From: Improvement of the LPWAN AMI backhaul’s latency thanks to reinforcement learning algorithms
Notation | Event |
---|---|
su | Successful uplink: there is no collision between the uplink packet and another packet. The packet has been received by the base station. |
sd | Successful downlink: the end-device receives the acknowledgement |
sa | Successful acknowledgement: the downlink transmission is successful, the acknowledgement is sent and does not collide with another packet. |
ca | Collision after: the uplink packet has a collision with another uplink packet sent after it. |
cb | Colision before: the uplink packet has a collision with an uplink packet sent before it or with an acknowledgement. |
cub | Collision uplink before: the uplink packet has a collision with an uplink packet sent before it. |
cd | Collision downlink: the uplink packet has a collision with an acknowledgement. |
pss | Packet successfully sent: a packet is successfully sent in the interval [−T d −T m −T a ;−T d −T m ]. |
pb | Packet between: there are packets between the considered packet and its acknowledgement. These packets do not collide with the considered packet or prevent the transmission of the acknowledgement. |