制信息测量其所在发送资源池的资源负载值，或者测量所述多个发送资源池的平均资源负载值；
    则所述第二系统消息具体用于指示所述第二系统消息中的每个所述发送 资源池中的V2V终端根据所述已调整的资源控制信息发送和接收所述安全消息，以及测量、或测量和发送所述第二系统消息所广播的发送资源池的资源负载值。
  52. 根据权利要求50所述的方法，其特征在于，所述发送资源池的资源位置位于所述接收资源池的资源位置中，当所述接收资源池中包括多个所述发送资源池，并且所述V2V终端位于部分所述发送资源池中时，所述第一V2V终端根据所述资源控制信息测量资源负载值，包括：
    所述第一V2V终端根据所述资源控制信息测量其所在发送资源池中的资源负载值；
    则所述第二系统消息具体用于指示所述第一V2V终端所在发送资源池中的所有V2V终端根据所述已调整的资源控制信息发送和接收所述安全消息，以及测量、或测量和发送其所在发送资源池的资源负载值。
  53. 根据权利要求52所述的方法，其特征在于，所述第一V2V终端根据所述资源控制信息测量资源负载值，还包括：
    所述第一V2V终端根据所述资源控制信息测量第二V2V终端所在发送资源池的资源负载值；
    则所述第二系统消息具体用于指示所第一V2V终端和所述第二V2V终端所在发送资源池中的V2V终端根据所述已调整的资源控制信息发送和接收所述安全消息，以及测量、或测量和发送各自所在发送资源池的资源负载值。
  54. 根据权利要求45～53中任一项所述的方法，其特征在于，所述第一V2V终端根据所述资源控制信息测量资源负载值，包括：
    所述第一V2V终端对所述发送资源池中物理资源块PRB的使用率进行测量，测得的所述资源负载值具体为：
    Figure PCTCN2015079814-appb-100007
    其中，所述M1(T)表示所述发送资源池中，在持续时间T内已使用的PRB的数量，所述P(T)表示所述发送资源池中，在持续时间T内可用的PRB的总量，T为所述第一V2V终端执行测量的持续时间；或者，
    所述第一V2V终端对所述发送资源池中物理资源块PRB的碰撞率进行测量，测得的所述资源负载值具体为：
    Figure PCTCN2015079814-appb-100008
    其中，所述M1(T)表示所述发送资源池中，在持续时间T内已使用的PRB的数量，所述M2(T)表示所述发送资源池中，在持续时间T内发生碰撞的PRB的数量，T为所述第一V2V终端执行测量的持续时间。
  55. 根据权利要求45～54中任一项所述的方法，其特征在于，当所述拥塞控制参数中还包括所述基站的能力域值时，所述第一V2V终端向所述基站发送所述测得的资源负载值之前，还包括：
    所述第一V2V终端判断其自身的标识信息是否为所述能力域值的整数倍；
    则所述第一V2V终端向所述基站发送所述测得的资源负载值，包括：
    当所述第一V2V终端判断出其自身的标识信息为所述能力域值的整数倍时，向所述基站发送所述测得的资源负载值。
  56. 根据权利要求55所述的方法，其特征在于，当所述拥塞控制参数中还包括负载发送标识时，所述第一V2V终端向所述基站发送所述测得的资源负载值之前，还包括：
    所述第一V2V终端判断其自身的标识信息为所述能力域值的整数倍或非整数倍；
    则所述第一V2V终端向所述基站发送所述测得的资源负载值，包括：
    当所述第一V2V终端判断出其自身的标识信息为所述能力域值为整数倍，以及所述负载发送标识指示为上报时，向所述基站发送所述测得的资源负载值；或者，
    当所述第一V2V终端判断出其自身的标识信息为所述能力域值为非整数倍，以及所述负载发送标识指示为不上报时，向所述基站发送所述测得的资源负载值。
  57. 根据权利要求45～56中任一项所述的方法，其特征在于，所述第一V2V终端向所述基站发送所述测得的资源负载值，包括：
    所述第一V2V终端通过无线资源控制RRC信令或者通过媒体介入控制的控制信元MAC CE向所述基站发送所述测得的资源负载值。
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