Abstract: Described are systems and methods for sidelink (SL) hybrid automatic repeat request (HARQ) feedback schemes. A wireless transmit/receive unit (WTRU) may receive information that indicates a plurality of SL transmission configuration indications (TCIs), wherein the SL TCIs include at least a SL primary TCI (P-TCI) and a SL secondary TCI (S-TCI), and information that indicates a plurality of hybrid automatic repeat request (HARQ) configurations. The WTRU may determine a channel uncertainty and determine, based on a comparison of the channel uncertainty to at least one threshold value, a combination of a set of SL TCIs and a HARQ configuration to use for communicating via a sidelink feedback channel. The WTRU may send a transmission, via a sidelink feedback channel, using the determined set of SL TCIs and using the determined HARQ configuration.

Abstract: A method and configurations are discussed relative to a wireless transmit/receive unit (WTRU) in the form of a multi subscriber identity module (MUSIM). The paging information for the WTRU may be optimized for power consumption. The paging information may be modified to provide one or more of a maximum deep sleeping time duration requirement, a minimum number of power state transitions, and minimum power penalty associated with power state transitions. The modified paging information may set a paging occasion offset windows and a time direction indication associated therewith.

Abstract: Mechanisms for reducing the reporting overhead corresponding to spatial domain (SD) basis reporting facilitate reporting of different beams (SD bases) for the different panels, with reduced reporting overhead, compared to independent per panel reporting. For multi-panel precoder reporting, a WTRU may report the SD basis (beam) for a reference panel (reference CSI-RS). For non-reference panels (non-reference CSI-RS), the WTRU may report beam offsets in relation to the beam of the reference panel. The WTRU may determine and report beam offset parameters, e.g., step size and range, based on measurements, e.g., distance. For multi-beam reporting, the multiple beam offsets for a non-reference panel may be associated with the multiple beams by the ordinal positions of the beam offsets in the CSI report.

Abstract: Procedures, methods, architectures, apparatuses, systems, devices, and computer program products for wireless transmit/receive unit (WTRU) controlled layer 1/layer 2 triggered mobility (LTM). For example, the WTRU may receive information indicating a set of layer 1/layer 2 triggered mobility (LTM) configurations. The set of LTM configurations may be associated with and/or may include a set of events for triggering LTM switching to a set of candidate cells (and/or beams). The WTRU may perform a first set of non-radio measurements to determine a zone. A subset of the LTM configurations may be activated based on the determined zone. The WTRU may perform an LTM switch to one of the candidate cells based on one of the activated LTM configurations. The activated LTM configuration used for the LTM switch may be associated with an event that is triggered (e.g., jointly) using a second set of radio and non-radio measurements.

Abstract: In an embodiment, a method implemented in a wireless transmit/receive unit, comprises: transmitting, to the network, a first message comprising information on non-radio measurement capabilities; receiving, from the network, a second message comprising information for configuration to determine zone location of the WTRU; receiving, from the network, a third message comprising a plurality of mobility configurations and information indicating non-radio measurement quantities; determining one or more changes in non-radio measurement quantities; determining WTRU zone location based on non-radio measurements from the non-radio measurement quantities and based on configuration to determined zone location; transmitting, to the network, the determined zone location; receiving, from the network, a command message comprising information to perform a cell switch to a target cell associated with one configuration of the plurality of configurations; and performing the cell switch to the target cell based on the command mes

Abstract: Procedures, methods, architectures, apparatuses, systems, devices, and computer program products for network controlled L1/L2 triggered mobility (LTM) procedures are provided. An example method includes sending information indicating a capability of measuring radio quantities and non-radio quantities associated with measurement of one or more rotational or translational motions; receiving configuration information indicating zone configuration for determining a zone from radio and/or non-radio measurements and/or a set of mobility configurations associated with the radio and/or non-radio measurements and a set of joint events; estimating, based on the configuration information, one or more radio and/or non-radio measurements; and transmitting, based on a joint event of the set of joint events being triggered, a measurement report indicating the radio and/or non-radio measurements and zone information derived from the estimated non-radio measurements.

Abstract: Systems, methods, and instrumentalities are described herein for idle mode mobility in an ultra-low power (ULP) system. Idle mode mobility in a ULP system may support energy efficient downlink signaling. An association may be identified between a Uu cell and a ULP cell. Switching between Uu cells may limit power savings gains from ULP receivers. Enabling switching between ULP cells without switching between Uu cells may help maintain the power savings gains from ULP receivers. A wireless transmit/receive unit may be configured to perform ULP cell reselection, for example, without triggering Uu cell reselection (e.g., to maintain power savings gains).

Abstract: Method, apparatus and systems are disclosed that may be implemented in a wireless transmit/receive unit (WTRU) and/or a wireless access point associated with the WTRU. In one representative method, the WTRU may be in an inactive mode or an idle mode prior to a paging occasion (PO). The WTRU may be configured to detect transmission of a number of synchronization signal blocks or reference signals associated with early paging indication (EPI) downlink control information (DCI). Based on the detected transmissions, the WTRU may perform a blind decoding on transmitted EPI DCI or sequence set to determine whether the WTRU is being paged at the PO or not. The blind decoding may use a pattern which relates the detected synchronization signal blocks or reference signals to a number of transmissions of the EPI DCI associated with the PO. Paging of the WTRU may be used to determine a light/deep sleep state of the WTRU.

Abstract: A wireless transmit/receive unit (WTRU) may receive configuration information indicating a plurality of transmission configuration indicator (TCI) states and a plurality of aperiodic (AP) channel state information reference signal (CSI-RS) trigger states. The WTRU may determine that a unified TCI state is applicable. The WTRU may receive DCI scheduling a downlink transmission. For example, the DCI may include information indicating (i) a trigger state, (ii) an applicable RS, and/or (iii) a source RS of the unified TCI state or a previous AP CSI-RS. The WTRU may determine a RS, to apply for the downlink transmission, from the applicable RS, the source RS of the unified TCI state, and the previous AP CSI-RS. The WTRU may receive the downlink transmission using one or more first quasi-colocation (QCL) type properties associated with the determined RS and a second QCL type property associated with the unified TCI state.

Abstract: The disclosure generally pertains to methods and apparatus for on-demand low-power sidelink channel reservation acquisition in wireless communication systems. A WTRU may determine to request on-demand reports related to sidelink resource usage. A WTRU that receives the report may generate a report based on its knowledge of sidelink resource usage. The responding WTRU may determine a priority associated with the report based on the relative amount of information it has regarding the sidelink resource usage. A response window for the response may be determined based on the priority. The responding WTRU then transmits the report in the corresponding response window. If a collision is detected for the report transmission, the response window may be extended and the report may be retransmitted in the extended response window.

Abstract: Procedures, methods, architectures, apparatuses, systems, devices, and computer program products directed to low-power proximity-based service paging for multi-carrier side-link (SL) communications are described. A first wireless transmit and receive unit (WTRU) may receive, from a second WTRU a request message indicating a set of SL monitoring occasions to be monitored, wherein the set of SL monitoring occasions may be associated with a SL service. The first WTRU may receive one or more transmissions indicating whether the second WTRU is being paged for the SL service. On a condition that the second WTRU is being paged for the SL service, the first WTRU may receive one or more SL messages associated with the SL service and directed to the second WTRU. The first WTRU may transmit to the second WTRU, SL paging information indicating availability of the received one or more SL messages.

Abstract: Systems, methods, and instrumentalities are described herein for paging for highly directional systems. A WTRU may receive a default and/or a dynamic set of active SSBs, may indicate the beams/SSBs which may be used to receive paging DCI (e.g. DCI scrambled with P-RNTI), and/or a message over PDSCH. A WTRU may utilize a default and/or dynamic set of active SSBs that may determine PDCCH monitoring occasions (PMOs) that may be monitored in the WTRU's paging occasions (POs). A WTRU may send paging activating requests to activate a suitable SSB using associated UL signal/resources. A WTRU may send one or more paging activation requests to activate multiple SSBs (e.g., a field of view (FOV) around a suitable SSB). A gNB may support a minimal feedback-based paging procedure.

Abstract: Methods and apparatuses for event-triggered signal measurement reporting in wireless communications are provided.

Abstract: Procedures, methods, architectures, apparatuses, systems, devices, and computer program products for dedicated energy harvesting (DEH). A Wireless Transfer/Receive Unit, WTRU, discovers a first base station of a cell, discovers at least one second base station in the cell, and transmits to the first base station information indicating selection of one of the at least one discovered second base station.

Abstract: Methods, apparatuses, devices, and/or computer program products for reduced reference signal (RS) overhead are described. A method may include receiving configuration information indicating an association between a transmission configuration indication (TCI) state and first, second and third reference signals (RSS). The method may include receiving an indication to switch the TCI state to the first TCI status and thereby determining to receive first source RS. The method may include receiving an indication to switch the TCI state to the second TCI status and thereby determining to receive the second and the third source RSs. The method may also include receiving a downlink transmission based on the activated RSs.

Abstract: Methods, apparatuses, systems, etc., directed to random channel access over zero energy (ZE) air-interface(s) are disclosed herein. In an embodiment, a wireless transmit/receive unit (WTRU) may receive a first reference signal. For example, the WTRU may determine that a first signal strength of the received first reference signal may fail to satisfy a strength condition, and responsively the WTRU may: (i) receive a transmission, (ii) determine a sequence and an occasion based on the received transmission, (iii) transmit using the determined sequence on the determined occasion, and (iv) receive a second reference signal from an interrogating WTRU.

Abstract: A WTRU monitors a sidelink (SL) channel for communicating with a second WTRU in unlicensed SL mode-1 and collects SL assistance information relating to the SL channel. The WTRU transmits to a base station, over an unlicensed Uu band, one or more of a SL scheduling request (SR) or a SL buffer status report (BSR) and the SL channel assistance information. The WTRU receives downlink control information (DCI) from the base station indicating SL resource scheduling, performs listen-before-talk (LBT) on the SL channel associated with the indicated SL resource scheduling and sends a transmission: (1) to the base station, on a condition LBT is unsuccessful, at least one of indication of LBT failure or a request for new SL resource scheduling; or (2) to the second WTRU, on a condition LBT is successful, SL data using the indicated SL resource scheduling. Additional embodiments are disclosed.

Abstract: Systems, methods, and instrumentalities may be configured for two-level reconfigurable intelligent surface (RIS) channel state information (CSI). A wireless transmit/receive unit may receive a first set of symbols. The WTRU may determine a first RIS CSI based on the first set of symbols, a first RIS CSI estimation matrix, and a first RIS CSI quantization format. The first RIS CSI quantization format may use a uniform distribution of phase quantization points. The WTRU may transmit the first RIS CSI. The WTRU may receive a second set of symbols. The WTRU may determine a second RIS CSI based on the second set of symbols, a second RIS CSI estimation matrix, and a second RIS CSI quantization format. The second RIS CSI quantization format may use a non-uniform distribution of phase quantization points. The WTRU may transmit the second RIS CSI.

Abstract: Described herein are systems, methods, and instrumentalities associated with constellation schemes. A wireless transmit/receive unit (WTRU) may receive a message from a network device, wherein the message may indicate at least an uplink grant, a first set of modulation parameters, and a second set of modulation parameters. The WTRU may determine that a first media data unit and a second media data unit are to be transmitted to the network device. If the first media data unit differs from the second media data unit with respect to at least a transmission priority, the WTRU may modulate the first media data unit using the first set of modulation parameters, modulate the second media data unit using the second set of modulation parameters, and transmit the first modulated media data unit and the second modulated media data unit to the network device using respective subsets of the uplink grant.

Abstract: Methods and apparatus are described. A method, implemented in a wireless transmit/receive unit (WTRU) includes monitoring a first control channel search space (SS) associated with a first normal beam set comprising a first beam set. The WTRU initiates extended monitoring and monitors, subsequent to a trigger based on a measurement by the WTRU, a control channel SS associated with an extended beam set comprising the first beam set and one or more additional beam sets. The WTRU determines a second beam set from the extended beam set. The determination is based on a received control channel beam switch command or based on a control channel SS in which a beam switch command is received. The WTRU monitors a second control channel SS associated with a second normal beam set comprising the determined second beam set.