Patent ID: 6975599
Filing Date: 2005-12-13
Classification: H04L,Y02D

Abstract:
1. A method of communicating over a local area wireless link, said method comprising the steps of: performing at least once, a higher data rate transmission of a data packet comprising a header data and a payload data, wherein said header data is transmitted at a first transmission data rate and said payload data is transmitted at a second transmission data rate, said second data rate being higher than said first data rate, said header data containing a field describing said second transmission data rate of said payload data; monitoring for receipt of a confirmation signal, said confirmation signal confirming that said data packet has been received; monitoring a number of said higher data rate transmissions made; if a number of said higher data rate transmissions of said data packet has been made which exceeds a first predetermined number, and said confirmation signal is not received, then performing at least one lower rate transmission of said data packet, wherein said header data is transmitted at said first data rate and said packet data is transmitted at a data rate being lower than said second transmission data rate; monitoring a number of said lower data rate transmissions of said data packet; and if a number of said lower data rate transmissions exceeds a second predetermined number, and said confirmation signal is not received, dropping said data packet.