移動体通信のチャネル切替え方式

Channel changeover system for mobile body communication

Abstract

PURPOSE: To improve the service quality by providing a means holding once a talking so as to reduce a forced disconnection rate of a call of a mobile station at the time of revision of the zone of the mobile set when the mobile station in communication changes its radio zone and there is no idle radio channel in the radio zone of a moving destination. CONSTITUTION: Supporse that mobile stations 24, 27 are in communication in radio zones 11, 13 respectively and mobile stations 25, 26 are holding their communication respectively in radio zones 11, 13. When a mobile station 28 uses a control channel to make a call request, the station 27 is in communication in the zone 13, where is no idle radio channel and a call from the station 28 becomes a call loss. Suppose that the mobile station 24 making communication moves from the radio zone to the zone 13, then the station 27 is in communication in the zone 13, there is no idle radio channel an the station 24 connects to a holding channel. The radio channel having been used by the station 24 in the zone 11 is released, The station 24 is holding till an idle radio channel takes place in the zone 13. An idle radio channel is caused in the zone 11 because the station 24 moves to the zone 13. The station 23 informs it to the station 25 and switches the holding channel into an idle channel. COPYRIGHT: (C)1994,JPO&Japio
(57)【要約】 【目的】 通信中の移動局が移動しゾーン変更を行なう 際、移動先無線ゾーンに無線チャネルの空きがないとき 強制切断される率を減少させ、サービス品質を向上させ た移動体通信のチャネル切替え方式を得ることを目的と する。 【構成】 通信サービスエリアを複数の無線ゾーンに分 割し、個々のゾーンに配置された無線チャネルを使用し て通信を行う移動体通信において、通信中の移動局が移 動しゾーン変更を行う際、移動先のゾーンに割り当てら れている無線チャネルが全て使用中で空きがないとき該 移動局の通信の送受を一旦停止して保留にする手段と、 空きが生じたとき移動先のゾーンで生起する呼に優先し て、空き無線チャネルに該移動局を接続する手段とを備 えたことを特徴とする。

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