US 2014/0177743 A1 · Multi-Clock Physical Layer Preamble Design and Detection

Abstract

In a method for detecting, at a first communication device, a clock rate of a physical layer (PHY) data unit, the PHY data unit is received, at the first communication device, from a second communication device via a communication channel. The PHY data unit includes (i) a first portion and (ii) a second portion following the first portion. At the first communication device, the first portion of the PHY data unit is processed. Processing the first portion of the PHY data unit includes performing one or more autocorrelations to generate one or more respective autocorrelation outputs. At the first communication device and based on at least one of the one or more autocorrelation outputs, a clock rate of the second portion of the PHY data unit is determined.

Claims21

Dependent claims

A method for detecting, at a first communication device, a clock rate of a physical layer (PHY) data unit, the method comprising:

receiving, at the first communication device, the PHY data unit from a second communication device via a communication channel, wherein the PHY data unit includes (i) a first portion and (ii) a second portion following the first portion;
processing, at the first communication device, the first portion of the PHY data unit, wherein processing the first portion of the PHY data unit includes performing one or more autocorrelations to generate one or more respective autocorrelation outputs;
and
determining, at the first communication device and based on at least one of the one or more autocorrelation outputs, a clock rate of the second portion of the PHY data unit.

1 more element

A communication device comprising:

a network interface device configured to
receive a physical layer (PHY) data unit via a communication channel, wherein the PHY data unit includes (i) a first portion and (ii) a second portion following the first portion,
process the first portion of the PHY data unit at least in part by performing one or more autocorrelations to generate one or more respective autocorrelation outputs, and
determine, based on at least one of the one or more autocorrelation outputs, a clock rate of the second portion of the PHY data unit.

1 more element

A tangible, non-transitory computer-readable medium storing instructions that, when executed by one or more processors of a communication device, cause the one or more processors to:

process a physical layer (PHY) data unit received via a communication channel, wherein
the PHY data unit includes (i) a first portion and (ii) a second portion following the first portion, and
the instructions cause the one or more processors to process the PHY data unit at least by performing one or more autocorrelations to generate one or more respective autocorrelation outputs;
and
determine, based on at least one of the one or more autocorrelation outputs, a clock rate of the second portion of the PHY data unit.

2 more elements

Dependencies are inferred from the claim text.

Multi-Clock Physical Layer Preamble Design and Detection

Life of this patent

Multi-Clock Physical Layer Preamble Design and Detection

Life of this patent

Abstract

Claims21