In the context of a network with multiple access points (APs) utilizing coordinated orthogonal frequency division multiple access (C-OFDMA), a channel unfairness among APs arises when the APs participating in the coordination decrease the available channels accessible to non-coordinated nodes. This study introduces a solution in the form of C-OFDMA, in which coordinated sides prioritize channels that may not be used by the non-coordinated sides for resource allocation to STAs that are overlapped within the range of the non-coordinated sides. Consequently, conflicts between non-coordinated and coordinated APs are minimized and non-coordinated nodes cannot have their number of available channels decreased through carrier sense. This enhances channel fairness among all APs, thus facilitates the effective implementation of C-OFDMA. Moreover it maintains system throughput in C-OFDMA without RU reuse. Based on simulations, in systems where non-coordinated and coordinated nodes are in close proximity, the proposed method enhances these throughput and fairness compared with conventional C-OFDMA approaches. This allows C-OFDMA to be efficiently utilized even in dense wireless local area networks, which are increasing in popularity.
Multiple Access Point Coordinated Orthogonal Frequency Division Multiple Access Considering Channel Fairness of Non-Coordinated Nodes
2024-10-07
2341259 byte
Conference paper
Electronic Resource
English
Non-Orthogonal Frequency Division Multiple Access
IEEE | 2020
|British Library Online Contents | 2001
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