中文摘要：

在无线传感器网络（WSNs）中,虽然现有网关节点的设计已经将多网融合的传输方式引入进来,但很少有综合考虑整个网关节点的性能,包括吞吐量、丢包率、耗电量和成本开销等,并且少有深入探讨多网选择切换方法.针对此现状,引入传感器节点权重的概念,从不同权重的传感器节点需要不同的传输策略出发,以数据上传互联网为目的,提出了一种网关接入异构网络的框架,并在此框架中综合考虑吞吐量、耗电量和接入所需费用3个方面,提出了一种多目标优化的模型,之后给出启发式的近似算法.实验结果表明：在保证传感器网络中数据可靠传输和能耗稳定的前提下,提高了数据传输效率,并适当降低了网关接入异构网络的成本,为网关接入异构网络传输数据提供了一种可靠的方案.

英文摘要：

In wireless sensor networks （WSNs）,although the design of existing gateway node has introduced multiple network fusion transmission mode,but few take into account the performance of the entire gateway node,including throughput,packet loss rate,power consumption,cost overhead and so on,and rare deeply discuss multi-network selection switching method.Aiming at this situation,introduce the concept of sensor node weights,from the start of different weights sensor nodes need different transmission strategy,for the purpose of data uploading Internet,present a framework of a gateway node access heterogeneous networks.In this framework,considering three aspects including throughput,power consumption and accessing cost,propose a multi-objective optimization model and then give a heuristic approximation algorithm.Experimental results show that under the premise of ensuring reliable data transmission and stable energy consumption in sensor networks,improve efficiency of data transmission and reduce costs of gateway access heterogeneous networks,provide a kind of reliable scheme for gateway to access heterogeneous network for data transmission.