基于无线网络编码的信道利用率研究

为了使无线随机网络编码策略更好适用于较大数据量的传输要求,在无线信道的广播特性的基础上加入了将数据分块处理,并考虑了额外开销对信道利用率的影响.通过对分块传输模型的分析,确认信道利用率与分块的大小紧密相关,为了在通信前选择一个适当的分块大小以获得更高的信道利用率,给出了一种计算最优数据块大小的方法.仿真结果表明:该方法简单可行,使用该方法选择数据块大小后,信道利用率将十分接近其上限值.

Channel Utilization Based on Wireless Network Coding

To make the wireless network coding scheme fit for large data transmission well, the processing of dividing data into blocks is added into the scheme. After the analyzing the transmission model of the blocks, it is found that channel uti-lization and the size of the block is closely related. In order to transmit the data with an appropriate block size to get higher channel utilization, a block size selection approach is given to maximize the channel utilization. The approach is simple and feasible, and by the simulations, after using this approach, the channel utilization will be very close to its upper limit.