A link adaptation scheme for improving voice quality and overall throughput over WLANs

Tüysüz, Mehmet Fatih; Mantar, Hacı Ali

doi:10.1109/icimu.2011.6122772

Cited by 2 publications

(1 citation statement)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As a result, each terminal can obtain better throughput depending on the radio wave environments. The AP selection [4] and placement problems [5] have been investigated relative to wireless network design. The AP throughput (the quantity of data that an AP can receive including retransmission packets) can be used as a metric for these problems.…”

Section: Introductionmentioning

confidence: 99%

Improvement of Throughput Prediction Scheme Considering Terminal Distribution in Multi-Rate WLAN Considering Both CSMA/CA and Frame Collision

Hamamoto

Takano

Obata

et al. 2016

IEICE Trans. Inf. & Syst.

View full text Add to dashboard Cite

SUMMARYWireless Local Area Networks (WLANs) based on the IEEE 802.11 standard have been increasingly used. Access Points (APs) are being established in various public places, such as railway stations and airports, as well as private residences. Moreover, the rate of public WLAN services continues to increase. Throughput prediction of an AP in a multi-rate environment, i.e., predicting the amount of receipt data (including retransmission packets at an AP), is an important issue for wireless network design. Moreover, it is important to solve AP placement and selection problems. To realize the throughput prediction, we have proposed an AP throughput prediction method that considers terminal distribution. We compared the predicted throughput of the proposed method with a method that uses linear order computation and confirmed the performance of the proposed method, not by a network simulator but by the numerical computation. However, it is necessary to consider the impact of CSMA/CA in the MAC layer, because throughput is greatly influenced by frame collision. In this paper, we derive an effective transmission rate considering CSMA/CA and frame collision. We then compare the throughput obtained using the network simulator NS2 with a prediction value calculated by the proposed method. Simulation results show that the maximum relative error of the proposed method is approximately 6% and 15% for UDP and TCP, respectively, while that is approximately 17% and 21% in existing method.

show abstract

Section: Introductionmentioning

confidence: 99%