top button
Flag Notify
    Connect to us
      Site Registration

Site Registration

LTE: How MAC layer behaves for Multicast data under MBMS services ?

+3 votes
465 views

My question is related to MTCH, which is nothing but multicast logical channel for data. What different function performed by MAC layer to send this type of data as compared to normal UE's data.

posted Jan 21, 2014 by Vimal Kumar Mishra

Share this question
Facebook Share Button Twitter Share Button LinkedIn Share Button

1 Answer

+1 vote

There are mainly 3 types of data, which is transmitted from eNodeB towards UE.
1. Dedicated data.
2. Multicast data. (a group of user can access).
3. Broadcast data.(all the users of a cell can access like Mobile TV).

For dedicated data, HARQ processes works for an UE. But in case of Multicast there is no HARQ process.

answer Jan 22, 2014 by Harshita
Similar Questions
0 votes
LTE: Does the MAC perform dynamic scheduling for MBMS data or it is persistent throughout the MBMS session duration ?

In case of UE specific data transmission MAC layer allocates radio resources on dynamic basis. When we say dynamic resource allocation it means in each TTI (subframe) different amount of data is sent over the over considering various factor QCI, amount of data buffered at RLC and available radio resource.
What about the MBMS data transmission. MBSFN subrames are fixed in radio frame for the MBMS data transmission. Is there really need of any dynamic resources allocation for the MBMS data comes from RLC layer or it is persistent since required modulation and coding other parameters are already known at the time of bearer establishment and these parameters does not change throughout the data transmission of MBMS data.

+4 votes
LTE : Which sub frames of a radio frames can't be used for multicast and broadcast services ?

Can someone please explain which all sub frames of a radio frame (FDD mode) can't be used for multicast and broadcast services and what are the reasons for that ?

...