Unlike in the Look-Aside architecture, this frees up valuable CPU resources enabling higher performance for L2 and 元 application processing. The RAN SmartNIC enables offloading all or part of the L1 processing from the general-purpose Central Processing Unit (CPUs). SmartNICs are commonly used today as accelerators in server and cloud infrastructure environments, including those of global webscalers. In the In-Line architecture option, this is done with the help of a RAN SmartNIC (Network Interface Card). Therefore, specialized hardware accelerators are required for L1 processing in Cloud RAN vDUs.
In RAN, the vDU L1 processing is highly complex with sophisticated algorithms that require specialized computing beyond the capabilities of GPPs used in COTS hardware, in order to cope with the extreme computing capacity needs of L1 and very tight latency requirements in end-to-end mobile networks. In Cloud RAN, both are virtualized and called the virtualized Distributed Unit (vDU) and the virtualized Centralized Unit (vCU). As concluded in our newly released whitepaper, the overall benefits of In-Line acceleration outweigh those of Look-Aside for any commercial Cloud RAN deployment aiming for highest performance, lowest Total Cost of Ownership (TCO), and greatest flexibility.īest performance with an In-Line acceleratorģGPP has functionally split the baseband unit into the real-time DU and the non-real time CU. The two primary options for implementing Cloud RAN acceleration are the so-called “Look-Aside” and “In-Line” architectures. Hardware acceleration technology is a critical element in Cloud RAN performance. At the heart of the servers are General-Purpose Processors (GPP) and hardware accelerators. The functions and software run on Commercial-Off-the-Shelf (COTS) server hardware. To do so, the virtual Distributed Unit (vDU) and Centralized Unit (vCU) baseband functions run as containers on a Container-as-a-Service (CaaS) software layer.
This of course follows my previous blog.Ĭloud RAN utilizes the vertical disaggregation of the Radio Access Networks (RAN) baseband software from baseband processing hardware. As we look forward to MWC 2023 in Barcelona, it’s timely to update you all how Nokia and its partners are continuing to build on our strong collaboration to deliver best-in-class Cloud RAN.
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