WO2009131224A1 - 緊急情報受信方法、移動局及び無線基地局 - Google Patents
緊急情報受信方法、移動局及び無線基地局 Download PDFInfo
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- WO2009131224A1 WO2009131224A1 PCT/JP2009/058201 JP2009058201W WO2009131224A1 WO 2009131224 A1 WO2009131224 A1 WO 2009131224A1 JP 2009058201 W JP2009058201 W JP 2009058201W WO 2009131224 A1 WO2009131224 A1 WO 2009131224A1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
- H04W48/12—Access restriction or access information delivery, e.g. discovery data delivery using downlink control channel
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B27/00—Alarm systems in which the alarm condition is signalled from a central station to a plurality of substations
- G08B27/006—Alarm systems in which the alarm condition is signalled from a central station to a plurality of substations with transmission via telephone network
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
- H04M11/04—Telephonic communication systems specially adapted for combination with other electrical systems with alarm systems, e.g. fire, police or burglar alarm systems
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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
- H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
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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]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W68/00—User notification, e.g. alerting and paging, for incoming communication, change of service or the like
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/56—Allocation or scheduling criteria for wireless resources based on priority criteria
- H04W72/566—Allocation or scheduling criteria for wireless resources based on priority criteria of the information or information source or recipient
- H04W72/569—Allocation or scheduling criteria for wireless resources based on priority criteria of the information or information source or recipient of the traffic information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/50—Connection management for emergency connections
Definitions
- the present invention is configured such that a radio base station repeatedly transmits a plurality of types of system information to a plurality of mobile stations via a broadcast channel within a change period, and notifies a predetermined trigger regardless of the change period.
- the present invention relates to an emergency information receiving method, a mobile station, and a radio base station that receive emergency information in the mobile station.
- EWS Electronic Warning System
- PWS Public Warning System
- EWS / PWS it is considered to transmit emergency information to a plurality of mobile stations using SIB (System Information Block) on a broadcast channel (BCCH: Broadcastcast Channel).
- SIB System Information Block
- BCCH Broadcastcast Channel
- a radio base station is configured to repeatedly transmit a plurality of types of system information (SIB1-8) within a modification period (MP). Even when the occurrence of emergency information is detected, the base station cannot notify the emergency information in the current change period MP (n) until the next change period MP (n + 1) starts. There was a problem that such emergency information could not be transmitted.
- SIB1-8 system information
- MP modification period
- the present invention has been made in view of the above-described problems, and an emergency information receiving method and a mobile device capable of receiving emergency information at a plurality of mobile stations as soon as possible when the occurrence of emergency information is detected. It aims at providing a station and a radio base station.
- the first feature of the present invention is that a radio base station repeatedly transmits a plurality of types of system information within a change period to a plurality of mobile stations via a broadcast channel, regardless of the change period.
- An emergency information receiving method for receiving emergency information at a mobile station in a mobile communication system configured to notify a predetermined trigger, wherein when the mobile station detects a predetermined trigger, the next change period In the current change period, the process A receives scheduling information notification system information without waiting for the mobile station to start, and the mobile station is based on the scheduling information notified by the received scheduling information notification system information. And the process B of receiving the emergency information notification system information.
- the mobile station may further include a step C of performing processing corresponding to the emergency information notified by the received emergency information notification system information.
- a second feature of the present invention is that a radio base station repeatedly transmits a plurality of types of system information within a change period to a plurality of mobile stations via a broadcast channel, regardless of the change period.
- a mobile communication system configured to notify a predetermined trigger
- a mobile station configured to receive emergency information, and when a predetermined trigger is detected, the next change period starts.
- the scheduling information notification system information receiving unit configured to receive the scheduling information notification system information in the current change period without waiting, and the scheduling information notified by the received scheduling information notification system information
- For emergency information notifications configured to receive system information for emergency information notifications based on And summarized in that it comprises a stem information receiving unit.
- the second feature of the present invention may further comprise a processing unit configured to perform processing corresponding to the emergency information notified by the received emergency information notification system information.
- the emergency information notification system information receiving unit may be configured not to receive scheduling information other than the emergency information notification system information.
- the system information receiving unit for notifying scheduling information uses a predetermined indicator included in a paging message as the predetermined trigger.
- the system information for scheduling information notification may be received without waiting for the next modification period to start.
- the scheduling information notification system information receiving unit uses a physical downlink control channel including a paging identifier as the predetermined trigger.
- the scheduling information notification system information may be received in the current change period without waiting for the next change period to start.
- the scheduling information notification system information receiving unit when the scheduling information notification system information receiving unit receives a predetermined indicator via a physical downlink control channel including a predetermined identifier as the predetermined trigger, the next change period starts.
- the system information for scheduling information notification may be received in the current change period without waiting for the information to be changed.
- a third feature of the present invention is that a radio base station repeatedly transmits a plurality of types of system information within a change period to a plurality of mobile stations via a broadcast channel, regardless of the change period.
- a radio base station configured to transmit emergency information, and when the occurrence of the emergency information is detected, the plurality of mobile stations
- scheduling information specifying a downlink resource for transmitting emergency information notification system information is notified in the current change period without waiting for the next change period to start.
- Scheduling information notification system information transmitter configured to transmit scheduling information notification system information for Using the downlink resource specified by the scheduling information, and summarized in that comprises the emergency information notification system information emergency information notification system information transmitter unit configured to transmit.
- the scheduling information notification system information transmitting unit transmits a predetermined indicator in a paging message as the predetermined trigger to the mobile station in a standby state or a communication state. It may be configured.
- the scheduling information notification system information transmission unit transmits the predetermined trigger as a physical downlink control channel including a predetermined identifier.
- the predetermined indicator may be transmitted.
- the scheduling information notification system information transmission unit may be configured to transmit a predetermined indicator as a predetermined trigger via a physical downlink control channel including a predetermined identifier.
- FIG. 1 is an overall configuration diagram of a mobile communication system according to a first embodiment of the present invention.
- FIG. 2 is a functional block diagram of the radio base station according to the first embodiment of the present invention.
- FIG. 3 is a functional block diagram of the mobile station according to the first embodiment of the present invention.
- FIG. 4 is a diagram for explaining information transmitted on the BCCH by the radio base station according to the first embodiment of the present invention.
- FIG. 5 is a diagram illustrating an example of “ETWS / PWS Indicator” transmitted by the radio base station according to the first embodiment of the present invention.
- FIG. 6 is a diagram illustrating an example of “ETWS / PWS Indicator” transmitted by the radio base station according to the first embodiment of the present invention.
- FIG. 1 is an overall configuration diagram of a mobile communication system according to a first embodiment of the present invention.
- FIG. 2 is a functional block diagram of the radio base station according to the first embodiment of the present invention.
- FIG. 3 is a functional block diagram
- FIG. 7 is a diagram illustrating an example of a PDCCH including “ETWS / PWS Indicator” transmitted by the radio base station according to the first embodiment of the present invention.
- FIG. 8 is a diagram illustrating an example of a PDCCH including “ETWS / PWS-RNTI” transmitted by the radio base station according to the first embodiment of the present invention.
- FIG. 9 is a flowchart showing the operation of the mobile station according to the first embodiment of the present invention.
- FIG. 10 is an overall configuration diagram of a mobile communication system according to Modification 1 of the present invention.
- FIG. 11 is a diagram illustrating an example of a PDCCH including “ETWS / PWS-RNTI” transmitted by the radio base station according to the first modification of the present invention.
- FIG. 12 is a flowchart showing the operation of the mobile station according to the first modification of the present invention.
- a radio base station eNB sends a plurality of types of system information MIB to a plurality of mobile stations UE within a change period MP via a broadcast channel BCCH. (Master Information Block), SIB1-9 is repeatedly transmitted.
- MIB System Information Block
- the radio base station eNB includes an emergency information receiving unit 11 and an emergency information transmitting unit 12.
- the emergency information receiving unit 11 is configured to receive emergency information transmitted from the emergency information notification system, that is, configured to detect occurrence of emergency information.
- the emergency information transmission unit 12 is configured to transmit emergency information to the plurality of mobile stations UE via the broadcast channel BCCH.
- the emergency information transmission unit 12 has a plurality of mobile stations UE when emergency information is received by the emergency information reception unit 11, that is, when occurrence of emergency information is detected by the emergency information reception unit 11.
- the emergency information notification system information for example, SIB9
- MIB / SIB1 scheduling information notification system information
- the emergency information transmission unit 12 is configured to transmit emergency information notification system information (for example, SIB9) using the downlink resource specified by the scheduling information.
- emergency information notification system information for example, SIB9
- the mobile station UE includes an emergency information receiving unit 21 and a processing unit 22.
- the emergency information receiving unit 21 is configured to receive emergency information transmitted via the broadcast channel BCCH by the radio base station eNB.
- the emergency information receiving unit 21 when detecting a predetermined trigger, waits for the start of the next change period MP (n + 1) without waiting for the start of the next change period MP (n + 1).
- the system is configured to receive scheduling information notification system information (MIB / SIB1).
- the emergency information receiving unit 21 is configured to receive emergency information notification system information (for example, SIB9) based on the scheduling information notified by the received scheduling information notification system information (MIB / SIB1). ing.
- emergency information notification system information for example, SIB9
- the emergency information receiving unit 21 may be configured not to receive scheduling information (SIB2-8) other than the emergency information notification system information (for example, SIB9).
- the emergency information receiving unit 21 uses a predetermined indicator (ETWS / PWS Indicator) included in the paging message as a predetermined trigger.
- a predetermined indicator included in the paging message.
- the system information (MIB / SIB1) for scheduling information notification is received in the current change period MP (n) without waiting for the start of the next change period MP (n + 1). It may be.
- the paging message is transmitted by a PDSCH (Physical Downlink Shared Channel) corresponding to PDCCH (Physical Downlink Control Channel) including P-RNTI.
- PDSCH Physical Downlink Shared Channel
- PDCCH Physical Downlink Control Channel
- a predetermined indicator is a 1-bit indicator for notifying of the presence or absence of emergency information, or Primary Notification (short information for notifying emergency information first, used for ringing at a mobile station, etc. Is).
- the emergency information transmission unit 12 of the radio base station eNB sends, as a predetermined trigger, a predetermined indicator (in the paging message) to the mobile station UE that is in a standby state (Idle state) or a radio link establishment state (RRC_Connected state).
- ETWS / PWS Indicator may be configured to be transmitted.
- the emergency information receiving unit 21 includes P-RNTI (Paging-RNTI) as a predetermined trigger.
- P-RNTI Paging-RNTI
- a predetermined indicator EWS / PWS Indicator
- the current change period MP (n) is not waited for the next change period MP (n + 1) to start.
- the system information for scheduling information notification MIB / SIB1 may be received.
- a predetermined indicator is a 1-bit indicator for notifying the presence or absence of emergency information, or Primary Notification (short information for notifying emergency information first, used for ringing at a mobile station, etc. Is).
- the emergency information transmission unit 12 of the radio base station eNB performs P-RNTI (Paging-RNTI) as a predetermined trigger for the mobile station UE in the standby state (Idle state) and the radio link establishment state (RRC_Connected state).
- P-RNTI Paging-RNTI
- a predetermined indicator may be transmitted via a PDCCH (Physical Downlink Control Channel) including
- the emergency information receiving unit 21 uses SC-RNTI ( When a predetermined indicator (ETWS / PWS Indicator) is detected via PDCCH (Physical Downlink Control Channel) including System Change-RNTI (predetermined identifier), without waiting for the next change period MP (n + 1) to start
- SC-RNTI When a predetermined indicator (ETWS / PWS Indicator) is detected via PDCCH (Physical Downlink Control Channel) including System Change-RNTI (predetermined identifier), without waiting for the next change period MP (n + 1) to start
- the system information for scheduling information notification (MIB / SIB1) may be received in the current change period MP (n).
- a predetermined indicator is a 1-bit indicator for notifying of the presence or absence of emergency information, or Primary Notification (short information for notifying emergency information first, used for ringing at a mobile station, etc. Is).
- the emergency information transmission unit 12 of the radio base station eNB performs SC-RNTI (System Change-RNTI) as a predetermined trigger for the mobile station UE in the standby state (Idle state) and the radio link establishment state (RRC_Connected state).
- SC-RNTI System Change-RNTI
- the predetermined indicator may be transmitted via a PDCCH (physical downlink control channel) including a predetermined identifier.
- the emergency information receiving unit 21 detects a PDCCH (physical downlink control channel) including ETWS / PWS-RNTI (predetermined identifier) as a predetermined trigger
- the next change period MP The system may be configured to receive the scheduling information notification system information (MIB / SIB1) in the current change period MP (n) without waiting for n + 1) to start.
- MIB / SIB1 scheduling information notification system information
- the emergency information transmission unit 12 of the radio base station eNB is configured to transmit predetermined information as a predetermined trigger via a PDCCH (physical downlink control channel) including ETWS / PWS-RNTI (predetermined identifier). Also good.
- PDCCH physical downlink control channel
- ETWS / PWS-RNTI predetermined identifier
- the processing unit 22 is configured to perform processing corresponding to the emergency information notified by the received emergency information notification system information (for example, SIB9).
- SIB9 emergency information notification system information
- the processing unit 22 may output an alarm corresponding to the emergency information as a process corresponding to the emergency information, or may display text information or image information corresponding to the emergency information on the display.
- step S101 the mobile station UE detects a PDCCH including an ETWS / PWS-RNTI or an ETWS / PWS indicator.
- step S102 the mobile station UE receives MIB / SIB1 in the current change period MP (n) without waiting for the start of the next change period MP (n + 1).
- step S103 the SIB 9 is received based on the scheduling information notified by the received MIB / SIB 1, and processing corresponding to the emergency information notified by the SIB 9 (for example, alarm or display display) is performed.
- the mobile station UE when the mobile station UE detects a predetermined trigger, the mobile station UE does not wait for the next change period MP (n + 1) to start without changing the current change.
- the MIB / SIB1 is received, and the SIB9 for notifying emergency information can be received based on the MIB / SIB1, so that the generated emergency information can be transmitted as quickly as possible to a plurality of mobile stations The UE can be notified.
- the radio base station eNB transmits emergency information to a plurality of mobile stations UE via a common traffic channel CTCH (Common Non Traffic Channel). Is configured to do.
- CTCH Common Non Traffic Channel
- the emergency information transmission unit 12 of the radio base station eNB according to the first modification is configured to transmit emergency information to the plurality of mobile stations UE via the common traffic channel CTCH.
- the emergency information transmission unit 12 has a plurality of mobile stations UE when emergency information is received by the emergency information reception unit 11, that is, when occurrence of emergency information is detected by the emergency information reception unit 11. Is notified of a predetermined indicator (ETWS / PWS Indicator) and a downlink resource (PDSCH: PhysicalDlink) specified by a physical downlink control channel (PDCCH: Physical Downlink Control Channel) including a predetermined identifier (ETWS / PWS-RNTI). It is configured to transmit emergency information via CTCH on Shared Channel).
- a predetermined indicator ETS / PWS Indicator
- PDSCH PhysicalDlink
- PDCCH Physical Downlink Control Channel
- ETWS / PWS-RNTI predetermined identifier
- the emergency information receiving unit 21 of the mobile station UE according to the first modification is configured to receive emergency information transmitted via the common traffic channel CTCH by the radio base station eNB.
- the emergency information receiving unit 21 starts monitoring a physical downlink control channel (PDCCH) including a predetermined identifier (ETWS / PWS-RNTI) when detecting a predetermined indicator (ETWS / PWS Indicator),
- a physical downlink control channel (PDCCH) including a predetermined identifier (ETWS / PWS-RNTI) when detecting a predetermined indicator (ETWS / PWS Indicator)
- ETN physical downlink control channel
- the emergency information receiving unit 21 transmits a predetermined indicator (When an ETWS / PWS indicator is detected, monitoring of a physical downlink control channel (PDCCH) including a predetermined identifier (ETWS / PWS-RNTI) may be started.
- a predetermined indicator When an ETWS / PWS indicator is detected, monitoring of a physical downlink control channel (PDCCH) including a predetermined identifier (ETWS / PWS-RNTI) may be started.
- PDCCH physical downlink control channel
- ETWS / PWS-RNTI predetermined identifier
- the emergency information receiving unit 21 performs physical processing including a paging identifier.
- Monitoring of a physical downlink control channel (PDCCH) including a predetermined identifier (ETWS / PWS-RNTI) when a predetermined indicator (ETWS / PWS indicator) is received via the downlink control channel, that is, when such a predetermined indicator is detected May be configured to start.
- the emergency information receiving unit 21 receives a predetermined indicator (ETWS / PWS Indicator) via a PDCCH (predetermined physical downlink control channel) including P-RNTI (Paging-RNTI), that is, When such a predetermined indicator is detected, monitoring of the physical downlink control channel (PDCCH) including the predetermined identifier (ETWS / PWS-RNTI) may be started.
- a predetermined indicator EWS / PWS Indicator
- PDCCH predetermined physical downlink control channel
- P-RNTI Paging-RNTI
- the emergency information receiving unit 21 When the mobile station UE is in a radio link established state (RRC_Connected state) or in a standby state (Idle state), as shown in FIG. 7, the emergency information receiving unit 21 performs SC-RNTI (System Change).
- SC-RNTI System Change
- -A physical downlink control channel (PDCCH) including a predetermined identifier (ETWS / PWS-RNTI) when a predetermined indicator (ETWS / PWS Indicator) is detected via a PDCCH (predetermined physical downlink control channel) including an RNTI ) Monitoring may be started.
- emergency information is transmitted by a downlink resource (CTCH on PDSCH) specified by a physical downlink control channel (PDCCH) including a predetermined identifier (ETWS / PWS-RNTI).
- CCH on PDSCH downlink resource
- PDCCH physical downlink control channel
- ETWS / PWS-RNTI predetermined identifier
- step S201 the mobile station UE detects an ETWS / PWS indicator.
- step S202 the mobile station UE starts monitoring the physical downlink control channel (PDCCH) including the ETWS / PWS-RNTI.
- PDCCH physical downlink control channel
- step S203 the mobile station UE detects a physical downlink control channel (PDCCH) including ETWS / PWS-RNTI.
- PDCCH physical downlink control channel
- step S204 the mobile station UE receives emergency information on a downlink resource (CTCH on the PDSCH) specified by the physical downlink control channel (PDCCH), and performs processing corresponding to the emergency information (for example, an alarm or a display) Display).
- CCH on the PDSCH downlink resource specified by the physical downlink control channel (PDCCH)
- PDCCH physical downlink control channel
- the mobile station UE starts monitoring the physical downlink control channel (PDCCH) including the ETWS / PWS-RNTI when detecting a predetermined indicator (ETWS / PWS Indicator).
- a physical downlink control channel (PDCCH) including ETWS / PWS-RNTI is detected, emergency information is received on the downlink resource (CTCH on PDSCH) specified by the physical downlink control channel (PDCCH). Since it is configured, the generated emergency information can be notified to a plurality of mobile stations UE as quickly as possible.
- CTCH on PDSCH downlink resource specified by the physical downlink control channel (PDCCH). Since it is configured, the generated emergency information can be notified to a plurality of mobile stations UE as quickly as possible.
- a first feature of the first modification is an emergency information notification method in which the radio base station eNB notifies emergency information to a plurality of mobile stations UE, and the mobile station UE detects a predetermined indicator.
- the monitoring of the physical downlink control channel including the predetermined identifier is started, and when the mobile station UE detects the physical downlink control channel, the emergency information is transmitted in the downlink resource specified by the physical downlink control channel.
- the gist is that the receiving process B and the mobile station UE includes a process C for performing processing corresponding to the received emergency information.
- a second feature of the present modification 1 is a mobile station UE configured to receive emergency information transmitted by the radio base station eNB, and includes a physical that includes a predetermined identifier when a predetermined indicator is detected.
- An emergency information receiving unit configured to receive emergency information in a downlink resource specified by the physical downlink control channel when monitoring of the downlink control channel is started and a physical downlink control channel is detected.
- a processing unit configured to perform processing corresponding to emergency information.
- the emergency information reception unit when the mobile station UE is in a standby state or a communication state, performs physical downlink control when detecting a predetermined indicator in the paging message. It may be configured to start monitoring the channel.
- the emergency information receiving unit when the mobile station UE is in a standby state or a communication state, the emergency information receiving unit receives a predetermined indicator via a physical downlink control channel including a paging identifier. In this case, it may be configured to start monitoring the physical downlink control channel.
- the emergency information receiving unit may be configured to start monitoring the physical downlink control channel when a predetermined indicator is received via the predetermined physical downlink control channel.
- the third feature of the present modification 1 is a radio base station eNB configured to transmit emergency information to a plurality of mobile stations UE, and when the occurrence of emergency information is detected,
- the mobile station UE is provided with an emergency information transmitting unit configured to notify the mobile station UE of a predetermined indicator and transmit emergency information via a downlink resource designated by a physical downlink control channel including a predetermined identifier. This is the gist.
- the emergency information transmission unit may be configured to transmit a predetermined indicator in a paging message to the mobile station UE in a standby state or a communication state. Good.
- the emergency information transmission unit transmits a predetermined indicator via a physical downlink control channel including a paging identifier. It may be configured as follows.
- the emergency information transmission unit may be configured to transmit a predetermined indicator via a predetermined physical downlink control channel.
- the operations of the mobile station UE and the radio base station eNB described above may be implemented by hardware, may be implemented by a software module executed by a processor, or may be implemented by a combination of both. .
- the software modules include RAM (Random Access Memory), flash memory, ROM (Read Only Memory), EPROM (Erasable Programmable ROM), EEPROM (Electronically Erasable and Programmable, Removable ROM, Hard Disk, and Removable ROM).
- RAM Random Access Memory
- flash memory ROM (Read Only Memory)
- EPROM Erasable Programmable ROM
- EEPROM Electrically Erasable and Programmable, Removable ROM, Hard Disk, and Removable ROM.
- it may be provided in a storage medium of an arbitrary format such as a CD-ROM.
- Such a storage medium is connected to the processor so that the processor can read and write information from and to the storage medium. Further, such a storage medium may be integrated in the processor. Further, such a storage medium and a processor may be provided in the ASIC. Such an ASIC may be provided in the mobile station UE or the radio base station eNB. Further, the storage medium and the processor may be provided as a discrete component in the mobile station UE or the radio base station eNB.
- an emergency information receiving method a mobile station, and a radio base station that can receive emergency information at a plurality of mobile stations as soon as possible when the occurrence of emergency information is detected. Can be provided.
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Abstract
Description
図1乃至図8を参照して、本発明の第1の実施形態に係る移動通信システムの構成について説明する。
図9を参照して、本発明の第1の実施形態に係る移動局の動作について説明する。
本発明の第1の実施形態に係る移動通信システムによれば、移動局UEは、所定トリガを検出した場合に、次の変更期間MP(n+1)が開始するのを待つことなく、現在の変更期間MP(n)において、MIB/SIB1を受信し、かかるMIB/SIB1に基づいて、緊急情報を通知するSIB9を受信することができるため、発生した緊急情報を可及的速やかに複数の移動局UEに対して通知することができる。
図10乃至図12を参照して、本発明の変更例1に係る移動通信システムについて、上述の第1の実施形態に係る移動通信システムとの相違点に着目して説明する。
なお、以上に述べた本変更例1の特徴は、以下のように表現されていてもよい。
Claims (13)
- 無線基地局が、複数の移動局に対して、報知チャネルを介して、変更期間内において複数種類のシステム情報を繰り返し送信し、かつ、該変更期間に関係なく所定トリガを通知するように構成されている移動通信システムにおいて、該移動局において緊急情報を受信する緊急情報受信方法であって、
前記移動局が、所定トリガを検出した場合に、次の変更期間が開始するのを待つことなく、現在の変更期間において、前記複数種類のシステム情報の1つであるスケジューリング情報通知用システム情報を受信する工程Aと、
前記移動局が、受信した前記スケジューリング情報通知用システム情報によって通知されたスケジューリング情報に基づいて、緊急情報通知用システム情報を受信する工程Bとを有することを特徴とする緊急情報受信方法。 - 前記移動局が、受信した前記緊急情報通知用システム情報によって通知された緊急情報に対応する処理を行う工程Cを更に有することを特徴とする請求項1に記載の緊急情報受信方法。
- 無線基地局が、複数の移動局に対して、報知チャネルを介して、変更期間内において複数種類のシステム情報を繰り返し送信し、かつ、該変更期間に関係なく所定トリガを通知するように構成されている移動通信システムにおいて、緊急情報を受信するように構成されている移動局であって、
所定トリガを検出した場合に、次の変更期間が開始するのを待つことなく、現在の変更期間において、スケジューリング情報通知用システム情報を受信するように構成されているスケジューリング情報通知用システム情報受信部と、
受信した前記スケジューリング情報通知用システム情報によって通知されたスケジューリング情報に基づいて、緊急情報通知用システム情報を受信するように構成されている緊急情報通知用システム情報受信部とを具備することを特徴とする移動局。 - 受信した前記緊急情報通知用システム情報によって通知された緊急情報に対応する処理を行うように構成されている処理部を更に具備することを特徴とする請求項3に記載の移動局。
- 前記緊急情報通知用システム情報受信部は、前記緊急情報通知用システム情報以外のスケジューリング情報を受信しないように構成されていることを特徴とする請求項3に記載の移動局。
- 前記移動局が、待ち受け状態若しくは通信状態である場合には、前記スケジューリング情報通知用システム情報受信部は、前記所定トリガとして、ページングメッセージに含まれている所定インディケータを検出した場合に、次の変更期間が開始するのを待つことなく、現在の変更期間において、前記スケジューリング情報通知用システム情報を受信するように構成されていることを特徴とする請求項3に記載の移動局。
- 前記移動局が、待ち受け状態若しくは通信状態である場合には、前記スケジューリング情報通知用システム情報受信部は、前記所定トリガとして、ページング識別子を含む物理下り制御チャネルを介して所定インディケータを受信した場合に、次の変更期間が開始するのを待つことなく、現在の変更期間において、前記スケジューリング情報通知用システム情報を受信するように構成されていることを特徴とする請求項3に記載の移動局。
- 前記スケジューリング情報通知用システム情報受信部は、前記所定トリガとして、所定識別子を含む物理下り制御チャネルを介して所定インディケータを受信した場合に、次の変更期間が開始するのを待つことなく、現在の変更期間において、前記スケジューリング情報通知用システム情報を受信するように構成されていることを特徴とする請求項3に記載の移動局。
- 無線基地局が、複数の移動局に対して、報知チャネルを介して、変更期間内において複数種類のシステム情報を繰り返し送信し、かつ、該変更期間に関係なく所定トリガを通知するように構成されている移動通信システムにおいて、緊急情報を送信するように構成されている無線基地局であって、
前記緊急情報の発生を検知した場合に、前記複数の移動局に対して、所定トリガを通知すると共に、次の変更期間が開始するのを待つことなく、現在の変更期間において、緊急情報通知用システム情報を送信するための下りリソースを指定するスケジューリング情報を通知するためのスケジューリング情報通知用システム情報を送信するように構成されているスケジューリング情報通知用システム情報送信部と、
前記スケジューリング情報によって指定された下りリソースを用いて、緊急情報通知用システム情報を送信するように構成されている緊急情報通知用システム情報送信部とを具備することを特徴とする無線基地局。 - 待ち受け状態若しくは通信状態である前記移動局に対しては、前記スケジューリング情報通知用システム情報送信部は、前記所定トリガとして、ページングメッセージ内で所定インディケータを送信するように構成されていることを特徴とする請求項9に記載の無線基地局。
- 待ち受け状態若しくは通信状態である前記移動局に対しては、前記スケジューリング情報通知用システム情報送信部は、前記所定トリガとして、ページング識別子を含む下り物理チャネルを介して所定インディケータを送信するように構成されていることを特徴とする請求項9に記載の無線基地局。
- 前記スケジューリング情報通知用システム情報送信部は、前記所定トリガとして、所定識別子を含む物理下り制御チャネルを介して所定インディケータを送信するように構成されていることを特徴とする請求項9に記載の無線基地局。
- 無線基地局が、複数の移動局に対して、緊急情報を通知する緊急情報通知方法であって、
前記移動局が、所定インディケータを検出した場合に、所定識別子を含む物理下り制御チャネルの監視を開始する工程Aと、
前記移動局が、前記物理下り制御チャネルを検出した場合に、該物理下り制御チャネルによって指定される下りリソースにおいて、前記緊急情報を受信する工程Bとを有することを特徴とする緊急情報通知方法。
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