JPS61171269A - Channel switching system - Google Patents
Channel switching systemInfo
- Publication number
- JPS61171269A JPS61171269A JP60012161A JP1216185A JPS61171269A JP S61171269 A JPS61171269 A JP S61171269A JP 60012161 A JP60012161 A JP 60012161A JP 1216185 A JP1216185 A JP 1216185A JP S61171269 A JPS61171269 A JP S61171269A
- Authority
- JP
- Japan
- Prior art keywords
- channel
- call
- line
- mobile device
- wireless
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/42—Systems providing special services or facilities to subscribers
- H04M3/56—Arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は移動体電話システム等における通話路切替方式
の改良に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an improvement in a call path switching method in a mobile telephone system or the like.
船舶、或いは自動車の如き移動体に設けた電話装置（以
後移動機と称する）は、それぞれの海域或いは地域を通
信範囲とする無線装置との間の無線回線を経由して、他
の電話装置との間に通話路を設定し、該通話路を介して
通話を行う。かかる移動機が成る通信範囲から他の通信
範囲へ移行する場合に、現在通信中の無線回線を移動先
通信範囲内の無線回線に切替え、切替後の無線回線を経
由する通話路を介して通話を継続する必要がある。A telephone device installed on a mobile body such as a ship or a car (hereinafter referred to as a mobile device) can communicate with other telephone devices via a wireless link between the wireless device and the wireless device whose communication range is the respective sea area or area. A communication path is set between the two parties, and the communication is carried out via the communication path. When moving from the communication range of such a mobile device to another communication range, the currently communicating wireless line is switched to a wireless line within the destination communication range, and a call is made via the communication path via the switched wireless line. It is necessary to continue.
かかる通話路の切替えの際も、継続中の通話に極力影響
を及ぼさぬ対策を講することが強く要望される。Even when switching such call paths, it is strongly desired to take measures to minimize the impact on ongoing calls.
第２図はこの種の移動体電話システムにおける従来ある
通話路切替方式の一例を示す図である。FIG. 2 is a diagram showing an example of a conventional call path switching system in this type of mobile telephone system.
第２図において、自動交換機１のネットワーク１１には
、それぞれ異なる通信範囲を有する無線装置２−１等が
通話回線３−１等を経由して収容されている。全無線装
置２−１の通信範囲内にある移動機４が、自動交換機１
に収容されている一般の加入者５との間で、無線回線６
−１、通話回線３−１およびネットワーク１１内の通話
路ｐｌを含む通話路を経由して通話中とする。かかる状
態で、移動機４が無線装置２−１の通信範囲から他の無
線装置２−２の通信範囲に移行すると、無線装置２−１
は無線回線６−１の受信レベルが所定値以下に低下する
ことにより移行を検出し、通話回線３−１を経由して自
動交換機１に切替要求信号を伝達する。切替要求信号を
受信した自動交換機１は、無線装置２−１の通信範囲に
隣接する通信範囲を有する無線装置！２−２等にレベル
監視要求信号を、通話回線３−２等を経由して伝達する
。レベル監視要求信号を受信した無線装置２−２等は、
無線回線６−１の受信レベルを監視し、監視結果を自動
交換機１に報告する。自動交換機ｌは、各無線装置２−
２等から報告された受信レベルを比較し、最大受信レベ
ルを報告した無線装置（例えば２−２）の有する通信範
囲を移行先と判定し、無線装置２−２を経由する空き無
線回線６−２および通話回線３−２を選択する。以後自
動交換機１は、無線回線６−１から無線回線６−２への
切替信号を、無線装置２−１を経由して移動機４に伝達
する。切替信号を受信した移動機４は、通話中の無線口
１６−１を無線回線６−２に切替える。次に自動交換機
工は、ネットワークＩｌ内の通話路ｐ１を解放して通話
路ｐ２を設定し、加入者５と通話回線３−２とを接続す
る。以上により移動機４と加入者５とは、新たに設定さ
れた無線回線６−２、通話回線３−２および通話路ｐ２
を含む通話路を経由して、通話を続行する。In FIG. 2, a network 11 of an automatic exchange 1 accommodates wireless devices 2-1 and the like having different communication ranges via communication lines 3-1 and the like. The mobile device 4 within the communication range of all the wireless devices 2-1 is connected to the automatic exchange 1.
A wireless line 6 is connected to a general subscriber 5 accommodated in
-1, a call is in progress via a call path including the call line 3-1 and the call path pl within the network 11. In this state, when the mobile device 4 moves from the communication range of the wireless device 2-1 to the communication range of another wireless device 2-2, the wireless device 2-1
detects the transition when the reception level of the wireless line 6-1 falls below a predetermined value, and transmits a switching request signal to the automatic exchange 1 via the telephone line 3-1. The automatic exchange 1 that received the switching request signal is a wireless device whose communication range is adjacent to that of the wireless device 2-1! 2-2 etc., the level monitoring request signal is transmitted via the telephone line 3-2 etc. The wireless device 2-2, etc. that received the level monitoring request signal,
The reception level of the wireless line 6-1 is monitored and the monitoring result is reported to the automatic exchange 1. The automatic exchange 1 is connected to each wireless device 2-
The reception levels reported from the second and other devices are compared, and the communication range of the wireless device (for example, 2-2) that has reported the maximum reception level is determined to be the transfer destination, and the vacant wireless line 6- is routed through the wireless device 2-2. 2 and call line 3-2. Thereafter, the automatic exchange 1 transmits a switching signal from the wireless line 6-1 to the wireless line 6-2 to the mobile device 4 via the wireless device 2-1. The mobile device 4 that has received the switching signal switches the wireless port 16-1, which is currently in use, to the wireless line 6-2. Next, the automatic switch operator releases the communication path p1 within the network I1, sets up a communication path p2, and connects the subscriber 5 to the communication line 3-2. As described above, the mobile device 4 and the subscriber 5 are connected to the newly set wireless line 6-2, call line 3-2, and call path p2.
Continuing the call via the call path that includes.
以上の説明から明らかな如く、従来ある通話路切替方式
においては、移動機４が無線装置２−１の通信範囲から
無線装置２−２の通信範囲へ移行する際に、無線回線６
−１から無線回線６−２への切替えと、自動交換機１内
の通話路ｐ１からｐ２への切替えとを連続して実行して
いる。従って両切替時期の相違する間、通話路が途絶え
ることとなり、通話の継続に支障を来す恐れがあった。As is clear from the above description, in the conventional call path switching system, when the mobile device 4 moves from the communication range of the wireless device 2-1 to the communication range of the wireless device 2-2, the wireless line 6
-1 to the wireless line 6-2, and switching from the communication path p1 to p2 in the automatic exchange 1 are successively executed. Therefore, while the two switching timings are different, the communication path will be interrupted, which may hinder the continuation of the communication.
本発明は、下記の手段を講することにより、前記問題点
を解決する。The present invention solves the above problems by taking the following measures.
即ち本発明においては、通話中の通話路を自動交換機内
に設けられた三者通話路装置を介して再 Ｊ設
定する。That is, in the present invention, the current communication path is re-established via a three-party communication path device provided within the automatic exchange.
次に該三者通話路装置を介して新たな通話路を設定する
。Next, a new communication path is set up via the three-party communication path device.
以後既存の通話路から新たな通話路へ移行する。Thereafter, the existing communication path will be transferred to a new communication path.
即ち本発明によれば、通話中の通話路が解放される以前
に、既存の通話路と新たな通話路とが同一三者通話路装
置を経由して接続され、何れの通話路を経由しても通話
可能な状態となる。既存の通話路から新たな通話路へ通
話が移行した後、既存の通話路を解放することにより、
ｗ１続中の通話が円滑に通話路切替えが行われる。That is, according to the present invention, before the current communication path is released, the existing communication path and the new communication path are connected via the same three-party communication path device, and which communication path is used is connected. You can still make calls. After a call is transferred from an existing call path to a new call path, by releasing the existing call path,
A call path that is currently on w1 is smoothly switched.
以下、本発明の一実施例を図面により説明する。 An embodiment of the present invention will be described below with reference to the drawings.
第１図は本発明の一実施例による通話路切替方式を示す
図である。なお、全図を通じて同一符号は同一対象物を
示す。FIG. 1 is a diagram showing a communication path switching system according to an embodiment of the present invention. Note that the same reference numerals indicate the same objects throughout the figures.
第１図においては、自動交換機１内のネットワーク１１
に三者通話路装置１２が接続されている。In FIG. 1, the network 11 in the automatic exchange 1
A three-party communication path device 12 is connected to.
第１図において、無線装置２−１の通信範囲内にある移
動機４が、自動交換機１に収容されている加入者５との
間で、無線図、％１６−１．通話回線３−１およびネッ
トワーク１１内の通話路ｐ１を含む通話路を経由して通
話中とする。かかる状態で、移動機４が無線装置２−１
の通信範囲から他の無線装置２−２の通信範囲に移行す
ると、無線装置２−１は前述の如（受信レベルの低下に
より移行を検出し、自動交換機１に切替要求信号を伝達
する。切替要求信号を受信した自動交換機１は前述の如
く隣接する通信範囲を有する無線装置２−２等にレベル
監視要求信号を伝達し、無線装置２−２等から返送され
る無線回線６−１の受信レベルの監視結果に基づき、移
行先通信範囲を有する無線装置（例えば２−２）を判定
し、無線装置２−２を経由する空き無線回線６−２およ
び通話回線３−２を選択する。In FIG. 1, a mobile device 4 within the communication range of a wireless device 2-1 communicates with a subscriber 5 accommodated in an automatic exchange 1 in a wireless diagram %16-1. It is assumed that a call is in progress via a call path including the call line 3-1 and the call path p1 within the network 11. In this state, the mobile device 4 is connected to the wireless device 2-1.
When the wireless device 2-1 shifts from the communication range of the other wireless device 2-2 to the communication range of the other wireless device 2-2, the wireless device 2-1 detects the transition due to a decrease in the reception level and transmits a switching request signal to the automatic exchange 1. The automatic exchange 1 that has received the request signal transmits the level monitoring request signal to the wireless device 2-2, etc. that has an adjacent communication range as described above, and receives the level monitoring request signal from the wireless device 2-2, etc. on the wireless line 6-1. Based on the level monitoring result, a wireless device (for example, 2-2) having a transfer destination communication range is determined, and an empty wireless line 6-2 and a call line 3-2 via the wireless device 2-2 are selected.
次に自動交換機１は、ネットワーク１１内に通話路ｐ２
およびｐ３を設定して通話路ｐ１を解放し、加入者５と
移動機４との間に設定されている通話路を三者通話路装
置１２を経由させる。更に自動交換機１は、ネットワー
ク１１内に通話路ｐ４を設定して通０話回線３−２を三
者通話路装置１２に接続する。かかる状態では、移動機
４は無線回線６−１および６−２の何れを経由しても、
三者通話路装置１２を介して加入者５と通話が可能とな
る。かかる状態で自動交換機ｌは無線装置２−１を経由
して移動機４に、無線回線６−１から無線回線６−２へ
の切替信号を伝達する。切替信号を受信した移動機４は
、通話中の無線回線６−１を無線回線６−２に切替える
。以後移動機４と加入者５とは、無線回線６−２、通話
回線３−２、通話路ｐ４、三者通話路装置１２および通
話路ｐ２を含む新たな通話路により、通話を継続する。Next, the automatic exchange 1 connects the communication path p2 within the network 11.
and p3, the communication path p1 is released, and the communication path set between the subscriber 5 and the mobile device 4 is routed through the three-party communication path device 12. Further, the automatic exchange 1 sets a communication path p4 within the network 11 and connects the zero-talk line 3-2 to the three-party communication path device 12. In such a state, the mobile device 4 connects via either of the wireless lines 6-1 and 6-2.
It becomes possible to communicate with the subscriber 5 via the three-party communication path device 12. In this state, the automatic exchange 1 transmits a switching signal from the wireless line 6-1 to the wireless line 6-2 to the mobile device 4 via the wireless device 2-1. The mobile device 4 that has received the switching signal switches the wireless line 6-1, which is currently in use, to the wireless line 6-2. Thereafter, the mobile device 4 and the subscriber 5 continue to communicate through a new communication path including the wireless line 6-2, the communication line 3-2, the communication path p4, the three-party communication path device 12, and the communication path p2.
該切替処理が終了した後は、自動交換機１はネットワー
ク１１内の通話路ｐ３および通話回線３−１を解放し、
既存の通話路を解放する。その後通話路ｐ２およびｐ４
を解放し、通話路ｐ５によって加入者５と新通話回線３
−２とを接続し、三者通話路装置１２を切離す。After the switching process is completed, the automatic exchange 1 releases the communication path p3 and the communication line 3-1 in the network 11,
Free up existing communication paths. Then the communication paths p2 and p4
and connect subscriber 5 to new call line 3 via call path p5.
-2 and disconnect the three-party communication path device 12.
以上の説明から明らかな如く、本実施例によれば、自動
交換機１は既存の通話路を一旦三者通話路装置１２を経
由させた後、該三者通話路装置１２を介して新たな通話
路を設定し、移動機４が無線回線６−１から無線回線６
−２に切替えさせる。As is clear from the above description, according to the present embodiment, the automatic exchange 1 once routes the existing call path through the three-party call path device 12, and then transfers the new call via the three-party call path device 12. The mobile device 4 connects the wireless line 6-1 to the wireless line 6.
-2.
その結果移動機４が無線回線６−１から無線回線６−２
への切替時間以外に継続中の通話が途絶えることは無く
なり、途絶時間は大幅に短縮される。As a result, the mobile device 4 connects from the wireless line 6-1 to the wireless line 6-2.
Ongoing calls will not be interrupted other than during the switching time, and the interruption time will be significantly shortened.
なお、第１図はあく迄本発明の一実施例に過ぎず、例え
ば自動交換機１の構成は図示されるものに限定されるこ
とは無く、他に幾多の変形が考慮されるが、何れの場合
にも本発明の効果は変わらない。また本発明の対象は移
動体通信システムに限定されることは無く、例えば通話
中の回線の再配置を動的に行うことにより、回線の有効
利用を図る電話網に適用する等、他に幾多の変形が考慮
されるが、何れの場合にも本発明の効果は変わらない。It should be noted that FIG. 1 is merely one embodiment of the present invention, and for example, the configuration of the automatic exchange 1 is not limited to that shown in the figure, and many other modifications may be considered. In this case, the effects of the present invention remain the same. Furthermore, the object of the present invention is not limited to mobile communication systems, and can be applied to many other applications, such as a telephone network that aims to make effective use of lines by dynamically rearranging lines during a call. Although the following modifications are considered, the effects of the present invention remain unchanged in either case.
以上、本発明によれば、通話中の通話路が解放される以
前に、既存の通話路と、新たな通話路と Ｊが
同一三者通話路装置を経由して接続され、何れの通話路
を経由しても通話可能な状態となった状態で既存の通話
路から新たな通話路に通話が移行される為、継続中の通
話に対する途絶時間が大幅に短縮される。As described above, according to the present invention, before the current communication path is released, the existing communication path, the new communication path, and J are connected via the same three-party communication path device, and any Since the call is transferred from the existing call route to the new call route in a state where the call can be made even if the call is routed through the route, the interruption time for the ongoing call is greatly reduced.
第１図は本発明の一実施例による通話路切替方式を示す
図、第２図は従来ある通話路切替方式の一例を示す図で
ある。
図において、ｌは自動交換機、２−１および２−２は無
線装置、３−１および３−２は通話回線、４は移動機、
５は加入者、６−１および６−２は無線回線、１１はネ
ットワーク、１２は三者通話路装置、ｐｌ乃至ｐ５はネ
ットワーク内の通話路、を示す。
拳 １ に
拳 ２ 酊FIG. 1 is a diagram showing a communication path switching system according to an embodiment of the present invention, and FIG. 2 is a diagram showing an example of a conventional communication path switching system. In the figure, l is an automatic switchboard, 2-1 and 2-2 are wireless devices, 3-1 and 3-2 are telephone lines, 4 is a mobile device,
5 is a subscriber, 6-1 and 6-2 are wireless lines, 11 is a network, 12 is a three-party communication path device, and pl to p5 are communication paths within the network. fist 1 fist 2 drunkenness
Claims (1)
の通話路を三者通話路装置を介して再設定すると共に、
該三者通話路装置を介して新たな通話路を設定した後、
既存の通話路から新たな通話路へ移行することを特徴と
する通話路切替方式。In an automatic switchboard that switches the call route during a call, the call route during the call is reset via a three-party call route device, and
After setting up a new communication path through the three-party communication path device,
A call route switching method characterized by transitioning from an existing call route to a new call route.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60012161A JPS61171269A (en) | 1985-01-25 | 1985-01-25 | Channel switching system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60012161A JPS61171269A (en) | 1985-01-25 | 1985-01-25 | Channel switching system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61171269A true JPS61171269A (en) | 1986-08-01 |
| JPH0523531B2 JPH0523531B2 (en) | 1993-04-05 |
Family
ID=11797722
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60012161A Granted JPS61171269A (en) | 1985-01-25 | 1985-01-25 | Channel switching system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61171269A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62199132A (en) * | 1986-02-27 | 1987-09-02 | Nippon Telegr & Teleph Corp <Ntt> | Channel changeover system during communication |
| JPS63214029A (en) * | 1987-03-02 | 1988-09-06 | Nippon Telegr & Teleph Corp <Ntt> | Channel switching system during communication |
| JPH01190036A (en) * | 1988-01-25 | 1989-07-31 | Fujitsu Ltd | Channel switching system during busy state for mobile body communication |
| JPH02121418A (en) * | 1988-10-31 | 1990-05-09 | Fujitsu Ltd | Zone control system for mobile body communication |
| JPH02237229A (en) * | 1989-03-10 | 1990-09-19 | Nippon Telegr & Teleph Corp <Ntt> | Data delay system in mobile communication |
| USRE36017E (en) * | 1988-02-29 | 1998-12-29 | Telefonaktiebolaget Lm Ericsson | Cellular digital mobile radio system and method of transmitting information in a digital cellular mobile radio system |
| USRE36079E (en) * | 1988-06-14 | 1999-02-02 | Telefonaktiebolaget Lm Ericsson | Handover method for mobile radio system |
| JP2003015408A (en) * | 2001-07-02 | 2003-01-17 | Canon Inc | Image forming device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59103457A (en) * | 1982-12-03 | 1984-06-14 | Nippon Telegr & Teleph Corp <Ntt> | Attendant board system |
| JPS59169236A (en) * | 1983-03-16 | 1984-09-25 | Hitachi Ltd | Conference telephone system for exchange of traveling object |
-
1985
- 1985-01-25 JP JP60012161A patent/JPS61171269A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59103457A (en) * | 1982-12-03 | 1984-06-14 | Nippon Telegr & Teleph Corp <Ntt> | Attendant board system |
| JPS59169236A (en) * | 1983-03-16 | 1984-09-25 | Hitachi Ltd | Conference telephone system for exchange of traveling object |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62199132A (en) * | 1986-02-27 | 1987-09-02 | Nippon Telegr & Teleph Corp <Ntt> | Channel changeover system during communication |
| JPS63214029A (en) * | 1987-03-02 | 1988-09-06 | Nippon Telegr & Teleph Corp <Ntt> | Channel switching system during communication |
| JPH01190036A (en) * | 1988-01-25 | 1989-07-31 | Fujitsu Ltd | Channel switching system during busy state for mobile body communication |
| US4975939A (en) * | 1988-01-25 | 1990-12-04 | Fujitsu Limited | Channel changing system |
| USRE36017E (en) * | 1988-02-29 | 1998-12-29 | Telefonaktiebolaget Lm Ericsson | Cellular digital mobile radio system and method of transmitting information in a digital cellular mobile radio system |
| USRE36079E (en) * | 1988-06-14 | 1999-02-02 | Telefonaktiebolaget Lm Ericsson | Handover method for mobile radio system |
| USRE36078E (en) * | 1988-06-14 | 1999-02-02 | Telefonaktiebolaget Lm Ericsson | Handover method for mobile radio system |
| USRE37685E1 (en) | 1988-06-14 | 2002-04-30 | Telefonaktiebolaget Lm Ericsson (Publ) | Handover method for mobile radio system |
| USRE37787E1 (en) | 1988-06-14 | 2002-07-09 | Telefonaktiebolaget Lm Ericsson (Publ) | Handover method for mobile radio system |
| JPH02121418A (en) * | 1988-10-31 | 1990-05-09 | Fujitsu Ltd | Zone control system for mobile body communication |
| JPH02237229A (en) * | 1989-03-10 | 1990-09-19 | Nippon Telegr & Teleph Corp <Ntt> | Data delay system in mobile communication |
| JP2003015408A (en) * | 2001-07-02 | 2003-01-17 | Canon Inc | Image forming device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0523531B2 (en) | 1993-04-05 |
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Legal Events
| Date | Code | Title | Description |
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| LAPS | Cancellation because of no payment of annual fees |