科技通报
科技通報
과기통보
BULLETIN OF SCIENCE AND TECHNOLOGY
2014年
11期
81-85
,共5页
机会网络%相遇信息%转发概率
機會網絡%相遇信息%轉髮概率
궤회망락%상우신식%전발개솔
opportunistic networks%meeting information%forwarding probability
在分析现有机会网络转发策略的基础上，根据Prophet和Spray and wait协议的特点提出一种相遇信息估算转发概率的机会网络路由协议（BPAS），BPAS以节点相遇的频率、相遇的连通时长和断连时长作为参量引入转发概率的计算，消息转发给转发概率大的节点，使得消息朝更靠近目的节点方向发送。仿真结果表明，BPAS协议与Epidemic协议、Prophet协议和Spray and wait协议相比，能获得更高的消息交付率和更低的通信开销，消息总转发次数更少。实验证明BPAS协议能适应于节点密度较大的机会网络环境。
在分析現有機會網絡轉髮策略的基礎上，根據Prophet和Spray and wait協議的特點提齣一種相遇信息估算轉髮概率的機會網絡路由協議（BPAS），BPAS以節點相遇的頻率、相遇的連通時長和斷連時長作為參量引入轉髮概率的計算，消息轉髮給轉髮概率大的節點，使得消息朝更靠近目的節點方嚮髮送。倣真結果錶明，BPAS協議與Epidemic協議、Prophet協議和Spray and wait協議相比，能穫得更高的消息交付率和更低的通信開銷，消息總轉髮次數更少。實驗證明BPAS協議能適應于節點密度較大的機會網絡環境。
재분석현유궤회망락전발책략적기출상，근거Prophet화Spray and wait협의적특점제출일충상우신식고산전발개솔적궤회망락로유협의（BPAS），BPAS이절점상우적빈솔、상우적련통시장화단련시장작위삼량인입전발개솔적계산，소식전발급전발개솔대적절점，사득소식조경고근목적절점방향발송。방진결과표명，BPAS협의여Epidemic협의、Prophet협의화Spray and wait협의상비，능획득경고적소식교부솔화경저적통신개소，소식총전발차수경소。실험증명BPAS협의능괄응우절점밀도교대적궤회망락배경。
Based on the analysis to the existing forwarding strategy,according to Prophet and Spray and wait, proposed a routing protocol(BPAS) for opportunistic networks evaluate forwarding probability with information of meeting. Which used the value of node encounter frequency,connectivity duration and disconnected duration as elements to estimate the probability of message forwarding. For the purpose of message can close to destination node, message forward to the message have higher forwarding probability. Simulation results show that the proposed routing algorithm can achieve higher rate of message delivering and reduce communication cost and reduce the number of message relayed than the relative existing algorithm,Epidemic, Prophet, Spray and wait.And BPAS can applied the environment of opportunistic networks have high node density.
