Fair coding for inter‐session network coding in wireless mesh networks

Yang, Xiang; Wang, Weiping; Lu, Mingming; Wang, Jianxin; Zhang, Xi

doi:10.1002/wcm.2659

Cited by 4 publications

(2 citation statements)

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“…Moreover, in [23] a study of the effects of network coding on the aggregated throughput in WMNs is provided; it is observed that the throughput can be considerably increased with the use of NC techniques. Besides, in [24] the authors propose FairCoding, which is a cross-layer protocol optimizing the coordination among the network coding and the MAC layer protocols; they observe that FairCoding increases the number of coding opportunities as well as the average transmission rate of WMNs, reaching an improvement of 20%. Finally, in [25] the authors jointly optimize NC and opportunistic routing in WMNs; they also provide a taxonomy of protocols considering both mechanisms.…”

Section: Introductionmentioning

confidence: 99%

Adaptive Wireless Network Coding for Infrastructure Wireless Mesh Networks

2019

KSII TIIS

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IEEE 802.11s-based infrastructure Wireless Mesh Networks (iWMNs) are envisaged as a promising solution to provide ubiquitous wireless Internet access. The limited network capacity is a problem mainly caused by the medium contention between mesh users and the mesh access points (MAPs), which gets worst when the mesh clients employ the Transmission Control Protocol (TCP). To mitigate this problem, we use wireless network coding (WNC) in the MAPs. The aim of this proposal is to take advantage of the network topology around the MAPs, to alleviate the contention and maximize the use of the network capacity. We evaluate WNC when is used in MAPs. We model the formation of coding opportunities and, using computer simulations, we evaluate the formation of such coding opportunities. The results show that as the users density grows, the coding opportunities increase up to 70%; however, at the same time, the coding delay increments significantly. In order to reduce such delay, we propose to adaptively adjust the time that a packet can wait to catch a coding opportunity in an MAP. We assess the performance of moving-average estimation methods to forecast this adaptive sojourn time. We show that using moving-average estimation methods can significantly decrease the coding delay since they consider the traffic density conditions. A preliminary version of this paper appeared in IEEE AINA 2014, May 13-16, Victoria, Canada [44]. This version includes detailed information about the wireless network coding technique, its operation requirements, examples illustrating the benefits of this novel routing technique, and new simulation results.

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Section: Introductionmentioning

confidence: 99%

Adaptive Wireless Network Coding for Infrastructure Wireless Mesh Networks

2019

KSII TIIS

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“…El mecanismo de control de acceso el medio (MAC) es muy importante para la implementación de la codificación de red. En [92], Yang et al demuestran que la inequidad de este mecanismo es un factor que reduce las oportunidades de codificación, limitando significativamente los beneficios de la codificación de red. Los autores proponen un mecanismo denominado como FairCodig para atender este problema.…”

Section: Fair Codingunclassified

Codificación adaptativa de red para sistemas inalámbricos IEEE 802.11s en modo infraestructura

Arellano

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IEEE 802.11S INFRASTRUCTURE WIRELESS MESH NETWORKS (commonly known as iWMNs) are integrated by static wireless nodes capable of working in coordination to route data packets. In this way, the nodes collaborate to exchange information with each other. In addition, iWMNs can be interconnected with other network technologies and, in this way, help to wirelessly extend the coverage of these networks; for example, iWMNs are used today to extend the coverage of cellular or wired networks. Thanks to this feature, and also to their low infrastructure cost, iWMNs networks are considered today as an excellent option to offer wireless Internet connectivity services in geographical areas where the use of other network technologies is unfeasible. Despite the promising features of iWMNs, there are studies and results that cast doubt on their performance, since it has been documented that the performance of these networks can be affected by numerous factors; such as the use of TCP to transport information in wireless environments, the transmission errors in the wireless medium, as well as the access contention between network users. All these factors can degrade the performance of iWMNs and, consequently, affect the quality of the experience for the users. In this doctoral thesis, some of these performance problems are addressed through the technique called adaptive network coding. With this technique, the nodes of an iWMN are allowed to combine various data packets and thus build an encoded packet; this packet contains the information from the original packets, requiring only one wireless transmission to transport the original information, reducing the use of the wireless medium and, thereby, increasing the capacity of the network. The proposed technique also seeks to adapt the coding process to the traffic conditions in the network through the dynamic adjustment of the waiting time of the packets in a node before they can be combined. This proposal aims to substantially improve the performance of iWMNs, solving some problems that affect them. The evaluation of the proposal is carried out through simulations and numerical evaluations. After a detailed analysis of the results, we find that iWMNs can improve their performance by using the adaptive network coding technique, since the number of wireless transmissions in the network is considerably reduced, and, consequently, i) the medium access contention decreases, ii) the probability of errors in the medium is reduced, and iii) the capacity of the network increases.

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A New Wireless Mesh Network Based on Network Coding Technology

Li¹,

Bai²

2018

2018 International Conference on Sensor Networks and Signal Processing (SNSP)

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Fair coding for inter‐session network coding in wireless mesh networks

Cited by 4 publications

References 20 publications

Adaptive Wireless Network Coding for Infrastructure Wireless Mesh Networks

Adaptive Wireless Network Coding for Infrastructure Wireless Mesh Networks

Codificación adaptativa de red para sistemas inalámbricos IEEE 802.11s en modo infraestructura

A New Wireless Mesh Network Based on Network Coding Technology

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