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Horizons in computer science research. Volume 6 /
| Clasificación: | Libro Electrónico |
|---|---|
| Otros Autores: | |
| Formato: | Electrónico eBook |
| Idioma: | Inglés |
| Publicado: |
New York :
Nova Science Publishers, Inc.,
©2012.
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| Colección: | Horizons in computer science.
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| Temas: | |
| Acceso en línea: | Texto completo |
Tabla de Contenidos:
- HORIZONS IN COMPUTER SCIENCE RESEARCH VOLUME 6 ; HORIZONS IN COMPUTER SCIENCE RESEARCH VOLUME 6 ; CONTENTS ; PREFACE; ONLINE IMPAIRMENT AWARE ROUTING AND WAVELENGTH ASSIGNMENT IN WDM OPTICAL NETWORKS ; ABSTRACT ; 1. INTRODUCTION ; 2. PREVIOUS WORK ; 3. PHYSICAL IMPAIRMENTS AND QUALITY OF TRANSMISSION ; 3.1. Quality of Transmission, BER and Q-factor ; 3.2. Direct and Indirect IA-RWA Algorithms ; 3.3. Estimating the Feasibility of a Lightpath ; Q-factor of a path and Q-factor of a link; 4. MULTICOST ONLINE IA-RWA ALGORITHMS.
- 4.1. Sigma-Cost (SC) Direct IA-RWA Algorithm for Transparent Networks 4.1.1. Computing the cost vector of a transparent path ; 4.1.2. Estimating the feasibility of available lightpaths ; 4.1.3. Algorithm Description ; Phase 1: Computing the set of non-dominated paths Pn-d ; Phase 2: Selecting the optimal lightpath ; i) Most Used Wavelength (MUW) ; ii) Better Q performance (bQ) ; iii) Mixed better Q and wavelength utilization (bQ-MUW); Phase 3: Evaluate the effect on the established connections ; Phase 4: Q-Tool estimator (optional); 4.1.4. Algorithms Complexity ; 4.1.5. QoS differentiation.
- 4.2. Sigma-Cost (SC) Direct IA-RWA Algorithm for Translucent Networks4.2.1. Computing the Cost Vector of a Translucent Path (a Path with Regeneration at Intermediate Nodes) ; 4.2.2. Algorithm's Description ; Phase 1: Computing the set of non-dominated paths Pn-d ; Phase 2: Choosing the optimal lightpath from the set Pn-d of non-dominated lightpaths ; i) Most Used Wavelength (MUW) policy ; ii) Best Q performance (bQ) policy ; iii) Better Q and wavelength utilization (bQ-MUW) ; iv) Least Regenerators Usage and Most Used Wavelengths (LRU-MUW)
- V) Fewer Regenerators Usage and Most Used Wavelengths (FRU-MUW) vi) Least Regenerators Usage and best Q (LRU-bQ) ; vii) Fewer Regenerators Usage and best Q (FRU-bQ) ; viii) Least Regenerators Usage and better Q and Most Used Wavelengths (LRU-bQ-MUW) ; ix) Fewer Regenerators Usage better Q and Most Used Wavelengths (FRU-bQ-MUW); Phases 3 and 4 ; 5. PERFORMANCE RESULTS ; 5.1. Transparent network experiments ; 5.1.1. Random Networks Experiments ; 5.2. Translucent Networks Experiments ; CONCLUSIONS ; REFERENCES ; APPENDIX A
- COMPUTING LINK NOISE VARIANCE PARAMETERS.
- APPENDIX B
- COMPUTING THE SET OF NON-DOMINATED PATHS FROM THE GIVEN SOURCE TO THE DESTINATIONOPTICAL PERFORMANCE MONITORING IN FUTURE OPTICAL NETWORKS; ABSTRACT ; 1. INTRODUCTION ; 2. OPTICAL PERFORMANCE MONITORING ; 3. OPM IN OPS NETWORKS ; 3.1. Basis of monitoring techniques proposed in this chapter ; 3.2. Proposed optical performance monitoring techniques for OPS networks ; 3.2.1. PMD monitoring using XOR gates ; Principle of operation ; Experimental validation ; 3.2.2. All-optical TTL decrementing using XOR gates ; Description of the system ; Results and Discussion.