JP2006527523A - アドホック・ネットワークにおけるフェアネスおよびサービスの差別化を実現するシステムおよび方法 - Google Patents
アドホック・ネットワークにおけるフェアネスおよびサービスの差別化を実現するシステムおよび方法 Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/08—Non-scheduled access, e.g. ALOHA
- H04W74/0808—Non-scheduled access, e.g. ALOHA using carrier sensing, e.g. carrier sense multiple access [CSMA]
- H04W74/0816—Non-scheduled access, e.g. ALOHA using carrier sensing, e.g. carrier sense multiple access [CSMA] with collision avoidance
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/18—Self-organising networks, e.g. ad-hoc networks or sensor networks
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- H—ELECTRICITY
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Abstract
Description
後述する本発明の実施形態においては、単一/多チャンネル、マルチホップ無線ネットワークにおけるデータ交換に対するハンドシェーキング・プロトコルを含む通信システムおよび方法が開示される。完全分布型システムたとえば図1のネットワーク100におけるチャンネル使用のフェアネスおよびサービスの差別化の問題を解決するために、ローカル・スケジューリング・アルゴリズムが1つまたは複数のノードにおいて与えられる。
最後に、第4の状況として、ノードがCTSメッセージを受信するときには、アルゴリズムは、そのノードの伝えられた負荷を、特定された優先度レベルにおいて計算する。
パケット送信
1)パケット記憶装置におけるパケットの優先度値の合計として、総計された「重み」を計算する。パケットの優先度は、優先順位、試行回数、およびパケットの寿命の、重み付き合計として計算され得る。
1)意図しないRTSを受信した場合は直ちに、CTSを待って、時間間隔Taの間ビジーである送信元および次ホップ・アドレスの両方をマークする。
パケット送信
1)パケット記憶装置におけるパケットの優先度値の合計として、総計された「重み」を計算する。パケットの優先度は、優先順位、試行回数、およびパケットの寿命の重み付き合計として計算しても良い。なお、すべてのノードはその重み値を、RTSメッセージおよびCTSメッセージを介して分布させることに注意されたい。
1)意図しないRTSを受信した場合は直ちに、CTSを待って、時間間隔Taの間ビジーである送信元および次ホップ・アドレスの両方をマークする。
Claims (7)
- アドホック・マルチホッピング・ピア・トゥ・ピア無線通信ネットワークにおけるノードに対してメディア・アクセス制御(MAC)スケジューリングを実行するための方法であって、
送信を試行するノードを制御して、受信された送信要求(RTS)メッセージおよび受信準備完了(CTS)メッセージに含まれる情報に基づいて、該ノードの優先度レベル重みを評価すること、
前記評価された優先度レベル重みに基づいて、前記ノードの送信をスケジューリングすること、
を備える方法。 - 請求項1に記載の方法において、前記制御するステップは、さらに、受信されたRTSメッセージおよびCTSメッセージに基づいて、近隣ノードの優先度レベル重みを評価することを含み、前記スケジューリングするステップは、前記ノードの評価された優先度レベル重みと、前記近隣ノードの評価された優先度レベル重みとに基づいて、送信をスケジュールすることを含む、方法。
- 請求項1に記載の方法において、前記RTSメッセージおよびCTSメッセージに含まれる情報は、送信元および宛先MACアドレス、現在のパケット長、データ・チャンネル・レート、選択されたデータ・チャンネル、およびパケット優先度レベルから計算される重み付きキュー長のうちの少なくとも1つを含む、方法。
- 請求項1に記載の方法において、システムが単一チャンネルを使用し、かつRTS/CTSが送信に対して有効になっていない場合には、前記RTSメッセージおよびCTSメッセージに含まれる情報を、DATAメッセージおよびACKメッセージにおいてそれぞれ伝えることができる、方法。
- 請求項2に記載の方法において、システムが単一チャンネルを使用し、かつRTS/CTSが送信に対して有効になっていない場合には、前記RTSメッセージおよびCTSメッセージに含まれる情報を、DATAメッセージおよびACKメッセージにおいてそれぞれ伝えることができる、方法。
- 請求項3に記載の方法において、システムが単一チャンネルを使用し、かつRTS/CTSが送信に対して有効になっていない場合には、前記RTSメッセージおよびCTSメッセージに含まれる情報を、DATAメッセージおよびACKメッセージにおいてそれぞれ伝えることができる、方法。
- 請求項1に記載の方法において、前記ノードが移動ノードである、方法。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US47616803P | 2003-06-06 | 2003-06-06 | |
US60/476,168 | 2003-06-06 | ||
PCT/US2004/018124 WO2004109473A2 (en) | 2003-06-06 | 2004-06-07 | System and method to provide fairness and service differentiation in ad-hoc networks |
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JP2006527523A true JP2006527523A (ja) | 2006-11-30 |
JP5054377B2 JP5054377B2 (ja) | 2012-10-24 |
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JP2006509078A Expired - Fee Related JP5054377B2 (ja) | 2003-06-06 | 2004-06-07 | アドホック・ネットワークにおけるフェアネスおよびサービスの差別化を実現するシステムおよび方法 |
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US (1) | US7075890B2 (ja) |
EP (1) | EP1632045B1 (ja) |
JP (1) | JP5054377B2 (ja) |
KR (1) | KR100823467B1 (ja) |
WO (1) | WO2004109473A2 (ja) |
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JP2010505348A (ja) * | 2006-09-29 | 2010-02-18 | ローズマウント インコーポレイテッド | 無線メッセージの局所的にアクティブにされた高速アクティブスケジューリングをもつ無線メッシュネットワーク |
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EP1632045B1 (en) | 2013-08-21 |
JP5054377B2 (ja) | 2012-10-24 |
EP1632045A2 (en) | 2006-03-08 |
EP1632045A4 (en) | 2010-10-27 |
KR100823467B1 (ko) | 2008-04-21 |
US20050002364A1 (en) | 2005-01-06 |
WO2004109473A2 (en) | 2004-12-16 |
WO2004109473A3 (en) | 2005-11-03 |
KR20060026864A (ko) | 2006-03-24 |
US7075890B2 (en) | 2006-07-11 |
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