Delay-tolerant mobile sensor networks（DT-MSNs）is a new network model by introducing delay tolerant netwoks（DTN）into wireless sensor networks.Nodal mobility

sparse network density and intermittent connectivity are its main features.Through analyzing the problem of the DT-MSNs’s bottom protocol based on traditional narrowband communication

an idea of using ultra wide-band（UWB） technology into DT-MSNs is proposed.UWB has the features of high transmission rate

low energy consumption

high anti-interference capability which can improve data delivery ability and network performance in DT-MSNs.In order to verify the correctness of the idea

DCC-MAC protocol is added to the existing DT-MSNs simulation platform.The simulation experimental result proved that using UWB technology in DT-MSNs is feasible.