Abstract: A random access procedure may be provided by a network node for use with a user equipment, UE, of a wireless communication system. A demodulation reference signal, DMRS, configuration may be selected from among a set of DMRS configurations based on obtained information. A DMRS transmission may be controlled during the random access procedure based on the selected DMRS configuration. The UE may receive an indication of the DMRS configuration from the network node, may select the DMRS configuration from among a set of DMRS configurations based on the received indication, and may control DMRS transmission during the random access procedure based on the selected DMRS configuration.

Abstract: Flexible physical channel configurations that support efficient transmission of discovery messages thereby enabling, among other things, SL discovery enhancement for NR. In one aspect, discovery messages are carried on either the PSCCH or the PSSCH or both.

Abstract: The present disclosure described systems and methods for providing OTT services to a UE. An exemplary OTT-providing host computer includes a transceiver, a processor, and memory collective configured to provide the OTT service by initiating transmission of user data to the UE. To transmit the user data from the host computer to the wireless device, a network node sends a first control message for assigning a PDSCH, the first control message comprising a first MCS indication as described. The network node sends to the wireless device a second control message for assigning a PDSCH, the second control message comprising a second MCS indication as described. The network node transmits the user data thereafter.

Abstract: A method for use in a wireless node configured to receive a wireless signal includes receiving, using a first set of physical resources, a first wireless signal including an indicator descriptive of a transmission power used by a second wireless node when transmitting the wireless signal on a second set of physical resources, and receiving, using the second set of physical resources, the wireless signal using an Automatic Gain Control, AGC, configuration, wherein the AGC configuration is determined based on the indicator. The disclosure further relates to a wireless node performing the method.

Abstract: A method, system and apparatus for reducing a number of bits of a physical broadcast channel (PBCH) used to broadcast a configuration of a remaining minimum system information (RMSI) data set as compared with other arrangements are disclosed. According to one aspect, a method in a network node includes determining a remaining minimum system information (RMSI) configuration based on a table of assumptions used to determine a number of bits to represent the RMSI configuration and broadcasting the RMSI configuration using the determined number of bits via a physical broadcast channel (PBCH).

Abstract: A technique for transmitting and receiving data in a radio communication from a second radio device to a first radio device is described. As to a method aspect of the technique, one or more radio resources are determined based on radio signals received at the first radio device. The one or more radio resources comprise at least one spatial stream among different spatial streams receivable at the first radio device. A status message indicative of the one or more determined radio resources is transmitted to the second radio device. The data from the second radio device is received at the first radio device on at least one radio resource depending on the one or more radio resources indicated in the transmitted status message.

Abstract: Systems and methods are described herein for scheduling multiple short Transmission Time Internal (sTTI) transmissions. In some embodiments, a method of operation of a network node of a wireless communication network for scheduling multiple sTTI transmissions comprises transmitting a control information message to a wireless device for two or more sTTI transmissions, wherein the control information message comprises scheduling information indicating two or more scheduled sTTIs for the two or more sTTI transmissions, respectively, and/or an indication of a timing for the two or more scheduled sTTIs for the two or more sTTI transmissions and/or an indication of a Demodulation Reference Signal (DMRS) configuration for the two or more scheduled sTTIs for the two or more sTTI transmissions. By using multi-sTTI scheduling, control signaling overhead is reduced.

Abstract: There is provided mechanisms for cross link interference handling. A method is performed by a network node. The network node is configured to control a radio access network node. The method comprises obtaining, through measurements, information identifying cross link interference pertaining to wireless transmission from at least one neighbouring radio access network node. The method comprises controlling the radio access network node by performing a radio resource management action based on TDD configuration information derivable from the obtained information of cross link information of cross link interference. There is provided mechanisms for cross link interference reporting.

Abstract: Systems and methods are described herein for scheduling multiple short Transmission Time Internal (sTTI) transmissions. In some embodiments, a method of operation of a network node of a wireless communication network for scheduling multiple sTTI transmissions comprises transmitting a control information message to a wireless device for two or more sTTI transmissions, wherein the control information message comprises scheduling information indicating two or more scheduled sTTIs for the two or more sTTI transmissions, respectively, and/or an indication of a timing for the two or more scheduled sTTIs for the two or more sTTI transmissions and/or an indication of a Demodulation Reference Signal (DMRS) configuration for the two or more scheduled sTTIs for the two or more sTTI transmissions. By using multi-sTTI scheduling, control signaling overhead is reduced.

Abstract: A mechanism for time domain resource allocation for downlink shared channel, in which the time domain resource is allocated according to CORESET configurations when SS/PBCH block and RMSI CORESET are multiplexed with Type 1, Type 2 or Type 3 pattern.

Abstract: A network node determines a first transmission parameter defining first time and/or frequency resources of a downlink control channel and selects between the first transmission parameter and a second transmission parameter to identify a receiver configuration for a wireless device. The second transmission parameter defines second time and/or frequency resources of the downlink control channel that are different from the first time and/or frequency resources. The network node transmits a first signal to the wireless device according to the first transmission parameter. The first signal comprises the second transmission parameter and a configuration indication indicating the receiver configuration selected by the network node for the wireless device. The network node transmits one or more second signals to the wireless device in accordance with the receiver configuration identified for the wireless device. The wireless device receives the first signal and the one or more second signals accordingly.

Abstract: A method for random access which may be performed by a network node comprises determining an association between a downlink transmission and an uplink transmission (e.g. an association between a synchronization signal and physical broadcast channel block and a random access occasion) in a two-step random access procedure, based at least in part on random access resource configuration for the two-step random access procedure (e.g. based at least in part on whether random access resource is shared by the two-step random access procedure and a four-step random access procedure). The method further comprises transmitting information indicating the association to a terminal device. Accordingly, an association between a synchronization signal and physical broadcast channel block and a random access occasion in a two-step random access procedure can be configured flexibly and efficiently.

Abstract: A method for random access which may be performed by a terminal device comprises receiving, from a network node, information indicating an association between a downlink transmission and an uplink transmission (e.g. an association between a synchronization signal and physical broadcast channel block and a shared channel occasion) in a random access procedure. The association is based at least in part on configuration of random access resource (e.g. a random access occasion) and shared channel resource (e.g. the shared channel occasion) for an uplink message (e.g. including a preamble and physical uplink shared channel data) in the random access procedure. An association between a synchronization signal and physical broadcast channel block and a shared channel occasion in a random access procedure can be configured flexibly and efficiently.

Abstract: Systems and techniques are provided for overlapped block motion compensation (OBMC). A method can include determining an OBMC mode is enabled for a current subblock of video data; for a neighboring subblock(s) adjacent to the current subblock, determining whether a first, second and third condition are met, the first condition comprising that all reference picture lists for predicting the current subblock are used to predict the neighboring subblock; the second condition comprising that identical reference pictures are used to determine motion vectors associated with the current subblock and the neighboring subblock, and the third condition comprising that a difference between motion vectors of the current subblock and the neighboring subblock do not exceed a threshold; and based on determining that the OBMC mode is enabled and the first, second, and third conditions are met, determining not to use motion information of the neighboring subblock for motion compensation of the current subblock.

Abstract: An method of decoding video data includes deriving, for a current block of video data and using decoder side intra mode derivation (DIMD), a list of intra modes using reconstructed samples of neighboring blocks; constructing, for the current block, a most probable mode (MPM) list, wherein constructing the MPM list comprises inserting, into the MPM list, at least one intra mode from the derived list of intra modes; and predicting, using a candidate selected from the constructed MPM list, the current block.

Abstract: A radio device receives first sidelink control information from a further radio device. Based on assistance information stored in the radio device and the received first sidelink control information, the radio device determines a configuration for transmission of second sidelink control information. Based on the determined configuration for transmission of the second sidelink control information, the radio device receives the second sidelink control information from the further radio device. Based on the received second sidelink control information, the radio device receives a sidelink radio transmission from the further radio device.

Abstract: A method for estimating the location of a target user equipment (UE) using a positioning system comprising a set of N positioning reference nodes (PRNs). The method includes determining, from the set of N PRNs, a particular subset of PRNs that minimizes or maximizes an objective function, wherein the objective function is a function that is adapted to map information about a given subset of the N PRNs to an error value indicating a positioning error of the target UE. The method also includes using the determined particular subset of PRNs to estimate the location of the target UE.

Abstract: A method of handling a remote interference (RI) between base stations of a time division duplex (TDD) network is provided. The method comprises or initiates a step of determining a set of radio resources for reference signals (RSs) for handling the RI. The method further comprises or initiates a step of handling the RI by at least one of transmitting and receiving one or more RSs using the radio resources of the determined set.

Abstract: Systems and methods for determining and utilizing downlink Hybrid Automatic Repeat Request (HARQ) timing when using short Transmit Time Intervals (sTTIs) are disclosed. In some embodiments, a method of operation of a wireless device in a cellular communications network comprises determining a downlink HARQ timing k for transmission of downlink HARQ feedback for a downlink transmission received in a downlink sTTI nDL based on a Time Division Duplexing (TDD) uplink/downlink configuration and transmitting, in an uplink sTTI nDL+k, downlink HARQ feedback for the downlink transmission received in the downlink sTTI nDL. In this manner, downlink HARQ timing is determined and utilized when using sTTIs.

Abstract: In wireless device-to-device, D2D, communication data are transmitted directly from a first wireless device to a second wireless device. In response to the direct transmission of data, the second wireless device transmits feedback data indicating at least one quality of the data received in the second wireless device. More precisely, according to the invention, a radio access network node controls the direct transmission of data by means of downlink control information to the first and second wireless devices, and the feedback data are received in the radio access network node. The radio access network node preferably also uses the received feedback to control at least one of the first and second wireless devices.