WO2005122624A1 - 携帯電話機、携帯電話機用基地局及び携帯電話システム - Google Patents
携帯電話機、携帯電話機用基地局及び携帯電話システム Download PDFInfo
- Publication number
- WO2005122624A1 WO2005122624A1 PCT/JP2004/008274 JP2004008274W WO2005122624A1 WO 2005122624 A1 WO2005122624 A1 WO 2005122624A1 JP 2004008274 W JP2004008274 W JP 2004008274W WO 2005122624 A1 WO2005122624 A1 WO 2005122624A1
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- WO
- WIPO (PCT)
- Prior art keywords
- base station
- mobile phone
- call
- emergency call
- information
- Prior art date
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Classifications
-
- 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
- H04W76/00—Connection management
- H04W76/50—Connection management for emergency connections
Definitions
- the present invention relates to a mobile phone, a base station for a mobile phone, and a mobile phone system which enable line connection and position identification at the time of an emergency call.
- H07-222622 discloses a communication means for securing a line connection for an emergency call in a conventional mobile phone, a mobile phone base station and a mobile phone system.
- a priority mobile device and a general mobile device are set in advance in a mobile phone, and a normal state or an emergency state is determined based on the judgment of a system maintenance person. Does not place restrictions on connections for both general mobiles and priority mobiles, but in an emergency situation, connection to general mobiles is not possible or connection time is limited so that only priority mobiles are connected with priority .
- Japanese Patent Laid-Open Publication No. 2003-209871 states that if an emergency call is received while all resources of the base station are in use, error correction of the call with the highest reception quality among the used resources is described.
- a communication means for reducing the processing rate by reducing the transmission rate of a call having a high transmission rate, reducing the processing load, and securing resources Further, communication means for providing a dedicated slot for emergency calls at the base station (Japanese Patent Laid-Open Publication No. 2003-87853), communication means for assigning a maintenance channel to emergency calls when all communication channels are in use (Japan) Japanese Patent Laid-Open No. 2000-287264) and communication means for assigning control channels (Japanese Patent Laid-Open No.
- the call being communicated is forcibly disconnected (Japanese Patent Publication No. 1-123434730), or a movable call is moved to another base station (see Japanese Patent 1 1—98, No. 554) Some respond to emergency calls.
- the connection of the emergency call is secured at the base station that receives both the normal call and the emergency call from the mobile phone. Therefore, if the radio resources of the base station are in use, including for emergency calls, it is not possible to accept a new emergency call, and if the cell of the base station is large, the location of the mobile phone that made the emergency call There was a problem that sufficient information could not be obtained to identify Disclosure of the invention
- the present invention has been made in order to solve such a problem, and it is possible to increase the reliability of connection of an emergency call from a mobile phone, and to further specify the position of a mobile phone during communication by making an emergency call.
- Mobile phones which can It is intended to obtain a base station for a mobile phone and a mobile phone system.
- a mobile phone according to the present invention obtains broadcast information of an emergency call dedicated base station from a normal base station in which the mobile phone is located, and performs an emergency call based on the broadcast information when making an emergency call.
- a call signal is transmitted to one of the normal base stations for communication, and the position is specified by predetermined processing based on the information of the mobile phone received by the mobile phone base station. I have.
- the mobile phone according to the present invention is configured as described above, the reliability of the emergency call connection from the mobile phone can be increased, the time until the connection can be shortened, and the location can be specified at the time of communication by the emergency call. As a result, police and fire departments can take immediate action.
- the base station for a mobile phone specifies the position of the mobile phone based on the received output power level information and the received power level of the mobile phone.
- the position of a mobile telephone can be specified at the time of communication by an emergency call, and the effect that the emergency response can be performed promptly becomes possible. To play.
- a mobile phone system includes a normal base station, a base station dedicated to emergency calls, and a network for communicating with them, which are the base stations for the mobile phone described above.
- Information on the emergency call-dedicated base station is provided to the mobile phone located in the cell where it is deployed via the normal base station at a predetermined cycle, and when an emergency call is made from the mobile phone, the mobile phone base station is used.
- the position of the mobile phone is specified by a predetermined process based on the information of the mobile phone received by the mobile phone.
- the mobile phone system according to the present invention is configured as described above, the reliability of connection of an emergency call from the mobile phone is improved, and the This makes it possible to identify the location of a mobile phone that is communicating with another emergency call, and even if there is no free space in the radio resources of one emergency call-dedicated base station, it can communicate with other emergency calls. If there is a base station, a new emergency call connection will be possible. In addition, in areas where base stations are installed at low density, such as coastlines and mountainous areas, the output power level of the base station is high, and the difference in the input electric field level with the mobile phone increases to prevent a one-way call and a high loss rate. By adding low-power emergency call base stations, the reliability of emergency call connection can be further improved.
- FIG. 1 is a block diagram of a mobile phone according to Embodiment 1 of the present invention.
- FIG. 2 is a schematic diagram showing a mobile phone system according to Embodiment 1 of the present invention.
- FIG. 3 is a flowchart showing a calling sequence performed by the mobile phone according to Embodiment 1 of the present invention.
- FIG. 4 is a diagram for explaining means for specifying the position of the mobile phone according to Embodiment 1 of the present invention.
- FIG. 5 is a block diagram showing a main part of a receiving circuit in the emergency call-dedicated base station according to Embodiment 1 of the present invention.
- FIG. 6 is a flowchart showing a calling sequence performed by the mobile phone according to Embodiment 2 of the present invention.
- FIG. 7 is a diagram illustrating another means for specifying the position of the mobile phone according to Embodiment 3 of the present invention.
- FIG. 1 is a block diagram of a mobile phone according to Embodiment 1 of the present invention.
- an antenna 1 transmits and receives radio waves to and from a base station (not shown), and a frequency converter section 2 converts a frequency of an RF signal for communicating with a base station to a baseband signal. It comprises a second frequency converter section 22 for performing frequency conversion between an RF signal and a baseband signal for communicating with the section 21 and the emergency call dedicated base station.
- the first frequency compensator unit 21 converts the RF signal from the base station into a baseband signal, while the downconverter unit 21 converts the baseband signal into an RF signal.
- the down converter 2 2 1 of the second frequency converter 2 2 converts the RF signal from the emergency call dedicated base station into a baseband signal
- the up converter 2 2 2 converts the baseband signal into an RF signal. Convert.
- the RF signal received by antenna 1 is converted to a paceband signal by downconverter 211 or 221, then demodulated by baseband demodulator 3, and controlled by radio communication control via channel decoder 5.
- the channel decoding unit 5 includes a physical format converter 511, an error correction decoder 511, and an error detector 513.
- the wireless communication control unit 7 exchanges data with a display unit (not shown), buttons, a microphone, a speaker, and the like via the interface 8 and also transmits an emergency call dedicated base station based on information received from a normal base station. It has an information acquisition unit (not shown) that is information acquisition means for acquiring notification information.
- data input to the wireless communication control unit 7 from the interface 8 is transmitted to the error detection coding unit 613, the error correction coding unit 612, and the physical format conversion unit of the channel coding unit 6.
- the signal is modulated by the baseband modulating unit 4 through 6 11, converted into an RF signal by the amplifier 2 or 2, and radiated from the antenna 1 as a radio wave.
- the wireless communication control unit 7 has a call judging unit (not shown) which is a call judging means for judging an emergency call when the emergency call number registered in advance matches the input telephone number. .
- the control unit 9 switches the frequency conversion unit 2 according to a predetermined sequence from the signals of the information acquisition unit and the call determination unit in the wireless communication control unit 7, and selects either the normal base station or the emergency call dedicated base station. Control to communicate with
- FIG. 2 is a schematic diagram of a mobile phone system according to the present invention.
- a large zone cell base station 10 (hereinafter referred to as base station 10) as a normal base station serving as a base station for a mobile phone has a large zone cell 12 which is an area that can communicate with the mobile phone 11.
- the network 13 includes an exchange (not shown) for controlling and switching communications.
- Emergency call microcell base stations 14, 15, 16 (hereinafter referred to as base stations) as emergency call-dedicated base stations that are mobile phone base stations that deploy emergency call microcells 14, 15, and 16) to receive an emergency call from a mobile phone 11 located in the area, and connect to a police station, fire department, etc. via the network 13.
- the large zone cell is a cell that is used only for normal calls in principle
- the emergency call microcell is a cell that is not used for normal calls but used only for emergency calls.
- FIG. 3 is a flowchart showing a calling sequence performed by the mobile phone 11. —T The operation of the first embodiment will be described based on FIG. 1, FIG. 2 and FIG.
- base station 10 and base stations 14, 15, and 16 each communicate with network 13.
- network 13 large zone cell 1 that base station 10 has control over It is possible to know the presence of the emergency call microcell base station in 2 and to transmit the broadcast information of the emergency call microcell base station to the mobile phone 11 via the base station 10 at a predetermined cycle.
- Broadcast information includes the presence / absence of microcell base stations for emergency calls, the microcell information for emergency calls (frequency information for TDMA, scrambling code for WCDMA, etc.), individual / common channel information, synchronization timing information, etc. Information required for communication and connection between the mobile phone 11 and the microcell base station for emergency calls.
- step 31 of FIG. 3 the information acquisition unit of the mobile phone 11 transmits the broadcast information of the emergency call microcell base station in the large zone cell in which it is located from the network 13 via the base station 10. To get.
- the call determination unit compares the number registered as an emergency call in advance with the input number, and this call is made. It is determined whether it is an emergency call. If this determination is an emergency call, the control unit 9 proceeds to step 34, and if there is an emergency call microcell base station that can be communicated from the emergency call microcell base station information acquired in step 31 Proceed to step 35 to switch the frequency converter unit 2 to the emergency call microcell base station and transmit a call signal.
- FIGS. Figure 4 shows the deployment of base station 10 in Figure 2. It shows a positional relationship between a base station 14 in a large zone cell 12 and an emergency call microcell 40 deployed by the base station 14 and a mobile phone 11 located in this cell.
- the emergency call microcell 40 is divided into three sector cells A, B, and C.
- the mobile phone 11 is located in the sector cell A and communicates via an emergency call via the base station 14.
- the main configuration of the receiving circuit from the mobile phone of the base station 14 is as shown in Fig. 5, and the radio waves from each sector cell received by each sector antenna A, B, and C pass through the outdoor amplifier 51 and are received by the receiving amplifier. It is input to 53 and processed via the frequency comparator 54.
- the power measurement units 52 A, 52 B, and 52 C measure the received power level corresponding to each sector antenna, and this information is transmitted to the network 13, and the mobile phone 11 It can be seen that is located.
- mobile phone 11 is located in sector cell A
- the power measurement unit 52A in Fig. 5 has the highest reception sensitivity
- mobile phone 11 is located in sector cell A. Can be identified.
- the emergency call microcell 40 is set smaller than the large zone cell 12 and is divided into three sector cells, for example, in the case of an emergency call microcell with a radius of 200 m, the position of the mobile phone is set to about 40 it can be specified to 1 8 0 collar ⁇ of O m 2. This is equivalent to the area of a circle with a radius of just over 100 m, and it is possible to specify the location of the mobile phone that made the emergency call in more detail than a large zone cell that usually has a radius of several km.
- the output power level of the mobile phone 11 is notified, the attenuation of the radio wave can be determined from the output power level and the reception power level from the mobile phone 11.
- the distance can be estimated by a predetermined calculation to specify the position of the mobile phone 11 in more detail. Further, at the base station 10 in FIG. 2 as well as the base station 14, the output power of the mobile phone 11 notified of the reception power level The approximate distance to the base station 10 can be estimated from the level, and the position of the mobile phone 11 can be specified in more detail together with this information. This position identification may be determined in any of the base station 14, the base station 10 and the network 13 based on information in the mobile phone system.
- Embodiment 2 Since the mobile phone, base station for mobile phone, and mobile phone system according to Embodiment 1 of the present invention are configured as described above, it is possible to increase the reliability of emergency call connection from the mobile phone, The location of the mobile phone that is communicating can be specified by calling. Embodiment 2
- FIG. 6 is a flowchart showing a calling sequence performed by the mobile phone according to Embodiment 2 of the present invention. The following description focuses on the steps that differ from the first embodiment.
- step 31 the information acquisition unit of the mobile phone 11 determines whether or not there is a radio resource of the microcell base station for emergency call as information of the microcell base station for emergency call from the network 13 via the base station 10. Information is also acquired.
- the control unit 9 proceeds to step 61 if there is an emergency call microcell base station that can be communicated in step 34, and further proceeds to step 35 if there is a radio resource of the emergency call microcell base station.
- a call signal is transmitted to the micro cell base station for emergency calls. If there is no radio resource of the micro cell base station for emergency call in step 61, the flow advances to step 36 to transmit a call signal to the large zone cell base station.
- Embodiment 2 Since the mobile phone, the mobile phone base station, and the mobile phone system according to Embodiment 2 of the present invention are configured as described above, it is possible to increase the reliability of emergency call connection from the mobile phone, Emergency call microphone Rocell S Unnecessary outgoing call is made when there is no radio resource at the local station. Since the call is not made to the Rocell base station, the connection time during an emergency call can be reduced. Furthermore, the location of the mobile phone in communication can be specified by an emergency call. Embodiment 3.
- FIG. 5 is a diagram showing another means for specifying the position of the mobile phone according to Embodiment 3 of the present invention. The difference from the other embodiments is that the location is specified by two emergency call microcell base stations.
- FIG. 7 base stations 14 and 15 in the large zone cell 12 deployed by the base station 10 of FIG. 2 and emergency call microcells 40 and 70 deployed by the base stations 14 and 15 are shown in FIG. This shows the positional relationship of the mobile phone 11, and the emergency call microcells 40 and 70 are divided into three sector cells A, B, C and ⁇ C ⁇ .
- the mobile phone 11 communicates via an emergency call via the sector cell A of the base station 14, which is transmitted from the base station 14 to the network 13.
- the base station 15 does not communicate with the mobile phone, but has a cell 71 that can receive radio waves from the mobile phone, and this cell is also included in the sector cells A 2 , B 2 , and C 2 . Has been split.
- the mobile phone 11 Since the size of the cell 71 is determined mainly by the output power level of the mobile phone, it is not a fixed size but can be specified only in the direction.
- the mobile phone 11 is located in the receivable sector cell A 2 of the base station 15, and the information is also transmitted from the base station 15 to the network 13. From the above, it can be seen that in the network 13, the mobile phone 11 is in the same gap area between the sector cells A and A 2 .
- This position identification may be determined in any of the base stations 14 and 15, the base station 10 or the network 13 based on information in the mobile phone system. Since the mobile phone, the mobile phone base station, and the mobile phone system according to Embodiment 3 of the present invention are configured as described above, it is possible to improve the reliability of emergency call connection from the mobile phone, By placing a call, the location of the mobile phone that is communicating can be specified in detail.
- the case where the number of emergency call microcell base stations for specifying the position is two has been described.
- three or more emergency call microcell base stations may be used, in which case the position of the mobile phone can be specified in more detail. There is a nature.
- the emergency call micro cell is divided into three sector cells, but the number is not limited to three. In other words, it is sufficient to divide the cell into a plurality of sector cells, and the more the number of divisions, the more detailed the position of the mobile phone can be specified. Furthermore, if the sector antenna is rotated so that the sector cells rotate in a circle around the base stations 14 and 15 and the intensity distribution of the received power from the sector cells is measured, or a higher directivity is obtained. By using an antenna, the position of the mobile phone can be specified in more detail.
- an emergency call is determined from a pre-registered number and an input telephone number.
- An emergency call button or switch is provided, and at least one of the button, switch, and number input is provided. The determination may be made by the operation described above, and in that case, a mobile phone with low possibility of erroneous operation or good operability can be realized.
- the mobile phone, the mobile phone base station, and the mobile phone system according to the present invention are suitable for use in a mobile phone, a mobile phone base station, and a mobile phone system that perform an emergency call.
Abstract
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PCT/JP2004/008274 WO2005122624A1 (ja) | 2004-06-08 | 2004-06-08 | 携帯電話機、携帯電話機用基地局及び携帯電話システム |
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PCT/JP2004/008274 WO2005122624A1 (ja) | 2004-06-08 | 2004-06-08 | 携帯電話機、携帯電話機用基地局及び携帯電話システム |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2023037586A1 (ja) * | 2021-09-08 | 2023-03-16 | シャープ株式会社 | UE(User Equipment)、通信システム及び通信方法 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH1042349A (ja) * | 1996-07-26 | 1998-02-13 | Nippon Motorola Ltd | 移動通信システムにおける移動局の位置推定システム |
JP2001093069A (ja) * | 1999-09-24 | 2001-04-06 | Matsushita Electric Ind Co Ltd | 車両間連携による緊急通報システム |
JP2002334388A (ja) * | 2001-05-08 | 2002-11-22 | Toshiba Corp | Its移動体通信網を用いた情報提供サービス方法およびシステム |
JP2003519454A (ja) * | 1999-09-29 | 2003-06-17 | ノキア コーポレイション | 無線通信システムにおいて非常コールを発信する装置及び関連方法 |
-
2004
- 2004-06-08 WO PCT/JP2004/008274 patent/WO2005122624A1/ja active Application Filing
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH1042349A (ja) * | 1996-07-26 | 1998-02-13 | Nippon Motorola Ltd | 移動通信システムにおける移動局の位置推定システム |
JP2001093069A (ja) * | 1999-09-24 | 2001-04-06 | Matsushita Electric Ind Co Ltd | 車両間連携による緊急通報システム |
JP2003519454A (ja) * | 1999-09-29 | 2003-06-17 | ノキア コーポレイション | 無線通信システムにおいて非常コールを発信する装置及び関連方法 |
JP2002334388A (ja) * | 2001-05-08 | 2002-11-22 | Toshiba Corp | Its移動体通信網を用いた情報提供サービス方法およびシステム |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2023037586A1 (ja) * | 2021-09-08 | 2023-03-16 | シャープ株式会社 | UE(User Equipment)、通信システム及び通信方法 |
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