CN103796253A - System of communication between terminal equipment and external network in vehicle - Google Patents
System of communication between terminal equipment and external network in vehicle Download PDFInfo
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- CN103796253A CN103796253A CN201310106000.5A CN201310106000A CN103796253A CN 103796253 A CN103796253 A CN 103796253A CN 201310106000 A CN201310106000 A CN 201310106000A CN 103796253 A CN103796253 A CN 103796253A
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Abstract
The invention discloses a system of communication between terminal equipment and an external network in a vehicle. The system comprises a first communication module and a second communication module. To be specific, the first communication module arranged at the vehicle includes a compartment bridge. The second communication module includes a plurality of vehicle-to-ground network bridges that are arranged at the running route of the vehicle at a predetermined interval. The first communication module and the second communication mode carry out communication with each other by using a communication network and communication with an external network is also realized by the second communication module. According to the technical scheme, the throughput capacity of the communication system of the traffic system with the high-flow density running route can be enhanced and the communication system bandwidth is also improved. Moreover, the high-speed internet surfing demand with more than 1-Mbps speed for each user can be satisfied, so that the users of the communication system can enjoy the high-quality and high-speed internet surfing experience.
Description
Technical field
The present invention relates to the system that terminal equipment in the vehicles and external network communicate.
Background technology
In recent years, traffic problems are the persistent ailments of puzzlement urban development always.In order to tackle traffic problems, the vehicles of many working lines arise at the historic moment, wherein the most representative subterranean railway that surely belongs to.Subterranean railway is called for short subway or subway, and specially finger operates to main city railway system or rapid transit system (RTS) underground narrowly; In a broad sense, because many this type of systems are in order to coordinate the environment of build, the section that may also have esd ground exists, and therefore conventionally having contained all can the various underground and ground high density traffic and transportation system in area.
Along with subway becomes the preferred traffic instrument that urban population is gone on a journey gradually, people spend in the time of taking on subway and also get more and more, thus to having higher requirement with the communication system of subway.Due to subway line complexity, the warehouse-in outbound mode of subway train is different from the general vehicles, therefore existing traffic communication system is difficult to be suitable for the communication of subway train, and the WLAN (WLAN) that is especially difficult to be suitable for subway transportation system is laid.
At present, in the traffic system of working line, especially in underground railway track, can the substantially available communication system of layout.But the transmission speed of current communication system, especially wireless network is not outstanding, can't realize smoothly the operation such as video calling, high-speed downloads, also cannot meet the growing demand of broad masses of the people to wireless communications traffic and speed.In addition, in subway circulation process, often run at present go offline, data misinformations problem, this is that the rate of substitute, the error rate are all higher owing to being arranged at present wireless network in underground railway track unstable.Therefore, industry is badly in need of a kind of high performance wireless coverage scheme, to meet the growing terminal equipment of the common people as the demand to internet access such as smart mobile phone, panel computer, and guarantees the safety and stability of access to netwoks.
Summary of the invention
In the face of above-mentioned defect of the prior art, the present invention proposes terminal equipment in a kind of vehicles and the system of external network communication, solve the technical problem of carrying out radio communication of the vehicles that how to be suitable for working line.
The invention provides terminal equipment in a kind of vehicles and the system of external network communication, comprising: first communication module, be arranged on the vehicles, first communication module comprises compartment bridge; And second communication module, comprise multiple cars bridge over the ground, multiple cars over the ground bridge are provided at predetermined intervals on the working line of the vehicles, wherein, between first communication module and second communication module, utilize communication network to communicate and communicate by second communication module and external network.
Preferably, first communication module also comprises switch, and switch is connected with compartment bridging communication, and is provided at least one access point of network service for terminal equipment.
Preferably, in the time that terminal equipment moves to the second access point from the first access point, this system realizes the seamless roam of terminal equipment from the first access point to the second access point by Radio Access Controller.
More preferably, the second access point is for sending to Radio Access Controller by the authentication of the terminal equipment receiving and reassociation requests.Radio Access Controller comprises: authentication checks module, and in the time receiving the authentication of terminal equipment that described the second access point transmits and reassociation requests, whether sense terminals equipment authenticates; Series of fortified passes connection indicating module, when terminal equipment detected by the first access point authentication in authentication checks module, sends the second access point and terminal equipment and sets up indication that series of fortified passes joins to described the second access point.The second access point also, in the time receiving the second access point and terminal equipment and set up the indication of series of fortified passes connection, is set up series of fortified passes connection with terminal equipment.
More preferably, this system comprises the first Radio Access Controller and the second Radio Access Controller, and each Radio Access Controller is managed at least one access point.The first Radio Access Controller comprises authentication information distribution module, for first when accessing WLAN, the authentication information of the terminal equipment of acquisition being distributed to other Radio Access Controller in pre-configured roaming territory by the first access point under the first Radio Access Controller management at terminal equipment.The second access point under the second Radio Access Controller management is for sending the authentication from terminal equipment receiving and reassociation requests to second Radio Access Controller.The second Radio Access Controller comprises: whether authentication checks module, in the time receiving the authentication of terminal equipment that the second access point transmits and reassociation requests, authenticate according to the authentication information sense terminals equipment of the terminal equipment of storage; Series of fortified passes connection indicating module, when terminal equipment detected by the first access point authentication in authentication checks module, sends the second access point and terminal equipment and sets up indication that series of fortified passes joins to the second access point.The second access point is set up series of fortified passes and is joined for set up the indication of series of fortified passes connection and terminal equipment according to the second access point and terminal equipment.
Preferably, bridge neighbor switches in compartment arranges.
Preferably, the quantity of multiple access points is equal to or greater than the number of carriages that the vehicles have.
Preferably, compartment bridge is provided with the first directional antenna, and multiple cars over the ground bridge are provided with the second directional antenna.
Preferably, the second directional antenna is oriented relative with the direction of the first directional antenna, and the antenna that accesses signal strength signal intensity maximum in the first directional antenna and the second directional antenna carries out radio communication.
Preferably, the first directional antenna comprises: the first laminate and the second laminate that is provided with at least one bridge antenna oscillator that are provided with the feed of at least one emitting electromagnetic wave; On the first laminate, be formed with respectively corresponding to the position of each described feed the gap of passing for electromagnetic wave; Wherein, the first laminate is fixedly connected with at each interval with the second laminate.
Preferably, electromagnetic tranmitting frequency is 1.8GHz～12GHz.
Preferably, wave frequency is 4.9GHz～6GHz, more preferably 5GHz～5.9GHz.
Preferably, wave frequency is 2GHz～2.6GHz, more preferably 2.4GHz～2.5GHz.
Preferably, the second directional antenna comprises: reflector and be located at least one antenna unit array of the reflecting surface side of reflector, antenna unit array comprises that multiple first antenna elements with the first working frequency range and at least one have the second antenna element of the second working frequency range, multiple the first antenna elements surround one week, and the second antenna element is positioned among one week the first antenna element.The first antenna element and the second antenna element form by the main element and the director that are vertically fixed on the medium substrate in same reflection face side and be formed on medium substrate; The first antenna element has three, and the middle vertical plane vertical with reflecting surface that the medium substrate of three the first antenna elements has separately intersects at a line, and between every adjacent two middle vertical planes, angle is 120 °; The medium substrate of the second antenna element is perpendicular to the medium substrate of one of them the first antenna element.
Preferably, the antenna of the be greater than-85dB that accesses signal strength signal intensity in the first directional antenna and the second directional antenna carries out radio communication.
Preferably, compartment bridge is arranged on the front portion in compartment.
Preferably, second communication module connects with the switch that is arranged at the corresponding platform of vehicles place, and switch is connected with control centre.
Preferably, multiple cars over the ground bridge be arranged on the right side of vehicles direction of advance along working line.
Preferably, be provided with sidewall on working line, multiple cars over the ground bridge are arranged on sidewall.
Preferably, be provided with multiple supporters on working line, multiple cars over the ground bridge are arranged on multiple supporters correspondingly with predetermined space.
Preferably, be provided with roof on working line, multiple cars over the ground bridge are arranged on roof.
Preferably, predetermined space is 0.5 meter to 1000 meters.
Preferably, predetermined space is 100 meters to 800 meters.
Preferably, predetermined space is 200 meters to 400 meters.
Preferably, the vehicles are subway, light rail, seabed tunnel train, air traffic instrument, the sea-freight vehicles, high ferro or bus.
Preferably, communication system is used WLAN (wireless local area network), 3G network, 4G network or microwave communication network.
In system of the present invention, by adopting directional antenna or the omnidirectional antenna of above-mentioned different structure configuration, the omnidirectional that can realize wireless network in this system covers, and has improved largely wireless transmission speed, and has reduced the rate of substitute and the error rate of signal transmission.Further, in system of the present invention, adopt the processing mode of roaming at a high speed, can make terminal equipment in the situation that of high-speed mobile, realize equally good traffic operation.
In addition, in technical scheme of the present invention, the bridge that is arranged on the bridge in the vehicles and arranges along working line by use, can increase the throughput of the communication system of the traffic system of the working line that people's current density is larger, increase the bandwidth of this communication system, and can provide online demand at a high speed as user to be greater than everyone speed of 1Mbps, thereby make the user of this communication system can enjoy high-quality, high-speed online is experienced.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is according to the block diagram of the system of the terminal equipment in the vehicles of the embodiment of the present invention and external network communication;
Fig. 2 to Figure 16 is arranged on the diagram of the directional antenna in compartment bridge;
Figure 17 to Figure 20 is arranged on the car diagram of the directional antenna in bridge over the ground; And
Figure 21 and Figure 22 are the schematic diagrames of the seamless roam between the access point illustrating in system of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skills obtain, belongs to the scope of protection of the invention.
Describe embodiments of the invention in detail referring to accompanying drawing.
With reference to Fig. 1, the terminal equipment in the vehicles of the present invention and the system of external network communication comprise: first communication module, be arranged on the vehicles, and first communication module comprises compartment bridge; And second communication module, comprise multiple cars bridge over the ground, multiple cars over the ground bridge are provided at predetermined intervals on the working line of the vehicles, wherein, between first communication module and second communication module, utilize communication network to communicate and communicate by second communication module and external network.
With reference to Fig. 1, also comprise switch at first communication module, switch is connected with compartment bridging communication, and is provided for multiple access points of network service for terminal equipment.
Preferably, bridge neighbor switches in compartment arranges.In addition, on the vehicles, the quantity of access point is equal to or greater than the number of carriages that the vehicles have.In other words, suppose that vehicles have 6 joint compartments, the joint of each on these vehicles compartment arranges one or more access point.
In addition, compartment bridge is provided with the first directional antenna, and car over the ground bridge is provided with the second directional antenna.The second directional antenna is oriented relative with the direction of the first directional antenna, and the antenna that accesses signal strength signal intensity maximum in the first directional antenna and the second directional antenna carries out radio communication.
Fig. 2 to Fig. 6 is arranged on the diagram of the first directional antenna in compartment bridge.
With reference to Fig. 2 to Fig. 6, this directional antenna has the first laminate 1 and the second laminate 2, the first laminates 1 are fixedly connected with at each interval with the second laminate 2.Wherein, the first laminate 1 is provided with the feed 3 of at least one emitting electromagnetic wave; The second laminate 2 is provided with at least one antenna oscillator 4.Further, on the first laminate 1, corresponding to the position of each feed 3, be respectively equipped with the gap 5 of passing for electromagnetic wave.Preferably, this electromagnetic tranmitting frequency can be 1.8GHz～12GHz; More preferably, this electromagnetic tranmitting frequency can be 5.1GHz～5.9GHz, or 2.4GHz～2.5GHz; Further, this electromagnetic tranmitting frequency can be 5.8GHz.Should be appreciated that this structure makes antenna oscillator 4 be coupled correspondingly by the above-mentioned electromagnetic wave and the feed 3 that pass from gap 5.
In this antenna, because it has the first laminate 1 and the second laminate 2, owing to being provided with the feed 3 of at least one emitting electromagnetic wave on the first laminate 1, be formed with the gap 5 of passing for this electromagnetic wave in the first laminate 1 position corresponding with each feed 3, and on the second laminate 2, be provided with and the electromagnetic wave antenna oscillator 4 of corresponding coupling one by one that passes gap 5, therefore, the mode of this corresponding layout one by one and corresponding coupling one by one can realize the covering performance of optimizing antenna.
The first laminate 1 has towards the first surface 6 of the second laminate 2 and second 7 of the second laminate 2 dorsad, wherein, is provided with to provide the first merit parallel circuit 8 and the second merit parallel circuit 9 of feed 3 on second 7.Preferably, take the longitudinal axis of second 7 as datum axis L, the first merit parallel circuit 8 and the second merit parallel circuit 9 become mirror-image arrangement with respect to the both sides take this datum axis L as symmetry axis.Further, the first merit parallel circuit 8 and the second merit parallel circuit 9 have respectively: signal input port 10 and at least one signal feed 11, electrical connection between signal feed 11 and signal input port 10.In addition, antenna oscillator 4 can be formed on the face of the first laminate 1 dorsad of the second laminate 2.As an optional embodiment, the first laminate 1 and the second laminate 2 can be printed circuit board (PCB).
Preferably in embodiment, between the signal feed 11 of the first merit parallel circuit 8 and the signal feed 11 of the second merit parallel circuit 9, be each other mirror image at one.Wherein, two of mirror image signal feed 11 form a feed 3 each other.Feed 3 is for being connected to realize signal I/O with coaxial feeder.Preferably, in the first embodiment of the present invention, the number of feed 3 is four.But any amount of feed 3 is all fine, for example, can be as shown in the second embodiment of the present invention, the quantity of feed 3 is two.But the present invention is not limited thereto.
Because all signal feed and the datum axis of the first merit parallel circuit form positive 30 degree～60 degree angles, all signal feed of the second merit parallel circuit and datum axis form negative 30 degree～60 degree angles, this arrangement can further be optimized the covering performance of antenna, makes its covering performance optimum.
Further, in a preferred embodiment, the first laminate 1 and the second laminate 2 are flat board, and parallel to each other, now, can improve the coupling performance between antenna oscillator 4 and merit parallel circuit.
In addition, the wavelength that is spaced apart 0.4～1 electromagnetic wave (frequency can be any in said frequencies) between each feed 3.Preferably, between each feed 3, be spaced apart 0.6～0.9 electromagnetic wavelength.
Particularly, on the first surface 6 of the first laminate 1, be provided with the conductive layer that covers whole first surface 6, the hollow out pore-forming respectively of the position corresponding with each signal feed 11 on conductive layer, each hole forms a gap 5.Preferably, the quantity in gap 5 equates with the quantity of all signal feed 11.In the present invention, electromagnetic wave only can pass and penetrate with feed coupling from gap 5, and the electromagnetic wave propagating on conductive layer will be reflected by conductive layer, so can realize the orientation to Electromagnetic Wave Propagation direction.
In addition, the angle between the length direction of the projection of gap 5 on first surface 6 and corresponding signal feed 11 is greater than 0 ° and be less than 180 °, and the angle between the length direction in gap and corresponding signal feed is greater than 0 ° and be less than 180 °.In a preferred embodiment, this angle can be 5 degree～135 degree, and more preferably, this angle can be 90 degree.In the time that angle is 90 °, that is, the projection of gap 5 on first surface 6, perpendicular to corresponding signal feed 11, therefore, in the time that the two is arranged in such a way, can make the coupling performance between feed 3 and antenna oscillator 4 improve.
The length direction that should be appreciated that gap 5 described herein is the direction on the long limit of rectangular slot 45 as shown in the figure, and in the time that gap 5 is square, its length direction, is to be the identical direction of rectangle duration limit bearing of trend with gap 5.
Should be appreciated that, the angle between the length direction of the projection of gap 5 on first surface 6 and corresponding signal feed 11 is as long as between 0 °-180 °, and 90 ° orthogonal be most preferred mode, the present invention is not limited thereto.
Preferably, gap 5 can be formed by etching conductive layer, and etching mode can be electrolytic etching, chemical etching etc.
In one embodiment, antenna oscillator 4 is the conducting strip forming with etching mode, and alternatively, this conducting strip can be the polygon facet forming with etching mode.Preferably, antenna oscillator 4 can be conducting strip, and the projection of wherein diagonal of conducting strip on the first laminate 1 is parallel with the datum axis L of the first laminate 1.In other words, wherein the projection on the first laminate 1 of limit and the angle of datum axis L are 45 ° to conducting strip.The shape that should be appreciated that antenna oscillator 4 can be the various shapes such as rhombus, rectangle, regular pentagon.
Further, in the time that antenna oscillator 4 is conducting strip, its length of side is: form 1/4th to 3/4ths of the electromagnetic wavelength being coupled with antenna oscillator 4.Preferably, the length of side can be to form 1/2nd of the electromagnetic wavelength being coupled with antenna oscillator 4.
In addition, preferably, the material of above-mentioned conductive layer and conducting strip is metal or alloy or electrically conductive ink.Metal material can be copper, silver etc.
Between the first laminate 1 and the second laminate 2, be fixedly connected with by insulating part.In addition, the distance between the first laminate 1 and the second laminate 2 is between 0.1mm-10mm, and preferably, distance is 1mm～3mm, and the most preferably, this distance can be 2.6mm.Because this apart from time, the coupling performance optimum between antenna oscillator 4 and feed 3.
Also be pointed out that, antenna of the present invention is the antenna for the traffic system of fixed line.This class traffic system can be: any one in subway transportation system, Light Rail Transit, seabed tunnel traffic system, bus traffic system.In addition, on the first laminate 1, be also provided with fixing hole 12, antenna can be fixed in above-mentioned traffic system by the insulation securing member through this fixing hole 12.Because antenna of the present invention can be platy structure, so it is more suitable for applying in the environment jolting, more steadily firmly be applicable to being applied in the traffic system of fixed line than prior art plate antenna is fixing, this can realize and in above-mentioned traffic system, do WIFI wireless coverage.
Ac signal is inputted from the signal input port 10 being arranged on second 7, then transfer to feed 3 places, due to the position corresponding to each feed 3 on the first laminate 1, form respectively the gap 5 of passing for electromagnetic wave, so electromagnetic wave directionally penetrates from gap 5, then pass the electromagnetic wave in gap 5 and be delivered to antenna oscillator 4, antenna oscillator 4 and feed 3 are coupled correspondingly.Further, electromagnetic wave is launched from antenna oscillator 4, thereby electromagnetic wave is carried out to direction propagation.
Fig. 7 to Figure 11 is the schematic diagram that the another embodiment that can be used for above-mentioned directional antenna is shown, wherein, represents with identical reference number with the like of the antenna of Fig. 2 to Fig. 6, and omits the description to these likes.The quantity of the feed 3 of this embodiment is two, and further, the quantity in bridge antenna oscillator 4 and gap 5 is also two.All the other parts of not describing are all same as the previously described embodiments.
Figure 12 to Figure 16 is the schematic diagram that the another embodiment of directional antenna is shown, wherein, represents, and omit the description to these likes here with the like of the antenna of Fig. 2 to Fig. 6 with identical reference number.
With reference to Figure 12-16, this bridge antenna has the first laminate 1 and the second laminate 2, the first laminate 1 is fixedly connected with at each interval with the second laminate 2, but the feed 3 that the first laminate 1 is formed with at least one emitting electromagnetic wave (preferably, the frequency of feed 3 emitting electromagnetic waves is arbitrary frequency within the scope of 5～5.9GHz), and corresponding to the position of each feed 3, be formed with respectively the gap 5 of passing for electromagnetic wave on the first laminate 1.
Owing to being formed with the feed 3 of at least one emitting electromagnetic wave on the first laminate 1, be formed with the gap 5 of passing for electromagnetic wave in the first laminate 1 position corresponding with each feed 3, and on the first laminate 1, be formed with and the electromagnetic wave bridge antenna oscillator 4 of corresponding coupling one by one that passes each gap 5, therefore, the mode of this corresponding layout one by one and corresponding coupling one by one can realize the covering performance of optimizing bridge antenna.
Preferably, between each feed 3, be spaced apart 0.4-1 electromagnetic wavelength.Preferably, between each feed 3, be spaced apart 0.8 electromagnetic wavelength.
In the present invention, due on the position corresponding with all first signal feeder lines 11 of conductive layer, be formed with respectively the hole that first surface 6 is exposed from a side that is provided with conductive layer of the first laminate 1, further hole forms described gap 5, therefore, frequency is that the electromagnetic wave of 5～5.9GHz only can penetrate from gap 5, and cannot penetrate from conductive layer, so can realize the orientation to Electromagnetic Wave Propagation direction.
Further, in the time that bridge antenna oscillator 4 is conductive layer, its length of side is: form 1/4th to 3/4ths of the electromagnetic wavelength being coupled with bridge antenna oscillator 4.In a preferred embodiment, the length of side is 0.5 times of electromagnetic wavelength that forms coupling with bridge antenna oscillator 4.
In addition the conductive layer that, covers the metal forming of whole described first surface 6 and form described bridge antenna oscillator 4 is Alloy Foil.Preferably, Alloy Foil is Copper Foil or silver foil.
In addition, the distance between the first laminate 1 and the second laminate 2 is between 0mm-10mm.
Ac signal is inputted from the signal input port 10 being arranged on second 7, then transfer to feed 3 places, due to the position corresponding to each feed 3 on the first laminate 1, form respectively the gap 5 of passing for electromagnetic wave, so electromagnetic wave directionally penetrates from gap 5, then be delivered to bridge antenna oscillator 4 through the electromagnetic wave in gap 5, bridge antenna oscillator 4 and feed 3 are coupled correspondingly.Further, electromagnetic wave is launched from bridge antenna oscillator 4, thereby leads and radiated electromagnetic wave.
Compartment bridge can be arranged on any part in compartment, but is preferably arranged on the front portion in compartment.
In addition, second communication module 14 is connected to the switch at the platform place that is arranged at the vehicles by for example optical fiber or networking cable, switch is for example connected to control centre by optical fiber or networking cable, thereby realizes communicating by letter of terminal equipment in compartment and external network.Certainly, other connected modes are also fine.
Next, second communication module 14 is described in detail.
Preferably, multiple cars over the ground bridge be arranged on the right side of vehicles direction of advance along working line.
In addition, can car bridge over the ground be differently set according to the difference of the type of the vehicles.
For example,, if when traffic system is subway, seabed tunnel system etc., multiple cars bridge over the ground can be set on the sidewall in tunnel or roof.If when traffic system is the bus system of light rail, working line, can be provided with multiple posts, bar etc. along working line, then multiple cars bridge is over the ground set on these posts or bar.
In addition, determine the car interval between bridge over the ground according to network throughput.This interval can be set to various values, and such as 100 meters, 200 meters, 300 meters, 400 meters, 500 meters etc., preferably predetermined space is 100 meters to 800 meters, more preferably 200 meters to 400 meters.
Describe in detail and be arranged on car the second directional antenna in bridge over the ground referring to Figure 17 to Figure 20.
With reference to Figure 17 to Figure 20, this directional antenna comprises: reflector 24 and at least one antenna unit array (in the present embodiment, being an antenna unit array).All antenna unit arrays are all arranged on the reflecting surface side of reflector 24.If two opposing faces of reflector are reflecting surface, take antenna unit array as minimum unit, it can be arranged on the either side of both sides reflecting surface.
In Figure 17, can find out, antenna unit array comprises that multiple first antenna elements 22 with the first working frequency range and at least one have the second antenna element 26 of the second working frequency range, described multiple the first antenna element 22 surrounds one week, and described the second antenna element 26 is positioned among described one week the first antenna element 22.In the present embodiment, each antenna unit array is made up of three the first antenna element 22 and second antenna elements 26 with the second working frequency range with the first working frequency range.Wherein, the second working frequency range is less than the first working frequency range.For example the first working frequency range is 5.0-5.9GHz, and the second working frequency range is 2.4-2.5GHz.1.8-3GHz。Further preferably, the first working frequency range can be 5GHz, and now in fact the first antenna element 22 can be the bridge antenna of 5GHz, and the second working frequency range is 2.4GHz, and now in fact the second antenna element 26 can be the bridge antenna of 2.4GHz.The first working frequency range is 5.8GHz, and the second working frequency range is 2.4GHz.The first working frequency range and the second working frequency range are the different frequency range each other that is selected from 1.8～12G.
In conjunction with Figure 17 and Figure 18, can find out, each the first antenna element 22 is made up of the main element 222 and the director 229 (shown in Figure 19) that are vertically fixed on the medium substrate 221 in the reflecting surface side of reflector 24 and be formed on medium substrate 221.Similarly, the second antenna element 26 is made up of main element 262 and 2 directors 69 (shown in Figure 10) that are vertically fixed on the medium substrate 261 in the reflecting surface side of reflector 24 and be formed on medium substrate 261.
Further, medium substrate 221 position each other of these three the first antenna elements is shown in Figure 18: these three medium substrates 221 have a middle vertical plane vertical with reflecting surface separately, three of three medium substrates 221 middle vertical planes intersect at a line, now, described in every adjacent two, the angle between middle vertical plane is 120 °; The medium substrate 261 of the second antenna element 26 is arranged to: perpendicular to one of medium substrate 221 of this three the first antenna elements.
As a kind of optimal way, can also be as shown in figure 18, by another two medium substrates (except that medium substrate vertical with the medium substrate 261 of the second antenna element 26) in the medium substrate 221 of these three the first antenna elements 22, with respect to medium substrate 261 mirror-image arrangement of the second antenna element 26.
Continue referring to Figure 18, as mentioned above 120 ° of spaced apart these three medium substrates 221 and be isolated each other perpendicular to the medium substrate 261 of one of them medium substrate 221 each other.For example, continue referring to Figure 18, the medium substrate 221 of these three the first antenna elements 22 and the projection of the medium substrate 261 of the second antenna element 26 on the reflecting surface of reflector 24 are spaced apart from each other.
Further, for the angle from regular triangular prism, describe the most preferably mode of antenna unit array in antenna of the present invention, first define as follows., the first antenna element 22 has with the each medium substrate of the second antenna element 26: in order to arrange the lateral surface of main element and director, the medial surface contrary with this lateral surface, with all parallel and equidistant mid-planes of this lateral surface and medial surface.Medial surface, lateral surface based on above-mentioned and be clipped in the definition of the mid-plane between interior lateral surface, continue referring to Figure 19, antenna unit array that can antenna of the present invention is set to: the two opposite sides elongated surfaces of the mid-plane separately of the medium substrate 221 of described three the first antenna elements intersects and forms regular triangular prism, and the mid-plane of the medium substrate 261 of the second antenna element is positioned on an equidistant point of this regular triangular prism.
Continue referring to Figure 19, when the medium substrate 221 of three the first antenna elements and the medium substrate 261 of the second antenna element are spaced apart from each other, the medium substrate 221 of three the first antenna elements is when the air line distance between the central point of every two medial surfaces is in the scope of 30-40mm in medial surface separately, and antenna of the present invention has good isolation.
Referring to Figure 19 and Figure 20, main element 222,262 and directors 229,269 all in the present invention are wire, but not the metal tube of the Yagi antenna of prior art.These plain conductors can be in copper conductor, aluminum conductor or silver-colored wire etc. any.Further, main element 222,262 and director 229,269 can be conductor materials.
Particularly, referring to first antenna element 22 shown in Figure 19, reflector 24 and director 229 lay respectively at the two opposite sides of main element 222 along the exterior normal direction of reflecting surface.Position relationship between main element 222 and director 229 is set to: the exterior normal direction along the reflecting surface perpendicular to reflector 24 is arranged successively away from the reflecting surface of reflector 24.Each main element 222 is made up of the first wire 223 and the second wire 225 spaced apart and on same straight line, and the director 229 of the first antenna element 22 is made up of at least one yi word pattern wire 227.In fact, for first antenna element, yi word pattern wire 227 can have 2-16 bar, and wherein 5 is preferred.Every yi word pattern wire 227 is all parallel to the first wire 223 and the second wire 225 in same antenna unit, and is all arranged in the same side of this same antenna unit main element 222.
Particularly, referring to the second antenna element 26 shown in Figure 10, the position relationship between main element 262 and director 269 is set to: along arranging successively away from the reflecting surface of reflector 24.Each main element 262 is made up of the first wire 262 and the second wire 265 spaced apart and on same straight line, and the director 269 of the second antenna element 26 is made up of at least one yi word pattern wire 267.In fact, for second antenna element, yi word pattern wire 267 can have 2-16 bar, and wherein, in the time that in the first antenna element 22, yi word pattern wire is 5, in the second antenna element, yi word pattern wire is preferably 3.Every yi word pattern wire 267 is all parallel to the first wire 263 and the second wire 265 in same antenna unit, and is all arranged in the same side of this same antenna unit main element 262.
Can find out from Figure 19 and Figure 20, in same antenna unit, all yi word pattern wires are along the direction perpendicular to the first wire and the second wire in this same antenna unit, away from the first wire and the second wire and successively compartment of terrain arrange.
As a kind of optimal way, for corresponding with " working frequency range of the first antenna element is greater than the operating frequency of the second antenna element ", the quantity of the yi word pattern wire 227 of the formation director 229 in the first antenna element 22 can be greater than the quantity of the yi word pattern wire 267 of the formation director 269 in the second antenna element 26.
In a kind of optimal way, as shown in figure 19, the material of every yi word pattern wire 227 in the first antenna element 22, length, width, thickness are all identical; And the total length of main element 222 in the first antenna element 22, is greater than the length of every yi word pattern wire 227 in the first antenna element 22.As shown in Figure 20, the material of every yi word pattern wire 267 in the second antenna element 26, length, width, thickness are all identical, the total length of main element 262 in the second antenna element 26, is greater than the length of every described yi word pattern wire 267 in the second antenna element 26.
From Figure 19, it can also be seen that, in the first antenna element 22, the perpendicular bisector perpendicular to its length direction of every yi word pattern wire 227 is all on same straight line, and this perpendicular bisector is all through the center of the total length of main element in the first antenna element 22.Equally also can find out from Figure 10, the perpendicular bisector perpendicular to its length direction of every yi word pattern wire 267 in the second antenna element 26, all on same straight line, and this perpendicular bisector is also all through the center of the total length of main element 262 in the second antenna element 26.
In conjunction with Figure 17-Figure 20, the medium substrate 221 of these three the first antenna elements 22 and the medium substrate 261 of the second antenna element 26 can be perpendicular to the reflectings surface of reflector 24.For example, medium substrate 221 and medium substrate 261 are rectangle, and its length direction is perpendicular to the reflecting surface of reflector 24.
In addition, the medium substrate 261 in medium substrate 221 and the second antenna element in the first antenna element is printed circuit board (PCB).For example, medium substrate 221 and 261 can be made up of FR4 material, or the baseplate material that other existing antennas adopt is made.As for form corresponding director and main element on respective media substrate 221,261, can adopt the several different methods of prior art.For example, for plating conductor layer on the surface at medium substrate 221,261, then optionally this conductor layer of etching to obtain corresponding yi word pattern wire and the first wire and the second wire.
As for the reflector 24 of antenna of the present invention.As illustrated at Figure 18, this reflector 24 can be reflecting plate, and the reflecting surface of reflecting plate is conductor reflecting surface, and the material of reflecting surface is conductor.Conductor reflecting surface is any in copper reflecting surface, aluminium reflecting surface, alloy reflecting surface or silver-colored reflecting surface etc.Obviously be appreciated that all antenna unit arrays in antenna share a described conductor reflecting surface.For example, for an antenna unit array, the medium substrate that forms each antenna element of this antenna unit array is all fixed in the reflecting surface side of same reflector.In Fig. 8, also illustrate, the reflecting plate of antenna is preferably circular reflecting plate, and shape can be also other shapes outside circle certainly, such as polygon etc.
Wherein, the first antenna element can be independent of the second antenna element and work alone, and can only have single the first antenna element to work alone, for example, in antenna shown in Figure 17, can only have first antenna element to work at 2.4GHZ, other antenna elements are not worked; Similarly, the second antenna element also can be independent of all the first antenna elements and work alone, for example, in the antenna referring to described in Figure 17, can only have the second antenna element to work under 5.8GHZ, and other antenna elements are not worked.
In the present invention, antenna unit array number is not limited to above-mentioned one, can be any amount, and except the number difference of antenna unit array, all the other are all identical with the aforesaid situation with an antenna unit array of the present invention.For plural antenna unit array, between every two antenna unit arrays, position relationship can be determined on a case-by-case basis, and there is no specific (special) requirements.In addition preferably, all antenna unit arrays all can be arranged in the same reflection face side of reflector.
Preferably, the antenna of the be greater than-85dB that accesses signal strength signal intensity in above-mentioned the first antenna and multiple the second antenna carries out radio communication.
In addition, at terminal equipment, in this traffic system in the situation that, in the time that terminal equipment moves to another access point from an access point, system need to realize by seamless roam processing the seamless roam of terminal equipment.Here said seamless roam comprises the fast roaming between the access point AP under same Radio Access Controller AC and under different AC.
Referring to Figure 21 and Figure 22, the roaming between the access point under both of these case is elaborated.
Figure 21 is the structural representation of the wireless local area network (WLAN) system of system of the present invention.In this system, can comprise Radio Access Controller 40, multiple access points, multiple access points comprise the first access point 52 and the second access point 54.
The second access point 54, for sending to Radio Access Controller by the authentication of the terminal equipment receiving and reassociation requests.
Radio Access Controller 40, comprising: authentication checks module 401, and in the time receiving the authentication of terminal equipment that the second access point transmits and reassociation requests, whether sense terminals equipment authenticates; Series of fortified passes connection indicating module 403, when terminal equipment detected by the first access point authentication in authentication checks module 401, sends the second access point and terminal equipment and sets up indication that series of fortified passes joins to the second access point.
The second access point 54, also, in the time receiving the second access point with mobile indication of setting up series of fortified passes connection, sets up series of fortified passes connection with terminal equipment.
In optional embodiment, the second access point 54 in the time that the signal that the second access point detected is better than the signal of the first access point, receives authentication and reassociation requests that the second access point sends at terminal equipment.
In optional embodiment, Radio Access Controller 40 also comprises: the associated indicating module 405 of removing, for sending at series of fortified passes connection indicating module 403 before the second access point 54 sets up the indication of series of fortified passes connection with terminal equipment, the indication that sends the first access point 52 and terminal equipment disassociation to the first access point 52 so that the first access point 52 and terminal equipment disassociation.
In optional embodiment, the interval that the first access point 52 and terminal equipment disassociation and the second access point 54 and terminal equipment are set up between the connection of series of fortified passes is no more than 100 milliseconds.In a preferred embodiment, the interval that the second access point and terminal equipment are set up between the connection of series of fortified passes is no more than 50 milliseconds.
In optional embodiment, Radio Access Controller 40 also comprises the associated indicating module 405 of removing, for receiving after the indication being heavily successfully associated with terminal equipment that send of the second access point 54, send the indication of the first access point and terminal equipment disassociation to the first access point 52, so that the first access point and terminal equipment disassociation.
Although above-mentioned two associated releasings same labelled notation for indicating module 407, being construed as them is the association releasing indicating modules of realizing difference in functionality under different embodiment.
In an optional embodiment, Radio Access Controller 40 can also comprise authentication message distribution module 407, for in sending the second access point and terminal equipment at series of fortified passes connection indicating module 43 and setting up the indication that series of fortified passes joins, the authentication information of the terminal equipment of storage is sent to the second access point 54.The second access point 54, also joins and communicates for utilizing authentication information and terminal equipment to set up series of fortified passes.
In another optional embodiment, Radio Access Controller 40 also comprises authentication message distribution module 407, for first when accessing WLAN, the authentication information of the terminal equipment obtaining in verification process being broadcast to all access points under Radio Access Controller centralized management by the first access point at terminal equipment.The second access point 54, also, in the time receiving the second access point and terminal equipment and set up the indication of series of fortified passes connection, utilizes the authentication information of storage it on and terminal equipment foundation heavily to manage and join and communicate.
Although above-mentioned two same labelled notations for authentication message distribution module 407, being construed as them is the authentication message distribution modules of realizing difference in functionality under different embodiment.
In optional embodiment, in authentication and reassociation requests, carry pairwise master key mark PMKID; The authentication information of terminal equipment comprises the paired main decryption key PMK that terminal equipment negotiates with the first access point and corresponding pairwise master key identifies PMKID with PMK.
Figure 22 is the structural representation of the wireless local area network (WLAN) system of system of the present invention.This wireless local area network (WLAN) system comprises multiple Radio Access Controller, and multiple Radio Access Controller comprise the first Radio Access Controller 62 and the second Radio Access Controller 64, and each Radio Access Controller is managed at least one access point.
The first Radio Access Controller 62 comprises authentication information distribution module 621, for first when accessing WLAN, the authentication information of the terminal equipment of acquisition being distributed to other Radio Access Controller in pre-configured roaming territory by the first access point 82 under the first Radio Access Controller 62 management at terminal equipment;
The second access point 84 under the second Radio Access Controller 64 management, for sending the authentication from terminal equipment receiving and reassociation requests to second Radio Access Controller 64.
Whether the second Radio Access Controller 64 comprises authentication checks module 641, in the time receiving the authentication of the terminal equipment that the second access point 84 transmits and reassociation requests, authenticate according to the authentication information sense terminals equipment of the terminal equipment of storage; Series of fortified passes connection indicating module 643, when detecting that in authentication checks module 641 terminal equipment has authenticated by the first access point 82, sends indication that the second access point 84 and terminal equipment set up series of fortified passes connection to the second access point 84.The second access point 84 is set up series of fortified passes with terminal equipment and is joined for set up the indication of series of fortified passes connection according to the second access point and terminal equipment.In embodiments of the present invention, the authentication information of the terminal equipment of storage refers to that multiple terminal equipments are linked into by authentication in the process of AC, and AC can get authentication information the storage of these terminal equipments.
Although only described the first Radio Access Controller 62 in above-described embodiment and the second Radio Access Controller 64 has different modules, but those skilled in the art can understand, the structure of the Radio Access Controller in wireless local area network (WLAN) system is the same.The first Radio Access Controller also comprises authentication checks module and series of fortified passes connection indicating module.The second Radio Access Controller also comprises authentication information distribution module.
In optional embodiment, the second Radio Access Controller 64, also, in the time receiving the data message of terminal equipment or control information, data message or control information that terminal equipment is sent send the first Radio Access Controller 62 to; And, receive data message or the control information of issuing terminal equipment from the first Radio Access Controller 62.In embodiments of the present invention, data message can be for example content of multimedia, speech data and file data etc.; Control information can be for example authentication with reassociation requests, AC between the control signal of communicating by letter etc.
In optional embodiment, the second Radio Access Controller 64 also comprises the first associated indicating module 643 of removing, for sending before the second access point sets up the indication of series of fortified passes connection with terminal equipment, and the indication of transmission and the associated releasing of the first access point.The first Radio Access Controller 62 also comprises the second associated indicating module 623 of removing, for receiving from the second Radio Access Controller during with the indication associated releasing of the first access point, send the indication of the first access point and terminal equipment disassociation to the first access point, so that the first access point and terminal equipment disassociation.
In optional embodiment, the second Radio Access Controller 64 also comprises the first associated indicating module 643 of removing, for receiving after the indication being heavily successfully associated with terminal equipment that the second access point sends, send with the indication of the associated releasing of the first access point to the first wireless controller;
The first Radio Access Controller 62 also comprises the second associated indicating module 623 of removing, for the indication that sends the first access point and terminal equipment disassociation to the first access point, so that the first access point and terminal equipment disassociation.
Can realize the seamless roam of terminal equipment by the wireless local of embodiment of the present invention loaming method off the net and wireless local area network (WLAN) system, even and track vehicle in high speed traveling process, terminal equipment is also experienced the roaming less than terminal equipment.
In addition, the vehicles of traffic system of the present invention are in motion all the time only to one side (such as right side) receiving and transmitting signal.
Specifically, when vehicle trigger sensing unit, the vehicles are in response to the triggering result of sensing unit by being to communicate to its second side to its first side transition of communications, and wherein, the first side is with respect to the second side.
In one embodiment, sensing unit can be a sensing unit.
In another embodiment, sensing unit is two or more than two sensing units.In the time of two sensing units of vehicle trigger, the vehicles in response to the result of calculation that two or the predetermined computation of carrying out more than the triggering result of two sensing units are obtained will to its first side and transition of communications for to its second side with communicate.
In this traffic system, the angle between first direction and second direction is 0 degree to 180 degree, and more specifically, angle is 30 degree, 45 degree, 60 degree, 90 degree, 120 degree, 150 degree or 180 degree etc.Wherein, 0 degree is the first direction situation parallel with second direction, and 180 degree are situations that first direction and second direction are contrary.
In addition, sensor setting is in position, the starting station, intermediate station position and/or the position, terminus of the running route of the vehicles.
Note, the vehicles in the present invention are air traffic instrument, the sea-freight vehicles, the land face vehicles, such as subway, light rail, seabed tunnel train, aviation instrument, high ferro or bus etc.And the said communication network of the present invention uses WLAN (wireless local area network), 3G network, 4G network or microwave communication network.WLAN (wireless local area network) comprises and is not limited to wifi network, and the vehicles, such as subway, seabed train can pass through wifi network, also can meet by 3G, 4G network the online demand of terminal equipment.Aviation instrument includes but not limited to aircraft, can communicate by microwave communication network and airport or interim landing point.
In system of the present invention, by adopting directional antenna or the omnidirectional antenna of different structure configuration, the omnidirectional that can realize network in this system covers, and has improved largely wireless transmission speed, and has reduced the rate of substitute and the error rate of signal transmission.Further, in system of the present invention, adopt the processing mode of roaming at a high speed, can make terminal equipment in the situation that of high-speed mobile, realize equally good traffic operation.
In addition, in technical scheme of the present invention, the bridge that is arranged on the bridge in the vehicles and arranges along working line by use, can increase the throughput of the communication system of the traffic system of the working line that people's current density is larger, increase the bandwidth of this communication system, and can provide online demand at a high speed as user to be greater than everyone speed of 1Mbps, thereby make the user of this communication system can enjoy high-quality, high-speed online is experienced.
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (29)
1. a system for the terminal equipment in the vehicles and external network communication, is characterized in that, described system comprises:
First communication module, is arranged on the described vehicles, and described first communication module comprises compartment bridge; And
Second communication module, comprises multiple cars bridge over the ground, and described multiple cars over the ground bridge are provided at predetermined intervals on the working line of the described vehicles;
Wherein, between described first communication module and described second communication module, utilize communication network to communicate and communicate by second communication module and external network.
2. system according to claim 1, is characterized in that, described first communication module also comprises switch, and described switch is connected with described compartment bridging communication, and is at least one access point that described terminal equipment is provided for network service.
3. system according to claim 2, it is characterized in that, in the time that described terminal equipment moves to the second access point from the first access point, described system realizes the seamless roam of described terminal equipment from described the first access point to described the second access point by Radio Access Controller.
4. system according to claim 3, is characterized in that,
Described the second access point, for sending to Radio Access Controller by the authentication of the terminal equipment receiving and reassociation requests;
Described Radio Access Controller, comprising:
Whether authentication checks module, in the time receiving the authentication of terminal equipment that described the second access point transmits and reassociation requests, detect described terminal equipment and authenticate;
Series of fortified passes connection indicating module, when described terminal equipment detected by described the first access point authentication in described authentication checks module, sends described the second access point and described terminal equipment and sets up indication that series of fortified passes joins to described the second access point;
Described the second access point, also, in the time receiving described the second access point and described terminal equipment and set up the indication of series of fortified passes connection, sets up series of fortified passes connection with described terminal equipment.
5. system according to claim 3, is characterized in that, described system comprises the first Radio Access Controller and the second Radio Access Controller, and each Radio Access Controller is managed at least one access point, wherein:
Described the first Radio Access Controller comprises authentication information distribution module, for first when accessing WLAN, the authentication information of the described terminal equipment obtaining being distributed to other Radio Access Controller in pre-configured roaming territory by the first access point under described the first Radio Access Controller management at terminal equipment;
The second access point under described the second Radio Access Controller management, for sending the authentication from described terminal equipment receiving and reassociation requests to described the second Radio Access Controller;
Described the second Radio Access Controller comprises:
Whether authentication checks module, in the time receiving the authentication of terminal equipment that described the second access point transmits and reassociation requests, detect described terminal equipment according to the authentication information of the terminal equipment of storage and authenticate;
Series of fortified passes connection indicating module, when described terminal equipment detected by described the first access point authentication in described authentication checks module, sends described the second access point and described terminal equipment and sets up indication that series of fortified passes joins to described the second access point;
Described the second access point is set up series of fortified passes and is joined for set up the indication of series of fortified passes connection and described terminal equipment according to described the second access point and described terminal equipment.
6. system according to claim 2, is characterized in that, the contiguous described switch configuration of described compartment bridge.
7. system according to claim 2, is characterized in that, the quantity of described multiple access points is equal to or greater than the number of carriages that the described vehicles have.
8. system according to claim 1, is characterized in that, described compartment bridge is provided with the first directional antenna, and described multiple cars over the ground bridge are provided with the second directional antenna.
9. system according to claim 8, it is characterized in that, described the second directional antenna is oriented relative with the direction of described the first directional antenna, and the antenna that accesses signal strength signal intensity maximum in described the first directional antenna and described the second directional antenna carries out radio communication.
10. system according to claim 8 or claim 9, is characterized in that, described the first directional antenna comprises:
Be provided with at least one emitting electromagnetic wave feed the first laminate and be provided with the second laminate of at least one bridge antenna oscillator;
On described the first laminate, be formed with respectively corresponding to the position of each described feed the gap of passing for described electromagnetic wave; Wherein, described the first laminate is fixedly connected with at each interval with described the second laminate.
11. systems according to claim 10, is characterized in that, described electromagnetic frequency is 1.8GHz～12GHz.
12. systems according to claim 11, is characterized in that, described electromagnetic frequency is 4.9GHz～6GHz.
13. systems according to claim 12, is characterized in that, described electromagnetic frequency is 5GHz～5.9GHz.
14. systems according to claim 11, is characterized in that, described electromagnetic frequency is 2GHz～2.6GHz.
15. systems according to claim 14, is characterized in that, described electromagnetic frequency is 2.4GHz～2.5GHz.
16. systems according to claim 8 or claim 9, it is characterized in that, described the second directional antenna comprises: reflector and be located at least one antenna unit array of the reflecting surface side of described reflector, described antenna unit array comprises that multiple first antenna elements with the first working frequency range and at least one have the second antenna element of the second working frequency range, described multiple the first antenna element surrounds one week, and described the second antenna element is positioned among described one week the first antenna element.
17. systems according to claim 16, is characterized in that, described the first antenna element and the second antenna element form by the main element and the director that are vertically fixed on the medium substrate in same described reflecting surface side and be formed on described medium substrate;
Described the first antenna element has three, and the middle vertical plane vertical with described reflecting surface that the medium substrate of three the first antenna elements has separately intersects at a line, and between every adjacent two middle vertical planes, angle is 120 °; The medium substrate of described the second antenna element is perpendicular to the medium substrate of the first antenna element described in one of them.
18. systems according to claim 9, is characterized in that, the antenna of the be greater than-85dB that accesses signal strength signal intensity in described the first directional antenna and described the second directional antenna carries out radio communication.
19. systems according to claim 1, is characterized in that, described compartment bridge is arranged on the front portion in described compartment.
20. systems according to claim 1, is characterized in that, described second communication module connects with the switch that is arranged at the corresponding platform of described vehicles place, and described switch is connected with control centre.
21. systems according to claim 1, is characterized in that, described multiple cars over the ground bridge are arranged on the right side of described vehicles direction of advance along described working line.
22. systems according to claim 1, is characterized in that, on described working line, are provided with sidewall, and described multiple cars over the ground bridge are arranged on described sidewall.
23. systems according to claim 1, is characterized in that, are provided with multiple supporters on described working line, and described multiple cars over the ground bridge are arranged on described multiple supporter correspondingly with predetermined space.
24. systems according to claim 1, is characterized in that, on described working line, are provided with roof, and described multiple cars over the ground bridge are arranged on described roof.
25. systems according to claim 1, is characterized in that, described predetermined space is 0.5 meter to 1000 meters.
26. systems according to claim 25, is characterized in that, described predetermined space is 100 meters to 800 meters.
27. systems according to claim 26, is characterized in that, described predetermined space is 200 meters to 400 meters.
28. systems according to claim 1, is characterized in that, the described vehicles are subway, light rail, seabed tunnel train, air traffic instrument, the sea-freight vehicles, high ferro or bus.
29. systems according to claim 1, is characterized in that, described communication system is used WLAN (wireless local area network), 3G network, 4G network or microwave communication network.
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| CN103796253B (en) | 2015-04-15 |
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