A Review on Techniques to Improve the Cell Edge Performance for Wireless Networks

Abstract

Massive increase demand to support higher data rates for broadband services like online gaming, video on demand (VoD), triple play over wireless networks requires higher data rates. In wireless networks, the received signal power decrease as the propagation distance increase. This results in the following data rate coverage behavior where users at the center-region experienced excellent QoS performance. However, in cell edge region, user experience poor QoS where the spectral efficiency and power efficiency are very low. This is due to low received signal and high fading effects where cell-edge user is far away from Access Point (AP). Due to this scenario, various techniques have been present but there are still some challenges that have not been adopted by previous researches. This paper presents A Review on Techniques to Improve the Cell Edge Performance for Wireless Networks. In this paper, review of published researches starting from 2015 onwards that focus on improvement of cell edge performance is presented. The study can be divided into two parts which are techniques for cell edge improvement over cellular networks and WLAN respectively. In the literature, there are numerous approaches by previous researchers to achieve a better performance of cell edge user's over cellular networks: such as Cooperative Transmission Scheme, Packet Scheduling, Soft Frequency Reuse and Downlink Optimal Power Allocation Scheme. While in Wireless LAN, there are only several work that have been done, and most of the approach focus on link adaptation technique. In order to solve the cell-edge issue in WLAN, the author proposed Adaptive Modulation Coding and Scheme for IEEE 802.11ac.