초록 ▼

In a wireless network containing battery powered stations, one station is designated as a control point (CP). Each of the remaining stations has two operating modes: an active mode in which it receives and transmits messages, and an inactive or sleep mode which incurs reduced power consumption. The

In a wireless network containing battery powered stations, one station is designated as a control point (CP). Each of the remaining stations has two operating modes: an active mode in which it receives and transmits messages, and an inactive or sleep mode which incurs reduced power consumption. The Control Point periodically transmits a beacon signal, and each station switches to its active mode to receive at least some of these beacon signals. A beacon signal may indicate that data is available for transmission to a particular station (from another station), in which case that particular station then broadcasts a message to indicate that it is awake and can receive messages. A beacon signal also indicates whether a broadcast period is in progress, and time to elapse until a next possible broadcast period will commence; if the Control Point has previously received and stored any broadcast messages it will re-broadcast them during the next following broadcast period and the remaining stations will react by remaining in active mode for the duration of that period.

대표청구항 ▼

In a wireless network containing battery powered stations, one station is designated as a control point (CP). Each of the remaining stations has two operating modes: an active mode in which it receives and transmits messages, and an inactive or sleep mode which incurs reduced power consumption. The

In a wireless network containing battery powered stations, one station is designated as a control point (CP). Each of the remaining stations has two operating modes: an active mode in which it receives and transmits messages, and an inactive or sleep mode which incurs reduced power consumption. The Control Point periodically transmits a beacon signal, and each station switches to its active mode to receive at least some of these beacon signals. A beacon signal may indicate that data is available for transmission to a particular station (from another station), in which case that particular station then broadcasts a message to indicate that it is awake and can receive messages. A beacon signal also indicates whether a broadcast period is in progress, and time to elapse until a next possible broadcast period will commence; if the Control Point has previously received and stored any broadcast messages it will re-broadcast them during the next following broadcast period and the remaining stations will react by remaining in active mode for the duration of that period. 1. A method for setting a transmission quality target value for power control in a mobile radiocommunication system, wherein: an offset is applied in an anticipated way to said transmission quality target value to compensate for the effects of a compressed mode whereby transmission is interrupted during transmission gaps in compressed frames, and the transmission rate is correspondingly adapted to compensate for said transmission gaps, said offset includes a first component intended to compensate for the effects of said transmission rate adaptation, and a second component intended to compensate for the effects of said transmission gaps, said transmission rate adaptation applies for a transmission time interval including a compressed frame, and said second component is applied only for said compressed frame and/or for at least one frame, or recovery frame, following said compressed frame. 2. A method for setting a transmission quality target value for power control in a mobile radiocommunication system, a method wherein: an offset is applied in an anticipated way to said transmission quality target value to compensate for the effects of a compressed mode whereby transmission is interrupted during transmission gaps in compressed frames, and the transmission rate is correspondingly adapted to compensate for said transmission gaps, said offset includes a first component intended to compensate for the effects of said transmission rate adaptation, and a second component intended to compensate for the effects of said transmission gaps, said transmission rate adaptation applies for a transmission time interval including a compressed frame, a plurality of transport channels are time-multiplexed in each frame of a physical channel whose transmit power is controlled by said power control, the number of frames of said transmission time interval is likely to be different for each of said transport channels, and said second component is applied for said compressed frame and/or for at least one frame, or recovery frame, following said compressed frame, whatever said number of frames. 3. A method according to claim 1 or 2, wherein said first component is applied for each frame of said transmission time interval. 4. A method according to claim 1 or 2, wherein said first component is applied only for said compressed frame and said at least one recovery frame. 5. A method according to claim 1 or 2, wherein said second component has, for said compressed frame and said at least one recovery frame, respectively, a compressed-frame value and a recovery-frame value. 6. A method according to claim 5, wherein different transmission gaps may have different transmission gap lengths, and said compressed-frame value and/or recovery frame value may be different for said different transmission gap lengths. 7. A method according to claim 2, wherein said offset is determined to enable each of said transport channels to reach its required quality of service. 8. A method for setting a transmission quality target value for power control in a mobile radiocommunication system, a method wherein: an offset is applied in an anticipated way to said transmission quality target value to compensate for the effects of a compressed mode whereby transmission is interrupted during transmission gaps in compressed frames, and the transmission rate is correspondingly increased to compensate for said transmission gaps, said offset includes a first component intended to compensate for the effects of said transmission rate increase, and a second component intended to compensate for the effects of said transmission gaps, said transmission rate increase, either applies not only for a compressed frame, but for a transmission time interval including a compressed frame, or only applies for a compressed frame, depending on whether a first or a second type of compressed mode is used, and said second component is applied for said compressed frame and/or for at least one