CN106101253A - In-vehicle networking communication system - Google Patents
In-vehicle networking communication system Download PDFInfo
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- CN106101253A CN106101253A CN201610524119.8A CN201610524119A CN106101253A CN 106101253 A CN106101253 A CN 106101253A CN 201610524119 A CN201610524119 A CN 201610524119A CN 106101253 A CN106101253 A CN 106101253A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
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Abstract
In-vehicle networking communication system, described system includes: board units, roadside communication unit and Wireless MESH network, between described board units, and is connected by described Wireless MESH network between board units and roadside communication unit.Above-mentioned scheme, can improve data transmission bauds and the motility of vehicle-carrying communication network, and reduce cost.
Description
Technical field
The invention belongs to road safety technical field, particularly relate to a kind of In-vehicle networking communication system.
Background technology
Along with enriching constantly of people's material life, huge numbers of families come into day by day by automobile.Automobile is facilitating resident living
While, also bring potential safety hazard.China's automobile guarantee-quantity increases rapidly, and road traffic accident frequently occurs.
In order to reduce the generation of vehicle accident, active safety technologies based on vehicle communication arises at the historic moment, and it may be used for
Prevent from and reduce vehicle having an accident, it is to avoid personnel come to harm, become current various countries and attempt solving road traffic safety problem
A kind of new thinking.Active safety technologies based on vehicle communication, by the communication between vehicle, can enable the vehicle to pre-
The traveling purpose of vehicle near surveying, such that it is able to allow driver have the more time to dispose burst feelings when high vehicle speeds
Condition, preferably avoids the generation of road safety accident.
In prior art, between vehicle and vehicle, and led to by particular short range between vehicle and roadside communication unit
Letter (Dedicated Short Range Communication, DSRC) network communicates, but, this communication means is deposited
Low, very flexible and the high problem of cost in data transmission bauds.
Summary of the invention
The problem that the embodiment of the present invention solves is how to improve data transmission bauds and the motility of vehicle-carrying communication network, and
Reduce cost.
For solving the problems referred to above, embodiments providing a kind of In-vehicle networking communication system, described system includes: car
Carrier unit, roadside communication unit and Wireless MESH network, between described board units, and board units and roadside communication unit
Between connected by described Wireless MESH network；Described board units, be suitable to by described Wireless MESH network obtain preset
Other board units in first distance range and the road safety information of roadside communication unit transmission, and to acquired road
Safety information is analyzed；When determine there is road safety risk time, send security alarm information to corresponding board units, and
Notify other board units in described first distance range；Described roadside communication unit, is suitable to be obtained by Wireless MESH network
Take the road safety information that the board units in the range of default second distance sends, and acquired road safety information is carried out
Analyze；When determined by analysis there is road safety risk time, send security alarm information to corresponding board units, and notify
Other board units in the range of described second distance.
Alternatively, described board units, it is further adapted for relaying, to be sent to acquired Wireless MESH network signal
Be positioned at other board units and the roadside communication unit of default 3rd distance range, described 3rd distance more than described first away from
From.
Alternatively, described roadside communication unit, it is further adapted for relaying acquired Wireless MESH network signal, to send out
Giving other roadside communication unit and the board units being positioned at default 4th distance range, described 4th distance is more than described
Two distances.
Alternatively, described board units, it is further adapted for the data by a upper node sends and is forwarded to next node, described upper one
Node and next node are respectively other board units or roadside communication unit.
Alternatively, described roadside communication unit, be further adapted for the data that a node sends and be forwarded to next node, described on
One node and next node are respectively other roadside communication unit or board units.
Alternatively, described board units, it is further adapted for being communicated with other networks by described Wireless MESH network.
Alternatively, described roadside communication unit, it is further adapted for being communicated with other networks by described Wireless MESH network.
Alternatively, other networks described include following a kind of at least within: Wi MAX network, the Internet.
Compared with prior art, technical scheme has the advantage that
Above-mentioned scheme, is applied to Wireless MESH network in Vehicular communication system between vehicle and vehicle and roadside lead to
Communication between letter unit, in communication process, can carry out, according to the actual state of network, the selection that route, have data and pass
Defeated speed is fast, network structure feature flexibly, it is thus possible to improve the data transmission bauds of Vehicular communication system and motility,
And reduce communications cost.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of vehicle-carrying communication network system in the embodiment of the present invention；
Fig. 2 is the flow chart as the data transmission method for uplink of source node of the roadside communication unit in the embodiment of the present invention；
Fig. 3 is the flow process that the roadside communication unit in the embodiment of the present invention sends the method for the broadcast frame that other nodes send
Figure；
Fig. 4 is that the roadside communication unit in the embodiment of the present invention is determining that received data frame is sending out of forwarding data frame
The flow chart of delivery method；
Fig. 5 is the flow chart that the board units in inventive embodiments receives the data transmission method for uplink of broadcast frame；
Fig. 6 is board units in the embodiment of the present invention determining that received data frame is transmission during forwarding data frame
The flow chart of method.
Detailed description of the invention
For solving the above-mentioned problems in the prior art, the technical scheme that the embodiment of the present invention uses is by Wireless MESH net
Network is applied to the communication in Vehicular communication system between vehicle and between vehicle and roadside communication unit, in communication process,
Can carry out, according to the actual state of network, the selection that route, have that data transmission bauds is fast, network structure feature flexibly, can
To improve data transmission bauds and the motility of Vehicular communication system, and reduce communications cost.
Understandable, below in conjunction with the accompanying drawings to the present invention for enabling the above-mentioned purpose of the present invention, feature and advantage to become apparent from
Specific embodiment be described in detail.
Fig. 1 shows the structural representation of a kind of In-vehicle networking communication system in the embodiment of the present invention.As shown in Figure 1
In-vehicle networking communication system, can include board units 101, roadside communication unit 102 and Wireless MESH network 103, wherein, institute
State between board units 101, and by described Wireless MESH network 103 between board units 101 and roadside communication unit 102
Connect.
In being embodied as, board units 101 is arranged on vehicle, and roadside communication unit 102 is deployed in public way
Both sides, wherein, are communicated by V2V interface between board units 101, between board units 101 and roadside communication unit 102
Communicated by Che Dao road (Vehicle-to-Roadside Unit, V2R) interface.
In being embodied as, board units 101 can be received in the first default distance by described Wireless MESH network
In the range of other board units 101 and roadside communication unit 102 send road safety information, and to received road peace
Full information is analyzed processing, to obtain the road safety information of periphery.Wherein, when board units 101 is by the road to periphery
Road safety information is analyzed determining that the vehicle at the vehicle at self place or other board units 101 place exists road safety
Risk, as during it may happen that vehicle collision or vehicle peccancy travel, it can be by Wireless MESH network 103 to there is road
The board units 101 of security risk sends a warning message so that corresponding vehicle can know the existence of road safety risk, with
Take appropriate measures and tackle.Meanwhile, the road safety that board units 101 will can also be determined by Wireless MESH network
The information notification of risk in the first default distance range, i.e. other board units 101 of periphery and roadside communication unit
102, so that other board units 101 and roadside communication unit 102 can know the existence of road safety risk, and take phase
The measure answered, to improve the safety of driving.
In being embodied as, roadside communication unit 102 can be received default the by described Wireless MESH network 103
Road safety information that board units in two distance ranges 101 and other roadside communication units 102 send, and to being received
Road safety information is analyzed processing, to obtain the road safety information of periphery.Wherein, pass through when roadside communication unit 102
When the road safety information of periphery is analyzed determine that the vehicle at board units 101 place exists road safety risk, it can
To be sent a warning message to corresponding board units 101 by Wireless MESH network 103 so that corresponding vehicle can be known
The existence of road security risk, tackles to take appropriate measures.Meanwhile, roadside communication unit 102 can also be by wireless
MESH network 103 by the information notification of road safety risk that determines in the range of default second distance, i.e. other of periphery
Board units 101 and roadside communication unit 102 so that the car at other board units 101 and roadside communication unit 102 place with
Improve the safety of driving.
In an embodiment of the present invention, board units 101 is also used as repeater and uses, and it can be to acquired nothing
Line MESH network signal relays, and other board units being sent to be positioned at default 3rd distance range communicate with roadside
Unit.So, between other board units 101 and and other board units 101 all can pass through with roadside communication unit 102
The Wireless MESH network signal that board units 101 sends communicates.Wherein, the 3rd distance is more than described first distance.
In an alternative embodiment of the invention, roadside communication unit 102 can use as repeater, and it can be to acquired
Wireless MESH network signal relay, and be sent to be positioned at other board units and the roadside of default 4th distance range
Communication unit.So, between board units 101 and and board units 101 and other roadside communication units 102 between the most permissible
The Wireless MESH network signal sent by roadside communication unit 102 is communicated.Wherein, the 4th distance more than described second away from
From.
Therefore, the board units 101 in the embodiment of the present invention and roadside communication unit 102 can be at transmitting terminal and receiving terminals
Between provide redundant path, to eliminate Single Point of Faliure and potential link bottleneck, therefore, it can network service is greatly enhanced
Reliability.Additionally, utilize a plurality of alternative route, it can be ensured that the vehicle-carrying communication network in the embodiment of the present invention strong
Property, to solve some potential problems, the node failure caused such as Radio frequency interference or barrier and path failure, to carry further
The reliability of the vehicle-carrying communication network in the high embodiment of the present invention, promotes the experience of user.
In an embodiment of the present invention, board units 101 and roadside communication unit 102 are not only by Wireless MESH net
Network 103 directly communicates with other board units 101 and roadside communication unit 102, it is also possible to according to the situation of network, enter
Walking along the street by discovery and selection, until data are forwarded from board units 101 or the roadside communication unit 102 as source node
Extremely as other board units 101 or the roadside communication unit 102 of destination node, specifically refer to Fig. 2 and Fig. 3.
The data receiver method of the roadside communication unit in the embodiment of the present invention and board units will be done further below
Detailed introduction.
For the ease of describing, in being embodied as, the road by other nodes when roadside communication unit or board units
When the network signal of limit communication unit or board units acquisition Wireless MESH network carries out data transmission, it will thus provide Wireless MESH
One side of the network signal of net is referred to as proxy terminal, will obtain nothing by roadside communication unit or the board units of other nodes
One side of the network signal of line MESH network is referred to as proxied terminal.
Need exist for it is emphasized that roadside communication unit both can be proxy terminal in the embodiment of the present invention, it is also possible to be
Proxied terminal.Board units in the embodiment of the present invention is owing to cannot directly obtain Wireless MESH backbone network (Wireless MESH net
Network removes the part of board units) network signal, its can with roadside communication unit obtain Wireless MESH backbone network network
Signal, but, when board units can will be carried out by the network signal of the Wireless MESH network acquired in the communication unit of roadside
Relaying, it is provided that use to other roadside communication units or board units and access Wireless MESH network, to carry out the transmission of data,
In this case, board units can also use as proxy terminal, accesses Wireless MESH network by described board units
Roadside communication unit or board units be proxied terminal.
Fig. 2 shows the flow process as the data transmission method for uplink of source node of the roadside communication unit in the embodiment of the present invention
Figure.Shown in Figure 2, in being embodied as, the data transmission method for uplink of roadside communication unit can comprise the following steps that
Step S201: obtain Frame to be sent.
In being embodied as, described Frame to be sent is roadside communication unit or the generation as other board units
The Frame that the roadside communication unit of reason terminal sends to other equipment.
Step S202: fill in the frame type field in added frame head and quality of service field.
In being embodied as, the frame head added includes frame type field, service quality (Quality of
Service, QoS) field, source address field, destination address field (DAF), upper hop address field and next hop address field.
Wherein, the different numerical value in frame type field can characterize whether current data frame is forwarding data frame, i.e. makees
For intermediate node, the Frame that a upper node sends is sent to next node.Quality of service type field is used for representing different
Quality requirement.Source address field, represents the information of the physical address of the node generating and sending described Frame；Destination address
Field, represents the information of the physical address of the intended recipient node of described Frame.Upper hop address field and next hop address,
Refer at the Frame that will be generated present node from the route of the node that source address the is corresponding node corresponding to destination address
An adjacent upper node and the information of the physical address of next node.
Step S203: judge whether Frame to be sent is broadcast frame；When judged result is for being, step can be performed
S204, otherwise, then can directly perform step S205.
Step S204: add broadcast sequence field in described frame head, and fill in the information of the broadcast sequence number of correspondence.
In being embodied as, roadside communication unit is when determining that received Frame is broadcast frame, received
Broadcast sequence field in the frame head of broadcast frame fills in the information of corresponding broadcast sequence number, to be used for distinguishing the thing of identical sources
The different broadcast frames of reason (Media Access Control/Medium Access Control, MAC) address.
Step S205: fill in the source address field in described frame head, destination address field (DAF), upper hop address field and next
Jump address field, obtain the transmission Frame of correspondence.
In being embodied as, roadside communication unit, when determining that generated current data frame is broadcast frame, is filling in frame
In Tou filled in broadcast sequence field after, can then fill in the source address field in frame head, destination address field (DAF),
Upper hop address field and next hop address field, obtain the transmission Frame of correspondence.Wherein, source address field and upper hop ground
Location field is all filled in the address of self, destination address field (DAF) and next hop address field and is all filled in default broadcast address, as
111100000000。
In being embodied as, roadside communication unit, when determining that current data frame is not broadcast frame, can directly fill in frame
Source address field, destination address field (DAF), upper hop address field and next hop address field in Tou, obtains the transmission number of correspondence
According to frame.Wherein, source address field and upper hop address field all fill in the address of self, and destination address field (DAF) is then filled in purpose and connect
Receiving the information of address of node, the routing table that next hop address field is then preset by inquiry is searched and is obtained described destination address
The information of corresponding route entry (using described destination address as the route entry of terminal), and the phase that will obtain from described route entry
The address of adjacent next-hop node is filled in the next hop address field to the frame head of current data frame.
Step S206: the transmission Frame generated is added medium to be sent to transmission list.
In being embodied as, the information of each field in the frame head of the Frame currently generated all has been filled in
Time, obtain the transmission Frame of correspondence, and the Frame generated is added the transmission list created to self EMS memory, to press
According to default order, the Frame that sends in described transmission list is sent to next node corresponding to next hop address, with
Send eventually the board units to intended recipient node corresponding to destination address or roadside communication unit.
For the ease of describing, roadside communication unit sending out when receiving broadcast frame will be introduced respectively in connection with Fig. 3 and Fig. 4 below
Delivery method does detailed introduction with sending method when receiving forwarding data frame.
In being embodied as, roadside communication unit, can be by received Frame when receiving Frame
Frame head resolve, to determine that whether received data frame is as broadcast frame.Such as, roadside communication unit is received determining
Frame frame head in destination address field (DAF) in address be default broadcast address, it may be determined that currently received number
It is broadcast data frame according to frame；Otherwise, then may determine that received data frame is that (destination address is other nodes to forwarding data frame
The Frame of address).
Shown in Figure 3, in being embodied as, described roadside communication unit sends the broadcast frame of other nodes transmission
Method can comprise the following steps that
Step S301: judge whether received data frame received described broadcast frame；When judged result is for being, permissible
Perform step S302；Otherwise, then step S303 can be performed.
In being embodied as, roadside communication unit, can first basis when determining that received data frame is broadcast frame
The source MAC of the broadcast frame received and broadcast sequence information are to determine that this node had received described broadcast
Frame.
Step S302: abandon described broadcast data frame.
In being embodied as, when determine be successfully received described broadcast data frame time, can abandon currently received
Frame.
Step S303: generate corresponding sending Frame and add the transmission list to self.
In being embodied as, when determine do not received described broadcast data frame time, first roadside communication unit is filling in frame
Broadcast sequence field is filled in Tou the information of corresponding broadcast sequence number, and then fills in the upper hop address word in frame head
Section and next hop address field, obtain the transmission Frame of correspondence.Wherein, upper hop address field fills in the address of self, mesh
Address field and next hop address field all fill in default broadcast address, such as 111100000000.
Step S304: the transmission Frame generated is added medium to be sent to transmission list.
In being embodied as, the information of each field in the frame head of the Frame currently generated all has been filled in
Time, when obtaining the transmission Frame of correspondence, the transmission Frame generated can be added to self EMS memory by roadside communication unit
The transmission list of middle establishment, to be broadcast to other of surrounding according to default order by the transmission Frame (broadcast frame) generated
Node.
Fig. 4 shows that the roadside communication unit in the embodiment of the present invention is determining that received data frame is forwarding data frame
The flow chart of sending method.Shown in Figure 4, in being embodied as, communication unit roadside, described roadside communication unit exists
Determine that the sending method that received data frame is forwarding data frame can comprise the following steps that
Step S401: judge whether the destination address in received data frame is this node address；When judged result is
When being, step S402 can be performed；Otherwise, then step S403 can be performed.
In being embodied as, roadside communication unit can parse the mesh of correspondence from the frame head of received Frame
The information of address, and the destination address parsed is compared with this node address, to judge received data frame
Destination address the most identical with this node address.
Step S402: the frame head of received data frame is deleted the data obtaining correspondence, and obtained data are sent out
The third layer delivering to self operating system processes.
In being embodied as, roadside communication unit is this node address at the destination address determining received data frame
Time, illustrate that the intended recipient node of received data frame is this node.Now, described roadside communication unit just can not be to institute
The Frame received forwards operation accordingly, and directly can process received data frame.Specifically, will be received
The frame head of Frame delete, obtain the data of correspondence, and the corresponding data obtained sent to this node operating system
Third layer carries out data process.
Step S403: judge that whether the destination address in received data frame is the ground of the proxied terminal of this node
Location；When judged result is for being, step S405 can be performed；Otherwise, then step S404 can be performed.
In being embodied as, roadside communication unit is not this node address at the destination address determining received data frame
Time, the destination address parsed from the frame head of received data frame and this node can be acted on behalf of as proxy terminal
The address of proxied terminal compares, to determine that whether the destination address of received data frame is the proxied end of this node
The address of end.
Step S404: judge destination address whether other addresss of node of received data frame；When judged result is
When being, step S405 can be performed；Otherwise, then step S406 can be performed.
In being embodied as, roadside communication unit is determining the destination address of received data frame neither the ground of self
When location is not the address of node of the proxied terminal that this node is acted on behalf of as proxy terminal, can be by received data
The destination address parsed in the frame head of frame compares due to the address of the roadside communication unit of other nodes, is connect to determine
Whether the Frame received is the address of the roadside communication unit of other nodes.
Step S405: generate corresponding sending Frame and add to the transmission list of self medium to be sent.
In being embodied as, determine that the destination address of received data frame is the mesh of other nodes performing step S401
Address time, described roadside communication unit fill in the upper hop address field of received data frame self address letter
Breath, down hop joint adjacent in next hop address field fills in the corresponding route entry that inquiry from default routing table obtains
The next hop address field in the frame head of received data frame is added in the address of point, thus obtains the transmission Frame of correspondence,
And the obtained Frame that sends is added medium to be sent to the transmission list of self.
In being embodied as, determine that the destination address of received data frame is the mesh of other nodes performing step S403
Address time, described roadside communication unit fill in the upper hop address field of received data frame self address letter
Breath, down hop joint adjacent in next hop address field fills in the corresponding route entry that inquiry from default routing table obtains
The next hop address field in the frame head of received data frame is added in the address of point, thus obtains the transmission Frame of correspondence,
And the obtained Frame that sends is added medium to be sent to the transmission list of self.
In being embodied as, described roadside communication unit determines the destination of received data frame performing step S406
When location is the address of the proxied terminal that other nodes are acted on behalf of as proxy terminal, described roadside communication unit is being received
The upper hop address field of Frame is filled in the address information of self, fills in from default routing table in next hop address field
Next in the frame head of received data frame is added in next node address adjacent in the corresponding route entry that middle inquiry obtains
Jump address field, thus obtain the transmission Frame of correspondence, and the obtained Frame that sends is added the transmission row to self
Table is medium to be sent.
Step S406: judge the address of the proxied terminal of destination address whether other nodes of received data frame；
When judged result is for being, step S405 can be performed；Otherwise, then step S407 can be performed.
In being embodied as, when the destination address determining received data frame is not other addresss of node, by institute
The address of the proxied terminal that the destination address of the Frame received is acted on behalf of as proxy terminal with other nodes compares,
To determine that the destination address of received data frame is the address of the proxied terminal of other nodes.
Step S407: whether the source address judging received data frame is this node address；When judged result is for being,
Step S408 can be performed；Otherwise, then any operation can not be performed.
In being embodied as, roadside communication unit destination address in the frame head determining received data frame neither
The address of the proxied terminal that this node address, this node are acted on behalf of as proxy terminal, be not other node address or
During the address of the proxied terminal that other nodes are acted on behalf of as proxy terminal, can be by the source address from received data frame
The information of the source address that field parses compares with the address of self, to determine whether this node is received data frame
Source node.
Step S408: received data frame is abandoned.
In being embodied as, roadside communication unit is by the source parsed by the source address field from received data frame
The information of address compares with the address of self, determines when the source address of received data frame is the address of self, permissible
Received data frame is abandoned.
In being embodied as, after successful proxy is under the communication unit of roadside, board units is likely to be received from conduct
The Frame that the roadside communication unit of the proxy terminal of oneself sends.These Frames are the roads of the proxy terminal from board units
The network interface card of limit communication unit receives, and in other words, these Frames that board units receives are the numbers of Wireless MESH layer
According to frame.Board units is just intended to process this part of received data frame received.Meanwhile, nothing is not participated in because of board units
The routing management of the core network of line MESH network, not responsible forwarding data.Therefore, board units received data frame is permissible
There is a following two form: one is sent to the Frame of the board units of this node, and (i.e. destination address is that board units accesses nothing
The NIC address of line MESH network；It two is that board units is as roadside communication unit or the proxy terminal of other board units
Frame.For the class frame of both types, received data frame all directly can be uploaded to two layers by board units
Bridge, is transferred to operating system third layer to process Frame by two layers of bridge, specifically refers to Fig. 5.
Fig. 5 shows that the board units in the embodiment of the present invention receives the flow chart of the data transmission method for uplink of broadcast frame.
As it is shown in figure 5, in being embodied as, the sending method of the broadcast frame of the board units in the embodiment of the present invention can include as follows
Step:
Shown in Figure 5, in being embodied as, described roadside communication unit sends the broadcast frame of other nodes transmission
Method can comprise the following steps that
Step S501: judge whether received data frame received described broadcast frame；When judged result is for being, permissible
Perform step S502；Otherwise, then step S503 can be performed.
In being embodied as, board units, can be first according to being connect when determining that received data frame is broadcast frame
Source MAC and the broadcast sequence information of the broadcast frame received determine that this node had received described broadcast frame.
Step S502: abandon described broadcast frame.
In being embodied as, when determine be successfully received described broadcast data frame time, board units can abandon work as
The Frame of front reception.
Step S504: generate corresponding sending Frame and add the transmission list to self.
In being embodied as, when determine do not received described broadcast data frame time, first board units can fill in frame
Broadcast sequence field fills in Tou the information of corresponding broadcast sequence number, and then fill in the source address field in frame head,
Destination address field (DAF), upper hop address field and next hop address field, obtain the transmission Frame of correspondence.Wherein, source address
The information of field and destination address field (DAF) keeps constant, and upper hop address field fills in the address of self, next hop address field
All fill in default broadcast address.
Step S505: the transmission Frame generated is added medium to be sent to transmission list.
In being embodied as, the information of each field in the frame head of the Frame currently generated all has been filled in
Time, when obtaining the transmission Frame of correspondence, the transmission Frame generated can be added by board units to be created to self EMS memory
The transmission list built, to be broadcast to other joints of surrounding according to default order by the transmission Frame (broadcast frame) generated
Point.
Fig. 6 shows that board units in the embodiment of the present invention is when determining that received data frame is forwarding data frame
The flow chart of sending method.As shown in Figure 6, in being embodied as, the sending method of the forwarding data frame of board units can be wrapped
Include the steps:
Step S601: whether the destination address of the Frame received by acquisition is this node address；When judged result is
When being, step S602 can be performed, otherwise, then can perform step S603.
In being embodied as, board units, can be by institute when determining that received Frame is not broadcast frame
Destination address field (DAF) in the frame head of the Frame received resolves, to determine that the purpose of received data frame receives joint
Whether point is this node.
Step S602: the frame head of received data frame is deleted the data obtaining correspondence, and obtained data are sent out
The third layer delivering to self operating system processes.
In being embodied as, board units, when determining that the destination address of received data frame is this node address, is said
The intended recipient node of bright received data frame is this node.Now, described board units just can not be to the number received
Forward operation according to frame accordingly, and can directly received data frame be processed.Specifically, by received data frame
Frame head delete, obtain the data of correspondence, and the third layer corresponding data obtained sent to this node operating system entered
Row data process.
Step S603: whether the destination address received by judgement is the address of the proxied terminal of this node；Work as judgement
When result is for being, step S604 can be performed, otherwise, then perform step S605.
In being embodied as, board units can be by the destination that will parse from the frame head of received data frame
The address of the proxied middle terminal that the information of location field is acted on behalf of with self compares, whether to determine received data frame
For being sent to the Frame of the proxied terminal of this node.
Step S604: generate corresponding transmission Frame, add to self transmission list and etc. to be sent.
In being embodied as, board units is at the proxied end that the destination address determining received data frame is this node
During the address of end, it may be determined that received data frame is by being sent to the Frame of proxied terminal self acted on behalf of.Now,
Board units can fill in the source address field in described frame head, destination address field (DAF), upper hop address field and down hop ground
Location field.Wherein, source address field, the information of destination address field (DAF) keep constant, fill in this node in upper hop address field
Address, next hop address is filled in the address of the proxied terminal of this node, obtains the Frame of transmission of correspondence, and add
To the transmission list of self, to send to proxied terminal.
Step S605: abandon received data frame.
In being embodied as, board units is determining that received data frame (forwarding data frame) is neither be sent to this section
The Frame of point, when being not the Frame being sent to the proxied terminal that this node is acted on behalf of, can directly will be received
Frame abandons.
Therefore, other board units near the board units or roadside communication unit of present node or roadside communication
When unit causes network congestion because flow is excessive, then data can be automatically rerouted to a less neighbour of communication flows
Nearly node is transmitted.The rest may be inferred, and packet can also continue to route to the most nearest next one according to the situation of network
Node is transmitted, until arriving final destination, it is achieved that the multi-hop between nodes accesses, and improves data
The reliability of transmission.
By above-mentioned introduction, the In-vehicle networking communication system in the embodiment of the present invention, the car that each node is corresponding
Carrier unit and roadside communication unit all can be simultaneously as access point (AP) and router and repeater, each nodes in network
Can send and receive signal, each node directly can communicate with one or more peer node
Additionally, the In-vehicle networking communication system in the embodiment of the present invention also has the advantage that
(1) message transmission rate is high: transmission between each node in the In-vehicle networking communication system in the embodiment of the present invention
Distance, makes transmission path loss obtain effective control, also improves message transmission rate simultaneously.Additionally, may also be combined with other
Advanced is wirelessly transferred with access technology (such as orthogonal frequency division multiplexi, ultrawideband, MIMO technique
Deng) improve transfer rate further.
(2) network configuration and easy maintenance are quick: each node in the In-vehicle networking communication system in the embodiment of the present invention
Use the mode of MANET, it is only necessary to dispose a small amount of radio infrastructure the most local, it becomes possible to existing facility
Composition radio bandwidth access network, makes network to configure fast and flexible, and safeguards the most simple and efficient.Wireless
MESH network is made the network operation not affected by link-quality and expansibility of network size by the characteristic selected, therefore, it is possible to effectively carry
The vigorousness of high network and pliability.
(3) low cost: owing to need not build the infrastructure such as base station, the primary construction cost of Wireless MESH network is relatively
Low.Along with the increase network size of customer volume is constantly expanded, Add User and only just can need to be connect by other proximal subscribers
Enter network, so greatly reduce the construction cost of backbone network.Additionally, Wireless MESH network interior joint communication distance is short, and
And can also use and exempt from licence frequency range (2.4GHz), so can not only effectively reduce the equipment requirement to antenna, also save
The use cost of user.
(4) capacity of resisting disturbance is strong: in Wireless MESH network, and owing to the spacing of node is little, the most each node only needs relatively
Few transmitting power just can be set up with the node of surrounding and be connected.The transmitting power of node is the lowest, to adjacent node radiofrequency signal
The interference produced is the least.Meanwhile, shorter nodal pitch also reduces the interference that data are transmitted by barrier.
One of ordinary skill in the art will appreciate that all or part of step in the various methods of above-described embodiment is can
Completing instructing relevant hardware by program, this program can be stored in computer-readable recording medium, and storage is situated between
Matter may include that ROM, RAM, disk or CD etc..
Having been described in detail the method and system of the embodiment of the present invention above, the present invention is not limited to this.Any
Skilled person, without departing from the spirit and scope of the present invention, all can make various changes or modifications, therefore the guarantor of the present invention
The scope of protecting should be as the criterion with claim limited range.
Claims (8)
1. an In-vehicle networking communication system, it is characterised in that including: board units, roadside communication unit and Wireless MESH net
Network, between described board units, and is connected by described Wireless MESH network between board units and roadside communication unit；
Described board units, is suitable to obtain other the vehicle-mounted lists in the first distance range preset by described Wireless MESH network
The road safety information that unit and roadside communication unit send, and acquired road safety information is analyzed；Deposit when determining
When road safety risk, send security alarm information to corresponding board units, and in notifying described first distance range
Other board units；
Described roadside communication unit, is suitable to the board units by Wireless MESH network obtains in the range of default second distance and sends
Road safety information, and acquired road safety information is analyzed；Road safety wind is there is when being determined by analysis
During danger, send security alarm information to corresponding board units, and notify other board units in the range of described second distance.
In-vehicle networking communication system the most according to claim 1, it is characterised in that described board units, is further adapted for institute
The Wireless MESH network signal obtained relays, and be sent to be positioned at default 3rd distance range other board units and
Roadside communication unit, described 3rd distance is more than described first distance.
In-vehicle networking communication system the most according to claim 1, it is characterised in that described roadside communication unit, is further adapted for
Acquired Wireless MESH network signal is relayed, logical to be sent to be positioned at other roadsides of default 4th distance range
Letter unit and board units, described 4th distance is more than described second distance.
In-vehicle networking communication system the most according to claim 1, it is characterised in that described board units, is further adapted for upper
The data that one node sends are forwarded to next node, and a described upper node and next node are respectively other board units or road
Limit communication unit.
In-vehicle networking communication system the most according to claim 1, it is characterised in that described roadside communication unit, is further adapted for
The data that a upper node sends are forwarded to next node, and a described upper node and next node are respectively other roadside communication units
Or board units.
In-vehicle networking communication system the most according to claim 1, it is characterised in that described board units, is further adapted for passing through
Described Wireless MESH network communicates with other networks.
In-vehicle networking communication system the most according to claim 1, it is characterised in that described roadside communication unit, is further adapted for
Communicated with other networks by described Wireless MESH network.
8. according to the In-vehicle networking communication system described in claim 6 or 7, it is characterised in that other networks described include following
A kind of at least within: Wi MAX network, the Internet.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108337119A (en) * | 2018-02-01 | 2018-07-27 | 毛述春 | A kind of information exchange and security authentication systems of In-vehicle networking |
| CN108366371A (en) * | 2018-02-01 | 2018-08-03 | 毛述春 | A kind of information communicating method of In-vehicle networking |
| CN109584591A (en) * | 2017-09-29 | 2019-04-05 | 冲电气工业株式会社 | Information processing unit, information processing system and recording medium |
| CN109874126A (en) * | 2019-03-05 | 2019-06-11 | 南京钛佳汽车科技有限公司 | A kind of application method of wireless communication technique in car networking V2V |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1780508A1 (en) * | 2005-10-31 | 2007-05-02 | Aisin AW., Ltd. | Route guidance system and route guidance method |
| CN102097003A (en) * | 2010-12-31 | 2011-06-15 | 北京星河易达科技有限公司 | Intelligent traffic safety system based on human condition recognition |
| CN105245608A (en) * | 2015-10-23 | 2016-01-13 | 同济大学 | Telematics network node screening and accessibility routing construction method based on self-encoding network |
-
2016
- 2016-07-04 CN CN201610524119.8A patent/CN106101253A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1780508A1 (en) * | 2005-10-31 | 2007-05-02 | Aisin AW., Ltd. | Route guidance system and route guidance method |
| CN102097003A (en) * | 2010-12-31 | 2011-06-15 | 北京星河易达科技有限公司 | Intelligent traffic safety system based on human condition recognition |
| CN105245608A (en) * | 2015-10-23 | 2016-01-13 | 同济大学 | Telematics network node screening and accessibility routing construction method based on self-encoding network |
Non-Patent Citations (2)
| Title |
|---|
| 王健: "面向车路协同的路侧节点部署与异构网络切换方法", 《中国优秀硕士学位论文全文数据库》 * |
| 鲁光泉、宋阳: "车路协同环境下驾驶行为特性与交通安全综述", 《交通信息与安全》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109584591A (en) * | 2017-09-29 | 2019-04-05 | 冲电气工业株式会社 | Information processing unit, information processing system and recording medium |
| CN108337119A (en) * | 2018-02-01 | 2018-07-27 | 毛述春 | A kind of information exchange and security authentication systems of In-vehicle networking |
| CN108366371A (en) * | 2018-02-01 | 2018-08-03 | 毛述春 | A kind of information communicating method of In-vehicle networking |
| CN109874126A (en) * | 2019-03-05 | 2019-06-11 | 南京钛佳汽车科技有限公司 | A kind of application method of wireless communication technique in car networking V2V |
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