Patent ID: 7668124

Claim:
A Wireless Personal Area Network (WPAN), the WPAN comprising: a piconet coordinator (PNC); and a plurality of user piconet devices (DEVs); and wherein: the PNC transmits a respective Ultra Wide Band (UWB) pulse to each DEV within the plurality of DEVs; after receiving its respective UWB pulse, each DEV within the plurality of DEVs transmits at least one additional respective UWB pulse back to the PNC; the PNC performs ranging of relative position of each DEV within the plurality of DEVs using the time duration of round trip time of the respective transmitted UWB pulse and the at least one additional respective received UWB pulse thereby determining distance between the PNC and each DEV within the plurality of DEVs; based on the ranging of relative position each DEV of the plurality of DEVs, the PNC groups the plurality of DEVs into at least two groups and identifies a corresponding profile for each group thereby forming a plurality of profiles; and the profile of each group governs the communication between the DEVs of that group and the PNC.