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UMTS CS Call Drop Analysis Guide_BOOK.pdf

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UMTS CS Call Drop Analysis ZTE CORPORATION ZTE Plaza, Keji Road South, Hi-Tech Industrial Park, Nanshan District, Shenzhen, P. R. China 518057 Tel: (86) 755 26771900 800-9830-9830 Fax: (86) 755 26772236 URL: http://support.zte.com.cn E-mail: doc@zte.com.cn PDF created with pdfFactory Pro trial version www.pdffactory.com PDF created with pdfFactory Pro trial version www.pdffactory.com Contents Chapter 1.........................................................................1 Introduction .
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    UMTS CS Call Drop Analysis   ZTE CORPORATION ZTE Plaza, Keji Road South, Hi-Tech Industrial Park, Nanshan District, Shenzhen, P. R. China 518057 Tel: (86) 755 26771900 800-9830-9830 Fax: (86) 755 26772236 URL: http://support.zte.com.cn E-mail: doc@zte.com.cn  PDF created with pdfFactory Pro trial version www.pdffactory.com  PDF created with pdfFactory Pro trial version www.pdffactory.com    Contents Chapter 1.........................................................................1   Introduction....................................................................1   Chapter 2.........................................................................3   Definition.........................................................................3   Definition of Call Drop from Drive Test Aspect.....................3   Definition of Call Drop at OMC Side....................................3   Chapter 3.........................................................................5   Call Drop Analysis............................................................5   Call Drop Reasons............................................................5   Call Drops Caused by Poor Coverage.......................................5   Call Drop Caused by Neighbor Cells.........................................6   Call Drop Caused by Interference...........................................7   Call Failure Caused by Two Cells Using the Same PSC................8   Call Drops Caused by Engineering Causes..............................10   Call Drops Caused by 2G/3G Interoperability..........................12   Call Drops Caused by the System.........................................13   Analyzing Call Drops by DT.............................................13   Analyzing Call Drops by Traffic Statistics...........................15   Procedure of KPI Analysis....................................................16   Basic Methods to Analyze KPIs.............................................17   KPI Analysis Tools..............................................................18   Radio Parameters Involved During Optimization................20   Radio Parameters Related with CS Call Drops.........................20   Timer and Counter Related with Call Drop..............................22   PDF created with pdfFactory Pro trial version www.pdffactory.com    PDF created with pdfFactory Pro trial version www.pdffactory.com

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Jul 24, 2017
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