14 Downlink TPC enhancements for UMTS

25.3003GPPGeneral descriptionRelease 17Stage 2TSUniversal Terrestrial Radio Access Network (UTRAN)

In CELL_DCH state, the network can configure a UE with power control Algorithm 3 when the F-DPCH is also configured. For this algorithm, the TPC command is transmitted only once in a certain number of consecutive slots, and other TPC commands are DTXed in the remaining slots. The number of consecutive slots can be configured with 3 or 5 slots.

If a UE is configured with Algorithm 3 on any of the radio links, then all the radio links within the same RLS must have power control Algorithm 3. If power control Algorithm 3 is configured in one RLS, and any of the legacy algorithms is configured in another RLS, then the UE will behave as per Algorithm 3 to determine transmission power under such configuration.

For generation of TPC in uplink DPCCH, the UE will generate and transmit TPC command as per the algorithm configured on the serving radio link.