This parameter specifies the maximum countdown value of the MS.
This parameter determines BS_CV_MAX and is used for the MS to calculate the CV. The parameter also determines the duration of the T3198 timer.
Every time the MS sends an uplink RLC data block, the receive state of the data block is set to Pending and the T3198 is started. If the MS receives a Packet Uplink Ack/Nack message before T3198 expires, it updates the receive state of each uplink RLC data block based on the acknowledgment bitmap contained in the message. If T3198 for the RLC data block in the Pending state expires, the MS sets the receive state of this data block to Nack and retransmits the data block.