JP4602979B2 - マルチメディア通信システムにおけるデータ共有 - Google Patents
マルチメディア通信システムにおけるデータ共有 Download PDFInfo
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- JP4602979B2 JP4602979B2 JP2006525806A JP2006525806A JP4602979B2 JP 4602979 B2 JP4602979 B2 JP 4602979B2 JP 2006525806 A JP2006525806 A JP 2006525806A JP 2006525806 A JP2006525806 A JP 2006525806A JP 4602979 B2 JP4602979 B2 JP 4602979B2
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/12—Applying verification of the received information
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/10—Architectures or entities
- H04L65/1045—Proxies, e.g. for session initiation protocol [SIP]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/1066—Session management
- H04L65/1101—Session protocols
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/80—Responding to QoS
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/04—Protocols specially adapted for terminals or networks with limited capabilities; specially adapted for terminal portability
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Computer Security & Cryptography (AREA)
- Computing Systems (AREA)
- General Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Business, Economics & Management (AREA)
- General Business, Economics & Management (AREA)
- Mobile Radio Communication Systems (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
- Information Transfer Between Computers (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
Description
本発明は、組み合わせマルチメディアサービスに関するものであり、より詳しくは、このようなサービスに関するトラフィック量を最小化する方法に関するものである。
IPマルチメディア(IPMM)サービスは、同一セッション内で、音声、ビデオ、メッセージング、データ等の動的な組み合わせを提供する。基本アプリケーションと、組み合わせることが可能となるメディアの数が増えることによって、エンドユーザへ提供されるサービスの数も増え、また、個人間通信の経験も充実することになる。これは、新世代の、パーソナライズされた、充実したマルチメディア通信サービスをもたらすことになる。このサービスは、以下の詳細説明で考慮される、いわゆる、「組み合わせIPマルチメディア」サービスを含んでいる。
本発明の第1の構成に従えば、通信システムにおける送信帯域幅の使用を最適化する方法が提供される。この方法は、第1ノードから第2ノードへインタフェースを介して送信されるデータに対して、前記データのコンテンツに対する署名を生成し、前記第1ノードから、前記第2ノードあるいはその送信経路内の中間ノードへ署名を送信し、前記第2ノードあるいは前記中間ノードにおいて、前記署名と、そのノードに記憶されているデータの署名とを比較し、前記受信した署名が前記記憶されているデータの署名と一致しない場合にのみ、前記インタフェースを介して、前記第1ノードから前記第2ノードへ前記データを送信する。
図示のために、本発明の以下の実施形態では、3Gセルラー通信システムの状況で説明する。このシステムは、ネットワーク加入者が、図1に示されるような移動端末を使用する。図示の例では、データの交換は、移動端末間で実行される。この移動端末は、同一のオペレータネットワークあるいは異なるネットワークに「接続」されていても良い。各ネットワークは、「プロキシ」サーバ(例えば、IPマルチメディアシステムであるIMS内に)が提供されている。
Claims (6)
- 第1ノードから第2ノードへインタフェースを介して送信されるデータに対して、通信システム内の送信帯域幅の使用を最適化する方法であって、
前記第2ノードあるいは別ノードと従前に共有されている前記データをユーザが共有しようとしているかどうかを、前記第1ノードで検出し、
従前に共有されている前記データを前記ユーザが共有しようとしていることを検出した場合、前記データのコンテンツに対する署名を生成し、前記第1ノードから、前記第2ノードあるいはその送信経路内の中間ノードへ前記署名を送信し、前記第2ノードあるいは前記中間ノードにおいて、前記署名と、そのノードに記憶されているデータの署名とを比較し、前記受信した署名が記憶されているデータの署名と一致しない場合にのみ、前記インタフェースを介して、前記第1ノードから前記第2ノードへ前記データを送信し
従前に共有されていないデータを前記ユーザ共有しようとしていることを検出した場合、前記データの完全なものを前記第1ノードから前記第2ノードへ送信する
ことを特徴とする方法。 - 前記通信ネットワークは、移動無線通信ネットワークであり、前記インタフェースは、エアインタフェースである
ことを特徴とする請求項1に記載の方法。 - 前記データは、静止画像、あるいはビデオ画像、あるいは電子メールに対応する
ことを特徴とする請求項1または2に記載の方法。 - 前記第1ノードと前記第2ノードは、ユーザ端末であり、
前記中間ノードは、プロキシサーバとして存在し、かつ動作し、これは、ユーザ端末間で初めて送信されるデータをキャッシュし、受信した署名が記憶されているあるいはキャッシュされているデータの署名と一致する場合には、そのデータは、前記中間ノードによって前記第2ノードへ送信される
ことを特徴とする請求項1乃至3のいずれか1項に記載の方法。 - 前記第2ノードは、ユーザ端末であり、前記第1ノードは、コンテンツが記憶されているノードであり、
前記署名は、前記第1ノードで生成され、かつ前記第2ノードへ送信され、
前記署名の比較に基づいて、前記第2ノードは、前記データが、送信対象として意図されている既に受信しているデータであるかどうかを判定することができ、該データが既に送信されている場合、更なる送信が中止可能である
ことを特徴とする請求項1乃至3のいずれか1項に記載の方法。 - 前記データは、前記第1ノードと前記第2ノード間における回路交換音声通話中に送信されるマルチメディアデータである
ことを特徴とする請求項1または2に記載の方法。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GBGB0321426.9A GB0321426D0 (en) | 2003-09-12 | 2003-09-12 | Data sharing in a multimedia communication system |
PCT/EP2004/051741 WO2005027457A1 (en) | 2003-09-12 | 2004-08-06 | Data sharing in a multimedia communication system |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2007534202A JP2007534202A (ja) | 2007-11-22 |
JP4602979B2 true JP4602979B2 (ja) | 2010-12-22 |
Family
ID=29226995
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2006525806A Expired - Fee Related JP4602979B2 (ja) | 2003-09-12 | 2004-08-06 | マルチメディア通信システムにおけるデータ共有 |
Country Status (9)
Country | Link |
---|---|
US (1) | US20070206609A1 (ja) |
EP (1) | EP1665713B1 (ja) |
JP (1) | JP4602979B2 (ja) |
CN (1) | CN1849797A (ja) |
AT (1) | ATE350853T1 (ja) |
DE (1) | DE602004004165T2 (ja) |
ES (1) | ES2280050T3 (ja) |
GB (1) | GB0321426D0 (ja) |
WO (1) | WO2005027457A1 (ja) |
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2003
- 2003-09-12 GB GBGB0321426.9A patent/GB0321426D0/en not_active Ceased
-
2004
- 2004-08-06 AT AT04766445T patent/ATE350853T1/de not_active IP Right Cessation
- 2004-08-06 DE DE602004004165T patent/DE602004004165T2/de active Active
- 2004-08-06 US US10/570,682 patent/US20070206609A1/en not_active Abandoned
- 2004-08-06 EP EP04766445A patent/EP1665713B1/en not_active Not-in-force
- 2004-08-06 CN CN200480026331.7A patent/CN1849797A/zh active Pending
- 2004-08-06 WO PCT/EP2004/051741 patent/WO2005027457A1/en active IP Right Grant
- 2004-08-06 ES ES04766445T patent/ES2280050T3/es active Active
- 2004-08-06 JP JP2006525806A patent/JP4602979B2/ja not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
DE602004004165T2 (de) | 2007-10-11 |
GB0321426D0 (en) | 2003-10-15 |
EP1665713A1 (en) | 2006-06-07 |
EP1665713B1 (en) | 2007-01-03 |
JP2007534202A (ja) | 2007-11-22 |
CN1849797A (zh) | 2006-10-18 |
ATE350853T1 (de) | 2007-01-15 |
DE602004004165D1 (de) | 2007-02-15 |
US20070206609A1 (en) | 2007-09-06 |
WO2005027457A1 (en) | 2005-03-24 |
ES2280050T3 (es) | 2007-09-01 |
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