Silvia Ruiz-Boque

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—The green communications paradigm has been receiving much attention in wireless networks in recent years. More specifically, in the context of cellular communications, the concept of Cell Switch Off (CSO) has been recognized as a promising approach to reduce the energy consumption. The need is expected to be pressing especially in the next decade with the(More)
—3GPP LTE is the evolution of UMTS which will make possible to deliver next generation high quality multimedia services according to the users' expectations. The flexibility of the downlink OFDM radio interface with Adaptive Modulation and Coding (AMC), MIMO and H-ARQ plays a crucial role in achieving the low latency and high spectral efficiency promised by(More)
The transport block error rate (BLER) is an important indicator of the link quality in UTRA. For every kind of service in UTRA a BER or BLER threshold, that still satisfies the desired quality, can be specified. Then, the target E b /N 0 for that service is the mean E b /N 0 necessary to guarantee the specified BER or BLER threshold. The knowledge of the(More)
— Dynamic optimization of UMTS systems has been gaining a growing interest by the research community. In this context, the current paper concentrates on dynamic automated tuning of RRM parameters to detect whether the uplink or the downlink is the limiting link and force a reconfiguration to balance both and maximize capacity. Modifications of the soft(More)
This paper describes a simulation tool developed for 3G planning and suitable also for some RRM strategies evaluation. The innovative issue is that the simulator is based on data extracted from real GSM/UMTS networks. Considering the extensive use of GSM/UMTS co-siting for 3G network deployment, an accurate representation of propagation, mobility as well as(More)
—3GPP LTE is the evolution of UMTS which will make possible to deliver high quality multimedia services with an improved user experience. Since Radio Resource Management (RRM) has been recognized as a key point to successfully accomplish this target, the performance evaluation of a multi-cell resource allocation scheme applied to LTE downlink (DL) is(More)
This work derives the analytic expression of the feasibility condition for the uplink of a WCDMA mobile communications system with repeaters deployment in a multiservice environment with a general heterogeneous layout. In particular, a compact closed expression for the admission region is presented, suitable for a system where the users belong to an(More)
This paper focuses in the analysis of 100% static and distributed inter-cell interference coordination techniques in the context of LTE networks. Several methods have been modeled and studied with the aim of deriving practical radio planning rules based on the joint effect of operational parameters and thresholds. The investigation places special emphasis(More)
— This paper addresses the analysis of WCDMA systems with repeaters deployment. A generic and compact expression for up-and downlinks evaluation has been mathematically derived so that transmission powers and other radio resource management parameters can be calculated without simplifications. In particular, the real different path delays, taking into(More)