By Leijia Wu, Kumbesan Sandrasegaran
This ebook discusses the elemental suggestion of universal Radio source administration (CRRM), in particular at the Radio entry applied sciences choice a part of CRRM. It introduces interplay features (information reporting functionality and RRM choice aid functionality) and 4 interplay levels (from low to very excessive) of CRRM. 4 attainable CRRM topologies (CRRM server, built-in CRRM, Hierarchical CRRM, and CRRM in consumer terminals) are defined. The booklet provides diversified Radio entry applied sciences choice algorithms, together with unmarried criterion and a number of standards dependent algorithms are offered and compares them. eventually, the e-book analyses the benefits and downsides of the various choice algorithms.
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Additional info for A Study on Radio Access Technology Selection Algorithms
Simulation results in  prove that the force based algorithm can achieve a better performance in terms of load balancing, overall traffic capacity, and QoS compared to the random selection algorithm. In , Yu and Krishnamurthy proposed a RAT selection algorithm aimed to maximize the overall network revenue and guarantee QoS constraints in an integrated WLAN/CDMA network. This algorithm is formulated as a Semi-Markov Decision (SMD) problem whose state space is defined by a set of WLAN QoS constraints: throughput, average delay, and CDMA network Signal to Interference Ratio (SIR) outage blocking probability.
L. Wu, K. Sandrasegaran, A Study on RAT Selection Algorithms in Combined UMTS/GSM Networks. ECTI Trans. Electr. Eng. Electron. Comm. 6(2), (2008) 7. J. Pérez-Romero, O. Sallent, R. Agustí, Network controlled cell breathing in multi-service heterogeneous CDMA/TDMA scenarios, in IEEE 64th Vehicular Technology Conference (VTC2006) Canada, September 2006, pp. 1–5 8. J. Pérez-Romero, O. Sallent, R. Agustí, A novel metric for context-aware RAT selection in wireless multi-access systems, in The IEEE International Conference on Communications, 2007(ICC’07), Glasgow, June 2007, pp.
The OSM has a fuzzy logic based control component and a MCDM component too. The fuzzy logic based control component has four subsystems considering received signal strength criterion, mobile station speed criterion, service type criterion, and radio resources availability criterion respectively. The inputs of the four subsystems are received signal strengths of the three RATs, 32 4 Multiple Criteria Based Algorithms Mobile Station (MS) speed, delay limit and required bit rate, and radio resources availability respectively.