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• W2567653316 abstract "During the last years, the mobile communications market in the western developedcountries has reached a standstill, with a market penetration higher than 100% in mostcountries such as, Spain 115%, United Kingdom 120% and Italy with more than150%.So the network operators have focused their strategy in moving into a new market stilldeveloping, the data, that could help the operators to increase their saturated income.The solution mostly adopted by the operators is to offer the mobile broadbandoffering flat rate schemes to the customers for a monthly fee. The mobile broadbandappeals to wide range of users, such as corporate users and especially to studentswhich give them the liberty to access internet across different locations such asuniversity, cafe or shared accommodation.That creates a set of challenges to the operators having to improve their network inorder to cope with this huge new demand for high-speed data, to successfully satisfythese requirements, Third Generation networks must support high user data rates,especially on the downlink direction of the communication path due to its heavierload. For these reason, the 3GPP standardized in Release 5 the technology HSDPA(High Speed Downlink Packet Access). The HSDPA provides a cost effectivesolution to provide high-speed data to the customers specially focused to increase theoverall cell capacity thanks to the fact that the resources are shared among the users.This project has consisted on the design of a HSDPA simulator and on the evaluationof the performance of VoIP and web browsing traffic in HSDPA.The idea of this project started on an industrial placement in Orange UK, in thedepartment of Access Network. Between other tasks the CQI (Channel QualityInformation) were modelled using samples taken from the live network.In order to do a more theoretical analysis and make use of the CQI modelling, afterthe placement, the design of the complete simulator has been made under the directionof Professor Ferran Casadevall.The objective of this project is then to simulate an HSDPA cell in differentconditions, specially focused in different cell loading conditions such as:· Different number of users, up to 100 users per cell.· Different traffic profiles, choosing between VoIP and web users.Once the simulations have been carried out, the results have been analysed in detail,offering figures and facts of how the throughput and the traffic delay changes withdifferent load conditions. As both the VoIP and web traffic have different thresholdsof maximum delay defined by international entities, the simulations could be used toasses to define, the maximum number of HSPDA users in cell. This will help tocapacity planners to decide the rollout strategy, based on the simulation results.This project has been developed with the tool Matlab. This tool has been chosenbecause it allows an effective code development and at the same time it is very usefulto produce graphics and to compute difficult numerical calculations." @default.
• W2567653316 created "2017-01-06" @default.
• W2567653316 creator A5073393884 @default.
• W2567653316 date "2010-07-01" @default.
• W2567653316 modified "2023-09-24" @default.
• W2567653316 title "Performance evaluation of VoIP and web services in HSDPA" @default.
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