On the throughput of an IEEE802.11a Wireless LAN system with terminals under heterogeneus radio conditions

Pan, Huanxu; Sato, Soichi; Kobayashi, Kazutoshi

doi:10.1016/s1388-3437(03)80248-2

Cited by 4 publications

(5 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…If p i is equal to zero, packets from node i are completely captured by its receiver, which is not modeled by Bianchi's work. Similar work with different error probabilities is found in [14].…”

Section: A System Throughputsupporting

confidence: 76%

A General Model and Analysis of Physical Layer Capture in 802.11 Networks

Chang

Misra

Rubenstein

2006

Proceedings IEEE INFOCOM 2006. 25TH IEEE International Conference on Computer Communications

View full text Add to dashboard Cite

Abstract-While packet capture has been observed in real implementations of 802.11 devices, there is a lack of accurate models that describe the phenomenon. We present a general analytical model and an iterative method that predicts error probabilities and throughputs of packet transmissions with multiple senderreceiver pairs. Our model offers a more accurate prediction than previous work by taking into account the cumulative strength of interference signals and using the BER model to convert a signal to interference and noise ratio value to a bit error probability. This permits the analysis of packet reception at any transmission rate with interference from neighbors at any set of locations. We also prove that our iterative method converges, and we verify the accuracy of our model through simulations in Qualnet. Last, we present a rate assignment algorithm to reduce the average delay as an application of our analysis.

show abstract

Section: A System Throughputsupporting

confidence: 76%

A General Model and Analysis of Physical Layer Capture in 802.11 Networks

Chang

Misra

Rubenstein

2006

Proceedings IEEE INFOCOM 2006. 25TH IEEE International Conference on Computer Communications

View full text Add to dashboard Cite

show abstract

“…11 WLANs, uses the CSMA/CA protocol to share radio resources in a fair way, some works in the literature [6,7] have shown that, for 802.11b and a, respectively, this method results in a considerable performance degradation in some common situations in a wireless environment.…”

mentioning

confidence: 99%

“…In this case, the stations select a lower bit rate transmission mode, thus decreasing their bit rate from the nominal value to a smaller one. In fact, [7] shows that selecting a lower rate transmission mode under bad radio conditions is necessary in order to avoid a severe performance degradation due to transmission errors. Mode selection is not defined by standards but is implementationdependent.…”

mentioning

confidence: 99%

See 1 more Smart Citation

Proportional fair throughput allocation in multirate IEEE 802.11e wireless LANs

2006

View full text Add to dashboard Cite

Under heterogeneous radio conditions, Wireless LAN stations may use different modulation schemes, leading to a heterogeneity of bit rates. In such a situation, 802.11 DCF allocates the same throughput to all stations independently of their transmitting bit rate; as a result, the channel is used by low bit rate stations most of the time, and efficiency is low. In this paper, we propose a more efficient throughput allocation criterion based on proportional fairness. We find out that, in a proportional fair allocation, the same share of channel time is given to high and low bit rate stations, and, as a result, high bit rate stations obtain more throughput. We propose two schemes of the upcoming 802.11e standard to achieve this allocation, and compare their delay and throughput performance.

show abstract

“…In [3], a very effective Markov chain model is developed to analyze the collision probabilities and the system throughput of DCF under saturation. This model is further extended in [8] to take into account heterogeneous transmission conditions of stations in terms of the radio link errors as well as the transmission rates, for more realistic system assumptions.…”

Section: A Comparison With Related Workmentioning

confidence: 99%

An analysis of the channel utilization for call admission control in voice over WLAN

Pan

Satoru

2006

Proceedings of the 2006 International Conference on Wireless Communications and Mobile Computing

Self Cite

View full text Add to dashboard Cite

In this paper, we present an analytical method for effectively evaluating the channel utilization of voice calls in voice over WLAN systems. The method is under realistic assumptions general enough to deal with various cases of mixed traffic sources and transmission conditions. The accuracy and effectiveness of our method are validated through experiments. The method provided a basis for a prototype call-admission-control system for VoWLAN, in an attempt to enable an operational VoWLAN system with quality-of-service support.

show abstract

On the throughput of an IEEE802.11a Wireless LAN system with terminals under heterogeneus radio conditions

Cited by 4 publications

References 3 publications

A General Model and Analysis of Physical Layer Capture in 802.11 Networks

A General Model and Analysis of Physical Layer Capture in 802.11 Networks

Proportional fair throughput allocation in multirate IEEE 802.11e wireless LANs

An analysis of the channel utilization for call admission control in voice over WLAN

Contact Info

Product

Resources

About