An Extension of Throughput Estimation Model for Three-Link Concurrent Communications under Partially Overlapping Channels without Channel Bonding in IEEE 802.11n WLAN

Abstract

The IEEE 802.11n wireless local-area network (WLAN) has been extensively deployed world-wide with advantages of flexibility, low costs, and high-speed data transmissions. However, WLAN may face cross-technology radio interferences from co-located WLANs and devices using the unlicensed 2.4GHz band, which makes critical the channel assignment of access-points (APs) from the limited number of partially over lapping channels (POCs) through throughput estimations. Previously, we have studied the throughput drop estimation model for three concurrently communicating links using channel bonding (CB) that has been used to enhance the transmission capacity. In this paper, we extend this model for three concurrently communicating non-CB links. The model accuracy is verified by comparing the estimated throughput with the measured one under various topologies.