Experiences in using WiFi for rural internet in India

Raman, Bhaskaran; Chebrolu, Kameswari

doi:10.1109/mcom.2007.284545

Cited by 144 publications

(90 citation statements)

References 5 publications

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“…However, in rural settings where there is little network connectivity to begin with, it is intuitive to expect that external interference will be minimal or nonexistent. This intuition is also corroborated by practical experience in several deployments [3], [7], [8]. Likewise, external interference is unlikely in remote deployments of 802.15.4-based mesh networks (e.g., BriMon [18], Volcano monitoring [19]).…”

mentioning

confidence: 57%

“…In fact, for rural areas in developing regions, video-conferencing based applications have been reported to be the primary use of the network [3]. However, literature on multihop mesh networks suggests that their performance is unpredictable.…”

mentioning

confidence: 99%

“…Such a consideration is important since such regions form a large fraction of the world today. Some examples of rural mesh networks include [3]- [5], and [8]. We first motivate why the performance behavior of links in such networks needs a detailed study.…”

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confidence: 99%

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On the Feasibility of the Link Abstraction in Wireless Mesh Networks

Raman

Chebrolu

Gokhale

et al. 2009

IEEE/ACM Trans. Networking

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Abstract-Outdoor community mesh networks based on IEEE 802.11 have seen tremendous growth in the recent past. The current understanding is that wireless link performance in these settings is inherently unpredictable, due to multipath delay spread. Consequently, researchers have focused on developing intelligent routing techniques to achieve the best possible performance. In this paper, we are specifically interested in mesh networks in rural locations. We first present detailed measurements to show that the PHY layer in these settings is indeed stable and predictable. There is a strong correlation between the error rate and the received signal strength. We show that interference, and not multipath fading, is the primary cause of unpredictable performance. This is in sharp contrast with current widespread knowledge from prior studies. Furthermore, we corroborate our view with a fresh analysis of data presented in these prior studies. While our initial measurements focus on 802.11b, we then use two different PHY technologies as well, operating in the 2.4-GHz ISM band: 802.11g and 802.15.4. These show similar results too. Based on our results, we argue that outdoor rural mesh networks can indeed be built with the link abstraction being valid. This has several design implications, including at the MAC and routing layers, and opens up a fresh perspective on a wide range of technical issues in this domain.Index Terms-IEEE 802.11, IEEE 802.15.4, interference, link abstraction, link-level measurements, rural networks, WiFi, wireless mesh networks.

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confidence: 57%

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confidence: 99%

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On the Feasibility of the Link Abstraction in Wireless Mesh Networks

Raman

Chebrolu

Gokhale

et al. 2009

IEEE/ACM Trans. Networking

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“…A wireless LAN for a remote mountainous area with a solar power generation for the network equipment was designed in [3]. A wireless network planning, design, management and operation in rural areas in lndia are considered in [17]. Practical design of a content distribution network (CDN) with caches and pull/push distribution mechanisms for the deployment in remote villages is presented in [18].…”

Section: B Internet For Remote Regionsmentioning

confidence: 99%

Portable clouds for provisioning of computing services in networks with very limited connectivity

Nadhom

Loskot

Katz

et al. 2017

2017 International Electrical Engineering Congress (iEECON)

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Abstract-ln this paper, portable clouds are devised after observing similarities between providing the Internet access to users onboard vehicles and to users in remote resources-constrained communities. ln both cases, a gateway connection to the core network is bandwidth limited and unreliable. Portable clouds are intended to provide applications and services in scenarios even when the gateway link is not available at all for extended periods of time. Portable clouds exploit cache to store contents and provide computing resources locally while the applications are modified to facilitate acceptable QoE. The cache is updated infrequently and only when a fast connection becomes available, or when the contents are physically delivered to the cache using a memory medium.

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“…These include wireless local loop (Momtahan 2001;Nedevschi 2007), wireless local area network (Zhang 2004;Raman 2007;Paul 2007), wireless metropolitan area network (Hincapie 2007;Giuliano 2008), and more recently wireless regional area network (Liang 2008). However, the bandwidth efficiency achieved by those technologies is typically limited to less than 5 bits/s/Hz.…”

Section: Ngara Broadband Access System For Rural and Regional Areasmentioning

confidence: 99%

2011-2012 sponsors of the Telecommunications Journal of Australia

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Experiences in using WiFi for rural internet in India

Abstract: Abstract

Cited by 144 publications

References 5 publications

On the Feasibility of the Link Abstraction in Wireless Mesh Networks

On the Feasibility of the Link Abstraction in Wireless Mesh Networks

Portable clouds for provisioning of computing services in networks with very limited connectivity

2011-2012 sponsors of the Telecommunications Journal of Australia

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