05884196 is referenced by 154 patents and cites 29 patents.

To reduce the power consumption of a remote unit in a dispatch system the remote unit enters a dormant state. A base station transmits a forward link broadcast signal and monitors a common access channel. A first remote unit continually receives and decodes the forward link broadcast signal and determines whether said forward link broadcast signal comprises active signals. If the remote unit determines that the forward link broadcast signal comprises no active signals for some a duration T.sub.1, the first remote unit enters a dormant mode. In the dormant mode the remote unit sporadically receives and decodes said forward link broadcast signal. If this remote unit or any other remote unit on the same net presses a push to talk button, it transmits a message on the common access channel. In response, every remote unit on the net which is in a dormant state exits the dormant state and continually monitors the forward link broadcast signal.

Title
Method and apparatus of preserving power of a remote unit in a dispatch system
Application Number
8/660619
Publication Number
5884196
Application Date
June 6, 1996
Publication Date
March 16, 1999
Inventor
Matthew S Grob
La Jolla
CA, US
Yu Dong Yao
San Diego
CA, US
Eric J Lekven
Carlsbad
CA, US
Agent
Thomas M Thibault
Russell B Miller
Assignee
Qualcomm Incorporated
CA, US
IPC
H04B 1/38
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