Wireless Data Tutorial

10/6/99


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Table of Contents

Wireless Data Tutorial

Introduction

Tutorial Topics

Introduction to the Internet

The Internet Problem

Key Internet Concepts

The End-to-End Principle

End-to-End in the Internet

The Internet Reference Model

The Internet Reference Model

How the Internet Model Differs from OSI

The Major Internet Protocols

Connectionless Networks

The Internet Protocol (IP) - RFC791

Internet Services

The IP Header

End-to-End Protocols

The UDP Header

UDP Applications

TCP

TCP vs UDP

Connections

TCP Connection Management

The TCP Header

Wireless IP Considerations

Wireless Performance Issues

Transport Performance

Transmission Control

Nagle Algorithm

TCP Retransmissions

Round Trip Time Estimation

TCP Network Delay Modeling

Estimating Round Trip Times

Filtering Round Trip Time Measurements

Van Jacobson Congestion Control (1988)

VJ Congestion Control - 2

Radio Link ARQ

Other Approaches

Intermittent Connectivity

Mobility

Mobility - Some Common Concepts

Multi-Layer Mobility

Mobility at the IP Layer

IP-in-IP Tunneling

Tunneled Packet Format

Problems with Mobile IP

Mobility in the DNS

Application Mobility

Is Mobile IP Really Needed?

Addressing

Security

Encryption and Security

Point-to-Point Protocol (PPP) - RFC1661

PPP Frame Format

PPP Framing

PPP on Synchronous Channels

Octet-Synchronous PPP

Asynchronous PPP

PPP: Link Configuration Protocol (LCP)

PPP: IP Configuration Protocol (IPCP)

Data on Digital Cellular Channels

The IS-95 Channel

Data on the IS-95 CDMA Channel

Performance Without RLP

Packet Data over IS-95 CDMA

IS-95 CDMA Data Protocol Stack

Quick Net Connect

MDR

GSM

GPRS

Cellular Data Overlays

Cellular Digital Packet Data (CDPD)

CDPD Network Architecture

CDPD Traceroute

HDR

HDR Forward Link

HDR Reverse Link

Speed Considerations

Cellular Data Summary

Ad-Hoc Packet Radio

Examples of Ad-Hoc Nets

Advantages of Ad-Hoc Networks

Challenges of Ad-Hoc Networks

Hidden Terminals

MACA

Conclusion

Author: Phil

Email: karn@qualcomm.com

Home Page: http://people.qualcomm.com/karn