Abstract: In a method for power control in a telecommunication system, the transmit power is adjusted based on at least the mutual information expression or a representation thereof. According to one aspect the transmit power for a coming slot is controlled based on the previously received slots, wherein an estimated quality is compared to a determined quality target based on the mutual information expression.

Abstract: In a method for selecting modulation and coding scheme for data transmitted from a transmitter to a receiver, the transmitter determines an estimated channel quality value. The transmitter then adjusts the estimated channel quality value in relation to a distribution of estimated channel quality values, and selects modulation and coding scheme based on the adjusted channel quality value. The invention also extends to a transmitter and a computer program product configured to select modulation and coding scheme accordingly.

Abstract: Network node (100), mobile terminal (200), method and computer program wherein a network node (100) or a mobile terminal (200) comprise a transceiver (110, 210) which is adapted for transmitting data frames comprising data transport blocks and redundancy information, further comprising a processing unit (120, 240) receiving at least one parameter value indicative of the quality of a radio channel and at least one message indicative of an actual block error rate for the transmitted data frame, wherein the processing unit (120, 240) determines an expected block error probability for each transmitted data frame and adjusts the at least one received parameter value based on the difference between an at least one previously calculated block error probability and the actual block error rate.

Abstract: When a high SIR can be achieved for downlink data transmission, for example in a MIMO system, or when higher order modulation, such as 64 QAM, can be used, it is desired to measure the instantaneous downlink channel quality indicator (CQI), and report the measured CQI to the network using the same number of bits as when a lower SIR can be achieved. In order to do this, a true CQI is derived based upon at least one network controlled parameter and a measured channel quality parameter; and the true CQI value is scaled to a new CQI value such that the new CQI will fall within a specified range of CQI values; so that the new CQI achieved by scaling the derived CQI value can be reported with every CQI value over the entire reporting range requiring the same number of bits.

Abstract: A method and apparatus for controlling the transmit power of a mobile device in a mobile communication network takes the level of self-interference into account to perform inner-loop power control. For normal inner-loop power control, a signal quality estimate is compared to a signal quality target and power control commands are generated based on the comparison. When self-interference is the dominant impairment in the received signal, a “fast break” is introduced to change inner-loop power control command generation.

Abstract: A received total wideband power in a wireless communications system is measured (202) a number of times during a time interval. A site communication throughput is determined (204) and processed (206) into a time averaged site communication throughput. A probability distribution for received total wideband power is estimated (210) from the measured received total wide-band power. An estimate of a noise floor measure is computed (214) based on the probability distribution for received total wideband power and a noise rise measure is calculated (218) based on the probability distribution for received total wideband power and the estimate of a noise floor measure. According to the present invention, an adjustment (208) of the noise rise measure is provided based on the averaged site communication throughput.

Abstract: The present invention relates to methods and arrangements in cellular communication networks exhibiting dynamic cell coverage, in particular, to estimate the uplink coverage in a network in operation. According to the method of the present invention a received rate is determined from at least one mobile terminal being in a communication session, by measuring the number of received transport blocks during a predetermined time interval. The received rate is compared with a predetermined expected rate, and if the received rate is below the expected rate poor coverage is identified. Since the coverage is potentially load dependent an estimate of the uplink coverage has been obtained.

Abstract: The invention relates to background noise estimation in wireless communication systems with power control. The total received interference is measured at a receiving unit. Thereafter, a predetermined noise signal is injected at the receiving unit and the total received interference is measured again, preferably when the power control of the system has responded to the noise injection. The background noise is calculated based on the injected predetermined noise signal and the interference measurements before and after the noise injection.

Abstract: A method for improved outer loop power control in a communication system, comprising collecting (S1) quality measurements for a plurality of sub-block within a received coding block; mapping (S2?) the collected sub-block level quality measurements to a block level quality measure, and adjusting (S3?) the inner loop power control requirement based at least on a representation of the block level quality measure.

Abstract: In a method for power control in a telecommunication system, the transmit power is adjusted based on at least the mutual information expression or a representation thereof. According to one aspect the transmit power for a coming slot is controlled based on the previously received slots, wherein an estimated quality is compared to a determined quality target based on the mutual information expression.

Abstract: The present invention employs training sequence hopping in a cellular communications system to permit tight frequency reuse by minimizing or avoiding co-channel interference and/or other signal degrading phenomena. During a first portion of a transmission, e.g., a first burst, a first training sequence is used. During a second portion of that transmission, e.g., a second burst, a second different training sequence is used. Different training sequences are used for different portions of the transmission according to a predetermined training sequence hopping pattern and with a predetermined number of training sequences. The portion duration can extend for the length of a burst, for more than one burst, for a speech frame, or for some other time period.

Abstract: The present invention employs training sequence hopping in a cellular communications system to permit tight frequency reuse by minimizing or avoiding co-channel interference and/or other signal degrading phenomena. During a first portion of a transmission, e.g., a first burst, a first training sequence is used. During a second portion of that transmission, e.g., a second burst, a second different training sequence is used. Different training sequences are used for different portions of the transmission according to a predetermined training sequence hopping pattern and with a predetermined number of training sequences. The portion during can extend for the length of a burst, for more than one burst, for a speech frame, or for some other time period.

Abstract: A method of managing access request identifiers in a communication system comprising a radio network, said access request identifiers being associated with a first packet random access channel used by mobile stations in a first cell to request allocation of uplink transmission resources in the first step. The radio network controls which mobile stations are assigned access request identifiers and/or for how long accesss request identifiers remain assigned to individual mobile stations.