Evaluation of the IEEE 802.11ah Restricted Access Window mechanism for dense IoT networks

Tian, Le; Famaey, Jeroen; Latré, Steven

doi:10.1109/wowmom.2016.7523502

Cited by 85 publications

(74 citation statements)

References 16 publications

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“…As such, it effectively combines the efficiency of CSMA-CA and the determinism of TDMA into a dynamically adaptable MAC scheduler. RAW has been shown to significantly reduce collision probability and interference in dense networks [4], resulting in a potential throughput increase of 50% or more. Traditional Wi-Fi stations need to wake up for every beacon frame, resulting in high power consumption.…”

Section: Ieee 80211ahmentioning

confidence: 99%

“…Instead, decentralized schedulers such as proposed in [13] are being introduced but they again come with severe drops in throughput performance as the number of nodes grows, as sub-optimalities in the distributed schedule lead to cell (=slot+frequency) overlapping and therefore collisions. [4]. To date, only limited research has been performed on finding the optimal RAW parameters.…”

Section: Mac Level Improvementsmentioning

confidence: 99%

“…Finally, [18] propose an algorithm to determine the optimal size of RAW slots, considering the relationship between the estimated number of devices and the size of RAW in saturation mode. However, their approach only considers number of upload stations as a relevant input variable to determine the RAW parameters, while it is known that other aspects, such as traffic load and pattern, are equally important [4]. Moreover, they do not consider division of stations (i.e., each station randomly selects a RAW group) and are limited to scenarios with upload traffic only (e.g., sensor-based monitoring).…”

Section: Mac Level Improvementsmentioning

confidence: 99%

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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: Ieee 80211ahmentioning

confidence: 99%

Section: Mac Level Improvementsmentioning

confidence: 99%

Section: Mac Level Improvementsmentioning

confidence: 99%

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

Poorter

Hoebeke

Strobbe

et al. 2017

Wireless Pers Commun

Self Cite

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“…Pengujian dilakukan untuk menguji beban trafik, jumlah station, dan durasi RAW group. Hasil simulasi menunjukkan bahwa dengan pengelompokan yang tepat, mekanisme RAW pada hakikatnya akan meningkatkan nilai throughput, latency, dan efisiensi energi di dalam jaringan tersebut [8]. Penelitian lain dilakukan untuk mensimulasikan standar 802.11ah dengan menggunakan peningkatan pada algoritme Medium Access Control (MAC) untuk mengestimasi jumlah peranti pada akses uplink dari kemungkinan kesuksesannya.…”

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Analisis Unjuk Kerja Perubahan Jumlah Node dan RAW Station pada IEEE 802.11ah

Wulandari¹,

Perdana²,

Negara³

2017

Jurnal Nasional Teknik Elektro dan Teknologi Informasi (JNTETI)

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Abstract-Rapid [4]. RAW membagi station yang terhubung pada access point menjadi beberapa group dan membuat kanal menjadi terbagi atas beberapa slot, kemudian menempatkan setiap slot pada setiap group. Setiap RAW dapat terdiri atas beberapa group dan setiap group dapat mengelola hingga 64 station [3].Wireless access network merupakan jaringan yang besteffort dalam pengiriman paketnya. Akan tetapi, layanan yang

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“…Tiap RAW slot memiliki giliran untuk mengakses kanal. Jika RAW slot tersebut belum berada di kondisi diperbolehkan untuk mengakses kanal, maka RAW slot tersebut tidak diperbolehkan untuk mengakses kanal dan semua stasiun yang berada dalam slot tersebut dalam kondisi sleep [14]. Dengan mekanisme RAW slot ini selain dapat membatasi akses kanal yang ditujukan untuk mengurangi collision dan dapat digunakan untuk menghemat energi [7].…”

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Analisis Performansi Perubahan RAW Slot Pada Standar IEEE 802.11ah

Oktaviana

Perdana

Negara

2017

INFOTEL

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Abstrak -Meningkaatnya kebutuhan dan permintaan layanan yang beragam oleh user untuk dapat bertukar dan mendapatkan informasi secara real time, reliable, dan fleksibel menjadi salah satu permasalahan yang dihadapi oleh teknologi komunikasi yang ada saat ini. WLAN pada standar IEEE 802.11 merupakan salah satu teknologi wireless yang dapat menjadi solusi dari permasalahan tersebut. Memiliki cakupan area komunikasi yang tidak terlalu luas, yaitu antara 20-70 meter saja, hanya mampu melayani hingga 2007 stasiun, dan memiliki konsumsi energi yang cukup besar, menyebabkan beberapa sistem yang terdapat pada WLAN pada standar IEEE 802.11 kurang bekerja secara maksimal. Dengan beberapa kekurangan tersebut, maka WLAN pada standar IEEE 802.11 mengenalkan task group baru yang disebut IEEE 802.11ah. IEEE 802.11ah adalah standar WLAN baru yang bekerja pada spektrum frekuensi 900 MHz, cakupan area komunikasi yang mencapai 1 kilometer, mampu melayani 8192 stasiun dengan hierarki AID yang baru, memiliki konsumsi energi yang lebih rendah dan mampu meningkatkan nilai throughput dengan mekanisme RAW. Penelitian ini melakukan perubahan jumlah RAW slot pada IEEE 802.11ah untuk melihat bagaimana pengaruhnya terhadap performansi jaringan. Pada penelitian ini didapatkan bahwa perubahan jumlah RAW slot berpengaruh terhadap performansi jaringan, dalam hal ini adalah throughput, average delay, packet delivery ratio, dan energy consumption.Kata kunci -IEEE 802.11ah, RAW, RAW Slot Abstract -The increasing needs and demands of diverse services by the users to be able to exchange and obtain information in real time, reliable, and flexible to be one of the problems faced by existing communication technology. WLAN on the IEEE 802.11 standard is one of the wireless technologies that can be the solution to the problem. It has a relatively small area of communication that is between 20-70 meters only, only able to serve up to 2007 stations, and has considerable energy consumption, causing some systems contained in the WLAN in IEEE 802.11 standard less work maximally. With these shortcomings, the WLAN on the IEEE 802.11 standard introduces a new task group called IEEE 802.11ah. IEEE 802.11ah is a new WLAN standard working on the 900 MHz frequency spectrum, a 1 kilometer communications coverage area, capable of serving 8192 stations with new AID hierarchies, has lower energy consumption, and can increase throughput value by the RAW mechanism. This study will make changes to the number of RAW slots in the IEEE 802.11ah to see how they affect the network performance. In this research, it is found that the change of RAW slot number influence to network performance, in this case, is throughput, average delay, packet delivery ratio, and energy consumption.Keywords -IEEE 802.11ah, RAW, RAW Slot I. PENDAHULUANKebutuhan manusia akan informasi dan komunikasi yang cepat tanpa terbatas oleh tempat dan waktu dan dengan semakin meningkatnya kebutuhan dan permintaan layanan yang beragam oleh user dengan mobilitas yang tinggi untuk dapat bertukar dan mendapatkan in...

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Evaluation of the IEEE 802.11ah Restricted Access Window mechanism for dense IoT networks

Cited by 85 publications

References 16 publications

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

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

Analisis Unjuk Kerja Perubahan Jumlah Node dan RAW Station pada IEEE 802.11ah

Analisis Performansi Perubahan RAW Slot Pada Standar IEEE 802.11ah

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