一种基于多天线的动态TDMA协议仿真研究  

Simulation Study of Multi-Channel Dynamic TDMA Protocol

作　　者：闫鲁生[1] 王涛[1] 李威[1] 

机构地区：[1]中国人民解放军91655部队

出　　处：《通信技术》2011年第12期107-110,共4页Communications Technology

摘　　要：提出一种用于Ad Hoc网络MAC层的多天线、多信道动态TDMA协议,它采用一个全向天线和多个方向性的扇区天线。该协议通过空分复用控制,可提高网络的吞吐量,通过基于动态时隙分配算法和相应的邻居发现策略,以减少时隙空闲,提高信道利用率。利用NS-2平台进行的仿真研究表明,与单一全向天线的MAC协议相比,所提出的协议在吞吐量和时延方面有明显的提高。A New Ad Hoc MAC protocol using multi-antenna and multi-channel is proposed in the paper. The protocol is supported by one omni-directional antenna and several sector antennas. The network throughput is improved by space division multiplex. The idle-time slot is reduced by dynamic time-slot allocation and neighbor discovery strategy. The simulation with NS-2 shows that the proposed protocol perfors much better than the protocol based on one omni-directional antenna in throughput and delay.

关 键 词：空分复用 方向性天线 时隙分配 

分 类 号：TP393.02[自动化与计算机技术—计算机应用技术]