JP2009164989A - Mobile station device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem that, in a conventional radio communication system, each mobile station device has to individually package therein all receivers corresponding to a plurality of different radio methods in order to deal with moving in blocks of the plurality of different radio methods, a mount space for the number of receivers to be packaged is required and further, power consumption is increased. <P>SOLUTION: A mobile station device 100 packages, in a communication unit 50, first to third receiving sections 17-19 including functions corresponding to a plurality of different radio systems, respectively. Based on reception information, from a control unit 23, about the receiving sections normally performing reception from receiving states of the receiving sections 17-19 and array information from a storage unit 25 storing the order in which radio systems are arrayed, a determination unit 24 determines a radio method for a block in which a mobile station 12 exists, and a radio method for an adjacent block. The control unit 23 allows the communication unit 50 to select the radio method determined by the determination unit 24 to be selected. Thus, radio methods of the communication unit 50 are switched in accordance with a change of radio systems. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a radio system (for example, a train radio system) in which a mobile station moving between a plurality of radio systems having different radio systems communicates with a base station.

  In the first prior art, a mobile station is equipped with a plurality of receivers corresponding to the respective radio systems, operates each receiver, constantly monitors the radio reception state, and performs a normal reception of the radio system. By selecting the method, system switching is realized (see, for example, Patent Document 1).

  In the second prior art, each mobile station is equipped with a single receiver that can be adapted by changing the setting in each radio system. The mobile station is adapted to the radio system of the existing base station. By operating, system switching is realized (for example, refer to Patent Document 2).

JP 2001-267777 A JP 2006-324958 A

  In the first prior art, the mobile station has to install a number of receivers corresponding to different types of wireless systems in which the mobile station moves and must operate each receiver. The wireless system in which the mobile station moves There is a problem that as the number of types increases, the number of types of receivers increases, and the mounting space and power consumption increase accordingly.

  In the second prior art, it is necessary to switch one receiver in accordance with the radio system of the base station in which the mobile station exists, and it takes time to determine the system switching and change the setting of the receiver. There is a problem that the interruption time of a call becomes long. Moreover, since whether or not the receiver after the setting change matches the existing wireless system is finally confirmed by the operation of the receiver after the setting change, the second conventional technique is the first conventional technique. It can be said that this method has a risk of erroneous determination of system switching.

  The present invention has been made in view of such a technical situation, and an object of the present invention is to install different radio systems in a mobile station without mounting all receivers corresponding to the type of mobile radio system in the mobile station. A mobile station device that can continue to communicate with the base station even if it travels across the network, and it is possible to reduce the size and power consumption, and to realize a reliable wireless system switchover with a shorter instantaneous interruption time. It is in.

  The subject matter of the present invention is equipped in a mobile station that moves in a plurality of jurisdictions each having a plurality of base stations that communicate with each other using different radio communication schemes, and each of the plurality of jurisdictions A mobile station apparatus that communicates with a base station in a jurisdiction where the mobile station exists using the wireless communication system of the base station, wherein the plurality of wireless communication systems can be selected A communication unit including a plurality of receiving units, a storage unit storing arrangement information indicating in what order the plurality of jurisdictions are arranged, the arrangement information from the storage unit, and the communication unit Determining the jurisdiction area in which the mobile station currently exists in the plurality of jurisdictions based on the reception information including the radio communication schemes normally received from the reception state of the plurality of radio communication schemes The mobile station is currently A determination unit that determines a wireless communication method of the jurisdiction area that exists and a wireless communication method of a jurisdiction area adjacent to the jurisdiction region; and a wireless communication method that is normally received from the reception state of the communication unit A control unit that generates and outputs the reception information to the determination unit, and that causes the plurality of reception units to select each wireless communication method determined by the determination unit based on the array information and the reception information. It is characterized by.

  According to the subject matter of the present invention, it is not necessary to mount all of the receiving units individually corresponding to all the wireless communication schemes, power saving and device downsizing can be achieved, and The system can be switched reliably with a short instantaneous interruption time during movement.

  Hereinafter, various embodiments of the subject of the present invention will be described in detail along with the effects and advantages thereof with reference to the accompanying drawings.

(Embodiment 1)
Hereinafter, this embodiment will be described in detail with reference to FIGS.

  In the present embodiment, mobile station apparatus 100 is equipped in mobile station 12. The mobile station 12 includes (1) a first jurisdiction area under the jurisdiction of a first base station that performs communication using the first radio communication system, and (2) a second radio communication system that is different from the first radio communication system. A second jurisdiction area under the jurisdiction of the second base station that performs communication using the (3) first communication that uses a third wireless communication method different from the first wireless communication method and the second wireless communication method described above. A third jurisdiction area under the jurisdiction of the three base stations; and (4) a fourth communication that uses a fourth wireless communication method different from the first wireless communication method, the second wireless communication method, and the third wireless communication method. Move to the fourth jurisdiction area under the jurisdiction of the base station. Therefore, the mobile station device 100 installed in the mobile station 12 moves with the mobile station 12 in each jurisdiction area of the first jurisdiction area, the second jurisdiction area, the third jurisdiction area, and the fourth jurisdiction area. Become. FIG. 1 shows that the first radio scheme section is in the first jurisdiction area, the second radio scheme section is in the second jurisdiction area, the third radio scheme section is in the third jurisdiction area, and the fourth radio scheme section is in the fourth jurisdiction area. An example corresponding to each is shown.

  In the present embodiment, when the mobile station apparatus 100 moves back and forth between the first radio scheme section, the second radio scheme section, the third radio scheme section, and the fourth radio scheme section, the mobile station apparatus 100 A feature is that a wireless communication method (hereinafter also referred to as “wireless method”) corresponding to the wireless communication method is automatically selected. In the train radio communication system described as an example in the following, the mobile station device 100 can correspond to each of different radio systems (first radio system, second radio system, third radio system, and fourth radio system). 3 devices (reception unit and transmission unit, which will be described later) are installed, and each device switches the wireless system by changing the setting of software or logic circuit installed in the device according to the change of the wireless system Only the radio scheme in the radio scheme section in which the mobile station apparatus 100 currently exists and the radio scheme in the radio scheme section adjacent to the radio scheme section in which the mobile station apparatus 100 currently exists are operated.

  FIG. 1 is a diagram schematically showing a configuration of a train radio system according to the present embodiment. In FIG. 1, a train radio system communicates with a first base station 1 that communicates with a first radio system, a second base station 2 that communicates with a second radio system, and a third radio system with a first radio station. 3 base stations 3, a fourth base station 4 that communicates with the fourth radio system, and a mobile station device 100 that communicates with the first base station, the second base station, the third base station, or the fourth base station Mobile station 12 (train). In the first base station 1, a leaky coaxial cable (hereinafter referred to as “LCX”) 5 is laid on both sides of the line on which the mobile station 12 travels, and the transmitted radio wave of the first base station 1 or the mobile station 12 ( The transmission radio wave of the mobile station apparatus 100) is carried. Similarly, LCX6 is a transmission wave of the second base station or a transmission wave of the mobile station 12 (mobile station apparatus 100), and LCX7 is a transmission wave of the third base station or a transmission wave of the mobile station 12 (mobile station apparatus 100). LCX8 carries the transmission wave of the fourth base station or the transmission radio wave of mobile station 12 (mobile station apparatus 100).

  The mobile station apparatus 100 is equipped in the mobile station 12 and includes a first radio scheme section managed by the first base station 1, a second radio scheme section managed by the second base station 2, and a third base station 3. Move between the third radio system section managed by the fourth base station 4 and the fourth radio system section managed by the fourth base station 4.

  A zone boundary 9 shown in FIG. 1 is an area where the mobile station device 100 switches the radio system to the first radio system or the second radio system. The zone boundary 10 is an area where the mobile station device 100 switches the radio system to the second radio system or the third radio system. The zone boundary 11 is an area where the mobile station device 100 switches the radio system to the third radio system or the fourth radio system. When the mobile station 12 moves from the first radio scheme section to the second radio scheme section, the mobile station device 100 switches the radio scheme to the second radio scheme at the zone boundary 9. Conversely, when the mobile station 12 moves from the second radio scheme section to the first radio scheme section, the mobile station device 100 switches the radio scheme to the first radio scheme at the zone boundary 9. Further, when the mobile station 12 moves from the second radio scheme section to the third radio scheme section, the mobile station device 100 switches the radio scheme to the third radio scheme at the zone boundary 10. Conversely, when the mobile station 12 moves from the third radio scheme section to the second radio scheme section, the mobile station device 100 switches the radio scheme to the second radio scheme at the zone boundary 10. Further, when the mobile station 12 moves from the third radio scheme section to the fourth radio scheme section, the mobile station device 100 switches the radio scheme to the fourth radio scheme at the zone boundary 11. Conversely, when the mobile station 12 moves from the fourth radio scheme section to the third radio scheme section, the mobile station device 100 switches the radio scheme to the third radio scheme at the zone boundary 11.

  Here, each of the zone boundaries 9, 10 and 11 corresponds to an area of several tens of meters where radio waves from both LCXs adjacent to each other across the zone boundary overlap. In contrast, the distance between the end portions of both adjacent LCXs is only a few tens of centimeters.

  Note that switching between wireless systems may be performed in an area other than the zone boundary 9, the zone boundary 10, or the zone boundary 11.

  Next, the configuration of the mobile station apparatus 100 will be described with reference to FIG. FIG. 2 is a block diagram showing a configuration of mobile station apparatus 100. The mobile station device 100 is installed in a mobile station 12 that is a train. As illustrated in FIG. 2, the mobile station device 100 includes an antenna 13, a communication unit 50, a control unit 23, a determination unit 24, and a storage unit 25. The communication unit 50 includes a duplexer 14, a distributor 15, a combiner 16, a first receiver 17, a second receiver 18, a third receiver 19, a first transmitter 20, 2 transmission part 21 and 3rd transmission part 22 are provided. The operation of each part will be described below.

  The duplexer 14 separates the transmission signal and the reception signal. The distributor 15 distributes the received signal from the duplexer 14. The combiner 16 combines the three received transmission signals and transmits the combined signal to the demultiplexer 14.

  The first receiver 17, the second receiver 18, and the third receiver 19 receive radio waves leaking from the LCX 5, LCX 6, LCX 7, or LCX 8. On the other hand, the 1st transmission part 20, the 2nd transmission part 21, and the 3rd transmission part 22 transmit an electromagnetic wave to LCX5 or LCX6 or LCX7 or LCX8.

  The control unit 23 controls the first reception unit 17, the second reception unit 18, the third reception unit 19, the first transmission unit 20, the second transmission unit 21, and the third transmission unit 22 and delivers signals.

  The determination unit 24 determines whether the first wireless method, the second wireless method, the third wireless method, and the fourth wireless method are based on both signals of “reception information” from the control unit 23 and “array information” from the storage unit 25. It is determined which method should be selected, and the determination result is notified to the control unit 23.

  The storage unit 25 stores that the jurisdiction area is arranged in the order of the first radio scheme section, the second radio scheme section, the third radio scheme section, and the fourth radio scheme section. The determination unit 24 is notified.

  Here, each of the first receiving unit 17, the second receiving unit 18, the third receiving unit 19, the first transmitting unit 20, the second transmitting unit 21, and the third transmitting unit 22 is configured by switching software to be installed. The first wireless method, the second wireless method, the third wireless method, or the fourth wireless method can be switched (selected). In place of the configuration of the first transmission unit 20, the second transmission unit 21, and the third transmission unit 22, the transmission units of the first wireless method, the second wireless method, the third wireless method, and the fourth wireless method are provided. You may employ | adopt the structure mounted separately. In addition, the first transmitter 20 can switch (select) the first radio system, the second radio system, the third radio system, and the fourth radio system by switching the software implemented by the first transmitter 20. If it has the structure to obtain, it is good also as a structure which does not mount the 2nd transmission part 21 and the 3rd transmission part 22 in the moving apparatus 100. FIG.

  Next, the operation of the mobile station apparatus 100 will be described with reference to FIG. Here, FIG. 3 is a flowchart showing the operation of the mobile station apparatus 100.

  First, in step S10, the mobile station device 100 receives radio waves received by the antenna 13 via the duplexer 14 and the distributor 15, the first receiving unit 17, the second receiving unit 18, and the third receiving unit. Is transmitted to the unit 19.

  In the first radio system section, the received signal can be normally demodulated if the first receiver 17 or the second receiver 18 or the third receiver 19 is a receiver of the first radio system. When the receiving unit is other than the first wireless system, the received signal cannot be demodulated normally. Similarly, in each of the second radio scheme section, the third radio scheme section, and the fourth radio scheme section, the first receiver 17 or the second receiver 18 or the third receiver 19 determines the radio scheme of the section. If the receiving unit matches, the received signal can be demodulated normally. However, if the receiving unit does not match, the received signal cannot be demodulated normally. That is, any one of the first receiving unit 17, the second receiving unit 18, and the third receiving unit 19 needs to match the radio system in the section where the mobile station device 100 exists. Furthermore, any one of the first transmission unit 20, the second transmission unit 21, and the third transmission unit 22 needs to match the radio system of the section where the mobile station device 100 exists.

  In the next step S20, the control unit 23 detects the radio system that is normally demodulated (received) from the reception states of the first receiving unit 17, the second receiving unit 18, and the third receiving unit 19. The reception information of the wireless system is output to the determination unit 24.

  In step S <b> 30, the determination unit 24 includes “reception information” from the control unit 23, and the jurisdiction area from the storage unit 25 is the first radio scheme section, the second radio scheme section, the third radio scheme section, and “Array information” indicating that the fourth wireless system sections are arranged in the order is input. Then, the determination unit 24 detects the radio scheme section where the mobile station apparatus 100 exists based on the above “reception information” and “array information”, and the radio of the radio scheme section where the mobile station apparatus 100 exists is determined. The system and the wireless system in the wireless system section adjacent to the wireless system section in which the mobile station apparatus 100 exists are determined, and the determination result is notified to the control unit 23.

  In step S40, the control unit 23, based on the determination result notified from the determination unit 24, the first receiving unit 17, the second receiving unit 18, the third receiving unit 19, the first transmitting unit 20, the second Radio system switching control is performed for each of the transmission unit 21 and the third transmission unit 22. As a result, the radio scheme in the radio scheme section where the mobile station device 100 exists and the radio scheme in the radio scheme section adjacent to the radio scheme section are selected.

  In step S50, the first receiving unit 17, the second receiving unit 18, the third receiving unit 19, the first transmitting unit 20, the second transmitting unit 21, and the third transmitting unit are selected by the selection process in step S40. Any one of the reception unit and the transmission unit in 22 operates in the wireless system in the wireless system section in which the mobile station device 100 exists (transmits and receives signals in the wireless system). In addition, among the receivers and transmitters other than the one set of receivers and transmitters, any two sets of receivers and transmitters are respectively in the radio scheme section in which the mobile station device 100 exists. It operates in the wireless system of the adjacent wireless system section (reception is detected in the wireless system of the adjacent wireless system section). Accordingly, the mobile station device 100 includes the first base station 1 in the first radio scheme section, the second base station 2 in the second radio scheme section, the third base station 3 in the third radio scheme section, and the fourth base station. Bidirectional communication with the fourth base station 4 can be performed in the wireless system section. Moreover, the mobile station apparatus 100 starts from the first radio scheme section to the second radio scheme section, from the second radio scheme section to the third radio scheme section, from the third radio scheme section to the fourth radio scheme section, and from the fourth radio scheme section. The movement from the third radio scheme section, the third radio scheme section to the second radio scheme section, and the second radio scheme section to the first radio scheme section can be detected.

  In the determination by the determination unit 24 and the switching of the wireless method by the control unit 23 in steps S30 and S40, the wireless method selection in the adjacent wireless method section is performed by the first receiving unit 17 or the second receiving unit 18 or Only the third receiving unit 19 may be used (since the transmitting unit is not necessary), and the first transmitting unit 20, the second transmitting unit 21, and the third transmitting unit 22 are configured with the wireless method of the adjacent wireless method section. It is not necessary to select.

  In addition, in the determination by the determination unit 24 and the switching of the wireless method by the control unit 23 in steps S30 and S40, when there is only one adjacent wireless method section, the first reception unit 17 and the second reception Any one of the unit 18, the third receiver 19, the first transmitter 20, the second transmitter 21, and the third transmitter 22 (receiver and transmitter) is connected to the radio in the adjacent radio scheme section. It may operate in a manner.

  In addition, in the determination by the determination unit 24 in step S30 and step S40 and the radio system switching control by the control unit 23, the control unit 23 selects the first radio system in each of the transmission units 20-22. All of the transmission unit 20 to the third transmission unit 22 instruct the transmission units 20 to 22 to operate in the radio scheme (the same radio scheme) of the radio scheme section in which the mobile station device 100 currently exists. May be.

  Below, with reference to FIG. 4, the content described by said step S10-S50 is described more concretely. Here, FIG. 4 is a diagram schematically showing the switching of the wireless system.

  First, in FIG. 4, consider a case where the mobile station 12 (mobile station apparatus 100) moves from the second radio scheme section to the third radio scheme section. When the mobile station 12 exists in the second radio system section, the determination unit 24 moves at the present time based on the “reception information” from the control unit 23 and the “array information” from the storage unit 25. It is determined that the station 12 is in the second radio scheme section and the first radio scheme section or the third radio scheme section moving at the next time point is adjacent to the second radio scheme section. Based on this determination, the determination unit 24 determines that the second wireless method to be transmitted / received bidirectionally at the present time and the first wireless method and the third wireless method to be transmitted / received at the next time point should be selected, The determination result is notified to the control unit 23. Upon receiving this determination notification, the control unit 23 sets one set of the second reception unit 18 and the second transmission unit 21 to the second radio system mode, and sets one set of the first reception unit 17 and the first transmission unit 20 to the first. The wireless system mode is instructed to set the third receiver 19 and the third transmitter 22 to the third wireless system mode. With these operations, the mobile station device 100 can perform bidirectional communication with the second base station 2 in the second radio scheme section. Moreover, the mobile station apparatus 100 can monitor the reception status for the adjacent first radio scheme section and third radio scheme section.

  Next, in FIG. 4, a case where the mobile station 12 moves to the third radio system section side will be described. That is, when the mobile station 12 (mobile station device 100) moves from the second radio scheme section to the area of the zone boundary 10, the second receiver 18 that adopts the second radio scheme uses the second radio scheme. The transmission radio wave of the base station 2 cannot be received. Therefore, the control unit 23 of the mobile station device 100 detects that the reception state of the second reception unit 18 has not been demodulated normally. In response to this detection, the control unit 23 notifies the determination unit 24 of “reception information” indicating that the second wireless method cannot be normally received, and also stops transmission to the second transmission unit 21. Instruct. The 2nd transmission part 21 which received this stops transmission.

  Next, in FIG. 4, a case where the mobile station 12 moves within the third radio system section will be described. That is, when the mobile station 12 (mobile station apparatus 100) moves to the third radio scheme section, the third receiver 19 that adopts the third radio scheme transmits the radio wave of the third base station 3 that adopts the third radio scheme. Receive. Therefore, the control unit 23 of the mobile station device 100 detects that the reception state of the third reception unit 19 can be normally demodulated. For this reason, the control unit 23 notifies the determination unit 24 of “reception information” indicating that the third wireless method is normally received. Based on the “reception information” from the control unit 23 and the “arrangement information” from the storage unit 25, the determination unit 24 is in the third radio scheme section at the present time and moves at the next time point. It is determined that the fourth radio scheme section or the second radio scheme section to be adjacent to the third radio scheme section. Based on this determination, the determination unit 24 determines that the third wireless method to be transmitted / received bidirectionally at the current time point and the fourth wireless method and the second wireless method to be transmitted / received at the next time point should be selected. The control unit 23 is notified of the determination result. Upon receiving this determination notification, the control unit 23 sets the third reception unit 19 and the third transmission unit 22 to the third wireless mode, and sets the first reception unit 17 and the first transmission unit 20 to the fourth set. The wireless system mode is instructed to set the second receiver 18 and the second transmitter 21 to the second wireless system mode. With these radio system switching controls, the mobile station apparatus 100 can perform bidirectional communication with the third base station 3 in the third radio system section. Moreover, the mobile station apparatus 100 can monitor the reception status for the second radio system section and the fourth radio system section adjacent to the third radio system section.

  Next, a case where the mobile station 12 (the mobile station apparatus 100) moves from the third radio scheme section to the fourth radio scheme section will be described. First, when the mobile station 12 moves to the area of the zone boundary 11, the third receiving unit 19 adopting the third radio system cannot receive the transmission radio wave of the third base station 3, and the control unit 23 When it is detected that the reception state of the reception unit 19 has not been demodulated normally, the reception information is notified to the determination unit 24 and the third transmission unit 22 is instructed to stop transmission. Next, when the mobile station 12 moves to the fourth wireless method section, the first receiving unit 17 adopting the fourth wireless method receives the transmission radio wave of the fourth base station 4, and as a result, the control unit 23 1 Detects that the reception state of the receiving unit 17 can be normally demodulated, and transmits reception information indicating that the signal of the fourth wireless system is normally received to the determination unit 24. Based on the reception information from the control unit 23 and the arrangement information from the storage unit 25, the determination unit 24 is present in the fourth radio scheme section at the present time, and moves at the next time point. It is determined that the adjacent wireless system section is the third wireless system section. Based on this determination, the determination unit 24 determines that the fourth wireless method to be transmitted / received bidirectionally at the current time point and the third wireless method to be transmitted / received at the next time point should be selected. The determination result is transmitted to the control unit 23. The control unit 23 that has received the determination result switches the operation mode of the first reception unit 17 and the first transmission unit 20 from the first radio system mode to the fourth radio system mode, and operates in the second radio system mode. The second receiving unit 18 and the second transmitting unit 21 are maintained in the second wireless mode, and the operation modes of the third receiving unit 19 and the third transmitting unit 22 are maintained in the third wireless mode. By selecting the first receiver 17 and the first transmitter 20 in the fourth radio system mode to be bidirectionally transmitted / received, the third base station 3 is connected to the fourth base station 4 to perform bidirectional communication. It becomes possible. In addition, the mobile station apparatus 100 can monitor the reception state for the adjacent third radio scheme section.

  Next, the case where the mobile station 12 (the mobile station apparatus 100) moves from the fourth radio scheme section to the third radio scheme section will be described. First, when the mobile station 12 moves to the area of the zone boundary 11, the first receiving unit 17 adopting the fourth radio system cannot receive the transmission radio wave of the fourth base station 4, and the control unit 23 When it is detected that the reception state of the receiving unit 17 has not been demodulated normally, the reception information is notified to the determining unit 24 and the first transmitting unit 20 is instructed to stop transmission. Next, when the mobile station 12 moves to the third wireless method section, the third receiving unit 19 adopting the third wireless method receives the transmission radio wave of the third base station 3, and as a result, the control unit 23 3 Detects that the reception state of the reception unit 19 is normally demodulated, and transmits to the determination unit 24 reception information indicating that the third wireless system signal is normally received. Based on the reception information from the control unit 23 and the arrangement information from the storage unit 25, the determination unit 24 is present in the third radio scheme section at the present time, and moves at the next time point. It is determined that the adjacent wireless system section is the second wireless system section or the fourth wireless system section. Based on this determination, the determination unit 24 should select the third wireless method to be transmitted / received bidirectionally at the present time and the second wireless method and the fourth wireless method to be transmitted / received at the next time point. And the determination result is transmitted to the control unit 23. The control unit 23 that has received the determination result sets the first receiving unit 17 and the first transmitting unit 20 to the fourth radio mode, the second receiving unit 18 and the second transmitting unit 21 to the second radio mode, The third receiver 19 and the third transmitter 22 are switched to the third radio mode, and the fourth base 19 is selected by selecting the third receiver 19 and the third transmitter 22 in the third radio mode to be bidirectionally transmitted / received. By connecting from the station 4 to the third base station 3, bidirectional communication becomes possible. In addition, the mobile station apparatus 100 can monitor the reception status for the adjacent second radio scheme section and fourth radio scheme section.

  Next, the case where the mobile station 12 (mobile station apparatus 100) moves from the third radio scheme section to the second radio scheme section will be described. First, when the mobile station 12 moves to the area of the zone boundary 10, the third receiving unit 19 adopting the third radio system cannot receive the transmission radio wave of the third base station 3, and the control unit 23 When it is detected that the reception state of the reception unit 19 has not been demodulated normally, the reception information is notified to the determination unit 24 and the third transmission unit 22 is instructed to stop transmission. Next, when the mobile station 12 moves to the second radio scheme section, the second receiver 18 that adopts the second radio scheme receives the transmission radio wave of the second base station 2, and as a result, the control unit 23 2 Detects that the reception state of the reception unit 18 is normally demodulated, and transmits reception information indicating that the second wireless signal is normally received to the determination unit 24. Based on the reception information from the control unit 23 and the arrangement information from the storage unit 25, the determination unit 24 is present in the second radio scheme section at the present time, and moves at the next time point. It is determined that the adjacent wireless system section is the first wireless system section or the third wireless system section. Based on this determination, the determination unit 24 should select the second wireless method to be transmitted / received bidirectionally at the present time and the first wireless method and the third wireless method to be transmitted / received at the next time point. And the determination result is transmitted to the control unit 23. The control unit 23 that has received the determination result changes the operation mode of the first reception unit 17 and the first transmission unit 20 from the fourth wireless mode to the first wireless mode, and the second reception unit 18 and the second transmission unit 21. Is switched to the second radio mode, the third receiver 19 and the third transmitter 22 are switched to the third radio mode, and the second receiver 18 and the second transmitter 21 in the second radio mode to be bidirectionally transmitted and received. By selecting, the third base station 3 is connected to the second base station 2 to enable bidirectional communication. Moreover, the mobile station device 100 can monitor the reception status for the adjacent first radio scheme section and third radio scheme section.

  Next, the case where the mobile station 12 (mobile station apparatus 100) moves from the second radio scheme section to the first radio scheme section will be described. First, when the mobile station 12 moves to the area of the zone boundary 9, the second receiving unit 18 adopting the second radio system cannot receive the transmission radio wave of the second base station 2, and the control unit 23 Detecting that the reception state of the reception unit 18 has not been demodulated normally, notifies the determination unit 24 of the reception information, and instructs the second transmission unit 21 to stop transmission. Next, when the mobile station 12 moves to the first radio scheme section, the first receiver 17 adopting the first radio scheme receives the transmission radio wave of the first base station 1, and as a result, the control unit 23 It detects that the reception state of the first receiver 17 has been demodulated normally, and transmits reception information indicating that the signal of the first radio system is normally received to the determination unit 24. Based on the reception information from the control unit 23 and the arrangement information from the storage unit 25, the determination unit 24 is present in the first radio scheme section at the present time, and moves at the next time point. It is determined that the adjacent wireless system section is the second wireless system section. Based on this determination, the determination unit 24 determines that the first wireless method to be transmitted / received bidirectionally at the current time point and the second wireless method to be transmitted / received at the next time point should be selected. The determination result is transmitted to the control unit 23. The control unit 23 that has received the determination result sets the first receiving unit 17 and the first transmitting unit 20 to the first radio mode, the second receiving unit 18 and the second transmitting unit 21 to the second radio mode, The third receiver 19 and the third transmitter 22 are switched (substantially maintained) to the third radio mode, and the first receiver 17 and the first transmitter 20 in the first radio mode to be bidirectionally transmitted / received By selecting, the second base station 2 is connected to the first base station 1 to enable bidirectional communication. In addition, the mobile station device 100 can monitor the reception state for the adjacent second radio scheme section.

  Next, the case where the mobile station 12 (mobile station apparatus 100) moves from the first radio scheme section to the second radio scheme section will be described. First, when the mobile station 12 moves to the area of the zone boundary 9, the first receiving unit 17 that adopts the first radio system cannot receive the transmission radio wave of the first base station 1, and the control unit 23 When it is detected that the reception state of the receiving unit 17 has not been demodulated normally, the reception information is notified to the determining unit 24 and the first transmitting unit 20 is instructed to stop transmission. Next, when the mobile station 12 moves to the second radio scheme section, the second receiver 18 that adopts the second radio scheme receives the transmission radio wave of the second base station 2, and as a result, the control unit 23 2 Detects that the reception state of the reception unit 18 is normally demodulated, and transmits reception information indicating that the second wireless signal is normally received to the determination unit 24. Based on the reception information from the control unit 23 and the arrangement information from the storage unit 25, the determination unit 24 is present in the second radio scheme section at the present time, and moves at the next time point. It is determined that the adjacent wireless system section is the third wireless system section or the first wireless system section. Based on this determination, the determination unit 24 should select the second wireless method to be transmitted / received bidirectionally at the current time point, and the third wireless method and the first wireless method to be transmitted / received at the next time point. And the determination result is transmitted to the control unit 23. The control unit 23 that has received the determination result sets the first receiving unit 17 and the first transmitting unit 20 to the first radio mode, the second receiving unit 18 and the second transmitting unit 21 to the second radio mode, The third receiver 19 and the third transmitter 22 are switched (substantially maintained) to the third radio mode, and the second receiver 18 and the second transmitter 21 in the second radio mode to be bidirectionally transmitted and received By selecting, the first base station 1 is connected to the second base station 2 to enable bidirectional communication. Moreover, the mobile station device 100 can monitor the reception status for the adjacent first radio scheme section and third radio scheme section.

  In the above description, when the mobile station 12 moves in the radio scheme section and switches between the radio scheme of the transmitter and the receiver, the radio scheme before switching and the radio scheme after switching are the same scheme. Since there is no need to switch the wireless system of the transmitter and receiver, continuous operation is acceptable.

  In the above example, the second receiving unit 18 and the second transmitting unit 21 are in the second radio system and are not changed regardless of which radio system section the mobile station 12 exists in, and the third reception is performed. The unit 19 and the third transmission unit 22 are also the third radio system, and the radio system is not changed. In such a case, the second wireless method and the third wireless method may be a receiving unit and a transmitting unit of an individual wireless method, respectively, and the necessity of a transmitting unit and a receiving unit that can support any wireless method is Absent.

  As described above, according to the present embodiment, the first receiving unit 17, the first receiving unit 17, the first wireless unit 17, the second wireless method, the third wireless method, and the fourth wireless method that are compatible with each of the different wireless methods. 2 receiving unit 18, third receiving unit 19, first transmitting unit 20, second transmitting unit 21, and third transmitting unit, each receiving unit depending on the radio scheme section in which mobile station apparatus 100 currently exists Even if the mobile station apparatus 100 travels across the first radio scheme section, the second radio scheme section, the third radio scheme section, and the fourth radio scheme section, it is different. Continue communication with the first base station 1, the second base station 2, the third base station 3, and the fourth base station 4 without installing all the receivers and transmitters corresponding to the individual radio systems. I can do it. In addition, since the mobile station apparatus 100 is in a state where it can always receive the radio system of the adjacent radio system section, the instantaneous interruption time associated with the movement to the adjacent radio system section is shorter, and the system can be switched reliably. .

  In the above description, the four wireless systems from the first wireless system to the fourth wireless system are examples, and the technical features of the present embodiment can be applied even when the number of wireless systems is other than that.

  The mobile station apparatus 100 according to the present embodiment includes a communication unit 50 that can select any one of the first wireless method, the second wireless method, the third wireless method, and the fourth wireless method, the received information, and the arrangement. Since the determination unit 24 for selecting a radio system based on the information is provided, the mobile station apparatus 100 can communicate with the base station in any section in which any communication system is employed. In addition, since it is not necessary to provide all communication devices for each wireless system, it is possible to save power and reduce the size of the device.

  In addition, the mobile station device 100 according to the present embodiment is in a state in which the radio system of the adjacent jurisdiction area can always be received according to the arrangement information in the storage unit 25, so the instantaneous interruption due to the movement to the adjacent radio system section. The time is short and the system can be switched reliably.

  In addition, mobile station apparatus 100 according to the present embodiment has a configuration in which determination unit 24 determines the wireless method that each receiving unit should adopt based on the arrangement information in storage unit 25, and therefore, arrangement of wireless method sections. Even if it is changed, or when it corresponds to the arrangement of another train radio system, it can easily correspond to any radio system arrangement by changing only the arrangement information stored in the storage unit 25. I can do it.

(Embodiment 2)
The second embodiment will be described in detail with reference to FIGS. 1, 5, 6 and 7. FIG.

  In the present embodiment, mobile station apparatus 100 is provided in mobile station 12 as in the first embodiment. The mobile station 12 includes a first base area under control of the first base station that performs communication using the first communication system and a second base that performs communication using a second communication system different from the first communication system. A second jurisdiction over which the station has jurisdiction, a third jurisdiction over which a third base station that communicates using a third communication scheme different from the first communication scheme and the second communication scheme, and the first A fourth jurisdiction area under control of a fourth base station that performs communication using a communication method, a fourth communication method different from any of the second communication method and the third communication method is moved. Therefore, the mobile station device 100 equipped in the mobile station 12 moves with the mobile station 12 in the first jurisdiction area, the second jurisdiction area, the third jurisdiction area, and the fourth jurisdiction area.

  In this embodiment, when the mobile station apparatus 100 moves back and forth between the first radio scheme section, the second radio scheme section, the third radio scheme section, and the fourth radio scheme section, the mobile station apparatus 100 corresponds to the radio scheme of that section. In this embodiment, the selected communication method is automatically selected. In the train radio communication system described below as an example of the present embodiment, the mobile station apparatus 100 has different radio systems (first radio system, second radio system, third radio system, and fourth radio system). Two receivers and two transmitters that can correspond to each of the systems), and each receiver and each transmitter unit software installed in the device according to changes in the wireless system Alternatively, the radio system is switched by changing the setting of the logic circuit, and only the radio system in the radio system section where the mobile station apparatus 100 currently exists and the radio system in the radio system section adjacent to the traveling direction of the mobile station apparatus 100 are operated. There is a feature point in making it.

  FIG. 1 is a diagram showing a configuration of a train radio system according to the second embodiment. The configuration of the train radio system in FIG. 1 is the same as the configuration described in the first embodiment.

  With reference to FIG. 5, the configuration of mobile station apparatus 100 according to the present embodiment will be described. FIG. 5 is a block diagram showing a configuration of mobile station apparatus 100. The mobile station device 100 is installed in a mobile station 12 that is a train. As illustrated in FIG. 5, the mobile station device 100 includes an antenna 13, a communication unit 50, a control unit 23, a determination unit 24, and a storage unit 25. The communication unit 50 includes a duplexer 14, a distributor 15, a combiner 16, a first receiver 17, a second receiver 18, a first transmitter 20, and a second transmitter 21. Prepare.

  The duplexer 14 separates the transmission signal and the reception signal. The distributor 15 distributes the received signal. The combiner 16 combines the transmission signals.

  The first receiver 17 and the second receiver 18 receive radio waves leaking from the LCX5, LCX6, LCX7, or LCX8. The first transmitter 20 and the second transmitter 21 transmit radio waves to LCX5, LCX6, LCX7, or LCX8.

  The controller 23 controls the first receiver 17, the second receiver 18, the first transmitter 20, and the second transmitter 21 and delivers signals.

  The determination unit 24 uses the “reception information” from the control unit 23, the “array information” from the storage unit 25, and the “direction information” from the outside to determine the first wireless method, the second wireless method, and the third wireless method. It is determined which method should be selected from the method and the fourth wireless method, and the determination result is notified to the control unit 23.

  The storage unit 25 stores that the jurisdiction area is arranged in the order of the first radio scheme section, the second radio scheme section, the third radio scheme section, and the fourth radio scheme section. The determination unit 24 is notified.

  Here, each of the first receiving unit 17, the second receiving unit 18, the first transmitting unit 20, and the second transmitting unit 21 switches the first radio scheme, the second radio scheme, and the third by switching the software to be installed. The wireless system and the fourth wireless system can be switched (selected).

  The first transmission unit 20 and the second transmission unit 21 may be modified as follows. That is, instead of providing the first transmission unit 20 and the second transmission unit 21, a configuration may be adopted in which the transmission units of the first wireless method, the second wireless method, the third wireless method, and the fourth wireless method are separately mounted. . Alternatively, if the first transmission unit 20 has a configuration capable of switching (selecting) the first wireless method, the second wireless method, the third wireless method, and the fourth wireless method by switching the software implemented by the first transmission unit 20. It is good also as a structure which does not mount the 2nd transmission part 21. FIG. Alternatively, the operation methods of the first transmission unit 20 and the second transmission unit 21 may be the same as the wireless method of the section where the mobile station 12 currently exists.

  Next, with reference to FIG. 6, operation | movement of the mobile station apparatus 100 which concerns on this Embodiment is described. FIG. 6 is a flowchart showing the operation of the mobile station device 100.

  In step S <b> 10, in the mobile station device 100, the radio wave received by the antenna 13 is sent to the first receiving unit 17 and the second receiving unit 18 via the duplexer 14 and the distributor 15.

  In the first radio scheme section, the received signal can be demodulated normally if the operation mode of the first receiver 17 or the second receiver 18 is the first radio scheme, but the first receiver 17 or The received signal cannot be normally demodulated if the operation method of the second receiver 18 is other than the first wireless method. Similarly, in each of the second radio scheme section, the third radio scheme section, and the fourth radio scheme section, if the first receiver 17 or the second receiver 18 matches the radio scheme of the section, the received signal is transmitted. Although it can be demodulated normally, the received signal cannot be demodulated normally if it is a radio system that does not match the radio system of the section. That is, one of the operation methods of the first receiving unit 17 or the second receiving unit 18 needs to match the wireless method of the section where the mobile station device 100 exists. Furthermore, one of the first transmission unit 20 and the second transmission unit 21 needs to match the radio system of the section where the mobile station device 100 exists.

  In step S <b> 20, the control unit 23 detects the radio system that is normally demodulated from the reception state of the first reception unit 17 or the second reception unit 18, and outputs the reception information to the determination unit 24.

  In step S <b> 30, the determination unit 24 includes “reception information” from the control unit 23, and the jurisdiction area from the storage unit 25 is the first radio scheme section, the second radio scheme section, the third radio scheme section, the fourth “Arrangement information” indicating that the radio system sections are arranged in order and “direction information” indicating in which direction the mobile station 12 from the outside is traveling are input. Then, the determination unit 24 detects the radio system section where the mobile station apparatus 100 currently exists based on the “reception information”, “array information”, and “direction information”, and the mobile station apparatus 100 currently exists. The radio scheme of the radio scheme section to be performed and the radio scheme of the radio scheme section adjacent to the direction in which the mobile station device 100 travels are determined, and the determination result is notified to the control unit 23.

  In step S <b> 40, the control unit 23 transmits the wireless method to the first reception unit 17, the second reception unit 18, the first transmission unit 20, and the second transmission unit 21 based on the notified determination result. Switching control is performed. By this control, the radio scheme in the radio scheme section where the mobile station apparatus 100 currently exists and the radio scheme in the radio scheme section adjacent to the direction in which the mobile station apparatus 100 travels are selected.

  In step S50, one set of the first receiving unit 17, the second receiving unit 18, the first transmitting unit 20, and the second transmitting unit 21 (receiving unit) according to the switching control of the control unit 23. , The transmission unit) operates in the radio scheme of the radio scheme section in which the mobile station device 100 currently exists. In addition, the other remaining one set (reception unit, transmission unit) operates in the radio scheme of the radio scheme section adjacent in the direction in which the mobile station device 100 travels. Accordingly, the mobile station device 100 includes the first base station 1 in the first radio scheme section, the second base station 2 in the second radio scheme section, the third base station 3 in the third radio scheme section, and the fourth base station. Bidirectional communication can be performed with the fourth base station 4 in the radio system section. Moreover, the mobile station apparatus 100 starts from the first radio scheme section to the second radio scheme section, from the second radio scheme section to the third radio scheme section, from the third radio scheme section to the fourth radio scheme section, and from the fourth radio scheme section. Movements from the third radio scheme section, from the third radio scheme section to the second radio scheme section, and from the second radio scheme section to the first radio scheme section can be detected.

  In the determination by the determination unit 24 and the switching of the wireless method by the control unit 23 in steps S30 and S40, only the first reception unit 17 or the second reception unit 18 selects the wireless method of the adjacent wireless method section. (Because the transmission unit is not necessary), the first transmission unit 20 and the second transmission unit 21 do not have to select a wireless method in an adjacent wireless method section.

  In addition, in the determination by the determination unit 24 and the switching of the wireless method by the control unit 23 in steps S30 and S40, the wireless method in the wireless method section adjacent to the direction in which the mobile station device 100 travels is also one wireless method. If not, any one of the first receiving unit 17, the second receiving unit 18, the first transmitting unit 20, and the second transmitting unit 21 may be any wireless system or may not operate. good.

  Next, with reference to FIG. 7, the contents described in steps S10 to S50 will be described more specifically. FIG. 7 is a diagram illustrating switching between wireless systems.

  First, in FIG. 7, a case is considered where the mobile station 12 (mobile station apparatus 100) moves from the second radio scheme section to the third radio scheme section. When the mobile station 12 exists in the second radio system section, the determination unit 24 moves at the present time based on the “reception information” from the control unit 23 and the “array information” from the storage unit 25. It is determined that the station 12 is in the second radio system section. Further, the determination unit 24 uses the “direction information” from the outside in addition to “reception information” and “arrangement information” to determine whether the third radio scheme section in which the mobile station 12 moves at the next time is “ It is determined that the wireless system section is adjacent. Based on this determination, the determination unit 24 determines that the second wireless method to be transmitted / received bidirectionally at the current time point and the third wireless method to be transmitted / received at the next time point should be selected, and the determination result Is notified to the control unit 23. Receiving this determination notification, the control unit 23 instructs the pair of the second reception unit 18 and the second transmission unit 21 to operate in the second radio system mode, and the first reception unit 17 and the first transmission unit 21. One set of the transmitter 20 is instructed to operate in the third wireless mode. With these control instructions, the mobile station device 100 can perform bidirectional communication with the second base station 2 in the second radio scheme section. Moreover, the mobile station device 100 can monitor the reception state for the third radio scheme section adjacent in the traveling direction.

  Next, the case where the mobile station 12 moves to the third radio system section side in FIG. 7 will be described. First, when the mobile station 12 (mobile station apparatus 100) moves into the area of the zone boundary 10, the second receiving unit 18 that adopts the second radio scheme transmits the second base station 2 that adopts the second radio scheme. I can no longer receive radio waves. Therefore, the control unit 23 of the mobile station device 100 detects that the reception state of the second reception unit 18 has not been demodulated normally. For this reason, the control unit 23 notifies the determination unit 24 of “reception information” indicating that the second wireless method cannot be normally received, and instructs the second transmission unit 21 to stop transmission. The 2nd transmission part 21 which received this stops transmission.

  Next, in FIG. 7, a case where the mobile station 12 moves through the zone boundary 10 and moves into the third radio system section will be described. When the mobile station 12 (mobile station apparatus 100) moves to the third radio scheme section, the first receiver 17 that adopts the third radio scheme receives the transmission radio wave of the third base station 3 that adopts the third radio scheme. To do. Therefore, the control unit 23 of the mobile station device 100 detects that the reception state of the first reception unit 17 can be normally demodulated. For this reason, the control unit 23 notifies the determination unit 24 of “reception information” indicating that the third wireless method is normally received. Based on the “reception information” from the control unit 23, the “array information” from the storage unit 25, and the “direction information” from the outside, the determination unit 24 determines that the mobile station 12 has the third radio It is determined that the fourth radio scheme section that is in the scheme section and moves at the next time point is a radio scheme section that is adjacent in the traveling direction. Based on this determination, the determination unit 24 determines that the third wireless method to be transmitted / received bidirectionally at the current time point and the fourth wireless method to be transmitted / received at the next time point should be selected, and the determination result Is notified to the control unit 23. Receiving this determination notification, the control unit 23 instructs the first reception unit 17 and the first transmission unit 20 to the third wireless mode, and instructs the second reception unit 18 and the second transmission unit 21 to the fourth wireless mode. . With these instructions, the mobile station device 100 can perform bidirectional communication with the third base station 3 in the third radio scheme section. Moreover, the mobile station device 100 can monitor the reception state for the fourth radio scheme section adjacent in the traveling direction.

  In the above, when the mobile station device 100 moves in the radio scheme section and switches between the radio scheme of the transmitter and the receiver, if the radio scheme before switching and the radio scheme after switching are the same scheme, There is no need to switch the radio system of the transmitter and receiver, and continuous operation is sufficient.

  As described above, according to the present embodiment, the mobile station apparatus 100 can receive each of the different radio schemes (first radio scheme, second radio scheme, third radio scheme, and fourth radio scheme). Unit 17, second receiver 18, first transmitter 20, and second transmitter 21, and configured to switch the radio system depending on the radio system section in which the mobile station device 100 exists, Even if the mobile station apparatus 100 travels across the first radio scheme section, the second radio scheme section, the third radio scheme section, and the fourth radio scheme section, a receiver and a transmitter that individually correspond to different radio schemes The communication with the first base station 1, the second base station 2, the third base station 3, and the fourth base station 4 can be continued. Moreover, since the radio system of the radio system section adjacent to the direction in which the mobile station device 100 travels is always receivable, the instantaneous interruption time when moving to the adjacent radio system section is short, and the system is switched reliably. I can do it. In addition, as compared with the first embodiment, the adjacent radio scheme sections may be only the radio scheme of the section adjacent in the direction in which the mobile station apparatus 100 travels, and thus the third receiver 19 and the third transmitter 22 The mobile station apparatus 100 can be further miniaturized.

  Note that the four wireless systems from the first wireless system to the fourth wireless system in the above description are merely examples, and the feature points of the present embodiment can be similarly applied to other wireless systems. I can do it.

  The mobile station apparatus 100 according to the second embodiment includes a communication unit 50 that can select any one of the first wireless method, the second wireless method, the third wireless method, and the fourth wireless method, the reception information, and the arrangement information. And a determination unit 24 that selects a wireless system based on the direction information, it is possible to communicate in a section that employs any communication system. Further, since there is no need to provide all communication devices for each wireless system, power saving and device miniaturization can be achieved.

  In mobile station apparatus 100 of the second embodiment, determination unit 24 determines a radio scheme section adjacent in the direction in which mobile station apparatus 100 travels based on “array information” in storage unit 25 and “direction information” from the outside. Therefore, the control unit 23 is also in a state where the radio system of the radio system section adjacent to the direction in which the mobile station device 100 travels can always be received, so the instantaneous interruption time during the movement to the adjacent radio system section is short and reliably You can switch systems.

  In mobile station apparatus 100 according to the second embodiment, the configuration is such that determination unit 24 determines the wireless method based on “array information” in storage unit 25 and “direction information” from the outside. Even when it corresponds to the arrangement of other train radio systems, it is possible to easily deal with any radio system arrangement by changing only the arrangement information stored in the storage unit 25.

(Embodiment 3)
The feature points of the third embodiment will be described with reference to FIGS. In the present embodiment, mobile station apparatus 100 is equipped in mobile station 12. The mobile station 12 includes a first base area under control of the first base station that performs communication using the first communication system, and a second base station that performs communication using a second communication system different from the first communication system. The third jurisdiction over which the third base station that performs communication using the third communication method different from the first communication method and the second communication method, the first communication method, the first communication method, The fourth jurisdiction is controlled by a fourth base station that performs communication using a fourth communication method different from the second communication method and the third communication method. Therefore, the mobile station device 100 equipped in the mobile station 12 moves with the mobile station 12 in the first jurisdiction area, the second jurisdiction area, the third jurisdiction area, and the fourth jurisdiction area. In the example of FIG. 8, the first radio scheme section is in the first jurisdiction area, the second radio scheme section is in the second jurisdiction area, the third radio scheme section is in the third jurisdiction area, and the fourth radio scheme section is in the fourth area. Each corresponds to a jurisdiction.

  In the present embodiment, when the mobile station apparatus 100 moves back and forth between the first radio scheme section, the second radio scheme section, the third radio scheme section, and the fourth radio scheme section, it corresponds to the radio scheme of the respective section. The feature is that the mobile station apparatus 100 automatically selects the wireless communication method. In the “train radio communication system” described below, the mobile station device 100 can cope with different radio systems (first radio system, second radio system, third radio system, and fourth radio system). 2 devices (reception unit and transmission unit described later), each device switches the wireless method by changing the setting of software or logic circuit installed in the device according to the change of the wireless communication system, As a result, the mobile station apparatus 100 operates only the radio scheme in the radio scheme section where the mobile station apparatus 100 currently exists and the radio scheme in the radio scheme section adjacent to the currently present radio scheme section.

  FIG. 8 is a diagram showing a configuration of a train radio system according to the present embodiment. The train radio system includes a 1-1 base station 31 to a 1-3 base station 33 that performs communication using a first radio system, and a 2-1 base station 34 to a 2-3 that performs communication using a second radio system. The base station 36, the 3-1 base station 37 to the 3-3 base station 39 communicating with the third radio system, and the 4-1 base station 40 to 4-3 communicating with the fourth radio system A base station 42 and a mobile station 12 (train) equipped with a mobile station device 100 that communicates with each of the base stations 1-1 to 4-3 are provided. In the 1-1 base station 31, leaky coaxial cables (hereinafter referred to as "LCX") 61 are laid on both sides of the track on which the mobile station 12 travels, and the base station of the 1-1 base station 31 The transmission radio wave including the number or the transmission radio wave of the mobile station 12 (mobile station device 100) is carried. Similarly, each LCX carries a transmission wave including the base station number of the corresponding base station or a transmission wave of the mobile station 12 (mobile station apparatus 100).

  The 1-1 base station 31 to the 1-3 base station 33, the 2-1 base station 34 to the 2-3 base station 36, and the 3-1 base station 37 to the 3-3 base station 39. Are collectively referred to as “jurisdiction base stations”.

  The mobile station apparatus 100 is installed in the mobile station 12, and includes a first radio scheme section managed by the 1-1 base station 31 to the 1-3 base station 33, and the 2-1 base station 34 to the 1 st base station. The second radio system section managed by the 2-3 base station 36, the third radio system section managed by the 3-1 base station 37 to the 3-3 base station 39, and the 4-1 base station 40 to the It moves between the 4th radio system area which 4-3 base station 42 has jurisdiction over.

  A zone boundary 9 in FIG. 4 is an area where the mobile station device 100 switches the radio system to the first radio system or the second radio system. The zone boundary 10 is an area where the mobile station device 100 switches the radio system to the second radio system or the third radio system. The zone boundary 11 is an area where the mobile station device 100 switches the radio system to the third radio system or the fourth radio system.

  When the mobile station apparatus 100 moves from the first radio scheme section to the second radio scheme section, the mobile station apparatus 100 switches the radio scheme to the second radio scheme at the zone boundary 9. Conversely, when the mobile station apparatus 100 moves from the second radio scheme section to the first radio scheme section, the mobile station apparatus 100 switches the radio scheme to the first radio scheme at the zone boundary 9. Further, when the mobile station apparatus 100 moves from the second radio scheme section to the third radio scheme section, the mobile station apparatus 100 switches the radio scheme to the third radio scheme at the zone boundary 10. Conversely, when the mobile station apparatus 100 moves from the third radio scheme section to the second radio scheme section, the mobile station apparatus 100 switches the radio scheme to the second radio scheme at the zone boundary 10. Further, when the mobile station device 100 moves from the third radio scheme section to the fourth radio scheme section, the mobile station apparatus 100 switches the radio scheme to the fourth radio scheme at the zone boundary 11. Conversely, when the mobile station apparatus 100 moves from the fourth radio scheme section to the third radio scheme section, the mobile station apparatus 100 switches the radio scheme to the third radio scheme at the zone boundary 11.

  These zone boundary 9, zone boundary 10, and zone boundary 11 are areas over a distance of several tens of meters where radio waves leaking from adjacent LCXs sandwiching each zone boundary overlap.

  Note that switching between wireless systems may be performed in areas other than the zone boundary 9, the zone boundary 10, and the zone boundary 11.

  With reference to FIG. 9, the structure of the mobile station apparatus 100 is described. FIG. 9 is a block diagram showing a configuration of mobile station apparatus 100. The mobile station device 100 is installed in a mobile station 12 that is a train. As illustrated in FIG. 9, the mobile station device 100 includes an antenna 13, a communication unit 50, a control unit 23, a determination unit 24, and a storage unit 25. The communication unit 50 includes a duplexer 14, a distributor 15, a combiner 16, a first receiver 17, a second receiver 18, a first transmitter 20, and a second transmitter 21. .

  The duplexer 14 separates the transmission signal and the reception signal. The distributor 15 distributes the received signal. The combiner 16 combines the transmission signals.

  The first receiving unit 17 and the second receiving unit 18 receive radio waves leaking from each LCX. Moreover, the 1st transmission part 20 and the 2nd transmission part 21 transmit an electromagnetic wave to each LCX.

  The controller 23 controls the first receiver 17, the second receiver 18, the first transmitter 20, and the second transmitter 21 and delivers signals.

  Based on the “reception information” from the control unit 23 and the “array information” (base station information) from the storage unit 25, the determination unit 24 performs the first wireless method, the second wireless method, the third wireless method, and the fourth wireless method. It is determined which of the wireless systems should be selected, and the determination result is notified to the control unit 23.

  The storage unit 25 has (1) that the jurisdiction area is arranged in the order of the first radio scheme section, the second radio scheme section, the third radio scheme section, and the fourth radio scheme section, and (2) the first One radio scheme section is in the order of the 1-1 base station 31, the 1-2 base station 32, and the 1-3 base station 33, and the second radio scheme section is the 2-1 base station 34, the second 2- 2 in the order of the 2 base station 35 and the 2nd-3 base station 36, the third radio system section in the order of the 3rd-1 base station 37, the 3rd-2 base station 38, and the 3rd-3 base station 39. , That the fourth radio system section is arranged in the order of the 4-1 base station 40, the 4-2 base station 41, and the 4-3 base station 42, "array information" (base station Information) and notifies the determination unit 24 of the “array information” (base station information).

  Here, each of the first receiving unit 17, the second receiving unit 18, the first transmitting unit 20, and the second transmitting unit 21 switches the software to be installed, thereby changing the first wireless method, the second wireless method, It has a configuration capable of switching (selecting) to the 3 radio system and the 4 radio system. In addition, it replaces with arrangement | positioning of the 1st transmission part 20 and the 2nd transmission part 21, As a structure which mounts the transmission part of a 1st wireless system, a 2nd wireless system, a 3rd wireless system, and a 4th wireless system separately. Also good. Further, the first transmission unit 20 can switch (select) the first wireless method, the second wireless method, the third wireless method, and the fourth wireless method by switching software installed in the same unit 20. In the case of having a configuration, the second transmitter 21 may not be mounted. Or both the 1st transmission part 20 and the 2nd transmission part 21 are good also as operate | moving with the radio system (same radio system) of the radio system area where the mobile station apparatus 100 exists now.

  Next, the operation of the mobile station apparatus 100 will be described with reference to FIG. FIG. 10 is a flowchart showing the operation of the mobile station apparatus 100.

  In step S <b> 10, in the mobile station device 100, the radio wave received from the antenna 13 is sent to the first receiving unit 17 and the second receiving unit 18 via the duplexer 14 and the distributor 15.

  In the first radio scheme section, if the first receiver 17 or the second receiver 18 is the first radio scheme, the first receiver 17 or the second receiver 18 can normally demodulate, In cases other than the first wireless system, the first receiver 17 or the second receiver 18 cannot be demodulated normally. Similarly, in each of the second radio scheme interval, the third radio scheme interval, and the fourth radio scheme interval, the first reception unit 17 or the second reception unit 18 that matches the radio scheme of the segment receives the first reception. The unit 17 or the second receiving unit 18 can normally demodulate, but the first receiving unit 17 or the second receiving unit 18 cannot demodulate normally if the wireless system does not match. That is, one of the first receiving unit 17 and the second receiving unit 18 needs to match the radio system in the section where the mobile station device 100 exists. Furthermore, one of the first transmission unit 20 and the second transmission unit 21 needs to match the radio system of the section where the mobile station device 100 exists.

  In step S20, the control unit 23 detects the base station number that transmitted the radio wave from the reception signal normally received from the reception state of the first reception unit 17 or the second reception unit 18, and obtains information on the base station. The received information is output to the determination unit 24.

  In step S <b> 30, the determination unit 24 includes “reception information” from the control unit 23, and the jurisdiction area from the storage unit 25 is the first radio scheme section, the second radio scheme section, the third radio scheme section, and “Array information” (base station information) that is arranged in the order of the fourth radio system section and indicates the order of the base stations in each radio system section is input. The determination unit 24 detects the radio system section (base station area) in which the mobile station apparatus 100 currently exists based on the “reception information” and “array information” (base station information) described above, and the mobile station The radio scheme of the radio scheme section where the device 100 currently exists, and the radio scheme section adjacent to the radio scheme section (area of a certain base station) where the mobile station device 100 currently exists (of a base station adjacent to a certain base station) Area) wireless system, and the determination result is notified to the control unit 23.

  In step S40, the control unit 23 performs switching control on the first receiving unit 17, the second receiving unit 18, the first transmitting unit 20, and the second transmitting unit 21 based on the notified determination result. I do. As a result, the wireless method section (area of a certain base station) in which the mobile station apparatus 100 currently exists and the wireless method section adjacent to the wireless method section (of the base station adjacent to a certain base station) Area) wireless method is selected.

  In step S50, one of the first receiving unit 17, the second receiving unit 18, the first transmitting unit 20, and the second transmitting unit 21 is switched by the switching control by the control unit 23 so that the mobile station apparatus 100 operates in a wireless system in a wireless system section (an area of a certain base station) in which it currently exists. The remaining one set operates in the radio system of the base station adjacent to the certain base station. Accordingly, the mobile station device 100 includes the first base station 1 (31 to 33) in the first radio scheme section, the second base station 2 (34 to 36) in the second radio scheme section, and the third radio scheme section. Then, it is possible to perform bidirectional communication with the third base station 3 (37 to 39) and with the fourth base station 4 (40 to 42) in the fourth wireless system section. In addition, the mobile station apparatus 100 starts from the first radio scheme section to the second radio scheme section, from the second radio scheme section to the third radio scheme section, from the third radio scheme section to the fourth radio scheme section, and from the fourth radio scheme section. The movement from the third radio scheme section, the third radio scheme section to the second radio scheme section, and the second radio scheme section to the first radio scheme section can be detected.

  In the determination by the determination unit 24 and the switching of the wireless method by the control unit 23 in steps S30 and S40, only the first reception unit 17 or the second reception unit 18 selects the wireless method of the adjacent wireless method section. (Because the transmission unit is not necessary), the first transmission unit 20 and the second transmission unit 21 do not have to select a wireless method in an adjacent wireless method section.

  Further, in the determination by the determination unit 24 and the switching by the control unit 23 in steps S30 and S40, the radio system of the adjacent base station is the same as the radio system of the base station where the mobile station apparatus 100 currently exists. In the same case, any one of the first receiving unit 17, the second receiving unit 18, the first transmitting unit 20, and the second transmitting unit 21 may be any wireless system or may not operate. May be.

  Below, with reference to FIG. 11, the content described by said step S10-S50 is described more concretely. FIG. 11 is a diagram illustrating switching of wireless systems in the present embodiment.

  First, in FIG. 11, the mobile station 12 (mobile station apparatus 100) moves from the 2-3 base station 36 in the second radio scheme section to the 3-1 base station 37 in the third radio scheme section. think of. At the time when the mobile station 12 is communicating with the 2-3 base station 36 in the second radio scheme section, the determination unit 24 receives “reception information” from the control unit 23 and “array information” from the storage unit 25. Based on (base station information), the mobile station device 100 is present in the second radio system section at the present time, and moves at the next time point, the 2-2 base station 35 or the 3-1 base station. 37 is determined to be a section adjacent to the section where the mobile station apparatus 100 currently exists. That is, the determination unit 24 includes a second radio system 2-2 base station 35 that moves at the next time point, and a third radio base 3-1 base station 37 that is a third radio system different from the second radio system. Judged to be adjacent. Based on this determination, the determination unit 24 determines that the second wireless method to be transmitted / received bidirectionally at the present time and the second wireless method and the third wireless method to be transmitted / received at the next time point should be selected, The determination result is notified to the control unit 23. Upon receiving this determination notification, the control unit 23 sets one set of the second reception unit 18 and the second transmission unit 21 to the second wireless mode, and sets one set of the first reception unit 17 and the first transmission unit 20 to the third mode. Instruct the wireless system mode respectively. With these switching instructions, the mobile station apparatus 100 can perform bidirectional communication with the 2-3 base station 36 in the second radio scheme section. In addition, the mobile station apparatus 100 can monitor the reception state for the adjacent third radio scheme section.

  Next, referring to FIG. 11, a case where the mobile station 12 moves to the third radio system section will be described. First, when the mobile station 12 (mobile station apparatus 100) moves to the area of the zone boundary 10, the second receiving unit 18 that adopts the second radio scheme uses the second-3 base station 36 that adopts the second radio scheme. You will not be able to receive transmitted radio waves. Therefore, the control unit 23 of the mobile station device 100 detects that the reception state of the second reception unit 18 has not been demodulated normally. For this reason, the control unit 23 notifies the determination unit 24 of “reception information” indicating that the second wireless method cannot be normally received, and instructs the second transmission unit 21 to stop transmission. The 2nd transmission part 21 which received this stops transmission.

  Next, in FIG. 11, a case where the mobile station 12 moves to the 3-1 base station 37 in the third radio system section will be described. When the mobile station 12 (mobile station device 100) moves to the 3-1 base station 37 in the third radio scheme section, the first receiving unit 17 adopting the third radio scheme adopts the third radio scheme. -1 The transmission radio wave of the base station 37 is received. Therefore, the control unit 23 of the mobile station apparatus 100 can normally demodulate the reception state of the first receiving unit 17 and can communicate with the 3-1 base station 37 from the information of the base station number included in the received signal. Is detected. For this reason, the control unit 23 notifies the determination unit 24 of “reception information” indicating that communication with the third wireless base 3-1 base station 37 is possible. Based on the “reception information” from the control unit 23 and the “arrangement information” (base station information) from the storage unit 25, the determination unit 24 determines that the mobile station device 100 at the present time is the third radio system section 3rd. -1 in the area of the base station 37, the area of the second and third base stations 36 in the second radio scheme section moving at the next time point or the area of the third and second base stations 38 in the third radio scheme section are adjacent to each other. Judge that it is. Based on this determination, the determination unit 24 determines that the third wireless method to be transmitted / received bidirectionally at the present time and the second wireless method and the third wireless method to be transmitted / received at the next time point should be selected. Then, the control unit 23 is notified of the determination result. Upon receiving this determination notification, the control unit 23 places the first reception unit 17 and the first transmission unit 20 in the third wireless mode, and sets the second reception unit 18 and the second transmission unit 21 in the second wireless mode. Instruct. With these instructions, the mobile station device 100 can perform bidirectional communication with the 3-1 base station 37 in the third radio scheme section. In addition, the mobile station device 100 can monitor the reception status of the second and third base stations 36 in the adjacent second radio scheme section and the third and second base stations 38 in the third radio scheme section.

  In the above case, when the mobile station apparatus 100 moves in the wireless method section and switches between the wireless methods of the transmitter and the receiver, the wireless method before switching and the wireless method after switching are the same method. In such a case, there is no need to switch the radio system of the transmitter and the receiver, so that a continuous operation is sufficient.

  As described above, according to the present embodiment, mobile station apparatus 100 supports each of different radio schemes (first radio scheme, second radio scheme, third radio scheme, and fourth radio scheme). The first receiving unit 17, the second receiving unit 18, the first transmitting unit 20, and the second transmitting unit 21 are mounted, and the first receiving unit can be used according to the radio scheme section in which the mobile station device 100 exists. 17, the second receiver 18, the first transmitter 20, and the second transmitter 21 are configured to switch radio schemes, so that the mobile station apparatus 100 is configured to switch between the first radio scheme section and the second radio scheme section. 1st base station 31 without mounting all receivers and transmitters individually corresponding to different radio schemes even when traveling across the third radio scheme section and the fourth radio scheme section To continue communication with the 4-3rd base station 42 Can. In addition, since the radio systems of adjacent base stations with different radio systems can always be received, the instantaneous interruption time when moving to an adjacent base station is short, and the system can be switched reliably.

  The four wireless systems from the first wireless system to the fourth wireless system described above are examples, and the number of other wireless systems may be used.

  In addition, each jurisdiction base station is not necessarily composed of an array of three or more base stations, and each jurisdiction base station has two adjacent radio system jurisdictions in the same jurisdiction area. You may comprise only from the arrangement | sequence of a base station.

  The mobile station apparatus 100 according to the third embodiment includes a communication unit 50 that can select any of the first radio scheme, the second radio scheme, the third radio scheme, and the fourth radio scheme, and the reception information and the arrangement information. And a determination unit 24 that selects a radio system based on the above, so that communication can be performed in a section in which any communication system is employed. In addition, since it is not necessary to provide a communication device for every wireless system, it is possible to save power and reduce the size of the device.

  The mobile station apparatus 100 according to the third embodiment includes a base station in which the determination unit 24 is adjacent based on the arrangement information in the storage unit 25 and the reception information indicating the base station number from the signal input from the communication unit 50 to the control unit 23. In response to the determination, the communication unit 50 can always receive radio waves of the radio system of the adjacent base station, so the instantaneous interruption time during movement to the adjacent radio system section is short. The system can be switched reliably.

  Since mobile station apparatus 100 according to Embodiment 3 has a configuration in which determination unit 24 determines the radio scheme based on the arrangement information in storage unit 25, when the arrangement of base stations is changed, or arrangement of radio scheme sections Any change in the radio system can be achieved by changing only the “array information” (base station information) stored in the storage unit 25 even when the system is changed or when the system corresponds to an array of another train radio system. The sequence can be easily accommodated.

(Modification of Embodiments 1 and 2)
In the train radio system, the position information of the mobile station itself where the mobile station (train) 12 currently exists is transmitted to the mobile station 12 as distance information from an external device that monitors the travel of the mobile station 12. . If the determination unit 24 includes a table indicating the correspondence between the position information or distance information and each wireless method section, the control unit 23 transmits the position information or distance information in the first or second embodiment. As information that replaces the “reception information” that has been used, the determination unit 24 uses the “sequence information” together with the radio scheme of the radio scheme section in which the mobile station 12 currently exists, and the adjacent radio scheme section. The wireless system section of the wireless system section is determined, and the determination result is transmitted to the control unit 23. The control unit 23 controls the operation mode of each receiving unit in the communication unit 50 according to the determination result. It is also possible to do.

(Modification common to each embodiment)
In preparation for when each receiving device in the communication unit 50 fails, a spare receiving device that operates as a substitute for the failed receiving device and can select all the different communication methods adopted in the train radio system, You may mount in the mobile station apparatus 100. FIG.

(Appendix)
While the embodiments of the present invention have been disclosed and described in detail above, the above description exemplifies aspects to which the present invention can be applied, and the present invention is not limited thereto. In other words, various modifications and variations to the described aspects can be considered without departing from the scope of the present invention.

1 is a diagram illustrating a configuration of a train radio system according to an example of Embodiment 1. FIG. 3 is a block diagram showing a configuration of a mobile station apparatus according to Embodiment 1. FIG. 3 is a flowchart showing an operation of the mobile station apparatus according to the first embodiment. 3 is a diagram illustrating a description of switching between wireless systems in Embodiment 1. FIG. 5 is a block diagram showing a configuration of a mobile station apparatus according to Embodiment 2. FIG. 7 is a flowchart showing an operation of the mobile station apparatus according to the second embodiment. FIG. 10 is a diagram illustrating a description of switching between wireless systems in the second embodiment. FIG. 10 is a diagram illustrating a configuration of a train radio system according to an example of Embodiment 3. FIG. 6 is a block diagram showing a configuration of a mobile station apparatus according to Embodiment 3. 10 is a flowchart showing an operation of the mobile station apparatus according to the third embodiment. FIG. 10 is a diagram illustrating a description of switching between wireless systems in the third embodiment.

Explanation of symbols

  1 to 4 base station, 5 to 8 LCX (leaky coaxial cable), 9 to 11 zone boundary, 12 mobile station, 13 antenna, 14 duplexer, 15 distributor, 16 combiner, 17 to 19 receiver, 20 to 20 22 transmitting unit, 23 control unit, 24 determining unit, 25 storage unit, 31-42 base station, 50 communication unit, 61-72 LCX (leaky coaxial cable), 100 mobile station device.

Claims (6)

A plurality of base stations that communicate with each other using different wireless communication systems are installed in mobile stations that move in a plurality of jurisdictions, and the mobile stations in each of the plurality of jurisdictions A mobile station device that communicates with a base station in the jurisdiction where the
A communication unit including a plurality of reception units capable of selecting the plurality of wireless communication methods;
A storage unit that stores arrangement information indicating in what order the plurality of jurisdictions are arranged;
The mobile station currently exists in the plurality of jurisdictions based on the arrangement information from the storage unit and reception information including a wireless communication method that is normally received from the reception state of the communication unit A determination unit that determines a jurisdiction area to be determined, and determines a radio communication system of the jurisdiction area where the mobile station currently exists and a radio communication system of a jurisdiction area adjacent to the jurisdiction area among the plurality of radio communication systems; ,
The wireless communication method that is normally received is detected from the reception state of the communication unit, the reception information is generated and output to the determination unit, and the determination unit determines from the array information and the reception information A control unit that causes the plurality of reception units to select each wireless communication method;
Mobile station device. A plurality of base stations that communicate with each other using different wireless communication systems are installed in mobile stations that move in a plurality of jurisdictions, and the mobile stations in each of the plurality of jurisdictions A mobile station device that communicates with a base station in a jurisdiction where the
A communication unit including a plurality of receiving units capable of selecting the plurality of wireless communication methods;
A storage unit that stores arrangement information indicating in what order the plurality of jurisdictions are arranged;
The arrangement information from the storage unit, the reception information including the wireless communication method normally received from the reception state of the communication unit, and the mobile station travels in the direction of the plurality of jurisdictions. And determining the jurisdiction area in which the mobile station currently exists in the plurality of jurisdiction areas based on the direction information indicating whether the mobile station currently exists in the plurality of wireless communication schemes A determination unit that determines a wireless communication method of a jurisdiction area adjacent to the area and the traveling direction of the mobile station;
The wireless communication system that is normally received from the reception state of the communication unit is detected, the reception information is generated and output to the determination unit, and the determination unit includes the array information, the reception information, and the direction information. A control unit that causes the plurality of receiving units to select each wireless communication method determined from the above,
Mobile station device. Each mobile station apparatus is equipped with a mobile station that moves in a plurality of jurisdictions each controlled by a jurisdiction base station that performs communication using different wireless communication methods, and each of the plurality of jurisdictions The jurisdiction base station is composed of an array of two base stations adjacent to a jurisdiction area of a different wireless communication method in at least the same jurisdiction area, and the mobile station exists in each of the plurality of jurisdiction areas. A mobile station apparatus that communicates with a base station in a jurisdiction area using a wireless communication method of the base station,
A communication unit including a plurality of receiving units capable of selecting the plurality of wireless communication methods;
Information indicating in what order the plurality of jurisdictions are arranged, and a plurality of base stations constituting the jurisdiction base station with respect to each of the jurisdiction base stations in the plurality of jurisdictions are arranged in any order Information indicating whether or not as base station information, a storage unit for storing,
Based on the base station information from the storage unit and received information indicating that communication with a certain base station can be normally performed from the reception state of the communication unit, the mobile station currently exists A determination unit for determining a wireless communication method to be transmitted and received bidirectionally in a base station area, and a wireless communication method of a base station adjacent to the certain base station area where the mobile station currently exists;
It is detected from the detection result that the base station capable of two-way communication is the certain base station from the information of the base station number included in the received signal that can be normally demodulated from the reception state of the communication unit. Generating the reception information indicating that communication with a base station can be normally performed and outputting the generated reception information to the determination unit, and determining each wireless communication method determined by the determination unit from the reception information and the base station information. A control unit that causes the plurality of receiving units to select,
Mobile station device. The mobile station apparatus according to claim 1 or 2,
The determination unit inputs position information indicating a position of the mobile station as substitute information of the reception information.
Mobile station device. The mobile station apparatus according to any one of claims 1 to 4,
The communication unit is
It is further equipped with a spare reception unit that operates as an alternative to the failed reception unit and can select the plurality of wireless communication methods.
Mobile station device. A mobile station apparatus according to any one of claims 1 to 5,
The storage unit can change the stored information independently of the determination unit,
Mobile station device.

Images