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 and system for synchronized switching of a Transmission Time Interval (TTI) between at least two different TTI length values. A UE transmitting a power report, where a control node or a Base Station evaluates the report and decides, based on the evaluation, to order the UE to switch to a different TTI length. The order message comprises the number of TTIs after which a TTI switch has to occur, composed a.o. based on radio environment condition. The UE receives a TTI switch order message and replies with a single message to its serving BS with a message to switch the TTI in a synchronous way.

Abstract: A network node (100), a wireless device (102) and methods therein, for controlling uplink transmission from the wireless device (102), e.g. in a time division multiplexing scheme. The network node (100) signals (1:2) an Absolute Grant Scope, AGS, bit to the wireless device (102), wherein the AGS bit indicates one of: the wireless device (102) is granted for uplink transmission (204) during a single Transmit Time Interval, TTI, and the wireless device (102) is granted for uplink transmission (206) until a next grant is signalled to the wireless device (102).

Abstract: A method and system for synchronized switching of a Transmission Time Interval (TTI) between at least two different TTI length values. A UE 100 transmitting a power report, where a control node 150 or a Base Station 110A evaluates the report and decides, based on the evaluation to order the UE to switch to a different TTI length. The order message comprises the number of TTIs after which a TTI switch has to occur, composed a.o. based on radio environment condition. The UE receives a TTI switch order message and replies with a single message to its serving BS with a message to switch the TTI in a synchronous way.

Abstract: The present invention relates to granting time intervals for transmitting a control signal burst and, more particularly, to methods and devices for granting Dedicated Physical Control Channel (DPCCH) bursts for Wideband Code Division Multiple Access (WCDMA). A base station determines whether a predetermined condition for transmitting a grant signal is satisfied and, if so, determines a schedule for receiving a control signal burst from a mobile device and transmits, in accordance with the determined schedule, the grant signal to at least said mobile device. Correspondingly, a mobile device transmits a report to a base station causing it to determine, in accordance with the report, a schedule for transmitting a control signal burst. Then the mobile device receives grant signals in accordance with the determined schedule and transmits a control signal burst in accordance with the grant signal.

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: A method and system for synchronized switching of a Transmission Time Interval (TTI) between at least two different TTI length values. A UE 100 transmitting a power report, where a control node 150 or a Base Station 110A evaluates the report and decides, based on the evaluation to order the UE to switch to a different TTI length. The order message comprises the number of TTIs after which a TTI switch has to occur, composed a.o. based on radio environment condition. The UE receives a TTI switch order message and replies with a single message to its serving BS with a message to switch the TTI in a synchronous way.

Abstract: A method and controlling node (500) to control a signal combining operation performed on uplink radio signals transmitted from a User Equipment, UE, in a combined cell served by multiple radio nodes (502). Signal quality information (SQ) is received from the UE indicating a signal quality measured by the UE on a node-specific probing pilot signal (PS1-PS4) transmitted from each of the multiple radio nodes, and a subset (RN2-RN3) of the multiple radio nodes is selected based on the received channel quality information. The signal combining operation is then performing (204) on the uplink radio signals received by the selected subset of the multiple radio nodes. Thereby, the performance of the signal combining operation can be improved.

Abstract: A method and system for synchronized switching of a Transmission Time Interval, TTI, between at least two different TTI length values. A UE 100 transmitting a power report, where a control node 150 or a Base Station 110A evaluates the report and decides, based on the evaluation to order the UE to switch to a different TTI length. The order message comprises the number of TTIs after which a TTI switch has to occur, composed a.o. based on radio environment condition. The UE receives a TTI switch order message and replies with a single message to its serving BS with a message to switch the TTI in a synchronous way.

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.

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: The present disclosure relates to a method and user equipment, UE, in a wireless communication network of performing power scaling on uplink transmission to a receiving radio access node, RAN. In particular, the disclosure relates to a method and user equipment for power scaling on uplink transmissions on a multi-radio access bearer, multi-RAB, wherein a Dedicated Physical Data Channel, DPDCH, and enhanced Data Channels, E-DCHs are configured for uplink transmission from the UE to the receiving RAN. The method comprises determining a total UE transmit power exceeding a predetermined maximum power limit value. The total UE transmit power is reduced to the predetermined maximum power limit value by reducing one or more E-DPDCH gain factors by an equal scaling factor. When a predetermined minimum E-DPDCH gain factor, ‘smallest quantised ?ed,k value’, is reached for all E-DPDCH gain factors ?ed,k, and DTX is applied for all E-DPDCHs, the method comprises applying DTX on E-DPCCH.

Abstract: A network node (100), a wireless device (102) and methods therein, for controlling uplink transmission from the wireless device (102), e.g. in a time division multiplexing scheme. The network node (100) signals (1:2) an Absolute Grant Scope, AGS, bit to the wireless device (102), wherein the AGS bit indicates one of: the wireless device (102) is granted for uplink transmission (204) during a single Transmit Time Interval, TTI, and the wireless device (102) is granted for uplink transmission (206) until a next grant is signalled to the wireless device (102).

Abstract: A method and system for setting an initial dedicated physical control channel (DPCCH) power of a secondary carrier after a transmission gap are disclosed. According to one aspect, a method includes determining a filtered DPCCH power of first carrier. The method further includes determining a power offset. The method also includes calculating the initial DPCCH power of the secondary carrier by adding the determined filtered DPCCH power of the first carrier to the determined power offset.

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: A network node (100), a wireless device (102) and methods therein, for controlling uplink transmission from the wireless device (102), e.g. in a time division multiplexing scheme. The network node (100) signals (1:2) an Absolute Grant Scope, AGS, bit to the wireless device (102), wherein the AGS bit indicates one of: the wireless device (102) is granted for uplink transmission (204) during a single Transmit Time Interval, TTI, and the wireless device (102) is granted for uplink transmission (206) until a next grant is signalled to the wireless device (102).

Abstract: A method and system for setting an initial dedicated physical control channel (DPCCH) power of a secondary carrier after a transmission gap are disclosed. According to one aspect, a method includes determining a filtered DPCCH power of first carrier. The method further includes determining a power offset. The method also includes calculating the initial DPCCH power of the secondary carrier by adding the determined filtered DPCCH power of the first carrier to the determined power offset.