Research Article
TETRA Backhauling via Satellite: Improving Call Setup Times and Saving Bandwidth
Table 5
A-bis backhauled TETRA call setup times using PEPs.
| | Call type | Ack./unack. | Call setup time [s] | Calling user permission to transmit [s] | Called user permission to receive [s] | Timer constraints |
| | Group call (scenario 1) | Unack. | 0.770 | 0.770 | 0.790 | — | | Ack. | 0.770 | 0.850 | 0.870 | — |
| | Group call (scenarios 2 and 3) | Unack. | 0.770 | 0.770 | 0.750 | — | | Ack. | 0.770 | 0.850 | 0.830 | — |
| | Group call (scenario 4) | Unack. | 0.890 | 0.890 | 0.870 | — | | Ack. | 0.890 | 0.970 | 0.950 | — |
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