基于NS的DT-MSN实验床设计和实现

容延迟移动传感器网络（DT-MSN）是新出现的一种网络模型，是指部署在多个移动物体上的传感器所组成的网络，由于节点移动性和稀疏的网络密度，使得它的网络连接以一定概率存在，这使得基于TCP/IP分层协议的NS仿真平台不能对DTMSN进行较好地仿真.我们首先分析了传统TCP/IP分层协议不能用于DTMSN的原因，再结合DTMSN特点和数据传输机制，设计了一个基于NS的DTMSN实验床，最后对NS平台作了一定修改，实现了该实验床.

The design and implementation of testbed for DT-MSN on NS

Delay Tolerant-Mobile Sensor Network is a new network model, which is composed of sensors attached to mobile objects. Due to the dynamic network topology and the sparse nodal density, DT-MSN is an opportunistic network, in which the connections exist only with certain probability. This characteristic of DT-MSN makes the existing NS platform that is based on the TCP/IP protocol stack cannot simulate it properly. This paper first explained why the TCP/IP protocol stack is not suit for the DT-MSN, and then designed and implemented a testbed for DT-MSN on NS simulation platform.