From: Mobile M2M communication architectures, upcoming challenges, applications, and future directions
Parameters | Class 0 | Class 1 | Class 2 | Class 3 | Class 4 |
---|---|---|---|---|---|
Use cases | e-healthcare, | Mobile POS | Intelligent | Smart homes, | Metering, |
 | emergency | (point of sale) | transportation, | security | monitoring |
 | alerting |  | streaming, |  |  |
Traffic types | Random, | Random, | Random | Random | Regular |
 | real time | real time |  |  |  |
Priority | Strict, high | Low-1 | Low-2 | Low-3 | Low-3 |
Data size in bytes | Small | Small | Small | Small/medium | Large |
Inter-send time | Seconds | Seconds | Minute | Minute | Seconds |
 |  |  |  | ↓ | ↓ |
 |  |  |  | hours | hours |
Mobility | Low | Low | Low | No | Low |
 |  |  | ↓ |  |  |
 |  |  | high |  |  |
Delay budget | Milliseconds | Milliseconds | Milliseconds | Minute | Seconds |
 |  |  | ↓ |  | ↓ |
 | [approx. 125 ms] |  | minute |  | hours |