Abstract: Apparatuses, methods, and systems are disclosed for determining a time-frequency resource for transmitting and/or receiving using a system parameter. One apparatus (200) includes a receiver (212) that receives (702) system information on a time-frequency resource. The time-frequency resource is determined by a system parameter, and the system parameter includes a system operation mode.

Abstract: Apparatuses, methods, and systems are disclosed for carrier determination. One apparatus includes a processor that determines a first carrier of multiple carriers for a first device to transmit control information. The apparatus also includes a transmitter that transmits, to the first device, a first physical control signal indicating the first carrier, wherein the first physical control signal further indicates an interlace index for transmitting control information. The apparatus includes a receiver that receives control information from the first device on the first carrier.

Abstract: Apparatuses, methods, and systems are disclosed for device-to-device transmission. One apparatus includes a processor that generates a first signal indicating a first sequence and a first resource pool. Transmission of the first sequence within the first resource pool indicates a behavior of a first device that transmits the transmission of the first sequence. Moreover, the first resource pool is configured for use by multiple devices. The apparatus also includes a transmitter that transmits the first signal to the first device.

Abstract: Apparatuses, methods, and systems are disclosed for determining a beam for preamble transmission. One apparatus (200) includes a processor (202) that determines (702) a beam from multiple beams for preamble transmission. In response to the multiple beams including one or more beams configured with a contention-free resource, the one or more beams configured with a contention-free resource have a higher priority than other beams of the multiple beams.

Abstract: Apparatuses, methods, and systems are disclosed for hybrid automatic repeat request acknowledgment bundling. One apparatus includes a processor that generates a hybrid automatic repeat request acknowledgment bundle for transmission in a first available feedback resource. In such an apparatus, the hybrid automatic repeat request acknowledgment bundle includes a first number of hybrid automatic repeat request acknowledgements of first hybrid automatic repeat request acknowledgments, and the number of hybrid automatic repeat request acknowledgments is less than a threshold number of hybrid automatic repeat request acknowledgments. The apparatus also includes a transmitter that transmits the hybrid automatic repeat request acknowledgment bundle in the first available feedback resource.

Abstract: Methods and apparatuses for indicating a frequency offset of a non-anchor carrier are disclosed. A method comprising: transmitting a broadcast signal on an anchor carrier and transmitting system information on a non-anchor carrier, wherein the broadcast signal includes a frequency offset of the non-anchor carrier to the anchor carrier.

Abstract: Apparatuses, methods, and systems are disclosed for data acknowledgment. One apparatus includes a transmitter that transmits data to a device. The apparatus may include a processor that determines a response window having multiple subframes for receiving an acknowledgement corresponding to the data. The apparatus may include a receiver that receives the acknowledgement within the response window.

Abstract: Method and apparatus for reduction of latency between the time when packets arrive at Layer 1 and the time when resource is selected for transmission are disclosed. One method of the apparatus for latency reduction includes excluding resource from a resource set for packets transmission on SL based on at least one of parameters which are determined according to a latency requirement for the packets, wherein, the parameters comprise a required percentage of the candidate resource in the resource set, maximum power threshold of interference signal, and maximum number of times for increasing power threshold of interference signal.

Abstract: Methods and apparatuses for transmitting a control message are disclosed.

Abstract: The present application relates to method and apparatus for fallback operation for semi-static HARQ-ACK codebook determination. One embodiment of the present disclosure provides an apparatus comprising: a receiver that receives at least one down-link (DL) transmission within a DL association set; a processor that determines whether to use a fallback hybrid automatic repeat request acknowledgement (HARQ-ACK) transmission; and a transmitter that transmits a first HARQ-ACK codebook on a first resource for the DL association set in response to the fallback HARQ-ACK transmission being used or a second HARQ-ACK codebook on a second resource for the DL association set in response to the fallback HARQ-ACK transmission not being used.

Abstract: Methods and apparatus for UE handover are disclosed. One method of a UE comprising receiving a handover configuration related to a conditional handover command including at least one handover condition and a plurality of candidate cells, wherein the handover condition is configured per candidate cell; and selecting a target cell from the plurality of candidate cells in response to the target cell meeting the corresponding handover condition. The methods and apparatus herein not only increase the likelihood of a successful handover while the power consumption and/or processing time for the UE are acceptable, the processing resource is also saved for eNB.

Abstract: Method and apparatus for resource collision avoidance on sidelink are disclosed. One method of apparatus includes determining reserved resource on SL for a following SL transmission; transmitting information of the reserved resource to a mode 4 UE in a resource reservation field in SCI. Further, the reserved resource on SL is determined according to DCI received from a base station. Further, a resource guarantee indication, which indicates whether the reserved resource indicated in the resource reservation field in the SCI can be occupied by the mode 4 UE, is transmitted to the mode 4 UE.

Abstract: Apparatuses, methods, and systems are disclosed for determining a discovery announcement pool. One method (600) includes receiving (602) multiple discovery announcement pools. The multiple discovery announcement pools include different discovery signal transmission bandwidths, different numbers of transmission subframes, or a combination thereof. The method (600) includes determining (604) a first discovery announcement pool of the multiple discovery announcement pools. The method (600) includes transmitting (606) a discovery announcement signal using the first discovery announcement pool.

Abstract: The present application is related to a method and apparatus for determining a hybrid automatic repeat request-acknowledge (HARQ-ACK) codebook for carrier aggregation (CA). A method for determining a HARQ-ACK codebook for CA includes receiving a first control signal on a carrier within a carrier group in a slot, wherein the first control signal includes an indicator for indicating whether the carrier is a last scheduled carrier of the carrier group for downlink transmissions. The method further includes transmitting a hybrid automatic repeat request acknowledgement (HARQ-ACK) codebook corresponding to the downlink transmissions in the slot for the carrier group, wherein, based on the first control signal, one or more HARQ-ACK bits for the last scheduled carrier are arranged at the end of the HARQ-ACK codebook. The present application reduces signaling overhead for a HARQ-ACK codebook and avoids misunderstanding between a base unit and a remote unit when determining the HARQ-ACK codebook for CA.

Abstract: The present disclosure is directed to a method and apparatus for transmission resource selection. According to an embodiment of the present disclosure, a method includes: selecting a transmission resource for a sidelink transmission; generating an indication signaling for indicating the sidelink transmission on the selected transmission resource; and transmitting the indication signaling on a detection resource, which is a time-frequency resource prior to the selected transmission resource. Embodiments of the present disclosure solve the technical problem concerning the transmission resource selection in a V2X system.

Abstract: Methods and apparatus for SL SRS transmission are disclosed. One method of a relay/remote UE comprises transmitting a SRS on a SL. The SRS is based on a SL SRS configuration which configures location information of the SRS in time-frequency domain. The transmission of SRS can be either periodic or aperiodic. Further, the SRS is a single SRS or a set of SRS.

Abstract: Apparatuses, methods, and systems are disclosed for transmitting and/or receiving feedback. One apparatus (300) includes a transmitter (310) that transmits (802) multiple data blocks. The apparatus (300) includes a receiver (312) that receives (804) a feedback message in a time slot. The feedback message corresponds to the multiple data blocks. The feedback message includes one or more sequences that indicate feedback information, wherein the feedback information corresponds to the multiple data blocks.

Abstract: Apparatuses and methods are disclosed for sidelink (SL) communication. One method of apparatus includes determining a first resources pool for SL communication which includes SL transmission resources and SL reception resources, and transmitting resources information to a relay UE. Wherein, the first resources pool is a SL subframes pool or a SL SPS configurations pool, and the resources information is the first resource pool or a resource pair selected by the apparatus for SL communications.

Abstract: Apparatuses, methods, and systems are disclosed for interlace determination. One apparatus includes a processor that determines a system bandwidth including multiple interlaces. Each interlace of the multiple interlaces includes a set of physical resource blocks (“PRBs”) that are uniformly spaced in frequency. The processor also determines a first set of interlaces of the multiple interlaces for a first device. The first set of interlaces includes one or more interlaces. The apparatus includes a transmitter that transmits a first signal to the first device. The first signal indicates the first set of interlaces, and a number of bits of the first signal is less than a number of interlaces of the multiple interlaces.

Abstract: Apparatuses, methods, and systems are disclosed for sidelink control information indication. One apparatus includes a receiver that receives a second control information message from a remote unit over sidelink communication. Here, the second control information message is in response to the remote unit receiving one or more data processes scheduled by a first control information message from a relay unit. The apparatus also includes a processor that determines a transmission-reception pattern for the sidelink communication and generates an indicator of the determined transmission-reception pattern. The apparatus further includes a transmitter that transmits the indicator of the determined transmission-reception pattern to the remote unit in a third control information message.