Nokia Corporation

Outi Rikola

Anu Virtanen

Pasi Kinnunen

Sami N Salonen

Anna-Mari Seppänen

Disclosed is a mobile station executed method for updating a signal-to-interference ratio (SIR) target during a discontinuous transmission (DTX) period of a downlink transport channel having a network specified quality target value, as is a mobile station () that operates in accordance with the method. The method includes measuring a quality, such as the BLER, of another downlink transport channel for which a network () has not specified a quality target value; and updating the SIR target in accordance with the measured quality. For a case where the downlink transport channel for which the network has not specified a quality target value is on a power controlled physical channel, updating the SIR target uses the measured quality. For a case where the downlink transport channel for which the network has not specified a quality target value is on a non-power controlled physical channel, updating the SIR target includes: (a) determining a mapping function, (b) applying the mapping function to the measured quality to obtain a weighted quality, and (c) using the weighted quality for updating the SIR target. In the preferred embodiment the mobile station conforms to a wide bandwidth, code division multiple access (WCDMA) third generation partnership project (3GPP) air interface standard.

Method and apparatus for maintaining desired link quality when no data is transmitted on transport channels having quality targets

The invention relates to a receiver and a reception method in a data transmission system wherein a signal to be transmitted can comprise information that is transmitted in a frame form by using several different transport formats, in which frames also information on the transport format used is transmitted by means of transport format indicators, and in which system the information to be transmitted is coded by a coding depth depending on the properties of the information to be transmitted, at least some of the coding depths being multiples of a given basic coding depth Tk. In order to express the transmission mode reliably when the signal is received which is known to contain information coded by using a coding depth of n*Tk, if it is detected that n&minus;x frames have been received, where a positive integer x is lower than n, in which frames transport format indicators have been identified indicating that the frame comprises the information coded using the known coding depth n*Tk, and x frames wherein the transport format indicators do not indicate that the signal comprises the information coded using the known coding depth n*Tk, it is inferred that the x frames in question have been received erroneous.

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Oulu, Finland

Outi Rikola