CAJ | 학술논문

为了提高无线自组织网络的通信性能,针对当前网络信道接入机制存在的不足,提出一种基于线性网络编码的信道接入机制( LNC)。首先对传统网络信道接入机制的工作原理和缺陷进行分析,然后采用线性网络编码方式提高数据包传输效率,最后运用马尔科夫链模型对LNC进行数学建模,并通过仿真实验对其性能进行分析。仿真实验结果表明,相对于传统网络信道接入机制,LNC不仅提高了网络的吞吐量,降低了节点的数据包丢失率,而且提高了信道利用率。
위료제고무선자조직망락적통신성능,침대당전망락신도접입궤제존재적불족,제출일충기우선성망락편마적신도접입궤제( LNC)。수선대전통망락신도접입궤제적공작원리화결함진행분석,연후채용선성망락편마방식제고수거포전수효솔,최후운용마이과부련모형대LNC진행수학건모,병통과방진실험대기성능진행분석。방진실험결과표명,상대우전통망락신도접입궤제,LNC불부제고료망락적탄토량,강저료절점적수거포주실솔,이차제고료신도이용솔。
In order to improve the communication performance of the wireless self-organized network, aiming at the deficiency of current network channel access mechanism, this paper puts forward a channel access mechanism based on linear network coding ( LNC) . The working principle and the defects of traditional network channel access mechanism are analyzed, and then the linear network coding method is used to improve data packet transmission efficiency, finally Markov chain model is used to construct the mathematical model of LNC, and the performance is tested by simulation experiment. The simulation results show that compared with the traditional network channel access mechanism, LNC not only improves the network throughput and reduces the node’s packet loss rate, but also increases the channel utilization rate.