Patent Number: 6,434,367

Title: Using decoupled power control sub-channel to control reverse-link channel power

Abstract: In a wireless communications system, a base station transmits power control signals (e.g., the power control bits of a power control sub-channel) to a mobile using a forward-link channel that is decoupled from all other signals transmitted from that base station to that mobile. For example, the decoupled forward-link channel may be a common power control channel. The mobile then uses the power control signals received in the decoupled forward-link channel to control its power level for transmitting one or more reverse-link channels to the base station. The ability of base stations to use decoupled forward-link channels in order to transmit their power control signals to a mobile enables a mobile to operate with different active sets for the forward and reverse links. This enables forward-link data traffic to be implemented using a simplex mode, even when the mobile is operating in soft handoff in the reverse link. This in turn greatly reduces the reactivation time involved in transitioning a mobile from the suspended state to the active state, which is particularly desirable for bursty (i.e., intermittent) packet data flow, as opposed to continuous circuit-oriented voice messaging.

Inventors: Kumar; Sarath (Eatontown, NJ), Li; Quinn (Madison, NJ), Wu; Xiao C. (Parsippany, NJ)

Assignee: Lucent Technologies Inc.

International Classification: H04B 7/005 (20060101); H04B 001/00 ()

Expiration Date: 08/13/2019