Quality of service challenges for wireless mobile ad hoc networks

Chakrabarti, Satyajit; Mishra, Amitabh

doi:10.1002/wcm.123

Cited by 35 publications

(26 citation statements)

References 80 publications

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“…Another potential application of 802.11 products is multi-hop wireless networks. As widely known, there are severe problems in multi-hop wireless networks [15][16][17], such as hidden terminal, exposed terminal, self interference, capture effect, QoS, etc. However, the consideration of these problems is outside the scope of this paper.…”

Section: Discussionmentioning

confidence: 99%

Performance evaluation of an adaptive backoff scheme for WLAN

Pang¹,

Liew²,

Lee³

et al. 2004

Wireless Communications

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SummaryIn this paper, a simple self-adaptive contention window adjustment algorithm for 802.11 WLAN is proposed and analyzed. Numerical results show that the new algorithm outperforms the standard 802.11 window adjustment algorithm. Compared with the standard and previously proposed enhancement algorithms, a salient feature of our algorithm is that it performs well in both heavy and light contention cases regardless of the packet sizes and physical versions. Moreover, the adaptive window adjustment algorithm is simpler than previously proposed schemes in that no live measurement of the WLAN traffic activity is needed.

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Section: Discussionmentioning

confidence: 99%

Performance evaluation of an adaptive backoff scheme for WLAN

Pang¹,

Liew²,

Lee³

et al. 2004

Wireless Communications

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“…Ad-hoc wireless networks [1] [3] [6], however, do not require any infrastructure to work. Each node is capable of talking directly to other nodes, so access point controlling medium access is not required.…”

Section: Ad-hoc Wireless Networkmentioning

confidence: 99%

A Study of Ad-Hoc Wireless Networks: Various Issues in Architectures and Protocols

Kopekar¹,

Kumar²

2015

IJCA

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A wireless ad-hoc network is a collection of nodes which are self-organizing and self-administering in nature. All nodes are connected by wireless links and are free to move randomly. Thus, the network topology keeps on changing rapidly and erratically. These kinds of networks are very flexible and don't need any existing infrastructure. In order establish communication within the network and to discover the routes between the nodes a routing protocol is used so that messages may be delivered in a timely manner. The primary objective of an ad hoc network routing protocol is accurate and efficient route establishment between a pair of nodes. Route construction should be done with a minimum of overhead and minimum consumption of bandwidth. The major challenge in these kinds of networks is finding a path between the communication end points of nodes that are mobile. Therefore, these kinds of networks are also called multi-hop ad-hoc networks. This paper is based on study of ad-hoc wireless networks and it's related various issues in architectures and protocols. This paper provides an overview of various issues and challenges in various protocols.

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“…The improvement in network utilization counterbalances the increase in state information and the associated complexity and various issues are needed to be faced while providing QoS for MANETS. The major problems that are faced are as follows: Unreliable wireless channel: the wireless channel is prone to bit errors due to interference from othertransmissions, thermal noise, shadowing and multi-path fading effects [7]. This makes it impossible to providehard packet delivery ratio or link longevity guarantees.…”

Section: Issues and Challenges Providing Qos In Ad-hoc Networkmentioning

confidence: 99%