JP2008283535A - Communication area expanding method in portable phone network - Google Patents

Communication area expanding method in portable phone network Download PDF

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JP2008283535A
JP2008283535A JP2007126780A JP2007126780A JP2008283535A JP 2008283535 A JP2008283535 A JP 2008283535A JP 2007126780 A JP2007126780 A JP 2007126780A JP 2007126780 A JP2007126780 A JP 2007126780A JP 2008283535 A JP2008283535 A JP 2008283535A
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communication
mobile phone
hoc
portable phone
network
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Tomohiro Nakano
智博 中野
Tetsuya Yatagai
徹矢 谷田貝
Hideki Owada
英樹 大和田
Tatsuya Nakano
達哉 中野
Yoshio Takayanagi
良雄 高柳
Takashi Nakagawa
貴史 中川
Tatsuya Higuchi
達也 樋口
Yuji Shimoyama
裕司 下山
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NEC Corp
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NEC Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To expand a communication network without using additional equipment in a non-communication area (radio wave untransmittable and unreceivable area) of a portable communication system. <P>SOLUTION: Since a portable phone 123 that is desired to perform communication exists outside a telephone network as a result of retrieving a portable telephone network, a retrieval signal is transmitted as radio waves 152 to a portable phone existing in an ad hoc communication network area 142. Since an ad hoc communicable portable phone 122 exists in the ad hoc communication network area 142, when the portable phone 122 confirms ad hoc communication permission while the portable phone 122 does not communicate, communication connection with the portable phone 122 is established. The portable phone 122 similarly retrieves whether an ad hoc communicable portable phone exists within a d hoc communication network area 141, and since a portable phone 120 exists and is also within a communication area, a communication connection with portable phone 120 is established. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、携帯電話網における通信エリア拡張方法に関する。   The present invention relates to a communication area expansion method in a cellular phone network.

携帯電話を用いて通信を行うためには、該携帯電話が必ず携帯電話網の基地局(以後、中継基地局)の通信可能エリア内に存在しなければならない。   In order to communicate using a mobile phone, the mobile phone must be present in the communicable area of a base station (hereinafter referred to as a relay base station) of the mobile phone network.

図５において、１１０、１１１、１１２はそれぞれ中継基地局１００、１０１、１０２における電波が届く範囲(以後、セル)である。携帯端末１２０、１２１は各々セル１１０、１１２内に存在し、電波１３０、１３１を中継基地局１００、１０２と送受信可能なため、通信が可能となる。しかし、携帯電話１２２は図５のどのセルにも存在しないので通信が不可能となる。この非通信エリアを通信可能エリアとするためには、中継基地局の追加設置、移動基地局(車、飛行船など)の利用が挙げられる。しかし、これらは多額の設備投資と緊急時の即時利用が不可という問題がある。   In FIG. 5, 110, 111, and 112 are ranges (hereinafter referred to as cells) in which radio waves reach relay base stations 100, 101, and 102, respectively. Since the mobile terminals 120 and 121 exist in the cells 110 and 112 and can transmit and receive the radio waves 130 and 131 to and from the relay base stations 100 and 102, communication is possible. However, since the cellular phone 122 does not exist in any cell in FIG. 5, communication is impossible. In order to make this non-communication area a communicable area, additional installation of relay base stations and use of mobile base stations (cars, airships, etc.) can be mentioned. However, these have the problem that large capital investment and immediate use in an emergency are impossible.

なお、レスキュー隊員携行端末と、被災者が携行する無線端末がアドホック通信を行う点が記載されているが、これは、携帯電話網における通信エリアを拡張するためではない。
特開２００６−２３７６６６号公報 It is described that the rescue crew carrying terminal and the wireless terminal carried by the victim perform ad hoc communication, but this is not for expanding the communication area in the mobile phone network.
JP 2006-237666 A

近年の携帯電話中継基地局設置による携帯電話通信エリアのカバー率は常に増加傾向にあり、ほとんどのエリアにおいて通信が可能となっている。しかしながら、中継基地局の設置が困難なエリア(山岳や洋上など)が存在しており、今後もそのエリアに対しては対応不可となる可能性が非常に高い。また、平地より奥まったエリア(地下やマンションなど)に滞在していると電波が入りづらくなり、通信を遮断される恐れがある。   The coverage of mobile phone communication areas due to the recent installation of mobile phone relay base stations is constantly increasing, and communication is possible in most areas. However, there are areas where it is difficult to install a relay base station (mountain, ocean, etc.), and it is highly likely that such areas will not be supported in the future. In addition, if you are staying in an area deeper than the flat ground (basement, condominium, etc.), radio waves will be difficult to enter, and communication may be interrupted.

本発明の目的は、中継基地局の設置が困難、または電波が入りづらい場所(地下やマンション)に滞在などの理由による携帯通信システムの非通信エリア(電波送受信不可能エリア)を、追加設備を用いることなく、通信エリアに拡張する、携帯電話網の通信エリア拡張方法を提供することにある。   The purpose of the present invention is to provide additional facilities for non-communication areas (areas where radio waves cannot be transmitted) of mobile communication systems due to reasons such as difficulty in installing relay base stations or staying in places where radio waves are difficult to enter (basement or condominium). It is an object of the present invention to provide a method for extending a communication area of a mobile phone network that extends to a communication area without using it.

本発明の携帯電話網の通信エリア拡張方法は、アドホック通信機能を有する第１の携帯電話が携帯電話網の非通信エリアに存在する時、通信エリアにいるアドホック通信機能を有する第２の携帯電話とアドホック通信網内における通信コネクションを確立するものである。   The mobile phone network communication area expanding method according to the present invention provides a second mobile phone having an ad hoc communication function in a communication area when the first mobile phone having an ad hoc communication function exists in a non-communication area of the mobile phone network. And establishes a communication connection within the ad hoc communication network.

本発明は、従来の携帯電話網に、携帯端末間の近距離通信に最適とされるアドホック通信網を併用したデュアル回線網の利用により、通信エリアの拡張を実現する。   The present invention realizes expansion of a communication area by using a dual line network in which a conventional mobile phone network is used in combination with an ad hoc communication network that is optimal for short-range communication between mobile terminals.

本発明は、以下に記載するような効果を奏する。   The present invention has the following effects.

第１に、アドホック通信網の併用により、追加設備を用いることなく、通常の携帯電話網より通信エリアを拡張した通信を確保できる。   First, the combined use of an ad hoc communication network can secure communication with an expanded communication area compared to a normal mobile phone network without using additional equipment.

第２に、緊急時においてもアドホック通信網を展開することにより、携帯電話網圏外に居ながら即時通信が可能である。   Second, even in an emergency, by developing an ad hoc communication network, immediate communication is possible while outside the mobile phone network area.

次に、本発明の実施の形態について図面を参照して説明する。   Next, embodiments of the present invention will be described with reference to the drawings.

図１は本発明の、携帯電話網の通信エリア拡張方法を適用した携帯電話通信システムの構成例を示している。本携帯電話通信システムの通信網は、中継基地局１００，１０１，１０２の通信エリアであるセル１１０，１１１，１１２と、アドホック通信網１４１，１４２,・・・からなっている。セル１１０，１１２内にはそれぞれ携帯電話１２０，１２１が存在し、電波１３０，１３１によって中継基地局１００，１０２との通信が可能となっている。通信エリア拡張方法には、以下の２通りの方法があげられる。１つ目として、携帯電話１２２のようにセル１１０内に存在する携帯電話１２０とアドホック通信を行い、携帯電話１２０のみを介する通信を行う方法。２つ目として、携帯電話１２３および、それ以上セル１１０(すべてのセルを含む)から離れている場合、呼び出し側の携帯電話は近距離内に存在するアドホック通信を可能とする携帯電話を検索し(図１では、検索する側を１２３、検索された側を１２２で表す)、その携帯電話(１２２)が再度、アドホック通信機能を用いて、セル内の携帯電話と通信が可能となるまでこの通信を確立していく方法である。   FIG. 1 shows a configuration example of a mobile phone communication system to which a communication area expansion method for a mobile phone network according to the present invention is applied. The communication network of this cellular phone communication system is composed of cells 110, 111, 112, which are communication areas of the relay base stations 100, 101, 102, and ad hoc communication networks 141, 142,. Cell phones 120 and 121 exist in the cells 110 and 112, respectively, and communication with the relay base stations 100 and 102 is possible by the radio waves 130 and 131. The communication area expansion method includes the following two methods. First, a method of performing ad hoc communication with a mobile phone 120 existing in the cell 110 like the mobile phone 122 and performing communication only through the mobile phone 120. Second, when the mobile phone 123 and further cells 110 (including all cells) are further away, the calling mobile phone searches for a mobile phone that enables ad hoc communication that exists within a short distance. (In FIG. 1, the searching side is indicated by 123 and the searched side is indicated by 122), and this mobile phone (122) again uses this ad hoc communication function until it can communicate with the mobile phone in the cell. This is a method of establishing communication.

図２は図１中の携帯電話１２０，１２２と中継基地局１００の構成を示している。中継基地局１００は、電話網送受信部２１１とその他の既存の機能部(不図示)で構成されている。セル１１０内に存在する携帯電話１２０は電話網送受信部２０１と携帯電話通信機能部２０２とアドホック通信網送受信部２０３とアドホック通信網機能部２０４で構成されている。携帯電話通信機能部２０２は、通話、メール、Ｗｅｂ、アプリ他の機能を有している。アドホック通信網送受信部２０３はアドホック通信網における電波の送受信を行う。アドホック通信網機能部２０４はＩＰ管理、ルーティング他の機能を有している。セル１１０，１１１，１１２のいずれにも存在しない携帯電話１２２，１２３は、アドホック通信網送受信部２２１とアドホック通信機能部２２２と携帯電話１２０と同様の従来の機能部(不図示)で構成されている。   FIG. 2 shows the configuration of the mobile phones 120 and 122 and the relay base station 100 in FIG. The relay base station 100 includes a telephone network transmission / reception unit 211 and other existing functional units (not shown). The mobile phone 120 existing in the cell 110 includes a telephone network transmission / reception unit 201, a mobile phone communication function unit 202, an ad hoc communication network transmission / reception unit 203, and an ad hoc communication network function unit 204. The mobile phone communication function unit 202 has other functions such as a call, mail, Web, and an application. The ad hoc communication network transmission / reception unit 203 performs transmission / reception of radio waves in the ad hoc communication network. The ad hoc communication network function unit 204 has functions such as IP management and routing. The mobile phones 122 and 123 that do not exist in any of the cells 110, 111, and 112 are configured by ad hoc communication network transmission / reception unit 221, ad hoc communication function unit 222, and conventional functional units (not shown) similar to the mobile phone 120. Yes.

次に、本実施形態の動作を、非通信エリアに存在する携帯電話１２３が通信エリア（この場合セル１１０）に存在する携帯電話１２０と通信する場合について図３と図４に示すフローチャートを参照して説明する。   Next, the operation of the present embodiment will be described with reference to the flowcharts shown in FIG. 3 and FIG. 4 when the mobile phone 123 existing in the non-communication area communicates with the mobile phone 120 existing in the communication area (in this case, the cell 110). I will explain.

まず、ステップ３０１に、携帯電話１２３による携帯電話網検索を従来の機能を用いて実施する。携帯電話網検索の結果、ステップ３０２で電話網圏内(電波送受信可)であれば、ステップ３０３に通常の携帯電話網を利用した通信モードを実施する。実施から一定時間が経過した後、ステップ３０４にて通信が完了しているのかを確認する。通信が完了していれば、そのまま本処理を終了とする。また、通信が完了していなければステップ３０１に戻り、現在の通信位置が電話網圏内であるのかを再度確認する。これは、通信途中に圏外となり、通信が途切れるのを防止するためである。ステップ３０２で、電話網圏外(電波送受信不可)であれば、ステップ３０５でのアドホックモード開始処理を実施する。アドホックモード開始処理が始まると、アドホック通信機能部２２２より検索信号を生成し、ステップ３０６にアドホック通信網送受信部２２１より、生成した検索信号を電波１５２としてアドホック通信網圏内１４２に存在する携帯電話に向かって送信する。ステップ１０７に、アドホック通信網圏１４２内に本機能に対応した通信可能な携帯電話が存在するかどうか確認する。アドホック通信網圏１４２内に通信可能な携帯電話が存在すれば、携帯電話１２３はステップ１０８に、携帯電話１２２が通話中か否かをアドホック通信機能部２０４にて確認する。通話中でなければ、ステップ１０９に、アドホック通信許可の確認を行う。携帯電話１２３は、アドホック利用許可の情報を、携帯電話１２２よりアドホック通信網送受信部２０３を経由して受信した場合、携帯電話１２２との通信コネクションの確立処理を実施する。また、ステップ３０７，３０８で「Ｎｏ」の場合は、コネクションＮＧとしてステップ３０５に戻り、携帯電話１２３は、再度コネクション可能な携帯電話を検索する。   First, in step 301, a mobile phone network search by the mobile phone 123 is performed using a conventional function. As a result of the mobile phone network search, if it is within the telephone network range (can transmit and receive radio waves) in step 302, a communication mode using a normal mobile phone network is implemented in step 303. After a certain time has passed since the execution, it is confirmed in step 304 whether communication is completed. If the communication is complete, the process is terminated. If communication has not been completed, the process returns to step 301 to confirm again whether the current communication position is within the telephone network range. This is to prevent the communication from being interrupted due to out-of-service communication. If it is outside the telephone network range (cannot transmit / receive radio waves) at step 302, an ad hoc mode start process at step 305 is executed. When the ad hoc mode start processing starts, a search signal is generated from the ad hoc communication function unit 222, and the generated search signal is transmitted from the ad hoc communication network transmission / reception unit 221 to the mobile phone existing in the ad hoc communication network area 142 in step 306 as a radio wave 152. Send towards. In step 107, it is confirmed whether or not a mobile phone that can communicate with this function exists in the ad hoc communication network area 142. If there is a mobile phone communicable in the ad hoc communication network area 142, the mobile phone 123 confirms in step 108 with the ad hoc communication function unit 204 whether or not the mobile phone 122 is busy. If the call is not in progress, ad-hoc communication permission is confirmed in step 109. When the mobile phone 123 receives the ad hoc usage permission information from the mobile phone 122 via the ad hoc communication network transmission / reception unit 203, the mobile phone 123 performs processing for establishing a communication connection with the mobile phone 122. If “No” in steps 307 and 308, the connection NG is returned to step 305, and the mobile phone 123 searches for a mobile phone that can be connected again.

次に、ステップ３１１において、アドホック通信を許可した携帯電話１２２による携帯電話網検索を従来の機能にて実施する。携帯電話網検索の結果、ステップ３１２で電話網圏内(電波送受信可)であれば、ステップ３１３に、通常の携帯電話網およびアドホック通信網１４１を利用した通信モードを実施する。実施から一定時間が経過した後、ステップ３１４にて通信が完了しているのかを確認する。通信が完了していれば、そのまま本処理を終了とする。また、通信が完了していなければステップ３１１に戻り、現在の通信位置が電話網圏内であるのかを再度確認する。これは、通信途中に圏外となり、通信が途切れるのを防止するためである。ステップ３１２での検索の結果、電話網圏外(電波送受信不可)であれば、ステップ３１５のアドホックモード継続処理を実施する。アドホックモード継続処理が始まると、アドホック通信機能部２２２より検索信号を生成し、ステップ３１６に、アドホック通信網送受信部２０３より、生成した検索信号を電波としてアドホック通信網圏１４１内に存在する携帯電話に向かって送信する。ステップ３１６以降、前述したステップ３０５以降と同等の処理を、携帯電話網圏内の携帯電話１２０とコネクションが確立するまで続ける。   Next, in step 311, the mobile phone network search using the mobile phone 122 that has permitted ad hoc communication is performed using the conventional function. As a result of the mobile phone network search, if it is within the telephone network range (radio wave transmission / reception is possible) in step 312, a communication mode using the normal mobile phone network and ad hoc communication network 141 is implemented in step 313. After a certain time has passed since the execution, it is confirmed in step 314 whether communication is completed. If the communication is complete, the process is terminated. If the communication is not completed, the process returns to step 311 to confirm again whether the current communication position is within the telephone network area. This is to prevent the communication from being interrupted due to out-of-service communication. If the result of the search in step 312 is outside the telephone network range (cannot transmit / receive radio waves), the ad hoc mode continuation process in step 315 is performed. When the ad hoc mode continuation processing starts, a search signal is generated from the ad hoc communication function unit 222, and in step 316, the mobile phone existing in the ad hoc communication network area 141 using the generated search signal as a radio wave from the ad hoc communication network transceiver unit 203. Send towards. After Step 316, the same processing as Step 305 and after is continued until a connection is established with the mobile phone 120 within the mobile phone network area.

本発明の、携帯電話網の通信エリア拡張方法を適用した携帯電話通信システムの構成例を示す図である。It is a figure which shows the structural example of the mobile telephone communication system to which the communication area expansion method of a mobile telephone network of this invention is applied. 図１中の携帯端末、中継基地局の構成を示す図である。It is a figure which shows the structure of the portable terminal and relay base station in FIG. 図１、図２の実施形態の動作を示すフローチャートである。It is a flowchart which shows operation | movement of embodiment of FIG. 1, FIG. 図１、図２の実施形態の動作を示すフローチャートである。It is a flowchart which shows operation | movement of embodiment of FIG. 1, FIG. 従来の、携帯電話を用いた通信網の例を示す図である。It is a figure which shows the example of the communication network using the conventional mobile telephone.

符号の説明Explanation of symbols

１００，１０１，１０２ 中継基地局
１１０，１１１，１１２ セル
１２０，１２１，１２２，１２３ 携帯電話
１３０，１３１ 電波
１４１，１４２ アドホック通信網
１５１，１５２ 電波
２０１ 電話網送受信部
２０２ 携帯電話通信機能部
２０３ アドホック通信網送受信部
２０４ アドホック通信機能部
２１１ 電話網送受信部
２２１ アドホック通信網送受信部
２２２ アドホック通信機能部
３０１−３２０ ステップ 100, 101, 102 Relay base station 110, 111, 112 Cell 120, 121, 122, 123 Mobile phone 130, 131 Radio 141, 142 Ad hoc communication network 151, 152 Radio 201 Telephone network transmission / reception unit 202 Mobile phone communication function unit 203 Ad hoc Communication network transmission / reception unit 204 Ad hoc communication function unit 211 Telephone network transmission / reception unit 221 Ad hoc communication network transmission / reception unit 222 Ad hoc communication function unit 301-320

Claims (2)

アドホック通信機能を有する第１の携帯電話が携帯電話網の非通信エリアに存在する時、通信エリアにいるアドホック通信機能を有する第２の携帯電話とアドホック通信網内における通信コネクションを確立する、携帯電話網の通信エリア拡張方法。   When the first mobile phone having the ad hoc communication function is present in the non-communication area of the mobile phone network, the mobile phone that establishes a communication connection in the ad hoc communication network with the second mobile phone having the ad hoc communication function in the communication area. A method for expanding the communication area of the telephone network. 第２の携帯電話以外の、アドホック通信機能を有する携帯電話は、自己のアドホック通信網圏内に、アドホック通信機能を有する他の携帯電話が存在するか検索し、前記アドホック通信網圏内にアドホック通信機能を有する携帯電話が存在した場合、該携帯電話が通話中ではなく、かつ該携帯電話のアドホック通信利用許可があれば、該携帯電話との通信コネクションを確立する、請求項１に記載の携帯電話網の通信エリア拡張方法。   A mobile phone having an ad hoc communication function, other than the second mobile phone, searches whether there is another mobile phone having an ad hoc communication function within its own ad hoc communication network range, and the ad hoc communication function is within the ad hoc communication network range. 2. The mobile phone according to claim 1, wherein when there is a mobile phone having a mobile phone, if the mobile phone is not in a call and if the mobile phone has ad hoc communication use permission, a communication connection with the mobile phone is established. Network communication area expansion method.
JP2007126780A 2007-05-11 2007-05-11 Communication area expanding method in portable phone network Pending JP2008283535A (en)

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JP2009267865A (en) * 2008-04-25 2009-11-12 Kyocera Corp Portable radio terminal

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JPH07162935A (en) * 1993-12-08 1995-06-23 Hitachi Ltd Mobile communication system and mobile communication terminal equipment used for the same
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JP2006333449A (en) * 2005-04-26 2006-12-07 Access Co Ltd Radio system, communications terminal, and control method thereof

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JPH07162935A (en) * 1993-12-08 1995-06-23 Hitachi Ltd Mobile communication system and mobile communication terminal equipment used for the same
JP2001186076A (en) * 1999-12-24 2001-07-06 Nec Software Okinawa Ltd Portable terminal and communication transmission system
JP2006333449A (en) * 2005-04-26 2006-12-07 Access Co Ltd Radio system, communications terminal, and control method thereof

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* Cited by examiner, † Cited by third party
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JP2009267865A (en) * 2008-04-25 2009-11-12 Kyocera Corp Portable radio terminal

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