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Analytical model considering varying numbers of RA-RUs to determine how to allocate the RA-RUs in practice

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Abstract

The uplink OFDMA−based random access (UORA) is a key mechanism in the 802.11ax protocol. The advantage of the UORA is that nodes can send their frames quickly without requiring resources from the AP; the disadvantage is that the UORA can be heavily affected by collisions, resulting in low channel efficiency. In this paper, we focus on constructing an analytical model in which the number of random−access RUs (RA−RUs) is taken as a random variable. We investigate how the key parameters, the number of RA−RUs and the allowed maximum transmission times affect the network performance. Based on this, we explore how these two parameters can be set in practice. The comparison results show that our scheme outperforms conventional 802.11ax and previous work in terms of delay and the packet delivery ratio (PDR).

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Authors and Affiliations

  1. Information Center, HangZhou Normal University, HangZhou, 310036, China

    Deqing Zhu

  2. College of Data Science, Jiaxing University, Jiaxing, China

    Genmei Pan

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  1. Deqing Zhu
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  2. Genmei Pan
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Correspondence to Deqing Zhu.

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Zhu, D., Pan, G. Analytical model considering varying numbers of RA-RUs to determine how to allocate the RA-RUs in practice. Wireless Netw 30, 253–265 (2024). https://doi.org/10.1007/s11276-023-03474-7

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