TCP fairness issues in IEEE 802.11 wireless LANs

Wu, Qian; Gong, Mingwei; Williamson, Carey

doi:10.1016/j.comcom.2008.02.013

Cited by 23 publications

(19 citation statements)

References 24 publications

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“…However, if it is an uplink flow, then the QAP will poll the QSTA before packet transmission. It could be noticed that, since all the flows (uplink or downlink) are treated similarly in the selection process, the intrinsic unfairness of 802.11 networks between uplink and downlink streams [8] is resolved.…”

Section: Adaption Of Mss Scheduler To 80211e Hccamentioning

confidence: 99%

An 802.11e HCCA scheduler with an end-to-end quality aware territory method

Navarro-Ortiz¹,

Ameigeiras²,

Ramos-Muñoz³

et al. 2009

Computer Communications

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Section: Adaption Of Mss Scheduler To 80211e Hccamentioning

confidence: 99%

An 802.11e HCCA scheduler with an end-to-end quality aware territory method

Navarro-Ortiz¹,

Ameigeiras²,

Ramos-Muñoz³

et al. 2009

Computer Communications

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“…For wireless access point, as one of the most advanced Linux WLAN drivers, the latest MadWifi driver version (0.9.4) fixes the buffer size as 250 packets [21]. Thus, the same as the reference [6][7][8][9][10][11][12], we adopt the packet-sized mode as the default buffer implementation. …”

Section: Implementation Issuesmentioning

confidence: 99%

A buffer management algorithm for improving up/down transmission congestion protocol fairness in IEEE 802.11 wireless local area networks

Huang

Wang

2012

Int J Communication

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SUMMARYThe fair allocation of the resources is an important issue in wireless local area network (WLAN) because all wireless nodes compete for the same wireless radio channel. When uplink and downlink transmission congestion protocol (TCP) flows coexist in WLAN, the network service is biased toward the uplink TCP flows, and the downlink TCP flows tend to starve. In this article, we investigate the special up/down TCP unfairness problem and point out that the direct cause is the uplink acknowledgement (ACK) packets occupy most buffer space of access point. We thus propose a buffer management algorithm to ensure the fairness among uplink and downlink TCP flows. In order to limit the greedy behavior of ACK packets, the proposed algorithm adjusts the maximum size of buffer allocated for the ACK packets. Analysis and simulation results show that the proposed solution not only provides the fairness but also achieves 10-20% lower queue delay and higher network goodput than the other solutions.

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“…Another QoS problem reported (see [5]) is that of unfairness between upload and download TCP controlled bulk transfers for practical sizes of the AP buffer (which stores the packets contending for access to the wireless medium). Real time interactive traffic such as that due to voice over IP (VoIP) telephony is known to perform poorly in the presence of TCP traffic in WLANs.…”

mentioning

confidence: 97%

“…These solutions are based on queueing and scheduling policies to be implemented in an AP, or on the regulation of MAC parameters, or on changes in the client drivers. A variety of techniques that employ modifications to the AP Software are: selective packet marking (Wu et al [9]), weighted round robin service in the AP (Vacirca et al [10]), TBF (Blefari-Melazzi et al…”

mentioning

confidence: 99%