Patents by Inventor Ching-Hwa Yu

Ching-Hwa 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).

  • Patent number: 11979773
    Abstract: Provided are a method and an apparatus for multi-link data transmission and a storage medium. The method includes: transmitting real time application (RTA) data over a primary link; and transmitting the RTA data at a high priority in response to a repetition condition being triggered. The apparatus includes: a memory; and at least one processor coupled to the memory and configured to transmit RTA data over a primary link; and transmit the RTA data at a high priority in response to a repetition condition being triggered.
    Type: Grant
    Filed: March 27, 2020
    Date of Patent: May 7, 2024
    Assignee: SPREADTRUM COMMUNICATIONS (SHANGHAI) CO., LTD.
    Inventors: Yuh-Ren Jauh, Yanchao Xu, Ching-Hwa Yu, Long Wang
  • Publication number: 20220124798
    Abstract: Provided are a method for data transmission, a device for data transmission, a multi-link system, and a storage medium. The method for data transmission is applied to a first device having a plurality of links to a second device. The method includes: determining an available link from the plurality of links for data to be transmitted to the second device; and transmitting the data based on a result of transmission right contention of the plurality of links.
    Type: Application
    Filed: March 27, 2020
    Publication date: April 21, 2022
    Inventors: Yuh-Ren Jauh, Yanchao Xu, Ching-Hwa Yu, Long Wang
  • Publication number: 20220104071
    Abstract: Provided are a method and an apparatus for multi-link data transmission and a storage medium. The method includes: transmitting real time application (RTA) data over a primary link; and transmitting the RTA data at a high priority in response to a repetition condition being triggered. The apparatus includes: a memory; and at least one processor coupled to the memory and configured to transmit RTA data over a primary link; and transmit the RTA data at a high priority in response to a repetition condition being triggered.
    Type: Application
    Filed: March 27, 2020
    Publication date: March 31, 2022
    Inventors: Yuh-Ren JAUH, Yanchao XU, Ching-Hwa YU, Long WANG
  • Patent number: 11119181
    Abstract: A method of direction finding (DF) positioning based on a simplified antenna platform format in a wireless communication network is proposed. A receiver receives antenna platform format information of a transmitter having multiple antenna elements. The antenna platform format information comprises an antenna platform format indicator, antenna platform position and orientation information, a number of antenna elements, and switching delay, phase center, and polarization information for each antenna element. The receiver receives a plurality of direction finding sounding signals transmitted from the transmitter via the multiple antenna elements. The receiver performs a DF algorithm based on the plurality of DF sounding signals and the antenna platform format information and thereby estimating a DF solution. Finally, the receiver determines its own location information based on the estimated DF solution.
    Type: Grant
    Filed: June 25, 2019
    Date of Patent: September 14, 2021
    Assignee: MEDIATEK INC.
    Inventors: James June-Ming Wang, Kai-Chun Chou, Ching-Hwa Yu, Hsuan-Yu Liu
  • Patent number: 10548166
    Abstract: A method of STA-initiated uplink (UL) aggregation is proposed in a wireless communication system. Under the STA-initiated UL aggregation, an STA can gain access to the medium through contention and after winning the TXOP, it passes the TXOP ownership to its AP to allow it to trigger UL MU transmission. Thus, the AP has increased chance of utilizing the medium while maintains fairness to both legacy APs and STAs. In addition, once AP takes over ownership of the TXOP, if it detects idle secondary channels, it can enable UL aggregation over the idle secondary channels, thereby fully utilizing the entire system bandwidth.
    Type: Grant
    Filed: September 11, 2018
    Date of Patent: January 28, 2020
    Assignee: MEDIATEK INC.
    Inventors: James June-Ming Wang, Ching-Hwa Yu, Yuh-Ren Jauh, Chih-Shi Yee
  • Publication number: 20190310341
    Abstract: A method of direction finding (DF) positioning based on a simplified antenna platform format in a wireless communication network is proposed. A receiver receives antenna platform format information of a transmitter having multiple antenna elements. The antenna platform format information comprises an antenna platform format indicator, antenna platform position and orientation information, a number of antenna elements, and switching delay, phase center, and polarization information for each antenna element. The receiver receives a plurality of direction finding sounding signals transmitted from the transmitter via the multiple antenna elements. The receiver performs a DF algorithm based on the plurality of DF sounding signals and the antenna platform format information and thereby estimating a DF solution. Finally, the receiver determines its own location information based on the estimated DF solution.
    Type: Application
    Filed: June 25, 2019
    Publication date: October 10, 2019
    Inventors: James June-Ming Wang, Kai-Chun Chou, Ching-Hwa Yu, Hsuan-Yu Liu
  • Patent number: 10371783
    Abstract: A method of direction finding (DF) positioning based on a simplified antenna platform format in a wireless communication network is proposed. A receiver receives antenna platform format information of a transmitter having multiple antenna elements. The antenna platform format information comprises an antenna platform format indicator, antenna platform position and orientation information, a number of antenna elements, and switching delay, phase center, and polarization information for each antenna element. The receiver receives a plurality of direction finding sounding signals transmitted from the transmitter via the multiple antenna elements. The receiver performs a DF algorithm based on the plurality of DF sounding signals and the antenna platform format information and thereby estimating a DF solution. Finally, the receiver determines its own location information based on the estimated DF solution.
    Type: Grant
    Filed: August 18, 2015
    Date of Patent: August 6, 2019
    Assignee: MEDIATEK INC.
    Inventors: James June-Ming Wang, Kai-Chun Chou, Ching-Hwa Yu, Hsuan-Yu Liu
  • Publication number: 20190029037
    Abstract: A method of STA-initiated uplink (UL) aggregation is proposed in a wireless communication system. Under the STA-initiated UL aggregation, an STA can gain access to the medium through contention and after winning the TXOP, it passes the TXOP ownership to its AP to allow it to trigger UL MU transmission. Thus, the AP has increased chance of utilizing the medium while maintains fairness to both legacy APs and STAs. In addition, once AP takes over ownership of the TXOP, if it detects idle secondary channels, it can enable UL aggregation over the idle secondary channels, thereby fully utilizing the entire system bandwidth.
    Type: Application
    Filed: September 11, 2018
    Publication date: January 24, 2019
    Inventors: James June-Ming Wang, Ching-Hwa Yu, Yuh-Ren Jauh, Chih-Shi Yee
  • Patent number: 10104676
    Abstract: A method of performing OFDMA transmission with aggregation from multiple access categories to improve channel utilization of a wireless channel is proposed. In one novel aspect, data from multiple access categories are allowed to be aggregated and transmitted in the same packet to utilize idle time efficiently. In downlink OFDMA, AP can send different AC data to different STAs so that AP can better arrange the transmission resource block. If the resource for one STA has long enough idle time, AP can aggregate more data that is different to the current AC for the same STA to better utilize the resource. In UL OFDMA, different STAs can send different AC data to AP. If the resource for one STA has long enough idle time, the STA can aggregate more data that is different to the current AC to better utilize the resource.
    Type: Grant
    Filed: May 3, 2016
    Date of Patent: October 16, 2018
    Assignee: MEDIATEK INC.
    Inventors: Yuh-Ren Jauh, Ching-Hwa Yu, Chao-Chun Wang
  • Patent number: 10091813
    Abstract: A method of STA-initiated uplink (UL) aggregation is proposed in a wireless communication system. Under the STA-initiated UL aggregation, an STA can gain access to the medium through contention and after winning the TXOP, it passes the TXOP ownership to its AP to allow it to trigger UL MU transmission. Thus, the AP has increased chance of utilizing the medium while maintains fairness to both legacy APs and STAs. In addition, once AP takes over ownership of the TXOP, if it detects idle secondary channels, it can enable UL aggregation over the idle secondary channels, thereby fully utilizing the entire system bandwidth.
    Type: Grant
    Filed: December 1, 2015
    Date of Patent: October 2, 2018
    Assignee: MEDIATEK INC.
    Inventors: James June-Ming Wang, Ching-Hwa Yu, Yuh-Ren Jauh, Chih-Shi Yee
  • Patent number: 10051588
    Abstract: A method of mitigating inter-BSS interference via synchronized inter-BSS operation is proposed. By aligning the transmission of UL and DL transmission in two overlapping OBSSs, the inter-BSS STA-to-STA and inter-BSS AP-to-AP types of interference can be eliminated. Furthermore, based on the BSS overlapping geometry and the STA location, different interference mitigation schemes can be applied to mitigate inter-BSS AP-to-STA and inter-BSS STA-to-AP types of interference.
    Type: Grant
    Filed: November 26, 2015
    Date of Patent: August 14, 2018
    Assignee: MEDIATEK INC.
    Inventors: James June-Ming Wang, Yuh-Ren Jauh, Ching-Hwa Yu, Chih-Shi Yee, Yasantha N. Rajakarunanayake, Tianyu Wu
  • Patent number: 10004035
    Abstract: A method of managing data transmission for a receiving terminal of a first wireless system wherein the first wireless system coexists with at least one second wireless system includes receiving a transmission schedule of each of the at least one second wireless system; determining a usable time period for the first wireless system according to the transmission schedule of each of the at least one second wireless system; and sending a clear to send (CTS) to self signal or a power saving signal to indicate an interruption of the usable time period according to a length of the usable time period.
    Type: Grant
    Filed: October 13, 2014
    Date of Patent: June 19, 2018
    Assignee: MediaTek Inc.
    Inventors: Chia-Hsiang Hsu, Ching-Hwa Yu, Li-Chun Ko
  • Patent number: 9980292
    Abstract: A method of performing contention-based uplink OFDMA transmission is proposed in accordance with one novel aspect. A wireless communications station (an AP) reserves both dedicated resource and contention resource for uplink OFDMA operation for a list of communications devices (STAs). For contention-based random access, the AP does not need to collect traffic requests from the STAs. The AP only needs to make simple resource arrangement. The AP only needs to specify the allocated resource for random access and the uplink OFDMA operation duration and timing for each uplink OFDMA packet. Each STA having traffic request will contend the resource based on a random access probability scheme.
    Type: Grant
    Filed: October 28, 2015
    Date of Patent: May 22, 2018
    Assignee: MEDIATEK INC.
    Inventors: Yuh-Ren Jauh, Ching-Hwa Yu, James June-Ming Wang, Chao-Chun Wang
  • Publication number: 20180103127
    Abstract: A method of managing Universal Serial Bus (USB) data transmission and wireless communication of an electronic device is disclosed.
    Type: Application
    Filed: December 11, 2017
    Publication date: April 12, 2018
    Inventors: Cheok Yan Goh, Yu-Hsun Chen, Chih-Chieh Chou, Horng-Bin Wang, Ching-Hwa Yu
  • Patent number: 9820162
    Abstract: A method of spatial re-use with TPC and adaptive CCA is proposed. A spatial re-use station detects spatial re-use information associated with other peer OBSS stations. The spatial re-use information comprises a TX spectral density (power/Hz) and received signal or interference information of each inter-BSS peer station. The spatial re-use STA determines a TX spectral density based on the detected spatial re-use information. The spatial re-use STA then contends the medium for spatial re-use transmission opportunity (TXOP) with an intra-BSS peer station. Finally, the spatial re-use STA starts spatial re-use frame exchange with the intra-BSS peer station using the determined TX spectral density. By adjusting the TX spectral density, the spatial re-use STA adapts its CCA level to spatially reuse the medium without causing collision and interference to OBSS stations and thus increases network throughput.
    Type: Grant
    Filed: February 9, 2016
    Date of Patent: November 14, 2017
    Assignee: MEDIATEK SINGAPORE PTE LTD.
    Inventors: James June-Ming Wang, Jianhan Liu, YungPing Hsu, Ching-Hwa Yu
  • Patent number: 9813189
    Abstract: A method of fast link adaptation for Bluetooth long-range wireless networks is provided. A data packet comprises a preamble, a first packet portion including a rate indication field, and a second packet portion including a PDU. The first packet portion is encoded using a first modulation and coding scheme with a first rate while the second packet portion is encoded using a second modulation and coding scheme with a second rate indicated by the RI field. A transmitter thus can use different MCS options to support variable data rates by adapting to channel conditions, and then uses the novel RI field to indicate the data rate to a receiver dynamically. As a result, fast link adaptation can be achieved for different applications with different rate requirements, to provide higher data rate, reduce connection time, lower power consumption, and improve link quality.
    Type: Grant
    Filed: October 2, 2015
    Date of Patent: November 7, 2017
    Assignee: MEDIATEK INC.
    Inventors: Kai-Chun Chou, James June-Ming Wang, Li-Chun Ko, Ching-Hwa Yu
  • Patent number: 9801005
    Abstract: A method of period allocation for a medium to be utilized by a first wireless communication device comprising at least one wireless local area network (WLAN) module includes while the first wireless communication device occupies the medium, detecting a termination period of a Network Allocation Vector (NAV) of the medium; and the first wireless communication device extending the termination period of the NAV of the medium if the termination period of the NAV is earlier than an expected period.
    Type: Grant
    Filed: June 17, 2015
    Date of Patent: October 24, 2017
    Assignee: MEDIATEK INC.
    Inventors: Shih-Chang Su, Ching-Hwa Yu
  • Patent number: 9774645
    Abstract: A method of managing BSS network loading is proposed. An access point (AP) transmits BSS session time and data limit element in beacon or probe response frame or a response frame to a service request frame. The AP determines the session time and data limit according to the network load and AP resourced. The AP adjusts the session time and data limit dynamically. An STA decides whether to join a specific BSS based on the BSS session time and the BSS session data limit. AP encourages or discourages the STA to join the BSS by increasing or reducing the session time and data limit. The per-AP loading will be distributed according to AP's capabilities.
    Type: Grant
    Filed: June 12, 2015
    Date of Patent: September 26, 2017
    Assignee: MEDIATEK SINGAPORE
    Inventors: Chao-Chun Wang, Gabor Bajko, Chih-Shi Yee, Ching-Hwa Yu, Rongsheng Huang
  • Patent number: 9775007
    Abstract: A method of group-based location service is proposed. A wireless station initiates a ranging process with a plurality of wireless communications devices in a wireless local area network. The station belongs to a group of wireless stations. The station exchanges measurement frames with the plurality of wireless communications devices during the ranging process. The station then computes a plurality of distances to each of the plurality of wireless communications devices and thereby determining an absolute location of the station. Finally, the station informs the absolute location to a group owner of the group of wireless stations.
    Type: Grant
    Filed: October 8, 2014
    Date of Patent: September 26, 2017
    Assignee: MediaTek Singapore Pte. Ltd.
    Inventors: Chao-Chun Wang, Chih-Shi Yee, Ching-Hwa Yu, James June-Ming Wang
  • Patent number: 9699810
    Abstract: A mobile communications device supporting operation on a first wireless technology and a second wireless technology is provided. The device includes a wireless module performing wireless transceiving to and from a first station of a first wireless technology and a second station of a second wireless technology, and a controller module, transmitting a control message prior to the starting of a uplink transmission period of the first wireless technology via the wireless module to occupy the uplink transmission period of the first wireless technology so as to allow transmission of signals of the second wireless technology during the uplink transmission period of the first wireless technology. In operation, the controller module further rearranges the transmission of signals of the second wireless technology to end the transmission of signals of the second wireless technology prior to the starting of a downlink transmission period of the first wireless technology.
    Type: Grant
    Filed: August 16, 2016
    Date of Patent: July 4, 2017
    Assignee: MEDIATEK INC.
    Inventors: Li-Chun Ko, Chia-Hsiang Hsu, Ching-Hwa Yu, Ho-Chun Chiang