top button
Flag Notify
    Connect to us
      Site Registration

Site Registration

Does ARQ follows stop and wait mechanism for data transfer?

+1 vote
394 views
Does ARQ follows stop and wait mechanism for data transfer?
posted Sep 26, 2017 by Rohit Verma

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

1 Answer

0 votes

Hi,

ARQ will not wait for and acknowledgement to send next PDU,it sends chunk of PDU on shot and waits for the ack, stop and wait mechanism means once sends PDU then it waits until receiver sends ack,but ARQ doesn't follow this.

answer Oct 5, 2017 by Jaganathan
Similar Questions
+1 vote

MBMS Data receives from MBMS-GW to eNodeB module interfacing towards MBMS-GW. It removes GTP-U header and sends data to lower layer i.e RLC. As per my understanding so far, RLC does segmentation and re-assembling for the received upper layer PDU to make it fit into MAC PDU. Now I want to know, Does the same concept applicable for MBMS data also or for RLC it is transparent mode transmission.

Which format is used by RLC for the MBMS transmission ?

+1 vote

RLC is one of the L2 layer in LTE radio protocol stack. It does many functions such as segmentation, re-assembling and along with that it supports various transmissions mode like transparent mode, acknowledgement mode and un-acknowledgement mode.
Now I want to understand for which type of RLC SDUs and PDUs transparent mode transmission is used.
Does the RLC create single RLC entity at cell level or at the UE level or at the bearer level ?

+4 votes

Can someone please put some light on this feature of LTE RLC layer ? I read about "Protocol error detection and recovery" at many places but couldn't understand well.

+1 vote

Why do you need ARQ retx, however max HARQ retransmission is failed even if you retransmit at ARQ level it may fail then why do we need it?

0 votes

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.

...