We will discuss Access Network(AN) and Radio Access Network user and control plane protocol in 5G NR. This page covers 5G Protocol Stack i.e. So, if you know lte, then it will be easy for you to understand. The main services and functions of the RRC sub layer include: The layer 2 of NR is split into the following sub layers: The two figures below depict the Layer 2 architecture for downlink and uplink, where: Figure #3 Downlink Layer 2 Structure                                                    Figure #4 Uplink Layer 2 Structure. Packet Data Convergence Protocol (PDCP) is specified by 3GPP in TS 25.323 for UMTS, TS 36.323 for LTE and TS 38.323 for 5G New Radio (NR). • UE measurement reporting, control of UE reporting, UE based mobility •  Timer-based SDU discard in uplink, Following are the functions of 5G layer 2 i.e. ➤UPB, ©RF Wireless World 2012, RF & Wireless Vendors and Resources, Free HTML5 Templates. 1.72. • Security including key management SDAP applies also to LTE when connected to the 5G Core. As whown 5G protocol stack consists of OWA layer, network layer, Open transport layer and application layer. •  Transmit Diversity (TX diversity) 5G millimeter wave tutorial The 5G layer-2 include MAC, RLC and PDCP.The 5G layer-3 is RRC layer as shown in 5G protocol stack. • TS V5G.201 5G testing and test equipments •  Padding, Following are the functions of 5G layer 2 i.e. LTE UE Power-on Questions Part 1; LTE UE Power-on Questions Part 2; LTE Attach Procedure Questions; LTE Detach Procedure Questions; LTE Handovers Related Questions ; More. 5G NR MAC layer 3. The interface between the waveform and the antenna array is standardized through a series of “antenna ports.” Refer 5G NR RLC layer overview >> for more information on 5G NR RLC modes (TM mode, UM mode, AM mode), data structures (TMD, UMD, AMD), RLC PDUs (TMD PDU, UMD PDU, AMD PDU), UE measurement reporting and control of the reporting; Detection of and recovery from radio link failure; NAS message transfer to/from NAS from/to UE. •  RF processing. It is designed in ANSI C for flexibility and scalability and is easy to customize and upgrade. •  Concatenation of multiple MAC SDUs belonging to one logical channel into transport block (TB) Numerology 8.1 Importance of numerology in 5G NR . Author 5G. This page covers 5G Protocol Stack i.e. PDCP (Packet Data Convergence Protocol) Layer Functions: The main services and functions of the PDCP sublayer for the user plane include: The main services and functions of the PDCP sublayer for the control plane include: RLC (Radio Link Control ) Layer Functions: The main services and functions of the RLC sublayer depend on the transmission mode and include: Note:  no concatenation and no reordering, MAC (Media Access Control) Layer Functions. Currently, the OAI platform includes a full software implementation of the 3GPP 4G-LTE and 5G-NR protocol stack for: the RAN (OpenAirInterface5G) for 4G and 5G the EPC (OpenAirCN) for 4G. ➤WHDI    In the control plane, control-relevant information is exchanged between the network and the user equipment. The figure clearly explains the user plane and control plane protocols. • Establishment, configuration, maintenance and release of point-point radio bearers. The Release Notes are available there •  Frequency and time synchronisation Protocol Stack of 5G NR 5.1 Protocol Stack Enhancements Exercise: Protocol Stack. 5G NR MAC procedures and format of 5G NR MAC header and subheaders. SDAP is the only new layer introduced in 5G. •  Rate matching of the coded transport channel to physical channels 6. Security functions including key management; Establishment, configuration, maintenance, and release of Signalling Radio Bearers (SRBs) and Data Radio Bearers (DRBs); Mobility functions including Handover and context transfer; UE cell selection and reselection and control of cell selection and reselection; Inter-RAT mobility. •  FEC encoding/decoding of the transport channel The establishment and management of sessions occurs at the highest layer on the control plane called non-access stratum (NAS). How is it possible? data transfers (TM, UM and AM) and RRC parameters which defines RLC layer. 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