Abstract
This chapter discusses one of the key design principles for 5G systems: “No More Cells” (NMC) [1]. NMC transfers the traditional cell-centric network design to a user-centric design principle. It is pointed out that NMC realization could be facilitated by the Cloud RAN (C-RAN) architecture which pools the processing resources and virtualizes “soft” BBUs and various applications on demand. The major challenges for C-RAN, including the transport networks to connect the resource pool and the remote sites as well as virtualization with potential solutions, are analyzed in detail. Various fronthaul solutions, including Common Public Radio Interface (CPRI) compression, single-fiber bi-direction, as well as wavelength division multiplexing (WDM) technology, are demonstrated and verified through our extensive field trials. In addition, the feasibility of general purpose processor (GPP) platform adoption in baseband processing with optimized virtualization implementation is functionally demonstrated and initially verified in terms of interruption time through prototype development implemented with a commercial LTE protocol stack.
Keywords
- User Equipment
- Wavelength Division Multiplex
- Resource Cloudification
- General Purpose Processor
- Network Function Virtualization
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
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Acknowledgments
We would like to express our sincere gratitude to all of our partners, including Alcatel-Lucent, Intel, and Wind River for the development of the GPP-based C-RAN prototype. We would also like to thank all C-RAN and 5G team members in China Mobile for their helpful discussion and valuable comments.
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I, CL., Huang, J., Duan, R., Li, G., Cui, C. (2017). Rethink Ring and Young: Green and Soft RAN for 5G. In: Tornatore, M., Chang, GK., Ellinas, G. (eds) Fiber-Wireless Convergence in Next-Generation Communication Networks. Optical Networks. Springer, Cham. https://doi.org/10.1007/978-3-319-42822-2_11
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DOI: https://doi.org/10.1007/978-3-319-42822-2_11
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