CADWAN: A Control Architecture for Dense WiFi Access Networks

Gallo, Pierluigi; Kosek-Szott, Katarzyna; Szott, Szymon; Tinnirello, Ilenia

doi:10.1109/mcom.2017.1601097

Cited by 29 publications

(12 citation statements)

References 15 publications

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“…How to implement OBSS coordination is outside the scope of this work. However, for completeness, it is worth to mention the current trend for enterprise WLANs to centralize all management and control functions in a single controller with a global vision of the network [15]. We are convinced the aforementioned TWT use-cases can be easily implemented on top of those network management solutions.…”

Section: Coordination Of Multiple Obsssmentioning

confidence: 90%

Target Wake Time: Scheduled Access in IEEE 802.11ax WLANs

Nurchis

Bellalta

2019

IEEE Wireless Commun.

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The increasing interest for ubiquitous networking, and the tremendous popularity gained by IEEE 802.11 Wireless Local Area Networks (WLANs) in recent years, is leading to very dense deployments where high levels of channel contention may prevent to meet the increasing users' demands. To mitigate the negative effects of channel contention, the Target Wake Time (TWT) mechanism included in the IEEE 802.11ax amendment can have a significant role, as it provides an extremely simple but effective mechanism to schedule transmissions in time. Moreover, in addition to reduce the contention between stations, the use of TWT may also contribute to take full advantage of other novel mechanisms in the IEEE 802.11 universe, such as multiuser transmissions, multi-AP cooperation, spatial reuse and coexistence in high-density WLAN scenarios. Overall, we believe TWT may be a first step towards a practical collision-free and deterministic access in future WLANs.1 It is expected that the IEEE 802.11ax amendment will be published in 2019.

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Section: Coordination Of Multiple Obsssmentioning

confidence: 90%

Target Wake Time: Scheduled Access in IEEE 802.11ax WLANs

Nurchis

Bellalta

2019

IEEE Wireless Commun.

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“…In this section, we mainly introduce the existing studies regarding RRM. For WLANs, some researchers think that distributed network architecture makes RRM very inefficient while centralized network architecture is helpful to achieve more efficient RRM [21][22][23]. Unlike these schemes that all work at low-frequency band and adopt the wired links between controller and access points (APs), in dense mmWave WLANs, a controller is used for managing and controlling multiple APs by directional mmWave links [24,25].…”

Section: Related Workmentioning

confidence: 99%

An Efficient Radio Access Resource Management Scheme Based on Priority Strategy in Dense mmWave Cellular Networks

Gui¹,

Liu²

2020

Wireless Communications and Mobile Computing

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In millimeter wave (mmWave) communication systems, beamforming-enabled directional transmission and network densification are usually used to overcome severe signal path loss problem and improve signal coverage quality. The combination of directional transmission and network densification poses a challenge to radio access resource management. The existing work presented an effective solution for dense mmWave wireless local area networks (WLANs). However, this scheme cannot adapt to network expansion when it is applied directly to dense mmWave cellular networks. In addition, there is still room for improvement in terms of energy efficiency and throughput. Therefore, we firstly propose an efficient hierarchical beamforming training (BFT) mechanism to establish directional links, which allows all the small cell base stations (SBSs) to participate in the merging of training frames to adapt to network expansion. Then, we design a BFT information-aided radio access resource allocation algorithm to improve the downlink energy efficiency of the entire mmWave cellular network by reasonably selecting beam directions and optimizing transmission powers and beam widths. Simulation results show that the proposed hierarchical BFT mechanism has the smaller overhead of BFT than the existing BFT mechanism, and the proposed BFT information-aided radio access resource allocation algorithm outperforms the existing corresponding algorithm in terms of average energy efficiency and throughput per link.

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“…Other architectures such as Empower [8] apply SDN to the management of heterogeneous wireless networks with different radio access technologies, a key feature in 5G networks. The authors in [9] proposed an architecture based on SDWN whereby the control plane is enhanced to support basic radio parameter configuration. However, the authors did not acknowledge the need for making these parameters programmable to include the desired management flexibility, and the proposed SDN model was justified with simulations only.…”

Section: Current Approaches Vs Spectrum Programmingmentioning

confidence: 99%