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Required beam-tracking operation when a behavioral or environmental change occurs.
| Item | Beam-Tracking | Rotation | Displacement | Blocking |
|---|---|---|---|---|
| Characteristics of change | θT (Tx AoD) | No change | Change | No change |
| θR (Rx AoA) | Change | Change | No change | |
|
| ||||
| Required beam-tracking | Rx beam-tracking | Necessary | Necessary | Not necessary |
| Tx beam-tracking | Not necessary | Necessary | Not necessary | |
| Secondary beam | Not necessary | Not necessary | Necessary | |
