Wireless sensor platforms (10), when deployed, can ascertain whether they can meaningfully participate in communications with more than one cluster (22, 23) of such devices. When true, such multi-cluster platforms can serve as bridge nodes to facilitate the passing of data collected from one cluster...http://www.google.co.uk/patents/US20040090326?utm_source=gb-gplus-sharePatent US20040090326 - Wireless sensor apparatus and method
