CN109104708A - It is a kind of about established between move vehicle D2D communication connection pair selection method - Google Patents
It is a kind of about established between move vehicle D2D communication connection pair selection method Download PDFInfo
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- CN109104708A CN109104708A CN201810812333.2A CN201810812333A CN109104708A CN 109104708 A CN109104708 A CN 109104708A CN 201810812333 A CN201810812333 A CN 201810812333A CN 109104708 A CN109104708 A CN 109104708A
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- 238000004891 communication Methods 0.000 title claims abstract description 57
- 238000010187 selection method Methods 0.000 title claims abstract description 12
- 230000005540 biological transmission Effects 0.000 claims description 7
- 230000000644 propagated effect Effects 0.000 claims description 3
- 238000000926 separation method Methods 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 abstract description 5
- 230000006855 networking Effects 0.000 abstract description 3
- 206010039203 Road traffic accident Diseases 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000000007 visual effect Effects 0.000 description 2
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/30—Services specially adapted for particular environments, situations or purposes
- H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
- H04W4/46—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P] for vehicle-to-vehicle communication [V2V]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/08—Load balancing or load distribution
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
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Abstract
The present invention relates to a kind of about the selection method for establishing D2D communication connection pair between move vehicle, belongs to car networking traffic communication technical field.The corresponding D2D communication technology for being used in move vehicle short-distance wireless communication of the present invention is analyzed, for the dynamic of the communication link as caused by speed and distance variable, propose a kind of selection method of D2D communication connection, by considering the distance parameter locating for vehicle between runway and vehicle, estimate the channel quality of D2D connection pair, finally derive the selection priority index of inter-vehicular communication connection, optimal communication object is selected according to the index, carries out the connection of D2D communication pair and transmits message.Invention compared with prior art, largely improves the life span and communications rate of communication link, while reducing the outage probability between communication.
Description
Technical field
The present invention relates to a kind of about the selection method for establishing D2D communication connection pair between move vehicle, belongs to car networking friendship
Logical field of communication technology.
Background technique
At present car networking communication in, generally use Dedicated Short Range Communications technology, but this technology have one it is larger
The drawbacks of, it is easy to appear the scalability problem of traffic information network, the efficiency of transmission of this communication means is also relatively low, logical
Interruption is easy to appear during letter.When traffic events occur, traffic prewarning message needs in a short time in distance range
Vehicular traffic between propagated to avoid there is a chain of traffic accident.But since the repetition of traffic message in a certain range is wide
It broadcasts, it is easy to cause the blocking of communication link.
Summary of the invention
The present invention provides a kind of about the selection method for establishing D2D communication connection pair between move vehicle, existing to solve
Communication link life span is shorter in communication linkage technology, and the probability of Successful transmissions is little, and efficiency of transmission is not high at the same time, in
The problems such as probability that breaks is larger.
The technical scheme is that it is a kind of about the selection method for establishing D2D communication connection pair between move vehicle, it is described
About established between move vehicle D2D communication connection pair selection method specific step is as follows:
Step1: setting certain vehicle and need to communicate with the front vehicle travelled in the same direction in range and establish D2D connection pair, so as to
Real-time Traffic Information propagation is carried out, vehicle a is sender of the message, and vehicle b is any neighbours' vehicle, calculates source vehicle and neighbours' vehicle
Distance between finds out the Europe of source vehicle a Yu neighbours' vehicle b according to formula (1) herein using the calculating of Euclidean distance between vehicle
Family name's distance, wherein VaRepresent the speed of source vehicle a, VbNeighbours' vehicle speed is represented, T represents separation between vehicles renewal time, Y generation
Longitudinal width between table vehicle, b=1,2,3,4.......n；
Step2: Fuzzy processing is carried out to lane locating for vehicle, lane classification is simply divided into two kinds, i.e., same lane
And adjacent lane, road width is set as K, and body width d, then neighboring trace workshop longitudinal width Y is up toIt is adjacent
Road workshop longitudinal width Y is minimum
In order to can ensure that the communication quality between vehicle, the neighbours' vehicle that source vehicle can select channel quality relatively good is led to
Letter, if source vehicle and neighbours' vehicle there are visual range, i.e. two vehicles illustrate that channel status at this time is good, source vehicle meeting at a distance of close
Road message is sent to the short distance vehicle in identical lane first；
It is closely interior on lane if they are the same that without other vehicles, then Real-time Traffic Information can be sent in short distance by source vehicle
Adjacent lane vehicle；It judges adjacent lane vehicle in time to be prevented, for neighbours' vehicle, with vehicle locating for source vehicle
The size of road difference and distance, can all influence a possibility that it is selected；
Step3: because of distance D between the locating lane between source vehicle a neighbours' vehicle b is different and vehicleabTo its quilt
Communication object is selected as to have an impact, it is concluded that each neighbours' vehicle is expressed as formula (2) by the priority index for selecting to be communicatively coupled,
Wherein D indicates the Euclidean distance between source vehicle and neighbours' vehicle, LSIndicate lane locating for source vehicle, LRIt indicates locating for neighbours' vehicle
Lane, LrIndicate that total number of track-lines, R indicate the attainable communication range of vehicle institute；
Illustrate the priority of neighbours' vehicle when priority index λ is bigger according to the calculated communication priority index λ of Step3
Higher, neighbours' vehicle is selected to establish possibility with source vehicle bigger, is compared to other neighbours' vehicles, priority index λ is most
The life span of its communication link set up of big vehicle is long, and interrupt rate is also smaller；
If occur the priority index of two cars simultaneously while being maximum, i.e., priority index is all maximum value, then source vehicle meeting
Preferential selection is in the foundation that there is the vehicle of maximum priority index to be communicatively coupled in identical lane with it；
Step4: it after source vehicle completes this message transmission, if there is new message needs to transfer out, repeats
State step, the foundation that search suitable vehicles are communicatively coupled.
In the step Step1, for the Euclidean distance between vehicle, the speed of vehicle is set as driving at a constant speed.
Further, in the step Step1, when vehicle in the process of moving, can periodically obtain surrounding neighbours vehicle
Traffic message, when there is urgent early warning information to send, source vehicle can be to the adjacent vehicle of base station requests and surrounding at this time
D2D connection is established, when calculating the Euclidean distance of two vehicles first, it is considered herein that having arrived the speed and longitudinal width Y of vehicle, energy
More actually reflect vehicle actual conditions.
In the step Step1 and Step2, the longitudinal width Y between two vehicles Fuzzy processing is subjected to, has simply been divided into
Same lane and adjacent lane, lane are also increased with it at a distance of its bigger Euclidean distance；
In the step Step3, when seeking priority index λ, it is contemplated that communication vehicle between locating lane and it is European away from
From D, while with total number of track-lines LrWith communication range R as benchmark, when the lane between Euclidean distance D or two vehicles is at a distance of i.e.
(|LS-LR|) value it is larger, all priority index λ can be made to become smaller, make vehicle by selection communication probability reduce.
When calculating a certain vehicle has maximum priority index, illustrate that the vehicle is communicatively coupled by source vehicle selection
A possibility that establishing is bigger, i.e., the vehicle needs to receive the necessity of early warning information for maximum.
When having two neighbours' vehicles and being maximum priority index, it is now in security consideration, source vehicle can select
Have the vehicle of maximum priority index as communication object in identical lane with it, reduces the possibility for a chain of traffic accident occur
Property.
The beneficial effects of the present invention are:
The present invention can effectively increase the efficiency of transmission that vehicle communicates in high speed movement, make D2D communication connection pair
Life span greatly improve, while reducing the outage probability of communication, improve the communication quality between vehicle, improve traffic
The propagation performance of information, can be to communicate crowded problem in effective solution short distance, while releasing the pressure of base station, effectively
The load for alleviating core network, realizes the shunting of data.
Detailed description of the invention
Fig. 1 is present invention communication connection selection flow diagram.
Fig. 2 is traffic model figure of the present invention.
Specific embodiment
Embodiment 1: as shown in Figs. 1-2, it is a kind of about established between move vehicle D2D communication connection pair selection method,
Step1: setting certain vehicle and need to communicate with the front vehicle travelled in the same direction in range and establish D2D connection pair, to carry out in real time
Traffic information is propagated, and vehicle a is sender of the message, and vehicle b is any neighbours' vehicle, calculate between source vehicle and neighbours' vehicle away from
From, herein using the calculating of Euclidean distance between vehicle, the Euclidean distance of source vehicle a Yu neighbours' vehicle b are found out according to formula (1),
Wherein VaRepresent the speed of source vehicle a, VbNeighbours' vehicle speed is represented, T represents separation between vehicles renewal time, and Y is represented between vehicle
Longitudinal width, b=1,2,3,4.......n；
Step2: Fuzzy processing is carried out to lane locating for vehicle, lane classification is simply divided into two kinds, i.e., same lane
And adjacent lane, road width is set as K, and body width d, then neighboring trace workshop longitudinal width Y is up toIt is adjacent
Road workshop longitudinal width Y is minimum
In order to can ensure that the communication quality between vehicle, the neighbours' vehicle that source vehicle can select channel quality relatively good is led to
Letter, if source vehicle and neighbours' vehicle there are visual range, i.e. two vehicles illustrate that channel status at this time is good, source vehicle meeting at a distance of close
Road message is sent to the short distance vehicle in identical lane first；
It is closely interior on lane if they are the same that without other vehicles, then Real-time Traffic Information can be sent in short distance by source vehicle
Adjacent lane vehicle；It judges adjacent lane vehicle in time to be prevented, for neighbours' vehicle, with vehicle locating for source vehicle
The size of road difference and distance, can all influence a possibility that it is selected；
Step3: because of distance D between the locating lane between source vehicle a neighbours' vehicle b is different and vehicleabTo its quilt
Communication object is selected as to have an impact, it is concluded that each neighbours' vehicle is expressed as formula (2) by the priority index for selecting to be communicatively coupled,
Wherein D indicates the Euclidean distance between source vehicle and neighbours' vehicle, LSIndicate lane locating for source vehicle, LRIt indicates locating for neighbours' vehicle
Lane, LrIndicate that total number of track-lines, R indicate the attainable communication range of vehicle institute；
Illustrate the priority of neighbours' vehicle when priority index λ is bigger according to the calculated communication priority index λ of Step3
Higher, neighbours' vehicle is selected to establish possibility with source vehicle bigger, is compared to other neighbours' vehicles, priority index λ is most
The life span of its communication link set up of big vehicle is long, and interrupt rate is also smaller；
If occur the priority index of two cars simultaneously while being maximum, i.e., priority index is all maximum value, then source vehicle meeting
Preferential selection is in the foundation that there is the vehicle of maximum priority index to be communicatively coupled in identical lane with it；
Step4: it after source vehicle completes this message transmission, if there is new message needs to transfer out, repeats
State step, the foundation that search suitable vehicles are communicatively coupled.
Further, in the step Step1, for the Euclidean distance between vehicle, the speed of vehicle is set as at the uniform velocity
Traveling.
Further, in the step Step1, when vehicle in the process of moving, can periodically obtain surrounding neighbours vehicle
Traffic message, when there is urgent early warning information to send, source vehicle can be to the adjacent vehicle of base station requests and surrounding at this time
D2D connection is established, when calculating the Euclidean distance of two vehicles first, it is considered herein that having arrived the speed and longitudinal width Y of vehicle, energy
More actually reflect vehicle actual conditions.
In the step Step1 and Step2, the longitudinal width Y between two vehicles Fuzzy processing is subjected to, has simply been divided into
Same lane and adjacent lane, lane are also increased with it at a distance of its bigger Euclidean distance；
In the step Step3, when seeking priority index λ, it is contemplated that communication vehicle between locating lane and it is European away from
From D, while with total number of track-lines LrWith communication range R as benchmark, when the lane between Euclidean distance D or two vehicles is at a distance of i.e.
(|LS-LR|) value it is larger, all priority index λ can be made to become smaller, make vehicle by selection communication probability reduce.
When calculating a certain vehicle has maximum priority index, illustrate that the vehicle is communicatively coupled by source vehicle selection
A possibility that establishing is bigger, i.e., the vehicle needs to receive the necessity of early warning information for maximum.
When having two neighbours' vehicles and being maximum priority index, it is now in security consideration, source vehicle can select
Have the vehicle of maximum priority index as communication object in identical lane with it, reduces the possibility for a chain of traffic accident occur
Property.
By the channel quality of these parameter Estimations D2D connection pair, communication connection priority index is derived, it is preferential based on this
Index come carry out D2D communication connection pair selection.Compared with prior art, the present invention mainly solving in the prior art due to vehicle
Being in causes communication link that there is very big dynamic to change in the case where running at high speed, lead to communication link life span
It is too short, the problems such as outage probability is excessive.
Above in conjunction with attached drawing, the embodiment of the present invention is explained in detail, but the present invention is not limited to above-mentioned
Embodiment within the knowledge of a person skilled in the art can also be before not departing from present inventive concept
Put that various changes can be made.
Claims (2)
1. a kind of about the selection method for establishing D2D communication connection pair between move vehicle, it is characterised in that:
It is described about established between move vehicle D2D communication connection pair selection method specific step is as follows:
Step1: it sets certain vehicle and needs to communicate with the front vehicle travelled in the same direction in range and establish D2D connection pair, to carry out
Real-time Traffic Information is propagated, and vehicle a is sender of the message, and vehicle b is any neighbours' vehicle, is calculated between source vehicle and neighbours' vehicle
Distance, herein using the calculating of Euclidean distance between vehicle, according to formula (1) find out the Euclidean of source vehicle a and neighbours' vehicle b away from
From wherein VaRepresent the speed of source vehicle a, VbNeighbours' vehicle speed is represented, T represents separation between vehicles renewal time, and Y represents vehicle
Longitudinal width between, b=1,2,3,4.......n；
Step2: Fuzzy processing is carried out to lane locating for vehicle, lane classification is simply divided into two kinds, i.e., same lane and phase
Adjacent lane sets road width as K, and body width d, then neighboring trace workshop longitudinal width Y is up toNeighboring trace vehicle
Between longitudinal width Y it is minimum
Step3: because of distance D between the locating lane between source vehicle a neighbours' vehicle b is different and vehicleabIt is selected
Have an impact for communication object, it is concluded that each neighbours' vehicle is expressed as formula (2) by the priority index for selecting to be communicatively coupled, wherein
D indicates the Euclidean distance between source vehicle and neighbours' vehicle, LSIndicate lane locating for source vehicle, LRIndicate lane locating for neighbours' vehicle,
LrIndicate that total number of track-lines, R indicate the attainable communication range of vehicle institute；
If occur the priority index of two cars simultaneously while being maximum, i.e., priority index is all maximum value, then source vehicle can be preferential
Select the foundation that there is the vehicle of maximum priority index to be communicatively coupled that identical lane is in it；
Step4: after source vehicle completes this message transmission, if there are new message needs to transfer out, above-mentioned step is repeated
Suddenly, the foundation that search suitable vehicles are communicatively coupled.
2. according to claim 1 about the selection method for establishing D2D communication connection pair between move vehicle, feature exists
In: in the step Step1, for the Euclidean distance between vehicle, the speed of vehicle is set as driving at a constant speed.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111619582A (en) * | 2019-02-27 | 2020-09-04 | 丰田自动车株式会社 | Processing device, processing method, and processing program |
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| CN105592550A (en) * | 2014-11-17 | 2016-05-18 | 电信科学技术研究院 | Method, device and system for distributing resources |
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| CN106454752A (en) * | 2015-08-06 | 2017-02-22 | 北京信威通信技术股份有限公司 | Broadcast information transmission method in 3GPP V2X communication |
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Application publication date: 20181228 |
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