General aspects and concepts for time distribution
Requirement categories (based on external standards, e.g. 3GPP)
Defines timing interfaces (e.g. 1pps) and associated serial time-of-day messages
Level of Accuracy | Time error requirements | Typical applications |
---|---|---|
1 | 500ms | Billing, alarms |
2 | 100µs | IP Delay monitoring |
3 | 5µs | LTE TDD (≥ 3km cell) |
4 | 1.5µs | UTRA-TDD, LTE-TDD, NR TDD Synchronous Dual Connectivity NR Carrier Aggregation |
5 | 1µs | WiMAX-TDD (some configurations) |
6 | <500ns | Various radio co-ordination techniques |
Message types:
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