Abstract: A method comprises defining (401), in a network node (e NB), scheduled downlink carriers from a list of configured downlink carriers. The network node (e NB) defines (401) a downlink assignment index of the scheduled carrier having at least the lowest carrier index from the list of configured carriers, based on a total number of scheduled carriers. The network node (e NB) defines (401) the downlink assignment index for each other scheduled carrier having a higher carrier index from the list of configured carriers. The network node (e NB) transmits (402) to a terminal device (UE) a control message corresponding to each scheduled carrier, the control message indicating a downlink assignment scheduling a physical downlink shared channel, and comprising the defined downlink assignment index. The network node (e NB) receives (405) from the terminal device (UE), uplink control signalling indicating HARQ-ACKs related to physical downlink shared channels corresponding to the scheduled carriers.

Abstract: Various communication systems may benefit from the appropriate handling of multiple competing transmissions. For example, high or ultra reliable low latency communication systems may benefit from cycling hybrid automatic repeat request transmission processes for grant-less uplink transmission. A method can include identifying or predicting a plurality of pending data transmissions. The method can also include deterministically cycling the pending data transmissions among a plurality of available resources.

Abstract: There is provided a method, comprising: setting, by a radio device, length for a channel reservation window such that the channel reservation window comprises a plurality of subframes; dividing the channel reservation window at least into a downlink part and an uplink part, wherein the downlink part comprises at least one or more subframes of the plurality of subframes and the uplink part comprises at least one or more other subframes of the plurality of subframes; determine a timing offset between the start of the downlink part and the start of the uplink part, wherein the timing offset is based at least partly on applied timing advance; and defining timings, within the channel reservation window, for at least one of a downlink clear channel assessment-process and an uplink clear channel assessment-process at least partly on the basis of the timing offset.

Abstract: A technique comprising: controlling downlink transmission of an uplink grant for one or more uplink data transmissions by a communication device, wherein said uplink grant identifies one combination from a set of predetermined combinations of one or more transmission time intervals and one or more uplink reference signal transmissions, including at least one combination of two or more transmission time intervals and one or more uplink reference signal transmissions; and using said one or more uplink reference signal transmissions of the identified combination to assist the recovery of data from the one or more uplink radio data transmissions by said communication device in the one or more transmission time intervals of the identified combination.

Abstract: Systems, methods, apparatuses, and computer program products for dynamic transmit diversity fallback are provided. One method may include configuring a user equipment with a maximum number of multiple-input multiple-output (MIMO) layers used for transmission mode 9 or transmission mode 10 scheduling, and performing, by a network node, at least one of transmission mode 9 or transmission mode 10 scheduling. The configuring may include indicating to the user equipment to use a modified mapping table providing transmit diversity fallback for the at least one of transmission mode 9 or transmission mode 10 scheduling.

Abstract: The present invention addresses a method, apparatus and computer program product for improving slow DCI reliability. Thereby, with regard to a subframe including slow downlink control information, an indication element indicating that the slow downlink control information transmitted in this subframe has the same content as slow downlink control information in the previous subframe or one of the past subframes is generated, and the indication element is transmitted in the same subframe and the same downlink control channel candidate as the slow downlink control information to a user equipment.

Abstract: A radio network sends to a user equipment (UE) an indication that reduced processing time associated with a reduced search space is operational for the UE. The reduced search space is a sub-set of a larger search space associated with a non-reduced processing time. The network sends to the UE within the reduced search space downlink control information (DCI) in subframe N that allocates to the UE a radio resource. If the allocated radio resource is uplink, the network receives uplink data from the UE on the allocated radio resource in a subframe spaced from the subframe N an amount of the reduced processing time (N+reduced processing time); and/or if the allocated radio resource is downlink the network sends downlink data to the UE on the allocated radio resource in subframe N and receives from the UE in reply feedback (ACK/NACK) signaling in a subframe N+reduced processing time.

Abstract: Apparatuses and methods for transmission power control are disclosed. A given transmission resource and a first transmission power are determined (202, 204) for transmission. Prior to transmitting on the given transmission resource it is determined (206) whether the resource is occupied or unoccupied. Upon detecting that the resource is occupied, a second, reduced transmission power is determined (210) such that a transmission using the second, reduced transmission power would not render the resource as occupied. The determination of the second transmission power is based at least partially on a predetermined maximum transmission power reduction value. Transmission (212) is done utilizing the given transmission resource using the second transmission power according to the determination.

Abstract: When triggering a user equipment (UE) to send a reference signal (SRS) the network configures the UE with multiple parameter sets, each having a timing indication. The UE's resource allocation grants multiple uplink (UL) subframes and identifies/selects one of those parameter sets. The timing indication of the selected set identifies one of the granted UL subframes, in one embodiment by counting only among the allocated/granted shortened UL subframes. This triggers the UE to send SRS in that identified shortened UL subframe. In one embodiment if no UL subframes in the grant are shortened this triggers the UE to send SRS in a subframe previous to all the allocated/granted multiple UL subframes. The same mechanism can be used to trigger feedback reports such as aperiodic channel state information or block ACK/NACK reports, where the different UL signaling being triggered is requested in the network's resource allocation to the UE.

Abstract: In accordance with an example embodiment of the present invention, a method, comprising: receiving an information regarding one or more uplink grants of an assigned component carrier to use to transmit data; determining a set of uplink component carriers of licensed-assisted uplink component carriers that are considered as conditional uplink component carriers to use to transmit data; determining whether the assigned component carrier is available to transmit the data; based on determining that the assigned component carrier is not available to transmit the data, identifying a component carrier of the at least one conditional uplink component carrier of the licensed-assisted uplink component carriers that is available to transmit the data; and transmitting the data on the identified available component carrier of the licensed-assisted uplink component carriers, is disclosed.

Abstract: An aspect of this invention is a definition of a set of reused channel state information reference signal (CSI-RS) resources among transmission points, which can be lower power nodes, for intra-cell coordinated multi-point (CoMP) operation. Separate CSI-RS resources are defined for each transmission point for sporadic separate measurements to be made by user equipment. The sporadic measurements may be implemented with low additional overhead, and are used for generating potentially simplified CSI feedback to an evolved NodeB that enables adapting shared channel reuse and also potentially making related channel quality indicator (CQI) compensation.

Abstract: A method including receiving information on a first channel on preconfigured channel elements in a transmission time interval of a wireless communication system, wherein the information on the first channel includes first system information and downlink control information related to a transmission of second system information on a second channel in the transmission time interval. The method may further include receiving the second system information based on the downlink control information.

Abstract: When triggering a user equipment (UE) to send a reference signal (SRS) the network configures the UE with multiple parameter sets, each having a timing indication. The UE's resource allocation grants multiple uplink (UL) subframes and identifies/selects one of those parameter sets. The timing indication of the selected set identifies one of the granted UL subframes, in one embodiment by counting only among the allocated/granted shortened UL subframes. This triggers the UE to send SRS in that identified shortened UL subframe. In one embodiment if no UL subframes in the grant are shortened this triggers the UE to send SRS in a subframe previous to an the allocated/granted multiple UL subframes. The same mechanism can be used to trigger feedback reports such as aperiodic channel state information or block ACK/NACK reports, where the different UL signaling being triggered is requested in the network's resource allocation to the UE.

Abstract: Systems, methods, apparatuses, and computer program products for restricting UE autonomous transmissions are provided.

Abstract: Various communication systems may benefit from the appropriate handling of multiple competing transmissions. For example, high or ultra reliable low latency communication systems may benefit from cycling hybrid automatic repeat request transmission processes for grant-less uplink transmission. A method can include identifying or predicting a plurality of pending data transmissions. The method can also include deterministically cycling the pending data transmissions among a plurality of available resources.

Abstract: A method and apparatus may include performing, by a network node, a short Physical Downlink Shared Channel scheduling decision for a user equipment. The method can also include determining a short Physical Downlink Control Channel candidate for carrying a downlink assignment to the user equipment. The method can also include determining a short Physical Downlink Control Channel candidate set. The short Physical Downlink Control Channel candidate set is specific to the user equipment. The method can also include determining a plurality of logical signaling groups based on the determined candidate set. The method can also include determining which groups of the plurality of logical signaling groups that the network node will perform short Physical Downlink Shared Channel rate matching. The method can also include determining the short Physical Downlink Shared Channel resource mapping and creation of the short Physical Downlink Shared Channel.

Abstract: In scheduling of downlink multipoint transmissions at least one resource element is left free of the downlink channel. Data representing interference is then inserted in said at least one resource element for use in interference measurements.

Abstract: A method including receiving at a wireless communication device first and second scheduling information indicative of attributes related to a data transmission. The first scheduling information including information indicative of contents attributes of the data transmission, and the subsequently received second scheduling information being indicative of time attributes of the data transmission.

Abstract: There is provided a method including receiving information at a user device capable of operating using carrier aggregation, said information including an indication of a first carrier and at least one second carrier to be used for a signalling procedure, causing transmission from the user device of a first signal of the signalling procedure using at least one of the first carrier and the at least one second carrier and monitoring the first carrier and the at least one second carrier for transmission of a second signal of the signalling procedure from an access point.

Abstract: An example technique may include transmitting, by a base station via a component carrier in a licensed band, control information including a resource allocation that identifies time-frequency resources for periodical transmission opportunities to be used for the conditional transmission of discovery reference signals via a secondary component carrier in an unlicensed band, determining, prior to each transmission opportunity, whether the secondary component carrier in the unlicensed band is unoccupied, and transmitting, if the secondary component carrier in the unlicensed band is unoccupied, the discovery reference signals via the secondary component carrier in the unlicensed band using the identified time-frequency resources to one or more user devices.