Abstract: Methods for the transmission of SCI messages in sidelink communications for the reservation of resources. The modulation and coding scheme of a second stage SCI may be indicated in the first stage SCI.

Abstract: Procedures, methods, apparatuses, devices, and computer program products for determining sidelink transmission power.

Abstract: Methods for the transmission of SCI messages in sidelink communications for the reservation of resources. The modulation and coding scheme of a second stage SCI may be indicated in the first stage SCI.

Abstract: Methods for pre-emption of transmission resources in sidelink communications in a cellular network. A reservation message for resources which collide with previously-reserved resources serves as a pre-emption indicator.

Abstract: Various techniques and processes for transmission of sidelink control information transmission, and in particular feedback transmissions are disclosed. Methods and processes for dynamic grant and periodic resource allocations are discussed. A method for sidelink feedback transmission performed at a base station includes at the base station, creating an independent physical uplink control channel (PUCCH) group for sidelink feedback transmissions from a sidelink user equipment (UE) to the base station, transmitting a downlink control information (DCI) to the sidelink UE scheduling a sidelink transmission and configuring the PUCCH group for transmission of sidelink feedback to the base station, and receiving a sidelink feedback from the sidelink UE on resources which are part of the PUCCH group.

Abstract: Procedures, methods, architectures, apparatuses, systems, devices, and computer program products are described that may be implemented in a wireless transmit/receive unit (WTRU) for sidelink (SL) communication. In one representative method, the WTRU estimates a primary direction for a SL transmission. The first WTRU derives a paired direction associated with the primary direction. SL control information (SCI) sensing in the primary and paired directions may be performed to detect SL transmissions and/or reservations from other WTRUs. The WTRU may select a SL resource using any sensed SCI in the primary and paired directions. The WTRU may proceed to transmit SL control and data over the selected SL resource, such as in a SL slot. For example, the transmission of SL control information may include SCI transmission in the primary and paired directions in the same symbols of a slot.

Abstract: There is provided a method of determining PSSCH feedback resources performed at a UE, wherein the PSSCH feedback (PSFCH) resource has a periodicity N defined as a number of slots. The method comprises counting a number of sub-channels, C, of PSSCH in the period N, wherein each sub-channel, c, is associated with a PSFCH resource; counting a number of PSFCH resources, R, in the period N; indexing the sub-channels, c, based on time; and after indexing the sub-channels, c, based on time, indexing the sub-channels, c, based on frequency.

Abstract: There is provided a method of determining PSSCH feedback resources performed at a UE, wherein the PSSCH feedback (PSFCH) resource has a periodicity N defined as a number of slots. The method comprises counting a number of sub-channels, C, of PSSCH in the period N, wherein each sub-channel, c, is associated with a PSFCH resource; counting a number of PSFCH resources, R, in the period N; indexing the sub-channels, c, based on time; and after indexing the sub-channels, c, based on time, indexing the sub-channels, c, based on frequency.

Abstract: There is provided a method of determining PSSCH feedback resources performed at a UE, wherein the PSSCH feedback (PSFCH) resource has a periodicity N defined as a number of slots. The method comprises counting a number of sub-channels, C, of PSSCH in the period N, wherein each sub-channel, c, is associated with a PSFCH resource; counting a number of PSFCH resources, R, in the period N; indexing the sub-channels, c, based on time; and after indexing the sub-channels, c, based on time, indexing the sub-channels, c, based on frequency.

Abstract: A method performed by a transmitting, Tx, WTRU performing sidelink, SL, communications with a receiving, Rx, WTRU, includes sending a periodic SL resource allocation request to a base station, BS, including directional information comprising a direction of transmission to the Rx WTRU, receiving configuration information of multiple sets of periodic time-frequency, T-F, resources for SL communication with the Rx WTRU, the configuration information including an indication of a first set of the multiple sets of T-F resources to use for SL communication with the Rx WTRU, and transmitting on SL to the Rx WTRU using the first set of T-F resources using the direction of transmission to the Rx WTRU.

Abstract: There is provided a method of determining PSSCH feedback resources performed at a UE, wherein the PSSCH feedback (PSFCH) resource has a periodicity N defined as a number of slots. The method comprises counting a number of sub-channels, C, of PSSCH in the period N, wherein each sub-channel, c, is associated with a PSFCH resource; counting a number of PSFCH resources, R, in the period N; indexing the sub-channels, c, based on time; and after indexing the sub-channels, c, based on time, indexing the sub-channels, c, based on frequency.

Abstract: Methods and systems for management of uplink HARQ processes where fewer than a defined number of repetitions of uplink data are transmitted on configured grant resources. The applied HARQ processes may be varied dependent on the number of repetitions transmitted and dependent on the reception status at the base station.

Abstract: Various techniques and processes for transmission of sidelink control information transmission, and in particular feedback transmission are disclosed. Methods and processes for dynamic grant and periodic resource allocations are discussed.

Abstract: Methods for transmitting CSI and/or position information between nodes in a network. In particular processes and systems for sidelink groupcast transmissions in a cellular network.

Abstract: Methods of data communication in a cellular communications network based on an unlicensed wideband carrier, the method performed by a base station of the cellular communications network, the base station being in communication with one or more mobile devices. The methods comprise the steps of determining a set of used sub-bands of the plurality of sub-bands available for data transmission, generating used sub-band control information pertaining to a plurality of sub-bands in the wideband carrier based on the set of used sub-bands, and providing the used sub-band control information to the one or more mobile devices.

Abstract: A method of configuring a UE operating in a cellular communications system for discontinuous reception includes the steps of receiving or configuring a plurality of discontinuous reception configurations at the UE, selecting at least one of the discontinuous reception configurations for use by the UE, and operating the UE according to the at least one selected discontinuous reception configuration.

Abstract: A method for selecting resources for a transmission between a first UE and a second UE is disclosed. A set of coordination resources is determined at the first UE. The set of coordination resources includes coordination information which may indicate whether the set of coordination resources are preferred resources and/or non-preferred resources. The set of coordination resources is sent to the second UE, and the second UE takes the coordination information into account in the resource selection for its own transmission. For example, the resource selection by the second UE may be based on both the sensing result of the second UE and the received coordination information from the first UE. Alternatively, there source selection by the second UE may be based exclusively or non-exclusively on the received coordination information from the first UE.

Abstract: A radio station performs an omni-directional or directional channel access sensing process prior to transmitting, and prior to changing beam direction during a channel occupancy time performs a directional channel access sensing process in the direction of the new beam.

Abstract: Methods to improve reselection of resources following pre-emption of reserved resources for sidelink communications. Reselection may be performed using an adjusted priority to reduce the prospects of the reselected transmission also being pre-empted. Alternatively the threshold used to decide whether resources have been pre-empted is adjusted if the resources are reselected rather than an initial selection.

Abstract: Methods of allocating resources for Channel State Information, CSI, transmission, comprising the steps of receiving, from a transmitter User Equipment, a request for resources for transmission of a Channel State Information Reference Signal, CSI-RS; determining, in response to receiving the request for transmission of a CSI-RS, a first resource allocation for CSI-RS transmission; determining, in response to receiving the request for transmission of a CSI-RS, a second resource allocation for a CSI report transmission; and transmitting, to the transmitter User Equipment, the first resource allocation and the second resource allocation.