计算机科学 ›› 2017, Vol. 44 ›› Issue (12): 90-93.doi: 10.11896/j.issn.1002-137X.2017.12.018
童旺宇,张颖江
TONG Wang-yu and ZHANG Ying-jiang
摘要： 为了在链路质量波动的情况下提供统计的延迟保证,提出一种 可应用于高速IEEE802.11无线局域网的新型帧聚合算法。首先,通过目标延迟界限和超时概率的形式来表示QoS保证,并将其视作一个优化问题来构建有效容量模型。然后,应用适当的近似值推导出一个简单的公式,并通过使用比例-积分-微分(PID)控制器来求解。提出的PID控制器聚合算法能够独立地适应每个链接的时间限度,而这只需要在发射机端(如接入AP)就可以实现,无需对介质访问控制(MAC)做出任何改变。NS-3模拟结果显示,相比于最早到期优先算法,所提算法更胜一筹,表现出更加良好的性能。
| [1] LIU J,YAO M,QIU Z.Enhanced Two-Level Frame Aggregation with Optimized Aggregation Level for IEEE 802.11n WLANs[J].IEEE Communications Letters,2015,19(12):1. [2] NOMA A M,OTHMAN M,LUN K Y,et al.Two-Level FramesAggregation with Enhanced A-MSDU for IEEE 802.11n WLANs[J].Wireless Personal Communications,2015,82(3):1601-1614. [3] HONG K,KIM J P,KIM M S,et al.Channel measurement-based access point selection in IEEE 802.11 WLANs[J].Pervasive & Mobile Computing,2016,30(C):58-70. [4] GHAHFAROKHI B S.Distributed Q.E-aware channel assignment algorithms for IEEE 802.11 WLANS[J].Wireless Networks,2014,1(1):1-14 . [5] BELLALTA B.IEEE 802.11ax:High-efficiency WLANS[J].IEEE Wireless Communications,2015,23(1):38-46. [6] SARRET M G,ASHAT J S,MOGENSEN P,et al.A Multi-QoS Aggregation Mechanism for Improved Fairness in WLAN[J].Vehicular Technology Conference IEEE,2013,14(6):1-5. [7] SHAO X M.Study of 802.11n IEEE frame aggregation mechanism [D].Tianjin:Tianjin University,2012.(in Chinese) 邵新明.IEEE 802.11n帧聚合机制的研究[D].天津:天津大学,2012. [8] WU D,NEGI R.Effective capacity:a wireless link model forsupport of quality of service[J].IEEE Transactions on Wireless Communications,2003,2(4):630-643. [9] FERNG H W,LEONOVICH A.Periods Scheduling Under the HCCA Mode of IEEE 802.11e[J].IEEE Transactions on Wireless Communications,2014,13(12):7037-7049. [10] LIU W J,FENG K T,TSENG P H.Optimality of Frame Aggregation-Based Power-Saving Scheduling Algorithm for Broadband Wireless Networks[J].IEEE Transactions on Wireless Communications,2014,13(2):577-591. [11] DAVY A,MESKILL B,DOMINGO-PASCUAL J.An Empirical Study of Effective Capacity Throughputs in 802.11 Wireless Networks[C]∥2012 IEEE Global Communications Conference (GLOBECOM).IEEE,2012:1770-1775. [12] CHEN K F,LV N,ZHANG W L.Frame structure optimization and analysis of fast dynamic time slot allocation MAC protocol [J].Computer Engineering and Application,2015,51(15):68-74.(in Chinese) 陈柯帆,吕娜,张伟龙.快速动态时隙分配MAC协议的帧结构优化与分析[J].计算机工程与应用,2015,51(15):68-74. [13] VIJAYAREKHA K,RAO C M.Frame aggregation and fragment retransmission for very high throughput WLANs[J].International Journal of Applied Engineering Research,2015,10(10):25607-25616. [14] GE Q,BAI G W,SHEN H,et al.Opportunistic network coding mechanism for wireless network link quality aware[J].Compu-ter Science,2013,40(11):29-34.(in Chinese) 葛青,白光伟,沈航,等.无线网络链路质量感知的机会网络编码机制[J].计算机科学,2013,40(11):29-34. [15] CHEN G X.Exploring on Anti-jamming of Outdoor Signals in High-Speed Wireless Local Area Network[J].Journal of Chongqing University of Technology (Natural Science),2011,5(7):92-95.(in Chinese) 陈国先.高速无线局域网室外信号抗干扰探讨[J].重庆理工大学学报(自然科学),2011,25(7):92-95. |
| No related articles found! |
|
||
首页