Throughput Aware Users Allocation Scheme for Coexistence of the LTE system and 802.11ax WLANs

With the explosive growth in mobile users carrying various devices such as smart phones and portable computers, wireless local area networks (WLANs) are densely deployed. The IEEE 802.11ax standard, targeting at the next generation WLAN and scheduled to be published in this year, addresses the challenges arising from dense WLAN deployment. In the near future, coexistence of the 802.11ax WLANs and the long term evolution (LTE) system will be popular. It is significant to design a mobile user allocation scheme to assign each mobile user in the common coverage of the LTE system and the 802.11ax WLANs to the LTE system or the 802.11ax WLANs, so that total throughput in the coexistence area is improved. In this paper, we present a throughput aware user distribution (TAUD) scheme. The TAUD scheme maximizes the total throughput by separating the mobile users in the coexistence area of an 802.11ax WLAN and the LTE systems into two groups with each connecting the LTE system or the 802.11ax WLAN. The numeric results show that the proposed scheme can improve throughput considerably.