HCCA Scheduler Design for Guaranteed QoS in IEEE 802.11e Based WLANs
HCCA Scheduler Design for Guaranteed QoS in IEEE 802.11e Based WLANs
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用于在基于 IEEE 802.11e 的 WLAN 中保证 QoS 的 HCCA 调度器设计
DOI：
10.1109/wcnc.2007.290
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发表时间：
2007
期刊：
影响因子：
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通讯作者：
V. Bhargava
中科院分区：
文献类型：
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作者：
M. M. Rashid;E. Hossain;V. Bhargava
由IEEE802.11TGe制定的IEEE802.11e标准旨在通过引入混合协调功能来为流行的基于802.11的无线局域网提供服务质量支持。作为HCF的一部分，HCF控制的信道接入(HCCA)是一种用于参数化服务质量的媒体接入机制，适用于对服务质量有严格要求的多媒体应用。该标准还定义了调度和准入控制方案，以补充HCCA满足这些保证。然而，参考调度器有几个限制，使得它不能为许多多媒体应用提供服务质量保证。在本文中，我们提出了一种新的调度方案，它克服了这些限制，提供了关键的性能保证。仿真实验表明，该方案能够有效地满足多种多媒体应用的服务质量保证。
The IEEE 802.11e standard developed by IEEE 802.11TGe intends to provide the quality of service (QoS) support for the popular 802.11 based wireless local area networks (WLAN) through the introduction of hybrid coordination function (HCF). The HCF controlled channel access (HCCA) designed as a part of HCF is the medium access mechanism for parameterized QoS and is suitable for multimedia applications requiring hard QoS guarantees. The standard also defines scheduling and admission control schemes to complement HCCA in meeting these guarantees. However, the reference scheduler has several limitations which render it incapable of providing QoS guarantees to many multimedia applications. In this paper, we propose a new scheduling scheme which overcomes these limitations to provide critical performance guarantees. Simulation experiments show that the proposed scheme successfully enables the HCCA to fulfill the QoS guarantees for wide variety of multimedia applications.
影响因子：
6.7
作者：
通讯作者：
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