Course
302 - Optimizing
With Surveyor/WMI
Using Grayson Surveyor/WMI In CDMA System
Performance Optimization
Scope
This
one-day seminar explains the objectives, principles, and techniques for
analyzing CDMA system performance data using the Grayson Electronics Wireless
Measurement Instrument and Surveyor software. Underlying principles are
reviewed along with common CDMA system problems, symptoms, root causes, and
solutions. At conclusion, students should be able to interpret and analyze the
real-time displays and data collected by Surveyor, 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.
Target Audience
Engineers
and technicians responsible for maintaining, monitoring, and optimizing CDMA
wireless systems
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 Surveyor. 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 the previous day’s Course 301
student-collected runs. Previously-recorded data also is available to
illustrate issues and problems which may not appear in the data collected
locally.
Applicability
CDMA
systems of all frequency bands (800, 1900 MHz.) and all network equipment
manufacturers (Lucent, Nortel, Motorola, QualComm, Samsung)
Topical Outline
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 Real-Time Surveyor Displays
¨
Parameters
and values
Data file Format Conversion and Interpretation
¨
Creating
and using Parameter Files: CDMA RF Parameters and values
¨
Message
Files: CDMA Messaging Structure and Call Processing Events
Common CDMA Problems: Symptoms, Data Indications, and
Solutions
¨ Forward Link Interference, PN Planning Issues, Window Settings
¨
Slow
Handoff
¨
Excessive
Soft Handoff
¨
Dropped
Calls and Access Failures
¨
Recognizing
software bugs and protocol violations, both system and handset
¨
Coverage
Holes
Prerequisites
Students
are expected to be familiar with the basic installation, setup, and operation
of the Grayson Electronics WMI/Surveyor, either by taking Course 301 or from
equivalent outside training or experience.
Course Documentation and Materials
Course
Manual provided per student
Diskette
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 (615)
244-4105