CN102316472B - Vehicle access method based on long term evolution (LTE) and system thereof - Google Patents
Vehicle access method based on long term evolution (LTE) and system thereof Download PDFInfo
- Publication number
- CN102316472B CN102316472B CN201110264728.1A CN201110264728A CN102316472B CN 102316472 B CN102316472 B CN 102316472B CN 201110264728 A CN201110264728 A CN 201110264728A CN 102316472 B CN102316472 B CN 102316472B
- Authority
- CN
- China
- Prior art keywords
- lte
- signal
- vehicle
- microwave
- transmit
- 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.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 55
- 230000007774 longterm Effects 0.000 title abstract description 4
- 230000008569 process Effects 0.000 claims abstract description 14
- 238000012545 processing Methods 0.000 claims description 37
- 238000011144 upstream manufacturing Methods 0.000 claims description 30
- 230000005540 biological transmission Effects 0.000 claims description 17
- 239000013307 optical fiber Substances 0.000 claims description 7
- 238000005538 encapsulation Methods 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 abstract description 7
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 238000009434 installation Methods 0.000 abstract 1
- 238000013461 design Methods 0.000 description 7
- 230000008859 change Effects 0.000 description 6
- 238000004891 communication Methods 0.000 description 5
- 230000011664 signaling Effects 0.000 description 5
- 230000006855 networking Effects 0.000 description 4
- 238000012546 transfer Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 230000002452 interceptive effect Effects 0.000 description 2
- 238000010295 mobile communication Methods 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 230000008054 signal transmission Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
Images
Abstract
The invention provides a vehicle access method based on long term evolution (LTE) and a system thereof. The system of the invention comprises: a vehicle base station, a vehicle LTE transceiver unit and a vehicle microwave transceiver unit. The method of the invention comprises an uplink access process and a downlink access process. The uplink access process is characterized in that: the vehicle base station receives a wireless signal in a compartment; the signal is converted into uplink data after being processed; and the uplink data is converted into an uplink LTE standard signal after being processed by an LTE standard; then, the uplink LTE standard signal is modulated into an uplink microwave signal and is sent out. The downlink access process is characterized in that: after receiving a downlink microwave signal, the vehicle microwave transceiver unit converts the downlink microwave signal into a downlink LTE standard signal; the downlink LTE standard signal is converted into downlink data after being processed by the LTE standard; and then the downlink data is converted into a downlink wireless signal after being processed by the vehicle base station and is sent to user equipment. In the method and system, a microwave technology is used so that interference of a frequency of the vehicle base station to cochannel cells along railway can be effectively avoided. Antennas are short, which is beneficial to traffic safety and train installation.
Description
Technical field
The present invention relates to the mobile communication technology field, particularly a kind of vehicle-mounted cut-in method and a kind of vehicle-mounted connecting system based on LTE based on LTE.
Background technology
In mobile communications network, no matter be 2G or 3G, in the situation that adopt traditional coverage mode, to business such as the access of the mobile subscriber in high-speed motion and conversations, can not provide good service, this point is particularly evident on high ferro.The climax of building along with Chinese high ferro arrives, and the scale of high-speed railway network is increasing, and train running speed can be more and more faster.
Be accompanied by the raising of the high ferro speed of service, the seal of high ferro railway car also improves thereupon, train adopts the totally enclosed type body construction, glass has also adopted metal coating glass, thereby cause the car body penetration loss to increase substantially, the signal strength signal intensity that in compartment, mobile phone receives is significantly decay thereupon also.And along with the speed of service of high ferro train from 300 kilometers/hour to 400 kilometers/hour even 500 kilometers/hour, the lifting of speed causes the user frequently to be switched, in switching, at network side, also can cause a large amount of signallings, cause so-called signaling storm, thereby the problem that the user connects, handover success rate reduces occurs, the user experiences variation.
In order to solve the problem of above-mentioned high ferro communication, stable, broadband and communication service reliably are provided between car ground, there is company to propose (the Long Term Evolution based on LTE, Long Term Evolution) high-speed railway LTE cell on wheels scheme, to realize HRC(High-Speed Railway Communication, high-speed railway communication) end-to-end solution.By using the state-of-the-art LTE technology of current industry, by HRC Vehicle mounted station allocating antenna, at the compartment outer end, in compartment, Vehicle mounted station converges, distributes Abis, the Iub interface data of vehicle-mounted 2G/3G base station equipment; High ferro passenger, by integrated access equipment access 2G/3G network in compartment, in train travelling process, not only without car body loss problem, does not have the minizone switching yet, does not more have the mobile signaling storm problem caused of group.
But still have a problem while adopting said method, work as high ferro fast through out-of-date, the frequency of cell on wheels can be brought interference to other macro base stations, especially near the frequency of the macro base station station, city, increases the network planning design difficulty of high ferro networking.And due to the high-speed cruising of train, also more and more higher to the requirement of the size of top antenna, antenna size is larger, and during high-speed motion, windage also can be larger, causes train to have larger potential safety hazard when high-speed motion.
Summary of the invention
For above-mentioned problems of the prior art, the object of the present invention is to provide a kind of vehicle-mounted cut-in method and system based on LTE, can effectively solve the frequency of cell on wheels to the interference of railway co-frequency cell on the way and the problem of traffic safety.
A kind of vehicle-mounted cut-in method based on LTE, comprise up access procedure and descending access procedure;
Described up access procedure comprises the following steps: cell on wheels receives the up-link wireless signal in compartment, become upstream data after processing, convert up LTE standard signal to after the LTE standard is processed, then by the vehicle-carried microwave Transmit-Receive Unit, be modulated to up microwave signal and outwards send;
Described descending access procedure comprises the following steps: the vehicle-carried microwave Transmit-Receive Unit converts thereof into descending LTE standard signal after receiving descending microwave signal, become downlink data after the LTE standard is processed, after then being processed by cell on wheels, become downstream wireless signals and send to subscriber equipment;
In described up access procedure, after at described vehicle-carried microwave Transmit-Receive Unit, described up LTE standard signal being modulated to up microwave signal outside the transmission, also comprise step: after roadbed microwave transmitting and receiving unit receives described up microwave signal, whether the intensity that judges described up microwave signal is greater than default threshold value, if described up microwave signal is demodulated to up LTE standard signal, then after the LTE standard is processed, becomes upstream data and send to core net;
In described descending access procedure, before described vehicle-carried microwave Transmit-Receive Unit receives described descending microwave signal, also comprise step: receive LTE SAE downlink data, convert descending LTE standard signal to after the LTE standard is processed, then by roadbed microwave transmitting and receiving cells modulate, become descending microwave signal and send to described vehicle-carried microwave Transmit-Receive Unit.
A kind of vehicle-mounted connecting system based on LTE comprises:
Cell on wheels, for receiving the up-link wireless signal in compartment, become upstream data and send to vehicle-mounted LTE Transmit-Receive Unit after processing; And receive the downlink data that described vehicle-mounted LTE Transmit-Receive Unit sends over, become downstream wireless signals after processing and send to subscriber equipment;
Vehicle-mounted LTE Transmit-Receive Unit for receiving described upstream data, converts up LTE standard signal to and sends to the vehicle-carried microwave Transmit-Receive Unit after the LTE standard is processed; And the descending LTE standard signal after receiving demodulation, become downlink data and send to described cell on wheels after the LTE standard is processed;
The vehicle-carried microwave Transmit-Receive Unit, for receiving described up LTE standard signal, be modulated to after up microwave signal to outer transmission; And receive descending microwave signal, send to described vehicle-mounted LTE Transmit-Receive Unit after being demodulated to descending LTE standard signal;
At least one roadbed microwave transmitting and receiving unit, for receiving described up microwave signal, whether the intensity that judges described up microwave signal is greater than default threshold value, if described up microwave signal be demodulated to up LTE standard signal and send to LTE ENodeB unit; And receive the descending LTE standard signal in described LTE EnodeB unit, send to described vehicle-carried microwave Transmit-Receive Unit after being modulated into descending microwave signal;
LTE EnodeB unit, for the up LTE standard signal after receiving demodulation, send to LTE SAE unit become upstream data after the LTE standard is processed after; And receive the downlink data that described LTE SAE unit sends over, be converted to descending LTE standard signal and send to described roadbed microwave transmitting and receiving unit after the LTE standard is processed;
LTE SAE unit, the upstream data sent for receiving described LTE EnodeB unit, send to core net after processing; And receive the downlink data that core net sends to LTE EnodeB unit, send to LTE EnodeB unit after processing.
From above scheme, can find out, vehicle-mounted cut-in method and system based on LTE of the present invention, owing to having utilized microwave as wireless signal transmission, when high ferro or other equipment that use native system during fast through somewhere, the frequency of cell on wheels can not brought interference to the frequency of other macro base stations (near especially macro base station railway station), has greatly reduced the network planning design difficulty of high ferro networking; And because the frequency of microwave is high, so less than the antenna size of traditional LTE frequency range on the size design of top antenna, the windage while having reduced the train high-speed cruising, the fail safe that has improved bullet train, also be conducive to train and install.
The accompanying drawing explanation
Fig. 1 is the vehicle-mounted cut-in method schematic flow sheet that the present invention is based on LTE;
Fig. 2 is the structural representation that the present invention is based on the vehicle-mounted connecting system of LTE;
The structural representation that Fig. 3 is the vehicle-mounted connecting system based on LTE in embodiment tri-;
The structural representation that Fig. 4 is the micro-base station access system of vehicle multi-mode in embodiment tri-;
Fig. 5 is vehicle-mounted LTE Transmit-Receive Unit in embodiment tri-and the connection diagram of other equipment;
The structural representation that Fig. 6 is the microwave transmission subsystem in embodiment tri-;
The structural representation that Fig. 7 is the roadbed receiving subsystem in embodiment tri-.
Embodiment
The invention provides a kind of vehicle-mounted cut-in method and system based on LTE, the frequency interferences caused due to the train fast moving during the solution tradition covers and the problem of traffic safety, be mainly used on the high ferro of high-speed mobile.Below for vehicle-mounted cut-in method based on LTE of the present invention and the specific embodiment of system, be described in detail.
Embodiment mono-
As shown in Figure 1, the vehicle-mounted cut-in method based on LTE of the present invention, comprise up access procedure and descending access procedure;
Up access procedure comprises the following steps: ON TRAINS, cell on wheels receives the up-link wireless signal in compartment, become upstream data after processing, after the LTE standard is processed, convert up LTE standard signal to, then by the vehicle-carried microwave Transmit-Receive Unit, be modulated to up microwave signal and outwards send;
Descending access procedure comprises the following steps: the vehicle-carried microwave Transmit-Receive Unit converts thereof into descending LTE standard signal after receiving descending microwave signal, become downlink data after the LTE standard is processed, after then being processed by cell on wheels, become downstream wireless signals and send to subscriber equipment.
In addition, in described up access procedure, after at described vehicle-carried microwave Transmit-Receive Unit, described up LTE standard signal being modulated to up microwave signal outside the transmission, can also comprise step: after roadbed microwave transmitting and receiving unit receives described up microwave signal, whether the intensity that judges described up microwave signal is greater than default threshold value, if described up microwave signal is demodulated to up LTE standard signal, then after the LTE standard is processed, becomes upstream data and send to core net; And
In described descending access procedure, before described vehicle-carried microwave Transmit-Receive Unit receives described descending microwave signal, can also comprise step: receive the downlink data in core net, convert descending LTE standard signal to after the LTE standard is processed, then by roadbed microwave transmitting and receiving cells modulate, become descending microwave signal and send to described vehicle-carried microwave Transmit-Receive Unit.
The process that above-mentioned LTE standard is processed specifically comprises: modulation, demodulation, encapsulation, decapsulation, error handling processing, re-transmission, scheduling etc.
As an embodiment preferably, when transfer of data, above-mentioned up LTE standard signal, descending LTE standard signal can be adjusted to intermediate-freuqncy signal to facilitate transmission.
The wireless signal that receives and transmit in vehicle-mounted cut-in method based on LTE of the present invention, can comprise any one or combination in any in the wireless signal of the wireless signal of wireless signal, WCDMA standard of wireless signal, the LTE standard of wireless signal, the TD standard of GSM standard and WLAN standard, realize that multimode truly covers.
Preferably, microwave signal frequency range of the present invention is 6GHz～23GHz.
Embodiment bis-
Corresponding with the vehicle-mounted cut-in method based on LTE of the present invention, the present invention also provides a kind of vehicle-mounted connecting system based on LTE, as shown in Figure 2, comprising:
Cell on wheels, at up direction, receive the up-link wireless signal in compartment, becomes upstream data after processing and send to vehicle-mounted LTE Transmit-Receive Unit (can be sent by Iub interface); And, at down direction, receive the downlink data that vehicle-mounted LTE Transmit-Receive Unit sends over, become downstream wireless signals after processing and send to subscriber equipment;
The vehicle-carried microwave Transmit-Receive Unit, for receiving described up LTE standard signal, be modulated to after up microwave signal to outer transmission; And receive descending microwave signal, send to described vehicle-mounted LTE Transmit-Receive Unit after being demodulated to descending LTE standard signal.
Vehicle-mounted LTE Transmit-Receive Unit, at up direction, receive the upstream data that described cell on wheels sends, and after the LTE standard is processed, converts up LTE standard signal to and send to the vehicle-carried microwave Transmit-Receive Unit; And, at down direction, the descending LTE standard signal after the demodulation that reception vehicle-carried microwave Transmit-Receive Unit sends over becomes downlink data and sends to described cell on wheels after the LTE standard is processed;
The vehicle-carried microwave Transmit-Receive Unit, at up direction, receive the up LTE standard signal that vehicle-mounted LTE Transmit-Receive Unit sends, and is modulated to after up microwave signal to outer transmission; And, at down direction, receive descending microwave signal, send to described vehicle-mounted LTE Transmit-Receive Unit after being demodulated to descending LTE standard signal.
As an embodiment preferably, as shown in Figure 3, the vehicle-mounted connecting system based on LTE of the present invention can also comprise:
At least one roadbed microwave transmitting and receiving unit, be used at up direction, receive the up microwave signal that the vehicle-carried microwave Transmit-Receive Unit sends, whether the intensity that judges described up microwave signal is greater than default threshold value, if described up microwave signal be demodulated to up LTE standard signal and send to LTE ENodeB unit; Close if not return path (the roadbed microwave transmitting and receiving unit that can from a plurality of roadbed microwave transmitting and receivings unit, select an optimum by the step of above-mentioned judgement carries out transfer of data, and also uses this roadbed microwave transmitting and receiving unit when downlink transfer); And, at down direction, receive the descending LTE standard signal in LTE EnodeB unit, send to described vehicle-carried microwave Transmit-Receive Unit after being modulated into descending microwave signal;
LTE EnodeB unit, at up direction, receive the up LTE standard signal after the demodulation that roadbed microwave transmitting and receiving unit sends over, and sends to LTE SAE unit become upstream data after the LTE standard is processed after; And, at up direction, receive the downlink data that described LTE SAE unit sends over, be converted to descending LTE standard signal and send to described roadbed microwave transmitting and receiving unit after the LTE standard is processed;
LTE SAE(System Architecture Evolution, System Architecture Evolution) unit, after receiving the upstream data that LTE EnodeB sends over, by the data destination, forwarded, be specially: receive the upstream data that described LTE EnodeB unit sends, send to CN(Core Network after processing, core net); And receive the downlink data that core net sends to LTE EnodeB unit, send to LTE EnodeB unit after processing.
Embodiment tri-
As an embodiment preferably, vehicle-mounted connecting system of the present invention can comprise three subsystems (each unit in embodiment bis-is included in respectively in each subsystem): roadbed receiving subsystem, microwave transmission subsystem, vehicle-mounted access subsystem, as shown in Figure 3, the multimode covering that these three subsystems cooperatively interact and realize high ferro.
Wherein, vehicle-mounted access subsystem is whole being placed in train, mainly by the micro-base station access system of vehicle multi-mode, formed, the micro-base station access system of this vehicle multi-mode comprises cell on wheels and the vehicle-mounted LTE Transmit-Receive Unit in embodiment bis-, further, described cell on wheels can comprise gsm module, the TD module, the LTE module, the WCDMA module, any one in the WLAN module or combination in any, to realize GSM, TD-SCDMA, LTE, WCDMA standard cellphone subscriber's access and realize Wifi and the broadband access function, to support the various wireless access ways such as GSM/EDGE/TD-SCDMA/LTE/WCDMA/Wi-Fi and various Informatization Service functions in compartment be provided, realize that multimode truly covers, as shown in Figure 4.
Gsm module is equivalent to a GSM standard base station, and energy reception & disposal GSM standard wireless signal, be responsible for the access of the interior GSM standard mobile phone speech of high ferro train and other business.The specific works process is as follows: receive the GSM standard up-link wireless signal of subscriber equipment, change upstream data after processing into and send to described vehicle-mounted LTE Transmit-Receive Unit; And receive the downlink data that described vehicle-mounted LTE Transmit-Receive Unit sends, become GSM standard downstream wireless signals after processing and send to subscriber equipment.
The TD module is equivalent to a TD-SCDMA standard base station, and energy reception & disposal TD-SCDMA standard wireless signal, be responsible for the access of the interior TD-SCDMA standard mobile phone speech of high ferro train and other business.The specific works process is as follows: receive the TD-SCDMA standard up-link wireless signal of subscriber equipment, change upstream data after processing into and send to described vehicle-mounted LTE Transmit-Receive Unit; And receive the downlink data that described vehicle-mounted LTE Transmit-Receive Unit sends, become TD-SCDMA standard downstream wireless signals after processing and send to subscriber equipment.
The LTE module is equivalent to a LTE standard base station, energy reception & disposal LTE(TDD or FDD) the standard wireless signal, be responsible for the access of the interior LTE standard mobile phone speech of high ferro train and other business.The specific works process is as follows: receive the LTE standard up-link wireless signal of subscriber equipment, change upstream data after processing into and send to described vehicle-mounted LTE Transmit-Receive Unit; And receive the downlink data that described vehicle-mounted LTE Transmit-Receive Unit sends, become LTE standard downstream wireless signals after processing and send to subscriber equipment.
The WCDMA module is equivalent to a WCDMA standard base station, and energy reception & disposal WCDMA standard wireless signal, be responsible for the access of the interior WCDMA standard mobile phone speech of high ferro train and other business.The specific works process is as follows: receive the WCDMA standard up-link wireless signal of subscriber equipment, change upstream data after processing into and send to described vehicle-mounted LTE Transmit-Receive Unit; And receive the downlink data that described vehicle-mounted LTE Transmit-Receive Unit sends, become WCDMA standard downstream wireless signals after processing and send to subscriber equipment.
The various wireless signals of WLAN module energy reception & disposal based on 802.11 agreements, be responsible for the access of WLAN business in the high ferro train.The specific works process is as follows: receive the various wireless signals based on the 802.1X agreement, change upstream data after processing into and send to described vehicle-mounted LTE Transmit-Receive Unit; And receive the downlink data that described vehicle-mounted LTE Transmit-Receive Unit sends, become the WLAN Data Concurrent after processing and give subscriber equipment.
As shown in Figure 4, gsm module, TD module, LTE module, WCDMA module, WLAN module can be connected with vehicle-mounted LTE Transmit-Receive Unit by optical fiber or Ethernet, vehicle-mounted LTE Transmit-Receive Unit also can be used optical fiber or Ethernet to be connected with the equipment (vehicle-carried microwave Transmit-Receive Unit) in the microwave transmission subsystem, by vehicle-mounted LTE Transmit-Receive Unit, the wireless signal of different systems in each standard module is consigned to the roadbed receiving subsystem by the microwave transmission subsystem after treatment.
The connection diagram that Fig. 5 is vehicle-mounted LTE Transmit-Receive Unit and other equipment, visible vehicle-mounted LTE Transmit-Receive Unit can also comprise interface board, interface board provides base-station interface (Iub interface) and Ethernet interface, the base-station interface that the interface board of different size can provide is different with Ethernet interface quantity, can change according to demand interface board, realize base station and the Ethernet interface combination of plurality of specifications.Base-station interface can be connected with the base station equipment of other standards, realize being connected of other base stations and base station controller or core net, Ethernet interface can be supported the equipment connection of Ethernet interface with vehicle-mounted other, realize as vehicle-mounted monitoring equipment, the function such as video TV, wifi, vehicle-mounted LTE Transmit-Receive Unit can be connected with other base station equipments of supporting base-station interface and/or be connected with other equipment of supporting Ethernet interface by this interface board.
The vehicle-carried microwave Transmit-Receive Unit of microwave transmission subsystem in comprising embodiment bis-, roadbed microwave transmitting and receiving unit, can also comprise and be placed in antenna, this antenna can be contained in the positions such as headstock or roof, as shown in the structural representation of Fig. 6 microwave transmission subsystem, the microwave transmission subsystem can be for realizing the wireless transmission between train and ground.
The vehicle-carried microwave Transmit-Receive Unit is used Ethernet to be connected with antenna, at up direction, the vehicle-carried microwave Transmit-Receive Unit is used microwave and roadbed microwave transmitting and receiving unit interactive information by antenna, and after roadbed microwave transmitting and receiving unit receives the microwave signal that antenna sends, solution is transferred to intermediate-freuqncy signal and is sent to the roadbed receiving subsystem.The down direction course of work of microwave transmission subsystem is fully contrary with the process of up direction, and it will not go into details herein.
Be illustrated in figure 7 the roadbed receiving subsystem structural representation in the present embodiment, the roadbed receiving subsystem comprises LTE ENodeB unit (being the LTE base station) and LTE SAE unit, for the data by vehicle-mounted access subsystem and the data in core net, carries out alternately.
Between LTE ENodeB unit and roadbed microwave transmitting and receiving unit, adopt IF interface to realize connecting, specifically can use optical fiber or Ethernet to connect.
Preferably, LTE SAE unit can, by the connection of S1 Interface realization and LTE ENodeB unit, specifically also can be used optical fiber or Ethernet to connect.
As can be seen from Figure 7, a roadbed LTE base station (being LTE EnodeB unit) can connect a plurality of roadbed microwave transmitting and receivings unit, and concrete number of connection depends on the quantity of passback optical fiber in the capacity of LTE base station and practice of construction or Ethernet.
It should be noted that, the Doppler frequency deviation when microwave high-frequency rate has increased the high ferro high-speed cruising, but this problem can effectively solve by the anti-Doppler frequency deviation algorithm that improves vehicle-mounted LTE Transmit-Receive Unit.
By above several embodiment, can find out, vehicle-mounted cut-in method and the system based on LTE of the present invention has following advantage:
One, the cell on wheels in the present invention has comprised gsm module, TD module, LTE module, WCDMA module, WLAN module, therefore can realize the various wireless access ways such as GSM/EDGE/TD-SCDMA/LTE/WCDMA/WLAN and various Informatization Service functions compartment in are provided, realizing multimode covering truly;
Two, due to vehicle-mounted access subsystem is placed in to train inside, make signal directly at the train internal communication, eliminated the car body penetration loss; And, by the network insertions such as GSM/TD/LTE that in compartment, vehicle-mounted access subsystem provides, in train travelling process, there is no the minizone switching problem, there do not is the signaling storm caused due to frequent switching yet;
Three, owing to having adopted the LTE technology, the signaling that LTE simplifies and flat networking design, make community switching time between vehicle-mounted LTE Transmit-Receive Unit and roadbed LTE ENodeB than having improved 10 times the switching time of traditional 2G, make community switched design difficulty obtain larger simplification; And can hang a plurality of microwave upstream device under a LTE ENodeB, so increased the overlay area of Yi Ge LTE community, reduce the frequency of community switching between vehicle-mounted LTE transmitter module and LTE ENodeB;
Four, most important, because vehicle-mounted cut-in method of the present invention and system have adopted microwave technology, using microwave as wireless signal transmission, when high ferro or other equipment that use native system during fast through somewhere, the frequency of cell on wheels can be to Along Railway, particularly near the frequency of other 2G/3G base stations station, city causes interference, can effectively avoid interfering with each other between cell on wheels (inner AT STATION simultaneously, the multiple row train may be arranged simultaneously, these trains are again the dynamic high speed operations, on frequency planning, be difficult to avoid interference), greatly reduce the network planning design difficulty of high ferro networking, in addition because method and system of the present invention have been used microwave technology, because the frequency of microwave is high, so less than the antenna size of traditional LTE frequency range on the size design of top antenna, the fail safe that reduces to have improved bullet train of antenna size, undersized antenna can also reduce windage in addition, be conducive to train and install, for traffic safety provides powerful guarantee.
Above-described embodiment of the present invention, do not form limiting the scope of the present invention.Any modification of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in claim protection range of the present invention.
Claims (8)
1. the vehicle-mounted connecting system based on LTE, is characterized in that, comprising:
Cell on wheels, for receiving the up-link wireless signal in compartment, become upstream data and send to vehicle-mounted LTE Transmit-Receive Unit after processing; And receive the downlink data that described vehicle-mounted LTE Transmit-Receive Unit sends over, become downstream wireless signals after processing and send to subscriber equipment;
Vehicle-mounted LTE Transmit-Receive Unit for receiving described upstream data, converts up LTE standard signal to and sends to the vehicle-carried microwave Transmit-Receive Unit after the LTE standard is processed; And the descending LTE standard signal after receiving demodulation, become downlink data and send to described cell on wheels after the LTE standard is processed;
The vehicle-carried microwave Transmit-Receive Unit, for receiving described up LTE standard signal, be modulated to after up microwave signal to outer transmission; And receive descending microwave signal, send to described vehicle-mounted LTE Transmit-Receive Unit after being demodulated to descending LTE standard signal;
At least one roadbed microwave transmitting and receiving unit, for receiving described up microwave signal, whether the intensity that judges described up microwave signal is greater than default threshold value, if described up microwave signal be demodulated to up LTE standard signal and send to LTE ENodeB unit; And receive the descending LTE standard signal in described LTE EnodeB unit, send to described vehicle-carried microwave Transmit-Receive Unit after being modulated into descending microwave signal;
LTE EnodeB unit, for the up LTE standard signal after receiving demodulation, send to LTE SAE unit become upstream data after the LTE standard is processed after; And receive the downlink data that described LTE SAE unit sends over, be converted to descending LTE standard signal and send to described roadbed microwave transmitting and receiving unit after the LTE standard is processed;
LTE SAE unit, the upstream data sent for receiving described LTE EnodeB unit, send to core net after processing; And receive the downlink data that core net sends to LTE EnodeB unit, send to LTE EnodeB unit after processing.
2. the vehicle-mounted connecting system based on LTE according to claim 1, is characterized in that, described cell on wheels comprises any one or the combination in any in gsm module, TD module, LTE module, WCDMA module, WLAN module;
Described gsm module, for receiving the GSM standard up-link wireless signal of subscriber equipment, changes upstream data into and sends to described vehicle-mounted LTE Transmit-Receive Unit after processing; And receive the downlink data that described vehicle-mounted LTE Transmit-Receive Unit sends, become GSM standard downstream wireless signals after processing and send to subscriber equipment;
Described TD module, for receiving the TD-SCDMA standard up-link wireless signal of subscriber equipment, changes upstream data into and sends to described vehicle-mounted LTE Transmit-Receive Unit after processing; And receive the downlink data that described vehicle-mounted LTE Transmit-Receive Unit sends, become TD-SCDMA standard downstream wireless signals after processing and send to subscriber equipment;
Described LTE module, for receiving the LTE standard up-link wireless signal of subscriber equipment, changes upstream data into and sends to described vehicle-mounted LTE Transmit-Receive Unit after processing; And receive the downlink data that described vehicle-mounted LTE Transmit-Receive Unit sends, become LTE standard downstream wireless signals after processing and send to subscriber equipment;
Described WCDMA module, for receiving the WCDMA standard up-link wireless signal of subscriber equipment, changes upstream data into and sends to described vehicle-mounted LTE Transmit-Receive Unit after processing; And receive the downlink data that described vehicle-mounted LTE Transmit-Receive Unit sends, become WCDMA standard downstream wireless signals after processing and send to subscriber equipment;
Described WLAN module, for receiving the various wireless signals based on the 802.1X agreement, changes upstream data into and sends to described vehicle-mounted LTE Transmit-Receive Unit after processing; And receive the downlink data that described vehicle-mounted LTE Transmit-Receive Unit sends, become the WLAN Data Concurrent after processing and give subscriber equipment.
3. the vehicle-mounted connecting system based on LTE according to claim 2 is characterized in that:
Described vehicle-mounted LTE Transmit-Receive Unit comprises interface board, and described interface board comprises one or more base-station interfaces and/or one or more Ethernet interface;
And/or
Described vehicle-mounted connecting system also comprises antenna.
4. the vehicle-mounted connecting system based on LTE according to claim 3, it is characterized in that, between described vehicle-mounted LTE Transmit-Receive Unit and described vehicle-carried microwave Transmit-Receive Unit, between described roadbed microwave transmitting and receiving unit and described LTE ENodeB unit, between described LTE ENodeB unit and described LTE SAE unit, use optical fiber or Ethernet to connect; Described vehicle-carried microwave Transmit-Receive Unit is connected by Ethernet with antenna; Described gsm module, TD module, LTE module, WLAN module are connected with described vehicle-mounted LTE Transmit-Receive Unit by optical fiber or Ethernet respectively.
5. the vehicle-mounted cut-in method based on LTE, comprise up access procedure and descending access procedure, it is characterized in that:
Described up access procedure comprises the following steps: cell on wheels receives the up-link wireless signal in compartment, become upstream data after processing, convert up LTE standard signal to after the LTE standard is processed, then by the vehicle-carried microwave Transmit-Receive Unit, be modulated to up microwave signal and outwards send;
Described descending access procedure comprises the following steps: the vehicle-carried microwave Transmit-Receive Unit converts thereof into descending LTE standard signal after receiving descending microwave signal, become downlink data after the LTE standard is processed, after then being processed by cell on wheels, become downstream wireless signals and send to subscriber equipment;
In described up access procedure, after at described vehicle-carried microwave Transmit-Receive Unit, described up LTE standard signal being modulated to up microwave signal outside the transmission, also comprise step: after roadbed microwave transmitting and receiving unit receives described up microwave signal, whether the intensity that judges described up microwave signal is greater than default threshold value, if described up microwave signal is demodulated to up LTE standard signal, then after the LTE standard is processed, becomes upstream data and send to core net;
In described descending access procedure, before described vehicle-carried microwave Transmit-Receive Unit receives described descending microwave signal, also comprise step: receive LTE SAE downlink data, convert descending LTE standard signal to after the LTE standard is processed, then by roadbed microwave transmitting and receiving cells modulate, become descending microwave signal and send to described vehicle-carried microwave Transmit-Receive Unit.
6. the vehicle-mounted cut-in method based on LTE according to claim 5 is characterized in that:
Wireless signal comprises any one or the combination in any in GSM standard signal, TD-SCDMA standard signal, LTE standard signal, WCDMA standard signal and WLAN standard signal.
7. according to the described vehicle-mounted cut-in method based on LTE of claim 5 or 6, it is characterized in that:
Described up LTE standard signal, descending LTE standard signal are intermediate-freuqncy signal;
And/or
The process that described LTE standard is processed specifically comprises: modulation, demodulation, encapsulation, decapsulation, error handling processing, re-transmission and scheduling.
8. the vehicle-mounted cut-in method based on LTE according to claim 7, is characterized in that, the frequency range of microwave signal is 6GHz～23GHz.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110264728.1A CN102316472B (en) | 2011-09-08 | 2011-09-08 | Vehicle access method based on long term evolution (LTE) and system thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110264728.1A CN102316472B (en) | 2011-09-08 | 2011-09-08 | Vehicle access method based on long term evolution (LTE) and system thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102316472A CN102316472A (en) | 2012-01-11 |
| CN102316472B true CN102316472B (en) | 2014-01-01 |
Family
ID=45429215
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110264728.1A Active CN102316472B (en) | 2011-09-08 | 2011-09-08 | Vehicle access method based on long term evolution (LTE) and system thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102316472B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103249088A (en) * | 2012-10-26 | 2013-08-14 | 重庆华非云通讯技术有限公司 | LTE (long term evolution)-WLAN (wireless local area network) compound networking method for vehicle-ground wireless communication system |
| CN102970731B (en) * | 2012-11-08 | 2016-04-06 | 京信通信系统（中国）有限公司 | A kind of radio switch-in method, system and equipment |
| CN103916947B (en) * | 2013-01-04 | 2018-01-30 | 中国移动通信集团公司 | A kind of operation method and device of public network base station |
| CN103607774B (en) * | 2013-11-28 | 2016-10-05 | 中国联合网络通信集团有限公司 | A kind of communication means, equipment |
| CN109474935B8 (en) * | 2018-11-28 | 2022-05-27 | 中科凯普（北京）导航通信技术有限公司 | Tunnel microwave communication transmission system and method |
| CN109246716A (en) * | 2018-11-30 | 2019-01-18 | 电子科技大学 | Improve the system and method for bullet train mobile communication coverage effect |
| CN109548199A (en) * | 2018-12-17 | 2019-03-29 | 深圳市奥克多普科技有限公司 | A kind of local microcellulor signal covering micro-base station application system |
| CN115119177B (en) * | 2022-08-24 | 2023-01-03 | 广东省新一代通信与网络创新研究院 | Vehicle-mounted communication system and method for vehicle-ground communication |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010105210A2 (en) * | 2009-03-12 | 2010-09-16 | Comsys Communication & Signal Processing Ltd. | Vehicle integrated communications system |
| CN102082713A (en) * | 2010-12-22 | 2011-06-01 | 深圳市华讯方舟科技有限公司 | High-speed rail mobile communication system and working method thereof |
| CN102104410A (en) * | 2011-01-18 | 2011-06-22 | 京信通信系统（中国）有限公司 | High-speed railway microwave communication network |
| CN102130716A (en) * | 2011-04-15 | 2011-07-20 | 电信科学技术研究院 | High speed mobile communication realization method and equipment |
| CN202261813U (en) * | 2011-09-08 | 2012-05-30 | 京信通信系统（中国）有限公司 | Vehicle-mounted access system based on long term evolution (LTE) |
-
2011
- 2011-09-08 CN CN201110264728.1A patent/CN102316472B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010105210A2 (en) * | 2009-03-12 | 2010-09-16 | Comsys Communication & Signal Processing Ltd. | Vehicle integrated communications system |
| CN102082713A (en) * | 2010-12-22 | 2011-06-01 | 深圳市华讯方舟科技有限公司 | High-speed rail mobile communication system and working method thereof |
| CN102104410A (en) * | 2011-01-18 | 2011-06-22 | 京信通信系统（中国）有限公司 | High-speed railway microwave communication network |
| CN102130716A (en) * | 2011-04-15 | 2011-07-20 | 电信科学技术研究院 | High speed mobile communication realization method and equipment |
| CN202261813U (en) * | 2011-09-08 | 2012-05-30 | 京信通信系统（中国）有限公司 | Vehicle-mounted access system based on long term evolution (LTE) |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102316472A (en) | 2012-01-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102316472B (en) | Vehicle access method based on long term evolution (LTE) and system thereof | |
| US20160249233A1 (en) | Providing broadband service to trains | |
| US11671878B2 (en) | Optimized train solution | |
| CN102324958A (en) | Wireless communication method used for MIMO (multiple input multiple output) system under high-speed railway environment | |
| CN102130716B (en) | The implementation method of high-speed mobile communications and equipment | |
| CN101958747B (en) | Mobile communication system and method in high-speed moving environment | |
| CN202261813U (en) | Vehicle-mounted access system based on long term evolution (LTE) | |
| CN102104410A (en) | High-speed railway microwave communication network | |
| CN103428709B (en) | mixed communication method and system | |
| CN209402739U (en) | A kind of network communicating system applied to mobile context | |
| EP3089265B1 (en) | Antenna system for vehicles | |
| CN105636145A (en) | 1.8GHz-based TD-LTE (Time Division Long Term Evolution) system used for subway rail communication | |
| CN106937336A (en) | A kind of method of cell switching and base station | |
| CN102130882A (en) | OFDM (orthogonal frequency division multiplexing)-based high-speed rail mobile communication method and system | |
| Yasuda et al. | A study on moving cell in 5g cellular system | |
| CN101272296B (en) | Multi-module wireless network device, system and method | |
| CN110247680A (en) | A kind of novel high-speed rail communication system based on power-line carrier communication | |
| CN103108396A (en) | Method and system of cooperative communication among vehicle-mounted mobile stations | |
| CN203827347U (en) | Distributed antenna communication system for high speed vehicle | |
| CN206061159U (en) | A kind of air-ground wideband communication system of 4G LTE | |
| CN209562812U (en) | Communication system based on high speed urban rail | |
| CN205122759U (en) | High -speed railway mobile communication network covers system | |
| CN109327875A (en) | A kind of transmission method technical field of the wireless communication transmissions device based on 4G module | |
| CN214228239U (en) | Short wave air-to-air communication system | |
| CN104954071B (en) | A kind of digital Optical fiber relay systems of LTE Advanced and its implementation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Zhang Yuanjian Inventor after: Deng Shiqun Inventor after: Chen Zhiming Inventor after: Qu Yang Inventor after: Zhang Cuan Inventor before: Zhang Yuanjian Inventor before: Deng Shiqun Inventor before: Chen Zhiming |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: ZHANG YUANJIAN DENG SHIQUN CHEN ZHIMING TO: ZHANG YUANJIAN DENG SHIQUN CHEN ZHIMING OU YANG ZHANG XIN |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: JINGXIN COMMUNICATION SYSTEM CO LTD (GUANGZHOU) Free format text: FORMER OWNER: COMBA TELECOM SYSTEMS (CHINA) CO., LTD. Effective date: 20150825 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20150825 Address after: 510663 Guangdong city of Guangzhou province Guangzhou economic and Technological Development Zone Jinbi Road No. 6 Patentee after: Comba Telecom Systems (Guangzhou) Co., Ltd. Address before: 510663 Guangzhou Science City, Guangdong Shenzhou Road, No. 10 Patentee before: Comba Telecom System (China) Co., Ltd. |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20170904 Address after: 510663 Shenzhou Road 10, Guangzhou Science City, Guangzhou economic and Technological Development Zone, Guangzhou, Guangdong Patentee after: Comba Telecom System (China) Co., Ltd. Address before: 510663 Guangdong city of Guangzhou province Guangzhou economic and Technological Development Zone Jinbi Road No. 6 Patentee before: Comba Telecom Systems (Guangzhou) Co., Ltd. |
|
| TR01 | Transfer of patent right | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 510663 Shenzhou Road 10, Guangzhou Science City, Guangzhou economic and Technological Development Zone, Guangzhou, Guangdong Patentee after: Jingxin Network System Co.,Ltd. Address before: 510663 Shenzhou Road 10, Guangzhou Science City, Guangzhou economic and Technological Development Zone, Guangzhou, Guangdong Patentee before: Comba Telecom System (China) Ltd. |