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In IEEE 802.11, Load Balancing Algorithms (LBA) considers only the associated stations to balance the load of the available Access Points (APs). However, although the APs are balanced, it causes a bad situation if the AP has a lower signal length (SNR) less than the neighbor APs. So, balance the load and associate one mobile station to an access point without care about the Signal to Noise Ratio (SNR) of the AP cause possibly an unforeseen QoS; such as the bit rate, the end to end delay, the packet loss, ? In this way, the authors study an improvement load balancing algorithm with SNR integration at the selection policy.
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