Payload length and rate adaptation for multimedia communications in wireless LANs

Choudhury, Sayantan; Gibson, J.D.

doi:10.1109/jsac.2007.070515

Cited by 40 publications

(7 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Khan et al (2008) proposed a CLD framework for rate adaptation in 802.11 networks. This rate adaptation approach is different from the other approaches reported in the literature (Choudhury & Gibson, 2007;Lee & Chung, 2008;Xia, Jin, & Hamdi, 2007). In Khan's solution, the rate is adapted to the changing channel state, application preferences and underlying MAC sublayer timing constraints.…”

Section: A Review Of Literaturementioning

confidence: 99%

“…The WFS-ARC adjusts the data rate parameters at the MAC layer, based on the available channel state information at the receiver provided by the PHY layer. Unlike other CLD approaches where the rate adaptation is performed at the transmitter, WFS-ARC rate adaptation is performed at the receiver (Choudhury & Gibson, 2007). Ge et al (2007) proposed a CLD protocol to provide reliable and efficient multicast wireless communications.…”

Section: A Review Of Literaturementioning

confidence: 99%

“…Rate optimization of network models with single-input-single-output (SISO) and multiple-input-multiple-output (MIMO) links are analyzed. Choudhury and Gibson (2007) developed a CLD to optimize single user throughput by considering the transmitted bit rate and payload length as a function of channel conditions for both additive white noise and Nakagami-m fading channels. Payload length is used as an optimization parameter and the proposed CLD jointly optimizes payload length and data rate for a given channel condition.…”

Section: A Review Of Literaturementioning

confidence: 99%

“…• Rayleigh channel predictability (Pham et al, 2005) • Rate adaptation and payload length (Choudhury & Gibson, 2007) • Opportunistic cooperative MAC (Yuan et al, 2007)…”

Section: Phy-macmentioning

confidence: 99%

See 3 more Smart Citations

Design and Evaluation of a Cross-Layer Framework for Improving 802.11 Networks

Sarkar

2013

International Journal of Business Data Communications and Networking

View full text Add to dashboard Cite

This paper reports on the design and evaluation of a class of cross-layer design (CLD) framework for improving the performance of 802.11-based wireless local area networks (WLANs). While various CLD approaches have been proposed for improving the performance of WLANs in recent years, the problem of efficient channel utilization, higher throughput, lower packet delay, and fairness has not been fully solved yet. To overcome the performance problems of 802.11, we propose a CLD framework which is based on a cross-layer medium access control (MAC) protocol called the channel-aware buffer unit multiple access (C-BUMA). In the framework, the radio propagation (i.e. physical layer) is combined with the MAC sub-layer to develop a robust cross-layer communication. By sharing channel information with the MAC protocol, the approach reduced unnecessary packet transmissions, and hence reduced bandwidth wastage and significantly improved the system performance. The proposed CLD method is evaluated by extensive simulation experiments. A comparison with 802.11 standards is provided. Results obtained show that the network achieves up to 13.5% higher throughput, 56% lower packet delay, 40% better fairness, and 38% lower packet dropping with the proposed CLD. We also found that the proposed CLD outperforms Pham’s CLD with respect to network throughput and packet dropping. The analysis and empirical results reported in this paper provide some insights into the design and evaluation of a CLD framework for improving data rate of 802.11 networks which may help researchers in this field to overcome the remaining design issues and challenges.

show abstract

Section: A Review Of Literaturementioning

confidence: 99%

Section: A Review Of Literaturementioning

confidence: 99%

Section: A Review Of Literaturementioning

confidence: 99%

“…• Rayleigh channel predictability (Pham et al, 2005) • Rate adaptation and payload length (Choudhury & Gibson, 2007) • Opportunistic cooperative MAC (Yuan et al, 2007)…”

Section: Phy-macmentioning

confidence: 99%

See 2 more Smart Citations

Design and Evaluation of a Cross-Layer Framework for Improving 802.11 Networks

Sarkar

2013

International Journal of Business Data Communications and Networking

View full text Add to dashboard Cite

show abstract

“…BUMA is implemented through minor modifications of DCF (IEEE Standards Association, 1999b). The design of BUMA was motivated by the key idea that a typical WLAN can increase throughput by sending a payload using fewer but longer packets (Choudhury & Gibson, 2007;Ergen & Varaiya, 2008;Xiao, 2004). With fewer packets used to deliver the same payload, proportionally less time is spent in the backoff state.…”

Section: The Proposed Buma Protocolmentioning

confidence: 99%

Improving WLAN Performance by Modifying an IEEE 802.11 Protocol

Sarkar

2011

International Journal of Wireless Networks and Broadband Technologies

View full text Add to dashboard Cite

One of the limitations of the IEEE 802.11 distributed coordination function (DCF) protocol is its low bandwidth utilization under medium-to-high traffic loads resulting in low throughput and high packet delay. To overcome performance problems, traditional IEEE 802.11 DCF (“DCF”) protocol is modified to the buffer unit multiple access (BUMA) protocol. The BUMA protocol achieves a better system performance by introducing a temporary buffer unit at the medium access control (MAC) layer to accumulate multiple packets and combine them into a single packet (with a header and a trailer) before transmission. This paper provides an in-depth performance evaluation (by simulation) of BUMA for multiuser ad hoc and infrastructure networks. Results obtained show that the BUMA is more efficient than that of DCF. The BUMA protocol is simple and its algorithm (software) can be upgraded to 802.11 networks requiring no hardware changes. The BUMA protocol is described and simulation results are presented to verify the performance.

show abstract

Optimized packet formation in multi‐level security wireless data acquisition networks

Younis¹,

Farrag²,

Lee³

et al. 2010

Security Comm Networks

View full text Add to dashboard Cite

The limited channel capacity and the varying propagation conditions of radio signals have motivated research for boosting the achievable throughput in wireless networks. Among the effective optimization strategies is to dynamically adjust the packet size either to better suit the channel conditions or to minimize the number of overhead bits in the individual packets. However, multi-levels of security requirements impose constraints on the data mix in the packet payload and may diminish the gains achievable by contemporary packet-size optimization schemes. This paper presents a novel bandwidth optimization algorithm for wireless data acquisition networks where strict confidentiality requirements and access restriction policies have to be observed. The algorithm exploits the classification of data in minimizing the number of packet transmissions as well as the overhead within the individual packets. The idea is to combine the transmission of packets based on the time sensitivity and security attributes of the data in the payload. The performance of the proposed algorithm is validated through mathematical analysis and through simulation. The simulation results confirm the effectiveness of the algorithm in boosting data throughput in the network.

show abstract

Payload length and rate adaptation for multimedia communications in wireless LANs

Cited by 40 publications

References 15 publications

Design and Evaluation of a Cross-Layer Framework for Improving 802.11 Networks

Design and Evaluation of a Cross-Layer Framework for Improving 802.11 Networks

Improving WLAN Performance by Modifying an IEEE 802.11 Protocol

Optimized packet formation in multi‐level security wireless data acquisition networks

Contact Info

Product

Resources

About