Abstract: In one aspect, there is a method performed by a wireless device, WD. The method includes the WD receiving a control message, the control message comprising an indication of an index value. The method further includes the WD obtaining, using the index value, a set of parameters from time domain resource allocation, TDRA, configuration information, the set of parameters comprising an aggregation factor.

Abstract: The present disclosure provides methods and apparatus for detecting when a data transmission has been preempted or punctured by detecting inconsistency in the modulation or other signal characteristic of a received signal. If an inconsistency is detected, measures can be taken to mitigate potential problems caused by the inconsistent data. In one example, the receiving device (30) may identify soft bits in a soft buffer that may have been corrupted and flush the corrupted parts from the soft buffer.

Abstract: According to some embodiments, a method performed by a network node for transmitting a physical control format indicator channel (PCFICH) comprises determining a wireless device will benefit from increased reliability of a PCFICH between the network 5 node and the wireless device; and increasing the transmission power of the PCFICH transmitted between the network node and the wireless device. In particular embodiments, determining the wireless device will benefit from increased reliability of the PCFICH comprises determining the wireless device is operating in high-reliability mode.

Abstract: There is disclosed a method of operating a terminal (10) in a wireless communication network, the method comprising receiving and/or transmitting according to a transmission time interval, TTI, configuration, the TTI configuration indicating at least one short transmitting time interval having between one or two and seven symbols of duration in a subframe. There are also disclosed related methods and devices.

Abstract: There is provided mechanisms for allocating resources to a wireless device. A method is performed by a network node. The method comprises transmitting a control message in a search space to the wireless device, the search space comprising at least two groups of Control Channel Elements (CCEs), wherein one of the groups of CCEs comprises the control message. The method comprises transmitting information to the wireless device indicating at least one of the groups of CCEs comprising resources for the wireless device.

Abstract: A method, system and apparatus are disclosed. In one or more embodiments, a network node configured to communicate with a wireless device (WD) is provided. The network node is configured to configure a wireless device with a wake-up indication, the wake-up indication configured to cause the wireless device to transition out of at least one of a low power mode or connected Discontinuous Reception (DRX) mode based on the wake-up indication. The network node is configured to signal the wake-up indication in a search space in a physical downlink control channel.

Abstract: A method, system and apparatus are disclosed. In one or more embodiments, a network node configured to communicate with a wireless device (WD) is provided. The network node is configured to, and/or comprises a radio interface and/or comprises processing circuitry configured to signal switching information for Bandwidth Part (BWP) switching in a search space that is absent scheduling information for data transmission to the wireless device.

Abstract: According to some embodiments, a network node is operable to separately schedule radio transmissions per sub-subframe (SSF). A method in the network node comprises mapping a first demodulation reference signal (DMRS) to first resource elements in a first SSF. The first resource elements are associated with a first set of antenna ports. The method includes mapping a second DMRS to second resource elements in a second SSF. The second resource elements are associated with the first set of one or more antenna ports and precoding of the second DMRS differs from a precoding of the first DMRS. The method further includes scheduling a radio transmission during the first SSF precoded in accordance with the first DMRS, and scheduling a radio transmission during the second SSF precoded in accordance with the second DMRS. In particular embodiments, a subframe may comprise two, four, or eight sub-subframes.

Abstract: A method, wireless device and network node for determining a format of downlink control information (DCI) are disclosed. According to one aspect, a network node selects a format of a DCI message from a set of at least two DCI message formats based on one or more of a service type provided to the wireless device, a characteristic of a physical downlink control channel, and a measure of channel quality. The network node signals the DCI message of the selected format to the wireless device . . . . According to another aspect, a wireless device WD determines a format of the DCI message and decodes the DCI message based on the determined format of the DCI message.

Abstract: A receiver blindly determines which parts of the soft buffer to flush by comparing the reception of a first transmission to the reception of a second transmission (i.e., a re-transmission of the first transmission). Any large differences between the first and second transmissions are identified as puncturing events. After identifying the location of the puncturing events, the receiver then evaluates different hypotheses about which one of the transmissions was punctured in the different events. For each of the hypotheses the receiver attempts to decode the received data and the receiver stops processing once decoding is successful or after the receiver has processed all of the hypotheses.

Abstract: There is disclosed a method of operating a terminal (10) in a wireless communication network, the method comprising receiving and/or transmitting according to a transmission time interval, TTI, configuration, the TTI configuration indicating at least one short transmitting time interval having between one or two and seven symbols of duration in a subframe. There are also disclosed related methods and devices.

Abstract: A method performed by a network node for handling a damaged transmission of data due to data puncturing is provided. The network node receives (201), from a User Equipment, (UE) a Negative Acknowledgment (NACK) feedback of a previous transmission of data transmitted to the UE. The network node checks (202) whether or not the data is punctured in the previous transmission corresponding to the NACK feedback. When the data is punctured in the previous transmission, the network node selects (203) a Redundancy Version (RV), for a retransmission of the data, according to characteristics of the punctured data and puncturing data. The network node then sends (204) a Puncturing Indication (PI), the selected RV and the retransmission of the data to the UE.

Abstract: In order to address problems arising due to conflicting transmissions of different services, each transport block transmitted to a receiver includes at least two code blocks and the decision by the receiver to flush and replace parts of the soft buffer and/or to add the soft bits to only some of the code blocks of a transport block is based on a combination of the multi-bit feedback transmitted by the receiver and a multi-bit indication in the DCI (Downlink Control Information) transmitted by the transmitter.

Abstract: The disclosure pertains to selecting a Transport Block Size (TBS) in a communication system. An aspect is directed to an apparatus for selecting a Transport Block Size (TBS) for a transmitter of a communication system. The communication system supports variable Transmission Time Interval (TTI) lengths regarding the number of symbols to be transmitted in one TTI. The apparatus is configured to receive first information indicative of a TTI length, receive second information indicative of a number of reference symbols included in the TTI, decode, from the first information, the TTI length, and decode, from the second information, the number of reference symbols included in the TTI.

Abstract: Methods and apparatuses are disclosed for enabling repeated transmissions. In one embodiment, a method for communicating with a wireless device includes determining a configuration for a number of repetitions of a transmission, the configuration corresponding to a Downlink Control Information (DCI) field; and communicating the configuration to the wireless device. In another embodiment, a method includes receiving a configuration for a number of repetitions of a transmission, the configuration corresponding to a Downlink Control Information (DCI) field.

Abstract: According to the present disclosure, behaviors of a Base Station (BS) and a User Equipment (UE) pertinent to Reference Signal (RS) transmissions are discussed. BS may configure RS corresponding to a set of antenna ports in two or more groups of Orthogonal Frequency Division Multiplexing (OFDM) symbols on a short Physical Downlink Sharing CHannel (sPDSCH), where subcarrier indices used for RS transmission are different between at least two groups of OFDM symbols. Then, BS may transmit the RS to UE. UE will receive RS and perform channel estimation based on the received RS.

Abstract: A network node, method and wireless device are provided. A network node for configuration of a downlink control channel for a short transmission time interval, sTTI, in a communication network is provided. The network node includes processing circuitry configured to assign a search space region to be monitored by a first wireless device in the communication network where the search space region includes a plurality of downlink control channel candidates associated with a plurality of aggregation levels. Each of the plurality of downlink control channel candidates have at least one corresponding short Control Channel Element, sCCE. The processing circuitry is further configured to transmit, to the first wireless device, a bitmap indicating at least one of the plurality of downlink control channel candidates for at least one aggregation level to monitor.

Abstract: A network node, wireless device and methods for short transmission time interval, sTTI, resource allocation in a communication network are provided. The network node includes processing circuitry configured to determine a downlink control information, DCI, message. The DCI message includes a bit field of at least two bits. Each bit corresponds to a group of at least one short Control Channel Element, sCCE, of a configured sPDCCH region. The processing circuitry is configured to transmit the DCI message to a wireless device. The bit field indicates whether the group of at least one sCCE is used for data transmission to the wireless device.

Abstract: According to some embodiments, a network node is operable to separately schedule radio transmissions per sub-subframe (SSF). A method in the network node comprises mapping a first demodulation reference signal (DMRS) to first resource elements in a first SSF. The first resource elements are associated with a first set of antenna ports. The method includes mapping a second DMRS to second resource elements in a second SSF. The second resource elements are associated with the first set of one or more antenna ports and precoding of the second DMRS differs from a precoding of the first DMRS. The method further includes scheduling a radio transmission during the first SSF precoded in accordance with the first DMRS, and scheduling a radio transmission during the second SSF precoded in accordance with the second DMRS. In particular embodiments, a subframe may comprise two, four, or eight sub-subframes.

Abstract: A method in a network node for supporting a predetermined set of aggregation levels for configuration of a downlink control channel for one of a slot Transmission Time Interval (TTI) and a subslot TTI. The method includes determining an aggregation level to be monitored by a wireless device (WD) in a communication network; and determining a number of downlink control channel candidates for the WD to monitor within each of the one of the slot TTI and the subslot TTI, the number of downlink control channel candidates based upon the aggregation level. A wireless device and corresponding method for supporting a predetermined set of aggregation levels and for implementing at least one aggregation level and at least one downlink control channel candidate for configuration of a downlink control channel for one of a slot TTI and a subslot TTI are also provided.