stds-80220-requirements: 4.1.9 Latency- ARQ loop delay

[Jin-Weon Chang <jwchang1@samsung.com>]

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