摘要 |
<p>In a communication network, each of the plurality of similar stations (10, 12, 13, 14, 15) is operated so that the group automatically organizes or configures itself into a multi-layered network for relaying messages from station (10, 12, 13, 14, 15) to station (10, 12, 13, 14, 15), with some of the stations (12, 14) operating at a relatively high power level as message gateways.</p> |