Patents by Inventor Xiu-Sheng Li

Xiu-Sheng Li 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: 20190215127
    Abstract: Techniques and examples of reservation of hybrid automatic repeat request (HARQ) acknowledgment (HARQ-ACK) resources in UCI in wireless communications are described. Accordingly, a UE determines how a HARQ-ACK is to be transmitted to a network node of a wireless network. The UE reserves HARQ-ACK resources among a plurality of resource elements (REs) for a two-bit HARQ-ACK based on a result of the determining. The UE then transmits the HARQ-ACK, having zero bit, one bit or two bits, to the network node in a physical uplink shared channel (PUSCH) using the reserved HARQ-ACK resources such that the PUSCH is punctured for the HARQ-ACK.
    Type: Application
    Filed: January 9, 2019
    Publication date: July 11, 2019
    Inventor: Xiu-Sheng Li
  • Patent number: 10349350
    Abstract: Various solutions for transmission resource allocation with respect to user equipment (UE) and network apparatus in mobile communications are described. A UE may receive control information from a network apparatus. The UE may turn on a radio frequency (RF) transceiver of the UE in a part of a transmission time interval (TTI) to receive downlink data in an event that the control information indicates that the downlink data is scheduled in the TTI. The downlink data is scheduled in a part of the TTI but not in any other time interval. The time duration of the TTI may comprise 14 orthogonal frequency-division multiplexing (OFDM) symbols and the part of the TTI may be configured as a mini-slot with time duration less than 14 OFDM symbols.
    Type: Grant
    Filed: September 29, 2017
    Date of Patent: July 9, 2019
    Assignee: MEDIATEK INC.
    Inventors: Xiu-Sheng Li, Wanchi Lee, Wei-Jen Chen
  • Patent number: 10306615
    Abstract: Various methods of control-less data transmission for NB-IoT/NR devices have been proposed to improve efficiency and system capacity in cellular networks. In a first embodiment, a PDCCH-less operation is performed between eNB and UE. UE will blindly decode some PDSCH subframes according to the parameters configured by higher layer. In a second embodiment, a PDCCH-lite operation is performed between eNB and UE. UE may use one PDCCH to schedule more than one subsequent PDSCH resources. In a third embodiment, an extremely compact DCI (E-DCI) format is used between eNB and UE. When the same assignment parameters are used by the eNB for the UE, DCI overhead may be reduced by E-DCI. In a fourth embodiment, direct data transmission in PDCCH is performed between eNB and UE. Data transmission is directly transmitted by PDCCH with a new DCI format.
    Type: Grant
    Filed: December 7, 2016
    Date of Patent: May 28, 2019
    Assignee: MEDIATEK INC.
    Inventors: Po-Ying Chen, Xiu-Sheng Li
  • Publication number: 20190149285
    Abstract: A method of wireless communication of a UE is provided. The UE determines K1 information bits carrying one or more CSI reports, the one or more reports including a first CSI report, K1 being an integer greater than 0. The UE selects K2 information bits from the K1 information bits, the K2 information bits excluding a part of information bits of the first CSI report, K2 being an integer greater than 0 and smaller than K1. The UE determines that the K2 information bits are in a first predetermined relationship with a threshold. The UE transmits E2 encoded bits derived from the K2 information bits in a physical up-link channel to a base station, E2 being an integer greater than 0.
    Type: Application
    Filed: November 14, 2018
    Publication date: May 16, 2019
    Inventors: Lung-Sheng TSAI, Xiu-sheng LI, Weidong YANG, Wei-De WU
  • Publication number: 20190149216
    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 up-link control information for channel state information (CSI) acquisition and up-link control information for beam management is to be transmitted on a same up-link channel. The UE includes the up-link control information for beam management in at least one CSI-acquisition report for reporting the up-link control information for CSI acquisition. The UE sends the at least one CSI-acquisition report to the base station on the up-link channel.
    Type: Application
    Filed: November 15, 2018
    Publication date: May 16, 2019
    Inventors: Lung-Sheng Tsai, Xiu-Sheng Li, Ming-Po Chang, Weidong Yang
  • Publication number: 20190141520
    Abstract: Techniques and examples of flexible signaling of capability of use equipment (UE) processing time in wireless communications are described. Accordingly, a UE establishes wireless communication with a network node of a wireless network. The UE also determines whether the UE is capable of operating in a second mode in addition to a first mode. The UE then transmits to the network node a report indicating capability of the UE to operate in the second mode and a condition with respect to a throughput associated with operating in the second mode. The UE performs a task in less time in the second mode than in the first mode.
    Type: Application
    Filed: November 5, 2018
    Publication date: May 9, 2019
    Inventors: Xiu-Sheng Li, Wenze Qu, Pei-Kai Liao
  • Patent number: 10277256
    Abstract: Aspects of the disclosure provide a method for accelerating a decoding process. The method includes receiving first bit reliability values (BRVs) of a first codeword corresponding to a first bit sequence of an information block, receiving second BRVs of a second codeword corresponding to a second bit sequence of the information block, aggregating respective first BRVs and second BRVs into an aggregated. BRV for each static code bit of the second codeword, and decoding the second codeword to recover the second bit sequence of the information block using the aggregated BRVs of each static code bit of the second codeword.
    Type: Grant
    Filed: December 28, 2016
    Date of Patent: April 30, 2019
    Assignee: MEDIATEK INC.
    Inventor: Xiu-Sheng Li
  • Publication number: 20190124647
    Abstract: A method, a computer-readable medium, and an apparatus are provided. The apparatus may be a UE. The UE determines a size of an uplink control information (UCI) payload of the UE to be transmitted to a base station. The UE selects, based on the size, a first collection from a first group of collections of physical uplink control channel (PUCCH) resource sets, each collection of the first group of collections corresponding to a respective different UCI payload size range, each PUCCH resource set including one or more resource candidates. The UE selects a first PUCCH resource set from the first collection of PUCCH resource sets. The UE selects a first resource candidate from one or more resource candidates of the first PUCCH resource set based on a first indication received from the base station. The UE transmits the UCI payload to the base station in the first resource candidate.
    Type: Application
    Filed: October 22, 2018
    Publication date: April 25, 2019
    Inventor: Xiu-Sheng Li
  • Publication number: 20190104534
    Abstract: A method, a computer-readable medium, and an apparatus are provided. The apparatus may be a UE. The UE obtains M1 modulated symbols to be transmitted on a selected section of a physical uplink shared channel (PUSCH) of the UE, the M1 modulated symbols being for carrying a first category of uplink information. The UE maps J1 modulated symbols of the M1 modulated symbols to occupy each one of J1 resource elements (REs) that are available, in a consecutive (N1?1) symbol periods of the selected section of the PUSCH, for carrying modulated symbols that carries the first category of uplink information. The UE determines a number S1 based on K1 and a number T1. The UE maps K1 modulated symbols of the M1 modulated symbols to occupy K1 REs of the T1 REs such that two adjacent REs among the K1 REs being separated by at least (S1?1) REs.
    Type: Application
    Filed: October 1, 2018
    Publication date: April 4, 2019
    Inventors: Lung-Sheng Tsai, Xiu-Sheng Li, Weidong Yang
  • Publication number: 20190052343
    Abstract: A method of beam recovery request (BRR) transmission is proposed. In a first step of beam failure detection, UE detects a beam failure condition of the original serving beam. In a second step of candidate beam identification, UE performs measurements for candidate beam selection. In a third step of BRR transmission, UE transmits a BRR message to BS upon the triggering condition for BRR is satisfied. In a fourth step of monitoring BS response, UE monitors BS response of the BRR transmission. In one advantageous aspect, the BRR transmission is over dedicated contention-free PUCCH resources, maybe with other uplink control information (UCI). Furthermore, the BRR message indicates the status of one or more configured beams, or the status of one or more identified beams, and reports corresponding beam quality indicators.
    Type: Application
    Filed: August 10, 2018
    Publication date: February 14, 2019
    Inventors: Xiu-Sheng Li, Chia-Hao Yu
  • Publication number: 20190053264
    Abstract: A User Equipment (UE) including a wireless transceiver and a controller is provided. The wireless transceiver performs wireless transmission and reception to and from a serving cell. The controller performs a first Scheduling Request (SR) procedure and a second SR procedure with the serving cell via the wireless transceiver, and maintains a first set of SR parameters for the first SR procedure and a second set of SR parameters for the second SR procedure, in response to performing the first SR procedure and the second SR procedure.
    Type: Application
    Filed: August 3, 2018
    Publication date: February 14, 2019
    Inventors: Guan-Yu LIN, Xiu-Sheng LI, Chia-Chun HSU
  • Publication number: 20190045546
    Abstract: Methods and apparatus are provided for URLLC and eMBB collision resolution. In one novel aspect, the UE initiates a collision resolution such that an URLLC uplink transmission colliding with the scheduled eMBB UL transmission can be carried out successfully. The UE modifies the scheduled eMBB UL transmission based on the collision resolution. In one embodiment, the URLLC UL transmission is for the same UE and the UE punctures the UL eMBB transmission based on predefined rules and transmitting both the UL URLLC and the UL eMBB. In another embodiment, the URLLC UL transmission colliding with the eMBB is from another UE. In one embodiment, the collision resolution command is embedded in a downlink control information (DCI) specifying a TPC offset larger than 3dB for an HARQ-ACK feedback or for a PUSCH transmission or a stop indicator to stop the UL eMBB transmission through one layer-1 (L1) signaling.
    Type: Application
    Filed: August 3, 2018
    Publication date: February 7, 2019
    Inventor: Xiu-Sheng Li
  • Publication number: 20180376511
    Abstract: A wireless communication method, base station, and user equipment (UE) for physical downlink control channel (PDCCH) in random access channel (RACH) procedure are provided. The UE may include a processor. The processor may obtains a first control resource set (CORESET) configuration for physical downlink control channels (PDCCHs) in the RACH procedure and obtaining a first search space configuration for the PDCCHs in the RACH procedure from a base station to monitor and receive the PDCCHs in the RACH procedure.
    Type: Application
    Filed: June 22, 2018
    Publication date: December 27, 2018
    Inventors: Chiou-Wei TSAI, Xiu-Sheng LI, Chien-Hwa HWANG
  • Patent number: 10104651
    Abstract: Narrowband downlink control channel (NB-PDCCH) design for Narrowband Internet of Thing (IoT) devices is proposed. In one novel aspect, NB-PDCCH spans both first and second slots in the region of legacy physical downlink shared channel (PDSCH). A plurality of physical resource blocks (PRBs) is allocated for NB-PDCCH transmission that carry downlink control information (DCI). Furthermore, each NB-IoT device can be configured with nPRB PRB pairs for NB-PDCCH transmission (e.g., nPRB=1, 2, 4, or 8), and an NB-PDCCH transmission time interval (TTI) is composed by nPRB subframes. An NB-PDCCH is encoded and occupies multiple narrowband control channel elements (NCCEs) based on aggregation level. In a preferred embodiment, each PRB pair for NB-PDCCH occupies two NCCEs.
    Type: Grant
    Filed: December 15, 2016
    Date of Patent: October 16, 2018
    Assignee: MEDIATEK INC.
    Inventors: Po-Ying Chen, Xiu-Sheng Li, Kuhn-Chang Lin
  • Publication number: 20180234156
    Abstract: A wireless communication device including a controller and a non-transitory machine-readable storage medium operatively coupled to the controller is provided. The controller executes program code stored in the non-transitory machine-readable storage medium to perform operations including: transmitting or receiving wireless signals by sweeping beams in a non-sequential order.
    Type: Application
    Filed: February 12, 2018
    Publication date: August 16, 2018
    Inventors: Chiou-Wei TSAI, Guo-Hao GAU, Cheng-Po LIANG, Xiu-Sheng LI
  • Publication number: 20180212698
    Abstract: Apparatus and methods are provided for decoding DL PHY channels in a narrow band wireless system. In one novel aspect, the UE performs a cell search and determines a first location of a resource block carrying system signals, obtains a second location of a second resource block based on the first resource block, wherein the second resource block includes a format indicator, determines a DL transmission format based on the format indicator, and receives and decodes a first DL physical channel based on the DL transmission format. In one embodiment, the UE operates in either a standalone mode, an in-band mode, or a guard-band mode. The DL transmission format comprises an offset index from a middle/central frequency of the first resource block in the in-band mode or the guard-band mode. In another embodiment, the UE further decodes a second DL physical channel carrying the format indicator.
    Type: Application
    Filed: March 23, 2018
    Publication date: July 26, 2018
    Inventors: Feifei Sun, Lei Zhang, Kuhn-Chang Lin, Jeng-Yi Tsai, Xiu-Sheng Li
  • Publication number: 20180206225
    Abstract: Apparatus and methods are provided for RE allocation for UCI on PUSCH. In one novel aspect, the UE encodes UCI for transmission on PUSCH in a NR network. The UE allocates UCI REs onto the PUSCH following one or more UCI RE allocation rules including (a) using same logical allocation patterns for both CP-OFDM waveforms and DFT-S-OFDM waveforms, (b) distributing the UCI REs across a time domain of the PUSCH, and (c) distributing the UCI REs across a frequency domain for CP-OFDM or across a virtual-time domain for DFT-S-OFDM. In one embodiment, the HARQ-ACK REs are distributed across the time domain as much as possible. In another embodiment, the allocation of the HARQ-ACK REs further involves calculating the number of HARQ REs dynamically for the HARQ ACK. The number of HARQ REs is based on a weighting parameter, which is either configured or obtained through system information.
    Type: Application
    Filed: December 15, 2017
    Publication date: July 19, 2018
    Inventors: Xiu-Sheng Li, Chia-Hua Lin, Guo-Hau Gau, Ju-Ya Chen
  • Publication number: 20180198555
    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: Application
    Filed: January 8, 2018
    Publication date: July 12, 2018
    Inventors: Wei-De Wu, Chia-Wei Tai, Tao Chen, Yen-Cheng Liu, Xiu-Sheng Li, Wei-Jen Chen
  • Publication number: 20180132229
    Abstract: Various solutions for multiplexing physical uplink control channels with respect to user equipment (UE) and network apparatus in mobile communications are described. A UE may receive control information from a network apparatus. The UE may multiplex a short physical uplink control channel (PUCCH) and a physical uplink shared channel (PUSCH) in a transmission time interval (TTI) according to the control information. The UE may transmit the multiplexed short PUCCH and PUSCH to a network apparatus. The short PUCCH and the PUSCH may be multiplexed by time division multiplexing (TDM) or frequency division multiplexing (FDM). The control information may be configured by radio resource control (RRC) layer signaling or indicated by physical layer signaling or L1 signaling.
    Type: Application
    Filed: November 1, 2017
    Publication date: May 10, 2018
    Inventor: Xiu-Sheng Li
  • Publication number: 20180092090
    Abstract: Various solutions for transmission resource allocation with respect to user equipment (UE) and network apparatus in mobile communications are described. A UE may receive control information from a network apparatus. The UE may turn on a radio frequency (RF) transceiver of the UE in a part of a transmission time interval (TTI) to receive downlink data in an event that the control information indicates that the downlink data is scheduled in the TTI. The downlink data is scheduled in a part of the TTI but not in any other time interval. The time duration of the TTI may comprise 14 orthogonal frequency-division multiplexing (OFDM) symbols and the part of the TTI may be configured as a mini-slot with time duration less than 14 OFDM symbols.
    Type: Application
    Filed: September 29, 2017
    Publication date: March 29, 2018
    Inventors: Xiu-Sheng Li, Wanchi Lee, Wei-Jen Chen