Channel Assignment and Load Distribution in a Power-Managed Wlan

Haidar, Mohamad; Akl, Robert; Al‐Rizzo, Hussain M.; Chan, Yupo

doi:10.1109/pimrc.2007.4394370

Cited by 29 publications

(15 citation statements)

References 2 publications

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“…Frequency distribution becomes very challenging where the situation arises like a set of channels having near equal frequencies, in that case interference is the maximum observed. Surachai Chieochan et al, [6] present an survey on existing research works [7][8][9][10][11][12][13][14][15][16] on channel allocation in IEEE 802.11 based wireless networks. They also give a comparison showing the execution behavior, complicity and scalability of the recent development algorithms on channel allocation based on IEEE 802.11.…”

Section: Historical Surveymentioning

confidence: 99%

Dynamic Channel Allocation in IEEE 802.11 Networks

Chakraborty¹,

Saha²,

Bandyopadhyay³

2016

IJCA

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Wireless channel allocation plays as an important role in thedesign of wireless network, as it greatly influences the throughput and performance of the network. It is proposed a technique to improve the usage of wireless spectrum in the context of IEEE 802.11 wireless network using new channel assignment methods among interfering Access Points (APs). Reliable channel selection for each Access Point (AP) is essential in setting up and operating densely deployed 802.11 WLANs. The aim of the channel selection is to provide efficient reuse of the spectrum and therefore minimize interference and improve the performance. The focus is mainly on to design an algorithm to solve the problem of channel allocation using Simulated Annealing. The algorithm minimizes the interference among the Access Points (APs). All the access points in the network operate on this algorithm simultaneously and determine the best channel it should use to minimize the interference from the neighboring access points.

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Section: Historical Surveymentioning

confidence: 99%

Dynamic Channel Allocation in IEEE 802.11 Networks

Chakraborty¹,

Saha²,

Bandyopadhyay³

2016

IJCA

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“…After the identifying, they send the information to the associated AP. 2) APs: APs communicate with each other through Inter-AP (IAPP) protocol [3]. Under this protocol, all APs in the service area listen to the beacons generated by their neighboring APs.…”

Section: A Network Architecturementioning

confidence: 99%

“…The work in [3] incorporates the load balancing problem into the channel assignment framework. Wireless clients are initially characterized by their signal strength.…”

Section: Introductionmentioning

confidence: 99%

Channel assignment with fairness for multi-AP WLAN based on distributed coordination function

Zhang

2011

2011 IEEE Wireless Communications and Networking Conference

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Large-scale multi-AP WMAPNs with a high density of users and access points (APs) have emerged widely in various hotspots, where inter-cell interference is detrimental to the performance of WLANs. In order to mitigate the interference, channel assignment scheme has been a major research topic in recent years. In this paper, based on Bianchi's throughput performance evaluation, we model a channel assignment problem for WLAN with Multiple APs (WLMAPN) not only to maximize the overall system throughput, but also to achieve the fairness among APs, where the inter-cell interference is measured in terms of the throughput reduction. In order to cope with this problem, channel assignment based on the Order of Throughput Reduction (CAOTR) scheme is proposed with low computation complexity, using local search. Finally, extensive simulation results illustrate that the proposed CAOTR scheme significantly enhances the overall throughput and guarantees the fairness of APs in density WMAPN systems.

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“…The interference is weighted using an overlapping channel interference factor, so that also adjacent-channel interference is considered. Haidar et al [6] proposed a similar method for channel assignment, but here the overall interference is reduced using integer linear programming. The most Figure 1: illustrates the proposed method that combines the three concepts of the usage of multiple channels, distributed antennas and network load distribution.…”

Section: Usage Of Multiple Channelsmentioning

confidence: 99%

“…Therefore it is desirable to distribute the network load among multiple APs. To distribute the network load equally Haidar et al [6] proposed a solution where the load on the most heavily loaded AP is minimized. According to the solution described in [5] multiple data flows of a single client are distributed among multiple APs and their DSL connections in a two-hop fashion.…”

Section: Network Load Distributionmentioning

confidence: 99%

On channel assignment, distributed antennas and network load distribution in dense IEEE 802.11 infrastructure networks

Sombrutzki

Zubow

Vidales

et al. 2010

Proceedings of the 6th International Wireless Communications and Mobile Computing Conference

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During the last few years, there has been a tremendous increase in the deployment of IEEE 802.11 wireless networks. However, a possible drawback is the proliferation of dense WiFi deployments leading to mutual interference among WiFi nodes were users will experience low QoS levels. The contribution of this work is to present an architecture for dense WiFi networks that combines Rf channel assignment, distributed antennas and network load distribution to enhance QoS. Simulation results showed that channel assignment and distributed antenna are complementary. The former one increases the capacity of the network by adding additional spectrum and decreasing co-channel interference. The latter one helps to decrease the packet error rate especially of weak links, which also results in higher network capacity. In addition, by balancing the network load among several Access Points the capacity of the uplink of the wired broadband connection (e.g. DSL) can be more efficiently utilized. Simulations show that the proposed method increases the average throughput by up to 14% in infrastructure networks where the wireless capacity is the limiting factor. In scenarios where the backbone is the limiting factor, the average throughput can be increased by up to 56% by using distributed antennas and network load distribution.

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Channel Assignment and Load Distribution in a Power-Managed Wlan

Cited by 29 publications

References 2 publications

Dynamic Channel Allocation in IEEE 802.11 Networks

Dynamic Channel Allocation in IEEE 802.11 Networks

Channel assignment with fairness for multi-AP WLAN based on distributed coordination function

On channel assignment, distributed antennas and network load distribution in dense IEEE 802.11 infrastructure networks

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