JP4653585B2 - サービス陰影地域における同期化のためのpttサービスシステム及び方法 - Google Patents
サービス陰影地域における同期化のためのpttサービスシステム及び方法 Download PDFInfo
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- JP4653585B2 JP4653585B2 JP2005217994A JP2005217994A JP4653585B2 JP 4653585 B2 JP4653585 B2 JP 4653585B2 JP 2005217994 A JP2005217994 A JP 2005217994A JP 2005217994 A JP2005217994 A JP 2005217994A JP 4653585 B2 JP4653585 B2 JP 4653585B2
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Description
また、前記PTTサーバーは、発言権を要求したPTT端末に発言権を承認するメッセージ(Floor Grant)を送信し、他のPTT端末に発言権を獲得した端末のIDを通知するメッセージ(Floor Taken)を送信する。
(項目1)
RTP(Real−time Transport Protocol)パケットの受信中にRTCP(RTP Control Protocol)パケットを送信し、前記RTPパケット又はRTCPパケットが所定時間受信されないと、セッション(sesssion)を終了する1つ以上のPTT端末と、
前記PTT端末から送信されるRTCPパケットが所定時間受信されないと、該当PTT端末とのセッションを終了し、前記RTPパケットが所定時間受信されないと、発言権遊休状態に転換するPTTサーバーと、
から構成されることを特徴とするサービス陰影地域における同期化のためのPTTサービスシステム。
(項目2)
前記PTT端末が送信するRTCPパケットが、
活動報告パケットであることを特徴とする項目1に記載のサービス陰影地域における同期化のためのPTTサービスシステム。
(項目3)
前記PTT端末に受信されるRTCPパケットが、
発言権遊休パケットであることを特徴とする項目1に記載のサービス陰影地域における同期化のためのPTTサービスシステム。
(項目4)
1つ以上の端末とサーバーとのセッションが設定されたPTTサービスシステムにおいて、
RTCPパケットが所定時間受信されないと、サーバーと端末間のセッションを終了することを特徴とするサービス陰影地域における同期化のためのPTTサービス方法。
(項目5)
前記RTCPパケットが、
前記端末がサーバーに送信する活動報告パケットと、
前記サーバーが端末に送信する発言権遊休パケットとから構成されることを特徴とする項目4に記載のサービス陰影地域における同期化のためのPTTサービス方法。
(項目6)
RTCPパケットが所定時間受信されないと、セッションを終了するか、又は遊休状態に転換する過程をさらに含むことを特徴とする項目4に記載のサービス陰影地域における同期化のためのPTTサービス方法。
(項目7)
1つ以上のPTT端末とPTTサーバーとのセッションが設定されたPTTサービスシステムにおいて、
前記PTT端末とPTTサーバー間にRTCPパケットを送受信する過程と、
前記RTCPパケットが所定時間受信されないと、該当PTT端末とPTTサーバー間のセッションを終了する過程と、
から構成されることを特徴とするサービス陰影地域における同期化のためのPTTサービス方法。
(項目8)
前記RTCPパケットが、
発言権のないPTT端末が該PTTサーバーに送信する活動報告パケットと、
遊休状態のPTTサーバーがPTT端末に送信する発言権遊休パケットとから構成されることを特徴とする項目7に記載のサービス陰影地域における同期化のためのPTTサービス方法。
(項目9)
1つ以上のPTT端末とPTTサーバーとのセッションが設定されたPTTサービスシステムにおいて、
発言権のないPTT端末は、同期を含む活動報告パケットをRTCPパケットとして前記PTTサーバーに送信する過程と、
発言権のあるPTT端末は、音声及びデータをRTPパケットとして送信する過程と、
から構成されることを特徴とするサービス陰影地域における同期化のためのPTTサービス方法。
(項目10)
前記活動報告パケット又はRTPパケットが所定時間受信されないと、前記PTTサーバーは、該当PTT端末とのセッションを終了するか、又は発言権遊休状態に転換する過程をさらに含むことを特徴とする項目9に記載のサービス陰影地域における同期化のためのPTTサービス方法。
(項目11)
1つ以上のPTT端末とPTTサーバーとのセッションが設定され、かつ遊休状態であるPTTサービスシステムにおいて、
前記PTT端末が前記PTTサーバーに活動報告パケットをRTCPパケットとして送信する過程と、
前記PTTサーバーが各PTT端末に発言権遊休パケットをRTCPパケットとして送信する過程と、
から構成されることを特徴とするサービス陰影地域における同期化のためのPTTサービス方法。
(項目12)
前記活動報告パケットが所定時間受信されないと、前記PTTサーバーが該当PTT端末とのセッションを終了する過程と、
前記発言権遊休パケットが所定時間受信されないと、前記PTT端末が前記PTTサーバーとのセッションを終了する過程とをさらに含むことを特徴とする項目11に記載のサービス陰影地域における同期化のためのPTTサービス方法。
(項目13)
発言権のある第1PTT端末から受信したRTPパケットを第2PTT端末に送信する過程と、
前記第2PTT端末から活動報告パケットを受信する過程と、
前記活動報告パケットが所定時間受信されないと、前記第2PTT端末がサービス陰影地域に移動したと判断する過程と、
前記第2PTT端末とのセッションを終了する過程と、
から構成されることを特徴とするサービス陰影地域における同期化のためのPTTサービス方法。
(項目14)
前記RTPパケットが所定時間受信されないと、前記第1PTT端末がサービス陰影地域に移動したと判断する過程と、
前記第1PTT端末の発言権を解除し、該発言権の解除を第2PTT端末に通知する過程と、
前記第1PTT端末とのセッションを終了する過程とをさらに含むことを特徴とする項目13に記載のサービス陰影地域における同期化のためのPTTサービス方法。
(項目15)
前記活動報告パケットが、
RTCPパケットであることを特徴とする項目13に記載のサービス陰影地域における同期化のためのPTTサービス方法。
(項目16)
遊休状態のPTTサーバーがセッションの設定された全てのPTT端末に発言権遊休パケットを送信する過程と、
前記PTT端末から活動報告パケットを受信する過程と、
特定PTT端末から活動報告パケットが所定時間受信されないと、該当PTT端末とのセッションを終了する過程と、
から構成されることを特徴とするサービス陰影地域における同期化のためのPTTサービス方法。
(項目17)
前記セッションの終了後、セッションが設定されたPTT端末が1つであると、該当PTT端末とのセッションも終了する過程をさらに含むことを特徴とする項目16に記載のサービス陰影地域における同期化のためのPTTサービス方法。
(項目18)
前記発言権遊休パケットと活動報告パケットが、
RTCPパケットであることを特徴とする項目16に記載のサービス陰影地域における同期化のためのPTTサービス方法。
(項目19)
PTTサーバーから送信される発言権遊休パケットを受信する過程と、
前記PTTサーバーに活動報告パケットを送信する過程と、
前記発言権遊休パケットが所定時間受信されないと、前記PTTサーバーとのセッションを終了する過程と、
から構成されることを特徴とするサービス陰影地域における同期化のためのPTTサービス方法。
(項目20)
前記発言権遊休パケットと活動報告パケットが、
RTCPパケットであることを特徴とする項目19に記載のサービス陰影地域における同期化のためのPTTサービス方法。
また、第1PTT端末110が継続してサービス陰影地域に留まる場合、図3に示すフローチャートにより、PTTサーバー200は遊休状態の第1PTT端末110から所定時間活動報告パケットが受信されないと、第1PTT端末110がサービス陰影地域に移動したと判断することで、第1PTT端末110のセッションを終了する。
Claims (10)
- PTT(push−to−talk)サービスシステム内のサービス陰影地域におけるサーバーと同期化する移動端末であって、
前記移動端末は、
前記サーバーとのセッションを確立する手段と、
RTCP(real time transport control protocol)パケットまたはRTP(real time transport protocol)パケットを前記サーバーとの間で送信および受信する手段と、
前記RTCPパケットがサーバーによって所定時間受信されていない場合に、前記確立された前記サーバーとのセッションを終了する手段と
を含み、
前記RTCPパケットは、発言権を送信する許可を有していない別の移動端末から送信される活動報告パケットであり、
前記移動端末は、無線カバー範囲を有していない地域内に存在する場合に、前記サーバーと同期化され、
前記サーバーと前記移動端末との間の前記同期化は、前記活動報告パケットを用いて周期的に検証され、その結果、前記サーバーと前記無線カバー範囲を有していない前記地域内の前記移動端末との間の前記同期化が維持されることが可能であり、
前記活動報告パケットの周期は、前記RTPパケットの品質に対する影響を有しないように、通信ネットワークに従って柔軟に設定され、
前記発言権を送信する許可を有している前記移動端末は、前記RTPパケットの品質を維持するために、前記サーバーに前記RTPパケットのみを送信する、移動端末。 - 前記活動報告ビットを定義するために、特定のビットが、前記RTCPパケットのサブタイプフィールドの値に割り当てられている、請求項1に記載の移動端末。
- 移動端末とPTT(push−to−talk)サービスシステム内のサービス陰影地域におけるサーバーとを同期化する方法であって、
前記方法は、
前記移動端末により、前記サーバーとのセッションを確立することと、
前記移動端末により、RTCP(real time transport control protocol)パケットまたはRTP(real time transport protocol)パケットを前記サーバーとの間で送信および受信することと、
前記移動端末により、前記RTCPパケットがサーバーによって所定時間受信されていない場合に、前記確立された前記サーバーとのセッションを終了することと
を含み、
前記RTCPパケットは、発言権を送信する許可を有していない別の移動端末から送信される活動報告パケットであり、
前記移動端末は、無線カバー範囲を有していない地域内に存在する場合に、前記サーバーと同期化され、
前記サーバーと前記移動端末との間の前記同期化は、前記活動報告パケットを用いて周期的に検証され、その結果、前記サーバーと前記無線カバー範囲を有していない前記地域内の前記移動端末との間の前記同期化が維持されることが可能であり、
前記活動報告パケットの周期は、前記RTPパケットの品質に対する影響を有しないように、通信ネットワークに従って柔軟に設定され、
前記発言権を送信する許可を有している前記移動端末は、前記RTPパケットの品質を維持するために、前記サーバーに前記RTPパケットのみを送信する、方法。 - 前記活動報告パケットを定義するために、特定のビットが、前記RTCPパケットのサブタイプフィールドの値に割り当てられている、請求項3に記載の方法。
- PTT(push−to−talk)サービスシステム内のサービス陰影地域における移動端末と同期化するサーバーであって、
前記サーバーは、
前記移動端末とのセッションを確立する手段と、
RTCP(real time transport control protocol)パケットまたはRTP(real time transport protocol)パケットを前記移動端末との間で送信および受信する手段と、
前記RTPパケットがサーバーによって所定時間受信されていない場合に、前記確立された前記移動端末とのセッションを終了する手段と
を含み、
前記RTCPパケットは、発言権を送信する許可を有していない別の移動端末から送信される活動報告パケットであり、
前記移動端末は、無線カバー範囲を有していない地域内に存在する場合に、前記サーバーと同期化され、
前記サーバーと前記移動端末との間の前記同期化は、前記活動報告パケットを用いて周期的に検証され、その結果、前記サーバーと前記無線カバー範囲を有していない前記地域内の前記移動端末との間の前記同期化が維持されることが可能であり、
前記活動報告パケットの周期は、前記RTPパケットの品質に対する影響を有しないように、通信ネットワークに従って柔軟に設定され、
前記発言権を送信する許可を有している前記移動端末は、前記RTPパケットの品質を維持するために、前記サーバーに前記RTPパケットのみを送信する、サーバー。 - サーバーとPTT(push−to−talk)サービスシステム内のサービス陰影地域における移動端末とを同期化する方法であって、
前記方法は、
前記サーバーにより、前記移動端末とのセッションを確立することと、
前記サーバーにより、RTCP(real time transport control protocol)パケットまたはRTP(real time transport protocol)パケットを前記移動端末との間で送信および受信することと、
前記RTCPパケットがサーバーによって所定時間受信されていない場合に、前記確立された前記移動端末とのセッションを終了することと
を含み、
前記RTCPパケットは、発言権を送信する許可を有していない別の移動端末から送信される活動報告パケットであり、
前記移動端末は、無線カバー範囲を有していない地域内に存在する場合に、前記サーバーと同期化され、
前記サーバーと前記移動端末との間の前記同期化は、前記活動報告パケットを用いて周期的に検証され、その結果、前記サーバーと前記無線カバー範囲を有していない前記地域内の前記移動端末との間の前記同期化が維持されることが可能であり、
前記活動報告パケットの周期は、前記RTPパケットの品質に対する影響を有しないように、通信ネットワークに従って柔軟に設定され、
前記発言権を送信する許可を有している前記移動端末は、前記RTPパケットの品質を維持するために、前記サーバーに前記RTPパケットのみを送信する、方法。 - サーバーとPTT(push−to−talk)サービスシステム内のサービス陰影地域における端末とを同期化する方法であって、
前記方法は、
前記サーバーにより、第2の端末に発言権を送信する許可を有している第1の端末からRTP(real time transport protocol)パケットを受信することと、
前記サーバーにより、前記第1の端末に発言権を送信する許可を有していない前記第2の端末からRTCP(real time transport control protocol)パケットを受信することであって、前記RTCPパケットは、前記第2の端末から送信される活動報告パケットである、ことと、
前記サーバーにより、前記第2の端末から送信された前記活動報告パケットが所定期間受信されていない場合に、前記第2の端末とのセッションを終了することと
を含み、
前記第2の端末は、前記第2の端末が無線カバー範囲を有していない地域内に存在する場合に、前記サーバーと同期化され、
前記第2の端末と前記サーバーとの間の前記同期化は、前記活動報告パケットを用いて周期的に検証され、その結果、前記サーバーと前記第2の端末との間の前記同期化が維持されることが可能であり、
前記活動報告パケットの周期は、前記RTPパケットの品質に対する影響を有しないように、通信ネットワークに従って柔軟に設定され、
前記第1の端末は、前記RTPパケットの品質を維持するために、前記サーバーに前記RTPパケットのみを送信する、方法。 - 前記活動報告ビットを定義するために、特定のビットが、前記RTCPパケットのサブタイプフィールドの値に割り当てられている、請求項7に記載の方法。
- サーバーとPTT(push−to−talk)サービスシステム内のサービス陰影地域における端末とを同期化する方法であって、
前記方法は、
前記サーバーにより、遊休状態である発言権遊休パケットをセッションが確立された各端末に送信することと、
前記サーバーにより、セッションが確立された各端末から活動報告パケットを受信することと、
前記サーバーにより、特定の端末から前記活動報告パケットが所定期間受信されていない場合に、前記特定の端末とのセッションを終了することと
を含み、
前記特定の端末は、前記特定の端末が無線カバー範囲を有していない地域内に存在する場合に、前記サーバーと同期化され、
前記特定の端末と前記サーバーとの間の前記同期化は、前記活動報告パケットを用いて周期的に検証され、その結果、前記サーバーと前記特定の端末との間の前記同期化が維持されることが可能であり、
前記活動報告パケットの周期は、前記RTPパケットの品質に対する影響を有しないように、通信ネットワークに従って柔軟に設定され、
前記発言権を送信する許可を有している前記特定の端末以外の端末は、前記RTPパケットの品質を維持するために、前記サーバーに前記RTPパケットのみを送信する、方法。 - 前記活動報告ビットを定義するために、特定のビットが、前記RTCPパケットのサブタイプフィールドの値に割り当てられている、請求項9に記載の方法。
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KR20040059375A KR100652650B1 (ko) | 2004-07-28 | 2004-07-28 | 서비스 음영지역에서 동기화를 위한 피티티 서비스 시스템및 방법 |
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EP (1) | EP1626591A1 (ja) |
JP (1) | JP4653585B2 (ja) |
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US7792540B2 (en) | 2010-09-07 |
US20060025168A1 (en) | 2006-02-02 |
CN1738452A (zh) | 2006-02-22 |
KR20060010609A (ko) | 2006-02-02 |
JP2006042362A (ja) | 2006-02-09 |
EP1626591A1 (en) | 2006-02-15 |
CN100466769C (zh) | 2009-03-04 |
KR100652650B1 (ko) | 2006-12-06 |
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