Abstract
In a wireless local area network (WLAN), when the contention is fierce, most of the frames are collided and backoff windows are doubled, resulting in a low channel efficiency. 802.11 be introduces multi-link opertaions (MLO) but faces nonsimultaneous transmit and receive (NSTR) problem which limits the prospects of multi-links. In this paper a new multi-link operation scheme is proposed. When a link is transmitting, antennas from the other link usually suffer huge inteference and can’t receive properly. In the proposed scheme the interfered antennas are switched to the transmitting link to monitor collisions. If collisions are detected, one of the colliders stops transmitting. Collisions are thus eliminated at the early stage. Simulation shows that using this scheme, the channel efficiency of a highly competitive network stays at a high level compared to traditional solutions. Simulation also shows that the proposed scheme offers better QoS.
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Acknowledgment
This work was supported in part by the National Natural Science Foundations of CHINA (Grant No. 61871322, No. 61771390, and No. 61771392), and Science and Technology on Avionics Integration Laboratory and the Aeronautical Science Foundation of China (Grant No. 20185553035 and No. 201955053002).
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© 2023 ICST Institute for Computer Sciences, Social Informatics and Telecommunications Engineering
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An, D., Li, B., Yang, M., Yan, Z. (2023). A Collision Aware Multi-link Operation for Next Generation WLAN. In: Deng, DJ., Chao, HC., Chen, JC. (eds) Smart Grid and Internet of Things. SGIoT 2022. Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering, vol 497. Springer, Cham. https://doi.org/10.1007/978-3-031-31275-5_25
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DOI: https://doi.org/10.1007/978-3-031-31275-5_25
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