Abstract: Systems and/or methods for supporting communications at a reduced bandwidth with a full bandwidth network such as a long-term evolution (LTE) network may be disclosed. For example, inband assignments such as downlink assignments and/or uplink grants may be provided and/or received and transmissions may be monitored and/or decoded based on the inband assignment. Additionally, information (e.g. a definition or configuration) associated with an ePDCCH may be provided and/or received and ePDCCH resources may be monitored and/or decoded based on such information. An indication for support of a reduced bandwidth by the full bandwidth network may also be provided and/or received and control channels in the reduced or narrow bandwidth may be monitored and/or decoded based on the indication. A PRACH preamble and/or a multi-type subframe definition may also be provided and/or used for support of such a reduced bandwidth.

Abstract: A WTRU may comprise circuitry configured to determine a sequence, from a set of sequences comprising 0 0 0 0 0 0 1 1 0 1 1 0, 0 0 0 0 0 1 0 0 0 1 1 1 and 0 0 0 0 0 1 1 1 0 1 1 1. The WTRU may further comprise a transmitter configured to transmit a DMRS, derived from the determined sequence.

Abstract: A wireless transmit/receive unit (WTRU) may determine a first set of beams and a second set of beams, that a respective quality of each beam in the first set of beams is less than a predetermined quality value, and that a beam that is in the second set of beams and not in the first set of beams has a quality that is equal to or greater than the predetermined quality value. The WTRU may select the beam that is in the second set of beams and not in the first set of beams and whose quality is equal to or greater than the predetermined quality value, for a BFR and send a message that indicates the selected beam for the BFR to abase station (e.g., a gNodeB). The WTRU may receive a message comprising the selected beam from the gNodeB.

Abstract: A method performed by a relay wireless transmit/receive unit (WTRU) includes receiving an indication of a change in state of a remote WTRU having a paging link with the relay WTRU, receiving a paging message from a network. The paging message includes a system information (SI) change indication, wherein the SI change indication indicates an availability of updated SI information from the network for the remote WTRU. The relay WTRU transmits the updated SI information to the remote WTRU based on the received indication of a change in state of the remote WTRU.

Abstract: Methods, apparatuses, systems, devices, and computer program products directed to phase-continuous frequency selective precoding are provided. Included among these classes are methods for use in connection with dynamic precoding resource block group (PRG) configuration and with codebook based transmission configuration. A representative of such methods may include any of receiving signaling indicating transmit precoding information; determining a candidate PRG size using any of the transmit precoding information, a rule for determining a PRG size and configured PRG sizes; and configuring or reconfiguring a wireless transmit/receive device in accordance with the candidate PRG size.

Abstract: A first wireless transmit/receive unit (WTRU) may receive, from a second WTRU, sidelink control information (SCI), including first information indicating if a resource is reserved by the second WTRU, and second information indicating if the second WTRU is a power saving or non-power saving. The first WTRU may measure a reference signal receive power (RSRP) of signals transmitted by the second WTRU. The first WTRU may add a resource to a set of available resources if the first information indicates that the resource is not reserved by the second WTRU. If a resource is reserved, the WTRU may set an RSRP threshold to a first set or second threshold based on a power saving mode of the second WTRU. The first WTRU may add the resource to the set of available resources if the measured RSRP is less than the selected RSRP threshold.

Abstract: A WTRU may receive downlink control information (DCI) indicating a start of a frame. The DCI may be received on a control channel, such as the Physical Downlink Control Channel (PDCCH) from an eNB, base station, AP, or other infrastructure equipment operating in a wireless communications system. The WTRU may decode the DCI and may determine a transmit time interval (TTI) duration, which may be expressed in terms of an integer number of basic time intervals (BTIs). The WTRU may determine a downlink (DL) transmission portion and assignment and an uplink (UL) transmission portion and UL grant based on the received DCI. Additionally, the WTRU may determine the start of the UL portion based on an offset (toffset). The WTRU may receive data in a DL portion of the frame and may transmit in an UL portion of the frame based on the determined UL grant and TTI duration.

Abstract: A method and apparatus for use in a network device for transmitting requested information blocks is disclosed. A network device transmits a broadcast signal having configuration information, the configuration information indicating a group of preambles. Further, the network device receives, responsive to the configuration information, a transmission including a preamble from the group of preambles and a request message requesting one or more system information blocks (SIBs). Also, the network devices transmits a random access response (RAR) in response to the transmission. Moreover, the network devices transmits at least one of the requested one or more SIBs in response to the request message. In an example, the transmitted preamble or request message includes a control field that indicates additional SIB request information.

Abstract: Methods, apparatus, systems, architectures, and interfaces for a wireless transmit receive unit (WTRU) performing sidelink communications are provided.

Abstract: Procedures, methods, architectures, apparatuses, systems, devices, and computer program products includes measuring Channel State Information (CSI) associated with at least one reference signal and determining a trained Artificial Intelligence (AI) model to generate at least a portion of a report that includes the CSI associated with the at least one reference signal. The report comprising the CSI associated with the at least one reference signal is transmitted.

Abstract: Systems, methods, and instrumentalities are disclosed herein associated with transmission of demodulation reference signals (DMRS) in wireless systems. DMRS symbols may be placed in a slot for channel estimation operations. For example, channel estimation performance may be enhanced based on using an increased number of DMRS symbols. Channel estimation enhancements may be performed by transmitting DMRS symbols in an extended slot, for example, to avoid data degradation (e.g., which may result from replacing data transmission symbols with DMRS symbols). An extended slot may be a slot that includes symbols spanning across multiple slots (e.g., two slots, consecutive slots), for example, such as a slot n and a slot n+1.

Abstract: A method and apparatus are described for a low cost machine-type-communication (LC-MTC) wireless transmit/receive unit (WTRU) to enhance coverage. An example method for physical broadcast channel (PBCH) enhancement includes receiving system information on an enhanced PBCH (ePBCH). The ePBCH is located in a set of radio frames which is a subset of available radio frames, where the subset includes fewer than all the available radio frames. The ePBCH is received in at least one radio frame of the set of radio frames. An example method for physical random access channel (PRACH) enhancement includes receiving configuration of legacy PRACH resources and enhanced PRACH (ePRACH) resources. The WTRU selects one of legacy PRACH resources or ePRACH resources based on a coverage capability. Another example method for PRACH enhancement includes receiving configuration of ePRACH resources. The ePRACH resources include multiple ePRACH resource types, each ePRACH resource type being associated with a coverage capability.

Abstract: Systems, methods, and instrumentalities are described for handling positioning reference signals in a wireless communication system. The positioning reference signals may be assigned priorities that may be used to facilitate various operations of a wireless transmit/receive unit (WTRU) such as positioning related services, collision avoidance, measurement and reporting, etc. The WTRU may be configured with multiple muting patterns associated with the positioning reference signals and may switch between different muting patterns based on the priorities of the positioning reference signals and/or other downlink (DL) or uplink (UL) transmissions that may overlap or collide with the positioning reference signals.

Abstract: Methods and systems for sending and receiving an enhanced downlink control channel are disclosed. The method may include receiving control channel information via an enhanced control channel. The method may also include using the control channel information to receive a shared channel. The method may include detecting the presence of the enhanced control channel in a given subframe. The enhanced control channel may be transmitted over multiple antenna ports. For example, code divisional multiplexing and de-multiplexing and the use of common and UE-specific reference signals may be utilized. New control channel elements may be defined, and enhanced control channel state information (CSI) feedback may be utilized. The presence or absence of legacy control channels may affect the demodulation and or decoding methods. The method may be implemented at a WTRU.

Abstract: A method performed by a wireless transmit/receive unit (WTRU) may compromise: receiving a downlink control information, wherein the DCI includes a multi-PDSCH priority indication; determining a priority for each of a two or more PDSCHs transmissions based on the multi-PDSCH priority indication; determining one or more scheduling parameters for each of the two or more PDSCH transmissions based on the determined priority of each of the two or more PDSCH transmissions; and receiving each of the two or more PDSCH transmissions using the respective determined scheduling parameters. The method may further compromise associating a first scheduling parameter with a first priority and a second scheduling parameter with a second priority, wherein the first priority is a high priority and the second priority is a low priority.

Abstract: Systems, methods, and instrumentalities are disclosed herein associated with the estimation of an obstacle location. A WTRU may receive configuration information regarding reference signal (RS) resources, and transmit an RS (e.g., a sounding reference signal for positioning) using a configured resource. The WTRU may receive a signal reflected from an obstacle based on the transmission of the RS and the WTRU may perform a measurement of the reflected signal. The WTRU may report a result of the measurement to a network device to assist the network device with determining the location of the obstacle.

Abstract: Methods and apparatuses for Sidelink (SL) communication are disclosed herein. A method for SL communication performed by a Wireless Transmit/Receive Unit (WTRU) may include receiving a plurality of resources over a Physical Sidelink Control Channel (PSCCH) in a slot. In addition, the method may include determining the plurality of resources in the slot are control information resources and determining a control information resource type associated with the control information resources. The method may include determining a priority of the control information resource type based on a configuration relating priorities to control resource information types. The method may also include determining a Quality of Service (QoS) of the transport block (TB) associated with the control information resource type. Moreover, the method may include decoding the PSCCH according to the determined priority of the control information resource type.

Abstract: Methods and apparatuses are described herein for paging procedures in wireless systems. For example, a wireless transmit receive unit (WTRU) may monitor one or more physical downlink control channels (PDCCHs) for paging resources associated with a first subset of synchronization signal (SS) blocks that corresponds to a first beam tracking area (BTA). On a condition that at least one measurement of at least one beam associated with the first subset of SS blocks is less than a predetermined threshold, the WTRU may transmit, to a base station (BS), a signal indicating a second BTA that is associated with a second subset of SS blocks. The signal includes a physical random access channel (PRACH) resource associated with a second group of SS blocks that corresponds to the second BTA.

Abstract: Method, apparatus, and systems for flexible aperiodic reference signal (RS) transmissions are provided. For example, a method implemented in a wireless transmit/receive unit (WTRU) for wireless communications comprises receiving configuration information of one or more sounding reference signal (SRS) resource sets, each SRS resource set of the one or more SRS resource sets is associated with a slot offset and a set of slot offset deltas; receiving downlink control information (DCI) indicating an SRS request, the SRS request indicates an SRS resource set of the one or more SRS resource sets; determining an SRS configuration from a set of SRS configurations for SRS transmissions; determining a slot for transmitting an SRS based on the determined SRS configuration; and transmitting, in the determined slot, the SRS using resources of the indicated SRS resource set.

Abstract: A method for determining a DRX operation in a wireless transmit receive unit (WTRU) that has information indicating multiple DRX configurations, includes selecting a first DRX configuration from the multiple DRX configurations based on a first cast type and an associated first quality of service (QOS) information for a first sidelink radio bearer (SLRB) configuration, selecting a second DRX configuration from the multiple DRX configurations based on a second cast type and an associated second QoS information for a second SLRB configuration, determining a sidelink monitoring time based on a combination of an active time associated with the first DRX configuration and an active time associated with the second DRX configuration, and monitoring a sidelink control channel using the determined sidelink monitoring time.