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Priority and resource controlled channel switching in W-CDMA
1999 (English)Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

In the third generation telecommunication system, W-CDMA, data traffic will allocate a significant part of the resources. Data traffic has often an irregular traffic pattern, which results in difficulties to maintain high system utilization. Two different channel types are designed to handle the traffic irregularity. First, the common channel, which is a shared channel intended for idle users or users with a small amount of data to transmit. Second, the dedicated channel which is a high-speed channel used to transmit a larger amount of data at high speed. A problem exists in when to switch between these two channel types. This document aims for the possible weaknesses in state-of-the-art solutions for switching between channel types in down-link and attempts to enhance performance by designing better algorithms. The algorithms are evaluated through simulations and theoretical reasoning. The algorithms supports user priorities since it should be included in order to achieve highest possible customer satisfaction. This document shows enhanced performance with dynamic algorithms that adjust quickly to the current system load.

Place, publisher, year, edition, pages
Keyword [en]
Technology, data, telecommunications, W-CDMA, channels, switching, common, dedicated
Keyword [sv]
URN: urn:nbn:se:ltu:diva-50411ISRN: LTU-EX--99/308--SELocal ID: 7ad79adb-8c8d-41f0-a95c-cda0417eaab1OAI: diva2:1023770
Subject / course
Student thesis, at least 30 credits
Educational program
Civil Engineering programmes 1997-2000, master's level
Validerat; 20101217 (root)Available from: 2016-10-04 Created: 2016-10-04Bibliographically approved

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