Abstract: A network node in a communications network can configure communication device with a plurality of uplink control channel configurations each having a different number of orthogonal frequency division multiplexing, OFDM, symbols. The network node can further transmit an indication of a selected uplink control channel configuration of the plurality of uplink control channel configurations to the communication device on a downlink control channel.

Abstract: Apparatuses and methods for decoding short physical uplink control channel for. In one embodiment, a method implemented in a network node includes determining whether to use one of a coherent detection and a non-coherent detection of a physical uplink control channel, PUCCH, based at least in part on information relating to the wireless device; configuring the wireless device with a first sequence and a second sequence for a hybrid automatic repeat request, HARQ, acknowledgement information on the PUCCH based at least in part on the determination of the one of the coherent detection and the non-coherent detection, the first sequence corresponding to a HARQ acknowledgement, HARQ-ACK, and the second sequence corresponding to a HARQ non-acknowledgement, HARQ-NACK; and receiving the HARQ acknowledgement information on the PUCCH according to the first sequence and the second sequence.

Abstract: Systems and methods are disclosed herein for transmission of multi- slot Physical Uplink Shared Channel PUSCH with repetitions in a half- duplex system such as a Time Division Duplexing TDD system. A method performed by a wireless device for transmission of multi- slot PUSCH repetitions in a half-duplex system comprises: receiving, from a network node, information related to slot-based configuration in a plurality of slots or mini-slots in the half-duplex system (400); determining multiple consecutive uplink symbols in the plurality of slots or mini-slots based on the information received from the network node (402); transmitting PUSCH repetitions to the network node in the determined multiple consecutive uplink symbols in the plurality of slots or mini- slots (404). In this manner, the uplink multi-slot operation is facilitated, the uplink transmission gain is increased and the coverage of the TDD system is improved.

Abstract: A mechanism for identifying a low performing radio branch at a radio transceiver device. A method is performed by the radio transceiver device that comprises transmitting a reference signal for at least some of the N radio branches in a respective test period. The reference signal in each test period is transmitted according to a test configuration that specifies that during each test period the reference signal is mapped to only one of the N radio branches such that in test period k, where k=1, . . . , N, the reference signal is only transmitted from radio branch k. The method comprises receiving at least one report from another radio transceiver device relating to measurements made by this so-called another radio transceiver device on the reference signal transmitted for these at least some of the N radio branches to identify which of the N radio branches is the low performing one.

Abstract: A method, system and apparatus are disclosed. In one or more embodiments, a network node is configured to communicate with a wireless device (WD). The network node configured to, and/or comprising a radio interface and/or comprising processing circuitry configured to determine if a detected sequence meets one of an acknowledgement (ACK) criterion and negative-acknowledgement (NACK) criterion using at least one bias value where the at least one bias value is based at last in part on a type of service associated with the detected sequence.

Abstract: A mechanism for identifying a low performing radio branch at a radio transceiver device. A method is performed by the radio transceiver device that comprises transmitting a reference signal for at least some of the N radio branches in a respective test period. The reference signal in each test period is transmitted according to a test configuration that specifies that during each test period the reference signal is mapped to only one of the N radio branches such that in test period k, where k=1, . . . , N, the reference signal is only transmitted from radio branch k. The method comprises receiving at least one report from another radio transceiver device relating to measurements made by this so-called another radio transceiver device on the reference signal transmitted for these at least some of the N radio branches to identify which of the N radio branches is the low performing one.

Abstract: There is disclosed a method performed by a User Equipment, UE, for Hybrid Automatic Repeat Request, HARQ, retransmission of data in a multi-antenna wireless communication system. The method comprises, receiving Acknowledgement/Negative Acknowledgement, ACK/NACK, feedback information relating to data transmitted on two streams, and performing, upon rank reduction where only one stream is available for transmission, retransmission of data on a cancelled stream over the remaining stream. There is furthermore disclosed a UE configured for performing the method. A transmission method together with an arrangement for a UE is also disclosed.

Abstract: Techniques for signaling radio link control (RLC) status reports to a wireless network, such as a network supporting multi-carrier High-Speed Downlink Packet Access (HSDPA). An example method performed in a mobile terminal comprises calculating a throughput estimate data transmissions to the mobile terminal, determining a rate at which to send radio link control status reports, based on the throughput estimate, and sending radio link control status reports to the wireless network node at the determined rate. In some embodiments, the mobile terminal determines the rate at which to send radio link control status reports by comparing the throughput estimate to a threshold value and selecting the rate based on the comparison. The threshold value may be received from the wireless network node prior to the comparison.

Abstract: Embodiments herein relate to a method, performed by a network node, for reducing a higher layer signaling overhead in multi antenna wireless communication systems. The network node operates in a communication network, which communication network is adapted to wirelessly serve a network device via a Radio Access, RA, node. The network node obtains information from the network device, which information comprises a category of the network device and a number of layers supported by the network device. The network node determines a length of a codebook subset restriction based on the information obtained from the network device. The network node further sends a codebook subset restriction bit map to the network device, according to the determined length of the codebook subset restriction.

Abstract: A base station node communicates over a radio interface with a wireless terminal. The base station node comprises a controller which, upon basis of channel feedback received from the wireless terminal, is configured to make a precoding codebook bitmap decision regarding a precoding codebook bitmap affecting transmissions between the base station and the wireless terminal. The base station is further configured to communicate the precoding codebook bitmap decision so that the precoding codebook bitmap decision may be implemented by the wireless terminal. In example embodiments and modes the base station sends the precoding codebook bitmap decision using a bitmap decision signal to a radio network controller.

Abstract: Efficient techniques to signal codebook subset restriction bit maps are provided. In some embodiments, a method of operation of a node of a cellular communications network includes determining a codebook restriction for a wireless device. The codebook restriction reduces a full codebook of the wireless device to a reduced codebook. The method also includes providing the codebook restriction to the wireless device with an indication of one or more ranks to which the codebook restriction applies. In some embodiments, this enables reduced signaling overhead from upper layers, improving the throughput of data traffic channels. This may also enable reduced RRC signaling message failures and also reduced latency.

Abstract: Embodiments herein relate to a method, performed by a network node, for reducing a higher layer signaling overhead in multi antenna wireless communication systems. The network node operates in a communication network, which communication network is adapted to wirelessly serve a network device via a Radio Access, RA, node. The network node obtains information from the network device, which information comprises a category of the network device and a number of layers supported by the network device. The network node determines a length of a codebook subset restriction based on the information obtained from the network device. The network node further sends a codebook subset restriction bit map to the network device, according to the determined length of the codebook subset restriction.

Abstract: There is disclosed a method performed by a User Equipment, UE, for Hybrid Automatic Repeat Request, HARQ, retransmission of data in a multi-antenna wireless communication system. The method comprises, receiving Acknowledgement/Negative Acknowledgement, ACK/NACK, feedback information relating to data transmitted on two streams, and performing, upon rank reduction where only one stream is available for transmission, retransmission of data on a cancelled stream over the remaining stream. There is furthermore disclosed a UE configured for performing the method. A transmission method together with an arrangement for a UE is also disclosed.

Abstract: Method and receiver jointly detect and decode a part of an encoded, spread and modulated signal received on a channel in a wireless communication network and corrupted by channel multipath. Differences between the received signal and noiseless theoretical signals corresponding to each of the possible values of the part are calculated using hypothetical transmission matrices. The smallest difference corresponds to the actual value of the part.

Abstract: There is disclosed a method performed by a User Equipment, UE, for Hybrid Automatic Repeat Request, HARQ, retransmission of data in a multi-antenna wireless communication system. The method comprises, receiving Acknowledgement/Negative Acknowledgement, ACK/NACK, feedback information relating to data transmitted on two streams, and performing, upon rank reduction where only one stream is available for transmission, retransmission of data on a cancelled stream over the remaining stream. There is furthermore disclosed a UE configured for performing the method. A transmission method together with an arrangement for a UE is also disclosed.

Abstract: Disclosed herein, among other things, is a method performed by a user equipment (UE) for providing to a network channel station information (CSI). The method comprises: receiving from the network two measurement power offsets, a first measurement power offset and a second measurement power offset; selecting one of said two measurement power offsets; computing CSI using the selected measurement power offset; and transmitting to the network the determined CSI.

Abstract: Methods and user equipment (UE) for data demodulation. A UE comprises a receiver (Rx), a transmitter (Tx), a demodulator, a decoder, a processor, and a memory. An order message can be received by the receiver from a radio network node. The order message orders the UE to utilize both additional pilots and common pilots. In response to the receiver receiving the order message, the transmitter may return an ACK message to the radio network node. The receiver may also be configured to receive data from the radio network node. The memory stores computer program code which, when run in the processor, causes the demodulator to demodulate received data utilizing additional pilots in addition to common pilots. Furthermore, the memory and the computer program code are configured to, together with the processor, cause the demodulator to demodulate received data utilizing only common pilots when the decoder is unsuccessful in decoding received data demodulated by utilizing additional pilots in addition to common pilots.

Abstract: The present disclosure relates to radio communication and, more particularly, utilization of probing pilots (e.g. F-CPICHs) in a combined radio cell deployment. In one of its aspects, the disclosure presents an adaptive utilization of probing pilots in a combined radio cell deployment.

Abstract: A base station node communicates over a radio interface with a wireless terminal. The base station node comprises a controller which, upon basis of channel feedback received from the wireless terminal, is configured to make a precoding codebook bitmap decision regarding a precoding codebook bitmap affecting transmissions between the base station and the wireless terminal. The base station is further configured to communicate the precoding codebook bitmap decision so that the precoding codebook bitmap decision may be implemented by the wireless terminal. In example embodiments and modes the base station sends the precoding codebook bitmap decision using a bitmap decision signal to a radio network controller.

Abstract: Systems and methods related to providing spatial reuse gain as well as Multiple-Input-Multiple-Output (MIMO) gains in a combined cell of a heterogeneous cellular communications network are disclosed. In one embodiment, a method of operation of a wireless device includes receiving node-specific pilot signals from transmission nodes in a combined cell, where each node-specific pilot signal is transmitted by a different transmission node in the combined cell. The method further includes generating channel measurements based on the node-specific pilot signals. The channel measurements include a separate channel measurement for each transmission node based on the node-specific pilot signal transmitted by the transmission node. The method further includes selecting a desired combination of nodes from the subset of the transmission nodes based directly or indirectly on the channel measurements and providing an indication of the desired combination of nodes to the central control node for the combined cell.