Dear colleagues,
In the section 4.1.8 Latency "ARQ loop delay" is required to
be less than 10ms.
If I understand the ARQ loop delay correctly, it
includes
- TX time of a physical frame,
- Propagation time over the air,
- RX time of a physical frame,
- Processing time for acknowledgement,
- TX time of a ACK/NACK frame,
- Propagation time over the air, and
- RX time of an ACK/NACK frame.
ARQ loop delay includes 4 times of physical
frame
if we assume ACK/NACK information is transffered in a
physical frame.
Limiting the delay within 10ms results in limiting the size
of a physical frame
less than 2.5ms.
This requirement will highly restrict physical design
of MBWA.
I think the size of a physical frame should be determined
considering not only delay factor but also many other
factors.
Thus I would like to propose that 10ms requirement in ARQ
loop delay be removed.
Best regards,
Jin
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