CAJ | 학술논문

提出一种编码感知的机会路由算法---CAR．它利用机会传输增加编码机会，并通过引入一系列参数衡量“机会”好坏，创造性地解决了交叉数据流下机会路由转发节点的选取问题，解决了流间网络编码和机会路由算法结合时数据包上下跳节点“已知”与“未知”的矛盾．CAR算法能够最大化每次编码传输中原始数据包的个数，仿真表明，它能够显著提高可靠传输协议以及整个网络的传输性能．通过机会传输实现多用户分集，可显著增加流间网络编码机会，引入的转发延时也可增加流间网络编码机会．
제출일충편마감지적궤회로유산법---CAR．타이용궤회전수증가편마궤회，병통과인입일계렬삼수형량“궤회”호배，창조성지해결료교차수거류하궤회로유전발절점적선취문제，해결료류간망락편마화궤회로유산법결합시수거포상하도절점“이지”여“미지”적모순．CAR산법능구최대화매차편마전수중원시수거포적개수，방진표명，타능구현저제고가고전수협의이급정개망락적전수성능．통과궤회전수실현다용호분집，가현저증가류간망락편마궤회，인입적전발연시야가증가류간망락편마궤회．
A Coding-Aware opportunistic Routing (CAR)algorithm is proposed.It utilizes oppor-tunistic forwarding to create network coding opportunities.A new metric is introduced in CAR to evaluate the quality of“opportunity”and CAR creatively solves the problem of next-hop selection among overlapping data flows.Meanwhile,the difficult problem in incorporating network coding into opportunistic routing is also solved by CAR.CAR maximizes the number of native packets coded in each single transmission.Simulations demonstrate that CAR greatly improves the per-formance of reliable transport protocol as well as the whole network.Opportunistic forwarding can increase network coding opportunities with multiuser diversity.The introduced forwarding delays also add extra network coding chances.