CN104717718B - A kind of high-speed rail train Wi-Fi hotspot communication control method and system - Google Patents
A kind of high-speed rail train Wi-Fi hotspot communication control method and system Download PDFInfo
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- CN104717718B CN104717718B CN201510149874.8A CN201510149874A CN104717718B CN 104717718 B CN104717718 B CN 104717718B CN 201510149874 A CN201510149874 A CN 201510149874A CN 104717718 B CN104717718 B CN 104717718B
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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
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Abstract
The present invention provides a kind of high-speed rail train Wi-Fi hotspot communication control methods, hot spot base station may not necessarily carry out the communication broadcast of the big bandwidth of high frequency constantly, it only needs to keep the low-power broadcast that bandwidth is sufficiently small and frequency is sufficiently low, it can be detected by the trunk module on high-speed rail train, then communication broadcast is just carried out, power is saved.Meanwhile data packet treatment process when this method specification switching hot spot base station, avoid the disorder of uplink and downlink data packet.
Description
Technical field
The present invention relates to wireless communication field more particularly to a kind of high-speed rail train Wi-Fi hotspot communication control method and it is
System.
Background technique
Continuous with WiFi (wireless fidelity) technology is popularized, other than traditional laptop, intelligence
Mobile phone, tablet computer, the even mobile radio terminals such as healthy bracelet, smartwatch and camera are all stablized at high speed to by WiFi
Accessing Internet, more stringent requirements are proposed.In many WiFi access environments, speed per hour is up to the high-speed rail column of 200km/h or more
Vehicle obviously has great particularity.As high-speed railway the swiftest and the most violent is developed in multiple transportation modes, at present only in China,
It formally puts into effect and the high-speed rail mileage of hot work in progress construction is up to 20,000 kilometers or more.High-speed rail train speed is fast, mileage is long,
Wireless access terminal is more, and highly dynamic access environment and scene change rate cause the communication efficiency of mobile terminal to decline, this
Great contradiction is formd with the access demand of mobile terminal intensive in compartment.
Current train Wi-Fi hotspot communication system, in access mesh portions by train communication system and land mobile communication system two
Part forms.Train communication system include be arranged in each compartment for wireless terminal access WiFi AM access module and with
The trunk module of the multiple WiFi AM access module connection.Land mobile communication system is by arrangement by above-mentioned trunk module and train rail
Hot spot base station composition, every suitable distance, arrange several hot spot base stations.Pass through wireless terminal-WiFi AM access module-relaying mould
Signalling exchange between block-hot spot base station reaches access.
However, since the speed of high-speed rail train is too fast, in order to keep communicating to connect, every the very short time, trunk module
The hot spot base station of its access will be switched, excessively frequent switching has seriously affected communication quality, especially in two hot spot bases
The overlapping region stood can generate the disorder that data packet sends and receives.Also, in order to guarantee communication quality, hot spot base station needs
Communication broadcast is persistently carried out, excessive power is consumed.
Summary of the invention
In order to overcome the problems of the above-mentioned prior art, the present invention provides a kind of communications of high-speed rail train Wi-Fi hotspot to control
Method processed, which is characterized in that arrange a hot spot base station every a distance along high-speed railway rail, each hot spot base station has low
Frequency broadcast transmission module, persistently emits broadcast singal by low frequency channel, carried in the broadcast singal instruction high-speed rail train from
Current location enters information of the current hotspot base station at a distance from the overlapping region of next hot spot base station, the high-speed rail train WiFi heat
Point communication control method the following steps are included:
S1, in face of the two adjacent current hotspot base stations and next hot spot base station on high-speed rail train direction of travel,
Current hotspot base station is the hot spot base station of current high-speed rail train trunk module access, and next hot spot base station is that high-speed rail train relays mould
The low frequency broadcast transmission module of the hot spot base station that block will access, next hot spot base station persistently emits broadcast letter by low frequency channel
Number, which has the characteristics that bandwidth is sufficiently small and frequency is sufficiently low, so that its broadcast coverage is greater than hot spot base station
Outdoor practical communication coverage area, high-speed rail train driving current hotspot base station communication coverage area z1, not yet enter work as
When the overlapping region z3 of the communication coverage area z1 of preceding hot spot base station and the communication coverage area z2 of next hot spot base station, so that it may
The broadcast singal is received, the instruction high-speed rail train carried in the broadcast singal enters the letter of the distance of region z3 from current location
In breath, setting the distance is k, and the communication covered radius of the broadcast singal covering radius sum of next hot spot base station is respectively R and r,
What next hot spot base station was measured in construction is d with the vertical range of high-speed railway rail, acquires k according to following formula:
Before its broadcast singal is received by the trunk module of any high-speed rail train, next hot spot base station is only by low frequency
Broadcast transmission module emits the broadcast singal, next after its broadcast singal is received by the trunk module of any high-speed rail train
Hot spot base station just carries out the communication broadcast of the big bandwidth of high frequency；
S2, the trunk module on high-speed rail train receive the broadcast of the low frequency broadcast transmission module transmitting of next hot spot base station
After signal, the travel speed v based on distance k and current high-speed rail train acquires high-speed rail train according to following formula and enters region z3
Time t:
T=k/v；
S3, according to the size of t, trunk module cannot will completely be up to the number of the business of current hotspot base station in time t
It according to packet sequencing, label and caches, will also receive but cannot be completely from the data of the business of current hotspot base station down in the t time
Packet sequencing, label simultaneously cache, also, the notification information of the size comprising time t is sent to current hotspot base station by trunk module,
Current hotspot base station according to the notification information, cannot will completely be gone downwards in the t time business of trunk module data packet sequencing,
Mark and cache, will also receive but in the t time cannot completely from the data packet sequencing of the business of trunk module uplink, label simultaneously
Caching；
After S4, time t, high-speed rail train enters region z3, and trunk module is executed from current hotspot base station to next hot spot base
The data packet of above-mentioned caching is passed through the X2 between current hotspot base station and next hot spot base station by the switching stood, current hotspot base station
Interface is sent to next hot spot base station in order, makes the uplink and downlink industry after switched between trunk module and next hot spot base station
Business will not interrupt re-transmission；
After trunk module disconnects the connection with current hotspot base station, if the low frequency broadcast transmission module of current hotspot base station
The broadcast singal of transmitting is not received by the trunk module of any high-speed rail train, and current hotspot base station will be without the big bandwidth of high frequency
Communication broadcast, emit the broadcast singal only by low frequency broadcast transmission module.
Further, above-mentioned high-speed rail train Wi-Fi hotspot communication control method, which is characterized in that trunk module is sentenced always
Break at a distance from the hot spot base station accessed at present, to control communications rate, used specific method is: communication is passed
Defeated rate divides 4 grades, respectively V1-V4 into, and V1-V4 transmission rate is incremented by successively, and trunk module is according to current hotspot base station under
Region locating for the low frequency broadcast singal and communication broadcast signal determining high-speed rail train of one hot spot Base Transmitter controls communications
Rate when trunk module receives the low frequency broadcast singal of next hot spot base station and communicated with current hotspot base station, uses
Transmission rate V2；When trunk module is in the region z3, using transmission rate V1；Trunk module still can receive previous work as
The low frequency broadcast singal of preceding hot spot base station and when being communicated with previous next hot spot base station, using transmission rate V3；Relaying
Module only can receive the low frequency broadcast singal of previous next hot spot base station and be communicated with previous next hot spot base station
When, using transmission rate V4.
In addition, being for implement above-mentioned high-speed rail train Wi-Fi hotspot communication control method the present invention also provides a kind of
System, which is characterized in that the system is made of train communication system and land mobile communication system two parts, and train communication system is included in
What is be arranged in each compartment connect for the WiFi AM access module of wireless terminal access and with the multiple WiFi AM access module
Trunk module；Land mobile communication system is made of the multiple hot spot base stations arranged by above-mentioned trunk module and train rail；High iron car
The wireless terminal of passenger accesses multiple WiFi AM access modules in compartment, and multiple WiFi AM access modules are connected to trunk module, relays mould
Block is connected to one in multiple hot spot base stations.
Further, the system of above-mentioned high-speed rail train Wi-Fi hotspot communication control method, which is characterized in that the relaying
Module includes: low frequency broadcasting reception module, the low frequency broadcast singal sent for receiving multiple hot spot base stations；Time calculates mould
Block, high-speed rail train for being carried in low frequency broadcast singal based on the received and current hotspot base station communication overlay area and next
High-speed rail train is calculated into required for the overlapping region in the distance of the overlapping region of hot spot base station communication overlay area
Time；The notification information of low frequency sending module, the size for the time required for will including is sent to next hot spot base station；Industry
Be engaged in control module, for by cannot be completely up in the required time business of current hotspot base station data packet sequencing,
Marking and caching will also receive but cannot be completely from the data packet of the business of current hotspot base station down in the required time
It sorts, mark and cache；Communications Rate control module, according to the low frequency of current hotspot base station and next hot spot Base Transmitter
Region locating for broadcast singal and communication broadcast signal determining high-speed rail train controls communications rate；Switching module, for holding
Switching between the hot spot base station that row trunk module is accessed.
Further, the system of above-mentioned high-speed rail train Wi-Fi hotspot communication control method, which is characterized in that the multiple
Hot spot base station all includes: low frequency broadcast transmission module, for emitting low frequency broadcast singal, carries height in the low frequency broadcast singal
When iron train receives the low frequency broadcast singal, covered with current hotspot base station communication overlay area and next hot spot base station communication
The information of the distance of the overlapping region in region；Distance calculation module, for calculating the distance and notifying low frequency broadcast module；It is low
Frequency receiving module, the notification information comprising the required time that the low frequency sending module for receiving trunk module is sent；Industry
Business shift module, for cannot will completely go downwards to the business of trunk module in the required time according to the notification information
Data packet sequencing, label simultaneously cache, and will also receive but cannot be completely from the business of trunk module uplink in the required time
Data packet sequencing, label and cache, and after the required time, the data packet of above-mentioned caching is passed through into current hotspot base
The X2 interface between next hot spot base station of standing is sent to next hot spot base station in order.
Detailed description of the invention
Fig. 1 is the schematic diagram that hot spot base station is arranged along high-speed railway rail.
Fig. 2 is the flow chart of high-speed rail train Wi-Fi hotspot communication control method.
Fig. 3 is the system block diagram for implementing high-speed rail train Wi-Fi hotspot communication control method.
Fig. 4 is the schematic block diagram of high-speed rail train trunk module.
Fig. 5 is the schematic block diagram of hot spot base station.
Specific embodiment
Below with reference to the embodiments and with reference to the accompanying drawing technical solution of the present invention is described in further detail.
As shown in Figure 1, a hot spot base station is arranged every appropriately distance along high-speed railway rail, due to specific geographical situation
It is had differences with surrounding enviroment, the outdoor practical communication coverage area of different hot spot base stations usually has differences, and every two adjacent
The distance between hot spot base station is not also identical.Hot spot base station 1 and 2, the practical communication overlay area difference of the two are shown in Fig. 1
For z1 and z2, the overlapping region of z1 and z2 are z3, and since the area of region z3 is significantly smaller than z1 and z2, high-speed rail train is entering area
The switching of hot spot base station accessed is begun to after the z3 of domain.In Fig. 1, high-speed rail train is currently just being travelled in the logical of hot spot base station 1
Believe overlay area z1, not yet enters the overlapping region z3 of z1 and z2.
Hot spot base station 1 and 2 all has low frequency broadcast transmission module, persistently emits broadcast singal by low frequency channel, this is wide
It broadcasts to carry in signal and indicates that high-speed rail train enters current hotspot base station and next hot spot base station overlapping region from current location
The information of distance.
As shown in Fig. 2, high-speed rail train Wi-Fi hotspot communication control method the following steps are included:
The low frequency broadcast transmission module of S1, hot spot base station 2 persistently emit broadcast singal by low frequency channel, the broadcast singal
Have the characteristics that bandwidth is sufficiently small and frequency is sufficiently low, so that its broadcast coverage is greater than the outdoor practical communication of hot spot base station
Coverage area.That is, the communication coverage area z1 of high-speed rail train driving in Fig. 1 in hot spot base station 1, not yet enter z1 and
When the overlapping region z3 of z2, so that it may receive the broadcast singal.Instruction high-speed rail train is carried in the broadcast singal from current
Position enters the information of the distance k of region z3, sets the communication covered radius point of the broadcast singal covering radius sum of hot spot base station 2
Not Wei R and r, what hot spot base station 2 was measured in construction is d with the vertical range of high-speed railway rail, k is acquired according to formula 1:
(formula 1).
Wherein, the value of R and r is not necessarily identical for different base stations, is also that can adjust for same base station
Whole, k here is calculated.When train receives broadcast singal, that is, enter R in the range of when, get started meter
It calculates, obtains k.
Before its broadcast singal is received by the trunk module of any high-speed rail train, hot spot base station 2 is wide only by low frequency
It broadcasts transmitting module and emits the broadcast singal；After its broadcast singal is received by the trunk module of any high-speed rail train, hot spot base
Stand 2 just carry out the big bandwidth of high frequency communication broadcast.
S2, the trunk module on high-speed rail train receive the broadcast letter of the low frequency broadcast transmission module transmitting of hot spot base station 2
After number, the travel speed v based on distance k and current high-speed rail train acquires the time that high-speed rail train enters region z3 according to formula 2
T:
T=k/v (formula 2).
S3, according to the size of t, trunk module cannot will completely be up to the data packet of the business of hot spot base station 1 in time t
Sort, mark and cache, will also receive but in the t time cannot completely from the data packet sequencing of the business of 1 downlink of hot spot base station,
It marks and caches.Also, the notification information of the size comprising time t is sent to heat by same low frequency channel by trunk module
Point base stations 1, hot spot base station 1 cannot will completely go downwards to the data packet of the business of trunk module according to the notification information in the t time
Sort, mark and cache, will also receive but in the t time cannot completely from the data packet sequencing of the business of trunk module uplink,
It marks and caches.
After S4, time t, high-speed rail train enters region z3, and trunk module executes cutting from hot spot base station 1 to hot spot base station 2
It changes.The data packet of above-mentioned caching is sent to hot spot base by the X2 interface between hot spot base station 1 and 2 by hot spot base station 1 in order
It stands 2, makes the uplink and downlink business after switching between trunk module and hot spot base station 2 that will not interrupt re-transmission.
After trunk module disconnects the connection with hot spot base station 1, if what the low frequency broadcast transmission module of hot spot base station 1 emitted
Broadcast singal is not received by the trunk module of any high-speed rail train, and hot spot base station 1 will be wide without the communication of the big bandwidth of high frequency
It broadcasts, emits the broadcast singal only by low frequency broadcast transmission module.
In addition, communication distance is shorter under higher communications rate due under high-speed rail train WiFi environment, it is lower logical
Believe that communication distance is longer under transmission rate, in high-speed rail train Wi-Fi hotspot communication control method of the invention, trunk module is always
Judgement is at a distance from the hot spot base station accessed at present, and to control communications rate, used specific method is: will communicate
Transmission rate divides 4 grades, respectively V1-V4 into, and V1-V4 transmission rate is incremented by successively.Trunk module is sent out according to hot spot base station 1 and 2
Region locating for the low frequency broadcast singal and communication broadcast signal determining high-speed rail train penetrated controls communications rate.Relay mould
When block receives the low frequency broadcast singal of hot spot base station 2 and communicated with hot spot base station 1, using transmission rate V2；Relay mould
When block is in region z3, using transmission rate V1；Trunk module still can receive the low frequency broadcast singal of hot spot base station 1 and with heat
When point base stations 2 are communicated, using transmission rate V3；Trunk module only can receive the low frequency broadcast singal of hot spot base station 2 and
When being communicated with hot spot base station 2, using transmission rate V4.
Using above-mentioned high-speed rail train Wi-Fi hotspot communication control method, hot spot base station may not necessarily carry out the big band of high frequency constantly
Wide communication broadcast, it is only necessary to keep the low-power broadcast that bandwidth is sufficiently small and frequency is sufficiently low, so that it may by high-speed rail train
Trunk module detect, then just carry out communication broadcast, save power.Meanwhile this method specification switching hot spot base station
When data packet treatment process, avoid the disorder of uplink and downlink data packet.
As shown in figure 3, implement the system of above-mentioned high-speed rail train Wi-Fi hotspot communication control method by train communication system and
Land mobile communication system two parts composition.Train communication system includes being arranged in each compartment for wireless terminal 301-305 etc.
WiFi AM access module 311-315 of access etc. and trunk module with the connections such as the multiple WiFi AM access module 311-315
321.Land mobile communication system is made of the hot spot base station 1-5 etc. arranged by above-mentioned trunk module 321 and train rail.High-iron carriage
Wireless terminal 301-305 of interior passenger etc. accesses multiple WiFi AM access module 311-315 etc., multiple WiFi AM access module 311-
315 etc. are connected to trunk module 321, and trunk module 321 is connected to one in multiple hot spot base station 1-5 etc..The system is used for
Execute above-mentioned high-speed rail train Wi-Fi hotspot communication control method.
As shown in figure 4, the trunk module 321 on high-speed rail train includes: low frequency broadcasting reception module 3211, for receiving figure
The low frequency broadcast singal of the transmissions such as hot spot base station 1-5 in 3；Time computing module 3212, for the broadcast letter of low frequency based on the received
The high-speed rail train carried in number and current hotspot base station communication overlay area and next hot spot base station communication overlay area it is overlapping
High-speed rail train is calculated into the time required for the overlapping region in the distance in region；Low frequency sending module 3213, is used for
The notification information of size comprising the required time is sent to next hot spot base station；Message control module 3214, being used for will
The data packet sequencing, label and caching that the business of current hotspot base station cannot be completely up in the required time will also connect
It receives but cannot completely from the data packet sequencing of the business of current hotspot base station down, label and be cached in the required time；It is logical
Transmission rate control module 3215 is believed, according to the low frequency broadcast singal and communication of current hotspot base station and next hot spot Base Transmitter
Broadcast singal determines region locating for high-speed rail train, controls communications rate；Switching module 3216, for executing trunk module
Switching between the hot spot base station accessed.
As shown in figure 5, hot spot base station 1-5 etc. includes: low frequency broadcast transmission module 11, for emitting low frequency broadcast letter
Number, when carrying high-speed rail train in the low frequency broadcast singal and receiving the low frequency broadcast singal, covered with current hotspot base station communication
The information of the distance of the overlapping region of cover area and next hot spot base station communication overlay area；Distance calculation module 12, based on
It calculates the distance and notifies low frequency broadcast module 11；Low frequency reception module 13, the low frequency for receiving trunk module 321 send mould
The notification information comprising the required time that block 3213 is sent；Business shift module 14 is used for according to the notification information, by institute
The data packet sequencing of the business of trunk module, label cannot completely be gone downwards in the time needed and cached, will also receive but
It cannot completely from the data packet sequencing of the business of trunk module uplink, label and be cached in the required time, and required
Time after, in order by X2 interface between current hotspot base station and next hot spot base station by the data packet of above-mentioned caching
It is sent to next hot spot base station.
Above embodiments are merely to illustrate the present invention, and not limitation of the present invention, the common skill in relation to technical field
Art personnel can also make a variety of changes and modification without departing from the spirit and scope of the present invention, therefore all etc.
Same technical solution also belongs to scope of the invention, and scope of patent protection of the invention should be defined by the claims.
Claims (5)
1. a kind of high-speed rail train Wi-Fi hotspot communication control method, which is characterized in that arranged along high-speed railway rail every a distance
One hot spot base station, each hot spot base station have low frequency broadcast transmission module, persistently emit broadcast singal by low frequency channel,
Instruction high-speed rail train is carried in the broadcast singal enters current hotspot base station and next hot spot base station overlay region from current location
The information of the distance in domain, the high-speed rail train Wi-Fi hotspot communication control method the following steps are included:
S1, in face of the two adjacent current hotspot base stations and next hot spot base station on high-speed rail train direction of travel, currently
Hot spot base station is the hot spot base station of current high-speed rail train trunk module access, and next hot spot base station is that high-speed rail train trunk module is
The low frequency broadcast transmission module of the hot spot base station of access, next hot spot base station is persistently emitted into broadcast singal by low frequency channel,
The broadcast singal has the characteristics that bandwidth is sufficiently small and frequency is sufficiently low, so that its broadcast coverage is greater than the family of hot spot base station
Outer practical communication coverage area, high-speed rail train driving not yet enter current heat in the communication coverage area z1 of current hotspot base station
When the overlapping region z3 of the communication coverage area z1 of point base stations and the communication coverage area z2 of next hot spot base station, so that it may receive
To the broadcast singal, the instruction high-speed rail train carried in the broadcast singal enters the information of the distance of region z3 from current location
In, setting the distance is k, and the communication covered radius of the broadcast singal covering radius sum of next hot spot base station is respectively R and r, under
What one hot spot base station was measured in construction is d with the vertical range of high-speed railway rail, acquires k according to following formula:
Before its broadcast singal is received by the trunk module of any high-speed rail train, next hot spot base station is broadcasted only by low frequency
Transmitting module emits the broadcast singal, after its broadcast singal is received by the trunk module of any high-speed rail train, next hot spot
Base station just carries out the communication broadcast of the big bandwidth of high frequency；
S2, the trunk module on high-speed rail train receive the broadcast singal of the low frequency broadcast transmission module transmitting of next hot spot base station
Afterwards, the travel speed v based on distance k and current high-speed rail train, according to following formula acquire high-speed rail train enter region z3 when
Between t:
T=k/v；
S3, according to the size of t, trunk module cannot will completely be up to the data packet of the business of current hotspot base station in time t
It sorts, mark and cache, will also receive but cannot completely be arranged from the data packet of the business of current hotspot base station down in the t time
Sequence, label simultaneously cache, also, the notification information of the size comprising time t is sent to current hotspot base station by trunk module, currently
Hot spot base station cannot will completely go downwards to data packet sequencing, the label of the business of trunk module according to the notification information in the t time
And cache, will also receive but in the t time cannot completely from the data packet sequencing of the business of trunk module uplink, mark and delay
It deposits；
After S4, time t, high-speed rail train enters region z3, and trunk module is executed from current hotspot base station to next hot spot base station
The data packet of above-mentioned caching is passed through the X2 interface between current hotspot base station and next hot spot base station by switching, current hotspot base station
It is sent to next hot spot base station in order, makes the uplink and downlink business after switched between trunk module and next hot spot base station not
It causes to interrupt and retransmit；
After trunk module disconnects the connection with current hotspot base station, if the low frequency broadcast transmission module of current hotspot base station emits
Broadcast singal do not received by the trunk module of any high-speed rail train, current hotspot base station will be without the logical of the big bandwidth of high frequency
Letter broadcast, emits the broadcast singal only by low frequency broadcast transmission module.
2. a kind of high-speed rail train Wi-Fi hotspot communication control method as described in claim 1, which is characterized in that trunk module begins
Judgement is at a distance from the hot spot base station accessed at present eventually, and to control communications rate, used specific method is: will lead to
Letter transmission rate divides 4 grades, respectively V1-V4 into, and V1-V4 transmission rate is incremented by successively, and trunk module is according to current hotspot base station
Region locating for low frequency broadcast singal and communication broadcast signal determining high-speed rail train with next hot spot Base Transmitter, control communication
Transmission rate, when trunk module receives the low frequency broadcast singal of next hot spot base station and is communicated with current hotspot base station,
Using transmission rate V2；When trunk module is in the region z3, using transmission rate V1；Trunk module still can receive previous
Current hotspot base station low frequency broadcast singal and when being communicated with previous next hot spot base station, using transmission rate V3；
Trunk module only can receive the low frequency broadcast singal of previous next hot spot base station and carry out with previous next hot spot base station
When communication, using transmission rate V4.
3. a kind of for implementing the high-speed rail train of high-speed rail train Wi-Fi hotspot communication control method as claimed in claim 1 or 2
Wi-Fi hotspot communication control system, which is characterized in that the system is made of train communication system and land mobile communication system two parts,
Train communication system include be arranged in each compartment for wireless terminal access WiFi AM access module and with it is multiple described
The trunk module of WiFi AM access module connection；Multiple heat that land mobile communication system is arranged by above-mentioned trunk module and train rail side
Point base stations composition；The wireless terminal of passenger accesses multiple WiFi AM access modules, multiple WiFi AM access module connections in high-iron carriage
To trunk module, trunk module is connected to one in multiple hot spot base stations.
4. a kind of high-speed rail train Wi-Fi hotspot communication control system as claimed in claim 3, which is characterized in that the relaying mould
Block includes: low frequency broadcasting reception module, the low frequency broadcast singal sent for receiving multiple hot spot base stations；Time computing module,
High-speed rail train and current hotspot base station communication overlay area and next heat for being carried in low frequency broadcast singal based on the received
The distance of the overlapping region of point base stations communication coverage area, when high-speed rail train is calculated into required for the overlapping region
Between；The notification information of low frequency sending module, the size for the time required for will including is sent to next hot spot base station；Business
Control module, for cannot will completely be up to data packet sequencing, the mark of the business of current hotspot base station in the required time
Remembering and caching will also receive but cannot completely arrange from the data packet of the business of current hotspot base station down in the required time
Sequence, label simultaneously cache；Communications Rate control module, the low frequency according to current hotspot base station and next hot spot Base Transmitter are wide
Region locating for signal and communication broadcast signal determining high-speed rail train is broadcast, communications rate is controlled；Switching module, for executing
Switching between the hot spot base station that trunk module is accessed.
5. a kind of high-speed rail train Wi-Fi hotspot communication control system as claimed in claim 3, which is characterized in that the multiple heat
Point base stations all include: low frequency broadcast transmission module, for emitting low frequency broadcast singal, carry high-speed rail in the low frequency broadcast singal
When train receives the low frequency broadcast singal, with current hotspot base station communication overlay area and next hot spot base station communication area of coverage
The information of the distance of the overlapping region in domain；Distance calculation module, for calculating the distance and notifying low frequency broadcast module；Low frequency
Receiving module, the notification information comprising the required time that the low frequency sending module for receiving trunk module is sent；Business
Shift module, for cannot will completely go downwards to the number of the business of trunk module in the required time according to the notification information
It according to packet sequencing, label and caches, will also receive but cannot be completely from the business of trunk module uplink in the required time
Data packet sequencing, label simultaneously cache, and after the required time, and the data packet of above-mentioned caching is passed through current hotspot base station
X2 interface between next hot spot base station is sent to next hot spot base station in order.
Priority Applications (1)
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| 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 |
| CN105516957B (en) * | 2015-11-30 | 2022-04-12 | 青岛海尔智能家电科技有限公司 | NAN network channel switching method and device |
| 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 |
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