CN108028710A

CN108028710A - The apparatus and method for transmitting communication information

Info

Publication number: CN108028710A
Application number: CN201580083112.0A
Authority: CN
Inventors: 施艺; 康斯坦丁诺斯·卡查若斯; 韩翀; 迈赫达德·迪亚纳提
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2015-09-15
Filing date: 2015-09-15
Publication date: 2018-05-11
Anticipated expiration: 2035-09-15
Also published as: CN108028710B; WO2017045139A1

Abstract

The application proposes a kind of communication equipment.Equipment can include receiver, processor, DSRC modules and mobile network's module.Receiver is used for the location information for obtaining the current location of instruction communication equipment, current translational speed and current moving direction, and receives location information from one or more of the other equipment.Processor is used for based on the geodata and equipment that are stored in memory and the identification of the location information of miscellaneous equipment around the low signal areas of equipment, and the area message of generation instruction low signal areas.DSRC modules are used to generate communication information.Mobile network's module is used for transmission the area message of instruction low signal areas to mobile network node, and when low signal areas is in the critical distance of equipment, instruction mobile network node transmission communication information to one or more equipment in low signal areas.

Description

The apparatus and method for transmitting communication information

Technical field

The present invention relates to field of communication technology, more particularly to transmission communication information.

Background technology

Car networking (vehicle to everything, the V2X) communication technology of automobile for vehicle provide with other vehicles or The ability of roadside unit communication.By allowing mobile vehicle and roadside equipment or other traffic objects (for example, traffic lights, charge Stand, vehicle, pedestrian, cyclist etc., hereinafter referred to as " traffic object ") between information exchange, lead to typically by special short distance Believe (Dedicated Short Range Communication, DSRC) channel, V2X technologies improve the security on road. DSRC channels are to use the one-way or bi-directional short distance designed to intermediate range radio communication channel exclusively for automobile.DSRC is in 5.9GHz Work in other frequencies of about 1000 meters of wave band or scope.Exemplary DSRC communication systems can contain two kinds of communication Node：Vehicle (mobile) and roadside website (static).Vehicle and roadside website are transmitted as providing each other with by V2X message Information, for example, safety warning and flow information.Attempt individually to avoid accident and traffic congestion compared to each vehicle, DSRC leads to Letter system can more effectively solve the problems, such as these as a kind of approach to cooperation.

For most of safety-relevant applications, it is desirable to received within 100 milliseconds (milliseconds, msec) of generation V2X message.But, it has been found that there is effect spread V2X message to be subject to for example, vehicle by DSRC channels between vehicle Nearby hinder the adverse effect of the environmental characteristicses such as the building of sighting distance (line-of-sight, LOS) communication and tall and big automobile. Fig. 1 shows exemplary non line of sight (non-line-of-sight, a NLOS) scene, wherein, although building A does not hinder car V2X message propagation is carried out between 180 and 184, but V2X is carried out by DSRC system between hindering vehicle 180 and 182 and is disappeared Breath has effect spread.If V2X message cannot be exchanged in time, mobile vehicle may inaccurately predict potential driving dangerousness.Cause This is, it is necessary to improve the transmission reliability of V2X message.

The content of the invention

Therefore, embodiments herein provides a kind of devices, systems, and methods for transmitting communication information.

The first aspect of the application provides a kind of communication equipment to improve the communication capacity in related low signal areas.It is described Equipment may be used primarily for vehicle, can include：Receiver；Processor；Memory；Form dedicated short-range communication (dedicated Short range communication, DSRC) module circuit；And form the circuit of mobile network communication module.It is described Receiver is used for the positioning letter for obtaining the current location for indicating the communication equipment, current translational speed and current moving direction Breath, and receive location information from one or more of the other equipment.The processor is used to be based on being stored in the memory Geodata and the equipment and the location information of the miscellaneous equipment identification around the equipment low signal areas, and Generation indicates the area message of the low signal areas.The DSRC modules are used to generate communication information.Mobile network's mould Block is used for transmission the area message for indicating the low signal areas to mobile network node, and when the low signal areas When in the critical distance of the equipment, indicate that the mobile network node transmission communication information is extremely located at the low signal areas Interior one or more equipment.

By using the communication equipment according to an embodiment of the present application, by mobile communications network in such as NLOS Communication in the low signal areas in region compensates.This improves communication information transmission quality, realizes more reliable lead to Letter.

According to an embodiment of the equipment of first aspect, the DSRC modules are further used for：Based on described Manage data and the equipment and the location information of miscellaneous equipment, dynamic map of the generation around the region of the equipment.

Alternatively, in the low signal areas around the equipment is identified, the processor is used for：Set according to the communication Standby current environmental condition identifies the low signal areas on the dynamic map.

Alternatively, the memory is further used for storing multiple path loss models, in the path loss model Each corresponds to an environmental condition, wherein being identified on the dynamic map in the low signal areas, the processor For：To be multiple unit areas around the region division of the equipment on the dynamic map；According to each unit area The current environmental condition be that each unit area selects a path loss model from multiple path loss models；It is based on Received signal strength (received signal strength, RSS) model of selection calculates the unit on the dynamic map The RSS values in region；And unit area of the RSS values less than threshold value is classified as the low signal areas.

Alternatively, identified on the dynamic map in the low signal areas, the processor is used for：In the dynamic To be multiple unit areas around the region division of the equipment on map；According to the current environment of the equipment from the storage One or more path loss models in select one or more path loss models；Based on selected one or more RSS models calculate multiple RSS values of the unit area of multiple divisions on dynamic map respectively；And it will be less than corresponding to RSS values The weak signal unit area of threshold value is divided into one group.

Alternatively, the dynamic map is updated based on preset frequency.

Alternatively, the DSRC modules be further used in communication range by DSRC network broadcast it is described communication disappear Breath.

Therefore, by calculating multiple RSS values of the unit area of multiple divisions on the dynamic map, the processor can Map is propagated with generation.Because can be based on the RSS values for propagating each unit area of map calculation, it is possible to according to institute The comparison of a RSS value/multiple RSS values and threshold value is stated to determine the low signal areas.Thus accurate weak signal area is identified Domain, further ensures that the communication reliability in the low signal areas.

A kind of second aspect, there is provided communication means performed by communication equipment.It the described method comprises the following steps：Reception refers to Show the location information of the current location of the communication equipment, current translational speed and current moving direction；Other communications are received to set Standby location information；The location information of geodata and the communication equipment and other communication equipments based on storage, knows Not Wei Rao the communication equipment low signal areas；Generate communication information and indicate the area message of the low signal areas；Pass The area message of the defeated instruction low signal areas is to mobile network node, and when the low signal areas is set described When in standby critical distance, indicate that the mobile network node transmits the communication information in the low signal areas One or more communication equipments.

According to the first embodiment of the communication means of second aspect, the communication means includes：Based on described Manage data and the equipment and the location information of miscellaneous equipment, dynamic map of the generation around the region of the equipment.

Alternatively, the communication means includes：According to the current environmental condition of the communication equipment in the dynamic map The upper identification low signal areas.

Alternatively, the communication means includes：To be more around the region division of the equipment on the dynamic map A unit area；It is each unit area from multiple path loss models according to the current environmental condition of each unit area Domain selects a path loss model, wherein each in the path loss model corresponds to an environmental condition；It is based on Received signal strength (received signal strength, RSS) model of selection calculates the unit on the dynamic map The RSS values in region；And unit area of the RSS values less than threshold value is classified as the low signal areas.

Alternatively, the dynamic map is updated based on preset frequency.

Alternatively, the method is further included broadcasts the step of the communication information in communication range by DSRC network Suddenly.

The third aspect of the application provides a kind of communication system to ensure to transmit the transmission message.The communication system bag Include：Communication equipment, for receiving the positioning letter of the current location for indicating the equipment, current translational speed and current moving direction Breath, and location information is received from one or more of the other equipment, based on location information identification around the weak of the equipment Signal area, transmission indicate the area message of the low signal areas, and when the low signal areas is in critical distance Communication information is transmitted by mobile network；And mobile network service device, for receiving the area message and forwarding described logical Believe message to one or more equipment in the low signal areas.

According to the first embodiment of the communication means of the third aspect, the communication system includes application server, Coupled to the communication equipment and mobile network service device, wherein the application server includes：Processor, for selecting to transmit Pattern is to transmit the communication information；And transmitter, for transmitting one or more cells when selecting broadcast transmission mode (identification, ID) is identified to the mobile network service device, and one is transmitted when selecting multicast transmission mode Or multiple road object ID are to the mobile network service device.

Alternatively, the application server further comprises：Receiver, the area of the low signal areas is indicated for receiving Domain message；And memory, coupled to the processor, and for storing cell layout, wherein the processor is further used In by identifying that one or more cells that the overlapping region of the low signal areas and the cell layout covers determine cell ID。

Alternatively, in the communication information is forwarded, the mobile network service device is used to receive institute from application server The cell ID of the cell of identification is stated, and broadcasts traffic object of the communication information into corresponding to the cell of the cell ID, And the transmitter is further used for when selecting the multicasting mode, transmission indicates that the request of the low signal areas disappears Breath.

Alternatively, the communication system further comprises：Location server, coupled to the communication equipment, wherein described Location server includes：Location server receiver, for receiving the request message；Location server memory, for depositing Store up the travel information of the traffic object；And location server processor, coupled to the location server receiver and institute Position memory is stated, and the traffic object in the low signal areas is identified for the travel information based on the storage, And provide the traffic object ID.

Alternatively, the application server further comprises：Memory, the traveling for storing the traffic object are believed Breath, wherein the processor is further used for the friendship in the travel information identification low signal areas based on the storage Logical object, and the traffic object ID is provided.

Alternatively, in the communication information is forwarded, the mobile network service device is further used for receiving the traffic Object ID, and communication information described in multicast extremely corresponds to the traffic object of the traffic object ID.

In general, by using the communication system, promising transmission is realized by the LTE network, is improved Communication quality in the low signal areas.A kind of fourth aspect, there is provided communication equipment.The communication equipment includes：Place Manage device；And non-transient computer-readable recording medium, there is the computer executable instructions being stored thereon and geographical number According to the computer executable instructions by the processor when being performed so that the processor：The instruction communication is obtained to set The location information of standby current location, current translational speed and current moving direction, and received from one or more of the other equipment Location information；The location information based on geodata and the equipment and miscellaneous equipment, identification are weak around the equipment Signal area；Generation indicates the area message and communication information of the low signal areas；And transmission indicates the weak signal area The area message in domain is to mobile network node, and when the low signal areas is in the critical distance of the equipment, Indicate that the mobile network node transmits the communication information to one or more equipment in the low signal areas.

According to the first embodiment of the communication equipment of fourth aspect, the computer executable instructions are by described When processor performs, further such that the processor：Based on described in the geodata and the equipment and miscellaneous equipment Location information, dynamic map of the generation around the region of the equipment.

After consulting figures below and specifically describing, other systems, method, feature and advantage of the invention will be to affiliated The technical staff in field is obvious or becomes apparent.All such spare system, method, feature and advantages are all It is desirably included in this specification, belongs to the scope of the present invention and protected by the appended claims.

Brief description of the drawings

Teachings herein is described below in conjunction with attached drawing, attached drawing is illustrative rather than definitive thereof disclosure, wherein Similar label represents similar element, wherein：

Fig. 1 is schematically illustrating for NLOS scenes；

Fig. 2 is the simplified block diagram according to the communication equipment of embodiments herein；

Fig. 3 is the simplified block diagram according to the communication equipment of the embodiment of the application；

Fig. 4 is the schematic diagram for illustrating one example of critical distance；

Fig. 5 is the simplified block diagram according to the communication equipment of another embodiment of the application；

Fig. 6 is the simplified block diagram according to the communication system of the embodiment of the application；

Fig. 7 is the simplified block diagram according to the application server of the embodiment of the application；

Fig. 8 is the simplified block diagram according to the location server of the embodiment of the application；

Fig. 9 is the schema according to the request message format of the embodiment of the application；

Figure 10 is the schema according to the answer message form of the embodiment of the application；

Figure 11 is the flow chart according to the method for the transmission vehicle communication information of the embodiment of the application；

Figure 12 is the flow chart according to the method for the identification low signal areas of the embodiment of the application；

Figure 13 is the flow chart according to the method that low signal areas is identified on dynamic map of the embodiment of the application；

Figure 14 is the flow chart according to the transmission vehicle communication information method of another embodiment of the application；And

Figure 15 is the flow chart according to the method for the forwarding vehicle communication message of another embodiment of the application.

Embodiment

An object of the application, technical solution and advantage are described below with reference to drawings and examples.Obviously, described implementation Example is only present application part of the embodiment, instead of all the embodiments.

In addition, the present embodiment it is described in detail below in, elaborate many specific details in order to provide to the application's Understand thoroughly.However, those of ordinary skill in the art are it will be recognized that can be real in the case of these no details Trample the application.On the other hand, well-known method, flow and component are not described in, in order to avoid each side to the application Cause unnecessarily to obscure.

Embodiments herein provides a kind of communication equipment.Equipment can be based on the prior art vehicle using DSRC technology Communication equipment, and be additionally equipped with suitably making equipment and other communication equipments by wireless cellular communication network (hereafter Referred to as mobile network) hardware circuit that communicates, it is achieved in more reliable communication.Mobile network is distributed in referred to as cell Land area, each in cell is by least one fixed position transceiver service for being referred to as cell platform or base station. Transceiver is connected to the various nodes of mobile network, including network controller and the webserver.The example of mobile network includes Long Term Evolution (Long Term Evolution, LTE) network, advanced LTE (LTE advance, LTE-A) network, the whole world are mobile Communication system (global system for mobile communication, GSM) network, CDMA access (code Division multiple access, CDMA) network, wideband code division multiple access (wideband code division Multiple access, WCDMA) network, General Packet Radio Service (general packet radio service, GPRS) network etc..Using communication equipment, passed in non line of sight (non-line-of-sight, NLOS) side upwardly through mobile network Vehicle communication message is broadcast, for example, V2X message, the communication reliability in NLOS directions can be lifted.In the following description, using LTE Network illustrates, and should not be construed for purposes of illustration using LTE network the application being limited to such particular network.

Fig. 2 is the simplified block diagram according to the communication equipment 150 of embodiments herein.Communication equipment 150 may be used primarily for Vehicle, can be used for other movements or the object not moved.It will be understood, therefore, that when illustrating vehicle, it may be referred to communication and set Standby 150 vehicles that can be used for, mobile object or not mobile object.Communication equipment 150 includes various circuits and hardware module, hardware Module include receiver 152, processor 158, dedicated short-range communication (dedicated short range communication, DSRC) module 154, LTE communication module 156 and memory 160, and it is alternatively possible to including user interface (not shown).

Receiver 152 is used for the location information of receiving communication device 150 (or vehicle).Location information causes communication equipment 150 can determine its current location, current translational speed and current moving direction.Can be fixed by known techniques, such as the whole world Position business (global positioning service, GPS) or similar fashion receive location information.

Receiver 152 is additionally operable to receive V2X communication informations from other DSRC communication equipments or traffic object.In these equipment The location information of each, such as the current location of equipment, current translational speed and current moving direction can be from being contained in Determined in location information in the V2X message that slave device receives.

DSRC modules 154 are used for the location information based on the equipment 150 received, the traffic thing around equipment received The location information of body and the geodata of storage, dynamic map of the generation around the region of equipment 150.DSRC modules 154 can be with It is further used for generating one or more V2X message, can be used for by DSRC network broadcast V2X disappearing in communication range Breath.It is as previously mentioned, V2X message may be used to indicate the current travel condition of vehicle, can include position, the speed of instruction vehicle With the routine information in direction, the emergence message produced during the event such as accident or emergency, and other communication letters Breath.Routine information can be included in cooperation awareness message (cooperative awareness messages, CAM) or basis In V2X message (basic V2X messages, BSM), and it is typically designed to periodically produce under the control of DSRC modules 154. Emergence message can pass through decentralized environment notification message (decentralized environment notification Messages, DENM) transmission.These message are referred to as V2X message.In one embodiment, V2X message is in a certain frequency range Generation, such as from 1Hz (1 time per second) to 10Hz (every 0.1 second 1 time).

These functions of DSRC modules 154 can be performed by suitable component, such as processor and transmitter.Implement below The concrete structure of DSRC modules 154 is further described in example.

Processor 158 is used to go forward side by side one around one or more low signal areas of equipment 150 based on dynamic map identification Step is used for the area message for generating instruction low signal areas.Dynamic map is that dynamic positioning letter is combined with static number map The map of breath.For example, static number map can be obtained according to the geodata being for example stored in memory 160.Geographical number According to longitude, latitude and elevation information can be included.In addition, geodata may further include the information of environmental objects, such as Traffic attribute and communication node feature.But unless shown on the display unit of equipment, static number map and/or dynamic Map need not use the form of digital picture, can be the data packet containing all information needed for generation digital picture.Example Such as, dynamic map can be (a kind of by local dynamic map (local dynamic map, LDM) facility in DSRC modules 154 Software program) the V2X message that is received based on the location information received, from other traffic objects and geodata generation.Example Such as, generating dynamic map by using traffic attribute, static roadside unit and communication node feature, cross feature and can be used for With reference to and the terrestrial reference of positioning extend static number map, and containing interim provincialism information, such as the traffic thing near vehicle The dynamic location information of body.In one embodiment, dynamic map is updated with a certain frequency.For example, renewal frequency can be equal to V2X Transmission of news frequency, because dynamic map can be based on the V2X information updatings received from other traffic objects.LDM facilities by 302 No. 895 etsi standards of ETSI EN are specified, and are not further described herein.

Meanwhile LTE communication module 156 is used for transmission the area message of instruction low signal areas to mobile network node, with And when low signal areas is in the critical distance of equipment 150,154 generation of instruction mobile network node transmission DSRC modules V2X message is extremely located in low signal areas or one or more traffic objects on NOLS directions.

Therefore, V2X message can be transmitted by DSRC channels and mobile network in low signal areas or in NOLS Traffic object on direction, thus improves transmission reliability.

Communication equipment 150 can use different structure and component to realize, such as the communication equipment shown in Fig. 3 and Fig. 5.

Fig. 3 is the block diagram according to the communication equipment 100 of the embodiment of the application.Communication equipment 100 includes various circuits And hardware module, hardware module include primary processor 102, DSRC modules 104, LTE communication module 106 and memory 108, and It is alternatively possible to including user interface 110.

DSRC modules 104 can include processor 120, transmitter 124, receiver 126 and memory 122.Implement one In example, receiver 126 is used to perform the function that receiver 152 performs in similar Fig. 2, i.e. receives location information.Such positioning letter Breath is so that communication equipment 100 can determine its current location, current translational speed and current moving direction.In addition, receiver 126 For receiving V2X message from other traffic objects.The present bit of other traffic objects can be determined from the V2X message received Put, current translational speed and current moving direction.

Alternatively, as communication equipment 150, communication equipment 100 can be received using dedicated receiver (Fig. 3 is not shown) Location information.It is to be understood that whether pipe receivers are not included in DSRC modules 104 or outside DSRC modules 104, can Realize the identical function for receiving location information and V2X message.

Dynamic map can be performed local dynamic map (local dynamic map, LDM) facility (one by processor 120 Kind of software program) in instruction generation.After dynamic map is generated, DSRC modules 104 share dynamic map with primary processor 102 (or data packet corresponding to dynamic map).

It is as previously mentioned, communication equipment 100 can include user interface 110.User interface 110 can include any element Or component passes on information to the user of communication equipment 100 and/or receives input from the user, such as keyboard, microphone, raise one's voice Device and/or display unit.Such as V2X message can be automatically generated or created by user interface 110 by the user of communication equipment 100 Build.In one embodiment, dynamic map is shown on the display unit of user interface 110.

The function of DSRC modules 104 is in 302 637-2 European Telecommunications Standards Institute (European of ETSI EN Telecommunications Standards Institute, ETSI) specify in standard, herein without being discussed in detail.

Based on dynamic map, the identification of primary processor 102 is around equipment or one or more low signal areas of vehicle.One In embodiment, low signal areas is region or subregion, in region or subregion, through path slave device to another vehicle or traffic Being wirelessly transferred for object is hindered completely or partially, is typically hindered by physical objects.Due between transmission end and receiving terminal NLOS situations, may become poorly efficient by DSRC channels through path transmission signal.Usually cause the barrier bag of NLOS situations Static-obstacle thing, such as building, tree, massif, mountain etc. are included, moving obstacle is further included under certain situation, for example, large-scale or high Big vehicle.As discussed below, barrier may cause various degrees of path loss, can use different path loss Model calculates the path loss values of the point on the dynamic map related with vehicle.

In general, path loss is to be transferred to reception from transmission end as caused by the environmental condition between transmission end and receiving terminal The signal strength loss of the signal experience at end.As described above, the example bag of the environmental condition of a large amount of path losses may be caused Include transmission end to the building between receiving terminal, tree, vehicle, crosspoint and distance etc..In one embodiment, current environmental condition Indicate the object around communication equipment 100.The composition of environment and traffic object can be categorized as different types of on dynamic map Environmental condition.Each type of environmental condition can be by a path loss model table for being used to calculate signal path loss value Show.Every group of program code corresponds to a path loss model, can be stored in memory 108 based on primary processor 102 Calculate path loss values.For example, path loss model A can represent urban environment, and the influence including building；Path loss mould Type B can represent highway environment, and including tall and big or oversize vehicle influence on highway；And path loss module C can represent intersecting environment, and include the influence of building and bridge etc.；May also have and represent other environmental conditions or its combination Other path loss models.

In one embodiment, primary processor 102 is based on the environmental condition indicated on dynamic map, from being stored in memory One or more path loss models are selected in some path loss models in 108.For example, primary processor 102 is based on dynamic The environment in cartographic analysis vehicle periphery region.In one embodiment, peripheral region can be defined as vehicle periphery unit length half The border circular areas in footpath., can for example, if primary processor 102 determines that current environment is the main classes of cities for including building To select path loss model A to calculate path loss values.The example of path loss model can be found in various publication, For example, S.Biddlestone etc. is in December, 2012《IEEE intelligent transportation system transactions》No. 4 1792-1802 of volume 13 " the vehicle of integrated form 802.11p WAVE DSRC and city (LOS and NLOS) propagation model using experimental verification that page is delivered Traffic simulator (An Integrated 802.11p WAVE DSRC and Vehicle Traffic Simulator With Experimentally Validated Urban (LOS and NLOS) Propagation Models) " describe and consider The path loss model for urban environment of effect on building.However, it is understood that the path damage that can be used in present application Consumption model is not limited to any particular path loss model.

After the one or more path loss models of selection, primary processor 102 calculates signal from current vehicle position to dynamic The path loss values of one or more points on state map.Specifically, each path loss values are passed based on two points i.e. signal The position of defeated point and signal receiving point, the parameter and transmission signal strength for representing selected path loss model (transmitted signal strength, TSS) is calculated.Path loss values are institute's transmission signals in signal receiving point Loss value.Therefore, on the current location and dynamic map by inputting communication equipment 100 or vehicle the position of certain point and TSS, it is possible to calculate the loss value in the point.Meanwhile based on path loss values, it can be calculated and believed according to below equation (1) Received signal strength (received signal strength, RSS) value of number receiving point：

RSS=TSS- path losses (1)

Wherein TSS is transmission signal strength.It is consequently possible to calculate each put on from current vehicle position to dynamic map RSS values.

In one embodiment, dynamic map is divided into one or more unit areas by primary processor 102, unit area Size depends on the computing capability of primary processor 102.For example, unit area can be 1 meter of pros for multiplying 1 meter (1x1 square metres) Shape region or the region of different shape or size.For each in these unit areas, selected by primary processor 102 utilizes One or more path loss models for region, based on from the center of unit area to communication equipment 100 or vehicle Distance, calculates RSS values.In one embodiment, primary processor 102 be further used for by based on it is selected for region one A path loss model or some path loss models, calculate the RSS values of each unit area divided on dynamic map, generation Propagate map.

The RSS values calculated are known as weak signal unit area less than the unit area of predetermined threshold.Predetermined threshold can root Adjusted according to transmission signal strength.Primary processor 102 is further used for some weak signal unit areas being classified as in a region. In one embodiment, the weak signal unit area of set is referred to alternatively as related NLOS regions.

Meanwhile NLOS regions are calculated in order to ensure accurate, primary processor 102 is updated in some frequencies propagates map.For example, The frequency of dynamic map renewal can be equal to by propagating the renewal frequency of map, or equal to V2X transmission of news frequencies, such as 10Hz。

In one embodiment, in order to improve the efficiency of primary processor 102, primary processor 102 can only be calculated and closely surrounded RSS values in the region of communication equipment 100 or vehicle generate propagation map.In other words, primary processor 102 is not to calculate RSS Value entirely propagates map to update, and can only renewal close to the propagation map in peripheral region and calculate close in peripheral region The RSS values of corresponding unit area.An example close to peripheral region can be the unit circle with radius.Radius can basis The computing capability of primary processor 102 is adjusted, for example, the computing capability of higher corresponds to the radius of bigger.In one embodiment, it is main The renewal propagation map of processor 102 is equal to what 102 analysis environments of primary processor as described above were based on close to peripheral region Peripheral region.

In one embodiment, in order to further optimize the performance of primary processor 102, primary processor 102 calculates dynamically The RSS values of the unit area overlapping with road generate propagation map on figure, it means that, it is convenient to omit it is overlapping with building The calculating of unit area.

Primary processor 102 can further determine that related NLOS regions based on the traveling situation of vehicle.Traveling situation can be with Including head-on crash warning (front-end collision warning, FCW) application and the warning (rear-end that knocks into the back Collision warning, RCW) application.Subsequent primary processor 102 is based on traveling situation and defines correlation NLOS regions.For example, In FCW applications, those unit areas that primary processor 102 defines vehicle front are correlation NLOS regions；On the other hand, exist In RCW applications, those unit areas that primary processor 102 defines rear view of vehicle are correlation NLOS regions.Traveling application can relate to And primary processor 102 is used for calculating the environment of RSS values.One simple example is when vehicle is in be more likely to that head-on crash occurs Urban environment in when the definition of processor 102 application of advancing applied for FCW, or be more likely to the height that knocks into the back when vehicle is in The definition of processor 102 advances application as RCW applications when in fast highway environment.

Transmitter 124 in DSRC modules 104 passes through DSRC channels broadcast V2X message in communication range.Such as institute above State, V2X message can include the regular message of such as CAM and the emergency message of such as DENM.In one embodiment, regular message DSRC channels broadcasts can be passed through by transmitter 124 with emergency message.In the broadcast of DSRC message, it can use, for example, IEEE WAVE or ETSI ITS G5 agreements.Communication range can change according to the type of V2X message.For example, CAM message can To be transferred to by ITS stations (ITS station, ITS-S) of starting in the direct communications range defined in 102 637-2 of ETSI TS All ITS-S.On the other hand, DENM message can travel to the associated region defined in 102 637-3 of ETSI TS Interior ITS-S as much as possible.In addition, the receiver 126 in DSRC modules 104 can be used for receiving other traffic object transports V2X message.

The LTE module 106 of communication equipment 100 can by it is a kind of be similar to mobile terminal in a manner of with LTE network base station (example Such as, eNodeB) communicate.For example, the LTE module 106 of communication equipment 100 passes through base station and the various network sections of LTE network Point communication.Under the control of primary processor 102, LTE module 106 is used to recognize low signal areas or correlation NLOS regions Afterwards, the region/NLOS message in instruction low signal areas or correlation NLOS regions is just transmitted to LTE network node, and when weak letter When number region or correlation NLOS regions are in the critical distance of vehicle, instruction LTE network node transmits V2X by LTE network and disappears Cease to one or more relevant traffic objects.As shown in figure 3, LTE module 106 includes processor 130, transmitter 134, receiver 136 and memory 132.Determine that V2X message is sent relevant traffic object extremely by LTE network based on NLOS regions, it is related The identification of traffic object will be further described with reference to Fig. 6.

Specifically, present speed estimation critical distance of the primary processor 102 based on vehicle.As shown in figure 4, critical distance can Be defined as mobile object in a certain amount of time from current location advance to mobile object may with another object collide possibility Point the distance between.The center of circle in Fig. 4 shows the point of impingement that vehicle 282 and vehicle 292 assume.As example, circle 294 (25 meters) of radius represent distances from the position of vehicle to the point of impingement, the position of vehicle can on any point of circle 294, The point of impingement is the center of circle.Assuming that the gait of march of vehicle is 30km/hr, vehicle can reach the point of impingement in 3 seconds, and estimation is driven The reaction time for the person of sailing is 3 seconds.Therefore, 25 meters are with the critical distance of the vehicle of the speed traveling of 30km/hr.Alternatively, circle 296 (42 meters) of radius represent to assume the critical distance of the vehicle advanced when the reaction time remain as 3 seconds with the speed of 50km/hr.

Reaction time in view of the mankind be it is relative constant, can the present speed based on vehicle roughly estimate it is critical Distance.In one embodiment, memory 108 can be stored in by representing the chart of the correspondence of critical distance and car speed In.In another embodiment, it is stored in for calculating the algorithm of critical distance as the function of car speed in memory 108. Primary processor 102 can inquire about chart to estimate critical distance according to the present speed of vehicle, or use algorithm and car speed Calculate critical distance.In addition, critical distance can further relate to the reaction time needed and other scenes.Can be in X.Yan Deng at 2 months 2015《Transportation research C portion：Emerging technology》Delivered on 231-242 pages of volume 51 " vehicle-mounted voice warning is fixed When to driver the anticollision behavior of signalized crossing influence (The Influence of In-Vehicle Speech Warning Timing on Drivers'Collision Avoidance Performance at Signalized Intersections an example is found in) ".

Transmitter 134 in subsequent LTE module 106 utilizes mobile network node, for example, the application server of LTE network And/or LTE multimedia broadcast multi-broadcasting business (multimedia broadcast multicast service, MBMS) server To propagate V2X message.Specifically, the low signal areas/NLOS regions in the transmission of LTE module 106 instruction weak signal/NLOS regions Message is indicated to MBMS service device, and when weak signal/NLOS regions are in the critical distance of communication equipment 100 or vehicle MBMS service device transmits V2X message to one or more traffic objects in weak signal/NLOS regions by mobile network.

In one embodiment, the transmission mode for designing two replacements is used to forward V2X message to relevant traffic object：Broadcast All traffic objects into the related cell for corresponding to weak signal/NLOS regions, or be only multicasted to V2X message and be identified as phase The traffic object of pass.Specifically, LTE network module 106 transmits the application in weak signal/NLOS area messages to LTE network Server.Weak signal/NOLS area messages include the location information of the relevant traffic object in weak signal/NLOS regions.Then, Application server obtains related cell mark (identifications, ID) or provides phase based on weak signal/NLOS area messages Close traffic object ID.In one example, application server generates the ID of relevant traffic object using location server.LTE The MBMS service device of network can broadcast V2X message or multicast V2X message to relevant traffic object in related cell.Hereafter tie Close Fig. 6 and further describe MBMS service device, application server and location server.In one embodiment, receiver 136 is used to connect Receive other traffic objects and pass through the V2X message transmitted by LTE network.

In addition, it is described herein make host processor 102 perform difference in functionality other computer executable programs or Instruction can be also stored in memory 108.

In one embodiment, memory 108 can be computer-readable storage of the storage using data and computer program Medium, easy to transmit data and computer program to another place from a place.It is unrestricted as example, such calculating Machine readable storage medium storing program for executing can be that RAM, ROM, EEPROM, CD-ROM or other optical disc storage, disk storage or other magnetism are deposited Store up equipment, available for by instruction or data structure in the form of carry or storage needed for program code means and can be by general Or special purpose computer or any other medium of universal or special processor access.

In general, by using communication equipment 100 according to an embodiment of the present application, by cordless communication network to Vehicle communication in weak signal or NLOS regions compensates.This improves V2X message transmission qualities, realize more reliable Communication.

Although it should be appreciated that showing three processors in communication equipment 100, it may not be needed three and physically divide The processor opened realizes the corresponding function of primary processor 102, processor 120 and processor 130.In other words, should in no way limit The quantity of processor in communication equipment 100.For example, communication equipment 100, DSRC modules 104 and LTE module 106 can be shared Same processor.Similarly, can using common memory come store path loss model according to an embodiment of the present application, Vehicle location information, geodata, dynamic map and other computer program instructions or coding.

As example, Fig. 5 shows the simplified block diagram of the communication equipment 200 of another embodiment according to the application.Communication is set Standby 200 can include processor 202, DSRC transceiver 204, LTE transceivers 206, memory 208 and user interface 210.DSRC Each in module 104 and LTE module 106 includes the processor and memory of its own, and different is DSRC transmitting-receivings Device 204 and LTE transceivers 206 each only include transmitter (224 and 234) and receiver (226 and 236).Processor 202 can be with Perform the correlation function of DSRC modules 104 and LTE module 106.Memory 208 can be used for storing DSRC modules 104 and LTE moulds The data and program code that block 106 uses.It is to be understood that by combining DSRC transceiver 204 and processor 202, it is possible to achieve can , can be with to perform the virtual DSRC modules of the function of DSRC modules 104, and by combining LTE transceivers 206 and processor 202 Realize the virtual LTE module for the function that can perform LTE module 106.Communication equipment 200 is similar with communication equipment 100 in Fig. 3 Function, therefore be not described in detail.

In another embodiment, communication equipment 150,100 or 200 can be by equipped with corresponding hardware port or plug-in unit portion The LTE terminal equipment of part is implemented, to realize DSRC communication functions.In one example, can be by connecting DSRC hardware modules And/or DSRC communication functions are realized in LTE terminal equipment using the corresponding software of download.For example, DSRC hardware ports can be with It is compatible with standard RS 232 or Ethernet.Meanwhile the software of download can provide additional function for LTE terminal equipment, by LTE Terminal device is converted to the communication equipment similar with aforementioned communication equipment 150,100 or 200.

In another embodiment, communication equipment 150,100 or 200 can be by equipped with corresponding hardware port or plug-in unit portion The DSRC equipment of part is implemented, to realize LTE communication function.

Those skilled in the art recognize that state of the art has evolved to system aspects hardware and software and implements only to deposit In little distinction, the use of hardware or software is usually (but not always, because in some cases, between hardware and software Selection may become extremely important) it is design option of the representative cost to efficiency tradeoff.It would be recognized by those skilled in the art that this The described process of text and/or system and/or other technologies (for example, hardware, software and/or firmware) can pass through various vehicles Realize, and preferable vehicle changes with the related content that process and/or system and/or other technologies are disposed.

Fig. 6 is the block diagram according to the communication system 300 of the embodiment of the application.Communication system 300 includes communication equipment 310th, application server 302, mobile network service device such as LTE multicast broadcast multimedia services (multimedia broadcast Multicast service, MBMS) server 304 and location server 306, communication equipment 310 can carry or be installed on In mobile vehicle, therefore it is wireless device.A number of other communication equipments/traffic object 308-1,308-2 ... 308-N can be with being System 300 establishes connection.In one embodiment, application server 302 and location server 306 can be located at the evolution of LTE network The outside of type packet-based core networks (evolved packet core, EPC), for example, can be integrated in MME or MBMS gateways, MBMS service device 304 can be integrated in MBMS gateways.

It is vehicle identification weak signal area that communication equipment 310, which is used for based on the dynamic map generated according to the location information of vehicle, Domain, for example, correlation NLOS regions, and vehicle communication is transmitted by LTE network when low signal areas is in critical distance and is disappeared Breath.Vehicle communication message indicates the current travel condition of vehicle, for example, vehicle communication message is the DSRC moulds of communication equipment 310 The V2X message of block generation.Communication equipment 310 in Fig. 6 is set with the communication equipment 150 shown in Fig. 2, the communication shown in Fig. 3 Communication equipment 200 shown in standby 100 or Fig. 5 has the function of identical, therefore is not described in detail.

After the related NLOS regions partly or entirely hindered there are V2X message are identified, communication equipment 310 determines V2X message is also transmitted by LTE network in addition to by DSRC network, thus initiates to create session with LTE MBMS service device 304 Process, and transmit V2X message to LTE MBMS service device 304.

In addition, after related NLOS regions are identified, communication equipment 310 just transmits NLOS message by LTE network extremely should With server 302.As shown in fig. 7, application server 302 includes receiver 402, memory 404, processor 406 and transmitter 408。

In receiver 402 after communication equipment 310 receives NLOS message, processor 406 is used to select LTE transmission pattern To transmit V2X message and the region/NLOS message in transmission instruction NLOS regions based on selected LTE transmission pattern.Such as Fig. 3 Described in, transmission mode can include broadcast mode and multicasting mode.

In one embodiment, the quantity selection transmission mode based on the traffic object that can receive V2X message.In broadcast mould In formula, all traffic objects in one or more cells overlapping with NLOS regions will receive V2X message.But V2X disappears Breath may be unrelated with traffic object, when more particularly, to Big Residential District.In multicast mode, only reception V2X in need disappears The traffic object of breath just receives V2X message.Therefore, multicasting mode can reduce the message count of unnecessary/incoherent reception Amount, reduces on-board processing.

Specifically, processor 406 is used to transmit one or more cell ID to LTE MBMS clothes when selecting broadcast mode Business device 304, traffic object ID is transmitted when selecting multicasting mode to LTE MBMS service device 304.

In a broadcast mode, the identification of processor 406 corresponds to NLOS regions and the cell layout being stored in memory 404 Overlapping region a related cell or some related cells.Specifically, processor 406 extracts NLOS areas from NLOS message Domain, and by NLOS region overlays on cell layout to obtain overlapping region.Thus the one or more in overlapping region is identified Cell is relevant.In one embodiment, different mobile network providers uses different cell layouts.Application server 302 processor 406 is additionally operable to the mobile network provider of selection LTE network.In the case, the place of application server 302 Manage device 406 and select one in cell layout according to selected mobile network provider information with the one or more correlations of identification Cell.In one embodiment, it is contemplated that application server 302 can correspond to multiple LTE network providers, application server 302 can be with belonging to specific LTE network provider EPC in any one be provided separately.

In addition, application server 302 transmits the cell ID of one or several cells that is identified to LTE MBMS service devices 304.After cell ID is received, LTE MBMS service device 304 broadcasts V2X message in related cell.It is it is expected that one or more All traffic objects in related cell all receive V2X message.

Alternatively, in multicast mode, application server 302 obtains relevant traffic object ID using location server 306.Such as Shown in Fig. 8, location server 306 includes receiver 502, memory 504, processor 506 and transmitter 508.Memory 504 is used In the travel information for providing traffic object, such as, it is possible to provide the accurate location and directional information of each traffic object.Implement one In example, memory 504 can be used for the travel information for only providing a certain number of specified traffic objects.For example, it can be based on handing over The type of logical object determines the traffic object specified.After receiver 502 receives NLOS message, processor 506 is based on handing over Traffic object in the travel information identification NLOS regions of logical object.Specifically, traffic object of the processor 406 based on storage Travel information analyze the position of each traffic object, and identify the traffic object in NLOS regions.Transmitter 508 then transmits Corresponding to identification traffic object traffic object ID to application server 302, application server 302 forwards traffic object ID extremely LTE MBMS service device 304.In one embodiment, the travel information for the traffic object being stored in memory 504 is based on a certain Frequency updates.In LTE multicast scenes, traffic object ID can be expressed as the IP address of traffic object.

In one embodiment, application server 302, which transmits, includes the request message in NLOS regions to location server 306, Location server 306 is responded with answer message to indicate relevant traffic object ID.Exemplary ask is shown respectively in Fig. 9 and Figure 10 Ask message format and exemplary answer message form.As shown in figure 9, it is request type that request message, which includes instruction current message, " type " field.Request message can further comprise " promoter " field and NLOS fields." promoter " field represents sender That is the IP address of application server 302, NLOS fields can include the information in instruction NLOS regions.For respond request, position clothes Business device 306 sends answer message.As shown in Figure 10, answer message also includes " type " field and represents transmitter, that is, location-based service " promoter " field of the IP address of device 306.Answer message further comprises the IP address for being presented in relevant traffic object The IP fields of list.

In one embodiment, the storage of memory 504 of application server 302 can provide the travel information of traffic object Database.Therefore, application server 302 does not access location server 306, but inquires about the memory 504 of its own to obtain Traffic object ID.

Therefore, application server 302 forwards traffic object ID to LTE MBMS service device 304.Receiving traffic object ID Afterwards, MBMS service device 304 is according to traffic object ID multicast V2X message to relevant traffic object.

In general, by using the communication system 300 of the embodiment according to the application, improved by LTE network Communication quality in NLOS regions.Meanwhile a variety of LTE transmission patterns can be selected to transmit V2X message to some relevant traffic things Body.This improves efficiency of transmission, transmission form are more flexible.

Referring to Figure 11, Figure 11 shows the communication means 800 performed by communication equipment of the embodiment according to the application.Knot Close Fig. 2 to Fig. 5 and describe Figure 11.Communication equipment can be the communication equipment 150 in Fig. 2, in communication equipment 100 or Fig. 5 in Fig. 3 Communication equipment 200.

In step 810, receiver receive instruction communication equipment and the current location of miscellaneous equipment, current translational speed and The location information of current moving direction, receiver can be dedicated short-range communication (dedicated short range Communication, DSRC) receiver 126 in module (DSRC modules 104 or DSRC modules 204), or communication equipment 150 In dedicated receiver 152.

In step 820, for processor based on location information identification around the low signal areas of equipment, processor can be figure The processor 202 in the primary processor 102 or Fig. 5 in processor 158, Fig. 3 in 2.In one embodiment, low signal areas can Think the related NLOS regions of vehicle that communication equipment 150,100 or 200 is located at or installs.For example, correlation NLOS regions can be with For region or subregion, in region or subregion, across DSRC network through path to another traffic object be wirelessly transferred by Hinder, typically hindered by physical objects completely or partially.

In one embodiment, as shown in figure 12, step 820 may comprise steps of to identify the weak signal around equipment Region.

In step 820-1, dedicated short-range communication (dedicated short range communication, DSRC) mould Block is based on location information and the geodata being stored in DSRC memories generation around the dynamic map in the region of equipment, DSRC Module can be the virtual DSRC modules in DSRC modules 104 or Fig. 5 in Fig. 3.For example, the LDM facilities in DSRC modules 104 Dynamic map can be generated based on the information received.Alternatively, when the correspondence performed on the memory 208 of storage in Figure 5 refers to When making, processor 202 can realize the function of LDM facilities, to generate dynamic map.In one embodiment, DSRC memories can Think the memory 208 in memory 122 or Fig. 5 in Fig. 3.

In step 820-2, processor identifies weak signal according to the current environmental condition of communication equipment on dynamic map Region.As shown in figure 13, step 820-2 may comprise steps of to identify around the low signal areas of equipment.

In step 820-2-2, processor will be multiple unit areas around the region division of equipment on dynamic map.

In step 820-2-2, processor selects one or more according to the environment of equipment from multiple path loss models A path loss model.For example, primary processor 102 or processor 202 current location and dynamic map based on vehicle determine to work as Preceding environment, then correspondingly selects one or more path loss models according to current environment.Path loss model is stored in In reservoir, and each in path loss model corresponds to a kind of environment.In one embodiment, memory, can be Fig. 3 In memory 108 or Fig. 5 in memory 208, store multigroup program code, every group corresponds to a path loss model. Based on one or more path loss models, the received signal strength (received each put on dynamic map can be calculated Signal strength, RSS) value.Dynamic map can be as shown in Figure 3 by the local dynamic map in DSRC modules 104 (local dynamic map, LDM) facility is based on the information generation received, or is performed by processor 202 and be stored in memory Based on the information generation received during instruction on 208.In general, path loss is referred to by the environment between vehicle and receiving terminal Caused by vehicle transmit signal experience loss.As described above, the reality of the environmental condition of a large amount of path losses may be caused Example includes building, tree, vehicle, crosspoint and distance etc..Therefore, typical environmental condition can be by for calculating signal path The path loss model of loss represents.In one embodiment, every group of program code corresponds to a path loss model, Ke Yicun It is stored in memory 108 or memory 208.

In step 820-2-3, if processor is calculated on dynamic map respectively based on selected at least one RSS models Some RSS values of the unit area of dry division.Specifically, the position of two point, that is, transmission point signals and signal receiving point and Transmission signal strength inputs each path loss model, loss value of the transmitted signal of output in signal receiving point.Therefore, it is sharp The RSS values each put to dynamic map slave device current location can be calculated with equation illustrated above (1).It is in addition, real one Apply in example, dynamic map is divided into unit area by processor.For each in these unit areas, processor utilizes institute One or more path loss models of selection, based on from the center of unit area to installation communication equipment 100 communication equipment/ The distance of vehicle calculates RSS values.

In step 820-2-4, the weak signal unit area that threshold value is less than corresponding to RSS values is classified as one group by processor. In one embodiment, weak signal unit area can be classified as related NLOS regions.

In one embodiment, in step 820-2-5, the traveling situation selection that processor is based further on communication equipment is weak Signal area, wherein, such as the related explanations of Fig. 3, traveling situation is determined according to environment.

Referring back to Figure 11, in step 830, the area message of processor generation instruction low signal areas.

In step 840, the one or more vehicle communication message of DSRC modules generation.In one embodiment, vehicle communication Message can be V2X message, in figure 3 it is stated that being not described in detail herein.

In step 850, mobile network's module transfer vehicle communication message is to mobile network node.For example, mobile network Module can be the LTE module 106 in Fig. 3 or the virtual LTE module in Fig. 5, and mobile network node can be in Fig. 6 to Fig. 8 Described application server and/or LTE MBMS service device.

In step 860, when low signal areas is in the critical distance of equipment, mobile network's module instruction mobile network Node transmits vehicle communication information to one or more traffic objects in low signal areas by mobile network.It is real one Apply in example, present speed estimation critical distance of the processor based on vehicle, critical distance has described in figure 3, no longer detailed herein Describe in detail bright.

In one embodiment, in step 870, DSRC modules are communicated in communication range by DSRC network broadcasting van Message.In one embodiment, as Fig. 3 associated descriptions, communication range can change according to the type of V2X message.

Therefore, in low signal areas, communication equipment can transmit vehicle communication by DSRC network and mobile network and disappear Breath, thus improves transmission reliability.

Referring to Figure 14, Figure 14 shows the communication means 1000 of the embodiment according to the application.Described with reference to Fig. 2 to Fig. 9 Figure 14.

In step 1010, communication equipment receives current location, current translational speed and the current movement side of instruction equipment To location information.Communication equipment can be the communication equipment 200 in communication equipment 100 or Fig. 5 in Fig. 3.

In step 1020, communication equipment surrounds the low signal areas of equipment based on location information identification.Identify weak signal The process in region has described in detail in Fig. 2 and Fig. 9, is not described further herein.

In step 1030, when low signal areas is in critical distance, communication equipment transmits vehicle by mobile network The current travel condition of communication information, wherein vehicle communication message instruction equipment.Critical distance has been described in detail in figure 3, This is not described further.

In step 1040, mobile network service device forwarding vehicle communication message to one in low signal areas or Multiple traffic objects.Mobile network service device can be the LTE MBMS service device 304 in Fig. 6.

In one embodiment, step 1040 can be realized by performing following steps shown in Figure 15.In step 1040-1 In, the processor of application server just selects transmission mode to transmit vehicle communication information after vehicle communication message is received, Processor can be the primary processor 406 in Fig. 7.

In step 1040-2, when selecting broadcast transmission mode, transmitter transmits one or more cell ID to movement The webserver, transmitter can be the transmitter 408 of application server 302.In one embodiment, can be following by performing Step obtains cell ID：In step 1040-2-1, the region that 402 receiving communication device of receiver of application server is sent disappears Breath；In step 1040-2-2, the processor 406 of application server is by identifying the overlay region of low signal areas and cell layout The one or several cells that domain is covered determine cell ID.In one embodiment, cell layout is stored in depositing for application server In reservoir 404.Application server can be application server 302 or application server 400.

In step 1040-3, mobile network service device receives the small of one or more cells of identification from application server Area ID.

In step 1040-4, mobile network service device broadcasting van communication information to the traffic object in cell.Change speech It, if selection broadcast transmission mode, mobile network service device broadcast V2X message to forward V2X message to traffic object.

In step 1040-5, when selecting multicast transmission mode, the transmitter 408 of application server transmits at least one Traffic object ID is to mobile network service device.

In one embodiment, application server can generate traffic object ID including location server, can include with Lower step：In step 1040-5-1, the request message of the transmitter transmission instruction low signal areas of application server；In step In 1040-5-2, the receiver of location server receives request message；Traveling of the processor 506 based on storage of location server One or more traffic objects in information identification low signal areas, travel information can be stored in memory, such as memory 504；In step 1040-5-3, the processor of location server provides traffic object ID.Location server can be in Fig. 6 Location server 500 in location server 306 or Fig. 8.

In one embodiment, application server generation traffic object ID, without being related to location server.In the case, Application server includes the memory that can store the travel information of traffic object.In one embodiment, travel information is with a certain Frequency updates.Traffic object ID generating process may comprise steps of：In step 1040-5-4, the processing of application server Traffic object in travel information identification low signal areas of the device 406 based on storage.For example, travel information can be stored in Fig. 6 In application server memory 404 in；In step 1040-5-5, processor provides traffic object ID.

In step 1040-6, mobile network service device receives traffic object ID.In one embodiment, in LTE multicasts field Jing Zhong, traffic object ID can be expressed as the IP address of traffic object.

In step 1040-7, mobile network service device according to the traffic object ID multicast vehicle communications message received extremely Traffic object.

In one embodiment, in step 1050, communication equipment passes through dedicated short-range communication in communication range (dedicated short range communication, DSRC) Web broadcast vehicle communication message.As illustrated in Figure 3, Communication range can change according to the type of V2X message.

In conclusion communication equipment identification surrounds the NLOS regions of communication equipment, and send the region in instruction NLOS regions Message.Meanwhile when NLOS regions are in critical distance, communication equipment is passed through using mobile network service device forwarding V2X message Mobile network is to one or more relevant traffic objects.Relevant traffic object is identified using application server and selects to be used to move The transmission mode of the webserver.When selecting broadcast transmission mode, application server provides one for mobile network service device Or multiple cell ID.Thus, mobile network service device can broadcast V2X message and mobile network is used into one or more cells All users.When selecting multicast transmission mode, application server provides one or more traffic for mobile network service device Object ID.Thus, mobile network service device can be with multicast V2X message to corresponding traffic object.It is thereby achieved that V2X disappears Cease the reliability and efficiency of transmission.

It is to be understood that Figure 11 is not limited to continuously perform to the feature described in Figure 15, on the contrary, cover can be different for the disclosure It is step, parallel, parallel, at the same time, synchronously and/or the thread of the arbitrary number of similar execution, process, business, server and/or similar Person.In this way, these a part of features may be opposing one another, because can not occur at the same time in single embodiment.Similarly, part Feature is suitable for the invention on one side, is not suitable for other side.

The above includes the example of one or more embodiments.Certainly, for the mesh that above-described embodiment is described , it is impossible that every kind of possible combination to device or method, which illustrates, but those of ordinary skill in the art can be true Recognize being further combined and arranging there may be various embodiments.Correspondingly, the purpose of the embodiment is comprising all The available change of this spirit according to the present invention and the scope of the appended claims, modification and deformation.Further Ground, one word of " comprising " either still used in detail in the claims in specific embodiment, the meaning and " bag expressed by it Containing " word is similar, one word of "comprising" is used as transitional word in the claims.

Claims

A kind of 1. communication equipment, it is characterised in that including：

Receiver；Processor；Memory；Form dedicated short-range communication (dedicated short range Communication, DSRC) module circuit；And the circuit of mobile network communication module is formed,

Wherein,

The receiver is used to obtain the current location for indicating the communication equipment, current translational speed and current moving direction Location information, and receive the location information of one or more of the other equipment；

The processor is used for based on described in the geodata and the equipment and miscellaneous equipment being stored in the memory Location information identification indicates the area message of the low signal areas around the low signal areas of the equipment, and generation；

The DSRC modules are used to generate communication information；And

Mobile network's module, which is used for transmission, indicates the area message of the low signal areas to mobile network node, with And when the low signal areas is in the critical distance of the equipment, indicate that the mobile network node transmission communication disappears One or more equipment of the breath extremely in the low signal areas.
2. communication equipment according to claim 1, it is characterised in that the DSRC modules are further used for：

The location information based on the geodata and the equipment and miscellaneous equipment, generation is around the region of the equipment Dynamic map.
3. communication equipment according to claim 2, it is characterised in that in identification around the low signal areas of the equipment In, the processor is used for：

The low signal areas is identified on the dynamic map according to the current environmental condition of the communication equipment, wherein described Object of the current environmental condition instruction around the communication equipment.
4. communication equipment according to claim 3, it is characterised in that the memory is further used for storing multiple paths Loss model, each in the path loss model corresponds to an environmental condition, wherein knowing on the dynamic map In not described low signal areas, the processor is used for：

To be multiple unit areas around the region division of the equipment on the dynamic map；

It is that each unit area selects a path damage from the multiple path loss model according to the current environmental condition Consume model；

Received signal strength (received signal strength, RSS) model based on selection calculates the dynamic map On unit area RSS values；And

The unit area that RSS values are less than to threshold value is classified as the low signal areas.
5. communication equipment according to claim 2, it is characterised in that the dynamic map is updated based on preset frequency.
6. communication equipment according to claim 1, it is characterised in that the DSRC modules are further used in communication range It is interior that the communication information is broadcasted by DSRC network.
7. a kind of method of communication equipment and other communication apparatus communications, it is characterised in that including：

Receive the location information of the current location for indicating the communication equipment, current translational speed and current moving direction；

Receive the location information of one or more of the other equipment；

The location information of geodata and the communication equipment and other communication equipments based on storage, identification is around described The low signal areas of communication equipment；

Generate communication information and indicate the area message of the low signal areas；And

Transmission indicates the area message of the low signal areas to mobile network node, and when the low signal areas exists When in the critical distance of the equipment, indicate that the mobile network node transmits the communication information and is extremely located at the weak signal area One or more communication equipments in domain.
8. the method according to the description of claim 7 is characterized in that further comprise：

The location information based on the geodata and the equipment and miscellaneous equipment, generation is around the region of the equipment Dynamic map.
9. according to the method described in claim 8, it is characterized in that, identify around the equipment low signal areas in, institute The method of stating includes：

The low signal areas is identified on the dynamic map according to the current environmental condition of the communication equipment, wherein described Object of the current environmental condition instruction around the communication equipment.
10. according to the method described in claim 9, it is characterized in that, the low signal areas is identified on the dynamic map In, the described method includes：

To be multiple unit areas around the region division of the equipment on the dynamic map；

It is each unit area choosing from the path loss model of multiple storages according to the current environmental condition of the unit area A path loss model is selected, wherein each in the path loss model corresponds to an environmental condition；

Received signal strength (received signal strength, RSS) model based on selection calculates the dynamic map On unit area RSS values；And

The unit area that RSS values are less than to threshold value is classified as the low signal areas.
11. according to the method described in claim 8, it is characterized in that, the dynamic map is updated based on preset frequency.
12. the method according to the description of claim 7 is characterized in that further comprise：

The communication information is broadcasted by DSRC network in communication range.
A kind of 13. communication system, it is characterised in that including：

Communication equipment, for receiving the current location for indicating the equipment, current translational speed and the positioning of current moving direction Information, and location information is received from one or more of the other equipment, based on location information identification around the equipment Low signal areas, transmission indicate the area message of the low signal areas, and when the low signal areas is in critical distance When communication information transmitted by mobile network；And

Mobile network service device, for forwarding the communication information to the one or more in the low signal areas to set It is standby.
14. communication system according to claim 13, it is characterised in that further comprise：

Application server, coupled to the communication equipment and mobile network service device, wherein the application server includes：

Processor, for selecting transmission mode to transmit the communication information；And

Transmitter, for when selecting broadcast transmission mode, transmitting one or more cell IDs (identification, ID) To the mobile network service device, and when selecting multicast transmission mode, one or more device ids are transmitted to the movement The webserver.
15. communication system according to claim 14, it is characterised in that the application server further comprises：

Memory, for storing the travel information of the miscellaneous equipment, wherein the processor is further used for depositing based on described The travel information of storage and the area message identify the equipment in the low signal areas, and provide the device id.
16. communication system according to claim 15, it is characterised in that in the communication information is forwarded, the movement The webserver is used for communication information described in multicast to the equipment for corresponding to the device id.
17. communication system according to claim 14, it is characterised in that in the communication information is forwarded, the movement The webserver is used to broadcast the institute in the communication information to the one or more cells for corresponding to one or more cell ID Equipment is stated, wherein the cell ID is generated based on the area message.
A kind of 18. communication equipment, it is characterised in that including：

Processor；And

Non-transient computer-readable recording medium, has the computer executable instructions being stored thereon and geodata, institute Computer executable instructions are stated when being performed by the processor so that the processor：

Obtain the location information of the current location for indicating the communication equipment, current translational speed and current moving direction, and from One or more of the other equipment receives location information；

The location information based on geodata and the equipment and miscellaneous equipment, identification is around the weak signal area of the equipment Domain；

Generation indicates the area message and communication information of the low signal areas；And

Transmission indicates the area message of the low signal areas to mobile network node, and when the low signal areas exists When in the critical distance of the equipment, indicate that the mobile network node transmits the communication information and is extremely located at the weak signal area One or more equipment in domain.
19. communication equipment according to claim 18, it is characterised in that the computer executable instructions are by described When managing device execution, further such that the processor：

The location information based on the geodata and the equipment and miscellaneous equipment, generation is around the region of the equipment Dynamic map.
20. communication equipment according to claim 19, it is characterised in that the computer executable instructions are by described When managing device execution, further such that the processor：

The low signal areas is identified on the dynamic map according to the current environmental condition of the communication equipment, wherein described Object of the current environmental condition instruction around the communication equipment.