Abstract: The WTRU may monitor for a downlink transmission in a first monitoring occasion of a first search space. The first monitoring occasion of the first search space may be associated with a first monitoring occasion pattern. The WTRU may monitor for the downlink transmission in a second monitoring occasion of a second search space. The second monitoring occasion of the second search space may be associated with a second monitoring occasion pattern. The first search space and the second search space may belong to a search space subset. The WTRU may receive the downlink transmission in the second monitoring occasion of the second search space. The downlink transmission may include a skipping indication. Based on the WTRU receiving the skipping indication in the downlink transmission in the second monitoring occasion of the second search space, the WTRU may apply skipping to the second search space and the first search space.

Abstract: A method and apparatus are described which perform bandwidth aggregation by simultaneously monitoring and processing a number of simultaneous, non-contiguous or contiguous component carriers in the downlink. A wireless transmit/receive unit (WTRU) can be configured by an evolved Node-B (eNodeB) to support additional component carriers. A pre-configured additional component carrier may be used. Various methods for activating and deactivating the additional component carrier are also described.

Abstract: Methods and systems are disclosed for reducing control signaling in uplink transmissions. A device, such as a wireless transmit/receive unit, may determine to use a demodulation reference signal (DM-RS) transmission schedule out of a plurality of DM-RS transmission schedules. The DM-RS transmission schedule may be characterized by a DM-RS transmission being mapped to a single orthogonal frequency-division multiplexing (OFDM) symbol per subframe of a data stream. The DM-RS transmission schedule may be characterized by a DM-RS transmission being mapped to a first subset of subcarriers of an OFDM symbol of a subframe of a data stream and Physical Uplink Shared Channel (PUSCH) transmission or Physical Uplink Control Channel (PUCCH) control information being mapped to a second set of subcarriers of the OFDM symbol. The first set of subcarriers may be different than the second set of subcarriers. The data stream may be transmitted according to the DM-RS transmission schedule.

Abstract: Embodiments include methods, systems, and apparatuses for receiving a first type of transmission and a second type of transmission. A WTRU may receive a first downlink control information (DCI) during a first downlink (DL) transmission interval allocating first radio resources in the first DL transmission interval for reception of a first type of transmission. The WTRU may receive data from the first type of transmission in the first radio resources. The WTRU may receive data from a second type of transmission in second radio resources that include one or more predetermined regions within the first radio resources. The WTRU may receive a second DCI during a subsequent second DL transmission interval indicating that the data from the first type of transmission was preempted by the data from the second type of transmission. The WTRU may process the data from the first type of transmission based on the second DCI.

Abstract: In a network comprising both fixed transmission points and mobile transmission points, the transmission points may transmit discovery reference signals that allow WTRUs to detect and/or synchronize to the transmission points. The fixed and mobile transmission points may transmit discovery reference signals with different characteristics that allow the WTRUs to distinguish between fixed and mobile transmission points. The mobile transmission points may also transmit a separate maintenance reference signal that allows WTRUs to maintain a connection with the mobile transmission point. For networks in which fixed a mobile transmission points operate in different frequency bands, the mobile transmission points may also periodically transmit discovery beacon signals in the frequency band of the fixed transmission points to allow discovery. Conditions may be imposed on WTRUs before the WTRU will transmit to the network a measurement report reporting on a potential transmission point to which it may be switched.

Abstract: A method and apparatus for adjusting a channel quality indicator (CQI) feedback period to increase uplink capacity in a wireless communication system are disclosed. The uplink capacity is increased by reducing the uplink interference caused by CQI transmissions. A wireless transmit/receive unit (WTRU) monitors a status of downlink transmissions to the WTRU and sets the CQI feedback period based on the status of the downlink transmissions to the WTRU. A base station monitors uplink and downlink transmission needs. The base station determines the CQI feedback period of at least one WTRU based on the uplink and downlink transmission needs and sends a command to the WTRU to change the CQI feedback period of the WTRU.

Abstract: A wireless transmit/receive unit (WTRU) may receive configuration information that indicates resources on which channel assessments are to be performed. The configuration information may indicate a first set of resources associated with a first subband. The first subband may be associated with a first beam. The configuration information may indicate a second set of resources associated with a second subband. The second subband may be associated with a second beam. The WTRU may perform first channel assessments (e.g., first periodic channel assessments) using the first set of resources. The WTRU may perform second channel assessments (e.g., second periodic channel assessments) using the second set of resources. The WTRU may receive a request message to report channel assessment outcomes. Based on the request message, the WTRU may send the channel assessment outcomes. The first subband may be indicated as available. The WTRU may monitor a transmission using the first subband.

Abstract: Systems, methods, and instrumentalities are disclosed for reliable control signaling, for example, in New Radio (NR). A receiver in a wireless transmit/receive unit (WTRU) may receive one or more physical downlink control channel (PDCCH) transmissions comprising downlink control information (DCI). The WTRU may determine a transmission profile associated with an uplink control information (UCI). Based on the transmission profile, the WTRU may determine one or more transmission characteristics associated with the transmission of the UCI. The WTRU may transmit the UCI over a physical uplink control channel (PUCCH). The UCI may be transmitted using transmission characteristics determined by the WTRU. The WTRU may transmit the UCI based on at least one of a control resource set (CORESET), a search space, or a radio network temporary identifier (RNTI). The WTRU may determine a transmission profile differently based on what the UCI may comprise.

Abstract: A wireless transmit receive unit (WTRU) may be configured to receive configuration information from a network regarding a set of spatial filters for the WTRU to use to communicate with the network. Each of the spatial filters may be associated a beam group and/or a measurement resource. The WTRU may further receive downlink control information (DCI) that indicates one or more time periods in which a portion of the set of configured spatial filters may be applicable. Based on the configuration information, the DCI, and/or a measurement, the WTRU may select a spatial filter from the portion of spatial filters to apply in the time period, and the WTRU may perform a communication task in the time period using the selected spatial filter.

Abstract: Methods, apparatuses, systems, etc. directed to beam management or, and/or for use in connection with, multiple cells and/or multiple transmission/reception points are provided. Among the methods is a method that may include any of determining first and second reference signals sets (RS sets) associated with first and second sets of beams; receiving information for first and second beam failure recovery (BFR) sets corresponding to the first and second RS sets, wherein the information indicates an RS set associated with candidate beams (CB-RS set) and an uplink resource set for each of the first and second BFR sets; determining beam failures based on the first and second RS sets; selecting the CB-RS set and UL resource set from the first or second BFR set; determining an RS of the selected CB-RS set; and transmitting information indicating the beam failures using uplink resources of the selected uplink resource set.

Abstract: Systems, methods, and instrumentalities are described herein regarding enhancements of physical channels in Multi-TRP. Reliability enhancements are provided for physical downlink control channel (PDCCH), including, for example, enhanced support for a control resource set (CORESET) combining. Reliability enhancements are provided for physical uplink control channel (PUCCH), including, for example, activation/deactivation of repetition combining, resource selection, etc. Reliability enhancements are provided for physical uplink shared channel (PUSCH), including, for example, spatial relation determination and signaling, configured and dynamic grant enhancements, etc.

Abstract: Embodiments contemplate methods and systems for determining and communicating channel state information (CSI) for one or more transmission points (or CSI reference signal resources). Embodiments further contemplate determining transmission states may include applying at least one transmission state parameter to channel state information (CSI). Embodiments also contemplate reporting CSI based on the transmission state and/or at least one transmission state parameter applied thereto.

Abstract: A method, apparatus, and system of a User Equipment (UE) device executing communications using a Device-to-Device (D2D) Long Term Evolution (LTE) network are provided. The method includes determining D2D devices communicating in an area, determining whether D2D data is to be transmitted, determining one or more resource sets for transmitting the D2D data, and transmitting the D2D data using the determined one or more resource sets.

Abstract: Systems and methods are contemplated for reconfiguration of one or more MAC instances while the WTRU is operating using dual- or multi-MAC instance connectivity. For example, upon reception of RRC reconfiguration information that modifies one or more secondary MAC instances, the WTRU may transmit a reconfiguration complete message to a Macro eNB (MeNB) and may synchronize to small-cell or secondary eNB (SeNB), for example if triggered by one or more of an RRC flag, a physical downlink control channel (PDCCH) order (MeNB/SeNB), MAC activation information, etc. For example, the WTRU may synchronize to the SeNB for specific type(s) of RRC reconfigurations, but not other type(s) of RRC reconfigurations. Although examples may be described in terms of dual connectivity, the WTRU may establish connectivity and perform mobility procedures with more than two radio access network (RAN) nodes (e.g., eNBs), and the embodiments described may be equally applicable to those scenarios.

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: Systems and methods described herein are provided for beamforming and uplink control and data transmission techniques. Such techniques enable a UE to maintain at least one beam process for operation with multiple beams and/or points. A beam process may be indicated for transmission or reception over a downlink or uplink physical channel. Power, timing, and channel state information may be specific to a beam process. A beam process may be established as part of a random access procedure in which resources may be provisioned in random access response messages. Techniques are provided to handle beam process failures, to use beam processes for mobility, and to select beams using open-loop and closed-loop selection procedures.

Abstract: A wireless transmit/receive unit (WTRU) is configured to, on a condition that a serving grant having a non-zero value is too small for transmission of a single protocol data unit (PDU) from any scheduled medium access control-d (MAC-d) flow, transmit scheduling information (SI). The WTRU is further configured to produce a trigger on the condition that the serving grant is too small and the transmission of the SI is based on the produced trigger.

Abstract: A method implemented by a Wireless Transmit/Receive Unit (WTRU) includes receiving a DeModulation Interference Measurement (DM-IM) resource, determining an interference measurement based on the DM-IM resource, and demodulating a received signal based on the interference measurement. An interference is suppressed based on the interference measurement. At least one DM-IM resource is located in a Physical Resource Block (PRB). The DM-IM resource is located in a PRB allocated for the WTRU. The DM-IM resource is a plurality of DM-IM resources which form a DM-IM pattern, and the DM-IM pattern is located on a Physical Downlink Shared Channel (PDSCH) and/or an enhanced Physical Downlink Shared Channel (E-PDSCH) of at least one Long Term Evolution (LTE) subframe. The DM-IM resources are different for different Physical Resource Blocks (PRB) in the LTE subframe. The DM-IM is located in a Long Term Evolution (LTE) Resource Block (RB), and the DM-IM pattern is adjusted.

Abstract: Embodiments contemplate methods and systems for determining and communicating channel state information (CSI) for one or more transmission points (or CSI reference signal resources). Embodiments further contemplate determining transmission states may include applying at least one transmission state parameter to channel state information (CSI). Embodiments also contemplate reporting CSI based on the transmission state and/or at least one transmission state parameter applied thereto.

Abstract: Methods and apparatuses are described herein for accessing an unlicensed spectrum using portions of a carrier's bandwidth (BW). For example, a wireless transmit receive unit (WTRU) may access a serving cell through an initial bandwidth part (BWP). The WTRU may be configured with a plurality of BWPs within an unlicensed frequency spectrum. The WTRU may then determine any of at least one monitoring period and at least one offset per each BWP. The WTRU may then monitor the BWPs based on any of the at least one monitoring period and the at least one offset. The WTRU may receive at least one signal from the serving cell. The signal may be at least one of a downlink control information (DCI), a synchronization signal block (SSB), a reference signal, or a preamble.