Abstract: A base station transmits blocks, in successive transmission time intervals, to radio terminals, over communication channels shared between the radio terminals comprising traffic channels and control channels associated with traffic channels, some of the transmitted blocks being positively or negatively acknowledged by the radio terminals. With regard to a radio terminal: a quality indication relative to said traffic channel is determined; a quantity relative to acknowledgements transmitted to the base station beforehand is determined; a transmission power on the traffic channel and/or the associated control channel is calculated, for the next corresponding transmission time interval, from said quality indication and said quantity relative to acknowledgements.

Abstract: For a new transmission time interval, respective weights are assigned to queues. The queues are ranked as a function of the weights assigned to them. The first queue according to the ranking is selected. A quantity dependent on the radio conditions in respect of the radio terminal to which the said radio session relates, and on a number of packets already transmitted within the context of the said session is calculated for each session within the context of which it is required to transmit data packets placed in the selected queue. Communication resources are allocated to some of the sessions so as to transmit a number of data packets placed in the selected queue, depending on the weight assigned to the selected queue, the said sessions being determined as a function at least of the said quantities calculated. Once the selected queue has been served, and if there are still resources available for the transmission time interval, we pass to the next queue in the ranking so as to serve it.

Abstract: A sequence of modulation symbols defines at least two bit groups, including a first group of bits located in at least one first bit position within the symbols and a second group of bits located in at least one second bit position within the symbols and having a higher probability of transmission error than the bits of the first group. The coded information bits of a block are arranged to form a first sequence of bits in which each information bit is assigned to a respective one of the bit groups. The bits of the first sequence are then interleaved to form a second sequence of bits while preserving the assignment of the information bits to the bit groups. The bits of the second sequence are finally mapped onto the sequence of modulation symbols.

Abstract: A base station transmits blocks, in successive transmission time intervals, to radio terminals, over communication channels shared between the radio terminals comprising traffic channels and control channels associated with traffic channels, some of the transmitted blocks being positively or negatively acknowledged by the radio terminals. With regard to a radio terminal: a quality indication relative to said traffic channel is determined; a quantity relative to acknowledgements transmitted to the base station beforehand is determined; a transmission power on the traffic channel and/or the associated control channel is calculated, for the next corresponding transmission time interval, from said quality indication and said quantity relative to acknowledgements.

Abstract: A method of selecting a retransmission mode, for the transmission of data which have been first transmitted in acknowledged mode between a transmitter unit and a receiver unit over an interface, and for which no positive acknowledgement of said first transmission has been received at the transmitter unit, the data being processed according to an error correcting encoding scheme prior to transmission over the interface, is provided. The number of bits to be encoded and the number of bits to be sent over the interface are compared, and a type of retransmission mode for the retransmission of the first transmitted data is determined.

Abstract: For a new transmission time interval, respective weights are assigned to queues. The queues are ranked as a function of the weights assigned to them. The first queue according to the ranking is selected. A quantity dependent on the radio conditions in respect of the radio terminal to which the said radio session relates, and on a number of packets already transmitted within the context of the said session is calculated for each session within the context of which it is required to transmit data packets placed in the selected queue. Communication resources are allocated to some of the sessions so as to transmit a number of data packets placed in the selected queue, depending on the weight assigned to the selected queue, the said sessions being determined as a function at least of the said quantities calculated. Once the selected queue has been served, and if there are still resources available for the transmission time interval, we pass to the next queue in the ranking so as to serve it.

Abstract: A method of communication between a user station and first and second base stations in which the user station is simultaneously in bi-directional wireless communication with said first and second base sttions, including a data transmission step in which an uplink signal including user data for communication to another user via the base stations is transmitted from said user station to said first and second base stations, said base station data (23) in said uplink signal including first items (26) that are processed selectively in said first base station (1) and second items (27) that are processed selectively in said second base station.

Abstract: In a method for channel equalization a communications receiver receives an input data stream comprising modulation symbols. A reduced set sequence estimation algorithm produces intermediate hard decisions, based on the input data stream and on a channel reference, which are applied to a decision feedback filter in a feedback loop. Soft output sequences of emitted symbols are also produced, based on the input data stream, which are decoded, error-corrected and re-encoded. The error-corrected soft output sequences are iteratively applied to the decision feedback filter, such that a channel equalized received data stream is generated based on both the feedback soft output sequences and the intermediate hard decisions. An iterative decision-aided equalizer is also described. In this manner, errors corrected by the decoder are not re-introduced into the decision feedback filter, hereby reducing the effect of error propagation in decision-aided feedback equalizers.

Abstract: A sequence of modulation symbols defines at least two bit groups, including a first group of bits located in at least one first bit position within the symbols and a second group of bits located in at least one second bit position within the symbols and having a higher probability of transmission error than the bits of the first group. The coded information bits of a block are arranged to form a first sequence of bits in which each information bit is assigned to a respective one of the bit groups. The bits of the first sequence are then interleaved to form a second sequence of bits while preserving the assignment of the information bits to the bit groups. The bits of the second sequence are finally mapped onto the sequence of modulation symbols.