CN102542620A - Method, equipment and system for controlling signal transmission time sequence of road side equipment - Google Patents
Method, equipment and system for controlling signal transmission time sequence of road side equipment Download PDFInfo
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Abstract
The invention discloses a method for controlling the signal transmission time sequence of road side equipment, which is used for ensuring that vehicle-mounted equipment locks a correct channel. The method comprises the following steps of: determining first road side equipment and second road side equipment corresponding to any two adjacent lanes; and controlling the first road side equipment to transmit data with a preset byte size of a BST (Beacon Service Table) signal according to a first frequency, and then controlling the second road side equipment to transmit an interference signal according to a second frequency, Wherein the first road side equipment and the second road side equipment alternately transmit the BST signal and the interference signal according to the set period. The invention also discloses a system and equipment for controlling the signal transmission time sequence of the road side equipment.
Description
Technical field
The present invention relates to the intelligent transport technology field, relate in particular to a kind of roadside device signal transmission timing control method, equipment and system.
Background technology
The E-payment system of highway (Electronic Toll Collection System; ETC) adopt DSRC (Dedicated ShortRange Communication, DSRC) technology completion roadside unit (Roadside Unit, RSU; This paper claims roadside device) and board units (On Board Unit; OBU, this paper claims mobile unit) between two-way communication, carry out data interaction through communication; Realization safety certification and consumption are withholdd, thereby can reach the purpose of non-parking charge.
But ETC is different with the bicycle road, and multilane ETC needs to solve the monkey chatter problem when handling.In the existing technology that solves monkey chatter in the multilane in the same way; Be when the RSU in adjacent track sends normal microwave data according to first frequency; The RSU that controls this track sends undesired signal according to second frequency; The microwave data that sent by can not the correct Solution phase separation adjacent track RSU of the OBU that influences this track of this undesired signal, so the OBU in this track just can not receive the influence of the microwave data that neighboring trace RSU sends.Wherein, in the ETC of multilane system, adopt two and send frequency, and adjacent lane adopts different frequency sending datas.
But for arrowband OBU, the transmission undesired signal can influence OBU on the contrary and carry out channel locks, below divides two kinds of situation to describe.
First kind of situation shown in accompanying drawing 1, supposed the lanes of vehicle at 1 channel; The 14kHz that this road RSU sends wakes square wave and BST (Beacon Service Table up; The beacon service table) after signal woke OBU up first, this OBU got into duty from dormant state, and still the default setting among this OBU this moment is the frequency of channel 0 correspondence; The RSU transmitting channel of adjacent lane is that 0 14kHz wakes square wave and BST signal up then; The undesired signal that the RSU in this track of while sends 1 channel is if the BST of this undesired signal and neighboring trace sends or delay transmission simultaneously, when OBU is waken up by the undesired signal in this track once more; Its sensitivity meeting that receives microwave data is higher than and wakes sensitivity up; Therefore can receive the BST signal and carry out the physical channel affirmation according to the corresponding frequency of 0 channel (being neighboring trace) of default setting, thereby the channel of OBU can be locked as 0 channel, causes the channel locks mistake to cause Fail Transaction;
Second kind of situation shown in accompanying drawing 2, supposed the lanes of vehicle at 1 channel; Neighboring trace RSU transmitting channel is 0 14kHz when waking square wave and BST up, and the RSU transmitting channel in this track is 1 undesired signal, after this undesired signal is waken OBU up first; This OBU carries out duty from dormant state, but this moment, the default setting among this OBU was the corresponding frequency of channel 0, and the RSU transmitting channel in this track is that 1 14kHz wakes square wave and BST signal up then; If the undesired signal of neighboring trace is sent simultaneously or transmission in advance; When then OBU was waken up by the BST signal in this track once more, its receiving sensitivity is higher than woke sensitivity up, can receive the undesired signal of sending and carry out the physical channel affirmation according to the corresponding frequency of 0 channel (being neighboring trace) of default setting; Thereby the channel of OBU can be locked as 0 channel, causes the channel locks mistake to cause Fail Transaction.
Summary of the invention
The present invention provides a kind of roadside device signal transmission timing control method, equipment and system; In order to control fully under the situation of waking radiation areas up of mobile unit; Effectively eliminate the monkey chatter of mobile unit; Guarantee the correct channel of mobile unit locking, thereby improve the success ratio of electronic charging.
The concrete technical scheme that the embodiment of the invention provides is following:
A kind of roadside device signal transmission timing control method comprises:
Confirm the corresponding first via side apparatus and second roadside device of any two adjacent lanes;
After controlling the data of said first via side apparatus, control said second roadside device and send undesired signal according to second frequency according to first frequency transmission beacon service table BST signal predetermined bite length;
Wherein, the said first via side apparatus and second roadside device alternately send said BST signal and undesired signal by setting cycle.
A kind of roadside device signal transmission timing opertaing device comprises:
Confirm the unit, be used for confirming the corresponding first via side apparatus of any two adjacent lanes and second roadside device;
Control module; After being used to control the data of said first via side apparatus according to first frequency transmission beacon service table BST signal predetermined bite length; Control said second roadside device and send undesired signal according to second frequency; Wherein, the said first via side apparatus and second roadside device alternately send said BST signal and undesired signal by setting cycle.
A kind of roadside device signal transmission timing control system comprises:
Signal transmission timing opertaing device; Be used for confirming the corresponding first via side apparatus and second roadside device of any two adjacent lanes; After controlling the data of said first via side apparatus, control said second roadside device and send undesired signal according to second frequency according to first frequency transmission beacon service table BST signal predetermined length;
At least two roadside devices are used under the control of said signal transmission timing opertaing device, alternately sending said BST signal and undesired signal by setting cycle.
Based on technique scheme; In the embodiment of the invention, send after the data of predetermined bite length of BST signal the roadside device of current track or the adjacent lane undesired signal of redispatching through the roadside device that is controlled at adjacent lane or current track; Thereby the BST signal that the roadside device that the mobile unit that guarantees to be positioned at current track only can the current track of complete reception under wake-up states sends; And the corresponding channel of locking, and can only receive the part of BST signal for the BST that the roadside device of adjacent lane sends, make and can not resolve this part BST signal and avoid the channel locks mistake; Thereby can control fully under the situation of waking radiation areas up of mobile unit; Effectively eliminate the monkey chatter of mobile unit, guarantee the correct channel of mobile unit locking, improve the success ratio of electronic charging.
Description of drawings
Fig. 1 is an OBU channel locks process synoptic diagram in the prior art;
Fig. 2 is another channel locks process synoptic diagram of OBU in the prior art;
Fig. 3 is the method flow diagram of roadside device signal transmission timing control in the embodiment of the invention;
Fig. 4 is an OBU channel locks method flow diagram in the embodiment of the invention;
Fig. 5 is an OBU channel locks process synoptic diagram in the embodiment of the invention;
Fig. 6 is another channel locks process synoptic diagram of OBU in the embodiment of the invention;
Fig. 7 is a roadside device signal transmission timing opertaing device structural representation in the embodiment of the invention;
Fig. 8 is an OBU structural representation in the embodiment of the invention;
Fig. 9 is a roadside device signal transmission timing control system Organization Chart in the embodiment of the invention.
Embodiment
In order to control fully under the situation of waking radiation areas up of mobile unit; Effectively eliminate the monkey chatter of mobile unit; Guarantee the correct channel of mobile unit locking; Thereby improve the success ratio of electronic charging, the embodiment of the invention provides a kind of roadside device signal transmission timing control method, equipment and system.
Below in conjunction with accompanying drawing the preferred embodiment of the present invention is elaborated.
Shown in accompanying drawing 3, in the embodiment of the invention, the detailed method flow process that the sequential of roadside device transmission signal is controlled is following:
Step 301: confirm the corresponding first via side apparatus and second roadside device of any two adjacent lanes.
Step 302: after control first via side apparatus sends the data of BST signal predetermined bite length according to first frequency; Control second roadside device and send undesired signal according to second frequency; Wherein, the first via side apparatus and second roadside device alternately send BST signal and undesired signal by setting cycle.
Wherein, the data of predetermined bite length can be one or more bytes, promptly are after origin identification (being first byte) at the BST signal sends at least, send undesired signal through the corresponding roadside device of one other channel again.That is to say, guarantee that the part in the BST signal sends, send undesired signal through the corresponding roadside device of one other channel again.
Preferably, the shared time span of undesired signal is between 32us to 100us, and wherein undesired signal time span that byte is shared is about 32us.
Wherein, when number of track-lines during more than two, two adjacent lanes are adjacent any two tracks, position.
For example; With the ETC system that comprises 6 tracks is example; 6 tracks are followed successively by 1 track, 2 tracks, 3 tracks, 4 tracks, 5 tracks and 6 tracks; Wherein, after the corresponding roadside device in control 1 track, 3 tracks and 5 tracks sends the data of BST signal predetermined bite length according to first frequency, control respectively with 1, track, 3 tracks, 2 tracks, 4 tracks and the 6 tracks corresponding roadside device adjacent with 5 tracks send undesired signal according to second frequency; In like manner; After the corresponding roadside device in control 2 tracks, 4 tracks and 6 tracks sends the data of BST signal predetermined bite length according to second frequency, control adjacent with 2 tracks, 4 tracks respectively with 6 tracks 1, track, the corresponding roadside device in 3 tracks and 5 tracks send undesired signal according to first frequency.
Carry out under the prerequisite of above-mentioned control at roadside device signal transmission timing, shown in accompanying drawing 4, the detailed method flow process of OBU channel locks is following in the E-payment system:
Step 401: when mobile unit is in wake-up states, receive the BST signal that roadside device sends according to default setting.
Wherein, the roadside device in current track or the roadside device of adjacent lane are after the data of sending BST signal predetermined bite length, and the roadside device of adjacent lane or the roadside device in current track send undesired signal.
In the embodiment of the invention, be positioned at the OBU in current track, when undesired signal of sending at the RSU that receives current track first or beacon service table (BST) signal, OBU converts duty into from dormant state, and the OBU frequency reception signal that is set to give tacit consent to.Wherein, Be applied in the ETC system of multilane, adopt two kinds of frequency sending datas, and two adjacent RSU are according to different frequency sending datas; When OBU transfers duty to, with a kind of in two kinds of data transmission frequency that adopt the ETC system and adopt of OBU default setting.For example, the RSU in two adjacent tracks adopts the frequency sending data of 5.83Hz and 5.84Hz respectively.
Preferably, the undesired signal of the RSU of current track or adjacent lane transmission is sent after the initial marking of the RSU in adjacent lane or current track transmission BST signal.For example, the origin identification of BST is 7E, and then after the RSU in the current track of control sent " 7E " byte of BST signal, the RSU that controls adjacent lane again sent undesired signal.
Wherein, Receive the BST signal that roadside device sends according to default setting; Be specially: the frequency reception signal according to default setting receives the BST signal that roadside device sends; If do not receive signal in the interval at the fixed time, then switch to another frequency reception signal, receive the BST signal that roadside device sends.
Wherein, be provided with before the BST signal and wake square-wave signal up, promptly transmission wakes square-wave signal up after, send the BST signal, OBU receive the transmission of current track wake square-wave signal or undesired signal up the time be in wake-up states.In the embodiment of the invention, wake the square-wave signal that square-wave signal is 14kHz up.
Wherein, when OBU converts duty into from dormant state, OBU is carried out initial configuration, for example, the clock configuration is provided with the Data Receiving channel of acquiescence etc.
Step 402: the BST signal that resolve to receive if resolve successfully, then is locked as the corresponding channel of frequency with the BST signal that receives with mobile unit; Otherwise, wait for getting into wake-up states next time.
Wherein, be example with current track, RSU alternately sends BST signal and undesired signal to schedule at interval.
In the embodiment of the invention; Suppose that the OBU default setting is for adopting the corresponding first frequency (corresponding 0 channel) of adjacent lane; Then when OBU receives the undesired signal that the RSU in current track sends, be in wake-up states, receive the part BST signal of the RSU transmission of the adjacent lane corresponding, as if in preset time, failing correctly to resolve this part BST signal with first frequency; Then abandon this part BST signal, and wait for and waking up next time.
Particularly; Shown in accompanying drawing 5; Suppose that vehicle is adopting second frequency track (corresponding 1 channel) to go; The 14kHz that the OBU of vehicle receives the RSU transmission in this track wakes square-wave signal and BST signal up, and this OBU gets into duty from dormant state, and default setting OBU adopts first frequency to receive data; Then; The RSU of adjacent lane sends 14kHz according to first frequency through 0 channel and wakes square-wave signal and BST signal up; Simultaneously the RSU in this track sends undesired signal according to second frequency through 1 channel, and the transmission after the RSU of adjacent lane has sent origin identification " 7E " byte of BST signal of this undesired signal, is in wake-up states after the undesired signal in this track of OBU reception; This OBU first frequency according to default setting under wake-up states receives data; Then can receive part BST signal that the RSU of adjacent lane sends, that send simultaneously with the undesired signal in this track, but since the imperfect then OBU of BST signal can not correctly resolve, then after exceeding the schedule time; What confirm reception is invalid data, and then OBU gets into the wake-up waiting state; At this moment; The RSU in this track sends according to second frequency and wakes square-wave signal and BST signal up, OBU receive this track wake square-wave signal up the time get into wake-up states, at first the first frequency according to default setting carries out Data Receiving; At this moment; The RSU of adjacent lane does not also send undesired signal, and then OBU does not also receive the signal of first frequency after scheduled duration, then switches to according to second frequency and receives data; Can receive the signal of the RSU transmission in this track; Only need to guarantee that OBU switches to second frequency with first frequency during waking square-wave signal up, can guarantee that then OBU can receive the complete BST signal of the RSU transmission in this track, can be locked as 1 corresponding channel of second frequency with OBU.
In the embodiment of the invention; Suppose the OBU default setting for adopting the corresponding first frequency (corresponding 0 channel) of adjacent lane, then when OBU receives the square wave wake-up signal that the RSU in current track sends, be in wake-up states, then OBU receives data according to the first frequency of default setting; And the RSU of adjacent lane does not send signal at this moment; OBU then switches to and adopts second frequency to receive data if after scheduled duration, also do not receive data, and the RSU that receives current track is positioned at the BST signal after the square wave wake-up signal according to what second frequency sent; And after correct the parsing, OBU is locked as 1 corresponding channel of second frequency.
Particularly; Shown in accompanying drawing 6, suppose that vehicle is adopting second frequency track (corresponding 1 channel) to go, when the RSU of adjacent lane wakes square-wave signal and BST signal up according to first frequency transmission 14kHz; The RSU in this track sends undesired signal according to second frequency; The OBU of vehicle is when the undesired signal that the RSU that receives this track sends, and this OBU gets into duty from dormant state, and default setting adopts first frequency to receive data; Then, the RSU in this track sends 14kHz according to second frequency and wakes square-wave signal and BST signal up, OBU receive this track wake square-wave signal up after carry out wake-up states; And because the origin identification that the RSU in this track does not also send the BST signal, therefore, adjacent lane does not send undesired signal at this moment; OBU at first carries out Data Receiving according to the default setting first frequency; At this moment, the RSU of adjacent lane does not send signal, and then OBU does not receive signal in scheduled duration; Then switch to according to second frequency and receive signal; And the RSU in this track is just sending signal according to second frequency, only needs to guarantee that OBU has switched to second frequency with first frequency during waking square-wave signal up, can guarantee that then OBU can receive the complete BST signal of the RSU transmission in this track; OBU can be locked as 1 corresponding channel of second frequency with OBU behind correct this complete BST signal of parsing.
In the embodiment of the invention, OBU is narrow-band reception.
Shown in accompanying drawing 7, the embodiment of the invention also provides a kind of roadside device signal transmission timing opertaing device, mainly comprises:
Confirm unit 701, be used for confirming the corresponding first via side apparatus of any two adjacent lanes and second roadside device;
Control module 702; After being used to control the data of first via side apparatus according to first frequency transmission BST signal predetermined bite length; Control second roadside device and send undesired signal according to second frequency; Wherein, the first via side apparatus and second roadside device alternately send BST signal and undesired signal by setting cycle.
Wherein, control module 702 is controlled second roadside device and is sent undesired signal according to second frequency after first via side apparatus sends the origin identification of BST signal according to first frequency.
Shown in accompanying drawing 8, the embodiment of the invention also provides a kind of mobile unit, mainly comprises:
Data reception module 801; When being used for mobile unit and being in wake-up states; Receive the BST signal that roadside device sends according to default setting; Wherein, the roadside device in current track or the roadside device of adjacent lane are after the data of sending BST signal predetermined bite length, and the roadside device of adjacent lane or the roadside device in current track send undesired signal;
Processing module 802 is used for the BST signal that resolution data receiver module 801 receives, if resolves successfully, then mobile unit is locked as the corresponding channel of frequency with the BST signal that receives, otherwise wait gets into wake-up states next time.
Wherein, data reception module 801 receives the BST signal that roadside device sends according to the frequency reception signal of default setting, if do not receive signal in the interval at the fixed time, then switches to another frequency reception signal, receives the BST signal that roadside device sends.
Shown in accompanying drawing 9, a kind of roadside device signal transmission timing control system also is provided in the embodiment of the invention, mainly comprise signal transmission timing opertaing device 901 and at least two roadside devices 902, wherein,
Signal transmission timing opertaing device 901; Be used for confirming the corresponding first via side apparatus 902 and second roadside device 902 of any two adjacent lanes; Control first via side apparatus 902 is controlled second roadside device 902 and is sent undesired signal according to second frequency after sending the data of beacon service table BST signal predetermined length according to first frequency;
At least two roadside devices 902 are used under the control of signal transmission timing opertaing device 901, alternately sending BST signal and undesired signal by setting cycle.
Preferably, after signal transmission timing opertaing device 901 control first via side apparatus 902 send the origin identification of BST signal according to first frequency, control second roadside device 902 and send undesired signal according to second frequency.
Based on technique scheme; In the embodiment of the invention, send after the data of predetermined bite length of BST signal the roadside device of current track or the adjacent lane undesired signal of redispatching through the roadside device that is controlled at adjacent lane or current track; Thereby the BST signal that the roadside device that the mobile unit that guarantees to be positioned at current track only can the current track of complete reception under wake-up states sends; And the corresponding channel of locking, and can only receive the part of BST signal for the BST that the roadside device of adjacent lane sends, make and can not resolve this part BST signal and avoid the channel locks mistake; Thereby can control fully under the situation of waking radiation areas up of mobile unit; Effectively eliminate the monkey chatter of mobile unit, guarantee the correct channel of mobile unit locking, improve the success ratio of electronic charging.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, belong within the scope of claim of the present invention and equivalent technologies thereof if of the present invention these are revised with modification, then the present invention also is intended to comprise these changes and modification interior.
Claims (9)
1. a roadside device signal transmission timing control method is applied to the drive-in toll system, it is characterized in that, comprising:
Confirm the corresponding first via side apparatus and second roadside device of any two adjacent lanes;
After controlling the data of said first via side apparatus, control said second roadside device and send undesired signal according to second frequency according to first frequency transmission beacon service table BST signal predetermined bite length;
Wherein, the said first via side apparatus and second roadside device alternately send said BST signal and undesired signal by setting cycle.
2. the method for claim 1; It is characterized in that; Send the data of beacon service table BST signal predetermined bite length according to first frequency at said first via side apparatus after, control said second roadside device and send undesired signal, be specially according to second frequency:
After said first via side apparatus sends the origin identification of BST signal according to first frequency, control said second roadside device and send undesired signal according to second frequency.
3. according to claim 1 or claim 2 method is characterized in that, when number of track-lines during more than two, said two adjacent lanes are adjacent any two tracks, position.
4. a roadside device signal transmission timing opertaing device is characterized in that, comprising:
Confirm the unit, be used for confirming the corresponding first via side apparatus of any two adjacent lanes and second roadside device;
Control module; After being used to control the data of said first via side apparatus according to first frequency transmission beacon service table BST signal predetermined bite length; Control said second roadside device and send undesired signal according to second frequency; Wherein, the said first via side apparatus and second roadside device alternately send said BST signal and undesired signal by setting cycle.
5. equipment as claimed in claim 4; It is characterized in that; Said control module specifically is used for: after said first via side apparatus sends the origin identification of said BST signal according to first frequency, control said second roadside device and send undesired signal according to second frequency.
6. like claim 4 or 5 described equipment, it is characterized in that when number of track-lines during more than two, said two adjacent lanes are adjacent any two tracks, position.
7. a roadside device signal transmission timing control system is characterized in that, comprising:
Signal transmission timing opertaing device; Be used for confirming the corresponding first via side apparatus and second roadside device of any two adjacent lanes; After controlling the data of said first via side apparatus, control said second roadside device and send undesired signal according to second frequency according to first frequency transmission beacon service table BST signal predetermined length;
At least two roadside devices are used under the control of said signal transmission timing opertaing device, alternately sending said BST signal and undesired signal by setting cycle.
8. system as claimed in claim 7; It is characterized in that; Said signal transmission timing opertaing device is controlled said second roadside device and is sent undesired signal according to second frequency after specifically being used to control the origin identification of said first via side apparatus according to first frequency transmission BST signal.
9. like claim 7 or 8 described systems, it is characterized in that when number of track-lines during more than two, said two adjacent lanes are adjacent any two tracks, position.
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| CN201110445072.3A CN102542620B (en) | 2011-12-27 | 2011-12-27 | Method, equipment and system for controlling signal transmission time sequence of road side equipment |
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| CN103632400A (en) * | 2012-08-24 | 2014-03-12 | 中兴通讯股份有限公司 | Vehicle payment method and system |
| CN103745503A (en) * | 2013-03-27 | 2014-04-23 | 深圳市金溢科技有限公司 | Road side unit downlink signal timing sequence control method, road side unit and system |
| CN103793948A (en) * | 2013-02-01 | 2014-05-14 | 深圳市金溢科技有限公司 | Vehicle terminal, internal interconnection realization method, remote monitoring method and system thereof |
| CN104463993A (en) * | 2014-12-11 | 2015-03-25 | 天津中兴智联科技有限公司 | Method for solving problem of etc adjacent channel interference |
| CN104574541A (en) * | 2014-12-26 | 2015-04-29 | 深圳市金溢科技股份有限公司 | Method and system for synchronizing time sequence of RSUs and multiple antennae |
| CN104835206A (en) * | 2015-04-15 | 2015-08-12 | 深圳市金溢科技股份有限公司 | Free flow system control method, device and system |
| CN107316348A (en) * | 2016-04-26 | 2017-11-03 | 北京万集科技股份有限公司 | Disturbance restraining method, electronic charging system without parking and road side unit equipment |
| CN107579801A (en) * | 2017-08-24 | 2018-01-12 | 深圳市金溢科技股份有限公司 | ETC system, memory, roadside unit and its transaction processing method |
| CN108632757A (en) * | 2018-03-30 | 2018-10-09 | 北京聚利科技股份有限公司 | Communication establishing method, communication system based on trackside antenna and vehicle electronic device |
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