Service support for virtual groups in mobile environments:
Gespeichert in:
| 1. Verfasser: | |
|---|---|
| Format: | Buch |
| Sprache: | English |
| Veröffentlicht: |
Aachen
Shaker
2003
|
| Schriftenreihe: | Berichte aus der Informatik
|
| Schlagworte: | |
| Online-Zugang: | Inhaltsverzeichnis |
| Beschreibung: | Zugl.: Braunschweig, Techn. Univ., Diss., 2003 |
| Beschreibung: | XIII, 175 S. Ill., graph. Darst. |
| ISBN: | 3832223355 |
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Datensatz im Suchindex
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| adam_text | VOM FACHBEREICH FUR MATHEMATIK UND INFORMATIK DER TECHNISCHEN
UNIVERSITAT BRAUNSCHWEIG GENEHMIGTE DISSERTATION ZUR ERLANGUNG DES
GRADES EINES DOKTOR-INGENIEURS (DR.-ING.) VON DIPL.-INFORM. ULRICH
WALTHER SERVICE SUPPORT FOR VIRTUAL GROUPS IN MOBILE ENVIRONMENTS 1.
REFERENT: PROF. DR. STEFAN FISCHER 2. REFERENT: PROF. DR.-LNG. JOCHEN
SCHILLER EINGEREICHT AM: 24. APRIL 2003 DATUM DER PROMOTION: 31. OKTOBER
2003 CONTENTS 1 INTRODUCTION 2 TERMS AND DEFINITIONS 5 2.1 DEFINITION OF
SERVICE CLASS AND TERMS 5 2.2 THE DEEP MAP ELECTRONIC TOURIST GUIDE 7
2.2.1 PROJECT OVERVIEW 7 2.3 GENERAL REQUIREMENTS ON METROPOLITAN AREA
SERVICES . . 8 2.4 OVERVIEW OF THE DEEP MAP APPLICATION ARCHITECTURE . .
11 2.4.1 THE UNDERLYING AGENT INFRASTRUCTURE . . . . 13 2.4.2 NETWORK
ENVIRONMENT 14 2.5 SUMMARY 16 3 TECHNOLOGY OVERVIEW 17 3.1 WIRELESS
TECHNOLOGIES 18 3.1.1 ACCESS TECHNIQUES 20 3.1.2 GLOBAL SYSTEM FOR
MOBILE COMMUNICATION (GSM) . 25 3.1.3 HIGH-SPEED CIRCUIT SWITCHED DATA
(HSCSD) . . 30 3.1.4 GENERAL PACKET RADIO SERVICE (GPRS) . . . . 30
3.1.5 ENHANCED DATA RATES FOR GLOBAL EVOLUTION (EDGE) . 32 3.1.6
UNIVERSAL MOBILE TELECOMMUNICATIONS SYSTEM (UMTS) 32 3.1.7 WIRELESS LAN
TECHNOLOGIES 34 3.1.8 SUMMARY 38 3.2 PROTOCOLS SUPPORTING MOBILITY 40
3.2.1 MOBILE IP 40 3.2.2 CELLULAR IP 42 3.2.3 SUMMARY 43 3.3 LOCATION
TECHNOLOGY 44 3.3.1 THE GLOBAL POSITIONING SYSTEM (GPS) . . . . 44 3.3.2
GLOBAL NAVIGATION SATELLITE SYSTEM (GLONASS) . 45 3.3.3 DIFFERENTIAL GPS
(DGPS) AND REAL-TIME KINEMATIC (RTK) GPS 46 3.3.4 WIRELESS ASSISTED GPS
(A-GPS) 46 3.3.5 CELL-ID 47 3.3.6 ENHANCED OBSERVED TIME DIFFERENCE
(E-OTD) . . 47 3.3.7 OBSERVED TIME DIFFERENCE OF ARRIVAL (OTDOA) . . 48
3.3.8 INFRARED SYSTEMS 48 3.3.9 INERTIAL NAVIGATION SYSTEMS AND DEAD
RECKONING . 49 3.3.10 VISION TRACKING 49 3.3.11 COMPARISON OF LOCATION
TECHNIQUES . . . . 50 4 A FRAMEWORK FOR RAPID PROTOCOL PROTOTYPING 53
4.1 RELATED WORK 54 4.2 APPLYING MAINSTREAM TECHNOLOGY TO PROTOCOL
IMPLEMENTATION 55 4.3 WHAT IS THE EZNET FRAMEWORK? 57 4.4 ARCHITECTURE
OF THE NATIVE LIBRARY 58 4.4.1 IMPLEMENTATION OF THE NATIVE LIBRARY . .
. 58 4.5 NETWORK PROTOCOL ABSTRACTION IN THE FRAMEWORK . . . 59 4.5.1
MAJOR BUILDING BLOCKS 59 4.5.2 CLASS PROTOCOLLAYER 61 4.5.2.1 PUBLIC
MEMBERS 61 4.5.3 CLASS PACKET 64 4.5.4 CLASS PACKETHEADER 65 4.5.4.1
PUBLIC MEMBERS 66 4.6 DESIGN OF THE TCP/IP STACK 66 4.6.1 CLASSES OF THE
TCP/IP PROTOCOL STACK . . . . 67 4.7 PROCESSING OF PROTOCOL PACKETS 68
4.8 SUPPORT FOR CREATION OF HEADER MARSHALLING AND UNMARSHALLING CODE 73
4.8.1 XML DTD FOR HEADER DEFINITIONS . . . . 73 4.8.2 GENERAL
APPLICABILITY 75 4.9 TRANSPARENT NETWORK SERVICE PROVISION 75 4.9.1
CUSTOM CLASS LOADER 77 4.9.2 GENERAL APPLICABILITY 79 4.10 DEBUGGING AND
EVENT LOG SUPPORT 79 4.10.1 OPTIMIZATIONS 81 4.10.2 OTHER LOGGING
SOLUTIONS 82 4.11 AN EXAMPLE: REALIZATION OF THE AODV PROTOCOL . . . 82
4.12 SECURITY 85 4.13 PERFORMANCE ANALYSIS 85 4.13.1 RESULTS 86 4.14
SUMMARY 90 5 LOW-BANDWIDTH GROUP VOICE COMMUNICATION 91 5.1 RELATED WORK
93 5.2 SYSTEM ARCHITECTURE 93 5.2.1 CONFERENCING SERVER 94 5.2.2
CONFERENCING CLIENT 95 5.3 QUALITY OF SERVICE 96 5.4 PROTOCOL DESIGN 98
5.5 IMPLEMENTATION 103 5.5.1 OVERVIEW 104 5.5.2 SPEECH CODEC 104 5.6
PERFORMANCE CONSIDERATIONS 106 5.7 SUMMARY 108 6 AN ARCHITECTURE FOR
LOCATION-BASED SERVICES 109 6.1 RELATED WORK 110 6.2 OVERVIEW OF
LOCATION SERVICE TYPES ILL 6.3 LOCATION SERVICE ARCHITECTURE 113 6.3.1
THE FUSION I .AYER 113 6.4 INTEGRATION OF THE GLOBAL POSITIONING SYSTEM
. . . . 115 6.5 VRMI/PROXY PROTOCOL DESIGN BASED ON LOCATION PREDICTION
117 6.5.1 BANDWIDTH REDUCTION USING DEAD RECKONING . . 117 6.5.2 OUR
APPLICATION OF DEAD RECKONING . . . . 120 6.5.3 THE DEAD RECKONING
ALGORITHM 120 6.6 QUANTITATIVE RESULTS 123 6.7 SUMMARY 124 7 THE
LOCAPHONE 127 7.1 APPLICATION OVERVIEW . . . . . . . . 128 7.2 POSSIBLE
SECURITY MEASURES 132 7.2.1 AVAILABLE SECURITY ALGORITHMS 133 7.2.2
APPLYING SECURITY TECHNOLOGY TO OUR SCENARIO . . 135 7.3 SUMMARY 136 8
CONCLUSIONS AND FUTURE WORK 139 A VERSION SIGNATURES OF THE EVALUATED
JAVA VIRTUAL MACHINES 145 B DOCUMENTATION OF THE JAVAGPS PACKAGE 147 B.I
JAVAGPS PACKAGE OVERVIEW 147 B.2 JAVAGPS CLASS OVERVIEW 149 C
DOCUMENTATION OF THE EZNET FRAMEWORK 155 C.I EZNET PACKAGE OVERVIEW 155
C.2 EZNET CLASS OVERVIEW 157 REFERENCES 165
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| spelling | Walther, Ulrich Verfasser aut Service support for virtual groups in mobile environments Ulrich Walther Aachen Shaker 2003 XIII, 175 S. Ill., graph. Darst. txt rdacontent n rdamedia nc rdacarrier Berichte aus der Informatik Zugl.: Braunschweig, Techn. Univ., Diss., 2003 Kommunikationsprotokoll (DE-588)4128252-8 gnd rswk-swf Mobile Telekommunikation (DE-588)4341131-9 gnd rswk-swf Client-Server-Konzept (DE-588)4252624-3 gnd rswk-swf Mehrplatzsystem (DE-588)4224999-5 gnd rswk-swf Funknetz (DE-588)4216130-7 gnd rswk-swf Dienstgüte (DE-588)4496068-2 gnd rswk-swf (DE-588)4113937-9 Hochschulschrift gnd-content Funknetz (DE-588)4216130-7 s Mobile Telekommunikation (DE-588)4341131-9 s Mehrplatzsystem (DE-588)4224999-5 s Client-Server-Konzept (DE-588)4252624-3 s Kommunikationsprotokoll (DE-588)4128252-8 s Dienstgüte (DE-588)4496068-2 s DE-604 GBV Datenaustausch application/pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=012882396&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA Inhaltsverzeichnis |
| spellingShingle | Walther, Ulrich Service support for virtual groups in mobile environments Kommunikationsprotokoll (DE-588)4128252-8 gnd Mobile Telekommunikation (DE-588)4341131-9 gnd Client-Server-Konzept (DE-588)4252624-3 gnd Mehrplatzsystem (DE-588)4224999-5 gnd Funknetz (DE-588)4216130-7 gnd Dienstgüte (DE-588)4496068-2 gnd |
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| title | Service support for virtual groups in mobile environments |
| title_auth | Service support for virtual groups in mobile environments |
| title_exact_search | Service support for virtual groups in mobile environments |
| title_full | Service support for virtual groups in mobile environments Ulrich Walther |
| title_fullStr | Service support for virtual groups in mobile environments Ulrich Walther |
| title_full_unstemmed | Service support for virtual groups in mobile environments Ulrich Walther |
| title_short | Service support for virtual groups in mobile environments |
| title_sort | service support for virtual groups in mobile environments |
| topic | Kommunikationsprotokoll (DE-588)4128252-8 gnd Mobile Telekommunikation (DE-588)4341131-9 gnd Client-Server-Konzept (DE-588)4252624-3 gnd Mehrplatzsystem (DE-588)4224999-5 gnd Funknetz (DE-588)4216130-7 gnd Dienstgüte (DE-588)4496068-2 gnd |
| topic_facet | Kommunikationsprotokoll Mobile Telekommunikation Client-Server-Konzept Mehrplatzsystem Funknetz Dienstgüte Hochschulschrift |
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