Patent ID: 7573910
Filing Date: 2009-08-11
Classification: H04L,H04W

Abstract:
1. A wireless communication device comprising: an input/output terminal; a memory configured to store parameters relevant to a wireless communication protocol and to store a fragmentation threshold; a modem coupled to the input/output terminal and the memory and configured to communicate using a wireless protocol over a wireless channel with at least one other modem based at least in part on the parameters stored in the memory and to use the fragmentation threshold to frame outgoing data packets; and a logic circuit coupled to the modem and the memory, wherein the logic circuit is configured to receive information related to wireless channel performance and update at least one parameter in the memory, wherein the information related to wireless channel conditions includes a received signal strength indicator, a symbol energy, an incoming frame error rate, an outgoing frame error rate and an impulse response signal energy, and wherein the logic circuit is further configured to periodically update the fragmentation threshold based at least in part on a function of the received signal strength indicator, the symbol energy, the incoming frame error rate, the outgoing frame error rate and the impulse response signal energy, wherein the fragmentation threshold of a frame is based on a function of the difference between received signal strength indicators of two previous frames, the difference between symbol energies of the two previous frames, the difference between incoming frame error rates of the two previous frames, the difference between outgoing frame error rates of the two previous frames and the difference between impulse response signal energies of the two previous frames.