WO2021191969A1 - Mobile station, base station, communication system, control circuit, storage medium, and communication control method - Google Patents

Mobile station, base station, communication system, control circuit, storage medium, and communication control method Download PDF

Info

Publication number
WO2021191969A1
WO2021191969A1 PCT/JP2020/012721 JP2020012721W WO2021191969A1 WO 2021191969 A1 WO2021191969 A1 WO 2021191969A1 JP 2020012721 W JP2020012721 W JP 2020012721W WO 2021191969 A1 WO2021191969 A1 WO 2021191969A1
Authority
WO
WIPO (PCT)
Prior art keywords
mobile
base station
station
mobile station
identification information
Prior art date
Application number
PCT/JP2020/012721
Other languages
French (fr)
Japanese (ja)
Inventor
木下　裕介
Original Assignee
三菱電機株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to PCT/JP2020/012721 priority Critical patent/WO2021191969A1/en
Priority to JP2020544965A priority patent/JP6840299B1/en
Publication of WO2021191969A1 publication Critical patent/WO2021191969A1/en

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L25/00—Recording or indicating positions or identities of vehicles or trains or setting of track apparatus
    • B61L25/02—Indicating or recording positions or identities of vehicles or trains
    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/09—Arrangements for giving variable traffic instructions
    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/123—Traffic control systems for road vehicles indicating the position of vehicles, e.g. scheduled vehicles; Managing passenger vehicles circulating according to a fixed timetable, e.g. buses, trains, trams
    • G08G1/127—Traffic control systems for road vehicles indicating the position of vehicles, e.g. scheduled vehicles; Managing passenger vehicles circulating according to a fixed timetable, e.g. buses, trains, trams to a central station ; Indicators in a central station
    • G08G1/13—Traffic control systems for road vehicles indicating the position of vehicles, e.g. scheduled vehicles; Managing passenger vehicles circulating according to a fixed timetable, e.g. buses, trains, trams to a central station ; Indicators in a central station the indicator being in the form of a map
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/02—Access restriction performed under specific conditions
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W60/00—Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration
    • H04W60/06—De-registration or detaching

Definitions

  • the present disclosure relates to a mobile station, a base station, a communication system, a control circuit, a storage medium, and a communication control method mounted on a mobile body.
  • Patent Document 1 discloses a technique in which a plurality of radios are arranged in front of and behind a mobile body so that one radio maintains a communication state even at the time of handover.
  • Mobile objects such as trains and buses may gather in specific places such as stations and sales offices.
  • a large number of mobiles are gathered in an area (hereinafter referred to as a cell) covered by one base station, a large number of mobile stations arranged on the mobiles are registered in one base station.
  • uplink radio resources in the direction of the base station (hereinafter referred to as uplink) from the mobile station to which the base station can be assigned within a fixed cycle
  • uplink radio resources cannot be allocated to some mobile stations whose locations are registered at regular intervals.
  • service quality cannot be maintained in applications that require user data communication at regular intervals, such as autonomous driving and voice services.
  • the present disclosure has been made in view of the above, and an object of the present disclosure is to obtain a mobile station capable of suppressing a deterioration in service quality in a cell in which a plurality of mobile stations exist.
  • the present disclosure provides a plurality of wireless communication paths between a mobile body equipped with a plurality of mobile stations and a terrestrial communication control device connected to a plurality of base stations. It is a mobile station in an existing communication system.
  • the mobile station uses the transmission / reception unit that transmits / receives data to / from the base station, the identification information of the mobile body, the identification information of the mobile station, or the identification information of the base station, and uses the identification information of the mobile station to the terrestrial communication control device. It is characterized by including a control unit for determining whether or not to perform location registration.
  • the mobile station according to the present disclosure has an effect that deterioration of service quality can be suppressed in a cell in which a plurality of mobile stations exist.
  • Block diagram showing a configuration example of a base station according to the first embodiment Block diagram showing a configuration example of a mobile station according to the first embodiment
  • the mobile station, base station, communication system, control circuit, storage medium, and communication control method according to the embodiment of the present disclosure will be described in detail below with reference to the drawings.
  • the description is based on the assumption that the moving body is a train, but the description is not limited to this.
  • FIG. 1 is a diagram showing a configuration example of the communication system 1 according to the first embodiment.
  • the communication system 1 includes an application server 100, a ground communication control device 101, base stations 102 and 103, and a mobile body 110.
  • the application server 100 is a server that realizes services that require uplink user data communication at regular intervals, such as voice services and automatic train operation.
  • the application server 100 communicates with the terminal 109 of the mobile body 110.
  • the terrestrial communication control device 101 is connected to the application server 100 and the base stations 102 and 103.
  • the terrestrial communication control device 101 transfers the data from the application server 100 to the base stations 102 and 103 that perform wireless communication in order to deliver the data to the terminal 109. Further, the terrestrial communication control device 101 transfers the data from the terminal 109 transferred from the base stations 102 and 103 to the application server 100.
  • the base station 102 has identification information, that is, "102" as a base station identification number, and constitutes a cell 104.
  • the base station 103 has identification information, that is, "103" as a base station identification number, and constitutes cell 105. It is assumed that the cells 104 and 105 overlap in the communication system 1 and the moving body 110 exists in the region where the cells 104 and 105 overlap.
  • the base station identification number may be referred to as base station identification information.
  • the mobile body 110 has identification information, that is, "110" as a mobile body identification number.
  • the mobile identification number may be referred to as mobile identification information.
  • the mobile body 110 includes mobile stations 106 and 107, an on-board communication control device 108, and a terminal 109.
  • the mobile station 106 has identification information, that is, "106" as a mobile station identification number.
  • the mobile station 106 directs the antenna to the left in FIG. 1 and attempts to connect to the base station 102 constituting the cell 104.
  • the mobile station 107 has identification information, that is, "107" as a mobile station identification number.
  • the mobile station 107 directs the antenna to the right in FIG. 1 and attempts to connect to the base station 103 constituting the cell 105.
  • the mobile station identification number may be referred to as mobile station identification information.
  • the on-board communication control device 108 is connected to the terminal 109 and the mobile stations 106 and 107.
  • the on-board communication control device 108 transfers the data from the terminal 109 to the mobile stations 106 and 107 that perform wireless communication in order to deliver the data to the application server 100. Further, the on-board communication control device 108 transfers the data from the application server 100 transferred from the mobile stations 106 and 107 to the terminal 109.
  • the terminal 109 receives from the application server 100 services such as voice service and automatic train operation that require uplink user data communication at regular intervals.
  • the terminal 109 transmits uplink user data communication to the application server 100 at regular intervals.
  • the communication system 1 is a communication system in which a plurality of wireless communication paths exist between a mobile body 110 equipped with a plurality of mobile stations 106 and 107 and a terrestrial communication control device 101 connected to the plurality of base stations 102 and 103. be.
  • FIG. 2 is a block diagram showing a configuration example of the base station 102 according to the first embodiment.
  • the base station 102 includes an antenna 200, a transmission / reception unit 201, a control unit 202, and a wired network interface unit 203.
  • the transmission / reception unit 201 is connected to the antenna 200 for wireless communication and transmits / receives data to / from the mobile station 106.
  • the control unit 202 controls the operation and communication protocol of each unit of the base station 102.
  • the wired network interface unit 203 transmits / receives data to / from the terrestrial communication control device 101.
  • FIG. 3 is a block diagram showing a configuration example of the mobile station 106 according to the first embodiment.
  • the mobile station 106 includes an antenna 300, a transmission / reception unit 301, a control unit 302, and a wired network interface unit 303.
  • the transmission / reception unit 301 is connected to the antenna 300 for wireless communication and transmits / receives data to / from the base station 102.
  • the control unit 302 controls the operation and communication protocol of each unit of the mobile station 106.
  • the wired network interface unit 303 transmits / receives data to / from the on-board communication control device 108.
  • FIG. 4 is a sequence diagram showing a control example of position registration by mobile stations 106 and 107 of the mobile body 110 in the communication system 1 according to the first embodiment.
  • the moving body 110 exists in the region where the cells 104 and 105 overlap (step S100).
  • the base station 103 transmits notification information including the base station identification number "103".
  • the mobile station 107 of the mobile body 110 receives broadcast information including the base station identification number “103” from the base station 103 (step S101).
  • the control unit 302 receives the broadcast information via the antenna 300 and the transmission / reception unit 301, and determines the position registration shown in FIG.
  • FIG. 5 is a flowchart showing a determination of position registration using the mobile identification number and the mobile station identification number by the mobile stations 106 and 107 of the mobile body 110 according to the first embodiment.
  • FIG. 6 is a diagram showing an example of a base station identification number list held by mobile stations 106 and 107 according to the first embodiment. Since the mobile stations 106 and 107 are set to be connected to the specific base stations 102 and 103, a list of base station identification numbers indicating the specific base stations 102 and 103 as shown in FIG. 6 is held in advance. It is assumed that there is. The mobile stations 106 and 107 may update the contents of the base station identification number list shown in FIG. 6 by the notification information from the base stations 102 and 103 and the like.
  • the control unit 302 of the mobile station 107 determines whether or not the mobile identification number "110" of the mobile 110 is an even number (step S201). ). Since the mobile identification number "110" of the mobile 110 is an even number (step S201: Yes), the control unit 302 of the mobile station 107 determines whether or not the mobile station identification number "107" is an even number (step S202). ..
  • step S202 Since the mobile station identification number “107” of the mobile station 107 is an odd number (step S202: No), the control unit 302 of the mobile station 107 determines that the location is not registered in the base station 103 (step S205). That is, the mobile station 107 determines in the position registration determination that the position is not registered (step S102).
  • the base station 102 transmits the broadcast information including the base station identification number “102”.
  • the mobile station 106 of the mobile body 110 receives broadcast information including the base station identification number “102” from the base station 102 (step S103).
  • the control unit 302 receives the broadcast information via the antenna 300 and the transmission / reception unit 301, and determines the position registration shown in FIG.
  • the control unit 302 of the mobile station 106 determines whether or not the base station identification number "102" received in the broadcast information has been registered in the base station identification number list shown in FIG. 6 (step S200). Since the base station identification number "102" has already been registered (step S200: Yes), the control unit 302 of the mobile station 106 determines whether or not the mobile identification number "110" of the mobile 110 is an even number (step S201). ). Since the mobile identification number "110" of the mobile 110 is an even number (step S201: Yes), the control unit 302 of the mobile station 106 determines whether or not the mobile station identification number "106" is an even number (step S202). ..
  • step S202 Since the mobile station identification number “106” of the mobile station 106 is an even number (step S202: Yes), the control unit 302 of the mobile station 106 determines that the location is registered in the base station 102 (step S204). That is, the mobile station 106 determines that the position is registered in the position registration determination (step S104).
  • step S200 the control unit 302 determines that the location is not registered in the base station (step S205). If the mobile identification number of the mobile 110 is odd (step S201: No), the control unit 302 determines whether the mobile station identification number is odd (step S203). When the mobile station identification number of the mobile station is odd (step S203: Yes), the control unit 302 determines that the location is registered in the base station (step S204). When the mobile station identification number of the mobile station is an even number (step S203: No), the control unit 302 determines that the location is not registered in the base station (step S205). In this way, the control unit 302 determines whether or not to register the position of the mobile station in the terrestrial communication control device 101 via the base station by using the mobile body identification information and the mobile station identification information.
  • the mobile station 106 makes a location registration request to the base station 102 (step S105).
  • the location registration request includes information on the mobile station identification number "106".
  • the network address "192.168.10.0" of the mobile body 110 to which the terminal 109 belongs, the subnet mask "255.255.255.0", the mobile body identification number "110", and the connection were made.
  • Information such as the base station identification number "102" of the base station 102 may be included.
  • the base station 102 transfers the location registration request to the terrestrial communication control device 101 (step S106).
  • the terrestrial communication control device 101 that has received the location registration request holds the location registration information about the mobile body 110 as shown in FIG.
  • FIG. 7 is a diagram showing an example of position registration information about the mobile body 110 held by the terrestrial communication control device 101 according to the first embodiment.
  • the terrestrial communication control device 101 has a network address "192.168.10.0", a subnet mask "255.255.255.0", a mobile identification number "110", and movement as location registration information for the mobile 110. It holds information such as the mobile station identification number "106" of the station 106 and the base station identification number "102" of the base station 102 to which the mobile station 106 is connected.
  • the terrestrial communication control device 101 returns a location registration response to the base station 102 (step S107).
  • the base station 102 that has received the location registration response holds the location registration information about the mobile station 106, as shown in FIG.
  • FIG. 8 is a diagram showing an example of location registration information held by the base station 102 according to the first embodiment.
  • the base station 102 has a network address "192.168.10.0", a subnet mask "255.255.255.0", a mobile identification number "110”, and a mobile station 106 as location registration information about the mobile station 106. Holds information such as the mobile station identification number "106" of.
  • the base station 102 transfers the location registration response to the mobile station 106 (step S108).
  • the mobile station 106 Upon receiving the location registration response, the mobile station 106 notifies the on-board communication control device 108 that wireless communication has become possible by means of a communication status notification (step S109). As shown in FIG. 9, the on-board communication control device 108 that has received the communication status notification holds the communication status information indicating that the mobile station 106 can communicate.
  • FIG. 9 is a diagram showing an example of communication state information of mobile stations 106 and 107 held by the on-board communication control device 108 according to the first embodiment. As communication status information, the on-board communication control device 108 indicates that the mobile station 106 having the mobile station identification number "106" is in the communication state and the mobile station 107 having the mobile station identification number "107" is not in the communication state. To hold.
  • the application server 100 and the terminal 109 can transmit and receive data via the terrestrial communication control device 101, the base station 102, the mobile station 106, and the on-board communication control device 108 (). Step S110).
  • the mobile station identification number of one mobile station is an even number
  • the mobile station identification number of the other mobile station is an odd number. do.
  • the transmission / reception unit 301 is a communication device.
  • the wired network interface unit 303 is an interface circuit.
  • the control unit 302 is realized by a processing circuit.
  • the processing circuit may be a processor and memory for executing a program stored in the memory, or may be dedicated hardware.
  • the processing circuit is also called a control circuit.
  • FIG. 10 is a diagram showing a configuration example of a processing circuit 90 when the processing circuits included in the mobile stations 106 and 107 according to the first embodiment are realized by a processor and a memory.
  • the processing circuit 90 shown in FIG. 10 is a control circuit and includes a processor 91 and a memory 92.
  • each function of the processing circuit 90 is realized by software, firmware, or a combination of software and firmware.
  • the software or firmware is written as a program and stored in the memory 92.
  • each function is realized by the processor 91 reading and executing the program stored in the memory 92.
  • the processing circuit 90 includes a memory 92 for storing a program in which the processing of the mobile stations 106 and 107 is eventually executed. It can be said that this program is a program for causing the mobile stations 106 and 107 to execute each function realized by the processing circuit 90.
  • This program may be provided by a storage medium in which the program is stored, or may be provided by other means such as a communication medium.
  • the transmission / reception unit 301 uses the data transmission / reception step of transmitting / receiving data to / from the base station, and the control unit 302 uses the identification information of the mobile body and the identification information of the mobile station or the identification information of the base station. Therefore, it can be said that the program causes the mobile stations 106 and 107 to execute the control step of determining whether or not to register the position of the mobile station in the terrestrial communication control device 101.
  • the processor 91 is, for example, a CPU (Central Processing Unit), a processing device, an arithmetic unit, a microprocessor, a microcomputer, a DSP (Digital Signal Processor), or the like.
  • the memory 92 is, for example, non-volatile or volatile such as RAM (Random Access Memory), ROM (Read Only Memory), flash memory, EPROM (Erasable Programmable ROM), EEPROM (registered trademark) (Electrically EPROM). This includes semiconductor memory, magnetic disks, flexible disks, optical disks, compact disks, mini disks, DVDs (Digital Versatile Disc), and the like.
  • FIG. 11 is a diagram showing an example of a processing circuit 93 in the case where the processing circuits included in the mobile stations 106 and 107 according to the first embodiment are configured by dedicated hardware.
  • the processing circuit 93 shown in FIG. 11 is, for example, a single circuit, a composite circuit, a programmed processor, a parallel programmed processor, an ASIC (Application Specific Integrated Circuit), an FPGA (Field Programmable Gate Array), or a combination thereof. The thing is applicable.
  • the processing circuit a part may be realized by dedicated hardware and a part may be realized by software or firmware.
  • the processing circuit can realize each of the above-mentioned functions by the dedicated hardware, software, firmware, or a combination thereof.
  • the hardware configuration of the mobile stations 106 and 107 has been described, the hardware configuration of the base stations 102 and 103 is the same as the hardware configuration of the mobile stations 106 and 107.
  • the mobile stations 106 and 107 are When the broadcast information is received from the base station, it is decided whether or not to perform the location registration by using the mobile identification number and the mobile station identification number.
  • the mobile station 106 registers the position with the base station 102, and the mobile station 107 does not register the position with the base station 103.
  • the mobile stations 106 and 107 can suppress the deterioration of the uplink service quality in the cell by controlling the position registration in the cell where the mobile station is concentrated.
  • Embodiment 2 the mobile stations 106 and 107 use the mobile identification number and the mobile station identification number to determine whether or not to register the position with respect to the base station.
  • the mobile stations 106 and 107 determine whether or not to perform location registration by using the mobile identification number and the base station identification number will be described.
  • the configurations of the communication system 1, the base stations 102 and 103, and the mobile stations 106 and 107 are the same as those of the first embodiment shown in FIGS. 1 to 3, respectively.
  • the sequence diagram of the control example of the position registration by the mobile stations 106 and 107 of the mobile body 110 in the communication system 1 is the same as the sequence diagram in the first embodiment shown in FIG.
  • the method of determining the position registration by the mobile stations 106 and 107 is different.
  • FIG. 12 is a flowchart showing a determination of position registration using the mobile identification number and the base station identification number by the mobile stations 106 and 107 of the mobile body 110 according to the second embodiment.
  • the control unit 302 of the mobile station 107 After steps S100 and S101 of the sequence diagram shown in FIG. 4, the control unit 302 of the mobile station 107 has registered the base station identification number “103” received in the broadcast information in the base station identification number list shown in FIG. (Step S300). Since the base station identification number "103" has already been registered (step S300: Yes), the control unit 302 of the mobile station 107 determines whether or not the base station identification number "103" of the base station 103 is an even number (step S301). ). Since the base station identification number "103" of the base station 103 is an odd number (step S301: No), the control unit 302 of the mobile station 107 determines whether or not the mobile identification number "110" is an odd number (step S303). ..
  • step S303: No the control unit 302 of the mobile station 107 determines that the location is not registered in the base station 103 (step S305). That is, the mobile station 107 determines in the position registration determination that the position is not registered (step S102).
  • step S300 the control unit 302 of the mobile station 106 determines whether or not the base station identification number “102” received in the broadcast information has been registered in the base station identification number list shown in FIG. Determine (step S300). Since the base station identification number "102" has already been registered (step S300: Yes), the control unit 302 of the mobile station 106 determines whether or not the base station identification number "102" of the base station 102 is an even number (step S301). ). Since the base station identification number "102" of the base station 102 is an even number (step S301: Yes), the control unit 302 of the mobile station 106 determines whether or not the mobile identification number "110" is an even number (step S302). ..
  • step S302 the control unit 302 of the mobile station 106 determines that the position is registered in the base station 102 (step S304). That is, the mobile station 106 determines that the position is registered in the position registration determination (step S104).
  • step S300: No when the base station identification number is not registered (step S300: No), the control unit 302 determines that the location is not registered in the base station (step S305).
  • step S302: No the control unit 302 determines that the location is not registered in the base station (step S305).
  • step S303: Yes the control unit 302 determines that the location is registered in the base station (step S304). In this way, the control unit 302 determines whether or not to register the position of the mobile station in the terrestrial communication control device 101 via the base station by using the mobile body identification information and the base station identification information.
  • the base station identification number of one base station is an even number
  • the base station identification number of the other base station is an odd number. The same shall apply to the subsequent embodiments.
  • the mobile stations 106 and 107 when the mobile stations 106 and 107 receive the broadcast information from the base station, whether or not the mobile stations 106 and 107 perform location registration using the mobile identification number and the base station identification number. It was decided to determine. Also in this case, the same effect as that of the first embodiment can be obtained.
  • Embodiment 3 the mobile stations 106 and 107 determine whether or not to register the position with respect to the base station. In the third embodiment, a case where the base stations 102 and 103 determine whether or not to register the position of the mobile station will be described.
  • FIG. 13 is a sequence diagram showing a control example of the position registration of the mobile stations 106 and 107 of the mobile body 110 by the base stations 102 and 103 in the communication system 1 according to the third embodiment.
  • the moving body 110 exists in the region where the cells 104 and 105 overlap (step S400).
  • the base station 103 transmits notification information including the base station identification number "103".
  • the mobile station 107 of the mobile body 110 receives broadcast information including the base station identification number “103” from the base station 103 (step S401).
  • the mobile station 107 which has received the broadcast information from the base station 103, makes a location registration request to the base station 103 (step S402).
  • the location registration request includes information on the mobile identification number "110" and the mobile station identification number "107”, but the network address "192.168.10.0" of the mobile 110 to which the terminal 109 belongs and the subnet mask. Information such as "255.255.255.0" and the base station identification number "103" of the connected base station 103 may be included.
  • FIG. 14 is a flowchart showing a determination of position registration using the mobile identification number and the base station identification number by the base stations 102 and 103 according to the third embodiment.
  • the control unit 202 of the base station 103 determines whether or not the base station identification number "103" of the base station 103 is an even number (step S500). Since the base station identification number "103" of the base station 103 is an odd number (step S500: No), the control unit 202 of the base station 103 determines whether or not the mobile identification number "110" is an odd number (step S502). .. Since the mobile identification number "110" of the mobile 110 is an even number (step S502: No), the control unit 202 of the base station 103 determines that the mobile station 107 is not registered in the base station 103 (step S504). That is, the base station 103 determines in the location registration determination that the location is not registered (step S403). The control unit 202 of the base station 103 returns a position registration response (NG) indicating that the position is not registered to the mobile station 107 (step S404).
  • NG position registration response
  • the base station 102 transmits the broadcast information including the base station identification number “102”.
  • the mobile station 106 of the mobile body 110 receives broadcast information including the base station identification number “102” from the base station 102 (step S405).
  • the mobile station 106 which has received the broadcast information from the base station 102, makes a location registration request to the base station 102 (step S406).
  • the location registration request includes information on the mobile identification number "110" and the mobile station identification number "106", but the network address "192.168.10.0" of the mobile 110 to which the terminal 109 belongs and the subnet mask. Information such as "255.255.255.0" and the base station identification number "102" of the connected base station 102 may be included.
  • the control unit 202 receives the position registration request from the mobile station 106 via the antenna 200 and the transmission / reception unit 201, and determines the position registration shown in FIG.
  • the control unit 202 of the base station 102 determines whether or not the base station identification number "102" of the base station 102 is an even number (step S500). Since the base station identification number "102" of the base station 102 is an even number (step S500: Yes), the control unit 202 of the base station 102 determines whether or not the mobile identification number "110" is an even number (step S501). .. Since the mobile identification number “110” of the mobile 110 is an even number (step S501: Yes), the control unit 202 of the base station 102 determines that the mobile station 106 is registered in the base station 102 (step S503). That is, the base station 102 determines that the position is registered in the position registration determination (step S407).
  • step S500: Yes when the base station identification number of the base station is an even number (step S500: Yes) and the moving body identification number of the moving body is an odd number (step S501: No), the control unit 202 It is determined that the mobile station is not registered in the base station (step S504).
  • step S503 When the base station identification number of the base station is odd (step S500: No) and the mobile identification number of the mobile is odd (step S502: Yes), the control unit 202 positions the mobile station at the base station. It is determined to register (step S503). In this way, the control unit 202 controls the position registration of the mobile station in the terrestrial communication control device 101 by using the mobile body identification information and the base station identification information. Specifically, the control unit 202 determines whether or not to register the position of the mobile station in the terrestrial communication control device 101 by using the mobile body identification information and the base station identification information.
  • the base station 102 transfers the location registration request to the terrestrial communication control device 101 (step S408).
  • the ground communication control device 101 that has received the location registration request holds the location registration information about the mobile body 110.
  • the terrestrial communication control device 101 returns a location registration response to the base station 102 (step S409).
  • the base station 102 that has received the location registration response holds the location registration information about the mobile station 106.
  • the base station 102 transfers the location registration response to the mobile station 106 (step S410).
  • the mobile station 106 Upon receiving the location registration response, the mobile station 106 notifies the on-board communication control device 108 that wireless communication has become possible by means of a communication status notification (step S411). As shown in FIG. 9, the on-board communication control device 108 that has received the communication status notification holds the communication status information indicating that the mobile station 106 can communicate.
  • the application server 100 and the terminal 109 can transmit and receive data via the terrestrial communication control device 101, the base station 102, the mobile station 106, and the on-board communication control device 108 (). Step S412).
  • the base stations 102 and 103 when the base stations 102 and 103 receive the location registration request from the mobile station, do the base stations 102 and 103 perform location registration using the mobile identification number and the base station identification number? It was decided to judge whether or not. Also in this case, the same effect as that of the first and second embodiments can be obtained.
  • Embodiment 4 the base stations 102 and 103 determine whether or not to register the position of the mobile station. In the fourth embodiment, a case where the base stations 102 and 103 determine whether or not to allocate uplink radio resources to the mobile station will be described.
  • FIG. 15 is a sequence diagram showing a control example of allocating uplink radio resources to mobile stations 106 and 107 of the mobile body 110 by base stations 102 and 103 in the communication system 1 according to the fourth embodiment.
  • the moving body 110 exists in the region where the cells 104 and 105 overlap (step S600).
  • the base station 103 transmits notification information including the base station identification number "103".
  • the mobile station 107 of the mobile body 110 receives broadcast information including the base station identification number “103” from the base station 103 (step S601).
  • the mobile station 107 which has received the broadcast information from the base station 103, makes a location registration request to the base station 103 (step S602).
  • the location registration request includes information on the mobile identification number "110" and the mobile station identification number "107”, but the network address "192.168.10.0" of the mobile 110 to which the terminal 109 belongs and the subnet mask. Information such as "255.255.255.0" and the base station identification number "103" of the connected base station 103 may be included.
  • the control unit 202 receives the position registration request from the mobile station 107 via the antenna 200 and the transmission / reception unit 201, and determines the uplink radio resource allocation shown in FIG.
  • FIG. 16 is a flowchart showing a determination of uplink radio resource allocation using the mobile identification number and the base station identification number by the base stations 102 and 103 according to the fourth embodiment.
  • the control unit 202 of the base station 103 determines whether or not the base station identification number "103" of the base station 103 is an even number (step S700). Since the base station identification number "103" of the base station 103 is an odd number (step S700: No), the control unit 202 of the base station 103 determines whether or not the mobile identification number "110" is an odd number (step S702). .. Since the mobile identification number "110" of the mobile 110 is an even number (step S702: No), the control unit 202 of the base station 103 determines that the mobile station 107 is not allocated the uplink radio resource (step S704). .. That is, the base station 103 determines that the uplink radio resource is not allocated in the uplink radio resource allocation determination (step S603).
  • the base station 103 transfers the location registration request to the terrestrial communication control device 101 (step S604).
  • the ground communication control device 101 that has received the location registration request holds the location registration information about the mobile station 107 of the mobile body 110.
  • FIG. 17 is a diagram showing an example of position registration information about the mobile body 110 held by the terrestrial communication control device 101 according to the fourth embodiment.
  • the terrestrial communication control device 101 has a network address "192.168.10.0", a subnet mask "255.255.255.0", a mobile identification number "110”, and movement as location registration information for the mobile 110.
  • the terrestrial communication control device 101 holds information such as the mobile station identification number "107" of the station 107 and the base station identification number "103" of the base station 103 to which the mobile station 107 is connected.
  • the terrestrial communication control device 101 returns a location registration response to the base station 103 (step S605).
  • the base station 103 that has received the location registration response holds the location registration information about the mobile station 107, as shown in FIG. FIG. 18 is a diagram showing an example of location registration information held by the base station 103 according to the fourth embodiment.
  • the base station 103 has a network address "192.168.10.0", a subnet mask "255.255.255.0", a mobile identification number "110”, and a mobile station 107 as location registration information about the mobile station 107. Holds information such as the mobile station identification number "107" and the uplink radio resource allocation "x”.
  • the base station 103 notifies the mobile station 107 of a location registration response indicating that the uplink radio resource is not allocated (step S606).
  • the base station 102 transmits the broadcast information including the base station identification number "102".
  • the mobile station 106 of the mobile body 110 receives broadcast information including the base station identification number “102” from the base station 102 (step S607).
  • the mobile station 106 which has received the broadcast information from the base station 102, makes a location registration request to the base station 102 (step S608).
  • the location registration request includes information on the mobile identification number "110" and the mobile station identification number "106", but the network address "192.168.10.0" of the mobile 110 to which the terminal 109 belongs and the subnet mask. Information such as "255.255.255.0" and the base station identification number "102" of the connected base station 102 may be included.
  • the control unit 202 receives the location registration request from the mobile station 106 via the antenna 200 and the transmission / reception unit 201, and determines the uplink radio resource allocation shown in FIG.
  • the control unit 202 of the base station 102 determines whether or not the base station identification number "102" of the base station 102 is an even number (step S700). Since the base station identification number "102" of the base station 102 is an even number (step S700: Yes), the control unit 202 of the base station 102 determines whether or not the mobile identification number "110" is an even number (step S701). .. Since the mobile identification number “110” of the mobile 110 is an even number (step S701: Yes), the control unit 202 of the base station 102 determines that the mobile station 106 is allocated the uplink radio resource (step S703). That is, the base station 102 determines that the uplink radio resource is allocated in the uplink radio resource allocation determination (step S609).
  • step S700: Yes when the base station identification number of the base station 102 is an even number (step S700: Yes) and the moving body identification number of the moving body is an odd number (step S701: No), the control unit 202 , It is determined that the uplink radio resource is not allocated to the mobile station (step S704).
  • step S700: No When the base station identification number of the base station 102 is odd (step S700: No) and the mobile identification number of the mobile is odd (step S702: Yes), the control unit 202 uplinks to the mobile station. It is determined that the radio resource is allocated (step S703). In this way, the control unit 202 controls the position registration of the mobile station in the terrestrial communication control device 101 by using the mobile body identification information and the base station identification information.
  • control unit 202 uses the mobile body identification information and the base station identification information to register the position of the mobile station in the terrestrial communication control device 101, from the mobile station to the base station with respect to the mobile station. Determines whether to allocate radio resources in the uplink direction to.
  • the base station 102 transfers the location registration request to the terrestrial communication control device 101 (step S610).
  • the ground communication control device 101 that has received the location registration request holds the location registration information about the mobile station 106 of the mobile body 110.
  • the terrestrial communication control device 101 has a network address "192.168.10.0", a subnet mask "255.255.255.0", a mobile identification number "110”, and movement as location registration information for the mobile 110. It holds information such as the mobile station identification number "106" of the station 106 and the base station identification number "102" of the base station 102 to which the mobile station 106 is connected.
  • the terrestrial communication control device 101 returns a location registration response to the base station 102 (step S611).
  • the base station 102 that has received the location registration response holds the location registration information regarding the mobile station 106.
  • the base station 102 transfers the location registration response to the mobile station 106 (step S612).
  • the mobile station 106 Upon receiving the location registration response, the mobile station 106 notifies the on-board communication control device 108 that wireless communication has become possible by means of a communication status notification (step S613).
  • the on-board communication control device 108 that has received the communication status notification holds the communication status information indicating that the mobile station 106 can communicate.
  • the application server 100 and the terminal 109 can transmit and receive data via the terrestrial communication control device 101, the base station 102, the mobile station 106, and the on-board communication control device 108. Further, in the communication system 1, the application server 100 transmits data to the terminal 109, that is, downlinks, via the ground communication control device 101, the base station 103, the mobile station 107, and the on-board communication control device 108. It can be transmitted (step S614).
  • the base stations 102 and 103 when the base stations 102 and 103 receive the location registration request from the mobile station, the base stations 102 and 103 use the mobile identification number and the base station identification number to the mobile station. It was decided to determine whether or not to allocate uplink radio resources. Also in this case, the same effect as in the first to third embodiments can be obtained.
  • the configuration shown in the above embodiments is an example, and can be combined with another known technique, can be combined with each other, and does not deviate from the gist. It is also possible to omit or change a part of the configuration.
  • 1 communication system 100 application server, 101 terrestrial communication control device, 102, 103 base station, 104, 105 cell, 106, 107 mobile station, 108 on-board communication control device, 109 terminal, 110 mobile body, 200, 300 antenna, 201,301 transmission / reception unit, 202,302 control unit, 203,303 wired network interface unit.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mechanical Engineering (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Computer Security & Cryptography (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

A mobile station (106) in a communication system in which there are a plurality of wireless communication paths between a moving body, which is equipped with a plurality of mobile stations, and a ground communication control device connected to a plurality of base stations, said mobile station (106) being provided with: a transmission/reception unit (301) which transmits data to and receives data from the base stations; and a control unit (302) which uses identification information about the moving body and either identification information about the mobile station (106) or identification information about a base station to determine whether or not to register the location of the mobile station (106) in the ground communication control device.

Description

移動局、基地局、通信システム、制御回路、記憶媒体および通信制御方法Mobile stations, base stations, communication systems, control circuits, storage media and communication control methods
　本開示は、移動体に搭載される移動局、基地局、通信システム、制御回路、記憶媒体および通信制御方法に関する。 The present disclosure relates to a mobile station, a base station, a communication system, a control circuit, a storage medium, and a communication control method mounted on a mobile body.
　列車、バスなどの移動体に対して、無線通信を用いて自動運転などの制御を行うシステムが検討されている。移動体への制御では、一定周期でのユーザデータ通信が必要な場合がある。しかしながら、移動体が移動することによって、移動体が接続する基地局を変更するハンドオーバが発生する。ハンドオーバが発生すると、一般的にユーザデータ通信が断となる。このような問題に対して、特許文献１には、移動体の前後に複数の無線機を配置することで、ハンドオーバ時においても１つの無線機が通信状態を維持する技術が開示されている。 A system that controls automatic driving, etc. using wireless communication for moving objects such as trains and buses is being studied. Control to a mobile body may require user data communication at regular intervals. However, as the mobile body moves, a handover that changes the base station to which the mobile body is connected occurs. When a handover occurs, user data communication is generally cut off. To solve such a problem, Patent Document 1 discloses a technique in which a plurality of radios are arranged in front of and behind a mobile body so that one radio maintains a communication state even at the time of handover.
特開２０１８－１２７１７９号公報JP-A-2018-127179
　列車、バスなどの移動体は、駅、営業所など特定の場所に集まる場合がある。１つの基地局がカバーするエリア（以下、セルと称する）内に多数の移動体が集まると、移動体に配置された多数の移動局が１つの基地局に位置登録されることになる。 Mobile objects such as trains and buses may gather in specific places such as stations and sales offices. When a large number of mobiles are gathered in an area (hereinafter referred to as a cell) covered by one base station, a large number of mobile stations arranged on the mobiles are registered in one base station.
　１つの基地局に位置登録される移動局の数が一定周期内に基地局が割り当て可能な移動局から基地局方向（以下、アップリンクと称する）の無線リソース数より多くなると、基地局は、位置登録されている一部の移動局に対して、一定周期でアップリンクの無線リソースを割り当てることが出来なくなる、という問題があった。具体的には、自動運転、音声サービスなどのように一定周期で必ずユーザデータ通信が必要なアプリケーションにおいて、サービス品質を維持できなくなる。 When the number of mobile stations registered in one base station exceeds the number of radio resources in the direction of the base station (hereinafter referred to as uplink) from the mobile station to which the base station can be assigned within a fixed cycle, the base station becomes There is a problem that uplink radio resources cannot be allocated to some mobile stations whose locations are registered at regular intervals. Specifically, service quality cannot be maintained in applications that require user data communication at regular intervals, such as autonomous driving and voice services.
　本開示は、上記に鑑みてなされたものであって、複数の移動局が存在するセルにおいてサービス品質の低下を抑制可能な移動局を得ることを目的とする。 The present disclosure has been made in view of the above, and an object of the present disclosure is to obtain a mobile station capable of suppressing a deterioration in service quality in a cell in which a plurality of mobile stations exist.
　上述した課題を解決し、目的を達成するために、本開示は、複数の移動局を搭載する移動体と複数の基地局に接続される地上通信制御装置との間で複数の無線通信経路が存在する通信システムにおける移動局である。移動局は、基地局との間でデータ送受信を行う送受信部と、移動体の識別情報と、移動局の識別情報または基地局の識別情報とを用いて、地上通信制御装置への移動局の位置登録を行うか否かを判定する制御部と、を備えることを特徴とする。 In order to solve the above-mentioned problems and achieve the object, the present disclosure provides a plurality of wireless communication paths between a mobile body equipped with a plurality of mobile stations and a terrestrial communication control device connected to a plurality of base stations. It is a mobile station in an existing communication system. The mobile station uses the transmission / reception unit that transmits / receives data to / from the base station, the identification information of the mobile body, the identification information of the mobile station, or the identification information of the base station, and uses the identification information of the mobile station to the terrestrial communication control device. It is characterized by including a control unit for determining whether or not to perform location registration.
　本開示に係る移動局は、複数の移動局が存在するセルにおいてサービス品質の低下を抑制できる、という効果を奏する。 The mobile station according to the present disclosure has an effect that deterioration of service quality can be suppressed in a cell in which a plurality of mobile stations exist.
実施の形態１に係る通信システムの構成例を示す図The figure which shows the configuration example of the communication system which concerns on Embodiment 1. 実施の形態１に係る基地局の構成例を示すブロック図Block diagram showing a configuration example of a base station according to the first embodiment 実施の形態１に係る移動局の構成例を示すブロック図Block diagram showing a configuration example of a mobile station according to the first embodiment 実施の形態１に係る通信システムにおける移動体の移動局による位置登録の制御例を示すシーケンス図A sequence diagram showing a control example of position registration by a mobile station of a mobile body in the communication system according to the first embodiment. 実施の形態１に係る移動体の移動局による移動体識別番号および移動局識別番号を用いた位置登録の判定を示すフローチャートA flowchart showing a determination of position registration using a mobile identification number and a mobile station identification number by the mobile station of the mobile according to the first embodiment. 実施の形態１に係る移動局が保持する基地局識別番号リストの例を示す図The figure which shows the example of the base station identification number list held by the mobile station which concerns on Embodiment 1. 実施の形態１に係る地上通信制御装置が保持する移動体についての位置登録情報の例を示す図The figure which shows the example of the position registration information about the mobile body held by the terrestrial communication control device which concerns on Embodiment 1. 実施の形態１に係る基地局が保持する位置登録情報の例を示す図The figure which shows the example of the location registration information held by the base station which concerns on Embodiment 1. 実施の形態１に係る車上通信制御装置が保持する移動局の通信状態情報の例を示す図The figure which shows the example of the communication state information of the mobile station held by the on-board communication control device which concerns on Embodiment 1. 実施の形態１に係る移動局が備える処理回路をプロセッサおよびメモリで実現する場合の処理回路の構成例を示す図The figure which shows the structural example of the processing circuit when the processing circuit provided in the mobile station which concerns on Embodiment 1 is realized by a processor and a memory. 実施の形態１に係る移動局が備える処理回路を専用のハードウェアで構成する場合の処理回路の例を示す図The figure which shows the example of the processing circuit in the case where the processing circuit provided in the mobile station which concerns on Embodiment 1 is configured by exclusive hardware. 実施の形態２に係る移動体の移動局による移動体識別番号および基地局識別番号を用いた位置登録の判定を示すフローチャートA flowchart showing a determination of position registration using a mobile identification number and a base station identification number by the mobile station of the mobile according to the second embodiment. 実施の形態３に係る通信システムにおける基地局による移動体の移動局の位置登録の制御例を示すシーケンス図A sequence diagram showing a control example of position registration of a mobile station of a mobile body by a base station in the communication system according to the third embodiment. 実施の形態３に係る基地局による移動体識別番号および基地局識別番号を用いた位置登録の判定を示すフローチャートA flowchart showing a determination of location registration using the mobile identification number and the base station identification number by the base station according to the third embodiment. 実施の形態４に係る通信システムにおける基地局による移動体の移動局に対するアップリンクの無線リソースの割り当ての制御例を示すシーケンス図A sequence diagram showing an example of control of allocation of uplink radio resources to a mobile station of a mobile body by a base station in the communication system according to the fourth embodiment. 実施の形態４に係る基地局による移動体識別番号および基地局識別番号を用いたアップリンク無線リソース割り当ての判定を示すフローチャートA flowchart showing a determination of uplink radio resource allocation using the mobile identification number and the base station identification number by the base station according to the fourth embodiment. 実施の形態４に係る地上通信制御装置が保持する移動体についての位置登録情報の例を示す図The figure which shows the example of the position registration information about the mobile body held by the terrestrial communication control device which concerns on Embodiment 4. 実施の形態４に係る基地局が保持する位置登録情報の例を示す図The figure which shows the example of the location registration information held by the base station which concerns on Embodiment 4.
　以下に、本開示の実施の形態に係る移動局、基地局、通信システム、制御回路、記憶媒体および通信制御方法を図面に基づいて詳細に説明する。なお、以下の説明では、移動体を列車とした前提で説明するが、これに限定されない。 The mobile station, base station, communication system, control circuit, storage medium, and communication control method according to the embodiment of the present disclosure will be described in detail below with reference to the drawings. In the following description, the description is based on the assumption that the moving body is a train, but the description is not limited to this.
実施の形態１．
　図１は、実施の形態１に係る通信システム１の構成例を示す図である。通信システム１は、アプリサーバ１００と、地上通信制御装置１０１と、基地局１０２，１０３と、移動体１１０と、を備える。 Embodiment 1.
FIG. 1 is a diagram showing a configuration example of the communication system 1 according to the first embodiment. The communication system 1 includes an application server 100, a ground communication control device 101, base stations 102 and 103, and a mobile body 110.
　アプリサーバ１００は、音声サービス、列車の自動運転など一定周期でアップリンクのユーザデータ通信が必要なサービスを実現するサーバである。アプリサーバ１００は、移動体１１０の端末１０９と通信を行う。 The application server 100 is a server that realizes services that require uplink user data communication at regular intervals, such as voice services and automatic train operation. The application server 100 communicates with the terminal 109 of the mobile body 110.
　地上通信制御装置１０１は、アプリサーバ１００および基地局１０２，１０３と接続している。地上通信制御装置１０１は、アプリサーバ１００からのデータを端末１０９まで届けるため、無線通信を行う基地局１０２，１０３に転送する。また、地上通信制御装置１０１は、基地局１０２，１０３から転送されてきた端末１０９からのデータを、アプリサーバ１００に転送する。 The terrestrial communication control device 101 is connected to the application server 100 and the base stations 102 and 103. The terrestrial communication control device 101 transfers the data from the application server 100 to the base stations 102 and 103 that perform wireless communication in order to deliver the data to the terminal 109. Further, the terrestrial communication control device 101 transfers the data from the terminal 109 transferred from the base stations 102 and 103 to the application server 100.
　基地局１０２は、識別情報、すなわち基地局識別番号として「１０２」を持ち、セル１０４を構成している。基地局１０３は、識別情報、すなわち基地局識別番号として「１０３」を持ち、セル１０５を構成している。通信システム１においてセル１０４，１０５はオーバラップしており、移動体１１０は、セル１０４，１０５がオーバラップした領域に存在しているものとする。以降の説明において、基地局識別番号のことを基地局の識別情報と称する場合がある。 The base station 102 has identification information, that is, "102" as a base station identification number, and constitutes a cell 104. The base station 103 has identification information, that is, "103" as a base station identification number, and constitutes cell 105. It is assumed that the cells 104 and 105 overlap in the communication system 1 and the moving body 110 exists in the region where the cells 104 and 105 overlap. In the following description, the base station identification number may be referred to as base station identification information.
　移動体１１０は、識別情報、すなわち移動体識別番号として「１１０」を持つ。以降の説明において、移動体識別番号のことを移動体の識別情報と称する場合がある。移動体１１０は、移動局１０６，１０７と、車上通信制御装置１０８と、端末１０９と、を備える。 The mobile body 110 has identification information, that is, "110" as a mobile body identification number. In the following description, the mobile identification number may be referred to as mobile identification information. The mobile body 110 includes mobile stations 106 and 107, an on-board communication control device 108, and a terminal 109.
　移動局１０６は、識別情報、すなわち移動局識別番号として「１０６」を持つ。移動局１０６は、図１の左向きにアンテナの指向性を向け、セル１０４を構成する基地局１０２との接続を試みる。移動局１０７は、識別情報、すなわち移動局識別番号として「１０７」を持つ。移動局１０７は、図１の右向きにアンテナの指向性を向け、セル１０５を構成する基地局１０３との接続を試みる。以降の説明において、移動局識別番号のことを移動局の識別情報と称する場合がある。 The mobile station 106 has identification information, that is, "106" as a mobile station identification number. The mobile station 106 directs the antenna to the left in FIG. 1 and attempts to connect to the base station 102 constituting the cell 104. The mobile station 107 has identification information, that is, "107" as a mobile station identification number. The mobile station 107 directs the antenna to the right in FIG. 1 and attempts to connect to the base station 103 constituting the cell 105. In the following description, the mobile station identification number may be referred to as mobile station identification information.
　車上通信制御装置１０８は、端末１０９および移動局１０６，１０７と接続している。車上通信制御装置１０８は、端末１０９からのデータをアプリサーバ１００まで届けるため、無線通信を行う移動局１０６，１０７に転送する。また、車上通信制御装置１０８は、移動局１０６，１０７から転送されてきたアプリサーバ１００からのデータを、端末１０９に転送する。 The on-board communication control device 108 is connected to the terminal 109 and the mobile stations 106 and 107. The on-board communication control device 108 transfers the data from the terminal 109 to the mobile stations 106 and 107 that perform wireless communication in order to deliver the data to the application server 100. Further, the on-board communication control device 108 transfers the data from the application server 100 transferred from the mobile stations 106 and 107 to the terminal 109.
　端末１０９は、アプリサーバ１００から、音声サービス、列車の自動運転など一定周期でアップリンクのユーザデータ通信が必要なサービスの提供を受ける。端末１０９は、一定周期でアップリンクのユーザデータ通信をアプリサーバ１００に向けて送信する。 The terminal 109 receives from the application server 100 services such as voice service and automatic train operation that require uplink user data communication at regular intervals. The terminal 109 transmits uplink user data communication to the application server 100 at regular intervals.
　通信システム１は、複数の移動局１０６，１０７を搭載する移動体１１０と複数の基地局１０２，１０３に接続される地上通信制御装置１０１との間で複数の無線通信経路が存在する通信システムである。 The communication system 1 is a communication system in which a plurality of wireless communication paths exist between a mobile body 110 equipped with a plurality of mobile stations 106 and 107 and a terrestrial communication control device 101 connected to the plurality of base stations 102 and 103. be.
　つづいて、各装置の構成について説明する。まず、基地局１０２，１０３の構成について説明する。基地局１０２，１０３は同様の構成のため、基地局１０２を例にして説明する。図２は、実施の形態１に係る基地局１０２の構成例を示すブロック図である。基地局１０２は、アンテナ２００と、送受信部２０１と、制御部２０２と、有線ネットワークインターフェース部２０３と、を備える。送受信部２０１は、無線通信用のアンテナ２００に接続され、移動局１０６との間でデータ送受信を行う。制御部２０２は、基地局１０２の各部の動作および通信プロトコルを制御する。有線ネットワークインターフェース部２０３は、地上通信制御装置１０１とデータ送受信を行う。 Next, the configuration of each device will be explained. First, the configurations of the base stations 102 and 103 will be described. Since the base stations 102 and 103 have the same configuration, the base station 102 will be described as an example. FIG. 2 is a block diagram showing a configuration example of the base station 102 according to the first embodiment. The base station 102 includes an antenna 200, a transmission / reception unit 201, a control unit 202, and a wired network interface unit 203. The transmission / reception unit 201 is connected to the antenna 200 for wireless communication and transmits / receives data to / from the mobile station 106. The control unit 202 controls the operation and communication protocol of each unit of the base station 102. The wired network interface unit 203 transmits / receives data to / from the terrestrial communication control device 101.
　つぎに、移動局１０６，１０７の構成について説明する。移動局１０６，１０７は同様の構成のため、移動局１０６を例にして説明する。図３は、実施の形態１に係る移動局１０６の構成例を示すブロック図である。移動局１０６は、アンテナ３００と、送受信部３０１と、制御部３０２と、有線ネットワークインターフェース部３０３と、を備える。送受信部３０１は、無線通信用のアンテナ３００に接続され、基地局１０２との間でデータ送受信を行う。制御部３０２は、移動局１０６の各部の動作および通信プロトコルを制御する。有線ネットワークインターフェース部３０３は、車上通信制御装置１０８とデータ送受信を行う。 Next, the configurations of mobile stations 106 and 107 will be described. Since the mobile stations 106 and 107 have the same configuration, the mobile station 106 will be described as an example. FIG. 3 is a block diagram showing a configuration example of the mobile station 106 according to the first embodiment. The mobile station 106 includes an antenna 300, a transmission / reception unit 301, a control unit 302, and a wired network interface unit 303. The transmission / reception unit 301 is connected to the antenna 300 for wireless communication and transmits / receives data to / from the base station 102. The control unit 302 controls the operation and communication protocol of each unit of the mobile station 106. The wired network interface unit 303 transmits / receives data to / from the on-board communication control device 108.
　つづいて、通信システム１において、移動局１０６，１０７の位置登録を制御する動作について説明する。本実施の形態では、移動局１０６，１０７が、位置登録を行うか否かを判定する場合について説明する。図４は、実施の形態１に係る通信システム１における移動体１１０の移動局１０６，１０７による位置登録の制御例を示すシーケンス図である。移動体１１０は、セル１０４，１０５がオーバラップした領域に存在する（ステップＳ１００）。 Next, the operation of controlling the location registration of the mobile stations 106 and 107 in the communication system 1 will be described. In the present embodiment, a case where the mobile stations 106 and 107 determine whether or not to perform location registration will be described. FIG. 4 is a sequence diagram showing a control example of position registration by mobile stations 106 and 107 of the mobile body 110 in the communication system 1 according to the first embodiment. The moving body 110 exists in the region where the cells 104 and 105 overlap (step S100).
　基地局１０３は、基地局識別番号「１０３」を含む報知情報を送信する。移動体１１０の移動局１０７は、基地局１０３から基地局識別番号「１０３」を含む報知情報を受信する（ステップＳ１０１）。移動局１０７では、アンテナ３００および送受信部３０１を経由して、制御部３０２が、報知情報を受信し、図５に示す位置登録の判定を行う。図５は、実施の形態１に係る移動体１１０の移動局１０６，１０７による移動体識別番号および移動局識別番号を用いた位置登録の判定を示すフローチャートである。 The base station 103 transmits notification information including the base station identification number "103". The mobile station 107 of the mobile body 110 receives broadcast information including the base station identification number “103” from the base station 103 (step S101). In the mobile station 107, the control unit 302 receives the broadcast information via the antenna 300 and the transmission / reception unit 301, and determines the position registration shown in FIG. FIG. 5 is a flowchart showing a determination of position registration using the mobile identification number and the mobile station identification number by the mobile stations 106 and 107 of the mobile body 110 according to the first embodiment.
　移動局１０７の制御部３０２は、報知情報で受信した基地局識別番号「１０３」が図６に示す基地局識別番号リストに登録済か否かを判定する（ステップＳ２００）。図６は、実施の形態１に係る移動局１０６，１０７が保持する基地局識別番号リストの例を示す図である。移動局１０６，１０７は、特定の基地局１０２，１０３に接続することが設定されているので、図６に示すような特定の基地局１０２，１０３を示す基地局識別番号リストを予め保持しているものとする。なお、移動局１０６，１０７は、基地局１０２，１０３からの報知情報などによって、図６に示す基地局識別番号リストの内容を更新してもよい。移動局１０６，１０７は、図６に示す基地局識別番号リストに該当する基地局１０２，１０３に位置登録する場合、位置登録を行うか否かの判定を行う。基地局識別番号「１０３」は登録済のため（ステップＳ２００：Ｙｅｓ）、移動局１０７の制御部３０２は、移動体１１０の移動体識別番号「１１０」が偶数か否かを判定する（ステップＳ２０１）。移動体１１０の移動体識別番号「１１０」は偶数のため（ステップＳ２０１：Ｙｅｓ）、移動局１０７の制御部３０２は、移動局識別番号「１０７」が偶数か否かを判定する（ステップＳ２０２）。移動局１０７の移動局識別番号「１０７」は奇数のため（ステップＳ２０２：Ｎｏ）、移動局１０７の制御部３０２は、基地局１０３に位置登録しないと判定する（ステップＳ２０５）。すなわち、移動局１０７は、位置登録判定において、位置登録しないと判定する（ステップＳ１０２）。 The control unit 302 of the mobile station 107 determines whether or not the base station identification number "103" received in the broadcast information has been registered in the base station identification number list shown in FIG. 6 (step S200). FIG. 6 is a diagram showing an example of a base station identification number list held by mobile stations 106 and 107 according to the first embodiment. Since the mobile stations 106 and 107 are set to be connected to the specific base stations 102 and 103, a list of base station identification numbers indicating the specific base stations 102 and 103 as shown in FIG. 6 is held in advance. It is assumed that there is. The mobile stations 106 and 107 may update the contents of the base station identification number list shown in FIG. 6 by the notification information from the base stations 102 and 103 and the like. When the mobile stations 106 and 107 register their positions in the base stations 102 and 103 corresponding to the base station identification number list shown in FIG. 6, they determine whether or not to perform the position registration. Since the base station identification number "103" has already been registered (step S200: Yes), the control unit 302 of the mobile station 107 determines whether or not the mobile identification number "110" of the mobile 110 is an even number (step S201). ). Since the mobile identification number "110" of the mobile 110 is an even number (step S201: Yes), the control unit 302 of the mobile station 107 determines whether or not the mobile station identification number "107" is an even number (step S202). .. Since the mobile station identification number “107” of the mobile station 107 is an odd number (step S202: No), the control unit 302 of the mobile station 107 determines that the location is not registered in the base station 103 (step S205). That is, the mobile station 107 determines in the position registration determination that the position is not registered (step S102).
　図４に示すシーケンス図に戻って、基地局１０２は、基地局識別番号「１０２」を含む報知情報を送信する。移動体１１０の移動局１０６は、基地局１０２から基地局識別番号「１０２」を含む報知情報を受信する（ステップＳ１０３）。移動局１０６では、アンテナ３００および送受信部３０１を経由して、制御部３０２が、報知情報を受信し、図５に示す位置登録の判定を行う。 Returning to the sequence diagram shown in FIG. 4, the base station 102 transmits the broadcast information including the base station identification number “102”. The mobile station 106 of the mobile body 110 receives broadcast information including the base station identification number “102” from the base station 102 (step S103). In the mobile station 106, the control unit 302 receives the broadcast information via the antenna 300 and the transmission / reception unit 301, and determines the position registration shown in FIG.
　移動局１０６の制御部３０２は、報知情報で受信した基地局識別番号「１０２」が図６に示す基地局識別番号リストに登録済か否かを判定する（ステップＳ２００）。基地局識別番号「１０２」は登録済のため（ステップＳ２００：Ｙｅｓ）、移動局１０６の制御部３０２は、移動体１１０の移動体識別番号「１１０」が偶数か否かを判定する（ステップＳ２０１）。移動体１１０の移動体識別番号「１１０」は偶数のため（ステップＳ２０１：Ｙｅｓ）、移動局１０６の制御部３０２は、移動局識別番号「１０６」が偶数か否かを判定する（ステップＳ２０２）。移動局１０６の移動局識別番号「１０６」は偶数のため（ステップＳ２０２：Ｙｅｓ）、移動局１０６の制御部３０２は、基地局１０２に位置登録すると判定する（ステップＳ２０４）。すなわち、移動局１０６は、位置登録判定において、位置登録すると判定する（ステップＳ１０４）。 The control unit 302 of the mobile station 106 determines whether or not the base station identification number "102" received in the broadcast information has been registered in the base station identification number list shown in FIG. 6 (step S200). Since the base station identification number "102" has already been registered (step S200: Yes), the control unit 302 of the mobile station 106 determines whether or not the mobile identification number "110" of the mobile 110 is an even number (step S201). ). Since the mobile identification number "110" of the mobile 110 is an even number (step S201: Yes), the control unit 302 of the mobile station 106 determines whether or not the mobile station identification number "106" is an even number (step S202). .. Since the mobile station identification number “106” of the mobile station 106 is an even number (step S202: Yes), the control unit 302 of the mobile station 106 determines that the location is registered in the base station 102 (step S204). That is, the mobile station 106 determines that the position is registered in the position registration determination (step S104).
　なお、図５に示すフローチャートにおいて、基地局識別番号が登録済ではない場合（ステップＳ２００：Ｎｏ）、制御部３０２は、基地局に位置登録しないと判定する（ステップＳ２０５）。また、移動体１１０の移動体識別番号が奇数の場合（ステップＳ２０１：Ｎｏ）、制御部３０２は、移動局識別番号が奇数か否かを判定する（ステップＳ２０３）。移動局の移動局識別番号が奇数の場合（ステップＳ２０３：Ｙｅｓ）、制御部３０２は、基地局に位置登録すると判定する（ステップＳ２０４）。移動局の移動局識別番号が偶数の場合（ステップＳ２０３：Ｎｏ）、制御部３０２は、基地局に位置登録しないと判定する（ステップＳ２０５）。このように、制御部３０２は、移動体識別情報と、移動局識別情報とを用いて、基地局を介して地上通信制御装置１０１への移動局の位置登録を行うか否かを判定する。 In the flowchart shown in FIG. 5, when the base station identification number is not registered (step S200: No), the control unit 302 determines that the location is not registered in the base station (step S205). If the mobile identification number of the mobile 110 is odd (step S201: No), the control unit 302 determines whether the mobile station identification number is odd (step S203). When the mobile station identification number of the mobile station is odd (step S203: Yes), the control unit 302 determines that the location is registered in the base station (step S204). When the mobile station identification number of the mobile station is an even number (step S203: No), the control unit 302 determines that the location is not registered in the base station (step S205). In this way, the control unit 302 determines whether or not to register the position of the mobile station in the terrestrial communication control device 101 via the base station by using the mobile body identification information and the mobile station identification information.
　図４に示すシーケンス図に戻って、移動局１０６は、基地局１０２に位置登録要求を行う（ステップＳ１０５）。位置登録要求には、移動局識別番号「１０６」の情報が含まれる。なお、位置登録要求には、端末１０９が属する移動体１１０のネットワークアドレス「１９２．１６８．１０．０」、サブネットマスク「２５５．２５５．２５５．０」、移動体識別番号「１１０」、接続した基地局１０２の基地局識別番号「１０２」などの情報が含まれていてもよい。基地局１０２は、地上通信制御装置１０１へ位置登録要求を転送する（ステップＳ１０６）。 Returning to the sequence diagram shown in FIG. 4, the mobile station 106 makes a location registration request to the base station 102 (step S105). The location registration request includes information on the mobile station identification number "106". In the location registration request, the network address "192.168.10.0" of the mobile body 110 to which the terminal 109 belongs, the subnet mask "255.255.255.0", the mobile body identification number "110", and the connection were made. Information such as the base station identification number "102" of the base station 102 may be included. The base station 102 transfers the location registration request to the terrestrial communication control device 101 (step S106).
　位置登録要求を受信した地上通信制御装置１０１は、図７に示すように、移動体１１０についての位置登録情報を保持する。図７は、実施の形態１に係る地上通信制御装置１０１が保持する移動体１１０についての位置登録情報の例を示す図である。地上通信制御装置１０１は、移動体１１０についての位置登録情報として、ネットワークアドレス「１９２．１６８．１０．０」、サブネットマスク「２５５．２５５．２５５．０」、移動体識別番号「１１０」、移動局１０６の移動局識別番号「１０６」、移動局１０６が接続した基地局１０２の基地局識別番号「１０２」などの情報を保持する。地上通信制御装置１０１は、移動体１１０についての位置登録情報を保持すると、基地局１０２へ位置登録応答を返す（ステップＳ１０７）。 The terrestrial communication control device 101 that has received the location registration request holds the location registration information about the mobile body 110 as shown in FIG. FIG. 7 is a diagram showing an example of position registration information about the mobile body 110 held by the terrestrial communication control device 101 according to the first embodiment. The terrestrial communication control device 101 has a network address "192.168.10.0", a subnet mask "255.255.255.0", a mobile identification number "110", and movement as location registration information for the mobile 110. It holds information such as the mobile station identification number "106" of the station 106 and the base station identification number "102" of the base station 102 to which the mobile station 106 is connected. When the terrestrial communication control device 101 holds the location registration information about the mobile body 110, the terrestrial communication control device 101 returns a location registration response to the base station 102 (step S107).
　位置登録応答を受信した基地局１０２は、図８に示すように、移動局１０６についての位置登録情報を保持する。図８は、実施の形態１に係る基地局１０２が保持する位置登録情報の例を示す図である。基地局１０２は、移動局１０６についての位置登録情報として、ネットワークアドレス「１９２．１６８．１０．０」、サブネットマスク「２５５．２５５．２５５．０」、移動体識別番号「１１０」、移動局１０６の移動局識別番号「１０６」などの情報を保持する。基地局１０２は、移動局１０６についての位置登録情報を保持すると、移動局１０６へ位置登録応答を転送する（ステップＳ１０８）。 The base station 102 that has received the location registration response holds the location registration information about the mobile station 106, as shown in FIG. FIG. 8 is a diagram showing an example of location registration information held by the base station 102 according to the first embodiment. The base station 102 has a network address "192.168.10.0", a subnet mask "255.255.255.0", a mobile identification number "110", and a mobile station 106 as location registration information about the mobile station 106. Holds information such as the mobile station identification number "106" of. When the base station 102 holds the location registration information about the mobile station 106, the base station 102 transfers the location registration response to the mobile station 106 (step S108).
　位置登録応答を受信した移動局１０６は、車上通信制御装置１０８に対して、無線通信が可能となったことを通信状態通知にて通知する（ステップＳ１０９）。通信状態通知を受信した車上通信制御装置１０８は、図９に示すように、移動局１０６の通信が可能となったことを示す通信状態情報を保持する。図９は、実施の形態１に係る車上通信制御装置１０８が保持する移動局１０６，１０７の通信状態情報の例を示す図である。車上通信制御装置１０８は、通信状態情報として、移動局識別番号「１０６」の移動局１０６が通信状態にあり、移動局識別番号「１０７」の移動局１０７が通信状態にないことを示す情報を保持する。 Upon receiving the location registration response, the mobile station 106 notifies the on-board communication control device 108 that wireless communication has become possible by means of a communication status notification (step S109). As shown in FIG. 9, the on-board communication control device 108 that has received the communication status notification holds the communication status information indicating that the mobile station 106 can communicate. FIG. 9 is a diagram showing an example of communication state information of mobile stations 106 and 107 held by the on-board communication control device 108 according to the first embodiment. As communication status information, the on-board communication control device 108 indicates that the mobile station 106 having the mobile station identification number "106" is in the communication state and the mobile station 107 having the mobile station identification number "107" is not in the communication state. To hold.
　これにより、通信システム１において、アプリサーバ１００および端末１０９は、地上通信制御装置１０１、基地局１０２、移動局１０６、および車上通信制御装置１０８を経由して、データ送受信を行うことができる（ステップＳ１１０）。 As a result, in the communication system 1, the application server 100 and the terminal 109 can transmit and receive data via the terrestrial communication control device 101, the base station 102, the mobile station 106, and the on-board communication control device 108 (). Step S110).
　なお、本実施の形態では、移動体１１０が備える移動局１０６，１０７の移動局識別番号について、一方の移動局の移動局識別番号を偶数とし、他方の移動局の移動局識別番号を奇数とする。 In the present embodiment, regarding the mobile station identification numbers of the mobile stations 106 and 107 included in the mobile body 110, the mobile station identification number of one mobile station is an even number, and the mobile station identification number of the other mobile station is an odd number. do.
　つづいて、移動局１０６，１０７のハードウェア構成について説明する。移動局１０６，１０７において、送受信部３０１は通信機である。有線ネットワークインターフェース部３０３は、インターフェース回路である。制御部３０２は、処理回路により実現される。処理回路は、メモリに格納されるプログラムを実行するプロセッサおよびメモリであってもよいし、専用のハードウェアであってもよい。処理回路は制御回路とも呼ばれる。 Next, the hardware configuration of the mobile stations 106 and 107 will be described. In the mobile stations 106 and 107, the transmission / reception unit 301 is a communication device. The wired network interface unit 303 is an interface circuit. The control unit 302 is realized by a processing circuit. The processing circuit may be a processor and memory for executing a program stored in the memory, or may be dedicated hardware. The processing circuit is also called a control circuit.
　図１０は、実施の形態１に係る移動局１０６，１０７が備える処理回路をプロセッサおよびメモリで実現する場合の処理回路９０の構成例を示す図である。図１０に示す処理回路９０は制御回路であり、プロセッサ９１およびメモリ９２を備える。処理回路９０がプロセッサ９１およびメモリ９２で構成される場合、処理回路９０の各機能は、ソフトウェア、ファームウェア、またはソフトウェアとファームウェアとの組み合わせにより実現される。ソフトウェアまたはファームウェアはプログラムとして記述され、メモリ９２に格納される。処理回路９０では、メモリ９２に記憶されたプログラムをプロセッサ９１が読み出して実行することにより、各機能を実現する。すなわち、処理回路９０は、移動局１０６，１０７の処理が結果的に実行されることになるプログラムを格納するためのメモリ９２を備える。このプログラムは、処理回路９０により実現される各機能を移動局１０６，１０７に実行させるためのプログラムであるともいえる。このプログラムは、プログラムが記憶された記憶媒体により提供されてもよいし、通信媒体など他の手段により提供されてもよい。 FIG. 10 is a diagram showing a configuration example of a processing circuit 90 when the processing circuits included in the mobile stations 106 and 107 according to the first embodiment are realized by a processor and a memory. The processing circuit 90 shown in FIG. 10 is a control circuit and includes a processor 91 and a memory 92. When the processing circuit 90 is composed of the processor 91 and the memory 92, each function of the processing circuit 90 is realized by software, firmware, or a combination of software and firmware. The software or firmware is written as a program and stored in the memory 92. In the processing circuit 90, each function is realized by the processor 91 reading and executing the program stored in the memory 92. That is, the processing circuit 90 includes a memory 92 for storing a program in which the processing of the mobile stations 106 and 107 is eventually executed. It can be said that this program is a program for causing the mobile stations 106 and 107 to execute each function realized by the processing circuit 90. This program may be provided by a storage medium in which the program is stored, or may be provided by other means such as a communication medium.
　上記プログラムは、送受信部３０１が、基地局との間でデータ送受信を行うデータ送受信ステップと、制御部３０２が、移動体の識別情報と、移動局の識別情報または基地局の識別情報とを用いて、地上通信制御装置１０１への移動局の位置登録を行うか否かを判定する制御ステップと、を移動局１０６，１０７に実行させるプログラムであるとも言える。 In the above program, the transmission / reception unit 301 uses the data transmission / reception step of transmitting / receiving data to / from the base station, and the control unit 302 uses the identification information of the mobile body and the identification information of the mobile station or the identification information of the base station. Therefore, it can be said that the program causes the mobile stations 106 and 107 to execute the control step of determining whether or not to register the position of the mobile station in the terrestrial communication control device 101.
　ここで、プロセッサ９１は、例えば、ＣＰＵ（Central　Processing　Unit）、処理装置、演算装置、マイクロプロセッサ、マイクロコンピュータ、またはＤＳＰ（Digital　Signal　Processor）などである。また、メモリ９２は、例えば、ＲＡＭ（Random　Access　Memory）、ＲＯＭ（Read　Only　Memory）、フラッシュメモリ、ＥＰＲＯＭ（Erasable　Programmable　ＲＯＭ）、ＥＥＰＲＯＭ（登録商標）（Electrically　ＥＰＲＯＭ）などの、不揮発性または揮発性の半導体メモリ、磁気ディスク、フレキシブルディスク、光ディスク、コンパクトディスク、ミニディスク、またはＤＶＤ（Digital　Versatile　Disc）などが該当する。 Here, the processor 91 is, for example, a CPU (Central Processing Unit), a processing device, an arithmetic unit, a microprocessor, a microcomputer, a DSP (Digital Signal Processor), or the like. The memory 92 is, for example, non-volatile or volatile such as RAM (Random Access Memory), ROM (Read Only Memory), flash memory, EPROM (Erasable Programmable ROM), EEPROM (registered trademark) (Electrically EPROM). This includes semiconductor memory, magnetic disks, flexible disks, optical disks, compact disks, mini disks, DVDs (Digital Versatile Disc), and the like.
　図１１は、実施の形態１に係る移動局１０６，１０７が備える処理回路を専用のハードウェアで構成する場合の処理回路９３の例を示す図である。図１１に示す処理回路９３は、例えば、単一回路、複合回路、プログラム化したプロセッサ、並列プログラム化したプロセッサ、ＡＳＩＣ（Application　Specific　Integrated　Circuit）、ＦＰＧＡ（Field　Programmable　Gate　Array）、またはこれらを組み合わせたものが該当する。処理回路については、一部を専用のハードウェアで実現し、一部をソフトウェアまたはファームウェアで実現するようにしてもよい。このように、処理回路は、専用のハードウェア、ソフトウェア、ファームウェア、またはこれらの組み合わせによって、上述の各機能を実現することができる。 FIG. 11 is a diagram showing an example of a processing circuit 93 in the case where the processing circuits included in the mobile stations 106 and 107 according to the first embodiment are configured by dedicated hardware. The processing circuit 93 shown in FIG. 11 is, for example, a single circuit, a composite circuit, a programmed processor, a parallel programmed processor, an ASIC (Application Specific Integrated Circuit), an FPGA (Field Programmable Gate Array), or a combination thereof. The thing is applicable. As for the processing circuit, a part may be realized by dedicated hardware and a part may be realized by software or firmware. As described above, the processing circuit can realize each of the above-mentioned functions by the dedicated hardware, software, firmware, or a combination thereof.
　なお、移動局１０６，１０７のハードウェア構成について説明したが、基地局１０２，１０３のハードウェア構成についても、移動局１０６，１０７のハードウェア構成と同様である。 Although the hardware configuration of the mobile stations 106 and 107 has been described, the hardware configuration of the base stations 102 and 103 is the same as the hardware configuration of the mobile stations 106 and 107.
　以上説明したように、本実施の形態によれば、移動体１１０に複数の移動局１０６，１０７が配置されることで複数の通信経路が存在する通信システム１において、移動局１０６，１０７は、基地局から報知情報を受信した場合、移動体識別番号および移動局識別番号を用いて、位置登録を行うか否かを判定することとした。実施の形態１の例では、移動局１０６が基地局１０２への位置登録を行い、移動局１０７が基地局１０３への位置登録を行わない。これにより、移動局１０６，１０７は、移動局が集中するセルにおける位置登録を制御することで、セルにおけるアップリンクのサービス品質の低下を抑制することができる。 As described above, according to the present embodiment, in the communication system 1 in which a plurality of mobile stations 106 and 107 are arranged on the mobile body 110 and a plurality of communication paths exist, the mobile stations 106 and 107 are When the broadcast information is received from the base station, it is decided whether or not to perform the location registration by using the mobile identification number and the mobile station identification number. In the example of the first embodiment, the mobile station 106 registers the position with the base station 102, and the mobile station 107 does not register the position with the base station 103. As a result, the mobile stations 106 and 107 can suppress the deterioration of the uplink service quality in the cell by controlling the position registration in the cell where the mobile station is concentrated.
実施の形態２．
　実施の形態１では、移動局１０６，１０７が、移動体識別番号および移動局識別番号を用いて、基地局に対して位置登録を行うか否かを判定していた。実施の形態２では、移動局１０６，１０７が、移動体識別番号および基地局識別番号を用いて、位置登録を行うか否かを判定する場合について説明する。 Embodiment 2.
In the first embodiment, the mobile stations 106 and 107 use the mobile identification number and the mobile station identification number to determine whether or not to register the position with respect to the base station. In the second embodiment, a case where the mobile stations 106 and 107 determine whether or not to perform location registration by using the mobile identification number and the base station identification number will be described.
　実施の形態２において、通信システム１、基地局１０２，１０３、および移動局１０６，１０７の構成は、それぞれ、図１から図３に示す実施の形態１のときの構成と同様である。また、実施の形態２において、通信システム１における移動体１１０の移動局１０６，１０７による位置登録の制御例のシーケンス図は、図４に示す実施の形態１のときのシーケンス図と同様である。実施の形態２では、移動局１０６，１０７による位置登録の判定方法が異なる。図１２は、実施の形態２に係る移動体１１０の移動局１０６，１０７による移動体識別番号および基地局識別番号を用いた位置登録の判定を示すフローチャートである。 In the second embodiment, the configurations of the communication system 1, the base stations 102 and 103, and the mobile stations 106 and 107 are the same as those of the first embodiment shown in FIGS. 1 to 3, respectively. Further, in the second embodiment, the sequence diagram of the control example of the position registration by the mobile stations 106 and 107 of the mobile body 110 in the communication system 1 is the same as the sequence diagram in the first embodiment shown in FIG. In the second embodiment, the method of determining the position registration by the mobile stations 106 and 107 is different. FIG. 12 is a flowchart showing a determination of position registration using the mobile identification number and the base station identification number by the mobile stations 106 and 107 of the mobile body 110 according to the second embodiment.
　図４に示すシーケンス図のステップＳ１００，Ｓ１０１の後、移動局１０７の制御部３０２は、報知情報で受信した基地局識別番号「１０３」が図６に示す基地局識別番号リストに登録済か否かを判定する（ステップＳ３００）。基地局識別番号「１０３」は登録済のため（ステップＳ３００：Ｙｅｓ）、移動局１０７の制御部３０２は、基地局１０３の基地局識別番号「１０３」が偶数か否かを判定する（ステップＳ３０１）。基地局１０３の基地局識別番号「１０３」は奇数のため（ステップＳ３０１：Ｎｏ）、移動局１０７の制御部３０２は、移動体識別番号「１１０」が奇数か否かを判定する（ステップＳ３０３）。移動体１１０の移動体識別番号「１１０」は偶数のため（ステップＳ３０３：Ｎｏ）、移動局１０７の制御部３０２は、基地局１０３に位置登録しないと判定する（ステップＳ３０５）。すなわち、移動局１０７は、位置登録判定において、位置登録しないと判定する（ステップＳ１０２）。 After steps S100 and S101 of the sequence diagram shown in FIG. 4, the control unit 302 of the mobile station 107 has registered the base station identification number “103” received in the broadcast information in the base station identification number list shown in FIG. (Step S300). Since the base station identification number "103" has already been registered (step S300: Yes), the control unit 302 of the mobile station 107 determines whether or not the base station identification number "103" of the base station 103 is an even number (step S301). ). Since the base station identification number "103" of the base station 103 is an odd number (step S301: No), the control unit 302 of the mobile station 107 determines whether or not the mobile identification number "110" is an odd number (step S303). .. Since the mobile identification number “110” of the mobile 110 is an even number (step S303: No), the control unit 302 of the mobile station 107 determines that the location is not registered in the base station 103 (step S305). That is, the mobile station 107 determines in the position registration determination that the position is not registered (step S102).
　図４に示すシーケンス図のステップＳ１０３の後、移動局１０６の制御部３０２は、報知情報で受信した基地局識別番号「１０２」が図６に示す基地局識別番号リストに登録済か否かを判定する（ステップＳ３００）。基地局識別番号「１０２」は登録済のため（ステップＳ３００：Ｙｅｓ）、移動局１０６の制御部３０２は、基地局１０２の基地局識別番号「１０２」が偶数か否かを判定する（ステップＳ３０１）。基地局１０２の基地局識別番号「１０２」は偶数のため（ステップＳ３０１：Ｙｅｓ）、移動局１０６の制御部３０２は、移動体識別番号「１１０」が偶数か否かを判定する（ステップＳ３０２）。移動体１１０の移動局識別番号「１１０」は偶数のため（ステップＳ３０２：Ｙｅｓ）、移動局１０６の制御部３０２は、基地局１０２に位置登録すると判定する（ステップＳ３０４）。すなわち、移動局１０６は、位置登録判定において、位置登録すると判定する（ステップＳ１０４）。 After step S103 of the sequence diagram shown in FIG. 4, the control unit 302 of the mobile station 106 determines whether or not the base station identification number “102” received in the broadcast information has been registered in the base station identification number list shown in FIG. Determine (step S300). Since the base station identification number "102" has already been registered (step S300: Yes), the control unit 302 of the mobile station 106 determines whether or not the base station identification number "102" of the base station 102 is an even number (step S301). ). Since the base station identification number "102" of the base station 102 is an even number (step S301: Yes), the control unit 302 of the mobile station 106 determines whether or not the mobile identification number "110" is an even number (step S302). .. Since the mobile station identification number "110" of the mobile body 110 is an even number (step S302: Yes), the control unit 302 of the mobile station 106 determines that the position is registered in the base station 102 (step S304). That is, the mobile station 106 determines that the position is registered in the position registration determination (step S104).
　なお、図１２に示すフローチャートにおいて、基地局識別番号が登録済ではない場合（ステップＳ３００：Ｎｏ）、制御部３０２は、基地局に位置登録しないと判定する（ステップＳ３０５）。移動体１１０の移動体識別番号が奇数の場合（ステップＳ３０２：Ｎｏ）、制御部３０２は、基地局に位置登録しないと判定する（ステップＳ３０５）。移動体１１０の移動体識別番号が奇数の場合（ステップＳ３０３：Ｙｅｓ）、制御部３０２は、基地局に位置登録すると判定する（ステップＳ３０４）。このように、制御部３０２は、移動体識別情報と、基地局識別情報とを用いて、基地局を介して地上通信制御装置１０１への移動局の位置登録を行うか否かを判定する。 In the flowchart shown in FIG. 12, when the base station identification number is not registered (step S300: No), the control unit 302 determines that the location is not registered in the base station (step S305). When the mobile identification number of the mobile 110 is odd (step S302: No), the control unit 302 determines that the location is not registered in the base station (step S305). When the mobile identification number of the mobile 110 is an odd number (step S303: Yes), the control unit 302 determines that the location is registered in the base station (step S304). In this way, the control unit 302 determines whether or not to register the position of the mobile station in the terrestrial communication control device 101 via the base station by using the mobile body identification information and the base station identification information.
　図４に示すシーケンス図に戻って、以降の動作は、実施の形態１のときと同様である。 Returning to the sequence diagram shown in FIG. 4, the subsequent operations are the same as in the first embodiment.
　なお、本実施の形態では、基地局１０２，１０３の基地局識別番号について、一方の基地局の基地局識別番号を偶数とし、他方の基地局の基地局識別番号を奇数とする。以降の実施の形態についても同様とする。 In the present embodiment, regarding the base station identification numbers of the base stations 102 and 103, the base station identification number of one base station is an even number, and the base station identification number of the other base station is an odd number. The same shall apply to the subsequent embodiments.
　以上説明したように、本実施の形態によれば、移動局１０６，１０７は、基地局から報知情報を受信した場合、移動体識別番号および基地局識別番号を用いて、位置登録を行うか否かを判定することとした。この場合においても、実施の形態１と同様の効果を得ることができる。 As described above, according to the present embodiment, when the mobile stations 106 and 107 receive the broadcast information from the base station, whether or not the mobile stations 106 and 107 perform location registration using the mobile identification number and the base station identification number. It was decided to determine. Also in this case, the same effect as that of the first embodiment can be obtained.
実施の形態３．
　実施の形態１，２では、移動局１０６，１０７が、基地局に対して位置登録を行うか否かを判定していた。実施の形態３では、基地局１０２，１０３が、移動局の位置登録を行うか否かを判定する場合について説明する。 Embodiment 3.
In the first and second embodiments, the mobile stations 106 and 107 determine whether or not to register the position with respect to the base station. In the third embodiment, a case where the base stations 102 and 103 determine whether or not to register the position of the mobile station will be described.
　実施の形態３において、通信システム１、基地局１０２，１０３、および移動局１０６，１０７の構成は、それぞれ、図１から図３に示す実施の形態１のときの構成と同様である。図１３は、実施の形態３に係る通信システム１における基地局１０２，１０３による移動体１１０の移動局１０６，１０７の位置登録の制御例を示すシーケンス図である。移動体１１０は、セル１０４，１０５がオーバラップした領域に存在する（ステップＳ４００）。 In the third embodiment, the configurations of the communication system 1, the base stations 102 and 103, and the mobile stations 106 and 107 are the same as those of the first embodiment shown in FIGS. 1 to 3, respectively. FIG. 13 is a sequence diagram showing a control example of the position registration of the mobile stations 106 and 107 of the mobile body 110 by the base stations 102 and 103 in the communication system 1 according to the third embodiment. The moving body 110 exists in the region where the cells 104 and 105 overlap (step S400).
　基地局１０３は、基地局識別番号「１０３」を含む報知情報を送信する。移動体１１０の移動局１０７は、基地局１０３から基地局識別番号「１０３」を含む報知情報を受信する（ステップＳ４０１）。基地局１０３から報知情報を受信した移動局１０７は、基地局１０３に位置登録要求を行う（ステップＳ４０２）。位置登録要求には、移動体識別番号「１１０」および移動局識別番号「１０７」の情報が含まれるが、端末１０９が属する移動体１１０のネットワークアドレス「１９２．１６８．１０．０」、サブネットマスク「２５５．２５５．２５５．０」、接続した基地局１０３の基地局識別番号「１０３」などの情報を含んでもよい。基地局１０３では、アンテナ２００および送受信部２０１を経由して、制御部２０２が、移動局１０７からの位置登録要求を受信し、図１４に示す位置登録の判定を行う。図１４は、実施の形態３に係る基地局１０２，１０３による移動体識別番号および基地局識別番号を用いた位置登録の判定を示すフローチャートである。 The base station 103 transmits notification information including the base station identification number "103". The mobile station 107 of the mobile body 110 receives broadcast information including the base station identification number “103” from the base station 103 (step S401). The mobile station 107, which has received the broadcast information from the base station 103, makes a location registration request to the base station 103 (step S402). The location registration request includes information on the mobile identification number "110" and the mobile station identification number "107", but the network address "192.168.10.0" of the mobile 110 to which the terminal 109 belongs and the subnet mask. Information such as "255.255.255.0" and the base station identification number "103" of the connected base station 103 may be included. In the base station 103, the control unit 202 receives the position registration request from the mobile station 107 via the antenna 200 and the transmission / reception unit 201, and determines the position registration shown in FIG. FIG. 14 is a flowchart showing a determination of position registration using the mobile identification number and the base station identification number by the base stations 102 and 103 according to the third embodiment.
　基地局１０３の制御部２０２は、基地局１０３の基地局識別番号「１０３」が偶数か否かを判定する（ステップＳ５００）。基地局１０３の基地局識別番号「１０３」は奇数のため（ステップＳ５００：Ｎｏ）、基地局１０３の制御部２０２は、移動体識別番号「１１０」が奇数か否かを判定する（ステップＳ５０２）。移動体１１０の移動体識別番号「１１０」は偶数のため（ステップＳ５０２：Ｎｏ）、基地局１０３の制御部２０２は、移動局１０７を基地局１０３に位置登録しないと判定する（ステップＳ５０４）。すなわち、基地局１０３は、位置登録判定において、位置登録しないと判定する（ステップＳ４０３）。基地局１０３の制御部２０２は、移動局１０７へ、位置登録しないことを示す位置登録応答（ＮＧ）を返す（ステップＳ４０４）。 The control unit 202 of the base station 103 determines whether or not the base station identification number "103" of the base station 103 is an even number (step S500). Since the base station identification number "103" of the base station 103 is an odd number (step S500: No), the control unit 202 of the base station 103 determines whether or not the mobile identification number "110" is an odd number (step S502). .. Since the mobile identification number "110" of the mobile 110 is an even number (step S502: No), the control unit 202 of the base station 103 determines that the mobile station 107 is not registered in the base station 103 (step S504). That is, the base station 103 determines in the location registration determination that the location is not registered (step S403). The control unit 202 of the base station 103 returns a position registration response (NG) indicating that the position is not registered to the mobile station 107 (step S404).
　図１３に示すシーケンス図に戻って、基地局１０２は、基地局識別番号「１０２」を含む報知情報を送信する。移動体１１０の移動局１０６は、基地局１０２から基地局識別番号「１０２」を含む報知情報を受信する（ステップＳ４０５）。基地局１０２から報知情報を受信した移動局１０６は、基地局１０２に位置登録要求を行う（ステップＳ４０６）。位置登録要求には、移動体識別番号「１１０」および移動局識別番号「１０６」の情報が含まれるが、端末１０９が属する移動体１１０のネットワークアドレス「１９２．１６８．１０．０」、サブネットマスク「２５５．２５５．２５５．０」、接続した基地局１０２の基地局識別番号「１０２」などの情報を含んでもよい。基地局１０２では、アンテナ２００および送受信部２０１を経由して、制御部２０２が、移動局１０６からの位置登録要求を受信し、図１４に示す位置登録の判定を行う。 Returning to the sequence diagram shown in FIG. 13, the base station 102 transmits the broadcast information including the base station identification number “102”. The mobile station 106 of the mobile body 110 receives broadcast information including the base station identification number “102” from the base station 102 (step S405). The mobile station 106, which has received the broadcast information from the base station 102, makes a location registration request to the base station 102 (step S406). The location registration request includes information on the mobile identification number "110" and the mobile station identification number "106", but the network address "192.168.10.0" of the mobile 110 to which the terminal 109 belongs and the subnet mask. Information such as "255.255.255.0" and the base station identification number "102" of the connected base station 102 may be included. At the base station 102, the control unit 202 receives the position registration request from the mobile station 106 via the antenna 200 and the transmission / reception unit 201, and determines the position registration shown in FIG.
　基地局１０２の制御部２０２は、基地局１０２の基地局識別番号「１０２」が偶数か否かを判定する（ステップＳ５００）。基地局１０２の基地局識別番号「１０２」は偶数のため（ステップＳ５００：Ｙｅｓ）、基地局１０２の制御部２０２は、移動体識別番号「１１０」が偶数か否かを判定する（ステップＳ５０１）。移動体１１０の移動体識別番号「１１０」は偶数のため（ステップＳ５０１：Ｙｅｓ）、基地局１０２の制御部２０２は、移動局１０６を基地局１０２に位置登録すると判定する（ステップＳ５０３）。すなわち、基地局１０２は、位置登録判定において、位置登録すると判定する（ステップＳ４０７）。 The control unit 202 of the base station 102 determines whether or not the base station identification number "102" of the base station 102 is an even number (step S500). Since the base station identification number "102" of the base station 102 is an even number (step S500: Yes), the control unit 202 of the base station 102 determines whether or not the mobile identification number "110" is an even number (step S501). .. Since the mobile identification number “110” of the mobile 110 is an even number (step S501: Yes), the control unit 202 of the base station 102 determines that the mobile station 106 is registered in the base station 102 (step S503). That is, the base station 102 determines that the position is registered in the position registration determination (step S407).
　なお、図１４に示すフローチャートにおいて、基地局の基地局識別番号が偶数（ステップＳ５００：Ｙｅｓ）、かつ、移動体の移動体識別番号が奇数の場合（ステップＳ５０１：Ｎｏ）、制御部２０２は、移動局を基地局に位置登録しないと判定する（ステップＳ５０４）。また、基地局の基地局識別番号が奇数（ステップＳ５００：Ｎｏ）、かつ、移動体の移動体識別番号が奇数の場合（ステップＳ５０２：Ｙｅｓ）、制御部２０２は、移動局を基地局に位置登録すると判定する（ステップＳ５０３）。このように、制御部２０２は、移動体識別情報と、基地局識別情報とを用いて、地上通信制御装置１０１への移動局の位置登録を制御する。具体的には、制御部２０２は、移動体識別情報と、基地局識別情報とを用いて、地上通信制御装置１０１への移動局の位置登録を行うか否かを判定する。 In the flowchart shown in FIG. 14, when the base station identification number of the base station is an even number (step S500: Yes) and the moving body identification number of the moving body is an odd number (step S501: No), the control unit 202 It is determined that the mobile station is not registered in the base station (step S504). When the base station identification number of the base station is odd (step S500: No) and the mobile identification number of the mobile is odd (step S502: Yes), the control unit 202 positions the mobile station at the base station. It is determined to register (step S503). In this way, the control unit 202 controls the position registration of the mobile station in the terrestrial communication control device 101 by using the mobile body identification information and the base station identification information. Specifically, the control unit 202 determines whether or not to register the position of the mobile station in the terrestrial communication control device 101 by using the mobile body identification information and the base station identification information.
　図１３に示すシーケンス図に戻って、基地局１０２は、地上通信制御装置１０１へ位置登録要求を転送する（ステップＳ４０８）。位置登録要求を受信した地上通信制御装置１０１は、図７に示すように、移動体１１０についての位置登録情報を保持する。地上通信制御装置１０１は、移動体１１０についての位置登録情報を保持すると、基地局１０２へ位置登録応答を返す（ステップＳ４０９）。位置登録応答を受信した基地局１０２は、図８に示すように、移動局１０６についての位置登録情報を保持する。基地局１０２は、移動局１０６についての位置登録情報を保持すると、移動局１０６へ位置登録応答を転送する（ステップＳ４１０）。位置登録応答を受信した移動局１０６は、無線通信が可能となったことを車上通信制御装置１０８に通信状態通知にて通知する（ステップＳ４１１）。通信状態通知を受信した車上通信制御装置１０８は、図９に示すように、移動局１０６の通信が可能となったことを示す通信状態情報を保持する。 Returning to the sequence diagram shown in FIG. 13, the base station 102 transfers the location registration request to the terrestrial communication control device 101 (step S408). As shown in FIG. 7, the ground communication control device 101 that has received the location registration request holds the location registration information about the mobile body 110. When the terrestrial communication control device 101 holds the location registration information about the mobile body 110, the terrestrial communication control device 101 returns a location registration response to the base station 102 (step S409). As shown in FIG. 8, the base station 102 that has received the location registration response holds the location registration information about the mobile station 106. When the base station 102 holds the location registration information about the mobile station 106, the base station 102 transfers the location registration response to the mobile station 106 (step S410). Upon receiving the location registration response, the mobile station 106 notifies the on-board communication control device 108 that wireless communication has become possible by means of a communication status notification (step S411). As shown in FIG. 9, the on-board communication control device 108 that has received the communication status notification holds the communication status information indicating that the mobile station 106 can communicate.
　これにより、通信システム１において、アプリサーバ１００および端末１０９は、地上通信制御装置１０１、基地局１０２、移動局１０６、および車上通信制御装置１０８を経由して、データ送受信を行うことができる（ステップＳ４１２）。 As a result, in the communication system 1, the application server 100 and the terminal 109 can transmit and receive data via the terrestrial communication control device 101, the base station 102, the mobile station 106, and the on-board communication control device 108 (). Step S412).
　以上説明したように、本実施の形態によれば、基地局１０２，１０３は、移動局から位置登録要求を受信した場合、移動体識別番号および基地局識別番号を用いて、位置登録を行うか否かを判定することとした。この場合においても、実施の形態１，２と同様の効果を得ることができる。 As described above, according to the present embodiment, when the base stations 102 and 103 receive the location registration request from the mobile station, do the base stations 102 and 103 perform location registration using the mobile identification number and the base station identification number? It was decided to judge whether or not. Also in this case, the same effect as that of the first and second embodiments can be obtained.
実施の形態４．
　実施の形態３では、基地局１０２，１０３が、移動局の位置登録を行うか否かを判定していた。実施の形態４では、基地局１０２，１０３が、移動局に対してアップリンクの無線リソースの割り当てを行うか否かを判定する場合について説明する。 Embodiment 4.
In the third embodiment, the base stations 102 and 103 determine whether or not to register the position of the mobile station. In the fourth embodiment, a case where the base stations 102 and 103 determine whether or not to allocate uplink radio resources to the mobile station will be described.
　実施の形態４において、通信システム１、基地局１０２，１０３、および移動局１０６，１０７の構成は、それぞれ、図１から図３に示す実施の形態１のときの構成と同様である。図１５は、実施の形態４に係る通信システム１における基地局１０２，１０３による移動体１１０の移動局１０６，１０７に対するアップリンクの無線リソースの割り当ての制御例を示すシーケンス図である。移動体１１０は、セル１０４，１０５がオーバラップした領域に存在する（ステップＳ６００）。 In the fourth embodiment, the configurations of the communication system 1, the base stations 102 and 103, and the mobile stations 106 and 107 are the same as those of the first embodiment shown in FIGS. 1 to 3, respectively. FIG. 15 is a sequence diagram showing a control example of allocating uplink radio resources to mobile stations 106 and 107 of the mobile body 110 by base stations 102 and 103 in the communication system 1 according to the fourth embodiment. The moving body 110 exists in the region where the cells 104 and 105 overlap (step S600).
　基地局１０３は、基地局識別番号「１０３」を含む報知情報を送信する。移動体１１０の移動局１０７は、基地局１０３から基地局識別番号「１０３」を含む報知情報を受信する（ステップＳ６０１）。基地局１０３から報知情報を受信した移動局１０７は、基地局１０３に位置登録要求を行う（ステップＳ６０２）。位置登録要求には、移動体識別番号「１１０」および移動局識別番号「１０７」の情報が含まれるが、端末１０９が属する移動体１１０のネットワークアドレス「１９２．１６８．１０．０」、サブネットマスク「２５５．２５５．２５５．０」、接続した基地局１０３の基地局識別番号「１０３」などの情報を含んでもよい。基地局１０３では、アンテナ２００および送受信部２０１を経由して、制御部２０２が、移動局１０７からの位置登録要求を受信し、図１６に示すアップリンク無線リソース割り当ての判定を行う。図１６は、実施の形態４に係る基地局１０２，１０３による移動体識別番号および基地局識別番号を用いたアップリンク無線リソース割り当ての判定を示すフローチャートである。 The base station 103 transmits notification information including the base station identification number "103". The mobile station 107 of the mobile body 110 receives broadcast information including the base station identification number “103” from the base station 103 (step S601). The mobile station 107, which has received the broadcast information from the base station 103, makes a location registration request to the base station 103 (step S602). The location registration request includes information on the mobile identification number "110" and the mobile station identification number "107", but the network address "192.168.10.0" of the mobile 110 to which the terminal 109 belongs and the subnet mask. Information such as "255.255.255.0" and the base station identification number "103" of the connected base station 103 may be included. In the base station 103, the control unit 202 receives the position registration request from the mobile station 107 via the antenna 200 and the transmission / reception unit 201, and determines the uplink radio resource allocation shown in FIG. FIG. 16 is a flowchart showing a determination of uplink radio resource allocation using the mobile identification number and the base station identification number by the base stations 102 and 103 according to the fourth embodiment.
　基地局１０３の制御部２０２は、基地局１０３の基地局識別番号「１０３」が偶数か否かを判定する（ステップＳ７００）。基地局１０３の基地局識別番号「１０３」は奇数のため（ステップＳ７００：Ｎｏ）、基地局１０３の制御部２０２は、移動体識別番号「１１０」が奇数か否かを判定する（ステップＳ７０２）。移動体１１０の移動体識別番号「１１０」は偶数のため（ステップＳ７０２：Ｎｏ）、基地局１０３の制御部２０２は、移動局１０７にアップリンクの無線リソースを割り当てないと判定する（ステップＳ７０４）。すなわち、基地局１０３は、アップリンクの無線リソースの割り当て判定において、アップリンクの無線リソースを割り当てないと判定する（ステップＳ６０３）。 The control unit 202 of the base station 103 determines whether or not the base station identification number "103" of the base station 103 is an even number (step S700). Since the base station identification number "103" of the base station 103 is an odd number (step S700: No), the control unit 202 of the base station 103 determines whether or not the mobile identification number "110" is an odd number (step S702). .. Since the mobile identification number "110" of the mobile 110 is an even number (step S702: No), the control unit 202 of the base station 103 determines that the mobile station 107 is not allocated the uplink radio resource (step S704). .. That is, the base station 103 determines that the uplink radio resource is not allocated in the uplink radio resource allocation determination (step S603).
　図１５に示すシーケンス図に戻って、基地局１０３は、地上通信制御装置１０１へ位置登録要求を転送する（ステップＳ６０４）。位置登録要求を受信した地上通信制御装置１０１は、図１７に示すように、移動体１１０の移動局１０７についての位置登録情報を保持する。図１７は、実施の形態４に係る地上通信制御装置１０１が保持する移動体１１０についての位置登録情報の例を示す図である。地上通信制御装置１０１は、移動体１１０についての位置登録情報として、ネットワークアドレス「１９２．１６８．１０．０」、サブネットマスク「２５５．２５５．２５５．０」、移動体識別番号「１１０」、移動局１０７の移動局識別番号「１０７」、移動局１０７が接続した基地局１０３の基地局識別番号「１０３」などの情報を保持する。地上通信制御装置１０１は、移動体１１０についての位置登録情報を保持すると、基地局１０３へ位置登録応答を返す（ステップＳ６０５）。 Returning to the sequence diagram shown in FIG. 15, the base station 103 transfers the location registration request to the terrestrial communication control device 101 (step S604). As shown in FIG. 17, the ground communication control device 101 that has received the location registration request holds the location registration information about the mobile station 107 of the mobile body 110. FIG. 17 is a diagram showing an example of position registration information about the mobile body 110 held by the terrestrial communication control device 101 according to the fourth embodiment. The terrestrial communication control device 101 has a network address "192.168.10.0", a subnet mask "255.255.255.0", a mobile identification number "110", and movement as location registration information for the mobile 110. It holds information such as the mobile station identification number "107" of the station 107 and the base station identification number "103" of the base station 103 to which the mobile station 107 is connected. When the terrestrial communication control device 101 holds the location registration information about the mobile body 110, the terrestrial communication control device 101 returns a location registration response to the base station 103 (step S605).
　位置登録応答を受信した基地局１０３は、図１８に示すように、移動局１０７についての位置登録情報を保持する。図１８は、実施の形態４に係る基地局１０３が保持する位置登録情報の例を示す図である。基地局１０３は、移動局１０７についての位置登録情報として、ネットワークアドレス「１９２．１６８．１０．０」、サブネットマスク「２５５．２５５．２５５．０」、移動体識別番号「１１０」、移動局１０７の移動局識別番号「１０７」、アップリンク無線リソース割り当て「×」などの情報を保持する。基地局１０３は、移動局１０７についての位置登録情報を保持すると、移動局１０７へ、アップリンクの無線リソースを割り当てないことを示す位置登録応答を通知する（ステップＳ６０６）。 The base station 103 that has received the location registration response holds the location registration information about the mobile station 107, as shown in FIG. FIG. 18 is a diagram showing an example of location registration information held by the base station 103 according to the fourth embodiment. The base station 103 has a network address "192.168.10.0", a subnet mask "255.255.255.0", a mobile identification number "110", and a mobile station 107 as location registration information about the mobile station 107. Holds information such as the mobile station identification number "107" and the uplink radio resource allocation "x". When the base station 103 holds the location registration information about the mobile station 107, the base station 103 notifies the mobile station 107 of a location registration response indicating that the uplink radio resource is not allocated (step S606).
　つぎに、基地局１０２は、基地局識別番号「１０２」を含む報知情報を送信する。移動体１１０の移動局１０６は、基地局１０２から基地局識別番号「１０２」を含む報知情報を受信する（ステップＳ６０７）。基地局１０２から報知情報を受信した移動局１０６は、基地局１０２に位置登録要求を行う（ステップＳ６０８）。位置登録要求には、移動体識別番号「１１０」および移動局識別番号「１０６」の情報が含まれるが、端末１０９が属する移動体１１０のネットワークアドレス「１９２．１６８．１０．０」、サブネットマスク「２５５．２５５．２５５．０」、接続した基地局１０２の基地局識別番号「１０２」などの情報を含んでもよい。基地局１０２では、アンテナ２００および送受信部２０１を経由して、制御部２０２が、移動局１０６からの位置登録要求を受信し、図１６に示すアップリンク無線リソース割り当ての判定を行う。 Next, the base station 102 transmits the broadcast information including the base station identification number "102". The mobile station 106 of the mobile body 110 receives broadcast information including the base station identification number “102” from the base station 102 (step S607). The mobile station 106, which has received the broadcast information from the base station 102, makes a location registration request to the base station 102 (step S608). The location registration request includes information on the mobile identification number "110" and the mobile station identification number "106", but the network address "192.168.10.0" of the mobile 110 to which the terminal 109 belongs and the subnet mask. Information such as "255.255.255.0" and the base station identification number "102" of the connected base station 102 may be included. At the base station 102, the control unit 202 receives the location registration request from the mobile station 106 via the antenna 200 and the transmission / reception unit 201, and determines the uplink radio resource allocation shown in FIG.
　基地局１０２の制御部２０２は、基地局１０２の基地局識別番号「１０２」が偶数か否かを判定する（ステップＳ７００）。基地局１０２の基地局識別番号「１０２」は偶数のため（ステップＳ７００：Ｙｅｓ）、基地局１０２の制御部２０２は、移動体識別番号「１１０」が偶数か否かを判定する（ステップＳ７０１）。移動体１１０の移動体識別番号「１１０」は偶数のため（ステップＳ７０１：Ｙｅｓ）、基地局１０２の制御部２０２は、移動局１０６にアップリンクの無線リソースを割り当てると判定する（ステップＳ７０３）。すなわち、基地局１０２は、アップリンクの無線リソースの割り当て判定において、アップリンクの無線リソースを割り当てると判定する（ステップＳ６０９）。 The control unit 202 of the base station 102 determines whether or not the base station identification number "102" of the base station 102 is an even number (step S700). Since the base station identification number "102" of the base station 102 is an even number (step S700: Yes), the control unit 202 of the base station 102 determines whether or not the mobile identification number "110" is an even number (step S701). .. Since the mobile identification number “110” of the mobile 110 is an even number (step S701: Yes), the control unit 202 of the base station 102 determines that the mobile station 106 is allocated the uplink radio resource (step S703). That is, the base station 102 determines that the uplink radio resource is allocated in the uplink radio resource allocation determination (step S609).
　なお、図１６に示すフローチャートにおいて、基地局１０２の基地局識別番号が偶数（ステップＳ７００：Ｙｅｓ）、かつ、移動体の移動体識別番号が奇数の場合（ステップＳ７０１：Ｎｏ）、制御部２０２は、移動局にアップリンクの無線リソースを割り当てないと判定する（ステップＳ７０４）。また、基地局１０２の基地局識別番号が奇数（ステップＳ７００：Ｎｏ）、かつ、移動体の移動体識別番号が奇数の場合（ステップＳ７０２：Ｙｅｓ）、制御部２０２は、移動局にアップリンクの無線リソースを割り当てると判定する（ステップＳ７０３）。このように、制御部２０２は、移動体識別情報と、基地局識別情報とを用いて、地上通信制御装置１０１への移動局の位置登録を制御する。具体的には、制御部２０２は、移動体識別情報と、基地局識別情報とを用いて、地上通信制御装置１０１への移動局の位置登録の際、移動局に対して移動局から基地局へのアップリンク方向の無線リソースを割り当てるか否かを判定する。 In the flowchart shown in FIG. 16, when the base station identification number of the base station 102 is an even number (step S700: Yes) and the moving body identification number of the moving body is an odd number (step S701: No), the control unit 202 , It is determined that the uplink radio resource is not allocated to the mobile station (step S704). When the base station identification number of the base station 102 is odd (step S700: No) and the mobile identification number of the mobile is odd (step S702: Yes), the control unit 202 uplinks to the mobile station. It is determined that the radio resource is allocated (step S703). In this way, the control unit 202 controls the position registration of the mobile station in the terrestrial communication control device 101 by using the mobile body identification information and the base station identification information. Specifically, the control unit 202 uses the mobile body identification information and the base station identification information to register the position of the mobile station in the terrestrial communication control device 101, from the mobile station to the base station with respect to the mobile station. Determines whether to allocate radio resources in the uplink direction to.
　図１５に示すシーケンス図に戻って、基地局１０２は、地上通信制御装置１０１へ位置登録要求を転送する（ステップＳ６１０）。位置登録要求を受信した地上通信制御装置１０１は、図１７に示すように、移動体１１０の移動局１０６についての位置登録情報を保持する。地上通信制御装置１０１は、移動体１１０についての位置登録情報として、ネットワークアドレス「１９２．１６８．１０．０」、サブネットマスク「２５５．２５５．２５５．０」、移動体識別番号「１１０」、移動局１０６の移動局識別番号「１０６」、移動局１０６が接続した基地局１０２の基地局識別番号「１０２」などの情報を保持する。地上通信制御装置１０１は、移動体１１０についての位置登録情報を保持すると、基地局１０２へ位置登録応答を返す（ステップＳ６１１）。 Returning to the sequence diagram shown in FIG. 15, the base station 102 transfers the location registration request to the terrestrial communication control device 101 (step S610). As shown in FIG. 17, the ground communication control device 101 that has received the location registration request holds the location registration information about the mobile station 106 of the mobile body 110. The terrestrial communication control device 101 has a network address "192.168.10.0", a subnet mask "255.255.255.0", a mobile identification number "110", and movement as location registration information for the mobile 110. It holds information such as the mobile station identification number "106" of the station 106 and the base station identification number "102" of the base station 102 to which the mobile station 106 is connected. When the terrestrial communication control device 101 holds the location registration information about the mobile body 110, the terrestrial communication control device 101 returns a location registration response to the base station 102 (step S611).
　位置登録応答を受信した基地局１０２は、図８に示すように、移動局１０６に関する位置登録情報を保持する。基地局１０２は、移動局１０６についての位置登録情報を保持すると、移動局１０６へ位置登録応答を転送する（ステップＳ６１２）。位置登録応答を受信した移動局１０６は、車上通信制御装置１０８に対して、無線通信が可能となったことを通信状態通知にて通知する（ステップＳ６１３）。通信状態通知を受信した車上通信制御装置１０８は、図９に示すように、移動局１０６の通信が可能となったことを示す通信状態情報を保持する。 As shown in FIG. 8, the base station 102 that has received the location registration response holds the location registration information regarding the mobile station 106. When the base station 102 holds the location registration information about the mobile station 106, the base station 102 transfers the location registration response to the mobile station 106 (step S612). Upon receiving the location registration response, the mobile station 106 notifies the on-board communication control device 108 that wireless communication has become possible by means of a communication status notification (step S613). As shown in FIG. 9, the on-board communication control device 108 that has received the communication status notification holds the communication status information indicating that the mobile station 106 can communicate.
　これにより、通信システム１において、アプリサーバ１００および端末１０９は、地上通信制御装置１０１、基地局１０２、移動局１０６、および車上通信制御装置１０８を経由して、データ送受信を行うことができる。また、通信システム１において、アプリサーバ１００は、地上通信制御装置１０１、基地局１０３、移動局１０７、および車上通信制御装置１０８を経由して、端末１０９に対して、すなわちダウンリンクでデータを送信することができる（ステップＳ６１４）。 Thereby, in the communication system 1, the application server 100 and the terminal 109 can transmit and receive data via the terrestrial communication control device 101, the base station 102, the mobile station 106, and the on-board communication control device 108. Further, in the communication system 1, the application server 100 transmits data to the terminal 109, that is, downlinks, via the ground communication control device 101, the base station 103, the mobile station 107, and the on-board communication control device 108. It can be transmitted (step S614).
　以上説明したように、本実施の形態によれば、基地局１０２，１０３は、移動局から位置登録要求を受信した場合、移動体識別番号および基地局識別番号を用いて、移動局に対してアップリンクの無線リソースの割り当てを行うか否かを判定することとした。この場合においても、実施の形態１から３と同様の効果を得ることができる。 As described above, according to the present embodiment, when the base stations 102 and 103 receive the location registration request from the mobile station, the base stations 102 and 103 use the mobile identification number and the base station identification number to the mobile station. It was decided to determine whether or not to allocate uplink radio resources. Also in this case, the same effect as in the first to third embodiments can be obtained.
　以上の実施の形態に示した構成は、一例を示すものであり、別の公知の技術と組み合わせることも可能であるし、実施の形態同士を組み合わせることも可能であるし、要旨を逸脱しない範囲で、構成の一部を省略、変更することも可能である。 The configuration shown in the above embodiments is an example, and can be combined with another known technique, can be combined with each other, and does not deviate from the gist. It is also possible to omit or change a part of the configuration.
　１　通信システム、１００　アプリサーバ、１０１　地上通信制御装置、１０２，１０３　基地局、１０４，１０５　セル、１０６，１０７　移動局、１０８　車上通信制御装置、１０９　端末、１１０　移動体、２００，３００　アンテナ、２０１，３０１　送受信部、２０２，３０２　制御部、２０３，３０３　有線ネットワークインターフェース部。 1 communication system, 100 application server, 101 terrestrial communication control device, 102, 103 base station, 104, 105 cell, 106, 107 mobile station, 108 on-board communication control device, 109 terminal, 110 mobile body, 200, 300 antenna, 201,301 transmission / reception unit, 202,302 control unit, 203,303 wired network interface unit.

Claims (12)

  1. 　複数の移動局を搭載する移動体と複数の基地局に接続される地上通信制御装置との間で複数の無線通信経路が存在する通信システムにおける前記移動局であって、
    　前記基地局との間でデータ送受信を行う送受信部と、
    　前記移動体の識別情報と、前記移動局の識別情報または前記基地局の識別情報とを用いて、前記地上通信制御装置への前記移動局の位置登録を行うか否かを判定する制御部と、
    　を備えることを特徴とする移動局。     The mobile station in a communication system in which a plurality of wireless communication paths exist between a mobile body equipped with a plurality of mobile stations and a terrestrial communication control device connected to a plurality of base stations.
    A transmission / reception unit that transmits / receives data to / from the base station,
    A control unit that determines whether or not to register the position of the mobile station in the ground communication control device by using the identification information of the mobile body and the identification information of the mobile station or the identification information of the base station. ,
    A mobile station characterized by being equipped with.
  2. 　複数の移動局を搭載する移動体と複数の基地局に接続される地上通信制御装置との間で複数の無線通信経路が存在する通信システムにおける前記基地局であって、
    　前記移動局との間でデータ送受信を行う送受信部と、
    　前記移動体の識別情報と、前記基地局の識別情報とを用いて、前記地上通信制御装置への前記移動局の位置登録を制御する制御部と、
    　を備えることを特徴とする基地局。     The base station in a communication system in which a plurality of wireless communication paths exist between a mobile body equipped with a plurality of mobile stations and a terrestrial communication control device connected to the plurality of base stations.
    A transmitter / receiver that transmits / receives data to / from the mobile station,
    A control unit that controls the position registration of the mobile station in the ground communication control device by using the identification information of the mobile body and the identification information of the base station.
    A base station characterized by being equipped with.
  3. 　前記制御部は、前記移動体の識別情報と、前記基地局の識別情報とを用いて、前記地上通信制御装置への前記移動局の位置登録を行うか否かを判定する、
    　ことを特徴とする請求項２に記載の基地局。     The control unit determines whether or not to register the position of the mobile station in the terrestrial communication control device by using the identification information of the mobile body and the identification information of the base station.
    The base station according to claim 2, wherein the base station is characterized by the above.
  4. 　前記制御部は、前記移動体の識別情報と、前記基地局の識別情報とを用いて、前記地上通信制御装置への前記移動局の位置登録の際、前記移動局に対して前記移動局から前記基地局へのアップリンク方向の無線リソースを割り当てるか否かを判定する、
    　ことを特徴とする請求項２に記載の基地局。     The control unit uses the identification information of the mobile body and the identification information of the base station to register the position of the mobile station in the ground communication control device from the mobile station to the mobile station. Determining whether to allocate uplink radio resources to the base station,
    The base station according to claim 2, wherein the base station is characterized by the above.
  5. 　複数の請求項１に記載の移動局と、
    　複数の基地局と、
    　を備えることを特徴とする通信システム。     A plurality of mobile stations according to claim 1 and
    With multiple base stations
    A communication system characterized by comprising.
  6. 　複数の移動局と、
    　複数の請求項２から４のいずれか１つに記載の基地局と、
    　を備えることを特徴とする通信システム。     With multiple mobile stations
    The base station according to any one of claims 2 to 4, and the base station.
    A communication system characterized by comprising.
  7. 　複数の移動局を搭載する移動体と複数の基地局に接続される地上通信制御装置との間で複数の無線通信経路が存在する通信システムにおける前記移動局を制御するための制御回路であって、
    　前記基地局との間でデータ送受信、
    　前記移動体の識別情報と、前記移動局の識別情報または前記基地局の識別情報とを用いて、前記地上通信制御装置への前記移動局の位置登録を行うか否かを判定、
    　を移動局に実施させることを特徴とする制御回路。     A control circuit for controlling a mobile station in a communication system in which a plurality of wireless communication paths exist between a mobile body equipped with a plurality of mobile stations and a terrestrial communication control device connected to a plurality of base stations. ,
    Sending and receiving data to and from the base station,
    Using the mobile body identification information and the mobile station identification information or the base station identification information, it is determined whether or not to register the position of the mobile station in the ground communication control device.
    A control circuit characterized by having a mobile station carry out the above.
  8. 　複数の移動局を搭載する移動体と複数の基地局に接続される地上通信制御装置との間で複数の無線通信経路が存在する通信システムにおける前記基地局を制御するための制御回路であって、
    　前記移動局との間でデータ送受信、
    　前記移動体の識別情報と、前記基地局の識別情報とを用いて、前記地上通信制御装置への前記移動局の位置登録を制御、
    　を基地局に実施させることを特徴とする制御回路。     A control circuit for controlling a base station in a communication system in which a plurality of wireless communication paths exist between a mobile body equipped with a plurality of mobile stations and a terrestrial communication control device connected to the plurality of base stations. ,
    Sending and receiving data to and from the mobile station,
    Using the identification information of the mobile body and the identification information of the base station, the position registration of the mobile station in the terrestrial communication control device is controlled.
    A control circuit characterized by having a base station carry out the above.
  9. 　複数の移動局を搭載する移動体と複数の基地局に接続される地上通信制御装置との間で複数の無線通信経路が存在する通信システムにおける前記移動局を制御するプログラムを記憶した記憶媒体であって、
    　前記プログラムは、
    　前記基地局との間でデータ送受信、
    　前記移動体の識別情報と、前記移動局の識別情報または前記基地局の識別情報とを用いて、前記地上通信制御装置への前記移動局の位置登録を行うか否かを判定、
    　を移動局に実施させることを特徴とする記憶媒体。     A storage medium that stores a program that controls a mobile station in a communication system in which a plurality of wireless communication paths exist between a mobile body equipped with a plurality of mobile stations and a terrestrial communication control device connected to a plurality of base stations. There,
    The program
    Sending and receiving data to and from the base station,
    Using the mobile body identification information and the mobile station identification information or the base station identification information, it is determined whether or not to register the position of the mobile station in the ground communication control device.
    A storage medium characterized by having a mobile station carry out the above.
  10. 　複数の移動局を搭載する移動体と複数の基地局に接続される地上通信制御装置との間で複数の無線通信経路が存在する通信システムにおける前記基地局を制御するプログラムを記憶した記憶媒体であって、
    　前記プログラムは、
    　前記移動局との間でデータ送受信、
    　前記移動体の識別情報と、前記基地局の識別情報とを用いて、前記地上通信制御装置への前記移動局の位置登録を制御、
    　を基地局に実施させることを特徴とする記憶媒体。     A storage medium that stores a program that controls the base station in a communication system in which a plurality of wireless communication paths exist between a mobile body equipped with a plurality of mobile stations and a terrestrial communication control device connected to the plurality of base stations. There,
    The program
    Sending and receiving data to and from the mobile station,
    Using the identification information of the mobile body and the identification information of the base station, the position registration of the mobile station in the terrestrial communication control device is controlled.
    A storage medium characterized by having a base station carry out the above.
  11. 　複数の移動局を搭載する移動体と複数の基地局に接続される地上通信制御装置との間で複数の無線通信経路が存在する通信システムにおける前記移動局における通信制御方法であって、
    　送受信部が、前記基地局との間でデータ送受信を行うデータ送受信ステップと、
    　制御部が、前記移動体の識別情報と、前記移動局の識別情報または前記基地局の識別情報とを用いて、前記地上通信制御装置への前記移動局の位置登録を行うか否かを判定する制御ステップと、
    　を含むことを特徴とする通信制御方法。     A communication control method for a mobile station in a communication system in which a plurality of wireless communication paths exist between a mobile body equipped with a plurality of mobile stations and a terrestrial communication control device connected to a plurality of base stations.
    A data transmission / reception step in which the transmission / reception unit transmits / receives data to / from the base station,
    The control unit determines whether or not to register the position of the mobile station in the ground communication control device by using the identification information of the mobile body and the identification information of the mobile station or the identification information of the base station. Control steps to do and
    A communication control method comprising.
  12. 　複数の移動局を搭載する移動体と複数の基地局に接続される地上通信制御装置との間で複数の無線通信経路が存在する通信システムにおける前記基地局における通信制御方法であって、
    　送受信部が、前記移動局との間でデータ送受信を行うデータ送受信ステップと、
    　制御部が、前記移動体の識別情報と、前記基地局の識別情報とを用いて、前記地上通信制御装置への前記移動局の位置登録を制御する制御ステップと、
    　を含むことを特徴とする通信制御方法。     A communication control method in a base station in a communication system in which a plurality of wireless communication paths exist between a mobile body equipped with a plurality of mobile stations and a terrestrial communication control device connected to the plurality of base stations.
    A data transmission / reception step in which the transmission / reception unit transmits / receives data to / from the mobile station,
    A control step in which the control unit controls the position registration of the mobile station in the ground communication control device by using the identification information of the mobile body and the identification information of the base station.
    A communication control method comprising.
PCT/JP2020/012721 2020-03-23 2020-03-23 Mobile station, base station, communication system, control circuit, storage medium, and communication control method WO2021191969A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/JP2020/012721 WO2021191969A1 (en) 2020-03-23 2020-03-23 Mobile station, base station, communication system, control circuit, storage medium, and communication control method
JP2020544965A JP6840299B1 (en) 2020-03-23 2020-03-23 Mobile stations, base stations, communication systems, control circuits, storage media and communication control methods

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2020/012721 WO2021191969A1 (en) 2020-03-23 2020-03-23 Mobile station, base station, communication system, control circuit, storage medium, and communication control method

Publications (1)

Publication Number Publication Date
WO2021191969A1 true WO2021191969A1 (en) 2021-09-30

Family

ID=74845348

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2020/012721 WO2021191969A1 (en) 2020-03-23 2020-03-23 Mobile station, base station, communication system, control circuit, storage medium, and communication control method

Country Status (2)

Country Link
JP (1) JP6840299B1 (en)
WO (1) WO2021191969A1 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08317460A (en) * 1995-03-10 1996-11-29 Nec Corp Mobile object communication system including radio equipment provided with registered position information detection function
JP2005085187A (en) * 2003-09-11 2005-03-31 Oki Electric Ind Co Ltd Parking lot management system utilizing radio lan system
JP2008140020A (en) * 2006-11-30 2008-06-19 Toshiba Corp Vehicle monitor system and method

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08317460A (en) * 1995-03-10 1996-11-29 Nec Corp Mobile object communication system including radio equipment provided with registered position information detection function
JP2005085187A (en) * 2003-09-11 2005-03-31 Oki Electric Ind Co Ltd Parking lot management system utilizing radio lan system
JP2008140020A (en) * 2006-11-30 2008-06-19 Toshiba Corp Vehicle monitor system and method

Also Published As

Publication number Publication date
JPWO2021191969A1 (en) 2021-09-30
JP6840299B1 (en) 2021-03-10

Similar Documents

Publication Publication Date Title
EP3637893B1 (en) Method and device for performing device-to-device communication by sharing uplink resource and sidelink resource in wireless communication system
CN113940112B (en) System and method for IAB handover
US10952045B2 (en) Method and device for transmitting relay signal for V2X communication in wireless communication system
EP2247136B1 (en) Determining an operation domain of a base station in a cellular network
US5408683A (en) Method of anticipating a communication unit's location in a networked radio communications system
CN102118812B (en) Switching method, system, relay station, control base station and base station in relay network,
US8761125B2 (en) Scalable wireless mesh networks
JPH08504070A (en) Registration method in cellular radio system
EP2086279A1 (en) Use of alternate communication network to complement an ad-hoc communication network of aircraft
CA3153257A1 (en) System and method of paging in geo satellite-based 5g networks
US20090082057A1 (en) Cognitive radio terminal device and method of communicating using cognitive radio
CN112154680B (en) Multi-antenna mobile device and network device for wireless communication
ES2356467T3 (en) PROCEDURE TO CONFIGURE A TELECOMMUNICATIONS NETWORK, TELECOMMUNICATIONS NETWORK AND CORRESPONDING MANAGEMENT ENTITIES.
EP2469927A1 (en) Mobile communication method and radio base station
EP3253126A1 (en) Method for scheduling transmission resources in a mobile communication system and base station, relay station and user equipment station for the use in the method
US20140128068A1 (en) Mobility concept
WO2021191969A1 (en) Mobile station, base station, communication system, control circuit, storage medium, and communication control method
CN104995941A (en) Multi-frequency electrical tilting antenna management method, device and system
EP1206147A2 (en) Mobile communication system and distributed broadcast information control method in mobile communication system
CN111148281A (en) Retransmission request method, terminal and network side device for Internet of vehicles
JP4822414B2 (en) Packet relay method for terminal in mobile ad hoc network, terminal and program thereof
US20190223233A1 (en) Multi-device communication control system based on epc tunneling and operation method thereof
CN114698043B (en) Communication processing method and device, communication equipment, chip and chip module
US20090290558A1 (en) Bandwidth allocation in ad hoc networks
KR101948076B1 (en) Method and apparatus for logical address assignment

Legal Events

Date Code Title Description
ENP Entry into the national phase

Ref document number: 2020544965

Country of ref document: JP

Kind code of ref document: A

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 20927335

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 20927335

Country of ref document: EP

Kind code of ref document: A1