A Software Defined Wireless Networking Approach for Managing Handoff in IEEE 802.11 Networks

Filho, José Quaresma; Cunha, Nailson dos Santos; Lima, Robertson; Anjos, Eudisley Gomes dos; Matos, Fernando

doi:10.1155/2018/9246824

Cited by 5 publications

(4 citation statements)

References 17 publications

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“…Pengujian: Pada tahap ini hasil dari implementasi sistem akan diuji sesuai dengan skenario pengujian yang telah ditentukan. Parameter pengujian yang dipakai meliputi : Jitter, Throughput, Packet loss, dan RSII [6][7].…”

Section: )unclassified

Simulasi Handover pada Jaringan Nirkabel Berbasis Software Defined Network

Siahaan,

Suartana

2023

JINACS

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Software Defined Network (SDN) merupakan sebuah metode atau paradigma dalam jaringan komputer dalam mendesain, membuat, dan mengelola sebuah infrastruktur jaringan. SDN memisahkan control plane dan data plane, SDN ini menjad solusi untuk perkembangan jaringan yang pesat. SDN memiliki kontrol yang terpusat sehingga mempermudah pengguna dalam mengelola dan mengonfigurasi sebuah jaringan dibandingkan dengan jaringan non-SDN dimana control plane dan data plane berada pada satu perangkat yang sama. Dengan SDN jaringan menjadi lebih fleksibel dan cerdas. Penerapan SDN pada jaringan wireless juga diharapkan dapan memberikan dampak positif dan meningkatkan kinerja dari jaringan WLAN. Handover terminal pada jaringan WLAN berbasis SDN dapat secara efektif meningkatkan QoS dan pemanfaatan sumber daya WLAN. Penelitian ini berfokus pada handover berbasis software defined wireless network (SDWN), penelitian ini dilakukan dengan menggunakan emulator Mininet-WiFi dengan model mobilitas random way point, random walk, dan random direction. Penelitian ini bertujuan mengetahui pengaruh pergerakan station dengan mobilitas terhadap jarak akses poin dengan jumlah station pada proses handover yang sudah ditentukan. Pada setiap model mobility pengujian untuk mendapatkan throughput, jitter, packet loss, dan RSSI. Dari hasil uji coba didapatkan mobilitas pada jaringan WLAN yang mengakibatkan perubahan topologi jaringan, mengakibatkan perubahan nilai parameter uji yang digunakan. Kata Kunci - Simulasi Handover, WLAN, Software Defined Network, Randomway Poin, Random Walk, Random Direction

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Section: )unclassified

Simulasi Handover pada Jaringan Nirkabel Berbasis Software Defined Network

Siahaan,

Suartana

2023

JINACS

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“…Since handover includes searching for neighbor APs (NAPs) in different channels (i.e., channel scanning), authentication to the target AP, and reassociation to that AP, handover is time-consuming; consequently, service quality deteriorates, especially for delay-sensitive services. During handover, the channel scanning procedure, which aims to collect NAP information in all of the available channels, accounts for most of the delay time [5,6]. Therefore, it is necessary to find an efficient way to reduce the channel scanning procedure for fast handover.…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, it is necessary to find an efficient way to reduce the channel scanning procedure for fast handover. This situation leads to the need for AP coordination or centralized AP control, usually known as the enterprise WLAN [2,6,7]. In studies on enterprise WLANs, there have been efforts to reduce the channel scanning procedure, which aims to allow mobile stations (MSs) to recognize the channel information of NAPs.…”

Section: Introductionmentioning

confidence: 99%

Reinforcement Learning-Based Handover Scheme with Neighbor Beacon Frame Transmission

Kim¹,

Kim²,

Choi³

et al. 2023

Intelligent Automation &Amp; Soft Computing

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Mobility support to change the connection from one access point (AP) to the next (i.e., handover) becomes one of the important issues in IEEE 802.11 wireless local area networks (WLANs). During handover, the channel scanning procedure, which aims to collect neighbor AP (NAP) information on all available channels, accounts for most of the delay time. To reduce the channel scanning procedure, a neighbor beacon frame transmission scheme (N-BTS) was proposed for a seamless handover. N-BTS can provide a seamless handover by removing the channel scanning procedure. However, N-BTS always requires operating overhead even if there are few mobile stations (MSs) for the handover. Therefore, this paper proposes a reinforcement learning-based handover scheme with neighbor beacon frame transmission (MAN-BTS) to properly consider the use of N-BTS. The optimization equation is defined to maximize the expected reward to find the optimal policy and is solved using Q-learning. Simulation results show that the proposed scheme outperforms the comparison schemes in terms of the expected reward.

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“…The handover delay is caused by three procedures: channel scanning, authentication, and reassociation [4]. Among them, the channel scanning procedure for scanning all of the available channels to collect adjacent APs' information accounts for the largest portion [4,5], and therefore MS needs to reduce the time to improve the service continuity. That is, the reason of the long handover delay is the lack of information on the neighboring APs (NAPs).…”

Section: Introductionmentioning

confidence: 99%

SWITCH: SDN-WLAN Integrated Handover Scheme for QoS-Guaranteed Mobile Service

2022

KSII TIIS

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The handover procedure of IEEE 802.11 wireless local area networks (WLANs) introduces significant delay, which can degrade the quality of service (QoS) especially for delay-sensitive applications. Although studies have been conducted to support handover in SDN-based WLAN, there is no research to reduce the channel scanning procedure that takes up the most delay time in the handover process. The channel scanning procedure is essential to determine the appropriate access point (AP). To mitigate this problem, this paper proposes a SWITCH: SDN-WLAN integrated handover scheme for QoS-Guaranteed mobile service. In SWITCH, each AP periodically broadcasts beacon frames through different channels in a predetermined order that includes the operating channel information of the AP. This allows mobile stations (MSs) to receive the beacon frames of nearby APs, and therefore they can determine the appropriate APs for handover without the channel scanning procedure. By reporting the information of the newly moved AP to the SDN controller, a flow rule is installed in advance to provide fast handover, and packet loss is reduced by buffering data destined for MS. In addition, the proposed scheme can adaptively operate SWITCH to consider the user location and QoS requirement of flow to save radio resource overhead. Performance evaluation results demonstrate that SWITCH can reduce the handover delays, flow table utilization ratio and radio resource overhead while improving the network throughput.

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A Software Defined Wireless Networking Approach for Managing Handoff in IEEE 802.11 Networks

Cited by 5 publications

References 17 publications

Simulasi Handover pada Jaringan Nirkabel Berbasis Software Defined Network

Simulasi Handover pada Jaringan Nirkabel Berbasis Software Defined Network

Reinforcement Learning-Based Handover Scheme with Neighbor Beacon Frame Transmission

SWITCH: SDN-WLAN Integrated Handover Scheme for QoS-Guaranteed Mobile Service

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