LTE Q & A (14/11/2020)

1.    How many S1AP ID is created in initial attach procedure of LTE? A.   OneB.   TwoC.   ThreeD.   Depends on resource availability2.    Volte Su...

September 30, 2021

LTE Q & A (13/11/2020)

Until the UE is paged and bearers are setup which node is responsible to buffer the packets for the mean time in LTE?A. PGWB. PCRFC. SGWD. Visited PCRFWhere is ...

September 30, 2021

LTE Q & A (01/11/2020)

1.Is it possible to trigger re-establishment procedure without RACH procedure?A.YESB.NO2. In which channel we get the DCI InfoA. PDSCHB. DLSCHC. PDCCHD. PBCH3. ...

September 30, 2021

LTE Q & A (21/10/2020)

1.Components of TAITAC,MNCTAC,MCCMNC,TAC,MCCTAC,MNCAns. MNC,TAC,MCC2. ERAB Consist ofS1 and S5/S8 BearerRadio and S5/S8 BearerRadio and S1 BearerS1, Radio and S...

September 30, 2021

5G-NR Q&A (20/10/2020)

1. In 5G-NR Extended Cyclic Prefix (CP) is supported in which subcarrier spacing15 kHz60 kHz120 kHz240 kHzAns. 60 kHz2. In 5G-NR when we are using numerolo...

September 30, 2021

5G-NR Q&A (15/10/2020)

1.In 5G, UE in RRC IDLE cannot move to RRC INACTIVEFALSETRUEAns. TRUE2. 5G-S-TMSI is allocated bySMFAMFUPFAUSFAns. AMF3. What does CSI consi...

September 30, 2021

LTE Q & A (15/10/2020)

1.S-TMSI is Combination ofMME Code & M-TMSIMME Groupid & M-TMSIMME Groupid & MME CodeNone of the aboveAns. MME Code & M-TMSI2.What is the Range of SFN in LTE?64...

September 30, 2021

What is CPRI & eCPRI ?

While the CU/DU split adds a lot of extra flexibility in how services are deployed, there is still an area of cost that needs to be optimized is the RU. Today, ...

September 30, 2021

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

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 ...

September 30, 2021

Types of Functional Splits in ORAN/5G NR

Types of Splits:We have three categories of splitsHigh Layer SplitsLow Layer SplitsDouble SplitsHigh Layer Split: It consist of split 2,3,4 & 5.The benefit...

September 30, 2021

Function Splits in ORAN/5G-NR:

Function Splits in ORAN/5G NR:Centralized baseband processing was introduced several years ago to ease installation of base stations in large buildings. Digital...

September 30, 2021

RU/DU/CU Architecture

Radio Unit Interface & Architecture :5G NR radio unit shall be connected to DU through fronthaul RAN low layer split. The DU shall be connected to the CU which ...

September 30, 2021

High Level Architecture of ORAN

As per WG1 ORAN alliance spec, figure shown below, the radio side includes Near-RT RIC, O-CU-CP, 17 O-CU-UP, O-DU, and O-RU functions. The E2 interface connects...

September 30, 2021

O-RAN:Challenges in ORAN & Function Migration of 4G to 5G RAN Architecture

Challenges in ORAN/ORAN Deployment.With the move towards Open RANs, operators and integrators need to test that all the Technology works together before it goes...

September 30, 2021

ORAN -Why,What,When?

Now question here comes in mind Why,What , When ORAN.Why ORAN:Most of the CAPEX required to build a wireless network is related to the RAN segment, reaching as ...

September 30, 2021

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