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• LTE Q & A (21/10/2020)

  By techlteworld on October 21, 2020 • ( 2 )

  

  1.Components of TAI TAC,MNC TAC,MCC MNC,TAC,MCC TAC,MNC 2. ERAB Consist of S1 and S5/S8 Bearer Radio and S5/S8 Bearer Radio and S1 Bearer S1, Radio and S5/S8 Bearer 3. Default bearer uses Non-GBR GBR Both 4. Which one is not… Read More ›

• 5G-NR Q&A (20/10/2020)

  By techlteworld on October 20, 2020 • ( 0 )

  

  1. In 5G-NR Extended Cyclic Prefix (CP) is supported in which subcarrier spacing 15 kHz 60 kHz 120 kHz 240 kHz 2. In 5G-NR when we are using numerology-2 what would be the Slot length? 0.25 ms 0.5 ms 0.125… Read More ›

• Functional split Option 7 & ORAN Alliance Specified Split option 7.2x

  By techlteworld on October 17, 2020 • ( 0 )

  

  In this option as shown in Fig below the lower physical layer functions and RF circuits are located in the DU(s). The upper protocol layers including the upper physical layer functions reside in the CU. There are multiple realizations of… Read More ›

• 5G-NR Q&A (15/10/2020)

  By techlteworld on October 15, 2020 • ( 0 )

  

  1.In 5G, UE in RRC IDLE cannot move to RRC INACTIVE FALSE TRUE Ans. TRUE 2. 5G-S-TMSI is allocated by SMF AMF UPF AUSF Ans. AMF 3. What does CSI consist of in 5G-NR CQI,RI,PMI LI,CRI SSBRI,CQI,RI,PMI,LI,CRI CQI,LI,RI,PMI Ans. SSBRI,CQI,RI,PMI,LI,CRI… Read More ›

• LTE Q & A (15/10/2020)

  By techlteworld on October 15, 2020 • ( 0 )

  

  1.S-TMSI is Combination of MME Code & M-TMSI MME Groupid & M-TMSI MME Groupid & MME Code None of the above Ans. 2.What is the Range of SFN in LTE? 64 128 512 1024 Ans. 3.RRC Connection Reconfiguration uses which… Read More ›

• LTE Subcarriers, modulation and Frame structure

  By techlteworld on October 15, 2020 • ( 0 )

  

  LTE Subcarriers, modulation and Frame structure LTE subcarrier is the smallest independent part of an LTE signal. The smallest defined piece of an LTE signal is a single subcarrier is RE (Resource Element). Modulation scheme used in LTE. QPSK 16QAM… Read More ›

• Types of Functional Splits in ORAN/5G NR

  By techlteworld on October 14, 2020 • ( 0 )

  

  Types of Splits: We have three categories of splits High Layer Splits Low Layer Splits Double Splits High Layer Split: It consist of split 2,3,4 & 5.The benefits of opting this functional splits are drastically reduced bandwidth, latency tolerant i.e… Read More ›

• Function Splits in ORAN/5G-NR:

  By techlteworld on October 13, 2020 • ( 0 )

  

  Function Splits in ORAN/5G NR: Centralized baseband processing was introduced several years ago to ease installation of base stations in large buildings. Digital radio interfaces and remote radio heads (RRHs) both was enabled by it, which allowed the connection between… Read More ›

• 5G-NR RACH (Random Access Procedure)

  By techlteworld on October 11, 2020 • ( 0 )

  

  5G-NR RACH (Random Access Procedure) Random Access Procedure RA Procedure is of two different types. Contention based RA Procedure Contention Free RA Procedure Contention based RA Procedure In CBRA, the UE randomly selects an RA preamble from a pool of… Read More ›

• 5G NR-(MIB/SIB)

  By techlteworld on October 10, 2020 • ( 0 )

  

  5G NR-(MIB/SIB) System information System Information (SI) is consisting of 2 parts- MIB (Master Information Block) SIBs (System Information Block) In NR there are two version of SIBs . One being transmitted periodically same as LTE Other one is transmitted… Read More ›