A new protocol sequences based broadcast scheme for wireless sensor networks

Broadcast service is critical to the coordination of tracking interests in wireless sensor networks (WSNs). Protocol sequences are deterministic binary sequences with low cross-correlation, and can be used to define a reliable broadcast scheme for WSNs. In contrast to random schemes, a protocol sequences based scheme can provide strict guarantee on worst-case delay to asynchronous users. However, previous studies have shown traditional protocol sequences based schemes with fixed coding rates cannot simultaneously achieve excellent throughput and delay performance. To address this issue, this paper proposes a new protocol sequences based broadcast scheme, which allows each user to adjust its coding rate according to the information in every incoming packet. Through numerical results, we show that the proposed algorithm significantly outperforms other similar algorithms.