WO2011108222A1 - Mobile communication terminal device and wireless communication method - Google Patents

Mobile communication terminal device and wireless communication method Download PDF

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Publication number
WO2011108222A1
WO2011108222A1 PCT/JP2011/000974 JP2011000974W WO2011108222A1 WO 2011108222 A1 WO2011108222 A1 WO 2011108222A1 JP 2011000974 W JP2011000974 W JP 2011000974W WO 2011108222 A1 WO2011108222 A1 WO 2011108222A1
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network
input
telephone number
mobile communication
base station
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PCT/JP2011/000974
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French (fr)
Japanese (ja)
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布目知也
南田智昭
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パナソニック株式会社
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M7/00—Arrangements for interconnection between switching centres
    • H04M7/0024—Services and arrangements where telephone services are combined with data services
    • H04M7/0057—Services where the data services network provides a telephone service in addition or as an alternative, e.g. for backup purposes, to the telephone service provided by the telephone services network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
    • H04W36/0022—Control or signalling for completing the hand-off for data sessions of end-to-end connection for transferring data sessions between adjacent core network technologies
    • H04W36/00224—Control or signalling for completing the hand-off for data sessions of end-to-end connection for transferring data sessions between adjacent core network technologies between packet switched [PS] and circuit switched [CS] network technologies, e.g. circuit switched fallback [CSFB]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/34—Reselection control
    • H04W36/36—Reselection control by user or terminal equipment
    • H04W36/362—Conditional handover

Definitions

  • the present invention relates to a mobile communication terminal apparatus and a wireless communication method for switching between a circuit switching system and a packet switching system.
  • CS Circuit-Switch
  • PS Packet-Switch
  • GSM Global System for Mobile communications
  • W-CDMA Wideband Code Division Multiple Access
  • LTE Advanced Long Term Evolution
  • LTE-Advanced are scheduled to start in the future. Etc., it is assumed that the PS method is used.
  • a CS fallback function is provided as a function for providing a voice call service even when a communication terminal or a network cannot support a PS voice call for some reason.
  • the CS fallback function is a function for switching the communication network from the PS network to the CS network and performing a voice call in the CS system.
  • Non-Patent Document 1 stipulates the operation of mobile communication terminals and networks when applying CS fallback in LTE. When a mobile communication terminal starts a voice call using CS fallback, it is necessary to switch the communication network, which requires more procedures than when starting a normal voice call. .
  • FIG. 1 is a sequence diagram showing CS fallback processing disclosed in Non-Patent Document 1.
  • the mobile communication terminal detects completion of input of a telephone number (ST11)
  • the mobile communication terminal makes a request for handover (CS fallback) to the PS network base station (ST12).
  • the PS network base station issues a handover instruction to the mobile communication terminal (ST13), and the mobile communication terminal performs handover to the CS network base station (ST14).
  • the mobile communication terminal makes a call in the CS network (ST15).
  • An object of the present invention is to provide a mobile communication terminal device and a wireless communication method that reduce the waiting time of a user until the start of a call when performing CS fallback.
  • the mobile communication terminal device of the present invention when connected to the packet switching network, the input detection means for detecting the input of the telephone number by the user, and when the input detection means detects that the telephone number is being input, And a cell switching means for executing a handover to a circuit switched network.
  • the wireless communication method includes an input detection step of detecting input of a telephone number by a user, and a line when the input detection step detects that the telephone number is being input while connected to the packet switching network. And a cell switching step for executing a handover to the exchange network.
  • Sequence diagram showing CS fallback processing disclosed in Non-Patent Document 1 The figure which shows schematic structure of the mobile communication system which concerns on Embodiment 1 of this invention. Sequence diagram showing CS fallback processing in the mobile communication system shown in FIG. The figure which shows schematic structure of the mobile communication system which concerns on Embodiment 2 of this invention. Sequence diagram showing CS fallback processing in the mobile communication system shown in FIG. Sequence diagram showing CS fallback processing in a mobile communication system according to Embodiment 3 of the present invention
  • FIG. 2 is a diagram showing a schematic configuration of mobile communication system 100 according to Embodiment 1 of the present invention.
  • a PS network base station 101 and a CS network base station 102 are connected via a network 103, and a mobile communication terminal 104 is connected to the PS network base station 101 and the CS network base station 102.
  • wireless communication is a communication method for communicating with a PS network base station 101 and a CS network base station 102.
  • the mobile communication terminal 104 includes a user input unit 201, an input detection unit 202, a wireless communication unit 203, and a cell switching execution unit 204.
  • the user input unit 201 is a number button or a touch panel on which the user inputs a telephone number, and outputs to the input detection unit 202 that the telephone number is being input by the user.
  • the input detection unit 202 detects that the user input unit 201 is inputting the telephone number and that the input is completed, and outputs the detection result to the cell switching execution unit 204.
  • the case where a display unit (not shown) becomes a telephone number input screen or the telephone number input screen is displayed and the telephone number is input by a predetermined number of digits is considered. .
  • the wireless communication unit 203 communicates with the PS network base station 101 and the CS network base station 102, and notifies the cell switching execution unit 204 whether the network in communication is a PS network or a CS network.
  • the cell switching execution unit 204 acquires from the wireless communication unit 203 whether the PS network or the CS network is connected. While the wireless communication unit 203 is connected to the PS network, the telephone number is being input from the input detection unit 202. Is notified, the handover process from the PS network to the CS network is executed via the wireless communication unit 203.
  • FIG. 3 is a sequence diagram showing CS fallback processing in the mobile communication system 100 shown in FIG.
  • the input detection unit 202 detects that the user input unit 201 is inputting a telephone number (ST301).
  • the cell switching execution unit 204 makes a handover request to the PS network base station 101 via the wireless communication unit 203 (ST302).
  • the PS network base station 101 that has received the handover request instructs the mobile communication terminal 104 to perform handover (CS fallback) to the CS network base station 102 (ST303).
  • cell switching execution section 204 receives the handover instruction via radio communication section 203, cell switching execution section 204 performs handover (CS fallback) to CS network base station 102 (ST304).
  • the input detection unit 202 detects the completion of the telephone number input by the user input unit 201 (ST305)
  • the cell switching execution unit 204 sends a call request to the CS network base station 102 via the wireless communication unit 203. Perform (ST306).
  • the handover from the PS network to the CS network is performed in advance without waiting for the completion of the input of the telephone number.
  • FIG. 4 is a diagram showing a schematic configuration of mobile communication system 400 according to Embodiment 2 of the present invention.
  • FIG. 4 differs from FIG. 2 in that a storage unit 401 is added and the user input unit 202 is changed to a user input unit 402.
  • the storage unit 401 stores past outgoing call numbers, past incoming call numbers, telephone books, and the like, and a telephone number is selected by the user input unit 402.
  • the user input unit 402 selects the telephone number stored in the storage unit 401 and notifies the input detection unit 202 that the telephone number is being selected.
  • FIG. 5 is a sequence diagram showing CS fallback processing in the mobile communication system 400 shown in FIG.
  • the input detection unit indicates that the user input unit 402 is selecting a telephone number stored in the storage unit 401.
  • cell switching execution section 204 makes a handover request to PS network base station 101 via wireless communication section 203 (ST502).
  • the PS network base station 101 that has received the handover request instructs the mobile communication terminal 104 to perform handover to the CS network base station 102 (ST503).
  • receiving the handover instruction via radio communication section 203 cell switching execution section 204 performs handover to CS network base station 102 (ST504).
  • cell switching execution section 204 makes a call request to CS network base station 102 via wireless communication section 203. (ST506).
  • the PS network when it is detected that a telephone number has been selected by the user during communication with the PS network, the PS network is transferred in advance to the CS network without waiting for completion of the selection of the telephone number.
  • the PS network By implementing this handover, it is possible to reduce the waiting time of the user until the start of the call.
  • Embodiment 3 The mobile communication system according to Embodiment 3 of the present invention is the same as the configuration shown in FIG. 4 of Embodiment 2, and only some functions are different. Therefore, different functions will be described with the aid of FIG. .
  • the cell switching execution unit 204 acquires from the wireless communication unit 203 which base station is in the PS network or CS network, and the wireless communication unit 203 is in the PS network base station while the input detection unit
  • the priority indicating the ease of switching to the PS network is set low in cell selection, or the priority indicating the ease of switching to the CS network is increased. Set. That is, if the priority is high, the possibility of switching to the network is high, and if the priority is low, the possibility of switching to the network is low.
  • FIG. 6 is a sequence diagram showing CS fallback processing in the mobile communication system according to Embodiment 3 of the present invention.
  • the input detection unit indicates that the user input unit 402 is selecting the telephone number stored in the storage unit 401.
  • the cell switching execution unit 204 sets the priority of the PS network in cell selection low or sets the priority of the CS network high.
  • cell selection / cell reselection from the PS network base station 101 to the CS network base station 102 occurs (ST602).
  • the cell switching execution unit 204 sends a call request to the CS network base station 102 via the wireless communication unit 203. Perform (ST604).
  • cell selection is performed so as to prompt the user to switch from the PS network to the CS network.
  • the priority of the CS network in the reselection high, it is possible to increase the possibility that the mobile communication terminal is connected to the CS network when the input of the telephone number is completed or when the selection is completed. As a result, it is possible to reduce the waiting time of the user until the start of the call.
  • a telephone number may be input.
  • the selection of the telephone number in the second and third embodiments may be interpreted as inputting a telephone number in a broad sense.
  • the mobile communication terminal apparatus and the wireless communication method according to the present invention are useful for a mobile communication terminal that performs a voice call using the CS fallback function.

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

Abstract

Provided are a mobile communication terminal device and a wireless communication method which reduce user wait time for initiation of a call when resorting to CS fallback. When a mobile communication terminal (104) is in communication connection with a PS network base station (101), if an input detection unit (202) detects that a user input unit (201) is entering a phone number [ST301], a cell switching unit (204) issues a handover request to the PS network base station (101) [ST302]. The PS network base station (101) instructs the mobile communication terminal (104) to hand over to a CS network base station (102) [ST303]. The cell switching unit (204) hands over to the CS network base station (102) [ST304]. When the input detection unit (202) detects that the user input unit (201) has completed the input of the phone number [ST305], the cell switching unit (204) issues a call request to the CS network base station (102) [ST306].

Description

移動通信端末装置及び無線通信方法Mobile communication terminal apparatus and wireless communication method
　本発明は、回線交換方式とパケット交換方式とを切り替える移動通信端末装置及び無線通信方法に関する。 The present invention relates to a mobile communication terminal apparatus and a wireless communication method for switching between a circuit switching system and a packet switching system.
　移動通信端末の音声通話サービスの方式としては、大きく分けて回線交換（ＣＳ:Circuit Switch）方式とパケット交換（ＰＳ:Packet Switch）方式がある。従来のＧＳＭ（Global System for Mobile communications）やＷ－ＣＤＭＡ（Wideband Code Division Multiple Access）等ではＣＳ方式が用いられてきたが、今後サービス開始が予定されているＬＴＥ（Long Term Evolution）やＬＴＥ－Ａｄｖａｎｃｅｄ等ではＰＳ方式が用いられることが想定されている。 Mobile communication terminal voice call service systems can be broadly classified into circuit switching (CS: Circuit-Switch) and packet switching (PS: Packet-Switch). Conventional GSM (Global System for Mobile communications) and W-CDMA (Wideband Code Division Multiple Access) have used the CS method, but LTE (Advanced Long Term Evolution) and LTE-Advanced are scheduled to start in the future. Etc., it is assumed that the PS method is used.
　ＬＴＥでは、何らかの理由により通信端末やネットワークがＰＳ方式の音声通話に対応できていない場合にも音声通話サービスを提供するための機能として、ＣＳフォールバック機能が用意されている。ＣＳフォールバック機能とは、通信網をＰＳ網からＣＳ網へ切り替え、ＣＳ方式で音声通話を行うための機能である。 In LTE, a CS fallback function is provided as a function for providing a voice call service even when a communication terminal or a network cannot support a PS voice call for some reason. The CS fallback function is a function for switching the communication network from the PS network to the CS network and performing a voice call in the CS system.
　非特許文献１には、ＬＴＥにおいてＣＳフォールバックを適用する際の、移動通信端末やネットワークの動作などが規定されている。移動通信端末がＣＳフォールバックを利用して音声通話を開始する際には、通信網の切り替えが必要となるため、通常の音声通話を開始する場合に比べて多くの手続きが必要となっている。 Non-Patent Document 1 stipulates the operation of mobile communication terminals and networks when applying CS fallback in LTE. When a mobile communication terminal starts a voice call using CS fallback, it is necessary to switch the communication network, which requires more procedures than when starting a normal voice call. .
　図１は、非特許文献１に開示のＣＳフォールバック処理を示すシーケンス図である。移動通信端末において、電話番号の入力完了を検出すると（ＳＴ１１）、移動通信端末はＰＳ網基地局に対してハンドオーバ（ＣＳフォールバック）の要求を行う（ＳＴ１２）。ＰＳ網基地局は、移動通信端末に対してハンドオーバの指示を行い（ＳＴ１３）、移動通信端末はＣＳ網基地局へのハンドオーバを実施する（ＳＴ１４）。ハンドオーバが完了すると、移動通信端末はＣＳ網において発呼を行う（ＳＴ１５）。 FIG. 1 is a sequence diagram showing CS fallback processing disclosed in Non-Patent Document 1. When the mobile communication terminal detects completion of input of a telephone number (ST11), the mobile communication terminal makes a request for handover (CS fallback) to the PS network base station (ST12). The PS network base station issues a handover instruction to the mobile communication terminal (ST13), and the mobile communication terminal performs handover to the CS network base station (ST14). When the handover is completed, the mobile communication terminal makes a call in the CS network (ST15).
　しかしながら、ＣＳフォールバックを利用して音声通話を開始する場合、ＰＳ網からＣＳ網への切り替えが必要となるため、通信網の切り替えが必要ない場合に比べて、通話開始までのユーザの待ち時間が長くなるという問題がある。 However, when a voice call is started using CS fallback, switching from the PS network to the CS network is required, so that the waiting time of the user until the start of the call is compared with the case where switching of the communication network is not required. There is a problem that becomes longer.
　本発明の目的は、ＣＳフォールバックを行う際、通話開始までのユーザの待ち時間を低減する移動通信端末装置及び無線通信方法を提供することである。 An object of the present invention is to provide a mobile communication terminal device and a wireless communication method that reduce the waiting time of a user until the start of a call when performing CS fallback.
　本発明の移動通信端末装置は、ユーザによる電話番号の入力を検出する入力検出手段と、パケット交換網に接続中に、電話番号の入力中であることが前記入力検出手段によって検出された場合、回線交換網へのハンドオーバを実行するセル切替手段と、を具備する構成を採る。 The mobile communication terminal device of the present invention, when connected to the packet switching network, the input detection means for detecting the input of the telephone number by the user, and when the input detection means detects that the telephone number is being input, And a cell switching means for executing a handover to a circuit switched network.
　本発明の無線通信方法は、ユーザによる電話番号の入力を検出する入力検出工程と、パケット交換網に接続中に、電話番号の入力中であることが前記入力検出工程において検出された場合、回線交換網へのハンドオーバを実行するセル切替工程と、を具備するようにした。 The wireless communication method according to the present invention includes an input detection step of detecting input of a telephone number by a user, and a line when the input detection step detects that the telephone number is being input while connected to the packet switching network. And a cell switching step for executing a handover to the exchange network.
　本発明によれば、ＣＳフォールバックを行う際、通話開始までのユーザの待ち時間を低減することができる。 According to the present invention, when performing CS fallback, it is possible to reduce the waiting time of the user until the start of a call.
非特許文献１に開示のＣＳフォールバック処理を示すシーケンス図Sequence diagram showing CS fallback processing disclosed in Non-Patent Document 1 本発明の実施の形態１に係る移動通信システムの概略構成を示す図The figure which shows schematic structure of the mobile communication system which concerns on Embodiment 1 of this invention. 図２に示した移動通信システムにおけるＣＳフォールバック処理を示すシーケンス図Sequence diagram showing CS fallback processing in the mobile communication system shown in FIG. 本発明の実施の形態２に係る移動通信システムの概略構成を示す図The figure which shows schematic structure of the mobile communication system which concerns on Embodiment 2 of this invention. 図４に示した移動通信システムにおけるＣＳフォールバック処理を示すシーケンス図Sequence diagram showing CS fallback processing in the mobile communication system shown in FIG. 本発明の実施の形態３に係る移動通信システムにおけるＣＳフォールバック処理を示すシーケンス図Sequence diagram showing CS fallback processing in a mobile communication system according to Embodiment 3 of the present invention
　以下、本発明の実施の形態について、図面を参照して詳細に説明する。ただし、実施の形態において、同一機能を有する構成には、同一符号を付し、重複する説明は省略する。 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. However, in the embodiment, configurations having the same functions are denoted by the same reference numerals, and redundant description is omitted.
　（実施の形態１）
　図２は、本発明の実施の形態１に係る移動通信システム１００の概略構成を示す図である。この図に示すように、移動通信システム１００は、ＰＳ網基地局１０１とＣＳ網基地局１０２とがネットワーク１０３を介して接続され、移動通信端末１０４がＰＳ網基地局１０１及びＣＳ網基地局１０２と無線通信を行う。 (Embodiment 1)
FIG. 2 is a diagram showing a schematic configuration of mobile communication system 100 according to Embodiment 1 of the present invention. As shown in this figure, in a mobile communication system 100, a PS network base station 101 and a CS network base station 102 are connected via a network 103, and a mobile communication terminal 104 is connected to the PS network base station 101 and the CS network base station 102. And wireless communication.
　移動通信端末１０４は、ユーザ入力部２０１と、入力検出部２０２と、無線通信部２０３と、セル切替実行部２０４とを備える。 The mobile communication terminal 104 includes a user input unit 201, an input detection unit 202, a wireless communication unit 203, and a cell switching execution unit 204.
　ユーザ入力部２０１は、ユーザが電話番号の入力を行う番号ボタンや、タッチパネル等であり、ユーザによって電話番号が入力中であることを入力検出部２０２に出力する。 The user input unit 201 is a number button or a touch panel on which the user inputs a telephone number, and outputs to the input detection unit 202 that the telephone number is being input by the user.
　入力検出部２０２は、ユーザ入力部２０１が電話番号の入力中及び入力完了を検出し、検出結果をセル切替実行部２０４に出力する。なお、電話番号の入力中とは、図示せぬ表示部等が電話番号入力画面となった場合や、電話番号入力画面が表示され、電話番号が所定の桁数入力された場合などが考えられる。 The input detection unit 202 detects that the user input unit 201 is inputting the telephone number and that the input is completed, and outputs the detection result to the cell switching execution unit 204. In addition, when a telephone number is being input, the case where a display unit (not shown) becomes a telephone number input screen or the telephone number input screen is displayed and the telephone number is input by a predetermined number of digits is considered. .
　無線通信部２０３は、ＰＳ網基地局１０１及びＣＳ網基地局１０２との通信を行い、通信中の網がＰＳ網かＣＳ網かをセル切替実行部２０４に通知する。 The wireless communication unit 203 communicates with the PS network base station 101 and the CS network base station 102, and notifies the cell switching execution unit 204 whether the network in communication is a PS network or a CS network.
　セル切替実行部２０４は、無線通信部２０３からＰＳ網とＣＳ網のいずれに接続しているかを取得し、無線通信部２０３がＰＳ網に接続中に、入力検出部２０２から電話番号の入力中であることが通知された場合、無線通信部２０３を介してＰＳ網からＣＳ網へのハンドオーバ処理を実行する。 The cell switching execution unit 204 acquires from the wireless communication unit 203 whether the PS network or the CS network is connected. While the wireless communication unit 203 is connected to the PS network, the telephone number is being input from the input detection unit 202. Is notified, the handover process from the PS network to the CS network is executed via the wireless communication unit 203.
　図３は、図２に示した移動通信システム１００におけるＣＳフォールバック処理を示すシーケンス図である。図３において、移動通信端末１０４がＰＳ網基地局１０１との接続中に音声通話を開始する際、ユーザ入力部２０１が電話番号の入力中であることを入力検出部２０２が検出すると（ＳＴ３０１）、セル切替実行部２０４は無線通信部２０３を介してＰＳ網基地局１０１に対してハンドオーバ要求を行う（ＳＴ３０２）。 FIG. 3 is a sequence diagram showing CS fallback processing in the mobile communication system 100 shown in FIG. In FIG. 3, when the mobile communication terminal 104 starts a voice call while connected to the PS network base station 101, the input detection unit 202 detects that the user input unit 201 is inputting a telephone number (ST301). The cell switching execution unit 204 makes a handover request to the PS network base station 101 via the wireless communication unit 203 (ST302).
　ハンドオーバ要求を受けたＰＳ網基地局１０１は、移動通信端末１０４に対してＣＳ網基地局１０２へのハンドオーバ（ＣＳフォールバック）を指示する（ＳＴ３０３）。無線通信部２０３を介してハンドオーバ指示を受けたセル切替実行部２０４は、ＣＳ網基地局１０２へのハンドオーバ（ＣＳフォールバック）を実施する（ＳＴ３０４）。ハンドオーバ後、入力検出部２０２がユーザ入力部２０１による電話番号の入力完了を検出すると（ＳＴ３０５）、セル切替実行部２０４は無線通信部２０３を介して、ＣＳ網基地局１０２へ発呼の要求を行う（ＳＴ３０６）。 The PS network base station 101 that has received the handover request instructs the mobile communication terminal 104 to perform handover (CS fallback) to the CS network base station 102 (ST303). Receiving the handover instruction via radio communication section 203, cell switching execution section 204 performs handover (CS fallback) to CS network base station 102 (ST304). After the handover, when the input detection unit 202 detects the completion of the telephone number input by the user input unit 201 (ST305), the cell switching execution unit 204 sends a call request to the CS network base station 102 via the wireless communication unit 203. Perform (ST306).
　このように実施の形態１によれば、ＰＳ網との通信中にユーザからの電話番号の入力を検出した場合に、電話番号の入力完了を待たず、予めＰＳ網からＣＳ網へのハンドオーバを実施することにより、通話開始までのユーザの待ち時間を低減することができる。 As described above, according to the first embodiment, when the input of the telephone number from the user is detected during the communication with the PS network, the handover from the PS network to the CS network is performed in advance without waiting for the completion of the input of the telephone number. By implementing, it is possible to reduce the waiting time of the user until the start of the call.
　（実施の形態２）
　図４は、本発明の実施の形態２に係る移動通信システム４００の概略構成を示す図である。図４が図２と異なる点は、記憶部４０１を追加し、ユーザ入力部２０２をユーザ入力部４０２に変更した点である。 (Embodiment 2)
FIG. 4 is a diagram showing a schematic configuration of mobile communication system 400 according to Embodiment 2 of the present invention. FIG. 4 differs from FIG. 2 in that a storage unit 401 is added and the user input unit 202 is changed to a user input unit 402.
　記憶部４０１は、過去の発信番号、過去の着信番号、電話帳等を記憶し、ユーザ入力部４０２によって電話番号が選択される。 The storage unit 401 stores past outgoing call numbers, past incoming call numbers, telephone books, and the like, and a telephone number is selected by the user input unit 402.
　ユーザ入力部４０２は、記憶部４０１に記憶された電話番号を選択し、電話番号を選択中であることを入力検出部２０２に通知する。 The user input unit 402 selects the telephone number stored in the storage unit 401 and notifies the input detection unit 202 that the telephone number is being selected.
　図５は、図４に示した移動通信システム４００におけるＣＳフォールバック処理を示すシーケンス図である。図５において、移動通信端末１０４がＰＳ網基地局１０１との接続中に音声通話を開始する際、ユーザ入力部４０２が記憶部４０１に記憶された電話番号の選択中であることを入力検出部２０２が検出すると（ＳＴ５０１）、セル切替実行部２０４は無線通信部２０３を介して、ＰＳ網基地局１０１に対してハンドオーバ要求を行う（ＳＴ５０２）。 FIG. 5 is a sequence diagram showing CS fallback processing in the mobile communication system 400 shown in FIG. In FIG. 5, when the mobile communication terminal 104 starts a voice call while connected to the PS network base station 101, the input detection unit indicates that the user input unit 402 is selecting a telephone number stored in the storage unit 401. When 202 is detected (ST501), cell switching execution section 204 makes a handover request to PS network base station 101 via wireless communication section 203 (ST502).
　ハンドオーバ要求を受けたＰＳ網基地局１０１は、移動通信端末１０４に対してＣＳ網基地局１０２へのハンドオーバを指示する（ＳＴ５０３）。無線通信部２０３を介してハンドオーバ指示を受けたセル切替実行部２０４は、ＣＳ網基地局１０２へのハンドオーバを実施する（ＳＴ５０４）。ハンドオーバ後、入力検出部２０２がユーザ入力部４０２による電話番号の選択の完了を検出すると（ＳＴ５０５）、セル切替実行部２０４は無線通信部２０３を介して、ＣＳ網基地局１０２へ発呼の要求を行う（ＳＴ５０６）。 The PS network base station 101 that has received the handover request instructs the mobile communication terminal 104 to perform handover to the CS network base station 102 (ST503). Receiving the handover instruction via radio communication section 203, cell switching execution section 204 performs handover to CS network base station 102 (ST504). After handover, when input detection section 202 detects completion of selection of telephone number by user input section 402 (ST505), cell switching execution section 204 makes a call request to CS network base station 102 via wireless communication section 203. (ST506).
　このように実施の形態２によれば、ＰＳ網との通信中にユーザによって電話番号が選択されていることを検出した場合に、電話番号の選択完了を待たず、予めＰＳ網からＣＳ網へのハンドオーバを実施することにより、通話開始までのユーザの待ち時間を低減することができる。 As described above, according to the second embodiment, when it is detected that a telephone number has been selected by the user during communication with the PS network, the PS network is transferred in advance to the CS network without waiting for completion of the selection of the telephone number. By implementing this handover, it is possible to reduce the waiting time of the user until the start of the call.
　（実施の形態３）
　本発明の実施の形態３に係る移動通信システムは、実施の形態２の図４に示した構成と同様であり、一部の機能が異なるのみなので、異なる機能について図４を援用して説明する。 (Embodiment 3)
The mobile communication system according to Embodiment 3 of the present invention is the same as the configuration shown in FIG. 4 of Embodiment 2, and only some functions are different. Therefore, different functions will be described with the aid of FIG. .
　セル切替実行部２０４は、無線通信部２０３からＰＳ網とＣＳ網のいずれの基地局に在圏しているかを取得し、無線通信部２０３がＰＳ網基地局に在圏中に、入力検出部２０２から電話番号の選択中であることが通知された場合、セル選択においてＰＳ網への切り替え易さを示す優先度を低く設定するか、またはＣＳ網への切り替え易さを示す優先度を高く設定する。すなわち、優先度が高ければ、その網へ切り替わる可能性が高くなり、優先度が低ければ、その網へ切り替わる可能性が低くなる。 The cell switching execution unit 204 acquires from the wireless communication unit 203 which base station is in the PS network or CS network, and the wireless communication unit 203 is in the PS network base station while the input detection unit When it is notified from 202 that the telephone number is being selected, the priority indicating the ease of switching to the PS network is set low in cell selection, or the priority indicating the ease of switching to the CS network is increased. Set. That is, if the priority is high, the possibility of switching to the network is high, and if the priority is low, the possibility of switching to the network is low.
　図６は、本発明の実施の形態３に係る移動通信システムにおけるＣＳフォールバック処理を示すシーケンス図である。 FIG. 6 is a sequence diagram showing CS fallback processing in the mobile communication system according to Embodiment 3 of the present invention.
　図６において、移動通信端末１０４がＰＳ網基地局１０１との接続中に音声通話を開始する際、ユーザ入力部４０２が記憶部４０１に記憶された電話番号を選択中であることを入力検出部２０２が検出すると（ＳＴ６０１）、セル切替実行部２０４はセル選択におけるＰＳ網の優先度を低く設定するか、またはＣＳ網の優先度を高く設定する。これにより、ＣＳ網への切り替えが可能な場合には、ＰＳ網基地局１０１からＣＳ網基地局１０２へのセルセレクション・セルリセレクションが発生する（ＳＴ６０２）。 In FIG. 6, when the mobile communication terminal 104 starts a voice call while connected to the PS network base station 101, the input detection unit indicates that the user input unit 402 is selecting the telephone number stored in the storage unit 401. When 202 is detected (ST601), the cell switching execution unit 204 sets the priority of the PS network in cell selection low or sets the priority of the CS network high. Thus, when switching to the CS network is possible, cell selection / cell reselection from the PS network base station 101 to the CS network base station 102 occurs (ST602).
　セルセレクション・セルリセレクション実施後、入力検出部２０２が電話番号の選択完了を検出すると（ＳＴ６０３）、セル切替実行部２０４は無線通信部２０３を介して、ＣＳ網基地局１０２へ発呼の要求を行う（ＳＴ６０４）。 After the cell selection / cell reselection is performed, when the input detection unit 202 detects the completion of the selection of the telephone number (ST603), the cell switching execution unit 204 sends a call request to the CS network base station 102 via the wireless communication unit 203. Perform (ST604).
　このように実施の形態３によれば、ＰＳ網基地局に在圏中にユーザによって電話番号が選択されていることを検出した場合に、ＰＳ網からＣＳ網への切り替えを促すようにセルセレクション・リセレクションにおけるＣＳ網の優先度を高く設定することにより、電話番号の入力完了時、または選択完了時に移動通信端末がＣＳ網に接続している可能性を高めることができる。この結果、通話開始までのユーザの待ち時間を低減することができる。 As described above, according to the third embodiment, when it is detected that a telephone number is selected by the user while in the PS network base station, cell selection is performed so as to prompt the user to switch from the PS network to the CS network. By setting the priority of the CS network in the reselection high, it is possible to increase the possibility that the mobile communication terminal is connected to the CS network when the input of the telephone number is completed or when the selection is completed. As a result, it is possible to reduce the waiting time of the user until the start of the call.
　なお、本実施の形態において、電話番号を選択する場合について説明したが、実施の形態１に示したように、電話番号を入力する場合であってもよい。 In the present embodiment, the case of selecting a telephone number has been described. However, as shown in the first embodiment, a telephone number may be input.
　また、実施の形態２及び実施の形態３における電話番号の選択は、広義の電話番号入力と解釈してもよい。 Further, the selection of the telephone number in the second and third embodiments may be interpreted as inputting a telephone number in a broad sense.
　２０１０年３月４日出願の特願２０１０－０４７９８０の日本出願に含まれる明細書、図面及び要約書の開示内容は、すべて本願に援用される。 The disclosure of the specification, drawings and abstract contained in the Japanese application of Japanese Patent Application No. 2010-047980 filed on March 4, 2010 is incorporated herein by reference.
　本発明にかかる移動通信端末装置及び無線通信方法は、ＣＳフォールバック機能を利用して音声通話を行う移動通信端末に対して有用である。 The mobile communication terminal apparatus and the wireless communication method according to the present invention are useful for a mobile communication terminal that performs a voice call using the CS fallback function.
　１０１　ＰＳ網基地局
　１０２　ＣＳ網基地局
　１０３　ネットワーク
　１０４　移動通信端末
　２０１、４０２　ユーザ入力部
　２０２　入力検出部
　２０３　無線通信部
　２０４　セル切替実行部
　４０１　記憶部 DESCRIPTION OF SYMBOLS 101 PS network base station 102 CS network base station 103 Network 104 Mobile communication terminal 201, 402 User input part 202 Input detection part 203 Wireless communication part 204 Cell switching execution part 401 Storage part

Claims (5)

  1. 　ユーザによる電話番号の入力を検出する入力検出手段と、
    　パケット交換網に接続中に、電話番号の入力中であることが前記入力検出手段によって検出された場合、回線交換網へのハンドオーバを実行するセル切替手段と、
    　を具備する移動通信端末装置。     Input detection means for detecting input of a telephone number by a user;
    A cell switching means for executing a handover to the circuit switched network when the input detecting means detects that the telephone number is being entered while connected to the packet switched network;
    A mobile communication terminal apparatus comprising:
  2. 　電話番号を記憶する記憶手段を具備し、
    　前記セル切替手段は、パケット交換網に接続中に、前記記憶手段に記憶された電話番号の選択中であることが前記入力検出手段によって検出された場合、回線交換網へのハンドオーバを実行する請求項１に記載の移動通信端末装置。     Comprising storage means for storing a telephone number;
    The cell switching means, when connected to the packet switching network, executes a handover to the circuit switching network when the input detection means detects that the telephone number stored in the storage means is being selected. Item 4. The mobile communication terminal device according to Item 1.
  3. 　前記セル切替手段は、パケット交換網の無線基地局に在圏中に、電話番号の入力中であることが前記入力検出手段によって検出された場合、セルセレクション・リセレクションにおける回線交換網への切り替えを促す優先度を高く設定する請求項１に記載の移動通信端末装置。 The cell switching means switches to a circuit switching network in cell selection / reselection when the input detection means detects that a telephone number is being input while being in a radio base station of a packet switching network. The mobile communication terminal apparatus according to claim 1, wherein the priority for prompting is set high.
  4. 　前記セル切替手段は、パケット交換網の無線基地局に在圏中に、前記記憶手段に記憶された電話番号の選択中であることが前記入力検出手段によって検出された場合、セルセレクション・リセレクションにおける回線交換網への切り替えを促す優先度を高く設定する請求項２に記載の移動通信端末装置。 The cell switching means, when the input detecting means detects that the telephone number stored in the storage means is being selected while being in a radio base station of a packet switching network, cell selection / reselection 3. The mobile communication terminal device according to claim 2, wherein a priority for prompting switching to a circuit switching network is set high.
  5. 　ユーザによる電話番号の入力を検出する入力検出工程と、
    　パケット交換網に接続中に、電話番号の入力中であることが前記入力検出工程において検出された場合、回線交換網へのハンドオーバを実行するセル切替工程と、
    　を具備する無線通信方法。     An input detection step for detecting a telephone number input by a user;
    When it is detected in the input detection step that a telephone number is being input during connection to the packet switching network, a cell switching step for executing a handover to the circuit switching network;
    A wireless communication method comprising:
PCT/JP2011/000974 2010-03-04 2011-02-22 Mobile communication terminal device and wireless communication method WO2011108222A1 (en)

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