CAJ | 학술논문

在分析了现有带宽分配算法的基础上,结合已有算法的优缺点,提出一种新的区分业务等级的、保证服务质量的动态带宽分配算法.新算法动态确定轮询周期,分配给高优先级业务请求带宽,按权重对中、低优先级业务进行带宽分配,并考虑到了剩余带宽的再分配.经仿真验证:该方案充分保证了高优先级业务的带宽需求,考虑到了低等级业务可能分不到带宽的情况,体现了带宽分配的公平性,全面提高了上行带宽的利用率,提高了系统的服务质量保证.
재분석료현유대관분배산법적기출상,결합이유산법적우결점,제출일충신적구분업무등급적、보증복무질량적동태대관분배산법.신산법동태학정륜순주기,분배급고우선급업무청구대관,안권중대중、저우선급업무진행대관분배,병고필도료잉여대관적재분배.경방진험증:해방안충분보증료고우선급업무적대관수구,고필도료저등급업무가능분불도대관적정황,체현료대관분배적공평성,전면제고료상행대관적이용솔,제고료계통적복무질량보증.
Dynamic bandwidth allocation of the uplink is a hot technique in EPON system. By analyzing the merits and weaknesses of the existing algorithms, a novel dynamic bandwidth allocation algorithm is proposed, which supports differentiating service levels and guarantees the quality of the service. The new algorithm determines the polling cycle, allocates the requested bandwidth to high-priority services, and allocates bandwidth to middle and low priority sevices by weight. It also takes the reallocation of the excess bandwidth into account. Simulation results show that this scheme can meet the bandwidth need of high priority service while taking low priority service into account. The algorithm makes the distribution of system bandwidth more rational and improves the efficiency of up-link bandwidth and the quality of service.