Abstract: Techniques and apparatuses are described for resource block-level index modulation. In aspects, a wireless transmitter modulates a first portion of data for a wireless receiver to provide modulation symbols that correspond to the first portion of the data. The wireless transmitter also selects, based on a value of a second portion of the data, respective index locations for one or more resource blocks by which to transmit the modulation symbols. The wireless transmitter then transmits the modulation symbols to the wireless receiver using the one or more resource blocks having the respective index locations to convey the first portion of the data and the second portion of the data to the wireless receiver. By so doing, the wireless transmitter conveys the second portion of the data without using additional time-frequency resources of a communication channel, which can be useful when concurrently transmitting small amounts of data to many wireless receivers.

Abstract: In aspects, a non-terrestrial communication system communicates with a user equipment, UE, using repetitive communications. The non-terrestrial communication system determines (905, 940) a repetition configuration for repetitive communications with the UE and indicates (910, 915) the repetition configuration to the UE. The non-terrestrial communication system communicates (920) with the UE using the repetitive communications in accordance with the repetition configuration.

Abstract: This document describes techniques for flexible frequency band pairing for satellite communications. In aspects, a non-terrestrial communication system uses multiple frequency bands for a wireless link between a user equipment, UE, and a satellite of the non-terrestrial communication system. The non-terrestrial communication system determines to utilize two different frequency bands the wireless link between the satellite and the UE, the two different frequency bands being defined by a governing entity. In response, the non-terrestrial based communication system selects a first defined frequency band for downlink communications from the satellite to the UE and a second defined frequency band for uplink communications from the UE to the satellite. The non-terrestrial communication system then directs the satellite and the UE to communicate via the wireless link by using the first defined frequency band for the downlink communications and the second defined frequency band for the uplink communications.

Abstract: Techniques and apparatuses are described for intra-user equipment-coordination set (intra-UECS) communication via an adaptive phase-changing device (APD) are described. In aspects, a base station selects an APD for use by a first user equipment-coordination set, UECS), in an intra-UECS communication path. The base station communicates APD information about the APD to a first coordinating user equipment, UE, of the first UECS. In aspects, the base station the apportions APD-access to the APD for the first UECS and indicates the apportioned APD-access to the first coordinating UE of the first UECS.

Abstract: A user-equipment-coordination set in a cellular network includes multiple UEs for performing coordinated radar sensing. A first UE determines a configuration to coordinate other UEs to detect an object. The first UE uses the configuration to configure a second UE to transmit a first radar signal and a third UE to detect the first radar signal. The first UE receives first radar signal samples from the third UE based on the third UE receiving the first radar signal in multiple reflection states. The first UE filters the first radar signal samples to remove samples associated with interference from the first radar signal received in a first reflection state. The first UE determines object location information based on at least the filtered first radar signal samples.

Abstract: To transmit industrial Internet of Things (HOT) data on a communication channel, a user device receives (402), from a base station, one or more configured uplink grants for transmitting data in an unlicensed spectrum, prioritizes (404) one of the one or more configured uplink grants, and generates (406) a data packet for the prioritized configured uplink grant. Additionally, the UE performs (408) a listen-before-talk (LBT) procedure with the base station. In response to determining the LBT procedure has failed, the UE identifies (416) another configured grant opportunity to transmit the data packet, and transmits (418), to the base station, a first transmission for the data packet via the other configured grant opportunity.

Abstract: This document describes methods, devices, systems, and means for a peer-to-peer Citizens Broadband Radio Service, CBRS, grant. A base station sends a CBRS spectrum request to a Spectrum Access System, SAS, receives a CBRS spectrum grant from the SAS, and transmits a configuration for peer-to-peer, P2P, CBRS communication to at least a first UE that is effective to enable the first UE and a second UE to conduct P2P communication based on the configuration for P2P CBRS communication.

Abstract: This document describes techniques and apparatuses that include a three-dimensional (3D) antenna module for transmitting or receiving electromagnetic millimeter waves (mmWaves). In general, a user equipment (UE) may include the 3D antenna module in a corner of a housing of the UE. The 3D antenna module may include three antenna panels that are generally planar and generally orthogonal to three respective axes of a Cartesian-coordinate system. The 3D antenna module may transmit and receive the electromagnetic mmWaves as part of a wireless link between the UE and another device, such as a satellite that is part of a wireless-communication network. In general, the 3D antenna module may mitigate propagation losses and allow the UE to maintain a link-budget for the wireless link.

Abstract: A method in a user equipment (UE) having a first subscriber identity module for connecting to a first mobile network according to a first subscription and a second subscriber identity module for connecting to the first mobile network or a second mobile network according to a first second includes determining, by processing hardware, a preference of how the first mobile network is to process downlink data for the UE when the UE transitions from the first subscription to the second subscription (1102); and transmitting, by the processing hardware and to the first mobile network, an indication of the preference, to cause the first mobile network to process the downlink data for the UE based at least in part on the preference (1104).

Abstract: Techniques and apparatuses are described for enhanced uplink spectrum sharing. A base station communicates, to a user equipment (UE) an air interface resource configuration for a second air interface resource allocated to a second cell that uses a second radio access technology (RAT) and implemented by the base station. The base station receives a first air interface resource configuration for a first air interface resource allocated to a first cell that uses a first RAT, where the first air interface resource configuration differs from the second air interface resource configuration. In aspects, the base station communicates the first air interface resource configuration to the UE. Based on receiving a low-utilization indication for the first air interface resource, the base station directs the UE to utilize the first air interface resource for transmitting uplink communications using the second RAT.

Abstract: This document describes methods, devices, systems, and means for beam failure recovery for wireless communication in an active coordination set (ACS) by a user equipment (UE) in which the UE receives a beam-failure-recovery (BFR) Random Access Channel (RACH) configuration including multiple candidate beam configurations, each candidate beam configuration comprising a candidate BFR sub-beam configuration for each base station in the ACS. The UE detects a beam failure with the ACS and determines a respective link-quality metric for each of the received candidate beam configurations in the BFR RACH configuration. Based on the determined link-quality metrics, the UE selects a candidate beam to use for the wireless communication, and transmits a RACH message that includes an indication of the selected candidate beam, the transmitting being effective to direct the base stations in the ACS to use the selected candidate beam for the wireless communication.

Abstract: Techniques and apparatuses are described for adaptive phase-changing device sharing and handover. In aspects, a second base station shares an adaptive phase-changing device (APD), with a first base station. The second base station determines to use an APD in a communication path for a second wireless link with a second user equipment. The second base station identifies a first base station using the APD in a communication path for a first wireless link with a first UE. Based on identifying the first base station using the APD, the second base station obtains apportioned access to the APD and configures a surface of the APD based on the apportioned access. The second base station uses the APD in a communication path for the second wireless link with the second UE based on the apportioned access.

Abstract: A user device (UE) equipped with a first universal subscriber identity module (USIM) for communicating with a first cellular network and a second USIM for communicating with a second cellular network, wherein the first cellular network includes a first radio access network (RAN) and the second cellular network includes a second RAN, determines whether the first cellular network supports access to a gateway of the second cellular network (402), and when the first cellular network supports the access: (i) connects to the second cellular network via the first RAN and the gateway (408), and (ii) prevents the second cellular network from transmitting information to the UE via the second RAN (410).

Abstract: Techniques and apparatuses are described for radio access technology identifiers. In aspects, a base station receives air interface resource prospective usage information associated with communications over a first wireless link of at least two wireless links that use different Radio Access Technologies (RATS). The base station then allocates the sharable air interface resource between the at least two wireless links by analyzing the air interface resource prospective usage information. In aspects, the base station transmits a RAT-identifier-presence indicator that communicates a presence of a RAT identifier by indicating one or more downlink air interface resources used to transmit the RAT identifier, where the RAT identifier indicates the allocation of the sharable air interface resource between the at least two wireless links. The base station then transmits the RAT identifier using the one or more downlink air interface resources indicated by the RAT-identifier-presence indicator.

Abstract: This document describes methods, devices, systems, and means for enhanced beam searching for an active coordination set. A user equipment (110) receives an active-coordination-set beam-sweep (602) including multiple time slots (610), each of the multiple time slots including one or more candidate beams. The user equipment (110) determines a respective link-quality metric for each of the received one or more candidate beams in each of the time slots. Based on the link-quality metrics, the user equipment (110) selects the one or more candidate beams in a time slot (610) to use for wireless communication. The user equipment (110) transmits a beam-acquired indication (620) at a first time offset (604) after the time slot (610) in which the selected one or more candidate beams are received, the transmitting directing the base stations (120) to use the selected one or more candidate beams for the wireless communication.

Abstract: Techniques and apparatuses are described for adapting an end-to-end, E2E, machine-learning, ML, configuration for processing communications transferred through an E2E communication. A network entity directs a user equipment (UE) and a base station participating in the E2E communication to implement the E2E communication by forming at least a portion of an E2E deep neural network, DNN, based on a first E2E ML configuration. The network entity determines to update the first E2E ML configuration based on a change in a participation mode of an edge compute server (ECS) in the E2E communication. The network entity identifies a second E2E ML configuration based on the change in participation mode and directs the UE or the base station to update the portion of the E2E DNN using the second E2E ML configuration.

Abstract: Techniques and apparatuses are described for user equipment-coordination set (UECS) federated learning for deep neural networks (DNNs). A coordinating user equipment (UE) in a UECS communicates (1505), to at least a subset of UEs in the UECS, one or more update conditions that indicate when to generate updated ML configuration information for a respective DNN that processes UECS communications. The coordinating UE then receives (1510) one or more reports that include the updated ML configuration information from respective UEs of at least the subset of UEs. In aspects, the respective UE generates the updated ML configuration information using a training procedure and local input data. The coordinating UE determines (1515) a common UECS ML configuration by applying federated learning techniques to the updated ML configuration information and directs (1520) at least one UE in the subset to update the respective DNN using the at least one common UECS ML configuration.

Abstract: Two devices in wireless communication implement a soft transmission feedback scheme. A data-sending device wirelessly communicates a first transmission representing a data block and generated using one or more neural networks to a data-receiving device, which processes the first transmission using one or more neural networks to attempt to recover the data block, as well as to generate transmission feedback indicating a status of the recovery attempt. The feedback is used by one or more neural networks to generate a second transmission that is wirelessly communicated to the data-sending device. One or more neural networks process the second transmission to generate a retransmit control signal. One or more neural networks selectively include at least a portion of the data block for retransmission in a third transmission to the data-receiving device based on the retransmit control signal.

Abstract: In a method in a base station configured to communicate with a user device located in a coverage area of a cell associated with the base station, a first random access message of a RACH procedure is received (320, 420A, 420B, or 520) from the user device. The method also includes determining (425A, 426B, or 526), by processing hardware of the base station, that the first random access message is associated with a first network slice, at least in part by determining that the user device transmitted the first random access message using a RACH configuration associated with the first network slice. The method also includes transmitting (330, 430A, 430B, 530) to the user device a second random access message of the RACH procedure. The second random access message includes information regarding network support for the first network slice.

Abstract: A method in a base station configured to communicate with a user device using a first RAT and/or a first radio resource includes receiving (422 or 521) a first random access message from the user device via first RACH resources, determining (426 or 526) that the first random access message is requesting RAT and/or radio resource availability, and transmitting (430 or 529) to the user device a second random access message indicating whether a second RAT and/or a second radio resource is available to the user device.