计算机应用
計算機應用
계산궤응용
COMPUTER APPLICATION
2014年
z1期
9-11,14
,共4页
随机线性网络编码%数据分发%车载自组织网络%簇%粒子群优化
隨機線性網絡編碼%數據分髮%車載自組織網絡%簇%粒子群優化
수궤선성망락편마%수거분발%차재자조직망락%족%입자군우화
random linear network coding%data dissemination%Vehicular Ad hoc NETwork ( VANET)%cluster%Particle Swarm Optimization (PSO)
为了提高车载自组网数据分发效率与可靠性，提出了基于网络编码的车载自组网数据分发算法DDR。针对所有节点均可对事件进行请求与转发造成的网络拥塞问题，采用基于分簇的代理选择方法，利用粒子群优化簇头选举，由簇头广播编码信息。仿真实验表明，与现有分发机制比较，该算法具有更高的数据包投递率及较低的通信数据量，能更好地适应城市环境。
為瞭提高車載自組網數據分髮效率與可靠性，提齣瞭基于網絡編碼的車載自組網數據分髮算法DDR。針對所有節點均可對事件進行請求與轉髮造成的網絡擁塞問題，採用基于分簇的代理選擇方法，利用粒子群優化簇頭選舉，由簇頭廣播編碼信息。倣真實驗錶明，與現有分髮機製比較，該算法具有更高的數據包投遞率及較低的通信數據量，能更好地適應城市環境。
위료제고차재자조망수거분발효솔여가고성，제출료기우망락편마적차재자조망수거분발산법DDR。침대소유절점균가대사건진행청구여전발조성적망락옹새문제，채용기우분족적대리선택방법，이용입자군우화족두선거，유족두엄파편마신식。방진실험표명，여현유분발궤제비교，해산법구유경고적수거포투체솔급교저적통신수거량，능경호지괄응성시배경。
In order to improve the efficiency and reliability of data dissemination in Vehicular Ad hoc NETwork ( VANET) , this paper puts forward a data dissemination algorithm based on network coding called DDR. To address the network congestion caused by the fact that all the nodes can request and forward data, a clustering-based Agent selection approach was adopted, proposing a PSO based cluster-head election in order to let cluster-head broadcast the encoded blocks. Compared with existing solutions, DDR better suits the city scenario, as the simulations have shown, for it can maintain a higher delivery rate and lower communication traffic.
