WO2011070644A1 - Système de communication mobile, appareil de station de base, appareil de station mobile et procédé de commande de puissance d'appareil de station de base - Google Patents

Système de communication mobile, appareil de station de base, appareil de station mobile et procédé de commande de puissance d'appareil de station de base Download PDF

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Publication number
WO2011070644A1
WO2011070644A1 PCT/JP2009/070493 JP2009070493W WO2011070644A1 WO 2011070644 A1 WO2011070644 A1 WO 2011070644A1 JP 2009070493 W JP2009070493 W JP 2009070493W WO 2011070644 A1 WO2011070644 A1 WO 2011070644A1
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WO
WIPO (PCT)
Prior art keywords
base station
station apparatus
mobile station
station device
mobile
Prior art date
Application number
PCT/JP2009/070493
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English (en)
Japanese (ja)
Inventor
礼子 服部
武 功刀
昇 長谷川
忠 山田
Original Assignee
富士通株式会社
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Priority to PCT/JP2009/070493 priority Critical patent/WO2011070644A1/fr
Publication of WO2011070644A1 publication Critical patent/WO2011070644A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0203—Power saving arrangements in the radio access network or backbone network of wireless communication networks
    • H04W52/0206—Power saving arrangements in the radio access network or backbone network of wireless communication networks in access points, e.g. base stations
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
    • H04W52/0235—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal where the received signal is a power saving command
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0261—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present invention relates to a mobile communication system, a base station apparatus, a mobile station apparatus, and a power control method for the base station apparatus.
  • a base station apparatus having a narrow communication area with a radius of about several tens of meters is connected to a mobile station apparatus registered in advance. Services that allow only connections are being considered.
  • a base station apparatus that provides such a service is hereinafter referred to as a home base station apparatus.
  • the home base station apparatus periodically outputs radio waves for notifying broadcast information and the like even if the registered specific mobile station apparatus does not exist in the communicable area of the own base station apparatus. For this reason, the home base station apparatus consumes useless power.
  • broadcast information from the home base station apparatus is notified through a “perch channel” registered in advance in the mobile station apparatus as a frequency to be accessed first when the mobile station apparatus is powered on. Therefore, if the home base station device periodically outputs radio waves, a mobile station device that is not registered in the home base station device accesses the home base station device, and the mobile station device and the home base station There is a high possibility that extra communication will occur between devices.
  • the radio wave transmitted from the home base station apparatus may cause interference with the radio wave transmitted from another base station apparatus having a communicable area that overlaps the communicable area of the home base station apparatus. In particular, if a plurality of home base station apparatuses are densely arranged, there is a high possibility that radio wave interference will occur. Therefore, it is desirable that unused home base station apparatuses do not transmit radio waves.
  • the base station apparatus stops transmission of control information when the mobile station apparatus is not located at all.
  • the mobile station device transmits a transmission request signal for requesting the base station device to start transmission of control information when it wishes to be in the service area.
  • the base station apparatus starts transmission of control information by receiving this transmission request signal, and stops transmission of control information when the mobile station apparatus is not located in the base station apparatus.
  • the home base station apparatus cannot know in advance the timing for receiving the transmission request signal from the mobile station apparatus, and therefore must always be in a reception standby state. Therefore, in the prior art, it is necessary to always supply power to a circuit for receiving a radio signal from a mobile station apparatus and processing the received signal, which is included in the home base station apparatus. As described above, the home base station apparatus according to the related art cannot sufficiently suppress the power consumption.
  • the present specification describes a mobile communication system, a base station apparatus, a mobile station apparatus, and a base that can suppress power consumption of the base station apparatus when a communicable mobile station apparatus does not exist in the communicable area of the base station apparatus.
  • An object of the present invention is to provide a power control method for a station apparatus.
  • a mobile communication system includes a first base station apparatus, at least one second base station apparatus, and a mobile station apparatus that can be wirelessly connected to the first base station apparatus or the second base station apparatus.
  • the mobile station apparatus moves from within a predetermined range including the communicable area of the first base station apparatus to outside the predetermined range, the mobile station apparatus out of at least one second base station apparatus Transmits a stop request signal to the base station apparatus that sets the cell in which the current location is located.
  • the second base station apparatus that has received the stop request signal transfers the stop request signal to the first base station apparatus.
  • the 1st base station apparatus will stop the electric power supply to at least one part of the radio
  • a base station apparatus receives a wireless processing unit that processes a wireless signal, a power source that supplies power to the wireless processing unit, and a stop request signal transmitted from the mobile station device via another base station device, A power management unit configured to stop power supply to at least a part of the wireless processing unit;
  • a mobile station apparatus stores a storage unit that stores information representing a predetermined range including a communicable area of the first base station device, and when the mobile device moves from a predetermined range to a predetermined range.
  • a radio signal processing unit that transmits a stop request signal to a second base station device that sets a cell in which the device itself is currently located.
  • a first base station apparatus at least one second base station apparatus, a mobile station apparatus that can be wirelessly connected to the first base station apparatus or the second base station apparatus,
  • a power control method for a base station apparatus in a mobile communication system having In this power control method, the mobile station apparatus moves at least one second base station apparatus when the mobile station apparatus moves out of the predetermined range including the communicable area of the first base station apparatus.
  • a stop request signal is transmitted to the base station apparatus that sets the cell in which the mobile station apparatus is currently located.
  • the second base station apparatus that has received the stop request signal transfers the stop request signal to the first base station apparatus.
  • the 1st base station apparatus will stop the electric power supply to at least one part of the radio
  • the mobile communication system, the base station apparatus, the mobile station apparatus, and the power control method for the base station apparatus disclosed in the present specification when a mobile station apparatus capable of communication does not exist within the communicable area of the base station apparatus, The power consumption of the base station device can be suppressed.
  • FIG. 1 is a schematic configuration diagram of a mobile communication system according to one embodiment.
  • FIG. 2 is an operation sequence diagram of the transition processing to the sleep mode of the home base station apparatus in the mobile communication system according to the present embodiment.
  • FIG. 3 is a diagram illustrating an example of a neighboring cell information registration table.
  • FIG. 4 is an operation sequence diagram of the transition process to the active mode of the home base station apparatus in the mobile communication system according to the present embodiment.
  • FIG. 5 is a diagram illustrating an example of a registered mobile station list.
  • FIG. 6 is a schematic configuration diagram of a home base station apparatus.
  • FIG. 7 is a schematic configuration diagram of the mobile station apparatus.
  • FIG. 8 is an operation sequence diagram of the transition process to the sleep mode of the home base station apparatus in the mobile communication system according to another embodiment.
  • a mobile station apparatus that has moved out of a predetermined range around a home base station apparatus that permits connection only to a mobile station apparatus that has been registered in advance is connected to the home base station via another base station apparatus.
  • a stop request signal for stopping transmission / reception of a radio signal is transmitted to the apparatus.
  • the mobile station apparatus transmits an activation request signal for starting transmission / reception of a radio signal to the home base station apparatus via another base station apparatus.
  • the home base station device when there is no registered mobile station device that exists in the communicable area of the home base station device, the home base station device not only supplies power to the circuit that performs transmission processing of the radio signal, but also Stops power supply to the circuit that performs the reception process.
  • This mobile communication system is compliant with Long Term Evolution (LTE), a communication standard being standardized by the Third Generation Partnership Project (3GPP). To do.
  • LTE Long Term Evolution
  • 3GPP Third Generation Partnership Project
  • the mobile communication system may conform to a communication scheme other than LTE, for example, International Telecommunication Union (IMT) -2000.
  • IMT International Telecommunication Union
  • FIG. 1 is a schematic configuration diagram of a mobile communication system according to one embodiment.
  • the mobile communication system 1 includes a home base station device 2, four base station devices 3-1 to 3-4, an upper node device 4, and a mobile station device 5.
  • the home base station device 2 and each of the base station devices 3-1 to 3-4 are connected to the upper node device 4 via a communication network.
  • the home base station apparatus 2 and the base station apparatuses 3-1 to 3-4 can directly communicate with each other.
  • the mobile communication system 1 includes one home base station device and four base station devices.
  • the number of home base station devices and the number of base station devices included in the mobile communication system 1 are not limited to one and four, respectively. Further, the number of mobile station devices included in the mobile communication system 1 is not limited to one.
  • the home base station device 2 and the base station devices 3-1 to 3-4 are devices that relay communication between the mobile station device 5 and the upper node device 4.
  • Each of the home base station apparatus 2 and the base station apparatuses 3-1 to 3-4 corresponds to an Evolved Universal Terrestrial Radio Access Network (E-UTRAN) NodeB (eNB) in LTE.
  • the home base station apparatus 2 has a communicable area 2a having a radius of about 10 m, for example. Then, the home base station device 2 permits connection only to the registered mobile station device corresponding to the identification information of the mobile station device stored in the storage unit of the own device.
  • the home base station device 2 when the home base station device 2 receives, for example, a location registration request command or a call setting command from the mobile station device 5, the home base station device 2 uses the identification information of the mobile station device 5 included in those commands. It compares with the identification information of the 1 or more registered mobile station apparatus memorize
  • the home base station apparatus 2 transmits a radio signal when a mobile station apparatus that is permitted to connect to the own base station and is turned on does not exist in and around the communicable area 2a of the home base station apparatus 2.
  • the sleep mode is set to stop the processing and the reception processing.
  • the mobile base station apparatus 2 that is permitted to connect to the home base station apparatus 2 and is powered on exists in or around the communicable area 2a of the home base station apparatus 2, the home base station apparatus 2 It becomes an active mode for performing transmission processing and reception processing.
  • each of the base station apparatuses 3-1 to 3-4 has a communicable area with a radius of several hundreds m to several tens km, for example. Then, the base station apparatus 3-1 sets three cells 3-1a to 3-1c within the communicable area of the own apparatus. Similarly, each of the base station devices 3-2 to 3-4 has three cells 3-2a to 3-2c, 3-3a to 3-3c, and 3-4a to 3 in its own communicable area. -4c is set. The communicable area 2a of the home base station device 2 is included in the cell 3-1a set by the base station device 3-1, among these cells.
  • the upper node apparatus 4 is an apparatus that relays communication between the mobile station apparatus 5 and the core network.
  • the upper node device 4 is, for example, a device having a serving gateway (S-GW) function and a mobility management entity (MME) function in LTE.
  • S-GW serving gateway
  • MME mobility management entity
  • the upper node apparatus 4 may separately include an apparatus having an S-GW function and an apparatus having an MME function.
  • the upper node apparatus 4 may include an apparatus having an Element Manager System (EMS) function for managing information such as the position of each base station apparatus and the setting area of each cell.
  • EMS Element Manager System
  • the mobile station device 5 is a terminal that can communicate with other mobile station devices via the home base station device 2 or the base station devices 3-1 to 3-4, such as a mobile phone.
  • the identification information of the mobile station device 5 is stored in advance in the storage unit of the home base station device 2, and the mobile station device 5 can be wirelessly connected to the home base station device 2.
  • the identification information used for determining whether or not the home base station apparatus 2 permits connection to the mobile station apparatus is, for example, the telephone number of the mobile station apparatus 5 or the owner of the mobile station apparatus 5. It can be the identification number, or the telephone number of the owner's home or the identification number of the organization to which the owner belongs.
  • the mobile station device 5 When the mobile station device 5 enters either the communicable area 2a of the home base station device 2 or the cell set by the base station devices 3-1 to 3-4, the mobile station device 5 Wireless communication is possible with the base station apparatus that sets the cell. Then, when the mobile station device 5 is wirelessly connected to the base station device capable of wireless communication, the uplink signal transmitted from the mobile station device 5 is sent to the upper node device 4 via the base station device.
  • the upper node apparatus 4 routes the received uplink signal, and transmits it to, for example, another upper node apparatus (not shown) via the core network.
  • the upper node apparatus 4 transmits a downlink signal received from another upper node apparatus via the core network to the mobile station apparatus 5 via the base station apparatus wirelessly connected to the mobile station apparatus 5.
  • the home base station device 2 When the mobile station device 5 is not located in any of the communicable area 2a of the home base station device 2 and a predetermined cell around the communicable area 2a, the home base station device 2 suppresses power consumption. The power supply to the circuit that performs radio wave transmission processing and reception processing is stopped. Therefore, the mobile communication system 1 determines whether or not to shift the home base station apparatus 2 to the sleep mode based on the position of the mobile station apparatus 5.
  • FIG. 2 is an operation sequence diagram of the transition process to the sleep mode of the home base station apparatus 2 in the mobile communication system 1.
  • the mobile station apparatus 5 When the mobile station apparatus 5 is activated in the communicable area 2a of the home base station apparatus 2 or has moved from another cell to the communicable area 2a, the mobile station apparatus 5 sends a location registration request command to the home base station apparatus 2. Transmit (step S101). Then, the mobile station device 5, the home base station device 2, and the upper node device 4 execute a location registration process (step S102). At that time, the mobile station device 5 receives broadcast information (System Information) transmitted from the home base station device 2 through a broadcast channel (Broadcast Control Channel, BCCH).
  • BCCH Broadcast Control Channel
  • the mobile station apparatus 5 memorize
  • the home base station device 2 does not perform the location registration process. And the stop process of the home base station apparatus 2 is complete
  • the home base station device 2 determines whether or not radio waves from other base station devices can be received (step S103). For example, when the home base station apparatus 2 can reproduce a signal transmitted from another base station apparatus and transmitted through a synchronization channel or broadcast information transmitted through a broadcast channel, the home base station apparatus 2 receives radio waves from the other base station apparatus. Judge that it is possible. When the home base station apparatus 2 cannot receive radio waves from other base station apparatuses (step S103—No), the home base station apparatus 2 does not transmit a neighboring cell information table described later to the mobile station apparatus 5. Then, the transition process of the home base station device 2 to the sleep mode is completed. Thereby, the possibility that the mobile station apparatus 5 cannot be wirelessly connected to any base station apparatus is reduced.
  • the home base station apparatus 2 transmits a neighboring cell information table to the mobile station apparatus 5 (step S104).
  • This neighboring cell information table represents an area where the home base station apparatus 2 is maintained in the active mode due to the presence of the mobile station apparatus 5.
  • the home base station apparatus 2 includes the neighboring cell information table in the system information block type 1 (System Information Block (SIB) type 1) in which area information and the like are included in the broadcast information, and transmits the broadcast information. To do.
  • SIB System Information Block
  • FIG. 3 is a diagram showing an example of the neighboring cell information table.
  • the neighboring cell information table 300 includes identification information of cells in which the home base station apparatus 2 is maintained in the active mode.
  • the peripheral cell information table 300 includes identification information of the cells 3-1a, 3-1b, 3-1c, 3-2a, 3-2b, 3-3a, and 3-4b, respectively. In this case, if the mobile station apparatus 5 exists in the area 101 surrounded by the thick line in FIG. 1 including these cells, the home base station apparatus 2 is kept in the active mode.
  • the mobile station device 5 when receiving the neighboring cell information table, stores the neighboring cell information table in its own storage unit. Then, the mobile station device 5 turns on the monitoring mode for performing switching control of the home base station device 2 between the sleep mode and the active mode (step S105).
  • the mobile station device 5 determines whether or not the cell that has been in the area has moved to another cell (step S106).
  • the mobile station device 5 stores, for example, the area information included in the notification information from the base station device that has transmitted the best received radio wave among the received radio waves in the storage unit thereof. If it is different from the area information of the serving cell, it is determined that the cell moves to another cell.
  • step S106—No the mobile station device 5 repeats the process of step S106.
  • the mobile station apparatus 5 determines whether or not the location registration information needs to be changed (step S107).
  • the mobile station device 5 transmits a location registration request command to the base station device that has set the cell where the current location is set (step S108). Then, the mobile station device 5, the base station device and the upper node device 4 that have received the location registration request command execute location registration processing (step S109). And the mobile station apparatus 5 memorize
  • step S109 After step S109 or when there is no need to change the location registration information in step S107 (step S107-No), the mobile station apparatus 5 determines whether or not the currently located cell is registered in the neighboring cell information table. (Step S110). When the currently located cell is registered in the neighboring cell information table (step S110—Yes), the mobile station apparatus 5 repeats the processing from step S106 to step S110. On the other hand, when the cell currently located is not registered in the neighboring cell information table (step S110-No), the mobile station device 5 is not in the vicinity of the communicable area 2a of the home base station device 2.
  • the mobile station apparatus 5 transmits a stop request command for requesting the home base station apparatus 2 to enter the sleep mode to the base station apparatus that has set the cell where it is currently located, for example, via the shared control channel (step S111).
  • the stop request command includes the identification information of the home base station apparatus 2 to be shifted to the sleep mode, the identification information of the mobile station apparatus 5 that has transmitted the stop request command, and the identification information of the command indicating the stop request command. It is.
  • the base station apparatus that has received the stop request command specifies the transfer destination of the stop request command by referring to the identification information of the home base station apparatus 2 included in the stop request command. Then, the base station apparatus that has received the stop request command transfers the stop request command to the home base station apparatus 2 according to the protocol of the X2 interface, for example (step S112).
  • the home base station apparatus 5 refers to the identification information of the mobile station apparatus 5 that is the transmission source of the stop request command, and is included in the stop request command. Is registered (step S113).
  • the home base station device 2 shifts to the sleep mode (step S114).
  • the home base station apparatus 2 not only stops transmission of radio signals, but also stops reception of radio signals, and stops power supply to circuits that perform radio signal transmission processing and reception processing.
  • the mobile station device 5 is not registered in the home base station device 2 (step S113—No)
  • the home base station device 2 does not enter the sleep mode.
  • each device of the mobile communication system 1 performs the process of shifting the home base station device 2 to the sleep mode. finish.
  • the above operation will be described with an example. Referring to FIG. 1 again, for example, it is assumed that the mobile station device 5 is first at a point A in the communicable area 2a of the home base station device 2. Then, it is assumed that the mobile station device 5 has moved in the order of point A ⁇ point B ⁇ point C ⁇ point D. The points B, C, and D are located in the cells 3-3a, 3-4b, and 3-4a, respectively.
  • the neighboring cell information table for the home base station apparatus 2 includes cells 3-1a, 3-1b, 3-1c, 3-2a, 3-2b, 3-3a, and 3-4b in the area 101. Suppose that
  • the location registration is performed with respect to the home base station device 2 and the neighboring cell information table is received from the home base station device 2. . Thereafter, when the mobile station device 5 moves from the point A to the point B, the mobile station device 5 requests the base station device 3-1 that sets the cell 3-1a to execute the location registration process. However, since the cell 3-1a is included in the neighboring cell information table, the mobile station device 5 does not transmit a stop request command. Next, when the mobile station device 5 moves from the point B to the point C, the mobile station device 5 executes the location registration process as necessary for the base station device 3-4 that sets the cell 3-4b. Request.
  • the mobile station device 5 Since the cell 3-4b is also included in the neighboring cell information table, the mobile station device 5 does not transmit a stop request command. Thereafter, when the mobile station device 5 moves from the point C to the point D, the mobile station device 5 requests the base station device 3-4 that sets the cell 3-4a to execute the location registration process as necessary. To do. Here, the cell 3-4a is not included in the neighboring cell information table. Therefore, the mobile station device 5 transmits a stop request command to the base station device 3-4. Then, the base station apparatus 3-4 transfers the stop request command to the home base station apparatus 2. And the home base station apparatus 2 transfers to sleep mode.
  • a direct stop request command may be transmitted to the station apparatus 2. Further, when an operation for turning off the power of the mobile station device 5 is performed while the mobile station device 5 is located in a cell included in the neighboring cell information table, the mobile station device 5 is located. A stop request command may be transmitted to the home base station apparatus 2 via the base station apparatus that manages the cell being managed.
  • FIG. 4 is an operation sequence diagram of the transition process of the home base station apparatus 2 to the active mode in the mobile communication system 1. It is assumed that the monitoring mode of the mobile station device 5 is set to ON at the start of this operation.
  • the mobile station device 5 determines whether or not the cell that has been in the area has moved to another cell (step S201). When the mobile station device 5 has not moved to another cell (step S201—No), the mobile station device 5 repeats the process of step S201.
  • the mobile station apparatus 5 determines whether or not the location registration information needs to be changed (step S202). If the location registration information needs to be changed (step S202—Yes), the mobile station device 5 transmits a location registration request command to the base station device that has set the cell where the current location is set (step S203). Then, the mobile station device 5, the base station device and the upper node device 4 that have received the location registration request command execute location registration processing (step S204). And the mobile station apparatus 5 memorize
  • step S204 the mobile station device 5 determines whether the currently located cell is registered in the neighboring cell information table.
  • Step S205 the mobile station apparatus 5 repeats the processing of step S201 to step S205. Note that even when the mobile station device 5 does not have a neighboring cell information table, the mobile station device 5 may determine that the currently located cell is not registered in the neighboring cell information table. On the other hand, when the cell currently located is registered in the neighboring cell information table (step S205—Yes), the mobile station device 5 is located around the communicable area 2a of the home base station device 2.
  • the mobile station device 5 transmits, for example, a start request command for requesting the home base station device 2 to shift to the active mode to the base station device that has set the cell in which it is currently located through the shared control channel (Ste S206).
  • the activation request command includes identification information of the home base station apparatus to be shifted to the active mode, identification information of the mobile station apparatus that has transmitted the activation request command, and identification information of a command indicating that it is an activation request command.
  • the mobile station device 5 turns off the monitoring mode (step S207).
  • the base station apparatus that has received the activation request command identifies the transfer destination of the activation request command by referring to the identification information of the home base station apparatus 2 included in the activation request command. Then, the base station apparatus that has received the activation request command transfers the activation request command to the home base station apparatus 2 in accordance with, for example, the protocol of the X2 interface (step S208).
  • the home base station apparatus 5 When the home base station apparatus 2 receives the activation request command, the home base station apparatus 5 refers to the identification information of the mobile station apparatus 5 that is the transmission source of the activation request command, and is included in the activation request command. Is registered (step S209). When the mobile station device 5 is registered in the home base station device 2 (step S209—Yes), the home base station device 2 shifts to the active mode (step S210). Then, the home base station apparatus 2 restarts the power supply to the circuit that performs the transmission process and the reception process of the radio signal, and starts the transmission and reception of the radio signal.
  • step S209—No when the mobile station device 5 is not registered in the home base station device 2 (step S209—No), the home base station device 2 does not shift to the active mode and maintains the sleep mode.
  • step S210 or when the mobile station device 5 is not registered in the home base station device 2 in step S209 each device of the mobile communication system 1 finishes the transition process of the home base station device to the active mode. To do.
  • the above operation will be described with an example. Referring to FIG. 1 again, for example, it is assumed that the mobile station apparatus 5 has moved in the order of point D ⁇ point E ⁇ point F ⁇ point A.
  • the point D is located in the cell 3-4a.
  • Points E and F are located in the cells 3-4c and 3-2a, respectively.
  • the point A is located in the communicable area 2 a of the home base station device 2.
  • the neighboring cell information table for the home base station apparatus 2 includes cells 3-1a, 3-1b, 3-1c, 3-2a, 3-2b, 3-3a, and 3-4b in the area 101.
  • the mobile station apparatus 5 when the mobile station apparatus 5 moves from the point D to the point E, the mobile station apparatus 5 requests the base station apparatus 3-4 to execute a location registration process as necessary. However, since the cell 3-4c including the point E is not included in the neighboring cell information table, the mobile station device 5 does not transmit the activation request command. Next, when the mobile station device 5 moves from the point E to the point F, the mobile station device 5 executes the location registration process as necessary for the base station device 3-2 that sets the cell 3-2a. Request. The cell 3-2a is included in the neighboring cell information table. Therefore, the mobile station device 5 transmits an activation request command to the base station device 3-2. Then, the base station apparatus 3-2 transfers the activation request command to the home base station apparatus 2.
  • the home base station apparatus 2 transfers to active mode. Thereafter, when the mobile station device 5 moves from the point F to the point A, the mobile station device 5 requests the home base station device 2 to execute a location registration process. Then, the mobile station device 5 can wirelessly communicate with other terminals through the home base station device 2.
  • the mobile station device 5 may transmit an activation request command to the home base station device 2 via the base station device that manages the cell in which the mobile station device is located.
  • the mobile station device 5 when the mobile station device 5 is located in the communicable area 2a of the home base station device 2, after the home base station device 2 shifts to the active mode, the other base station device transfers to the home base station device 2. Handover is executed.
  • the home base station apparatus 2 shifts to the sleep mode when a stop request is made from all the mobile station apparatuses. On the other hand, if any one of the registered mobile station apparatuses is not requested to stop, the home base station apparatus 2 does not shift to the sleep mode. Further, when the home base station device 2 is already in the sleep mode, the home base station device 2 shifts to the active mode when receiving the activation request command from any one of the registered mobile station devices.
  • the home base station device 2 stores, for each registered mobile station device, a list of mobile station devices registered in its own storage unit in order to record whether or not a stop request has been made.
  • FIG. 5 is a diagram illustrating an example of a registered mobile station list.
  • the registered mobile station list 500 includes information on one mobile station device in each row.
  • the left column of the registered mobile station list 500 shows identification information of registered mobile station devices, and the right column shows a status flag indicating whether or not a stop request has been made.
  • the status flag is rewritten to a value (for example, “ON”) indicating that a stop request has been made.
  • the status flag is rewritten to a value (for example, “OFF”) indicating that a stop request is not made.
  • the home base station apparatus 2 acquires information on base station apparatuses installed around the home base station apparatus 2 from the upper node apparatus 4 in order to create a neighboring cell information table.
  • the device corresponding to the EMS is configured such that each time a new base station device is installed, the identification information of the newly installed base station device, the installation position, and the base station device Collect information about the corresponding area of the cell set by.
  • the upper node apparatus 4 registers in the neighboring cell information table based on the size of the communicable area set for the home base station apparatus 2, for example, the radius of the communicable area centered on the home base station apparatus 2. Select the cell to be used.
  • the radius of the communicable area of the home base station apparatus 2 is determined based on, for example, a contract between the user of the home base station apparatus 2 and a company that operates the mobile communication system 1. It is stored in the upper node device 4 at the time of installation.
  • the upper node apparatus 4 specifies a cell including the communicable area of the home base station apparatus 2 and a cell adjacent to the cell based on the installation position of the home base station apparatus 2 and information of each cell.
  • the upper node apparatus 4 may select all the cells that overlap the area having a predetermined radius with the home base station apparatus 2 as the center.
  • the predetermined radius is an estimated value of the time required for the transition from the sleep mode to the active mode until the mobile station device 5 reaches the communicable area of the home base station device 2 after transmitting the activation request command. Is set to be shorter.
  • the upper node apparatus 4 transmits the identification information of those cells to the home base station apparatus 2.
  • the upper node apparatus 4 may update the information on the cell registered in the neighboring cell information table of the home base station apparatus 2 even when the cell setting is changed for the existing base station apparatus.
  • the home base station apparatus 2 may periodically collect information on cell settings from base station apparatuses installed in the vicinity, and create a neighboring cell information table based on the information. In this case, if the home base station apparatus 2 has previously stored identification information of base station apparatuses installed in its vicinity, the home base station apparatus 2 sends information related to cell settings to the base station apparatus corresponding to the stored identification information. Request to send. Then, the base station apparatus that has received the request returns to the home base station apparatus 2 the identification information of the cell set by itself and information indicating the range in which the cell is set.
  • the home base station apparatus 2 moves to the upper node apparatus 4 corresponding to EMS or MME in the vicinity of the home base station apparatus 2. Queries the identification information of the installed base station apparatus.
  • the upper node apparatus 4 returns identification information of base station apparatuses installed around the home base station apparatus 2 to the home base station apparatus 2. Thereafter, the home base station apparatus 2 requests the base station apparatus corresponding to the identification information notified from the upper node apparatus 4 to send information related to the cell setting, as described above.
  • the home base station apparatus 2 creates a neighboring cell information table based on the cell setting information received from the neighboring base station apparatuses.
  • the home base station apparatus 2 selects a cell including the communicable area of the home base station apparatus 2 and a cell adjacent to the cell.
  • the home base station apparatus 2 may select all cells that are centered on the home base station apparatus 2 and overlap with an area having a predetermined radius. Then, the home base station apparatus 2 includes the identification information of the selected cell in the neighboring cell information table.
  • FIG. 6 is a schematic configuration diagram of the home base station apparatus 2.
  • the home base station apparatus 2 includes a radio signal processing unit 21, an antenna 22, an interface unit 23, a storage unit 24, a baseband processing unit 25, a timing processing unit 26, a power supply unit 27, a control unit 28,
  • the radio signal processing unit 21, the baseband processing unit 25, the timing processing unit 26, and the control unit 28 correspond to a radio processing unit that processes radio signals.
  • the wireless signal processing unit 21, the interface unit 23, the storage unit 24, the baseband processing unit 25, the timing processing unit 26, and the control unit 28 are formed as separate circuits. Alternatively, each of these units may be mounted on the home base station apparatus 2 as one integrated circuit in which circuits corresponding to the respective units are integrated.
  • the radio signal processing unit 21 transmits a radio signal to the mobile station device 5 and receives a radio signal from the mobile station device 5 in order to perform radio communication with the mobile station device 5.
  • the radio signal processing unit 21 includes a transmission processing unit 211 and a reception processing unit 212.
  • the transmission processing unit 211 of the radio signal processing unit 21 multiplexes various control signals and encoded downlink signals received from the baseband processing unit 25 according to a predetermined multiplexing method, and according to a predetermined multiplexing method. Modulate.
  • the predetermined multiplexing scheme can be, for example, an orthogonal frequency-division multiplexing scheme (OFDM).
  • the transmission processing unit 211 superimposes the multiplexed downlink signal and control signal on a carrier wave having a radio frequency. Then, the transmission processing unit 211 amplifies the downlink signal and the control signal superimposed on the carrier wave to a desired level by a high power amplifier (not shown), and sends the signal to the antenna 22 via a duplexer (not shown). introduce.
  • the reception processing unit 212 of the wireless signal processing unit 21 amplifies the uplink signal and the control signal received from the antenna 22 via the duplexer by a low noise amplifier (not shown).
  • the reception processing unit 212 converts the frequency of the uplink signal and the control signal from a radio frequency to a baseband frequency by multiplying the amplified uplink signal and the control signal by a periodic signal having an intermediate frequency. Then, the reception processing unit 212 separates and demodulates the uplink signal and the control signal according to a predetermined multiplexing method.
  • the reception processing unit 212 outputs the separated uplink signal and control signal to the baseband processing unit 25.
  • the multiplexing method for the uplink signal can be, for example, a single carrier frequency division multiplexing (Single-Carrier-Frequency-Division-Multiplexing, SC-FDMA).
  • the antenna 22 radiates a downlink signal or a control signal transmitted from the radio signal processing unit 21.
  • the antenna 22 receives an uplink signal or various control signals transmitted from the mobile station apparatus 5 and transmits the uplink signal or control signal to the radio signal processing unit 21.
  • the interface unit 23 has a communication interface circuit for connecting the home base station apparatus 2 to another base station apparatus or the upper node apparatus 4.
  • the interface unit 23 processes a signal transmitted to the upper node device 4 or a signal received from the upper node device 4 in accordance with a communication protocol between the base station device and the upper node device, such as an S1 interface.
  • the interface unit 23 processes a signal transmitted to another base station apparatus or a signal received from another base station apparatus in accordance with a communication protocol between the base station apparatuses, such as an X2 interface.
  • the interface unit 23 receives a downlink signal or a control signal from the upper node device 4 or another base station device, and outputs the downlink signal or the control signal to the baseband processing unit 25 or the control unit 28.
  • the interface unit 23 receives an uplink signal or a control signal from the baseband processing unit 25 or the control unit 28, and outputs the uplink signal or the control signal to the upper node apparatus 4 or another base station apparatus.
  • the interface unit 23 functions as a power management unit that sets the home base station apparatus 2 to the active mode or the sleep mode and controls the power unit 27 according to the set mode.
  • the identification information of the source mobile station device included in the stop request command is any one of the identification information indicated in the registered mobile station list stored in the storage unit 24. It is determined whether or not it matches.
  • the interface unit 23 makes a stop request for the status flag corresponding to the mobile station apparatus.
  • the interface unit 23 sets the home base station device 2 to the sleep mode. To do. The interface unit 23 notifies the power supply unit 27 that the sleep mode has been set.
  • the identification information of the transmission source mobile station device included in the activation request command is one of the identifications indicated in the registered mobile station list stored in the storage unit 24. It is determined whether or not it matches the information.
  • the identification information of the transmission source mobile station apparatus matches any identification information shown in the registered mobile station list, the status flag corresponding to the mobile station apparatus is a value indicating that an activation request has been made. Rewrite to Then, the interface unit 23 sets the home base station device 2 to the active mode. The interface unit 23 notifies the power supply unit 27 that the active mode has been set.
  • the storage unit 24 includes, for example, a rewritable nonvolatile semiconductor memory. And the memory
  • the storage unit 24 temporarily stores an uplink signal or a downlink signal. Further, the storage unit 24 stores a peripheral cell information table. Further, the storage unit 24 stores the identification information of the registered mobile station device as, for example, a registered mobile station list shown in FIG.
  • the baseband processing unit 25 includes, for example, one or a plurality of processors and their peripheral circuits.
  • the baseband processing unit 25 has functions of radio resource control (Radio Resource Control, RRC) and radio resource management (Radio Resource Management, RRM). Then, the baseband processing unit 25 performs the home base station apparatus 2 and the mobile station apparatus such as a call control process and a handover process for the mobile station apparatus 5 that has entered the communicable area 2a of the home base station apparatus 2 according to a predetermined call control protocol. 5 is executed for wirelessly connecting to.
  • RRC Radio Resource Control
  • RRM Radio Resource Management
  • the baseband processing unit 25 may also have functions such as radio link control (Radio Link Control, RLC), media access control (Media Access Control, MAC), Packet Data Convergence Protocol (PDCP), and the like. Then, the baseband processing unit 25 may execute processes such as retransmission control of transmission / reception signals to the mobile station apparatus 5, order alignment, header compression, and the like.
  • RLC Radio Link Control
  • MAC Media Access Control
  • PDCP Packet Data Convergence Protocol
  • processes such as retransmission control of transmission / reception signals to the mobile station apparatus 5, order alignment, header compression, and the like.
  • the baseband processing unit 25 executes transmission processing such as error correction coding processing on the downlink signal transmitted from the interface unit 23 and transmitted to the mobile station apparatus 5. Then, the baseband processing unit 25 outputs the encoded downlink signal to the radio signal processing unit 21. The baseband processing unit 25 receives the uplink signal received from the mobile station apparatus 5 and demodulated by the radio signal processing unit 21, and performs reception processing such as error correction decoding processing on the signal. Then, the baseband processing unit 25 outputs the decoded uplink signal to the interface unit 23.
  • Timing processor 26 has a clock generator and generates a reference clock signal. Then, the timing processing unit 26 performs a synchronization process using the reference clock signal. In order to execute the synchronization processing, the timing processing unit 26 may execute a function of executing processing according to a protocol such as a network time protocol (Network Time Protocol, NTP) or Precision Time Protocol (PTP). . Alternatively, the timing processing unit 26 may perform synchronization processing using a GPS signal received from the global positioning system (GPS) satellite via the antenna 22.
  • a protocol such as a network Time Protocol, NTP) or Precision Time Protocol (PTP).
  • NTP Network Time Protocol
  • PTP Precision Time Protocol
  • the timing processing unit 26 may perform synchronization processing using a GPS signal received from the global positioning system (GPS) satellite via the antenna 22.
  • GPS global positioning system
  • the power supply unit 27 supplies power to each unit of the home base station apparatus 2. However, when the power supply unit 27 is notified from the interface unit 23 that the home base station apparatus 2 has been set to the sleep mode, each unit corresponding to the radio processing unit, for example, the radio signal processing unit 21 and the baseband processing unit 25. The power supply to the timing processing unit 26 and the control unit 28 is stopped. Note that the power supply unit 27 may stop power supply to a part of the wireless processing units, for example, only the wireless signal processing unit 21, or to the wireless signal processing unit 21 and the baseband processing unit 25. In addition, when notified from the interface unit 23 that the home base station apparatus 2 has been set to the active mode, the power supply unit 27 resumes power supply to each unit corresponding to the radio processing unit.
  • the control unit 28 includes, for example, one or a plurality of processors and their peripheral circuits. Then, the control unit 28 performs sequence management for a call connection request from the mobile station device 5 or a call connection request to the mobile station device 5. The control unit 28 controls and manages the entire home base station apparatus 2. Further, the control unit 28 may measure the coordinates of the installation position of the home base station device 2 based on the GPS signal received via the antenna 22. The control unit 28 may have a function of a power management unit instead of the interface unit 23. In this case, power supply to the control unit 28 is maintained while the home base station apparatus 2 is set to the sleep mode.
  • the base station apparatuses 3-1 to 3-4 have the same configuration as the home base station apparatus 2. Therefore, detailed description of the configuration of the base station devices 3-1 to 3-4 is omitted. However, the control units and interface units of the base station apparatuses 3-1 to 3-4 do not have to have a power management function. Further, when receiving the stop request command or the start request command from the baseband processing unit, the interface units of the base station devices 3-1 to 3-4 transfer the stop request command or the start request command to the home base station device 2.
  • FIG. 7 is a schematic configuration diagram of the mobile station device 5.
  • the mobile station device 5 includes a radio signal processing unit 51, an antenna 52, a storage unit 53, a baseband processing unit 54, a timing processing unit 55, a power supply unit 56, and a control unit 57.
  • the wireless signal processing unit 51 includes a transmission processing unit 511 and a reception processing unit 512.
  • the wireless signal processing unit 51, the storage unit 53, the baseband processing unit 54, the timing processing unit 55, and the control unit 57 are formed as separate circuits.
  • each of these units may be mounted on the mobile station apparatus 5 as one integrated circuit in which circuits corresponding to the respective units are integrated.
  • the radio signal processing unit 51 and the antenna 52 are the same functions and configurations as the radio signal processing unit 21 and the antenna 22 of the home base station apparatus 2 shown in FIG. Have Similarly, the timing processing unit 55 has the same function and configuration as the timing processing unit 26 of the home base station apparatus 2 shown in FIG. Therefore, detailed descriptions of the wireless signal processing unit 51, the antenna 52, and the timing processing unit 55 are omitted.
  • the transmission processing unit 511 of the wireless signal processing unit 51 multiplexes and modulates the uplink signal and the control signal by, for example, the SC-FDMA method.
  • the reception processing unit 512 demodulates and separates the multiplexed downlink signal and control signal using, for example, the OFDMA method.
  • the storage unit 53 includes, for example, a rewritable nonvolatile semiconductor memory. And the memory
  • the storage unit 53 stores a peripheral cell information table. In addition, the storage unit 53 stores whether the monitoring mode for controlling the start or stop of the home base station apparatus 2 is on or off.
  • the baseband processing unit 54 has functions such as radio resource control (Radio Resource Control, RRC) and radio resource management (Radio Resource Management, RRM).
  • the baseband processing unit 54 executes processing for wirelessly connecting the mobile station device 5 to the base station device, such as location registration, call control processing, and handover processing. Therefore, the baseband processing unit 54 generates a control signal for executing wireless connection processing between the mobile station device 5 and the base station device, and outputs the control signal to the wireless signal processing unit 51.
  • the baseband processing unit 54 executes processing according to the control signal received from any of the base station devices.
  • the baseband processing unit 54 receives an uplink signal including a voice signal or a data signal acquired from a control unit 57 via a user interface (not shown) such as a microphone (not shown) or a keypad. Then, the baseband processing unit 54 performs transmission processing such as information source coding processing and error correction coding processing on the uplink signal. Then, the baseband processing unit 54 outputs the encoded uplink signal to the radio signal processing unit 51.
  • the baseband processing unit 54 receives a downlink signal received from a wirelessly connected base station apparatus and demodulated by the wireless signal processing unit 51, and performs error correction decoding processing and information source decoding processing on the signal. And so on. Then, the baseband processing unit 54 passes the decoded downlink signal to the control unit 57.
  • the baseband processing unit 54 also performs transmission processing on various control signals generated by the control unit 57 such as a stop request command and a start request command. Then, the baseband processing unit 54 outputs the control signal subjected to the transmission process to the wireless signal processing unit 51. Then, the baseband processing unit 54 causes the radio signal processing unit 51 to transmit a stop request command and a start request command to the base station device that sets the cell where the mobile station device 5 is currently located.
  • the power supply unit 56 supplies power to each unit of the mobile station device 5.
  • the control unit 57 When the monitoring mode is on, the control unit 57, when the mobile station apparatus 5 moves between cells, the cell identification information shown in the neighboring cell information table stored in the storage unit 53 Then, it is checked whether or not the identification information of the cell in which the mobile station apparatus 5 is currently located matches. If the cell before movement is a cell indicated in the peripheral cell information table and the destination cell is not indicated in the peripheral cell information table, the control unit 57 generates a stop request command. Then, the control unit 57 passes the stop request command to the baseband processing unit 54. If the cell before the movement is a cell not shown in the neighboring cell information table and the destination cell is shown in the neighboring cell information table, the control unit 57 generates an activation request command. Then, the control unit 57 passes the activation request command to the baseband processing unit 54.
  • the control unit 57 generates an uplink signal including a voice signal or a data signal acquired through a user interface (not shown) such as a microphone (not shown) or a keypad. Then, the control unit 57 passes the uplink signal to the baseband processing unit 54. In addition, the control unit 57 extracts a voice signal or a data signal from the decoded downlink signal. The control unit 57 reproduces the extracted audio signal through a speaker (not shown) or displays a data signal on a display (not shown). Further, the control unit 57 may measure the coordinates of the current position of the mobile station device 5 based on the GPS signal received via the antenna 52 or the synchronization signal received from a plurality of base station devices.
  • the mobile station apparatus shifts to the sleep mode or the active mode to the home base station apparatus via the base station apparatus in which the currently located cell is set. Request. Therefore, the home base station device does not have to receive a radio signal from the mobile station device while in the sleep mode. Therefore, while the home base station device is in the sleep mode, the home base station device not only supplies power to the circuit that performs wireless signal transmission processing, but also supplies power to the circuit that performs wireless signal reception processing. You can stop. Therefore, this mobile communication system can suppress power consumption of the home base station apparatus when the home base station apparatus is not used.
  • this invention is not limited to said embodiment.
  • the mobile station device 5 passes through the base station device that sets the currently located cell, A stop request command may be transmitted to the base station apparatus 2.
  • the predetermined distance is determined in advance so as to be equal to or larger than the communicable distance determined by a contract between the user of the home base station device and the communication carrier, for example.
  • FIG. 8 shows the transition process of the home base station apparatus 2 to the sleep mode when the mobile station apparatus 5 makes a stop request for the home base station apparatus 2 based on the distance between the mobile station apparatus 5 and the home base station apparatus 2.
  • FIG. 8 the processes in steps S301 to S303 are the same as the processes in steps S101 to S103 shown in FIG. Therefore, detailed description of the processing in steps S301 to S303 is omitted.
  • step S303 when the home base station device 2 can receive radio waves from other base station devices (step S303-Yes), the home base station device 2 notifies the mobile station device 5 of communicable range information (step S303). S304).
  • This communicable range information represents a range communicable with the home base station apparatus 2, and is transmitted from the home base station apparatus 2 as a part of broadcast information, for example.
  • the communicable range information includes, for example, the coordinates of the installation position of the home base station device 2, the communicable distance of the home base station device 2, and the identification information of the home base station device 2.
  • the mobile station device 5 stores the communicable range information in the storage unit of its own device.
  • the mobile station apparatus 5 refers to the broadcast information received from the base station apparatus other than the home base station apparatus 2 to determine whether or not the mobile station apparatus 5 has moved to a cell other than the cell set by the home base station apparatus 2 (step S305). ). When the mobile station device 5 is located in the cell set by the home base station device 2 (No at Step S305), the mobile station device 5 repeats the process at Step S305. On the other hand, when the mobile station apparatus 5 moves to a cell other than the cell set by the home base station apparatus 2 (step S305—Yes), the mobile station apparatus 5 turns on the monitoring mode (step S306).
  • the mobile station device 5 measures the current position (step S307).
  • the mobile station device 5 measures the current position of the mobile station device 5 based on the received GPS signal, for example.
  • the mobile station device 5 may measure the current position of the mobile station device 5 by performing positioning using an Advanced Forward Link Trilateration (AFLT) method using synchronization signals received from a plurality of base station devices. Good.
  • AFLT Advanced Forward Link Trilateration
  • the mobile station apparatus 5 refers to the communicable range information and determines whether or not the distance between the current position of the mobile station apparatus 5 and the home base station apparatus 2 is equal to or less than a predetermined distance (step S308).
  • a predetermined distance step S308—Yes
  • the mobile station apparatus 5 repeats the processes of step S307 and step S308.
  • the mobile station device 5 is in the vicinity of the communicable area 2a of the home base station device 2.
  • the mobile station device 5 transmits a stop request command to the base station device that has set the cell where it is currently located, for example, via a shared control channel (step S309).
  • the base station apparatus that has received the stop request command transfers the stop request command to the home base station apparatus 2 (step S310).
  • the home base station apparatus 5 refers to the identification information of the mobile station apparatus 5 that is the transmission source of the stop request command, and is included in the stop request command. Is registered (step S311).
  • the home base station device 2 shifts to the sleep mode (step S312).
  • the home base station apparatus 2 not only stops transmission of radio signals, but also stops reception of radio signals, and stops power supply to circuits that perform radio signal transmission processing and reception processing.
  • the mobile station device 5 is not registered in the home base station device 2 (step S311-No)
  • the home base station device 2 does not shift to the sleep mode.
  • each apparatus of the mobile communication system 1 finishes the process of shifting the home base station apparatus to the sleep mode To do.
  • the mobile station apparatus 5 compares the distance between the mobile station apparatus 5 and the home base station apparatus 2 with a predetermined distance. When the distance between the mobile station device 5 and the home base station device 2 becomes equal to or less than a predetermined distance, the mobile station device 5 passes the home base station via the base station device in which the currently located cell is set. An activation request command is transmitted to the device 2. Then, the mobile station device 5 sets the monitoring mode to off.
  • the mobile station device 5 determines whether or not to execute the handover process in step S106 in FIG. 2 or step S201 in FIG. The determination may be made.
  • the mobile station device 5 determines whether or not the destination cell for handover is registered in the neighboring cell information table in step S110 of FIG. 2 or step S205 of FIG. May be. Thereby, even if the mobile station apparatus 5 is executing the communication service, the position of the mobile station apparatus 5 can be confirmed. Therefore, the mobile communication system 1 sets the unused home base station apparatus 2 at an appropriate timing. To enter sleep mode or active mode.
  • the home base station apparatus includes, in place of the neighboring cell information table, the neighboring base station including identification information of base stations installed around the home base station apparatus.
  • the station list may be transmitted to the mobile station apparatus.
  • the mobile station apparatus acquires identification information of the base station apparatus from the base station apparatus that sets the destination cell.
  • the mobile station apparatus determines whether or not the identification information of the base station apparatus that has set the destination cell is registered in the neighboring base station list, and stops if it is not registered.
  • a request command may be sent.
  • the mobile station apparatus determines whether or not the identification information of the base station apparatus that has set the destination cell is registered in the neighboring base station list.
  • the activation request command may be transmitted.
  • the mobile communication system may be a system based on a standard such as IMT-2000 that cannot directly communicate between base station apparatuses.
  • the base station device that has received the stop request command or the start request command from the mobile station device transfers the stop request command or the start request command to the home base station device via the radio network control device that is the upper node device. .
  • the base station apparatus that stops the power supply to the circuit that processes the radio signal by the stop request command from the mobile station apparatus is not limited to the mobile station apparatus registered in advance,
  • the mobile station device may be wirelessly connectable.
  • the mobile communication system can suppress power consumption, for example, even for a base station apparatus in which there is frequently a period in which no mobile station apparatus is wirelessly connected.
  • the processes in step S113 in FIG. 2, step S208 in FIG. 4, and step S311 in FIG. 8 are omitted.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention porte sur un système de communication mobile qui comprend un premier appareil de station de base, un ou plusieurs seconds appareils de station de base, et un appareil de station mobile qui peut être connecté sans fil au premier appareil de station de base ou à n'importe lequel des seconds appareils de station de base. Lorsque l'appareil de station mobile est sorti d'une portée prédéterminée comprenant la zone de communication du premier appareil de station de base, l'appareil de station mobile envoie un signal de requête d'arrêt à celui des seconds appareils de station de base qui forme une cellule dans laquelle l'appareil de station mobile se trouve actuellement. Le second appareil de station de base ayant reçu le signal de requête d'arrêt transmet le signal de requête d'arrêt reçu au premier appareil de station de base. Lors de la réception du signal de requête d'arrêt, le premier appareil de station de base arrête de fournir une certaine puissance à au moins une partie d'une unité de traitement radio qui traite des signaux radio.
PCT/JP2009/070493 2009-12-07 2009-12-07 Système de communication mobile, appareil de station de base, appareil de station mobile et procédé de commande de puissance d'appareil de station de base WO2011070644A1 (fr)

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PCT/JP2009/070493 WO2011070644A1 (fr) 2009-12-07 2009-12-07 Système de communication mobile, appareil de station de base, appareil de station mobile et procédé de commande de puissance d'appareil de station de base

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PCT/JP2009/070493 WO2011070644A1 (fr) 2009-12-07 2009-12-07 Système de communication mobile, appareil de station de base, appareil de station mobile et procédé de commande de puissance d'appareil de station de base

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150373639A1 (en) * 2014-06-20 2015-12-24 Qualcomm Incorporated SYSTEMS AND METHODS FOR POWER SAVING VIA ENHANCED SCANNING AND BEACONING FOR CO-LOCATED APs AND ASSOCIATED STAs
JP2019016879A (ja) * 2017-07-05 2019-01-31 シャープ株式会社 基地局装置、通信システム、通信方法及びプログラム

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009022533A1 (fr) * 2007-08-13 2009-02-19 Ntt Docomo, Inc. Système de communication mobile, dispositif de nœud supérieur, dispositif de station de base, dispositif de station mobile, et procédé de commande d'état de station de base
WO2009022534A1 (fr) * 2007-08-13 2009-02-19 Ntt Docomo, Inc. Système de communication mobile, dispositif de station de base générale, dispositif de station de base et procédé de commande d'état de station de base

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009022533A1 (fr) * 2007-08-13 2009-02-19 Ntt Docomo, Inc. Système de communication mobile, dispositif de nœud supérieur, dispositif de station de base, dispositif de station mobile, et procédé de commande d'état de station de base
WO2009022534A1 (fr) * 2007-08-13 2009-02-19 Ntt Docomo, Inc. Système de communication mobile, dispositif de station de base générale, dispositif de station de base et procédé de commande d'état de station de base

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150373639A1 (en) * 2014-06-20 2015-12-24 Qualcomm Incorporated SYSTEMS AND METHODS FOR POWER SAVING VIA ENHANCED SCANNING AND BEACONING FOR CO-LOCATED APs AND ASSOCIATED STAs
JP2019016879A (ja) * 2017-07-05 2019-01-31 シャープ株式会社 基地局装置、通信システム、通信方法及びプログラム

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