Radio Resource Management
2.1 Overview of Radio Resource Management
The concept of Quality of Service (QoS), which entails service differentiation and the possibility of adapting resource allocation to the specific service requirements, has opened the door to an important increase in the provision of advanced services to the mass market. In this framework, Radio Resource Management (RRM) has become a key element of current and future wireless and wired communication networks to provide the negotiated QoS to the end users. In the end, RRM algorithms have a direct impact on the performance experienced by each individual user and, furthermore, on the overall network performance. In consequence, they have to make the most of the available resources for the benefit of users and operators. When specifically addressing Orthogonal Frequency Division Multiple Access (OFDMA) systems, the importance of RRM algorithms becomes crucial since the system performance to a large extent depends upon these mechanisms. Besides, the complexity of the system, encompassing time, frequency and space dimensions, and the increasing need of reducing the OPerational EXpenditures (OPEX) of the network, encourages all the agents involved in the wireless market to optimize the operation of the RRM algorithms.
In future wireless systems, like 3GPP Long Term Evolution (LTE) LTE or the evolution of Worldwide Interoperability for Microwave ...