CN109168143A

CN109168143A - Track land mobile communication system and its communication means, communication device and the network equipment

Info

Publication number: CN109168143A
Application number: CN201811018107.3A
Authority: CN
Inventors: 杨学金; 柳斯白
Original assignee: New H3C Technologies Co Ltd Chengdu Branch
Current assignee: New H3C Technologies Co Ltd Chengdu Branch
Priority date: 2018-08-31
Filing date: 2018-08-31
Publication date: 2019-01-08
Anticipated expiration: 2038-08-31
Also published as: CN109168143B

Abstract

Present disclose provides a kind of track land mobile communication system and its communication means, communication device and the network equipment, it is related to technical field of rail transit communication, this method comprises: monitoring the movable signal intensity and wireless lan signal intensity of underground mobile communication system in current environment；According to the movable signal intensity and wireless lan signal intensity listened to, switch the operating mode of vehicle-mounted access device, wherein operating mode includes mobile communication mode and WLAN mode；If switching to mobile communication mode, mobile communication mould group transmitting message is enabled；If switching to WLAN mode, WLAN mould group transmitting message is enabled.Pass through disclosure embodiment, vehicle-mounted access device can reasonably switch between mobile communication mode and wireless LAN communication mode, make vehicle-mounted access device no matter in ground region, or in subterranean zone, it can continue to transmit association message, and then service disconnection is avoided, improve the transmission performance of business.

Description

Track land mobile communication system and its communication means, communication device and the network equipment

Technical field

This disclosure relates to technical field of rail transit communication, more particularly, to a kind of track land mobile communication system and its communication Method, communication device and the network equipment.

Background technique

Traditional cities rail traffic signal system mainly uses WLAN (Wireless LAN, WLAN) network conduct Means of communication between vehicle ground, but WLAN is easy the interference by public user and influences train operation, therefore urban track traffic is assisted It can suggest that newly-built city rail traffic signal system uses the movement of LTE (Long Term Evolution, long term evolution) standard Communication system.

It is completely isolated with other industry space in tunnel for underground line, it can be used in LTE as defined in Ministry of Industry and Information Whole 20MHz frequency spectrums, can satisfy the bandwidth demand of vehicle-ground wireless communication business in this way, be based on this, underground rail is logical at present Letter route usually builds LTE A of main and standby relation, B net each other.For ground line, then need to share frequency with other industry, The 10MHz bandwidth in LTE can only be generally used, and the bandwidth that 10MHz bandwidth is usually unable to satisfy vehicle-ground wireless communication business needs It asks, LTE A of main and standby relation, B net and WLAN C net each other can be built simultaneously at present, by the mixed networking of these three networks, The vehicle-ground wireless communication business on ground is classified and is carried.

For the scene on rail communication system covering ground and underground, due to being assisted between LTE network and wlan network without standard Interoperability Mechanism is discussed, leads to the business that ground is net loaded by WLAN C, is interrupted in subterranean zone, traffic affecting transmission Performance.

Summary of the invention

In view of this, the disclosure is designed to provide a kind of track land mobile communication system and its communication means, communication dress It sets and the network equipment, smoothly switching for mobile communication system and wireless local area network (WLAN) system can be carried out, WLAN promotes industry The transmission performance of business.

To achieve the goals above, the disclosure the technical solution adopted is as follows:

In a first aspect, the method is applied to vehicle present disclose provides a kind of communication means of track land mobile communication system Access device is carried, the vehicle-mounted access device is configured with to connect the WLAN mould group of wireless local area network (WLAN) system and to connect ground The mobile communication mould group of lower mobile communication system, which comprises monitor underground mobile communication described in current environment The movable signal intensity and wireless lan signal intensity of system；According to the movable signal intensity that listens to and described wireless Local area network signal intensity switches the operating mode of the vehicle-mounted access device, wherein the operating mode includes mobile communication mould Formula and WLAN mode；If switching to the mobile communication mode, the mobile communication mould group transmitting message is enabled；Such as Fruit switches to the WLAN mode, enables the WLAN mould group transmitting message.

Second aspect, present disclose provides a kind of communication means of track land mobile communication system, the method is applied to nothing Controller in line LAN system, the wireless local area network (WLAN) system are laid in the ground area of the track land mobile communication system Domain, to be communicated in the ground region with vehicle-mounted access device；The described method includes: receiving the report that core switch is sent Text；Wherein, the core switch is the network equipment of the operation system connection in the track land mobile communication system, the core Heart interchanger sends a message when setting port receives message, to the controller；Determine the vehicle-mounted access The current operating mode of equipment, wherein the operating mode includes mobile communication mode and WLAN mode；If described Vehicle-mounted access device is mobile communication mode, abandons the message；If the vehicle-mounted access device is WLAN mode, The message is forwarded, so that the message transmissions are to the vehicle-mounted access device.

The third aspect, present disclose provides a kind of communication means of track land mobile communication system, the method is applied to move Equipment of the core network in dynamic communication system, the mobile communication system are laid in the subterranean zone of the track land mobile communication system And ground region；The described method includes: receiving the message that core switch is sent；Wherein, the core switch is the rail The network equipment of operation system connection in road land mobile communication system, the core switch receive message in setting port When, a message is sent to the equipment of the core network；Determine the current operating mode of the vehicle-mounted access device, wherein The operating mode includes mobile communication mode and WLAN mode；If the vehicle-mounted access device is WLAN Mode abandons the message；If the vehicle-mounted access device is mobile communication mode, the message is forwarded, so that the report Text is transmitted to the vehicle-mounted access device.

Fourth aspect, present disclose provides a kind of communication device of track land mobile communication system, described device is applied to vehicle Access device is carried, the vehicle-mounted access device is configured with to connect the WLAN mould group of wireless local area network (WLAN) system and to connect ground The mobile communication mould group of lower mobile communication system, described device include: that signal strength monitors module, are presently in ring for monitoring The movable signal intensity and wireless lan signal intensity of underground mobile communication system described in border；Operating mode switching module, For switching the vehicle-mounted access device according to the movable signal intensity and the wireless lan signal intensity listened to Operating mode, wherein the operating mode includes mobile communication mode and WLAN mode；First message transmissions mould Block is passed for when the operating mode switching module switches to the mobile communication mode, enabling the mobile communication mould group Defeated message；First message transmissions module, for when the operating mode switching module switches to the WLAN mode, Enable the WLAN mould group transmitting message.

5th aspect, present disclose provides a kind of communication device of track land mobile communication system, described device is applied to nothing Controller in line LAN system, the wireless local area network (WLAN) system are laid in the ground area of the track land mobile communication system Domain, to be communicated in the ground region with vehicle-mounted access device；Described device includes: the first message receiving module, for connecing Receive the message that core switch is sent；Wherein, the core switch is the operation system in the track land mobile communication system The network equipment of connection, the core switch are sent described in portion when setting port receives message to the controller Message；First operating mode determining module, for determining the current operating mode of the vehicle-mounted access device, wherein the work Operation mode includes mobile communication mode and WLAN mode；First message processing module (MPM), for being set in the vehicle-mounted access When for being mobile communication mode, the message is abandoned；And when the vehicle-mounted access device is WLAN mode, forwarding The message, so that the message transmissions are to the vehicle-mounted access device.

6th aspect, present disclose provides a kind of communication device of track land mobile communication system, described device is applied to move Equipment of the core network in dynamic communication system, the mobile communication system are laid in the subterranean zone of the track land mobile communication system And ground region；Described device includes: the second message receiving module, for receiving the message of core switch transmission；Wherein, institute The network equipment that core switch is the operation system connection in the track land mobile communication system is stated, the core switch exists When setting port receives message, a message is sent to the equipment of the core network；Second operating mode determining module is used In determining the current operating mode of the vehicle-mounted access device, wherein the operating mode includes mobile communication mode and wireless Local area network mode；Second message processing module (MPM) is used for when the vehicle-mounted access device is WLAN mode, described in discarding Message；When the vehicle-mounted access device is mobile communication mode, the message is forwarded, so that the message transmissions are to the vehicle Carry access device.

7th aspect, present disclose provides a kind of track land mobile communication system, the track land mobile communication system includes: cloth Set on ground region wireless local area network (WLAN) system, be laid in the mobile communication system of ground region and subterranean zone, and be used for The vehicle-mounted access device communicated with the mobile communication system of the wireless local area network (WLAN) system and subterranean zone；The vehicle-mounted access is set Standby includes communication device described in above-mentioned fourth aspect: the controller in the wireless local area network (WLAN) system includes described in the 5th aspect Communication device；Equipment of the core network in the mobile communication system includes communication device described in the 6th aspect；The track Land mobile communication system further includes core switch, and the core switch is the operation system in the track land mobile communication system The network equipment of connection, the core switch are used to the message is replicated, respectively to institute when setting port receives message It states equipment of the core network and the controller and respectively sends a message.

Eighth aspect, present disclose provides a kind of network equipment, including processor and machine readable storage medium, the machines Device readable storage medium storing program for executing is stored with the machine-executable instruction that can be executed by the processor, and the processor executes the machine Device executable instruction is to realize the above method.

9th aspect, present disclose provides a kind of machine readable storage medium, the machine readable storage medium is stored with Machine-executable instruction, when being called and being executed by processor, the machine-executable instruction promotees the machine-executable instruction The processor is set to realize the above method.

Above-mentioned track land mobile communication system and its communication means, communication device and the network equipment, by being set in vehicle-mounted access Standby upper configuration WLAN mould group and mobile communication mould group, can control the work of vehicle-mounted access device according to the signal strength listened to Mode makes so that vehicle-mounted access device reasonably switches between mobile communication mode and local area network wireless LAN communication mode Vehicle-mounted access device can continue to transmit association message, and then avoid industry no matter in ground region, or in subterranean zone Business is interrupted, and the transmission performance of business is improved.

Other feature and advantage of the disclosure will illustrate in the following description, alternatively, Partial Feature and advantage can be with Deduce from specification or unambiguously determine, or by implement the disclosure above-mentioned technology it can be learnt that.

To enable the above objects, features and advantages of the present invention to be clearer and more comprehensible, better embodiment is cited below particularly, and match Appended attached drawing is closed, is described in detail below.

Detailed description of the invention

It, below will be to specific in order to illustrate more clearly of disclosure specific embodiment or technical solution in the prior art Embodiment or attached drawing needed to be used in the description of the prior art be briefly described, it should be apparent that, it is described below Attached drawing is some embodiments of the disclosure, for those of ordinary skill in the art, before not making the creative labor It puts, is also possible to obtain other drawings based on these drawings.

Fig. 1 is the environment schematic for the underground rail land mobile communication system that disclosure embodiment provides；

Fig. 2 is the environment schematic for the ground rail land mobile communication system that disclosure embodiment provides；

Fig. 3 is a kind of flow diagram of the communication means for track land mobile communication system that disclosure embodiment provides；

Fig. 4 is the environment schematic for the underground rail land mobile communication system that disclosure embodiment provides；

Fig. 5 is the environment schematic for the ground rail land mobile communication system that disclosure embodiment provides；

Fig. 6 is the flow chart of the communication means for another track land mobile communication system that disclosure embodiment provides；

Fig. 7 is a kind of flow chart of the communication means for track land mobile communication system that disclosure embodiment provides；

Fig. 8 be disclosure embodiment provide a kind ofly down toward ground track land mobile communication system communication means Flow chart；

Fig. 9 is a kind of communication means of the track land mobile communication system for ground to the underground that disclosure embodiment provides Flow chart；

Figure 10 is the structural block diagram for the vehicle-mounted access device that disclosure embodiment provides；

Figure 11 is the structural block diagram of the communication device for the track land mobile communication system that disclosure embodiment provides；

Figure 12 is the structural block diagram of the communication device for the track land mobile communication system that disclosure embodiment provides；

Figure 13 is a kind of structural block diagram for track land mobile communication system that disclosure embodiment provides；

Figure 14 is the switching construction schematic diagram for the track land mobile communication system that disclosure embodiment provides；

Figure 15 is handoff procedure schematic diagram of the ground that provides of disclosure embodiment down toward ground；

Figure 16 is a kind of structural schematic diagram for network equipment that disclosure embodiment provides.

Specific embodiment

To keep the purposes, technical schemes and advantages of disclosure embodiment clearer, below in conjunction with attached drawing to this public affairs The technical solution opened is clearly and completely described, it is clear that and described embodiment is a part of embodiment of the disclosure, Rather than whole embodiment.Based on the embodiment in the disclosure, those of ordinary skill in the art are not making creation Property labour under the premise of every other embodiment obtained, belong to the disclosure protection range.

It should be noted that above-mentioned each method embodiment is described in a progressive manner, each embodiment emphasis What is illustrated is all the difference with other embodiments, and same and similar part refers to each other i.e. between each embodiment It can.

Urban track traffic vehicle-ground wireless communication system is also referred to as track land mobile communication system, underground as shown in Figure 1 The environment schematic of track land mobile communication system, the system use mutually redundant LTE A1 net and LTE B1 net with underground line For, wherein LTE A1 net is used in LTE B1 net failure, transmits the business of signal system, LTE B1 net is used for transmission letter Number system, train status/urgent TEXT system, PIS (Passenger Information System, passenger information system)/ The business of CCTV (Closed Circuit Television, closed-circuit TV monitoring system) and Trunked Radio System.Below For row service message, each downlink business message is successively via core switch, core net, transmission network, BBU (Building Base band Unit, baseband processing unit) and RRU (Radio Remote Unit, Remote Radio Unit) be transmitted to vehicle-mounted set It is standby.

Mobile unit in Fig. 1 includes: (1) TAU (Tracking Area Update, TAU)-CBTC equipment, for connecing Receive CBTC (Communication Based Train Control System, the train automatic controlling system based on communication) Business, and the business is transferred to cab signal system.(2) cluster on-vehicle host, for receiving colony dispatching service, and should Business is transferred to cluster MMI (Man Machine Interface, vehicle-mounted man-machine interface).(3) TAU-PIS/CCTV server, For receiving non-key business, such as train status/urgent text, the business etc. of PIS/CCTV, and should by vehicle-mounted interchanger Business is transferred to corresponding vehicle-mounted PIS/CCTV and train status/urgent TEXT system.

The environment schematic of ground rail land mobile communication system as shown in Figure 2, includes: ground line with Fig. 1 difference Road on the basis of mutually redundant LTE A2 net and LTE B2 net (identical as the network structure that LTE A1 net and LTE B1 are netted), WLAN C net is increased, by the train status of LTE B2 net transmission in Fig. 1/urgent TEXT system business, the industry of PIS/CCTV Business is transferred to WLAN C net transmission, is vehicle with trackside AP (Access Point, the wireless access point) docking in WLAN C net It carries AP and is transferred to vehicle-mounted AP after trackside AP receives the business that AC (Access Controller, access controller) is issued, by Vehicle-mounted AP is sent to vehicle-mounted interchanger.Wherein, the transmission network in being netted by LTE B2 between trackside AP and AC connects, Transmission network can individually be laid.Other service transmission paths in Fig. 2 are identical with Fig. 1.This laying for increasing WLAN C net Mode, can alleviate ground because other industry using LTE B2 net cause LTE B2 net bandwidth deficiency problem.

Above-mentioned underground uses LTE A1 net and LTE B1 net, and ground is using LTE A2 net, LTE B2 net and WLAN C net Mode switches to ground by ground in train because the vehicle-mounted AP of docking WLAN C net does not have the ability communicated with LTE B When lower, even if the LTE B net of underground transmits train status/urgent business of TEXT system and the business of PIS/CCTV, this A little business can not also be received by vehicle-mounted AP, these business is caused to be interrupted.Based on this, disclosure embodiment provides one kind Track land mobile communication system and its communication means, communication device and the network equipment.

It first describes in detail below to the communication means of track land mobile communication system.The rail that disclosure embodiment provides The communication means of road land mobile communication system is applied to vehicle-mounted access device.The vehicle-mounted access device is configured with wireless to connect The WLAN mould group of LAN system and the mobile communication mould group to connect underground mobile communication system.If mobile communication system It is LTE system, mobile communication mould group can be specially LTE mould group.If mobile communication system is 5G system, mobile communication mould group It can be specially 5G mould group.A kind of flow diagram of the communication means of track land mobile communication system as shown in Figure 3, this method The following steps are included:

Step S302 monitors the movable signal intensity and WLAN of underground mobile communication system in current environment Signal strength.

Wherein, signal quality RSRP (Reference Signal Receiving can be used in movable signal intensity Power, Reference Signal Received Power) it indicates, signal quality RSSI (Received can be used in wireless lan signal intensity Signal Strength Indication, the instruction of received signal intensity) it indicates.

In present embodiment, for subterranean zone, the network bandwidth of mobile communication system is not by the competition of other industry, out In saving network deployment resource and the considerations of maintenance cost, in present embodiment, using LTE A1 net shown in FIG. 1, LTE B1 Two net modes of net, therefore, if the train driving where vehicle-mounted access device is in subterranean zone, vehicle-mounted access device will be supervised It hears the movable signal intensity of local environment, may monitor less than wireless lan signal intensity or the wireless local area listened to Net signal strength is very weak (such as on ground and underground intersection near zone).

The letter of train is influenced in order to avoid the network bandwidth of other industry competition mobile communication system for ground region Number transmission performance, ground region generally use the Three Nets Model of LTE A2 net shown in Fig. 2, LTE B2 net and WLAN C net, because If the train driving where this vehicle-mounted access device, in ground region, vehicle-mounted access device is with can also listening in local environment Wireless lan signal intensity in the movable signal intensity and local environment of lower mobile communication system.Certainly, as train is remote From subterranean zone, the movable signal intensity of underground mobile communication system can be more and more weaker, until monitor less than.

Underground mobile communication system can be indicated with a preset mark, if underground mobile communication system is multiple When, it can also be indicated with preset multiple marks.Such as: the running rail of train is related to two subterranean zones, then and two Subterranean zone is laid with underground mobile communication system respectively, and each underground mobile communication system can use identical mark table Show, such as under LTE, can also each underground mobile communication system respectively use a mark to indicate, such as under1 LTE, Under2 LTE etc..

In one possible implementation, it is mobile that underground in current environment can be monitored by mobile communication mould group The movable signal intensity of communication system monitors the wireless lan signal intensity of current environment by WLAN mould group.

Step S304 switches vehicle-mounted access and sets according to the movable signal intensity and wireless lan signal intensity listened to Standby operating mode, wherein the operating mode includes mobile communication mode and WLAN mode.

In one possible implementation, if detecting wireless lan signal, illustrate to be laid in the environment wireless Local area network, then vehicle-mounted access device is operable with WLAN mode, if work at present in mobile communication mode, into Row pattern switching switches to WLAN mode；If currently having worked in WLAN mode, it is continually maintained in this Under mode.If can't detect wireless lan signal intensity, illustrate without laying WLAN in the environment, then vehicle-mounted connect Mobile communication mode should be worked in by entering equipment, similarly, if vehicle-mounted access device work at present in mobile communication mode, after Continuous maintenance in this mode, otherwise, switches to mobile communication mode.

Step S306 enables mobile communication mould group transmitting message if switching to mobile communication mode；If switching to nothing Line local area network mode enables WLAN mould group transmitting message.

If having carried out operating mode switching, corresponding mould group transmitting message is enabled.Here message can be track Certain a kind of message in land mobile communication system, such as the corresponding message of non-key business, specifically can be train status/urgent text This corresponding message, the service message etc. of PIS/CCTV.Based on this, vehicle-mounted access device can replace the TAU-PIS/ in Fig. 1 Vehicle-mounted AP in CCTV and Fig. 2, the underground rail land mobile communication system and Fig. 5 that specific present embodiment as shown in Figure 4 provides The environment schematic of the ground rail land mobile communication system of offer will connect LTE A net (i.e. above-mentioned LTE for ease of description A1 net and LTE A2 net) TAU-CBTC be identified as the first TAU-CBTC, will connect LTE B net (i.e. above-mentioned LTE B1 net and LTE B2 net) TAU-CBTC be identified as the 2nd TAU-CBTC.Because the vehicle-mounted access device in present embodiment configures WLAN mould group With mobile communication mould group, so can be communicated by mobile communication mould group with mobile communication system in subterranean zone, in ground area Domain can be communicated by WLAN mould group with wireless local area network (WLAN) system, realize the continuous transmission of underground and terrestrial service.

Above-mentioned communication means being capable of basis by configuring WLAN mould group and mobile communication mould group on vehicle-mounted access device The signal strength listened to controls the operating mode of vehicle-mounted access device, so that vehicle-mounted access device is in mobile communication mode and nothing Reasonably switch between line local area network communication mode, make vehicle-mounted access device no matter in ground region, or in subterranean zone, To continue to transmit association message, and then service disconnection is avoided, improves the transmission performance of business.

In order to make vehicle-mounted access device when carrying out operating mode switching, can seamless switching, what above-mentioned basis listened to Movable signal intensity and wireless lan signal intensity, the step of switching the operating mode of vehicle-mounted access device, may include with Lower step:

(1) during vehicle-mounted access device is in mobile communication mode, vehicle-mounted access device judges the wireless office listened to Whether domain net signal strength is greater than preset first WLAN intensity threshold；If so, triggering WLAN mould group connection is wireless LAN system；When movable signal intensity (it is logical to refer specifically to the movement connected under vehicle-mounted access device current mobile communications mode The signal strength of letter system) be less than preset first movement communication strength threshold value when, operating mode is cut by mobile communication mode It is changed to WLAN mode.

During vehicle-mounted access device is in mobile communication mode, if wireless lan signal intensity is greater than preset the One WLAN intensity threshold illustrates that train is just travelled by subterranean zone to ground region at this time, first triggers WLAN mould at this time Group connection wireless local area network (WLAN) system, the preparation before carrying out switching, then the mobile communication system of subterranean zone is because of train The region is gradually sailed out of, the intensity of the movable signal gradually decreases, once the movable signal intensity is less than preset first movement When communication strength threshold value, operating mode can be switched to WLAN mode by mobile communication mode.

(2) during vehicle-mounted access device is in WLAN mode, vehicle-mounted access device judges the movement listened to Whether signal strength is greater than preset second mobile communication intensity threshold；If so, triggering mobile communication mould group moves down with connecting Dynamic communication system；When wireless lan signal intensity is less than preset second WLAN intensity threshold, by operating mode It is mobile communication mode by WLAN pattern switching.

During vehicle-mounted access device is in WLAN mode, if the signal strength of underground mobile communication system is big In preset second mobile communication intensity threshold, illustrate that train is just travelled by ground region to subterranean zone, first triggering moves at this time Dynamic communications module connects the underground mobile communication system, the preparation before carrying out switching, then the wireless local area of ground region Because train gradually sails out of the region, the intensity of the wireless lan signal gradually decreases net, once the wireless lan signal It can be mobile logical by WLAN pattern switching by operating mode when intensity is less than preset second local area network intensity threshold Letter mode.

Since ground region and subterranean zone are laid with mobile communication system (such as LTE), in specific implementation, above-mentioned prison The movable signal intensity of current environment is surveyed when vehicle-mounted access device is in mobile communication mode, illustrates that the vehicle-mounted access is set In subterranean zone, which refers to the signal strength for the mobile communication system that it is connected for the train operation at standby place, The signal strength for the mobile communication system that the subterranean zone being currently located is laid.If vehicle-mounted access device is in WLAN When mode, illustrate train operation in ground region, and the signal strength size of the mobile communication system of ground region does not influence it Operating mode, therefore the movable signal intensity monitored herein also refers to the signal strength of the mobile communication system of subterranean zone.By This is it is found that can quickly identify whether current mobile communication system is the movement for needing to monitor for the ease of vehicle-mounted access device Communication system, disclosure embodiment introduce CSG (Closed Subscriber Group, closed user group) technology, are based on This, is configured with CSG ID, the value of the CSG ID of the value and mobile communication system of the CSG ID in above-mentioned vehicle-mounted access device It is related.By taking above-mentioned Fig. 4 and system shown in fig. 5 as an example, the mobile communication system of underground has LTE A1 net and LTE B1 net, ground Mobile communication system have LTE A2 net and LTE B2 net and WLAN i.e. WLAN C net.The specific value of CSG ID can To use following value mode:

(1) the CSG ID of LTE A1 net is that (such as: 1), LTE A1 net is for carrying CBTC business, in LTE B1 net for the first value When failure, the back-up system as LTE B1 net is enabled；The bandwidth of LTE A1 net is configurable to 5MHz.

(2) the CSG ID of LTE B1 net is that (such as: 2), LTE B1 net is for carrying the train comprising CBTC business for second value Full-service.The train full-service includes: CBTC business, colony dispatching service, PIS/CCTV business, urgent text and train status Information service.The bandwidth of LTE B1 net is configurable to 15MHz.

(3) the CSG ID of LTE A2 net is that (such as: 3), LTE A2 net is similar with LTE A1 net, for carrying CBTC for third value Business.In LTE B2 net failure, the back-up system as LTE B2 net is enabled.The bandwidth of LTE A2 net is configurable to 5MHz。

(4) LTE B2 net CSG ID be the 4th value (such as: 4), it is contemplated that ground other industry will use LTE net, this reality It applies the bandwidth that the LTE B2 is netted in mode and is configurable to 5MHz, the bandwidth for 5MHz considers that LTE B2 net is for carrying CBTC business and colony dispatching service, remaining non-key business are net loaded by WLAN C.

(5) WLAN C net does not configure CSG ID, and for carrying non-key business, which includes train full-service In business in addition to CBTC business and colony dispatching service, i.e., above-mentioned train status/business of urgent TEXT system, PIS/ The business of CCTV.The bandwidth of WLAN C net can be 15MHz, the number being also possible between 20MHz or 15MHz and 20MHz Value, this band width configuration can satisfy common business transmission needs.

(6) mobile unit on train (including TAU-CBTC, cluster on-vehicle host and vehicle-mounted access device), each equipment In safeguard the CSG ID list of its affiliated CSG, which is only capable of the corresponding mobile communication system of CSG ID in access list System, what other corresponding mobile communication system of CSG ID except list were inaccessible by for the equipment.Each mobile unit The CSG ID for setting configuration is specific as follows:

First TAU-CBTC is located at headstock, and the CSG ID of configuration is the first value and third value (such as above-mentioned 1 and 3), so that the One TAU-CBTC when subterranean zone, can access underground LTE A1 net in train operation；In train operation when ground region, First TAU-CBTC can access the LTE A2 net on ground.

2nd TAU-CBTC is located at the tailstock, and the CSG ID of configuration is second value and the 4th value (such as above-mentioned 2 and 4), so that the Two TAU-CBTC when subterranean zone, can access underground LTE B1 net in train operation；In train operation when ground region, 2nd TAU-CBTC can access the LTE B2 net on ground.

Cluster on-vehicle host can be located at headstock, can also be located at the tailstock；Or 1 is respectively laid each other in headstock and parking stall Active and standby cluster on-vehicle host, the CSG ID of each cluster on-vehicle host configuration are second value and the 4th value (such as above-mentioned 2 and 4), So that cluster on-vehicle host in train operation when subterranean zone, underground LTE B1 net can be accessed；In train operation in ground When region, cluster on-vehicle host can access the LTE B2 net on ground.

Vehicle-mounted access device can be located at headstock, can also be located at the tailstock；Or 1 is respectively laid each other in headstock and parking stall Active and standby vehicle-mounted access device, the CSG ID of each vehicle-mounted access device are second value (such as above-mentioned 2), if train is in subterranean region Domain, since the CSG ID of LTE B1 net is second value, so vehicle-mounted access device can access LTE B1 net and transmit data；If column Vehicle is in ground region, and since the CSG ID of LTE B2 net is the 4th value, and the CSG ID of vehicle-mounted access device is second value, therefore Vehicle-mounted access device will be unable to access LTE B2 net, and LTE B2 net is not the mobile communication system that vehicle-mounted access device needs to monitor System, therefore the signal strength of LTE B2 net will not affect that the switch decision of the operating mode of vehicle-mounted access device, vehicle-mounted access Equipment only needs to decide whether work in mobile communication mould according to the signal strength for the mobile communication system that CSG ID is second value Formula.

Value and the mobile communication system of the CSG ID is arranged by configuring CSG ID for vehicle-mounted access device in the above method The value of the CSG ID of system is related, can be easily carried out vehicle-mounted access device and work in subterranean zone to mobile communication mould Formula works in WLAN mode in ground region, simplifies the handoff procedure of operating mode.It is of course also possible to use its He identifies mobile communication system at mode, as long as can be realized the mesh for the mobile communication system that vehicle-mounted access device identification needs to monitor ?.

Above-mentioned Fig. 4 and system shown in fig. 5 are to configure on the basis of business classification to different mobile communication system Different CSG ID, and in specific implementation, can also use other delineation of activities modes, disclosure embodiment not office It is limited to the configuration mode of above-mentioned CSG ID, above description is only a kind of than more preferably mode.

The stream of the communication means for another track land mobile communication system that disclosure embodiment shown in Figure 6 provides Cheng Tu, this method is applied to the controller in wireless local area network (WLAN) system, such as AC (Access Controller, access controller), The wireless local area network (WLAN) system is laid in the ground region of track land mobile communication system, in ground region and above-mentioned vehicle-mounted access Equipment communication；This method comprises the following steps:

Step S602 receives the message that core switch is sent；Wherein, which is track land mobile communication system In operation system connection the network equipment, the core switch set port receive message when, to controller send one Part message.

System as shown in Figures 4 and 5, the side of core switch connect the operation system in track land mobile communication system, Signal system, train status/urgent TEXT system, PIS/CCTV and Trunked Radio System in operation system, that is, figure etc.；Core The other side connection AC of heart interchanger and and core net.

The port of the core switch of each operation system connection is different, therefore the business that receives of different port is not yet Together, business belonging to therefore can distinguishing message according to the receiving port of message, can also distinguish message according to the type of message Affiliated business.To set port as the input port of non-key business, which is specially train status/urgent text The second port that the first port and IS/CCTV that system is connected are connected, then core switch is in first port or second After port receives message, it can determine that the message is non-key business according to the inbound port of the message, it can also be according to this The type identification that the heading of message carries identifies that the message is non-key business, it will the message is copied as two parts, one Part message is sent to AC, and a message is sent to the equipment (abbreviation equipment of the core network) in core net.

In specific implementation, above-mentioned message reproduction process can be carried out based on the number for the exit port that inbound port configures, example Such as: the corresponding relationship of inbound port and exit port can be configured in advance, the corresponding exit port of above-mentioned first port is configured to connect The port of AC and the port of connection equipment of the core network, such first port has corresponded to two exit ports, if receiving from first port To message, and corresponding two exit ports of first port are checked, then copies two parts of messages, turn respectively from the two exit ports It sends out.Similarly, second port also configures the two exit ports.

Above-mentioned message reproduction process can be carried out with the type identification of base message, and this mode can be unworthy of being placed in port and going out The type of message of non-key business is configured a specific mark by the corresponding relationship of port, the type identification of configuration message, Such as 0000, another mark is configured by the type of message of key business, such as: 1111.When the class carried based on heading Type mark identification outgoing packet be non-key business message when, then copy two parts of messages, respectively by connection AC port and The port of connection equipment of the core network forwards.

Step S604 determines the current operating mode of vehicle-mounted access device, wherein the operating mode includes mobile communication mould Formula and WLAN mode.

Controller can actively obtain the operating mode of vehicle-mounted access device, also can receive what vehicle-mounted access device reported Operating mode.By taking vehicle-mounted access device reports operating mode as an example, vehicle-mounted access device is in access WLAN or disconnects nothing , can be to its operating mode of controller report during line local area network, and then controller is locally saving the operating mode, The operating mode can be synchronized to other controllers of WLAN by transmission network.Based on this, vehicle-mounted access is determined The step of equipment current operating mode may include: the operating mode searching the last vehicle-mounted access device and reporting；It will look into The operating mode found determines the current operating mode of vehicle-mounted access device.The mode of this determining operating mode is simple and easy, And high reliablity.

Step S606 abandons above-mentioned message if vehicle-mounted access device is mobile communication mode；If vehicle-mounted access device For WLAN mode, above-mentioned message is forwarded, so that the message transmissions are to vehicle-mounted access device.

The above method that present embodiment provides abandons related service when vehicle-mounted access device is mobile communication mode Message；The message that related service is forwarded when vehicle-mounted access device is WLAN mode, can make vehicle-mounted access device every The secondary message for only receiving a business, avoids repeatedly issuing traffic interference caused by duplicate message.Meanwhile it is a by transmission Message, also saves the consumption of the Internet resources in transmission process, reduces message to a certain extent to mobile communication system Bandwidth occupancy has ensured the transmission performance of each business.

A kind of flow chart of the communication means of track land mobile communication system shown in Figure 7, this method are applied to movement Equipment of the core network in communication system, the mobile communication system are laid in subterranean zone and the ground area of track land mobile communication system Domain；This method comprises:

Step S702 receives the message that core switch is sent；Wherein, which is track land mobile communication system In operation system connection the network equipment, the core switch set port receive message when, to equipment of the core network send out Send a message.

The particular content of core switch is same as above, and which is not described herein again.

Equipment of the core network in present embodiment is the interchanger in core net, e.g. EPC (Evolved Packet Core, core packet networks evolution) in equipment of the core network.

Step S704 determines the current operating mode of vehicle-mounted access device, wherein operating mode includes mobile communication mode With WLAN mode.

Step S706 abandons above-mentioned message if vehicle-mounted access device is WLAN mode；If vehicle-mounted access is set Standby is mobile communication mode, forwards the message, so that the message transmissions are to vehicle-mounted access device.

The above method that present embodiment provides abandons related service when vehicle-mounted access device is WLAN mode Message；The message that related service is forwarded when vehicle-mounted access device is mobile communication mode, can make vehicle-mounted access device every The secondary message for only receiving a business, avoids repeatedly issuing traffic interference caused by duplicate message.Meanwhile it is a by transmission Message, also saves the consumption of the Internet resources in transmission process, reduces message to a certain extent to mobile communication system Bandwidth occupancy has ensured the transmission performance of each business.

Still by taking Fig. 4 and system shown in Figure 5 as an example, travelled separately below by subterranean zone into ground region for train, with And train is travelled the actual scene into subterranean zone by ground region, provides the process of the communication means of track land mobile communication system Scheme, is illustrated so that vehicle-mounted access device carries above-mentioned non-key business as an example in this method.It is shown in Figure 8 a kind ofly Down toward the flow chart of the communication means of the track land mobile communication system on ground, method includes the following steps:

Step S802, during train is in subterranean zone, vehicle-mounted access device is because monitoring the wireless local area netted less than WLANC Net signal, listens only to the movable signal of LTE B1 net, therefore works in mobile communication mode, and will be on the mobile communication mode Report the equipment of the core network netted to LTE B1.

Because the CSG ID of vehicle-mounted access device is 2, and the CSG ID of the LTE B1 of underground net is also 2, so vehicle-mounted access Equipment works under mobile communication mode, will access LTE B1 net by mobile communication mould group, at this time the LTE of vehicle-mounted access device Network state information includes: the signal strength (RSRP) of LTE B1 net, and connection status is connected status.Vehicle-mounted access device Wlan network status information includes: the signal strength (RSSI) of WLAN C net, the connection shape of Mesh (wireless network grid) link State is notconnect state.Wherein, the connection status of the Mesh link refers to that the vehicle-mounted access device passes through WLAN mould group and trackside AP Connection status, if the connection status is notconnect state, illustrate the WLAN mould group of vehicle-mounted access device without and any one A trackside AP establishes communication link；If the connection status is connected status, illustrate the WLAN mould group and extremely of vehicle-mounted access device A few trackside AP establishes communication link.

As previously mentioned, underground section, without WLAN C net, under normal circumstances, message passes through LTE B1 net transmission, if LTE B1 net failure then only passes through the message of LTE A1 net transmission key business.Since LTE A1 net is the back-up system of LTE B1 net, It does not use under normal conditions, in order to economize on resources, band width configuration can be slightly less, such as bandwidth is 5MHz, and whole in order to ensure A track land mobile communication system safe operation, LTE A1 net only transmit the message (such as message of signal system) of key business, The message of other business will stop transmitting.

Subsequent process is described so that LTE B1 net is normal as an example in disclosure embodiment.The equipment of the core network of LTE B1 net After receiving the mobile communication mode that vehicle-mounted access device reports, saving the mobile communication mode is the current work of vehicle-mounted access device Operation mode.

When core switch connects the second of train status/urgent TEXT system first port or connection PIS/CCTV When port receives message, core switch copy packet obtains two parts of messages, the third end that a message passes through connection AC Mouth is sent, and a message is sent by connecting the 4th port of equipment of the core network.Because of the core of subterranean zone at this time Heart interchanger and not connected WLAN C net, so the message can not also reach AC even if third port sends message.Receive message Equipment of the core network, check the current operating mode of vehicle-mounted access device be mobile communication mode, which is continued to forward, with So that vehicle-mounted access device is received the message, completes subsequent business processing.

Step S804, when train reaches ground and underground intersection, vehicle-mounted access device listens to the wireless of WLAN C net The movable signal of local area network signal and LTE B1 net, and it is greater than preset first WLAN in wireless lan signal intensity When intensity threshold, vehicle-mounted access device triggering WLAN mould group connects WLAN C net, and the movable signal for continuing to monitor LTE B1 net is strong Degree, if the movable signal intensity listened to is less than preset first movement communication strength threshold value, by operating mode by moving Communication pattern is switched to WLAN mode, and the equipment of the core network that WLAN pattern notification is netted to LTE B1.

In order to make vehicle-mounted access device there is time enough to carry out operating mode switching, guarantee the duration of data transmission. Near the intersection of ground and underground, LTE net and WLAN C net will be laid, so that LTE signal and WLAN letter in the region Number overlapping covering.

When train reaches ground and underground intersection, because the CSG ID of vehicle-mounted access device configuration is 2, and ground LTE B2 The CSG ID of net is 4, so vehicle-mounted access device remains at the cell of underground LTE B1 net, until wireless lan signal is strong When spending sufficiently strong, first triggers WLAN mould group and access WLAN C net, be switched fast the preparation for carrying out connection to be subsequent, and Underground LTE B1 net signal gradually dies down, as low as configuration handoff threshold (i.e. preset first movement communication strength threshold value) when, Carry out operating mode switching.

After equipment of the core network receives the notice of WLAN mode, the current operating mode of vehicle-mounted access device is updated For WLAN mode, under the mode, if receiving the message of the 4th port output of core switch again, the report will be abandoned Text.

Step S806, vehicle-mounted access device enable the message transmissions function of WLAN mould group, deactivate mobile communication mould group Message transmissions function, and the AC that WLAN pattern notification WLAN C is netted, send and receive non-subsequently through WLAN mould group The message of key business.

After the message transmissions function of deactivating mobile communication mould group, vehicle-mounted access device will stop using mobile communication mould Group sends and receivees the message of non-key business.It is strong that WLAN mould group and mobile communication mould group also continue monitoring wireless local area network signal Degree and movable signal intensity.

After AC receives the notice of WLAN mode, updating the current operating mode of vehicle-mounted access device is wireless office Domain net mode under the mode, if receiving the message of the third port output of core switch, will forward the message so that vehicle-mounted Access device can receive the message.

The LTE network state information of vehicle-mounted access device includes: the signal strength (RSRP) of LTE B1 net at this time, connects shape State is idle state.The wlan network status information of vehicle-mounted access device includes: the signal strength (RSSI) of WLAN C net at this time, The connection status of Mesh link is connected status.

Vehicle-mounted access device can be believed when sending message by inquiry LTE network state information and wlan network state Breath determines that the message is sent by mobile communication mould group, or by WLAN mould group.

Above-mentionedly in the communication means of the track land mobile communication system on ground, pass through crossing on underground and ground Place, is based on movable signal intensity and wireless lan signal intensity, and the switching time of vehicle-mounted access device control operating mode makes Non-key business can seamless switching, ensured the performance of message transmissions.

A kind of flow chart of the communication means of the track land mobile communication system of ground to underground shown in Figure 9, the party Method the following steps are included:

Step S902, during train is in ground region, vehicle-mounted access device is because monitoring the shifting netted less than underground LTE B1 Dynamic signal, listens only to the wireless lan signal of WLAN C net, therefore works in WLAN mode, and by the wireless office Domain net mode reports to the AC of WLAN C net.

Because the CSG ID of vehicle-mounted access device is 2, and the CSG ID of the LTE B2 on ground net is 4, so vehicle-mounted access is set Standby work will access WLAN C net by WLAN mould group, at this time the LTE network of vehicle-mounted access device under WLAN mode Status information includes: the signal strength (RSRP) of LTE B1 net, and connection status is idle state.The WLAN net of vehicle-mounted access device Network status information includes: the signal strength (RSSI) of WLAN C net, and the connection status of Mesh link is connected status.

After AC receives the WLAN mode that vehicle-mounted access device reports, saving the WLAN mode is vehicle-mounted connect Enter the current operating mode of equipment.

As described above, as core switch connection train status/urgent TEXT system first port or connection PIS/ When the second port of CCTV receives message, core switch copy packet obtains two parts of messages, and a message passes through connection The third port of AC is sent, and a port is sent by connecting the 4th port of equipment of the core network.Because at this time The core switch in lower region is connected to WLAN C net, so the message that third port is sent can reach AC, AC checks vehicle-mounted The current operating mode of access device is WLAN mode, which is forwarded, so that vehicle-mounted access device receives this Message.

The equipment of the core network for receiving above-mentioned message checks that the current operating mode of vehicle-mounted access device is WLAN mould The packet loss is received two parts of messages to avoid vehicle-mounted access device by formula.

Step S904, when train reaches ground and underground intersection, vehicle-mounted access device listens to the wireless of WLAN C net The movable signal of local area network signal and LTE B1 net, and it is greater than preset second mobile communication intensity threshold in movable signal intensity When, vehicle-mounted access device triggering mobile communication mould group connects LTE B1 net, continues the wireless lan signal for monitoring WLAN C net Intensity, if the wireless lan signal intensity listened to is less than preset second WLAN intensity threshold, by work Mode is mobile communication mode by WLAN pattern switching, and mobile communication mode is notified to the AC of WLAN C net.

In order to make vehicle-mounted access device there is time enough to carry out operating mode switching, guarantee the duration of data transmission. Near the intersection of ground and underground, LTE net and WLAN C net are laid, so that LTE signal and WLAN letter in the region Number overlapping covering.

When train reaches ground and underground intersection, because the CSG ID of vehicle-mounted access device configuration is 2, and underground LTE B1 The CSG ID of net is also 2, so first triggering mobile communication mould group when the intensity for listening to movable signal is sufficiently strong and accessing LTE B1 net is switched fast the preparation for carrying out connection to be subsequent, and gradually dies down in the signal of WLAN C net, as low as configuration When handoff threshold (i.e. preset second WLAN intensity threshold), operating mode switching is carried out.

After AC receives the notice of mobile communication mode, updating the current operating mode of vehicle-mounted access device is mobile communication Mode under the mode, if receiving the message of the third port output of core switch again, will abandon the message.

Step S906, vehicle-mounted access device enable the message transmissions function of mobile communication mould group, deactivate WLAN mould group Message transmissions function, and by the equipment of the core network of mobile communication mode notice LTE B1 net, it is connect subsequently through mobile communication mould group Receive and send the message of non-key business.

Deactivate WLAN mould group message transmissions function after, vehicle-mounted access device will stop using WLAN mould group receive and Send the message of non-key business.WLAN mould group and mobile communication mould group also continue monitoring wireless local area network signal intensity and movement Signal strength.

After equipment of the core network receives the notice of mobile communication mode, updating the current operating mode of vehicle-mounted access device is Mobile communication mode, under the mode, if receiving the message of the 4th port output of core switch, the message will be forwarded so that Vehicle-mounted access device can receive the message.

The LTE network state information of vehicle-mounted access device includes: the signal strength (RSRP) of LTE B1 net at this time, connects shape State is connected status.The wlan network status information of vehicle-mounted access device includes: the signal strength of WLAN C net at this time (RSSI), the connection status of Mesh link is notconnect state.

In the communication means of the track land mobile communication system of above-mentioned ground to underground, pass through crossing on underground and ground Place, is based on movable signal intensity and wireless lan signal intensity, and the switching time of vehicle-mounted access device control operating mode makes Non-key business can seamless switching, ensured the performance of message transmissions.

Corresponding to the above method, the disclosure embodiment further provides a kind of communication device of track land mobile communication system, The device is applied to vehicle-mounted access device, the structural block diagram of vehicle-mounted access device shown in Figure 10, the vehicle-mounted access device Configured with the WLAN mould group 10 to connect wireless local area network (WLAN) system and the mobile communication to connect underground mobile communication system Mould group 12, the communication device 14 comprise the following modules:

Signal strength monitors module 142, for monitoring the movable signal of underground mobile communication system in current environment Intensity and wireless lan signal intensity；

Operating mode switching module 144, for according to the movable signal intensity and wireless lan signal intensity that listen to, Switch the operating mode of vehicle-mounted access device, wherein operating mode includes mobile communication mode and WLAN mode；

First message transmissions module 146, for enabling and moving when operating mode switching module switches to mobile communication mode Dynamic 12 transmitting message of communications module；

First message transmissions module 148, for enabling when operating mode switching module switches to WLAN mode 10 transmitting message of WLAN mould group.

Above-mentioned communication device can control the operating mode of vehicle-mounted access device according to the signal strength listened to, so that Vehicle-mounted access device reasonably switches between mobile communication mode and wireless LAN communication mode, no matter makes vehicle-mounted access device In ground region, or in subterranean zone, it can continue to transmit association message, and then avoid service disconnection, improve industry The transmission performance of business.

Corresponding to the above method, the disclosure embodiment further provides a kind of communication device of track land mobile communication system, The device is applied to the controller in wireless local area network (WLAN) system, which is laid in track land mobile communication system Ground region, to be communicated in ground region with vehicle-mounted access device；Track land mobile communication system shown in Figure 11 leads to The structural block diagram of T unit, the device comprise the following modules:

First message receiving module 112, for receiving the message of core switch transmission；Wherein, which is In track land mobile communication system operation system connection the network equipment, core switch set port receive message when, A message is sent to controller；

First operating mode determining module 114, for determining the current operating mode of vehicle-mounted access device, wherein the work Operation mode includes mobile communication mode and WLAN mode；

First message processing module (MPM) 116, for abandoning above-mentioned message when vehicle-mounted access device is mobile communication mode； And when vehicle-mounted access device is WLAN mode, the message is forwarded, so that message transmissions are to vehicle-mounted access device.

The above-mentioned apparatus that present embodiment provides abandons related service when vehicle-mounted access device is mobile communication mode Message；The message that related service is forwarded when vehicle-mounted access device is WLAN mode, can make vehicle-mounted access device every The secondary message for only receiving a business, avoids repeatedly issuing traffic interference caused by duplicate message.Meanwhile it is a by transmission Message, also saves the consumption of the Internet resources in transmission process, reduces message to a certain extent to mobile communication system Bandwidth occupancy has ensured the transmission performance of each business.

Corresponding to the above method, the disclosure embodiment further provides a kind of communication device of track land mobile communication system, The device is applied to the equipment of the core network in mobile communication system, and mobile communication system is laid in the ground of track land mobile communication system Lower region and ground region；The structural block diagram of the communication device of track land mobile communication system shown in Figure 12, the device packet It includes:

Second message receiving module 122, for receiving the message of core switch transmission；Wherein, core switch is rail In road land mobile communication system operation system connection the network equipment, core switch set port receive message when, to Equipment of the core network sends a message；

Second operating mode determining module 124, for determining the current operating mode of vehicle-mounted access device, wherein work Mode includes mobile communication mode and WLAN mode；

Second message processing module (MPM) 126 is used for when vehicle-mounted access device is WLAN mode, dropping packets；? It when vehicle-mounted access device is mobile communication mode, E-Packets, so that message transmissions are to vehicle-mounted access device.

The above-mentioned apparatus that present embodiment provides abandons related service when vehicle-mounted access device is WLAN mode Message；The message that related service is forwarded when vehicle-mounted access device is mobile communication mode, can make vehicle-mounted access device every The secondary message for only receiving a business, avoids repeatedly issuing traffic interference caused by duplicate message.Meanwhile it is a by transmission Message, also saves the consumption of the Internet resources in transmission process, reduces message to a certain extent to mobile communication system Bandwidth occupancy has ensured the transmission performance of each business.

Corresponding to the above method, the disclosure, should referring to Figure 13 embodiment further provides a kind of track land mobile communication system Track land mobile communication system includes: the wireless local area network (WLAN) system for being laid in ground region, is laid in ground region and subterranean zone Mobile communication system, and the vehicle-mounted access for being communicated with the mobile communication system of wireless local area network (WLAN) system and subterranean zone Equipment；

Vehicle-mounted access device includes above-mentioned communication device shown in Fig. 10:

Controller in wireless local area network (WLAN) system includes communication device shown in above-mentioned Figure 11；

Equipment of the core network in mobile communication system includes communication device shown in above-mentioned Figure 12；

Track land mobile communication system further includes core switch, and core switch is the business in track land mobile communication system The network equipment of system connection, the core switch are used for when setting port receives message, copy packet, respectively to core Net equipment and controller respectively send a message.

The system that the mobile communication system of ground region and subterranean zone can lay two sets of main and standby relations each other, underground A set of spare moving communication system for being known as underground in region, the another set of main mobile communication system for being known as underground；Ground region In it is a set of be known as ground spare moving communication system, it is another set of be known as ground main mobile communication system.In present embodiment Vehicle-mounted access device include at least two, headstock and the tailstock can be respectively arranged at.Track land mobile communication system further include: with The vehicle-mounted interchanger of vehicle-mounted access device connection, for carrying non-key business.At least two TAU-CBTC, for carrying CBTC Business, wherein the CSG ID of a TAU-CBTC is the first value and third value, to connect the spare moving communication system of underground With the spare moving communication system on ground.The CSG ID of another TAU-CBTC is second value and the 4th value, to connect underground Main mobile communication system and ground main mobile communication system.At least two cluster on-vehicle hosts are dispatched for bearing cluster Business, the CSG ID of cluster on-vehicle host is second value and the 4th value, to connect the main mobile communication system and ground of underground The main mobile communication system in face.Also shown in Figure 13 TAU-CBTC, cluster on-vehicle host and vehicle-mounted access device with it is vehicle-mounted Operation system is correspondingly connected with relationship, may refer to foregoing teachings.

The above-mentioned track land mobile communication system that present embodiment provides, core switch receive message in setting port When, copy packet respectively sends a message to equipment of the core network and controller respectively, can simplify the processing side of core switch Formula, by controller and equipment of the core network is forwarded according to the operating mode of vehicle-mounted access device to above-mentioned message or discarding Reason, can make vehicle-mounted access device not and will receive duplicate message, the message of a business only be received every time, under avoiding repeatedly Send out traffic interference caused by duplicate message.Meanwhile by transmitting a message, the Internet resources in transmission process are also saved Consumption, reduces message to the bandwidth occupancy of mobile communication system to a certain extent, has ensured the transmission performance of each business.Separately The outer system, without building wireless local area network (WLAN) system, is reduced resource waste in subterranean zone.

The switching construction schematic diagram of track land mobile communication system shown in Figure 14 is shown from each operation system in ground To the structure of the communication system between vehicle-mounted each operation system, with subterranean zone for LTE A1 net and LTE B1 net, ground region For LTE A2 net, LTE B2 net and WLAN C net, by core switch and vehicle-mounted access device in the LTE net of underground and Switch between the WLAN net on ground.Core switch can be connected with ground LTE net and underground WLAN net, i.e., pass sequentially through in figure EPC, BBU and RRU and vehicle-mounted access device communicate to connect, and pass sequentially through AC, AP and vehicle-mounted access device communicates to connect.

Wherein, core switch completes Route Selection in down direction by multichannel sending function.Core switch receives After the downlink data sent to terrestrial service system, data are replicated and at the end of the port of connection equipment of the core network and connection AC Identical data are sent on mouth simultaneously.

For train when subterranean zone is run, equipment of the core network receives the movement that vehicle-mounted access device is checked after downlink data Communications module is dedicated bearer state of activation, sends data to corresponding vehicle-mounted access device.After AC receives downlink data The mesh link for checking the WLAN mould group of vehicle-mounted access device is off-state, directly abandons data.

For train when ground region is run, equipment of the core network receives the shifting that vehicle-mounted access device is checked after downlink data Dynamic communications module is dedicated bearer deactivation status, directly abandons data；AC checks vehicle-mounted access after receiving downlink data The mesh link of the WLAN of equipment is connection status, sends data to corresponding AP, and then be transmitted to vehicle-mounted access Equipment.

The double hair of core switch, equipment of the core network and AC by inaccessible number according to discarding by way of can realize downlink data Only sent in a usable wireless link.

Train is shown from subterranean zone to ground down toward the handoff procedure schematic diagram on ground in ground shown in Figure 15 Network switching process in the region process of face.In subterranean zone there are LTE A1 net, LTE B1 net, in ground region, there are LTE A2 net, LTE B2 net, WLAN C net.

For train when subterranean zone is run, only LTE signal, no WLAN signal, vehicle-mounted access device access LTE B1 net, Pass through LTE B1 net transmission data between core switch and vehicle-mounted access device；Train enters underground and ground intersection, WLAN C net, underground LTE B1 net overlapping coverage areas, still pass through LTE B1 net between core switch and vehicle-mounted access device Data are transmitted, while in WLAN C net connection ready state, LTE signal strength is not detected lower than configuration in vehicle-mounted access device Pass through LTE B1 net transmission data before thresholding；As train advances, ground LTE B2 net does not allow vehicle-mounted access device to access, ground Lower LTE B1 net signal continues to decline, until signal quality is lower than thresholding, vehicle-mounted access device deactivates special in LTE B1 network With carrying, WLAN C net transmission data are switched to.Train enters ground region, and ground LTE B2 net does not allow vehicle-mounted access device Access, vehicle-mounted access device continue through WLAN C transmitted data on network.Train is held when running from ground region to subterranean zone Row reverse procedure.

Embodiment further provides a kind of network equipment, a kind of structures of network equipment shown in Figure 16 to show for the disclosure It is intended to, which includes processor 1600 and machine readable storage medium 1601, and machine readable storage medium 1601 stores There is the machine-executable instruction that can be executed by processor 1600, it is above-mentioned to realize that processor 1600 executes machine-executable instruction The method that embodiment provides.

The network equipment shown in Figure 16 further includes bus 1602 and communication interface 1603, processor 1600, communication interface 1603 and machine readable storage medium 1601 connected by bus 1602.

Wherein, machine readable storage medium 1601 may include high-speed random access memory (RAM, Random Access Memory), it is also possible to further include non-labile memory (non-volatile memory), a for example, at least disk is deposited Reservoir.By at least one communication interface 1603 (can be wired or wireless) realize the system network element with it is at least one other Internet, wide area network, local network, Metropolitan Area Network (MAN) etc. can be used in communication connection between network element.It is total that bus 1602 can be ISA Line, pci bus or eisa bus etc..The bus can be divided into address bus, data/address bus, control bus etc..For convenient for table Show, only indicated with a four-headed arrow in Figure 16, it is not intended that an only bus or a type of bus.

Processor 1600 may be a kind of IC chip, the processing capacity with signal.It is above-mentioned during realization Each step of method can be completed by the integrated logic circuit of the hardware in processor 1600 or the instruction of software form.On The processor 1600 stated can be general processor, including central processing unit (Central Processing Unit, abbreviation CPU), network processing unit (Network Processor, abbreviation NP) etc.；It can also be digital signal processor (Digital Signal Processor, abbreviation DSP), specific integrated circuit (Application Specific Integrated Circuit, abbreviation ASIC), field programmable gate array (Field-Programmable Gate Array, abbreviation FPGA) or Person other programmable logic device, discrete gate or transistor logic, discrete hardware components.It may be implemented or execute sheet Disclosed each method, step and logic diagram in disclosed embodiment.General processor can be microprocessor or this at Reason device is also possible to any conventional processor etc..The step of method in conjunction with disclosed in disclosure embodiment, can direct body Now executes completion for hardware decoding processor, or in decoding processor hardware and software module combine and execute completion.It is soft Part module can be located at random access memory, and flash memory, read-only memory, programmable read only memory or electrically erasable programmable are deposited In the storage medium of this fields such as reservoir, register maturation.The storage medium is located at machine readable storage medium 1601, processor Information in 1600 read machine readable storage medium storing program for executing 1601, in conjunction with its hardware complete aforementioned embodiments method the step of.

Further, embodiment further provides a kind of machine readable storage medium, the machine readable storage mediums for the disclosure It is stored with machine-executable instruction, when being called and being executed by processor, machine-executable instruction promotes machine-executable instruction Processor realizes the method that above embodiment provides.

It is apparent to those skilled in the art that for convenience and simplicity of description, the system of foregoing description , can be with reference to the corresponding process in preceding method embodiment with the specific work process of device, details are not described herein.

Finally, it should be noted that embodiment of above, the only specific embodiment of the disclosure, to illustrate the disclosure Technical solution, rather than its limitations, the protection scope of the disclosure are not limited thereto, although referring to aforementioned embodiments to this public affairs It opens and is described in detail, it should be understood by those skilled in the art that: anyone skilled in the art is in this public affairs It opens in the technical scope of exposure, can still modify to technical solution documented by aforementioned embodiments or can think easily To variation or equivalent replacement of some of the technical features；And these modifications, variation or replacement, do not make corresponding The essence of technical solution is detached from the spirit and scope of disclosure embodiment technical solution, should all cover the protection model in the disclosure Within enclosing.Therefore, the protection scope of the disclosure should be subject to the protection scope in claims.

Claims

1. a kind of communication means of track land mobile communication system, which is characterized in that the method is applied to vehicle-mounted access device, institute Vehicle-mounted access device is stated to be configured with to connect the WLAN mould group of wireless local area network (WLAN) system and to connect underground mobile communication system The mobile communication mould group of system, which comprises

Monitor the movable signal intensity and wireless lan signal intensity of underground mobile communication system described in current environment；

According to the movable signal intensity and the wireless lan signal intensity listened to, switch the vehicle-mounted access device Operating mode, wherein the operating mode includes mobile communication mode and WLAN mode；

If switching to the mobile communication mode, the mobile communication mould group transmitting message is enabled；

If switching to the WLAN mode, the WLAN mould group transmitting message is enabled.

2. the method according to claim 1, wherein according to the movable signal intensity listened to and the nothing The step of line local area network signal intensity, the operating mode of the switching vehicle-mounted access device, comprising:

During the vehicle-mounted access device is in mobile communication mode, the wireless lan signal intensity listened to is judged Whether preset first WLAN intensity threshold is greater than；

If so, triggering the WLAN mould group connects the wireless local area network (WLAN) system；

When the movable signal intensity is less than preset first movement communication strength threshold value, operating mode is led to by the movement Letter pattern switching is the WLAN mode.

3. the method according to claim 1, wherein according to the movable signal intensity listened to and the nothing The step of line local area network signal intensity, the operating mode of the switching vehicle-mounted access device, comprising:

During the vehicle-mounted access device is in WLAN mode, whether the movable signal intensity listened to is judged Greater than preset second mobile communication intensity threshold；

If so, triggering the mobile communication mould group connects the underground mobile communication system；

When the wireless lan signal intensity is less than preset second WLAN intensity threshold, by operating mode by institute Stating WLAN pattern switching is the mobile communication mode.

4. the method according to claim 1, wherein the vehicle-mounted access device is identified configured with closed user group CSG ID, the value of the CSG ID and the value of CSG ID of the mobile communication system are related.

5. a kind of communication means of track land mobile communication system, which is characterized in that the method is applied to wireless local area network (WLAN) system In controller, the wireless local area network (WLAN) system is laid in the ground region of the track land mobile communication system, to described Ground region is communicated with vehicle-mounted access device；The described method includes:

Receive the message that core switch is sent；Wherein, the core switch is the industry in the track land mobile communication system The network equipment of business system connection, the core switch send one to the controller when setting port receives message Part message；

Determine the current operating mode of the vehicle-mounted access device, wherein the operating mode includes mobile communication mode and nothing Line local area network mode；

If the vehicle-mounted access device is mobile communication mode, the message is abandoned；

If the vehicle-mounted access device is WLAN mode, the message is forwarded, so that the message transmissions are to described Vehicle-mounted access device.

6. according to the method described in claim 5, it is characterized in that, determining the current operating mode of the vehicle-mounted access device Step, comprising:

Search the operating mode that the last vehicle-mounted access device reports；

The operating mode found is determined into the current operating mode of the vehicle-mounted access device.

7. a kind of communication means of track land mobile communication system, which is characterized in that the method is applied in mobile communication system Equipment of the core network, the mobile communication system is laid in the subterranean zone and ground region of the track land mobile communication system； The described method includes:

Receive the message that core switch is sent；Wherein, the core switch is the industry in the track land mobile communication system The network equipment of business system connection, the core switch are sent out when setting port receives message to the equipment of the core network Send a message；

If the vehicle-mounted access device is WLAN mode, the message is abandoned；

If the vehicle-mounted access device is mobile communication mode, the message is forwarded, so that the message transmissions are to the vehicle Carry access device.

8. a kind of communication device of track land mobile communication system, which is characterized in that described device is applied to vehicle-mounted access device, institute Vehicle-mounted access device is stated to be configured with to connect the WLAN mould group of wireless local area network (WLAN) system and to connect underground mobile communication system The mobile communication mould group of system, described device include:

Signal strength monitors module, for monitoring the movable signal intensity of underground mobile communication system described in current environment With wireless lan signal intensity；

Operating mode switching module, for strong according to the movable signal intensity and the wireless lan signal that listen to Degree switches the operating mode of the vehicle-mounted access device, wherein the operating mode includes mobile communication mode and wireless local area Net mode；

First message transmissions module, for enabling when the operating mode switching module switches to the mobile communication mode The mobile communication mould group transmitting message；

First message transmissions module, for opening when the operating mode switching module switches to the WLAN mode With the WLAN mould group transmitting message.

9. a kind of communication device of track land mobile communication system, which is characterized in that described device is applied to wireless local area network (WLAN) system In controller, the wireless local area network (WLAN) system is laid in the ground region of the track land mobile communication system, to described Ground region is communicated with vehicle-mounted access device；Described device includes:

First message receiving module, for receiving the message of core switch transmission；Wherein, the core switch is the rail The network equipment of operation system connection in road land mobile communication system, the core switch receive message in setting port When, a message is sent to the controller；

First operating mode determining module, for determining the current operating mode of the vehicle-mounted access device, wherein the work Mode includes mobile communication mode and WLAN mode；

First message processing module (MPM), for abandoning the message when the vehicle-mounted access device is mobile communication mode；And When the vehicle-mounted access device is WLAN mode, the message is forwarded, so that the message transmissions are to described vehicle-mounted Access device.

10. a kind of communication device of track land mobile communication system, which is characterized in that described device is applied in mobile communication system Equipment of the core network, the mobile communication system is laid in the subterranean zone and ground region of the track land mobile communication system； Described device includes:

Second message receiving module, for receiving the message of core switch transmission；Wherein, the core switch is the rail The network equipment of operation system connection in road land mobile communication system, the core switch receive message in setting port When, a message is sent to the equipment of the core network；

Second operating mode determining module, for determining the current operating mode of the vehicle-mounted access device, wherein the work Mode includes mobile communication mode and WLAN mode；

Second message processing module (MPM), for abandoning the message when the vehicle-mounted access device is WLAN mode；? When the vehicle-mounted access device is mobile communication mode, the message is forwarded, so that the message transmissions are to the vehicle-mounted access Equipment.

11. a kind of track land mobile communication system, which is characterized in that the track land mobile communication system includes: to be laid in ground area The wireless local area network (WLAN) system in domain, the mobile communication system for being laid in ground region and subterranean zone, and for it is described wireless The vehicle-mounted access device of the mobile communication system of LAN system and subterranean zone communication；

The vehicle-mounted access device includes communication device according to any one of claims 8:

Controller in the wireless local area network (WLAN) system includes communication device as claimed in claim 9；

Equipment of the core network in the mobile communication system includes communication device described in any one of claim 10；

The track land mobile communication system further includes core switch, and the core switch is the track land mobile communication system In operation system connection the network equipment, the core switch is used for when setting port and receiving message, described in duplication Message respectively sends a message to the equipment of the core network and the controller respectively.

12. a kind of network equipment, which is characterized in that including processor and machine readable storage medium, the machine readable storage Media storage has the machine-executable instruction that can be executed by the processor, and the processor executes the executable finger of the machine It enables to realize the described in any item methods of claim 1-7.

13. a kind of machine readable storage medium, which is characterized in that the machine readable storage medium is stored with the executable finger of machine It enables, for the machine-executable instruction when being called and being executed by processor, the machine-executable instruction promotes the processor Realize the described in any item methods of claim 1-7.