Abstract: Methods and systems for transmitting uplink control information in an LTE Advanced system are disclosed. A user device may determine whether uplink control information and/or available channels meet certain criteria and determine whether the uplink control information should be transmitted on a physical uplink control channel, a physical uplink shared channel, or both, based on the criteria. Criteria may include the size of the uplink control information (absolute size or relative to space available on a channel or a threshold value), the type of control information bits, the number of available (i.e., active or configured) component carriers, and the amount of power that may be required to transmit the uplink control information on more than one channel.

Abstract: A relay WTRU may establish a connection between a first and a second WTRU. The relay WTRU may include sending, to the second WTRU, a LMR message received from the first WTRU, the LMR message including a request for a release of the connection, and sending, to the first WTRU, a LMA message received from the second WTRU, where the LMA message includes an acceptance of the release of the connection, The relay WTRU may include sending, to the second WTRU, a link release request message received from the first WTRU including one or more new MSBs of a new KNRP ID and sending, to the first WTRU, a link release response message received from the second WTRU, the link release response message including one or more new LSBs of the new KNRP ID, where the new KNRP ID is formed by combining the new MSBs and the new LSBS.

Abstract: A method for use in a wireless transmit/receiver unit is disclosed. A method may include receiving configuration information indicating a value for a timer associated with feedback reporting and receiving information indicating a presence of a channel state information reference signal (CSI-RS) transmission resource and indicating a request for a feedback report including feedback associated with the CSI-RS transmission resource. The method may include determining a validity of a feedback report based on a time between the CSI-RS transmission resource and a feedback report resource and based on the timer associated with feedback reporting and transmitting, based on a determination that the feedback report is valid, the feedback report in the feedback report resource.

Abstract: Methods and apparatuses for polar coding, including cyclic redundancy check (CRC) aided encoding and belief propagation (BP) decoding for polar codes in wireless communications, are provided. For example, a method comprises determining: 1) a first set of encoding nodes used for creating CRC bits, 2) a first set of polarization branches, each associated with a respective encoding node of the first set of encoding nodes, and 3) a second set of polarization branches, each of the second set of polarization branches is at least one level higher than a respective polarization branch of the first set of polarization branches. The method also comprises performing polar encoding operation(s) for the second set of polarization branches, generating a second set of encoding nodes based on the performed polar encoding operation(s) for the second set of polarization branches, and transmitting polar code bits using the generated second set of encoding nodes.

Abstract: A method and apparatus for accessing a random access channel (RACH) during handover are disclosed. A handover procedure is initiated and a maximum handover interruption timer is activated. A dedicated preamble is transmitted in an attempt to access the RACH on a condition that the dedicated preamble is reserved in a current random access opportunity and the maximum handover interruption timer has not expired. A contention-based preamble is transmitted in an attempt to access the RACH on a condition that a dedicated preamble is not reserved in a current random access opportunity. If the maximum handover interruption timer has expired, a contention-based preamble is transmitted in an attempt to access the RACH.

Abstract: Methods for receiving downlink control information (DCI) are provided herein. A method performed by a wireless transmit/receive unit (WTRU) may include receiving configuration information configuring a set of normal physical downlink control channel (nPDCCH) candidates, receiving a first transmission including first downlink control information (DCI), the first DCI including a first monitoring indicator having a first value, and skipping, based on the first monitoring indicator, monitoring of the set of nPDCCH candidates during a first time window. The method may include receiving a second PDCCH transmission including second DCI, the second DCI including a second monitoring having a second value, monitoring, based on the second monitoring indicator, the set of nPDCCH candidates during a second time window, and decoding a PDCCH transmission detected in the monitored set of nPDCCH candidates to receive third DCI, wherein the third DCI includes information indicating a downlink grant or an uplink grant.

Abstract: A method performed by a station (STA) for operating in a wireless local area network (WLAN) is provided. A method may include receiving a beacon frame including an indication of a target wake time (TWT) period and a type indication that indicates single-user (SU) uplink (UL) transmission or multi-user (MU) UL transmission for the TWT period. The method may include receiving a trigger frame triggering a start of the TWT period. The STA may be awake during the TWT period. The method may include transmitting at least one frame during the TWT period. The at least one frame may be a SU uplink transmission or MU uplink transmission in accordance with the type indication.

Abstract: A wireless transmit/receive unit (WTRU) may receive/transmit data by employing a discontinuous reception cycle, which may include an awake state and a sleep state. For example, while in an awake state, a WTRU may monitor a PDCCH for a subset of time instances. During the remaining time instances, the WTRU may enter a sleep state, in which the WTRU may switch its receiving circuitry off (e.g., to reduce power consumption). A WTRU may receive (e.g., may expect to receive) one or more transmissions, during an awake state, before entering a sleep state. The durations of an awake state and/or the durations of subsequent sleep states may be determined based on whether the WTRU receives a transmission during the awake state and/or what the transmission was for. The WTRU may modify the value of a sleep state timer based on previous sleep state and/or awake state timer values.

Abstract: An access point (AP) may determine that a basic service set (BSS) color of an overlapping BSS (OBSS) associated with a neighboring AP is a same color as a BSS color of the AP. A BSS color change announcement message may be generated having BSS color information and a color switching time. The BSS color information may indicate a BSS color for the AP and the color switching time may indicate a time until the AP switches to the BSS color.

Abstract: Power efficient measurements may be implemented for high frequency operations. A WTRU may determine measurement occasions, DRX cycle/configuration transitions, DRX pause/resume, DRX timer operation, and/or BFR based on scheduling activity, beam configuration, BFI detection, BFD, beam loss, etc. A WTRU may be configured with multiple DRX cycles and measurement opportunities (e.g., with different periodicities). The WTRU may perform (e.g., RS) measurement(s) with determined/configured timing (e.g., DRX on-durations) in a first DRX cycle based on condition(s). The WTRU may switch to a second DRX cycle and perform RS measurement(s) with determined/configured timing based on condition(s) (e.g., counted number of BFIs detected in first DRX cycle). The WTRU may switch from the second (e.g., short) DRX cycle to the first (e.g., long) DRX cycle or to non-DRX operation (e.g., DRX suspension or reset DRX inactivity timer) based on condition(s) (e.g., number of BFIs in first and/or second DRX cycle(s)).

Abstract: Embodiments contemplate methods, systems, and apparatuses for interference measurement in a wireless communication network, including wireless communication networks the employ MIMO in uplink and/or downlink communication. Embodiments contemplate identifying one or more interference measurement resource elements that may be received from one or more transmission points. Embodiments also contemplate performing interference measurement estimation based at least in part on the identified one or more interference measurement resource elements. Channel state information (CSI) perhaps in the form of reports may be generated based at least in part on the one or more interference measurement estimation. Embodiments also contemplate that the CSI report may be transmitted to one or more nodes. In some embodiments, the one or more interference measurement resource elements may be received as part of a set of resource elements.

Abstract: Methods and apparatuses are described herein for monitoring radio links between wireless transmit/receive units (WTRUs) and determining of radio link failure, and may be used, among others, for New Radio (NR) vehicular communication (V2X); a mode whereby WTRUs can communicate with each other directly. A radio link between a WTRU and another WTRU may be monitored independently per ongoing unicast and/or multicast link, and radio link failure (RLF) may be determined as a function of the monitoring.

Abstract: The standards organization 3GPP is exploring new small data delivery techniques for machine-type communications (MTC). It is recognized herein that existing approaches leave the “small data” decision to the service capability server (SCS) for downlink data and to the user equipment (UE) for uplink data. A user equipment (UE) or the core network can identify the services (or flows) that should be characterized as Small Data, and can make decisions as to when to employ optimized Small Data procedures.

Abstract: A method to reserve a directional channel, such as in an unlicensed spectrum for instance, is disclosed. In an example embodiment, the method may be performed by a receiving node, such as a user equipment (UE) for instance. In such method, the receiving node may receive an enhanced directional transmit request message from a transmitting node and transmit an enhanced directional transmit confirmation message using one or more first beams, with at least one first beam being directed in a first direction towards the transmitting node. Further, the receiving node may transmit at least one additional enhanced directional transmit confirmation message using one or more second beams, with at least one second beam being directed in a second direction towards a potentially interfering node. In the method, the second direction is a different direction than the first direction.

Abstract: Techniques, devices and systems are disclosed for generating a resource request poll comprising at least one response criteria, transmitting the resource request poll, receiving a resource request report from STAs that meet at least one response criteria. A trigger frame may be transmitted to the at least one STA based on the resource request report from the at least one STA. The response criteria may include at least one of a NFRP, a UL access type, a delay bound, an NDP feedback report AC, a number of indicated AID bits, an AID range, an information requested, a number of bits to be included in NDP feedback report or preamble, number of LTFs to be included in the NDP feedback report or preamble, and a number of bits to be included in NDP feedback report or preamble per LTF or per N LTF symbol.

Abstract: Methods, apparatus and systems for managing a connection state of a Wireless Transmit/Receive Unit (WTRU) that is in Mobile Initiated Communication Only (MICO) mode are disclosed. One representative method may include the WTRU obtaining information indicating that the WTRU is to initiate registration prior to sending a Service Request (SR). The representative method may further include the WTRU sending a registration request in accordance with the obtained information and sending a SR after registering with a Network Entity.

Abstract: A wireless transmit/receive unit (WTRU) may receive a first scheduling assignment that includes an indication of one or more first resources and an indication of a first priority for a first sidelink data transmission from another WTRU. The first WTRU may determine to send a second sidelink data transmission associated with a second priority that is lower than the first priority. The first WTRU may determine a signal strength associated with the first scheduling assignment and may select one or more resources for sending the second sidelink data transmission. The first WTRU may determine that one or more first resources are available for transmission of the second sidelink data transmission based on the signal strength associated with the first scheduling assignment being below a threshold. The first WTRU may send a second scheduling assignment including an indication of the selected one or more resources for the second sidelink data transmission.

Abstract: Systems, methods, and instrumentalities are disclosed to manage interference caused by D2D communications. A wireless transmit receive unit (WTRU) may include a processor. The processor may be configured to perform one or more of the following. The processor may determine to send information using a device-to-device transmission via a resource pool from a plurality of resource pools. Each resource pool may be associated with a range of reference signal receive power (RSRP) values. The processor may determine a RSRP measurement of a cell associated with the WTRU. The processor may select a resource pool from the plurality of resource pools based on the RSRP measurement of the cell. The RSRP measurement of the cell may be within the range of RSRP values associated with the selected resource pool. The processor may send the information using the selected resource pool.

Abstract: A SL wireless transmit/receive unit (WTRU), configured in mode 1, with SL transmissions on unlicensed spectrum, may receive a SL grant from a gNodeB (gNB) and determine whether the SL grant falls within a COT initiated by another WTRU, based on COT structure information received from SCI transmissions of other WTRUs. If the SL grant falls within the COT initiated by another WTRU, the WTRU may perform a first LBT type to try to share the COT. If the SL grant does not fall within the COT initiated by another WTRU, the WTRU may perform a second LBT type to try to initiate its own COT. If LBT fails for the grant, the WTRU may report a failed LBT to the gNB in UCI.

Abstract: Methods, apparatus and systems are disclosed. In one representative method, a wireless transmit/receive unit (WTRU) may receive information associated with one or more configured grants (CGs), may select a first CG corresponding to a first CG configuration, and may transmit, on a CG occasion associated with the first CG, a transport block (TB) using resources associated with the first CG. The WTRU may also start a CG timer for the first CG responsive to a transmission of the TB, and receive a HARQ Acknowledgement (ACK) indication indicating a HARQ-ACK feedback value and associated with a HARQ Process ID (PID) in Downlink Feedback Information (DFI) of Downlink Control Information (DCI). In this representative method, after reception of the HARQ ACK indication and on condition that a HARQ-ACK feedback value is equal to ACK, the WTRU may stop the CG timer and may flush a HARQ buffer associated with the HARQ PID.