CN107426706A - Update method of mobile object location based on mobile opportunistic network and payment networks - Google Patents
Update method of mobile object location based on mobile opportunistic network and payment networks Download PDFInfo
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- CN107426706A CN107426706A CN201710425108.9A CN201710425108A CN107426706A CN 107426706 A CN107426706 A CN 107426706A CN 201710425108 A CN201710425108 A CN 201710425108A CN 107426706 A CN107426706 A CN 107426706A
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- mobile object
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W40/00—Communication routing or communication path finding
- H04W40/02—Communication route or path selection, e.g. power-based or shortest path routing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W40/00—Communication routing or communication path finding
- H04W40/24—Connectivity information management, e.g. connectivity discovery or connectivity update
- H04W40/32—Connectivity information management, e.g. connectivity discovery or connectivity update for defining a routing cluster membership
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Abstract
The invention discloses the update method of mobile object location based on mobile opportunistic network and payment networks, and two stages are reported comprising information and information.The former includes the vehicle for when vehicle is triggered and updated, inquiring surrounding, and the positional information of the vehicle by meeting condition based on the free moving machine meeting network collections of WiFi P2P；The latter includes GPRS, GSM by free mobile opportunistic network or payment, and combines two jump mechanisms of mobile opportunistic network, and most positional information is sent to server at last.The present invention is reported by position and mobile opportunistic network is combined, and by way of " storage carries forwarding ", and combines two jump mechanisms, the hop count of packet is limited within double bounce, so as to reach optimal forwarding effect；In the selection of forwarding object, screening forwarding is carried out according to the vehicle ratio of the upper limit of forwarding copy and different directions, ensure that information is accurately sent to server much sooner to the full extent, greatly reduce the communication overhead of payment networks.
Description
Technical field
The invention belongs to the mobility data processing field of cordless communication network, and in particular to one kind base on city road network
In mobile opportunistic network and the update method of mobile object location of payment networks.
Background technology
At present, as the widespread deployment of global positioning system and the rapid development of computer technology, people can be with office
Meaning time, place, obtain and issue the positional information of mobile object in any way.In the application based on mobile object management
In, mobile terminal constantly reports the latest position of oneself by communication network to database server, server storage, index, divides
Analyse the location dependent information of mobile object, the various inquiry requests of customer in response end (mobile terminal or desktop system).
Mobile opportunistic network be it is a kind of need not have between the start node of communication and destination node one it is fixed complete
Site preparation path, but the chance of meeting created by node motion is and traffic carried.Traditional communication is by certain base station
To ensure the connection between communication node so as to complete to communicate.But it is weaker in some signals, or signal blind zone even some
The adverse circumstances of base station facility can not be disposed, traditional communication mode cannot meet the needs of people share information and service,
And move opportunistic network and just filled up this defect.WiFi P2P are a kind of point-to-point connection technologies, it is allowed to which application program exists
Neighbouring equipment is quickly searched in certain limit without going through focus or internet, and is interacted, can as bluetooth
Freely to transmit file, but considerably beyond the ability of bluetooth on join domain.
In terms of location updating, more new strategy mainly has Fixed Time Interval renewal, the renewal of fixed door limit value, adaptive answered the door
Limit value renewal, disconnection detection more new strategy etc., this several strategy has respective advantage and disadvantage, and every kind of strategy is all basis
Concrete condition and propose, a not unified more new architecture.In article《Techniques for Eficient
Road-Network-Based Tracking of Moving Obejcts》In put forward based on the time, direction, section.If
Vehicle is in congested link, and travel speed slowly even comes to a halt very much, and time-based renewal will result in the wasting of resources.
Substantial amounts of vehicle is generally had in city road network, in same path or one piece of region running, in order in server end
Follow the trail of the latest position of vehicle, vehicle constantly reports the latest position of oneself according to certain strategy to server, no matter on
Which kind of strategy is stated, each vehicle can all be sent once when trigger position updates by the GPRS (or GSM) of payment to server
The position of oneself.The thousands of vehicle and its frequently position is changed on road network, the communication cost of report are and its high
High.
In above-mentioned research, the problem of each information of vehicles collects communication cost costliness in report is not accounted for, is not had yet
The location updating of mobile opportunistic network and mobile object is combined.
The content of the invention
The technical problems to be solved by the invention are overcome the deficiencies in the prior art, there is provided one kind can net based on moving machine
The location updating method of network and payment networks, using based on mobile opportunistic network free WiFi P2P, solves road well
Expensive payment networks overhead issues required for online magnanimity vehicle location renewal.
For this purpose, the present invention use technical scheme for based on the mobile object position for moving opportunistic network and payment networks
Update method is put, is comprised the steps of：
First, information：When vehicle, which triggers, to be updated, inquire the vehicle of surrounding, and by based on WiFi P2P freely
Moving machine meeting network collection meets the positional information of the vehicle of condition；
2nd, information is reported：By free mobile opportunistic network or GPRS, GSM of payment, and combine mobile opportunistic network
Two jump mechanisms, most positional information is sent to server at last.
Further, above- mentioned information is collected and specifically comprised the following steps：
Step 1：Mobile object MO positional information is compared with the positional information that the last time reports, distance differs by more than
When given threshold alpha or mobile object MO drives into new section, mobile object MO triggering renewals are, it is necessary to carry out position report；
Step 2：All vehicles in MO inquiry moving machine meeting network ranges, if need to carry out location updating；
Step 3：The mobile object of inquiry message is received according to the more new strategy in step 1, checks whether oneself needs
Carry out location updating；
Step 4：Following three kinds of situations are distinguished to be handled：
Situation a：Any response need not be made if location updating is not needed；
Situation b:If receiving the mobile object of inquiry message needs location updating, but itself is just in the movement of base station
In opportunistic network signal coverage, information is directly reported to base station, given a response without the inquiry to MO；
Situation c：If receiving the mobile object of inquiry message needs location updating, and the mobile object is not believed in base station
In number coverage, then positional information is sent to MO by the mobile object by mobile opportunistic network, using MO is poly- so as to be formed
One mobile object at cluster center clusters.
Further, enter row information report for the above situation c to specifically comprise the following steps：
Step 1：Judgement, which clusters, represents MO whether in the range of base station movement chance networking；
Step 2：If in the range of, positional information is directly reported to by base station by mobile opportunistic network, serviced
Device end is inquired about and indexed for user；
Step 3：If MO not in the range of, using meeting between moving machine meeting nodes, forwards the information to it
His mobile object, most positional information is sent to base station at last；
Step 4：For forwarding concretely comprising the following steps for object select in step 3：
4.1：Definition, which clusters, to be represented the MO direction of motion and is defined as D as D, direction in contrast-1；
4.2：Defining packet once allows to forward the upper limit of copy to be L；
4.3：Motion process can monitor to represent that the MO directions of motion are identical, and direction D, vehicle presses speed with clustering in
Descending arrangement, is denoted as (MD1,MD2,MD3,MD4......MDn), vehicle fleet size ND；It is in opposite direction therewith, direction D-1
Vehicle by speed it is descending arrangement be denoted asVehicle fleet amount is
4.4：According to above-mentioned definition, selection is once at most sent to equidirectional vehicle number and isAnd
Screening forwarding is carried out according to speed is descending；Choosing most vehicle numbers for being sent to opposite direction is
Screening forwarding is carried out also according to speed is descending；A mark is done in the data being forwarded simultaneously is, turns to identify
Send out hop count；
Step 5：In step 3,4 implementation procedure, vehicle sends information once driving in the range of base station signal
Go out, constantly detect data during this simultaneously whether in the range of tolerant of delay and hop count, be labeled the T of data not
It can again be forwarded, once exceeding tolerant of delay, then directly be transmitted directly to server using the GPRS or GSM of payment.
In above-mentioned steps 4, the information that cluster is using based on mobile opportunistic network free WiFi P2P.
In above-mentioned steps 3, the mode to the forwarding of road network middle position confidence breath using " storage-carrying-forwarding ", and combine
Double bounce forwarding mechanism, so as to reaching optimal forwarding effect.
In above-mentioned steps 4, the choosing method of object is forwarded, is comprised the following steps that：
1. clustering and representing the MO direction of motion D is defined as D, direction in contrast-1；
2. packet once allows to forward the upper limit of copy to be L；
3. motion process can monitor to represent that the MO directions of motion are identical (direction as D), and vehicle presses speed with clustering in
Descending arrangement, is denoted as (MD1,MD2,MD3,MD4......MDn), vehicle fleet size ND；(direction D in opposite direction therewith-1)
Vehicle by speed it is descending arrangement be denoted asVehicle fleet size isAccording to
Above-mentioned definition, selection are once at most sent to equidirectional vehicle number and areIt is and descending according to speed
Carry out screening forwarding；Choosing most vehicle numbers for being sent to opposite direction isSimilarly according to velocity magnitude
Carry out screening forwarding；
The method used during report is by based on mobile opportunistic network free WiFi P2P and traditional payment
The mode that network is combined.
Further, the condition of the Road online mobile objects trigger renewal of above-mentioned steps 1 is：More than given threshold alpha and
Vehicle drives into new section.
Using above-mentioned technical proposal, prior art is contrasted, the present invention has following innovative point and advantage：
(1) on the road network of mobile object enormous amount, when mobile object, which triggers, to be updated, it is necessary to carry out position report,
The present invention carries out the information that clusters using based on the free mobile opportunistic networks of WiFi P2P, reduces in infonnation collection process
Caused network service cost.
(2) present invention reports the position in mobile data management field and mobile opportunistic network is combined, by " storage-
The mode of carrying-forwarding ", and two jump mechanisms are combined, the advantage and disadvantage that this mechanism has considered flooding mechanism and directly waited,
The hop count of packet is limited within double bounce, so as to reach optimal forwarding effect；In the selection of forwarding object, root
According to the upper limit of forwarding copy and the vehicle ratio of different directions, and combine velocity magnitude sequence and carry out screening forwarding, so most
It ensure that information is accurately sent to server much sooner in big degree.
(3) during positional information is reported to server, the present invention (is based on WiFi using free mobile opportunistic network
P2P) and payment the modes that are combined of GPRS (or GSM), compare, substantially reduce with traditional complete network using payment
The communication overheads of payment networks.
Brief description of the drawings
The city road network mobile object location renewal frame diagram of Fig. 1 present invention.
The mobile object triggering renewal figure of Fig. 2 present invention.
Fig. 3 information schematic diagrames of the present invention.
The overall flow figure of the report that clusters of Fig. 4 information reporting modules of the present invention.
Fig. 5 information of the present invention reports schematic diagram.
Embodiment
Embodiments of the present invention are described with reference to Figure of description.The present invention is that one kind is based on moving machine meeting
The method that the position of network and payment networks is collected, reported, by using can net based on the free moving machine of WiFi P2P technologies
Information and the cost on network communication reported greatly reduces in network, largely solves above mentioned problem.
As shown in figure 1, the management of road online mobile data includes mobile object on road network, the index of server, storage,
Analyze, the client query of user, the continuous trigger position renewal of the vehicle on road network, the position of oneself is reported to server, is taken
Business device receives information and improves row redundancy by additions and deletions and eliminates, for the inquiry of user's progress promptly and accurately, so as to convenient trip
Vehicle understands traffic, selects more preferable trip route.The emphasis of the present invention focuses primarily on the left side-mobile terminal of Organization Chart.
As shown in Fig. 2 MO1 and MO2 is moving traffic on city road network, a certain moment MO1, MO2 are travelled respectively
To MO1 ' and MO2 ' position.MO1 enters section 2 from section 1 by crossing, on MO2 running sections 3, between MO2 and MO2 '
Distance all reaches the condition of triggering renewal, now to carry out location updating more than 100m (threshold alpha is arranged to 100m herein).
As shown in figure 3, MO is the above-mentioned vehicle for needing to carry out location updating, it inquires the institute in WiFi P2P network ranges
Have whether vehicle needs to report positional information, the vehicle for being connected to inquiry message is judged according to more new strategy.By judging, car
M is unsatisfactory for update condition, is not required to give a response；Vehicle n needs location updating but vehicle n is just in base station network signal up to model
In enclosing, it is not required that give a response, in reporting module, positional information is directly sent to base station by vehicle n by WiFi P2P；Car
O, vehicle p, vehicle q are required for position to report, and do not have that base station movement opportunistic network is reachable around them, then vehicle o, p, q
Need respective positional information to be sent to MO by WiFi P2P, material is thus formed just turn into the representative that clusters with MO.
If Fig. 4 is the report flow chart containing the representative that clusters, clustering represents MO and collects after information, it is necessary to by itself and collect
To the positional informations of other vehicles be sent to server.First determine whether to cluster and represent MO whether in the range of server signal,
As shown in figure 3, the information being collected into the range of, is then directly sent to server by MO；Such as Fig. 5, MO is not in server signal
In the range of, then needing to be met using the node of mobile opportunistic network is forwarded.Assuming that the copy upper limit L of forwarding is 5, network model
That encloses that interior vehicle and MO travel (direction D) in the same direction has 8 (ND), backward going (direction D-1) have 12Root
According toThe number of copies forwarded in the same direction is 2, and maximum 2 cars of screening car speed are forwarded；According toThe number of copies reversely forwarded is 3, and maximum 3 cars of screening car speed are forwarded, and in the letter of forwarding
Subscript T is on breath；
Above-mentioned vehicle in the process of moving, once into information being sent once in the range of base station signal, while constantly
Detection data whether in the range of tolerant of delay and hop count, marked T data can not be forwarded again, once more than holding
Bear time delay, be then directly transmitted directly to server using the GPRS or GSM of payment.Be finally completed vehicle position information collect,
The whole process of report.
Claims (8)
1. the update method of mobile object location based on mobile opportunistic network and payment networks, it is characterised in that include following step
Suddenly：
First, information：When vehicle, which triggers, to be updated, the vehicle of surrounding is inquired, and by based on movement free WiFi P2P
Opportunistic network collects the positional information of the vehicle for the condition that meets；
2nd, information is reported：By free mobile opportunistic network or GPRS, GSM of payment, and combine the two of mobile opportunistic network
Jump mechanism, most positional information is sent to server at last.
2. the update method of mobile object location according to claim 1 based on mobile opportunistic network and payment networks, its
It is characterised by that information specifically comprises the following steps：
Step 1：Mobile object MO positional information is compared with the positional information that the last time reports, distance differs by more than given
Threshold alpha or mobile object MO when driving into new section, mobile object MO triggering renewals are, it is necessary to carry out position report；
Step 2：All vehicles in MO inquiry moving machine meeting network ranges, if need to carry out location updating；
Step 3：The mobile object of inquiry message is received according to the more new strategy in step 1, whether check oneself needs to carry out
Location updating；
Step 4：Following three kinds of situations are distinguished to be handled：
Situation a：Any response need not be made if location updating is not needed；
Situation b:If receiving the mobile object of inquiry message needs location updating, but itself is just in the moving machine meeting of base station
In network signal coverage, information is directly reported to base station, given a response without the inquiry to MO；
Situation c：If receiving the mobile object of inquiry message needs location updating, and the mobile object can not in base station signal
In the range of reaching, then positional information is sent to MO by the mobile object by mobile opportunistic network, so as to formed using MO to cluster in
One mobile object of the heart clusters.
3. the update method of mobile object location according to claim 2 based on mobile opportunistic network and payment networks, its
It is characterised by that entering row information report for situation c specifically comprises the following steps：
Step 1：Judgement, which clusters, represents MO whether in the range of base station movement chance networking；
Step 2：If in the range of, positional information is directly reported to by base station by mobile opportunistic network, in server end
Inquire about and index for user；
Step 3：If MO not in the range of, using meeting between moving machine meeting nodes, forwards the information to other shiftings
Dynamic object, most positional information is sent to base station at last；
Step 4：For forwarding concretely comprising the following steps for object select in step 3：
4.1：Definition, which clusters, to be represented the MO direction of motion and is defined as D as D, direction in contrast-1；
4.2：Defining packet once allows to forward the upper limit of copy to be L；
4.3：Motion process can be monitored in identical, the direction D that represents the MO directions of motion of clustering, vehicle is by speed by big
To minispread, (M is denoted asD1,MD2,MD3,MD4......MDn), vehicle fleet size ND；It is in opposite direction therewith, direction D-1Car
By speed it is descending arrangement be denoted asVehicle fleet amount is
4.4：According to above-mentioned definition, selection is once at most sent to equidirectional vehicle number and isAnd according to
Speed is descending to carry out screening forwarding；Choosing most vehicle numbers for being sent to opposite direction isSimilarly
Screening forwarding is carried out according to speed is descending；A mark is done in the data being forwarded simultaneously is, to identify that forwarding is jumped
Number；
Step 5：In step 3,4 implementation procedure, vehicle sends information once driving in the range of base station signal,
Data are constantly detected during this simultaneously whether in the range of tolerant of delay and hop count, the T for being labeled data can not be again
It is secondary to be forwarded, once exceeding tolerant of delay, then directly it is transmitted directly to server using the GPRS or GSM of payment.
4. the update method of mobile object location according to claim 3 based on mobile opportunistic network and payment networks, its
It is characterised by carrying out clustering in step 4 information using based on mobile opportunistic network free WiFi P2P.
5. the update method of mobile object location according to claim 3 based on mobile opportunistic network and payment networks, its
The mode using " storage-carrying-forwarding " to the forwarding of road network middle position confidence breath is characterised by step 3, and combines two
Forwarding mechanism is jumped, so as to reach optimal forwarding effect.
6. the update method of mobile object location according to claim 3 based on mobile opportunistic network and payment networks, its
It is characterised by forwarding the choosing method of object in step 4, comprises the following steps that：
1. clustering and representing the MO direction of motion D is defined as D, direction in contrast-1；
2. packet once allows to forward the upper limit of copy to be L；
3. motion process can be monitored in identical, the direction D that represents the MO directions of motion of clustering, vehicle by speed by greatly to
Minispread, it is denoted as (MD1,MD2,MD3,MD4......MDn), vehicle fleet size ND；It is in opposite direction therewith, direction D-1Vehicle
It is denoted as by the descending arrangement of speedVehicle fleet size isAccording to above-mentioned
Definition, selection are once at most sent to equidirectional vehicle number and areAnd according to the descending progress of speed
Screening forwarding；Choosing most vehicle numbers for being sent to opposite direction isSimilarly carried out according to velocity magnitude
Screening forwarding.
7. the update method of mobile object location according to claim 3 based on mobile opportunistic network and payment networks, its
It is characterised by：The method used during report is by based on mobile opportunistic network free WiFi P2P and traditional payment
The mode that network is combined.
8. the update method of mobile object location according to claim 2 based on mobile opportunistic network and payment networks, its
It is characterised by：The condition of step 1 Road online mobile objects trigger renewal is：Sailed more than given threshold alpha and vehicle
Enter new section.
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Application publication date: 20171201 |