Transmission-compensated radio channel quality
AssigneeTelefonaktiebolaget LM Ericsson (publ)
InventorAnders Jonsson
Life of this patent
Estimating the term…
Abstract
A channel quality of a radio channel between a transmitter and a receiver is detected by the receiver. The channel quality is compensated for an affect of a transmission on the radio channel when the receiver detected the channel quality or an affect of a future transmission on the radio channel. In a preferred example embodiment, the channel quality is compensated for both affects if present. The compensated channel quality is then used to determine one or more parameters for transmission from the transmitter to the receiver over the radio channel, e.g., an amount of data to be transmitted, a transmission power, and/or a transmission time period.
Claims14
A method comprising:
- establishing a radio channel between a transmitter and a receiver, wherein the transmitter is a base station in a cellular communications network, the receiver is a mobile radio terminal, and the radio channel is a high speed-downlink shared channel (HS-DSCH);
- determining a channel quality detected by the receiver that is associated with the radio channel;
- compensating the channel quality for an affect of a transmission on the radio channel when the receiver detected the channel quality or an affect of a future transmission on the radio channel;
- determining a total HS-DSCH transmission power when the mobile radio terminal detected the channel quality or when a future transmission on the HS-DSCH is planned;
- determining the compensated channel quality based on the total HS-DSCH transmission power;
- and
- deciding whether the HS-DSCH is code multiplexed, and if so, determining a fraction of the total HS-DSCH transmission power when the mobile radio terminal detected the channel quality or when a future transmission to the mobile radio terminal on the HS-DSCH is planned, and determining the compensated channel quality based on the fraction of the total HS-DSCH transmission power.
Apparatus comprising:
- a radio transmitter for transmitting signals over a radio channel and receiving from a receiver channel quality information detected by the receiver associated with the radio channel, wherein the radio transmitter is a base station in a cellular communications network, the receiver is a mobile radio terminal, and the radio channel is a high speed-downlink shared channel (HS- DSCH), and
- electronic circuitry configured to
- compensate the received channel quality for an affect of a transmission on the radio channel when the receiver detected the channel quality or an affect of a future transmission on the radio channel,
- determine a total HS-DSCH transmission power when the mobile radio terminal detected the channel quality or when a future transmission on the HS-DSCH is planned,
- determine the compensated channel quality based on the total HS-DSCH transmission power, and
- decide whether the HS-DSCH is code multiplexed, and if so, determine a fraction of the total HS-DSCH transmission power when the mobile radio terminal detected the channel quality or when a future transmission on the HS-DSCH to the mobile radio terminal is planned, and determine the compensated channel quality based on the fraction of the total HS-DSCH transmission power.
Dependencies are inferred from the claim text.