RLC Parameters in AM mode
It will hold the value of SN of AMD for which poll bit is set.
Number of PDUs sent since the most recent poll bit transmitted.
Number of bytes since most recent poll bit transmitted
Number of re-transmission count of PDU’s
5. AM_WINDOW 512
5bit – value set to 16
10bit – value set to 512
Below are the timers that will be configured by RRC
AM Tx RLC entity in order to retransmit a poll.
THis timer is used by Rx entity of AM RLC and Rx UM RLC in order to detect loss of RLC PDU at lower layer. After dectecting PDU packet failure the Rx AM/UM will wait for this timer to expire to completely discard the PDU.
Only one t-Reordering can be running at a time.
It is used by the receiving side of an AM RLC entity in order to prohibit transmission of a STATUS PDU.
RLC Configurable parameters from RRC
Used by Tx entity to limit the number of retransmissions of an AMD PDU.
This is AM Tx entity to trigger poll for every pollPDU PDUs
This is AM Tx entity to trigger poll for every pollByte bytes
This parameter gives UM SN field size in bits.
Reference TS 36.322