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US 2006/0068751 A1Published application
Unconnected power save mode for improving battery life of wireless stations in wireless local area networks
AssigneeTexas Instruments Incorporated
InventorsPraphul Chandra, David Lide, Manoj Sindhwani
Life of this patent
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Abstract
An unconnected power save method reduces the battery consumption of a wireless station in a wireless local area network (WLAN). A wireless station enters a sleep mode between scans for a prospective access point. The sleep duration time is determined using the current position of the station relative to the WLAN network topology.
Claims17
A method for improving battery life of a wireless device in a wireless local area network, comprising:
- scanning, with a wireless station, for an identifying signal from a prospective access point in a wireless local area network;
- memorizing, during said scanning, identifying signals from one or more access points that are geographically near to said prospective access;
- reducing a sleep mode duration of said wireless station when said wireless station detects said memorized identifying signals.
A method for improving battery life of a wireless device in an IEEE 802.11 wireless local area network (WLAN), comprising:
- scanning, with a wireless station, for wireless signals from access points containing basic service set identification numbers (BSSIDs);
- creating a list of said BSSIDS detected from said scanning;
- determining if said wireless station is close to a prospective access point by comparing said list of said BSSIDs of said access points to a list of BSSIDs of neighboring access points to said prospective access point;
- and
- if said station is close to said prospective access point, increasing the periodicity of scans by said station for said prospective access point.
2 more elements
Dependencies are inferred from the claim text.