Abstract:
Uplink transmission in shorted transmission time intervals is provided herein. A method can comprise receiving, by a device comprising a processor, a first downlink control information related to scheduling a first uplink data transmission via a first transmission time interval. The method can also comprise receiving, by the device, a second downlink control information related to scheduling a second uplink data transmission via a second transmission time interval, wherein the second uplink data transmission overlaps at least a symbol with the first uplink data transmission. The method can also transmitting, by the device, the first uplink data transmission or the second uplink data transmission based on prioritization determined based on a first length of the first transmission time interval and a second length of the second transmission time interval.
Abstract:
A method and apparatus are disclosed for improving a transmission using a configured resource in a wireless communication system. In one embodiment, the method includes an uplink grant is available for the UE in a TTI, wherein the UE does not have data available for transmission. The method further includes the UE transmitting a physical control information on a data channel according to the uplink grant if the physical control information needs to be transmitted in the TTI. The method also includes the UE skipping the uplink grant if the physical control information does not need to be transmitted in the TTI.
Abstract:
A method and apparatus for using a configured resource by a user equipment in a wireless communication system. In one embodiment, the method includes receiving a signaling to configure an uplink resource which is available in multiple transmission time intervals (TTIs), including a first TTI and a second TTI. The method includes performing a transmission using the uplink resource in the first TTI in response to reception of the signaling and not in the second TTI which is not corresponding to reception of the signaling, wherein the UE has no data available for transmission.
Abstract:
In an example, a User Equipment (UE) receives a message associated with Physical Downlink Shared Channel (PDSCH) parameter configuration. The message includes a first parameter indicating a first list of entries associated with time resource allocation for multiple PDSCHs, a second parameter indicating reception of multiple repetitions for a single PDSCH, and a third parameter indicating a second list of entries associated with time resource allocation. Each entry in the second list indicates a single time resource allocation. If the UE receives a Downlink Control Information (DCI) indicative of a first entry in the first list, the UE receives a plurality of PDSCHs based on a plurality of time resource allocations indicated by the first entry. A first repetition number for the plurality of PDSCHs is determined to be one. If the UE receives a DCI indicative of a second entry in the second list, the UE receives one or more PDSCHs with repetition based on a single time resource allocation indicated by the second entry. A second repetition number for the one or more PDSCHs is determined based on the second parameter.
Abstract:
Methods, systems, and apparatuses for Sidelink Discontinuous Reception (SL DRX) in a wireless communication system to avoid ambiguity on slot offset calculations on SL DRX. A method for a UE comprises performing a SL communication associated with a destination Identity (ID), having a SL DRX configuration associated with the SL communication, wherein the SL DRX configuration comprises at least an on-duration timer and a DRX cycle, deriving a first offset associated with the SL communication based on the destination ID and the DRX cycle, deriving a second offset associated with the SL communication based on the destination ID and a number of slots per subframe, starting the on-duration timer after a time period determined based on the second offset from the beginning of a subframe, wherein the subframe is determined based on at least the first offset, and monitoring Sidelink Control Information (SCI) when the on-duration timer is running.
Abstract:
Methods and apparatuses for handling partial sensing and discontinuous reception for sidelink communication to reduce potential latency due to additional sensing and to improve resource utilization efficiency. Various embodiments can comprise a first device performing sidelink communication to at least a second device, or a second device in a sidelink resource pool, and triggering to perform resource selection for a sidelink data at a timing, wherein the first device (already) receives or monitors sidelink control information for a (contiguous) time duration before the timing. The first device can perform sensing for a contiguous sensing duration after the timing, determine or select a first sidelink resource from a set of sidelink resources, and perform a first sidelink transmission on the first sidelink resource for transmitting the sidelink data to the second device.
Abstract:
A method and apparatus are disclosed from the perspective of a first device for performing sidelink communication. In one embodiment, the method includes the first device being configured with network scheduling mode for sidelink by a base station. The method further includes the first device being configured with a first set of resources with a first time pattern for sidelink transmission through a dedicated signaling. The method also includes the first device using the first set of resources to perform sidelink transmission when the first device does not detect beam failure. Furthermore, the method includes the first device detecting a beam failure between the first device and the base station. In addition, the method includes the first device using the first set of resources to perform sidelink transmission to a second device when the beam failure is not resolved.
Abstract:
In an example, a User Equipment (UE) operates with shared spectrum channel access on a carrier and/or a cell. The UE receives a configuration for configuring configured grants for uplink transmission in a bandwidth part (BWP). The configured grants include a first configured grant and a second configured grant. The UE configures a first minimum Downlink Feedback Indication (DFI) time delay for the first configured grant according to the configuration. The first minimum DFI time delay is for validation of Hybrid Automatic Repeat Request (HARQ) information in response to one or more first uplink transmissions. The UE configures a second minimum DFI time delay for the second configured grant according to the configuration. The second minimum DFI time delay is for validation of HARQ information in response to one or more second uplink transmissions. The UE does not expect the second minimum DFI time delay to have a different value than the first minimum DFI time delay.
Abstract:
In an example, a second UE receives a first SCI and a second SCI from a first UE in a first slot. A groupcast sidelink transmission is scheduled by the first SCI and the second SCI. The second SCI indicates a location indication, associated with a location of the first UE, and a communication range. A PSFCH resource is determined based upon the first SCI. The second UE doesn't transmit a NACK indication on the PSFCH resource if location information of the second UE is available, the groupcast sidelink transmission isn't successfully decoded, and the second UE is outside the communication range. The second UE transmits the NACK indication on the PSFCH resource if the location information isn't available and the groupcast sidelink transmission isn't successfully decoded, or if the location information is available, the groupcast sidelink transmission isn't successfully decoded, and the second UE is within the communication range.
Abstract:
A method and apparatus are disclosed from the perspective of a device to perform sidelink transmission. The method includes the device being in RRC (Radio Resource Control)-connected mode in Uu link. The method also includes the device being configured to use at least DL (Downlink) pathloss for sidelink power control. The method further includes the device deriving a first DL pathloss value for determining an uplink transmit power of one specific kind of uplink transmission. In addition, the method includes the device determining or deriving a sidelink transmit power based on the first DL pathloss value. Furthermore, the method includes the device performing a sidelink transmission to other device(s) with the sidelink transmit power.