JP5201880B2 - Radio control method and radio control system - Google Patents

Description

  The present invention relates to a mobile communication device capable of communicating with a base station and a mobile communication system capable of communicating between the base station and the mobile.

  The present invention also relates to a wireless train control method and train control system, and in particular, in a wireless train control method and train control system, the communication connection is maintained by selecting an appropriate communication line when switching communication base stations. The present invention relates to a technology for updating and maintaining communication reliability.

  In a mobile communication system in which a mobile unit and a base station communicate with each other, since the position of the mobile unit moves, generally one base station cannot communicate with all mobile stations. For this reason, a plurality of base stations arranged in a moving range of the mobile body communicate with the mobile body. Therefore, as the mobile body moves, an operation called handover is required in which the mobile body switches the communication destination base station.

  As a conventional mobile communication handover method, for example, there is a method disclosed in Patent Document 1. In this method, the base station detects that the mobile body has approached the handover point, and notifies the mobile body of the communication channel of the destination base station before performing the handover. When the mobile unit reaches the handover point, the mobile unit switches to the communication channel of the destination base station that has been notified in advance, and performs handover without delay.

  In addition, in the radio train control method and train control system, a communication system is used to perform a “closed block system” that permits operation of only one train in one area and perform train control. In recent years, there has been a movement to reduce the cost of railway communication systems by introducing wireless communication systems. In the United States and China, introduction of a CBTC (Communication Based Train Control) system that performs train control by wireless communication is being promoted. On the other hand, the introduction of a system called ETCS / ERTMS is in progress in Europe. ETCS / ERTMS uses a GSM-R (GSM-Railway) based on a GSM network for a wireless system.

  In train control systems using wireless communication, maintaining and updating communication connections affects system reliability. In particular, it is important to maintain communication by selecting an appropriate communication line each time a communication base station is switched.

  Patent Document 2 describes a technology that uses high-frequency spread spectrum wireless communication in train position determination and control. Patent Document 3 describes a technique for performing mobile communication using a handover method in an automatic train control device in a railway security system. Patent Document 4 describes communication in a wireless train signal system in communication in a railway security system. The determination technique of the ground side radio | wireless apparatus of the movement destination which should communicate next when the inside train moves is described.

  Furthermore, Patent Document 5 describes a technique for making a handover reservation by previously making a plurality of conference communications between a base station in communication and an adjacent base station in a mobile communication system, and Patent Document 6 describes a train or an automobile. For example, when a moving body moves at high speed, a technique is described in which a position detector is installed on a route and a base station is switched according to position information from the position detector to shorten a handover time.

  FIG. 10 shows a conventional train control system using wireless communication. In a conventional train control system using wireless communication, in order to switch a base station with which a train communicates by movement, the communication frequency of the base station to which the train is switched is notified in advance, and the train is connected to the next base station based on that information. The method of communicating is adopted.

In FIG. 10, a train is equipped with an on-board control device and a communication device that transmits and receives radio, and moves on a traveling road. A base station 1 and a base station 2 that transmit and receive radio are installed on the ground device along the traveling path, and the base station 1 or the base station 2 and the communication device on the train mutually exchange the control information of the train. To communicate. Different communication frequencies f1 and f2 are assigned to the base station 1 or the base station 2 to prevent interference, and the train communication device switches the communication frequencies between f1 and f2 in accordance with the movement of the train. Alternatively, wireless communication with the base station 2 is performed, and frequency switching information for switching the communication frequencies f1 and f2 is notified from the base station 1 to the train communication device in advance, and the train uses the information to determine the frequency of the communication device. Has been switched.
Japanese Patent Laid-Open No. 9-307943 Japanese Patent No. 2738464 JP 2000-166531 A JP 2000-168556 A JP 09-307943 A JP 2005-236463 A

  In the prior art, in order to perform a handover without delay, it is necessary for the mobile body to know the communication channel of the destination base station in advance, and it is assumed that communication between the mobile body and the base station has been established. Become. If the communication between the mobile unit and the base station is interrupted and the communication channel of the target base station cannot be obtained before the handover, the communication at the target base station remains interrupted. Further, when communication is recovered from a communication interruption state, it generally takes time to recover communication because all the available channels are searched and the communication channel of the base station is obtained.

  In addition, in the ground device, it is necessary to recognize the position of the train, grasp the base station of the next destination, and transmit the frequency switching information, so as the number of trains increases, the processing amount of the ground side device increases. In addition, the frequency switching for maintaining a good communication state on the base station side requires prior negotiation with the train, and there is a problem that it is difficult to respond quickly.

  An object of the present invention is to realize a handover without delay even in a state where communication between a mobile unit and a base station is interrupted, and to reduce a time required for recovering communication from the communication interrupted state. . Another object of the present invention is to realize a distributed control type signal security system.

  In the train control method and train control system by radio of the present invention, the train has a correspondence database of base stations and communication frequencies, the train searches for communication frequencies for each base station, and assigns a plurality of communication frequencies for each base station, In addition, it is characterized in that interference between base stations is reduced by assigning an appropriate set of frequencies. Further, the present invention is characterized in that communication reliability is improved by multiplexing communication frequencies and communication devices and adding frequency selection processing.

  According to the present invention, the ground device can select an appropriate frequency for communication regardless of the position of the train. In addition, information exchange and synchronization between base stations is unnecessary, so that the processing of the ground device can be simplified and communication reliability can be improved.

  The present invention can be implemented in any device such as a train, a car, and a mobile phone that perform mobile communication, but in the following, mobile communication between a base station and a train will be described as an example. In the following.

  FIG. 1 is a diagram showing a configuration of a mobile communication system according to an embodiment of the present invention.

  In the illustrated mobile communication system, a mobile station 12 that communicates with a plurality of base stations 21a and 21b exists on a train 11 that is a mobile body. The communication device on the train 11 further includes a controller 13 connected to the mobile station 12, a position detection device 14, a database 15, and a data processing device 16 connected to the controller 13. The plurality of base stations 21 a and 21 b have single communication channels f 1 and f 2, respectively, and a specific range in the moving range of the train 11 as a moving body is a communication range.

  The flow of communication control will be described below. The position detection device 14 integrates the integrated value of the speed of the train 11 obtained from the speed generator, calculates the travel distance, detects the current position of the train 11, and outputs the detected current position information to the controller 13. To do. The controller 13 obtains a communication channel corresponding to the position information based on the database 15 from the position information received from the position detection device 14. The database 15 has a table that associates the position information of the train 11 and the communication channel as shown in FIG. 2 in advance from the communication range and communication channel of each base station.

  In FIG. 2, for example, when the current kilometer of the train 11 is within xs1 to xe1 which is the communication range of the base station 21a, the communication channel is f1, and is within xs2 to xe2 which is the communication range of the base station 21b. Sometimes the communication channel is f2. After obtaining the communication channel at the current position, the controller 13 outputs the communication channel to the mobile station 12. The mobile station 12 performs data communication with the base station using the communication channel input from the controller 13. Communication data sent from the base station to the mobile station 12 is transmitted to the data processing device 16 such as a display through the controller 13, and the data processing device performs processing such as screen output based on the transmitted communication data. I do.

  It is assumed that the current position of the train 11 is within the communication range of the base station 21a. At this time, the controller 13 obtains the communication channel f1 of the base station 21a from the current position detected by the position detection device 14 and outputs the communication channel f1 to the mobile station 12. The mobile station 12 communicates with the base station 21a through the communication channel f1. Here, it is assumed that communication is interrupted between the train 11 (mobile station 12) and the base station 21a due to the influence of disturbance or the like. If the current position of the train 11 is within the communication range of the base station 21a, the controller 13 selects the communication channel f1, and the mobile station 12 waits for communication data on the communication channel f1. After the mobile station 12 does not need to search for a communication channel and disturbance is removed, the next communication data from the base station 21a can be received without delay.

  Further, it is assumed that the train 11 moves from within the communication range of the base station 21a and the current position is within the communication range of the base station 21b. At this time, the controller 13 selects the communication channel f2, and the mobile station 12 waits for communication data on the communication channel f2. Since the train 11 performs the handover independently, the communication data from the base station 21b can be received without delay.

  Here, the communication channel is distinguished from other communication lines in some way, and is implemented by, for example, frequency division multiplexing, code division multiplexing, time division multiplexing, space division multiplexing, and combinations thereof. It can be. This embodiment is premised on a frequency multiplexing system that is basically a communication channel classification according to frequency.

  Further, as the position detection means of the position detection device, the method using the speed generator has been described as an example, but an acceleration sensor, GPS (Global Positioning System), wireless distance measurement, or the like may be used.

  Furthermore, although the kilometer which is a one-dimensional coordinate is described as an example as the current position, a two-dimensional coordinate, a three-dimensional coordinate, a section name or the like may be used.

  FIG. 3 is a diagram showing another embodiment of the mobile communication system according to the present invention.

  FIG. 3 shows a configuration when the base station has a function of selecting an appropriate communication channel from a plurality of communication channels. As shown in FIG. 4, data of a plurality of communication channels for each base station is stored in a database 15b on a train 11b which is a moving body.

  The base stations 22a and 22b in FIG. 3 perform communication by selecting an appropriate channel from a plurality of communication channels. For example, in the base station 22b, when the communication state of the communication channel f3 deteriorates due to disturbance, the base station detects this and switches to the communication channel f4 with another good communication state.

  Next, the case where the train 11b as a moving body establishes communication within the communication range of the base station 22b as it moves will be described. The controller 13 determines a base station 22b corresponding to the position information based on the database 15b from the current position information detected by the position detection device 14, and a plurality of communication channels f3 selected by the base station 22b. F4 group information is obtained. The controller 13 sets the communication channels f3 and f5 as reception channels in order, and checks which communication channel can receive information. When information can be received through the communication channel f3, the communication channel is determined to be f3 and communication with the base station 22b is established. If the communication state of the communication channel f3 deteriorates due to disturbance or the like, and the base station 22b switches the communication channel to f4, the process proceeds to the communication establishment process again. When it is confirmed that information can be received through the communication channel f4, the communication channel is determined to be f4 and communication with the base station 22b is established.

  As described above, depending on the present configuration, the train 11b can limit the communication channel to be confirmed from its current position information. Therefore, the train 11b can be used for handover due to movement or switching of the communication channel on the base station side. Communication can be established within an assumed predetermined time.

  FIG. 5 is a diagram showing another embodiment of the mobile communication system according to the present invention.

  FIG. 5 shows train communication channel selection processing when the base station transmits a recognition signal for the communication channel currently selected for each communication control period. In this embodiment, the base station communicates with one frequency for a certain period, and communication with a plurality of trains is distinguished by time-division communication slots. The apparatus configuration is shown in FIG.

  Next, a case where the base station 22b switches the communication channel from f3 to f4 will be described.

  The base station 22b outputs a recognition signal for the controller 13 to select the currently selected communication channel for each communication cycle. The recognition signal is repeatedly transmitted during the period in which the recognition signal is transmitted so that the communication channel can be recognized in a short time. Similar to the procedure described in the second embodiment, the train 11b detects its own current position, searches the database 15b for the detected position information, and determines a communication channel on which communication should be confirmed. In FIG. 5, communication channels f3 and f4 are received. When the controller 13 confirms that the recognition signal can be received by the communication channel f3, the communication channel of the mobile station 12 is fixed to f3. Communication between the base station 22b and the train 11b is established at the transmission timing from the base station 22b to the train 11b during the communication period.

  Next, communication recovery when the base station switches communication channels in the communication cycle will be described. The base station 22b switches the communication channel from f3 to f4 in the next communication cycle. The train 11b detects that communication on the communication channel f3 has been interrupted, and executes a recognition signal reception process for selecting a communication channel. Reception on the communication channel f3 is confirmed for a predetermined time or more. If the signal cannot be recognized, the reception is switched to reception on another communication channel f4. The predetermined time for reception is a plurality of repetition periods of the recognition signal. By switching to reception on the communication channel f4, the recognition signal can be received, and after confirming the signal, the communication channel is fixed at f4 and communication with the base station 22b is established.

  According to the present embodiment, since the time required for selecting a communication channel can be shortened, communication can be established within a predetermined time even when the number of communication channels per base station increases.

  In the present embodiment, the train 11b performs the recognition signal reception process again after the communication is established. However, the train 11b may receive the recognition signal every cycle. Switching from the communication standby state in which the train 11b fixes the communication channel to the reception processing state of the recognition signal is performed by switching from the end of the recognition period to the start of the recognition period of the next communication cycle as a timeout time or receiving communication from the base station If possible, a method such as switching after completion of necessary processing may be used. The train 11b can communicate through an appropriate communication channel selected by the base station every cycle by receiving the cycle recognition signal.

  FIG. 6 is a diagram showing another embodiment of the mobile communication system according to the present invention.

  FIG. 6 is a diagram showing a train communication channel selection process when a mobile station of a mobile unit communicates with a plurality of base stations in order. The apparatus configuration is shown in FIG.

  First, the case where the train 11b selects which of the base station 22a and the base station 22b communicates will be described. As described in the third embodiment, the base stations 22a and 22b output a recognition signal for the controller 13 to select the currently used communication channel during the recognition period. The train 11b receives a recognition signal output from the base station during the recognition period.

  In FIG. 6, a base station 22a whose communication range is the current position of the train 11b, not the communication channel of only one base station, and the traveling direction side of the train 11b with respect to the base station 22a The base station 22b adjacent to each other and all the communication channels that can be selected by the base station 22b are sequentially set as reception channels. When the controller 13 confirms that the recognition signal has been received by the communication channel f2 of the base station 22a, the communication channel of the mobile station 12 is fixed to f2. Thus, the train 11b communicates with the base station 22a, and communication data is transmitted and received between the base station 22a and the train 11b during the communication period.

  When the train 11b moves and the identification signal from the base station 22a cannot be received and the identification signal from the base station 22b becomes receivable, the train 11b communicates with the base station 22b, and the base station during the communication period Communication data is transmitted and received between the train 22b and the train 11b.

  According to the present embodiment described above, the train 11b can be quickly handed over even if the handover position at which the communication range of the base station 22a and the base station 22b is switched is different from the position information stored in the database 15.

  Here, the base station that is the communication partner of the train 11b includes the base station whose current position of the train 11b is in the communication range and its adjacent base station, and the base station whose current position of the train 11b is the communication range and the two of them. You may select suitably like the base station to the next.

  The selection method may be selected based on a database, or may be selected based on the designation signal received from the base station.

  Further, the train 11b may execute the recognition signal reception process when a communication interruption is detected as in the third embodiment or may be performed every cycle.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 7: shows the schematic of the train control system by radio | wireless of Example 5 of this invention. In FIG. 7, 71 and 72 are base station 1 and base station 2, 73 is a train, 74 is a traveling path, 75 is an on-board controller, 76 is a communication device, 77 is a train position detecting means, 78 is a base station / position.・ It is a correspondence database of communication frequencies.

  The base station 71 and the base station 72 are arranged along the traveling path 74 of the train 73 and constitute a part of the ground device. The train 73 is equipped with an on-board control device 75, a communication device 76 that transmits and receives radio, a train position detection unit 77, and a base station / position / communication frequency correspondence database 78, and moves on the traveling road 74. The base station 71 or the base station 72 and the communication device 76 on the train communicate the train control information with each other. In order to prevent interference between the base station 71 and the base station 72, the base station 71 and the base station 72 include Different communication frequency groups (f1, f2) and (f3, f4) are assigned and communicate with the communication device 76 on the train 73 by the communication frequency in the communication frequency group selected by the instruction from the management station.

  In response to the movement of the train 73 on the travel path 74, the train position detection means 77 detects the position of the train 73 on the travel path 74. As the train position detecting means 77, for example, a means for detecting the rotation angle of the wheel of the train 73, integrating this and converting it into a distance, and detecting the position can be adopted. Based on the position information detected by the train position detection means 7, the on-board controller 75 controls the base station / position / communication frequency correspondence database 78 to search for the base station 72 corresponding to the position of the train 73. Further, a communication frequency group (for example, communication frequencies f3 and f4) corresponding to the searched base station 72 is searched.

  The communication device 76 selects the communication frequencies f3 and f4 searched by the correspondence database 78 as search frequencies, and starts wireless communication with the base station 72 within this search range. If the communication device 76 receives beacon information of the communication frequency f3 from the base station 72 during the search, the control information addressed to each train is communicated between the communication device 76 and the base station 72 using the communication frequency f3. If the communication device 76 receives the beacon information of the communication frequency f4 from the base station 72 during the search, the communication frequency f4 is used, and then the control information addressed to each train is communicated between the communication device 76 and the base station 72. Do.

  Of the communication frequency groups (f1, f2) and (f3, f4) assigned to the base station 71 and the base station 72, the communication frequency used by each of the base station 71 and the base station 72 is described above. As described above, the upper management station that manages the base station 71 and the base station 72 gives an instruction. In the fifth embodiment, an example of two base stations, that is, the base station 71 and the base station 72 is shown, but the number of base stations is not limited to two, and a plurality of base stations can be used. In the fifth embodiment, two communication frequencies are assigned to the base station 71 and the base station 72, respectively. However, the number of communication frequencies assigned to each base station is not limited to two, and a plurality of communication frequencies are assigned. Can do.

  FIG. 8: shows the schematic of the train control system by radio | wireless of Example 6 of this invention. In FIG. 8, 81 and 82 are base stations AP1,3,5, base stations AP2,4,6,83 are trains (001,002), 84 is a traveling road, and 85 is a radio communication device STA1 to STA4 on the train. , 86 is a channel group (CH-Gr).

  The base station 81 (AP1, AP3, AP5) is arranged on the left side in the traveling direction of the train 83 (001, 002) along the travel path 84, and the base station 82 (AP2, AP4, AP6) is along the travel path 84. The train 83 (001, 002) is located on the right side of the traveling direction, and the train 83 (001, 002) is located on the left side of the traveling direction with the base station 81 (AP1, AP3, AP5) and on the left side of the train 83. The mounted wireless communication devices STA1 and STA3 perform wireless communication, and are mounted on the right side of the train 83 and the base station 82 (AP2, AP4, AP6) arranged on the right side in the traveling direction of the train 83 (001, 002). The wireless communication devices STA2 and STA4 perform wireless communication.

  Further, the wireless communication devices STA3 and STA4 mounted on the train 83 are mounted on the rear side in the traveling direction of the train 83, perform wireless communication with the base stations (AP1, AP2) behind the train 83, and on the train 83. The mounted wireless communication devices STA1 and STA2 are mounted in front of the traveling direction of the train 83, and wirelessly communicate with the base stations (AP3 and AP4) ahead of the train 83 and the base stations (AP5 and AP6) further ahead. .

  A channel group (CH-Gr) 85 is assigned to each of the base stations 81 (AP1, AP3, AP5) and the base stations 82 (AP2, AP4, AP6), and each channel group of each base station (AP1 to AP6). (CH-Gr) 85 includes, for example, AP1 (CH1, CH41), AP2 (CH21, CH61), AP3 (CH4, CH44), AP4 (CH24, CH64), AP5 (CH7, CH47) as shown in the figure. , AP6 (CH27, CH67)) is assigned.

In FIG. 8, the setting of the optimal radio frequency (CH) in each base station and the connection between the radio communication apparatuses STA1 to STA4 mounted on the train 83 and the base station are performed according to the following procedure.
[Optimum radio frequency (CH) setting]
(1) Each base station AP sets a channel group (CH-Gr) 86 that does not interfere with each other between adjacent base stations.
(2) Each base station performs electric field strength check every cycle, and transmits the electric field strength check result to the upper management station.
(3) The management station that has received the check result of the electric field strength from each base station selects the optimum radio frequency (CH) excluding the radio frequency (CH) including noise whose electric field strength is equal to or greater than a predetermined value, Notify the base station.
(4) Each base station transmits the next information at the optimum radio frequency (CH). (Example: Control information for train 001: AP1,2,3,4,5,6 Train 002: AP1,2,3,4)

[Connection between wireless communication apparatus STA and base station AP]
(5) The wireless communication device 85 (STA1 to STA4) mounted on the train 83 performs simultaneous communication with each base station of the ground device. (Redundant configuration by 4CH multiplexing.)
(6) The wireless communication device 88 (STA1 to STA4) mounted on the train 83 fixes the connectable base station AP. (STA1,3: AP1, AP3, AP5, ..., STA2,4: AP2, AP4, AP6 ...)
(7) Control information is transmitted and received in a time-sharing manner between the wireless communication device 85 mounted on the train 83 and the base station AP whose connection is fixed.

  FIG. 9 is an explanatory diagram of the procedure of the wireless train control method according to the seventh embodiment of the present invention. In FIG. 9, 91 is a management station (AP master), 92 is a base station AP3, and 93 is a radio communication device (STA1) of a train 81.

The procedure of the wireless train control method is performed as follows.
[Optimum radio frequency (CH) setting]
(1) The base station 92 (e.g., AP3) transmits beacon information for a certain period of time using the currently used radio frequency (CH4) at the beginning of each cycle.
(2) The base station 92 (for example, AP3) transmits beacon information for a certain period of time, and then transmits control information addressed to each train 81 by a time division method.
(3) The base station 92 (e.g., AP3) performs electric field strength scan after transmitting the control information by the time division method. (Example: CH4, CH44 scan)
(4) The base station 92 (for example, AP3) transmits field strength data, which is the result of the field strength scan, to the management station 91 (AP master).
(5) The management station 91 (AP master) that has received the electric field strength data determines the next-use radio frequency (eg, CH44), and makes the base station 92 (eg, AP3) the next-use radio frequency (eg, CH44). To be notified.

[Connection between wireless communication apparatus STA and base station AP]
(6) The radio communication device (STA1) of the train 81 determines the search radio frequency (CH) based on the position information in the base station / position / communication frequency correspondence database and the base station identification information (AP-ID information). select. (Wireless communication apparatus on train 001: STA1 (mounted on the front and left side of the train): Search CH: CH4, CH7, CH44, CH47) of base station AP3 on the left side and AP5 on the left side is the search CH. )
(7) The radio communication device (STA1) of the train 11 receives beacon information during the search for the radio frequencies (CH4, CH7, CH44, CH47), and the radio frequency (CH) of the beacon information is the radio frequency (CH44). If so, the radio frequency (CH) of the radio communication apparatus (STA1) is fixed to CH44.
(8) The radio communication device (STA1) of the train 81 uses the fixed radio frequency (CH44) to receive control information addressed to the train 81 by a time division method, returns the train position information, and then performs the next CH search. To implement.

  INDUSTRIAL APPLICABILITY The present invention can be used for a signal security system in a moving body such as a railroad, a monorail, and a tram (LRT: Light Rail Transit). In cooperation with the position detection device, the communication reliability of a mobile phone, TV / radio, etc. can be improved.

It is the figure which showed one Example of the mobile communication system which concerns on this invention. It is the figure which showed an example of the table memorize | stored in the database of FIG. It is the figure which showed the other Example of the mobile communication system which concerns on this invention. It is the figure which showed an example of the table memorize | stored in the database of FIG. It is the figure which showed an example of the communication channel selection process of the mobile communication system which concerns on this invention. It is the figure which showed the other example of the communication channel selection process of the mobile communication system concerning this invention. FIG. 7 is a schematic diagram of a wireless train control system according to the fifth embodiment of the present invention. FIG. 8 is a configuration diagram of a wireless train control system according to the sixth embodiment of the present invention. FIG. 9 is an explanatory diagram of the procedure of the wireless train control method according to the seventh embodiment of the present invention. FIG. 10 is a schematic diagram of a conventional train control system using radio.

Explanation of symbols

11 train 11b train 12 mobile station 13 controller 14 position detector 15 database 15b database 16 data processor 21a base station 21b base station 22b base station 71 base station 72 base station 73 train 74 travel path 75 on-board controller 76 communication device 77 Train position detection means 78 Base station / position / communication frequency correspondence database 81 Base stations AP1, 3, 5
82 Base station AP2,4,6
83 Train (001,002)
84 Runway 85 Wireless communication devices STA1 to STA4 on the train
86 Channel Group (CH-Gr)
91 Management station (AP master)
92 Base station AP3
93 Train wireless communication device (STA1)

Claims (8)

A plurality of mobile stations mounted on the front and rear of the traveling direction of a train traveling on a predetermined route and a plurality of base stations installed along a predetermined route and set with different communication frequencies. In a wireless control method for performing wireless communication between
In the plurality of base stations, a plurality of communication frequencies that do not interfere with each other are set by changing over time,
The plurality of base stations output a recognition signal for each communication cycle,
Wherein the plurality of mobile stations receives the recognition signal of each cycle, the communication frequency before Kimoto Chikyoku installed in the predetermined path along the road,
Wherein the particular radio frequency on-board mobile station receiving the recognition signal to the front of the train, and transmits and receives control information to and from the front of the base station than the train corresponding to the particular radio frequency, wherein the particular radio frequencies onboard mobile station receiving the recognition signal at the rear of the train, characterized in that it transmits and receives control information to and from the rear of the base station than the train that corresponds to the specific radio frequency A wireless control method. A plurality of mobile stations mounted on the front and rear of the traveling direction of a train traveling on a predetermined route and a plurality of base stations installed along a predetermined route and set with different communication frequencies. In a wireless control method for performing wireless communication between
In the plurality of base stations, a plurality of communication frequencies that do not interfere with each other are set by changing over time,
The plurality of base stations output a recognition signal for each communication cycle,
The plurality of mobile stations receive the recognition signals of the communication frequencies of the plurality of base stations installed along the predetermined route every cycle,
Wherein the particular radio frequency on-board mobile station receiving the recognition signal to the front of the train, and transmits and receives control information to and from the front of the base station than the train corresponding to the particular radio frequency, wherein the particular radio frequencies onboard mobile station receiving the recognition signal at the rear of the train, characterized in that it transmits and receives control information to and from the rear of the base station than the train that corresponds to the specific radio frequency A wireless control method. A plurality of mobile stations mounted on the front and rear of the traveling direction of a train traveling on a predetermined route and a plurality of base stations installed along a predetermined route and set with different communication frequencies. In a wireless control method for performing wireless communication between
In the plurality of base stations, a plurality of communication frequencies that do not interfere with each other are set by changing over time,
The plurality of base stations output a recognition signal for each communication cycle,
The plurality of mobile stations receive the recognition signals of the plurality of communication frequencies of the plurality of base stations corresponding to the positions of the plurality of mobile stations using a correspondence database of the base stations and the communication frequencies,
Control by a time division method between a base station ahead of the train corresponding to the specific radio frequency and a plurality of mobile stations mounted in front of the train by a specific radio frequency receiving the recognition signal Transmitting and receiving information, and transmitting and receiving control information in a time division manner between a base station behind the train corresponding to the specific radio frequency and a plurality of mobile stations mounted behind the train. A wireless control method. Wireless communication between multiple mobile stations mounted on the left and right of the traveling direction of a train traveling on a predetermined route and multiple base stations installed along a predetermined route and set with different communication frequencies. In a wireless control system that performs communication,
In the plurality of base stations, a plurality of communication frequencies that do not interfere with each other are set by changing over time ,
The communication cycle includes a recognition period for searching for a communication frequency based on a recognition signal output from the base station,
The plurality of mobile stations search for the communication frequency of the base station installed along the predetermined route in the recognition period every cycle ,
The mobile station mounted on the left side with respect to the traveling direction of the train is controlled with the base station located on the left side with respect to the traveling direction of the train corresponding to the specific radio frequency according to the specific radio frequency searched. A mobile station that transmits and receives information and that is mounted on the right side with respect to the traveling direction of the train is a base station that is on the right side with respect to the traveling direction of the train corresponding to the specific radio frequency according to the searched specific radio frequency. A wireless control system characterized by transmitting and receiving control information to and from the system . Wireless communication between multiple mobile stations mounted on the left and right of the traveling direction of a train traveling on a predetermined route and multiple base stations installed along a predetermined route and set with different communication frequencies. In a wireless control system that performs communication,
In the plurality of base stations, a plurality of communication frequencies that do not interfere with each other are set by changing over time ,
The communication cycle includes a recognition period for searching for a communication frequency based on a recognition signal output from the base station,
The plurality of mobile stations search for communication frequencies of the plurality of base stations installed along the predetermined route in the recognition period in each cycle ,
The mobile station mounted on the left side with respect to the traveling direction of the train is controlled with the base station located on the left side with respect to the traveling direction of the train corresponding to the specific radio frequency according to the specific radio frequency searched. A mobile station that transmits and receives information and that is mounted on the right side with respect to the traveling direction of the train is a base station that is on the right side with respect to the traveling direction of the train corresponding to the specific radio frequency according to the searched specific radio frequency. wireless control system, characterized by sending and receiving control information to and from. Wireless communication between multiple mobile stations mounted on the left and right of the traveling direction of a train traveling on a predetermined route and multiple base stations installed along a predetermined route and set with different communication frequencies. In a wireless control system that performs communication,
In the plurality of base stations, a plurality of communication frequencies that do not interfere with each other are set by changing over time ,
The communication cycle includes a recognition period for searching for a communication frequency based on a recognition signal output from the base station,
The plurality of mobile stations search the plurality of communication frequencies of the plurality of base stations corresponding to the positions of the plurality of mobile stations using a correspondence database of the base station and the communication frequency in the recognition period ,
The plurality of movements mounted on the left side with respect to the traveling direction of the train and the base station on the left side with respect to the traveling direction of the train corresponding to the plurality of specific wireless frequencies by the searched plurality of wireless frequencies Control information is transmitted and received between the stations in a time-sharing manner, and mounted on the right side with respect to the traveling direction of the train and the base station on the right side with respect to the traveling direction of the train corresponding to the specific plurality of radio frequencies A radio control system characterized by transmitting and receiving control information to and from a plurality of mobile stations in a time division manner . In the radio | wireless control method in any one of Claim 1 thru | or 3 ,
When there are a plurality of communication frequencies that have received the recognition signal,
Correspondence database of position and communication frequency,
Or a designated signal output by the plurality of base stations,
Or the electric field strength of the communication frequency
A radio control method, comprising: transmitting and receiving control information between the base station and the mobile station corresponding to a radio frequency selected based on the radio frequency . The radio control system according to any one of claims 4 to 6 ,
When there are a plurality of searched communication frequencies,
Correspondence database of position and communication frequency,
Or a designated signal output by the plurality of base stations,
Or the electric field strength of the communication frequency
Wireless control system, characterized by sending and receiving control information to and from the base station corresponding to the selected radio frequency to the mobile station based on.

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