JP3396373B2 - Mobile communication system - Google Patents
Mobile communication systemInfo
- Publication number
- JP3396373B2 JP3396373B2 JP16458796A JP16458796A JP3396373B2 JP 3396373 B2 JP3396373 B2 JP 3396373B2 JP 16458796 A JP16458796 A JP 16458796A JP 16458796 A JP16458796 A JP 16458796A JP 3396373 B2 JP3396373 B2 JP 3396373B2
- Authority
- JP
- Japan
- Prior art keywords
- signal
- communication system
- mobile communication
- area
- 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.)
- Expired - Fee Related
Links
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、広さや一斉呼び
出しチャネルの数が異なる複数の無線エリアから構成さ
れる移動通信システムに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mobile communication system composed of a plurality of wireless areas having different sizes and different numbers of paging channels.
【０００２】[0002]
【従来の技術】移動通信システムでは主として屋外に無
線エリアを構成しており、フェージングの影響等で着信
時の基地局からの呼び出し信号や移動局からの応答信号
が相手局に届かない場合があるため、網側では着信に対
する移動局からの応答がない場合には一定の時間間隔に
おいて呼び出し信号の再送を行っている。このときの再
送回数は、従来、無線エリアの広さや一斉呼び出しチャ
ネルの数、一斉呼び出しチャネルのトラヒック等によら
ず一定であった。2. Description of the Related Art In a mobile communication system, a radio area is mainly constructed outdoors, and a calling signal from a base station or a response signal from a mobile station at the time of an incoming call may not reach a partner station due to the influence of fading. Therefore, when there is no response from the mobile station to the incoming call, the network side retransmits the call signal at regular time intervals. The number of retransmissions at this time has been constant regardless of the size of the wireless area, the number of paging channels, the traffic of paging channels, and the like.
【０００３】[0003]
【発明が解決しようとする課題】無線エリアの種類は多
様化しており、地下街などの限られた狭い範囲をカバー
する無線エリアでは、フェージングや干渉などの影響が
少なく、基地局からの呼び出し信号や移動局からの応答
信号が相手局に届かない場合がまれであるため、移動局
からの応答がない場合には移動局が該当エリア内に存在
していないと判断することができる。しかし、地上の広
い範囲をカバーする無線エリアでは、呼び出し信号やそ
の応答信号が受信できない場合にも、必ずしも該当する
移動局が該当エリアに存在していないとは判断できず、
無線区間において信号が消失した場合を考慮して呼び出
し信号の再送を行う必要がある。The types of wireless areas are diversifying, and in a wireless area covering a limited and narrow area such as an underground shopping area, there is little influence of fading and interference, and a call signal from a base station or Since the response signal from the mobile station rarely reaches the partner station, it can be determined that the mobile station does not exist in the corresponding area when there is no response from the mobile station. However, in a wireless area covering a wide area on the ground, even if the call signal or its response signal cannot be received, it cannot always be determined that the corresponding mobile station does not exist in the corresponding area.
It is necessary to retransmit the call signal in consideration of the case where the signal is lost in the wireless section.
【０００４】しかし、これらの無線エリアが混在する移
動通信システムにおいて、呼び出し信号の再送回数を一
律に決定すると、再送の必要のない無線エリアでは一斉
呼び出しチャネルのトラヒックを圧迫する結果となり、
また再送の必要なエリアでは、呼び出し信号やその応答
信号がフェージングの影響等により受信できない場合が
起こりうる。However, in a mobile communication system in which these radio areas coexist, if the number of times a call signal is retransmitted is uniformly determined, the traffic of the paging channel will be squeezed in a radio area that does not require retransmission.
In addition, in the area where retransmission is required, there may occur a case where the calling signal and its response signal cannot be received due to the influence of fading or the like.
【０００５】本発明の目的は、これら性質の異なる無線
エリアが混在する場合に、無線エリア毎に呼び出し信号
の再送回数を制御することによって、一斉呼び出しチャ
ネルのトラヒックを適切に保ち、さらに十分な呼接続率
を確保することができる移動通信システムを提供するこ
とにある。An object of the present invention is to control the number of times a call signal is retransmitted for each radio area when radio areas having different characteristics are mixed, so that the traffic of the paging channel can be appropriately maintained and a sufficient call can be made. It is to provide a mobile communication system that can secure a connection rate.
【０００６】[0006]
【課題を解決するための手段】上記目的を達成するた
め、請求項１の発明は、複数の無線エリアを有し、前記
各無線エリア内に存在する移動局に対する着信時に、呼
び出し信号に対する該当する移動局からの応答がない場
合に、呼び出し信号を再送する移動通信システムにおい
て、前記呼び出し信号の再送回数を無線エリア毎に、広
いエリアほど多くなるように決定する手段を具えたこと
を特徴とする。In order to achieve the above object, the invention of claim 1 has a plurality of wireless areas and corresponds to a call signal when a mobile station existing in each of the wireless areas receives a call. In a mobile communication system that retransmits a call signal when there is no response from a mobile station, the mobile communication system further comprises means for determining the number of times the call signal is retransmitted, for each radio area, such that the larger the area, the greater the number of retransmissions. .
【０００７】また、請求項２の発明は、請求項１におい
て、無線エリア毎の一斉呼び出しチャネルのトラヒック
を監視する監視手段と、前記監視手段によって得られた
前記一斉呼び出しチャネルのトラヒックがしきい値を越
えているときは前記呼び出し信号の再送を制限する手段
とをさらに有することを特徴とする。According to a second aspect of the present invention, in the first aspect, the monitoring means for monitoring the traffic of the paging channel for each wireless area, and the traffic of the paging channel obtained by the monitoring means are threshold values. And a means for limiting the retransmission of the calling signal when the number exceeds the limit.
【０００８】[0008]
【発明の実施の形態】請求項１に記載の発明は、無線エ
リアを管理する網側装置（基地局または交換局）におい
て、各無線エリアの広さや一斉呼び出しチャネルの数に
応じた呼び出し信号の再送回数を無線エリア毎にあらか
じめ設定しておき、それに従って呼び出し信号の再送制
御を行う。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the invention according to claim 1, in a network side device (a base station or a switching center) that manages a wireless area, a call signal corresponding to the size of each wireless area and the number of paging channels is generated. The number of retransmissions is set in advance for each wireless area, and the call signal retransmission control is performed according to the preset number.
【０００９】請求項２に記載の発明は、無線エリアを管
理する網側装置（基地局または交換局）において、各無
線エリアの一斉呼び出しチャネルのトラヒックを監視
し、その状況に応じて呼び出し信号の再送回数を変更す
る。According to the second aspect of the present invention, in the network side device (base station or switching center) that manages the wireless area, the traffic of the paging channel of each wireless area is monitored and the calling signal of the calling signal is sent according to the situation. Change the number of resends.
【００１０】[0010]
【実施例】図１に示すように、１つの網側装置３０の配
下に基地局１および基地局２があり、基地局１は屋外の
広い無線エリア１０をカバーし、基地局２は屋内の狭い
無線エリア２０をカバーしている。網側装置３０は、再
送回数決定回路３１と、一斉呼び出しチャネルのトラヒ
ックを監視するトラヒック監視装置３２と、図２，図３
の如き制御を実行する再送回数制御装置３３とを有す
る。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 1, there is a base station 1 and a base station 2 under the control of one network side device 30, the base station 1 covers a wide wireless area 10 outdoors, and the base station 2 is indoors. It covers a small wireless area 20. The network side device 30 includes a retransmission number determination circuit 31, a traffic monitoring device 32 for monitoring the traffic of a paging channel, and FIGS.
And a retransmission number control device 33 that executes such control.
【００１１】上記請求項１によれば、あらかじめ網側装
置３０の再送回数決定回路３１において無線エリア１０
の呼び出し信号再送回数を３に設定し、エリア２０の呼
び出し信号再送回数を１に設定する。図２に示すよう
に、網側装置の再送回数制御装置３３は移動局からの応
答信号がない場合、タイマ開始から所定時間後にタイム
アウトすると、呼び出し信号の再送を行い、これを設定
された回数だけ行う。According to the above claim 1, the wireless area 10 is previously set in the retransmission number determining circuit 31 of the network side device 30.
The number of times the call signal is retransmitted is set to 3, and the number of times the call signal is retransmitted in the area 20 is set to 1. As shown in FIG. 2, when there is no response signal from the mobile station, the retransmission number control device 33 of the network side device retransmits the call signal when a timeout occurs after a predetermined time from the start of the timer, and this is repeated for a set number of times. To do.
【００１２】上記請求項２によれば、網側装置のトラヒ
ック監視装置３２において各無線エリアの一斉呼び出し
チャネルのトラヒックを判断し、図３に示すように、一
斉呼び出しチャネルのトラヒックがしきい値を超えてい
れば、該無線エリアへの再送による呼び出し信号の送信
を停止する。ただし、一斉呼び出しチャネルのトラヒッ
クがしきい値を超える場合にも、移動局に対する１度目
の呼び出し信号は送信する。このとき、網側装置におい
ては上記同様タイムアウトすると、呼び出し信号の再送
を行い、これを設定された回数だけ行う。According to the above-mentioned claim 2, the traffic monitoring device 32 of the network side device judges the traffic of the paging channel of each wireless area, and as shown in FIG. If it exceeds, the transmission of the call signal by the retransmission to the wireless area is stopped. However, even when the traffic of the paging channel exceeds the threshold value, the first paging signal to the mobile station is transmitted. At this time, in the network side device, when the time-out occurs similarly to the above, the call signal is retransmitted, and this is performed for the set number of times.
【００１３】[0013]
【発明の効果】移動通信システムにおいて屋内等に小規
模な無線エリアを構成した場合には、屋外のようなフェ
ージング等の影響も少ないため、呼び出し信号やその応
答信号は必ず相手局に届くと考えられ、呼び出し信号の
再送を行う必要がない。呼び出し信号の再送を屋外の無
線エリアと同様に行えば、呼び出し移動局が該当エリア
に存在しない場合や移動局の電源が切れている場合に
は、一斉呼び出しチャネルを無駄に圧迫する結果とな
る。EFFECTS OF THE INVENTION When a small wireless area is constructed indoors in a mobile communication system, it is considered that the calling signal and its response signal will always reach the partner station because the effect of fading or the like in the outdoors is small. Therefore, it is not necessary to resend the call signal. If the paging signal is retransmitted in the same manner as in the outdoor wireless area, the paging channel is unnecessarily pressed when the paging mobile station is not present in the area or when the mobile station is powered off.
【００１４】本発明により、無線エリア毎に呼び出し信
号の再送回数の制御を行うことによって、一斉呼び出し
チャネルを圧迫することなく、適切な回数の呼び出し信
号の再送を行うことができる。また、屋内の無線エリア
等では一斉呼び出しチャネルを少なく設計することがで
き、無線周波数の効率的な利用にもつながる。According to the present invention, by controlling the number of times the call signal is retransmitted for each radio area, the call signal can be retransmitted an appropriate number of times without overwhelming the simultaneous call channel. In addition, it is possible to design a small number of paging channels in an indoor wireless area or the like, which leads to efficient use of wireless frequencies.
【図１】屋内と屋外に無線エリアを構成した場合のシス
テムの構成図である。FIG. 1 is a configuration diagram of a system when a wireless area is configured indoors and outdoors.
【図２】第１の実施例のシーケンス図である。FIG. 2 is a sequence diagram of the first embodiment.
【図３】第２の実施例のシーケンス図である。FIG. 3 is a sequence diagram of a second embodiment.
１，２ 基地局 ３０ 網側装置 ３１ 再送回数決定回数 ３２ トラヒック監視装置 ３３ 再送回数制御装置 1, 2 base stations 30 Network side device 31 Number of retransmissions determined 32 Traffic monitoring device 33 Retransmission number control device
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平５−328431（ＪＰ，Ａ) 特開 平７−222251（ＪＰ，Ａ) 特開 平５−284099（ＪＰ，Ａ) 特開 平２−42846（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) H04Q 7/00 - 7/38 H04B 7/24 - 7/26 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-5-328431 (JP, A) JP-A-7-222251 (JP, A) JP-A-5-284099 (JP, A) JP-A-2- 42846 (JP, A) (58) Fields surveyed (Int.Cl. 7 , DB name) H04Q 7/ 00-7/38 H04B 7 /24-7/26
Claims (2)
リア内に存在する移動局に対する着信時に、呼び出し信
号に対する該当する移動局からの応答がない場合に、呼
び出し信号を再送する移動通信システムにおいて、 前記呼び出し信号の再送回数を無線エリア毎に、広いエ
リアほど多くなるように決定する手段を具えたことを特
徴とする移動通信システム。1. A mobile communication system having a plurality of wireless areas and retransmitting a calling signal when there is no response from the corresponding mobile station to the calling signal when receiving a call to a mobile station existing in each of the wireless areas. In the above, the number of times the call signal is retransmitted is set to be wide for each wireless area.
A mobile communication system comprising means for deciding to increase the number of rear devices.
視する監視手段と、 前記監視手段によって得られた前記一斉呼び出しチャネ
ルのトラヒックがしきい値を越えているときは前記呼び
出し信号の再送を制限する手段とをさらに有することを
特徴とする移動通信システム。2. The monitoring means for monitoring the traffic of a paging channel for each wireless area according to claim 1, and the paging channel obtained by the monitoring means .
If the traffic of the traffic exceeds the threshold,
A mobile communication system further comprising: means for limiting retransmission of an outgoing signal .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16458796A JP3396373B2 (en) | 1996-06-25 | 1996-06-25 | Mobile communication system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16458796A JP3396373B2 (en) | 1996-06-25 | 1996-06-25 | Mobile communication system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH1013331A JPH1013331A (en) | 1998-01-16 |
| JP3396373B2 true JP3396373B2 (en) | 2003-04-14 |
Family
ID=15796018
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16458796A Expired - Fee Related JP3396373B2 (en) | 1996-06-25 | 1996-06-25 | Mobile communication system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3396373B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6115607A (en) * | 1998-01-30 | 2000-09-05 | Qualcomm Incorporated | Method and apparatus for reducing messaging traffic in a wireless communication system |
| KR100875419B1 (en) | 2004-06-25 | 2008-12-22 | 엘지전자 주식회사 | Validation method of idle mode terminal in broadband wireless access system |
| KR100993648B1 (en) | 2005-07-08 | 2010-11-10 | 후지쯔 가부시끼가이샤 | Transmitting apparatus, receiving apparatus and information communication method |
| WO2007035061A1 (en) * | 2005-09-22 | 2007-03-29 | Samsung Electronics Co., Ltd. | Method for transmitting/responding paging information for dual-mode access terminal and device and method for network switching according to network indication |
-
1996
- 1996-06-25 JP JP16458796A patent/JP3396373B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH1013331A (en) | 1998-01-16 |
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