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HSDPA Troubleshooting Case Studies

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HSDPA Troubleshooting Case Studies

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Student Guide

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HSDPATroubleshooting Case Studies

80-W0848-5 Rev E

About Qualcomm University

HSDPA Troubleshooting Case Studies

Qualcomm University (“QU”) offers the advanced technology training solutions you need to stay on the cutting edge of wireless technology. Visit the QU website for more information about individual training products, international training centers, and distance learningopportunities, along with a complete list of classes—all developed by QUALCOMM Incorporated, the pioneers of CDMA.

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Notes

© 2008 QUALCOMM Incorporated

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HSDPA Troubleshooting Case Studies

80-W0848-5 Rev E

Table of Contents References ..............................................................................................5 Learning Objectives .....................................................................................6 Motivation..............................................................................................7 HSDPA System Architecture.......................................................................8 HSDPA Protocol Stack ................................................................................9 HSDPA Protocol Stack and Performance Issue Indicators........................10 What Single User Throughput to Expect from Cat12/6 UE?....................11 HSDPA data flow across UE and UTRAN................................................12 MAC-hs and RLC-AM: UTRAN ..............................................................13 MAC-hs and RLC-AM: UE.......................................................................14 MAC-hs Details .........................................................................................15 Data Flow Example– HARQ and UE Re-ordering Queue .......................16 MAC-hs PDU ............................................................................................17 MAC-hs Window Mechanism ...................................................................18 MAC-hs Timer Mechanism .......................................................................19 MAC-hs Window and Timer mechanism...