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SK Telecom's RAN Evolution Strategy
October 09, 2014 | By Netmanias (tech@netmanias.com)
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1. © 2014 Netmanias • www.netmanias.com SK Telecom’s RAN Evolution Strategy October 09, 2014NETMANIAS ONE-SHOT PAST CURRENT CO DU Ethernet Backhaul l Centralized & Cloud RAN (C-RAN) – 2012l Legacy Distributed RAN l Unified RAN – 2014 (introduced Small RRH at small cell) Macro Cell RU Centralized BBU + Macro RRH + Small RRH + Coordination server (CoMP Scheduler, etc.) Fronthaul (Cloud Belt) BBU BBU Ethernet Backhaul Macro RRH Centralized BBU + Macro RRH + Coordination server (CoMP Scheduler, etc.) Fronthaul (Cloud Belt) Ethernet Backhaul CPRI Macro RRH Small RRH CPRI Standalone Base Station (DU (BBU) and RU in one box) Small RRH ... ... CO (RAN) CO (RAN) CPRI l Service-aware RAN (e.g. Video caching at RAN) l Virtualized RAN (vRAN) NEAR FUTURE LONG TERM BBU BBU Coordination server Fronthaul (Cloud Belt) Macro RRH Small RRH CPRI Small RRH ... CO (vRAN) RAN Cache CO (RAN) vRAN (BBU Virtualization) GPP Hypervisor 3G LTE LTE-A ㆍConnectivity SW ㆍIntelligent service Video streaming RRM Sche- duler SON Agent Apps BBU BBU BBU SAE-GW SAE-GW Move to RAN Service at RAN Service at Core RAN (eNB) RAN (eNB) BBUsRRHs (Macro & Small)BBUsRRHs (Macro) DU GPP server
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