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: 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: 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: A method in a network node comprises providing to a user equipment a dedicated physical control channel (DPCCH), the DPCCH having an associated first fractional dedicated physical channel (F-DPCH) for conveying transmit power control commands to the user equipment for power controlling the DPCCH, and providing to the user equipment a secondary dedicated physical control channel (S-DPCCH), the S-DPCCH comprising an uplink control channel for communicating transmit power control commands, the S-DPCCH having an associated second F-DPCH for conveying transmit power control commands to the user equipment for power controlling the S-DPCCH. The method comprises receiving, from the user equipment, a downlink transmit power control command, the downlink transmit power control command carried on the S-DPCCH; and controlling a transmit power of the second F-DPCH associated with the S-DPCCH based on the downlink transmit power control command carried on the S-DPCCH.

Abstract: A network node of a wireless communication network serves a wireless device that is transmitting one or more uplink channels to each of a serving cell and at least one non-serving cell. Inner-loop power control, ILPC, commands are sent (420) to the wireless device in such a way that only ILPC commands transmitted by the serving cell affect the power of one or more control channels transmitted by the wireless device to the serving cell. In addition, a power offset for a data channel transmitted by the wireless device to the at least one non-serving cell is adjusted (430), so as to compensate for an uplink-downlink power imbalance among the serving cell and the at least one non-serving cell.

Abstract: It is presented a method for controlling uplink multiple-input-multiple-output, MIMO. The method is performed in a network node and comprises the steps of: determining an inter-stream interference between two uplink streams in MIMO, Multiple Inputs Multiple Outputs, transmission; and controlling a selection of E-TFC, Enhanced dedicated transport channel Transport Format Combination, in response to the determined interference.

Abstract: A method in a network node (115A-C, 120, 130) comprises providing (704) to a user equipment (UE) (110A-C) a dedicated physical control channel (DPCCH), the DPCCH having an associated first fractional dedicated physical channel (F-DPCH) for conveying transmit power control (TPC) commands to the UE for power controlling the DPCCH, the first F-DPCH having a first allocated slot format; providing (708) to the UE a dedicated physical control channel2 (DPCCH2) (502), the DPCCH2 comprising an uplink control channel power controlled by the network node for communicating TPC commands to the network node, the DPCCH2 having an associated second F-DPCH for conveying transmit power control commands to the UE for power controlling the DPCCH2, the second F-DPCH having a second allocated slot format different from the first allocated slot format; and communicating (712) to the UE an uplink TPC command on the second F-DPCH having the second allocated slot format.

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: A method in a network node for enhancing a channel estimate based on a Dedicated Physical Control Channel, DPCCH, between a user node and the network node is provided. The DPCCH has a first power. The network node receives (501) the DPCCH. The first power of the DPCCH is boosted with additional power, resulting in a second power. The network node then obtains (502) a channel estimate based on the DPCCH comprising the second power. As soon as said channel estimate is obtained, the network node removes (503) the additional power from the DPCCH based channel estimate.

Abstract: Methods may be provided to operate wireless terminal in wireless communication networks providing multiple-input-multiple-output (MIMO) downlink communications from a plurality of base station sector antenna arrays using a codebook of precoding vectors. Such methods may include receiving multi-point MIMO downlink communications from the wireless communication network. When receiving the multi-point MIMO downlink communications from the wireless communication network, a precoding vector may be selected from a subset of the precoding vectors of the codebook for the multi-point MIMO downlink communications.

Abstract: A method in a network node comprises providing to a user equipment a dedicated physical control channel (DPCCH), the DPCCH having an associated first fractional dedicated physical channel (F-DPCH) for conveying transmit power control commands to the user equipment for power controlling the DPCCH, and providing to the user equipment a secondary dedicated physical control channel (S-DPCCH), the S-DPCCH comprising an uplink control channel for communicating transmit power control commands, the S-DPCCH having an associated second F-DPCH for conveying transmit power control commands to the user equipment for power controlling the S-DPCCH. The method comprises receiving, from the user equipment, a downlink transmit power control command, the downlink transmit power control command carried on the S-DPCCH; and controlling a transmit power of the second F-DPCH associated with the S-DPCCH based on the downlink transmit power control command carried on the S-DPCCH.

Abstract: A method in a network node comprises providing to a user equipment a dedicated physical control channel (DPCCH), the DPCCH having an associated first fractional dedicated physical channel (F-DPCH) for conveying transmit power control commands to the user equipment for power controlling the DPCCH, and providing to the user equipment a secondary dedicated physical control channel (S-DPCCH), the S-DPCCH comprising an uplink control channel for communicating transmit power control commands, the S-DPCCH having an associated second F-DPCH for conveying transmit power control commands to the user equipment for power controlling the S-DPCCH. The method comprises receiving, from the user equipment, a downlink transmit power control command, the downlink transmit power control command carried on the S-DPCCH; and controlling a transmit power of the second F-DPCH associated with the S-DPCCH based on the downlink transmit power control command carried on the S-DPCCH.

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: A method that is implemented by a base station to decode a high speed dedicated physical control channel (HS-DPCCH) using a preamble and postamble of a hybrid automatic repeat request (HARQ) message while maintaining a fixed false alarm probability of interpreting a discontinuous transmission (DTX) as a HARQ acknowledgement (ACK) or HARQ negative acknowledgement (NACK). The method includes a set of steps, including receiving a signal from a user equipment (UE). The signal is despread using a G-RAKE demodulator. The despread signal is combined to produce a combined symbol estimate vector x including a preamble and postamble of the HARQ message. The combined symbol estimate vector x is checked to determine whether the signal includes a DTX, HARQ ACK or HARQ NACK, and then the DTX, HARQ ACK or HARQ NACK is output.

Abstract: A method in a network node (115A-C, 120, 130) comprises providing (704) to a user equipment (UE) (110A-C) a dedicated physical control channel (DPCCH), the DPCCH having an associated first fractional dedicated physical channel (F-DPCH) for conveying transmit power control (TPC) commands to the UE for power controlling the DPCCH, the first F-DPCH having a first allocated slot format; providing (708) to the UE a dedicated physical control channel2 (DPCCH2) (502), the DPCCH2 comprising an uplink control channel power controlled by the network node for communicating TPC commands to the network node, the DPCCH2 having an associated second F-DPCH for conveying transmit power control commands to the UE for power controlling the DPCCH2, the second F-DPCH having a second allocated slot format different from the first allocated slot format; and communicating (712) to the UE an uplink TPC command on the second F-DPCH having the second allocated slot format.

Abstract: A method of communicating with a wireless terminal may include providing first information responsive to receiving first and second multiple-input-multiple-output (MIMO) data streams from the wireless terminal through a first antenna array of a first sector during a first transmission time interval. Second information may be provided responsive to receiving the first and second MIMO data streams from the wireless terminal through a second antenna array of a second sector during the first transmission time interval with the first and second sectors being different and the first and second antenna arrays being different. An offset value may be generated responsive to the first information and/or the second information, with the offset value defining a difference between the first and second MIMO data streams for a second transmission time interval, and the offset value may be transmitted to the wireless terminal.

Abstract: Embodiments herein relate to a method in a base station (12) for providing feedback to a user equipment (14) for transmissions of a secondary stream out of a primary and a secondary stream of the user equipment (14) in an uplink Multiple Input Multiple Output mode. The base station (12) transmits to the user equipment (14), a preferred transmission rank and an offset for the secondary stream in a channel, wherein the offset is to be used by the user equipment (14) when deciding transport block size of the secondary stream and the preferred transmission rank is to be used by the user equipment (14) when deciding a transmission rank.

Abstract: It is presented a method for controlling multiple input multiple output, MIMO, pilot channel boosting. The method is performed in a user equipment, UE, capable of MIMO transmissions using a primary and a secondary stream. The method comprising the steps of: determining a rank used for uplink transmissions from the UE; and determining a boosting parameter affecting power boosting of an Enhanced Dedicated Physical Control Channel, E-DPCCH, and a Secondary Dedicated Physical Control Channel, S-DPCCH, based on the rank. A corresponding UE, base station and associated method are also presented.

Abstract: Embodiments herein relate to a method in a network node (12,15) for managing transmit power of a user equipment (10) in a cellular network (1); wherein the network node (12,15) is comprised in the cellular network (1) and serves the user equipment (10). The network node (12,15) increases a power of a control channel of the user equipment (10). The network node (12,15) further limits a power increase of a data channel to a level by reducing a power of a serving grant of the user equipment (10) an amount, which amount corresponds to the increased power of the control channel. The network node (12,15) also reduces a reference value of the data channel for maintaining a transport block size of the data channel, which reference value determines mapping from the serving grant to the transport block size.

Abstract: A method in a network node for estimating a channel from a user node to the network node is provided. The network node receives first pilots. The network node receives (502) additional pilots from the user node. The network node estimates (503) the channel based on the additional pilots. The additional pilots are any one out of: pilots in an existing channel, modified to create space for the additional pilots, and an existing mechanism modified to be used as the additional pilots.