Per-node throughput enhancement in Wi-Fi densenets

Shin, Kyung‐Seop; Park, Ieryung; Hong, Jihyung; Har, Dongsoo; Cho, Dong-Ho

doi:10.1109/mcom.2015.7010524

Cited by 34 publications

(19 citation statements)

References 4 publications

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“…To date, the problem of scalability in dense networks has mostly been studied in the context of cellular and Wi-Fi networks. Shin et al studied Wi-Fi densenets and evaluated the three main approaches that can be applied to mitigate interference and therefore increase scalability in dense deployments [8]: (i) offloading to unlicensed LTE-U networks, (ii) more spectrally efficient modulation schemes (e.g., NOMA, SE-FDM, OFDMA-VTS) and (iii) controlling interference levels by using 802.11ax features. However, these solutions cannot easily be adapted to sub-1GHz communications, due to their technology-specific nature, and high resource and energy requirements.…”

Section: Challenges Related To Lpwan Scalability In Dense Network Depmentioning

confidence: 99%

Sub-GHz LPWAN Network Coexistence, Management and Virtualization: An Overview and Open Research Challenges

Poorter

Hoebeke

Strobbe

et al. 2017

Wireless Pers Commun

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Abstract. The IoT domain is characterized by many applications that require lowbandwidth communications over a long range, at a low cost and at low power. LPWANs (Low Power Wide Area Networks) fulfill these requirements by using sub-GHz radio frequencies (typically 433 or 868 MHz) with typical transmission ranges in the order of 1 up to 50 kilometers. As a result, a single base station can cover large areas and can support high numbers of connected devices (> 1000 per base station). Notorious initiatives in this domain are LoRa, Sigfox and the upcoming IEEE 802.11ah (or "HaLow") standard. Although these new technologies have the potential to significantly impact many IoT deployments, the current market is very fragmented and many challenges exists related to deployment, scalability, management and coexistence aspects, making adoption of these technologies difficult for many companies. To remedy this, this paper proposes a conceptual framework to improve the performance of LPWAN networks through in-network optimization, cross-technology coexistence and cooperation and virtualization of management functions. In addition, the paper gives an overview of state of the art solutions and identifies open challenges for each of these aspects.

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Section: Challenges Related To Lpwan Scalability In Dense Network Depmentioning

confidence: 99%

Sub-GHz LPWAN Network Coexistence, Management and Virtualization: An Overview and Open Research Challenges

Poorter

Hoebeke

Strobbe

et al. 2017

Wireless Pers Commun

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show abstract

“…For example, dynamical channel bonding [3] and Orthogonal Frequency-Division Multiple Access (OFDMA) [4] are applied to alleviate the spectrum usage. OBSS interference handling techniques such as Clear Channel Assessment (CCA) and Transmit Power Control (TPC) should allow for better control of the interference levels in the network environment [1]. In combination with other state-ofthe-art PHY and MAC layer enhancements, these techniques should help to satisfy the user experience requirements in dense Wi-Fi networks.…”

Section: Related Workmentioning

confidence: 99%

“…The UE wirelessly communicates with the other components of the platform through a set of Access Points (APs) deployed at the concert location. The recorded content is first analysed by the application itself and its metadata (e.g., resolution, brightness, encoding) is sent to the UGCC (1). If the recorded content is requested by DR (2), the application uploads the user-generated content to the system back-end (3).…”

Section: A User Equipmentmentioning

confidence: 99%

“…This allowed us to determine the best performing scheduling technique in a Wi-Fi DenseNet. The shielded lab is located at Zwijnaarde, Belgium and is part of the w-iLab.t testbed accommodated by iMinds 1 . The smartphones used during these experiments are listed in Table I.…”

Section: A Experimental Set-upmentioning

confidence: 99%

“…When deploying a bandwidth intensive platform in such highly-dense environments, Quality-of-Service (QoS) policies have to be maintained and the non-trivial challenges of WiFi DenseNets [1] are to be kept in mind. An important challenge is the low per-client throughput due to the high number of devices that are located in a small area and thereby increasing the data collision probability.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Upstream Content Scheduling in Wi-Fi DenseNets during Large-Scale Events

Daneels

Famaey

Bohez

et al. 2015

2015 IEEE Globecom Workshops (GC Wkshps)

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Abstract-The smartphone revolution and widespread availability of wireless LAN and mobile Internet technologies has changed the way people interact with the world. These technologies can be exploited by event organisers to boost audience involvement and immersion, for example, by integrating usergenerated content into the event experience. In this paper, we developed a large-scale event participation platform for the wireless transmission of user-generated videos to be used during the event. Such events often bring together thousands of users on a small geographical area and providing wireless connectivity in such dense environments is highly challenging. We analysed the efficiency of several upload scheduling strategies in WiFi DenseNets based on extensive experiments performed in a shielded lab environment. We showed that intelligent scheduling improved throughput over 20% compared to uncoordinated uploading in a dense network, with more expected gains when the density would further increase. Moreover, we also calculated the theoretical scalability of the platform. Based on our results, we confirm the importance of content scheduling to efficiently utilise WLAN technologies in highly dense environments.

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