Most answered questions under tag mac

+1 vote

1 answer

What is the use of SR prohibit timer?

posted Dec 6, 2017 by Himani

+3 votes

1 answer

Why do we need long DRX CE over DRX CE in LTE?

posted Dec 5, 2017 by Karan Patel

0 votes

1 answer

BSR reporting

posted Dec 2, 2017 by Sushant Bose

+1 vote

1 answer

What is Supplementary Uplink in 5G ?

posted Nov 24, 2017 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

+1 vote

1 answer

Is it mandatory to do RACH on all the cells of SENB?

posted Nov 16, 2017 by Rohit Verma

+3 votes

1 answer

Can we send UL data in Dual connectivity of Rel12?Why in Rel 12 they were not speaking about UL dual connectivity?

posted Nov 13, 2017 by Rohit Verma

0 votes

1 answer

If we reduce TTI duration in 5G ,how MAC to PHY communication will be?

posted Nov 3, 2017 by Himani

+1 vote

1 answer

LTE: How connected mode DRX and Idle mode DRX are configured ?

posted Oct 20, 2017 by Ganesh

+2 votes

1 answer

Which operator supports connected mode DRX?

posted Sep 21, 2017 by Karan Patel

0 votes

1 answer

Can UE reads PDCCH for PRNTI in DRX mode?

posted Sep 18, 2017 by Bharat Kumar

+1 vote

1 answer

UE activity in DRX On duration?

posted Sep 15, 2017 by Bharat Kumar

+1 vote

1 answer

Why do you need ARQ retransmission?

posted Sep 8, 2017 by Himani

+1 vote

1 answer

Why does RLC retransmitting its PDU after MAX HARQ retx , why not after first HARQ NACK ?

posted Sep 8, 2017 by Himani

0 votes

1 answer

LTE: What is the use of different RV values while sending NACK from eNodeB to UE over the PHICH ?

posted Sep 7, 2017 by Ganesh

+1 vote

1 answer

After reaching max HARQ retransmission still UE retransmitting the TB?

posted Sep 5, 2017 by Himani

0 votes

1 answer

What happens if HARQ max retransmission reaches?

posted Sep 4, 2017 by Himani

0 votes

1 answer

What is the delay between MPI messages?

posted Aug 30, 2017 by Ankit Mishra

+1 vote

1 answer

does seperate harq process exists for BCH?

posted Aug 24, 2017 by anonymous

0 votes

1 answer

Why SGW is buffering UE data, however ENB PDCP buffers the data then why buffering is needed in SGW?

posted Aug 23, 2017 by Charan Shah

0 votes

1 answer

Why do we need LCG in MAC? Instead of LCG can't we use LC?

posted Aug 10, 2017 by Dheerendra

0 votes

1 answer

What is padding BSR and why it is needed?

posted Aug 3, 2017 by Dheerendra

+2 votes

1 answer

How contention will be resolved in case ENB selected preamble?

posted Aug 1, 2017 by Himani

+2 votes

1 answer

Ho many times can we re-transmit the RACH preamble?

posted Aug 1, 2017 by Ankit Mishra

+2 votes

1 answer

Without MAC HARQ configuration how MSG3 is receiving ACK/NACK form ENB ,

posted Jul 27, 2017 by Akhilesh

+2 votes

1 answer

How many no of TB's can be transmitted per TTI in LTE?

posted Jul 20, 2017 by Rohit Verma

+2 votes

1 answer

What is the use of TTI bundling and when it will be enabled?

posted Jul 18, 2017 by Akhilesh

+2 votes

1 answer

Why secondary carrier is not having control channels?

posted Jul 11, 2017 by Himani

+3 votes

1 answer

Are we having dedicated signaling channel in secondary cell group of Rel14?

posted Jun 30, 2017 by Jaganathan

+1 vote

1 answer

What is split Bearer in MAC and How it works?

posted Jun 29, 2017 by Jaganathan

+2 votes

1 answer

What is recommended bit rate MAC CE?

posted Jun 29, 2017 by Jaganathan

+3 votes

1 answer

What is V-RNTI in LTE and When it is used?

posted Jun 28, 2017 by Jaganathan

0 votes

1 answer

DCI signalling from eNB to LAA?

posted Jun 27, 2017 by Balagopal 24

+1 vote

1 answer

What is PDU filtering in MAC Rel14?

posted Jun 23, 2017 by Jaganathan

+2 votes

1 answer

What is the difference between dual connectivity and carrier aggregation in LTE?

posted Jun 22, 2017 by Jaganathan

+1 vote

1 answer

Why UL MIMO is not used widely? Why UL MIMO is only 4 * 4?

posted Jun 13, 2017 by Dheerendra

+3 votes

1 answer

Why do we need HIDCI and UL-CONFIG message in FAPI? because both are carrying UL allocation information.

posted Jun 7, 2017 by Himani

+2 votes

1 answer

LTE: Why radio sub frame is 1 ms long ? Is it possible to bring the sub frame duration in the unit of microseconds ?

posted Jun 6, 2017 by Harshita

+1 vote

1 answer

Why HARQ ACK delay is 3ms?

posted Jun 5, 2017 by Ankit Mishra

0 votes

1 answer

How do I reset the password on my Mac?

posted May 31, 2017 by anonymous

0 votes

1 answer

What is multiplexing in MAC?

posted May 30, 2017 by Ankit Mishra

0 votes

1 answer

WHy HARQ re-ordering in is RLC?But HARQ functionality is done by MAC?

posted May 26, 2017 by Himani

0 votes

1 answer

What is maxHARQ-msg3Tx IE in RACH config ?

posted May 15, 2017 by Gnanendra Reddy

0 votes

1 answer

Why LCP is only at UE side , why not at ENB side?

posted Apr 28, 2017 by Poonam

0 votes

1 answer

Is there any UL scheduler available at UE side ?

posted Apr 26, 2017 by Poonam

0 votes

1 answer

How UE will calculate channel quality indicator ?

posted Apr 21, 2017 by Himani

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 bucket size duration in LTE?

posted Apr 17, 2017 by Ankit Mishra

0 votes

1 answer

How warning messages scheduled in MAC layer?

posted Apr 13, 2017 by Sakshi Rai

0 votes

1 answer

how to decide scaling factor and duration of PHICH?

posted Apr 11, 2017 by Sakshi Rai