US 2008/0304432 A1 · System and method for an energy efficient RF transceiver

Abstract

An energy efficient radio having a clocking system utilizing two clocks with very different precision and power characteristics. In another aspect, the time that a radio spends on listening/receiving is optimized so that energy is not wasted when there is no need to keep receiving. In another aspect, to further improve the energy efficiency, two receive portions with drastic difference in power consumption, instead of a single receive portion as is used in a typical wireless receiver, and are used to process different parts of a received packet.

Claims14

Dependent claims

A method of reducing the power consumption of a wireless communications device, the device having a sleep mode and a wake-up mode, comprising the steps of:

(a) placing a first receiver portion of the device in a wake-up mode;
(b) receiving a signal having a header and a payload;
(c) decoding the header to determine an identity of the intended receiver in the first receiver portion;
(d) placing the first receiver portion in a sleep mode if the device is not the intended receiver;
and
(e) waking up a second receiver portion and decoding the payload in the second receiver portion if the device is the intended receiver.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application

12/153,424Filed 19 May 2008

Priority

18 May 2007

Published

11 Dec 2008

Term ends

Not estimatedThe source records don’t support an estimate.

Classification5 codes

H04W 52/0229
Using monitoring of external events, e.g. the presence of a signal: where the received signal is a wanted signal
H04W 52/029
Changing the clock frequency of a controller in the equipment: reducing the clock frequency of the controller
Y02D 30/70
Reducing energy consumption in communication networks: in wireless communication networks
H04W
Wireless communication networks

System and method for an energy efficient RF transceiver

Life of this patent

System and method for an energy efficient RF transceiver

Life of this patent

Abstract

Claims14