Abstract: Aiming at the problem that the consumption of the classical clustering algorithm is imbalanced，this paper proposes one kind of highly effective cross-layer protocol OCBC（optimal cluster-head-distribution based on cross-layer algorithm）.This protocol can optimize the distribution of the cluster-head by partitioning the network with longitudes and latitudes and decide cluster-head according to the position and remainder energy of the nodes.Due to the optimal multi-hop algorithm，the expansibility of the network can be improved greatly.The simulation results indicate that the dynamic clustering strategy has more advantages in expanding network and prolonging lifecycle than LEACH protocol.

Key words: wireless sensor network, clustering protocol, cross-layer, multi-hop

摘要： 针对经典分簇算法能量负载不均衡的问题，提出了一种高效节能的跨层协议OCBC，在该协议中通过经线和纬线对网络进行划分，同时根据节点的地理位置和剩余能量来竞选簇首，以实现簇首的优化分布，使得能量消耗更加均衡。由于采用了优化的多跳算法，网络的扩展性得以较大的提高。仿真结果表明，动态分簇策略比传统的LEACH协议在网络扩展和生命周期方面有较大的性能优势。

关键词: 无线传感器网络, 分簇, 跨层, 多跳