Patents by Inventor Chih-Shi Yee

Chih-Shi Yee 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: 20130195029
    Abstract: A method of supporting incompatible channelization in a wireless communications system is provided. A coordinating device determines a first set of physical parameters of a first wireless channel. The first set of physical parameters includes a channel bandwidth, a central frequency, a transmit power limit, and a modulation and coding scheme. The coordinating device establishes communication with a first set of communications devices over the first wireless channel. The coordinating device then broadcasts a channel-adjustment message and determines a protection period. The channel-adjustment message comprises a set of instructions on how to adjust to a second set of physical parameters of a second wireless channel. A second set of communications devices adjust physical parameters based on the channel-adjustment message. Finally, the coordinating device communicates with the second set of communications devices over the second wireless channel during the protection period.
    Type: Application
    Filed: October 18, 2011
    Publication date: August 1, 2013
    Inventors: Chao-Chun Wang, Jianhan Liu, Chih-Shi Yee, Huanchun Ye, James June-Ming Wang
  • Patent number: 8204038
    Abstract: The invention provides a wireless communications system. In one embodiment, the wireless communications system comprises a coordinating communications device, a source communications device, and a sink communications device. The coordinating communications device transmits a predetermined bits sequence at the beginning of a radio frame at a rate of a first fixed interval. The source communications device receives frames of a streaming session, detects a duration and first starting time of a frame, and wherein forwards information about the duration and the first starting time of one or more of the frames to the coordinating communications device. The coordinating communications device then determines the duration of a second fixed interval and second starting time in accordance with a predetermined rule based on the information received from the source communications device.
    Type: Grant
    Filed: January 11, 2010
    Date of Patent: June 19, 2012
    Assignee: MediaTek Inc.
    Inventors: Chao-Chun Wang, Chih-Shi Yee
  • Patent number: 8195098
    Abstract: A communication system includes a trainee communications device and one or more trainer communications devices. The trainee communications device announces a first period of time for beamforming training, switches a receiving antenna pattern to a sector and stays in the sector for a second period of time. The trainer communications devices transmit one or more predetermined bit sequences in the first period of time. The predetermined bit sequences are transmitted in at least one sector. Each of the predetermined bit sequences carries an identifier identifying the transmitting trainer communications device.
    Type: Grant
    Filed: April 2, 2010
    Date of Patent: June 5, 2012
    Assignee: Mediatek Singapore Pte. Ltd.
    Inventors: Chao-Chun Wang, Yuh-Ren Jauh, Chih-Shi Yee
  • Patent number: 8184541
    Abstract: A method and system is provided for link layer scheduling for networked applications in a coordinator-based communications system. A network-coordinating device receives a request from a networked application to establish a communications session. The request includes a set of session parameters. The network-coordinating device allocates a first transmission opportunity in response to the request. The network-coordinating device allocates successive transmission opportunities based on the set of session parameters without receiving successive requests. The set of session parameters comprises at least one of a predetermined flow control mechanism, a quality-of-service (QoS) requirement, a bandwidth requirement, and an application type. In one embodiment, the predetermined flow control mechanism is additive increase and multiplicative decrease (AIMD) of transmission control protocol (TCP).
    Type: Grant
    Filed: January 9, 2009
    Date of Patent: May 22, 2012
    Assignee: Mediatek Inc.
    Inventors: Chao-Chun Wang, Chih-Shi Yee, Shao Wei Chen
  • Patent number: 8126145
    Abstract: The invention relates to a method for associating a client with an access point using a security protocol. The method may include initiating a handshake and exchanging operational information between the access point and the client, establishing an encrypted operational key if the operational information is validated and entering an operational phase using the operational key and an unique service set identifier if valid.
    Type: Grant
    Filed: February 21, 2006
    Date of Patent: February 28, 2012
    Assignee: Marvell International Ltd.
    Inventors: Claudius Tewari, Brian Bosso, Chor-Teck Law, Heng-Jui H. Hsu, James Chieh-Tsung Chen, James Chih-Shi Yee
  • Publication number: 20110105175
    Abstract: A communications system and method for managing transmitting power of communications devices equipped with multiple antennas. A first communications device enables a first antenna configuration in accordance with a first pre-determined rule. A second communications device activates a second antenna configuration in accordance with a second predetermined rule. First and second messages are exchanged between the first and second communications devices. The first message includes the power management profile of the first communications device and the second message includes information pertinent to a power management profile of the second communications device, and signal integrity information determined by the second communications device from the received first message.
    Type: Application
    Filed: November 4, 2010
    Publication date: May 5, 2011
    Applicant: MEDIATEK SINGAPORE PTE. LTD.
    Inventors: Chao-Chun Wang, YungPing Hsu, Chih-Shi Yee
  • Publication number: 20100254466
    Abstract: A communication system includes a trainee communications device and one or more trainer communications devices. The trainee communications device announces a first period of time for beamforming training, switches a receiving antenna pattern to a sector and stays in the sector for a second period of time. The trainer communications devices transmit one or more predetermined bit sequences in the first period of time. The predetermined bit sequences are transmitted in at least one sector. Each of the predetermined bit sequences carries an identifier identifying the transmitting trainer communications device.
    Type: Application
    Filed: April 2, 2010
    Publication date: October 7, 2010
    Applicant: MEDIATEK SINGAPORE PTE. LTD.
    Inventors: Chao-Chun Wang, Yuh-Ren Jauh, Chih-Shi Yee
  • Publication number: 20100177724
    Abstract: The invention provides a wireless communications system. In one embodiment, the wireless communications system comprises a coordinating communications device, a source communications device, and a sink communications device. The coordinating communications device transmits a predetermined bits sequence at the beginning of a radio frame at a rate of a first fixed interval. The source communications device receives frames of a streaming session, detects a duration and first starting time of a frame, and wherein forwards information about the duration and the first starting time of one or more of the frames to the coordinating communications device. The coordinating communications device then determines the duration of a second fixed interval and second starting time in accordance with a predetermined rule based on the information received from the source communications device.
    Type: Application
    Filed: January 11, 2010
    Publication date: July 15, 2010
    Applicant: MEDIATEK INC.
    Inventors: Chao-Chun Wang, Chih-Shi Yee
  • Publication number: 20090122708
    Abstract: A method and system is provided for link layer scheduling for networked applications in a coordinator-based communications system. A network-coordinating device receives a request from a networked application to establish a communications session. The request includes a set of session parameters. The network-coordinating device allocates a first transmission opportunity in response to the request. The network-coordinating device allocates successive transmission opportunities based on the set of session parameters without receiving successive requests. The set of session parameters comprises at least one of a predetermined flow control mechanism, a quality-of-service (QoS) requirement, a bandwidth requirement, and an application type. In one embodiment, the predetermined flow control mechanism is additive increase and multiplicative decrease (AIMD) of transmission control protocol (TCP).
    Type: Application
    Filed: January 9, 2009
    Publication date: May 14, 2009
    Inventors: Chao-Chun Wang, Chih-Shi Yee, Shao Wei Chen