Course 403 - Using Agilent E-7480 Post-Processing
Software In CDMA System Performance Optimization
Scope
This
one-day seminar introduces the Agilent E-7480 software analysis tool and shows
the objectives, principles, and techniques for its use in optimizing CDMA
system performance.
Software
installation and hardware requirements are reviewed and installation is
completed if not already successfully completed by the customer.
Using
local data collected earlier in Course 401, all pertinent features and analysis
capabilities of the tool are demonstrated and explored. Example data may be
supplemented with previously-captured examples of classical system deficiencies
or anomalies where necessary to illustrate specific problems. After basic capabilities have been
demonstrated and understood, the prime emphasis shifts to effectively using the
power of post-processing to find and study specific events and derive system
statistics.
At
conclusion, students will be able to manage drive-test files in the format
required for post-processing, extract system performance statistics from data
files, recognize symptoms of common problems, and identify appropriate
corrective actions to be taken.
This
course is network-hardware-generic, focusing on the RF air interface and
specific behavior of subscribers’ handsets operating under applicable
standards. It complements, but does not replace, network manufacturers’
specific “System Optimization” courses which focus largely on hardware-specific
and proprietary details of internal network operation and may not include the
detailed CDMA RF perspective presented here.
Applicability
CDMA
systems of all frequency bands (800, 1900 MHz.) and all network equipment
manufacturers (Lucent, Nortel, Motorola, QualComm, Samsung)
Topics
·
Introduction and Post-Processing overview
·
Software Installation: PC Requirements, Installation Procedures, File
Management
·
Software Features and Operations
·
Data Conversion
·
Data Streams and the Browser
·
Message Files: CDMA Messaging Structure and Call Processing Events
·
Common CDMA Problems: Symptoms, Data Indications, and Solutions
·
Poor-Coverage Issues: characteristic signatures in the data
·
Forward Link Interference
·
Data signatures, PN Planning issues, setting window sizes
·
Slow Handoff Issues
·
Signatures and causes
·
Excessive Soft Handoff
·
Signatures, causes, RF changes vs. parameter manipulation techniques
·
Side-effects of suppressing soft-handoff
·
Access Failures
·
Signatures, causes, mechanics of the probing protocol and parameters
·
Dropped Calls
·
Identifying causes from data signatures
·
Using Mobile Data to look for bad network hardware
·
Benchmarking and Tracking
·
Spotting software bugs and protocol violations, both system and handset
Target Audience
Engineers
and technicians responsible for maintaining, monitoring, and optimizing CDMA
wireless systems.
Prerequisites
·
Basic installation, features, and operation of the Agilent
Post-ProcessingTool. This knowledge
comes from Course 401 or from equivalent training or experience.
·
Prior familiarity with the CDMA air interface, including mechanics of
handoff, CDMA messaging, power control, and PN planning issues. This
knowledge can come from Course 402 or from equivalent training or experience.
Course Presentation Setting and Methods
This
course includes classroom presentation of the introduction and review topics
using course materials and computer projection. The remainder of the course
consists of live analysis and demonstrations drawn from collected data files.
Course Documentation and Materials
Course
Manual provided per student
CD
with example files and reference material per student; incidental supplies
Facilities and Hardware Requirements
·
Classroom:
·
Comfortable student seating
·
Desktop space for note-taking and laptop PC usage
·
Projection screen or surface
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Scott Baxter
& Associates
PO Box 158777
Nashville,
Tennessee 37215
USA
Phone (800)
890-0829
Fax (866) 244-4105