Abstract: Systems, devices, and techniques for random access in a wireless communication network are described. A described technique performed by a user equipment (UE) includes transmitting a first message of a two-step random access procedure to a node of a wireless communication network; receiving, in response to the first message, a downlink control information (DCI) message via a physical downlink control channel (PDCCH) and a second message of the two-step random access procedure via a physical downlink shared channel (PDSCH) in accordance with the DCI message; determining, by the UE, a physical uplink control channel (PUCCH) resource based on the second message; and transmitting, by the UE, hybrid automatic repeat request-acknowledgement (HARQ-ACK) feedback for the second message on the determined PUCCH resource.

Abstract: Devices and methods provide for transmitting downlink (DL) positioning reference signals (PRSs) in a wireless system. A DL PRS resource pool is configured and divided into a plurality of DL PRS resource sets. The DL PRS resource pool includes a periodically repeated amount of resources dedicated for DL PRS transmission by a plurality of gNBs in the wireless communication system. The plurality of DL PRS resource sets correspond to one or more gNB of the plurality of the gNBs. The DL PRSs are encoded for transmission on configured DL PRS resources within the plurality of DL PRS resource sets.

Abstract: Methods disclosed herein may include receiving, at a gNB from a UE, a minimum time gap between a reception at the UE of a configuring message that configures a sending of an SL transmission by the UE and the sending of the SL transmission. Alternatively, the minimum time gap may be measured from the reception at the UE of a DCI message that triggers an SL transmission and the sending of the SL transmission. The method may further include determining, at the gNB, timing information (e.g., an offset, or an absolute time) for the UE to use to schedule the SL transmission, the timing information based on the minimum time gap; generating, at the gNB, a message including a field indicating the timing information; and sending, from the gNB, the message to the UE. Analogous methods for UEs are also disclosed herein. Systems implementing these methods are also disclosed.

Abstract: Systems and methods are described for a 2-Step Random Access Channel (RACH) for New Radio (NR) with unlicensed operation. The systems and methods include at least, generating, by a user equipment (UE), a MsgA of a random access channel (RACH) procedure associated with the NR network, the MsgA having a physical random access channel (PRACH) occasion and an associated physical uplink shared channel (PUSCH) occasion for transmission during the RACH procedure, and transmitting, by the UE, the MsgA to a base station (gNB) over unlicensed spectrum of the NR network during the RACH procedure.

Abstract: Sidelink synchronization for new radio vehicle-to-every thing (NR V2X) communication in a wireless communication system may include determining a loss of global navigation satellite system (GNSS) synchronization for a user equipment (UE), attempting a synchronization with a next generation NodeB/eNodeB (gNB/eNB) node for the UE, and determining successful synchronization with the gNB/eNB node for the UE. The successful synchronization may include a gNB/eNB timing aligned with a GNSS timing of the lost GNSS synchronization.

Abstract: Techniques are provided for implementing power control in a 2-step random access channel (RACH) procedure, including implementing power control during MsgA transmission of the 2-step RACH procedure. For example, a user equipment (UE) determines a transmission power for a physical uplink shared channel (PUSCH) transmission based on a transmission power of a physical random access channel (PRACH) preamble that is associated with the PUSCH transmission during the 2-step RACH procedure. The UE further performs the 2-step RACH procedure using the determined transmission power of the PUSCH to establish a connection to the wireless network.

Abstract: User equipment (UE) positioning within a 5G New Radio (NR) network may be determined by receiving a downlink (DL) position reference signal (PRS) resource set indicating a plurality of DL PRS resources and receiving a DL PRS report configuration that indicates a set of measurements to be performed by a UE for each of the plurality of DL PRS resources within the DL PRS resource set. Position measurements may be performed for each of the plurality of DL PRS resources within the DL PRS resource set, including generating a reference signal time difference (RSTD) measurement by estimating a timing of a first arrival path from at least two of the plurality of DL PRS resources and determining a reference signal received power (RSRP) metric or a signal to noise and interference ratio (SINR) metric associated with the at least two DL PRS resources. The performed position measurements may be reported.

Abstract: This disclosure describes improving a 4-step RACH procedure by using a 2-step RACH procedure. A UE transmits a PRACH preamble and associated MsgA physical uplink shared channel (PUSCH) on a configured time and frequency resource. After successful detection of the PRACH preamble, and decoding of the MsgA PUSCH, the gNB transmits MsgB in the second step. Generally, a mapping is used between the PRACH preamble and the PUSCH resource unit for 2-step RACH. This disclosure describes the mapping for 2-step RACH.

Abstract: A method for handling a Message A physical uplink shared channel (PUSCH) transmission in a random access channel (RACH) procedure for use in fifth generation new radio (5G NR) wireless communication system includes determining that the Message A PUSCH transmission in a first step of a two-step RACH procedure overlaps with at least one other uplink physical channel transmission and transmitting at least one of the Message A PUSCH transmission or the at least one other uplink physical channel transmission in accordance with a priority rule.

Abstract: Systems, apparatuses, methods, and computer-readable media are provided for a user equipment (UE) for a wireless communication system. The UE determines at least one sidelink primary synchronization signal (S-PSS) sequence of at least one S-PSS signal. The at least one S-PSS sequence is different from a primary synchronization signal (PSS) sequence. The EE also determines at least one sidelink secondary synchronization signal (S-SSS) sequence of at least one S-SSS signal. The EE determines a plurality of S-PSS symbols and a plurality of S-SSS symbols corresponding to a sub carrier spacing (SCS). The EE transmits to another EE the determined plurality of S-SSS symbols after the determined plurality of S-PSS symbols. The SCS may be associated with a physical resource block (PRB) allocation size. A maximum of 11 PRBs for a sidelink synchronization signal block (S-SSB) may be set based on the SCS.

Abstract: Systems, apparatuses, methods, and computer-readable media are provided for an access point (AP) for a wireless communication system. The AP includes processor circuitry configured to configure a bandwidth part (BWP) for downlink (DL) positioning reference signals (PRS) and a BWP for DL data transmission to a user equipment (UE), wherein the BWP for DL PRS provides DL PRS to the UE for a UE-based positioning operation. The processor circuitry is configured to select an action to be performed by the UE in response to receiving the configured BWP for DL PRS and the configured BWP for DL data transmission by the UE. The AP includes radio front end circuitry that is coupled to the processor circuitry and configured to transmit, to the UE, the configured BWP for DL PRS, the configured BWP for DL data transmission, and the selected action. The wireless communication is a 5G system or a 5G new radio (5G-NR) system.

Abstract: A design for reference signals dedicated for positioning measurements in UL and DL directions and a mechanism for Tx/Rx beam pair selection for positioning is disclosed. The design can improve performance of positioning operation in NR communication systems, can improve resource efficiency of positioning operation in NR communication systems, and can reduce the amount of resources needed for PRS transmission, reduce latency and increase the positioning measurement quality.

Abstract: Methods, systems, and storage media are described for the measurement and reporting of user equipment (UE) positioning in cellular networks. Other embodiments may be described and/or claimed.

Abstract: Systems and methods are provided to determine an estimated location of a user equipment (UE). For instance, a UE can provide a positioning request to a node while the UE is in a radio resource control idle (RRC_IDLE) or inactive (RRC_INACTIVE) state. The positioning request can be implemented in a random access channel (RACH) message A (MsgA). The UE can then receive a positioning response from the node. The positioning response can be implemented in a RACH message B (MsgB).

Abstract: Embodiments of the present disclosure describe methods and apparatuses for sidelink control information for vehicle-to-vehicle communications.

Abstract: Some embodiments of this disclosure include apparatuses and methods for a fallback procedure for a 2-step random access channel (RACH) procedure for data transmission in a wireless communication system where the apparatuses and methods include at least generating, by a user equipment (UE), a first signal that includes a first message (MsgA) for a 2-step random access channel (RACH) procedure, transmitting, by the UE, the first signal to a next generation NodeB (gNB), determining, by the UE, whether a 4-step RACH procedure is to be used to further transmit the first signal including the MsgA, and further transmitting, by the UE, the first signal to the gNB using the 4 step RACH procedure based on determining that the 4-step RACH procedure should be used.

Abstract: An approach is described for a base station (gNB) that includes the following features. The features include transmitting, by the gNB, a PDCCH signal to a user equipment (UE), wherein the PDCCH signal includes an indication of a PDCCH ordered 2-step RACH procedure. The features also include receiving, by the gNB, a first step of the 2-step RACH procedure, wherein the first step includes a PRACH preamble and an associated MsgA physical uplink shared channel (PUSCH) from the UE.

Abstract: A method and device are disclosed for performing collision resolution in a two-step random access channel (RACH) process. In such a process, an MsgA PUSCH signal and a grant based PUSCH signal may collide. When such a collision is detected, either the MsgA PUSCH signal or the grant based PUSCh signal are dropped. The other of the two signals is then transmitted. The determination regarding which signal to drop can be based on a set of rules stored in memory.

Abstract: Embodiments of the present disclosure describe methods, apparatuses, storage media, and systems for uplink non-orthogonal multiple access transmission schemes employed by transmit circuitry. Other embodiments may be described and claimed.

Abstract: A non-transitory computer-readable storage medium stores instructions for execution by one or more processors of a UE. The instructions configure the UE for low latency NR positioning in a 5G NR network and cause the UE to perform operations comprising decoding configuration signaling received from a base station. The configuration signaling includes measurement gap information and scheduling information for a UE measurement report. A downlink (DL) positioning reference signal (PRS) received from the base station is decoded. Positioning measurements are performed using the DL PRS. The positioning measurements are performed based on a measurement gap corresponding to the measurement gap information. The UE measurement report is encoded for a UL transmission to the base station based on the scheduling information. The UE measurement report includes the positioning measurements.