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5G L2 SW Architecture Best Practice on Intel® Architecture

Last Updated: Jan 18, 2019

5G is the next technological revolution. Transformed 5G networks are designed to support a broad range of devices and use cases, with faster speeds, less latency, and more capacity. However, 5G is confronted with many challenges, first of which is TTI (Transmission Time Interval) decreasing from 1ms to 0.125ms while data rate boosting by 10 folds. This demands sharply improved processing capacity of base station, and rigorous real-time performance of software stack. In this context, the architecture design of L2 packet processing, and its implementation and optimization on x86 server platform are vital to fulfilling the 5G throughput and real-time performance target.
Huge throughput demand of 5G brings a great challenge to optimizing locking/ unlocking overhead, and translation lookaside buffer (TLB) miss when multiple tasks/threads get, split or release memory. For MAC/RLC packet processing, Intel adopts DPDK Mempool to buffer management, where the memory is mapped into hugepage. The IA-friendly BBUpooling is also adopted as the framework of FlexRAN L2+ reference library. In this regard, Intel® FlexRAN reference architecture is a solution Intel has offered for the base station.

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Network Technologies - 5G Network Technologies - vRAN Network Technologies - Network Edge Categories - Software Platforms Intel Technologies and Platforms - 1st generation Intel Xeon D Processor family Intel Technologies and Platforms - 2nd Generation Intel Xeon Scalable Processor2 Intel Technologies and Platforms - Intel FlexRAN Network Location - Radio Access Network (RAN) Network Location - Data Center Verticals/Industries - Telecommunications Verticals/Industries - Enterprise Optimizations - DPDK