Adaptive Resource Allocation Scheme for Wireless Cellular Networks

As spectrum scarcity and inter cell interference (ICI) are both limiting factors in wireless cellular system, ICI coordination (ICIC) techniques play an important role in improving system performance. Soft Frequency Reuse (SFR) is an effective way to manage the spectrum and reduce ICI in cellular system. It carries out resource allocation prior to system deployment, and dynamic schemes allocate resource regardless of the actual network traffic and interference distribution, both of which limit the potential system performance. Energy Internet’s deployment is becoming more and more intensive. It is important to increase system throughput and reduce data error rate. In this paper, an adaptive resource allocation scheme (ARAS) is proposed which first dynamically optimizes resource allocation according to interference distribution and traffic load. In ARAS, the interference thresholds and the roles of victim and aggressor require to be specific. For each victim user, their dominant interferer (DI) applies the Different Evolution (DE) to find the optimal transmission power reduction, aiming at improving victim users’ performance and guaranteeing data requirement. To improve system performance, extra resources are allocated to balance ICIC and system capacity. Simulation results show that the ARAS achieves better SINR and throughput compared with existing ICIC schemes.