Most viewed questions under tag mac

+2 votes

1 answer

How contention will be resolved in case ENB selected preamble?

posted Aug 1, 2017 by Himani

+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

Is there any way i can get the MAC addresses of any computer using JavaScript?

posted Apr 30, 2014 by Samardeep Acharya

+2 votes

0 answers

What is BWP common DL& UL configuration in NR?

posted Feb 1, 2018 by Jaganathan

+1 vote

1 answer

What is PDU filtering in MAC Rel14?

posted Jun 23, 2017 by Jaganathan

+1 vote

2 answers

Why we need MAC to PHY interface in LTE? Why we dont have standard interface between other layers ?

posted Jun 2, 2017 by Himani

0 votes

0 answers

Is it possible to do RACH in both MAC entity parallely in 5G NR?

posted May 7, 2018 by Ankit Mishra

+1 vote

1 answer

Why do you need ARQ retransmission?

posted Sep 8, 2017 by Himani

+1 vote

1 answer

what will happen if previous harq gives NACK and cs-rnti is overrided by c-rnti ?

posted Mar 12, 2018 by Dhianesh

0 votes

0 answers

What is the priority order of LC's in 5G?

posted Nov 29, 2017 by Jaganathan

0 votes

1 answer

Re-transmission at lower layers

posted Dec 27, 2017 by Sushant Bose

+2 votes

1 answer

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

posted Jul 18, 2017 by Akhilesh

+1 vote

3 answers

what is MBSFN feature in LTE?

posted Oct 14, 2016 by Sneha Maganahalli

+3 votes

2 answers

LTE: Is there any relationship between pre-coding matrix index and rank index ?

posted Sep 25, 2016 by Ganesh

+1 vote

1 answer

When Measurement gap and HARQ feedback collides will UE does adaptive HARQ or non adaptive HARQ?

posted Oct 5, 2018 by Jaganathan

0 votes

1 answer

What is the RTT delay in UL 5G?Can gNB sends ack/nack for UL data in same SF?

posted Mar 28, 2019 by Ankit Mishra

+1 vote

0 answers

Can we use different BW for UL and DL in TDD and FDD?

posted Dec 12, 2017 by Karan Patel

+1 vote

0 answers

LTE: How does an UE come to know that allocated sub carriers are different from first slot to second slot ?

posted Jun 15, 2014 by Ganesh

0 votes

0 answers

Why do we have maxHARQ-Msg3Tx only for SpCell?

posted Sep 17, 2018 by Jaganathan

+3 votes

1 answer

LTE: What is transmit diversity and what are the advantages of having it in LTE technology ?

posted Apr 9, 2016 by Harshita

+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

+2 votes

1 answer

What happens if Rel-10 UE fails to decode the PDCCH of Scell?

posted Feb 13, 2020 by Dheerendra

0 votes

1 answer

Does timing advance is applicable for SRS?

posted Jul 20, 2020 by Himani

0 votes

1 answer

How UE will ask grant to send only HARQ,if there is no other data to send from UE?

posted Sep 7, 2018 by Dhianesh

0 votes

1 answer

Is CRNTI same for all the secondary cell or different for each secondary cell?

posted Aug 28, 2018 by Rohit Verma

+2 votes

1 answer

LTE: What F bit field signify in MAC sub header ?

posted Oct 4, 2016 by Vikram Singh

0 votes

1 answer

How Many slots can be configured per SF in NR?

posted Dec 11, 2018 by Bharat Kumar

+1 vote

1 answer

In downlink, does RLC forms different PDUs for each UE scheduled to receive data this TTI or just a single PDU?

posted Feb 20, 2017 by Mayank Gupta

+1 vote

1 answer

How many times UE can ask SR for uplink grant is there any limit for SR for uplink grant?

posted Mar 21, 2017 by Karan Patel

0 votes

1 answer

How ENB decides the grant size to be given in MSG3?

posted Mar 1, 2019 by Charan Shah

+3 votes

1 answer

LTE: Can anyone list down the procedures defined at the MAC layer ?

posted Jul 10, 2018 by Harshita

0 votes

1 answer

How UE behaves If UE receives BWP switching while RACH is ongoing?

posted Oct 29, 2018 by Jaganathan

+1 vote

0 answers

Does NR support sending ACK/NACK in same SF of data reception?

posted Mar 14, 2018 by Ankit Mishra

0 votes

1 answer

Why do we have two following IE in 5G?

posted Mar 12, 2018 by Akhilesh

+1 vote

0 answers

What is Multi-tone MSG3 transmission in LTE?

posted Jun 23, 2017 by Jaganathan

+1 vote

1 answer

LTE: What things need to be implemented in LTE MAC layer to make it MBMS capable ?

posted Oct 24, 2016 by Rupam

+2 votes

1 answer

Does UE supports different TM mode in Scells ?

posted Feb 14, 2020 by Dheerendra

0 votes

1 answer

What happens If UE Is in DRX OFF duration and DRX Re transmission timer is running?

posted Mar 31, 2020 by Akhilesh

0 votes

1 answer

How any RB's are reserved for periodic CQI and SR request?

posted Jul 9, 2018 by Dheerendra

+2 votes

1 answer

Can UE monitor RAR in measurement Gap?

posted Sep 21, 2018 by Jaganathan

+2 votes

1 answer

LTE: Why only PHICH not other channels are transmitted in the Master Information Block ?

posted Jul 25, 2018 by Vikram Singh

+2 votes

1 answer

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

posted Jul 27, 2017 by Akhilesh

0 votes

0 answers

Is it mandatory that Beam failure recovery should use contention free RACH in 5G?

posted Jan 8, 2018 by Jaganathan

+2 votes

0 answers

How MAC scheduler schedules all the UE within TTI duration in 5G?

posted Nov 3, 2017 by Himani

+2 votes

1 answer

What is redundancy version used in every Non adaptive retransmission in LTE ?

posted Dec 7, 2018 by Jaganathan

+1 vote

1 answer

Is There any cases that RLC posts the buffer more than grant given by MAC layer?

posted Jan 19, 2015 by anonymous

0 votes

0 answers

What is the use of SP CSI-RS / CSI-IM Resource Set Activation/Deactivation MAC CE?

posted Jun 11, 2020 by Bharat Kumar

+1 vote

1 answer

Why HARQ ACK delay is 3ms?

posted Jun 5, 2017 by Ankit Mishra

0 votes

1 answer

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

posted Nov 3, 2017 by Himani

+2 votes

1 answer

Which operator supports connected mode DRX?

posted Sep 21, 2017 by Karan Patel