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 are related to new radio (NR) sidelink (SL) operation in the unlicensed spectrum. Specifically, various embodiments may relate to design parameters or implementations of a physical SL control channel (PSCCH) and/or physical SL shared channel (PSSCH) in such a network. Other embodiments may be described and/or claimed.
Abstract:
Various embodiments herein provide techniques related to resource selection for sidelink transmissions. In some embodiments, the resource selection procedure may related to identification of whether to use a first or second resource selection procedure. In some embodiments, the resource selection procedure may relate to removal of non-preferred resources from a list of candidate resources. Other embodiments may be described and/or claimed.
Abstract:
A user equipment (UE) configured for New Radio (NR) vehicle-to-everything (V2X) (NR V2X) sidelink transmission in a fifth generation (5G) network may determine a transport block size (TBS) for transmission of a transport block (TB) within a current sidelink slot. The UE is configured to encode a physical sidelink shared channel (PSCCH) for transmission within the current sidelink slot. The PSCCH may be encoded to include sidelink control information (SCI). The SCI may indicate a reservation of physical sidelink shared channel (PSSCH) resources within up to three sidelink slots including the current sidelink slot 102. To determine the TBS, the UE may determine number of resource elements (REs) within the current sidelink slot 102 that are available for transmission of the PSSCH by excluding certain REs of the current sidelink slot. For transmission of the TB within multiple transmission time intervals (TTIs), the UE may be configured to encode the SCI to indicate a reservation of PSSCH resources for each of the multiple TTIs within the current scheduling window.
Abstract:
Systems and methods of providing NR V2V communications are disclosed. Channel sensing is used by both UEs to determine sets of candidate resources, and subsequently select a resource, for PSCCH and PSSCH transmissions. The transmitting UE selects the PSCCH resource and transmits a scheduling request using the PSCCH resource, while the receiving UE selects a PSCCH and the PSSCH resource and transmits a scheduling grant in the PSCCH containing transmission parameters and the PSSCH resource to the transmitting UE. When the scheduling request contains the candidate resources for the PSCCH transmission, the receiving UE uses the intersection of the candidate resources for the PSCCH transmission and the candidate resources for transmission to determine the PSCCH and the PSSCH resource.
Abstract:
A user equipment (UE) can receive, from an eNodeB, a serving PLMN system information block (SIB)19 for a carrier frequency of a serving PLMN of the UE. The UE can acquire inter-frequency and inter-PLMN discovery system information acquisition assistance signaling information from the SIB19. The UE can process a non-serving PLMN SIB19 for one or more carrier frequencies of a non-serving PLMN using the inter-frequency and inter-PLMN discovery system information acquisition assistance signaling information. The UE can identify inter-frequency and inter-PLMN discovery announcement rate information and monitoring control configuration information for the one or more carrier frequencies of the non-serving PLMN to enable the UE to perform device-to-device (D2D) discovery with a UE in the non-serving PLMN according to the inter-frequency and inter-PLMN discovery and inter-PLMN discovery announcement rate information and monitoring control configuration information.
Abstract:
A computer-readable storage medium that stores instructions for execution by one or more processors of a user equipment (UE). configure the UE for NR communication. The instructions cause the UE to decode sidelink control information (SCI). The SCI includes scheduling information and priority information. The scheduling information indicates time resource assignment and frequency resource assignment for sidelink data communications using a physical sidelink shared channel (PSSCH). The instructions further cause the UE to detect that a transmission (Tx) of a first set of physical sidelink feedback channels (PSFCHs) would overlap in time with a reception (Rx) of a second set of PSFCHs. The first and second sets of PSFCHs include sidelink feedback control information for the sidelink data communications. The instructions further cause transmission of at least one PSFCH from the first set of PSFCHs or the second set of PSFCHs based on the priority information.
Abstract:
Embodiments of the present disclosure describe methods and apparatuses for sidelink control information for vehicle-to-vehicle communications.
Abstract:
Systems and methods of providing NR V2V communications are disclosed Channel sensing is used by both UEs to determine sets of candidate resources, and subsequently select a resource, for PSCCH and PSSCH transmissions. The transmitting UE selects the PSCCH resource and transmits a scheduling request using the PSCCH resource, while the receiving UE selects a PSCCH and the PSSCH resource and transmits a scheduling grant in the PSCCH containing transmission parameters and the PSSCH resource to the transmitting UE. When the scheduling request contains the candidate resources for the PSCCH transmission, the receiving UE uses the intersection of the candidate resources for the PSCCH transmission and the candidate resources for transmission to determine the PSCCH and the PSSCH resource.
Abstract:
A user equipment (UE) can receive, from an eNodeB, a serving PLMN system information block (SIB)19 for a carrier frequency of a serving PLMN of the UE. The UE can acquire inter-frequency and inter-PLMN discovery system information acquisition assistance signaling information from the SIB19. The UE can process a non-serving PLMN SIB19 for one or more carrier frequencies of a non-serving PLMN using the inter-frequency and inter-PLMN discovery system information acquisition assistance signaling information. The UE can identify inter-frequency and inter-PLMN discovery announcement rate information and monitoring control configuration information for the one or more carrier frequencies of the non-serving PLMN to enable the UE to perform device-to-device (D2D) discovery with a UE in the non-serving PLMN according to the inter-frequency and inter-PLMN discovery announcement rate information and monitoring control configuration information.