Invention Grant
- Patent Title: Efficient communication channel survey
- Patent Title (中): 高效沟通渠道调查
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Application No.: US12790720Application Date: 2010-05-28
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Publication No.: US07995547B1Publication Date: 2011-08-09
- Inventor: Craig H. Barratt
- Applicant: Craig H. Barratt
- Applicant Address: US CA San Jose
- Assignee: Atheros Communications, Inc.
- Current Assignee: Atheros Communications, Inc.
- Current Assignee Address: US CA San Jose
- Agency: Bever, Hoffman & Harms, LLP
- Agent Jeanette S. Harms
- Main IPC: H04W4/00
- IPC: H04W4/00

Abstract:
A system and method are described for repeatedly and efficiently performing a wireless communication channel survey to determine whether comparable communications devices exist, which frequencies are in use, and the identities of the comparable communications devices. A beacon data table stores received beacon data which is used to predict beacon arrival times, thereby allowing a receiver to be tuned away from an active data communications channel for a shorter dwell time than a beacon period. A further efficiency can be gained if beacon generators cooperatively stagger their beacon times according to one or more measurable characteristics of the beacon generator, e.g. the operating channel number and the SSID.
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