CN103731172B - Roadside unit equipment and radio-frequency receiving-transmitting method - Google Patents
Roadside unit equipment and radio-frequency receiving-transmitting method Download PDFInfo
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- CN103731172B CN103731172B CN201310248200.4A CN201310248200A CN103731172B CN 103731172 B CN103731172 B CN 103731172B CN 201310248200 A CN201310248200 A CN 201310248200A CN 103731172 B CN103731172 B CN 103731172B
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Abstract
The invention discloses a kind of roadside unit equipment, described equipment comprises at least two radio-frequency modules and at least three encoding and decoding devices, at least two described radio-frequency modules are connected with at least three described encoding and decoding devices by switch matrix, and described switch matrix can connect and compose a radio frequency component by any radio-frequency module and any encoding and decoding device; Described equipment is by one of them radio frequency component transmitting data, in the time of this radio frequency component fault, switch the radio-frequency channel of being carried out from this radio frequency component to another radio frequency component by described switch matrix, and after having switched, described equipment is by described another radio frequency component transmitting data. The embodiment of the present invention also provides corresponding radio-frequency receiving-transmitting method. Technical solution of the present invention can provide at least two radio-frequency channels, in the time of a road fault wherein, can switch to another road transceiving data, thereby improve the reliability of roadside unit equipment.
Description
Technical field
The present invention relates to intelligent transportation system (IntelligentTransportSystem, ITS) technical field,Be specifically related to roadside unit equipment and radio-frequency receiving-transmitting method.
Background technology
Intelligent transportation system is the modern transportation of the multiple technologies such as integrated communication, control, traffic, computerTechnology. DSRC (DedicatedShortRangeCommunications, DSRC) system isA kind of mobile radio system, for realize intelligent transportation system board units (OnBoardUnit,OBU) two-way communication between equipment and roadside unit (RoadSideUnit, RSU) equipment.
Traditional RSU equipment generally only includes one group of radio-frequency module and encoding and decoding device, forms a road radio frequencyPassage, in the time of arbitrary place, radio-frequency channel fault, this RSU ability of losing the job, causes whole DSRCSystemic breakdown. But complicated the evil slightly of environment for use in track, very easily causes RSU fault, and then causesThe massive losses of intelligent transportation system, therefore, is necessary further to improve the reliability of RSU equipment.
Summary of the invention
The embodiment of the present invention provides a kind of roadside unit equipment and radio-frequency receiving-transmitting method, to improve roadside unitThe reliability of equipment.
First aspect present invention provides a kind of roadside unit equipment, for dedicated short range communication system, described in establishStandby at least two radio-frequency modules and at least three the encoding and decoding devices of comprising, at least two described radio-frequency modules are logicalCross switch matrix and be connected with at least three described encoding and decoding devices, described switch matrix can be penetrated anyFrequency module and any encoding and decoding device connect and compose a radio frequency component; Described equipment is penetrated by one of themFrequently assembly transmitting data, in the time of this radio frequency component fault, by described switch matrix carry out from this radio frequency component toSwitch the radio-frequency channel of another radio frequency component, and after having switched, described equipment is by described another radio frequencyAssembly transmitting data.
Second aspect present invention provides a kind of roadside unit equipment, for dedicated short range communication system, described in establishFor comprising that indoor unit and outdoor unit, described indoor unit comprise micro-control unit MCU connected with each otherWith indoor encoding and decoding device; Described outdoor unit comprises and being connected with described MCU and indoor encoding and decoding deviceSwitch matrix, and the first radio-frequency module, the second radio-frequency module, the first Room that are connected with described switch matrixOuter encoding and decoding device and the second outdoor encoding and decoding device; Described indoor encoding and decoding device, the first outdoor encoding and decodingAny in device and the second outdoor encoding and decoding device, with described the first radio-frequency module and the second radio-frequency moduleIn any, connect and compose a radio frequency component by described switch matrix; Described MCU is by oneRadio frequency component transmitting data, in the time of this radio frequency component fault, is carried out from this radio frequency component by described switch matrixSwitch radio-frequency channel to another radio frequency component, and after having switched, described equipment is penetrated by described anotherFrequently assembly transmitting data.
Third aspect present invention provides a kind of radio-frequency receiving-transmitting method of roadside unit equipment, logical for special short distanceCommunication system, described equipment comprises indoor unit and outdoor unit, described indoor unit comprises connected with each other micro-Control module MCU and indoor encoding and decoding device; Described outdoor unit comprises and described MCU and indoor volume solutionThe switch matrix that code device connects, and the first radio-frequency module, the second radio frequency that are connected with described switch matrixModule, the first outdoor encoding and decoding device and the second outdoor encoding and decoding device; Described indoor encoding and decoding device, theAny in one outdoor encoding and decoding device and the second outdoor encoding and decoding device, with described the first radio-frequency module andAny in the second radio-frequency module, connects and composes a radio frequency component by described switch matrix; Described sideMethod comprises: described MCU is by a radio frequency component transmitting data; In the time of this radio frequency component fault, by instituteState switch matrix and carry out the radio-frequency channel switching from this radio frequency component to another radio frequency component; Switching completesAfter, described equipment is by described another radio frequency component transmitting data.
The embodiment of the present invention adopts at least two radio-frequency modules and at least three is set in roadside unit equipmentEncoding and decoding device, and connect with switch matrix between radio-frequency module and encoding and decoding device, existed by switch matrixThe technical scheme of carrying out radio-frequency channel switching between radio-frequency module and encoding and decoding device, provides at least two-way to penetrateFrequently passage, in the time of a road fault wherein, can switch to another road transceiving data, thereby improve trackside listThe reliability of element device.
Brief description of the drawings
Fig. 1 is the schematic diagram of the roadside unit equipment that provides of the embodiment of the present invention one;
Fig. 2 is the schematic diagram of the roadside unit equipment that provides of the embodiment of the present invention two;
Fig. 3 is the flow chart of the radio-frequency receiving-transmitting method that provides of one embodiment of the invention;
Fig. 4 is the flow chart of the radio-frequency receiving-transmitting method that provides of another embodiment of the present invention.
Detailed description of the invention
The embodiment of the present invention provides a kind of roadside unit equipment, and this equipment can provide at least two-way radio frequency to lead toRoad, in the time of a road fault wherein, can switch to another road transceiving data, thereby can improve roadside unitThe reliability of equipment. The embodiment of the present invention also provides corresponding radio-frequency receiving-transmitting method. Below carry out respectively in detailExplanation.
Embodiment mono-,
Please refer to Fig. 1, the embodiment of the present invention provides a kind of roadside unit equipment, for DSRC(DSRC) system. Described equipment comprises at least two radio-frequency modules 110 and at least three encoding and decoding devices120, described at least two radio-frequency modules 110 are by switch matrix 130 and at least three described encoding and decodingDevice 120 connects, and described switch matrix 130 can be by any radio-frequency module 110 and any codecPart 120 connects and composes a radio frequency component, and each radio frequency component can form a radio-frequency channel; Described establishingStandby by one of them radio frequency component transmitting data, in the time of this radio frequency component fault, by described switch matrix 130Switch the radio-frequency channel of carrying out from this radio frequency component to another radio frequency component, after having switched, and described equipmentBy described another radio frequency component transmitting data.
Described switch matrix can be specifically CPLD (ComplexProgrammableLogicDevice, CPLD) or field programmable gate array (Field-ProgrammableGateArray,FPGA) or by monolithic processor controlled more than two electronic switch, or other can type of switch matrix.
Described encoding and decoding device can be the physical entity of chip form, for example codec chip; DescribedRadio-frequency module can be the physical entity with external or built-in aerial.
Optionally, described equipment receives data by one of them radio frequency component, or, by least twoRadio frequency component receives data simultaneously. Preferred embodiment, radio-frequency module can be two, codecPart can be three, and these two radio-frequency modules and three encoding and decoding devices combine mutually, can form six kinds and penetrateFrequently assembly, thus six kinds of radio-frequency channels formed. But in practical application, logical without using so many radio frequenciesRoad, conveniently considers with implementing according to actual needs, selects wherein two to three kinds of radio frequency components of application, forms twoCan meet application to three kinds of radio-frequency channels.
And then the embodiment of the present invention also provides a kind of DSRC system, this system comprise roadside unit equipment andBoard units equipment, described roadside unit equipment is roadside unit equipment as described in Figure 1.
To sum up, the embodiment of the present invention provides a kind of roadside unit equipment and a kind of DSRC system, described roadSide apparatus adopts at least two radio-frequency modules and at least three encoding and decoding devices is set, and in radio-frequency module and volumeBetween decoding device, connect with switch matrix, carried out between radio-frequency module and encoding and decoding device by switch matrixThe technical scheme that switch radio-frequency channel, provides at least two radio-frequency channels, in the time of a road fault wherein, and canTo switch to another road transceiving data, thereby improve the reliability of roadside unit equipment.
Embodiment bis-,
On the basis of the roadside unit equipment providing at embodiment mono-, can there is multiple detailed description of the invention. ThisEmbodiment is on the basis of embodiment mono-, a kind of specific embodiments that further refinement obtains.
Please refer to Fig. 2, a kind of roadside unit equipment that the embodiment of the present invention provides, for DSRCSystem, described equipment comprises indoor unit 200 and outdoor unit 300.
Described indoor unit 200 comprises micro-control unit MCU201 connected with each other and indoor encoding and decoding device202；
Described outdoor unit 300 comprises the switch being connected with described MCU201 and indoor encoding and decoding device 202Matrix 305, and the first radio-frequency module 301 being connected with described switch matrix 305, the second radio-frequency module 302,The first outdoor encoding and decoding device 303 and the second outdoor encoding and decoding device 304;
The outdoor encoding and decoding device 302 of described indoor encoding and decoding device 202, the first and the second outdoor encoding and decoding deviceAny in 303, with any in described the first radio-frequency module 301 and the second radio-frequency module 302, energyEnough connect and compose a radio frequency component by described switch matrix;
Described MCU201 is by a radio frequency component transmitting data, in the time of this radio frequency component fault, by describedSwitch the radio-frequency channel that switch matrix 305 is carried out from this radio frequency component to another radio frequency component, and switching completesAfter, described equipment is by described another radio frequency component transmitting data.
Wherein, described switch matrix can be specifically CPLD or FPGA or by monolithic processor controlled twoAbove electronic switch.
In concrete application, can adopt following scheme:
At initialization state, described MCU201 receives or transmitting data by the first radio frequency component, described inThe first radio frequency component comprises described indoor encoding and decoding device 202 and described the first radio-frequency module 301;
In the time of described the first radio frequency component fault, carry out radio-frequency channel switching by described switch matrix 305, cutChange rear described MCU201 by least one reception in the second radio frequency component and the 3rd radio frequency componentData, by described the 3rd radio frequency component transmitting data, described the second radio frequency component comprises described first outdoorEncoding and decoding device 303 and described the first radio-frequency module 301, described the 3rd radio frequency component comprises described second outdoorEncoding and decoding device 304 and described the second radio-frequency module 302.
In other embodiment, under initialization state, described MCU201 also can pass through other radio frequency groupPart receives or transmitting data, for example, and by being formed by indoor encoding and decoding device 202 and the second radio-frequency module 302The 4th radio frequency component transceiving data; In this case, after has switched follow-up radio-frequency channel, MCU201Will be by the second radio frequency component transmitting data; This is in order to ensure, two radio frequency components selecting before and after switchingAdopt respectively different radio-frequency modules, further improve reliability. Under initialization state, be not limited to adoptWith first or the 4th radio frequency component, also can adopt second or the 3rd radio frequency component. What deserves to be explained is, theEncoding and decoding device in the one or the 4th radio frequency component is arranged in indoor unit, can have higher radio-frequency transmissionsSpeed.
Optionally, described switch matrix carries out after radio-frequency channel switched, and described MCU can be by theOne in the two and the 3rd radio frequency component receives data, also can jointly receive data by two assemblies. AsIt is overtime that outdoor encoding and decoding device of fruit receives data, and MCU can read another outdoor volume by serial portsThe data that decoding device receives, thereby the object of raising reception reliability.
Optionally, described switch matrix is specially CPLD, and described MCU is by serial line interface (SerialPeripheralInterface, SPI) be connected with described CPLD, described indoor encoding and decoding device passes through RS485Interface is connected with described CPLD; Input and output (IO) pipe of described the first and second outdoor encoding and decoding devicesPin is connected with the IO pin of described CPLD, and by Serial Peripheral Interface (SPI) (SPI) one-byte instruction communication;Described the first and second radio-frequency modules connect from the different pins of described CPLD respectively.
In a kind of embodiment, described MCU detects and refers to specifically for sendaisle under initialization stateOrder is to described indoor encoding and decoding device and described the first outdoor encoding and decoding device; Described indoor encoding and decoding device is receivedDetect after instruction to described passage, open radio-frequency transmissions switch, by described the first radio-frequency module transmitting data;Described the first outdoor encoding and decoding device detects instruction by the described passage of receiving and is transmitted to described switch matrix, byDescribed switch matrix is examined by the data of described the first radio-frequency module transmitting according to described indoor encoding and decoding deviceSurvey whether fault of described the first radio frequency component, and testing result is sent to described MCU; Described MCU connectsReceive described testing result, while confirming that described the first radio frequency component breaks down, indicate described the second outdoor volume solutionCode device sends handover request to described switch matrix, by described switch matrix carry out from the first radio frequency component toSwitch the radio-frequency channel of the 3rd radio frequency component.
Above-mentioned MCU sendaisle detects instruction to described the first outdoor encoding and decoding device, is applied to initial workMake to adopt under state the scene of the first radio frequency component; If adopt the 4th radio frequency component under initialization state,MCU answers sendaisle to detect instruction to the second outdoor encoding and decoding device; That is to say, MCU should sendPassage detects outdoor encoding and decoding device corresponding to radio-frequency module of instruction to current use. Be necessary explanation, theOne radio-frequency module is relative with the first outdoor encoding and decoding device, the second radio-frequency module and the second outdoor encoding and decoding deviceCorresponding.
Above-mentioned indoor encoding and decoding device is opened radio-frequency transmissions switch, by the first radio-frequency module transmitting data,Can be specifically, according to preset rules or some cycles, in Preset Time, ceaselessly to send data. Above-mentionedThe data of being launched by described the first radio-frequency module according to described indoor encoding and decoding device by described switch matrixDetecting whether fault of described the first radio frequency component, can be specifically that for example CPLD of switch matrix enters detectionState, detects that radio-frequency transmissions switch is effective, and a N continuous above arteries and veins corresponding to data transmission detectedPunching, judges that the state of radio-frequency channel that the first radio frequency component forms is normal, otherwise judges it is fault, thenSend a level signal that represents testing result to MCU. General, this testing result is first by sendingSendaisle detects instruction and obtains to the outdoor encoding and decoding device of CPLD, then has this outdoor encoding and decoding device reportAccuse to MCU. MCU obtains testing result, while confirming the first radio frequency component fault, selects another radio frequencyAssembly, generally can select the 3rd radio frequency component, then indicates CPLD to carry out from the first radio frequency component to theSwitch the radio-frequency channel of three radio frequency components. Herein, the encoding and decoding that refer to specifying are switched in so-called radio-frequency channelThe emission switch of device, transmitting data, these three data channel of reception data switch to and the radio frequency mould of specifyingThe data channel such as the emission switch of piece, transmitting data, reception data are corresponding to be connected. Need to ensure,In arbitrary moment, only have the radio-frequency module can transmitting data. In some other embodiment, sendaisleDetect instruction and get testing result to the outdoor encoding and decoding device of CPLD, confirm the first radio frequency component faultTime, also can direct instruction CPLD execution cut from the radio-frequency channel of the first radio frequency component to the three radio frequency componentsChange, and needn't wait for the instruction of MCU.
From data emission always: initialization state, what MCU formed by the first radio frequency component penetratesFrequently passage transmitting data; In the first radio frequency component fault, after completing radio-frequency channel switching, MCU can lead toCross serial line interface the data of needs transmitting are sent to outdoor unit, be specially the CPLD by outdoor unitSend to the second outdoor encoding and decoding device, after being processed by the second encoding and decoding device, be transmitted to through the second radio-frequency moduleBoard units equipment; That is to say, after completing radio-frequency channel switching, MCU is by the 3rd radio frequency componentTransmitting data. Thereby, can think, the first radio frequency component forms main radio-frequency channel, the 3rd radio frequency component shapeBecome from radio-frequency channel, in the time of the fault of main radio-frequency channel, change by from radio-frequency channel transmitting data, realize and sending out with thisPenetrate the backup of direction.
From data receiver always: initialization state, what MCU formed by the first radio frequency component penetratesFrequently passage receives data; In the first radio frequency component fault, after completing radio-frequency channel switching, MCU passes throughThe CPLD that serial line interface connects reads the data that the first and second outdoor encoding and decoding devices receive, and realizes and receivingThe backup of direction. It should be noted that, under the help of CPLD, the second radio frequency component and the 3rd radio frequency groupPart can independently receive data separately, is independent of each other, and therefore, can receive data simultaneously.
In a kind of embodiment, CPLD specifically can detect the first radio frequency according to two kinds of modes hereinafter describedWhether fault of assembly:
One, when the radio-frequency module of current use is as the first radio-frequency module configuration frequency (5.83G or 5.84G),If there is no configuration successful, this first radio-frequency module has a losing lock signal and offers MCU, when MCU inspectionMeasure losing lock signal when effective, notify the radio-frequency module of the current use of the second outdoor encoding and decoding device by serial portsExtremely, switched to CPLD application radio-frequency channel by the second outdoor encoding and decoding device.
Two, as abnormal in the power detection appearance of the first radio-frequency module to the radio-frequency module of current use, adjustment amountBe greater than threshold value for example when 8db, think that the first radio-frequency module damages, and notifies the second outdoor volume solution by serial portsThe radio-frequency module of the current use of code device is abnormal, logical to CPLD application radio frequency by the second outdoor encoding and decoding deviceRoad switches.
In the embodiment of the present invention, described CPLD carries out " seizing afterwards " principle, that is, carry out recentlyAn instruction of receiving. MCU and encoding and decoding device etc. send to the instruction of CPLD to comprise:
A0H: open main channel serial ports. Indoor unit and outdoor unit only have a road serial communication, and chamberOn outer unit, there are two encoding and decoding devices, between them, must ensure to only have a road on pathAt transmitting data, so two outdoor encoding and decoding devices send instruction to CPLD by SPIRequire to use passage serial ports, CPLD receives after this instruction, outdoor current request volume solutionThe enterprising row data of serial ports passage that the serial ports of code device is switched to indoor unit send. And twoThe data receiver action of individual outdoor encoding and decoding device is that logic is connected in CPLD inside,So can receive data simultaneously.
A1H: open debug serial port, the Debugging message of two outdoor encoding and decoding devices is passed through to debugging passageBe sent to indoor unit, facilitate commissioning staff to check the state of RSU. Principle refers to A0HMake identical.
A2H: use the encoding and decoding device of indoor unit to send data, CPLD receives after this instruction, meeting handleThe emission switch of indoor encoding and decoding device and transmitting data are connected on radio-frequency module correspondingEmission switch and transmitting data on.
A3H: use the encoding and decoding device of outdoor unit to send data. In the time that passage damages, can use volumeOutdoor encoding and decoding device sends data, now sends transmission channel request to CPLD, thisTime CPLD can close the company of emission switch and transmitting data and the radio-frequency module of indoor unitConnect, the emission switch of an outdoor encoding and decoding device and transmitting data are connected to radio frequency mouldOn piece on corresponding emission switch and transmitting data. Reach passage backup with this.
The dutycycle adjustment of A4H:512K data. OBU signal is carried out to shaping, encoding and decoding device is connectReceive the 512KFM0 coding of standard of comparison, increase the success rate of decoding.
C4H: close the dutycycle adjustment of 512K data, data transparent transmission is arrived in encoding and decoding device.This is for some test environment requirements.
A5H: another encoding and decoding device resets. CPLD receives after the A5H instruction of an encoding and decoding device,Then the external reset pin of another encoding and decoding device is forced to drag down after a period of time,Draw high again. Reach the effect of this encoding and decoding device that resets. When this function is used for preventing from upgrading,Another chip, in deadlock state, can not effectively be upgraded.
Above, the roadside unit equipment embodiment of the present invention being provided is illustrated. Wherein, two outdoorThe vacant pin of encoding and decoding device is all connected on the IO pin of CPLD, patrols if what will increase newly laterCollect device and realize certain function, without changing hardware circuit, only need to revise CPLD program, just can be realThe upgrading of existing new generation product. And can upgrade to CPLD by outdoor encoding and decoding device.
And then the embodiment of the present invention also provides a kind of DSRC system, this system comprise roadside unit equipment andBoard units equipment, described roadside unit equipment is roadside unit equipment as described in Figure 2.
To sum up, the embodiment of the present invention provides a kind of roadside unit equipment and a kind of DSRC system, described roadSide apparatus adopts at least two radio-frequency modules and at least three encoding and decoding devices is set, and in radio-frequency module and volumeBetween decoding device, connect with switch matrix, carried out between radio-frequency module and encoding and decoding device by switch matrixThe technical scheme that switch radio-frequency channel, provides at least two radio-frequency channels, in the time of a road fault wherein, and canTo switch to another road transceiving data, thereby improve the reliability of roadside unit equipment.
Embodiment tri-,
Please refer to Fig. 3, the embodiment of the present invention provides a kind of radio-frequency receiving-transmitting method of roadside unit equipment, forDedicated short range communication system. Described roadside unit equipment comprises indoor unit and outdoor unit, described indoor listUnit comprises micro-control unit connected with each other (MCU) and indoor encoding and decoding device; Described outdoor unit bagDraw together the switch matrix being connected with described MCU and indoor encoding and decoding device, and be connected with described switch matrixThe first radio-frequency module, the second radio-frequency module, the first outdoor encoding and decoding device and the second outdoor encoding and decoding device.Described indoor encoding and decoding device, arbitrary in the first outdoor encoding and decoding device and the second outdoor encoding and decoding deviceIndividual, with any in described the first radio-frequency module and the second radio-frequency module, connect by described switch matrixForm a radio frequency component; Described method comprises:
401, described MCU is by a radio frequency component transmitting data;
402,, in the time of this radio frequency component fault, carried out from this radio frequency component to another by described switch matrixSwitch the radio-frequency channel of radio frequency component;
403,, after having switched, described equipment is by described another radio frequency component transmitting data.
Please refer to Fig. 4, in a kind of embodiment, described method specifically can comprise:
401 ',, at initialization state, described MCU receives or transmitting data by the first radio frequency component, instituteState the first radio frequency component and comprise described indoor encoding and decoding device and described the first radio-frequency module;
402 ', detect described the first radio frequency component and whether break down, while confirming to break down, opened by describedClose matrix and carry out radio-frequency channel switching;
403 ', switched at least one by the second radio frequency component and the 3rd radio frequency component of rear described MCUIndividual reception data, by the 3rd radio frequency component transmitting data, described the second radio frequency component comprises described the first RoomOuter encoding and decoding device and the first radio-frequency module, described the 3rd radio frequency component comprises described the second outdoor codecPart and the second radio-frequency module.
Optionally, by second and the 3rd, at least one in radio frequency component receives data to MCU described in 403 'Comprise: described MCU by second and the 3rd radio frequency component jointly receive data.
Optionally, whether described the first radio frequency component of the detection described in 403 ' breaks down, and confirms to occur eventWhen barrier, carry out radio-frequency channel switching by described switch matrix and comprise:
Described MCU sendaisle detects instruction to described indoor encoding and decoding device and described the first outdoor volume solutionCode device; Described indoor encoding and decoding device receives that described passage detects after instruction, opens radio-frequency transmissions switch,By described the first radio-frequency module transmitting data; Described the first outdoor encoding and decoding device is by the described passage of receivingDetect instruction and be transmitted to described switch matrix, described switch matrix passes through institute according to described indoor encoding and decoding deviceState described in the Data Detection of the first radio-frequency module transmitting whether fault of the first radio frequency component, and testing result is sent outGive described MCU; Described MCU receives described testing result, confirms that event occurs described the first radio frequency componentWhen barrier, indicate described the second outdoor encoding and decoding device to send handover request to described switch matrix, opened by describedClose matrix and carry out the radio-frequency channel switching from the first radio frequency component to the three radio frequency components.
Above, embodiment of the present invention method has been done to simple declaration, more detailed description please refer to Fig. 1 andRoadside unit equipment described in Fig. 2 embodiment.
To sum up, the embodiment of the present invention provides a kind of radio-frequency receiving-transmitting method of roadside unit, and the method adoptsAt least two radio-frequency modules and at least three encoding and decoding devices are set in roadside device, and in radio-frequency module and volumeBetween decoding device, connect with switch matrix, carried out between radio-frequency module and encoding and decoding device by switch matrixThe technical scheme that switch radio-frequency channel, provides at least two radio-frequency channels, in the time of a road fault wherein, and canTo switch to another road transceiving data, thereby improve the reliability of roadside unit equipment.
One of ordinary skill in the art will appreciate that all or part of step in the whole bag of tricks of above-described embodimentSuddenly can complete by hardware, also can complete by the relevant hardware of programmed instruction, this program canBe stored in a computer-readable recording medium, storage medium can comprise: read-only storage, read at randomMemory, disk or CD etc.
The roadside unit equipment and the radio-frequency receiving-transmitting method that above the embodiment of the present invention are provided have been carried out in detailThin introduction, but the explanation of above embodiment is for helping to understand method of the present invention and core concept thereof,Should not be construed as limitation of the present invention. The technical scope that those skilled in the art disclose in the present inventionIn, the variation that can expect easily or replacement, within all should being encompassed in protection scope of the present invention.
Claims (10)
1. a roadside unit equipment, for dedicated short range communication system, is characterized in that:
Described equipment comprises at least two radio-frequency modules and at least three encoding and decoding devices, at least two described radio-frequency modules are connected with at least three described encoding and decoding devices by switch matrix, and described switch matrix can connect and compose a radio frequency component by any radio-frequency module and any encoding and decoding device; Described equipment is by one of them radio frequency component transmitting data, in the time of this radio frequency component fault, switch matrix carries out radio-frequency channel switching between radio-frequency module and encoding and decoding device, switch the radio-frequency channel of being carried out from this radio frequency component to another radio frequency component by described switch matrix, after having switched, described equipment is by described another radio frequency component transmitting data.
2. equipment according to claim 1, is characterized in that:
Described equipment receives data by one of them radio frequency component, or, receive data by least two radio frequency components simultaneously.
3. equipment according to claim 1, is characterized in that:
Specifically CPLD or field programmable gate array or by monolithic processor controlled more than two electronic switch of described switch matrix.
4. a roadside unit equipment, for dedicated short range communication system, described equipment comprises indoor unit and outdoor unit, it is characterized in that:
Described indoor unit comprises micro-control unit connected with each other and indoor encoding and decoding device;
Described outdoor unit comprises the switch matrix being connected with described micro-control unit and indoor encoding and decoding device, and the first radio-frequency module being connected with described switch matrix, the second radio-frequency module, the first outdoor encoding and decoding device and the second outdoor encoding and decoding device;
Described indoor encoding and decoding device, any in the first outdoor encoding and decoding device and the second outdoor encoding and decoding device, with any in described the first radio-frequency module and the second radio-frequency module, connects and composes a radio frequency component by described switch matrix;
Described micro-control unit is by a radio frequency component transmitting data, in the time of this radio frequency component fault, switch the radio-frequency channel of being carried out from this radio frequency component to another radio frequency component by described switch matrix, and after having switched, described equipment is by described another radio frequency component transmitting data.
5. equipment according to claim 4, is characterized in that:
At initialization state, described micro-control unit receives or transmitting data by the first radio frequency component, and described the first radio frequency component comprises described indoor encoding and decoding device and described the first radio-frequency module;
In the time of described the first radio frequency component fault, carry out radio-frequency channel switching by described switch matrix, switch rear described micro-control unit by least one the reception data in the second radio frequency component and the 3rd radio frequency component, by described the 3rd radio frequency component transmitting data, described the second radio frequency component comprises described the first outdoor encoding and decoding device and described the first radio-frequency module, and described the 3rd radio frequency component comprises described the second outdoor encoding and decoding device and described the second radio-frequency module.
6. equipment according to claim 5, is characterized in that:
Described switch matrix carries out after radio-frequency channel switched, described micro-control unit by second and the 3rd radio frequency component jointly receive data.
7. equipment according to claim 5, is characterized in that:
Described micro-control unit detects instruction to described indoor encoding and decoding device and described the first outdoor encoding and decoding device specifically for sendaisle under initialization state;
Described indoor encoding and decoding device receives that described passage detects after instruction, opens radio-frequency transmissions switch, by described the first radio-frequency module transmitting data;
Described the first outdoor encoding and decoding device detects instruction by the described passage of receiving and is transmitted to described switch matrix, by described switch matrix according to described indoor encoding and decoding device by whether fault of the first radio frequency component described in the Data Detection of described the first radio-frequency module transmitting, and testing result is sent to described micro-control unit;
Described micro-control unit receives described testing result, while confirming that described the first radio frequency component breaks down, indicate described the second outdoor encoding and decoding device to send handover request to described switch matrix, carry out and switch from the radio-frequency channel of the first radio frequency component to the three radio frequency components by described switch matrix.
8. a radio-frequency receiving-transmitting method for roadside unit equipment, for dedicated short range communication system, described equipment comprises indoor unit and outdoor unit, it is characterized in that:
Described indoor unit comprises micro-control unit connected with each other and indoor encoding and decoding device; Described outdoor unit comprises the switch matrix being connected with described micro-control unit and indoor encoding and decoding device, and the first radio-frequency module being connected with described switch matrix, the second radio-frequency module, the first outdoor encoding and decoding device and the second outdoor encoding and decoding device; Described indoor encoding and decoding device, any in the first outdoor encoding and decoding device and the second outdoor encoding and decoding device, with any in described the first radio-frequency module and the second radio-frequency module, connects and composes a radio frequency component by described switch matrix;
Described method comprises:
Described micro-control unit is by a radio frequency component transmitting data;
In the time of this radio frequency component fault, switch the radio-frequency channel of being carried out from this radio frequency component to another radio frequency component by described switch matrix;
After having switched, described equipment is by described another radio frequency component transmitting data.
9. method according to claim 8, is characterized in that, described method specifically comprises:
At initialization state, described micro-control unit receives or transmitting data by the first radio frequency component, and described the first radio frequency component comprises described indoor encoding and decoding device and described the first radio-frequency module;
Detect described the first radio frequency component and whether break down, while confirming to break down, carry out radio-frequency channel switching by described switch matrix;
Switch rear described micro-control unit by least one the reception data in the second radio frequency component and the 3rd radio frequency component, by the 3rd radio frequency component transmitting data, described the second radio frequency component comprises described the first outdoor encoding and decoding device and the first radio-frequency module, and described the 3rd radio frequency component comprises described the second outdoor encoding and decoding device and the second radio-frequency module.
10. method according to claim 9, is characterized in that, whether described the first radio frequency component of described detection breaks down, and while confirming to break down, carries out radio-frequency channel switching comprise by described switch matrix:
Described micro-control unit sendaisle detects instruction to described indoor encoding and decoding device and described the first outdoor encoding and decoding device;
Described indoor encoding and decoding device receives that described passage detects after instruction, opens radio-frequency transmissions switch, by described the first radio-frequency module transmitting data;
Described the first outdoor encoding and decoding device detects instruction by the described passage of receiving and is transmitted to described switch matrix, described switch matrix by whether fault of the first radio frequency component described in the Data Detection of described the first radio-frequency module transmitting, and sends to described micro-control unit by testing result according to described indoor encoding and decoding device;
Described micro-control unit receives described testing result, while confirming that described the first radio frequency component breaks down, indicate described the second outdoor encoding and decoding device to send handover request to described switch matrix, carry out and switch from the radio-frequency channel of the first radio frequency component to the three radio frequency components by described switch matrix.
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| CN107342777B (en) * | 2017-06-30 | 2019-09-27 | 维沃移动通信有限公司 | A kind of control method and mobile terminal of radio circuit |
| CN111756388B (en) * | 2020-06-28 | 2022-06-07 | 维沃移动通信有限公司 | Radio frequency circuit and electronic equipment |
| CN112738784B (en) * | 2020-12-29 | 2023-02-17 | 北京万集智能网联技术有限公司 | Communication control method, communication control device, vehicle-mounted unit, device and readable storage medium |
| CN114142878B (en) * | 2021-12-01 | 2022-08-26 | 西安电子科技大学 | Wireless signal processing method, system, computer equipment and storage medium |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11339181A (en) * | 1998-05-28 | 1999-12-10 | Matsushita Electric Ind Co Ltd | Etc on-vehicle machine with broadcasting receiving function |
| CN101119187A (en) * | 2007-09-06 | 2008-02-06 | 上海可鲁系统软件有限公司 | Master-salve equipment switch control method |
| CN102490768A (en) * | 2011-12-23 | 2012-06-13 | 北京交大思诺科技有限公司 | Double-sleeve automatic switching BTM (Business Transaction Management) equipment and realizing method thereof |
| CN102694669A (en) * | 2011-03-23 | 2012-09-26 | 中兴通讯股份有限公司 | Road side identifier station and method for switching primary road side unit and standby road side unit |
| CN202748849U (en) * | 2011-07-20 | 2013-02-20 | 深圳市金溢科技有限公司 | Road side unit (RSU) equipment |
| CN202870486U (en) * | 2012-07-26 | 2013-04-10 | 深圳市金溢科技有限公司 | Road side unit with two unit standbys, and indoor unit thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008098931A (en) * | 2006-10-11 | 2008-04-24 | Matsushita Electric Ind Co Ltd | Vehicle-to-vehicle communication method and on-vehicle communication equipment |
-
2013
- 2013-06-21 CN CN201310248200.4A patent/CN103731172B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11339181A (en) * | 1998-05-28 | 1999-12-10 | Matsushita Electric Ind Co Ltd | Etc on-vehicle machine with broadcasting receiving function |
| CN101119187A (en) * | 2007-09-06 | 2008-02-06 | 上海可鲁系统软件有限公司 | Master-salve equipment switch control method |
| CN102694669A (en) * | 2011-03-23 | 2012-09-26 | 中兴通讯股份有限公司 | Road side identifier station and method for switching primary road side unit and standby road side unit |
| CN202748849U (en) * | 2011-07-20 | 2013-02-20 | 深圳市金溢科技有限公司 | Road side unit (RSU) equipment |
| CN102490768A (en) * | 2011-12-23 | 2012-06-13 | 北京交大思诺科技有限公司 | Double-sleeve automatic switching BTM (Business Transaction Management) equipment and realizing method thereof |
| CN202870486U (en) * | 2012-07-26 | 2013-04-10 | 深圳市金溢科技有限公司 | Road side unit with two unit standbys, and indoor unit thereof |
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