Open Radio Access Network (O-RAN) Systems Architecture and Design
by Wim Rouwet
- Length: 402 pages
- Edition: 1
- Language: English
- Publisher: Academic Press
- Publication Date: 2022-03-15
- ISBN-10: 0323919235
- ISBN-13: 9780323919234
- Sales Rank: #1059089 (See Top 100 Books)
Open Radio Access Network (O-RAN) Systems Architecture and Design gives a jump-start to engineers developing O-RAN hardware and software systems, providing a top-down approach to O-RAN systems design. It gives an introduction into why wireless systems look the way they do today before introducing relevant O-RAN and 3GPP standards. The remainder of the book discusses hardware and software aspects of O-RAN system design, including dimensioning and performance targets.
Cover image Title page Table of Contents Copyright About the authors Preface Acronyms 1. Open radio access network overview Abstract The Open Radio Access Networks Alliance On C-RAN, Open vRAN, OpenRAN, xRAN, and Telecommunications Infrastructure Project Spectrum: enabling 5G Traditional base station architectures 5G base station architectures Functional splits Coordinated Multipoint A real-life example: enterprise 5G networking Summary and conclusions References Further reading 2. System components, requirements, and interfaces Abstract Next-Generation Radio Access Network overview and terminology Central unit Distributed unit Radio unit Distributed unit/radio unit interface, Enhanced Common Public Radio Interface protocol overview Initial access 802.1CM Fronthaul gateway Cell site router/gateway Form factor, environmental and power requirements ASN.1 DiffServ References 3. Hardware system dimensioning Abstract Centralized/distributed unit use-case dimensioning for throughput Use-case dimensioning for latency Users/transmission time interval eCPRI, fronthaul bandwidth and latency Distributed unit internal IO Memory dimensioning HARQ process count dimensioning Radio unit References Further reading 4. Hardware architecture choices Abstract Scalability Development cycle Data center architecture Cell site integrated (CU/DU) solutions Radio unit Integrated small cell Multicore central processing unit selection criteria PCIe performance References 5. System software Abstract Operating system Networking stacks Functional application platform interface Security aspects References Further reading 6. User-plane application components Abstract GTP Protocol PDCP protocol RLC Protocol MAC protocol eCPRI protocol overview Low physical layer Digital front-end References Further reading 7. Wireless scheduling and Quality of Service optimization techniques Abstract Orthogonal frequency division multiple access Base station scheduler algorithms Architectural framework for the base station wireless scheduler algorithm System-level optimization Software optimization techniques References Further reading 8. Synchronization in open radio access networks Abstract Understanding frequency, time, syntonization, and synchronization How do we get time? O-RAN synchronization Cellular network synchronization requirements Synchronization in O-RAN O-RAN network-level synchronization O-RAN sync equipment requirements Sync solution implementation The effects of timestamping location and resolution Unraveling the standards spaghetti Further reading 9. Software performance Abstract Packet processing cycle budget analysis Physical Layer complexity analysis Central Processing Unit loading summary System-on-Chip performance counters Life-of-a-packet double data rate utilization analysis Mitigation techniques: what if the product does not meet performance targets? Development environment optimization Software optimization techniques Reference 10. Interoperability and test Abstract Development testing System test setup Performance testing Front-, mid-, and backhaul testing Operator acceptance testing Regulatory approval testing References 11. Differentiation by use case Abstract Ultra-reliable low-latency communication Vehicle-to-infrastructure (vehicle-to-anything) roadside unit architecture and implementation 5G Reduced Capabilities (RedCap) References Further reading Index
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