已有的传感网络再编程协议大多假定网络中所有节点是同类的,运行同一版本的应用程序,而实际网络节点是异类的.提出了一种新的具有范围选择的再编程协议,该协议变传统的ADV-REQ-DATA三次握手该协议为路由形成、代码传送、请求丢失包三个阶段协议,有效地降低了参与代码转发的中间节点数；中间转发节点通过获取一跳范围内希望接收更新代码数据的节点序列,采取单播或组播方式有针对性传送更新代码,而不是泛洪式的广播,减少了REQ确认信息包,并能统计出参与代码更新的同类节点数和参与代码转发的异类中间节点数.性能分析与模拟实验表明:该协议在平均延时、能量消耗等方面优于传统的Aqueduct.%Most of the existed reprogramming protocol for sensor networks assum that all nodes in networks are homogeneous and run the same application, but the nodes are heterogeneous in practice. A new reprogramming protocol with selection of scope is presented, it changes traditional ADV-REQ-DATA three handshakes protocol to route creation, code dissemination and requesting missed packets three stages protocol, reduces the number of intermediate forward nodes efficiently. With acquiring sequence of nodes which want to get code packet in one hop, the intermediate nodes transmits updated code with targeted nodes through unicast or multicast, decreases the REQ messages without broadcast as flooding, and counts homogeneous and heterogeneous nodes which forward the packet. The performance analysis and simulation experiment indicate that our protocol is advantaged then traditional Aqueduct in average delay and energy consumption.
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