传感器网络推拉混合模式代码传输方法

Method of Combining Push and Pull for Code Transmission in Sensor Networks

代码传输是实现无线传感器网络应用重构的关键技术。首先研究传感器网络环境自适应应用重构(EAAR)模型的两种代码传输模式—拉模式和推模式,并结合两种模式的特点提出一种适用于分簇传感器网络的能量有效代码传输模式—基于簇的混合代码传输(Cluster-based Hybrid Code Transmission,CHCT)。在该模式下,簇头节点采用拉方式从基站获取代码,簇内节点采用推方式进行代码传输。仿真实验验证了方法的有效性并讨论了影响CHCT性能的主要参数。

Code transmission is a key technology to implement application reconfiguration in wireless sensor networks, Two kinds of code transmission paradigms for environment adaptive application reconfiguration （EAAR） model were studied： Pull paradigm and Push paradigm, Combining the advances of Pull and Push, an energy-efficient cluster-based hybrid code transmission （CHCT） was proposed which was used in cluster-based wireless sensor networks. In this hybrid paradigm, cluster heads acquire codes from base station with Pull mode; and nodes in cluster transfer codes with Push mode. Extensive simulations were conducted to demonstrate the effectiveness of the method proposed and the effects of key parameters on CHCT were discussed.