System design and software-defined implementation for hyper-cellular network

Abstract

The rapid growth of traffic data in mobile networks has led to a shortage in spectrum resources and a significant increase in energy consumption. In order to solve these problems, hyper-cellular networks provide dynamic sleep and resource scheduling schemes for base stations through careful separation of control coverage and traffic coverage, thus greatly improving network spectral and energy efficiency. However, how to separate network control coverage and traffic coverage without destroying existing terminal protocol stacks is a problem that still needs to be solved. We analyze the signaling flow and protocol architecture of GSM and LTE systems, and then propose a separation scheme for these systems in a hyper-cellular architecture. The basic idea is to accomplish the separation of base station functionality by dividing the logical channel, thus achieving separation of control coverage and traffic coverage. With the aid of software radio equipment, we build an experimental platform to verify the proposed solutions. Combined with other technologies such as cloud radio access networks and Software Defined Networks, we propose a software-defined hyper cellular architecture and create a cloud-based demonstration platform.