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WO2010058466A1 - Station de base sans fil, terminal sans fil, procédé de distribution d’informations spécifiques et procédé de réception d’informations spécifiques - Google Patents

Station de base sans fil, terminal sans fil, procédé de distribution d’informations spécifiques et procédé de réception d’informations spécifiques Download PDF

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Publication number
WO2010058466A1
WO2010058466A1 PCT/JP2008/071119 JP2008071119W WO2010058466A1 WO 2010058466 A1 WO2010058466 A1 WO 2010058466A1 JP 2008071119 W JP2008071119 W JP 2008071119W WO 2010058466 A1 WO2010058466 A1 WO 2010058466A1
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WIPO (PCT)
Prior art keywords
specific information
base station
wireless
emergency information
wireless terminal
Prior art date
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PCT/JP2008/071119
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English (en)
Japanese (ja)
Inventor
一 長谷川
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Fujitsu Ltd
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Fujitsu Ltd
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Application filed by Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to EP08878263.6A priority Critical patent/EP2357855B1/fr
Priority to JP2010539086A priority patent/JP5212479B2/ja
Priority to PCT/JP2008/071119 priority patent/WO2010058466A1/fr
Publication of WO2010058466A1 publication Critical patent/WO2010058466A1/fr
Priority to US13/079,930 priority patent/US9161194B2/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/90—Services for handling of emergency or hazardous situations, e.g. earthquake and tsunami warning systems [ETWS]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/20—Services signaling; Auxiliary data signalling, i.e. transmitting data via a non-traffic channel
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/50—Network services
    • H04L67/55—Push-based network services

Definitions

  • the present invention relates to a wireless base station, a wireless terminal, a specific information distribution method, and a specific information receiving method that distribute specific information to a wireless terminal.
  • Non-Patent Document 1 In a mobile communication system that is currently being realized or developed (for example, see Non-Patent Document 1), one of the purposes is to provide various communication services between a mobile station and a network device. Further, in recent mobile communication systems, needs as communication means at the time of abnormalities are increasing in accordance with improvement in the penetration rate of mobile phones and the coverage rate of communication areas, and expectations for public communication are increasing. For example, there is an increasing expectation that specific information such as earthquake information and fire information indicating an emergency situation will be notified to the user's mobile phone.
  • an emergency call reception system for receiving emergency information including an image via a mobile network using a mobile phone device having a videophone function for capturing an image and transmitting / receiving the image (for example, a patent) Reference 1).
  • the conventional mobile communication system has a problem that emergency information cannot be notified immediately depending on the standby state or communication state of the wireless terminal. This case has been made in view of such points, and a wireless base station, a wireless terminal, a specific information distribution method, and a specific information receiving method that can immediately notify specific information regardless of the state of the wireless terminal.
  • the purpose is to provide.
  • a wireless base station that performs wireless communication with a wireless terminal.
  • the radio base station includes a specific information receiving unit that receives specific information distributed from a higher-level device to the radio terminal, and a plurality of the specific information received by the specific information receiving unit that are activated in the radio base station.
  • Specific information distribution means for distributing to the wireless terminal via a physical channel.
  • FIG. 1 is a diagram showing a radio base station.
  • FIG. 1 also shows a host device 2 that controls the wireless base station 1 and a wireless terminal 3 that wirelessly communicates with the wireless base station 1.
  • the radio base station 1 has specific information receiving means 1a and specific information distribution means 1b.
  • the specific information receiving unit 1 a receives specific information distributed from the higher-level device 2 to the wireless terminal 3.
  • the specific information is emergency information such as earthquake information or tsunami information.
  • the specific information distribution unit 1 b distributes the specific information received by the specific information reception unit 1 a to the radio terminal 3 through a plurality of physical channels activated in the radio base station 1.
  • the radio base station 1 activates a common channel for broadcasting information to a plurality of radio terminals and a shared channel for allocating free radio resources to the radio terminals and transmitting voice data and the like.
  • the specific information distribution unit 1b can distribute the specific information to the wireless terminal 3 using the common channel. Further, if the wireless terminal 3 is communicating, the specific information can be distributed to the wireless terminal 3 using the shared channel.
  • the radio base station 1 distributes the specific information through a plurality of physical channels activated by the own station.
  • the wireless terminal 3 can immediately receive the specific information regardless of the standby state or the communication state.
  • FIG. 2 is a diagram illustrating a configuration example of a mobile communication system.
  • a LTE (Long Term Evolution) wireless system is applied.
  • the eNBs (evolved Node B) 11 to 13 are connected to MME / S-GW (Mobility Management Entity / Serving GateWay) 15 and 16, respectively.
  • MME / S-GW Mobility Management Entity / Serving GateWay
  • the eNBs 11 to 13 perform call control and also control radio communication with the UE (User Equipment) 14.
  • the eNBs 11 to 13 perform radio resource management (RRC: Radio Resource Control).
  • RRC Radio Resource Control
  • the UE 14 is a wireless terminal such as a mobile phone, for example.
  • the eNBs 11 to 13 and the UE 14 constitute, for example, E-UTRAN (Evolved Universal Terrestrial Radio Access Network).
  • the MME / S-GWs 15 and 16 terminate layer signals (NAS (Non Access Stratum) signals) for exchanging messages with the UE 14 and manage the idle state of the UE 14.
  • NAS Non Access Stratum
  • the MME / S-GWs 15 and 16 manage SAE (System Architecture) Evolution bearer resources and manage channels established between the UEs 14.
  • SAE System Architecture Evolution bearer resources and manage channels established between the UEs 14.
  • the MME / S-GWs 15 and 16 may be configured as separate devices for MME (function for controlling E-UTRAN) and S-GW (function for terminating data for users).
  • the eNBs 11 to 13 and the MME / S-GWs 15 and 16 exchange data via the S1 interface (S1-Application Protocol).
  • the eNBs 11 to 13 exchange data with each other through the X2 interface (X2-Application Protocol).
  • a CBC (Cell Broadcast Center) 17 is connected to the MME / S-GWs 15 and 16. For example, when the CBC 17 receives emergency information from an emergency information distribution station such as the Japan Meteorological Agency, the CBC 17 distributes the received emergency information to the MME / S-GWs 15 and 16.
  • an emergency information distribution station such as the Japan Meteorological Agency
  • Emergency information is information that should be immediately notified to the user, such as earthquake information and tsunami information.
  • the mobile communication system of FIG. 2 is intended to enable the user to evacuate or respond to an earthquake or tsunami by notifying the user of the information within a few seconds after the occurrence of the earthquake or tsunami.
  • the CBC 17 receives emergency information from the emergency information distribution station.
  • the CBC 17 delivers the received emergency information to the MME / S-GWs 15 and 16.
  • the MME / S-GWs 15 and 16 distribute the emergency information to the subordinate eNBs 11 to 13 using the control plane or user plane of the S1 interface.
  • the eNBs 11 to 13 When receiving the emergency information from the MME / S-GWs 15 and 16, the eNBs 11 to 13 deliver the emergency information to the UE 14 in the local station area.
  • the eNBs 11 to 13 map the emergency information to a plurality of downlink physical channels that can communicate (activate at the own station) and transmit the emergency information to the UE 14.
  • the downlink physical channel includes a common channel for broadcasting information to a plurality of UEs, and a shared channel for allocating free radio resources to UEs and transmitting voice data, mail data, and the like.
  • the eNBs 11 to 13 map the emergency information to a plurality of physical channels that can communicate with the local station, and distribute the emergency information to the UE 14.
  • the UE 14 can receive emergency information from the eNBs 11 to 13 via the common channel for broadcasting information. Further, the UE 14 can receive emergency information via the shared channel currently established with the eNBs 11 to 13 even when the UE 14 is in communication. That is, the UE 14 can immediately receive the emergency information regardless of the state.
  • the eNBs 11 to 13 map the emergency information to a plurality of physical channels that can communicate with the local station, and distribute the emergency information. Thereby, UE14 can receive emergency information immediately irrespective of a standby state and the state in communication.
  • FIG. 3 is a diagram for explaining the state of the UE.
  • the UE 14 has an idle state (LTE IDLE) 21, an active state (LTE ACTIVE) 22, and a detached state (LTE DETACHED) 23.
  • LTE IDLE idle state
  • LTE ACTIVE active state
  • LTE DETACHED detached state
  • the idle state 21 indicates that the UE 14 is in the communication area of the eNBs 11 to 13 and is in a standby state.
  • the active state 22 indicates that the UE 14 is in communication.
  • the communication state includes a connected state in which voice data and mail data are exchanged and an MBMS (Multimedia Broadcast Multicast Service) active state in which simultaneous information service data such as television data is received.
  • MBMS Multimedia Broadcast Multicast Service
  • FIG. 4 is a diagram illustrating a data format of emergency information transmitted from the MME / S-GW to the eNB.
  • the MME / S-GWs 15 and 16 transmit the emergency information in the format shown in FIG. 4 to the eNBs 11 to 13 through the S1 interface.
  • the emergency information includes a header, a logical channel type (Logical Channel type), an emergency communication indicator (emergency communication indicator), and an emergency information message.
  • the logical channel type indicates the logical channel type of the information (data). For example, it is assumed that the eNBs 11 to 13 receive the emergency information of FIG. 4 from the MME / S-GWs 15 and 16 through a logical channel called EmCCH (Emergency Control CHannel). In this case, information indicating the logical channel type of EmCCH is stored in the logical channel type column shown in FIG.
  • EmCCH Ergency Control CHannel
  • the emergency communication indicator indicates the content of emergency information.
  • the emergency communication indicator column stores information such as when an earthquake of seismic intensity x occurred and a ym tsunami occurred.
  • the emergency information message indicates a message for emergency information.
  • the emergency information message column stores other information accompanying the information indicated by the emergency communication indicator.
  • the eNBs 11 to 13 When the eNBs 11 to 13 receive the emergency information on the logical channel of EmCCH, the eNBs 11 to 13 map the received emergency information to all currently activated transport channels and map them to a plurality of physical channels.
  • the eNBs 11 to 13 start the transport channels of PCH (Paging CHannel), BCH (Broadcast control CHannel), DL-SCH (DownLink Shared CHannel), and MCH (Multicast CHannel).
  • PCH Paging CHannel
  • BCH Broadcast control CHannel
  • DL-SCH DownLink Shared CHannel
  • MCH Multicast CHannel
  • the eNBs 11 to 13 map the received emergency information to PCH, BCH, DL-SCH, and MCH transports.
  • the emergency information is mapped to a plurality of physical channels activated by the eNBs 11 to 13, and is notified to the UE 14 in the idle state or the active state.
  • a transport channel for mapping emergency information to a plurality of physical channels may be newly provided.
  • EmCH Evolution CHannel
  • the eNBs 11 to 13 when receiving the emergency information, can map the emergency information to a plurality of physical channels by mapping the received emergency information only to the EmCH.
  • FIG. 5 is a diagram for explaining the function of EmCH.
  • Each of the eNBs 11 to 13 can include an EmCH having a function as shown in FIG. 5 in the transport channel.
  • the EmCH has, for example, a function of HARQ (Hybrid Automatic Repeat reQuest). Further, the EmCH has an adaptive modulation function. For example, even when the amount of the emergency information message shown in FIG. 4 is large, the emergency information is immediately notified to the UE 14 by increasing the number of states per symbol. be able to.
  • the EmCH has a function of supporting MBMS transfer. EmCH also has a predefined transport format. Also, it is desirable that the EmCH be reported to all the coverage areas of the cell. Also, EmCH supports DRX (Discontinuous Reception) for UE 14 to perform power saving.
  • the EmCH has a function of being mapped to a physical channel that is dynamically used as a traffic channel or a control channel.
  • FIG. 6 is a diagram for explaining mapping of EmCH to a physical channel.
  • the eNBs 11 to 13 receive the emergency information shown in FIG. 4, the eNBs 11 to 13 map the emergency information to a plurality of physical channels activated by the own station using the EmCH.
  • the eNBs 11 to 13 start downlink physical channels such as PBCH (Physical Broadcast CHannel), PMCH (Physical Multicast CHannel), and PDSCH (Physical DownLink Shared CHannel).
  • PBCH Physical Broadcast CHannel
  • PMCH Physical Multicast CHannel
  • PDSCH Physical DownLink Shared CHannel
  • the PBCH is a physical channel for transmitting BCH broadcast information and the like, and periodically (for example, 10 seconds) is transmitted to the standby UE 14 located in the communication area of the eNBs 11 to 13. To do. Thereby, UE14 can receive emergency information periodically, even if it is in an Idle state.
  • PMCH is a physical channel for transmitting MBCH data of MCH and the like to the UE 14. If the eNBs 11 to 13 transmit MBMS data or the like to the UE 14, the eNBs 11 to 13 transmit emergency information together with the data. Thereby, even if UE14 is in an active state (MBMS active state), it can receive emergency information.
  • MBMS active state MBMS active state
  • PDSCH is a physical channel that transmits DL-SCH data and PCH data. Thereby, even if UE14 is in an active state (connected state), it can receive emergency information.
  • the PCH is a channel that realizes update change of BCCH (BroadcastroadControl CHannel) at the time of calling the UE 14 (incoming voice data, mail, etc.). Therefore, the UE 14 is periodically accessed. Thereby, UE14 can receive emergency information periodically, even if it is in an Idle state.
  • BCCH BroadcastroadControl CHannel
  • FIG. 7 is a diagram for explaining shared channel assignment.
  • the eNBs 11 to 13 and the users 1 to 6 (the UE 14 corresponds to any one of the users 1 to 6) perform wireless communication using an OFDMA (Orthogonal Frequency Division Multiple Access) wireless method. As shown in FIG. 7, the eNBs 11 to 13 assign radio frequencies to the users 1 to 6 over time and perform wireless communication.
  • OFDMA Orthogonal Frequency Division Multiple Access
  • radio resource allocation (both frequency axis / time axis) to users is not always guaranteed.
  • the eNBs 11 to 13 can stop (DRX) radio resource allocation for the user. That is, the eNBs 11 to 13 may not be able to transmit emergency information through a shared channel to users in an active state.
  • a DCCH Dedicated Control Channel
  • the eNBs 11 to 13 can transmit the emergency information to the user using the DCCH even when the emergency information cannot be transmitted through the shared channel.
  • the eNBs 11 to 13 allocate a part of radio resources allocated to the user to the emergency information. As a result, the allocation range of radio resources during communication is reduced, but communication is not interrupted.
  • FIG. 8 is a block diagram of the eNB. As illustrated in FIG. 8, the eNB 11 includes a radio unit 30 and a radio control unit 40. The host device 50 shown in FIG. 8 corresponds to the MME / S-GWs 15 and 16 shown in FIG. The eNBs 12 and 13 also have the same blocks as the eNB 11, and a description thereof is omitted.
  • the wireless unit 30 includes an outdoor reception amplifier 31, a transmission amplifier 32, a wireless transmission / reception unit 33, and an interface unit 34.
  • the outdoor reception amplifier 31 amplifies the reception signal received by the antenna and outputs it to the wireless transmission / reception unit 33.
  • the outdoor reception amplifier 31 outputs the transmission signal amplified by the transmission amplifier 32 to the antenna.
  • the transmission amplifier 32 amplifies the transmission signal output from the wireless transmission / reception unit 33 and outputs it to the antenna via the outdoor reception amplifier 31.
  • the wireless transmission / reception unit 33 performs wireless transmission processing of the signal output from the interface unit 34 and performs reception processing of the wireless signal output from the outdoor reception amplifier 31.
  • the interface unit 34 is an interface for exchanging signals with the wireless control unit 40.
  • the wireless control unit 40 includes an interface unit 41, a baseband processing unit 42, a transmission path interface unit 43, and a control unit 44.
  • the interface unit 41 is an interface that exchanges signals with the wireless unit 30.
  • the baseband processing unit 42 performs L (Layer) 1 / L2 signal generation and reception processing, and performs baseband processing such as data modulation / demodulation and radio frequency control. In addition, the baseband processing unit 42 performs mapping processing of emergency information received from the higher-level device 50 to a physical channel.
  • the transmission path interface unit 43 is an interface for exchanging data with the host device 50.
  • the control unit 44 performs call processing, radio resource management / allocation processing, parameter storage processing necessary for radio communication, and the like.
  • the control unit 44 controls the baseband processing unit 42 so that the emergency information received from the higher-level device 50 is transmitted using a plurality of physical channels.
  • the control unit 44 determines whether or not the emergency information received from the higher-level device 50 is to be distributed to the UE 14.
  • the emergency information is meaningful for notification within a time when the user can cope with an earthquake or a tsunami. Accordingly, when the emergency information notification exceeds the allowable time, the control unit 44 determines that the emergency information notification is meaningless and stops the emergency information distribution process.
  • FIG. 9 is a block diagram of the UE.
  • the UE 14 includes a radio unit 60, a baseband unit 70, a control unit 81, a storage unit 82, and a speaker / microphone 83.
  • the radio unit 60 includes a DUP (Duplexer) 61, an RX (Receiver) 62, an analog front end unit 63, a TX (Transmitter) 64, a PA (Power Amplifier) 65, and a frequency synthesizer 66.
  • DUP Duplexer
  • RX Receiveiver
  • TX Transmitter
  • PA Power Amplifier
  • the DUP 61 demultiplexes the radio signal so that the signal can be transmitted and received with one antenna.
  • the RX 62 amplifies the reception signal output from the DUP 61 and outputs the amplified signal to the analog front end unit 63.
  • the analog front end unit 63 converts the analog reception signal output from the RX 62 into digital data.
  • the analog front end unit 63 converts the digital data output from the L1 modem / codec unit 71 into an analog transmission signal.
  • TX 64 converts an analog transmission signal output from the analog front end unit 63 into a radio signal.
  • the TX 64 converts the transmission signal into a radio signal in accordance with the oscillation signal output from the frequency synthesizer 66 and the instruction of the baseband / radio control unit 72.
  • the PA 65 amplifies the radio signal output from the TX 64 and outputs it to the DUP 61.
  • the frequency synthesizer 66 outputs an oscillation signal for converting the transmission signal into a radio signal to the TX 64.
  • the baseband unit 70 includes an L1 modem / codec unit 71, a baseband / wireless control unit 72, and an audio interface unit 73.
  • the L1 modem / codec unit 71 performs L1 layer processing and channel codec processing on the user's voice signal output from the audio interface unit 73 and the reception signal output from the analog front end unit 63.
  • the baseband / radio control unit 72 performs baseband processing such as data modulation / demodulation and processing such as TX64 radio frequency control. In addition, the baseband / radio control unit 72 controls the power of the PA 65 to suppress transmission signal distortion and the like.
  • the audio interface unit 73 is an interface for exchanging audio data with the speaker / microphone 83.
  • the control unit 81 controls the entire UE 14. Based on the earliest emergency information received among the emergency information distributed through a plurality of physical channels, the control unit 81 generates a warning sound to urge the user to receive the emergency information. Then, the contents of the emergency information are displayed on the display screen. In addition, the control unit 81 determines whether the received emergency information has exceeded the valid period. This is because it is meaningless to notify the user of emergency information after a predetermined time has elapsed.
  • the storage unit 82 is a memory that stores an application that controls the entire UE 14.
  • the storage unit 82 also stores an application for notifying the user when emergency information is received.
  • Speaker / microphone 83 converts the user's voice signal output from audio interface unit 73 into voice.
  • the speaker / microphone 83 converts the user's voice into an electrical signal and outputs it to the audio interface unit 73.
  • the 10 and 11 are flowcharts showing the operation of the eNB.
  • the eNB 11 recognizes the transport channel activated by the own station. For example, the type and number of common channels such as PCH and BCH are recognized. In addition, the eNB 11 recognizes the number of UEs that have established a connection and the number of UEs that are present in the communication area. Below, although operation
  • step S1 the eNB 11 determines whether emergency information has been received from the MME / S-GWs 15 and 16. When receiving the emergency information, the eNB 11 proceeds to step S3. If the emergency information has not been received, the process proceeds to step S2.
  • step S2 the eNB 11 continues normal operation. For example, the eNB 11 performs call processing and the like.
  • the eNB 11 performs multi-distribution of the received emergency information to the transport channel (TPCH) activated in the local station. For example, when the BCH, PCH, MCH, and DL-SCH transport channels are activated, the eNBs 11 to 13 multi-distribute emergency information to these transport channels.
  • TPCH transport channel
  • step S4 the eNB 11 determines whether or not the multi-distribution of the emergency information to the transport channel is completed. When the multi-distribution of the emergency information to the transport channel is completed, the eNB 11 proceeds to step S8. If the multi-distribution of the emergency information to the transport channel is not completed, the process proceeds to step S5.
  • step S5 the eNB 11 determines whether or not the time for multi-delivery of emergency information has exceeded the allowable delivery time. When the eNB 11 exceeds the allowable delivery time, the eNB 11 proceeds to step S7. If the allowable delivery time has not been exceeded, the process proceeds to step S6.
  • the eNB 11 determines whether the emergency information delivery allowable time has been exceeded. Specifically, the eNB 11 compares the occurrence time of an earthquake or tsunami included in the emergency information with the current time, and calculates the elapsed time from the occurrence of the earthquake or tsunami. The eNB 11 compares the calculated elapsed time with the delivery allowable time for which the predetermined emergency information should be distributed, and determines whether the emergency information distribution allowable time is exceeded.
  • step S6 the eNB 11 distributes the emergency information to the transport channel to be redistributed.
  • step S7 the eNB 11 considers the immediacy of the emergency information and stops distributing the emergency information that has exceeded the allowable delivery time to the transport channel. Then, the eNB 11 ends the emergency information distribution process.
  • the eNB 11 maps emergency information from the transport channel to the physical channel. For example, the eNB 11 maps the emergency information distributed to the BCH to the physical channel of the PBCH, and maps the emergency information distributed to the PCH to the physical channel of the PMCH. Also, the eNB 11 maps the emergency information distributed to the PCH and DL-SCH to the physical channel of the PDSCH.
  • step S9 the eNB 11 delivers emergency information at the fastest timing of each physical channel. For example, it is assumed that the BCH performs information distribution every t seconds. If the eNB 11 is in time for the next BCH transmission timing, the eNB 11 transmits the emergency information at that timing.
  • step S10 the eNB 11 starts distributing emergency information on each physical channel.
  • the eNB 11 starts distributing emergency information using PBCH, PMCH, and PDSCH.
  • the parentheses in FIG. 11 indicate a transport channel in which emergency information is mapped to a physical channel.
  • step S11 the eNB 11 determines whether or not the delivery of emergency information on all physical channels has been completed. eNB11 complete
  • step S12 the eNB 11 determines whether or not the emergency information delivery time exceeds the delivery possible time. The eNB 11 proceeds to step S14 when the distribution available time is exceeded. If the distribution available time has not been exceeded, the process proceeds to step S13.
  • step S13 the eNB 11 distributes emergency information on the physical channel to be retransmitted.
  • step S14 the eNB 11 considers the immediacy of the emergency information, and stops the distribution of the emergency information on the physical channel that exceeds the distribution available time. Then, the eNB 11 ends the emergency information distribution process.
  • the eNB 11 performs multi-distribution of the received emergency information to the activated transport channel.
  • the transport channel includes the EmCH described in FIG. Distribute emergency information to EmCH.
  • the emergency information is mapped to the physical channels of PBCH, PMCH, and PDSCH activated in the eNB 11 by EmCH.
  • FIG. 12 is a flowchart showing the operation of the UE.
  • the UE 14 recognizes the state of the own station. For example, the UE 14 recognizes states such as an idle state, a connected state, and an MBMS active state.
  • step S21 the UE 14 receives RRC data from the eNB 11 through physical channels such as PBCH, PMCH, and PDSCH.
  • physical channels such as PBCH, PMCH, and PDSCH.
  • step S22 the UE 14 determines whether or not emergency information has been received. UE14 progresses to step S24, when emergency information is received. If the emergency information has not been received, the process proceeds to step S23.
  • step S23 the UE 14 performs normal call processing.
  • step S24 UE14 acquires the emergency information of the physical channel received earliest. That is, since it is desirable for the UE 14 to warn the user based on the emergency information received earliest, the emergency information of another physical channel received thereafter is discarded.
  • step S25 the UE 14 determines whether the acquired emergency information has exceeded the valid period. When the acquired emergency information exceeds the valid period, the UE 14 proceeds to step S21. If the acquired emergency information does not exceed the valid period, the process proceeds to step S26.
  • the reason why the UE 14 determines the effective period of the emergency information is that it is preferable to notify the user of the emergency information within a predetermined time as in the description of step S5 in FIG.
  • the determination of the effective period performed by the UE 14 is the same as that described in step S5 in FIG.
  • step S26 the UE 14 notifies the received emergency information to an application (APL) that warns the user.
  • step S27 the UE 14 (APL of the UE 14) informs the user that the emergency information has been received, for example, by blinking an LED (Light Emitting Diode) or sounding a warning sound. And UE14 displays the content of emergency information on a display screen.
  • APL Light Emitting Diode
  • the eNBs 11 to 13 map the emergency information to a plurality of physical channels activated by the own station, and distribute the emergency information to the UE 14. Thereby, UE14 can receive emergency information immediately irrespective of a standby state and the state in communication.
  • the eNBs 11 to 13 stop delivering emergency information when the time for delivering emergency information to the UE 14 is exceeded. As a result, the eNBs 11 to 13 can deliver only emergency information that is meaningful to enable the user to respond to disasters such as earthquakes and tsunamis.
  • the eNBs 11 to 13 use the existing physical channel to distribute emergency information, the eNB 11 to 13 can immediately notify the emergency information without providing a physical channel dedicated to emergency information with the UE 14. In addition, development costs can be reduced.
  • the emergency information when the emergency information is distributed only by one of the PBCH and the PMCH, the emergency information can be notified to the UE 14 only in one of the distribution periods of the PBCH and the PMCH.
  • the emergency information can be notified to the UE 14 earlier than the respective distribution cycles of PBCH and PMCH.
  • UE14 notifies a user of emergency information based on the emergency information received earliest. This increases the time for the user to deal with earthquakes and tsunamis. Moreover, UE14 cancels
  • the eNBs 11 to 13 when receiving the emergency information shown in FIG. 4, the eNBs 11 to 13 are assigned to a plurality of activated transport channels and mapped to a plurality of physical channels.
  • the eNBs 11 to 13 when the eNBs 11 to 13 have the EmCH in the transport channel, the eNBs 11 to 13 distribute the received emergency information to the EmCH and perform multi-distribution to a plurality of physical channels activated by the EmCH.
  • the eNBs 11 to 13 may distribute the received emergency information to a plurality of activated logical channels and map them to a plurality of physical channels.
  • the eNBs 11 to 13 are assumed to have activated logical channels of PCCH (Paging Control CHannel), BCCH, DTCH (Dedicated Traffic CHannel), and MTCH (Multicast Traffic CHannel).
  • PCCH Policy Control CHannel
  • BCCH Broadcast Traffic CHannel
  • DTCH Dedicated Traffic CHannel
  • MTCH Multicast Traffic CHannel
  • the eNBs 11 to 13 distribute the received emergency information to the PCCH, BCCH, DTCH, and MTCH.
  • the emergency information distributed to the PCCH is distributed to the PCH transport channel.
  • the emergency information delivered to the BCCH is delivered to the BCH transport channel.
  • the emergency information delivered to the DTCH is delivered to the DL-SCL transport channel.
  • the emergency information distributed to the MTCH is distributed to the MCH transport channel.
  • the emergency information is distributed to the UE 14 through the physical channels of PBCH, PMCH, and PDSCH, and the UE 14 can immediately receive the emergency information regardless of the standby state or the communication state. .

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  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Business, Economics & Management (AREA)
  • Health & Medical Sciences (AREA)
  • Emergency Management (AREA)
  • Environmental & Geological Engineering (AREA)
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  • Alarm Systems (AREA)

Abstract

Selon l'invention, des informations spécifiques peuvent être instantanément notifiées indépendamment de l'état d'un terminal sans fil. Un moyen de réception d'informations spécifiques (1a) reçoit des informations spécifiques distribuées depuis un dispositif de niveau plus élevé (2) vers un terminal sans fil (3). Un moyen de distribution d'informations spécifiques (1b) distribue les informations spécifiques reçues du moyen de réception d'informations spécifiques (1a) vers le terminal sans fil (3) via une pluralité de canaux physiques activés dans une station de base sans fil (1). Par exemple, on considère que la station de base sans fil (1) active un canal commun afin de rapporter périodiquement des informations à une pluralité de terminaux sans fil, ou un canal partagé afin d'attribuer des ressources sans fil disponibles aux terminaux sans fil, et de transmettre des données vocales ou analogue. Dans ce cas, si le terminal sans fil (3) est en mode veille, le moyen de distribution d'informations spécifiques (1b) peut distribuer les informations spécifiques au terminal sans fil (3) en utilisant le canal commun. Si le terminal sans fil (3) est en communication, le moyen de distribution d'informations spécifiques (1b) peut distribuer les informations spécifiques au terminal sans fil (3) en utilisant le canal partagé.
PCT/JP2008/071119 2008-11-20 2008-11-20 Station de base sans fil, terminal sans fil, procédé de distribution d’informations spécifiques et procédé de réception d’informations spécifiques Ceased WO2010058466A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP08878263.6A EP2357855B1 (fr) 2008-11-20 2008-11-20 Station de base sans fil, terminal sans fil, procédé de distribution d informations spécifiques et procédé de réception d informations spécifiques
JP2010539086A JP5212479B2 (ja) 2008-11-20 2008-11-20 無線基地局、無線端末、および特定情報配信方法
PCT/JP2008/071119 WO2010058466A1 (fr) 2008-11-20 2008-11-20 Station de base sans fil, terminal sans fil, procédé de distribution d’informations spécifiques et procédé de réception d’informations spécifiques
US13/079,930 US9161194B2 (en) 2008-11-20 2011-04-05 Wireless base station and method for emergency information delivery

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PCT/JP2008/071119 WO2010058466A1 (fr) 2008-11-20 2008-11-20 Station de base sans fil, terminal sans fil, procédé de distribution d’informations spécifiques et procédé de réception d’informations spécifiques

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US13/079,930 Continuation US9161194B2 (en) 2008-11-20 2011-04-05 Wireless base station and method for emergency information delivery

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WO2010058466A1 true WO2010058466A1 (fr) 2010-05-27

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US (1) US9161194B2 (fr)
EP (1) EP2357855B1 (fr)
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JP5212479B2 (ja) 2013-06-19
EP2357855A1 (fr) 2011-08-17
JPWO2010058466A1 (ja) 2012-04-12
EP2357855A4 (fr) 2014-11-12
US9161194B2 (en) 2015-10-13
US20110177824A1 (en) 2011-07-21
EP2357855B1 (fr) 2017-10-18

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