WO2018107960A1 - 信号发送、信息提取方法及装置、车载设备及存储介质 - Google Patents
信号发送、信息提取方法及装置、车载设备及存储介质 Download PDFInfo
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- WO2018107960A1 WO2018107960A1 PCT/CN2017/113331 CN2017113331W WO2018107960A1 WO 2018107960 A1 WO2018107960 A1 WO 2018107960A1 CN 2017113331 W CN2017113331 W CN 2017113331W WO 2018107960 A1 WO2018107960 A1 WO 2018107960A1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0078—Avoidance of errors by organising the transmitted data in a format specifically designed to deal with errors, e.g. location
- H04L1/0079—Formats for control data
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0078—Avoidance of errors by organising the transmitted data in a format specifically designed to deal with errors, e.g. location
- H04L1/009—Avoidance of errors by organising the transmitted data in a format specifically designed to deal with errors, e.g. location arrangements specific to transmitters
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0078—Avoidance of errors by organising the transmitted data in a format specifically designed to deal with errors, e.g. location
- H04L1/0091—Avoidance of errors by organising the transmitted data in a format specifically designed to deal with errors, e.g. location arrangements specific to receivers, e.g. format detection
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
Definitions
- the present invention relates to the field of wireless communications, and in particular, to a signal transmission, information extraction method and apparatus, a transmitter, a receiver, and a storage medium.
- V2V Vehicle to Vehicle
- vehicle refers to information interaction between vehicles.
- the most common form of V2V is communication between vehicles.
- vehicle is used to refer to “vehicle”. That is to say, the following "vehicle” is a generalized vehicle, which can be a car. Bicycles, electric cars, scooters, boats, airplanes, rail trains, etc. Therefore, inter-vehicle communication (V2V) can also be referred to as "vehicle networking.”
- Vehicle networking communication often requires low latency and high reliability to effectively prevent/avoid accidents.
- the mobile communication method based on the central controller (such as base station) architecture is used, the information between the vehicles needs to pass through the base station to interact, which brings two serious problems: the delay is large, and it may be difficult to meet the requirements of the Internet of Vehicles. .
- the traffic volume is large, a large number of very frequent communications will occur, and the base station may be overwhelmed, resulting in communication congestion and difficulty in meeting the low latency and high reliability requirements of the Internet of Vehicles.
- the Internet of Vehicles communication is often considered to bypass the base station and use direct communication between vehicles to reduce the delay, this is a flat communication network.
- the embodiment of the invention provides a signal transmission, information extraction method and device, a transmitter and a receiver, so as to at least solve the problem that it is difficult to demodulate information after collision and aliasing of signals between vehicles in a vehicle networking system in the related art.
- a signal transmitting method including: generating a transmission signal by using a symbol extension technique of a first designated information of a vehicle; a designated transmission channel or a first time-frequency resource in a vehicle network where the vehicle is located The transmission signal generated by the broadcast.
- an information extraction method comprising: receiving a transmission signal broadcasted by each vehicle in a car network; wherein the transmission signal is a transmission signal generated by a symbol extension technique of the first specified information of the vehicle Extracting the first specified information of each of the vehicles from the received transmission signal.
- a signal transmitting apparatus comprising: a generating module configured to generate a transmission signal by using a symbol extension technology of a first designated information of a vehicle; and a broadcast module configured to be in a vehicle network where the vehicle is located The transmission signal generated by the broadcast on the designated transmission channel or the first time-frequency resource.
- an information extracting apparatus comprising: a receiving module configured to receive a transmission signal broadcasted by each vehicle in the vehicle network; wherein the transmission signal is a symbolic extension of the first specified information of the vehicle a technology-generated transmission signal; an extraction module configured to extract first specified information of each vehicle from the received transmission signal.
- an in-vehicle device comprising a transmitter, located in a vehicle, comprising: a generator configured to generate a transmission signal by using a symbol extension technique for the first specified information of the vehicle; the radio frequency module, Connected to the generator, configured to broadcast the generated transmission signal on a designated transmission channel or first time-frequency resource of the vehicle network in which the vehicle is located.
- an in-vehicle device comprising a receiver, located in a vehicle, comprising: a transmission device configured to receive broadcasts of respective vehicles in the vehicle network Transmitting a signal; wherein the transmission signal is a transmission signal generated by the symbol extension technique of the first specified information of the vehicle; and the processor is configured to extract the first specified information of each of the vehicles from the received transmission signal.
- a vehicle comprising: the above-described transmitter and the receiver described above.
- a storage medium storing computer executable code, the computer executable code being executable, capable of implementing the signal transmission method provided by the foregoing technical solution or performing the foregoing technology
- the information extraction method provided by the scheme.
- the first designated information of the vehicle is generated by the symbol extension technology, and then the generated transmission signal is broadcasted on the designated transmission channel or the available time-frequency resource, that is, the first designation is performed by the symbol extension technology.
- the information is expanded, and thus it is possible to demodulate the information of each vehicle for the receiving end in the case of collision aliasing. Therefore, it is difficult to solve the problem that the signals between the vehicles in the vehicle networking system in the related art are collision-aliased.
- the problem of demodulating information can reduce the delay of car-network communication and support more inter-vehicle communication with the same time-frequency resources.
- FIG. 1 is a block diagram showing the hardware structure of a vehicle terminal of a signal transmitting method according to an embodiment of the present invention
- FIG. 2 is a flowchart of a signal transmitting method according to an embodiment of the present invention.
- FIG. 3 is a schematic flowchart of an information extraction method according to an embodiment of the present invention.
- FIG. 4 is a block diagram showing the structure of a signal transmitting apparatus according to an embodiment of the present invention.
- FIG. 5 is a structural block diagram of an information extracting apparatus according to an embodiment of the present invention.
- FIG. 6 is a structural block diagram of a transmitter according to an embodiment of the present invention.
- FIG. 7 is a structural block diagram of a receiver according to an embodiment of the present invention.
- FIG. 8 is a schematic diagram of a symbol extension technique provided by an alternative embodiment of the present invention.
- FIG. 9 is a schematic diagram of a scenario provided according to an alternative embodiment of the present invention.
- FIG. 10 is a schematic flowchart diagram of an information generating and transmitting method according to an alternative embodiment of the present invention.
- FIG. 11 is a schematic diagram of a method for generating and transmitting information after applying a data preamble scheme according to an alternative embodiment of the present invention.
- the first designated information of the vehicle is generated by the symbol extension technology, and then the generated transmission signal is broadcasted on the designated transmission channel or the available time-frequency resource, that is, the first specified information is extended by the symbol extension technology.
- collision aliasing it is possible to demodulate the information of each vehicle for the receiving end, and then solve the signal collision between different devices, and cannot correctly demodulate, so that the receiving end cannot correctly receive the transmitting end.
- the communication quality of the transmitted signal raises the communication quality of the V2V communication.
- FIG. 1 is a block diagram showing the hardware structure of a vehicle terminal of a signal transmission method according to an embodiment of the present invention.
- vehicle terminal 10 may include one or more (only one shown) processor 102 (processor 102 may include, but is not limited to, a processing device such as a microprocessor MCU or a programmable logic device FPGA)
- processor 102 may include, but is not limited to, a processing device such as a microprocessor MCU or a programmable logic device FPGA)
- a memory 104 for storing data
- a transmission device 106 for communication functions.
- vehicle terminal 10 may also include more or fewer components than shown in FIG. 1, or have a different configuration than that shown in FIG.
- the memory 104 can be used to store software programs of application software, a set of extended sequences and modules, such as program instructions/modules corresponding to the signal transmitting method in the embodiment of the present invention, and the processor 102 expands the sequence by running a software program stored in the memory 104.
- the methods described above are implemented by a collection and a module to perform various functional applications and data processing.
- Memory 104 may include high speed random access memory, and may also include non-volatile memory such as one or more magnetic storage devices, flash memory, or other non-volatile solid state memory.
- memory 104 may further include memory remotely located relative to processor 102, which may be coupled to vehicle terminal 10 via a network. Examples of such networks include, but are not limited to, the Internet, intranets, local area networks, mobile communication networks, and combinations thereof.
- Transmission device 106 is for receiving or transmitting data via a network.
- the above-described network specific example may include a wireless network provided by a communication provider of the vehicle terminal 10.
- the transmission device 106 includes a Network Interface Controller (NIC) that can be connected to other network devices through a base station to communicate with the Internet.
- the transmission device 106 can be a radio frequency (RF) module for wireless Ways to communicate with the Internet.
- NIC Network Interface Controller
- RF radio frequency
- FIG. 2 is a flowchart of a signal transmission method according to an embodiment of the present invention. As shown in FIG. 2, the flow includes the following steps:
- Step S202 generating a transmission signal by using a symbol extension technology by using the first specified information of the vehicle;
- Step S204 Broadcast the generated transmission signal on a designated transmission channel or a first time-frequency resource of the vehicle network where the vehicle is located.
- the first designated information of the vehicle is generated by the symbol extension technology, and then the generated transmission signal is broadcasted on the designated transmission channel or the available time-frequency resource, the first designated information is extended by the symbol extension technology.
- collision aliasing it is possible to demodulate the information of each vehicle for the receiving end. Therefore, it is possible to solve the problem that it is difficult to demodulate the information after the collision of the signals between the vehicles in the vehicle networking system in the related art.
- the problem can reduce the delay of the Internet of Vehicles communication, and can support more inter-vehicle communication with the same time-frequency resources.
- the method may further include: determining, according to the second designation information, the symbol extension technology.
- the extended sequence used wherein the second specified information is generated by at least one of the following information: first specified information and parameter information related to the vehicle broadcast transmission signal.
- determining, according to the second designation information, the extension sequence used in the symbol extension technology may be: determining an index of the extension sequence according to the second designation information; and selecting, according to the index, the extension sequence corresponding to the index from the pre-configured extension sequence set.
- a spreading sequence used in the symbol extension technique As a spreading sequence used in the symbol extension technique. The extension sequence in the symbol extension technique is determined based on the second designation information such that the spread sequence used to generate the transmission signal is different in each transmission.
- the extended sequence in the extended sequence set is generated by a sequence point multiplication operation based on the extended sequence in the first extended sequence set and the extended sequence in the second extended sequence set, or An element at a position of a non-zero element in the extended sequence in the second extended sequence set is replaced with a first specified sequence consisting of the non-zero element and the first specified sequence of the first extended sequence set An extended sequence obtained by performing an element of a second specified sequence generated by a point multiplication operation on a sequence in which the sequence lengths are equal.
- the result of the dot multiplication of a and sequence b is (a1*b1, a2*b2, a3*b3, a4*b4).
- the Xth sequence element is multiplied by a specified value, or multiplied by a specified value, where X is an integer greater than or equal to 1 and less than or equal to the length of the extended sequence, A is an integer, and W is a real number;
- the first extended sequence set may include at least one of the following extended sequence sets:
- the extended sequence set 1 the extended sequence set 1: includes four extended sequences of length 4, wherein the first extended sequence is [1, 1, 1, 1], and the second extended sequence is [1, 1, 1i , -1i], the third spreading sequence is [1, 1i, 1, -1i], the fourth spreading sequence is [1, 1i, 1i, -1];
- the extended sequence set 2 the extended sequence set 2, includes 4 extended sequences of length 4, wherein the first spreading sequence is [1, 1, 1, -1], the second spreading sequence is [1, 1, 1i, 1i], and the third spreading sequence is [1, 1i,1,1i], the fourth spreading sequence is [1,1i,1i,1];
- the extended sequence set 3 the extended sequence set 3, comprising four extended sequences of length 4, wherein the first spreading sequence For [1,1,1,1i], the second spreading sequence is [1,1,1i,1], the third spreading sequence is [1,1i,1,1], and the fourth spreading sequence is [1,1i , 1i, -1i];
- extended sequence set 4 the extended sequence set 4, comprising
- the second extended sequence set may include at least one of the following: a Hadamard sequence set; a Walsh sequence set; a discrete Fourier transform sequence set; and a sequence containing a specified number or a specified proportion of 0 elements. a set; a unit matrix sequence set; a length of each extended sequence in the second extended sequence set is the same as a length of each extended sequence in the first extended sequence set.
- the set of extended sequences includes one or more of an extended sequence set 1 to an extended sequence set 9.
- the extended sequence set 1 includes four extended sequences of length 4, wherein the first spreading sequence is [1, 1, 1, 1], and the second spreading sequence is [1, 1, -1, -1], The third spreading sequence is [1, -1, 1, -1], and the fourth spreading sequence is [1, -1, -1, 1].
- the extended sequence set 2 contains four extended sequences of length 4.
- the first spreading sequence is [1, 1, 1, 1]
- the second spreading sequence is [1, 1i, -1, -1i]
- the third spreading sequence is [1, -1, 1, -1]
- the fourth spreading sequence is [1, -1i, -1, 1i].
- the extended sequence set 3 includes two extended sequences of length 2, wherein the first spreading sequence is [1, 1] and the second spreading sequence is [1, -1].
- the extended sequence set 4 includes one extended sequence of length 1, wherein the first spreading sequence is [1].
- the extended sequence set 5 includes six extended sequences of length 4, wherein the first spreading sequence is [1, 1, 0, 0], the second spreading sequence is [1, 0, 1, 0], and the third spreading sequence For [1,0,0,1], the fourth spreading sequence is [0,1,1,0], the fifth spreading sequence is [0,1,0,1], and the sixth spreading sequence is [0,0 , 1,1].
- the extended sequence set 6 includes four extended sequences of length 6, wherein the first spreading sequence is [1, 1, 1, 0, 0, 0], and the second spreading sequence is [1, 0, 0, 1, 1 , 0], the third spreading sequence is [0, 1, 0, 0, 1, 1], the fourth spreading sequence is [0, 0, 1, 1, 0, 1], and the extended sequence set is 7.
- the extended sequence set 7 includes four extended sequences of length 6, wherein the first spreading sequence is [1, 0, 1, 0, 1, 0], and the second spreading sequence is [1, 0, 0, 1, 0,1], the third spreading sequence is [0,1,1,0,0,1], and the fourth spreading sequence is [0,1,0,1,1,0].
- the extended sequence set 8 includes four extended sequences of length 4, wherein the first spreading sequence is [1, 0, 0, 0], the second spreading sequence is [0, 1, 0, 0], and the third spreading sequence Is [0,0,1,0], and the fourth spreading sequence is [0,0,0,1].
- the set of extended sequences can include one or more of the following extended sets:
- the extended sequence set 1 includes 16 extended sequences of length 4, wherein the first spreading sequence is [1, 1, 1, 1], and the second spreading sequence is [1, 1, -1, -1], The third spreading sequence is [1, -1, 1, -1], the fourth spreading sequence is [1, -1, -1, 1], and the fifth spreading sequence is [1, 1, 1i, -1i], The sixth spreading sequence is [1,1,-1i,1i], the seventh spreading sequence is [1,-1,1i,1i], and the eighth spreading sequence is [1,-1,-1i,-1i], The nine extended sequences are [1, 1i, 1, -1i], the tenth extended sequence is [1, 1i, -1, 1i], the eleventh extended sequence is [1, -1i, 1, 1i], and the tenth The second spreading sequence is [1,-1i,-1,-1i], the thirteenth spreading sequence is [1,1i,1i,-1], and the fourteenth spreading sequence is [1, 1i, -1i, 1], the fifteenth spreading sequence is [1, -1i, 1i, 1], and the
- the extended sequence set 2 includes 16 extended sequences of length 4, wherein the first spreading sequence is [1, 1, 1, -1], and the second spreading sequence is [1, 1, -1, 1], The third spreading sequence is [1, -1, 1, 1], the fourth spreading sequence is [1, -1, -1, -1], and the fifth spreading sequence is [1, 1, 1i, 1i], and the sixth The spreading sequence is [1,1,-1i,-1i], the seventh spreading sequence is [1,-1,1i,-1i], and the eighth spreading sequence is [1,-1,-1i,1i], The nine extended sequences are [1, 1i, 1, 1i], the tenth extended sequence is [1, 1i, -1, -1i], and the eleventh extended sequence is [1, -1i, 1, -1i], The twelve spreading sequences are [1,-1i,-1,1i], the thirteenth spreading sequence is [1,1i,1i,1], and the fourteenth spreading sequence is [1,1i,-1i,-1]. , the fifteenth extended sequence is [1, -1i, 1i, -1], and
- the extended sequence set 3 includes 16 extended sequences of length 4, wherein the first spreading sequence is [1, 1, 1, 1i], and the second spreading sequence is [1, 1, -1, -1i], The third spreading sequence is [1, -1, 1, -1i], the fourth spreading sequence is [1, -1, -1, 1i], and the fifth spreading sequence is [1, 1, 1i, 1], and the sixth The spreading sequence is [1,1,-1i,-1], the seventh spreading sequence is [1,-1,1i,-1], and the eighth spreading sequence is [1,-1,-1i,1], The nine extension sequences are [1, 1i, 1, 1], the tenth extension sequence is [1, 1i, -1, -1], and the eleventh extension sequence is [1, -1i, 1, -1], The twelve spreading sequences are [1,-1i,-1,1], the thirteenth spreading sequence is [1,1i,1i,-1i], and the fourteenth spreading sequence is [1,1i,-1i,1i] , the fifteenth extended sequence is [1, -1i, 1i], and the sixteenth
- the extended sequence set 4 includes 16 extended sequences of length 4, wherein the first spreading sequence is [1, 1, 1, -1i], and the second spreading sequence is [1, 1, -1, 1i],
- the third spreading sequence is [1, -1, 1, 1i]
- the fourth spreading sequence is [1, -1, -1, -1i]
- the fifth spreading sequence is [1, 1, 1i, -1]
- the sixth spreading sequence is [1,1,-1i,1]
- the seventh spreading sequence is [1,-1,1i,1]
- the eighth spreading sequence is [1,-1,-1i,-1]
- Nine extended sequences are [1, 1i, 1, -1], tenth extended order Listed as [1,1i,-1,1], the eleventh extended sequence is [1,-1i,1,1], and the twelfth extended sequence is [1,-1i,-1,-1],
- the thirteen extension sequence is [1, 1i, 1i, 1i]
- the fourteenth extension sequence is [1, 1i, -1i, -1i]
- the fifteenth extension sequence is
- the extended sequence set 5 includes 32 extended sequences of length 4, wherein the first spreading sequence is [1, 1, 1, 1], and the second spreading sequence is [1, 1i, -1, -1i],
- the third spreading sequence is [1, -1, 1, -1]
- the fourth spreading sequence is [1, -1i, -1, 1i]
- the fifth spreading sequence is [1, 1, 1i, -1i]
- the sixth spreading sequence is [1, 1i, -1i, -1]
- the seventh spreading sequence is [1, -1, 1i, 1i]
- the eighth spreading sequence is [1, -1i, -1i, 1]
- the nine extension sequences are [1, 1i, 1, -1i]
- the tenth extension sequence is [1, -1, -1, -1]
- the eleventh extension sequence is [1, -1i, 1, 1i].
- the twelfth spreading sequence is [1,1,-1,1], the thirteenth spreading sequence is [1,1i,1i,-1], and the fourteenth spreading sequence is [1,-1,-1i,1i ], the fifteenth spreading sequence is [1,-1i,1i,1], the sixteenth spreading sequence is [1,1,-1i,-1i], and the seventeenth spreading sequence is [1,1,1, -1], the eighteenth spreading sequence is [1, 1i, -1, 1i], the nineteenth spreading sequence is [1, -1, 1, 1], and the twentieth spreading sequence is [1, -1i, -1, -1i], the twenty-first extension sequence is [1, 1, 1i, 1i], the twenty-second expansion The sequence is [1, 1i, -1i, 1], the twenty-third extended sequence is [1, -1, 1i, -1i], and the twenty-fourth extended sequence is [1, -1i, -1i, -1 ], the twenty-fifth extension sequence is [1, 1i, 1, 1i], the twenty-sixth extension sequence is [1, -1
- the extended sequence set 6 includes 32 extended sequences of length 4, wherein the first spreading sequence is [1, 1, 1, 1i], the second spreading sequence is [1, 1i, -1, 1], and the third The spreading sequence is [1,-1,1,-1i], the fourth spreading sequence is [1,-1i,-1,-1], and the fifth spreading sequence is [1,1,1i,1], sixth The spreading sequence is [1, 1i, -1i, -1i], the seventh spreading sequence is [1, -1, 1i, -1], and the eighth spreading sequence is [1, -1i, -1i, 1i], Nine extended sequences are [1,1i,1,1], tenth extended sequence For [1,-1,-1,-1i], the eleventh extended sequence is [1,-1i,1,-1], and the twelfth extended sequence is [1,1,-1,i], The thirteenth spreading sequence is [1,1i,1i,-1i], the fourteenth spreading sequence is [1,-1,-1i,-1], and the fifteenth spreading sequence is [1,-1i,1i,i ], the sixteenth spreading sequence is [
- the extended sequence set 7 includes four extended sequences of length 4, wherein the first spreading sequence is [1, 0, 0, 0], the second spreading sequence is [0, 1, 0, 0], and the third extension The sequence is [0,0,1,0], and the fourth spreading sequence is [0,0,0,1];
- the extended sequence set 8 includes 16 extended sequences of length 6, wherein the first spreading sequence is [1, 0, 1, 0, 1, 0], and the second spreading sequence is [-1, 0, 1, 0 , -1, 0], the third spreading sequence is [1, 0, -1, 0, -1, 0], and the fourth spreading sequence is [-1, 0, -1, 0, 1, 0],
- the fifth spreading sequence is [1,0,0,1,0,1]
- the sixth spreading sequence is [-1,0,0,1,0,-1]
- the seventh spreading sequence is [1,0,0 , -1, 0, -1],
- the eighth spreading sequence is [-1, 0, 0, -1, 0, 1], and the ninth spreading sequence is [0, 1, 1, 0, 0, 1],
- the tenth spreading sequence is [0, -1, 1, 0, 0, -1], the eleventh spreading sequence is [0, 1, -1, 0, 0, -1], and the twelfth spreading sequence is [ 0, -1, -1, 0, 0, 1],
- the thirteenth spreading sequence is [0, 1, 0, 1, 1,
- the extended sequence set 9 includes 16 extended sequences of length 6, wherein the first extended sequence
- the column is [1,1,1,0,0,0]
- the second spreading sequence is [-1,1,-1,0,0]
- the third spreading sequence is [1,-1,-1 , 0,0,0]
- the fourth spreading sequence is [-1,-1,1,0,0,0]
- the fifth spreading sequence is [0,0,1,1,0]
- sixth The spreading sequence is [0,0,-1,-1,1,0]
- the seventh spreading sequence is [0,0,-1,1,-1,0]
- the eighth spreading sequence is [0,0, 1,-1,-1,0]
- the ninth extended sequence is [1,0,0,0,1,1]
- the eleventh extended sequence is [1,0,0,0,-1,-1]
- the twelfth extended sequence is [-1,0,0,0,-1,1]
- the thirteenth extended sequence Is [0,1,0,1,0,1]
- the fourteenth spreading sequence is [
- the extended sequence set 10 includes 16 extended sequences of length 6, wherein the first spreading sequence is [1, 1, 1, 1, 1, 1], and the second spreading sequence is [1, 1, 1, 1, -1, -1], the third spreading sequence is [1,1,1,-1,1,-1], and the fourth spreading sequence is [1,1,1,-1,-1,1],
- the fifth spreading sequence is [1,1,-1,1,1,-1]
- the sixth spreading sequence is [1,1,-1,1,-1,1]
- the seventh spreading sequence is [1,1 , -1, -1, 1, 1]
- the eighth spreading sequence is [1, 1, -1, -1, -1, -1]
- the ninth spreading sequence is [1, -1, 1, 1,-1]
- the tenth extended sequence is [1,-1,1,1,-1,1]
- the eleventh extended sequence is [1,-1,1,-1,1,1]
- the twelve extended sequences are [1,-1,1,-1,-1], and the thirteenth extended sequence is [1,-1,-1,1,1,1], the fourteenth extended sequence For [1,-1,-1,1,-1,-1
- the foregoing second designated information may be an index information, but is not limited thereto.
- the first specified information may include at least one of the following: the vehicle condition information, the operation information of the driver, the information sensed by the vehicle sensor, and the control signaling; wherein the vehicle condition information may include at least one of the following: The vehicle identification, the current geographic location of the vehicle, the traveling speed of the vehicle, the size of the vehicle, the color of the vehicle; the operational information may include at least one of: a driver's ongoing operation on the vehicle, the driver preparing for the traffic The operation of the tool.
- the size of the vehicle may include parameters such as the size, length, width, and several rounds of the vehicle, such as the volume of the vehicle.
- the driver's ongoing operation on the vehicle may include at least one of braking, starting, accelerating, lane changing, and steering; the driver's preparation for the vehicle may include at least one of the following: preparing for braking , ready to start, ready to accelerate, ready to change lanes and ready to turn.
- the system parameter information related to the vehicle broadcast transmission signal may include at least one of the following: a system frame number of the vehicle broadcast transmission signal; the vehicle broadcast Frequency domain location information of the transmitted signal.
- the parameter information is known by other receivers of the vehicle that receives the transmission signal, so that the randomness of the extended sequence can be increased, and the problem that the two vehicles are transmitted multiple times using the same sequence extension can be avoided. Improve reliability.
- the method may further include: determining a sub-resource pool on the second time-frequency resource for transmitting the third specified information; wherein the sub-resource pool is for the second time-frequency The resource is divided by orthogonal division; the third designated information is transmitted on the determined sub-resource pool.
- orthogonal division manner may include at least one of the following: frequency domain division, time domain division, time-frequency domain division, and code domain division, but is not limited thereto.
- the divided sub-resource pools can be orthogonal between each other.
- guard interval there may be a certain guard interval between the first time-frequency resource and the second time-frequency resource, and there may be no guard interval, and the present invention is not limited thereto.
- the third designated information is part of the first designated information, for example, may be information with a higher priority in the first designated information, such as the current geographic location of the vehicle, brakes, lane change, etc., but not Limited to this. That is, the third specified information may be some key information in the first designated information, and the transmission may be simplified by transmitting the key information once.
- the process of blind detection is performed to the vehicle that transmits the signal described above, and the reliability of the blind inspection can be provided.
- the third designation information may be part information of the first designation information and information generated by the first designation information, but is not limited thereto.
- step S202 the execution order of the orthogonal resource pool for determining the third designated information may be performed before step S202, or after step S202, or simultaneously with step S202, but is not limited thereto.
- a parameter used in a carrier modulation technique applied before broadcasting the transmission signal on the first time-frequency resource and a carrier modulation technology applied before transmitting the third designated information on the sub-resource pool The parameters used in the same are the same or different.
- the foregoing parameters may include: a subcarrier spacing and a cyclic prefix (CP) length.
- CP cyclic prefix
- determining the sub-resource pool on the second time-frequency resource for transmitting the third specified information may be performed by: determining an index of the sub-resource pool according to the fourth designation information; and using the second time-frequency resource
- the sub-resource pool of the index is the determined sub-resource pool of the index as the sub-resource pool for transmitting the third designation information; wherein the fourth designation information is part or all of the information of the second designation information;
- the second designation information is used to determine the spreading sequence used in the symbol extension technique.
- the fourth indication information may be an index, but is not limited thereto.
- pilot signal may further include a pilot symbol, but is not limited thereto.
- pilot symbol may be used by the vehicle that receives the transmission number to demodulate the first designated information, but is not limited thereto.
- carrier modulation may be performed before or after the above step S202, but is not limited thereto.
- the execution body of the above steps may be a vehicle, such as a car, a bicycle, an electric car, a scooter, a ship, an airplane, a rail train, etc., but is not limited thereto.
- the method according to the above embodiment can be implemented by means of software plus a necessary general hardware platform, and of course, by hardware, but in many cases, the former is A better implementation.
- the technical solution of the present invention which is essential or contributes to the prior art, may be embodied in the form of a software product stored in a storage medium (such as ROM/RAM, disk,
- the optical disc includes a number of instructions for causing a terminal device (which may be a cell phone, a computer, a server, or a network device, etc.) to perform the methods described in various embodiments of the present invention.
- FIG. 3 is a schematic flowchart of an information extraction method according to an embodiment of the present invention.
- the above methods include:
- Step S302 receiving a transmission signal broadcasted by each vehicle in the vehicle network; wherein the transmission signal is a transmission signal generated by the symbol extension technology of the first specified information of the vehicle;
- Step S304 extracting first designation information of each vehicle from the received transmission signal.
- the received transmission symbol is the transmission signal generated by the symbol extension technique by the first designated information of the vehicle, that is, the first designated information is extended by the symbol extension technology, and may be in the case of collision aliasing.
- the receiving end demodulates the first designated information of each vehicle, so that it is possible to solve the problem that it is difficult to demodulate the information after the collision of the signals between the vehicles in the vehicle networking system in the related art, thereby reducing the delay of the vehicle networking communication. And can support more inter-vehicle communication with the same time-frequency resources.
- the step S304 may include detecting the broadcast signal by using a multi-user detection technique, and correctly demodulating the first designation information by using a spreading sequence or the like that generates different transmission signals.
- the first designated information may also be demodulated by using information such as a spreading sequence, a signal strength, a transmission delay, and the like that generate different transmission signals.
- the multi-user detection technology is a multi-user detection technique based on code block level interference cancellation, and generally requires a certain blind detection and blind channel estimation method.
- the signal after channel equalization is sent to demodulation and decoding.
- the decoded code block is re-encoded, the channel value is weighted, then eliminated from the aliased signal, and then returned to the first step for the next round.
- the first step of "picking" can be based on the reference signal, or on the statistics of the signal itself. Because you don't know which users arrive before, you naturally don't know which reference signals arrive, so even if you choose according to the reference signal, it is also a A blind detection process. If you choose by the statistics of the signal itself, it is more blind detection.
- the second step of equalization can be based on the reference signal or on the symbolic properties of the signal itself. Equalization requires prior channel estimation, and channel estimation by the symbol property of the signal itself is generally considered to be a blind channel estimation method.
- all equalized symbol streams can be sent to demodulation and decoding, and further screening can be used to select the best streams from all equalized symbol streams, that is, the highest signal to noise ratio.
- the streams are demodulated and decoded.
- the fourth step involves weighting the channel value. This channel value can be re-estimated by decoding the correct data to obtain a more accurate channel estimate.
- This method of first selecting the stream de-equalization demodulation decoding that is most likely to be translated can greatly reduce the decoding complexity and ensure performance.
- This method can make full use of the code domain discrimination of the extended technology, not The same signal flow has strong and weak power domain discrimination, and the spatial domain discrimination of multiple receiving antennas to do multi-user separation.
- V2V vehicle network
- the vehicle does not know. There are many vehicles around, and there is no known extension sequence and orthogonal resource pool used by each vehicle. Therefore, the vehicle can be detected by a blind measurement method.
- the first specified information of each vehicle can be extracted from the received transmission signal by at least one of the following: based on serial interference cancellation. Multi-user blind detection method; multi-user blind detection method based on parallel interference cancellation; multi-user blind detection method based on mixed interference cancellation.
- the first specified information may include at least one of the following: the vehicle condition information, the operation information of the driver, the information sensed by the vehicle sensor, and the control signaling; wherein the vehicle condition information may include at least one of the following: The vehicle identification, the current geographic location of the vehicle, the traveling speed of the vehicle, the size of the vehicle, the color of the vehicle; the operational information may include at least one of: a driver's ongoing operation on the vehicle, the driver preparing for the traffic The operation of the tool.
- the above sensor may include various sensors, such as an image sensor, but is not limited thereto.
- an image sensor For example, if a large truck blocks the rear car, the big truck transmits the image taken by the camera to the following car, which is an image sensor. Perceived information, but not limited to this.
- the driver's ongoing operation on the vehicle may include at least one of braking, starting, accelerating, lane changing, and steering; the driver's preparation for the vehicle may include at least one of the following: preparing for braking , ready to start, ready to accelerate, ready to change lanes and ready to turn.
- the extension sequence used in the above symbol extension technology is determined by the second designation information, wherein the second designation information is generated by at least one of the following: the first designation information and the system parameter related to the vehicle broadcast transmission signal. information. Specifically how to specify information based on the second The determined spreading sequence can be referred to the description in Embodiment 1, and the description of the extended sequence set used in determining the extended sequence is also referred to in the description in Embodiment 1, and details are not described herein again.
- the foregoing second designated information may be an index information, but is not limited thereto.
- the system parameter information related to the vehicle broadcast transmission signal may include at least one of the following: a system frame number of the vehicle broadcast transmission signal; The vehicle broadcasts frequency domain location information of the transmission signal.
- the parameter information is known by other receivers of the vehicle that receives the transmission signal, so that the randomness of the extended sequence can be increased, and the problem that the two vehicles are transmitted multiple times using the same sequence extension can be avoided. Improve reliability.
- the method further includes: receiving third designated information transmitted by the respective vehicles; wherein the third designated information is partial information of the first designated information.
- the transmission signal broadcasted by each vehicle in the receiving car network may be expressed as: receiving the transmission signal on the first time-frequency resource; and receiving the third specified information transmitted by the respective vehicles includes: And receiving, by the sub-resource pool on the time-frequency resource, the third specified information, where the sub-resource pool is obtained by dividing the second time-frequency resource by orthogonal division.
- orthogonal division manner may include at least one of the following: frequency domain division, time domain division, time-frequency domain division, and code domain division, but is not limited thereto.
- the divided sub-resource pools can be orthogonal between each other.
- guard interval there may be a certain guard interval between the first time-frequency resource and the second time-frequency resource, and there may be no guard interval, and the present invention is not limited thereto.
- the third designated information is part of the first specified information, for example, may be information with a higher priority in the first designated information, such as the current geographic location of the vehicle, the brake, Information such as lane change, but is not limited to this. That is, the third specified information may be some key information in the first designated information.
- the third designation information may be part information of the first designation information and information generated by the first designation information, but is not limited thereto.
- the orthogonal resource pool is determined by the fourth designation information; wherein the fourth designated information is part or all of the information of the second designated information.
- the fourth indication information may be an index, but is not limited thereto.
- the pilot signal may further include a pilot symbol, but is not limited thereto.
- the pilot symbol can be used for demodulating the first specified information by the vehicle receiving the transmission number, but is not limited thereto.
- the execution body of the above steps may be a vehicle, such as a car, a bicycle, an electric car, a scooter, a ship, an airplane, a rail train, etc., but is not limited thereto.
- a signal transmitting device is also provided, which is used to implement the above-mentioned embodiments and preferred embodiments, and has not been described again.
- the term “module” may implement a combination of software and/or hardware of a predetermined function.
- the apparatus described in the following embodiments is preferably implemented in software, hardware, or a combination of software and hardware, is also possible and contemplated.
- FIG. 4 is a structural block diagram of a signal transmitting apparatus according to an embodiment of the present invention. As shown in FIG. 4, the apparatus includes:
- a generating module 42 configured to generate a transmission signal by using a symbol extension technology of the first specified information of the vehicle; the generating module 42 may correspond to the processor and may be used for information processing;
- the broadcast module 44 is coupled to the generation module 42 and configured to broadcast the generated transmission signal on a designated transmission channel or first time-frequency resource of the vehicle network in which the vehicle is located.
- the broadcast module 44 can correspond to The transmitting antenna can be used for broadcasting information.
- the first designated information is extended by the symbol extension technology, so that it is possible to demodulate the information of each vehicle for the receiving end in the case of collision aliasing, and therefore, the related art in the vehicle networking can be solved.
- the signal between vehicles in the system is difficult to demodulate information after collision and aliasing, thereby reducing the delay of the vehicle networking communication and supporting more inter-vehicle communication with the same time-frequency resources.
- the apparatus may further include: a first determining module, coupled to the generating module 42, configured to determine a spreading sequence used in the symbol extension technology according to the second designation information; wherein the second designation
- the information is generated by at least one of the following information: first specified information and system parameter information related to the vehicle broadcast transmission signal.
- the foregoing first determining module may be further configured to: determine an index of the extended sequence according to the second specified information; and select, according to the index, the extended sequence corresponding to the index from the pre-configured extended sequence set, as used in the symbol extension technology.
- Extended sequence The extension sequence in the symbol extension technique is determined based on the second designation information such that the spread sequence used to generate the transmission signal is different in each transmission.
- the foregoing second designated information may be an index information, but is not limited thereto.
- the first specified information may include at least one of the following: the vehicle condition information, the operation information of the driver, the information sensed by the vehicle sensor, and the control signaling; wherein the vehicle condition information may include at least one of the following: Vehicle identification, current geographic location of the vehicle The location, the speed of the vehicle, the size of the vehicle, the color of the vehicle; the operational information may include at least one of: an ongoing operation by the driver on the vehicle, and an operation the driver is prepared to perform on the vehicle.
- the driver's ongoing operation on the vehicle may include at least one of braking, starting, accelerating, lane changing, and steering; the driver's preparation for the vehicle may include at least one of the following: preparing for braking , ready to start, ready to accelerate, ready to change lanes and ready to turn.
- the system parameter information related to the vehicle broadcast transmission signal may include at least one of the following: a system frame number of the vehicle broadcast transmission signal; the vehicle broadcast Frequency domain location information of the transmitted signal.
- the parameter information is known by other receivers of the vehicle that receives the transmission signal, so that the randomness of the extended sequence can be increased, and the problem that the two vehicles are transmitted multiple times using the same sequence extension can be avoided. Improve reliability.
- the apparatus may further include: a second determining module, coupled to the broadcast module 44, configured to determine a sub-resource pool on the second time-frequency resource for transmitting the third designated information;
- the sub-resource pool is obtained by dividing the second time-frequency resource by orthogonal division; the broadcast module is further configured to transmit the third designation information on the determined sub-resource pool.
- orthogonal division manner may include at least one of the following: frequency domain division, time domain division, time-frequency domain division, and code domain division, but is not limited thereto.
- the divided sub-resource pools can be orthogonal between each other.
- guard interval there may be a certain guard interval between the first time-frequency resource and the second time-frequency resource, and there may be no guard interval, and the present invention is not limited thereto.
- the third designated information is part of the first specified information, for example, may be information with a higher priority in the first designated information, such as the current geographic location of the vehicle, the brake, Information such as lane change, but is not limited to this. That is, the third specified information may be some key information in the first designated information.
- the third designation information may be part information of the first designation information and information generated by the first designation information, but is not limited thereto.
- a parameter used in a carrier modulation technique applied before broadcasting the transmission signal on the first time-frequency resource and a carrier modulation technology applied before transmitting the third designated information on the sub-resource pool The parameters used in the same are the same or different.
- the foregoing parameters may include: a subcarrier spacing and a cyclic prefix CP length.
- the foregoing second determining module is further configured to determine an index of the sub-resource pool according to the fourth designation information; and use an index of the sub-resource pool on the second time-frequency resource as a determined sub-index of the sub-resource a resource pool as a sub-resource pool for transmitting the third designation information; wherein the fourth designation information is part or all of the information of the second designation information; wherein the second designation information is used to determine a symbol extension technology Extended sequence.
- the fourth indication information may be an index, but is not limited thereto.
- pilot signal may further include a pilot symbol, but is not limited thereto. It should be noted that the pilot symbol may be used by the vehicle that receives the transmission number to demodulate the first designated information, but is not limited thereto.
- the above device may be located in a vehicle, such as a car, a bicycle, an electric car, a scooter, a ship, an airplane, a rail train, etc., but is not limited thereto.
- each of the above modules may be implemented by software or hardware.
- the foregoing may be implemented by, but not limited to, the foregoing modules are all located in the same processor; or, the above modules are in any combination.
- the forms are located in different processors.
- an information extraction device is further provided, which is used to implement the above implementation.
- the term “module” may implement a combination of software and/or hardware of a predetermined function.
- the apparatus described in the following embodiments is preferably implemented in software, hardware, or a combination of software and hardware, is also possible and contemplated.
- FIG. 5 is a structural block diagram of an information extracting apparatus according to an embodiment of the present invention. As shown in FIG. 5, the apparatus includes:
- the receiving module 52 is configured to receive a transmission signal broadcast by each vehicle in the vehicle network; wherein the transmission signal is a transmission signal generated by the symbol extension technology of the first specified information of the vehicle; and the receiving module 52 may correspond to the receiving antenna. Can receive wireless signals transmitted by other devices, etc.;
- the extraction module 54 is coupled to the receiving module 52 and configured to extract first designation information of each vehicle from the received transmission signal.
- the extracting module 54 may correspond to a demodulator or a processor having a demodulation function, a processing chip or a processing circuit, etc., and may extract the first specified information from the received transmission signal.
- the received transmission symbol is the transmission signal generated by the symbol extension technique by the first designated information of the vehicle, that is, the first designated information is extended by the symbol extension technology, and may be in the case of collision aliasing.
- the receiving end demodulates the first designated information of each vehicle, so that it is possible to solve the problem that it is difficult to demodulate the information after the collision of the signals between the vehicles in the vehicle networking system in the related art, thereby reducing the delay of the vehicle networking communication. And can support more inter-vehicle communication with the same time-frequency resources.
- the extraction module 54 can pass the following At least one of the methods extracts first specified information of each vehicle from the received transmission signal: a multi-user blind detection method based on serial interference cancellation; a multi-user blind detection method based on parallel interference cancellation; User blind detection method.
- the first specified information may include at least one of the following: the vehicle condition information, the operation information of the driver, the information sensed by the vehicle sensor, and the control signaling; wherein the vehicle condition information may include at least one of the following: The vehicle identification, the current geographic location of the vehicle, the traveling speed of the vehicle, the size of the vehicle, the color of the vehicle; the operational information may include at least one of: a driver's ongoing operation on the vehicle, the driver preparing for the traffic The operation of the tool.
- the above sensor may include various sensors, such as an image sensor, but is not limited thereto.
- an image sensor For example, if a large truck blocks the rear car, the big truck transmits the image taken by the camera to the following car, which is an image sensor. Perceived information, but not limited to this.
- the driver's ongoing operation on the vehicle may include at least one of braking, starting, accelerating, lane changing, and steering; the driver's preparation for the vehicle may include at least one of the following: preparing for braking , ready to start, ready to accelerate, ready to change lanes and ready to turn.
- the extension sequence used in the above symbol extension technology is determined by the second designation information, wherein the second designation information is generated by at least one of the following: the first designation information and the system parameter related to the vehicle broadcast transmission signal. information.
- the second designation information is generated by at least one of the following: the first designation information and the system parameter related to the vehicle broadcast transmission signal. information.
- the foregoing second designated information may be an index information, but is not limited thereto.
- the system parameter information related to the vehicle broadcast transmission signal may include at least one of the following: the vehicle broadcast transmission a system frame number of the transmitted signal; the vehicle broadcasting frequency domain location information of the transmitted signal.
- the parameter information is known by other receivers of the vehicle that receives the transmission signal, so that the randomness of the extended sequence can be increased, and the problem that the two vehicles are transmitted multiple times using the same sequence extension can be avoided. Improve reliability.
- the receiving module 52 may be further configured to receive third designated information transmitted by the respective vehicles.
- the third designated information is part of the first designated information, for example, may be information with a higher priority in the first designated information, such as the current geographic location of the vehicle, brakes, lane change, etc., but not Limited to this. That is, the third specified information may be some key information in the first designated information.
- the third designation information may be part information of the first designation information and information generated by the first designation information, but is not limited thereto.
- the receiving module 52 may be further configured to receive the transmission signal on a first time-frequency resource, and receive the third specified information on a sub-resource pool on a second time-frequency resource;
- the resource pool is obtained by dividing the second time-frequency resource by orthogonal division.
- orthogonal division manner may include at least one of the following: frequency domain division, time domain division, time-frequency domain division, and code domain division, but is not limited thereto.
- the divided sub-resource pools can be orthogonal between each other.
- guard interval there may be a certain guard interval between the first time-frequency resource and the second time-frequency resource, and there may be no guard interval, and the present invention is not limited thereto.
- the orthogonal resource pool is determined by the fourth designation information; wherein the fourth designated information is part or all of the information of the second designated information.
- the fourth indication information may be an index, but is not limited thereto.
- the pilot signal may further include a pilot symbol, but is not limited thereto.
- the pilot symbol can be used for demodulating the first specified information by the vehicle receiving the transmission number, but is not limited thereto.
- the above device may be located in a vehicle, such as a car, a bicycle, an electric car, a scooter, a ship, an airplane, a rail train, etc., but is not limited thereto.
- each of the above modules may be implemented by software or hardware.
- the following technologies may be implemented, but are not limited thereto: the foregoing modules are all located in the same processor; or, the above modules are combined in any combination.
- the forms are located in different processors.
- FIG. 6 is a structural block diagram of a transmitter according to an embodiment of the present invention. As shown in FIG. 6, the method includes:
- a generator 62 configured to generate a transmission signal by using a symbol extension technology by the first specified information of the vehicle
- the radio frequency module 64 coupled to the generator 62, is configured to broadcast the generated transmission signal on a designated transmission channel or first time-frequency resource of the vehicle network in which the vehicle is located.
- the first designated information is extended by the symbol extension technology, so that it is possible to demodulate the information of each vehicle for the receiving end in the case of collision aliasing, and therefore, the related technology can be solved.
- the signals between vehicles are difficult to demodulate information after collision and aliasing, thereby reducing the delay of the vehicle networking communication and supporting more inter-vehicle communication with the same time-frequency resources.
- the transmitter further includes: a first processor, coupled to the generator 62, configured to determine, according to the second designation information, a spreading sequence used in the symbol extension technology; wherein the second designation
- the information is generated by at least one of the following information: first specified information and system parameter information related to the vehicle broadcast transmission signal.
- the first processor is further configured to determine an index of the extended sequence according to the second specified information; and select, according to the index, the extended sequence corresponding to the index from the preset set of extended sequences.
- An extended sequence used in the symbol extension technique is further configured to determine an index of the extended sequence according to the second specified information; and select, according to the index, the extended sequence corresponding to the index from the preset set of extended sequences.
- the foregoing first processor may be further configured to determine an index of the extended sequence according to the second designation information, and select, according to the index, the extended sequence corresponding to the index from the pre-configured extended sequence set, as used in the symbol extension technology.
- Extended sequence The extension sequence in the symbol extension technique is determined based on the second designation information such that the spread sequence used to generate the transmission signal is different in each transmission.
- the foregoing second designated information may be an index information, but is not limited thereto.
- the first specified information may include at least one of the following: the vehicle condition information, the operation information of the driver, the information sensed by the vehicle sensor, and the control signaling; wherein the vehicle condition information may include at least one of the following: The vehicle identification, the current geographic location of the vehicle, the traveling speed of the vehicle, the size of the vehicle, the color of the vehicle; the operational information may include at least one of: a driver's ongoing operation on the vehicle, the driver preparing for the traffic The operation of the tool.
- the driver's ongoing operation on the vehicle may include at least one of braking, starting, accelerating, lane changing, and steering; the driver's preparation for the vehicle may include at least one of the following: preparing for braking , ready to start, ready to accelerate, ready to change lanes and ready to turn.
- the system parameter information related to the vehicle broadcast transmission signal may include at least one of the following: the vehicle broadcast transmission a system frame number of the transmitted signal; the vehicle broadcasting frequency domain location information of the transmitted signal.
- the parameter information is known by other receivers of the vehicle that receives the transmission signal, so that the randomness of the extended sequence can be increased, and the problem that the two vehicles are transmitted multiple times using the same sequence extension can be avoided. Improve reliability.
- the transmitter may further include: a second processor, connected to the radio frequency module 64, configured to determine a sub-resource pool on the second time-frequency resource for transmitting the third designated information;
- the sub-resource pool is obtained by dividing the second time-frequency resource by orthogonal division; the radio frequency module 64 is further configured to transmit the third designation information on the determined sub-resource pool.
- orthogonal division manner may include at least one of the following: frequency domain division, time domain division, time-frequency domain division, and code domain division, but is not limited thereto.
- the divided sub-resource pools can be orthogonal between each other.
- guard interval there may be a certain guard interval between the first time-frequency resource and the second time-frequency resource, and there may be no guard interval, and the present invention is not limited thereto.
- the third designated information is part of the first designated information, for example, may be information with a higher priority in the first designated information, such as the current geographic location of the vehicle, brakes, lane change, etc., but not Limited to this. That is, the third specified information may be some key information in the first designated information. By transmitting the key information once, the process of blindly checking the vehicle receiving the transmitted signal may be simplified, and the blind detection may be provided. Reliability. It should be noted that the third designation information may be part information of the first designation information and information generated by the first designation information, but is not limited thereto.
- a parameter used in a carrier modulation technique applied before broadcasting the transmission signal on the first time-frequency resource and a carrier modulation technology applied before transmitting the third designated information on the sub-resource pool The parameters used in the same are the same or different.
- the foregoing parameters may include: a subcarrier spacing and a cyclic prefix CP length.
- the foregoing second processor may be further configured to determine an index of the sub-resource pool according to the fourth designation information, and set an index of the sub-resource pool on the second time-frequency resource to the determined index.
- a sub-resource pool as a sub-resource pool for transmitting the third designation information; wherein the fourth designation information is part or all of the information of the second designation information; wherein the second designation information is used to determine the symbol extension technology Extended sequence.
- the fourth indication information may be an index, but is not limited thereto.
- the foregoing transmission signal may further include a pilot symbol, but is not limited thereto.
- the pilot symbol may be used by a vehicle that receives the transmission number to demodulate the first designated information. , but not limited to this. .
- first processor and the second processor may be the same processor or different processors, but are not limited thereto.
- the above transmitter may be located in a vehicle, such as a car, a bicycle, an electric car, a scooter, a ship, an airplane, a rail train, etc., but is not limited thereto.
- FIG. 7 is a structural block diagram of a receiver according to an embodiment of the present invention. As shown in FIG. include:
- the transmitting device 72 is configured to receive a transmission signal broadcasted by each vehicle in the vehicle network; wherein the transmission signal is a transmission signal generated by the symbol extension technology of the first specified information of the vehicle;
- the processor 74 is coupled to the transmission device 72 and configured to extract first designation information for each vehicle from the received transmission signal.
- the transmitting device 72 can at least include: a transmitting and receiving antenna, and can receive a wireless signal sent by other devices.
- the received transmission symbol is the first designated information of the vehicle
- the transmission signal generated by the symbol extension technology that is, the first designated information is extended by the symbol extension technology, can demodulate the first designated information of each vehicle for the receiving end in the case of collision aliasing, and thus can be solved.
- the problem that the signals between the vehicles in the vehicle networking system are difficult to demodulate after collision and aliasing can reduce the delay of the vehicle networking communication, and can support more inter-vehicle communication with the same time-frequency resources.
- the vehicle since there is no central controller to notify the current network information of the vehicle network (V2V), and there is no central controller to arrange or coordinate the extended sequence or orthogonal resource pool used by each vehicle, the vehicle does not know. There are many vehicles around, and there is no known extension sequence and orthogonal resource pool used by each vehicle. Therefore, the vehicle may be detected by a blind measurement method.
- the processor 74 may extract the first specified information of each vehicle from the received transmission signal by using at least one of the following technologies: Multi-user blind detection method for line interference cancellation; multi-user blind detection method based on parallel interference cancellation; multi-user blind detection method based on mixed interference cancellation.
- the first specified information may include at least one of the following: the vehicle condition information, the operation information of the driver, the information sensed by the vehicle sensor, and the control signaling; wherein the vehicle condition information may include at least one of the following: The vehicle identification, the current geographic location of the vehicle, the traveling speed of the vehicle, the size of the vehicle, the color of the vehicle; the operational information may include at least one of: a driver's ongoing operation on the vehicle, the driver preparing for the traffic The operation of the tool.
- the above sensor may include various sensors, such as an image sensor, but is not limited thereto.
- an image sensor For example, if a large truck blocks the rear car, the big truck transmits the image taken by the camera to the following car, which is an image sensor. Perceived information, but not limited to this.
- the driver's ongoing operation on the vehicle may include at least one of braking, starting, accelerating, lane changing, and steering; the driver's preparation for the vehicle may include at least one of the following: preparing for braking , ready to start, ready to accelerate, ready to change lanes and Ready to turn.
- the extension sequence used in the above symbol extension technology is determined by the second designation information, wherein the second designation information is generated by at least one of the following: the first designation information and the system parameter related to the vehicle broadcast transmission signal. information.
- the second designation information is generated by at least one of the following: the first designation information and the system parameter related to the vehicle broadcast transmission signal. information.
- the foregoing second designated information may be an index information, but is not limited thereto.
- the system parameter information related to the vehicle broadcast transmission signal may include at least one of the following: a system frame number of the vehicle broadcast transmission signal; the vehicle broadcast Frequency domain location information of the transmitted signal.
- the parameter information is known by other receivers of the vehicle that receives the transmission signal, so that the randomness of the extended sequence can be increased, and the problem that the two vehicles are transmitted multiple times using the same sequence extension can be avoided. Improve reliability.
- the transmitting device 72 may be further configured to receive the third specified information transmitted by the respective vehicles.
- the third designated information is part of the first designated information, for example, may be information with a higher priority in the first designated information, such as the current geographic location of the vehicle, brakes, lane change, etc., but not Limited to this. That is, the third specified information may be some key information in the first designated information. By transmitting the key information once, the process of blindly checking the vehicle receiving the transmitted signal may be simplified, and the blind detection may be provided. Reliability.
- the third designation information may be part information of the first designation information and information generated by the first designation information, but is not limited thereto.
- the foregoing transmission module 72 may be further configured to receive the transmission signal on a first time-frequency resource, and receive the third specified information on a sub-resource pool on a second time-frequency resource;
- the sub-resource pool is obtained by dividing the second time-frequency resource by orthogonal division.
- orthogonal division manner may include at least one of the following: frequency domain division, time domain division, time-frequency domain division, and code domain division, but is not limited thereto.
- the divided sub-resource pools can be orthogonal between each other.
- guard interval there may be a certain guard interval between the first time-frequency resource and the second time-frequency resource, and there may be no guard interval, and the present invention is not limited thereto.
- the orthogonal resource pool is determined by the fourth designation information; wherein the fourth designated information is part or all of the information of the second designated information.
- the fourth indication information may be an index, but is not limited thereto.
- the pilot signal may further include a pilot symbol, but is not limited thereto.
- the pilot symbol can be used for demodulating the first specified information by the vehicle receiving the transmission number, but is not limited thereto.
- the above receiver may be located in a vehicle, such as a car, a bicycle, an electric car, a scooter, a ship, an airplane, a rail train, etc., but is not limited thereto.
- An embodiment of the present invention further provides a vehicle, including: the above transmitter and the receiver.
- Embodiments of the present invention also provide a storage medium.
- the foregoing storage medium stores computer executable code, such as a computer program, and after the computer executable code is executed, the signal sending method or information extraction provided by the foregoing one or more technical solutions can be implemented. method.
- the computer storage medium can be any type of storage medium, optionally a non-transitory storage medium.
- the storage medium may be arranged to store program code for performing the steps of Embodiment 1 or Embodiment 2.
- the foregoing storage medium may include, but is not limited to: a USB flash drive, only A medium that can store program code, such as a read-only memory (ROM), a random access memory (RAM), a removable hard disk, a magnetic disk, or an optical disk.
- ROM read-only memory
- RAM random access memory
- removable hard disk such as a hard disk, a magnetic disk, or an optical disk.
- the processor performs the steps of the method in Embodiment 1 or Embodiment 2 according to the stored program code in the storage medium.
- the processor executes according to the stored program code in the storage medium.
- An alternative embodiment of the present invention provides a communication method based on a symbol extension technique and a blind detection reception technique, wherein the sequence extension process in the symbol extension technique is as follows: the transmitter uses a certain length of the extension sequence (eg, a length of N)
- the extended sequence means that the extended sequence is composed of N symbols, and can also be said to be composed of N elements, where N symbols/N elements can be L digital symbols) to spread the modulated data symbols.
- the extension process refers to the process of multiplying each modulated data symbol by each symbol of the extended sequence to finally form a sequence of symbols having the same length as the extended sequence used, and
- FIG. 8 is a symbol extension provided by an alternative embodiment of the present invention.
- Sk which may be a constellation point symbol modulated by BPSK/QAM, or a symbol modulated by an OFDM carrier
- N-length extended sequence C ⁇ c1, c2,... ...cN ⁇
- FIG. 9 is a schematic diagram of a scenario provided according to an alternative embodiment of the present invention.
- Each vehicle carries a "transceiver" (after synchronization through other means), and will have its own information. After being extended by the extension technology, it broadcasts on a specific time-frequency resource, and at the same time, receives and demodulates the broadcast information of the surrounding vehicle at a specific time-frequency resource, and uses the information to assist driving (manual driving or automatic driving), the following vehicle Give an example for explanation.
- FIG. 10 is a schematic flowchart diagram of an information generating and transmitting method according to an alternative embodiment of the present invention.
- the vehicle information S (corresponding to the first designated information in the foregoing embodiment) is extended by symbols.
- the transmission signal is generated and broadcast on a specific transmission channel or a specific time-frequency resource.
- the specific transport channel or the specific time-frequency resource may be the first time-frequency resource region shown in FIG. 10 (corresponding to the designated transport channel or the available time-frequency resource of the vehicle network where the vehicle is located in the foregoing embodiment). ).
- the in-vehicle transmitter includes an extension process in the process of generating the broadcast signal from the vehicle information S, and the extension sequence used for the extension is determined by the Sc information (corresponding to the second designation information in the above embodiment). And Sc is generated by the vehicle information S; or is generated by the vehicle information S and the system parameter information T related to the current transmission.
- the partial information S2 in the information S transmitted this time is in a second time-frequency resource region including a plurality of orthogonal sub-resource pools (corresponding to the above)
- the time-frequency resource corresponding to the determined orthogonal resource pool is transmitted, and which sub-orthogonal resource pool, that is, the index of the orthogonal resource pool, is determined by the information Sc that determines the extended sequence.
- vehicle information includes vehicle condition information and/or driver operation information
- the above vehicle condition information includes one or more information in the information set of ⁇ a license plate, vehicle current geographical location, speed, size, color ⁇ .
- the driver operation information includes a current operation and/or a prediction operation, and the current operation includes one or more information in a ⁇ brake, acceleration, lane change, steering ⁇ information set, and the prediction operation includes ⁇ preparation brake The car, ready to accelerate, ready to change lanes, ready to turn to one or more pieces of information in the information set.
- system information related to this transmission must be known by the receiver in other vehicles, such as the frame number or system frame number (SFN) of the current transmission, so that the extended sequence can be added.
- SFN system frame number
- the above extended sequence is usually taken from a set of extended sequences, and the index value Index of the used extended sequence in the set is determined by the Sc information. Which sub-orthogonal resource pool (index Index2 of the orthogonal resource pool) is selected is also determined by the information Sc that determines the above-described spreading sequence.
- extension and the carrier modulation may be interchanged one after another.
- FIG. 11 is a diagram showing a method of generating and transmitting information after applying a data preamble scheme.
- the in-vehicle receiver receives a broadcast signal of a surrounding vehicle (vehicle) in a specific broadcast transmission channel, extracts vehicle information of each vehicle through an advanced multi-user detection method, and applies the vehicle information to assist driving (manual driving or automatic driving).
- the car receiver Since there is no central controller to inform the current car network (V2V) network information, and there is no central controller to arrange or coordinate the extended sequence or orthogonal sub-pool used by each vehicle, the car receiver does not know how many around it. The car does not know the extended sequence and orthogonal sub-pools used by each car. Therefore, the vehicle receiver needs to apply an advanced signal detection method, and a multi-user detection method based on serial interference cancellation can usually be applied.
- each iteration needs to have a process of "traversing" all the extended sequences of the extended sequence set and traversing all orthogonal sub-pools to find out which vehicles with the strongest signal in the current iteration. . Then demodulate the current front vehicle information, Using the vehicle information to obtain the accurate extended sequence information and the orthogonal sub-pool sub-information, the broadcast information of the vehicle can be further reconstructed, and then the reconstructed broadcast information is used as a known signal for channel estimation. The resulting channel is then weighted. Finally, the broadcast information after the weighted channel is subtracted from the received broadcast signal. Then go to the next iteration.
- the in-vehicle receiver receives a broadcast signal of a surrounding vehicle (vehicle) in a specific broadcast transmission channel, extracts vehicle information of each vehicle through an advanced multi-user detection method, and applies the vehicle information to assist driving (manual driving or automatic driving).
- the car receiver Since there is no central controller to inform the current car network (V2V) network information, and there is no central controller to arrange or coordinate the extension sequence used by each vehicle, the car receiver does not know how many cars are around, and does not know The extended sequence used by each car. Therefore, the vehicle receiver needs to be able to apply a multi-user detection method based on serial interference cancellation to extract the first specified information.
- V2V current car network
- each iteration needs to have a "traversal" of all the extended sequence processes of the extended sequence set to find out which vehicles of the current iteration have the strongest information. Then, the current front vehicle information is demodulated, and the vehicle information is used to accurately expand the sequence information, and the broadcast information of the vehicle can be further reconstructed, and then the reconstructed broadcast information is used as a known signal for channel estimation. The resulting channel is then weighted. Finally, the broadcast information after the weighted channel is subtracted from the received broadcast signal. Then go to the next iteration.
- the extended sequence, vehicle information and other information used are as shown in Table 2.
- the extended sequence, vehicle information and other information used are as shown in Table 3.
- the in-vehicle receiver receives a broadcast signal of a surrounding vehicle (vehicle) in a specific broadcast transmission channel, extracts vehicle information of each vehicle through an advanced multi-user detection method, and applies the vehicle information to assist driving (manual driving or automatic driving).
- the car receiver Since there is no central controller to inform the current car network (V2V) network information, and there is no central controller to arrange or coordinate the orthogonal sub-pools and extension sequences used by each vehicle, the car receiver does not know how many vehicles are around. The car does not know the orthogonal sub-pools and extension sequences used by each car. Therefore, the vehicle receiver needs to apply an advanced signal detection method, and a multi-user detection method based on serial interference cancellation can usually be applied.
- V2V current car network
- each iteration needs to have a process of "traversing" the orthogonal sub-pools and all the extended sequences of the extended sequence set, and in order to simplify the complexity of the traversal process, it is usually possible to traverse the number first. There are fewer orthogonal subpools to find out which vehicles have the strongest signal in the current iteration. Then, the current front vehicle information is demodulated, and the vehicle information is used to obtain the accurate extended sequence information and the orthogonal sub-pool sub-information, and the broadcast information of the vehicle can be further reconstructed, and then the reconstructed broadcast information is used as a known signal. Channel estimation. The resulting channel is then weighted. Finally, the broadcast information after the weighted channel is subtracted from the received broadcast signal. Then go to the next iteration.
- modules or steps of the present invention described above can be implemented by a general-purpose computing device that can be centralized on a single computing device or distributed across a network of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein.
- the steps shown or described are performed, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps thereof are fabricated as a single integrated circuit module.
- the invention is not limited to any specific combination of hardware and software.
- the transmitting end In the V2V communication in the embodiment of the present invention, the transmitting end generates a transmission signal by using a symbol extension technology, and carries the transmission signal on the designated transmission channel or the first time-frequency resource for broadcasting. In this way, after receiving the broadcast signal, the receiving end can perform interference cancellation and the like based on the symbol extension technology, so that even if the transmission symbol collision of different in-vehicle devices can be correctly demodulated, the transmission quality caused by the collision is solved. Poor problems have positive industrial effects.
- the transmitting end can generate the transmission symbol through the symbol extension technology, and the receiving end can perform the interference elimination based on the extended symbol technology, and has the characteristics of simple implementation and wide-scale application in the industry.
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Abstract
本发明实施例提供了一种信号发送、信息提取方法及装置、车载设备及存储介质;其中,该信号发送方法包括:将交通工具的第一指定信息通过符号扩展技术生成传输信号;在交通工具所在车联网的指定传输信道或第一时频资源上广播生成的传输信号。
Description
本申请基于申请号为201611168299.7、申请日为2016年12月16日的中国专利申请提出,并要求该中国专利申请的优先权,该中国专利申请的全部内容在此引入本申请作为参考。
本发明涉及无线通信领域,具体涉及一种信号发送、信息提取方法及装置、发射器、接收器及存储介质。
交通工具间通信(Vehicle to Vehicle,简称V2V)是指交通工具之间的信息交互。而V2V最为常见的形式是车辆之间的通信,下面为了叙述简便,统一用“车辆”指代“交通工具”,也就是说,即下面“车辆”是一个广义的交通工具,可以是汽车,自行车,电动车,踏板车,船,飞机,有轨列车等。所以交通工具间通信(V2V)也可以用“车联网”指代。
车联网通信往往需要低时延高可靠,才能有效地预防/避免事故的发生。
若沿用基于中心控制器(如基站)架构的移动通信方法,则车辆之间的信息需要经过基站才能交互,这会带来两个严峻的问题:时延较大,可能难以满足车联网的需求。车流量较大时,会出现大量的非常频繁的通信,基站可能不堪重负,导致通信拥塞,也难以满足车联网低时延高可靠的需求。若车联网通信往往会考虑绕过基站,采用车辆之间直接通信的方式,以减少时延,这是一种扁平化的通信网络。然而使用这种扁平化的直连通信的过程中发现不同车载设备发送的信号碰撞混叠现象严重,导致了通信质量差的问题。
发明内容
本发明实施例提供了一种信号发送、信息提取方法及装置、发射器、接收器,以至少解决相关技术中车联网系统中车辆间的信号出现碰撞混叠后难以解调信息的问题。
根据本发明的一个实施例,提供了一种信号发送方法,包括:将交通工具的第一指定信息通过符号扩展技术生成传输信号;在交通工具所在车联网的指定传输信道或第一时频资源上广播生成的传输信号。
根据本发明的一个实施例,提供了一种信息提取方法,包括:接收车联网中各个交通工具广播的传输信号;其中,传输信号为交通工具的第一指定信息通过符号扩展技术生成的传输信号;从接收到的传输信号中提取各个交通工具的第一指定信息。
根据本发明的一个实施例,提供了一种信号发送装置,包括:生成模块,配置为将交通工具的第一指定信息通过符号扩展技术生成传输信号;广播模块,配置为在交通工具所在车联网的指定传输信道或第一时频资源上广播生成的传输信号。
根据本发明的一个实施例,提供了一种信息提取装置,包括:接收模块,配置为接收车联网中各个交通工具广播的传输信号;其中,传输信号为交通工具的第一指定信息通过符号扩展技术生成的传输信号;提取模块,配置为从接收到的传输信号中提取各个交通工具的第一指定信息。
根据本发明的一个实施例,提供了一种车载设备,包括发射器,位于交通工具中,包括:生成器,配置为将交通工具的第一指定信息通过符号扩展技术生成传输信号;射频模块,与生成器连接,配置为在交通工具所在车联网的指定传输信道或第一时频资源上广播生成的传输信号。
根据本发明的一个实施例,提供了一种车载设备,包括接收器,位于交通工具中,包括:传输装置,配置为接收车联网中各个交通工具广播的
传输信号;其中,传输信号为交通工具的第一指定信息通过符号扩展技术生成的传输信号;处理器,配置为从接收到的传输信号中提取各个交通工具的第一指定信息。
根据本发明的一个实施例,提供了一种交通工具,包括:上述的发射器和上述的接收器。
根据本发明的又一个实施例,还提供了一种存储介质,该存储介质存储有计算机可执行代码,该计算机可执行代码被执行后,能够实现前述技术方案提供的信号发送方法或执行前述技术方案提供的信息提取方法。
在本发明实施例中,由于通过符号扩展技术将交通工具的第一指定信息生成传输信号,然后在指定传输信道或可用时频资源上广播生成的传输信号,即通过符号扩展技术对第一指定信息进行扩展,进而可以在出现碰撞混叠的情况下为接收端解调出各个交通工具的信息提供了可能,因此,可以解决相关技术中车联网系统中车辆间的信号出现碰撞混叠后难以解调信息的问题,从而能减少车联网通信的时延,并能用相同的时频资源支持更多的车辆间通信。
此处所说明的附图用来提供对本发明的进一步理解,构成本申请的一部分,本发明的示意性实施例及其说明用于解释本发明,并不构成对本发明的不当限定。在附图中:
图1是本发明实施例的一种信号发送方法的车辆终端的硬件结构框图;
图2是根据本发明实施例的信号发送方法的流程图;
图3是根据本发明实施例提供的信息提取方法的流程示意图;
图4是根据本发明实施例的信号发送装置的结构框图;
图5是根据本发明实施例的信息提取装置的结构框图;
图6是根据本发明实施例提供的发射器的结构框图;
图7是根据本发明实施例提供的接收器的结构框图;
图8是更具本发明可选实施例提供的符号扩展技术的示意图;
图9是根据本发明可选实施例提供的场景的示意图;
图10是根据本发明可选实施例提供的信息生成和传输方法的流程示意图;
图11是根据本发明可选实施例提供的应用了数据前导方案后的信息生成和传输方法的示意图。
下文中将参考附图并结合实施例来详细说明本发明。应当理解,以下所说明的可选实施例仅用于说明和解释本发明,并不用于限定本发明。
需要说明的是,本发明的说明书和权利要求书及上述附图中的术语“第一”、“第二”等是用于区别类似的对象,而不必用于描述特定的顺序或先后次序。
研究发现,采用车载设备之间的直接通信(直连通信)由于没有基站这个中心控制器来“协调”“调度”各车辆的通信资源,则车辆的信息生成和传输资源的选择必然都是车辆自主决定的。在整个V2V车联网的系统角度看来,这样的由车辆“个体”自主决定的传输参数,可以说是无关联的,甚至可以说是随机的。这样车辆间的信号很容易就会出现碰撞混叠在一起的情况,这给信息解调带来很大挑战,也就是给通信的可靠性带来很大挑战。有鉴于此,通过符号扩展技术将交通工具的第一指定信息生成传输信号,然后在指定传输信道或可用时频资源上广播生成的传输信号,即通过符号扩展技术对第一指定信息进行扩展,进而可以在出现碰撞混叠的情况下为接收端解调出各个交通工具的信息提供了可能,进而解决不同设备之间传输的信号碰撞之后,无法正确解调,导致接收端无法正确接收发送端
发送的信号的通信质量问题,从而提升了V2V通信的通信质量。
实施例1
本申请实施例1所提供的方法实施例可以在交通工具,比如汽车,自行车,电动车,踏板车,船,飞机,有轨列车等中执行。以运行在车辆终端上为例,图1是本发明实施例的一种信号发送方法的车辆终端的硬件结构框图。如图1所示,车辆终端10可以包括一个或多个(图中仅示出一个)处理器102(处理器102可以包括但不限于微处理器MCU或可编程逻辑器件FPGA等的处理装置)、用于存储数据的存储器104、以及用于通信功能的传输装置106。本领域普通技术人员可以理解,图1所示的结构仅为示意,其并不对上述电子装置的结构造成限定。例如,车辆终端10还可包括比图1中所示更多或者更少的组件,或者具有与图1所示不同的配置。
存储器104可用于存储应用软件的软件程序,扩展序列集合以及模块,如本发明实施例中的信号发送方法对应的程序指令/模块,处理器102通过运行存储在存储器104内的软件程序,扩展序列集合以及模块,从而执行各种功能应用以及数据处理,即实现上述的方法。存储器104可包括高速随机存储器,还可包括非易失性存储器,如一个或者多个磁性存储装置、闪存、或者其他非易失性固态存储器。在一些实例中,存储器104可进一步包括相对于处理器102远程设置的存储器,这些远程存储器可以通过网络连接至车辆终端10。上述网络的实例包括但不限于互联网、企业内部网、局域网、移动通信网及其组合。
传输装置106用于经由一个网络接收或者发送数据。上述的网络具体实例可包括车辆终端10的通信供应商提供的无线网络。在一个实例中,传输装置106包括一个网络适配器(Network Interface Controller,NIC),其可通过基站与其他网络设备相连从而可与互联网进行通讯。在一个实例中,传输装置106可以为射频(Radio Frequency,RF)模块,其用于通过无线
方式与互联网进行通讯。
在本实施例中提供了一种运行于上述车辆终端的信号发送方法,图2是根据本发明实施例的信号发送方法的流程图,如图2所示,该流程包括如下步骤:
步骤S202,将交通工具的第一指定信息通过符号扩展技术生成传输信号;
步骤S204,在交通工具所在车联网的指定传输信道或第一时频资源上广播生成的传输信号。
通过上述步骤,由于通过符号扩展技术将交通工具的第一指定信息生成传输信号,然后在指定传输信道或可用时频资源上广播生成的传输信号,即通过符号扩展技术对第一指定信息进行扩展,进而可以在出现碰撞混叠的情况下为接收端解调出各个交通工具的信息提供了可能,因此,可以解决相关技术中车联网系统中车辆间的信号出现碰撞混叠后难以解调信息的问题从而能减少车联网通信的时延,并能用相同的时频资源支持更多的车辆间通信。
需要说明的是,在符号扩展技术中是需要进行使用扩展序列的,因而在本发明的一个实施例中,在上述步骤S202之前,上述方法还可以包括:依据第二指定信息确定符号扩展技术中所使用的扩展序列;其中,第二指定信息由以下至少之一信息产生:第一指定信息和与交通工具广播传输信号相关的参数信息。
具体的,依据第二指定信息确定符号扩展技术中所使用的扩展序列可以表现为:根据第二指定信息确定扩展序列的索引;根据索引从预先配置的扩展序列集合中选择与索引对应的扩展序列作为符号扩展技术中所使用的扩展序列。基于第二指定信息确定符号扩展技术中的扩展序列使得每次传输中,生成传输信号所使用的扩展序列不同。
需要说明的是,上述扩展序列集合中包含的扩展序列的元素越多,则使得不同交通工具选择的扩展序列是不同的几率就越小,并且对于同一交通工具在不同传输时所使用的扩展序列是不同的几率也越小,实现的技术效果就越好。
在本发明的一个实施例中,上述扩展序列集合中的扩展序列的元素取自以下集合至少之一:{1,1i,-1,-1i};{1,-1};{1i,-1i};{1};{-1};{1i};{-1i};{1+1i,-1+1i,-1-1i,1-1i};{0};{1,1i,-1,-1i,0};{1+1i,-1+1i,-1-1i,1-1i,0};{1,1i,-1,-1i,2,2i,-2,-2i,0};其中,i=sqrt(-1),sqrt()为平方根函数。
在本发明的一个实施例中,上述扩展序列集合中的扩展序列为基于第一扩展序列集合中的扩展序列和第二扩展序列集合中的扩展序列中通过序列点乘运算生成的,或者为将所述第二扩展序列集合中扩展序列中的非零元素所在位置的元素替换为由所述非零元素组成的第一指定序列与所述第一扩展序列集合中与所述第一指定序列的序列长度相等的扩展序列进行点乘运算生成的第二指定序列的元素后得到的扩展序列。
需要说明的是,序列点乘运算为两条序列中相同位置的元素相乘,比如序列a=(a1,a2,a3,a4);序列b=(b1,b2,b3,b4),则序列a与序列b的点乘运算结果是(a1*b1,a2*b2,a3*b3,a4*b4)。
需要说明的是,所述第一扩展序列集合包括下述扩展序列集合,以及由下述扩展序列集合经过处理后形成的扩展序列集合,至少之一;其中,对下述扩展序列集合处理,包括:将下述扩展序列集合中的每条扩展序列或每条扩展序列的第X个序列元素乘以1、1i、-1、或-1i,或者乘以1i的A次方;或者,对下述扩展序列集合中的每条扩展序列或每条扩展序列的第X个序列元素进行W×π的相位调整或旋转,或者乘以exp(j×W×π),其中,j=sqrt(-1);或者,对下述扩展序列集合中的每条扩展序列或每条扩展序列
的第X个序列元素乘以指定值,或者分别乘以指定值;其中,X为大于或等于1且小于或等于扩展序列长度的整数,A为整数,W为实数;
其中,第一扩展序列集合,可以包括下述扩展序列集合至少之一:
扩展序列集合1:所述扩展序列集合1:包含4条长度为4的扩展序列,其中,第一扩展序列为[1,1,1,1],第二扩展序列为[1,1,1i,-1i],第三扩展序列为[1,1i,1,-1i],第四扩展序列为[1,1i,1i,-1];扩展序列集合2:所述扩展序列集合2,包含4条长度为4的扩展序列,其中,第一扩展序列为[1,1,1,-1],第二扩展序列为[1,1,1i,1i],第三扩展序列为[1,1i,1,1i],第四扩展序列为[1,1i,1i,1];扩展序列集合3:所述扩展序列集合3,包含4条长度为4的扩展序列,其中,第一扩展序列为[1,1,1,1i],第二扩展序列为[1,1,1i,1],第三扩展序列为[1,1i,1,1],第四扩展序列为[1,1i,1i,-1i];扩展序列集合4:所述扩展序列集合4,包含4条长度为4的扩展序列,其中,第一扩展序列为[1,1,1,-1i],第二扩展序列为[1,1,1i,-1],第三扩展序列为[1,1i,1,-1],第四扩展序列为[1,1i,1i,1i];扩展序列集合5:所述扩展序列集合5,包含1条长度为2的扩展序列,其中,第一扩展序列为[1,1];扩展序列集合6:所述扩展序列集合6,包含1条长度为2的扩展序列,其中,第一扩展序列为[1,-1];扩展序列集合7:所述扩展序列集合7,包含1条长度为2的序列,其中,第一序列为[1,1i];扩展序列集合8:所述扩展序列集合8,包含1条长度为2的扩展序列,其中,第一序列为[1,-1i];扩展序列集合9:所述扩展序列集合9,包含4条长度为1的扩展序列,其中,第一扩展序列为[1],第二扩展序列为[1i],第三扩展序列为[-1],第四扩展序列为[-1i];扩展序列集合10:所述扩展序列集合10,包含4条长度为1的扩展序列,其中,第一扩展序列为[1+1i],第二扩展序列为[-1+1i],第三扩展序列为[-1-1i],第四扩展序列为[1-1i];扩展序列集合11:所述扩展序列集合11,包含2条长
度为1的扩展序列,其中,第一扩展序列为[1],第二扩展序列为[-1];扩展序列集合12:所述扩展序列集合12,包含2条长度为1的扩展序列,其中,第一扩展序列为[1i],第二扩展序列为[-1i];扩展序列集合13:所述扩展序列集合13,包含1条长度为1的扩展序列,其中,第一扩展序列为[1];扩展序列集合14:所述扩展序列集合14,包含1条长度为1的扩展序列,其中,第一扩展序列为[-1];扩展序列集合15:所述扩展序列集合15,包含1条长度为1的扩展序列,其中,第一扩展序列为[1i];扩展序列集合16:所述扩展序列集合16,包含1条长度为1的扩展序列,其中,第一扩展序列为[-1i];扩展序列集合17:所述扩展序列集合17,包含4条长度为3的扩展序列,其中,第一扩展序列为[1,1,1];第二扩展序列为[1,-1,-1],第三扩展序列为[-1,1,-1],第四扩展序列为[-1,1,1];其中,i为虚数单位,i=sqrt(-1)。
需要说明的是,所述第二扩展序列集合可以包括以下至少之一:哈达玛序列集合;沃尔什序列集合;离散傅里叶变换序列集合;包含指定数量或指定比例的0元素的序列的集合;单位矩阵序列集合;所述第二扩展序列集合中每条扩展序列的长度与所述第一扩展序列集合中每条扩展序列的长度相同。
需要说明的是,所述第二扩展序列集合可以包括下述扩展序列集合,以及由下述扩展序列集合经过处理后形成的扩展序列集合,至少之一;其中,对下述扩展序列集合处理,包括:对下述扩展序列集合中的每条扩展序列或每条扩展序列的第X个序列元素乘以1、1i、-1、或-1i,或者乘以1i的A次方;或者,对下述扩展序列集合中的每条扩展序列或每条扩展序列的第X个序列元素进行W×π的相位调整或旋转,或者乘以exp(j×W×π),j=sqrt(-1);或者,对下述扩展序列集合中的每条扩展序列或每条扩展序列的第X个序列元素乘以指定值,或者分别乘以指定值;其中,X
为大于或等于1且小于或等于序列长度的整数,A为整数,W为实数。
所述扩展序列集合包括:扩展序列集合1至扩展序列集合9中的一个或多个。
扩展序列集合1,包含4条长度为4的扩展序列,其中,第一扩展序列为[1,1,1,1],第二扩展序列为[1,1,-1,-1],第三扩展序列为[1,-1,1,-1],第四扩展序列为[1,-1,-1,1]。
扩展序列集合2包含4条长度为4的扩展序列。
在另一些实施例中,第一扩展序列为[1,1,1,1],第二扩展序列为[1,1i,-1,-1i],第三扩展序列为[1,-1,1,-1],第四扩展序列为[1,-1i,-1,1i]。
扩展序列集合3包含2条长度为2的扩展序列,其中,第一扩展序列为[1,1],第二扩展序列为[1,-1]。
扩展序列集合4包含1条长度为1的扩展序列,其中,第一扩展序列为[1]。
扩展序列集合5包含6条长度为4的扩展序列,其中,第一扩展序列为[1,1,0,0],第二扩展序列为[1,0,1,0],第三扩展序列为[1,0,0,1],第四扩展序列为[0,1,1,0],第五扩展序列为[0,1,0,1],第六扩展序列为[0,0,1,1]。
扩展序列集合6包含4条长度为6的扩展序列,其中,第一扩展序列为[1,1,1,0,0,0],第二扩展序列为[1,0,0,1,1,0],第三扩展序列为[0,1,0,0,1,1],第四扩展序列为[0,0,1,1,0,1],扩展序列集合7。
扩展序列集合7,包含4条长度为6的扩展序列,其中,第一扩展序列为[1,0,1,0,1,0],第二扩展序列为[1,0,0,1,0,1],第三扩展序列为[0,1,1,0,0,1],第四扩展序列为[0,1,0,1,1,0]。
扩展序列集合8包含4条长度为4的扩展序列,其中,第一扩展序列为[1,0,0,0],第二扩展序列为[0,1,0,0],第三扩展序列为[0,0,1,0],第四扩展序列为[0,0,0,1]。
扩展序列集合9包含6条长度为6的扩展序列,其中,第一扩展序列为[+1+1+1+1+1+1],第二扩展序列为[+1+1+i-1-1-i],第三扩展序列为[+1+i-i+i-i-1],第四扩展序列为[+1-1+1-i-1+i],第五扩展序列为[+1-1-1+1+i-i],第六扩展序列为[+1-i-1-1+1+i];其中,i为虚数单位,i=sqrt(-1)。
需要说明的是,所述扩展序列集合包括下述扩展序列集合,以及由下述扩展序列集合经过处理后形成的扩展序列集合,至少之一;其中,对下述扩展序列集合进行处理包括:对下述扩展序列集合中的每条扩展序列或每条扩展序列的第X个序列元素乘以1、1i、-1、或-1i,或者乘以1i的A次方;或者,对下述扩展序列集合中的每条扩展序列或每条扩展序列的第X个序列元素进行W×π的相位调整或旋转,或者乘以exp(j×W×π),j为虚数单位,j=sqrt(-1);或者,对下述扩展序列集合中的每条扩展序列或每条扩展序列的第X个序列元素乘以指定值,或者分别乘以指定值;其中,X为大于或等于1且小于或等于序列长度的整数,A为整数,W为实数。
例如,扩展序列集合可包括以下扩展集合中的一个或多个:
扩展序列集合1,包含16条长度为4的扩展序列,其中,第一扩展序列为[1,1,1,1],第二扩展序列为[1,1,-1,-1],第三扩展序列为[1,-1,1,-1],第四扩展序列为[1,-1,-1,1],第五扩展序列为[1,1,1i,-1i],第六扩展序列为[1,1,-1i,1i],第七扩展序列为[1,-1,1i,1i],第八扩展序列为[1,-1,-1i,-1i],第九扩展序列为[1,1i,1,-1i],第十扩展序列为[1,1i,-1,1i],第十一扩展序列为[1,-1i,1,1i],第十二扩展序列为[1,-1i,-1,-1i],第十三扩展序列为[1,1i,1i,-1],第十四扩展序列为[1,
1i,-1i,1],第十五扩展序列为[1,-1i,1i,1],第十六扩展序列为[1,-1i,-1i,-1];
扩展序列集合2,包含16条长度为4的扩展序列,其中,第一扩展序列为[1,1,1,-1],第二扩展序列为[1,1,-1,1],第三扩展序列为[1,-1,1,1],第四扩展序列为[1,-1,-1,-1],第五扩展序列为[1,1,1i,1i],第六扩展序列为[1,1,-1i,-1i],第七扩展序列为[1,-1,1i,-1i],第八扩展序列为[1,-1,-1i,1i],第九扩展序列为[1,1i,1,1i],第十扩展序列为[1,1i,-1,-1i],第十一扩展序列为[1,-1i,1,-1i],第十二扩展序列为[1,-1i,-1,1i],第十三扩展序列为[1,1i,1i,1],第十四扩展序列为[1,1i,-1i,-1],第十五扩展序列为[1,-1i,1i,-1],第十六扩展序列为[1,-1i,-1i,1];
扩展序列集合3,包含16条长度为4的扩展序列,其中,第一扩展序列为[1,1,1,1i],第二扩展序列为[1,1,-1,-1i],第三扩展序列为[1,-1,1,-1i],第四扩展序列为[1,-1,-1,1i],第五扩展序列为[1,1,1i,1],第六扩展序列为[1,1,-1i,-1],第七扩展序列为[1,-1,1i,-1],第八扩展序列为[1,-1,-1i,1],第九扩展序列为[1,1i,1,1],第十扩展序列为[1,1i,-1,-1],第十一扩展序列为[1,-1i,1,-1],第十二扩展序列为[1,-1i,-1,1],第十三扩展序列为[1,1i,1i,-1i],第十四扩展序列为[1,1i,-1i,1i],第十五扩展序列为[1,-1i,1i,1i],第十六扩展序列为[1,-1i,-1i,-1i];
扩展序列集合4,包含16条长度为4的扩展序列,其中,第一扩展序列为[1,1,1,-1i],第二扩展序列为[1,1,-1,1i],第三扩展序列为[1,-1,1,1i],第四扩展序列为[1,-1,-1,-1i],第五扩展序列为[1,1,1i,-1],第六扩展序列为[1,1,-1i,1],第七扩展序列为[1,-1,1i,1],第八扩展序列为[1,-1,-1i,-1],第九扩展序列为[1,1i,1,-1],第十扩展序
列为[1,1i,-1,1],第十一扩展序列为[1,-1i,1,1],第十二扩展序列为[1,-1i,-1,-1],第十三扩展序列为[1,1i,1i,1i],第十四扩展序列为[1,1i,-1i,-1i],第十五扩展序列为[1,-1i,1i,-1i],第十六扩展序列为[1,-1i,-1i,1i];
扩展序列集合5,包含32条长度为4的扩展序列,其中,第一扩展序列为[1,1,1,1],第二扩展序列为[1,1i,-1,-1i],第三扩展序列为[1,-1,1,-1],第四扩展序列为[1,-1i,-1,1i],第五扩展序列为[1,1,1i,-1i],第六扩展序列为[1,1i,-1i,-1],第七扩展序列为[1,-1,1i,1i],第八扩展序列为[1,-1i,-1i,1],第九扩展序列为[1,1i,1,-1i],第十扩展序列为[1,-1,-1,-1],第十一扩展序列为[1,-1i,1,1i],第十二扩展序列为[1,1,-1,1],第十三扩展序列为[1,1i,1i,-1],第十四扩展序列为[1,-1,-1i,1i],第十五扩展序列为[1,-1i,1i,1],第十六扩展序列为[1,1,-1i,-1i],第十七扩展序列为[1,1,1,-1],第十八扩展序列为[1,1i,-1,1i],第十九扩展序列为[1,-1,1,1],第二十扩展序列为[1,-1i,-1,-1i],第二十一扩展序列为[1,1,1i,1i],第二十二扩展序列为[1,1i,-1i,1],第二十三扩展序列为[1,-1,1i,-1i],第二十四扩展序列为[1,-1i,-1i,-1],第二十五扩展序列为[1,1i,1,1i],第二十六扩展序列为[1,-1,-1,1],第二十七扩展序列为[1,-1i,1,-1i],第二十八扩展序列为[1,1,-1,-1],第二十九扩展序列为[1,1i,1i,1],第三十扩展序列为[1,-1,-1i,-1i],第三十一扩展序列为[1,-1i,1i,-1],第三十二扩展序列为[1,1,-1i,1i];
扩展序列集合6,包含32条长度为4的扩展序列,其中,第一扩展序列为[1,1,1,1i],第二扩展序列为[1,1i,-1,1],第三扩展序列为[1,-1,1,-1i],第四扩展序列为[1,-1i,-1,-1],第五扩展序列为[1,1,1i,1],第六扩展序列为[1,1i,-1i,-1i],第七扩展序列为[1,-1,1i,-1],第八扩展序列为[1,-1i,-1i,1i],第九扩展序列为[1,1i,1,1],第十扩展序列
为[1,-1,-1,-1i],第十一扩展序列为[1,-1i,1,-1],第十二扩展序列为[1,1,-1,i],第十三扩展序列为[1,1i,1i,-1i],第十四扩展序列为[1,-1,-1i,-1],第十五扩展序列为[1,-1i,1i,i],第十六扩展序列为[1,1,-1i,1],第十七扩展序列为[1,1,1,-1i],第十八扩展序列为[1,1i,-1,-1],第十九扩展序列为[1,-1,1,1i],第二十扩展序列为[1,-1i,-1,1],第二十一扩展序列为[1,1,1i,-1],第二十二扩展序列为[1,1i,-1i,1i],第二十三扩展序列为[1,-1,1i,1],第二十四扩展序列为[1,-1i,-1i,-1i],第二十五扩展序列为[1,1i,1,-1],第二十六扩展序列为[1,-1,-1,1i],第二十七扩展序列为[1,-1i,1,1],第二十八扩展序列为[1,1,-1,-1i],第二十九扩展序列为[1,1i,1i,1i],第三十扩展序列为[1,-1,-1i,1],第三十一扩展序列为[1,-1i,1i,-1i],第三十二扩展序列为[1,1,-1i,-1];
扩展序列集合7,包含4条长度为4的扩展序列,其中,第一扩展序列为[1,0,0,0],第二扩展序列为[0,1,0,0],第三扩展序列为[0,0,1,0],第四扩展序列为[0,0,0,1];
扩展序列集合8,包含16条长度为6的扩展序列,其中,第一扩展序列为[1,0,1,0,1,0],第二扩展序列为[-1,0,1,0,-1,0],第三扩展序列为[1,0,-1,0,-1,0],第四扩展序列为[-1,0,-1,0,1,0],第五扩展序列为[1,0,0,1,0,1],第六扩展序列为[-1,0,0,1,0,-1],第七扩展序列为[1,0,0,-1,0,-1],第八扩展序列为[-1,0,0,-1,0,1],第九扩展序列为[0,1,1,0,0,1],第十扩展序列为[0,-1,1,0,0,-1],第十一扩展序列为[0,1,-1,0,0,-1],第十二扩展序列为[0,-1,-1,0,0,1],第十三扩展序列为[0,1,0,1,1,0],第十四扩展序列为[0,-1,0,1,-1,0],第十五扩展序列为[0,1,0,-1,-1,0],第十六扩展序列为[0,-1,0,-1,1,0];
扩展序列集合9,包含16条长度为6的扩展序列,其中,第一扩展序
列为[1,1,1,0,0,0],第二扩展序列为[-1,1,-1,0,0,0],第三扩展序列为[1,-1,-1,0,0,0],第四扩展序列为[-1,-1,1,0,0,0],第五扩展序列为[0,0,1,1,1,0],第六扩展序列为[0,0,-1,-1,1,0],第七扩展序列为[0,0,-1,1,-1,0],第八扩展序列为[0,0,1,-1,-1,0],第九扩展序列为[1,0,0,0,1,1],第十扩展序列为[-1,0,0,0,1,-1],第十一扩展序列为[1,0,0,0,-1,-1],第十二扩展序列为[-1,0,0,0,-1,1],第十三扩展序列为[0,1,0,1,0,1],第十四扩展序列为[0,1,0,-1,0,-1],第十五扩展序列为[0,-1,0,1,0,-1],第十六扩展序列为[0,-1,0,-1,0,1];
扩展序列集合10,包含16条长度为6的扩展序列,其中,第一扩展序列为[1,1,1,1,1,1],第二扩展序列为[1,1,1,1,-1,-1],第三扩展序列为[1,1,1,-1,1,-1],第四扩展序列为[1,1,1,-1,-1,1],第五扩展序列为[1,1,-1,1,1,-1],第六扩展序列为[1,1,-1,1,-1,1],第七扩展序列为[1,1,-1,-1,1,1],第八扩展序列为[1,1,-1,-1,-1,-1],第九扩展序列为[1,-1,1,1,1,-1],第十扩展序列为[1,-1,1,1,-1,1],第十一扩展序列为[1,-1,1,-1,1,1],第十二扩展序列为[1,-1,1,-1,-1,-1],第十三扩展序列为[1,-1,-1,1,1,1],第十四扩展序列为[1,-1,-1,1,-1,-1],第十五扩展序列为[1,-1,-1,-1,1,-1],第十六扩展序列为[1,-1,-1,-1,-1,1];扩展序列集合11:所述扩展序列集合11,包含32条长度为4的扩展序列,其中,第一扩展序列为[1+0i,1+0i,1+0i,1+0i],第二扩展序列为[1+0i,0+1i,-1+0i,-0-1i],第三扩展序列为[1+0i,-1+0i,1+0i,-1+0i],第四扩展序列为[1+0i,-0-1i,-1+0i,0+1i],第五扩展序列为[0+2i,-0-1i,0+2i,0+1i],第六扩展序列为[0+2i,1+0i,-0-2i,1+0i],第七扩展序列为[0+2i,0+1i,0+2i,-0-1i],第八扩展序列为[0+2i,-1+0i,-0-2i,-1+0i],第九扩
展序列为[0+2i,-0-1i,-1+0i,2+0i],第十扩展序列为[0+2i,1+0i,1+0i-0-2i],第十一扩展序列为[0+2i,0+1i,-1+0i,-2+0i],第十二扩展序列为[0+2i,-1+0i,1+0i,0+2i],第十三扩展序列为[0+2i,-0-1i,0+0i,-1+0i],第十四扩展序列为[0+2i,1+0i,0+0i,0+1i],第十五扩展序列为[0+2i,0+1i,0+0i,1+0i],第十六扩展序列为[0+2i,-1+0i,0+0i,-0-1i],第十七扩展序列为[-1+0i,-0-1i,-0-2i,-2+0i],第十八扩展序列为[-1+0i,1+0i,0+2i,0+2i],第十九扩展序列为[-1+0i,0+1i,-0-2i,2+0i],第二十扩展序列为[-1+0i,-1+0i,0+2i,-0-2i],第二十一扩展序列为[-1+0i,-2+0i,0+2i,0+1i],第二十二扩展序列为[-1+0i,-0-2i,-0-2i,1+0i],第二十三扩展序列为[-1+0i,2+0i,0+2i,-0-1i],第二十四扩展序列为[-1+0i,0+2i,-0-2i,-1+0i],第二十五扩展序列为[-1+0i,-2+0i,1+0i,-2+0i],第二十六扩展序列为[-1+0i,-0-2i,-1+0i,0+2i],第二十七扩展序列为[-1+0i,2+0i,1+0i,2+0i],第二十八扩展序列为[-1+0i,0+2i,-1+0i,-0-2i],第二十九扩展序列为[-1+0i,-2+0i,-0-1i,0+0i],第三十扩展序列为[-1+0i,-0-2i,0+1i,0+0i],第三十一扩展序列为[-1+0i,2+0i,-0-1i,0+0i],第三十二扩展序列为[-1+0i,0+2i,0+1i,0+0i];其中,i为虚数单位,i=sqrt(-1)。
需要说明的是,上述第二指定信息可以是一个索引信息,但并不限于此。
需要说明的是,上述第一指定信息可以包括以下至少之一信息:车况信息、驾驶员的操作信息、交通工具传感器所感知的信息和控制信令;其中,车况信息可以包括以下至少之一:交通工具标识、交通工具当前地理位置、交通工具的行驶速度、交通工具的大小、交通工具的颜色;操作信息可以包括以下至少之一:驾驶员对交通工具正在进行的操作,驾驶员准备对交通工具进行的操作。
所述交通工具的大小,可包括:交通工具的体积、长、宽以及几轮等可描述交通工具的体积等方面的参数。
需要说明的是,驾驶员对交通工具正在进行的操作可以包括以下至少之一:刹车、启动、加速、变道和转向;驾驶员准备对交通工具进行的操作可以包括以下至少之一:准备刹车、准备启动、准备加速、准备变道和准备转向。
需要说明的是,与交通工具广播传输信号相关的系统参数信息,即与本次传输相关的系统参数信息,可以包括以下至少之一:交通工具广播传输信号的系统帧号;所述交通工具广播所述传输信号的频域位置信息。需要说明的是,这些参数信息是其他接收上述传输信号的交通工具的接收机所知道的,这样能够增加扩展序列的随机性,避免两个交通工具多次传输使用相同序列扩展的问题,进而可以提高可靠性。
在本发明的一个实施例中,上述方法还可以包括:确定用于传输第三指定信息的第二时频资源上的子资源池;其中,所述子资源池是对所述第二时频资源通过正交划分方式划分得到的;在确定的所述子资源池上传输所述第三指定信息。
需要说明的是,上述正交划分方式可以包括以下至少之一:频域划分、时域划分、时频域划分、码域划分,但并不限于此。划分得到的各个子资源池之间可以是正交的。
需要说明的是,上述第一时频资源与上述第二时频资源之间可以存在一定的保护间隔,也可以不存在保护间隔,并不限于此。
需要说明的是,第三指定信息为第一指定信息中的部分信息,比如可以是第一指定信息中优先级高的信息,比如交通工具当前地理位置、刹车、变道等信息,但并不限于此。即实际上上述第三指定信息可以是第一指定信息中的一些关键信息,通过将这些关键信息多传输一次,可以简化接收
到上述传输信号的交通工具进行盲检的流程,并且能够提供盲检的可靠性。
需要说明的是,上述第三指定信息还可以是所述第一指定信息中的部分信息和所述第一指定信息生成的信息,但并不限于此。
需要说明的是,上述确定传输第三指定信息的正交资源池的执行顺序可以是在上述步骤S202之前,也可以在上述步骤S202之后,或者与上述步骤S202同时执行,但并不限于此。
需要说明的是,在所述第一时频资源上广播所述传输信号之前应用的载波调制技术中所采用的参数与在所述子资源池上发送所述第三指定信息之前应用的载波调制技术中所采用的参数相同或者不同。
需要说明的是,上述参数可以包括:子载波间隔和循环前缀(CP)长度。
需要说明的是,确定用于传输第三指定信息的第二时频资源上的子资源池可以表现为:根据第四指定信息确定所述子资源池的索引;将所述第二时频资源上子资源池的索引为确定的所述索引的子资源池作为用于传输所述第三指定信息的子资源池;其中,第四指定信息为第二指定信息的部分或者全部信息;其中,第二指定信息用于确定符号扩展技术中所使用的扩展序列。
需要说明的是,上述第四指示信息可以是一个索引,但并不限于此。
需要说明的是,上述传输信号中还可以包括导频符号,但并不限于此。
需要说明的是,上述导频符号可以用于接收到所述传输号的交通工具解调上述第一指定信息,但并不限于此。
在本发明的一个实施例中,上述步骤S202之前或者之后可以进行载波调制,但并不限于此。
可选地,上述步骤的执行主体可以为交通工具,比如汽车,自行车,电动车,踏板车,船,飞机,有轨列车等,但不限于此。
通过以上的实施方式的描述,本领域的技术人员可以清楚地了解到根据上述实施例的方法可借助软件加必需的通用硬件平台的方式来实现,当然也可以通过硬件,但很多情况下前者是更佳的实施方式。基于这样的理解,本发明的技术方案本质上或者说对现有技术做出贡献的部分可以以软件产品的形式体现出来,该计算机软件产品存储在一个存储介质(如ROM/RAM、磁碟、光盘)中,包括若干指令用以使得一台终端设备(可以是手机,计算机,服务器,或者网络设备等)执行本发明各个实施例所述的方法。
实施例2
在本实施例中提供了一种运行于实施例1中图1所示的交通工具的信息提取方法,图3是根据本发明实施例提供的信息提取方法的流程示意图,如图3所示,上述方法包括:
步骤S302,接收车联网中各个交通工具广播的传输信号;其中,传输信号为交通工具的第一指定信息通过符号扩展技术生成的传输信号;
步骤S304,从接收到的传输信号中提取各个交通工具的第一指定信息。
通过上述步骤,通过接收到的传输符号是交通工具的第一指定信息通过符号扩展技术生成的传输信号,即通过符号扩展技术对第一指定信息进行扩展,可以在出现碰撞混叠的情况下为接收端解调出各个交通工具的第一指定信息,因此,可以解决相关技术中车联网系统中车辆间的信号出现碰撞混叠后难以解调信息的问题从而能减少车联网通信的时延,并能用相同的时频资源支持更多的车辆间通信。
在一些实施例中,所述步骤S304可包括:利用多用户检测技术检测所述广播信号,利用生成不同传输信号的扩展序列等正确解调出所述第一指定信息。在一些实施例中,还可以利用生成不同传输信号的扩展序列、信号强弱、传输时延等信息解调出所述第一指定信息。
所述多用户检测技术是基于码块级干扰消除的多用户检测技术,通常需要涉及一定的盲检,盲信道估计方法。
第一步,从预先确定的扩展序列集合中的扩展序列对接收到信号进行相关处理,从而确定出若干个最有可能被正确解调译码的码块对应的传输信号,及使用扩展序列;对接收到的接收信号关于扩展序列的自相关矩阵或协方差矩阵与扩展序列进行相关处理,从而确定出若干个最有可能被正确解调译码的码块对应的传输信号,及使用扩展序列
第二步,然后对这些传输信号流做信道均衡,
第三步,将信道均衡后信号送去解调译码。
第四步,译码正确的码块会被重新编码调制,加权信道值,然后从混叠信号中消去,然后再回到第一步做下一轮。
通常,第一步“挑选”可以依据参考信号,也可以靠信号本身的统计量,因为事先不知道哪些用户到达,自然也就不知道哪些参考信号到达,所以就算依据参考信号来挑选,也是一种盲检测过程。如果靠信号本身的统计量来挑选,更加是盲检测了。
第二步均衡可以依据参考信号,也可以靠信号本身的符号属性。均衡需要先信道估计,靠信号本身的符号属性的信道估计通常认为是盲信道估计方法。
第三步,可以将均衡后的所有符号流都送去解调译码,也可以通过进一步的筛选,从均衡后的所有符号流中选择最好的几个流,即信噪比最高的几个流去解调译码。
第四步,涉及加权信道值,这个信道值可以通过译码正确的数据重新估计一下,以取得更加准确的信道估计值。
这种先选出最可能被译对的流去均衡解调译码的方法能大大减小译码复杂度,且能保证性能。这种方法能充分利用扩展技术的码域区分度,不
同信号流有强有弱这一功率域区分度,以及多根接收天线的空域区分度来做多用户分离。需要说明的是,由于没有中央控制器通知当前车联网(V2V)的网络信息,也没有中央控制器安排或协调各交通工具所使用的扩展序列或者正交资源池子的,所以交通工具是不知道周围有多少交通工具,也不知道各交通工具所使用的扩展序列和正交资源池的。所以交通工具可以通过盲测方法进行检测,在本发明的一个实施例中,可以通过以下至少之一方式从接收到的传输信号中提取各个交通工具的第一指定信息:基于串行干扰消除的多用户盲检测方法;基于并行干扰消除的多用户盲检测方法;基于混合干扰消除的多用户盲检测方法。
需要说明的是,上述第一指定信息可以包括以下至少之一信息:车况信息、驾驶员的操作信息、交通工具传感器所感知的信息和控制信令;其中,车况信息可以包括以下至少之一:交通工具标识、交通工具当前地理位置、交通工具的行驶速度、交通工具的大小、交通工具的颜色;操作信息可以包括以下至少之一:驾驶员对交通工具正在进行的操作,驾驶员准备对交通工具进行的操作。
上述传感器可以包括多种传感器,比如图像传感器,但并不限于此,比如,一辆大卡车挡住了后面的小车,则大卡车把它摄像头摄得的影像传给后面的小车,其就是图像传感器感知的信息,但并不限于此。
需要说明的是,驾驶员对交通工具正在进行的操作可以包括以下至少之一:刹车、启动、加速、变道和转向;驾驶员准备对交通工具进行的操作可以包括以下至少之一:准备刹车、准备启动、准备加速、准备变道和准备转向。
需要说明的是,上述符号扩展技术中使用的扩展序列由第二指定信息确定,其中,第二指定信息由以下至少之一信息产生:第一指定信息和与交通工具广播传输信号相关的系统参数信息。具体如何根据第二指定信息
确定的扩展序列可以参考实施例1中的描述,以及在确定扩展序列时所采用的扩展序列集合的描述也参考实施例1中的描述,此处不再赘述。
需要说明的是,上述第二指定信息可以是一个索引信息,但并不限于此。
需要说明的是,需要说明的是,与交通工具广播传输信号相关的系统参数信息,即与本次传输相关的系统参数信息,可以包括以下至少之一:交通工具广播传输信号的系统帧号;所述交通工具广播所述传输信号的频域位置信息。需要说明的是,这些参数信息是其他接收上述传输信号的交通工具的接收机所知道的,这样能够增加扩展序列的随机性,避免两个交通工具多次传输使用相同序列扩展的问题,进而可以提高可靠性。
在本发明的一个实施例中,上述方法还包括:接收所述各个交通工具传输的第三指定信息;其中,所述第三指定信息为所述第一指定信息的部分信息。
需要说明的是,接收车联网中各个交通工具广播的传输信号可以表现为:在第一时频资源上接收所述传输信号;接收所述各个交通工具传输的第三指定信息包括:在第二时频资源上的子资源池上接收所述第三指定信息;其中,所述子资源池是对所述第二时频资源通过正交划分方式划分得到的。
需要说明的是,上述正交划分方式可以包括以下至少之一:频域划分、时域划分、时频域划分、码域划分,但并不限于此。划分得到的各个子资源池之间可以是正交的。
需要说明的是,上述第一时频资源与上述第二时频资源之间可以存在一定的保护间隔,也可以不存在保护间隔,并不限于此。
需要说明的是,第三指定信息为第一指定信息中的部分信息,比如可以是第一指定信息中优先级高的信息,比如交通工具当前地理位置、刹车、
变道等信息,但并不限于此。即实际上上述第三指定信息可以是第一指定信息中的一些关键信息,通过将这些关键信息多传输一次,可以简化接收到上述传输信号的交通工具进行盲检的流程,并且能够提供盲检的可靠性。
需要说明的是,上述第三指定信息还可以是所述第一指定信息中的部分信息和所述第一指定信息生成的信息,但并不限于此。
在本发明的一个实施例中,上述正交资源池由第四指定信息确定;其中,第四指定信息为第二指定信息的部分或者全部信息。需要说明的是,上述第四指示信息可以是一个索引,但并不限于此。
需要说明的是,上述传输信号中还可以包括导频符号,但并不限于此。该导频符号,可以用于接收到传输号的交通工具解调第一指定信息,但并不限于此。
需要说明的是,上述步骤的执行主体可以是交通工具,比如汽车,自行车,电动车,踏板车,船,飞机,有轨列车等,但不限于此。
实施例3
在本实施例中还提供了一种信号发送装置,该装置用于实现上述实施例及优选实施方式,已经进行过说明的不再赘述。如以下所使用的,术语“模块”可以实现预定功能的软件和/或硬件的组合。尽管以下实施例所描述的装置较佳地以软件来实现,但是硬件,或者软件和硬件的组合的实现也是可能并被构想的。
图4是根据本发明实施例的信号发送装置的结构框图,如图4所示,该装置包括:
生成模块42,配置为将交通工具的第一指定信息通过符号扩展技术生成传输信号;生成模块42可对应于处理器,可以用于信息处理;
广播模块44,与生成模块42连接,配置为在交通工具所在车联网的指定传输信道或第一时频资源上广播生成的传输信号。广播模块44可对应于
发送天线,可以用于信息的广播。
通过上述装置,通过符号扩展技术对第一指定信息进行扩展,进而可以在出现碰撞混叠的情况下为接收端解调出各个交通工具的信息提供了可能,因此,可以解决相关技术中车联网系统中车辆间的信号出现碰撞混叠后难以解调信息的问题,从而能减少车联网通信的时延,并能用相同的时频资源支持更多的车辆间通信。
在本发明的一个实施例中,上述装置还可以包括:第一确定模块,与上述生成模块42连接,配置为依据第二指定信息确定符号扩展技术中所使用的扩展序列;其中,第二指定信息由以下至少之一信息产生:第一指定信息和与交通工具广播传输信号相关的系统参数信息。
需要说明的是,上述第一确定模块,还可以配置为根据第二指定信息确定扩展序列的索引;根据索引从预先配置的扩展序列集合中选择与索引对应的扩展序列作为符号扩展技术中所使用的扩展序列。基于第二指定信息确定符号扩展技术中的扩展序列使得每次传输中,生成传输信号所使用的扩展序列不同。
需要说明的是,上述扩展序列集合中包含的扩展序列的元素越多,则使得不同交通工具选择的扩展序列是不同的几率就越小,并且对于同一交通工具在不同传输时所使用的扩展序列是不同的几率也越小,实现的技术效果就越好。对于上述扩展序列集合的解释参考实施例1中的描述,此处不再赘述。
需要说明的是,上述第二指定信息可以是一个索引信息,但并不限于此。
需要说明的是,上述第一指定信息可以包括以下至少之一信息:车况信息、驾驶员的操作信息、交通工具传感器所感知的信息和控制信令;其中,车况信息可以包括以下至少之一:交通工具标识、交通工具当前地理
位置、交通工具的行驶速度、交通工具的大小、交通工具的颜色;操作信息可以包括以下至少之一:驾驶员对交通工具正在进行的操作,驾驶员准备对交通工具进行的操作。
需要说明的是,驾驶员对交通工具正在进行的操作可以包括以下至少之一:刹车、启动、加速、变道和转向;驾驶员准备对交通工具进行的操作可以包括以下至少之一:准备刹车、准备启动、准备加速、准备变道和准备转向。
需要说明的是,与交通工具广播传输信号相关的系统参数信息,即与本次传输相关的系统参数信息,可以包括以下至少之一:交通工具广播传输信号的系统帧号;所述交通工具广播所述传输信号的频域位置信息。需要说明的是,这些参数信息是其他接收上述传输信号的交通工具的接收机所知道的,这样能够增加扩展序列的随机性,避免两个交通工具多次传输使用相同序列扩展的问题,进而可以提高可靠性。
在本发明的一个实施例中,上述装置还可以包括:第二确定模块,与上述广播模块44连接,配置为确定用于传输第三指定信息的第二时频资源上的子资源池;其中,所述子资源池是对所述第二时频资源通过正交划分方式划分得到的;广播模块,还用于在确定的所述子资源池上传输所述第三指定信息。
需要说明的是,上述正交划分方式可以包括以下至少之一:频域划分、时域划分、时频域划分、码域划分,但并不限于此。划分得到的各个子资源池之间可以是正交的。
需要说明的是,上述第一时频资源与上述第二时频资源之间可以存在一定的保护间隔,也可以不存在保护间隔,并不限于此。
需要说明的是,第三指定信息为第一指定信息中的部分信息,比如可以是第一指定信息中优先级高的信息,比如交通工具当前地理位置、刹车、
变道等信息,但并不限于此。即实际上上述第三指定信息可以是第一指定信息中的一些关键信息,通过将这些关键信息多传输一次,可以简化接收到上述传输信号的交通工具进行盲检的流程,并且能够提供盲检的可靠性。
需要说明的是,上述第三指定信息还可以是所述第一指定信息中的部分信息和所述第一指定信息生成的信息,但并不限于此。
需要说明的是,在所述第一时频资源上广播所述传输信号之前应用的载波调制技术中所采用的参数与在所述子资源池上发送所述第三指定信息之前应用的载波调制技术中所采用的参数相同或者不同。
需要说明的是,上述参数可以包括:子载波间隔和循环前缀CP长度。
需要说明的是,上述第二确定模块,还用于根据第四指定信息确定所述子资源池的索引;将所述第二时频资源上子资源池的索引为确定的所述索引的子资源池作为用于传输所述第三指定信息的子资源池;其中,第四指定信息为第二指定信息的部分或者全部信息;其中,第二指定信息用于确定符号扩展技术中所使用的扩展序列。
需要说明的是,上述第四指示信息可以是一个索引,但并不限于此。
需要说明的是,上述传输信号中还可以包括导频符号,但并不限于此。需要说明的是,上述导频符号可以用于接收到所述传输号的交通工具解调上述第一指定信息,但并不限于此。
需要说明的是,上述装置可以位于交通工具,比如汽车,自行车,电动车,踏板车,船,飞机,有轨列车等,但不限于此。
需要说明的是,上述各个模块是可以通过软件或硬件来实现的,对于后者,可以通过以下方式实现,但不限于此:上述模块均位于同一处理器中;或者,上述各个模块以任意组合的形式分别位于不同的处理器中。
实施例4
在本实施例中还提供了一种信息提取装置,该装置用于实现上述实施
例及优选实施方式,已经进行过说明的不再赘述。如以下所使用的,术语“模块”可以实现预定功能的软件和/或硬件的组合。尽管以下实施例所描述的装置较佳地以软件来实现,但是硬件,或者软件和硬件的组合的实现也是可能并被构想的。
图5是根据本发明实施例的信息提取装置的结构框图,如图5所示,该装置包括:
接收模块52,配置为接收车联网中各个交通工具广播的传输信号;其中,传输信号为交通工具的第一指定信息通过符号扩展技术生成的传输信号;所述接收模块52可对应于接收天线,可以接收其他设备传输的无线信号等;
提取模块54,与上述接收模块52连接,配置为从接收到的传输信号中提取各个交通工具的第一指定信息。所述提取模块54可对应于解调器或具有解调功能的处理器、处理芯片或处理电路等可以从接收的传输信号中提取出所述第一指定信息。
通过上述装置,通过接收到的传输符号是交通工具的第一指定信息通过符号扩展技术生成的传输信号,即通过符号扩展技术对第一指定信息进行扩展,可以在出现碰撞混叠的情况下为接收端解调出各个交通工具的第一指定信息,因此,可以解决相关技术中车联网系统中车辆间的信号出现碰撞混叠后难以解调信息的问题从而能减少车联网通信的时延,并能用相同的时频资源支持更多的车辆间通信。
需要说明的是,由于没有中央控制器通知当前车联网(V2V)的网络信息,也没有中央控制器安排或协调各交通工具所使用的扩展序列或者正交资源池子的,所以交通工具是不知道周围有多少交通工具,也不知道各交通工具所使用的扩展序列和正交资源池的。所以交通工具可以通过盲测方法进行检测,在本发明的一个实施例中,上述提取模块54可以通过以下
至少之一方式从接收到的传输信号中提取各个交通工具的第一指定信息:基于串行干扰消除的多用户盲检测方法;基于并行干扰消除的多用户盲检测方法;基于混合干扰消除的多用户盲检测方法。
需要说明的是,上述第一指定信息可以包括以下至少之一信息:车况信息、驾驶员的操作信息、交通工具传感器所感知的信息和控制信令;其中,车况信息可以包括以下至少之一:交通工具标识、交通工具当前地理位置、交通工具的行驶速度、交通工具的大小、交通工具的颜色;操作信息可以包括以下至少之一:驾驶员对交通工具正在进行的操作,驾驶员准备对交通工具进行的操作。
上述传感器可以包括多种传感器,比如图像传感器,但并不限于此,比如,一辆大卡车挡住了后面的小车,则大卡车把它摄像头摄得的影像传给后面的小车,其就是图像传感器感知的信息,但并不限于此。
需要说明的是,驾驶员对交通工具正在进行的操作可以包括以下至少之一:刹车、启动、加速、变道和转向;驾驶员准备对交通工具进行的操作可以包括以下至少之一:准备刹车、准备启动、准备加速、准备变道和准备转向。
需要说明的是,上述符号扩展技术中使用的扩展序列由第二指定信息确定,其中,第二指定信息由以下至少之一信息产生:第一指定信息和与交通工具广播传输信号相关的系统参数信息。具体如何根据第二指定信息确定的扩展序列可以参考实施例1中的描述,以及在确定扩展序列时所采用的扩展序列集合的描述也参考实施例1中的描述,此处不再赘述。
需要说明的是,上述第二指定信息可以是一个索引信息,但并不限于此。
需要说明的是,与交通工具广播传输信号相关的系统参数信息,即与本次传输相关的系统参数信息,可以包括以下至少之一:交通工具广播传
输信号的系统帧号;所述交通工具广播所述传输信号的频域位置信息。需要说明的是,这些参数信息是其他接收上述传输信号的交通工具的接收机所知道的,这样能够增加扩展序列的随机性,避免两个交通工具多次传输使用相同序列扩展的问题,进而可以提高可靠性。
在本发明的一个实施例中,上述接收模块52还可以配置为接收所述各个交通工具传输的第三指定信息。需要说明的是,第三指定信息为第一指定信息中的部分信息,比如可以是第一指定信息中优先级高的信息,比如交通工具当前地理位置、刹车、变道等信息,但并不限于此。即实际上上述第三指定信息可以是第一指定信息中的一些关键信息,通过将这些关键信息多传输一次,可以简化接收到上述传输信号的交通工具进行盲检的流程,并且能够提供盲检的可靠性。
需要说明的是,上述第三指定信息还可以是所述第一指定信息中的部分信息和所述第一指定信息生成的信息,但并不限于此。
需要说明的是,上述接收模块52还可以用于在第一时频资源上接收所述传输信号;在第二时频资源上的子资源池上接收所述第三指定信息;其中,所述子资源池是对所述第二时频资源通过正交划分方式划分得到的。
需要说明的是,上述正交划分方式可以包括以下至少之一:频域划分、时域划分、时频域划分、码域划分,但并不限于此。划分得到的各个子资源池之间可以是正交的。
需要说明的是,上述第一时频资源与上述第二时频资源之间可以存在一定的保护间隔,也可以不存在保护间隔,并不限于此。
在本发明的一个实施例中,上述正交资源池由第四指定信息确定;其中,第四指定信息为第二指定信息的部分或者全部信息。需要说明的是,上述第四指示信息可以是一个索引,但并不限于此。
需要说明的是,上述传输信号中还可以包括导频符号,但并不限于此。
该导频符号,可以用于接收到传输号的交通工具解调第一指定信息,但并不限于此。
需要说明的是,上述装置可以位于交通工具,比如汽车,自行车,电动车,踏板车,船,飞机,有轨列车等,但不限于此。
需要说明的是,上述各个模块是可以通过软件或硬件来实现的,对于后者,可以通过以下技术实现,但不限于此:上述模块均位于同一处理器中;或者,上述各个模块以任意组合的形式分别位于不同的处理器中。
实施例5
本发明实施例还提供了一种发射器,位于交通工具中,图6是根据本发明实施例提供的发射器的结构框图,如图6所示,包括:
生成器62,配置为将交通工具的第一指定信息通过符号扩展技术生成传输信号;
射频模块64,与生成器62连接,配置为在交通工具所在车联网的指定传输信道或第一时频资源上广播生成的传输信号。
通过上述发射器,通过符号扩展技术对第一指定信息进行扩展,进而可以在出现碰撞混叠的情况下为接收端解调出各个交通工具的信息提供了可能,因此,可以解决相关技术中车联网系统中车辆间的信号出现碰撞混叠后难以解调信息的问题,从而能减少车联网通信的时延,并能用相同的时频资源支持更多的车辆间通信。
在本发明的一个实施例中,上述发射器还包括:第一处理器,与上述发生器62连接,用于依据第二指定信息确定符号扩展技术中所使用的扩展序列;其中,第二指定信息由以下至少之一信息产生:第一指定信息和与交通工具广播传输信号相关的系统参数信息。
可选地,第一处理器还用于根据第二指定信息确定扩展序列的索引;以及根据索引从预先配置的扩展序列集合中选择与索引对应的扩展序列作
为符号扩展技术中所使用的扩展序列。
需要说明的是,上述第一处理器,还可以用于根据第二指定信息确定扩展序列的索引;根据索引从预先配置的扩展序列集合中选择与索引对应的扩展序列作为符号扩展技术中所使用的扩展序列。基于第二指定信息确定符号扩展技术中的扩展序列使得每次传输中,生成传输信号所使用的扩展序列不同。
需要说明的是,上述扩展序列集合中包含的扩展序列的元素越多,则使得不同交通工具选择的扩展序列是不同的几率就越小,并且对于同一交通工具在不同传输时所使用的扩展序列是不同的几率也越小,实现的技术效果就越好。对于上述扩展序列集合的解释参考实施例1中的描述,此处不再赘述。
需要说明的是,上述第二指定信息可以是一个索引信息,但并不限于此。
需要说明的是,上述第一指定信息可以包括以下至少之一信息:车况信息、驾驶员的操作信息、交通工具传感器所感知的信息和控制信令;其中,车况信息可以包括以下至少之一:交通工具标识、交通工具当前地理位置、交通工具的行驶速度、交通工具的大小、交通工具的颜色;操作信息可以包括以下至少之一:驾驶员对交通工具正在进行的操作,驾驶员准备对交通工具进行的操作。
需要说明的是,驾驶员对交通工具正在进行的操作可以包括以下至少之一:刹车、启动、加速、变道和转向;驾驶员准备对交通工具进行的操作可以包括以下至少之一:准备刹车、准备启动、准备加速、准备变道和准备转向。
需要说明的是,与交通工具广播传输信号相关的系统参数信息,即与本次传输相关的系统参数信息,可以包括以下至少之一:交通工具广播传
输信号的系统帧号;所述交通工具广播所述传输信号的频域位置信息。需要说明的是,这些参数信息是其他接收上述传输信号的交通工具的接收机所知道的,这样能够增加扩展序列的随机性,避免两个交通工具多次传输使用相同序列扩展的问题,进而可以提高可靠性。
在本发明的一个实施例中,上述发射器还可以包括:第二处理器,与上述射频模块64连接,用于确定用于传输第三指定信息的第二时频资源上的子资源池;其中,所述子资源池是对所述第二时频资源通过正交划分方式划分得到的;射频模块64,还用于在确定的所述子资源池上传输所述第三指定信息。
需要说明的是,上述正交划分方式可以包括以下至少之一:频域划分、时域划分、时频域划分、码域划分,但并不限于此。划分得到的各个子资源池之间可以是正交的。
需要说明的是,上述第一时频资源与上述第二时频资源之间可以存在一定的保护间隔,也可以不存在保护间隔,并不限于此。
需要说明的是,第三指定信息为第一指定信息中的部分信息,比如可以是第一指定信息中优先级高的信息,比如交通工具当前地理位置、刹车、变道等信息,但并不限于此。即实际上上述第三指定信息可以是第一指定信息中的一些关键信息,通过将这些关键信息多传输一次,可以简化接收到上述传输信号的交通工具进行盲检的流程,并且能够提供盲检的可靠性。需要说明的是,上述第三指定信息还可以是所述第一指定信息中的部分信息和所述第一指定信息生成的信息,但并不限于此。
需要说明的是,在所述第一时频资源上广播所述传输信号之前应用的载波调制技术中所采用的参数与在所述子资源池上发送所述第三指定信息之前应用的载波调制技术中所采用的参数相同或者不同。
需要说明的是,上述参数可以包括:子载波间隔和循环前缀CP长度。
需要说明的是,上述第二处理器,还可以用于根据第四指定信息确定所述子资源池的索引;将所述第二时频资源上子资源池的索引为确定的所述索引的子资源池作为用于传输所述第三指定信息的子资源池;其中,第四指定信息为第二指定信息的部分或者全部信息;其中,第二指定信息用于确定符号扩展技术中所使用的扩展序列。
需要说明的是,上述第四指示信息可以是一个索引,但并不限于此。
需要说明的是,上述传输信号中还可以包括导频符号,但并不限于此,需要说明的是,上述导频符号可以用于接收到所述传输号的交通工具解调上述第一指定信息,但并不限于此。。
需要说明的是,上述第一处理器和上述第二处理器可以是同一个处理器,也可以是不同的处理器,但并不限于此。
需要说明的是,上述发射器可以位于交通工具,比如汽车,自行车,电动车,踏板车,船,飞机,有轨列车等,但不限于此。
实施例6
本发明实施例还提供了一种车载设备,该车载设备包括:接收器,位于交通工具中,图7是根据本发明实施例提供的接收器的结构框图,如图7所示,该接收器包括:
传输装置72,配置为接收车联网中各个交通工具广播的传输信号;其中,传输信号为交通工具的第一指定信息通过符号扩展技术生成的传输信号;
处理器74,与上述传输装置72连接,配置为从接收到的传输信号中提取各个交通工具的第一指定信息。
所述传输装置72至少可包括:发送接收天线,可以接收其他设备发送的无线信号。
通过上述接收器,通过接收到的传输符号是交通工具的第一指定信息
通过符号扩展技术生成的传输信号,即通过符号扩展技术对第一指定信息进行扩展,可以在出现碰撞混叠的情况下为接收端解调出各个交通工具的第一指定信息,因此,可以解决相关技术中车联网系统中车辆间的信号出现碰撞混叠后难以解调信息的问题从而能减少车联网通信的时延,并能用相同的时频资源支持更多的车辆间通信。
需要说明的是,由于没有中央控制器通知当前车联网(V2V)的网络信息,也没有中央控制器安排或协调各交通工具所使用的扩展序列或者正交资源池子的,所以交通工具是不知道周围有多少交通工具,也不知道各交通工具所使用的扩展序列和正交资源池的。所以交通工具可以通过盲测方法进行检测,在本发明的一个实施例中,上述处理器74可以通过以下至少之一技术从接收到的传输信号中提取各个交通工具的第一指定信息:基于串行干扰消除的多用户盲检测方法;基于并行干扰消除的多用户盲检测方法;基于混合干扰消除的多用户盲检测方法。
需要说明的是,上述第一指定信息可以包括以下至少之一信息:车况信息、驾驶员的操作信息、交通工具传感器所感知的信息和控制信令;其中,车况信息可以包括以下至少之一:交通工具标识、交通工具当前地理位置、交通工具的行驶速度、交通工具的大小、交通工具的颜色;操作信息可以包括以下至少之一:驾驶员对交通工具正在进行的操作,驾驶员准备对交通工具进行的操作。
上述传感器可以包括多种传感器,比如图像传感器,但并不限于此,比如,一辆大卡车挡住了后面的小车,则大卡车把它摄像头摄得的影像传给后面的小车,其就是图像传感器感知的信息,但并不限于此。
需要说明的是,驾驶员对交通工具正在进行的操作可以包括以下至少之一:刹车、启动、加速、变道和转向;驾驶员准备对交通工具进行的操作可以包括以下至少之一:准备刹车、准备启动、准备加速、准备变道和
准备转向。
需要说明的是,上述符号扩展技术中使用的扩展序列由第二指定信息确定,其中,第二指定信息由以下至少之一信息产生:第一指定信息和与交通工具广播传输信号相关的系统参数信息。具体如何根据第二指定信息确定的扩展序列可以参考实施例1中的描述,以及在确定扩展序列时所采用的扩展序列集合的描述也参考实施例1中的描述,此处不再赘述。
需要说明的是,上述第二指定信息可以是一个索引信息,但并不限于此。
需要说明的是,与交通工具广播传输信号相关的系统参数信息,即与本次传输相关的系统参数信息,可以包括以下至少之一:交通工具广播传输信号的系统帧号;所述交通工具广播所述传输信号的频域位置信息。需要说明的是,这些参数信息是其他接收上述传输信号的交通工具的接收机所知道的,这样能够增加扩展序列的随机性,避免两个交通工具多次传输使用相同序列扩展的问题,进而可以提高可靠性。
在本发明的一个实施例中,上述传输装置72还可以配置为接收所述各个交通工具传输的第三指定信息。需要说明的是,第三指定信息为第一指定信息中的部分信息,比如可以是第一指定信息中优先级高的信息,比如交通工具当前地理位置、刹车、变道等信息,但并不限于此。即实际上上述第三指定信息可以是第一指定信息中的一些关键信息,通过将这些关键信息多传输一次,可以简化接收到上述传输信号的交通工具进行盲检的流程,并且能够提供盲检的可靠性。需要说明的是,上述第三指定信息还可以是所述第一指定信息中的部分信息和所述第一指定信息生成的信息,但并不限于此。
需要说明的是,上述传输模块72还可以配置为在第一时频资源上接收所述传输信号;在第二时频资源上的子资源池上接收所述第三指定信息;
其中,所述子资源池是对所述第二时频资源通过正交划分方式划分得到的。
需要说明的是,上述正交划分方式可以包括以下至少之一:频域划分、时域划分、时频域划分、码域划分,但并不限于此。划分得到的各个子资源池之间可以是正交的。
需要说明的是,上述第一时频资源与上述第二时频资源之间可以存在一定的保护间隔,也可以不存在保护间隔,并不限于此。
在本发明的一个实施例中,上述正交资源池由第四指定信息确定;其中,第四指定信息为第二指定信息的部分或者全部信息。需要说明的是,上述第四指示信息可以是一个索引,但并不限于此。
需要说明的是,上述传输信号中还可以包括导频符号,但并不限于此。该导频符号,可以用于接收到传输号的交通工具解调第一指定信息,但并不限于此。
需要说明的是,上述接收器可以位于交通工具,比如汽车,自行车,电动车,踏板车,船,飞机,有轨列车等,但不限于此。
本发明实施例,还提供了一种交通工具,其中,包括:上述的发射器和上述的接收器。
实施例7
本发明的实施例还提供了一种存储介质。可选地,在本实施例中,上述存储介质存储有计算机程序等计算机可执行代码,所述计算机可执行代码被执行后,能够实现前述一个或多个技术方案提供的信号发送方法或信息提取方法。所述计算机存储介质可为各种类型的存储介质,可选为非瞬间存储介质。
例如,所述存储介质可以被设置为存储用于执行实施例1或实施例2步骤的程序代码。
可选地,在本实施例中,上述存储介质可以包括但不限于:U盘、只
读存储器(ROM,Read-Only Memory)、随机存取存储器(RAM,Random Access Memory)、移动硬盘、磁碟或者光盘等各种可以存储程序代码的介质。
可选地,在本实施例中,处理器根据存储介质中已存储的程序代码执行实施例1或实施例2中的方法的步骤。
可选地,在本实施例中,处理器根据存储介质中已存储的程序代码执行…
可选地,本实施例中的具体示例可以参考上述实施例及可选实施方式中所描述的示例,本实施例在此不再赘述。
为了更好的理解本发明,以下结合优选的实施例对本发明做进一步解释。
本发明可选实施例提供了一种基于符号扩展技术和盲检接收技术的通信方法,其中,符号扩展技术中的序列扩展过程如下:发射机用一定长度的扩展序列(如,长度为N的扩展序列,是指这个扩展序列由N个符号构成,也可以说是由N个元素构成,此处的N个符号/N个元素可以是L个数字符号)对调制后的数据符号进行扩展。扩展过程是指每个已调制的数据符号与扩展序列的每个符号相乘,最终形成与所用扩展序列长度相同的符号序列的过程,图8是更具本发明可选实施例提供的符号扩展技术的示意图,如图8所示,数据符号为Sk,可以是采用BPSK/QAM调制后的星座点符号,或者OFDM载波调制后的符号,一个N长的扩展序列C={c1,c2,……cN},所述的扩展处理就是将Sk与扩展序列C中的每个元素相乘,最终得到扩展后的序列{Skc1,Skc2,……SkcN}。具体公式可以表示为
本发明可选实施例提供的一种交通工具间通信(V2V)的信息生成和
传输方法和装置,发射机,接收机,图9是根据本发明可选实施例提供的场景的示意图,每个交通工具搭载的“收发机”(通过其他途径同步后),会将自己的信息通过扩展技术扩展后,在特定的时频资源广播出去,同时会在特定的时频资源接收解调周边交通工具的广播信息,并利用这些信息协助驾驶(人工驾驶或者自动驾驶),以下以车辆为例进行说明。
图10是根据本发明可选实施例提供的信息生成和传输方法的流程示意图,针对发射机,包括:车载发射机将车辆信息S(相当于上述实施例中的第一指定信息)通过符号扩展生成传输信号,在特定的传输信道或特定的时频资源上广播出去。需要说明的是,特定的传输信道或特定的时频资源可以为图10所示的第一时频资源区域(相当于上述实施例中的交通工具所在车联网的指定传输信道或可用时频资源)。
车载发射机将车辆信息S生成广播信号的过程中包括了扩展过程,扩展所使用的扩展序列由Sc信息(相当于上述实施例中的第二指定信息)决定。而Sc由所述车辆信息S产生;或者由所述车辆信息S和本次传输相关的系统参数信息T共同产生。
可选地,本次传输的信息S中的部分信息S2(相当于上述实施例中的第三指定信息),在包含若干个正交的子资源池子的第二时频资源区域(相当于上述实施例中的与确定的正交资源池对应的时频资源)上传输,选择哪个子正交资源池子,即正交资源池子的索引,又是由决定上述扩展序列的信息Sc决定。
需要说明的是,车辆信息包含车况信息和/或司机操作信息;
上述车况信息包含{车牌,车辆当前地理位置,速度,大小,颜色}信息集合中的一个或多个信息。
上述司机操作信息包含当前操作和/或预测操作,当前操作包含{刹车,加速,变道,转向}信息集合中的一个或多个信息,预测操作包含{准备刹
车,准备加速,准备变道,准备转向}信息集合中的一个或多个信息。
需要说明的是,本次传输相关的系统信息必须是其他交通工具中的接收机知道的,例如本次传输的帧号或系统帧号(Frame Number/System Frame Number SFN),这样可以增加扩展序列的随机性,避免两个用户多次传输都使用了相同序列扩展,这样可以提高可靠性。
需要说明的是,上述扩展序列通常是取自一个扩展序列集合,所使用扩展序列在集合中的索引值Index由Sc信息决定。选择哪个子正交资源池子(正交资源池子的索引Index2)也是由决定上述扩展序列的信息Sc决定。
需要说明的是,在上述图10所示的流程中,扩展和载波调制先后可以互换。
在生成广播信号的过程中插入导频符号以有利接收机接收解调车辆信息,比如可以在图10所示的P1、P2、P3和P4处增加插入导频的过程。图11示出了应用了数据前导方案后的信息生成和传输方法的示意图。
针对接收机:
车载接收机在特定广播传输信道里接收周围交通工具(车辆)的广播信号,通过先进的多用户检测方法,提取各个交通工具的车辆信息,应用这些车辆信息辅助驾驶(人工驾驶或自动驾驶)。
由于没有中央控制器通知当前车联网(V2V)的网络信息的,也没有中央控制器安排或协调各交通工具所使用的扩展序列或者正交子池子的,所以车载接收机是不知道周围有多少辆车,也不知道各车所使用的扩展序列和正交子池子的。所以车载接收机需要应用先进的信号检测方法,通常可以应用基于串行干扰消除的多用户检测方法。
基于串行干扰消除多用户检测方法,每次迭代需要有一个“遍历”扩展序列集合的所有扩展序列以及遍历所有正交子池子的过程,以找出当前迭代中信号最强的哪些车辆的信息。然后将当前最前的车辆信息解调出来,
利用车辆信息得到精确地扩展序列信息和正交子池子信息,进一步可以重构车辆的广播信息,然后利用重构的广播信息,作为已知信号,做信道估计。然后加权估计所得的信道。最后从接收的广播信号中,减去此加权信道后的广播信息。然后进入下一次迭代。
可选实施例1
在车辆的发射侧,所采用的扩展序列、车辆信息等信息如表1所示,
表1
在车辆的接收侧:
车载接收机在特定广播传输信道里接收周围交通工具(车辆)的广播信号,通过先进的多用户检测方法,提取各个交通工具的车辆信息,应用这些车辆信息辅助驾驶(人工驾驶或自动驾驶)。
由于没有中央控制器通知当前车联网(V2V)的网络信息的,也没有中央控制器安排或协调各交通工具所使用的扩展序列,所以车载接收机是不知道周围有多少辆车,也不知道各车所使用的扩展序列的。所以车载接收机需要应可以应用基于串行干扰消除的多用户检测方法,进行第一指定信息的提取。
基于串行干扰消除多用户检测方法,每次迭代需要有一个“遍历”扩展序列集合的所有扩展序列过程,以找出当前迭代中信号最强的哪些车辆的信息。然后将当前最前的车辆信息解调出来,利用车辆信息得到精确地扩展序列信息,进一步可以重构车辆的广播信息,然后利用重构的广播信息,作为已知信号,做信道估计。然后加权估计所得的信道。最后从接收的广播信号中,减去此加权信道后的广播信息。然后进入下一次迭代。
可选实施例2
在车辆的发射侧,在第一时频资源区域,所采用的扩展序列、车辆信息等信息如表2所示,
表2
在车辆的发射侧,在第二时频资源区域,所采用的扩展序列、车辆信息等信息如表3所示,
表3
在车辆的接收侧:
车载接收机在特定广播传输信道里接收周围交通工具(车辆)的广播信号,通过先进的多用户检测方法,提取各个交通工具的车辆信息,应用这些车辆信息辅助驾驶(人工驾驶或自动驾驶)。
由于没有中央控制器通知当前车联网(V2V)的网络信息的,也没有中央控制器安排或协调各交通工具所使用正交子池子和扩展序列的,所以车载接收机是不知道周围有多少辆车,也不知道各车所使用的正交子池子和扩展序列。所以车载接收机需要应用先进的信号检测方法,通常可以应用基于串行干扰消除的多用户检测方法。
基于串行干扰消除多用户检测方法,每次迭代需要有一个“遍历”正交子池子的和扩展序列集合的所有扩展序列的过程,而为了简化遍历过程的复杂度,通常可以先遍历数量更少的正交子池子,以找出当前迭代中信号最强的哪些车辆的信息。然后将当前最前的车辆信息解调出来,利用车辆信息得到精确地扩展序列信息和正交子池子信息,进一步可以重构车辆的广播信息,然后利用重构的广播信息,作为已知信号,做信道估计。然后加权估计所得的信道。最后从接收的广播信号中,减去此加权信道后的广播信息。然后进入下一次迭代。
显然,本领域的技术人员应该明白,上述的本发明的各模块或各步骤可以用通用的计算装置来实现,它们可以集中在单个的计算装置上,或者分布在多个计算装置所组成的网络上,可选地,它们可以用计算装置可执行的程序代码来实现,从而,可以将它们存储在存储装置中由计算装置来执行,并且在某些情况下,可以以不同于此处的顺序执行所示出或描述的步骤,或者将它们分别制作成各个集成电路模块,或者将它们中的多个模块或步骤制作成单个集成电路模块来实现。这样,本发明不限制于任何特定的硬件和软件结合。
以上所述仅为本发明的可选实施例而已,并不用于限制本发明,对于本领域的技术人员来说,凡按照本发明原理所作的修改,都应当理解为落入本发明的保护范围。
本发明实施例中V2V通信时,发送端利用符号扩展技术生成传输信号,并将传输信号承载在指定传输信道或第一时频资源上广播。这样的话,接收端接收到广播信号之后,可以基于符号扩展技术进行干扰消除等方式,从而使得即便使得不同的车载设备的传输符号碰撞依然可以被正确解调出来,从而解决了碰撞导致的传输质量差的问题,具有积极的工业效果。且在实现时,发送端通过符号扩展技术生成传输符号即可,而接收端基于扩展符号技术进行干扰消除即可,具有实现简便可在工业上大规模广泛运用的特点。
Claims (41)
- 一种信号发送方法,包括:将交通工具的第一指定信息通过符号扩展技术生成传输信号;在所述交通工具所在车联网的指定传输信道或第一时频资源上广播生成的所述传输信号。
- 根据权利要求1所述的方法,其中,在将交通工具中的第一指定信息通过符号扩展技术生成传输信号之前,所述方法包括:依据第二指定信息确定所述符号扩展技术中所使用的扩展序列;其中,所述第二指定信息由以下至少之一信息产生:所述第一指定信息和与所述交通工具广播所述传输信号相关的系统参数信息。
- 根据权利要求2所述的方法,其中,依据第二指定信息确定所述符号扩展技术中所使用的扩展序列包括:根据所述第二指定信息确定扩展序列的索引;根据所述索引从预先配置的扩展序列集合中选择与所述索引对应的扩展序列作为所述符号扩展技术中所使用的扩展序列。
- 根据权利要求3所述的方法,其中,所述扩展序列集合中的扩展序列的元素取自以下集合至少之一:{1,1i,-1,-1i};{1,-1};{1i,-1i};{1};{-1};{1i};{-1i};{1+1i,-1+1i,-1-1i,1-1i};{0};{1,1i,-1,-1i,0};{1+1i,-1+1i,-1-1i,1-1i,0};{1,1i,-1,-1i,2,2i,-2,-2i,0};其中,i=sqrt(-1),sqrt()为平方根函数。
- 根据权利要求3所述的方法,其中,所述扩展序列集合中的扩展序列为基于第一扩展序列集合中的扩展序列和第二扩展序列集合中的扩展序列通过序列点乘运算生成的,或者为将所述第二扩展序列集合中扩展序列中的非零元素所在位置的元素替换为由所述非零元素组成的第一指定序列 与所述第一扩展序列集合中与所述第一指定序列的序列长度相等的扩展序列进行点乘运算生成的第二指定序列的元素后得到的扩展序列。
- 根据权利要求5所述的方法,其中,所述第一扩展序列集合包括下述扩展序列集合,以及由下述扩展序列集合经过处理后形成的扩展序列集合,至少之一;其中,对下述扩展序列集合处理,包括:将下述扩展序列集合中的每条扩展序列或每条扩展序列的第X个序列元素乘以1、1i、-1、或-1i,或者乘以1i的A次方;或者,对下述扩展序列集合中的每条扩展序列或每条扩展序列的第X个序列元素进行W×π的相位调整或旋转,或者乘以exp(j×W×π),其中,j=sqrt(-1);或者,对下述扩展序列集合中的每条扩展序列或每条扩展序列的第X个序列元素乘以指定值,或者分别乘以指定值;其中,X为大于或等于1且小于或等于扩展序列长度的整数,A为整数,W为实数;其中,第一扩展序列集合,包括下述扩展序列集合至少之一:扩展序列集合1:所述扩展序列集合1:包含4条长度为4的扩展序列,其中,第一扩展序列为[1,1,1,1],第二扩展序列为[1,1,1i,-1i],第三扩展序列为[1,1i,1,-1i],第四扩展序列为[1,1i,1i,-1];扩展序列集合2:所述扩展序列集合2,包含4条长度为4的扩展序列,其中,第一扩展序列为[1,1,1,-1],第二扩展序列为[1,1,1i,1i],第三扩展序列为[1,1i,1,1i],第四扩展序列为[1,1i,1i,1];扩展序列集合3:所述扩展序列集合3,包含4条长度为4的扩展序列,其中,第一扩展序列为[1,1,1,1i],第二扩展序列为[1,1,1i,1],第三扩展序列为[1,1i,1,1],第四扩展序列为[1,1i,1i,-1i];扩展序列集合4:所述扩展序列集合4,包含4条长度为4的扩展序列,其中,第一扩展序列为[1,1,1,-1i],第二扩展序列为[1,1,1i,-1],第三扩展序列为[1,1i,1,-1],第四扩展序列为[1,1i,1i,1i];扩展序列集合5:所述扩展序列集合5,包含1条长度为2的扩展序列,其中,第一扩展序列为[1,1];扩展序列集合6:所述扩展序列集合6,包含1条长度为2的扩展序列,其中,第一扩展序列为[1,-1];扩展序列集合7:所述扩展序列集合7,包含1条长度为2的序列,其中,第一序列为[1,1i];扩展序列集合8:所述扩展序列集合8,包含1条长度为2的扩展序列,其中,第一序列为[1,-1i];扩展序列集合9:所述扩展序列集合9,包含4条长度为1的扩展序列,其中,第一扩展序列为[1],第二扩展序列为[1i],第三扩展序列为[-1],第四扩展序列为[-1i];扩展序列集合10:所述扩展序列集合10,包含4条长度为1的扩展序列,其中,第一扩展序列为[1+1i],第二扩展序列为[-1+1i],第三扩展序列为[-1-1i],第四扩展序列为[1-1i];扩展序列集合11:所述扩展序列集合11,包含2条长度为1的扩展序列,其中,第一扩展序列为[1],第二扩展序列为[-1];扩展序列集合12:所述扩展序列集合12,包含2条长度为1的扩展序列,其中,第一扩展序列为[1i],第二扩展序列为[-1i];扩展序列集合13:所述扩展序列集合13,包含1条长度为1的扩展序列,其中,第一扩展序列为[1];扩展序列集合14:所述扩展序列集合14,包含1条长度为1的扩展序列,其中,第一扩展序列为[-1];扩展序列集合15:所述扩展序列集合15,包含1条长度为1的扩展序列,其中,第一扩展序列为[1i];扩展序列集合16:所述扩展序列集合16,包含1条长度为1的扩展序列,其中,第一扩展序列为[-1i];扩展序列集合17:所述扩展序列集合17,包含4条长度为3的扩展序列,其中,第一扩展序列为[1,1,1];第二扩展序列为[1,-1,-1],第三扩展序列为[-1,1,-1],第四扩展序列为[-1,1,1];其中,i为虚数单位,i=sqrt(-1)。
- 根据权利要求5所述的方法,其中,所述第二扩展序列集合包括以下至少之一:哈达玛序列集合;沃尔什序列集合;离散傅里叶变换序列集合;包含指定数量或指定比例的0元素的序列的集合;单位矩阵序列集合;所述第二扩展序列集合中每条扩展序列的长度与所述第一扩展序列集合中每条扩展序列的长度相同。
- 根据权利要求5所述的方法,其中,所述第二扩展序列集合包括下述扩展序列集合,以及由下述扩展序列集合经过处理后形成的扩展序列集 合,至少之一;其中,对下述扩展序列集合处理,包括:对下述扩展序列集合中的每条扩展序列或每条扩展序列的第X个序列元素乘以1、1i、-1、或-1i,或者乘以1i的A次方;或者,对下述扩展序列集合中的每条扩展序列或每条扩展序列的第X个序列元素进行W×π的相位调整或旋转,或者乘以exp(j×W×π),j=sqrt(-1);或者,对下述扩展序列集合中的每条扩展序列或每条扩展序列的第X个序列元素乘以指定值,或者分别乘以指定值;其中,X为大于或等于1且小于或等于序列长度的整数,A为整数,W为实数;其中,扩展序列集合1:所述扩展序列集合1,包含4条长度为4的扩展序列,其中,第一扩展序列为[1,1,1,1],第二扩展序列为[1,1,-1,-1],第三扩展序列为[1,-1,1,-1],第四扩展序列为[1,-1,-1,1];扩展序列集合2:所述扩展序列集合2,包含4条长度为4的扩展序列,其中,第一扩展序列为[1,1,1,1],第二扩展序列为[1,1i,-1,-1i],第三扩展序列为[1,-1,1,-1],第四扩展序列为[1,-1i,-1,1i];扩展序列集合3:所述扩展序列集合3,包含2条长度为2的扩展序列,其中,第一扩展序列为[1,1],第二扩展序列为[1,-1];扩展序列集合4:所述扩展序列集合4,包含1条长度为1的扩展序列,其中,第一扩展序列为[1];扩展序列集合5:所述扩展序列集合5,包含6条长度为4的扩展序列,其中,第一扩展序列为[1,1,0,0],第二扩展序列为[1,0,1,0],第三扩展序列为[1,0,0,1],第四扩展序列为[0,1,1,0],第五扩展序列为[0,1,0,1],第六扩展序列为[0,0,1,1];扩展序列集合6:所述扩展序列集合6,包含4条长度为6的扩展序列,其中,第一扩展序列为[1,1,1,0,0,0],第二扩展序列为[1,0,0,1,1,0],第三扩展序列为[0,1,0,0,1,1],第四扩展序列为[0,0,1,1,0,1],扩展序列集合7:所述扩展序列集合7,包含4条长度为6的扩展序列,其中,第一扩展序列为[1,0,1,0,1,0],第二扩展序列为[1,0,0,1,0,1],第三扩展序列为[0,1,1,0,0,1],第四扩展序列为[0,1,0,1,1,0],扩展序列集合8:所述扩展序列集合8,包含4条长度为4的扩展序列,其中,第一扩展序列为[1,0,0,0],第二扩展序列为[0,1,0,0],第三扩展序列为[0,0,1,0],第四扩展序列为[0,0,0,1];扩展序列集合9:所述扩展序列集合9,包含6条长度为6的扩展序列,其中,第一扩展序列为[+1+1+1+1+1+1],第二扩展序列为[+1+1+i-1-1-i],第三扩展序列为[+1+i-i+i-i-1],第四扩展序列为[+1-1+1-i-1+i],第五扩展序列为[+1-1-1+1+i-i],第六扩展序列为[+1-i-1-1+1+i];其中,i为虚数单位,i=sqrt(-1)。
- 根据权利要求5所述的方法,其中,所述扩展序列集合包括下述扩展序列集合,以及由下述扩展序列集合经过处理后形成的扩展序列集合,至少之一;其中,对下述扩展序列集合进行处理包括:对下述扩展序列集合中的每条扩展序列或每条扩展序列的第X个序列元素乘以1、1i、-1、或-1i,或者乘以1i的A次方;或者,对下述扩展序列集合中的每条扩展序列或每条扩展序列的第X个序列元素进行W×π的相位调整或旋转,或者乘以exp(j×W×π),j为虚数单位,j=sqrt(-1);或者,对下述扩展序列集合中的每条扩展序列或每条扩展序列的第X个序列 元素乘以指定值,或者分别乘以指定值;其中,X为大于或等于1且小于或等于序列长度的整数,A为整数,W为实数;其中,扩展序列集合1:所述扩展序列集合1,包含16条长度为4的扩展序列,其中,第一扩展序列为[1,1,1,1],第二扩展序列为[1,1,-1,-1],第三扩展序列为[1,-1,1,-1],第四扩展序列为[1,-1,-1,1],第五扩展序列为[1,1,1i,-1i],第六扩展序列为[1,1,-1i,1i],第七扩展序列为[1,-1,1i,1i],第八扩展序列为[1,-1,-1i,-1i],第九扩展序列为[1,1i,1,-1i],第十扩展序列为[1,1i,-1,1i],第十一扩展序列为[1,-1i,1,1i],第十二扩展序列为[1,-1i,-1,-1i],第十三扩展序列为[1,1i,1i,-1],第十四扩展序列为[1,1i,-1i,1],第十五扩展序列为[1,-1i,1i,1],第十六扩展序列为[1,-1i,-1i,-1];扩展序列集合2:所述扩展序列集合2,包含16条长度为4的扩展序列,其中,第一扩展序列为[1,1,1,-1],第二扩展序列为[1,1,-1,1],第三扩展序列为[1,-1,1,1],第四扩展序列为[1,-1,-1,-1],第五扩展序列为[1,1,1i,1i],第六扩展序列为[1,1,-1i,-1i],第七扩展序列为[1,-1,1i,-1i],第八扩展序列为[1,-1,-1i,1i],第九扩展序列为[1,1i,1,1i],第十扩展序列为[1,1i,-1,-1i],第十一扩展序列为[1,-1i,1,-1i],第十二扩展序列为[1,-1i,-1,1i],第十三扩展序列为[1,1i,1i,1],第十四扩展序列为[1,1i,-1i,-1],第十五扩展序列为[1,-1i,1i,-1],第十六扩展序列为[1,-1i,-1i,1];扩展序列集合3:所述扩展序列集合3,包含16条长度为4的扩展序列,其中,第一扩展序列为[1,1,1,1i],第二扩展序列为[1,1,-1,-1i],第三扩展序列为[1,-1,1,-1i],第四扩展序列为[1,-1,-1,1i],第五扩展序列为[1,1,1i,1],第六扩展序列为[1,1,-1i,-1],第七扩展序列为[1,-1,1i,-1],第八扩展序列为[1,-1,-1i,1],第九扩展序列为[1,1i,1,1],第十扩展序列为[1,1i,-1,-1],第十一扩展序列为[1,-1i,1,-1],第十二扩展序列为[1,-1i,-1,1],第十三扩展序列为[1,1i,1i,-1i],第十四扩展序列为[1,1i,-1i,1i],第十五扩展序列为[1,-1i,1i,1i],第十六扩展序列为[1,-1i,-1i,-1i];扩展序列集合4:所述扩展序列集合4,包含16条长度为4的扩展序列,其中,第一扩展序列为[1,1,1,-1i],第二扩展序列为[1,1,-1,1i],第三扩展序列为[1,-1,1,1i],第四扩展序列为[1,-1,-1,-1i],第五扩展序列为[1,1,1i,-1],第六扩展序列为[1,1,-1i,1],第七扩展序列为[1,-1,1i,1],第八扩展序列为[1,-1,-1i,-1],第九扩展序列为[1,1i,1,-1],第十扩展序列为[1,1i,-1,1],第十一扩展序列为[1,-1i,1,1],第十二扩展序列为[1,-1i,-1,-1],第十三扩展序列为[1,1i,1i,1i],第十四扩展序列为[1,1i,-1i,-1i],第十五扩展序列为[1,-1i,1i,-1i],第十六扩展序列为[1,-1i,-1i,1i];扩展序列集合5:所述扩展序列集合5,包含32条长度为4的扩展序列,其中,第一扩展序列为[1,1,1,1],第二扩展序列为[1,1i,-1,-1i],第三扩展序列为[1,-1,1,-1],第四扩展序列为[1,-1i,-1,1i],第五扩展序列为[1,1,1i,-1i],第六扩展序列为[1,1i,-1i,-1],第七扩展序列为[1,-1,1i,1i],第八扩展序列为[1,-1i,-1i,1],第九扩展序列为[1,1i,1,-1i],第十扩展序列为[1,-1,-1,-1],第十一扩展序列为[1,-1i,1,1i],第十二扩展序列为[1,1,-1,1],第十三扩展序列为[1,1i,1i,-1],第十四扩展序列为[1,-1,-1i,1i],第十五扩展序列为[1,-1i,1i,1],第十六扩展序列为[1,1,-1i,-1i],第十七扩展序列为[1,1,1,-1],第十八扩展序列为[1,1i,-1,1i],第十九扩展序列为[1,-1,1,1],第二十扩展序列为[1,-1i,-1,-1i],第二十一扩展序列为[1,1,1i,1i],第二十二扩展序列为[1,1i,-1i,1],第二十三扩展序列为[1,-1,1i,-1i],第二十四扩展序列为[1,-1i,-1i,-1],第二十五扩展序列为[1,1i,1,1i],第二十六扩展序列为[1,-1,-1,1],第二十七扩展序列为[1,-1i,1,-1i],第二十八扩展序列为[1,1,-1,-1],第二十九扩展序列为[1,1i,1i,1],第三十扩展序列为[1,-1,-1i,-1i],第三十一扩展序列为[1,-1i,1i,-1],第三十二扩展序列为[1,1,-1i,1i];扩展序列集合6:所述扩展序列集合6,包含32条长度为4的扩展序列,其中,第一扩展序列为[1,1,1,1i],第二扩展序列为[1,1i,-1,1],第三扩展序列为[1,-1,1,-1i],第四扩展序列为[1,-1i,-1,-1],第五扩展序列为[1,1,1i,1],第六扩展序列为[1,1i,-1i,-1i],第七扩展序列为[1,-1,1i,-1],第八扩展序列为[1,-1i,-1i,1i],第九扩展序列为[1,1i,1,1],第十扩展序列为[1,-1,-1,-1i],第十一扩展序列为[1,-1i,1,-1],第十二扩展序列为[1,1,-1,i],第十三扩展序列为[1,1i,1i,-1i],第十四扩展序列为[1,-1,-1i,-1],第十五扩展序列为[1,-1i,1i,i],第十六扩展序列为[1,1,-1i,1],第十七扩展序列为[1,1,1,-1i],第十八扩展序列为[1,1i,-1,-1],第十九扩展序列为[1,-1,1,1i],第二十扩展序列为[1,-1i,-1,1],第二十一扩展序列为[1,1,1i,-1],第二十二扩展序列为[1,1i,-1i,1i],第二十三扩展序列为[1,-1,1i,1],第二十四扩展序列为[1,-1i,-1i,-1i],第二十五扩展序列为[1,1i,1,-1],第二十六扩展序列为[1,-1,-1,1i],第二十七扩展序列为[1,-1i,1,1],第二十八扩展序列为[1,1,-1,-1i],第二十九扩展序列为[1,1i,1i,1i],第三十扩展序列为[1,-1,-1i,1],第三十一扩展序列为[1,-1i,1i,-1i],第三十二扩展序列为[1,1,-1i,-1];扩展序列集合7:所述扩展序列集合7,包含4条长度为4的扩展序列,其中,第一扩展序列为[1,0,0,0],第二扩展序列为[0,1,0,0],第三扩展序列为[0,0,1,0],第四扩展序列为[0,0,0,1];扩展序列集合8:所述扩展序列集合8,包含16条长度为6的扩展序列,其中,第一扩展序列为[1,0,1,0,1,0],第二扩展序列为[-1,0,1,0,-1,0],第三扩展序列为[1,0,-1,0,-1,0],第四扩展序列为[-1,0,-1,0,1,0],第五扩展序列为[1,0,0,1,0,1],第六扩展序列为[-1,0,0,1,0,-1],第七扩展序列为[1,0,0,-1,0,-1],第八扩展序列为[-1,0,0,-1,0,1],第九扩展序列为[0,1,1,0,0,1],第十扩展序列为[0,-1,1,0,0,-1],第十一扩展序列为[0,1,-1,0,0,-1],第十二扩展序列为[0,-1,-1,0,0,1],第十三扩展序列为[0,1,0,1,1,0],第十四扩展序列为[0,-1,0,1,-1,0],第十五扩展序列为[0,1,0,-1,-1,0],第十六扩展序列为[0,-1,0,-1,1,0];扩展序列集合9:所述扩展序列集合9,包含16条长度为6的扩展序列,其中,第一扩展序列为[1,1,1,0,0,0],第二扩展序列为[-1,1,-1,0,0,0],第三扩展序列为[1,-1,-1,0,0,0],第四扩展序列为[-1,-1,1,0,0,0],第五扩展序列为[0,0,1,1,1,0],第六扩展序列为[0,0,-1,-1,1,0],第七扩展序列为[0,0,-1,1,-1,0],第八扩展序列为[0,0,1,-1,-1,0],第九扩展序列为[1,0,0,0,1,1],第十扩展序列为[-1,0,0,0,1,-1],第十一扩展序列为[1,0,0,0,-1,-1],第十二扩展序列为[-1,0,0,0,-1,1],第十三扩展序列为[0,1,0,1,0,1],第十四扩展序列为[0,1,0,-1,0,-1],第十五扩展序列为[0,-1,0,1,0,-1],第十六扩展序列为[0,-1,0,-1,0,1];扩展序列集合10:所述扩展序列集合10,包含16条长度为6的扩展序列,其中,第一扩展序列为[1,1,1,1,1,1],第二扩展序列为[1,1,1,1,-1,-1],第三扩展序列为[1,1,1,-1,1,-1],第四扩展序列为[1,1,1,-1,-1,1],第五扩展序列为[1,1,-1,1,1,-1],第六扩展序列为[1,1,-1,1,-1,1],第七扩展序列为[1,1,-1,-1,1,1],第八扩展序列为[1,1,-1,-1,-1,-1],第九扩展序列为[1,-1,1,1,1,-1],第十扩展序列为[1,-1,1,1,-1,1],第十一扩展序列为[1,-1,1,-1,1,1],第十二扩展序列为[1,-1,1,-1,-1,-1],第十三扩展序列为[1,-1,-1,1,1,1],第十四扩展序列为[1,-1,-1,1,-1,-1],第十五扩展序列为[1,-1,-1,-1,1,-1],第十六扩展序列为[1,-1,-1,-1,-1,1];扩展序列集合11:所述扩展序列集合11,包含32条长度为4的扩展序列,其中,第一扩展序列为[1+0i,1+0i,1+0i,1+0i],第二扩展序列为[1+0i,0+1i,-1+0i,-0-1i],第三扩展序列为[1+0i,-1+0i,1+0i,-1+0i],第四扩展序列为[1+0i,-0-1i,-1+0i,0+1i],第五扩展序列为[0+2i,-0-1i,0+2i,0+1i],第六扩展序列为[0+2i,1+0i,-0-2i,1+0i],第七扩展序列为[0+2i,0+1i,0+2i,-0-1i],第八扩展序列为[0+2i,-1+0i,-0-2i,-1+0i],第九扩展序列为[0+2i,-0-1i,-1+0i,2+0i],第十扩展序列为[0+2i,1+0i,1+0i-0-2i],第十一扩展序列为[0+2i,0+1i,-1+0i,-2+0i],第十二扩展序列为[0+2i,-1+0i,1+0i,0+2i],第十三扩展序列为[0+2i,-0-1i,0+0i,-1+0i],第十四扩展序列为[0+2i,1+0i,0+0i,0+1i],第十五扩展序列为[0+2i,0+1i,0+0i,1+0i],第十六扩展序列为[0+2i,-1+0i,0+0i,-0-1i],第十七扩展序列为[-1+0i,-0-1i,-0-2i,-2+0i],第十八扩展序列为[-1+0i,1+0i,0+2i,0+2i],第十九扩展序列为[-1+0i,0+1i,-0-2i,2+0i],第二十扩展序列为[-1+0i,-1+0i,0+2i,-0-2i],第二十一扩展序列为[-1+0i,-2+0i,0+2i,0+1i],第二十二扩展序列为[-1+0i,-0-2i,-0-2i,1+0i],第二十三扩展序列为[-1+0i,2+0i,0+2i,-0-1i],第二十四扩展序列为[-1+0i,0+2i,-0-2i,-1+0i],第二十五扩展序列为[-1+0i,-2+0i,1+0i,-2+0i],第二十六扩展序列为[-1+0i,-0-2i,-1+0i,0+2i],第二十七扩展序列为[-1+0i,2+0i,1+0i,2+0i],第二十八扩展序列为[-1+0i,0+2i,-1+0i,-0-2i],第二十九扩展序列为[-1+0i,-2+0i,-0-1i,0+0i],第三十扩展序列为[-1+0i,-0-2i,0+1i,0+0i],第三十一扩展序列为[-1+0i,2+0i,-0-1i,0+0i],第三十二扩展序列为[-1+0i,0+2i,0+1i,0+0i];其中,i为虚数单位,i=sqrt(-1)。
- 根据权利要求1或2所述的方法,其中,所述第一指定信息包括以下至少之一信息:车况信息、驾驶员的操作信息、所述交通工具传感器所感知的信息和控制信令;其中,所述车况信息包括以下至少之一:所述交通工具标识、所述交通工具当前地理位置、所述交通工具的行驶速度、所述交通工具的大小、所述交通工具的颜色;所述操作信息包括以下至少之一:所述驾驶员对所述交通工具正在进行的操作,所述驾驶员准备对所述交通工具进行的操作。
- 根据权利要求10所述的方法,其中,所述驾驶员对所述交通工具正在进行的操作包括以下至少之一:刹车、启动、加速、变道和转向;驾驶员准备对所述交通工具进行的操作包括以下至少之一:准备刹车、准备启动、准备加速、准备变道和准备转向。
- 根据权利要求2所述的方法,其中,所述系统参数信息包括以下至少之一:所述交通工具广播所述传输信号的系统帧号;所述交通工具广播所述传输信号的频域位置信息。
- 根据权利要求1所述的方法,其中,所述方法还包括:确定用于传输第三指定信息的第二时频资源上的子资源池;其中,所述子资源池是对所述第二时频资源通过正交划分方式划分得到的;在确定的所述子资源池上传输所述第三指定信息;所述第三指定信息为所述第一指定信息中的部分信息,或为所述第一指定信息中的部分信息和所述第一指定信息生成的信息。
- 根据权利要求13所述的方法,其中,在所述第一时频资源上广播所述传输信号之前应用的载波调制技术中所采用的参数与在所述子资源池上发送所述第三指定信息之前应用的载波调制技术中所采用的参数相同或者不同。
- 根据权利要求8所述的方法,其中,所述参数包括:子载波间隔和循环前缀CP长度。
- 根据权利要求13所述的方法,其中,确定用于传输第三指定信息的第二时频资源上的子资源池包括:根据第四指定信息确定所述子资源池的索引;将所述第二时频资源上子资源池的索引为确定的所述索引的子资源池作为用于传输所述第三指定信息的子资源池;其中,所述第四指定信息为第二指定信息的部分或者全部信息;其中,所述第二指定信息用于确定所述符号扩展技术中所使用的扩展序列。
- 根据权利要求1所述的方法,其中,所述方法还包括:所述传输信号中包括导频符号。
- 一种信息提取方法,包括:接收车联网中各个交通工具广播的传输信号;其中,所述传输信号为所述交通工具的第一指定信息通过符号扩展技术生成的传输信号;从接收到的所述传输信号中提取所述各个交通工具的第一指定信息。
- 根据权利要求18所述的方法,其中,通过以下至少之一方式从接收到的所述传输信号中提取所述各个交通工具的第一指定信息:基于串行干扰消除的多用户盲检测方法;基于并行干扰消除的多用户盲检测方法;基于混合干扰消除的多用户盲检测方法。
- 根据权利要求18所述的方法,其中,所述第一指定信息包括以下至少之一信息:车况信息和驾驶员的操作信息;其中,所述车况信息包括以下至少之一:所述交通工具标识、所述交通工具当前地理位置、所述交通工具的行驶速度、所述交通工具的大小、所述交通工具的颜色;所述操作信息包括以下至少之一:所述驾驶员对所述交通工具正在进行的操作,所述驾驶员准备对所述交通工具进行的操作。
- 根据权利要求20所述的方法,其中,所述驾驶员对所述交通工具正在进行的操作包括以下至少之一:刹车、启动、加速、变道和转向;驾驶员准备对所述交通工具进行的操作包括以下至少之一:准备刹车、准备启动、准备加速、准备变道和准备转向。
- 根据权利要求18所述的方法,其中,所述符号扩展技术中使用的扩展序列由第二指定信息确定,其中,所述第二指定信息由以下至少之一信息产生:所述第一指定信息和与所述交通工具广播所述传输信号相关 的系统参数信息。
- 根据权利要求22所述的方法,其中,所述系统参数信息包括以下至少之一:所述交通工具广播所述传输信号的系统帧号;所述交通工具广播所述传输信号的频域位置信息。
- 根据权利要求18所述的方法,其中,所述方法还包括:接收所述各个交通工具传输的第三指定信息;其中,所述第三指定信息为所述第一指定信息的部分信息,或为所述第一指定信息中的部分信息和所述第一指定信息生成的信息。
- 根据权利要求24所述的方法,其中,接收车联网中各个交通工具广播的传输信号包括:在第一时频资源上接收所述传输信号;接收所述各个交通工具传输的第三指定信息包括:在第二时频资源上的子资源池上接收所述第三指定信息;其中,所述子资源池是对所述第二时频资源通过正交划分方式划分得到的。
- 根据权利要求25所述的方法,其中,所述子资源池由第四指定信息确定;其中,所述第四指定信息为第二指定信息的部分或者全部信息。
- 一种信号发送装置,其中,包括:生成模块,配置为将交通工具的第一指定信息通过符号扩展技术生成传输信号;广播模块,配置为在所述交通工具所在车联网的指定传输信道或第一时频资源上广播生成的所述传输信号。
- 根据权利要求27所述的装置,其中,所述装置还包括:第一确定模块,配置为依据第二指定信息确定所述符号扩展技术中所 使用的扩展序列;其中,所述第二指定信息由以下至少之一信息产生:所述第一指定信息和与所述交通工具广播所述传输信号相关的系统参数信息。
- 根据权利要求27所述的装置,其中,所述装置还包括:第二确定模块,配置为确定用于传输第三指定信息的第二时频资源上的子资源池;其中,所述子资源池是对所述第二时频资源通过正交划分方式划分得到的;所述广播模块,还用于在确定的所述子资源池上传输所述第三指定信息;所述第三指定信息为所述第一指定信息中的部分信息,或为所述第一指定信息中的部分信息和所述第一指定信息生成的信息。
- 一种信息提取装置,包括:接收模块,配置为接收车联网中各个交通工具广播的传输信号;其中,所述传输信号为所述交通工具的第一指定信息通过符号扩展技术生成的传输信号;提取模块,配置为从接收到的所述传输信号中提取所述各个交通工具的第一指定信息。
- 根据权利要求30所述的装置,其中,所述符号扩展技术中使用的扩展序列由第二指定信息确定,其中,所述第二指定信息由以下至少之一信息产生:所述第一指定信息和与所述交通工具广播所述传输信号相关的系统参数信息。
- 根据权利要求30所述的装置,其中,所述接收模块,还配置为接收所述各个交通工具传输的第三指定信息;其中,所述第三指定信息为所述第一指定信息的部分信息,或为所述第一指定信息中的部分信息和所述第一指定信息生成的信息。
- 一种车载设备,包括发射器,位于交通工具中,其中,包括:生成器,配置为将所述交通工具的第一指定信息通过符号扩展技术生 成传输信号;射频模块,与所述生成器连接,配置为在所述交通工具所在车联网的指定传输信道或第一时频资源上广播生成的所述传输信号。
- 根据权利要求33所述的车载设备,其中,还包括:第一处理器,配置为依据第二指定信息确定所述符号扩展技术中所使用的扩展序列;其中,所述第二指定信息由以下至少之一信息产生:所述第一指定信息和与所述交通工具广播所述传输信号相关的系统参数信息。
- 根据权利要求34所述的车载设备,其中,所述第一处理器还用于根据所述第二指定信息确定扩展序列的索引;以及根据所述索引从预先配置的扩展序列集合中选择与所述索引对应的扩展序列作为所述符号扩展技术中所使用的扩展序列。
- 根据权利要求33所述的车载设备,其中,还包括:第二处理器,配置为确定用于传输第三指定信息的第二时频资源上的子资源池;其中,所述子资源池是对所述第二时频资源通过正交划分方式划分得到的;所述射频模块,还配置为在确定的所述子资源池上传输所述第三指定信息;所述第三指定信息为所述第一指定信息中的部分信息,或为所述第一指定信息中的部分信息和所述第一指定信息生成的信息。
- 一种车载设备,包括接收器,位于交通工具中,其中,包括:传输装置,配置为接收车联网中各个所述交通工具广播的传输信号;其中,所述传输信号为所述交通工具的第一指定信息通过符号扩展技术生成的传输信号;处理器,配置为从接收到的所述传输信号中提取所述各个交通工具的第一指定信息。
- 根据权利要求37所述的车载设备,其中,所述符号扩展技术中使用的扩展序列由第二指定信息确定,其中,所述第二指定信息由以下至 少之一信息产生:所述第一指定信息和与所述交通工具广播所述传输信号相关的系统参数信息。
- 根据权利要求37所述的车载设备,其中,所述传输装置,还配置为接收所述各个交通工具传输的第三指定信息;其中,所述第三指定信息为所述第一指定信息的部分信息,或为所述第一指定信息中的部分信息和所述第一指定信息生成的信息。
- 一种交通工具,包括:权利要求33至36中任一项所述的车载设备和权利要求37至39中任一项所述的车载设备。
- 一种存储介质,所述存储介质存储有计算机可执行代码,所述计算机可执行指令用于执行权利要求1至17或18至26任一项提供的方法。
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