Abstract: A lot of energy lost when the cluster heads communicate with base station in HEED protocol.In such a case，the paper proposes a inter-cluster routing protocol based on HEED.It selects a central cluster head from several cluster heads by a gateway node，and divides wireless sensor network into a number of large cluster-areas.Each large cluster-area has a central cluster head，a gateway node and several middle cluster heads.In each area，the middle cluster heads send data to their central cluster head through a gateway，then the central head fuses the data and sends it to base station.The protocol decreases the number of cluster head which communicates with base station，reduces the energy consumption，and prolongs the network lifetime.

摘要： 针对HEED协议中簇首与基站通信能量消耗过大的问题，在HEED协议的基础之上，提出了一种簇间路由的算法ICRP。网关GW从若干个簇首中选出它的中心簇首和中间簇首，通过ICRP最终将WSN划分成若干个LArea。每个LArea中都有一个中心簇首、一个网关和若干中间簇首。中间簇首通过网关将数据发给中心簇首，中心簇首融合后再发给基站。实验证明，该协议减少了与直接基站通信的簇首的个数，降低了能耗，延长了网络的生命周期。