Abstract
Broadcast is one of the most fundamental services provided by the communication protocol for wireless sensor networks. In this paper, we design an energy-aware reliable deterministic broadcast scheduling protocol by using user-irrepressible (UI) protocol sequences. Each user transmits a packet in a time slot if and only if the sequence value is equal to one. A collision occurs if two or more users transmit at the same slot. UI sequences ensure that each user can receive at least one packet error-free from each other within the sequence period. Moreover, it does not require any time synchronization among the users. In the protocol, a new construction of UI sequences is presented and a sleeping mechanism is proposed. Simulation results show that the new protocol has a significant energy saving compared with traditional UI-sequences-based schemes. In addition, the delay can in fact be reduced by employing new UI sequences instead.
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