Abstract: The present invention relates to the signaling of channel quality information in a multi-beam transmission system, wherein a plurality of beams are simultaneously transmitted and a plurality of sets of channel quality information are transmitted for controlling independently the transmission rate on the different beams. Determined are beams with a different quality resulting in different effects of errors in the transmissions of the channel quality information for the beams. Said different effects are exploited for reducing a signaling overhead of the channel quality information for the beams.

Abstract: The present invention relates to a method for communicating in a network comprising at least one primary station communicating with at least one secondary station, comprising (a) the secondary station sending to the primary station a buffer status report representative of the amount of data in a buffer of the secondary station, (b) in absence of acknowledgement from the primary station, the secondary station retransmitting the buffer status report and, (c) if a maximum number of retransmissions has been reached, the secondary station sending a further buffer status report to the primary station.

Abstract: The present invention relates to the signaling of channel quality information in a multi-beam transmission system, wherein a plurality of beams are simultaneously transmitted and a plurality of sets of channel quality information are transmitted for controlling independently the transmission rate on the different beams. Determined are beams with a different quality resulting in different effects of errors in the transmissions of the channel quality information for the beams. Said different effects are exploited for reducing a signaling overhead of the channel quality information for the beams.

Abstract: The present invention relates to a method for communicating in a network, said network comprising a primary station and at least a first secondary station, wherein the first secondary station transmits to the primary station an indication of a first plurality of precoding vectors, wherein the number of first precoding vectors is greater than a preferred rank of transmission from the primary station to the first secondary station.

Abstract: A data signal is transmitted in a wireless communication system from a primary station to a secondary station. The data signal comprising a medium access control header (MAC-hs header) and a protocol data unit associated with the medium access control header. The medium access control header comprising a set at least one field (e.g. TSN, SEG, LI, FMT, LCid), wherein a size allocated to at least one field of the set is determined based on a length of the protocol data unit. For example, the size allocated to a segmentation indication field (SEG) determined for a protocol data unit of a first length is less than the size determined for a protocol data unit of a second length, the second length being higher than the first length, the segmentation indication depending on a number of segments that the protocol data unit is subdivided into.

Abstract: The present invention relates to a method for operating a communication system in a network, the system comprising a primary station and at least one secondary station, the primary station comprising a plurality of transmit antennas and the secondary station comprising a plurality of receive antennas, the method comprising the steps of the primary station selecting a first communication scheme among a plurality of communication schemes, the primary station computing a transmission vector on the basis of the first communication scheme, the secondary station computing a reception vector on the basis of a second communication scheme, the second communication scheme being selected among the plurality of communication schemes by the secondary station on the assumption that a predetermined communication scheme is being used by the primary station.

Abstract: The present invention relates to a method of communicating in a network, comprising a secondary station transmitting to a primary station a data packet comprising a report, the secondary station monitoring before transmission of the packet whether said packet includes an indication of the order of transmission in a sequence of transmitted packets, and adding an indication of the order of transmission in a sequence of transmitted packets.

Abstract: The present invention relates to space-time or space-frequency coding in cellular systems. The same data is transmitted from different antennas with different coverage areas, corresponding to different cells. The different data streams have different parts of the space-time block codes applied. A mobile terminal can combine the different parts of the space-time block codes in different received signals. This provides better performance than the known techniques for single frequency networks. The invention can also be applied to antennas with different coverage areas from the same site, and different beams formed with antenna arrays.

Abstract: A method of transmitting a data signal in a wireless communication system from a primary station to a secondary station, where the data signal includes a medium access control header (MAC-hs header) and a protocol data unit associated with the medium access control header. The medium access control header includes a set of fields (TSN, SEG, LI, LCid). The method includes determining a size allocated to at least one field of the set based at least in part on a length of the protocol data unit. For example, the size allocated to a segmentation indication field (SEG) determined for a first length of the protocol data unit is lower than the one determined for a second length of the protocol data unit, where the second length being higher than said first length, where the segmentation indication indicates in how many segments the protocol data unit is subdivided.

Abstract: The present invention relates to a method for operating a communication system in a network, the system comprising a primary station and at least one secondary station, the primary station comprising a plurality of transmit antennas and the secondary station comprising a plurality of receive antennas, the method comprising the steps of the primary station selecting a first communication scheme among a plurality of communication schemes, the primary station computing a transmission vector on the basis of the first communication scheme, the secondary station computing a reception vector on the basis of a second communication scheme, the second communication scheme being selected among the plurality of communication schemes by the secondary station on the assumption that a predetermined communication scheme is being used by the primary station.

Abstract: The present invention relates to space-time or space-frequency coding in cellular systems. The same data is transmitted from different antennas with different coverage areas, corresponding to different cells. The different data streams have different parts of the space-time block codes applied. A mobile terminal can combine the different parts of the space-time block codes in different received signals. This provides better performance than the known techniques for single frequency networks. The invention can also be applied to antennas with different coverage areas from the same site, and different beams formed with antenna arrays.

Abstract: The present invention relates to space-time or space-frequency coding in cellular systems. The same data is transmitted from different antennas with different coverage areas, corresponding to different cells. The different data streams have different parts of the space-time block codes applied. A mobile terminal can combine the different parts of the space-time block codes in different received signals. This provides better performance than the known techniques for single frequency networks. The invention can also be applied to antennas with different coverage areas from the same site, and different beams formed with antenna arrays.

Abstract: The present invention relates to the signaling of channel quality information in a multi-beam transmission system, wherein a plurality of beams are simultaneously transmitted and a plurality of sets of channel quality information are transmitted for controlling independently the transmission rate on the different beams. Determined are beams with a different quality resulting in different effects of errors in the transmissions of the channel quality information for the beams. Said different effects are exploited for reducing a signaling overhead of the channel quality information for the beams.

Abstract: The present invention relates to the signaling of channel quality information in a multi-beam transmission system, wherein a plurality of beams are simultaneously transmitted and a plurality of sets of channel quality information are transmitted for controlling independently the transmission rate on the different beams. Determined are beams with a different quality resulting in different effects of errors in the transmissions of the channel quality information for the beams. Said different effects are exploited for reducing a signaling overhead of the channel quality information for the beams.

Abstract: The present invention relates to the signaling of channel quality information in a multi-beam transmission system, wherein a plurality of sets of channel quality information are transmitted for controlling the transmission rate on one of the beams, wherein each set of channel quality information is derived dependent on an assumed parameter of at least one other beam which could be transmitted, comprising selecting a parameter of the transmission of each of the sets of channel quality information dependent on the assumed parameter of the at least one other beam.

Abstract: The present invention provides a transmission method and apparatus for cancelling inter-carrier interference in wireless communication systems. Particular carriers are not used for data transmission but carry weighted data to cancel the ici interference of a first group of interfering sub-carriers onto a second group of victim sub-carriers. The weights are inversely proportional to the frequency offset between the interfering sub-carriers and the victim sub-carriers.

Abstract: The present invention relates to a method for communicating in a network, comprising a) a secondary station preparing the transmission to a primary station of a message comprising at least a data field for containing data in an allocated resource, said resource comprising a plurality of resource blocks, and b) if the size of the allocated resource is bigger than required for the size of the message, the secondary station dividing the allocated resource in a first portion and a second portion, each portion comprising at least one resource block, c) the secondary station transmitting the message to the primary station in the first portion of the resource, d) the secondary station preventing from transmitting in the second portion of the resource.

Abstract: The present invention relates to a multi-beam transmission apparatus and system, and to a method for operating a multi-beam transmission system, wherein a first transmission resource information and a second transmission resource information are determined for respective first and second transmission beam, and wherein a first transmission parameter information and a second transmission parameter information are determined for the respective first and second transmission beams. The first and second transmission resource information and the first and second transmission parameter information are jointly encoded into a joint signal; and the joint signal is transmitted via the first and second transmission beams from a first station to a second station.

Abstract: A method is disclosed for transmitting channel quality reports periodically from a secondary station to a primary station, wherein transmission of a control channel is carried out discontinuously with a predetermined periodic transmission phase, and wherein said method comprises the following steps. Scheduling the transmission of a transmission sequence of channel quality reports of at least a first type and a second type according to a predetermined pattern. Estimating the number of channel quality reports of the second type scheduled during the transmission phases of a predetermined time window. 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. Transmitting the amended sequence to the primary station.

Abstract: In a radio communication system having a data channel for the transmission of data packets from a primary station to a secondary station, a plurality of downlink control channels are used to signal information relating to packet transmission. A problem with this scheme is that with a fixed control channel allocation system throughput (T) for a given offered load (O) can be significantly reduced in a worst case scenario (for example two secondary stations using the same control channel). One solution uses an indicator signal to inform a secondary station of the control channel it should receive, but this adds significant complexity to the system. The present invention provides a simpler scheme having similar benefits by shuffling the allocation of control channels to secondary stations, according to a defined sequence for each secondary station, thereby avoiding the worst case scenario.