Course 402 - CDMA
Performance Optimization Principles And Practice Using The Agilent E-7473a
Network Measurement System
Scope
This
one-day seminar demonstrates the objectives, principles, and techniques for
analyzing CDMA system performance data using the Agilent E-7473A Network
Measurement System. Underlying CDMA principles are reviewed along with common
CDMA system problems, symptoms, root causes, and solutions. At conclusion,
students will interpret and analyze the real-time displays and data collected
by the tools, 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 data
collected with the measurement system tools. 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
·
CDMA Air Interface Review
·
Call Processing from the perspective of the Subscriber Handset
·
Basic CDMA System Network Architecture and Hardware Overview
·
Problem-solving perspective: System-side and Subscriber-side resources
·
Interpreting Data Displayed by Drive-Test collection software
·
Parameters and values
·
“Signatures” of specific system problems
·
Data file management and interpretation
·
Handset Data: CDMA Messaging Structure and Call Processing Events
·
PN Scanner Data: Recognizing interferors and managing search windows
·
Spectrum Analyzer Data: useful interference and traffic-related
measurements
·
Common CDMA Problems: Symptoms, Data Indications, and Solutions
·
Coverage Holes
·
Forward Link Interference, Reverse Link Interference, Rogue Interferors
·
PN Planning Issues, Window Settings
·
Slow Handoff
·
Excessive Soft Handoff
·
Dropped Calls and Access Failures
·
Recognizing when deeper problems are involved
Target Audience
Engineers,
technicians, and management/support personnel responsible for maintaining,
monitoring, and optimizing CDMA wireless systems.
Prerequisites
Students
are expected to be familiar with the basic installation, setup, and operation
of the Agilent E-7473A Network Measurement System, either by taking Course 401
or from equivalent outside training or experience.
Course Presentation Setting and Methods
This
course begins with classroom presentation of the introduction and review topics
using course materials and computer projection. Next, actual selected
drive-test files are replayed using Tool.
Attention focuses on call processing, handset performance during
handoffs, and any dropped calls or access attempts which may be observed. Markov
call statistics are observed and interpreted.
The
data used for this analysis is normally drawn from prior Course 401
student-collected runs. Previously-recorded outside data also is available to
illustrate issues and problems which may not appear in the data collected
locally.
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: (can be arranged by
us with prior notice, at additional cost)
·
Comfortable student seating
·
Desktop space for note taking and laptop PC usage
·
Projection screen or surface
Return to CDMA Courses and Contents
Scott Baxter
& Associates
PO Box 158777
Nashville,
Tennessee 37215
USA
Phone (800)
890-0829
Fax (866)
244-4105