Transcript My UWI - Lucent Co-op Program Experience

UWI - Lucent Co-op
Program Experience
Delia P. Moore
Introduction
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Co-op Student:
Delia P. Moore

Technical Manager:
Kee Yau

Technical Mentor
Wilson Li

Group:
TDMA Call Processing
Team
7/14/99
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About Myself

Citizenship:
Republic of Trinidad and Tobago, south Caribbean.
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University:
University of the West Indies, Trinidad.
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Undergraduate Studies:
B.Sc.. Electrical and Computer Engineering.
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Work experience before Lucent:
Instrumentation and Control system optimization
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3
Topics of Discussion
7/14/99
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Discussion on Project Assignments
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Other assignments & activities
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Future research interests
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Conclusion
4
Project Assignments
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Project 1:
Group Web Page Design

Project 2:
To implement MR fix for TDMA
DCCH message routing
inefficiency.
7/14/99
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Supporting Training Plan
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Environment orientation



Programming basics

C Language for Programmers

JavaScript Basics and Beyond
Software Development basics

7/14/99
New101, Telephony101, Wireless101, SUN101
SDE101, CP101, LAB101
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Project 1- Web
Development Process

Planning
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Design
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Implementation
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Analysis
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Feedback
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Maintenance
Group Web Page
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Project 2 - MR: Digital Control Channel
(DCCH) Message Re-route
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What is the Digital Control Channel (DCCH)?

Channels for transmitting control information
 Implemented
7/14/99
on TDMA logical channels
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Project 2 - MR: Digital Control Channel
(DCCH) Message Re-route
DCCH Channel Structure
DCCH
Reverse Link
Forward Link
(Uplink, RDCCH)
(Downlink, FDCCH)
RACH
SPACH
BCCH
SCF
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SMSCH
PCH
F_BCCH
E-BCCH
ARCH
S-BCCH
RESERVED
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Project 2 - Description
PROBLEM - Inefficient message routing
DCCH Messages from
The Call Processing/Database Node (CDN)
to
The Cell Site Call Processing Setup Process
are routed via
The Cell Site Voice Call Control Process.
SOLUTION
Reroute message to bypass Control Process
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Project 2 - MR Problem and Solution
CDN
Cell Site
INPUTS
MCR
CCP_PROCNO
(Procno 19)
DCCH
Message
msgtype
Cell site voice call
control process
CPdcchmsg()
CCP_CPSU
(Procno 22)
dcchmsg_ptr
OUTPUT
(return to parent)
CPFAIL
or
CPSUCCESS
CDN
MCR
msgtype
dcchmsg_ptr
Cell site call processing
setup process
Call Processing and Database Node
Mobile Call Register
Sub-message type e.g. CP_USER_ALERT (page)
Pointer to location of DCCH message (MGDCCHMSG)
Original Message Path
Message path after re-route
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Project 2 - Message routing
CDN and other ECPC machines use OSDS messaging
OSpid structure
procno (32 bits)
pcrid (16 bits)
procno
pcrid
uniq
rsvd
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rsvd (8 bits)
uniq (8 bits)
The process number - uniquely identifies each process
The processor ID number - uniquely identifies each machine
The uniquness
Reserved for future use
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Coding Process
Steps in using the Change Management
System (CMS)
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Setup Environment
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Create and assign MR
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Edget files
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Modify Code
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Edput/Build
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Inspect
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Developer Testing
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Developed Test Plan based on scenarios:
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Mobile Terminated SMS in home system on DCCH
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Mobile Terminated SMS in visited system on DCCH
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Mobile originated SMS
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Tests carried out in lab on OFC then PR
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Tools used in lab
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mcsim
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Ftmsgflags
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tcmon
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uxcptrace - example of results
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Other Assignments and
activities
7/14/99
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MR and testing assists
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R14.0 SWAT Team Web Page
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Group events
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Lucent Taekwondo Club
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Junior Achievement
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Summer intern orientation activities
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Research interests



7/14/99
Investigation of need for Control Channel
Priority Treatment in Government Emergency
Telecommunications System (GETS).
Creation of a software process on the AP to
implement address translation functionality
for SS7/IP.
Study of telecommunication systems in the
Caribbean. Potentials for Lucent.
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Thank You

Department Head -
Thayer Johnson

Technical Manager -
Kee Yau

Technical Mentor -
Wilson Li
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Co-op Committee -
Juliet Layne
Walter Amos
Camille Watson
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Group members
Karl Lin
Mark Dyer
Casey Wu
7/14/99
Tomeko Sims
Sanjiv Bhatt
Alex Stojimirovic
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