Joint Synchronization, Routing and Energy Saving in CSMA/CA Multi-Hop Hybrid Networks
Multi-hop hybrid networks can help providing both high bandwidth and broad coverage for wireless data networks. The authors focus on CSMA/CA-based networks and take IEEE 802.11 as a concrete example. They show that the three fundamental operations of synchronization, routing and energy saving can be implemented in an integrated way. The integrated solution is based on the periodic computation of a broadcast tree among the nodes reporting to the same Access Point, starting from the Access Point itself. They use the nodes that are tree vertices as relays for both data and control packets. They propose a distributed neighbor discovery protocol and a simple centralized algorithm for computing the broadcast tree.