Power management system for a mobile unit by intelligent page monitoring

• US 6,240,288 B1
• Filed: 04/07/1998
• Issued: 05/29/2001
• Est. Priority Date: 04/07/1998
• Status: Expired due to Term

• Current Assignee: Alpha Industries Incorporated (Skyworks Solutions Incorporated)
• Original Assignee: Conexant Systems Incorporated (Synaptics Incorporated)
• Inventors: Wan, Yongbing, Komaili, Jaleh, Anderton, David O., Cox, Earl C.
• Primary Examiner(s): Maung, Nay
• Application Number:
  US09/056,572
• Time in Patent Office: 1,148 Days
• Field of Search: 455/458, 455/38.3, 455/31.2, 455/31.3, 455/567, 455/574, 340/825.44
• US Class Current: 455/426.1
• CPC Class Codes: H04W 52/0245 according to signal strength
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

A power management system for a mobile unit wherein the frequency of detecting a paging message may be controlled. The quality of the signal transmitted by a base station and the acceptable delay are determined by the mobile unit. The mobile unit compares these factors to the current paging message monitoring rate. If a further delay is acceptable, the present invention inhibits monitoring of at least one cycle of the paging message. Each cycle of the paging message inhibited conserves battery power in the mobile unit. The mobile unit also includes a technique for the user to disable the power savings feature.

Claims

1. A wireless communication system comprising:

a mobile unit;

a base station which transmits signals including paging messages to the mobile unit, each of the paging messages indicating whether a call is pending to the mobile unit, wherein the base station determines how frequently the paging messages are transmitted to the mobile unit and how many times each of the paging messages is repeated;

a signal strength detector in the mobile unit which determines the quality of the signals received by the mobile unit; and

a paging message inhibitor which inhibits the mobile unit from checking the paging messages for a period of time proportionate to the current signal quality and the number of times each of the paging messages is repeated.

2. The wireless communication system of claim 1, wherein the paging message inhibitor may be bypassed.

3. The wireless communication system of claim 1, wherein the number of paging cycles to be inhibited is dependent on a paging monitoring rate.

4. The wireless communication system of claim 1, wherein the signal strength detector measures the RSSI.

5. The wireless communication system of claim 1, wherein the signal strength detector measures the estimated frame-by-frame bit error rate.

6. The wireless communication system of claim 1, wherein the signal strength detector is based upon a parity check.