Name: Multi-User Access in High-Efficiency Wlans: Ofdma Multi-User Communications in Ieee 802. 11Ax hew (en Inglés)
SKU: 62088541
Price: 87.59 USD
Availability: InStock
Author: Saloua Brahmi; Mohand Yazid
ISBN: 9786207488285

portada Multi-User Access in High-Efficiency Wlans: Ofdma Multi-User Communications in Ieee 802. 11Ax hew (en Inglés)

Multi-User Access in High-Efficiency Wlans: Ofdma Multi-User Communications in Ieee 802. 11Ax hew (en Inglés)

Formato

Libro Físico

Editorial

Lap Lambert Academic Publishing

Autor

Saloua Brahmi; Mohand Yazid

Idioma

Inglés

N° páginas

120

Encuadernación

Tapa Blanda

ISBN13

9786207488285

Multi-User Access in High-Efficiency Wlans: Ofdma Multi-User Communications in Ieee 802. 11Ax hew (en Inglés)

Saloua Brahmi; Mohand Yazid (Autor) · Lap Lambert Academic Publishing · Tapa Blanda

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Reseña del libro "Multi-User Access in High-Efficiency Wlans: Ofdma Multi-User Communications in Ieee 802. 11Ax hew (en Inglés)"

To promote the MU (Multi-User) communications in High-Efficiency WLANs, the new IEEE 802.11ax standard introduced the concept of RU (Resource Unit) by means of the OFDMA transmission technique. Although the OFDMA MU communications enable multiple users to be served at the same time in both DL (Down-Link) and UL (Up-Link) directions, several challenges remain to be met in order to design a MAC (Medium Access Control) protocol that fairly allocates and effectively utilizes the RUs. The challenges addressed are: (1) define when and how using 802.11ax control frames, (2) establish a fair sending policy of UL needs, (3) adopt a strategy to select a channel structure, and (4) avoid loss in spectral efficiency and timeout BA (Block Acknowledgment). In this thesis, we proposed the FAEU-RUs protocol (Fair Allocation and Effective Utilization of RUs) by meeting each of the challenges of OFMDA MU communications. The performance evaluation demonstrates that the FAEU-RUs protocol significantly enhances the overall performance of the network but also the individual performance of each type of traffic (DL and UL) and each category of station.