Power control for downlink and uplink channels

Details Power control for downlink and uplink channels Power control for downlink and uplink channels

H - Electricity

04

W

H04W 52/18 (2009.01) H04B 7/005 (2006.01)

Patent

CA 2542299

A wireless communication method and apparatus for controlling the power of signals transmitted by downlink (DL) and/or uplink (UL) coded composite transport channels (CCTrCHs). A base station transmits signals to a wireless transmit/receive unit (WTRU) via at least one DL CCTrCH, and/or the WTRU transmits signals to the base station via at least one UL CCTrCH. The base station determines whether or not discontinuous transmission (DTX) of a UL CCTrCH that controls the power of a DL CCTrCH is employed, and/or the WTRU determines whether or not DTX of a DL CCTrCH that controls the power of a UL CCTrCH is employed. The power of the CCTrCHs is incremented or decremented by a first step size when DTX is employed, and by a second step size when DTX is not employed.

L'invention concerne un procédé et un appareil de communication sans fil permettant de réguler la puissance des signaux transmis par des canaux de transport composites codés (CCTrCH) descendants (DL) et/ou montants (UL). Une station de base émet des signaux vers une unité d'émission/de réception (WTRU) par le biais d'un CCTrCH descendant et/ou une WTRU émet des signaux vers la station de base par le biais d'au moins un CCTrCH montant. La station de base détermine si une transmission discontinue (DTX) d'un CCTrCH montant qui régule la puissance d'un CCTrCH descendant est ou non utilisée, et l'unité WTRU détermine si la DTX d'un CCTrCH descendant qui régule la puissance d'un CCTrCH montant est ou non utilisée. La puissance des CCTrCH est incrémentée ou décrémentée d'un premier pas lorsque la DTX est utilisée, et d'un second pas lorsque la DTX n'est pas utilisée.

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