CAJ | 학술논문

在无线广播网链路状态不同和丢包率高的条件下，基于机会网络编码的数据分发策略面临传输效率低和计算复杂度高的问题。针对这一问题，该文提出一种新的基于机会网络编码的加权广播重传(Weighted Opportunistic Network Coding Retransmission, WONCR)方案。该方案通过构建加权数据包分布矩阵(Weighted Packet Distribution Matrix, WPDM)，在重传过程中采用新的调度算法进行编码数据包的选取，并将选取的数据包进行XOR编码后再重传。机会仿真结果表明，WONCR方案提高了传输效率，且计算开销较小，实现了无线广播网中高效、可靠的数据分发。
재무선엄파망련로상태불동화주포솔고적조건하，기우궤회망락편마적수거분발책략면림전수효솔저화계산복잡도고적문제。침대저일문제，해문제출일충신적기우궤회망락편마적가권엄파중전(Weighted Opportunistic Network Coding Retransmission, WONCR)방안。해방안통과구건가권수거포분포구진(Weighted Packet Distribution Matrix, WPDM)，재중전과정중채용신적조도산법진행편마수거포적선취，병장선취적수거포진행XOR편마후재중전。궤회방진결과표명，WONCR방안제고료전수효솔，차계산개소교소，실현료무선엄파망중고효、가고적수거분발。
A novel Opportunistic-Network-Coding based Weighted broadcasting Retransmission (WONCR) approach is proposed to deal with the problem of data dissemination scheme based on opportunistic network coding in wireless broadcasting networks, which are under the conditions of high packet loss probability and different state of links. This approach implements a new scheduling algorithm based on the Weighted Packet Distribution Matrix (WPDM) to realize the selection of coded packets before XOR coding and retransmitting. The analysis and simulations show that the transmission efficiency is improved significantly and the computational complexity is low. Hence, the high-efficiency and reliable data dissemination are achieved in wireless broadcasting networks.