Search results for "UMTS Terrestrial Radio Access Network"

showing 3 items of 3 documents

UMTS radio networks

2006

Publisher Summary This chapter reviews the contributions to the UMTS radio network planning, with the optimization being provided from COST 273 and the real-time tuning, which is related to RRM. The results on UTRAN performance evaluation by the means of simulation tools are also discussed. The UMTS planning includes processes like: the propagation and traffic models, the aspects of parameter planning, and the automatic planning algorithms. An accurate ray-tracing model integrated in a UMTS-capable planning tool allows the radio network planner to reach optimal numbers for the BS deployment and configuration while meeting the service level requirements. Ray tracing can identify the problem …

EngineeringCustomised Applications for Mobile networks Enhanced Logicbusiness.industryComputerSystemsOrganization_COMPUTER-COMMUNICATIONNETWORKSService level requirementPlannerSoftware deploymentUMTS Terrestrial Radio Access NetworkRay tracing (graphics)businesscomputerDimensioningUMTS frequency bandsComputer networkcomputer.programming_language
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Radio network aspects

2006

Publisher Summary This chapter reviews the mobile radio access network reference scenarios (MORANS)—used to study the performance of the radio cellular networks related to UMTS and the methodologies for the radio network performance evaluation, including the theoretical connectivity models,. It discusses the techniques for radio network optimization such as the packet scheduling for cellular systems or system capacity maximization through the use of multiple antennas. . In order to perform system simulations, reference values for the main parameters characterizing a WCDMA network, are required. MORANS is used for the identification of such parameters. The parameters are classified in two gr…

Mobile radioAccess networkComputer sciencebusiness.industryCall Admission ControlComputerSystemsOrganization_COMPUTER-COMMUNICATIONNETWORKSReal-time computingNetwork congestionUMTS Terrestrial Radio Access NetworkCellular networkRadio resource managementbusinessUMTS frequency bandsComputer network
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Dynamic packet scheduling performance in UTRA Long Term Evolution downlink

2008

In this paper we evaluate the performance of dynamic Packet Scheduling (PS) of 3GPP UTRAN Long Term Evolution (LTE) Downlink. Packet scheduling is of utmost importance in 3G LTE, because all traffic types with different Quality of Service requirements are competing of the resources. We present a decoupled time and frequency domain packet scheduling framework for LTE downlink. Simulation results with three basic packet scheduler combinations with different amount of fairness are presented in four different 3GPP macro simulation cases to show the both extremes in tradeoff between fairness and spectral efficiency. In addition, the effect of multiuser diversity on packet scheduling performance …

Network schedulerbusiness.industryComputer scienceQuality of serviceUMTS Terrestrial Radio Access NetworkComputerSystemsOrganization_COMPUTER-COMMUNICATIONNETWORKSFairness measureFair queuingFast packet switchingRound-robin schedulingbusinessScheduling (computing)Computer network2008 3rd International Symposium on Wireless Pervasive Computing
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