Patents by Inventor Li-Chun Ko

Li-Chun Ko 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: 11329702
    Abstract: A multi-input multi-output (MIMO) Bluetooth module with effectively suppressed mutual interference is disclosed. The MIMO Bluetooth module has multiple Bluetooth transceivers which operate in a synchronized transmission mode, in which no Bluetooth transceiver is permitted to transmit data when any of the Bluetooth transceivers are receiving data.
    Type: Grant
    Filed: May 24, 2019
    Date of Patent: May 10, 2022
    Assignee: MEDIATEK INC.
    Inventors: Chien-Fang Hsu, Li-Chun Ko
  • Patent number: 11108431
    Abstract: A wireless communication apparatus includes a channel estimation circuit, a beamforming control circuit, and a transmit (TX) circuit. The channel estimation circuit estimates a channel between the wireless communication apparatus and another wireless communication apparatus during at least one first time slot. The beamforming control circuit determines beamforming coefficients according to the estimated channel. The TX circuit applies the beamforming coefficients to transmission of an output data during at least one second time slot later than the at least one first time slot. During the at least one second time slot, the output data is transmitted to another wireless communication apparatus via multiple antennae. The wireless communication apparatus performs communications according to a normal frequency hopping sequence in compliance with a communication specification.
    Type: Grant
    Filed: January 7, 2020
    Date of Patent: August 31, 2021
    Assignee: MediaTek Inc.
    Inventors: Yu-Hsien Chang, Ching-Chia Cheng, Shuo-Jen Hsu, Ying-Che Hung, Li-Chun Ko
  • Patent number: 11057776
    Abstract: A device identifying method for identifying whether a candidate member device belongs to a device set or not by an identifying device. The device set comprising at least one member device. The method comprises: (a) establishing a connection between the identifying device and a first member device among the member device, to acquire a set ID and at least one identifying key from the first member device; (b) discovering the candidate member device according to the set ID; (c) generating identifying data according to the identifying key and transmitting the identifying data to the candidate member device; and (d) determining whether the candidate member device belongs to the device set or not according to a comparing result for the identifying data.
    Type: Grant
    Filed: January 9, 2019
    Date of Patent: July 6, 2021
    Assignee: MEDIATEK INC.
    Inventor: Li-Chun Ko
  • Publication number: 20200244304
    Abstract: A wireless communication apparatus includes a channel estimation circuit, a beamforming control circuit, and a transmit (TX) circuit. The channel estimation circuit estimates a channel between the wireless communication apparatus and another wireless communication apparatus during at least one first time slot. The beamforming control circuit determines beamforming coefficients according to the estimated channel. The TX circuit applies the beamforming coefficients to transmission of an output data during at least one second time slot later than the at least one first time slot. During the at least one second time slot, the output data is transmitted to another wireless communication apparatus via multiple antennae. The wireless communication apparatus performs communications according to a normal frequency hopping sequence in compliance with a communication specification.
    Type: Application
    Filed: January 7, 2020
    Publication date: July 30, 2020
    Inventors: Yu-Hsien Chang, Ching-Chia Cheng, Shuo-Jen Hsu, Ying-Che Hung, Li-Chun Ko
  • Patent number: 10680939
    Abstract: Systems and methods of mesh network communication enabling a relay node to autonomously select a packet propagation mechanism. Upon receiving a packet, which may carry an indication for flooding propagation as set by the edge node originating the packet, or carry no specification for any propagation mode, the relay node determines whether the packet is eligible for routing-propagation based on a number of factors, such as whether there is an existent valid route from the source node to the destination node, whether the packet is originated from a friend edge node, and whether a route discovery process has been initiated. Accordingly, the relay node may change the indication to routing propagation and forward it by routing-relaying. Thus, the packet can be propagated over the mesh network by routing propagation, despite the initial setting for flooding propagation as specified by the edge node or no setting by the edge node.
    Type: Grant
    Filed: July 5, 2017
    Date of Patent: June 9, 2020
    Assignee: MEDIATEK INC.
    Inventors: Li-Chun Ko, Rongsheng Huang
  • Publication number: 20190393932
    Abstract: A multi-input multi-output (MIMO) Bluetooth module with effectively suppressed mutual interference is disclosed. The MIMO Bluetooth module has multiple Bluetooth transceivers which operate in a synchronized transmission mode, in which no Bluetooth transceiver is permitted to transmit data when any of the Bluetooth transceivers are receiving data.
    Type: Application
    Filed: May 24, 2019
    Publication date: December 26, 2019
    Inventors: Chien-Fang HSU, Li-Chun KO
  • Patent number: 10505836
    Abstract: Methods of establishing a bidirectional route between a route originator node and a route destination node in a wireless mesh network include the route originator node broadcasting a route request message to relay nodes in the network. The route request message identifies the route destination node as the final destination for the route request message and also identifies a transmitted power level. The relay nodes determine whether the link with the route originator node is bidirectional using the transmitted power level and the received signal strength to determine the power loss over the link and then by comparing its transmission power level to that power loss. The relay node forwards the route request message when the first link is bidirectional. This process is repeated at each node that receives the route request message until the route request message reaches the route destination mode.
    Type: Grant
    Filed: March 21, 2018
    Date of Patent: December 10, 2019
    Assignee: MEDIATEK INC.
    Inventors: Li-Chun Ko, Rongsheng Huang
  • Patent number: 10492055
    Abstract: Processing of wireless advertising packets can be processed by a controller when the advertising packet includes an indication of a preference for processing the advertising packet by the controller. If the advertising packet does not include an indication of a preference for processing the advertising packet by the controller, the advertising packet can be processed by a host. In addition, if the advertising packet includes an indication of a preference for processing by the controller, but the controller cannot process the advertising packet, the advertising packet can be processed by the host.
    Type: Grant
    Filed: June 8, 2018
    Date of Patent: November 26, 2019
    Assignee: MEDIATEK, INC.
    Inventor: Li-Chun Ko
  • Publication number: 20190246300
    Abstract: A communication link checking method, applied to check a communication link of a first electronic device, which comprises: (a) receiving a report message, wherein the report message comprises received strength information indicating a received signal strength of a request message received by a second electronic device and comprises wanted strength information provided by the second electronic device; and (b) determining a quality of the communication link according to the received strength information and the wanted strength information.
    Type: Application
    Filed: January 29, 2019
    Publication date: August 8, 2019
    Inventor: Li-Chun Ko
  • Publication number: 20190215687
    Abstract: A device identifying method for identifying whether a candidate member device belongs to a device set or not by an identifying device. The device set comprising at least one member device. The method comprises: (a) establishing a connection between the identifying device and a first member device among the member device, to acquire a set ID and at least one identifying key from the first member device; (b) discovering the candidate member device according to the set ID; (c) generating identifying data according to the identifying key and transmitting the identifying data to the candidate member device; and (d) determining whether the candidate member device belongs to the device set or not according to a comparing result for the identifying data.
    Type: Application
    Filed: January 9, 2019
    Publication date: July 11, 2019
    Inventor: Li-Chun Ko
  • Patent number: 10158562
    Abstract: A wireless communication device, serving as a destination node of one or more data packets propagated in a wireless mesh network, is provided. The wireless communication device includes a wireless transceiver and a controller. The wireless transceiver performs wireless transmission and reception in the wireless mesh network. The controller selects a first relay node to serve as a friend node for the wireless communication device and to store the data packets which arrive when the wireless communication device operates in a sleep mode, and broadcast, via the wireless transceiver, a notification message in the wireless mesh network when selecting a second relay node to serve as the friend node for the wireless communication device.
    Type: Grant
    Filed: November 11, 2016
    Date of Patent: December 18, 2018
    Assignee: MEDIATEK INC.
    Inventors: Li-Chun Ko, Rongsheng Huang
  • Publication number: 20180359627
    Abstract: Processing of wireless advertising packets can be processed by a controller when the advertising packet includes an indication of a preference for processing the advertising packet by the controller. If the advertising packet does not include an indication of a preference for processing the advertising packet by the controller, the advertising packet can be processed by a host. In addition, if the advertising packet includes an indication of a preference for processing by the controller, but the controller cannot process the advertising packet, the advertising packet can be processed by the host.
    Type: Application
    Filed: June 8, 2018
    Publication date: December 13, 2018
    Inventor: Li-Chun KO
  • Publication number: 20180309659
    Abstract: Methods of establishing a bidirectional route between a route originator node and a route destination node in a wireless mesh network include the route originator node broadcasting a route request message to relay nodes in the network. The route request message identifies the route destination node as the final destination for the route request message and also identifies a transmitted power level. The relay nodes determine whether the link with the route originator node is bidirectional using the transmitted power level and the received signal strength to determine the power loss over the link and then by comparing its transmission power level to that power loss. The relay node forwards the route request message when the first link is bidirectional. This process is repeated at each node that receives the route request message until the route request message reaches the route destination mode.
    Type: Application
    Filed: March 21, 2018
    Publication date: October 25, 2018
    Inventors: LI-CHUN KO, RONGSHENG HUANG
  • Patent number: 10091793
    Abstract: A UE controls in-device coexistence (IDC) indication message generation to mitigate potential throughput impact on UE to maintain UE performance as much as possible. Under the proposed method, FDM-based solution is always preferred by the UE. Based on the IDC indication message generated by the UE, a network applies an IDC interference mitigation solution that prioritizes FDM-based solution. Specifically, the UE first sends an IDC message requesting FDM-based solution. In case the serving eNB does not respond, the UE sends a new IDC message by alternating IDC option. Even if a TDM-based solution has been received, the UE may continue requesting FDM-based solution to gain UE performance.
    Type: Grant
    Filed: February 5, 2016
    Date of Patent: October 2, 2018
    Assignee: MEDIATEK INC.
    Inventors: Li-Chun Ko, Yih-Shen Chen, Yu-Ting Chen, Chung-Wei Wang, Yi-Chien Wang
  • 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: 9967897
    Abstract: The invention provides a mobile communication device having a first wireless communication module with a strong driving circuit, and a second wireless communication module with a weak driving circuit. The first wireless communication module is coupled to the second wireless communication module via only one wire. The first wireless communication module sends a first traffic pattern of a first wireless transceiving to the second wireless communication module via the wire, and receives a second traffic of a second wireless transceiving from the second wireless communication module via the wire. The second traffic pattern indicates whether the second wireless communication module decides to use a remaining period of time, in which the first wireless communication module is not required to perform wireless transceiving, for the second wireless transceiving.
    Type: Grant
    Filed: April 17, 2014
    Date of Patent: May 8, 2018
    Assignee: MEDIATEK INC.
    Inventors: Li-Chun Ko, Hong-Kai Hsu, I-Lin Hsieh, Jwo-An Lin, I-Kang Fu, Huanchun Ye
  • Publication number: 20180070284
    Abstract: A wireless communication device, serving as an edge node in a wireless mesh network, is provided. The wireless communication device includes a wireless transceiver and a controller. The wireless transceiver performs wireless transmission and reception in the wireless mesh network. The controller uses a routing-based propagation mechanism to transmit, via the wireless transceiver, a data packet to a destination node in the wireless mesh network when a route is known towards the destination node, and uses a flooding-based propagation mechanism to transmit, via the wireless transceiver, the data packet to the destination node when receiving a routing control message invalidating the route.
    Type: Application
    Filed: July 7, 2017
    Publication date: March 8, 2018
    Inventor: Li-Chun KO
  • Patent number: 9894708
    Abstract: For LTE cellular data and Wi-Fi P2P technology coexistence scenario, a user equipment can generate in-device coexistence (IDC) indication message to the base station for DRX-based IDC solution. LTE data scheduling is described by a set of DRX parameters, while Wi-Fi P2P data scheduling is described by Opportunistic Power Saving (OppoPS) and Notification of Absence (NoA) parameters. When generating the IDC indication message for Wi-Fi P2P group client (GC), the DRX parameters must be selected carefully to maximize efficiency. Even though Wi-Fi shares less time, with proper time alignment, its coexistence performance could be better. For Wi-Fi P2P group owner (GO) with IDC TDM scheduling constraints, OppoPS and NoA should be aligned with DRX parameters to achieve best performance.
    Type: Grant
    Filed: April 20, 2016
    Date of Patent: February 13, 2018
    Assignee: MEDIATEK INC.
    Inventors: Li-Chun Ko, Chia-Hsiang Hsu, Ho-Chun Chiang, Kun-Hsing Chou, Shu-Hsun Wu, Kai-Hsiang Hsieh
  • Publication number: 20180013665
    Abstract: Systems and methods of mesh network communication enabling a relay node to autonomously select a packet propagation mechanism. Upon receiving a packet, which may carry an indication for flooding propagation as set by the edge node originating the packet, or carry no specification for any propagation mode, the relay node determines whether the packet is eligible for routing-propagation based on a number of factors, such as whether there is an existent valid route from the source node to the destination node, whether the packet is originated from a friend edge node, and whether a route discovery process has been initiated. Accordingly, the relay node may change the indication to routing propagation and forward it by routing-relaying. Thus, the packet can be propagated over the mesh network by routing propagation, despite the initial setting for flooding propagation as specified by the edge node or no setting by the edge node.
    Type: Application
    Filed: July 5, 2017
    Publication date: January 11, 2018
    Inventors: Li-Chun Ko, Rongsheng Huang
  • 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