Delay-Based Admission Control Using Fuzzy Logic for OFDMA Broadband Wireless Networks
Delay-Based Admission Control Using Fuzzy Logic for OFDMA Broadband Wireless Networks
复制标题
DOI：
10.1109/icc.2006.255539
复制
发表时间：
2006-12
期刊：
影响因子：
--
通讯作者：
D. Niyato;E. Hossain
中科院分区：
文献类型：
--
作者：
D. Niyato;E. Hossain
针对正交频分多址（OFDMA）宽带无线网络，提出了一种基于模糊逻辑的接入控制算法。所考虑的系统兼容IEEE 802.16标准的TDD-OFDMA操作模式。提出的允许控制算法考虑流量的各种流量源参数（即正常速率、峰值速率和峰值速率概率）和数据包级延迟要求来决定是否接受传入连接。我们建立了一个排队模型来研究物理层参数（如信道质量和分配的子信道数量）对无线电链路层性能（如平均队列长度、延迟和吞吐量）的影响。基于这些排队性能指标，定义了模糊逻辑接纳控制中资源分配的推理规则。通过仿真分析了所提出的接纳控制算法的性能，并与传统方案进行了比较。
In this paper, we present a fuzzy logic-based admission control algorithm for orthogonal frequency division multiple access (OFDMA)-based broadband wireless networks. The system under consideration is compatible with the IEEE 802.16 standard in the TDD-OFDMA mode of operation. The proposed admission control algorithm considers various traffic source parameters (i.e., normal rate, peak rate and probability of peak rate) and packet-level delay requirements for the traffic to decide whether an incoming connection can be accepted or not. We formulate a queueing model to investigate the impacts of physical layer parameters (e.g., channel quality and number of allocated subchannels) on the radio link layer performances (e. g., average queue length, delay and throughput). The inference rules for resource allocation in the proposed fuzzy logic admission control are defined based on these queueing performance measures. The performance of the proposed admission control algorithm is analyzed by simulations and also compared to those of the traditional schemes.