Power-saving arrangement and method for mobile units in communic

Details Power-saving arrangement and method for mobile units in communic Power-saving arrangement and method for mobile units in communic

1996-11-08

1999-12-14

Wolfe, Willis R.

Telecommunications

Transmitter and receiver at separate stations

455 384, 455566, 455574, 455343, H04Q 732, H04B 116, H04B 700

Patent

active

060029188

ABSTRACT:
A communications network comprising a cellular local area wireless network includes a plurality of access points connected to a housed computer and each other, and a plurality of mobile units each mobile unit being arranged for association with an access point. The mobile units are arranged to periodically scan for and identify the most eligible access point for association on the basis of the criteria of best quality signal strength and loading factor. In order to identify when mobile units are being removed from a predetermined area, access points having directional antennae are situated adjacent exit points to detect when mobile units are in a vicinity. Each mobile unit may include paging facilities, including the capability of transmitting information in a coded form known both to the unit and to a host, and power-saving facilities.

REFERENCES:
patent: 5465401 (1995-11-01), Thompson
patent: 5519762 (1996-05-01), Bartlett
patent: 5568513 (1996-10-01), Croft et al.
patent: 5584048 (1996-12-01), Wieczorek
patent: 5630207 (1997-05-01), Gitlin et al.
patent: 5649289 (1997-07-01), Wang et al.
patent: 5793303 (1998-08-01), Koga
patent: 5815811 (1998-09-01), Pinard et al.
Wireless LAND Medium Access Control (MAC) and Physical Layer (PHY) Specifications, The Editors of IEEE, p. 802.11, May 20, 1996.

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