Invention Grant
- Patent Title: Systems and methods for indicating buffered data at an access point using a traffic indication map broadcast
- Patent Title (中): 使用交通指示图广播在接入点处指示缓冲数据的系统和方法
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Application No.: US12046946Application Date: 2008-03-12
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Publication No.: US08089908B2Publication Date: 2012-01-03
- Inventor: Maarten Menzo Wentink
- Applicant: Maarten Menzo Wentink
- Applicant Address: US CA Newport Beach
- Assignee: Conexant Systems, Inc.
- Current Assignee: Conexant Systems, Inc.
- Current Assignee Address: US CA Newport Beach
- Agency: Farjami & Farjami LLP
- Main IPC: G08C17/00
- IPC: G08C17/00 ; H04W4/00

Abstract:
Stations in standby mode periodically wake up to check for buffered data at the access points. Traditionally, the information is available by checking the periodic beacon frame for a traffic indication map (TIM). Unfortunately, the length of beacons has steadily increased with the progression of the various wireless standards requiring stations to wake up for longer periods to merely check for buffered data. Several approaches are disclosed which address this shortcoming, including the broadcast of TIM frames, the partial reception of beacon frames and the use of an embedded TIM frame within a beacon frame.
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