Novel Multi-AP Coordinated Transmission Scheme for 7th Generation WLAN 802.11be

Area of Science:

• Wireless communication networks
• Next-generation wireless local area networks (WLAN)

Background:

• Increasing demand for high-data-rate, time-sensitive applications like 4k/8k video streaming, AR, VR, and gaming.
• Existing wireless local area network (WLAN) technologies face challenges with distributed channel access inefficiency and uplink/downlink flow fairness.

Purpose of the Study:

• To propose a novel transmission scheme for IEEE 802.11be networks.
• To address the fairness problem between uplink and downlink flows.
• To improve overall system throughput for advanced wireless applications.

Main Methods:

• Utilizing multi-access point (multi-AP) coordinated orthogonal frequency-division multiple access (OFDMA) as introduced in IEEE 802.11be.
• Developing a transmission scheme where an access point (AP) shares a transmission opportunity (TXOP) with nearby APs.
• Employing a Markov chain model for mathematical analysis of throughput performance.
• Integrating advanced multi-user (MU) features from IEEE 802.11ax, including TUA, MU cascading sequence, and MU EDCA.

Main Results:

• The proposed scheme effectively improves downlink fairness.
• System throughput is significantly enhanced by the novel transmission strategy.
• The scheme provides improved control over the wireless medium.

Conclusions:

• The proposed transmission scheme offers a viable solution for enhancing IEEE 802.11be network performance.
• Compatibility with conventional IEEE 802.11 protocols makes the scheme potentially universal.
• The approach effectively balances fairness and throughput for demanding wireless applications.