Radio Resource Management in Multi-Tier Cellular Wireless Networks

CHAPTER 8

RESOURCE ALLOCATION IN CDMA-BASED MULTI-TIER HETNETS

RRM for CDMA wireless cellular networks has been an active research topic over the past several years. To motivate research issues in multi-tier wireless HetNets, we first review some important resource allocation algorithms, which have been proposed for homogeneous wireless networks. Development of distributed power control for CDMA cellular networks is an interesting research topic that has achieved great success so far. In 1993, Foschini and Miljanic proposed one of the most popular power control algorithms, which is usually referred to as Foschini–Miljanic power control algorithm today [1]. This power control scheme can be implemented distributively, which converges to a Pareto-optimal fixed point supporting predetermined target SINRs using minimum transmission powers whenever possible [2]. Following this great discovery, Yates developed an elegant analytical framework in his seminal paper [3], namely the standard function approach, which can be used to establish convergence and to design power control algorithms. It was later shown in [4,5] that the Foschini–Miljanic power control algorithm can be indeed designed by using noncooperative game theory with an appropriate payoff function. The Foschini–Miljanic power control algorithm aims to achieve predetermined target SINRs, which, therefore, does not attain high system throughput in lightly loaded networks. In highly loaded networks, different user removal and ...