CN104574533B - Free flow board units concurrent processing method, roadside unit and free streaming system - Google Patents
Free flow board units concurrent processing method, roadside unit and free streaming system Download PDFInfo
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- CN104574533B CN104574533B CN201410122923.4A CN201410122923A CN104574533B CN 104574533 B CN104574533 B CN 104574533B CN 201410122923 A CN201410122923 A CN 201410122923A CN 104574533 B CN104574533 B CN 104574533B
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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07B—TICKET-ISSUING APPARATUS; FARE-REGISTERING APPARATUS; FRANKING APPARATUS
- G07B15/00—Arrangements or apparatus for collecting fares, tolls or entrance fees at one or more control points
- G07B15/06—Arrangements for road pricing or congestion charging of vehicles or vehicle users, e.g. automatic toll systems
- G07B15/063—Arrangements for road pricing or congestion charging of vehicles or vehicle users, e.g. automatic toll systems using wireless information transmission between the vehicle and a fixed station
Abstract
This application provides a kind of free flow board units OBU concurrent processing methods, the process of exchange of each OBU in its coverage is performed positioned at the roadside unit RSU of the ID of trace route path point modes concurrent with timesharing, the process of exchange includes：A, the RSU send search OBU orders into the RSU coverages every preset time, if not discharging completion in each process of exchange for sending search OBU order foregoing description RSU and any one OBU, the trade command corresponding with its current stateful transaction is also sent to the OBU；The feedback information to be received for the feedback information of trade command and/or for searching for OBU orders such as B, the RSU, if receiving correct feedback information, corresponding OBU stateful transaction is updated according to the feedback information.Therefore the application accelerates OBU routing information identification process, improves operating efficiency, so as to improve the success rate that ID of trace route path is carried out to OBU.
Description
Technical field
The application is related to intelligent transportation field, more particularly to a kind of free flow OBU（Board units, On board Unit）
Concurrent processing method, RSU（Roadside unit, Road Side Unit）And free streaming system.
Background technology
In intelligent transportation application field, due to general ETC（Electronic Toll Collection, electronics does not stop
Car toll collection system）Track can all use track gate, to being separated one by one by the vehicle for being mounted with OBU in track, thus RSU with
When OBU is traded by the way of first processing, order are merchandised first, i.e., each RSU is traded with an OBU, has been merchandised
Cheng Hou, track gate is argued, and the vehicle that transaction is completed passes through, the vehicle transaction of RSU again with arriving below.
But in ETC Multi-path recognition free flow application system, ID of trace route path point does not have track gate, causes to be loaded with
OBU vehicles by ID of trace route path point when speed it is uncontrollable, therefore ID of trace route path point pass through car speed quickly.If
There are many cars in ID of trace route path point while when passing through at a high speed, continuing to use first first processing, order mode of doing business, then occurring
When RSU and one of OBU is traded, the affiliated vehicles of OBU not being traded have been moved off path mark because speed is too fast
Know point, and RSU has little time to handle corresponding OBU situation, causes RSU can not guarantee the OBU success flags road to each car
Footpath information.
It can be seen that, in Multi-path recognition free flow application system, by the way of first processing, order are merchandised first, RSU pairs
The success rate that OBU carries out ID of trace route path is low.
The content of the invention
In order to solve the above technical problems, the embodiment of the present application provides a kind of free flow OBU（Board units, On board
Unit）Concurrent processing method, RSU（Roadside unit, Road Side Unit）And free streaming system, accelerate OBU paths to reach
Message identification process, improves the purpose of operating efficiency, and technical scheme is as follows：
A kind of free flow board units OBU concurrent processing methods, positioned at ID of trace route path point roadside unit RSU with timesharing simultaneously
The mode of hair performs the process of exchange of each OBU its coverage Nei, and the process of exchange includes：
A, the RSU send search OBU orders into the RSU coverages every preset time, if sent out every time
Send search OBU order foregoing description RSU and any one OBU process of exchange not discharge completion, then also sent and it to the OBU
The corresponding trade command of current stateful transaction；
The feedback letter to be received for the feedback information of trade command and/or for searching for OBU orders such as B, the RSU
Breath, if receiving correct feedback information, corresponding OBU stateful transaction is updated according to the feedback information.
It is preferred that, in addition to：
The RSU sets up the queue of the stateful transaction for depositing OBU；
Corresponding OBU stateful transaction step is updated according to the feedback information, is specially：If having described corresponding in queue
OBU stateful transaction, then change or delete the stateful transaction of corresponding OBU described in the queue according to feedback information；If
There is no corresponding OBU stateful transaction in queue, then in queue newly-built corresponding OBU stateful transaction.
It is preferred that, described RSU etc. is to be received for the feedback information of trade command and/or for the anti-of search OBU orders
During feedforward information, in the case where not receiving feedback information or receiving the feedback information of mistake, the OBU is kept in the team
Stateful transaction in row is constant.
It is preferred that, stateful transactions of the OBU in queue does not change in N sections of preset times as described, then from the team
The stateful transaction of the OBU is deleted in row, N is preset value, for the integer more than 1.
It is preferred that, the stateful transaction of the OBU includes：
Read routing information stateful transaction, write routing information stateful transaction and release OBU stateful transactions；
Trade command corresponding with the reading routing information stateful transaction is reading routing information trade command；Road is write with described
Information trading state corresponding trade command in footpath is to write routing information trade command；It is corresponding with the release OBU stateful transactions
Trade command is release OBU trade commands.
It is preferred that, the stateful transaction of the OBU also includes reading information of vehicles stateful transaction, with the reading information of vehicles transaction
The corresponding trade command of state is reading information of vehicles trade command.
It is preferred that, included according to the stateful transaction that the feedback information updates corresponding OBU：
Feedback informations of the OBU for reading routing information trade command is received, changes the stateful transaction of the OBU to write path
Information trading state；
Or, reception OBU is directed to the feedback information for writing routing information trade command, change the stateful transaction of the OBU to release
Put OBU stateful transactions；
Or, feedback informations of the OBU for release OBU trade commands is received, delete the stateful transaction of the OBU；
Or, feedback informations of the OBU for search OBU orders is received, the stateful transaction of the OBU is set up to read routing information
Stateful transaction.
A kind of roadside unit RSU, the transaction for performing each OBU in its coverage in the concurrent mode of timesharing
Journey, the RSU includes：Transaction unit；
The transaction unit includes：
First transmitting element, for sending search OBU orders into the RSU coverages every preset time, if
Completion is not discharged in each process of exchange for sending search OBU order foregoing description RSU and any one OBU, then also to the OBU
Send the trade command corresponding with its current stateful transaction；
Updating block, waits the feedback information to be received for trade command and/or the feedback letter for searching for OBU orders
Breath, if receiving correct feedback information, corresponding OBU stateful transaction is updated according to the feedback information.
It is preferred that, in addition to：
Unit is set up, the queue for setting up the stateful transaction for being used to deposit OBU；
The updating block includes：First updates subelement, if for there is corresponding OBU transaction shape in queue
State, then change or delete the stateful transaction of corresponding OBU in the queue according to feedback information；
Second updates subelement, if for there is no corresponding OBU stateful transaction in queue, it is newly-built in queue
Corresponding OBU stateful transaction.
It is preferred that, in addition to：
Holding unit, for wait the feedback information to be received for trade command and/or for search OBU orders it is anti-
During feedforward information, in the case where not receiving feedback information or receiving the feedback information of mistake, the OBU is kept in the team
Stateful transaction in row is constant.
It is preferred that, in addition to：
Delete unit, do not change in N sections of preset times for stateful transactions of the OBU as described in queue, then from
The stateful transaction of the OBU is deleted in the queue, N is preset value, for the integer more than 1.
A kind of free streaming system, including RSU and OBU as described in above-mentioned any one；
The OBU is used for the trade command for responding the RSU and returns to the feedback information for being directed to trade command.
The application is due to being provided with the record of stateful transaction and the mechanism of renewal to OBU, therefore RSU at any time can
Each OBU stateful transaction is had a clear understanding of, so as to perform each OBU process of exchange in the concurrent mode of timesharing.With existing skill
Art is compared, and is accelerated OBU routing information identification process, is improved operating efficiency, and ID of trace route path is carried out to OBU so as to improve
Success rate.
Brief description of the drawings
In order to illustrate more clearly of the technical scheme in the embodiment of the present application, make required in being described below to embodiment
Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present application, for
For those of ordinary skill in the art, without having to pay creative labor, it can also be obtained according to these accompanying drawings
His accompanying drawing.
Fig. 1 is a kind of sub-process figure for the free flow board units OBU concurrent processing methods that the application is provided；
Fig. 2 is another sub-process figure for the free flow board units OBU concurrent processing methods that the application is provided；
Fig. 3 is the RSU that the application is provided and OBU a kind of transaction flow schematic diagram；
Fig. 4 is a kind of structural representation for the roadside unit RSU that the application is provided；
Fig. 5 is another structural representation for the roadside unit RSU that the application is provided；
Fig. 6 is a kind of structural representation for the electronic charging system without parking ETC that the application is provided.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present application, the technical scheme in the embodiment of the present application is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only some embodiments of the present application, rather than whole embodiments.It is based on
Embodiment in the application, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of the application protection.
Embodiment one
There is provided a kind of free flow OBU in the present embodiment（Board units, On board Unit）Concurrent processing method,
Positioned at the roadside unit RSU of ID of trace route path point, based on the record to each OBU stateful transaction in the RSU coverages,
The process of exchange of each OBU in the RSU coverages is performed in the concurrent mode of timesharing, wherein, in the concurrent mode of timesharing
Perform the process of exchange of each OBU RSU coverages Nei, i.e., in a period of time, the RSU and RSU coverages
Transaction between interior multiple OBU is all in having been turned on running between operation finishes.
Wherein, the process of exchange for performing each OBU in the RSU coverages in the concurrent mode of timesharing may refer to figure
1, Fig. 1 shows the free flow OBU that the application is provided（Board units, On board Unit）One seed of concurrent processing method
Flow chart, may comprise steps of：
Step S11：RSU sends search OBU orders into the RSU coverages every preset time, if each
The process of exchange for sending search OBU order foregoing description RSU and any one OBU does not discharge completions, then also sent to the OBU and
The corresponding trade command of its current stateful transaction.
Wherein, search OBU orders can send before trade command or be sent after trade command, also
Transmission among trade command can be interspersed in.
Step S12：The RSU etc. is to be received for the feedback information of trade command and/or for the anti-of search OBU orders
Feedforward information, if receiving correct feedback information, corresponding OBU stateful transaction is updated according to the feedback information, wherein,
Each OBU returns to for trade command or searched for the feedback information of OBU orders.
The application is due to being provided with the record of stateful transaction and the mechanism of renewal to OBU, therefore RSU at any time can
Each OBU stateful transaction is had a clear understanding of, so as to perform each OBU process of exchange in the concurrent mode of timesharing.With existing skill
Art is compared, and is accelerated OBU routing information identification process, is improved operating efficiency, and ID of trace route path is carried out to OBU so as to improve
Success rate.For example, in only 1 RSU situation, RSU is using first processing, order mode of doing business first in the prior art, simultaneously
There are 3 car for being loaded with OBU processes, RSU completes probably to need 150ms to an OBU progress ID of trace route path exchange hour, then suitable
The routing information that sequence mark completes 3 OBU at least needs 450ms.By the way of the timesharing that the application is proposed is concurrent, every time
RSU sends out trade command to 3 OBU, concurrently waits 3 OBU response, so completes the mark of a routing information probably
It is 150ms.It can be seen that in it there is the ETC Multi-path recognition free flow application systems of many car high-speed parallels, being provided using the application
Free flow board units OBU routing information identification methods greatly increase the mark success rates of OBU routing informations.
In the free streaming systems of ETC, it is topmost technical indicator that RSU, which carries out routing information mark success rate to OBU,.Into
The height of power determines whether the free streaming systems of ETC can be applied in intelligent transportation field.The application is realized pair simultaneously
By the OBU success flag routing informations of each car of ID of trace route path point, substantially increase RSU and routing information mark is carried out to OBU
The success rate of knowledge.
RSU carries out the raising that routing information identifies success rate to OBU, makes the free streaming systems of ETC in intelligent transportation field
Applied.The construction of beacon station is instead of, the input of manpower and materials is greatly reduced.To stop by beacon station with conventional car owner
Unlike car is swiped the card, car owner can pass through identification point at a high speed, very convenient, substantially increase the satisfaction of Consumer's Experience.
Embodiment two
In the present embodiment, free flow OBU a kind of to embodiment（Board units, On board Unit）Concurrent processing side
The implementation that each OBU stateful transaction in the RSU coverages is recorded in method is defined.
Specifically, the RSU performs the transaction of each OBU in the RSU coverages in the mode concurrent with timesharing
Before journey, the step of performing the queue for setting up the stateful transaction for being used for depositing OBU.It is described to need the step of set up queue
Just set up when using.
The queue that the RSU is set up is used for the stateful transaction for depositing OBU.
In the present embodiment, element can be designed as following form in queue：OBU_ID+TRAND_STATE.OBU_ID is
No. ID of OBU, TRAND_STATE is stateful transaction.
The queue for being used to deposit OBU stateful transaction set up based on the RSU, in the present embodiment, OBU transaction shape
State is recorded in the queue that RSU is set up, wherein, according to the specific of the corresponding OBU of feedback information renewal stateful transaction
Process may refer to Fig. 2, and Fig. 2 shows the another of the concurrent processing method for the free flow board units OBU that the application is provided
Sub-process figure, may comprise steps of：
Step S21：Judge whether there is corresponding OBU stateful transaction in queue.
In the case where having corresponding OBU stateful transaction during judged result is queue, step S22 is performed, otherwise, is performed
Step S23.
Step S22：The stateful transaction of corresponding OBU in the queue is changed or deleted according to feedback information.
The concrete mode for updating stateful transactions of each OBU in the queue is：Delete the original transaction shapes of each OBU
State, only retains the stateful transaction after updating, has saved queue space.
Step S23：The newly-built corresponding OBU stateful transaction in queue.
Judge there is no corresponding OBU stateful transaction in queue, that is to say, that OBU feedback information is for search OBU
Order feedback, then corresponding OBU stateful transaction is set up in queue.
In the present embodiment, RSU etc. is to be received for the feedback information of trade command and/or for search OBU orders
During feedback information, in the case where not receiving feedback information or receiving the feedback information of mistake, the OBU is kept described
Stateful transaction in queue is constant.
Certainly, in the present embodiment, RSU etc. is to be received for the feedback information of trade command and/or for search OBU lives
During the feedback information of order, in the case where not receiving feedback information or receiving the feedback information of mistake, the OBU is kept to exist
Stateful transaction in the queue is constant, and continues to send the feedback information not received when sending next time or receive mistake
The corresponding trade command of feedback information to OBU, if stateful transactions of the OBU in queue does not have in N sections of preset times
Change, then delete the stateful transaction of the OBU, N is preset value, for the integer more than 1 from the queue.
Preset value N can be set according to the actual requirements, and the concrete numerical value not to preset value N is defined herein.
After the stateful transaction that the OBU is deleted from the queue, queue space is discharged.
When the feedback information to be received for trade command such as RSU and/or feedback information for searching for OBU orders,
In the case of not receiving feedback information or receiving wrong feedback information, transaction of the OBU in the queue is kept
If the stateful transaction that state is constant and the OBU is in queue does not change in N sections of preset times, deleted from the queue
The exception handling during RSU and OBU are traded provided except the stateful transaction of the OBU for the application.
In this application, the RSU positioned at ID of trace route path point will receive corresponding OBU pins after search OBU orders are sent
To searching for after the feedback information of OBU orders, multiple independent transaction steps are split into corresponding OBU process of exchange, and often
One stateful transaction of individual transaction step correspondence, RSU performs corresponding transaction step according to the OBU of record stateful transaction.
It should be noted that the process for splitting into multiple independent transaction steps is the fractionation of non-physical, but virtual
Split.
It should be noted that OBU can't mark the stateful transaction of oneself in itself, OBU mentioned in this application friendship
Easy state is directed to the state that the transaction step for splitting process of exchange is named for RSU.
Wherein RSU can by receive any one OBU for search OBU orders feedback information after, with the OBU's
Process of exchange splits into 3 independent steps.
Wherein 3 independent steps, and each corresponding stateful transaction of step may refer to following table：
| Sequence number | Step | Stateful transaction（TRAND_STATE） |
| 1 | Read routing information | GET_ROUTE_INFO |
| 2 | Write routing information | SET_ROUTE_INFO |
| 3 | Discharge OBU | SET_EVENT_REPORT |
Wherein, GET_ROUTE_INFO is used to represent to read routing information stateful transaction, and SET_ROUTE_INFO is used to represent
Routing information stateful transaction is write, SET_EVENT_REPORT is used to represent release OBU stateful transactions.
As seen from the above table, RSU is after feedback informations of any one OBU for search OBU orders is received, with the OBU
Between process of exchange performed according to above-mentioned steps, the step of RSU is performed be followed successively by reading routing information, write routing information, release
OBU。
Trade command corresponding with the reading routing information stateful transaction is reading routing information trade command；Road is write with described
Information trading state corresponding trade command in footpath is to write routing information trade command；It is corresponding with the release OBU stateful transactions
Trade command is release OBU trade commands.
It is described to read routing information stateful transaction to be the RSU receiving that the OBU returns for search OBU orders
The state recorded after feedback information, the feedback information for search OBU orders is receiving the RSU hairs for the OBU
The information sent after the search OBU orders sent.
The routing information stateful transaction of writing is receiving being handed over for reading routing information for the OBU returns for the RSU
The state recorded after the feedback information easily ordered, it is described to exist for reading the feedback information of routing information trade command for the OBU
Receive the information sent after the reading routing information trade command that the RSU is sent.
The release OBU stateful transactions are that the RSU is receiving being ordered for writing routing information transaction for the OBU returns
The state recorded after the feedback information of order, it is described to be received for writing the feedback information of routing information trade command for the OBU
The information that is sent after routing information trade command is write to what the RSU was sent.
Specifically, referring to above-mentioned 3 stateful transactions, the corresponding trade command of 3 stateful transactions and for trade command
Feedback information, the process of corresponding OBU stateful transaction is updated according to the feedback information to be included：
Feedback informations of the OBU for reading routing information trade command is received, changes the stateful transaction of the OBU to write path
Information trading state；
Or, reception OBU is directed to the feedback information for writing routing information trade command, change the stateful transaction of the OBU to release
Put OBU stateful transactions；
Or, feedback informations of the OBU for release OBU trade commands is received, delete the stateful transaction of the OBU；
Or, feedback informations of the OBU for search OBU orders is received, the stateful transaction of the OBU is set up to read routing information
Stateful transaction.
In addition, referring to above-mentioned 3 stateful transactions, the corresponding trade command of 3 stateful transactions and for the anti-of trade command
Feedforward information, the queue for being used to deposit OBU stateful transaction set up based on RSU, corresponding OBU is updated according to the feedback information
The process of stateful transaction be specifically as follows：
Feedback informations of the OBU for reading routing information trade command is received, stateful transactions of the OBU in queue is changed
To write routing information stateful transaction；
Or, reception OBU is directed to the feedback information for writing routing information trade command, transaction of the OBU in queue is changed
State is release OBU stateful transactions；
Or, feedback informations of the OBU for release OBU trade commands is received, delete transaction shapes of the OBU in queue
State；
Or, feedback informations of the OBU for search OBU orders is received, it is reading to set up stateful transactions of the OBU in queue
Routing information stateful transaction.
Certainly, wherein RSU can by receive any one OBU for search OBU orders feedback information after, with this
OBU process of exchange splits into 4 independent steps.
Wherein 4 independent steps, and each corresponding stateful transaction of step may refer to following table：
| Sequence number | Step | Stateful transaction（TRAND_STATE） |
| 1 | Read information of vehicles | GET_SECURE |
| 2 | Read routing information | GET_ROUTE_INFO |
| 3 | Write routing information | SET_ROUTE_INFO |
| 4 | Discharge OBU | SET_EVENT_REPORT |
Wherein, GET_SECURE is used to represent to read information of vehicles stateful transaction, and GET_ROUTE_INFO is used to represent to read road
Footpath information trading state, SET_ROUTE_INFO writes routing information stateful transaction for expression, and SET_EVENT_REPORT is used for
Represent release OBU stateful transactions.
As seen from the above table, RSU is after feedback informations of any one OBU for search OBU orders is received, with the OBU
Between process of exchange performed according to above-mentioned steps, the step of RSU is performed be followed successively by reading information of vehicles, read routing information, write road
Footpath information, release OBU.
Trade command corresponding with the reading information of vehicles stateful transaction is reading information of vehicles trade command；With the reading road
Information trading state corresponding trade command in footpath is reading routing information trade command；With described to write routing information stateful transaction corresponding
Trade command to write routing information trade command；Trade command corresponding with the release OBU stateful transactions is handed over for release OBU
Easily order.
It is described to read information of vehicles stateful transaction to be the RSU receiving that the OBU returns for search OBU orders
The state recorded after feedback information, the feedback information for search OBU stateful transactions for the OBU receive it is described
The information sent after the search OBU trade commands that RSU is sent.
The routing information stateful transaction of reading is that the RSU is receiving being handed over for reading information of vehicles for the OBU returns
The state recorded after the feedback information easily ordered, it is described to exist for reading the feedback information of information of vehicles trade command for the OBU
Receive the information sent after the reading information of vehicles trade command that the RSU is sent.
The routing information stateful transaction of writing is receiving being handed over for reading routing information for the OBU returns for the RSU
The state recorded after the feedback information easily ordered, it is described to exist for reading the feedback information of routing information trade command for the OBU
Receive the information sent after the reading routing information trade command that the RSU is sent.
The release OBU stateful transactions are that the RSU is receiving being ordered for writing routing information transaction for the OBU returns
The state recorded after the feedback information of order, it is described to be received for writing the feedback information of routing information trade command for the OBU
The information that is sent after routing information trade command is write to what the RSU was sent.
Specifically, when process of exchange being split as into 4 independent steps referring to RSU, corresponding 4 stateful transactions, 4 friendships
The easy corresponding trade command of state and the feedback information for trade command, update corresponding OBU's according to the feedback information
The process of stateful transaction includes：
Feedback informations of the OBU for reading information of vehicles trade command is received, stateful transactions of the OBU in queue is updated
To read routing information stateful transaction；
Or, feedback informations of the OBU for reading routing information trade command is received, the stateful transaction of the OBU is changed to write
Routing information stateful transaction；
Or, reception OBU is directed to the feedback information for writing routing information trade command, change the stateful transaction of the OBU to release
Put OBU stateful transactions；
Or, feedback informations of the OBU for release OBU trade commands is received, delete the stateful transaction of the OBU；
Or, feedback informations of the OBU for search OBU orders is received, the stateful transaction of the OBU is set up to read information of vehicles
Stateful transaction.
When process of exchange being split as into 4 independent steps with reference to RSU, corresponding 4 stateful transactions, 4 stateful transactions
Corresponding trade command and the feedback information for trade command, citing to the OBU to sending corresponding with its stateful transaction
The process of trade command illustrate.For example, being respectively OBU0 and OBU1 with the RSU OBU merchandised, if OBU0 stateful transaction
To read vehicle information states（GET_SECURE）, then RSU sent and OBU0 reading vehicle information states to OBU0（GET_
SECURE）Corresponding reading information of vehicles trade command.If OBU1 stateful transaction is reading routing information state（GET_ROUTE_
INFO）, then RSU sent and OBU1 reading routing information state to OBU1（GET_ROUTE_INFO）Corresponding reading routing information
Trade command.
When process of exchange being split as into 4 independent steps with reference to RSU, corresponding 4 stateful transactions, 4 stateful transactions
Corresponding trade command and the feedback information for trade command, any one OBU is being received for search OBU lives to RSU
After the feedback information of order, the process of exchange between the OBU is illustrated.First by taking an OBU as an example, such as RSU is being sent
Search for after OBU orders, receive feedback informations of the OBU0 for search OBU orders, OBU0 stateful transaction is then updated to by RSU
Information of vehicles stateful transaction is read, RSU sends corresponding with OBU0 reading information of vehicles stateful transaction to OBU0 when next time sends
Read information of vehicles trade command；If RSU receives the feedback information for reading information of vehicles trade command of OBU0 returns, RSU
Then OBU0 stateful transaction is updated to read routing information stateful transaction, when sending next time, RSU is sent with OBU0's to OBU0
Read the corresponding reading routing information trade command of routing information stateful transaction；If RSU receives being directed to for OBU0 returns and reads path
OBU0 stateful transaction is then updated to write routing information stateful transaction by the feedback information of information trading order, RSU, in hair next time
When sending RSU to OBU0 send with OBU0 write routing information stateful transaction it is corresponding write routing information trade command；If RSU connects
The feedback information for writing routing information trade command of OBU0 returns is received, OBU0 stateful transaction then is updated to release by RSU
OBU stateful transactions are put, RSU sends the release OBU corresponding with OBU0 release OBU stateful transactions to OBU0 when sending next time
Trade command；If RSU receives feedback informations of the OBU0 for release OBU trade commands, the stateful transaction of the OBU0 is deleted.
When RSU receives the feedback information for discharging OBU trade commands of OBU0 returns, RSU terminates with OBU0's
Process of exchange, completes to identify OBU0 routing information.
RSU searches for OBU orders from transmission, receives feedback informations of the corresponding OBU for search OBU orders, Yi Jijie
After corresponding OBU is received for the feedback information of search OBU orders, the process of exchange between the OBU may refer to Fig. 3, Fig. 3
The RSU and OBU of the application offer a kind of transaction flow schematic diagram are provided.
In addition, when process of exchange being split as into 4 independent steps referring to RSU, corresponding 4 stateful transactions, 4 transaction
The corresponding trade command of state and the feedback information for trade command, the stateful transaction for being used to deposit OBU set up based on RSU
Queue, the process that corresponding OBU stateful transaction is updated according to the feedback information is specifically as follows：
Feedback informations of the OBU for reading information of vehicles trade command is received, stateful transactions of the OBU in queue is changed
To read routing information stateful transaction；
Or, feedback informations of the OBU for reading routing information trade command is received, change transaction of the OBU in queue
State is to write routing information stateful transaction；
Or, reception OBU is directed to the feedback information for writing routing information trade command, transaction of the OBU in queue is changed
State is release OBU stateful transactions；
Or, feedback informations of the OBU for release OBU trade commands is received, delete transaction shapes of the OBU in queue
State；
Or, feedback informations of the OBU for search OBU orders is received, it is reading to set up stateful transactions of the OBU in queue
Information of vehicles stateful transaction.
For foregoing each method embodiment, in order to be briefly described, therefore it is all expressed as to a series of combination of actions, but
It is that those skilled in the art should know, the application is not limited by described sequence of movement, because according to the application, certain
A little steps can be carried out sequentially or simultaneously using other.Secondly, those skilled in the art should also know, be retouched in specification
The embodiment stated belongs to preferred embodiment, necessary to involved action and module not necessarily the application.
Embodiment three
It is corresponding with above method embodiment, this application provides a kind of roadside unit RSU, Fig. 4 is referred to, Fig. 4 is shown
A kind of structural representation for the roadside unit RSU that the application is provided, roadside unit RSU is used to perform in the concurrent mode of timesharing
Each OBU process of exchange in its coverage, roadside unit RSU includes：Transaction unit 41, wherein transaction unit 41 include the
One transmitting element 411 and updating block 412.
First transmitting element 411, for sending search OBU orders into the RSU coverages every preset time, such as
Fruit does not discharge completion in each process of exchange for sending search OBU order foregoing description RSU and any one OBU, then also to this
OBU sends the trade command corresponding with its current stateful transaction；
Updating block 412, waits the feedback information to be received for trade command and/or the feedback for searching for OBU orders
Information, if receiving correct feedback information, corresponding OBU stateful transaction is updated according to the feedback information, wherein, often
Individual OBU returns to for trade command or searched for the feedback information of OBU orders.
Example IV
In the present embodiment, another roadside unit RSU is expanded on the basis of the roadside unit RSU shown in Fig. 4,
Fig. 5 is referred to, the roadside unit RSU provided it illustrates the application another structural representation is also wrapped on the basis of Fig. 4
Include：Set up unit 51.
Unit 51 is set up, the queue for setting up the stateful transaction for being used to deposit OBU.
In the present embodiment, updating block 412 can specifically include：First, which updates subelement and second, updates subelement,
First updates subelement, if for there is corresponding OBU stateful transaction in queue, being repaiied according to feedback information
Change or delete the stateful transaction of corresponding OBU in the queue
Second updates subelement, if for there is no corresponding OBU stateful transaction in queue, it is newly-built in queue
Corresponding OBU stateful transaction.
Roadside unit RSU shown in Fig. 5 can also include：Holding unit, for waiting to be received for trade command
When feedback information and/or the feedback information for search OBU orders, feedback information is not being received or the feedback of mistake is received
In the case of information, keep stateful transactions of the OBU in the queue constant.
Roadside unit RSU shown in Fig. 5 can also include：Unit is deleted, for transaction shapes of the OBU as described in queue
State does not change in N sections of preset times, then the stateful transaction of the OBU is deleted from the queue, and N is preset value, is big
In 1 integer.
Embodiment five
In the present embodiment there is provided a kind of free streaming system, Fig. 6 is referred to, Fig. 6 shows the freedom that the application is provided
A kind of structural representation of streaming system, free streaming system includes：RSU61 and OBU62.RSU61 concrete structure and function and reality
Apply example three identical with RSU involved in example IV, for details, reference can be made to embodiment three and example IV.
The OBU62 is used for the trade command for responding the RSU61 and returns to the feedback information for being directed to trade command.
It should be noted that each embodiment in this specification is described by the way of progressive, each embodiment weight
Point explanation be all between difference with other embodiment, each embodiment identical similar part mutually referring to.
For device class embodiment, because it is substantially similar to embodiment of the method, so description is fairly simple, related part is joined
See the part explanation of embodiment of the method.
Finally, in addition it is also necessary to explanation, herein, such as first and second or the like relational terms be used merely to by
One entity or operation make a distinction with another entity or operation, and not necessarily require or imply these entities or operation
Between there is any this actual relation or order.Moreover, term " comprising ", "comprising" or its any other variant meaning
Covering including for nonexcludability, so that process, method, article or equipment including a series of key elements not only include that
A little key elements, but also other key elements including being not expressly set out, or also include be this process, method, article or
The intrinsic key element of equipment.In the absence of more restrictions, the key element limited by sentence " including one ... ", not
Also there is other identical element in the process including the key element, method, article or equipment in exclusion.
For convenience of description, it is divided into various units during description apparatus above with function to describe respectively.Certainly, this is being implemented
The function of each unit can be realized in same or multiple softwares and/or hardware during application.
Free flow board units concurrent processing method, roadside unit and free streaming system provided herein are entered above
Go and be discussed in detail, specific case used herein is set forth to the principle and embodiment of the application, the above is implemented
The explanation of example is only intended to help and understands the present processes and its core concept；Simultaneously for the general technology people of this area
Member, according to the thought of the application, will change in specific embodiments and applications, in summary, this explanation
Book content should not be construed as the limitation to the application.
Claims (10)
1. a kind of free flow board units OBU concurrent processing methods, it is characterised in that positioned at the roadside unit of ID of trace route path point
RSU sets up the queue of the stateful transaction for depositing OBU, and performs each OBU in its coverage in the concurrent mode of timesharing
Process of exchange, in a period of time, transaction in RSU the and RSU coverages between multiple OBU is all in having been turned on
Run between operation finishes, the process of exchange includes：
A, the RSU send search OBU orders into the RSU coverages every preset time, if searched in each transmission
Rope OBU order foregoing description RSU and any one OBU process of exchange does not discharge completion, then also sends current with it to the OBU
The corresponding trade command of stateful transaction；
The feedback information to be received for the feedback information of trade command and/or for searching for OBU orders such as B, the RSU, if
Correct feedback information is received, then judges whether there is corresponding OBU stateful transaction in queue, if having described corresponding in queue
OBU stateful transaction, then change or delete the stateful transaction of corresponding OBU described in the queue according to feedback information；If
There is no corresponding OBU stateful transaction in queue, then in queue newly-built corresponding OBU stateful transaction.
2. according to the method described in claim 1, it is characterised in that the feedback letter to be received for trade command such as described RSU
When breath and/or the feedback information for search OBU orders, feedback information is not being received or wrong feedback information is received
In the case of, keep stateful transactions of the OBU in the queue constant.
3. according to the method described in claim 1, it is characterised in that stateful transactions of the OBU in queue is default at N sections as described
Do not change in time, then the stateful transaction of the OBU is deleted from the queue, N is preset value, for the integer more than 1.
4. the method according to claim 1-3 any one, it is characterised in that the stateful transaction of the OBU includes：
Read routing information stateful transaction, write routing information stateful transaction and release OBU stateful transactions；
Trade command corresponding with the reading routing information stateful transaction is reading routing information trade command；Path letter is write with described
The corresponding trade command of breath stateful transaction is to write routing information trade command；Transaction corresponding with the release OBU stateful transactions
Order as release OBU trade commands.
5. method according to claim 4, it is characterised in that the stateful transaction of the OBU also includes reading information of vehicles friendship
Easy state, trade command corresponding with the reading information of vehicles stateful transaction is reading information of vehicles trade command.
6. method according to claim 4, it is characterised in that corresponding OBU transaction is updated according to the feedback information
State includes：
Feedback informations of the OBU for reading routing information trade command is received, changes the stateful transaction of the OBU to write routing information
Stateful transaction；
Or, reception OBU is directed to the feedback information for writing routing information trade command, it is release OBU to change the stateful transaction of the OBU
Stateful transaction；
Or, feedback informations of the OBU for release OBU trade commands is received, delete the stateful transaction of the OBU；
Or, feedback informations of the OBU for search OBU orders is received, the stateful transaction of the OBU is set up to read routing information transaction
State.
7. a kind of roadside unit RSU, it is characterised in that the queue for setting up the stateful transaction for being used to deposit OBU, and with timesharing
Concurrent mode performs the process of exchange of each OBU its coverage Nei, in a period of time, and the RSU and RSU covers model
Transaction between interior multiple OBU is enclosed all in having been turned on running between operation finishes, and the RSU includes：Transaction unit；
The transaction unit includes：
First transmitting element, for sending search OBU orders into the RSU coverages every preset time, if every
The secondary process of exchange for sending search OBU order foregoing description RSU and any one OBU does not discharge completion, then is also sent to the OBU
The trade command corresponding with its current stateful transaction；
Updating block, waits the feedback information to be received for trade command and/or the feedback information for searching for OBU orders, if
Correct feedback information is received, then judges whether there is corresponding OBU stateful transaction in queue, if having described corresponding in queue
OBU stateful transaction, then change or delete the stateful transaction of corresponding OBU described in the queue according to feedback information；If
There is no corresponding OBU stateful transaction in queue, then in queue newly-built corresponding OBU stateful transaction.
8. RSU according to claim 7, it is characterised in that also include：
Holding unit, for waiting the feedback information to be received for trade command and/or the feedback letter for search OBU orders
During breath, in the case where not receiving feedback information or receiving the feedback information of mistake, the OBU is kept in the queue
Stateful transaction it is constant.
9. RSU according to claim 7, it is characterised in that also include：
Unit is deleted, is not changed in N sections of preset times for stateful transactions of the OBU as described in queue, then from described
The stateful transaction of the OBU is deleted in queue, N is preset value, for the integer more than 1.
10. a kind of free streaming system, it is characterised in that including the RSU and OBU as described in claim 7-9 any one；
The OBU is used for the trade command for responding the RSU and returns to the feedback information for being directed to trade command.
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| CN201410122923.4A CN104574533B (en) | 2014-03-28 | 2014-03-28 | Free flow board units concurrent processing method, roadside unit and free streaming system |
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| CN201410122923.4A CN104574533B (en) | 2014-03-28 | 2014-03-28 | Free flow board units concurrent processing method, roadside unit and free streaming system |
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| CN102568048A (en) * | 2012-02-01 | 2012-07-11 | 北京握奇数据系统有限公司 | Roadside equipment, method and system for carrying out service processing on multi-lane free flow |
| CN102622782B (en) * | 2012-03-26 | 2014-10-15 | 广州新软计算机技术有限公司 | Automatic toll collection method based on two-dimensional space |
| CN103136805B (en) * | 2013-02-01 | 2016-05-18 | 华中科技大学 | Board units-roadside unit Free-flow charging mode method of commerce |
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