Most viewed questions under tag mac

+3 votes

1 answer

LTE: Does the eNodeB inform UE to use a specific MCS for the allocated resource in PUSCH ?

posted Oct 13, 2016 by Harshita

+1 vote

1 answer

LTE: What are the functions performed by MAC layer in LTE ?

posted Oct 1, 2016 by Ganesh

+1 vote

1 answer

LTE: What is the use of PHR in LTE MAC ?

posted Nov 27, 2016 by Ganesh Kumar

+2 votes

1 answer

Accessing serial port output of guest OS in VirtualBox in Mac

posted Jul 28, 2013 by Natarajan Venkatraman

+1 vote

1 answer

Can UE request on-demand SIB while in RRC connected state ?

posted May 29, 2018 by Jaganathan

+6 votes

1 answer

LTE: What exactly ENB does after getting SRS from any UE ?

posted Dec 5, 2013 by Shekhar P

+1 vote

2 answers

why QPSK modulation scheme is used for all control channels in LTE ?

posted May 27, 2017 by anonymous

+2 votes

1 answer

Why PDCP duplication is activated from MAC in NR?

posted Jan 25, 2018 by Rohit Verma

+1 vote

2 answers

LTE: Does the eNodeB schedule data for an UE in a particular sub frame allocated for the MBMS data transmission ?

posted Oct 22, 2016 by Rupam

+1 vote

2 answers

How Many times RACH will be re-triggered if RACH fails in UE?

posted Jul 18, 2018 by Rohit Verma

+2 votes

0 answers

What is Activation/Deactivation of PDCP duplication MAC CE?

posted Aug 4, 2017 by Jaganathan

0 votes

1 answer

What is maxHARQ-msg3Tx IE in RACH config ?

posted May 15, 2017 by Gnanendra Reddy

+1 vote

3 answers

Screenshot Taking program in Python for Mac OS X.

posted Oct 19, 2013 by Seema Siddique

+1 vote

1 answer

What is ACK/NACK bundling in LTE?

posted Feb 14, 2018 by Ankit Mishra

0 votes

1 answer

What is the use of DRXi inactivity timer and DRX retransmission timer?

posted Apr 19, 2017 by Charan Shah

0 votes

1 answer

what is DwPTS and UpPTS in TDD? Why is the name so?what is carried in them? Why there are 2 switch points 5ms and 10ms?

posted Oct 14, 2016 by Sneha Maganahalli

+1 vote

2 answers

What is the UE behavior if SR Rach is fails?

posted May 4, 2020 by Sakshi Rai

+1 vote

1 answer

How UE applies UL power in NR?

posted Jun 11, 2018 by Jaganathan

+1 vote

2 answers

What is MAC configuration?When RRC will configure MAC ,Is it for every UE ?

posted Sep 4, 2017 by Himani

+2 votes

1 answer

What is ZP-CSI-RS in NR?

posted Jul 9, 2018 by Dheerendra

0 votes

1 answer

What is the use of long truncated BSR in NR?

posted Jan 30, 2018 by Ankit Mishra

+1 vote

1 answer

LTE: What things are considered when defining logical channel groups for established logical channel ids ?

posted Sep 25, 2016 by Vikram Singh

+2 votes

1 answer

About logical channel prioritization and scheduler in MAC of UE..

posted Sep 16, 2016 by Sneha Maganahalli

+2 votes

2 answers

LTE: What does impacts at eNodeB MAC scheduler , if an UE has GBR bearer as default bearer ?

posted May 8, 2014 by Vimal Kumar Mishra

+3 votes

1 answer

How harq feedback is considred by eNB in measurement-gap?

posted Dec 6, 2016 by Sneha Maganahalli

+2 votes

2 answers

LTE : How many types of MAC schedulers are defined and how these schedulers are differ to each other ?

posted Apr 9, 2016 by Harshita

+3 votes

0 answers

What is the difference between MAC reset and RRC_IDLE in LTE?

posted Jul 2, 2015 by anonymous

+1 vote

2 answers

Does SI request RACH happens using contention free or contention based in NR?

posted Mar 7, 2018 by Jaganathan

+1 vote

1 answer

Is it possible to send NACK in PHICH and new DCI with NDI toggled?

posted Mar 11, 2019 by Jaganathan

0 votes

1 answer

What if eNB sends grants on SPS RNTI after UE sends MAC CRNTI CE in MSG3?

posted Aug 14, 2020 by Jaganathan

+2 votes

1 answer

5G:MAC is doing priority handling between UE's and logical channel then why do we need SDAP?

posted Nov 22, 2017 by Jaganathan

0 votes

2 answers

Why do we need NDI bit in HARQ process?However we have ACK/NACK mechanism then why do we need to NDI?

posted Aug 21, 2017 by Himani

0 votes

0 answers

Recommended Bit rate in LTE MAC header

posted Jan 15, 2019 by Pdk

+2 votes

1 answer

How the back off indicator indicates the time delay between PRACH and next PRACH ?

posted Mar 19, 2014 by Mridul

+1 vote

3 answers

Can ENB receive data during UE's DRX off duration?

posted Apr 24, 2019 by Ankit Mishra

+7 votes

1 answer

LTE: How Beam forming works when it is needed and possible variations if possible ?

posted Oct 29, 2013 by Vikram Singh

+5 votes

1 answer

Why does lte support only 64 preamble sequences ?

posted Nov 5, 2014 by Neeraj Mishra

+1 vote

2 answers

LTE: On what basis either dB or dBm is considered as a measurement unit ?

posted Aug 9, 2016 by Ganesh

0 votes

0 answers

What is BWP SR configuration in 5G?

posted Nov 29, 2017 by Jaganathan

0 votes

1 answer

LTE : What information is sent in buffer status report from UE to eNodeB ?

posted Sep 9, 2016 by Harshita

+2 votes

2 answers

How two ENB communicates about scheduling information of UE's in LTE CA?Which interface it uses to communicate?

posted Oct 3, 2017 by Ankit Mishra

+1 vote

2 answers

LTE-Advanced: Is it necessary primary cell and secondary cells should have same coding and modulation schemes?

posted Mar 8, 2016 by Harshita

+2 votes

1 answer

Can more than one QOS flow data flows into the single DRB in 5G?

posted Jan 3, 2018 by Himani

+1 vote

2 answers

Will UE transmit SRS for Whole bandwidth or particular BWP?

posted Jun 12, 2018 by Jaganathan

+1 vote

3 answers

Mac or Linux for Python Development?

posted Feb 23, 2014 by Ahmed Patel

0 votes

0 answers

What is the use of nomPDSCH-RS-EPRE-Offset in CQI configuration?

posted Feb 18, 2020 by Rohit Verma

+1 vote

1 answer

When UE will use Adaptive retransmission and non-adaptive retransmission in LTE MAC Layer?

posted Oct 6, 2016 by Sneha Maganahalli

0 votes

1 answer

What happens if HARQ max retransmission reaches?

posted Sep 4, 2017 by Himani

+1 vote

2 answers

If RACH trigger is made for SR max re transmission will UE sends MSG3 or not ?

posted Jul 17, 2018 by Rohit Verma

+2 votes

1 answer

LTE-A : Does MAC layer at eNodeB support carrier aggregation dynamically or statically ?

posted Jul 21, 2014 by Harshita