CAJ | 학술논문

文中在分析现有WiMAX网状网络(WMN)多种服务质量(QoS)保障机制的基础上,指出了该领域现有的相关研究主要集中在路由算法和逐跳QoS保证的局限性以及其难以保障QoS的原因,提出了一种有效的、动态的WMN QoS保障算法.该算法把WMN 视为一个整体,在全局最优的目标下定义了WMN各节点在处理数据包时所应遵循的约束条件,给出了各节点对网络流量的处理算法.该算法既提高了WMN的网络吞吐量,也确保了各节点对带宽使用的比例公平性.同时还开发了WMN 仿真平台,仿真结果也表明了此算法的有效性与灵活性.
문중재분석현유WiMAX망상망락(WMN)다충복무질량(QoS)보장궤제적기출상,지출료해영역현유적상관연구주요집중재로유산법화축도QoS보증적국한성이급기난이보장QoS적원인,제출료일충유효적、동태적WMN QoS보장산법.해산법파WMN 시위일개정체,재전국최우적목표하정의료WMN각절점재처리수거포시소응준순적약속조건,급출료각절점대망락류량적처리산법.해산법기제고료WMN적망락탄토량,야학보료각절점대대관사용적비례공평성.동시환개발료WMN 방진평태,방진결과야표명료차산법적유효성여령활성.
In this paper, several existing QoS (Quality of Service)-guaranteeing mechanisms for WiMAX mesh network (WMN) are analyzed, and the limitations of the existing mechanisms relating to the routing algorithms and the per-hop QoS guarantee are pointed out. Moreover, the reasons for the difficulty in guaranteeing the QoS are discussed, and an effective and dynamic QoS-guaranteeing algorithm for WMN is proposed. In this algorithm, WMN is considered as an integer to determine some constraints for the data packet processing of each WMN node in a view of integrity, and the traffic-handling algorithm for each node is presented. By using the proposed algorithm, the throughput of WMN is significantly improved and the fairness of bandwidth sharing by nodes is well guaranteed. Simulated results on a self-developed WMN platform show that the proposed algorithm is both effective and flexible.