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Section I Ad Hoc Wireless Networks

The maturity of wireless transmissions and the popularity of portable computing devices have made the dream of “communication anytime and anywhere” possible. An ad hoc wireless network is a good choice for fulfilling this dream. An ad hoc wireless network consists of a set of mobile hosts operating without the aid of an established infrastructure of centralized administration. Communication is done through wireless links among mobile hosts using their antennas. Due to concerns such as radio power limits and channel utilization, a mobile host may not be able to communicate directly with other hosts in a single-hop fashion. In this case, a multihop scenario occurs, in which the packets sent by the source host must be relayed by several intermediate hosts before reaching the destination host.