Method for controlling transmission power of HS-SCCH in UMTS system
AssigneeLG Electronics Inc.
InventorsYoung-Dae Lee, Bong-Hoe Kim, Seung-Hoon Hwang
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Abstract
A method for controlling a power of a shared control channel for high speed downlink shared channel (HS-SCCH) in a system adopting a high speed downlink packet access (HSDPA) technique is disclosed, which can control power of HS-SCCH by using the DPCH channel configured in each UE. Especially, by transmitting power of each sub-frame suitably for each UE, and by setting suitable transmission power of HS-SCCH according to whether it is in soft handover and according to whether it is a primary cell in soft handover, an inter-cell interference can be reduced and power of the base station can be effectively used.
Claims19
A method for controlling transmission power of a control channel for a channel shared by plural users, comprising:
- determining transmission power of a channel dedicated to a user,
- setting transmission power of a timeslot of said control channel in relation to said transmission power of a channel dedicated to a user that uses the timeslot.
- transmitting signals over said control channel with the set power.
A method for controlling a transmission power of an HS-SCCH comprising:
- receiving a transmit power control (TPC) command from a mobile station;
- determining transmission power of a downlink dedicated physical channel (DL DPCH) based on the received TPC command;
- and
- determining transmission power of a shared control channel for HS-DSCH (HS-SCCH) transmitted to each mobile station by using a power offset value related to transmission power of the DL DPCH.
A method for controlling transmission power of an HS-SCCH in the HSDPA system where mobile stations receive control information transmitted over HS-SCCH by node B and then receive user data transmitted over HS-DSCH using the control information,
- wherein the transmission power of HS-SCCH is adjusted to power level required for each mobile station, based on the power control of DL DPCH configured for each mobile station.
Dependencies are inferred from the claim text.