Method for transmitting channel quality report in a discontinuous transmission scheme, primary and secondary stations therefor

A primary station comprising:

• receiving means for receiving periodic channel quality reports transmitted by a secondary station, wherein reception of a control channel is carried out discontinuously with a predetermined periodic reception phase,
• means for scheduling reception of a reception sequence of channel quality reports of at least a first type and a second type according to a predetermined pattern,
• means for estimating the number of channel quality reports of the second type scheduled during the reception phases of a predetermined time window,
• means for amending the reception sequence by replacing at least one channel quality report scheduled to be of the first type with a channel quality report of the second type if the number of second type channel quality reports scheduled during the reception phases of the predetermined time window is below a predetermined threshold,
• wherein the receiving means are arranged to receive a sequence transmitted by the secondary station similar to the amended sequence.

A secondary station comprising:

• means for transmitting channel quality reports periodically to a primary station, wherein transmission of a control channel is carried out discontinuously with a predetermined periodic transmission phase,
• means for scheduling transmission of a transmission sequence of channel quality reports of at least a first type and a second type according to a predetermined pattern,
• means for estimating the number of channel quality reports of the second type scheduled during the transmission phases of a predetermined time window,
• means for amending the transmission sequence by replacing at least one channel quality report scheduled to be of the first type with a channel quality report of the second type if the number of second type channel quality reports scheduled during the transmission phases of the predetermined time window is below a predetermined threshold,
• wherein the transmitting means are arranged to transmit the amended sequence to the primary station.

A method for receiving channel quality reports periodically from a secondary station to a primary station, wherein reception of a control channel is carried out discontinuously with a predetermined periodic reception phase, the method comprising steps of

• (a) scheduling reception of a reception sequence of channel quality reports of at least a first type and a second type according to a predetermined pattern,
• (b) estimating the number of channel quality reports of the second type scheduled during the reception phases of a predetermined time window,
• (c) amending the reception sequence by replacing at least one channel quality report scheduled to be of the first type with a channel quality report of the second type if the number of second type channel quality reports scheduled during the reception phases of the predetermined time window is below a predetermined threshold,
• (d) decoding a signal received from the secondary station on the basis of the amended sequence.