User Performance Improvement in Cooperative Ultra Dense Networks with Presence of Walls

Cooperate Communication is considered the key technique of the 5G and B5G cellular networks. While most of works on the cooperative communication try to deploy additional equipment, this paper proposes a system model that utilizes the second nearest BS of the typical user as the relay of this user. Specially, the relay has a wired connection to the serving BS and the user finds the maximum signal power between the desired signals from the serving BS and relay to perform further processing. To analyze the benefit of the proposed system over the conventional one, the coverage probability of the typical user are compared together in the wireless conditions with Rayleigh as small-scale fading and a mixed scenarios of LoS and nLoS as the large-scale fading. Through the analytical results and Monte Carlo simulation, it can be stated that the proposed system can improve the user coverage probability up to 13.5%.