通信学报
通信學報
통신학보
JOURNAL OF CHINA INSTITUTE OF COMMUNICATIONS
2013年
3期
44-52
,共9页
机会网络%节点连接态势%时序图模型%消息转发效用值
機會網絡%節點連接態勢%時序圖模型%消息轉髮效用值
궤회망락%절점련접태세%시서도모형%소식전발효용치
opportunistic networks%connection status%temporal graph matrix%message forwarding weight
利用节点保存的相遇历史信息,提出一种节点连接态势感知的消息传输策略,通过建立时序图模型估计节点间的连接态势,以时延、投递率以及负载率为联合优化目标参数,采用均衡和量化方法,为消息分布式地选择最佳中继节点.仿真结果表明,所提出的消息传输策略能够有效降低网络负载48%以上,并改善消息投递率和平均时延性能.
利用節點保存的相遇歷史信息,提齣一種節點連接態勢感知的消息傳輸策略,通過建立時序圖模型估計節點間的連接態勢,以時延、投遞率以及負載率為聯閤優化目標參數,採用均衡和量化方法,為消息分佈式地選擇最佳中繼節點.倣真結果錶明,所提齣的消息傳輸策略能夠有效降低網絡負載48%以上,併改善消息投遞率和平均時延性能.
이용절점보존적상우역사신식,제출일충절점련접태세감지적소식전수책략,통과건립시서도모형고계절점간적련접태세,이시연、투체솔이급부재솔위연합우화목표삼수,채용균형화양화방법,위소식분포식지선택최가중계절점.방진결과표명,소제출적소식전수책략능구유효강저망락부재48%이상,병개선소식투체솔화평균시연성능.
@@@@A novel connection status aware cost efficient message transmission mechanism (CSAMT) was proposed. The presented mechanism constructed a dynamic temporal graph matrix based on historical data stored in the cache of the peers to estimate the connection status. Furthermore, the delay, delivery ratio and overhead together were selected as ob-ject optimizing parameters, and then the preferable relay peers could be distributively chosen by adopting equalization and quantification schemes proposed. Numerical results show that CSAMT mechanism can efficiently reduce overhead for more than 48%while the message delivery ratio and latency are improved also.