CN107205252B - A kind of method and system of rail traffic link switching - Google Patents
A kind of method and system of rail traffic link switching Download PDFInfo
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- CN107205252B CN107205252B CN201710310731.XA CN201710310731A CN107205252B CN 107205252 B CN107205252 B CN 107205252B CN 201710310731 A CN201710310731 A CN 201710310731A CN 107205252 B CN107205252 B CN 107205252B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/08—Reselecting an access point
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
- H04B5/20—Near-field transmission systems, e.g. inductive or capacitive transmission systems characterised by the transmission technique; characterised by the transmission medium
- H04B5/28—Near-field transmission systems, e.g. inductive or capacitive transmission systems characterised by the transmission technique; characterised by the transmission medium using the near field of leaky cables, e.g. of leaky coaxial cables
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Abstract
The embodiment of the invention provides a kind of rail traffic link switch-over method and systems, applied on vehicle-mounted access point AP, the first link is established between the vehicle-mounted access point AP and waveguide, wherein, the waveguide receives the first track AP in a closed manner and sends wireless signal, and the wireless signal that the first track AP is sent is transmitted to the vehicle-mounted access point AP in a manner of revealing, it include: when determining that the vehicle-mounted access point AP detects that the second track AP sends wireless signal, the second link is established between the vehicle-mounted access point AP and waveguide, wherein, the waveguide receives the wireless signal of the second track AP transmission in a closed manner, and the wireless signal that the second track AP is sent is transmitted to the vehicle-mounted access point AP in a manner of revealing；By the communication between vehicle-mounted access point AP and waveguide by first link switching to second link.Improve the stability of rail traffic link.
Description
Technical field
The present invention relates to field of communication technology more particularly to a kind of method and systems of rail traffic link switching.
Background technique
It is as shown in Fig. 1 in current track traffic system, Radio Link is established by wireless bridge, passenger is by mobile phone, PAD
After the wireless signal in equal handheld terminals connection compartment, it can surf the web.The access of station sub-control system interchanger
Internet, vehicle-mounted AP and track AP establish Radio Link by wireless bridge, and passenger can pass through on such train
Radio Link is surfed the Internet；
A kind of method in the prior art are as follows: referring specifically to patent " a kind of link switch-over method and device ", application No. is:
201510178744.7, applied on the vehicle-mounted access point AP in wireless grid Mesh network, the vehicle-mounted AP with class signal
Type is that the first trackside AP of waveguide signal establishes the first link, this method comprises: when detecting that signal type is signal of eating dishes without rice or wine
When the second trackside AP, the second link is established with the second trackside AP；It calculates between the vehicle-mounted AP and the second trackside AP
Signal transmit duration；Duration is transmitted from first link switching to second link according to the signal.
It is above-mentioned in the prior art the shortcomings that are as follows: above-mentioned patent use mesh networking, track AP and vehicle-mounted AP are ap modes,
It can only be that an actual radio frequency mouth of vehicle-mounted AP is right in this way using the reciprocity management framework protocol realization of 802.11s protocol definition
The signal source for answering a track AP compares in signal distribution and is limited to；
Above-mentioned patent establishes main/slave link using waveguide and free space intersection, and waveguide signal is primary link, letter of eating dishes without rice or wine
Number be backup link；To eat dishes without rice or wine as backup link due between subway and track, because wanting process of passing through tunnel, overhead along subway
These tracks AP signal in orbit is disposed with the reasons such as environment and deployment scheme, signal in the different place such as bridge, ground
Difference is very big, causes the Radio Link waveguide between vehicle-mounted AP and track AP very big, since backup link is using letter of eating dishes without rice or wine
Number, can still there be the problems such as multipath, reflection, signal decaying in tunnel, so once switching backup link is easy swinging of signal
It is fixed；In addition being easy to change when signal is cut leads to packet loss, cutout: during train driving, vehicle-mounted AP detects current associated track
When AP signal weakens, by radio roaming principle, it is switched on the high track AP of signal, in this process, because will be again
Association, so will lead to loss of data in association process.
Summary of the invention
The embodiment provides a kind of rail traffic link switch-over method and system, concrete scheme are as follows: a kind of
Rail traffic link switch-over method is applied on vehicle-mounted access point AP, and the is established between the vehicle-mounted access point AP and waveguide
One link is communicated, wherein the waveguide receives the first track AP in a closed manner and sends wireless signal, and with leakage side
Formula transmits the wireless signal that the first track AP is sent to the vehicle-mounted access point AP characterized by comprising
When determining that the vehicle-mounted access point AP detects that the second track AP sends wireless signal, the vehicle-mounted access point AP
The second link is established between waveguide to be communicated,
Wherein, the waveguide receive in a closed manner the second track AP transmission wireless signal, and in a manner of revealing to
The vehicle-mounted access point AP transmits the wireless signal that the second track AP is sent, wherein the second track AP is described the
One track AP adjacent next track AP；
By the communication between vehicle-mounted access point AP and waveguide by first link switching to second link.
According to the above method of the present invention, the waveguide receives the first track AP in a closed manner and sends wireless signal,
And the waveguide receives the second track AP in a closed manner and sends wireless signal, comprising:
The waveguide is made of n root waveguide pipeline section, between adjacent two waveguide pipeline sections with it is overlapped staggeredly be connected
Closing mode connects, wherein with the first track AP and the second track AP apart from nearest waveguide in the n root waveguide pipeline section
Pipeline section receives the wireless signal that the first track AP is sent in a closed manner or receives the nothing that the second track AP is sent
Line signal.
According to the above method of the present invention, the waveguide is in a manner of revealing to the vehicle-mounted access point AP transmitting described the
The wireless signal and the waveguide that one track AP is sent are in a manner of revealing to the vehicle-mounted access point AP transmitting described second
The wireless signal that track AP is sent, comprising:
The waveguide is made of n root waveguide pipeline section, between adjacent two waveguide pipeline sections with it is overlapped staggeredly be connected
Closing mode connects, with the first track AP and the second track AP apart from nearest waveguide pipeline section in the n root waveguide pipeline section
On transmit the wireless signal that the first track AP is sent to the vehicle-mounted access point AP in a manner of the leakage for opening up hole, with
And the mode of the leakage of hole is opened up on the waveguide and transmits what the second track AP was sent to the vehicle-mounted access point AP
Wireless signal.
According to the above method of the present invention, further includes:
The actual radio frequency port of vehicle-mounted access point AP is mapped out into n virtual radiofiequency port respectively in advance, n be more than or equal to
2 positive integer；By virtual radiofiequency port respectively with the first track AP signal or second rail that are transmitted on waveguide
The signal source of road AP signal is associated respectively；
Wherein, the actual radio frequency port is shared by the n virtual radiofiequency port that actual radio frequency port mapping goes out and carries out nothing
Line data transmit-receive.
According to the above method of the present invention, it is described by virtual radiofiequency port respectively with transmitted on waveguide described first
The signal source of track AP signal or the second track AP signal is associated respectively, comprising:
When establishing the first link between the vehicle-mounted access point AP and waveguide, by the first virtual radiofiequency port with it is described
The signal source of first track AP signal is associated, and is established first link and is communicated,
Second virtual radiofiequency port and the signal source of the second track AP signal are associated, establish backup link not
It is communicated,
When determining that the vehicle-mounted access point AP detects that the second track AP sends wireless signal, the backup link is enabled
For second link.
According to the above method of the present invention, described when the determining vehicle-mounted access point AP detects that the second track AP sends nothing
Line signal includes:
When vehicle-mounted access point AP at a distance from the second track AP less than the vehicle-mounted access point AP and the first track AP away from
From when, determine the vehicle-mounted access point AP detect the second track AP send wireless signal.
According to another aspect of the present invention, a kind of rail traffic link switching system is also provided, vehicle-mounted access point is applied to
On AP, comprising:
Establish module: it is used to making to establish the first link between the vehicle-mounted access point AP and waveguide and be communicated,
In, the waveguide receives the first track AP in a closed manner and sends wireless signal, and to the vehicle-mounted access in a manner of revealing
Point AP transmits the wireless signal that the first track AP is sent；
When determining that the vehicle-mounted access point AP detects that the second track AP sends wireless signal, the vehicle-mounted access point AP
It establishes the second link between waveguide to be communicated, wherein the waveguide receives the second track AP transmission in a closed manner
Wireless signal, and transmit the wireless signal that the second track AP is sent to the vehicle-mounted access point AP in a manner of revealing；
Switching module: it is used for the communication between vehicle-mounted access point AP and waveguide by first link switching to institute
State the second link.
According to another aspect of the present invention, the waveguide is made of n root waveguide pipeline section, between adjacent two waveguide pipeline sections
It is connected in a manner of the overlapped closing being staggeredly connected, the module of establishing is specifically used for:
Make in the n root waveguide pipeline section with the first track AP and the second track AP apart from nearest waveguide pipeline section to seal
The mode of closing receives the wireless signal that the first track AP is sent or receives the wireless signal that the second track AP is sent.
According to another aspect of the present invention, the waveguide is made of n root waveguide pipeline section, between adjacent two waveguide pipeline sections
Connected in a manner of overlapped staggeredly connected closing, it is described establish module also particularly useful for: make in the n root waveguide pipeline section with
The first track AP and the second track AP is on nearest waveguide pipeline section to the vehicle in a manner of the leakage for opening up hole
It carries access point AP and transmits the side for opening up the leakage of hole on the wireless signal and the waveguide that the first track AP is sent
Formula transmits the wireless signal that the second track AP is sent to the vehicle-mounted access point AP.
According to another aspect of the present invention, further includes: mapping block:
It is used to that the actual radio frequency port of vehicle-mounted access point AP to be mapped out n virtual radiofiequency port respectively in advance, and n is big
In the positive integer for being equal to 2；By virtual radiofiequency port respectively with the first track AP signal for being transmitted on waveguide or described
The signal source of second track AP signal is associated respectively；
Wherein, the actual radio frequency port is shared by the n virtual radiofiequency port that actual radio frequency port mapping goes out and carries out nothing
Line data transmit-receive；
It is described establish module also particularly useful for:
When establishing the first link between the vehicle-mounted access point AP and waveguide, by the first virtual radiofiequency port with it is described
The signal source of first track AP signal is associated, and is established first link and is communicated,
Second virtual radiofiequency port and the signal source of the second track AP signal are associated, establish backup link not
It is communicated,
When determining that the vehicle-mounted access point AP detects that the second track AP sends wireless signal, the backup link is enabled
For second link.
According to another aspect of the present invention, it is described establish module also particularly useful for: when vehicle-mounted access point AP and the second track
When the distance of AP is less than the vehicle-mounted access point AP at a distance from the first track AP, determine that the vehicle-mounted access point AP detects the
Two track AP send wireless signal.
As can be seen from the technical scheme provided by the above-mentioned embodiment of the present invention, a kind of rail traffic of the embodiment of the present invention
Link switch-over method is applied on vehicle-mounted access point AP, establishes the first link between the vehicle-mounted access point AP and waveguide,
In, the waveguide receives the first track AP in a closed manner and sends wireless signal, and to the vehicle-mounted access in a manner of revealing
Point AP transmits the wireless signal that the first track AP is sent, comprising: when determining that the vehicle-mounted access point AP detects the second rail
Road AP send wireless signal when, establish the second link between the vehicle-mounted access point AP and waveguide, wherein the waveguide with
Closing mode receives the wireless signal of the second track AP transmission, and to the vehicle-mounted access point AP transmitting described the in a manner of revealing
The wireless signal that two track AP are sent；By the communication between vehicle-mounted access point AP and waveguide by first link switching to institute
State the second link.It can provide and unstable signal is converted into stabilization signal source method, improve the stability of rail traffic link.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, required use in being described below to embodiment
Attached drawing be briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for this
For the those of ordinary skill of field, without any creative labor, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is application scenario diagram in the prior art；
Fig. 2 is the application scenario diagram of the embodiment of the present invention one；
Fig. 3 is a kind of process flow diagram of the method for rail traffic link switching that the embodiment of the present invention one provides；
Fig. 4 is a kind of system module figure of the system of rail traffic link switching provided by Embodiment 2 of the present invention.
Specific embodiment
In order to facilitate understanding of embodiments of the present invention, it is done by taking several specific embodiments as an example below in conjunction with attached drawing further
Explanation, and each embodiment does not constitute the restriction to the embodiment of the present invention.
Embodiment one
In the present embodiment, including arranging several track AP in orbit, vehicle-mounted AP in the car is arranged and for passing
The waveguide for passing track AP signal is as shown in Fig. 2: a kind of rail traffic link switch-over method of the present embodiment, is applied to vehicle-mounted
On access point AP, in fig 2, A1B1, A2B2, A3B3, A4B4 are respectively 4 waveguide pipeline sections, and 36 on every waveguide pipeline section
Be an illustrative channel value, collectively constitute a waveguide, track AP1, track AP2 are respectively track AP, vehicle-mounted AP and
Vehicle-mounted interchanger (vehicle-mounted sw1) is located at interior, and terminal PC 2 is connect by track interchanger SW1 with trackside AP1 and AP2, rail
Other AP is set as hostap mode, and vehicle-mounted AP is set as sta mode, and vehicle-mounted AP and track AP form Radio Link.Track AP is logical
It crosses feeder line to access wireless signal because above waveguide at sustained height in waveguide, the wireless signal in each place is complete
Equally, thus trackside AP by wireless signal access waveguide after, the signal that vehicle-mounted AP is received on waveguide with regard to just the same,
Not with where track AP geographical location and deployment scheme be changed, in this way, vehicle-mounted AP receives track AP wireless signal
It saves unanimously, to solve the problems, such as that wireless signal is unstable and the unstable caused packet loss of wireless signal.
Wherein, in the present embodiment, vehicle-mounted AP can establish Radio Link with multiple track AP, because vehicle-mounted AP is STA mould
Formula, so can only be associated with an AP as the terminals such as mobile phone；Embodiment solves a STA and multiple AP and establishes company
It connects, establishes multiple virtual radiofiequency interfaces, these virtual radiofiequency interfaces share the same actual radio frequency interface and carry out transmitting/receiving wireless
Data, but Radio Link can be established with different AP, these links can be communicated with first line of a couplet AP.In these differences
Radio Link in, the link that selects a bars strong is other to be used as standby link as main Radio Link, when primary link signal quality
To after certain threshold values, communicated together using main/slave link.
Specifically, the actual radio frequency port of vehicle-mounted access point AP is mapped out into n virtual radiofiequency port respectively in advance, n is
Positive integer more than or equal to 2；By virtual radiofiequency port respectively with the first track AP signal transmitted on waveguide or institute
The signal source for stating the second track AP signal is associated respectively；
It is specific as follows,
Actual radio frequency mouth (vehicle-mounted access point AP) --- virtual radiofiequency mouth 1 (01:11:22:33:44:55)
Actual radio frequency mouth (vehicle-mounted access point AP) --- virtual radiofiequency mouth 2 (02:11:22:33:44:55)
Actual radio frequency mouth (vehicle-mounted access point AP) --- virtual radiofiequency mouth n (0n:11:22:33:44:55)
By each virtual radiofiequency port respectively with the first track AP signal transmitted on waveguide or described second
The signal source of track AP signal is associated respectively；
Specifically, such as:
The signal source 1 for the track AP signal that virtual radiofiequency mouth 1 and waveguide issue is associated；
The signal source 2 for the track AP signal that virtual radiofiequency mouth 2 and waveguide issue is associated；
And so on.
Wherein, multiple virtual radiofiequency ports are gone out by actual radio frequency port mapping and shares the actual radio frequency port progress wirelessly
Data transmit-receive.
The process that access point AP vehicle-mounted in this way receives track AP is as follows:
Track AP1-transmitted signals to by feeder line --- waveguide (the associated signal source 1 of virtual radiofiequency mouth 1) > > > nothing
Line signal > > > car antenna ----is transmitted signals to by feeder line --- vehicle-mounted access point AP；
Track AP2-- is transmitted signals to by feeder line --- waveguide (the associated signal source 2 of virtual radiofiequency mouth 2) > > > nothing
Line signal > > > car antenna ----is transmitted signals to by feeder line --- vehicle-mounted access point AP；
A kind of process flow diagram such as 2 institute of attached drawing of the method for rail traffic link switching that the embodiment of the present invention one provides
Show, in the communication between vehicle-mounted access point AP and waveguide, establishes the first chain between the vehicle-mounted access point AP and waveguide
Road is communicated, wherein the waveguide receive in a closed manner the first track AP send wireless signal, and in a manner of revealing to
The vehicle-mounted access point AP transmits the wireless signal that the first track AP is sent, comprising:
Step 11, when determine the vehicle-mounted access point AP detect the second track AP send wireless signal when, it is described vehicle-mounted
It establishes the second link between access point AP and waveguide to be communicated, wherein the waveguide receives the second rail in a closed manner
The wireless signal that road AP is sent, and the wireless of the second track AP transmission is transmitted to the vehicle-mounted access point AP in a manner of revealing
Signal；
Specifically, it is less than the vehicle-mounted access point AP and the first track at a distance from the second track AP as vehicle-mounted access point AP
AP apart from when, determine the vehicle-mounted access point AP detect the second track AP send wireless signal, the vehicle-mounted access point AP
The second link is established between waveguide.
In embodiment, because using waveguide for medium, wireless signal is highly stable, and train will not be because of from AP
Signal is with regard to weak, so tradition is decayed to after certain threshold values by signal and starts to roam this mechanism and be not suitable in this patent；
In fig 2 as can be seen that vehicle-mounted AP can be easy to judge vehicle-mounted AP by wireless location technologies such as RTT
It is closer apart from any platform track AP, when track AP passes through the midpoint of 2 track AP, active-standby switch is carried out, because main/slave link is all
It can communicate, so will not packet loss and cutout in roam procedure.
In the present embodiment, preferably RTT (Round-Trip Time), the wireless location method of round-trip delay determines the vehicle
It carries at a distance from access point AP and the second track AP and the vehicle-mounted access point AP is at a distance from the first track AP.
Step 12, by the communication between vehicle-mounted access point AP and waveguide by first link switching to second chain
Road.
The waveguide receives the first track AP in a closed manner and sends wireless signal and the waveguide with the side of closing
Formula receives the second track AP and sends wireless signal, comprising:
The waveguide is made of n root waveguide pipeline section, between adjacent two waveguide pipeline sections with it is overlapped staggeredly be connected
Closing mode connects, wherein with the first track AP and the second track AP apart from nearest waveguide in the n root waveguide pipeline section
Pipeline section receives the wireless signal that the first track AP is sent in a closed manner or receives the nothing that the second track AP is sent
Line signal.
The waveguide transmits the wireless communication that the first track AP is sent to the vehicle-mounted access point AP in a manner of revealing
Number and the waveguide transmit the wireless communication that the second track AP is sent to the vehicle-mounted access point AP in a manner of revealing
Number, comprising:
The waveguide is made of n root waveguide pipeline section, between adjacent two waveguide pipeline sections with it is overlapped staggeredly be connected
Closing mode connects, with the first track AP and the second track AP apart from nearest waveguide pipeline section in the n root waveguide pipeline section
On transmit the wireless signal that the first track AP is sent to the vehicle-mounted access point AP in a manner of the leakage for opening up hole, with
And the mode of the leakage of hole is opened up on the waveguide and transmits what the second track AP was sent to the vehicle-mounted access point AP
Wireless signal.
Specifically, by the communication between vehicle-mounted access point AP and waveguide by first link switching to described second
When link, n virtual radiofiequency port is still mapped out respectively with above-mentioned actual radio frequency port, n is that the positive integer more than or equal to 2 is
Example, when establishing the first link between the vehicle-mounted access point AP and waveguide, by the first virtual radiofiequency port and described first
The signal source of track AP signal is associated, and is established first link and is communicated, by the second virtual radiofiequency port with it is described
The signal source of second track AP signal is associated, and establishes backup link without communication, when determining the vehicle-mounted access point AP
When detecting that the second track AP sends wireless signal, enabling the backup link is second link.Wherein, it first virtually penetrates
Frequency port and the second virtual radiofiequency port are all that actual radio frequency port maps out port in n virtual radiofiequency port respectively.
Vehicle-mounted access point AP is moved always, and at any time, vehicle-mounted AP is gone out wherein by actual radio frequency port mapping
It is established between one virtual radiofiequency port (being the first virtual radiofiequency port in the present embodiment) and the strongest track AP of signal strength
One primary link is the first link in the present embodiment, (in the present embodiment virtual for second by other unused virtual radiofiequency ports
Prevention at radio-frequency port) with the strongest track AP of next signal intensity directly establish a backup link, backup link is first established but not
It is communicated, according to above-mentioned steps 11, when determining that the vehicle-mounted access point AP detects that the second track AP sends wireless signal,
Enabling backup link is the second link, establishes the second link between vehicle-mounted access point AP and waveguide and is communicated namely this reality
Apply the backup link of example.
Embodiment two
This embodiment offers a kind of rail traffic link switching systems, are applied on vehicle-mounted access point AP, specific real
Existing structure is as shown in figure 4, can specifically include following module:
Establish module 41: it is used to making to establish the first link between the vehicle-mounted access point AP and waveguide and be communicated,
Wherein, the waveguide receives the first track AP in a closed manner and sends wireless signal, and vehicle-mounted is connect in a manner of leakage to described
Access point AP transmits the wireless signal that the first track AP is sent；
When determining that the vehicle-mounted access point AP detects that the second track AP sends wireless signal, the vehicle-mounted access point AP
It establishes the second link between waveguide to be communicated, wherein the waveguide receives the second track AP transmission in a closed manner
Wireless signal, and transmit the wireless signal that the second track AP is sent to the vehicle-mounted access point AP in a manner of revealing；
Switching module 42: it is used for the communication between vehicle-mounted access point AP and waveguide by first link switching extremely
Second link.
A kind of rail traffic link switching system of the present embodiment, the waveguide are made of n root waveguide pipeline section, and adjacent two
It is connected in a manner of the overlapped closing being staggeredly connected between root waveguide pipeline section, the module of establishing is specifically used for:
Make in the n root waveguide pipeline section with the first track AP and the second track AP apart from nearest waveguide pipeline section to seal
The mode of closing receives the wireless signal that the first track AP is sent or receives the wireless signal that the second track AP is sent.
A kind of rail traffic link switching system of the present embodiment, the waveguide are made of n root waveguide pipeline section, and adjacent two
Connected in a manner of overlapped staggeredly connected closing between root waveguide pipeline section, it is described establish module also particularly useful for: make the n
Open up the leakage of hole in root waveguide pipeline section on nearest waveguide pipeline section with the first track AP and the second track AP
Mode transmit to the vehicle-mounted access point AP and opened up on the wireless signal and the waveguide that the first track AP is sent
The mode of the leakage of hole transmits the wireless signal that the second track AP is sent to the vehicle-mounted access point AP.
A kind of rail traffic link switching system of the present embodiment, further includes:
Mapping block 40: it is used to that the actual radio frequency port of vehicle-mounted access point AP to be mapped out n respectively in advance and virtually penetrates
Frequency port, n are the positive integer more than or equal to 2；By virtual radiofiequency port respectively with first track that is transmitted on waveguide
The signal source of AP signal or the second track AP signal is associated respectively；
Wherein, the actual radio frequency port is shared by the n virtual radiofiequency port that actual radio frequency port mapping goes out and carries out nothing
Line data transmit-receive；
It is described establish module also particularly useful for: when establishing the first link between the vehicle-mounted access point AP and waveguide,
First virtual radiofiequency port and the signal source of the first track AP signal are associated, first link is established and is led to
Letter,
Second virtual radiofiequency port and the signal source of the second track AP signal are associated, establish backup link not
It is communicated,
When determining that the vehicle-mounted access point AP detects that the second track AP sends wireless signal, the backup link is enabled
For second link.
It is described establish module also particularly useful for: when vehicle-mounted access point AP is less than described vehicle-mounted connect at a distance from the second track AP
When access point AP is at a distance from the first track AP, determine that the vehicle-mounted access point AP detects that the second track AP sends wireless signal.
The detailed process and preceding method embodiment class of rail traffic link switching are carried out with the system of the embodiment of the present invention
Seemingly, details are not described herein again.
In conclusion a kind of rail traffic link switch-over method of the embodiment of the present invention, is applied on vehicle-mounted access point AP,
The first link is established between the vehicle-mounted access point AP and waveguide, wherein the waveguide receives the first rail in a closed manner
Road AP sends wireless signal, and transmits the wireless communication that the first track AP is sent to the vehicle-mounted access point AP in a manner of revealing
Number characterized by comprising it is described when determining that the vehicle-mounted access point AP detects that the second track AP sends wireless signal
The second link is established between vehicle-mounted access point AP and waveguide, wherein the waveguide receives the second track AP in a closed manner
The wireless signal of transmission, and the wireless communication that the second track AP is sent is transmitted to the vehicle-mounted access point AP in a manner of revealing
Number；By the communication between vehicle-mounted access point AP and waveguide by first link switching to second link.It can provide
Unstable signal is converted into stabilization signal source method, improves the stability of rail traffic link.
Those of ordinary skill in the art will appreciate that: attached drawing is the schematic diagram of one embodiment, module in attached drawing or
Process is not necessarily implemented necessary to the present invention.
As seen through the above description of the embodiments, those skilled in the art can be understood that the present invention can
It realizes by means of software and necessary general hardware platform.Based on this understanding, technical solution of the present invention essence
On in other words the part that contributes to existing technology can be embodied in the form of software products, the computer software product
It can store in storage medium, such as ROM/RAM, magnetic disk, CD, including some instructions are used so that a computer equipment
(can be personal computer, server or the network equipment etc.) executes the certain of each embodiment or embodiment of the invention
Method described in part.
All the embodiments in this specification are described in a progressive manner, same and similar portion between each embodiment
Dividing may refer to each other, and each embodiment focuses on the differences from other embodiments.Especially for device or
For system embodiment, since it is substantially similar to the method embodiment, so describing fairly simple, related place is referring to method
The part of embodiment illustrates.Apparatus and system embodiment described above is only schematical, wherein the conduct
The unit of separate part description may or may not be physically separated, component shown as a unit can be or
Person may not be physical unit, it can and it is in one place, or may be distributed over multiple network units.It can root
According to actual need that some or all of the modules therein is selected to achieve the purpose of the solution of this embodiment.Ordinary skill
Personnel can understand and implement without creative efforts.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
In the technical scope disclosed by the present invention, any changes or substitutions that can be easily thought of by anyone skilled in the art,
It should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be with scope of protection of the claims
Subject to.
Claims (11)
1. a kind of rail traffic link switch-over method is applied on vehicle-mounted access point AP, the vehicle-mounted access point AP and waveguide
Between establish the first link and communicated, wherein the waveguide receives the first track AP in a closed manner and sends wireless signal,
And the wireless signal that the first track AP is sent is transmitted to the vehicle-mounted access point AP in a manner of revealing, which is characterized in that packet
It includes:
When determining that the vehicle-mounted access point AP detects that the second track AP sends wireless signal, the vehicle-mounted access point AP and wave
The second link is established between conduit to be communicated,
Wherein, the waveguide receives the wireless signal of the second track AP transmission in a closed manner, and to described in a manner of revealing
Vehicle-mounted access point AP transmits the wireless signal that the second track AP is sent, wherein the second track AP is first rail
Road AP adjacent next track AP；
By the communication between vehicle-mounted access point AP and waveguide by first link switching to second link.
2. a kind of rail traffic link switch-over method according to claim 1, which is characterized in that the waveguide is to close
Mode receives the first track AP transmission wireless signal and the waveguide receives the second track AP in a closed manner and sends wirelessly
Signal, comprising:
The waveguide is made of n root waveguide pipeline section, with the overlapped closing being staggeredly connected between adjacent two waveguide pipeline sections
Mode connects, wherein with the first track AP and the second track AP apart from nearest waveguide pipeline section in the n root waveguide pipeline section
The wireless signal or receive the wireless communication that the second track AP is sent that the first track AP is sent are received in a closed manner
Number.
3. a kind of rail traffic link switch-over method according to claim 2, which is characterized in that the waveguide is to reveal
Mode is to the vehicle-mounted access point AP wireless signal for transmitting the first track AP transmission and the waveguide with the side of leakage
Formula transmits the wireless signal that the second track AP is sent to the vehicle-mounted access point AP, comprising:
The waveguide is made of n root waveguide pipeline section, with the overlapped closing being staggeredly connected between adjacent two waveguide pipeline sections
Mode connects, in the n root waveguide pipeline section with the first track AP and the second track AP on nearest waveguide pipeline section with
The mode for opening up the leakage of hole transmits the wireless signal that the first track AP is sent, Yi Jisuo to the vehicle-mounted access point AP
The mode for stating the leakage that hole is opened up on waveguide transmits the wireless of the second track AP transmission to the vehicle-mounted access point AP
Signal.
4. a kind of rail traffic link switch-over method according to claim 3, which is characterized in that further include:
The actual radio frequency port of vehicle-mounted access point AP is mapped out into n virtual radiofiequency port respectively in advance, n is more than or equal to 2
Positive integer；By virtual radiofiequency port respectively with the first track AP signal or the second track AP that are transmitted on waveguide
The signal source of signal is associated respectively；
Wherein, the actual radio frequency port is shared by the n virtual radiofiequency port that actual radio frequency port mapping goes out to carry out without line number
According to transmitting-receiving.
5. a kind of rail traffic link switch-over method according to claim 4, which is characterized in that described by virtual radiofiequency end
Mouth respectively with the signal source of the first track AP signal or the second track AP signal that are transmitted on waveguide respectively into
Row association, comprising:
When establishing the first link between the vehicle-mounted access point AP and waveguide, by the first virtual radiofiequency port and described first
The signal source of track AP signal is associated, and is established first link and is communicated,
Second virtual radiofiequency port and the signal source of the second track AP signal are associated, establish backup link without
Communication,
When determining that the vehicle-mounted access point AP detects that the second track AP sends wireless signal, the backup link is enabled as institute
State the second link.
6. a kind of rail traffic link switch-over method according to claim 5, which is characterized in that described when the determining vehicle
It carries access point AP and detects that the second track AP sends wireless signal and includes:
When being less than the vehicle-mounted access point AP at a distance from vehicle-mounted access point AP and the second track AP at a distance from the first track AP,
Determine that the vehicle-mounted access point AP detects that the second track AP sends wireless signal.
7. a kind of rail traffic link switching system is applied on vehicle-mounted access point AP, comprising:
Establish module: it is used to making to establish the first link between the vehicle-mounted access point AP and waveguide and be communicated, wherein institute
It states waveguide and receives the first track AP transmission wireless signal in a closed manner, and passed in a manner of revealing to the vehicle-mounted access point AP
Pass the wireless signal that the first track AP is sent；
When determining that the vehicle-mounted access point AP detects that the second track AP sends wireless signal, the vehicle-mounted access point AP and wave
It establishes the second link between conduit to be communicated, wherein the waveguide receives the nothing of the second track AP transmission in a closed manner
Line signal, and the wireless signal that the second track AP is sent is transmitted to the vehicle-mounted access point AP in a manner of revealing；
Switching module: it is used for the communication between vehicle-mounted access point AP and waveguide by first link switching to described
Two links.
8. a kind of rail traffic link switching system according to claim 7, which is characterized in that the waveguide is by n root
Waveguide pipeline section forms, and is connected in a manner of the overlapped closing being staggeredly connected between adjacent two waveguide pipeline sections, described to establish mould
Block is specifically used for:
Make in the n root waveguide pipeline section with the first track AP and the second track AP apart from nearest waveguide pipeline section with the side of closing
Formula receives the wireless signal that the first track AP is sent or receives the wireless signal that the second track AP is sent.
9. a kind of rail traffic link switching system according to claim 7, which is characterized in that
The waveguide is made of n root waveguide pipeline section, with the overlapped closing being staggeredly connected between adjacent two waveguide pipeline sections
Mode connects, it is described establish module also particularly useful for: make in the n root waveguide pipeline section with the first track AP and the second track
AP transmits first rail to the vehicle-mounted access point AP in a manner of the leakage for opening up hole on nearest waveguide pipeline section
The mode that the leakage of hole is opened up on the wireless signal and the waveguide that road AP is sent is transmitted to the vehicle-mounted access point AP
The wireless signal that the second track AP is sent.
10. a kind of rail traffic link switching system according to claim 8, which is characterized in that further include:
Mapping block: it is used to that the actual radio frequency port of vehicle-mounted access point AP to be mapped out n virtual radiofiequency port respectively in advance,
N is the positive integer more than or equal to 2；By virtual radiofiequency port respectively with the first track AP signal transmitted on waveguide or
The signal source of the second track AP signal is associated respectively；
Wherein, the actual radio frequency port is shared by the n virtual radiofiequency port that actual radio frequency port mapping goes out to carry out without line number
According to transmitting-receiving；
It is described establish module also particularly useful for:
When establishing the first link between the vehicle-mounted access point AP and waveguide, by the first virtual radiofiequency port and described first
The signal source of track AP signal is associated, and is established first link and is communicated,
Second virtual radiofiequency port and the signal source of the second track AP signal are associated, establish backup link without
Communication,
When determining that the vehicle-mounted access point AP detects that the second track AP sends wireless signal, the backup link is enabled as institute
State the second link.
11. a kind of rail traffic link switching system according to claim 10 characterized by comprising
It is described establish module also particularly useful for: when vehicle-mounted access point AP at a distance from the second track AP be less than the vehicle-mounted access point
When AP is at a distance from the first track AP, determine that the vehicle-mounted access point AP detects that the second track AP sends wireless signal.
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| CN201710310731.XA CN107205252B (en) | 2017-05-05 | 2017-05-05 | A kind of method and system of rail traffic link switching |
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| CN201710310731.XA CN107205252B (en) | 2017-05-05 | 2017-05-05 | A kind of method and system of rail traffic link switching |
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| CN107205252B true CN107205252B (en) | 2019-07-23 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1598255A1 (en) * | 2004-05-21 | 2005-11-23 | Pointshot Wireless Inc. | Dynamically forming a wireless local area network (WLAN) in a train |
| CN102869043A (en) * | 2011-07-07 | 2013-01-09 | 上海中科高等研究院 | Data transfer method of wireless local area network (WLAN) based rail communication system |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1598255A1 (en) * | 2004-05-21 | 2005-11-23 | Pointshot Wireless Inc. | Dynamically forming a wireless local area network (WLAN) in a train |
| CN102869043A (en) * | 2011-07-07 | 2013-01-09 | 上海中科高等研究院 | Data transfer method of wireless local area network (WLAN) based rail communication system |
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