WLC15-3: A Service Curve Based Scheduling Algorithm for QoS Support in 802.11e Wireless LANs
WLC15-3: A Service Curve Based Scheduling Algorithm for QoS Support in 802.11e Wireless LANs
复制标题
WLC15-3：基于服务曲线的调度算法，支持 802.11e 无线 LAN 中的 QoS
DOI：
10.1109/glocom.2006.700
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发表时间：
2006
期刊：
影响因子：
--
通讯作者：
C. Siew
中科院分区：
文献类型：
--
作者：
Daojun Xue;Yang Qin;C. Siew
新的IEEE 802.1ie标准旨在为WLAN中不同类型的多媒体应用提供QoS保证。IEEE 802.11e定义了两种信道接入机制：HCCA和EDCA。基本上，HCCA比EDCA更适合于提供严格的QoS保证，因为其集中的TXOP分配方式和在信标间隔期间的任何时间发起传输的增强能力。然而，HCCA调度方案在现有标准中还不完善，仅在CBR实时业务下表现良好。在本文中，我们提出了一种调度算法和接纳控制策略的基础上的服务曲线理论，可以处理突发业务，同时严格的延迟范围可以提供给业务流。我们进行了大量的模拟来评估我们的计划和实验结果表明，HCCA的参考调度算法有很好的改善。
The new IEEE 802.lie standard is designed to provide QoS guarantees to different types of multimedia applications in WLAN. IEEE 802.lie defines two channel access mechanisms: HCCA and EDCA. Basically, HCCA is more suitable for providing strict QoS guarantees than EDCA because of its centralized TXOP allocation manner and enhanced capability of initiating a transmission at any time during the beacon interval. Nevertheless, the HCCA scheduling scheme is not yet consummate in the current standard and it only performs well under CBR real-time traffics. In this paper, we propose a scheduling algorithm and admission control policy based on Service Curve theory that can deal with bursty traffic while strict delay bounds can be provided for traffic streams. We conduct extensive simulations to evaluate our scheme and the experiment results show good improvements upon the reference scheduling algorithm of HCCA.