Abstract: A wireless transmit receive unit (WTRU) may operate in a dual connectivity (DC) context. While in a RRC_INACTIVE state, the WTRU may receive a paging message from a first cell, which may be associated with a master cell group (MCG). The paging message may indicate that the WTRU is to respond to the paging message on another cell. Also, or alternatively, the paging message may indicate that data for the WTRU is available on an SCG bearer. The WTRU may select a second cell (e.g., a cell other than the first cell) from a secondary cell group (SCG) list, which may include one or more secondary cells. The WTRU may initiate a random access channel procedure with the second cell based on receiving the paging message from the first cell. The WTRU may receive data from the second cell via the SCG bearer while in the RRC_INACTIVE state.

Abstract: Systems, methods, and instrumentalities are described herein for enhanced conditional handover (CHO) ZPSCell change (CPC) between a source and target node having different features/capabilities. Examples of a WTRU configured with CHO/CPC con- figuration information are provided herein. The CHO/CPC configuration information may include a radio resource control (RRC) reconfiguration message (e.g., a delta configuration). If the CHO trigger conditions are fulfilled. the WTRU may execute the RRC reconfiguration message (e.g., the delta configuration) before executing the associated handover (HO) to the target or before executing the associated SCO change.

Abstract: Systems, methods, and instrumentalities are described herein for sidelink (SL) collision detection and indication (e.g., in new radio (NR) vehicular communications (V2X)). A wireless transmit/receive unit (WTRU) may send resource reservations (e.g., in sidelink control information (SCI)). A receiving (RX) WTRU may receive SCI from (e.g., multiple) transmitting (TX) WTRUs, where the TX WTRUs are reserving resources for transmission. The TX WTRUs may be unaware of the other TX WTRUs (e.g., unaware of the resources being reserved by other TX WTRUs). Resources may be in conflict, for example, if the reserved resources overlap (e.g., partially or completely). Collision may occur, for example, if multiple TX WTRUs reserve the resources in conflict for transmission and/or if the TX WTRUs reserving the resources in conflict for transmission do not reselect a non-conflicting resource.

Abstract: A system and methods for beam failure recovery and management for multi-carrier communications with beamforming are disclosed herein. A wireless transmit/receive unit (WTRU) may monitor for and detect a beam failure of a beam associated with a secondary cell (Scell). The WTRU may select an Scell candidate beam. The WTRU may transmit using a selected uplink (UL) resource in a primary cell (SpCell) a medium access control (MAC) control element (CE) including an indication of Scell beam failure and identifying the selected candidate beam. The WTRU may receive an Scell beam failure indication response on the SpCell indicating an SCell index and a downlink (DL) quasi co-location (QCL) reference associated with the Scell. The WTRU may verify that the DL QCL reference matches with the candidate beam. The WTRU may perform random access on the SCell using the selected QCL reference and the selected candidate beam.

Abstract: Light and/or Inactive state connectivity and/or autonomous mobility techniques are contemplated. A WTRU may, for example, have an inactive/idle mode, a light connected/loosely connected/Inactive mode and/or a connected/fully connected/Active mode. A WTRU in light connected mode may have a WTRU context stored in a RAN. A WTRU may perform an area monitoring procedure while in light connected state. A WTRU may engage in autonomous mobility during light connectivity. A WTRU may move within a logical area (e.g., a RAN paging area), perhaps without notifying the network. The WTRU may provide notice when it has moved outside a logical area (e.g., update RAN paging area). Mobility in light connected state may be network controlled (e.g., to enable handover when data transfer may be allowed and/or ongoing). A WTRU may be reachable during a light connectivity state. A WTRU may engage in autonomous mobility during light connectivity and/or an Inactive state.

Abstract: Systems, methods and instrumentalities are described herein with respect to the mobility and multi-connectivity of wireless transmit receive units. These devices may be configured to perform conditional handovers and/or conditional second cell group reconfigurations including primary secondary cell additions or changes. The devices may exchange information with a network while performing the conditional reconfigurations and/or conditional handovers. The devices may be configured with rules to handle concurrent handover and reconfiguration tasks.

Abstract: Systems, methods, and devices for sidelink transmit-receive distance related determinations are disclosed herein. In one example, a wireless transmit receive unit (WTRU) may be configured with an associate between range information and zone configuration. The WTRU receive an indication of a specific range information requirement and determine its own zone location based on the configured information and location means (e.g., GPS). The WTRU may also receive zone location information of a transmitting device, and determine the distance between the WTRU and the transmitting device.

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: Methods, devices, and systems for congestion control in a wireless communications system. Some embodiments including receiving a plurality of zone configurations, receiving, for each of the plurality of zone configurations, a channel busy ration (CBR) threshold and a mapping of zone identities (IDs) to resource pools; and measuring a CBR of a resource pool with which the WTRU is currently configured. If the measured CBR meets a CBR threshold of a first zone configuration of the plurality, the WTRU is configured with the first zone configuration, with a zone ID based on the first zone configuration and apposition of the WTRU, and with a resource pool base on the mapping and configured zone ID.

Abstract: A method and system for flexible resource control for a wireless transmit/receive unit (WTRU) is disclosed. The WTRU may monitor a first control channel region and receive a first control channel transmission in the first control region indicating boundaries of a plurality of numerology blocks of a carrier. The WTRU may then receive a second control channel transmission in a second control channel of a second control region, wherein the second control channel transmission indicates one or more numerology parameters for at least one of the plurality of numerology blocks. The WTRU may then transmit or receive data based on the one or more numerology parameters of the one or more numerology blocks.

Abstract: A wireless transmit receive unit (WTRU) may operate in a dual connectivity (DC) context. While in a RRC_INACTIVE state, the WTRU may receive a paging message from a first cell, which may be associated with a master cell group (MCG). The paging message may indicate that the WTRU is to respond to the paging message on another cell. Also, or alternatively, the paging message may indicate that data for the WTRU is available on an SCG bearer. The WTRU may select a second cell (e.g., a cell other than the first cell) from a secondary cell group (SCG) list, which may include one or more secondary cells. The WTRU may initiate a random access channel procedure with the second cell based on receiving the paging message from the first cell. The WTRU may receive data from the second cell via the SCG bearer while in the RRC_INACTIVE state.

Abstract: A wireless transmit/receive unit (WTRU) may perform a listen before talk (LBT) procedure associated with a sidelink (SL) bandwidth. The SL bandwidth may include a resource block (RB) set. The WTRU may determine a CSLF associated with the RB set of the SL bandwidth based on the LBT procedure. The WTRU may determine a resource for reporting the CSLF, for example, based on a priority rule. The priority rule may indicate that a licensed resource has a higher priority than an unlicensed resource. The priority rule may indicate that, if a consistent LBT failure is not detected on an unlicensed uplink (UL) resource, the unlicensed UL resource has a higher priority than an unlicensed SL resource. The WTRU may send a medium access control (MAC) control element (CE) using the determined resource. In examples, the MAC CE may indicate the RB set.

Abstract: Systems, methods, and instrumentalities are disclosed herein for paging acquisition in multipath WTRU to network relays. A first WTRU may receive configuration information indicating information associated with a first monitoring pattern to use if a first condition is satisfied and information associated with a second monitoring pattern to use if a second condition is satisfied. The first condition and the second condition may be associated with a link quality associated with a second WTRU. The first WTRU may receive a first indication from the second WTRU. The first WTRU may determine that the first condition is satisfied. The first WTRU may send an indication of the first monitoring pattern. The first WTRU may monitor a first paging occasion in accordance with the first monitoring pattern. The first WTRU may receive a first paging message for the second WTRU in the first paging occasion. The first WTRU may send an indication of the received first paging message to the second WTRU.

Abstract: A wireless transmit receive unit (WTRU) may receive first data on a first physical sidelink shared channel (PSSCH) transmission. Further, the WTRU may transmit second data on a second PSSCH transmission. The WTRU may then determine, based on a first priority associated with the first data and a second priority associated with the second data, prioritization between a transmission of a first physical sidelink feedback channel (PSFCH) transmission associated with the first data and a reception of a second PSFCH transmission associated with the second data. Moreover, the WTRU may either, based on the prioritization determination, transmit, on the first PSFCH transmission, first hybrid automatic repeat request (HARQ) acknowledgement (ACK)/negative ACK (NACK) feedback associated with the first data, or receive, on the second PSFCH transmission, second HARQ ACK/NACK feedback associated with the second data.

Abstract: Methods, systems, and apparatuses for sidelink communication are disclosed. A WTRU may receive a first SCI element from a second WTRU within a group. The WTRU may receive a first RCI element within a first set of resources scheduled by the first SCI. The first RCI may include information about which WTRU in the group is scheduled to use a second set of resources. The WTRU may determine, based on the first RCI, that one or more subresources within the second set of resources are available. The WTRU may transmit data in the one or more subresources. The first SCI and the first RCI may be received in a first reservation period and the one or more subresources may be in a second reservation period.

Abstract: A wireless transmit/receive unit (WTRU) is configured to perform a method that comprises receiving resource reservation information that indicates a group of resources. The method comprises determining subresources, from the group of resources, for the WTRU to use for transmitting data. The determining subresources is based on an identification (ID) that is assigned to the WTRU. The method comprises determining a distance. The distance is determined based on a geographical area that a second WTRU is located in. The method comprises transmitting the data on the determined subresources on a condition that the determined distance is less than a transmission range value. The ID assigned to the WTRU is a group member ID. The resource reservation information is a sidelink control information (SCI). The resource reservation information is received over a physical sidelink control channel (PSCCH) or a physical sidelink shared channel (PSSCH).

Abstract: Systems, methods and instrumentalities may be provided for handling a user plane in a wireless communication system. The wireless communication system may be characterized by a flexible air interface. One aspect of the flexible air interface is that transmissions by a wireless transmit/receive unit (WTRU) in the system may have different quality of service (QOS) requirements, such as different latency requirements. The WTRU may adjust its behaviors based on the QoS requirements, e.g., by utilizing preconfigured resources, resource requests, self-scheduling, and/or the like, such that the transmissions may be performed in accordance with their respective QoS requirements.

Abstract: Logical channel (LCH) may be multiplexed together based on one or more latency requirements. Mapping of LCH(s) to spectrum operating mode(s) (SOM(s)) may be based on SOM capability and/or LCH requirements. A WTRU may determine mapping based on one or more pre-defined rules. The mapping may be based on one or more requirements for the various type of traffic and/or SOM capabilities. A radio bearer may be mapped to one or more SOMs. The WTRU may be configured with a set of SOMs, for one or more, or each, radio bearer. The WTRU may dynamically determine, for example based on radio conditions, buffer status and/or other parameters, the SOM to use. Incompatible multiplexing of LCH may be reduced and/or avoided, perhaps based on using one or more transport blocks (TBs) mapped to the same physical layer (PHY). Traffic may be prioritized based on one or more latency requirements.

Abstract: Systems, methods, devices, and instrumentalities are described herein relate to partial or delta updated flight path reporting. A wireless transmit/receive unit (WTRU) may transmit a first message indicating flight path information is available. The WTRU may receive a second message including a flight path reporting configuration. The flight path reporting configuration may request the flight path information. The WTRU may transmit an initial flight path message within a third message. Based on information associated with changing from a previous flight path to an updated flight path, the WTRU may detect that a previous flight path is required to be updated with an updated flight path. The WTRU may transmit an indication that the updated flight path is available. The WTRU may receive a request for and subsequently transmit partial or delta updated flight path information.

Abstract: A transmitting wireless transmit/receive unit (Tx WTRU) may receive configuration information that indicates one or more parameters. The one or more parameters may be associated with resource selection. The Tx WTRU may determine a first resource selection window and a second resource selection window. The first resource selection window may be associated with an active time of a receiving wireless transmit/receive unit (Rx WTRU). The second resource selection window may be associated with an inactive time of the Rx WTRU. The Tx WTRU may determine a first number of candidate resources associated with the first resource selection window. The Tx WTRU may determine a first number of candidate resources associated with the second resource selection window. In examples, the Tx WTRU may increase the first number of candidate resources associated with the first resource selection window to a second number of candidate resources associated with the first resource selection window.