Abstract: Technology for a user equipment (UE) operable to perform adaptive time division duplexing (TDD) hybrid automatic repeat request (HARQ)-ACKnowledgement (ACK) reporting is described. The UE can implement an adaptive uplink-downlink (UL-DL) configuration received from an eNodeB. The UE can decode a downlink (DL) HARQ reference configuration received from the base station for a serving cell, wherein the DL HARQ reference configuration is for the implemented adaptive UL-DL configuration. The UE can decode a reference UL-DL configuration received from the base station via a system information block (SIB). The UE can encode HARQ-ACK feedback for transmission on an uplink channel of the serving cell in accordance with the DL HARQ reference configuration. The UE can perform uplink scheduling and the HARQ-ACK feedback based on the reference UL-DL configuration received from the base station via the SIB.

Abstract: Implementations of this disclosure generally may relate to the field of wireless communications. More specifically, implementations described in this disclosure relate to different 3GPP LTE and LTE-A system enhancements to address the issue and support reliable V2X operation in the high mobility environments. Several solutions to improve the V2X system performance in the high mobility vehicular channel propagation conditions are described. Some aspects relate to the suggestion of a new DMRS patterns within individual subframes that promote more accurate CFO estimation. Moreover, another aspect provides DMRS mapping or puncturing patterns to transmit individual DMRS in a periodic pattern on respective OFDM/SC-FDMA symbols so that they do not occupy all REs of the OFDM/SC-FDMA symbols, respectively.

Abstract: Apparatuses, systems and methods associated with asynchronous synchronization reference source selection and reselection for wireless communication devices are disclosed herein. In embodiments, one or more non-transitory, computer-readable media having instructions stored thereon, wherein the instructions, in response to execution by a user equipment (UE), cause the UE to establish a sidelink connection with a first synchronization reference (SyncRef) UE, and monitor for physical sidelink broadcast channel (PSBCH) synchronization signals from a second SyncRef UE, wherein the UE is to drop one or more subframes of data reception of the sidelink connection with the first SyncRef UE when the UE monitors for the PSBCH synchronization signals. Other embodiments may be described and/or claimed.

Abstract: Embodiments of a User Equipment (UE), Next Generation Node-B (gNB) and methods of communication are generally described herein. The UE receive training signals from a plurality of transmit-receive points (TRPs) associated with the gNB. Each training signal may comprise a reference signal resource identifier (ID) to indicate a corresponding TRP and a corresponding transmit direction of a plurality of transmit directions. The UE may, for each transmit direction of the plurality of transmit directions, determine an average signal quality measurement based on individual signal quality measurements in multiple receive directions. The UE may select, for reporting to the gNB, a subset of the average signal quality measurements to ensure that the average signal quality measurements excluded from the subset are less than or equal to a minimum value of the average signal quality measurements in the subset.

Abstract: An apparatus of a user equipment (UE), comprises one or more baseband processors to receive one or more subframes from a cell of a network, and to detect a Cell Specific Reference Signal (CRS) transmission pattern in the one or more subframes to determine whether CRS mitigation is used by the cell, wherein the one or more baseband processors are to adjust processing of the one or more subframes when CRS mitigation is used. The apparatus further includes a memory to store the one or more subframes.

Abstract: A wireless communication device is configured to perform demodulation of device-to-device (D2D) communication signals or LTE uplink signals in a User Equipment. In a transmitter, demodulation reference signal (DMRS) generation circuitry is provided for selective insertion of DMRS signals in resource elements of resource blocks of the signal for transmission using a pattern of resource elements spanning at least one of the resource blocks such that a minimum temporal spacing between consecutive symbols of the demodulation reference signal pattern is less than one slot. In a receiver the DMRS signals are used to perform channel estimation. A user equipment having the DMRS generation circuitry is provided. A computer program product is also provided. Other embodiments may be described and claimed.

Abstract: Devices and systems of sensing, resource selection and control signaling for feedback-less and feedback-based NR-V2X sidelink communication are described. Resource reservation and selection for sidelink retransmissions based on HARQ feedback are described for unicast, groupcast, and broadcast blind retransmissions. After exchanging HARQ feedback capability information for different types of communications, a HARQ-dependent or HARQ-independent resource selection occurs. Look-ahead and/or chain-based resource selection and reservation signaling is used, in which a single resource or some or all of the resources selected are signaled as reserved. Further resource selection of a single additional resource may occur after an initial resource selection. The resource selection for retransmissions may be adapted using a RSRP or distance threshold.

Abstract: Increasing a number of orthogonal time-domain transmission opportunities in a Proximity Services (ProSe) traffic generation period can reduce over-air congestion and collision in long term evolution (LTE) communications. Resource configurations can be adjusted, including providing a new physical layer numerology, reducing transmission time (TTI) interval duration, providing a smaller sidelink control information period, configuring logical sidelink control periods and/or multiplexing of control and data transmissions.

Abstract: Cellular (e.g., LTE or UMTS) and global navigation satellite system (GNSS) based technologies can provide ubiquitous and seamless synchronization solution for LTE-based vehicle to everything (V2X) or Proximity Services synchronization (ProSe) services. For example, by using joint GNSS timing references and LTE cellular network timing references for V2X or ProSe system synchronization benefits of using GNSS technologies to improve synchronization procedure for LTE based V2X or ProSe services can be enabled, including: (1) accurate and stable timing, (2) availability of a global and stable timing reference and (3) ability to propagate GNSS timing by user equipment having sufficient GNSS signal quality.

Abstract: Embodiments include apparatuses, methods, and systems that may decode system information by a UE in a wireless network to communicate with an eNB or a gNB. The apparatus may include a memory and processing circuitry coupled with the memory. The processing circuitry may identify a remaining time period of a current moment in a current time window, identify a decoding time interval for decoding system information based on a channel condition for a channel between the UE and the eNB or the gNB. Based on a first relationship between the decoding time interval and the remaining time period, the processing circuitry may store, or cause to store, in the memory one or more copies of the system information received during the decoding time interval; and may further decode, or cause to decode, the one or more copies of the system information. Other embodiments may also be described and claimed.

Abstract: An apparatus of a user equipment (UE) includes processing circuitry configured to decode a master information block (MIB) using a set of physical broadcast channel (PBCH) symbols received within a downlink frame to obtain system frame number (SFN)information. The downlink frame includes multiple copies of the PBCH symbols within at least three subframes of the downlink frame. A system information block (SIB) may be decoded based on the SFN information, to obtain uplink channel configuration information. Random access channel (RACH) procedure may be performed with a base station (BS) based on the uplink channel configuration information, to obtain an uplink resource assignment. A connection setup completion message can be encoded for transmission to the BS using the uplink resource assignment. The set of PBCH symbols can include a set of four legacy PBCH symbols.

Abstract: Implementations of this disclosure generally may relate to the field of wireless communications. More specifically, implementations described in this disclosure relate to different 3GPP LTE and LTE-A system enhancements to address the issue and support reliable V2X operation in the high mobility environments. Several solutions to improve the V2X system performance in the high mobility vehicular channel propagation conditions are described. Some aspects relate to the suggestion of a new DMRS patterns within individual subframes that promote more accurate CFO estimation. Moreover, another aspect provides DMRS mapping or puncturing patterns to transmit individual DMRS in a periodic pattern on respective OFDM/SC-FDMA symbols so that they do not occupy all REs of the OFDM/SC-FDMA symbols, respectively.

Abstract: Technology for a user equipment (UE) operable to perform adaptive time division duplexing (TDD) hybrid automatic repeat request (HARQ)-ACKnowledgement (ACK) reporting is described. The UE can implement an adaptive uplink-downlink (UL-DL) configuration received from an eNodeB. The UE can decode a downlink (DL) HARQ reference configuration received from the base station for a serving cell, wherein the DL HARQ reference configuration is for the implemented adaptive UL-DL configuration. The UE can decode a reference UL-DL configuration received from the base station via a system information block (SIB). The UE can encode HARQ-ACK feedback for transmission on an uplink channel of the serving cell in accordance with the DL HARQ reference configuration. The UE can perform uplink scheduling and the HARQ-ACK feedback based on the reference UL-DL configuration received from the base station via the SIB.

Abstract: Embodiments of a User Equipment (UE) and methods for communication are generally described herein. The UE may be configured for carrier aggregation using a primary component carrier (CC) and a secondary CC. The UE may attempt to detect a sidelink synchronization signal (SLSS) from another UE on the primary CC. The UE may, if the SLSS from the other UE is detected: determine, based on the detected SLSS, a common time synchronization for the primary CC and the secondary CC for vehicle-to-vehicle (V2V) sidelink transmissions in accordance with the carrier aggregation. The UE may, if the SLSS from the other UE is not detected: transmit an SLSS to enable determination of the common time synchronization for the primary CC and the secondary CC by the other UE. The SLSS may be transmitted on the primary CC.

Abstract: An apparatus of user equipment (UE) comprises processing circuitry and memory. The processing circuitry decodes radio resource control (RRC) signaling received from an enhanced node B (eNB), wherein the RRC signaling includes an information element (IE) including information of a multi-cast broadcast single frequency network (MBSFN) subframe pattern of neighboring cells of a serving cell of the eNB. The processing circuitry initiates detection of CRS information of neighboring cells by the UE, the CRS information including one or both of physical cell identifiers (Cell IDs) and a number of CRS antenna ports (APs) of the neighboring cells; and initiates neighboring cell CRS interference mitigation (CRS-IM) using the detected CRS information and the received information of the MBSFN subframe pattern. The memory stores the information of the MBSFN subframe pattern.

Abstract: Technologies described herein provide mechanisms for a legacy UE traveling at a high speed (e.g., in a high speed train) to estimate the opposite Doppler shifts separately for different RRHs in an SFN so that the UE can more effectively receive a payload assigned by the SFN. In addition, the present disclosure provides UE signal process mechanisms to improve HST receiver performance such that good demodulation performance can be achieved without significant impacts on UE implementation. The present disclosure provides a specific framework to improve cellular SFN system operation using a combination of an SFN data signal transmissions from different RRHs and orthogonal non-SFN reference signal transmissions from different RRHs. A UE may estimate a propagation channel for each RRH using a reference signal and use this information to improve the demodulation of the combined SFN data signal.

Abstract: An electronic device for device-to-device (D2D) communication comprises receive circuitry to receive an indication of D2D resources for D2D communication, and processing circuitry to evaluate a time and frequency selective measurement of one or more of the D2D resources, based on the indication.

Abstract: User equipment (UE) includes processing circuitry coupled to memory. To configure the UE for active bandwidth part (BWP) switching, the processing circuitry is to decode RRC signaling configuring a plurality of BWPs for the UE. The RRC signaling further includes an indicator for an initial BWP of the plurality of BWPs for initial use by the UE as an active BWP. DCI received on a PDCCH is decoded, which includes a BWP indicator for switching the active BWP from the initial BWP to another BWP of the plurality of BWPs. RF and baseband parameters to switch the active BWP from the initial BWP to the another BWP are reconfigured. Reconfiguring the RF and baseband parameters cause an interruption of one or more slots of a serving cell of the UE. A starting time of the interruption is within a time duration of a BWP switching delay supported by the UE.

Abstract: Embodiments of apparatus and methods for signaling for resource allocation and scheduling in 5G-NR integrated access and backhaul are generally described herein. In some embodiments, User Equipment configured for reporting a channel quality indicator (CQI) index in a channel state information (CSI) reference resource assumes a physical resource block (PRB) bundling size of two PRBs to derive the CQI index.

Abstract: Systems and methods provide solutions for delay and interruption requirements for vehicle-to-everything (V2X) sidelink carrier aggregation (CA). For example, when any number of component carriers is added for V2X CA, a user equipment (UE) capable of V2X sidelink communication is allowed an interruption of up to two subframes to the cellular network. The interruption may be for both uplink and downlink of a serving cell or primary cell.