Abstract:
Technology for dynamically reconfiguring an uplink-downlink (UL-DL) time-division duplexing (TDD) configuration is disclosed. In an example, a user equipment (UE) can have computer circuitry configured to: Receive a UL-DL reconfiguration indicator from a node to dynamically reconfigure a flexible subframe (FIexSF) to a different UL-DL transmission direction from a semi-static UL-DL configuration; apply a DL channel timing based on a DL favored UL-DL configuration; and apply a UL channel timing based on a UL favored UL-DL configuration. The FIexSF can be capable of changing an UL-DL transmission direction. The DL favored UL-DL configuration can include more DL subframes than a semi-static UL-DL TDD configuration for the UE, and the UL favored UL-DL configuration includes more UL subframes than a semi-static UL-DL TDD configuration for the UE.
Abstract:
Various embodiments herein provide techniques related to adjustment of contention window size for new radio (NR) sidelink (SL) systems. Specifically, embodiments may relate to NR SL systems operating in the frequency range 1 (FR-1) unlicensed band, and using type 1 listen-before-talk (LBT). Embodiments further relate to LBT bandwidth (BW) definitions in such systems. Other embodiments may be described and/or claimed.
Abstract:
Methods, systems, and storage media are described for new radio downlink positioning reference signal (NR DL PRS) resource allocation and configuration. In particular, some embodiments relate to some embodiments relate to NR DL PRS resource configurations such as comb size, number of symbols, DL PRS resource time configuration (e.g., initial start time and periodicity), and providing formulas for calculation of seed for DL PRS sequence generation. Other embodiments may be described and/or claimed.
Abstract:
An apparatus and system for new radio (NR) vehicle-to-everything (V2X) sidelink communications are described. Feedback channel design for inter-user equipment (UE) feedback includes a single or multi-bit conflict indication that indicates a type of collision between sidelink communications. Prioritization between Hybrid Automatic Repeat ReQuest (HARQ) feedback transmission/reception and the inter-UE coordination feedback transmission/reception are described. In addition, control of the number of times the inter-UE coordination feedback is transmitted is provided.
Abstract:
Embodiments herein relate to sidelink communication between nodes, Aspects of the sidelink communication, in accordance with embodiments herein, may include one or more of resource selection, congestion control, and resource signaling. Specific embodiments may relate to use of at least one priority level during the sidelink communication. Other embodiments may be described and/or claimed.
Abstract:
Various embodiments herein provide techniques for transport block size (TBS) determination for communication on a physical sidelink shared channel (PSSCH). The embodiments may be used by vehicle-to-everything (V2X) user equipments (UEs). Other embodiments may be described and claimed.
Abstract:
An apparatus and system for inter-UE coordination feedback for sidelink communications are described. In particular, inter-UE coordination feedback signaling for reliable sidelink communication including transmitter-based resource allocation and signaling of conflicts, prioritization of the inter-UE coordination feedback, and timing of the inter-UE coordination feedback are described. Sidelink hybrid acknowledgment request (HARQ) acknowledgment/negative acknowledgment (ACK/NACK) or NACK only signaling is prioritized over a half-duplex (HD) or co-channel collision (CC) feedback indication, and uplink transmissions are prioritized over sidelink transmissions. In response to detection of a conflict, the inter-UE coordination feedback is transmitted relative to the slot where the HD or CC event occurs or relative to the slot where reservation of the resources for the sidelink transmissions.
Abstract:
Embodiments herein provide methods of sidelink communication between nodes including resource selection, congestion control, and/or resource signaling. Other embodiments may be described and claimed.
Abstract:
An apparatus of user equipment (UE) includes processing circuitry coupled to a memory, where to configure the UE for New Radio (NR) vehicle-to-everything (V2X) sidelink communication. The processing circuitry is to decode radio resource control (RRC) signaling from an authorized V2X network entity. The RRC signaling including configuration information to activate a sidelink transmit (TX) bandwidth part (BWP) of a plurality of sidelink TX BWPs within a sidelink carrier. Data is encoded for transmission to a second UE using a first sidelink signal. The processing circuitry is to cause transmission of the encoded data via the first sidelink signal. A bandwidth of the first sidelink signal during the transmission is within the activated sidelink TX BWP.
Abstract:
Various embodiments herein provide techniques for transport block size (TBS) determination for communication on a physical sidelink shared channel (PSSCH). The embodiments may be used by vehicle-to-everything (V2X) user equipments (UEs). Other embodiments may be described and claimed.