JP4246062B2 - 無線データ・ネットワーク内でソフト・ハンドオフを実行するためのシステム並びに方法 - Google Patents
無線データ・ネットワーク内でソフト・ハンドオフを実行するためのシステム並びに方法 Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L61/00—Network arrangements, protocols or services for addressing or naming
- H04L61/09—Mapping addresses
- H04L61/10—Mapping addresses of different types
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L61/00—Network arrangements, protocols or services for addressing or naming
- H04L61/58—Caching of addresses or names
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
- H04W36/0019—Control or signalling for completing the hand-off for data sessions of end-to-end connection adapted for mobile IP [MIP]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W40/00—Communication routing or communication path finding
- H04W40/24—Connectivity information management, e.g. connectivity discovery or connectivity update
- H04W40/248—Connectivity information update
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W40/00—Communication routing or communication path finding
- H04W40/34—Modification of an existing route
- H04W40/36—Modification of an existing route due to handover
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W8/00—Network data management
- H04W8/26—Network addressing or numbering for mobility support
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W80/00—Wireless network protocols or protocol adaptations to wireless operation
- H04W80/04—Network layer protocols, e.g. mobile IP [Internet Protocol]
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Description
Claims (23)
- 携帯無線ユーザー端末で使用するのに適合された通信ネットワークであって:
複数のパケット交換コア・ネットワークと;
該コア・ネットワークに結合された複数のアクセス・ポイントであって、該アクセス・ポイントの各々が、前記任意のユーザー端末が前記アクセス・ポイントに所属するようになった際に、前記任意のユーザー端末に対して前記コア・ネットワークへの通信アクセスを提供するように適合され、前記ユーザー端末と前記アクセス・ポイントとの間の所属を表す情報を格納するように適合されたアドレス解釈キャッシュを含み、前記ユーザー端末が自己の所属を第1の前記アクセス・ポイントから第2のアクセス・ポイントに変更した際に、前記第1および第2アクセス・ポイント以外の前記コア・ネットワーク上の他のノードが、前記ユーザー端末が自己の所属を前記第1のアクセス・ポイントから前記第2のアクセス・ポイントへ変更したことを示すメッセージに基づいて自己のそれぞれのアドレス解釈キャッシュを更新するまで、前記ユーザー端末向けに送信されたデータ・パケットを前記第1のアクセス・ポイントへ送信し続けるように適合され、前記第1のアクセス・ポイントが前記他のノードで受信された前記データ・パケットを前記第2のアクセス・ポイントへ送信することなく前記ユーザー端末へ送り続けるように適合された、前記複数のアクセス・ポイントとを含み、
前記ユーザー端末が自己の所属を前記第1のアクセス・ポイントから前記第2のアクセス・ポイントへ変更した際に、前記第1および第2のアクセス・ポイントおよび前記その他のノード以外の付加ノードが、前記ユーザー端末向けに送られたデータ・パケットを、前記メッセージに基づいて自己のそれぞれのアドレス解釈キャッシュを更新した後に前記第2のアクセス・ポイントへ送信するように適合され、一方前記他のノードは前記ユーザー端末向けのデータ・パケットを、前記他のノードから送られた前記データ・パケットを前記第2のアクセス・ポイントへ送ることなく前記ユーザー端末に送り続けている前記第1のアクセス・ポイントへ送信し続けている、前記通信ネットワーク。 - 請求項1記載の通信ネットワークにおいて:
前記付加ノードが前記アクセス・ポイントを含む、前記通信ネットワーク。 - 請求項1記載の通信ネットワークにおいて:
前記その他のノードが前記アクセス・ポイントを含む、前記通信ネットワーク。 - 請求項1記載の通信ネットワークにおいて:
前記第2のアクセス・ポイントが、前記メッセージを全コア・ネットワーク上に、自己の所属を変更した前記ユーザー端末のアドレスに対するアドレス解釈要求として発行するように適合された、前記通信ネットワーク。 - 請求項4記載の通信ネットワークにおいて:
前記アドレス解釈要求がアドレス解釈プロトコル要求を含む、前記通信ネットワーク。 - 請求項4記載の通信ネットワークにおいて:
前記ユーザー端末の前記アドレスが、前記ユーザー端末に割り当てられたインターネット・プロトコル・アドレスを含む、前記通信ネットワーク。 - 請求項1記載の通信ネットワークにおいて:
前記ユーザー端末が所属している前記アクセス・ポイントが、受信したデータ・パケットを前記ユーザー端末へ無線通信リンクを経由して送信するように適合されている、前記通信ネットワーク。 - 請求項1記載の通信ネットワークにおいて:
各々の前記アクセス・ポイントがそこに所属している前記ユーザー端末との間で、無線通信リンクを経由してデータ・パケットの送受信を行うように適合されている、前記通信ネットワーク。 - 請求項1記載の通信ネットワークにおいて:
前記各々のアドレス解釈キャッシュが、アドレス解釈プロトコル・キャッシュを含む、前記通信ネットワーク。 - 請求項1記載の通信ネットワークが更に:
各々が前記ユーザー端末と前記アクセス・ポイントとの間の所属関係を表し、前記メッセージに基づいて更新可能な情報を格納するのに適合された、それぞれのアドレス解釈キャッシュを含む、少なくとも1つのメディア・サーバ、DNSサーバおよびIPゲートウェイ・ルータを含む、前記通信ネットワーク。 - 請求項10記載の通信ネットワークにおいて:
前記他のノードが、前記メディア・サーバ、DNSサーバまたはIPゲートウェイ・ルータを含む、前記通信ネットワーク。 - 請求項10記載の通信ネットワークにおいて:
前記アドレス解釈キャッシュが、アドレス解釈プロトコル・キャッシュを含む、前記通信ネットワーク。 - 請求項1記載の通信ネットワークにおいて:
各々の前記アクセス・ポイントが、前記コア・ネットワークに対するアクセスを提供するように適合され、前記ユーザー端末は、アドホックネットワーク内で動作する、前記通信ネットワーク。 - 通信ネットワーク内のパケット交換コア・ネットワーク上のアクセス・ポイント間で、携帯無線ユーザー端末のハンド・オフを実行するための方法であって、各々の前記アクセス・ポイントは任意の前記ユーザー端末に対して、前記ユーザー端末が前記アクセス・ポイントに所属するようになった際に、前記コア・ネットワークに対する通信アクセスを提供するように適合され、前記ユーザー端末と前記アクセス・ポイントとの間の所属を表す情報を格納するように適合された、アドレス解釈キャッシュを含む、前記方法が:
前記ユーザー端末が自己の所属を第1の前記アクセス・ポイントから第2の前記アクセス・ポイントへ変更した際に、前記第1および第2アクセス・ポイント以外の前記コア・ネットワーク上の他のノードを制御して、前記ユーザー端末向けのデータ・パケットを前記第1のアクセス・ポイントへ、前記ユーザー端末が自己の所属を前記第1のアクセス・ポイントから前記第2のアクセス・ポイントへ変更したことを示すメッセージに基づいて、自己のそれぞれのアドレス解釈キャッシュを変更するまで送信し続けさせ;
一方、前記他のノードは前記データ・パケットを前記第1のアクセス・ポイントへ送り続け、前記第1のアクセス・ポイントを制御して、前記他のノードから受信した前記データ・パケットを前記第2のアクセス・ポイントへ送信することなく、前記ユーザー端末へ送り続けさせ、
前記ユーザー端末が自己の所属を第1の前記アクセス・ポイントから第2の前記アクセス・ポイントへ変更した際に、前記第1および第2のアクセス・ポイント並びに前記他のノード以外の付加ノードを制御して、前記ユーザー端末向けのデータ・パケットを、前記メッセージに基づいて自己のそれぞれのアドレス解釈キャッシュを更新した後に、前記第2のアクセス・ポイントへ送信させ、一方前記他のノードは前記ユーザー端末向けの前記データ・パケットを、前記他のノードから受信した前記データ・パケットを前記第2のアクセス・ポイントへ送信することなく前記ユーザー端末へ送信し続けている前記第1のアクセス・ポイントへ送信し続ける、前記方法。 - 請求項14記載の方法において:
前記付加ノードが前記アクセス・ポイントを含む、前記方法。 - 請求項14記載の方法において:
前記他のノードが前記アクセス・ポイントを含む、前記方法。 - 請求項14記載の方法が更に:
前記第2のアクセス・ポイントを制御して、前記メッセージを自己の所属をそこに変更した前記ユーザー端末のアドレスに対するアドレス解釈要求として、前記コア・ネットワーク上に発行させることを含む、前記方法。 - 請求項17記載の方法において:
前記アドレス解釈要求がアドレス解釈プロトコル要求を含む、前記方法。 - 請求項17記載の方法において:
前記ユーザー端末の前記アドレスが、前記ユーザー端末に割り当てられたインターネット・プロトコル・アドレスを含む、前記方法。 - 請求項14記載の方法が更に:
前記ユーザー端末が所属している前記アクセス・ポイントを制御して、受信したデータ・パケットを前記ユーザー端末に対して無線通信リンクを経由して送信するように適合させることを含む、前記方法。 - 請求項14記載の方法において:
各々の前記アドレス解釈キャッシュがアドレス解釈プロトコル・キャッシュを含む、前記方法。 - 請求項14記載の方法において:
前記他のノードが、前記メディア・サーバ、DNSサーバまたはIPゲートウェイ・ルータを含む、前記方法。 - 請求項14記載の方法が更に:
各々の前記アクセス・ポイントが、前記コア・ネットワークに対するアクセスを提供するように適合され、前記ユーザー端末は、アドホックネットワーク内で動作する、前記方法。
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Application Number | Priority Date | Filing Date | Title |
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US09/929,031 US7072323B2 (en) | 2001-08-15 | 2001-08-15 | System and method for performing soft handoff in a wireless data network |
PCT/US2002/025698 WO2003017695A1 (en) | 2001-08-15 | 2002-08-14 | A system and method for performing soft handoff in a wireless data network |
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JP2005500763A JP2005500763A (ja) | 2005-01-06 |
JP4246062B2 true JP4246062B2 (ja) | 2009-04-02 |
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US (1) | US7072323B2 (ja) |
EP (1) | EP1417848B1 (ja) |
JP (1) | JP4246062B2 (ja) |
KR (1) | KR100947123B1 (ja) |
AT (1) | ATE553612T1 (ja) |
CA (1) | CA2457454C (ja) |
WO (1) | WO2003017695A1 (ja) |
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- 2002-08-14 WO PCT/US2002/025698 patent/WO2003017695A1/en active Application Filing
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KR100947123B1 (ko) | 2010-03-10 |
ATE553612T1 (de) | 2012-04-15 |
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JP2005500763A (ja) | 2005-01-06 |
US7072323B2 (en) | 2006-07-04 |
WO2003017695A1 (en) | 2003-02-27 |
EP1417848B1 (en) | 2012-04-11 |
WO2003017695A9 (en) | 2004-05-06 |
US20030091011A1 (en) | 2003-05-15 |
CA2457454A1 (en) | 2003-02-27 |
EP1417848A4 (en) | 2006-05-17 |
EP1417848A1 (en) | 2004-05-12 |
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Free format text: JAPANESE INTERMEDIATE CODE: R250 |
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EXPY | Cancellation because of completion of term |