Find Your Focus What is RIC(Ran Intelligent Controller)? Near-RT RIC(O-RAN Near-Real-Time RAN Intelligent Controller: A logical function that enables near-real-time control and optimization of RAN elements and resources via fine-grained data collection and actions over E2 interface.) Non-RT RIC(O-RAN Non-Real-Time RAN Intelligent Controller: A logical function within SMO that drives the content carried across the…
Find Your Focus ControlResourceSet What is Coreset? How CORESET work in 5G A control resource set (CORESET) is defined as a set of REGs under given numerology (i.e., subcarrier spacing) , Particularly, in the frequency domain, a CORESET is a set of contiguous or distributed physical resource blocks (PRBs) configured using a 6-PRB granularity, within…
NR & LTE implements PDCP in both the User Plane and Control Plane. This is unlike UMTS, where PDCP was only found in the User Plane. The main reason for the difference is that PDCP in NR & LTE takes on the role of security, i.e. encryption and integrity.
Find Your Focus Dynamic Spectrum Sharing (DSS) allows operating LTE and NR networks in the same frequency bands. Dynamic Spectrum Sharing (DSS) is useful to allow operators to perform a soft refarming of the LTE spectrum towards NR. For Dynamic Spectrum Sharing support between LTE and NR in TDD bands. Some operators do not possess…
With the rapid development of mobile Internet and Internet of Things(IoT), Telecom services have been increasingly multifarious. The three main usage scenarios for 5G, namely1. enhanced Mobile Broadband(eMBB) 2. massive Machine Type of Communication(mMTC) 3. ultra-Reliable Low Latency Communication(uRLLC), However, in terms of performance, the current 4G system cannot meet the requirements of high peak…
Date Rate Throughput defined in 3GPP 38.306(4.1.2) The DL and UL max data rate supported by the UE is calculated by band or band combinations supported by the UE. AUE supporting NR (NR SA, MR-DC) shall support the calculated DL and UL max data rate defined. In NR Data rate calculated based on the resource…
Frame Structure 5G-NR In NR, similar to LTE, a radio frame is fixed to be 10 ms, which consists of 10 subframes each of 1ms. However, different from LTE which has a fixed subcarrier spacing (SCS) for 15 kHz, NR supports scalable numerology for more flexible deployments covering a wide range of services and carrier…
Master Information Block Direction: gnB=> UE Signalling Radio Bearer: N/A RLC-SAP: TM Logical Channel: BCCH Transport Channel: BCH The MASTER INFORMATION BLOCK (MIB) includes a limited number of most essential and most frequently transmitted parameters that are needed to acquire other information from the cell. The MIB is transmitted on BCH while all other SYSTEM INFORMATION messages are transmitted on DL-SCH The MIB is always transmitted on the BCH…
In the current NR specifications [2], [3], Discrete Fourier transform-spread orthogonal frequency-division multiplexing (DFT-s-OFDM) [14] is used for the uplink transmission, especially in coverage limited scenarios. This waveform is also referred to as single-carrier FDM waveform (SCFDM) in the literature. In 3GPP 5G NR, QAM modulation symbols with modulation order (4, 16, 64, 256) can…
Signaling Radio Bearers (SRBs) are defined as Radio Bearers (RBs) that are used only for the transmission of RRC and NAS messages. More specifically, the following SRBs are defined: SRB0 is for RRC messages using the CCCH logical channel. SRB1 is for RRC messages (which may include a piggybacked NAS message) as well as for…