5G
What is the SRS Transmission Comb type? * An SRS Transmission can occupy up to 272 RBs in the frequency domain, but an individual UE does not transmit the SRS on every subcarrier but selects specific subcarriers based on transmission comb type. * 5G supports two types of transmission Comb(2 &
5G
Introduction: In general, power design in NR is simpler than in 4G. In NR, a cell's power is shared across multiple channels, and the allocation of power to each channel plays a crucial role in determining the cell's coverage performance. This article discusses the key aspects
5G
Introduction This article will cover the following topics: * NR Slot Format – Introduction * 4G Vs 5G TDD Subframe/Slot format: * NR Slot Format Types Deep dive: Fixed, Semi-Static & Dynamic TDD * Cross Link Interference definition and relation with NR Slot Allocation * 4G/NR coexistence * NR Slot Format Planning and design impact
5G
4G/5G – DL/UL Inter-Cell Interference Randomization Brief Description and expected benefits: * When the Cell Load is low; the g-NB.(Scheduler) staggers the resources allocated to adjacent cells as far away from each other as possible in multi-cell networking scenarios. * Usually the resources allocation will be staggered based on the
5G
Introduction: * UE battery life is an important aspect of the user's experience, which will influence the adoption of 5G NR handsets and/or services. It is critical to study UE power consumption to ensure that UE power efficiency for 5G NR UEs can be better than that of
5G
Learn about 5G DMRS for PBCH (1) What is the primary function of DMRS for PBCH? * The UE uses DMRS to estimate the propagation channel experience by the PBCH. The resultant information is used to demodulate the PBCH and subsequently decode the Master Information Block. (2) How and where is
5G
What are 4G S-TMSI and 5G S-TMSI? * 4G S-TMSI, and is part of GUTI, it is used to identify a UE within a specific MME Pool. * 5G S-TMSI can be used to identify a UE within a specific AMF Region. How can you trace and check them? * In 4G: It
5G
💡 What is it? PDSCH Multiplexing simply means leveraging the free resources within the PDSCH DMRS Symbol for optimal PDSCH utilization. 📈Expected Gain: Experience an increase in the maximum user throughput for users in good radio conditions. 🚫 Expected Drawbacks: There's always a tradeoff. Be mindful of the impact on
5G
The Channel State information (CSI) Reference Signal is a multi-purpose DL Transmission. The Base Station can configure the UE to use the CSI-RS for one or more of the following: 1- CSI Reporting As seen in the below figure, the g-NB initially will send the related configuration and transmit CSI
5G
* The 4G/5G Globally Unique Temporary Identifier (GUTI) is a temporary identity used by the network to enhance privacy. The MME assigns it in 4G or AMF in 5G, and the allocated GUTI can be changed at any time by MME/AMF. * 4G GUTI has three components. Where: * PLMN identity
5G
5G CSI-RS has 3 Types: 1- Non-Zero Power CS RS is used for two main purposes - For Channel Measurement CSI reporting, Beam Management, RLF, Beam Recovery, and Mobility. - For Interference Measurement, “Intra-Cell Interference” is mainly used to measure intra-Cell interference generated by Users during Multi-User MIMO 2- CSI
5G
What are the common 5G NSA Mobility Common Handover failures Root-Causes? (1) Missing X2 Definition/Missing Neighbors * Unlike legacy 4G handover scenarios, where missing neighbors may cause quality issues or call drops but not affect the handover KPIs as the handover attempt will not be initiated at the first place