CN104717718A - Method and system for controlling WiFi hotspot communication of high-speed train - Google Patents
Method and system for controlling WiFi hotspot communication of high-speed train Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/16—Discovering, processing access restriction or access information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
- H04W84/10—Small scale networks; Flat hierarchical networks
- H04W84/12—WLAN [Wireless Local Area Networks]
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The invention provides a method for controlling the WiFi hotspot communication of a high-speed train. According to the method, a hotspot base station can be detected by a relay module on the high-speed train by only keeping a low-power broadcast with a small enough bandwidth and a low enough frequency instead of constantly carrying out high-frequency and large-bandwidth communication broadcast, and then broadcast communication can be carried out, thus saving power. Meanwhile, the method normalizes a data packet processing process during handover for the hotspot base station, thus avoiding the turbulence of uplink and downlink data packets.
Description
Technical field
The present invention relates to wireless communication field, particularly relate to a kind of high ferro train Wi-Fi hotspot communication control method and system.
Background technology
Along with constantly popularizing of WiFi (wireless fidelity) technology, except traditional notebook computer, the mobile radio terminals such as smart mobile phone, panel computer, even healthy bracelet, intelligent watch and camera are all had higher requirement to by the stable Internet that accesses at high speed of WiFi.Access in environment at many WiFi, speed per hour obviously has great particularity up to the high ferro train of more than 200km/h.As developing high-speed railway the swiftest and the most violent in multiple transportation modes, at present only in China, formally to put into effect and the high ferro mileage of hot work in progress construction has reached more than 20,000 kilometers.High ferro train speed is fast, mileage is long, wireless access terminal is many, accesses environment and scene change speed highly dynamically and causes the communication efficiency of mobile terminal to decline, and the access demand of mobile terminal intensive in this and compartment defines great contradiction.
Current train Wi-Fi hotspot communication system, is made up of train communication system and land mobile communication system two parts in Access Network part.Train communication system is included in and often saves the WiFi access module for wireless terminal access arranged in compartment and the trunk module be connected with described multiple WiFi access module.Land mobile communication system is made up of above-mentioned trunk module and the other focus base station arranged of train rail, every suitable distance, arranges some focus base stations.Access is reached by the Signalling exchange between wireless terminal-WiFi access module-trunk module-focus base station.
But, because the speed of a motor vehicle of high ferro train is too fast, in order to keep communication connection, every the very short time, trunk module will switch the focus base station of its access, switch too frequently and had a strong impact on communication quality, especially in the overlapping region of two focus base stations, the disorder of Packet Generation and reception can be produced.Further, in order to ensure communication quality, focus base station needs to continue to carry out communication broadcast, consumes too much power.
Summary of the invention
In order to overcome the defect that above-mentioned prior art exists, the invention provides a kind of high ferro train Wi-Fi hotspot communication control method, it is characterized in that, a focus base station is arranged every a segment distance along high-speed railway rail, each focus base station has low frequency broadcast transmission module, continue to launch broadcast singal by low frequency channel, carry instruction high ferro train enters the distance of current hotspot base station and next overlapping region, focus base station information from current location in this broadcast singal, described high ferro train Wi-Fi hotspot communication control method comprises the following steps:
S1, for in face of the adjacent current hotspot base station of two on high ferro train direct of travel and next focus base station, current hotspot base station is the focus base station of current high ferro train trunk module access, next focus base station is the focus base station that high ferro train trunk module is about to access, the low frequency broadcast transmission module of next focus base station continues to launch broadcast singal by low frequency channel, this broadcast singal has the advantages that bandwidth is enough little and frequency is enough low, its broadcast coverage is made to be greater than the outdoor practical communication coverage of focus base station, high ferro train driving is at the communication coverage area z1 of current hotspot base station, when not yet entering the overlapping region z3 of the communication coverage area z1 of current hotspot base station and the communication coverage area z2 of next focus base station, just can receive this broadcast singal, the instruction high ferro train carried in this broadcast singal enters the information of the distance of region z3 from current location, set this distance as k, the broadcast singal covering radius of next focus base station and communication covered radius be respectively R and r, what next focus base station recorded when building is d with the vertical range of high-speed railway rail, k is tried to achieve according to following formula:
Before its broadcast singal is received by the trunk module of any high ferro train, this broadcast singal is launched only by low frequency broadcast transmission module in next focus base station, after its broadcast singal is received by the trunk module of any high ferro train, the communication broadcast of high frequency large bandwidth is just carried out in next focus base station;
S2, after the broadcast singal that the low frequency broadcast transmission module that the trunk module on high ferro train receives next focus base station is launched, based on the travel speed v of distance k and current high ferro train, tries to achieve according to following formula the time t that high ferro train enters region z3:
t＝k/v；
S3, according to the size of t, trunk module completely will can not be up to the data packet sequencing of the business of current hotspot base station in time t, mark is buffer memory also, also will to receive but can not the data packet sequencing of the complete business from current hotspot base station down in the t time, mark is buffer memory also, and, the announcement information of the size comprising time t is sent to current hotspot base station by trunk module, current hotspot base station is according to this announcement information, the data packet sequencing of the business of trunk module completely will can not be gone downwards in the t time, mark is buffer memory also, also will to receive but can not the data packet sequencing of the complete business up from trunk module in the t time, mark is buffer memory also,
S4, after time t, high ferro train enters region z3, trunk module performs from current hotspot base station to the switching of next focus base station, the packet of above-mentioned buffer memory is sent to next focus base station by the X2 interface between current hotspot base station and next focus base station by current hotspot base station in order, and the unlikely interruption of uplink and downlink business after making switching between trunk module and next focus base station retransmits;
After trunk module disconnects the connection with current hotspot base station, if the broadcast singal that the low frequency broadcast transmission module of current hotspot base station is launched is not received by the trunk module of any high ferro train, the communication broadcast of high frequency large bandwidth will not carried out in current hotspot base station, launches this broadcast singal only by low frequency broadcast transmission module.
Further, above-mentioned high ferro train Wi-Fi hotspot communication control method, it is characterized in that, trunk module judges the distance with the focus base station accessed at present all the time, to control communications speed, the concrete grammar adopted is: divide communications speed into 4 grades, be respectively V1-V4, V1-V4 transmission rate increases progressively successively, the region of trunk module residing for the low frequency broadcast singal of current hotspot base station and next focus Base Transmitter and communication broadcast signal determining high ferro train, control communications speed, when trunk module receives the low frequency broadcast singal of next focus base station and communicates with current hotspot base station, adopt transmission rate V2, when trunk module is in described region z3, adopt transmission rate V1, when trunk module still can receive the low frequency broadcast singal of previous current hotspot base station and communicate with next previous focus base station, adopt transmission rate V3, when trunk module only can receive the low frequency broadcast singal of next previous focus base station and communicate with next previous focus base station, adopt transmission rate V4.
In addition, present invention also offers a kind of system for implementing above-mentioned high ferro train Wi-Fi hotspot communication control method, it is characterized in that, this system is made up of train communication system and land mobile communication system two parts, and train communication system is included in and often saves the WiFi access module for wireless terminal access arranged in compartment and the trunk module be connected with described multiple WiFi access module; Land mobile communication system is made up of above-mentioned trunk module and the other multiple focus base stations arranged of train rail; In high-iron carriage, the wireless terminal of passenger accesses multiple WiFi access module, and multiple WiFi access module is connected to trunk module, and trunk module is connected to one in multiple focus base station.
Further, the system of above-mentioned high ferro train Wi-Fi hotspot communication control method, it is characterized in that, described trunk module comprises: low frequency broadcast reception module, for receiving the low frequency broadcast singal that multiple focus base station sends; Time Calculation module, for according to the high ferro train that carries in the low frequency broadcast singal received and the distance of current hotspot base station communication overlay area with the overlapping region of next focus base station communication overlay area, calculate high ferro train and enter time required for described overlapping region; Low frequency sending module, the announcement information for the size by the time comprised sends to next focus base station; Message control module, for by time in can not completely be up to the business of current hotspot base station data packet sequencing, mark and buffer memory also will receive but time in can not the complete business from current hotspot base station down data packet sequencing, mark and buffer memory; Communications Rate control module, according to the region residing for the low frequency broadcast singal of current hotspot base station and next focus Base Transmitter and communication broadcast signal determining high ferro train, controls communications speed; Handover module, for performing the switching between focus base station that trunk module accesses.
Further, the system of above-mentioned high ferro train Wi-Fi hotspot communication control method, it is characterized in that, described multiple focus base station all comprises: low frequency broadcast transmission module, for launching low frequency broadcast singal, high ferro train is carried when receiving this low frequency broadcast singal, with the information of the distance of the overlapping region of current hotspot base station communication overlay area and next focus base station communication overlay area in this low frequency broadcast singal; Distance calculation module, for calculating described distance and notifying low frequency broadcast module; Low frequency reception module, the announcement information of the time comprised that the low frequency sending module for receiving trunk module sends; Business shift module, for according to this announcement information, data packet sequencing, the mark also buffer memory of the business of trunk module completely will can not be gone downwards in the required time, also will receive but in the required time can not the complete business up from trunk module data packet sequencing, mark and buffer memory, and after the required time, the packet of above-mentioned buffer memory is sent to next focus base station in order by the X2 interface between current hotspot base station and next focus base station.
Accompanying drawing explanation
Fig. 1 is the schematic diagram arranging focus base station along high-speed railway rail.
Fig. 2 is the flow chart of high ferro train Wi-Fi hotspot communication control method.
Fig. 3 is the system block diagram implementing high ferro train Wi-Fi hotspot communication control method.
Fig. 4 is the schematic block diagram of high ferro train trunk module.
Fig. 5 is the schematic block diagram of focus base station.
Embodiment
Below by embodiment, and by reference to the accompanying drawings, technical scheme of the present invention is done more specifically bright.
As shown in Figure 1, a focus base station is arranged every suitable distance along high-speed railway rail, because concrete geographical situation and surrounding enviroment there are differences, the outdoor practical communication coverage of different focus base station there are differences usually, and the distance between every two adjacent heat point base stations is not identical yet.Focus base station 1 and 2 has been shown in Fig. 1, the practical communication overlay area of the two is respectively z1 and z2, the overlapping region of z1 and z2 is z3, and because the area of region z3 is significantly smaller than z1 and z2, high ferro train just starts the switching of the focus base station carrying out accessing after entering region z3.In Fig. 1, the current communication coverage area z1 just travelled in focus base station 1 of high ferro train, not yet enters the overlapping region z3 of z1 and z2.
Focus base station 1 and 2 all has low frequency broadcast transmission module, continues to launch broadcast singal by low frequency channel, carries instruction high ferro train enters the distance of current hotspot base station and next overlapping region, focus base station information from current location in this broadcast singal.
As shown in Figure 2, high ferro train Wi-Fi hotspot communication control method comprises the following steps:
S1, the low frequency broadcast transmission module of focus base station 2 continues to launch broadcast singal by low frequency channel, and this broadcast singal has the advantages that bandwidth is enough little and frequency is enough low, makes its broadcast coverage be greater than the outdoor practical communication coverage of focus base station.That is, the communication coverage area z1 of high ferro train driving in focus base station 1 in Fig. 1, when not yet entering the overlapping region z3 of z1 and z2, just can receive this broadcast singal.Instruction high ferro train enters the distance k of region z3 information from current location is carried in this broadcast singal, setting focus base station 2 broadcast singal covering radius and communication covered radius be respectively R and r, what focus base station 2 recorded when building is d with the vertical range of high-speed railway rail, tries to achieve k according to formula 1:
Wherein, the value of R with r is for not necessarily identical different base stations, and also can adjust for same base station, k here needs to calculate.When train receives broadcast singal, time in the scope namely entering R, get started calculating, obtain k.
Before its broadcast singal is received by the trunk module of any high ferro train, this broadcast singal is launched only by low frequency broadcast transmission module in focus base station 2; After its broadcast singal is received by the trunk module of any high ferro train, the communication broadcast of high frequency large bandwidth is just carried out in focus base station 2.
S2, after the broadcast singal that the low frequency broadcast transmission module that the trunk module on high ferro train receives focus base station 2 is launched, based on the travel speed v of distance k and current high ferro train, tries to achieve according to formula 2 the time t that high ferro train enters region z3:
T=k/v (formula 2).
S3, according to the size of t, trunk module will can not completely be up in time t the business of focus base station 1 data packet sequencing, mark and buffer memory, also will receive but in the t time can not the complete business descending from focus base station 1 data packet sequencing, mark and buffer memory.And, the announcement information comprising the size of time t is sent to focus base station 1 by same low frequency channel by trunk module, focus base station 1 is according to this announcement information, will can not completely go downwards in the t time business of trunk module data packet sequencing, mark and buffer memory, also will receive but in the t time can not the complete business up from trunk module data packet sequencing, mark and buffer memory.
S4, after time t, high ferro train enters region z3, and trunk module performs from focus base station 1 to the switching of focus base station 2.The packet of above-mentioned buffer memory is sent to focus base station 2 by the X2 interface between focus base station 1 and 2 by focus base station 1 in order, and the unlikely interruption of uplink and downlink business after making switching between trunk module and focus base station 2 retransmits.
After trunk module disconnects the connection with focus base station 1, if the broadcast singal that the low frequency broadcast transmission module of focus base station 1 is launched is not received by the trunk module of any high ferro train, the communication broadcast of high frequency large bandwidth will not carried out in focus base station 1, launches this broadcast singal only by low frequency broadcast transmission module.
In addition, due under high ferro train WiFi environment, under higher communications speed, communication distance is shorter, under lower communications speed, communication distance is longer, and in high ferro train Wi-Fi hotspot communication control method of the present invention, trunk module judges the distance with the focus base station accessed at present all the time, to control communications speed, the concrete grammar adopted is: divide communications speed into 4 grades, be respectively V1-V4, and V1-V4 transmission rate increases progressively successively.The low frequency broadcast singal that trunk module is launched according to focus base station 1 and 2 and the region residing for communication broadcast signal determining high ferro train, control communications speed.When trunk module receives the low frequency broadcast singal of focus base station 2 and communicates with focus base station 1, adopt transmission rate V2; When trunk module is in region z3, adopt transmission rate V1; When trunk module still can receive the low frequency broadcast singal of focus base station 1 and communicate with focus base station 2, adopt transmission rate V3; When trunk module only can receive the low frequency broadcast singal of focus base station 2 and communicate with focus base station 2, adopt transmission rate V4.
Adopt above-mentioned high ferro train Wi-Fi hotspot communication control method, focus base station can carry out the communication broadcast of high frequency large bandwidth constantly, only need to keep the low-power broadcast that bandwidth is enough little and frequency is enough low, just can be detected by the trunk module on high ferro train, then just carry out communication broadcast, save power.Meanwhile, the method specification switches processing data packets process during focus base station, avoids the disorder of up-downgoing packet.
As shown in Figure 3, the system implementing above-mentioned high ferro train Wi-Fi hotspot communication control method is made up of train communication system and land mobile communication system two parts.Train communication system is included in the trunk module 321 often saving the WiFi access module 311-315 accessed for wireless terminal 301-305 etc. that arranges in compartment etc. and be connected with described multiple WiFi access module 311-315 etc.Land mobile communication system is made up of above-mentioned trunk module 321 and the other focus base station 1-5 etc. arranged of train rail.The multiple WiFi access module 311-315 of the access such as wireless terminal 301-305 etc. of passenger in high-iron carriage, multiple WiFi access module 311-315 etc. are connected to trunk module 321, and trunk module 321 is connected to one in multiple focus base station 1-5 etc.This system is for performing above-mentioned high ferro train Wi-Fi hotspot communication control method.
As shown in Figure 4, the trunk module 321 on high ferro train comprises: low frequency broadcast reception module 3211, for receiving the low frequency broadcast singal that focus base station 1-5 in Fig. 3 etc. sends; Time Calculation module 3212, for according to the high ferro train that carries in the low frequency broadcast singal received and the distance of current hotspot base station communication overlay area with the overlapping region of next focus base station communication overlay area, calculate high ferro train and enter time required for described overlapping region; Low frequency sending module 3213, the announcement information for the size by the time comprised sends to next focus base station; Message control module 3214, for by time in can not completely be up to the business of current hotspot base station data packet sequencing, mark and buffer memory also will receive but time in can not the complete business from current hotspot base station down data packet sequencing, mark and buffer memory; Communications Rate control module 3215, according to the region residing for the low frequency broadcast singal of current hotspot base station and next focus Base Transmitter and communication broadcast signal determining high ferro train, controls communications speed; Handover module 3216, for performing the switching between focus base station that trunk module accesses.
As shown in Figure 5, focus base station 1-5 etc. comprises: low frequency broadcast transmission module 11, for launching low frequency broadcast singal, high ferro train is carried when receiving this low frequency broadcast singal, with the information of the distance of the overlapping region of current hotspot base station communication overlay area and next focus base station communication overlay area in this low frequency broadcast singal; Distance calculation module 12, for calculating described distance and notifying low frequency broadcast module 11; Low frequency reception module 13, the announcement information of the time comprised that the low frequency sending module 3213 for receiving trunk module 321 sends; Business shift module 14, for according to this announcement information, data packet sequencing, the mark also buffer memory of the business of trunk module completely will can not be gone downwards in the required time, also will receive but in the required time can not the complete business up from trunk module data packet sequencing, mark and buffer memory, and after the required time, the packet of above-mentioned buffer memory is sent to next focus base station in order by the X2 interface between current hotspot base station and next focus base station.
Above embodiment is only for illustration of the present invention; and be not limitation of the present invention; the those of ordinary skill of relevant technical field; without departing from the spirit and scope of the present invention; can also make a variety of changes and modification; therefore all equivalent technical schemes also belong to category of the present invention, and scope of patent protection of the present invention should be defined by the claims.
Claims (5)
1. a high ferro train Wi-Fi hotspot communication control method, it is characterized in that, a focus base station is arranged every a segment distance along high-speed railway rail, each focus base station has low frequency broadcast transmission module, continue to launch broadcast singal by low frequency channel, carry instruction high ferro train enters the distance of current hotspot base station and next overlapping region, focus base station information from current location in this broadcast singal, described high ferro train Wi-Fi hotspot communication control method comprises the following steps:
S1, for in face of the adjacent current hotspot base station of two on high ferro train direct of travel and next focus base station, current hotspot base station is the focus base station of current high ferro train trunk module access, next focus base station is the focus base station that high ferro train trunk module is about to access, the low frequency broadcast transmission module of next focus base station continues to launch broadcast singal by low frequency channel, this broadcast singal has the advantages that bandwidth is enough little and frequency is enough low, its broadcast coverage is made to be greater than the outdoor practical communication coverage of focus base station, high ferro train driving is at the communication coverage area z1 of current hotspot base station, when not yet entering the overlapping region z3 of the communication coverage area z1 of current hotspot base station and the communication coverage area z2 of next focus base station, just can receive this broadcast singal, the instruction high ferro train carried in this broadcast singal enters the information of the distance of region z3 from current location, set this distance as k, the broadcast singal covering radius of next focus base station and communication covered radius be respectively R and r, what next focus base station recorded when building is d with the vertical range of high-speed railway rail, k is tried to achieve according to following formula:
Before its broadcast singal is received by the trunk module of any high ferro train, this broadcast singal is launched only by low frequency broadcast transmission module in next focus base station, after its broadcast singal is received by the trunk module of any high ferro train, the communication broadcast of high frequency large bandwidth is just carried out in next focus base station;
S2, after the broadcast singal that the low frequency broadcast transmission module that the trunk module on high ferro train receives next focus base station is launched, based on the travel speed v of distance k and current high ferro train, tries to achieve according to following formula the time t that high ferro train enters region z3:
t＝k/v；
S3, according to the size of t, trunk module completely will can not be up to the data packet sequencing of the business of current hotspot base station in time t, mark is buffer memory also, also will to receive but can not the data packet sequencing of the complete business from current hotspot base station down in the t time, mark is buffer memory also, and, the announcement information of the size comprising time t is sent to current hotspot base station by trunk module, current hotspot base station is according to this announcement information, the data packet sequencing of the business of trunk module completely will can not be gone downwards in the t time, mark is buffer memory also, also will to receive but can not the data packet sequencing of the complete business up from trunk module in the t time, mark is buffer memory also,
S4, after time t, high ferro train enters region z3, trunk module performs from current hotspot base station to the switching of next focus base station, the packet of above-mentioned buffer memory is sent to next focus base station by the X2 interface between current hotspot base station and next focus base station by current hotspot base station in order, and the unlikely interruption of uplink and downlink business after making switching between trunk module and next focus base station retransmits;
After trunk module disconnects the connection with current hotspot base station, if the broadcast singal that the low frequency broadcast transmission module of current hotspot base station is launched is not received by the trunk module of any high ferro train, the communication broadcast of high frequency large bandwidth will not carried out in current hotspot base station, launches this broadcast singal only by low frequency broadcast transmission module.
2. a high ferro train Wi-Fi hotspot communication control method as claimed in claim 1, it is characterized in that, trunk module judges the distance with the focus base station accessed at present all the time, to control communications speed, the concrete grammar adopted is: divide communications speed into 4 grades, be respectively V1-V4, V1-V4 transmission rate increases progressively successively, the region of trunk module residing for the low frequency broadcast singal of current hotspot base station and next focus Base Transmitter and communication broadcast signal determining high ferro train, control communications speed, when trunk module receives the low frequency broadcast singal of next focus base station and communicates with current hotspot base station, adopt transmission rate V2, when trunk module is in described region z3, adopt transmission rate V1, when trunk module still can receive the low frequency broadcast singal of previous current hotspot base station and communicate with next previous focus base station, adopt transmission rate V3, when trunk module only can receive the low frequency broadcast singal of next previous focus base station and communicate with next previous focus base station, adopt transmission rate V4.
3. one kind for implementing the system of the high ferro train Wi-Fi hotspot communication control method as described in claim 1-2, it is characterized in that, this system is made up of train communication system and land mobile communication system two parts, and train communication system is included in and often saves the WiFi access module for wireless terminal access arranged in compartment and the trunk module be connected with described multiple WiFi access module; Land mobile communication system is made up of above-mentioned trunk module and the other multiple focus base stations arranged of train rail; In high-iron carriage, the wireless terminal of passenger accesses multiple WiFi access module, and multiple WiFi access module is connected to trunk module, and trunk module is connected to one in multiple focus base station.
4. one kind as claimed in claim 3 for implementing the system of the high ferro train Wi-Fi hotspot communication control method as described in claim 1-2, it is characterized in that, described trunk module comprises: low frequency broadcast reception module, for receiving the low frequency broadcast singal that multiple focus base station sends; Time Calculation module, for according to the high ferro train that carries in the low frequency broadcast singal received and the distance of current hotspot base station communication overlay area with the overlapping region of next focus base station communication overlay area, calculate high ferro train and enter time required for described overlapping region; Low frequency sending module, the announcement information for the size by the time comprised sends to next focus base station; Message control module, for by time in can not completely be up to the business of current hotspot base station data packet sequencing, mark and buffer memory also will receive but time in can not the complete business from current hotspot base station down data packet sequencing, mark and buffer memory; Communications Rate control module, according to the region residing for the low frequency broadcast singal of current hotspot base station and next focus Base Transmitter and communication broadcast signal determining high ferro train, controls communications speed; Handover module, for performing the switching between focus base station that trunk module accesses.
5. one kind as claimed in claim 3 for implementing the system of the high ferro train Wi-Fi hotspot communication control method as described in claim 1-2, it is characterized in that, described multiple focus base station all comprises: low frequency broadcast transmission module, for launching low frequency broadcast singal, high ferro train is carried when receiving this low frequency broadcast singal, with the information of the distance of the overlapping region of current hotspot base station communication overlay area and next focus base station communication overlay area in this low frequency broadcast singal; Distance calculation module, for calculating described distance and notifying low frequency broadcast module; Low frequency reception module, the announcement information of the time comprised that the low frequency sending module for receiving trunk module sends; Business shift module, for according to this announcement information, data packet sequencing, the mark also buffer memory of the business of trunk module completely will can not be gone downwards in the required time, also will receive but in the required time can not the complete business up from trunk module data packet sequencing, mark and buffer memory, and after the required time, the packet of above-mentioned buffer memory is sent to next focus base station in order by the X2 interface between current hotspot base station and next focus base station.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105516957A (en) * | 2015-11-30 | 2016-04-20 | 青岛海尔智能家电科技有限公司 | Method and device for switching NAN (Neighbor Awareness Network) network channels |
| CN107926030A (en) * | 2015-08-24 | 2018-04-17 | Lg电子株式会社 | The method and the terminal using this method of terminals in wireless communication systems transmitting-receiving V2X signals |
| CN113401174A (en) * | 2021-06-29 | 2021-09-17 | 通号城市轨道交通技术有限公司 | Train operation control method and device based on low-frequency communication |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1868169A (en) * | 2003-10-09 | 2006-11-22 | 松下电器产业株式会社 | Radio transmission system for high-speed mobile unit |
| EP0726689B1 (en) * | 1995-02-11 | 2008-06-04 | Alcatel Lucent | Mobile radio-communication system and hand-off method |
| CN102300279A (en) * | 2011-08-03 | 2011-12-28 | 北京交通大学 | Switching method based on carrier wave aggregation in high speed mobile environment |
| CN103024841A (en) * | 2013-01-05 | 2013-04-03 | 浙江大学 | Position information and receiving beam forming based intelligent switching method for high-speed train communication system |
| CN103095410A (en) * | 2013-01-09 | 2013-05-08 | 西南交通大学 | Rail communication error control method |
-
2015
- 2015-03-31 CN CN201510149874.8A patent/CN104717718B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0726689B1 (en) * | 1995-02-11 | 2008-06-04 | Alcatel Lucent | Mobile radio-communication system and hand-off method |
| CN1868169A (en) * | 2003-10-09 | 2006-11-22 | 松下电器产业株式会社 | Radio transmission system for high-speed mobile unit |
| CN102300279A (en) * | 2011-08-03 | 2011-12-28 | 北京交通大学 | Switching method based on carrier wave aggregation in high speed mobile environment |
| CN103024841A (en) * | 2013-01-05 | 2013-04-03 | 浙江大学 | Position information and receiving beam forming based intelligent switching method for high-speed train communication system |
| CN103095410A (en) * | 2013-01-09 | 2013-05-08 | 西南交通大学 | Rail communication error control method |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107926030A (en) * | 2015-08-24 | 2018-04-17 | Lg电子株式会社 | The method and the terminal using this method of terminals in wireless communication systems transmitting-receiving V2X signals |
| US10750512B2 (en) | 2015-08-24 | 2020-08-18 | Lg Electronics Inc. | Method for transreceiving V2X signal of terminal in wireless communication system, and terminal using the method |
| CN107926030B (en) * | 2015-08-24 | 2021-06-04 | Lg电子株式会社 | Method for terminal to transceive V2X signal in wireless communication system and terminal using the same |
| CN105516957A (en) * | 2015-11-30 | 2016-04-20 | 青岛海尔智能家电科技有限公司 | Method and device for switching NAN (Neighbor Awareness Network) network channels |
| CN113401174A (en) * | 2021-06-29 | 2021-09-17 | 通号城市轨道交通技术有限公司 | Train operation control method and device based on low-frequency communication |
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