Patents by Inventor Wei-De Wu

Wei-De Wu 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).

  • Publication number: 20200267690
    Abstract: In one aspect, a User Equipment (UE) performs Radio Resource Management (RRM) measurements on downlink signals with a first cycle period equal to the UE's Discontinuous Reception (DRX) cycle period. The RRM measurements cycle period is lengthened when UE detects that a signal quality measurement of the primary cell is greater than the sum of a positive offset and a signal quality measurement of a neighboring cell having the best signal quality among all of UE's neighboring cells. In another aspect, a UE de-multiplexes a paging indication which precedes a Synchronization Signal Block (SSB) in time and is generated using the same sequence generation formula as that for generating a Secondary Synchronization Signal (SSS) in the SSB. From the de-multiplexed paging indication, the UE detects that it is paged for message reception and wakes up to receive the message in a next data reception period of the UE's DRX cycle.
    Type: Application
    Filed: February 11, 2020
    Publication date: August 20, 2020
    Inventors: Chi-Hsuan Hsieh, Wei-De Wu, Yung-Hsiang Liu
  • Publication number: 20200267643
    Abstract: Various solutions with respect to cross-slot scheduling for power saving in mobile communications are described. An apparatus receives, from a wireless network, a control signaling. According to the control signaling, the apparatus changes an aspect of a power profile of at least one bandwidth part (BWP) of a plurality of BWPs without causing data interruption regarding data transmission or reception by the apparatus. The apparatus also receives, from the wireless network, an indication. According to the indication, the apparatus adapts a new minimum applicable value of at least one of a downlink scheduling offset (K0), an uplink scheduling offset (K2), and an aperiodic channel state information reference signal (CSI-RS) triggering offset for an active DL BWP or an active UL BWP of the plurality of BWPs.
    Type: Application
    Filed: February 13, 2020
    Publication date: August 20, 2020
    Inventors: Wei-De Wu, Cheng-Hsun Li
  • Publication number: 20200267645
    Abstract: Various solutions for power saving for New Radio (NR) carrier aggregation in mobile communications are described. An apparatus receives, from a wireless network, a trigger signal. The apparatus switches between a first bandwidth part (BWP) and a second BWP of at least two BWPs for a secondary cell (SCell) in response to receiving the trigger signal. No physical downlink control channel (PDCCH) monitoring is configured for the first BWP while PDCCH monitoring is configured for the second BWP.
    Type: Application
    Filed: February 13, 2020
    Publication date: August 20, 2020
    Inventors: Wei-De Wu, Yi-Ju Liao, Chi-Hsuan Hsieh
  • Patent number: 10742379
    Abstract: A method of uplink control information (UCI) transmission over physical uplink control channel (PUCCH) is proposed. The UCI may include different information and being transmitted using different PUCCH formats. Under certain scenarios, the coded UCI bitstream size may not be assigned to an integer number of modulated symbols. To eliminate unnecessary processing as well as to utilize every bit in a modulated resource element, it is proposed to adjust the UCI codeword size to be a multiple of PUCCH modulation order.
    Type: Grant
    Filed: January 9, 2019
    Date of Patent: August 11, 2020
    Assignee: MEDIATEK INC.
    Inventors: Wei-De Wu, Hung-Chi Kuo, Xiu-Sheng Li, Yuan-Hwui Chung
  • Patent number: 10666397
    Abstract: Aspects of the disclosure provide an apparatus that includes a receiving circuit and a baseband processing circuit. The receiving circuit is configured to receive signals transmitted from another apparatus to the apparatus and generate digital samples in response to the received signals. The received signals have a plurality of frequency sub-bands allocated as transmission resources. A specific frequency sub-band is allocated to the apparatus to carry data and control information to the apparatus. The baseband processing circuit is configured to receive the digital samples, process the digital samples to generate symbols in the respective frequency sub-bands, and decode the symbols in the respective frequency sub-bands to determine the specific frequency sub-band that is allocated to the apparatus.
    Type: Grant
    Filed: March 31, 2017
    Date of Patent: May 26, 2020
    Assignee: MEDIATEK INC.
    Inventors: Wei-De Wu, Pei-Kai Liao, Chien-Hwa Hwang
  • Publication number: 20200146095
    Abstract: A UE in a wireless network performs RRM measurements according to power saving schemes. The UE receives Synchronization Signal Blocks (SSBs), which are broadcast periodically from a base station to a cell served by the base station, and receives additional signal blocks transmitted periodically from the base station. The additional signal blocks and the SSBs use different time-and-frequency resources. The UE performs an RRM measurement according to information received within an RRM measurement window including at least one of the additional signal blocks and a corresponding one of the SSBs. Additionally or alternatively, the UE performs RRM measurements on SSBs with a first cycle period equal to a Discontinuous Reception (DRX) cycle period. In response to an indication that a predefined condition for the RRM measurements is satisfied, the UE performs the RRM measurements with a second cycle period which is at least two times of the first cycle period.
    Type: Application
    Filed: October 31, 2019
    Publication date: May 7, 2020
    Inventors: Chi-Hsuan Hsieh, Wei-De Wu, Din-Hwa Huang, Kuan-Lin Chen
  • Publication number: 20200128427
    Abstract: A method of UE power profile adaptation to traffic and UE power consumption characteristics based on power profile is proposed. In one preferred embodiment, hybrid of bandwidth part (BWP) and power profile is proposed. UE is configured with multiple BWPs and each BWP includes a set of power profiles. Two types of adaptation triggering can be used, a first type of trigger is based on power saving signals sent from the network, and the second type of trigger is based on timers. When the traffic characteristic for UE changes, the network can send a power saving signal to UE to trigger power profile adaptation, e.g., BWP+power profile switching. When traffic has been digested and becomes sporadic, then power profile adaptation can be triggered based on timers, e.g., a timer for BWP adaptation and another timer for power profile adaptation.
    Type: Application
    Filed: October 16, 2019
    Publication date: April 23, 2020
    Inventors: Chien-Hwa Hwang, Wei-De Wu, Yiju Liao, Cheng-Hsun Li, Chi-Hsuan Hsieh
  • Publication number: 20200107308
    Abstract: A method of supporting active bandwidth part (BWP) switching under carrier aggregation (CA) is proposed. To avoid longer switching delay and multiple interruptions in other component carriers (CCs)/cells, the starting time of the later active BWP switching in one cell should fall outside the switching delay of the earlier active BWP switching in another cell. If the later active BWP switching is DCI-based, then the network should schedule the later active BWP switching outside the switching delay of the earlier active BWP switching. If the later active BWP switching is timer-based, then the UE should not perform the later active BWP switching until the earlier active BWP switching is completed.
    Type: Application
    Filed: September 23, 2019
    Publication date: April 2, 2020
    Inventors: Pei-Kai Liao, Wei-De Wu, Jia-Hong Syu
  • Publication number: 20200107266
    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 attempts to detect a trigger event. The UE determines values of a first set of power configuration parameters when the trigger event is detected, wherein a change in a value of each power configuration parameter in the first set of power configuration parameters affects power consumption of the first UE. The UE transmits or receives signals in accordance with the values of the first set of power configuration parameters.
    Type: Application
    Filed: September 26, 2019
    Publication date: April 2, 2020
    Inventors: YIJU LIAO, Wei-De Wu, Chien Hwa Hwang, Cheng-Hsun Li, Chi-Hsuan Hsieh, Xiu-Sheng Li
  • Publication number: 20200107265
    Abstract: A method of UE adaptation to traffic and UE power consumption characteristics based on power profile is proposed. A power profile comprises a set of restrictions on range of values of a subset of RRC parameters that are power consumption relevant. Each power profile targets for a particular traffic characteristic. Further, UE parameter adaptation can be triggered with the help of UE assistance information, e.g., the index of the power profile best fits the operation condition. In one preferred embodiment, hybrid of bandwidth part (BWP) and power profile is proposed. UE is configured with multiple BWPs and each BWP includes a set of power profiles. Within a BWP, only one of the power profiles is active at a time; the parameter configuration of each power profile corresponds to a specific traffic characteristic.
    Type: Application
    Filed: September 24, 2019
    Publication date: April 2, 2020
    Inventors: Chien-Hwa Hwang, Cheng-Hsun Li, Yiju Liao, Xiu-Sheng Li, Wei-De Wu, Chi-Hsuan Hsieh
  • Publication number: 20200037246
    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 receives, from a base station, a configuration specifying one or more power profiles of the UE. Each of the power profile includes a predetermined value of at least one operational parameter that, while adopted by the UE when the configuration is applied, affects a power consumption of the UE. The UE operates in accordance with a first power profile of the one or more power profiles. The UE determines that a trigger event has occurred. The UE switches to operate in accordance with a second power profile of the one or more power profiles.
    Type: Application
    Filed: July 24, 2019
    Publication date: January 30, 2020
    Inventors: Chien Hwa Hwang, Xiu-Sheng Li, Yiju Liao, Wei-De Wu
  • Publication number: 20200037247
    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 attempts to detect a wake-up signal transmitted from a base station and directed to the UE prior to an ON duration in a discontinuous reception (DRX) cycle in Radio Resource Control (RRC) connected mode. The UE refrains from monitoring a down link control channel during the ON duration when the wake-up signal does not trigger the UE to monitor a down link control channel in the ON duration.
    Type: Application
    Filed: July 24, 2019
    Publication date: January 30, 2020
    Inventors: Yiju Liao, Xiu-Sheng Li, Wei-De Wu, Chien Hwa Hwang
  • Publication number: 20200014405
    Abstract: Apparatus and methods are provided for polar code sub-block interleaving and bit selection. In one novel aspect, middle-part interlaced sub-block interleaving is provided for polar code interleaving. In one embodiment, the middle part of the polar code is interlaced and generates the interleaved polar code. In another embodiment, the lower part and the upper part are also sub-block interleaved with the middle-part interlaced method. In another novel, rate-dependent unified bit selection is provided. The bit selection is categorized into three operation categories of repetition, puncturing and the shortening. Each category follows unified bit selection rule with different categories differ only in the access scheme. In one embodiment, the circular buffer is used for bit selection.
    Type: Application
    Filed: August 26, 2019
    Publication date: January 9, 2020
    Inventors: Wei-De Wu, Chia-Wei Tai
  • Publication number: 20200008181
    Abstract: A method to improve the design of new radio physical downlink control channel (NR-PDCCH) transmission and to reduce the false alarm rate of NR-PDCCH blind decoding is proposed. The downlink control information (DCI) bits are carried by NR-PDCCH to be transmitted to UEs after CRC attachment, channel encoding, interleaving, and modulation. The proposed NR-PDCCH design is separated into two parts. In a first part, a UE-ID or RNTI is used to derive a CRC mask or a scrambling sequence for CRC attachment of the DCI bits. In a second part, a UE-specific ID is used to derive an interleaver before or after channel encoding of the DCI bits. If the interleaver is placed before channel encoding, it takes the form of a bit interleaver. If the interleaver is placed after channel encoding, it takes the form of a bit interleaver or a channel interleaver.
    Type: Application
    Filed: September 3, 2019
    Publication date: January 2, 2020
    Inventors: Chien-Hwa Hwang, Weidong Yang, Pei-Kai Liao, Wei-De Wu
  • Patent number: 10498481
    Abstract: A method of new radio physical broadcast channel (NR-PBCH) bit mapping is proposed to improve for NR-PBCH decoding performance under Polar codes. NR-PBCH carries 32 information bits and 24 CRC bits. Specifically, NR-PBCH uses 512-bit Polar codes to carry total 56 data bits. Different Polar code bit channels have different channel reliability. As a general rule, the most reliable Polar code bit channels are used for the 56 data bits. In accordance with a novel aspect, within the 32 NR-PBCH information bits, some of the information bits that can be known to the decoders under certain conditions and therefore are placed at the least reliable Polar code bit positions. As a result, by mapping the NR-PBCH data bits properly at the input bit positions of Polar codes, the NR-PBCH decoding performance is improved when the known bits a priori can be exploited.
    Type: Grant
    Filed: January 8, 2018
    Date of Patent: December 3, 2019
    Assignee: MEDIATEK INC.
    Inventors: Wei-De Wu, Chia-Wei Tai, Tao Chen, Yen-Cheng Liu, Xiu-Sheng Li, Wei-Jen Chen
  • Publication number: 20190313332
    Abstract: Apparatus and methods are provided for narrow band power saving framework. In one novel aspect, the UE configured with multiple BWPs is configured with a plurality of UE states each associated with one or more configured BWP, and transitions to or from a power-saving state upon detecting one or more transitioning conditions. In one embodiment, the UE transitions to and from the power-saving state upon detecting a switching signal. In another novel aspect, the UE with multiple BWPs is further configured with a leader BWP set for a leader cell, and one or more sets of follower BWP sets for corresponding follower cells of the UE, bundles each leader cell UE state with corresponding follower UE state for each follower cell, and transitions from a corresponding follower cell power saving state automatically for the one or more follower cells upon the leader cell UE state transition.
    Type: Application
    Filed: April 3, 2019
    Publication date: October 10, 2019
    Inventors: Wei-De Wu, Xiu-Sheng Li, Pei-Kai Liao, Chien-Hwa Hwang
  • Patent number: 10440703
    Abstract: A method to improve the design of new radio physical downlink control channel (NR-PDCCH) transmission and to reduce the false alarm rate of NR-PDCCH blind decoding is proposed. The downlink control information (DCI) bits are carried by NR-PDCCH to be transmitted to UEs after CRC attachment, channel encoding, interleaving, and modulation. The proposed NR-PDCCH design is separated into two parts. In a first part, a UE-ID or RNTI is used to derive a CRC mask or a scrambling sequence for CRC attachment of the DCI bits. In a second part, a UE-specific ID is used to derive an interleaver before or after channel encoding of the DCI bits. If the interleaver is placed before channel encoding, it takes the form of a bit interleaver. If the interleaver is placed after channel encoding, it takes the form of a bit interleaver or a channel interleaver.
    Type: Grant
    Filed: January 8, 2018
    Date of Patent: October 8, 2019
    Assignee: MediaTek INC.
    Inventors: Chien-Hwa Hwang, Weidong Yang, Pei-Kai Liao, Wei-De Wu
  • Patent number: 10432234
    Abstract: Aspects of the disclosure provide polar code rate matching methods. A first method can include determining whether to puncture or shorten a mother polar code according to a mother code rate and/or a rate matched code rate, and selecting K positions in the sequence of N input bits for input of K information bits to a polar encoder according to an offline prepared index list ordered according to the reliabilities of respective synthesized channels. Frozen input bits caused by puncturing or shortening are skipped during the selection. A second method includes generating a mother polar code, rearranging code bits of the mother polar code to form a rearranged sequence that can be stored in a circular buffer, and performing, in a unified way, one of puncturing, shortening, or repetition on the rearranged sequence to obtain a rate matched code.
    Type: Grant
    Filed: July 18, 2017
    Date of Patent: October 1, 2019
    Assignee: MEDIATEK INC.
    Inventors: Wei-De Wu, Chia-Wei Tai, Mao-Ching Chiu
  • Patent number: 10425111
    Abstract: Apparatus and methods are provided for polar code sub-block interleaving and bit selection. In one novel aspect, middle-part interlaced sub-block interleaving is provided for polar code interleaving. In one embodiment, the middle part of the polar code is interlaced and generates the interleaved polar code. In another embodiment, the lower part and the upper part are also sub-block interleaved with the middle-part interlaced method. In another novel, rate-dependent unified bit selection is provided. The bit selection is categorized into three operation categories of repetition, puncturing and the shortening. Each category follows unified bit selection rule with different categories differ only in the access scheme. In one embodiment, the circular buffer is used for bit selection.
    Type: Grant
    Filed: February 6, 2018
    Date of Patent: September 24, 2019
    Assignee: MEDIATEK INC.
    Inventors: Wei-De Wu, Chia-Wei Tai
  • Patent number: 10425186
    Abstract: Concepts and examples pertaining to combined coding design for efficient codeblock extension are described. A processor of a communication apparatus may combine channel polarization of a communication channel with a first coding scheme for first codeblocks of a smaller size to generate a second coding scheme. The processor may also code second codeblocks of a larger size using the second coding scheme.
    Type: Grant
    Filed: September 11, 2017
    Date of Patent: September 24, 2019
    Assignee: MEDIATEK INC.
    Inventors: Wei-De Wu, Mao-Ching Chiu