Chia-Hao Yu has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
Abstract: A method by a user equipment (UE) includes receiving a radio resource control (RRC) configuration carrying a configuration for a first downlink (DL) channel and an uplink (UL) channel, receiving the first DL channel and a second DL channel, and canceling the UL channel when a timing condition between the first DL channel and the second DL channel is satisfied.
Abstract: A UE determines (a) resources of a PDCCH indicating a PDSCH that contains a random access message or indicating an uplink grant for transmitting a random access message and (b) resources of a second PDCCH. The UE further determines, in a time domain, (a) that the first PDCCH overlaps with the second PDCCH, (b) that the first PDCCH overlaps with a second PDSCH that contains system data or user data and indicated by the second PDCCH, (c) that the first PDSCH overlaps with the second PDCCH, or (d) that the first PDSCH overlaps with the second PDSCH. The UE then determines that monitoring the second PDCCH is an unexpected operation.
Abstract: Aspects of the disclosure provide a user equipment (UE). The UE receives configuration information of multiple transmission configuration indication (TCI) states. The UE receives one or more activation commands that associate a first subset of the TCI states with one or more codepoints of a TCI field and a second subset of the TCI states with the one or more codepoints of the TCI field. The UE receives a codepoint associated with a first TCI state in the first subset of the TCI states and a second TCI state in the second subset of the TCI states. The UE determines at least one first quasi co-located (QCL) assumption according to the first TCI state and at least one second QCL assumption according to the second TCI state. The UE receives a downlink transmission based on the at least one first QCL assumption and the at least one second QCL assumption.
September 25, 2019
Date of Patent:
June 1, 2021
Cheng-Rung Tsai, Chia-Hao Yu, Weidong Yang
Abstract: The present disclosure provides an embodiment of a reflective mask that includes a substrate; a reflective multilayer disposed on the substrate; an anti-oxidation barrier layer disposed on the reflective multilayer and the anti-oxidation barrier layer is in amorphous structure with an average interatomic distance less than an oxygen diameter; and an absorber layer disposed on the anti-oxidation barrier layer and patterned according to an integrated circuit layout.
Abstract: A method, performed by a User Equipment (UE), includes receiving, from a cell, configuration signaling configuring the UE with one or more PUCCH resources on an active UL BWP, the one or more PUCCH resources not being configured with PUCCH-SpatialRelationInfo, and the configuration signaling indicating that a default spatial relation behavior for PUSCH transmission scheduled by a DCI format 0_0 is enabled; receiving, from the cell, the DCI format 0_0 on an active DL BWP, the DCI format 0_0 providing scheduling information for a PUSCH; and transmitting the PUSCH according to the default spatial relation behavior which determines a spatial relation with reference to a QCL-TypeD RS corresponding to a QCL assumption of a pre-determined CORESET on the active DL BWP of the cell.
Abstract: An electronic device (110) includes a transceiver (130) and processing circuitry (150). The transceiver (130) can wirelessly receive a first (121) and a second signal (122 or 123) from an interface node (120) of a network work (101). The first signal (121) carries control information associated with a wireless link (105) between the electronic device (110) and the interface node (120). The processing circuitry (150) can obtain a first and a second signal quality of the first (121) and second signal (122 or 123) at a first protocol layer (PHY) in a protocol stack, respectively. At a second protocol layer (MAC), the processing circuitry (150) can determine whether the first signal (121) satisfies a beam failure criterion based on the first signal quality, and identify the second signal (122 or 123) as a candidate beam when the second signal (122 or 123) satisfies a candidate beam criterion based on the second signal quality.
Abstract: A user equipment (UE) includes one or more non-transitory computer-readable media containing computer-executable instructions embodied therein and at least one processor coupled to the one or more non-transitory computer-readable media. The at least one processor is configured to receive an indicator indicating that a Long-Term-Evolution (LTE)-Vehicle to Everything (V2X) sidelink (SL) communication is shared with New Radio (NR) SL communication on at least one of one or more carrier frequencies, and select one of the one or more carrier frequencies for the NR SL communication.
Abstract: A user equipment (UE) includes one or more non-transitory computer-readable media containing computer-executable instructions embodied therein, and at least one processor coupled to the one or more non-transitory computer-readable media. The at least one processor configured to execute the computer-executable instructions to receive downlink control information (DCI) on a downlink (DL) channel of a non-terrestrial network (NTN), the DL channel reception ending in a first slot, and transmit an uplink (UL) transmission on a UL channel of the NTN in a second slot. The second slot is separate from the first slot by a timing offset, where a duration of the timing offset is dependent on a type of the UL transmission and a numerology of the UL transmission.
Abstract: Apparatus and methods are provided to for RRM measurement in the new radio (NR) access system. In one novel aspect, multiple transmission (TX) beams are measured by a user equipment (UE) with multiple receiving (RX) beams, stores the measured TX-RX pair in a measurement matrix, and calculates a consolidation measurement for each cell based on a consolidation rule. In one embodiment, the consolidation rule indicates generating a RX consolidated vector by consolidating all RX beams with the same TX beam ID, and subsequently, generating the consolidation measurement for the cell based on the RX consolidated vector. In another embodiment, the measurement matrix is layer-3 filtered and consolidated. In yet another embodiment, the UE sends a measurement report, either contains the consolidated measurement or the measurement vector, to the NR network based on the consolidation measurement. In one embodiment, the network performs consolidation on the received measurement vector.
Abstract: A method for a user equipment (UE) monitoring a physical downlink control channel (PDCCH) for power saving signaling is disclosed. The method comprises receiving a discontinuous reception (DRX) configuration from a base station (BS) to configure the UE to monitor a scheduling signal on the PDCCH within a DRX active time, and receiving a configuration from the BS to configure the UE to monitor the power saving signaling on the PDCCH and instructing the UE to wake up for monitoring the scheduling signal in the DRX active time, wherein the configuration includes a time in milliseconds prior to a start of a DRX on-duration time, and instructs the UE to start monitoring the PDCCH for the power saving signaling.
Abstract: A method, performed by a User Equipment (UE), for Uplink (UL) transmission management includes the UE determining a default spatial domain transmission filter for an UL resource according to at least one Quasi Co-Location (QCL) parameter of a Control Resource Set (CORESET) after determining that the UL resource is not configured with a spatial domain transmission filter and a pathloss reference Reference Signal (RS) resource, and transmitting the UL resource by applying the default spatial domain transmission filter.
Abstract: A method of default Quasi-Co-Location (QCL) assumption for Physical Downlink Shared Channel (PDSCH) reception in NR network is proposed. When PDSCH is scheduled by a DCI over PDCCH after a Scheduling Offset, the spatial RX filter for the PDSCH reception can be determined according to a QCL indication conveyed by the DCI. When the Scheduling Offset for PDSCH reception scheduled by DCI is less than a time duration, then a default QCL assumption is applied. UE assumes that the DMRS ports of PDSCH of a serving cell are QCLed with the RS(s) with respect to QCL parameter(s) used for PDCCH QCL indication of a CORESET. The CORESET is associated with a UE-monitored search space in the latest slot with the lowest CORESET-IF on an active BWP on the serving cell.
August 9, 2019
Date of Patent:
February 9, 2021
Chia-Hao Yu, Cheng-Rung Tsai, Weidong Yang
Abstract: A method of transmitting secondary cell (SCell) beam failure recovery request (BFRQ) information in a beam failure recovery (BFR) procedure for a user equipment (UE) is disclosed. The method comprises receiving, from a base station (BS), at least one scheduling request (SR) resource configuration and at least one SR configuration, triggering a first SR-for-BFR procedure for requesting an uplink (UL) resource according to a first of the at least one SR configuration and corresponding to an SR-for-BFR transmission, wherein one of the at least one SR resource configuration indicates a first physical uplink control channel (PUCCH) resource for the SR-for-BFR transmission, and transmitting, to the BS, uplink control information (UCI) on a second PUCCH resource, wherein a payload of the UCI includes an indication associated with the SR-for-BFR transmission.
Abstract: A method of determining one or more PSFCH resources for HARQ feedback in sidelink communication for a first UE is disclosed. The method comprises receiving a first SCI for scheduling a first PSSCH transmission, from a second UE, receiving a second SCI for scheduling a second PSSCH transmission, from the second UE, determining priorities of a first HARQ feedback corresponding to the first PSSCH transmission and a second HARQ feedback corresponding to the second PSSCH transmission according to the first SCI and the second SCI, and transmitting a PSFCH for at least one of the first HARQ feedback and the second HARQ feedback with a higher priority according to the determined priorities, to the second UE when a first PSFCH resource for the first HARQ feedback and a second PSFCH resource for the second HARQ feedback are at least overlapped in the time domain.
Abstract: A method for Beam Failure Recovery (BFR) performed by a User Equipment (UE) includes the UE receiving, from a Base Station (BS), a first configuration indicating a first Reference Signal (RS) associated with a first cell of the BS, determining whether a first beam failure event is detected on the first cell by assessing a first radio link quality based on the first RS, triggering a first BFR procedure for the first cell when the first beam failure event is detected on the first cell, and when the first BFR procedure is triggered and not cancelled, performing operations including: determining whether the UE is allocated with an Uplink (UL) resource that is available for transmitting a BFR report, where the UL resource is a Physical Uplink Shared Channel (PUSCH) resource, when the UE is allocated with the UL resource, generating, in response to the first BFR procedure, the BFR report, and transmitting, on the UL resource, the BFR report to the BS, and when the UE is not allocated with the UL resource, triggerin
Abstract: Apparatus and methods are provided for initial access in the multi-beam operation. In one novel aspect, the UE receives multiple response messages and selects one message as the response message. In one embodiment, the UE selects a subset of a configured UL resources, transmits a first message, wherein the first message is transmitted one or more times on each of the selected set of UL resources, receives one or more first-message-response messages from the BS, and selects one response message, wherein the selected response message indicates a corresponding BS RX resource, which is used by the UE for subsequent communication with the BS. In one embodiment, the selection of UL resources is at least based on transmitting spatial characteristics of the BS, the UE or both, which indicates whether the BS/UE is reciprocal, partial reciprocal or non-reciprocal.
Abstract: Apparatus and methods are provided using interleaved frequency division multiple access (IFDMA)-based beam management reference signal for TX and RX beam sweeping. In one novel aspect, a set of IFDMA-based BM RS for TX and RX beam sweeping is configured by decomposing a defined reference numerology into N equal-length sub-time units such that the TX and RX beams can switch across sub-time unit boundary. In another novel aspect, a set of IFDMA-based beam management RS for TX and RX beams are configured by concatenating a plurality of IFDMA signals each defined over a corresponding numerology, wherein at least two IFDMA signals have different numerologies. TX and RX beam sweeping are performed based on corresponding TX and RX beam switching points. In another embodiment, the RS is a channel state information RS for a downlink measurement and a sounding reference signal for an uplink measurement.
September 11, 2018
Date of Patent:
December 22, 2020
Jiann-Ching Guey, Chia-Hao Yu, Weidong Yang
Abstract: In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided. The apparatus may be a UE. The UE determines that a random access event has occurred. The UE detects one or more down-link reference signals that are UE-specifically configured or predefined. The UE further selects a first message that is associated with a first down-link reference signal of the one or more down-link reference signals, the first down-link reference signal being quasi-colocated with a first DMRS of a serving control channel of the UE. The UE sends the first message to a base station to request a random access to the base station.
Abstract: A method of default uplink beam determination after radio resource control (RRC) connection reestablishment in a beamforming system is proposed. For uplink (UL) transmission, the BS provides dedicated physical uplink control channel (PUCCH) resource configuration to UE. The configuration includes spatial relation information that indicates the spatial domain transmission filter to be used by UE for the corresponding PUCCH transmission. After RRC connection re-establishment and before a dedicated PUCCH configuration is received, a default UE TX beam can be determined based on the UE TX beam used during the RRC connection re-establishment procedure, e.g., the UE TX beam used to transmit MSG3 in a four-step random-access channel (RACH) procedure triggered by the RRC connection re-establishment procedure.
Abstract: Methods and apparatus are provided for mobility support through beam tracking in the new radio access system. In one novel aspect, one or more beam-sets are configured for fast beam tracking. Each beam-set includes one or more multiple beams or transmit-receive points (TRPs). The UE performs the mobility support through lower layer based on one or more configured beam-sets. The lower layer can be a MAC layer or a PHY layer. In one embodiment, a channel status information (CSI) set and a transmission set are configured. The UE performs CSI measurements on all beams of the CSI set for potential beam tracking and data transmitting and receiving, and control signaling through one or more beams of the transmission set. In another embodiment, the UE further configures a candidate set. The beam-sets can be configured by the network or by the UE.