Wait-to-pick-as-available (W2PAA): A new MAC protocol for uplink multi-users transmissions in WLAN

Er-Rahmadi, Btissam; Ksentini, Adlen; Meddour, Djamal‐Eddine

doi:10.1109/wimob.2015.7348044

Cited by 3 publications

(7 citation statements)

References 8 publications

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“…Taking into account those limitations and aiming at ensuring a backward compatibility with existing 802.11 systems, we have proposed an uplink scheduling scheme for MU-MIMO transmissions, which was initially presented in [12]. While designing this scheme, our aim was to ensure an easy implementation of the proposed scheme in future 802.11ax devices.…”

Section: Basic Wait-to-pick-as-availablementioning

confidence: 99%

“…Many research works in the literature tried to deal with UL MU-MIMO scheduling problem [6][7][8][9][10][11][12]. Particularly, [12] includes most recent works. Although those works proposed attractive UL MU-scheduling methods, their implementation is not straightforward.…”

Section: Introductionmentioning

confidence: 99%

“…In the present work, we propose novel mechanisms to enhance stations scheduling in UL MU-MIMO. A first mechanism, namely W2PAA previousely proposed in [12], is further analyzed and evaluated using an analytical model based on a Semi-Markov chain. After that, an enhancement of WP2AA, namely WP2AA-E, is devised, evaluated and compared to the initial version through computer simulation.…”

Section: Introductionmentioning

confidence: 99%

“…In Section 2, we first enlighten the technological context of UL-MU-MIMO transmissions: the combination of MIMO and beamforming techniques; then we describe one of their key deployments issues: the UL-MU-MIMO transmissions scheduling procedure. For this purpose, we have proposed in a previous work [12] a new scheduling protocol that optimizes incurred scheduling overheads in a contention based channel. In Section 3, we point out the limitations of this protocol and propose enhancements to it.…”

Section: Introductionmentioning

confidence: 99%

“…In Section 3, we point out the limitations of this protocol and propose enhancements to it. In Section 4, we describe a new semi-Markov modeling of precedent UL-MU-MIMO scheduling scheme [12] and compare its analytical and simulated performances. In Section 5, we define the performance metrics we consider in this paper and discuss simulations results for UL-SU and both versions of the proposed UL-MU-MIMO scheduling protocols.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Enhanced uplink multi-users scheduling for future 802.11ax networks: wait-to-pick-as-available enhanced

Er-Rahmadi

Ksentini

Meddour

2016

Wirel. Commun. Mob. Comput.

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One of the key enablers of the upcoming IEEE 802.11ax standard is the inclusion of uplink multi-users (UL MU) transmission model, which is performed using multiple-input multiple-output (MIMO) and beamforming techniques. So far, UL MU-MIMO has not been standardized in any of IEEE 802.11 amendments, because of technical issues facing its definition. One of these significant issues is the scheduling of UL MU-MIMO transmissions, which refers to selection rules and resource allocation procedures performed before simultaneous data transmissions. Indeed, simultaneous transmitters and receiver should exchange some information to correctly transmit the parallel data frames. However, this information exchange adds overheads, leading to reduce network performance. In this regard, we have proposed, in a previous work, a novel 802.11ax medium access control protocol aiming at reducing elapsed time in managing the establishment of an UL -MU communication called Wait-to-Pick-As-Available (W2PAA). Our contribution in this paper is twofold. First, we introduce an analytical model based on semi-Markov Chains to evaluate the performance of W2PAA; taking into a detailed behavior of the backoff counter (i.e. freezing period). Second, we propose an enhanced version of W2PAA aiming at improving both system and user-oriented performances. Aiming at validating the analytical model and comparing the performance of both versions of W2PAA, we used computer simulation. Obtained results, validate the analytical model in one hand, and clearly indicated the gain of both W2PAA versions by report to the basic UL-Single User on the other hand.

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Section: Basic Wait-to-pick-as-availablementioning

confidence: 99%