通信技术
通信技術
통신기술
COMMUNICATIONS TECHNOLOGY
2014年
4期
401-405
,共5页
干扰感知%路由%负载均衡%无线Mesh网络
榦擾感知%路由%負載均衡%無線Mesh網絡
간우감지%로유%부재균형%무선Mesh망락
wireless mesh networks%interferences aware%load balancing%routing protocol
无线信道干扰和负载分布的不均衡严重影响无线Mesh网络吞吐量、端到端延时和资源利用率。在已有基于信噪比和邻居节点个数的干扰模型基础上,进一步研究了无线Mesh网络的链路干扰。在综合考虑了无线Mesh网络流间干扰和和流内干扰的基础上,提出路由判据PIL( Path Interfer-ence Level)。在此基础上,提出一种新的基于干扰感知的负载均衡路由协议IA-DSR( Interference-Aware DSR)。 IA-DSR考虑无线网络拥塞并选择受到干扰最小的路径。仿真结果表明,在不显著增加开销的情况下,IA-DSR可以有效地提高网络的整体吞吐量,降低网络端到端时延和丢包率。
無線信道榦擾和負載分佈的不均衡嚴重影響無線Mesh網絡吞吐量、耑到耑延時和資源利用率。在已有基于信譟比和鄰居節點箇數的榦擾模型基礎上,進一步研究瞭無線Mesh網絡的鏈路榦擾。在綜閤攷慮瞭無線Mesh網絡流間榦擾和和流內榦擾的基礎上,提齣路由判據PIL( Path Interfer-ence Level)。在此基礎上,提齣一種新的基于榦擾感知的負載均衡路由協議IA-DSR( Interference-Aware DSR)。 IA-DSR攷慮無線網絡擁塞併選擇受到榦擾最小的路徑。倣真結果錶明,在不顯著增加開銷的情況下,IA-DSR可以有效地提高網絡的整體吞吐量,降低網絡耑到耑時延和丟包率。
무선신도간우화부재분포적불균형엄중영향무선Mesh망락탄토량、단도단연시화자원이용솔。재이유기우신조비화린거절점개수적간우모형기출상,진일보연구료무선Mesh망락적련로간우。재종합고필료무선Mesh망락류간간우화화류내간우적기출상,제출로유판거PIL( Path Interfer-ence Level)。재차기출상,제출일충신적기우간우감지적부재균형로유협의IA-DSR( Interference-Aware DSR)。 IA-DSR고필무선망락옹새병선택수도간우최소적로경。방진결과표명,재불현저증가개소적정황하,IA-DSR가이유효지제고망락적정체탄토량,강저망락단도단시연화주포솔。
The interference among communication links and the characteristics of load imbalance plays sig-nificant roles in the throughput, latency and resource efficiency of wireless mesh networks. The link inter-ference in wireless mesh network is investigated based on the interference model with respect to SNR and sum of neighbor. On the basis of existing research, a routing metric PIL ( Path Interference Level) is pro-posed, considering inter-flow interference and intra-flow interference. This paper puts forward an IA-DSR ( Interference-Aware DSR) routing protocol which chooses the path of least interference. The NS2 simulation results show that, without obvious increase of overhead, IA-DSR can effectively improve the o-verall throughput of the network, and reduce end-to-end delay.
