802.11 using a compressed reassociation exchange to facilitate fast handoff,申请号US20030417653-传众专利搜索

802.11 using a compressed reassociation exchange to facilitate fast handoff

申请公布号：US7350077(B2)

申请号：US20030417653

申请日期：2003.04.17

申请公布日期：2008.03.25

申请人：

CISCO TECHNOLOGY, INC.

发明人：MEIER ROBERT;REBO RICHARD D.;GRISWOLD VICTOR J.;SMITH DOUGLAS;WINGET NANCY CAM

分类号：H04L9/00;H04L12/28;H04L29/06;H04W12/06;H04W36/00

主分类号：H04L9/00

摘要：A method and system for handling roaming mobile nodes in a wireless network. The system uses a Subnet Context Manager to store current Network session keys, security policy and duration of the session (e.g. session timeout) for mobile nodes, which is established when the mobile node is initially authenticated. Pairwise transit keys are derived from the network session key. The Subnet Context Manager handles subsequent reassociation requests. When a mobile node roams to a new access point, the access point obtains the network session key from the Subnet Context Manager and validates the mobile node by computing a new pairwise transient key from the network session key.