Efficient use of partially overlapped channels in 2.4 GHz WLAN backhaul links

In 2.4 GHz WLANs, channel assignment is critical issue due to minimum availability of orthogonal channels (1, 6 and 11). WLANs which supports Multiple Access Points (APs), either require maximum number of orthogonal channels for individual links to reduce channel interference or some new strategies adopt to improve the utilization of orthogonal channels. This paper is deeming to find an efficient way to utilize the partially overlapped channels of 2.4 GHz band as the orthogonal channels for WLAN backhaul links, which has achieved high throughput due to minimum interference between static links of backhaul with directional antennas. In proposed work an equation is derived to find sets of orthogonal channels of 2.4 GHz band, directed graph applied on sets of orthogonal channels in two-step approach (direct links and directional links) of each node. This study has produced throughput results approximately double as compared to traditional channel assignment with utilization of Partially Overlapped Channels (POS). Future lines of this work would be to analyze proposed channel assignment over backhaul using 5 GHz band to reduce adjacent channel interference, same concept can be useful to increase the system performance with MIMO and wireless mesh networks.