Abstract: Disclosed herein are timing determination techniques for 5G radio access network (RAN) cells. According to various such techniques, during a random access procedure, a user equipment (UE) may receive a grant of resources for an uplink (UL) data transmission in a random access response (RAR) message. The UE may identify a scheduled slot for the UL data transmission based on a received slot of the RAR message and an applicable slot offset value. The applicable slot offset value may indicate a number of slots by which the received slot precedes the scheduled slot. The applicable slot offset value may be identified using the various techniques described herein.

Abstract: In one aspect, an example method includes monitoring, by a hub station, a first channel activity level associated with a first channel of a plurality of channels within a particular frequency range. The hub station communicates with a low-energy device using the first channel. The method includes determining that the first channel activity level satisfies a threshold activity level and switching to a second channel of the plurality of channels to communicate with the low-energy device. The method includes notifying the low-energy device that the hub station switched to the second channel by sending an acknowledgement message to the low-energy device on the second channel in response to receiving a message from the low-energy device on the second channel. The message is sent to the hub station on the second channel after at least one unsuccessful attempt to send the message to the hub station on the first channel.

Abstract: Systems and methods are disclosed herein for determining Non-Zero Power (NZP) Channel State Information Reference Signal (CSI-RS) resources to be used for channel and interference measurement. In some embodiments, a method performed by a wireless device comprises receiving, from a network node, a semi-static indication of one or more first sets of NZP CSI-RS resources for channel measurement and a semi-static indication of one or more second sets of NZP CSI-RS resources for interference measurement. The method further comprises receiving, from the network node, one or more dynamic indications that indicate a first set of NZP CSI-RS resources from the one or more first sets of NZP CSI-RS resources to be used by the wireless device for channel measurement and a second set of NZP CSI-RS resources from the one or more second sets of NZP CSI-RS resources to be used by the wireless device for interference measurement.

Abstract: Aspects of the present disclosure provide a self-contained subframe structure for time division duplex (TDD) carriers. Information transmitted on a TDD carrier may be grouped into subframes, and each subframe can provide communications in both directions (e.g., uplink and downlink) to enable such communications without needing further information in another subframe. In one aspect of the disclosure, a single subframe may include scheduling information, data transmission corresponding to the scheduling information, and acknowledgment packets corresponding to the data transmission. Furthermore, the subframe may additionally include a header and/or a trailer to provide certain bi-directional communications functions.

Abstract: Provided are a method by which a first device performs wireless communication, and an apparatus supporting same.

Abstract: A base station may transmit a first downlink control information (DCI) scheduling a physical downlink shared channel (PDSCH). The first DCI may comprise a feedback timing indicator field. In response to the feedback timing indicator field indicating not to receive a feedback for the PDSCH before transmitting a second DCI, the base station may start a discontinuous reception (DRX) timer with a first value. The base station may transmit, via a downlink control channel, the second DCI while the DRX timer is running.

Abstract: Systems and methods are disclosed herein for determining Non-Zero Power (NZP) Channel State Information Reference Signal (CSI-RS) resources to be used for channel and interference measurement. In some embodiments, a method performed by a wireless device comprises receiving, from a network node, a semi-static indication of one or more first sets of NZP CSI-RS resources for channel measurement and a semi-static indication of one or more second sets of NZP CSI-RS resources for interference measurement. The method further comprises receiving, from the network node, one or more dynamic indications that indicate a first set of NZP CSI-RS resources from the one or more first sets of NZP CSI-RS resources to be used by the wireless device for channel measurement and a second set of NZP CSI-RS resources from the one or more second sets of NZP CSI-RS resources to be used by the wireless device for interference measurement.

Abstract: Methods, systems, and devices for wireless communications are described. Generally, the described techniques provide for reducing the overhead associated with reporting feedback, such as hybrid automatic repeat request (HARQ) feedback. A user equipment (UE) may receive a configuration message from a base station indicating that the UE is to request resources for transmitting negative acknowledgment (NACK) feedback for a downlink transmission. If the UE fails to receive or decode the downlink transmission, the UE may request resources from the base station on which to transmit the NACK feedback for the downlink transmission. Because the UE may be configured to request resources on which to transmit the NACK feedback, the UE may avoid transmitting HARQ feedback for every downlink transmission from the base station. Thus, the base station may avoid allocating resources for HARQ feedback from the UE for every downlink transmission, and the overhead of reporting HARQ feedback is reduced.

Abstract: The disclosure provides a method and device in communication node used for wireless communication. A first node receives a first signaling, transmits a first bit block set in a first air interface resource block, receives a second signal in a second air interface resource block, and transmits a third signal in a third air interface resource block. The first signaling is used for determining the first air interface resource block, and the first air interface resource block is used for determining the second air interface resource block; the second signal and the third signal indicate whether the first bit block set is correctly received respectively; the first signaling indicates a first time interval. The above method simplifies the design of downlink signalings for allocation of sidelink resources and reduces signaling overheads.

Abstract: A method for wireless communication performed by a user equipment (UE) includes receiving, from a base station on a granting group common (GC)-physical downlink control channel (PDCCH), a multimedia broadcast multicast service (MBMS) downlink grant that schedules an MBMS transmission at each UE of a group of UEs that includes the UE. The method also includes receiving, from the base station on a triggering GC-PDCCH, a message indicating respective feedback resources for each UE of the group of UEs. The method further includes receiving, from the base station, the MBMS transmission. The method still further includes transmitting, to the base station via the feedback resources, a feedback report based on receiving the MBMS transmission.

Abstract: This disclosure provides systems, methods, and apparatuses, including computer programs encoded on computer storage media, for enabling a wireless system implementing multicast transmissions to control feedback reports from multiple user equipments (UEs) and to address feedback codebook misalignment issues. In particular, aspects provide for multicast transmission grants including multiple feedback timing indicators (K1) in which the multicast transmission grants are configured to configure different UEs for multicast transmission feedback reporting in which feedback codebooks transmitted in various uplink control transmission occasions from the different UEs have a same size. Other aspects and features are also claimed and described.

Abstract: A method and apparatus for shifting boundary of an uplink (UL) subframe and/or UL slot in a wireless communication system is provided. A user equipment (UE) receives information on a timing advance (TA) offset from the network, and shifts the boundary of the UL subframe and/or the UL slot based on a TA and the TA offset. The UE transmits a UL signal as a response to a downlink (DL) signal in the shifted UL subframe and/or UL slot.

Abstract: Provided is s a method for a base station to allocate a time interval resource to transceive a downlink data channel (PDSCH) or an uplink data channel (PUSCH). The method include allocating a time interval resource for each OFDM symbol on the basis of a slot or a mini-slot, transmitting, to a terminal, time interval resource configuration information including OFDM symbol allocation data for OFDM symbols used for data channel transception in the slot or the mini-slot, and transmitting, to the terminal, control information selecting one of the symbol allocation data included in the time interval resource configuration information.

Abstract: Embodiments of the present invention provide a communication method and apparatus, and a computer-readable storage medium, to resolve a prior-art problem that data sending or data receiving of a terminal device is delayed. The method includes: if no monitoring occasion of a wake-up signal exists in a first time window, or a first time window includes no monitoring occasion of a wake-up signal in at least one search space set configured for a terminal device, monitoring a physical downlink control channel within an on duration time period of a discontinuous reception DRX state, where the first time window is a time window for monitoring the wake-up signal, the wake-up signal indicates the terminal device to monitor the physical downlink control channel within the on duration time period, and the first time window is prior to the on duration time period.

Abstract: Methods, systems, and devices for wireless communications are described. A transmitter may identify a set of one or more packets for broadcast to a set of one or more user equipments (UEs) and transmit a set of one or more network encoded packets based on the set of one or more packets. The UEs may each rebroadcast one or more successfully received network encoded packets via sidelink communications. Each UE may report to the original transmitter via feedback indicating the one or more successfully received packets at each UE. The transmitter may generate an updated set of one or more network encoded packets based on the feedback from the UEs. The transmitter may continue to update and transmit the updated set of one or more network encoded packets based on feedback until the transmitter determines that each UE has recovered the set of one or more packets.

Abstract: Methods and apparatus for managing radio device transmitters, beams, and receivers within a power-limited system. In one embodiment, the methods and apparatus utilize so-called “quasi-licensed” CBRS (Citizens Broadband Radio Service) wireless spectrum in conjunction with a distributed controller architecture that dynamically allocates frequency, base station, and transmit/receive beam resources for delivery of services to a number of installed fixed wireless apparatus (FWA) at user or subscriber premises. The FWA include radio path controller logic that obtains signal data via its antennae and radio head, and transmits the data to a network centralized controller that determines the resource allocation and timing (e.g., via a slotted TDD medium) for service delivery to each FWA. As such, the base stations do not determine the allocations as in the prior art, and multiple power-limited base stations can transmit signals to a single FWA to achieve greater coverage area and/or receive aggregated power.

Abstract: Provided are a PDCCH monitoring method and device of a DRX-configured terminal in a wireless communication system. In the method, if a monitoring occasion is present in a monitoring window for monitoring DCI (WUS) comprising a wake-up indication, the WUS is monitored in the monitoring occasion and, if the WUS is detected, the relevant operation is performed in a DRX ON duration on the basis of same. The WUS can indicate whether or not to wake up from a plurality of DRX cycles. Also, the WUS can indicate various configurations in accordance with the length of the DRX cycles. If the monitoring occasion is not present in the monitoring window, the terminal wakes up from a DRX cycle linked to the monitoring occasion and performs PDCCH monitoring for a general DCI detection not comprising a wake-up indication.

Abstract: A method and apparatus for performing transmission in a wireless communication system is provided. A narrowband internet-of-things (NB-IoT) user equipment (UE) transmits a physical uplink shared channel (PUSCH) to a network by using a first resource unit, and transmits an acknowledgement/non-acknowledgement (ACK/NACK) to the network by using a second resource unit. The first resource unit for PUSCH transmission consists of a first number of resource elements (REs) within a first tone in frequency domain and a first time interval in time domain. The second resource unit for ACK/NACK transmission also consists of a second number of REs within a second tone in frequency domain and a second time interval in time domain. The second number is smaller than the first number.

Abstract: A method in a User Equipment (UE) for activation or deactivation of a carrier in a communication network supporting carrier aggregation is provided. The method comprises: receiving a control signal for a transmission of a carrier activation or deactivation message command, the control signal including an indication of a first resource for the UE to transmit a feedback message to a network node; receiving a carrier activation or deactivation message; wherein the carrier activation or deactivation message comprises an indication of a second resource for the UE to transmit the feedback message to the network node; decoding the received carrier activation or deactivation message; and sending the feedback message using one of the first resource and the second resource based at least on a result of the decoding of the carrier activation or deactivation message. A UE for performing this method is also provided.

Abstract: The present invention relates to a resource allocation method of a vehicle-to-everything (V2X) transmission terminal in a wireless communication system and an apparatus therefor. More specifically, the method comprises the steps of: transmitting, to a V2X receiving terminal, a first V2X signal for a V2X service; receiving, from the V2X receiving terminal, an acknowledgment/negative-acknowledgment (ACK/NACK) for a V2X signal; and, if the NACK is received from the V2X receiving terminal, allocating, for a second V2X signal, a second time-frequency resource reserved in association with a first time-frequency resource for the first V2X signal.