Computer Science ›› 2017, Vol. 44 ›› Issue (12): 90-93.doi: 10.11896/j.issn.1002-137X.2017.12.018

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Research on Frame Aggregation Algorithm of Wireless LAN Based on Effective Capacity Link Model

TONG Wang-yu and ZHANG Ying-jiang   

  • Online:2018-12-01 Published:2018-12-01

Abstract: In order to provide statistical delay guarantees in the case of link quality fluctuations,a novel frame aggregation algorithm was proposed,which can be used in high speed IEEE802.11 wireless local area network.First,the QoS is guaranteed by the form of the target delay bound and the timeout probability,and it is considered as an optimization problem to construct the effective capacity model.Then,a simple formula is derived by applying the appropriate approxi-mation,which is solved using a proportional integral derivative (PID) controller.The proposed PID controller aggregation algorithm can independently adapt to the time limit of each link,and this only needs to be implemented in the transmitter side (such as access to AP),without the need for medium access control (MAC) to make any changes.NS-3 si-mulation results show that compared with the earliest deadline first algorithm,the proposed scheme has a better perfor-mance.

Key words: Effective capacity,Frame aggregation,IEEE802.11,Wireless local area network,PID controller,Link sche-duling,MAC,QoS

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