Co-Existence of LTE Communication with WLAN in Unlicensed Bands: A Review

Abstract

Mobile data traffic is increasing exponentially. In order to meet data traffic demand, the idea is to co-exist LTE with WLAN in 5GHz unlicensed band. Unlicensed spectrum has high flexibility compared to licensed. It is an open and free spectrum resource. LTE won’t sense the channel before transmission. It causes interference when co-exists with WLAN. Proposed algorithms are applicable only for a limited no. of users, static networks, and downlink transmissions. A Fair co-existence algorithm is needed that supports for multiple users, subframes scheduling, uplink transmission, dynamic networks, and maintains good throughput. This paper will examine various aspects of coexistence mechanisms with their limitations and concerns.