CN103916918A - Chain covering double-link mobile communication system and wave beam diversity and relay switching method - Google Patents
Chain covering double-link mobile communication system and wave beam diversity and relay switching method Download PDFInfo
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Abstract
The invention provides a link covering double-link mobile communication system and a wave beam diversity and relay switching method. The link covering double-link mobile communication system comprises a plurality of cells of a service area, wherein every two adjacent cells are partially overlapped, a base station is arranged inside each cell, a vehicle-mounted mobile station moving along with a vehicle at high speed is communicated with the base stations through a rail mobile communication network achieving link covering along a railway line, the vehicle-mounted mobile station comprises a combiner, a front wireless link and a rear wireless link, the front wireless link and the rear wireless link are arranged on the combiner and located at the two ends of a train, diversity is conducted on data received by the front wireless link and the rear wireless link, and then the data are transmitted to a service function unit. The system uses the double-link vehicle-mounted mobile station with a self-adaption antenna and a corresponding wave beam diversity and relay switching scheme, a relay switching process belongs to 'first connection and then interrupt' soft switching, and cell-crossing relay switching reliability is enhanced.
Description
Technical field
The present invention relates to Railway Mobile Radio technical field, be specifically related to a kind of chain and cover dual link mobile communication system and beam diversity and relay switching method.
Background technology
In the train control system (CTCS) of China, provide highly reliable car ground two-way wireless communication by Railway Mobile Radio system, what China railways adopted at present is integrated digital mobile communication GSM-R system, and the direction of development is the Railway Mobile Radio system (LTE-R) evolving to based on 3GPP.
No matter above-mentioned be GSM-R or LTE-R network, because it is subject to the restriction of set standard radio transmission technology and the requirement of system interference management, neighbor cell all can configure different radio frequency resourcess, therefore more district's baton handover is the direct-cut operation of realizing in a conventional manner, be that in hand-off execution process, travelling carriage first disconnects with being connected of former base station, rear foundation and being connected with target BS, inevitably there is handoff in such direct-cut operation, may cause transmission delay and loss of data.Simultaneously, because train in Railway Environment is in high-speed moving state, Doppler effect on car-ground radio link is particularly remarkable: in center of housing estate region, travelling carriage high-speed mobile is through near base station, and the signal from current base station that antenna is received can experience the saltus step of Doppler frequency shift fast; In overlay region, neighbor cell, mobile portable antennas can be received the enough strong signals from former base station and target BS, because being in cell edge, travelling carriage with train away from former base station near target BS, the opposite direction that relatively moves, two-way arriving signal Doppler frequency deviation approaches maximum and symbol is contrary.The execution of direct-cut operation need be served user's wireless link and be changed fast, and travelling carriage receives that the Doppler frequency shift rapid jumping of signal needs hypervelocity and Frequency Synchronization accurately.For the LTE network that adopts single frequency network (SFN), under low speed environments, originally can realize soft handover, but behind two poor significant paths of Doppler frequency deviation, at terminal antenna place, stack is equivalent to artificially introduce spread spectrum to neighbor cell signal, such propagation phenomenon can cause signal violent, fast, even spread spectrum of random frequency shift, cause receiving distorted signals, fail in time, the distortion meeting of accurately eliminating causes transmission performance to decline, especially concerning the LTE signal based on OFDM (OFDM), can cause between serious subcarrier and disturb, these phenomenons may cause the burst error of business and signaling data, even cause the even communication disruption of delay of critical data, for the traffic safety of train, very important hidden danger.
For the problems referred to above, industrial quarters and academia have in the major measure of taking aspect performance of handoffs and doppler phenomenon: for the optimization wireless coverage of performance of handoffs with meet railway special communication strict index, adopt special handoff algorithms to guarantee handover success rate and adopt selectivity to merge the dual link mode receiving and realize seamless switching etc.; The doppler phenomenon causing for high-speed mobile is mainly to pay close attention to quick Doppler correction algorithm.Switch or transmission performance although above-mentioned measure can improve respectively to a certain extent, because do not consider the impact of two aspects simultaneously, cause that applicability and the performance in the actual environment of train is still to be further improved.
Summary of the invention
In view of this, the invention provides and a kind of cover dual link mobile communication system and beam diversity and relay switching method for chain in railway (and highway, water transport etc.) communications and transportation environment, be retained to a rare link in the whole process of baton handover and keeping communication, realize the soft handover of " first connect afterwards and interrupt ", improve the transmission performance of switching, the fail safe that has improved train.
The technical solution used in the present invention is specially: a kind of chain covers dual link mobile communication system, comprise several communities of service area, between described adjacent community, partly overlap, in described each community, be provided with base station, the Railway Mobile Radio network covering by downline chain with the vehicle-mounted mobile platform of vehicles high-speed mobile and described base station communication, described vehicle-mounted mobile platform comprises the front end wireless link that lays respectively at train two ends and the rear end wireless link of combiner and outfit thereof, the spacing of the adaptive antenna of described front end wireless link and rear end wireless link is enough large, the data that described front end wireless link and rear end wireless link receive flow to described service functional unit after adopting merge algorithm merging to realize diversity from the reception signal of described two wireless links by described combiner.
Described front end wireless link and rear end wireless link include and are positioned at the link transmit-receive letter machine of railway car and are arranged on the adaptive antenna with wave beam forming function outside car, and described link transmit-receive letter machine and adaptive antenna are connected to form a double-direction radio transmission channel between car ground by running through the feeder line of train body.
Described merge algorithm is high specific merge algorithm, equal gain combining algorithm or requires to set voluntarily according to the self performance of train and complexity.The adaptive antenna of described front end wireless link and rear end wireless link is placed in respectively the initial and end two ends of train.
Described service area is the network of a large entirety or several regions of dividing according to geographical position, and multiple subnets are set up in described each region, and described each subnet comprises several communities.
A kind of chain covers the relay switching method of dual link mobile communication system, in the handoff procedure of each former community and adjacent Target cell, when vehicle-mounted mobile platform year, train Cong Yuan community was switched to adjacent Target cell, the base station of described Target cell is according to the traffic, service quality and in real time disturbed condition are the allocation of communications switching channels of described vehicle-mounted mobile platform, described vehicle-mounted mobile platform extracts correct channel position data from the demodulating data receiving, front end link first switches under normal circumstances, described vehicle-mounted mobile platform is along with the operation Cong Yuan community of train is switched to adjacent Target cell, in the time that described front end link is carried out unsuccessfully, described back end link first switches, and described vehicle-mounted mobile platform is along with the operation Cong Yuan community of train is switched to adjacent Target cell.
In the handoff procedure of each former community and adjacent Target cell, the process that described front end link first switches is divided into following three phases:
First stage: before baton handover, in the coverage of train overall operation Yu Yuan community, described front end link is connected with the base station of back end link Dou Yuyuan community, the front end adaptive antenna of front end link and the rear end self adaptation of back end link form respectively the optimum beam of current location separately, point to former base station;
Second stage, in baton handover process, the overlay region of train front end or train overall operation Yu Yuan community and Target cell, front end link first triggers and carries out switching, after the target BS successful connection of front end link and Target cell, front end adaptive antenna forms current location optimum beam, points to target BS, and the information including the message of handover success and the channel allocation parameter of Target cell is passed to back end link; In this process, back end link continues to keep being connected with former base station, and rear end adaptive antenna forms current location optimum beam, points to former base station;
Phase III, after baton handover, when front end link has successfully connected with target BS or until back end link handover trigger, back end link is directly transformed on the channel of distributing to front end link, rear end adaptive antenna forms current location optimum beam and is directed to target BS; Switched in the coverage that rear train runs on Target cell, described front end link is all connected with former base station with back end link, and front end adaptive antenna and rear end adaptive antenna form respectively current location optimum beam separately and point to target BS.
In the handoff procedure of each former community and adjacent Target cell, the process that baton handover first occurs described back end link is also divided into following three phases:
First stage, before baton handover, in the coverage of train operation Yu Yuan community, front end link is all connected with former base station with back end link, and front end adaptive antenna and rear end adaptive antenna form respectively current location optimum beam separately, point to former base station;
Second stage, in baton handover process, the overlay region of train front end or train overall operation Yu Yuan community and Target cell, if back end link is not until handover trigger is all received the message of front end link handover success and the channel allocation parameter information of Target cell, can independently switch, after handover success, back end link is connected to target BS, rear end adaptive antenna forms current location optimum beam, point to target BS, and the information including the channel allocation parameter of handover success message and Target cell is passed to front end link;
Phase III, after baton handover, train operation is in the coverage of Target cell, front end link is being received after the message and relevant information of back end link handover success, the directly channel of access target BS dispensing back end link, front end adaptive antenna forms current location optimum beam, is directed to target BS.
The process that described front end link or back end link first switch belongs to the soft handover of " first connect afterwards and interrupt ", and before baton handover, in baton handover process or after baton handover, any moment of three phases has at least a link to keep communication.
Chain covers a dual link deversity scheme for dual link mobile communication system, and other diversity transmission mode of data level comprises:
Before baton handover, the signal from former base station that the rear end transceiver of the front end transceiver of front end link and back end link is received front end adaptive antenna and rear end adaptive antenna is respectively processed, deliver to combiner, described combiner closes and realizes data and other diversity of signal level according to merge algorithm again;
After baton handover, the signal from target BS that front end transceiver and rear end transceiver are received front end adaptive antenna and rear end adaptive antenna is respectively processed, deliver to combiner, described combiner closes and realizes data and other diversity of signal level according to merge algorithm again;
Front end link first triggers, carries out in the process of switching and successfully connect with target BS, and back end link continues to be connected with the maintenance of former base station, and rear end adaptive antenna formation current location optimum beam, points to former base station; The signal from former base station and target BS that front end transceiver and rear end transceiver are received front end adaptive antenna and rear end adaptive antenna is respectively processed, deliver to combiner, described combiner closes and realizes data and other diversity of signal level according to merge algorithm again.
The beneficial effect that the present invention produces is: technology of the present invention takes full advantage of system and is conventionally chain wireless networking and the feature of radio wave take line-of-sight propagation as master, adopt the design of dual link vehicle-mounted mobile platform and corresponding beam diversity and the baton handover scheme of adaptive antenna, can improve the radio transmission performance between the vehicles and infrastructure in high-speed mobile environment, improve the reliability of Liao Yue district baton handover.
Accompanying drawing explanation
When considered in conjunction with the accompanying drawings, can more completely understand better the present invention.Accompanying drawing described herein is used to provide a further understanding of the present invention, and embodiment and explanation thereof are used for explaining the present invention, does not form inappropriate limitation of the present invention.
Fig. 1 is the structural representation that a kind of chain of the present invention covers dual link mobile communication system;
Fig. 2 is the structural representation that a kind of chain of the present invention covers the vehicle-mounted mobile platform of dual link mobile communication system;
Receive diversity schematic diagram when Fig. 3 (a)-(c) holds link first to switch for a kind of chain of the present invention covers before the relay switching method of dual link mobile communication system;
Receive diversity schematic diagram when the back end link that Fig. 4 (a)-(c) covers the relay switching method of dual link mobile communication system for a kind of chain of the present invention is first switched.
Embodiment
Below in conjunction with drawings and Examples, technical scheme of the present invention is described in further detail.
A kind of chain as shown in Figure 1-2 covers dual link mobile communication system, comprise outfit two wireless links of a vehicle-mounted mobile platform, every wireless links has respectively a transceiver and a pair to have the adaptive antenna of wave beam forming function, can form respectively the double-direction radio transmission channel between car ground.It is outer and at a distance of far away as far as possible that adaptive antenna A1 and A2 are arranged on roof, keeps forming current location optimum beam separately in communication process, and being connected to currently provides the base station of connection for it.The processing such as the signal that two transceiver T X1 and TX2 receive adaptive antenna A1 and A2 respectively carries out synchronously, equilibrium, demodulation, combiner C merges according to set algorithm and realizes diversity from the reception signal of two links, then sends service functional unit to.
Two-way receives signal and processes to realize signal rank or other diversity of data level (diversity) by combiner, improve the transmission performance of system, because the high speed mobile traffics such as train adopt the metal compartment of sealing conventionally, the wireless signal that directly imports envelope into is subject to 20dB and even more penetrates decay, therefore adaptive antenna is arranged on to car is outer and the parts such as vehicle-mounted mobile platform transceiver are positioned at compartment, both are connected with the feeder line that runs through car body, in facility condition allowed band, the spacing of two secondary adaptive antennas should be large as far as possible, as lay respectively at the head of train, tail two ends make the mutual interference of two link phases little, to the greatest extent little and handover trigger time of channel relevancy is separated by enough greatly.
Railway Mobile Radio network is chain along downline and covers, whole coverage can be a large network, or can be divided into several regions by Xian Jiang coverage, geographical position and set up multiple subnets, each subnet comprises several communities, between adjacent community, there is certain overlay region, as shown in Figure 1, vehicle-mounted mobile platform and each base station (BS1, BS2 ...) between wireless link access Railway Mobile Radio network, ①Shi Yuan community, 2. adjacent Target cell, ③Shi Yuan community 1. with overlay region 2., Target cell, the process that vehicle-mounted mobile Tai Congyuan community BS1 in is 1. switched to the BS2 of Target cell in is 2. the soft handover that adopts the baton handover of dual link adaptive beam, the traffic direction of given train, if the two ends of train are front end (front) and rear end (rear), two slave antennas of vehicle-mounted mobile platform are called front end adaptive antenna Af and rear end adaptive antenna Ar according to its installation site.Correspondingly, it receives signal and delivers to respectively front end transceiver TXf and rear end transceiver T Xr.Front end adaptive antenna Af and front end transceiver TXf form front end link, and rear end adaptive antenna Ar and rear end transceiver T Xr form back end link, and combiner C merges and realizes diversity from the reception signal of two links according to the merge algorithm of setting.
As shown in Fig. 3 (a)-(c), front end link can first switch as a rule, and 1. travelling carriage Cong Yuan community is switched to adjacent target community process 2. can be divided into three phases:
First stage is as shown in Fig. 3 (a), before baton handover occurs, in the coverage 1. of train operation Yu Yuan community, two links are all connected with former base station BS 1, and front end antenna Af and rear end antenna Ar form respectively current location optimum beam separately and point to former base station BS 1.The signal from former base station BS 1 that two transceiver T Xf and TXr receive front end antenna Af and rear end antenna Ar is respectively processed, then delivers to combiner C and close and realize diversity according to the merge algorithm of setting.
Second stage as shown in Figure 3 (b), in baton handover process, train front end or overall operation are in overlay region 3., front end link first triggers and carries out switching, after front end link and target BS BS2 successful connection, front end adaptive antenna Af forms current location optimum beam, points to target BS BS2, and the information such as handover success message and Target cell channel allocation parameter are passed to back end link.In this process, back end link continues to keep being connected with former base station BS 1, and rear end adaptive antenna Af forms current location optimum beam, points to former base station BS 1.The signal from former base station BS 1 and target BS BS2 that two transceiver T Xf and TXr receive front end antenna Af and rear end antenna Ar is respectively processed, then delivers to combiner C and close and realize diversity according to the merge algorithm of setting.
Phase III as shown in Figure 3 (c), when front end link successfully connects and keeps after the some time with target BS BS2, or until back end link handover trigger, back end link is directly transformed on the channel of distributing to front end link, and its antenna Ar forms current location optimum beam and is directed to target BS BS2.After having switched, train operation is in Target cell 2. in coverage, and two links are all connected with former base station BS 2, and front end antenna Af and rear end antenna Ar form respectively current location optimum beam separately, point to target BS BS2.The signal from target BS BS2 that two transceiver T Xf and TXr receive front end antenna Af and rear end antenna Ar is respectively processed, deliver to again combiner C and close and realize diversity according to the merge algorithm of setting, merge algorithm can be high specific, etc. the ripe merge algorithm such as gain or require to design according to the self performance of train and complexity.
In above-mentioned whole baton handover process, any moment all has at least a link to keep communication, it is the soft handover of " first connect afterwards and interrupt ", in data rank diversity, article two, the signal of link carries out respectively synchronously, equilibrium, demodulation, channel-decoding etc. process and recover after transmission data, then merge; In signal rank diversity, owing to adopting adaptive wave beam shaping technology, separable same antenna place approaches maximum and the contrary signal of symbol from the two-way Doppler frequency deviation of former cell base station and target cell base station.Therefore the signal of two links carries out respectively carrying out after the processing such as synchronous, balanced spatial coherence again equal gain combining or high specific merge, and also can avoid near the problem of Doppler frequency deviation saltus step aggravation base station that selective diversity can bring.
As shown in Fig. 4 (a)-(c), the in the situation that of minority front end link handoff failure, back end link is independently switched, and 1. vehicle-mounted mobile Tai Congyuan community is switched to adjacent target community process 2. also can be divided into three phases:
First stage as shown in Figure 4 (a), before baton handover occurs, train operation Yu Yuan community is 1. in coverage, and two links are all connected with former base station BS 1, and front end antenna Af and rear end antenna Ar form respectively current location optimum beam separately and point to former base station BS 1.The signal from former base station BS 1 that two transceiver T Xf and TXr receive front end adaptive antenna Af and rear end adaptive antenna Ar is respectively processed, then delivers to combiner C and close and realize diversity according to the merge algorithm of setting.
Second stage as shown in Figure 4 (b), in baton handover process, train operation in overlay region 3., front end link handover trigger or carry out unsuccessfully, fails successfully to connect with target BS BS2, with communicating by letter because weaken rapidly and interrupt away from, signal at a high speed of former base station BS 1.Back end link is not until handover trigger is all received front end link handover success message and relevant information, thereby independently switches.After handover success, back end link is connected to target BS BS2, and rear end antenna Ar forms current location optimum beam, points to target BS BS2, and the information such as handover success message and Target cell channel allocation parameter are passed to front end link.
Phase III, after back end link has been switched, train operation was in Target cell 2. in coverage as shown in Figure 4 (c).Front end link receiving after the message and relevant information of back end link handover success, directly accesses target BS BS2 and distribute to the channel of back end link, and its antenna Af forms current location optimum beam and is directed to target BS BS2.So far, two links are all connected with former base station BS 2, can restart to utilize dual link to realize diversity.
The above-mentioned description about wave beam baton handover and deversity scheme for be the situation of the down link of Frequency Division Duplexing (FDD) (FDD) pattern.For up link, in the time that train operation is inner in community, if two links use same channel, adopt suitable Space Time Coding mode to be easy to realize transmit diversity between vehicle-mounted mobile platform and Current Serving BTS; If system wireless abundant resource and system interference level allow, and can be two link assignment different channels, be more conducive to improve performance by diversity.
In baton handover process, realize the Combined Treatment of neighbor cell base station if having ready conditions, former cell base station and target cell base station can utilize two wireless links between travelling carriage to realize data level diversity, improve ul transmissions performance.For supporting dual link transmission, network side should be set up corresponding two contexts (context) in Mobility Management Entity (MME), Data dissemination in handoff procedure adopts bi-casting (bi-casting) strategy, in time the data of giving travelling carriage is distributed to former base station and target BS simultaneously.
As mentioned above, embodiments of the invention are explained, obviously, as long as do not depart from fact inventive point of the present invention and effect, the distortion that will be readily apparent to persons skilled in the art, within being all included in protection scope of the present invention yet.
Claims (10)
1. a chain covers dual link mobile communication system, it is characterized in that, comprise several communities of service area, between described adjacent community, partly overlap, in described each community, be provided with base station, the Railway Mobile Radio network covering by downline chain with the vehicle-mounted mobile platform of vehicles high-speed mobile and described base station communication, described vehicle-mounted mobile platform comprises the front end wireless link that lays respectively at train two ends and the rear end wireless link of combiner and outfit thereof, the spacing of the adaptive antenna of described front end wireless link and rear end wireless link is enough large, the data that described front end wireless link and rear end wireless link receive flow to described service functional unit after adopting merge algorithm merging to realize diversity from the reception signal of described two wireless links by described combiner.
2. a kind of chain according to claim 1 covers dual link mobile communication system, it is characterized in that, described front end wireless link and rear end wireless link include and are positioned at the link transmit-receive letter machine of railway car and are arranged on the adaptive antenna with wave beam forming function outside car, and described link transmit-receive letter machine and adaptive antenna are connected to form a double-direction radio transmission channel between car ground by running through the feeder line of train body.
3. a kind of chain according to claim 1 covers dual link mobile communication system, it is characterized in that, described merge algorithm is high specific merge algorithm, equal gain combining algorithm or requires to set voluntarily according to the self performance of train and complexity.
4. a kind of chain according to claim 1 covers dual link mobile communication system, it is characterized in that, the adaptive antenna of described front end wireless link and rear end wireless link is placed in respectively the initial and end two ends of train.
5. a kind of chain according to claim 1 covers dual link mobile communication system, it is characterized in that, described service area is the network of a large entirety or several regions of dividing according to geographical position, and multiple subnets are set up in described each region, and described each subnet comprises several communities.
6. the wave beam relay switching method of a chain covering dual link mobile communication system, it is characterized in that, in the handoff procedure of each former community and adjacent Target cell, when vehicle-mounted mobile platform year, train Cong Yuan community was switched to adjacent Target cell, the base station of described Target cell is according to the traffic, service quality and in real time disturbed condition are the allocation of communications switching channels of described vehicle-mounted mobile platform, described vehicle-mounted mobile platform extracts correct channel position data from the demodulating data receiving, front end link first switches under normal circumstances, described vehicle-mounted mobile platform is along with the operation Cong Yuan community of train is switched to adjacent Target cell, in the time that described front end link is carried out unsuccessfully, described back end link first switches, and described vehicle-mounted mobile platform is along with the operation Cong Yuan community of train is switched to adjacent Target cell.
7. a kind of chain according to claim 6 covers the wave beam relay switching method of dual link mobile communication system, it is characterized in that, in the handoff procedure of each former community and adjacent Target cell, the process that described front end link first switches is divided into following three phases:
First stage: before baton handover, in the coverage of train overall operation Yu Yuan community, described front end link is connected with the base station of back end link Dou Yuyuan community, the front end adaptive antenna of front end link and the rear end self adaptation of back end link form respectively the optimum beam of current location separately, point to former base station;
Second stage, in baton handover process, the overlay region of train front end or train overall operation Yu Yuan community and Target cell, front end link first triggers and carries out switching, after the target BS successful connection of front end link and Target cell, front end adaptive antenna forms current location optimum beam, points to target BS, and the information including the message of handover success and the channel allocation parameter of Target cell is passed to back end link; In this process, back end link continues to keep being connected with former base station, and rear end adaptive antenna forms current location optimum beam, points to former base station;
Phase III, after baton handover, when front end link has successfully connected with target BS or until back end link handover trigger, back end link is directly transformed on the channel of distributing to front end link, rear end adaptive antenna forms current location optimum beam and is directed to target BS; Switched in the coverage that rear train runs on Target cell, described front end link is all connected with former base station with back end link, and front end adaptive antenna and rear end adaptive antenna form respectively current location optimum beam separately and point to target BS.
8. a kind of chain according to claim 6 covers the wave beam relay switching method of dual link mobile communication system, it is characterized in that, in the handoff procedure of each former community and adjacent Target cell, the process that described back end link first switches is also divided into following three phases:
First stage, before baton handover, in the coverage of train operation Yu Yuan community, front end link is all connected with former base station with back end link, and front end adaptive antenna and rear end adaptive antenna form respectively current location optimum beam separately, point to former base station;
Second stage, in baton handover process, the overlay region of train front end or train overall operation Yu Yuan community and Target cell, if back end link is not until handover trigger is all received the message of front end link handover success and the channel allocation parameter information of Target cell, can independently switch, after handover success, back end link is connected to target BS, rear end adaptive antenna forms current location optimum beam, point to target BS, and the information including the channel allocation parameter of handover success message and Target cell is passed to front end link;
Phase III, after baton handover, train operation is in the coverage of Target cell, front end link is being received after the message and relevant information of back end link handover success, the directly channel of access target BS dispensing back end link, front end adaptive antenna forms current location optimum beam, is directed to target BS.
9. cover the wave beam relay switching method of dual link mobile communication system according to a kind of chain described in any one in claim 6-8, it is characterized in that, the process that described front end link or back end link first switch belongs to the soft handover of " first connect afterwards and interrupt ", and before baton handover, in baton handover process or after baton handover, any moment of three phases has at least a link to keep communication.
10. chain covers a beam diversity method for dual link mobile communication system, it is characterized in that, diversity transmission mode comprises:
Before baton handover, the signal from former base station that the rear end transceiver of the front end transceiver of front end link and back end link is received front end adaptive antenna and rear end adaptive antenna is respectively processed, deliver to combiner, described combiner closes and realizes data and other diversity of signal level according to the merge algorithm of setting again;
After baton handover, the signal from target BS that front end transceiver and rear end transceiver are received front end adaptive antenna and rear end adaptive antenna is respectively processed, deliver to combiner, described combiner closes and realizes data and other diversity of signal level according to set algorithm again;
Front end link first triggers, carries out in the process of switching and successfully connect with target BS, and back end link continues to be connected with the maintenance of former base station, and rear end adaptive antenna formation current location optimum beam, points to former base station; The signal from former base station and target BS that front end transceiver and rear end transceiver are received front end adaptive antenna and rear end adaptive antenna is respectively processed, deliver to combiner, described combiner closes and realizes data and other diversity of signal level according to set algorithm again.
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| CN108989979B (en) * | 2018-07-18 | 2021-01-15 | 成都吉纬科技有限公司 | Double-vehicle intersection switching method for millimeter wave communication of high-speed rail |
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| CN113067640A (en) * | 2021-03-30 | 2021-07-02 | 中国人民解放军战略支援部队信息工程大学 | Communication method and device across light areas |
| CN113115264A (en) * | 2021-04-08 | 2021-07-13 | 北京全路通信信号研究设计院集团有限公司 | Method, device, equipment and medium for transmitting train workshop data |
| EP3926844A1 (en) * | 2020-06-16 | 2021-12-22 | Blu Wireless Technology Ltd | Wireless communication for a vehicle based node |
| US11395193B2 (en) | 2017-12-18 | 2022-07-19 | Bluwireless Technology Limited | Wireless communication to a vehicle |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101771455A (en) * | 2010-01-08 | 2010-07-07 | 北京交通大学 | GSM-R communication module adopting double antenna diversity receiving technology |
| CN101888679A (en) * | 2010-05-31 | 2010-11-17 | 西南交通大学 | Multi-vehicle mounted station cooperation cell switching method for train-ground communication under high-speed moving environment |
| CN102387556A (en) * | 2011-10-18 | 2012-03-21 | 西南交通大学 | Inter-cell handover method of train-ground communication based on cooperative multipoint transmission in high-speed mobile environment |
| CN102413520A (en) * | 2011-09-29 | 2012-04-11 | 中国科学院计算技术研究所 | Switching method in long term evolution (LTE) communication system facing high speed railway and system thereof |
| CN102711199A (en) * | 2012-04-16 | 2012-10-03 | 上海交通大学 | Double-antenna handover system in GSM-R (global system for mobile communication for railway) network and method thereof |
| WO2013166640A1 (en) * | 2012-05-07 | 2013-11-14 | Telefonaktiebolaget L M Ericsson (Publ) | Communication apparatus and mobility method therefor |
-
2014
- 2014-03-07 CN CN201410083734.0A patent/CN103916918A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101771455A (en) * | 2010-01-08 | 2010-07-07 | 北京交通大学 | GSM-R communication module adopting double antenna diversity receiving technology |
| CN101888679A (en) * | 2010-05-31 | 2010-11-17 | 西南交通大学 | Multi-vehicle mounted station cooperation cell switching method for train-ground communication under high-speed moving environment |
| CN102413520A (en) * | 2011-09-29 | 2012-04-11 | 中国科学院计算技术研究所 | Switching method in long term evolution (LTE) communication system facing high speed railway and system thereof |
| CN102387556A (en) * | 2011-10-18 | 2012-03-21 | 西南交通大学 | Inter-cell handover method of train-ground communication based on cooperative multipoint transmission in high-speed mobile environment |
| CN102711199A (en) * | 2012-04-16 | 2012-10-03 | 上海交通大学 | Double-antenna handover system in GSM-R (global system for mobile communication for railway) network and method thereof |
| WO2013166640A1 (en) * | 2012-05-07 | 2013-11-14 | Telefonaktiebolaget L M Ericsson (Publ) | Communication apparatus and mobility method therefor |
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|---|---|---|---|---|
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| CN109155645A (en) * | 2016-05-27 | 2019-01-04 | Lg 电子株式会社 | The method and its equipment of distribution terminal identifier in distributed antenna communications system |
| CN109155645B (en) * | 2016-05-27 | 2021-05-28 | Lg 电子株式会社 | Method for allocating terminal identifier in distributed antenna communication system and apparatus therefor |
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| CN109565731A (en) * | 2016-08-03 | 2019-04-02 | 日本电气株式会社 | Equipment related with beam forming, method, system, program and recording medium |
| US11516711B2 (en) | 2016-08-03 | 2022-11-29 | Nec Corporation | Apparatus, method, system, program and recording medium related to beamforming |
| CN109845328A (en) * | 2016-10-13 | 2019-06-04 | 高通股份有限公司 | Communication beams soft handover |
| CN110999395B (en) * | 2017-08-10 | 2022-07-22 | 上海诺基亚贝尔股份有限公司 | Enhanced radio link monitoring for new radios |
| CN110999395A (en) * | 2017-08-10 | 2020-04-10 | 上海诺基亚贝尔股份有限公司 | Enhanced radio link monitoring for new radios |
| GB2569399A (en) * | 2017-12-18 | 2019-06-19 | Bluwireless Tech Ltd | Wireless communication to a vehicle |
| US11395193B2 (en) | 2017-12-18 | 2022-07-19 | Bluwireless Technology Limited | Wireless communication to a vehicle |
| CN112335289A (en) * | 2018-05-08 | 2021-02-05 | 诺基亚技术有限公司 | User equipment based handover |
| CN108901050B (en) * | 2018-07-16 | 2020-10-20 | 成都吉纬科技有限公司 | High-speed rail wireless communication switching method |
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| CN108989979B (en) * | 2018-07-18 | 2021-01-15 | 成都吉纬科技有限公司 | Double-vehicle intersection switching method for millimeter wave communication of high-speed rail |
| CN111479212A (en) * | 2019-01-23 | 2020-07-31 | 成都鼎桥通信技术有限公司 | Cell switching method and device |
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| CN111246429B (en) * | 2020-01-15 | 2022-08-26 | 北京锦鸿希电信息技术股份有限公司 | GSM-R handover switching method and device based on redundant network |
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