CN203827347U - Distributed antenna communication system for high speed vehicle - Google Patents
Distributed antenna communication system for high speed vehicle Download PDFInfo
- Publication number
- CN203827347U CN203827347U CN201420197529.2U CN201420197529U CN203827347U CN 203827347 U CN203827347 U CN 203827347U CN 201420197529 U CN201420197529 U CN 201420197529U CN 203827347 U CN203827347 U CN 203827347U
- Authority
- CN
- China
- Prior art keywords
- signal
- antenna
- base station
- communications system
- distributed antenna
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Abstract
The utility model provides a distributed antenna communication system for a high speed vehicle. The system comprises a head antenna, a tail antenna, a relay controller and a base station access point. The head antenna transmits a first signal, and the tail antenna transmits a second signal. The relay controller selects one of the head antenna and the tail antenna to perform data transmission between the vehicle and a base station according to the intensity of the first signal and the second signal. According to the system provided by the utility model, the switching of base stations is completed by the cooperation of the two antennas, and the switching failure probability and switching interruption time are effectively reduced, so that the problem of signal interruption caused by base station switching when the high speed vehicle passes a base station overlap area is solved, and the stable data transmission in high speed vehicles is ensured. The distributed antenna communication system adopts a multi-system access platform, and is capable of supporting multiple wireless communication protocols, thereby being convenient for various users in the high speed vehicle to use.
Description
Technical field
The utility model belongs to wireless communication technology field, relates to a kind of communication system for high-speed carriering tool, particularly a kind of distributed antenna communications system for high-speed carriering tool.
Background technology
In recent years, China Railway High-speed network Development is rapid.End in June, 2012,9676 kilometers of high-speed railways put into operation, also have more railway to build.Current, the equipment that mobile phone, flat board, notebook etc. can be used for radio communication is widely used by the passenger on bullet train.Meanwhile, passenger is more and more stronger to the demand of high-quality voice and data communication services.
But, due to the Doppler effect that the high-speed mobile of train causes, vehicle window penetration loss, switch and gravity treatment community frequently, group switchings etc., and factor affects, and macro base station covering method routinely will produce a series of quality index problem.
In CN202121581U, the mobile communication system of using on a kind of bullet train has been proposed.But this system does not have autgmentability, only support specific communication protocol, the flat board for example only with Wi-Fi function just can not be used radio communication function in this system.Meanwhile, this system is used single antenna, can't resolve the communication disruption problem of direct-cut operation in LTE.
In CN203279089U, adopt dual-mode wireless communication system, solve the discontinuous problem of signal that receives.This system cooperatively interacts to carry out radio communication by ground and satellite communication system, and specific implementation is complicated, and communications cost is high.
Therefore, it is reliable and stable that those skilled in the art is devoted to develop a kind of transfer of data of wireless device that makes, the extensibility of support of wireless communication agreement (supporting various wireless communication agreement), and can solve the car antenna communication system of the communication disruption of LTE direct-cut operation.
Utility model content
Because above-mentioned defect of the prior art, technical problem to be solved in the utility model is to provide a kind of distributed antenna communications system, this system both can solve the signal interruption problem producing because of base station shifting when crossing over overlay region, base station, can make again on high-speed carriering tool the transfer of data of wireless device reliable and stable, simultaneously the extensibility of support of wireless communication agreement.
The utility model provides a kind of distributed antenna communications system, for high-speed carriering tool, comprise head antenna, trail antenna, window machine controller and base station access point, head antenna transmission first signal, trail antenna transmission secondary signal, first signal is high-speed carriering tool and signal identical or adjacent base station communication with secondary signal; Head antenna, trail antenna are all connected with window machine controller; Base station access point is connected with window machine controller; Window machine controller is according to the intensity of first signal and secondary signal, selected by a transfer of data of carrying out between high-speed carriering tool and base station in head antenna or trail antenna.
The distributed antenna communications system that the utility model provides, the integrated transmission-receiving function of two paths of signals, realized high-speed carriering tool to the transmitting-receiving of two paths of signals and switching, cooperation by two antennas completes base station and switches, can effectively reduce handoff failure probability and HO-break duration, solve the signal interruption problem that bullet train produces because of base station shifting when crossing over overlay region, base station, thereby guaranteed the stable transfer of data on high-speed carriering tool.
Further, the intensity of first signal is more than or equal to the intensity of secondary signal, and distributed antenna communications system carries out the transfer of data between bullet train and base station by head antenna; The intensity of first signal is less than the intensity of secondary signal, and distributed antenna communications system carries out the transfer of data between bullet train and base station by trail antenna.
The distributed antenna communications system that the utility model provides, according to the intensity of two paths of signals, selects signal strength signal intensity compared with great mono-tunnel, carries out the transfer of data between bullet train and base station, thereby guarantees the stable transfer of data.
Further, window machine controller comprises the first transceiver module, the second transceiver module, control module and memory module; The first transceiver module is for the treatment of first signal; The second transceiver module is for the treatment of secondary signal.
Further, control module comprises FPGA, and first signal and secondary signal are connected respectively to the input of FPGA, and the output signal of FPGA is for controlling a job of the first transceiver module and the second transceiver module.
The distributed antenna communications system that the utility model provides, adopt FPGA to carry out the comparison of first signal and secondary signal intensity, according to the first signal of FPGA output and the comparative result of secondary signal intensity, control the first transceiver module or the second transceiver module work of control, by first signal or secondary signal, carry out the transfer of data between high-speed carriering tool and base station.
Further, distributed antenna communications system also comprises multi-system access platform, and multi-system access platform is arranged between window machine controller and base station access point.
The distributed antenna communications system that the utility model provides, by multi-system access platform is set, makes distributed antenna communications system can support multiple home control network communication protocol, is convenient to the use of all types of user in high-speed carriering tool.
Further, multi-system access platform can be supported GSM, WCDMA, LTE or Wi-Fi.
Further, multi-system access platform comprises down going channel and data feedback channel.
Further, down going channel comprises descending input stage multisystem splitter, descending ICS interference cancellation module and descending power amplifier module; Data feedback channel comprises up input stage multisystem splitter, up ICS interference cancellation module and up power amplifier module.
Further, the input of the descending input stage multisystem splitter of multi-system access platform and the input of up input stage multisystem splitter are supported respectively China Mobile GSM signal transmitting and receiving machine, the TD of China Mobile signal transmitting and receiving machine, the GSM of CHINAUNICOM signal transmitting and receiving machine, the WCDMA of CHINAUNICOM signal transmitting and receiving, the LTE of China Mobile signal transmitting and receiving machine, the LTE of CHINAUNICOM signal transmitting and receiving machine and Wi-Fi signal transmitting and receiving machine.
Compared with prior art, the distributed antenna communications system that the utility model provides, has following beneficial effect:
(1) the integrated transmission-receiving function of two paths of signals, realized high-speed carriering tool to the transmitting-receiving of two paths of signals and switching, by two antenna cooperatives, completing base station switches, can effectively reduce handoff failure probability and HO-break duration, solve the signal interruption problem that high-speed carriering tool produces because of base station shifting when crossing over overlay region, base station, guaranteed the stable transfer of data on bullet train;
(2) adopt multi-system access platform, make distributed antenna communications system can support multiple home control network communication protocol, be convenient to the use of all types of user in high-speed carriering tool.
Below with reference to accompanying drawing, the technique effect of design of the present utility model, concrete structure and generation is described further, to understand fully the purpose of this utility model, feature and effect.
Accompanying drawing explanation
Fig. 1 is the structural representation of the distributed antenna communications system of an embodiment of the present utility model;
Fig. 2 is the structural representation of the window machine controller of the distributed antenna communications system shown in Fig. 1;
Fig. 3 is the structural representation of the distributed antenna communications system of another embodiment of the present utility model.
Embodiment
The following example is to further explanation of the present invention and supplements, the present invention is not constituted any limitation.
As shown in Figure 1, the distributed antenna communications system of the present embodiment, for bullet train, also can be applied to other high-speed carriering tool.
The distributed antenna communications system of the present embodiment, for delivery vehicle, comprise head antenna 100, trail antenna 200, window machine controller 300 and base station access point 500, head antenna 100 transmission first signals, trail antenna 200 transmission secondary signals, first signal is bullet train and signal identical or adjacent base station communication with secondary signal; Head antenna 100, trail antenna 200 are all connected with window machine controller 300; Base station access point 500 is connected with window machine controller 300; Window machine controller 300 is according to the intensity of first signal and secondary signal, selected by a transfer of data of carrying out between bullet train and base station in head antenna 100 or trail antenna 200.
The distributed antenna communications system of the present embodiment, the integrated transmission-receiving function of two paths of signals, realized bullet train to the transmitting-receiving of two paths of signals and switching, cooperation by two antennas completes base station and switches, can effectively reduce handoff failure probability and HO-break duration, solve the signal interruption problem that bullet train produces because of base station shifting when crossing over overlay region, base station, thereby guaranteed the stable transfer of data on bullet train.
Head antenna 100 and trail antenna 200, be for the terrestrial receiving antenna of high-speed motion design, has the features such as highly low, streamlined and low wind lotus, can keep receiving the stable of signal.
First signal and secondary signal are for being transmitted, existed the two paths of signals of different delay by different channels.
When the intensity of first signal is more than or equal to the intensity of secondary signal, the distributed antenna communications system of the present embodiment carries out the transfer of data between bullet train and base station by head antenna; When the intensity of first signal is less than the intensity of secondary signal, the distributed antenna communications system of the present embodiment carries out the transfer of data between bullet train and base station by trail antenna.
The distributed antenna communications system of the present embodiment, according to the intensity of two paths of signals, i.e. the received signal strength of head antenna 100 and trail antenna 200, selective reception signal strength signal intensity is compared with great mono-tunnel, carry out the transfer of data between bullet train and base station, thereby guarantee the stable transfer of data.
When approaching train current base station, the received signal strength of head antenna 100 is generally better than the received signal strength of trail antenna, at this moment, selects first signal to carry out communication; When train sails out of current base station, the received signal strength of trail antenna 200 is generally better than the received signal strength of head antenna, at this moment, selects secondary signal to carry out communication.
As shown in Figure 2, window machine controller 300 comprises the first transceiver module, the second transceiver module, control module and memory module; The first transceiver module is for the treatment of first signal; The second transceiver module is for the treatment of secondary signal; The output signal of FPGA is controlled a job in the first transceiver module and the second transceiver module.
Control module in window machine controller 300 comprises a FPGA, the input access two paths of signals of FPGA, and FPGA produces control signal according to two paths of signals, and this control signal can be used for controlling other module in window machine controller 300.
The distributed antenna communications system of the present embodiment, use FPGA-Xilinx Spartan3A-DSP, adopt comparison program of the prior art to carry out the comparison of first signal and secondary signal intensity, according to the first signal of FPGA output and the comparative result of secondary signal intensity, control the first transceiver module or the second transceiver module work of control, by first signal or secondary signal, carry out the transfer of data between bullet train and base station.
The first transceiver module comprises the first modem module and the first buffer unit, the first modem module is for the modulation /demodulation of first signal, and the first buffer unit needs the first modem module modulation and data through the first modem module demodulation for buffer memory; The first buffer unit is connected with control module, controlled module controls.
The second transceiver module comprises the second modem module and the second buffer unit, the second modem module is for the modulation /demodulation of secondary signal, and the second buffer unit needs the second modem module modulation and data through the second modem module demodulation for buffer memory; The second buffer unit is connected with control module, controlled module controls.
As shown in Figure 3, distributed antenna communications system also comprises multi-system access platform 400, and multi-system access platform 400 is arranged between window machine controller 300 and base station access point 500.
The distributed antenna communications system of the present embodiment, by multi-system access platform 400 is set, makes distributed antenna communications system can support multiple home control network communication protocol, is convenient to the use of all types of user in bullet train.
Multi-system access platform 400 can be supported the communications protocol such as GSM, WCDMA, LTE or Wi-Fi, and can further expand.
Multi-system access platform 400 comprises down going channel and data feedback channel.
Down going channel comprises descending input stage multisystem splitter, descending ICS interference cancellation module and descending power amplifier module; Data feedback channel comprises up input stage multisystem splitter, up ICS interference cancellation module and up power amplifier module.
The input of the descending input stage multisystem splitter of multi-system access platform 400 and the input of up input stage multisystem splitter are supported respectively China Mobile GSM signal transmitting and receiving machine, the TD of China Mobile signal transmitting and receiving machine, the GSM of CHINAUNICOM signal transmitting and receiving machine, the WCDMA of CHINAUNICOM signal transmitting and receiving, the LTE of China Mobile signal transmitting and receiving machine, the LTE of CHINAUNICOM signal transmitting and receiving machine and Wi-Fi signal transmitting and receiving machine.
The distributed antenna communications system that the utility model provides, the integrated transmission-receiving function of two paths of signals, realized high-speed carriering tool to the transmitting-receiving of two paths of signals and switching, by two antenna cooperatives, completing base station switches, can effectively reduce handoff failure probability and HO-break duration, solve the signal interruption problem that high-speed carriering tool produces because of base station shifting when crossing over overlay region, base station, guaranteed the stable transfer of data on bullet train; Adopt multi-system access platform, make distributed antenna communications system can support multiple home control network communication protocol, be convenient to the use of all types of user in high-speed carriering tool.
More than describe preferred embodiment of the present utility model in detail.Should be appreciated that those of ordinary skill in the art just can make many modifications and variations according to design of the present utility model without creative work.Therefore, all technical staff in the art comply with design of the present utility model on the basis of existing technology by the available technical scheme of logical analysis, reasoning, or a limited experiment, all should be in the determined protection range by claims.
Claims (9)
1. a distributed antenna communications system, for high-speed carriering tool, it is characterized in that, comprise head antenna, trail antenna, window machine controller and base station access point, described head antenna transmission first signal, described trail antenna transmission secondary signal, described first signal is described high-speed carriering tool and signal identical or adjacent base station communication with described secondary signal; Described head antenna, described trail antenna are all connected with described window machine controller; Base station access point is connected with described window machine controller; Described window machine controller is according to the intensity of described first signal and described secondary signal, selected by one in described head antenna or described trail antenna transfer of data of carrying out between described high-speed carriering tool and described base station.
2. distributed antenna communications system as claimed in claim 1, it is characterized in that, the intensity of described first signal is more than or equal to the intensity of described secondary signal, and described distributed antenna communications system carries out the transfer of data between described bullet train and described base station by described head antenna; The intensity of described first signal is less than the intensity of described secondary signal, and described distributed antenna communications system carries out the transfer of data between described bullet train and described base station by described trail antenna.
3. distributed antenna communications system as claimed in claim 2, is characterized in that, described window machine controller comprises the first transceiver module, the second transceiver module, control module and memory module; Described the first transceiver module is for the treatment of described first signal; Described the second transceiver module is for the treatment of described secondary signal.
4. distributed antenna communications system as claimed in claim 3, it is characterized in that, described control module comprises FPGA, described first signal and described secondary signal are connected respectively to the input of described FPGA, and the output signal of described FPGA is for controlling a job of described the first transceiver module and described the second transceiver module.
5. distributed antenna communications system as claimed in claim 1, is characterized in that, described distributed antenna communications system also comprises multi-system access platform, and described multi-system access platform is arranged between described window machine controller and described base station access point.
6. distributed antenna communications system as claimed in claim 5, is characterized in that, described multi-system access platform can be supported GSM, WCDMA, LTE or Wi-Fi.
7. distributed antenna communications system as claimed in claim 5, is characterized in that, described multi-system access platform comprises down going channel and data feedback channel.
8. distributed antenna communications system as claimed in claim 7, is characterized in that, described down going channel comprises descending input stage multisystem splitter, descending ICS interference cancellation module and descending power amplifier module; Described data feedback channel comprises up input stage multisystem splitter, up ICS interference cancellation module and up power amplifier module.
9. distributed antenna communications system as claimed in claim 8, it is characterized in that, the input of the descending input stage multisystem splitter of described multi-system access platform and the input of up input stage multisystem splitter are supported respectively China Mobile GSM signal transmitting and receiving machine, the TD of China Mobile signal transmitting and receiving machine, the GSM of CHINAUNICOM signal transmitting and receiving machine, the WCDMA of CHINAUNICOM signal transmitting and receiving, the LTE of China Mobile signal transmitting and receiving machine, the LTE of CHINAUNICOM signal transmitting and receiving machine and Wi-Fi signal transmitting and receiving machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420197529.2U CN203827347U (en) | 2014-04-22 | 2014-04-22 | Distributed antenna communication system for high speed vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420197529.2U CN203827347U (en) | 2014-04-22 | 2014-04-22 | Distributed antenna communication system for high speed vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203827347U true CN203827347U (en) | 2014-09-10 |
Family
ID=51482804
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420197529.2U Expired - Fee Related CN203827347U (en) | 2014-04-22 | 2014-04-22 | Distributed antenna communication system for high speed vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203827347U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107659972A (en) * | 2017-04-05 | 2018-02-02 | 中科凯普（北京）导航通信技术有限公司 | A kind of data transfer optimization method in high-speed railway communication private network |
| CN110113726A (en) * | 2019-05-21 | 2019-08-09 | 唐利(上海)信息科技有限公司 | Vehicle network switching method and device |
| CN111145370A (en) * | 2019-12-31 | 2020-05-12 | 北京握奇数据股份有限公司 | Antenna system of vehicle-mounted electronic tag |
| CN112910535A (en) * | 2021-02-05 | 2021-06-04 | 陕西天基通信科技有限责任公司 | System and method for improving coverage efficiency of 5G repeater |
-
2014
- 2014-04-22 CN CN201420197529.2U patent/CN203827347U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107659972A (en) * | 2017-04-05 | 2018-02-02 | 中科凯普（北京）导航通信技术有限公司 | A kind of data transfer optimization method in high-speed railway communication private network |
| CN110113726A (en) * | 2019-05-21 | 2019-08-09 | 唐利(上海)信息科技有限公司 | Vehicle network switching method and device |
| CN110113726B (en) * | 2019-05-21 | 2022-02-01 | 唐利(上海)信息科技有限公司 | Vehicle network switching method and device |
| CN111145370A (en) * | 2019-12-31 | 2020-05-12 | 北京握奇数据股份有限公司 | Antenna system of vehicle-mounted electronic tag |
| CN111145370B (en) * | 2019-12-31 | 2021-09-07 | 北京握奇数据股份有限公司 | Antenna system of vehicle-mounted electronic tag |
| CN112910535A (en) * | 2021-02-05 | 2021-06-04 | 陕西天基通信科技有限责任公司 | System and method for improving coverage efficiency of 5G repeater |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101888679B (en) | Multi-vehicle mounted station cooperation cell switching method for train-ground communication under high-speed moving environment | |
| CN203827347U (en) | Distributed antenna communication system for high speed vehicle | |
| CN103220738B (en) | A kind of data communication system used for high-speed railway and communication means thereof | |
| CN103442362B (en) | Communication device and method for interference coordination and energy conservation with same adopted | |
| CN101388814B (en) | Method and system for mobile terminal data transmission | |
| CN102316472B (en) | Vehicle access method based on long term evolution (LTE) and system thereof | |
| CN103582091A (en) | Method and device for base station energy-saving operation in high-speed rail private network | |
| CN102324958A (en) | Wireless communication method used for MIMO (multiple input multiple output) system under high-speed railway environment | |
| CN101958747B (en) | Mobile communication system and method in high-speed moving environment | |
| CN103428709B (en) | mixed communication method and system | |
| CN102711199B (en) | Double-antenna handover system in GSM-R (global system for mobile communication for railway) network and method thereof | |
| CN112235879A (en) | Railway train control dual-mode wireless terminal and implementation method | |
| CN201118567Y (en) | Wireless data transmission device | |
| CN202261813U (en) | Vehicle-mounted access system based on long term evolution (LTE) | |
| CN103888984A (en) | Method of base station radio frequency unit redundant hot backup and system thereof | |
| CN103220744A (en) | Communication system and method applied to traffic tool | |
| CN209562812U (en) | Communication system based on high speed urban rail | |
| CN105472625A (en) | High-attitude platform collaborative coverage method and device and high-attitude platforms | |
| CN105246115A (en) | Multi-cell cooperation rapid handoff switching method based on switching invitation | |
| CN104053201A (en) | Main relay and backup relay switching method for high-speed railway | |
| CN104703240B (en) | A kind of multiple antennas switching method towards track traffic | |
| CN203734846U (en) | High-speed mobile rail transit ground gateway gathering base station | |
| CN106209182A (en) | The method realizing communicating between remote seat in the plane, Civil Aviation Airport and airline management center | |
| CN203243526U (en) | Indoor coverage accessing device and indoor coverage system | |
| CN106797072A (en) | Access node, scheduling system, base station and data back method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140910 Termination date: 20160422 |