ÆtherFlow: Principled Wireless Support in SDN

Yan, Muxi; Casey, Jasson; Shome, Prithviraj; Sprintson, Alex; Sutton, Andrew M.

doi:10.1109/icnp.2015.9

Cited by 24 publications

(17 citation statements)

References 6 publications

(1 reference statement)

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“…LVAPs are located on Odin agents that operate on APs and are implemented in the Click Modular Router [4]. In [5], an SDN framework is presented to extend the basic concept of SDN to WLANs. ΑEtherFlow is implemented in CPqD SoftSwitch [6], which is installed on OpenWRT [7].…”

Section: Backgourd Information and Related Workmentioning

confidence: 99%

“…ΑEtherFlow is implemented in CPqD SoftSwitch [6], which is installed on OpenWRT [7]. The authors of [5] also present a cross-layer architecture, CrossFlow [8], using the principles of SDR and basic building blocks of SDN. It has been implemented using GUN radio [9] on a Universal Software Radio Peripheral (USRP) platform.…”

Section: Backgourd Information and Related Workmentioning

confidence: 99%

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An SDN Agent-Enabled Rate Adaptation Framework for WLAN

Li¹,

Oikonomou²,

Beach³

et al. 2019

ICC 2019 - 2019 IEEE International Conference on Communications (ICC)

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Rate or link adaptation is the determination of the optimal modulation and coding scheme (MCS) that will maximize the performance under the current wireless channel conditions. A Software-Defined Networking (SDN) agent is a software element bridging an SDN controller and any legacy wireless network elements by providing the abstraction of these elements. In this paper, we present the work of an SDN approach for designing and implementing a Rate/Link Adaptation (RA) framework for wireless local area networks (WLAN). The framework provides support for real-time RA applications and flexibility to satisfy various degrees of Quality of Service (QoS) or Quality of Experience (QoE) requirements. We implement the proposed framework as an extension to the Wireless Open-Access Research Platform (WARP), an FPGA based Software-Defined Radio (SDR) platform, with evaluation results indicating the feasibility of using SDN-RA under the stringent time constraints posed by the WLAN. To demonstrate the effectiveness of decoupling rate decision functions from the underlying wireless interface card and to highlight its applicability for a diverse set of scenarios, we present a use case deployed over the framework focusing on rate adaptation for individual traffic, and display optimization in different aspects, such as the reduction transmission errors.

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Section: Backgourd Information and Related Workmentioning

confidence: 99%

Section: Backgourd Information and Related Workmentioning

confidence: 99%

An SDN Agent-Enabled Rate Adaptation Framework for WLAN

Li¹,

Oikonomou²,

Beach³

et al. 2019

ICC 2019 - 2019 IEEE International Conference on Communications (ICC)

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show abstract

“…LVAPs are located on Odin agents that operate on APs and are implemented in the Click Modular Router [11]. In [12], an SDN framework is presented to extend basic concept of SDN to WLANs. ΑEtherFlow is implemented in CPqD SoftSwitch [13], which is installed on OpenWRT [14].…”

Section: Related Workmentioning

confidence: 99%

“…The authors of [12] also present a cross-layer architecture using the principles of SDR and basic building blocks of SDN. In its implementation, GUN radio [16] is used on a Universal Software Radio Peripheral (USRP) platform.…”

Section: Related Workmentioning

confidence: 99%

Building SDN Agent for Wireless Local Area Networks

Beach

Nejabati

et al. 2019

2019 IEEE Wireless Communications and Networking Conference (WCNC)

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Recently, a lot of research is focused on applying Software-Defined Networking (SDN) concepts on wireless networks. However, the current wireless systems are lack of SDN support and remain closed and (mostly) proprietary, which makes it difficult to integrate with SDN systems. The SDN agent is introduced to solve the above issues. An SDN agent is a software element bridging the SDN controller and any legacy wireless network elements (NEs) by providing the abstraction of these elements. The main advantage of this approach is that there is no modification to either the existing SDN elements or the 802.11 protocols, while the SDN controller is enabled to control and manage legacy wireless NEs. In this paper, we present an SDN agent framework for WLANs and describe an implementation of the proposed agent on the Wireless Open-Access Research Platform (WARP), an FPGA based open source Software-Defined Radio (SDR) platform. With the support from such an agent, innovative applications and functionalities can be developed for the WLAN access points (APs), such as dynamically slicing AP bandwidth among users and adapting the transmit power in flexible granularity, i.e. at per frame/per flow level.

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“…However, this work does not decide when the handoff should take place. The solution proposed in [22] uses RSSI levels perceived by the STA to predict which AP the STA should connect during handoff. Afterwards, the controller modifies the APs' flow tables and sends multicast packets addressed to the STA to both the source and destination AP.…”

Section: Related Workmentioning

confidence: 99%

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

Filho

Cunha

Lima

et al. 2018

Wireless Communications and Mobile Computing

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In Wireless Local Area Networks (WLAN) with more than one access point (AP), the handoff process plays a crucial role to guarantee the user service continuity. Usually initiated by the client’s equipment, it occurs smoothly on the order of seconds. However, despite being functional and well-established, this process can be inadequate in scenarios where users are executing multimedia applications, such as real-time video streaming or VoIP. For these applications, those few seconds may cause loss of packets, resulting in loss of essential information. Because of that, this study proposes a Software Defined Wireless Networking (SDWN) approach, in which a controller decides when to initiate the handoff process and chooses the AP the client’s device must connect. This approach was implemented in a testbed scenario and the results have shown its efficiency by decreasing the handoff delay and providing more stability to the process.

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ÆtherFlow: Principled Wireless Support in SDN

Cited by 24 publications

References 6 publications

An SDN Agent-Enabled Rate Adaptation Framework for WLAN

An SDN Agent-Enabled Rate Adaptation Framework for WLAN

Building SDN Agent for Wireless Local Area Networks

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

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