Patents by Inventor Li-Chi Huang

Li-Chi Huang 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: 8200283
    Abstract: A communication apparatus has at least one radio transceiver module, a first subscriber identity card with a first address and a second subscriber identity card with a second address. The first subscriber identity card camps on a first cell belonging to a first wireless network via the radio transceiver module, and the second subscriber identity card camps on a second cell belonging to a second wireless network via the radio transceiver module. The communication apparatus includes first processor logic coupled to the radio transceiver module, the first subscriber identity card and the second subscriber identity card, receiving a communication request requesting for establishing wireless communication between the first subscriber identity card and a peer communication entity.
    Type: Grant
    Filed: October 13, 2011
    Date of Patent: June 12, 2012
    Assignee: Mediatek Inc.
    Inventors: Li-Chi Huang, Shun-Wen Hsiao, Ding-Chiang Tang
  • Publication number: 20120115452
    Abstract: A communication apparatus has at least one radio transceiver module, a first subscriber identity card with a first address and a second subscriber identity card with a second address. The first subscriber identity card camps on a first cell belonging to a first wireless network via the radio transceiver module, and the second subscriber identity card camps on a second cell belonging to a second wireless network via the radio transceiver module. The communication apparatus includes first processor logic coupled to the radio transceiver module, the first subscriber identity card and the second subscriber identity card, receiving a communication request requesting for establishing wireless communication between the first subscriber identity card and a peer communication entity.
    Type: Application
    Filed: October 13, 2011
    Publication date: May 10, 2012
    Applicant: MEDIATEK INC.
    Inventors: Li-Chi Huang, Shun-Wen Hsiao, Ding-Chiang Tang
  • Publication number: 20120115486
    Abstract: A communication apparatus has at least one radio transceiver module, a first subscriber identity card and a second subscriber identity card, where the first subscriber identity card corresponds to a first public land mobile network (PLMN), and the second subscriber identity card corresponds to a second PLMN. The communication apparatus includes processor logic determining whether the first PLMN and the second PLMN are the same, and for suspending a measurement procedure and a cell reselection procedure of one of the first subscriber identity card and the second subscriber identity card to reduce battery power consumption. Processor logic further triggers an unsuspended measurement procedure to tune the radio transceiver module to a plurality of corresponding channel frequency/frequencies of the neighbor cells.
    Type: Application
    Filed: January 17, 2012
    Publication date: May 10, 2012
    Applicant: MEDIATEK INC.
    Inventors: Li-Chi HUANG, Ming-Wan HSU
  • Patent number: 8125943
    Abstract: The invention provides a method for positioning a user equipment. First, a plurality of wireless links between the user equipment and a plurality of mobile networks are established. A plurality of first location information sets describing a location of the user equipment are then obtained from the mobile networks through the wireless links. The first location information sets are then converted to a plurality of second location information sets with a predetermined format. The second location information sets are then combined to estimate a third location information set describing the location of the user equipment.
    Type: Grant
    Filed: February 19, 2009
    Date of Patent: February 28, 2012
    Assignee: Mediatek Inc.
    Inventors: Chia-lan Chang, Chia-Chen Hsu, Li-Chi Huang
  • Patent number: 8121601
    Abstract: A communication apparatus is provided. The communication apparatus includes a processor, a first and a second subscriber identity card and at least one radio transceiver module. The processor is coupled to the first subscriber identity card, the second subscriber identity card and the radio transceiver module, merges a first neighbor cell list and a second neighbor cell list to obtain a merged neighbor cell list, tunes the radio transceiver module to the corresponding channel frequency/frequencies of the neighbor cells in the merged neighbor cell list to respectively receive signals from the neighbor cells therein, and accordingly measures and evaluates quality of the neighbor cells therein.
    Type: Grant
    Filed: April 1, 2009
    Date of Patent: February 21, 2012
    Assignee: Mediatek Inc.
    Inventors: Li-Chi Huang, Ming-Wan Hsu
  • Patent number: 8064957
    Abstract: A communication apparatus is provided. A first subscriber identity card is with a first address and camps on a first cell. A second subscriber identity card is with a second address and camps on a second cell. After receiving a communication request requesting for establishing wireless communication between the first subscriber identity card and a peer communication entity, a processor activates a service instructing the second wireless network to transfer a future apparatus terminated communication request of the second subscriber identity card to the first subscriber identity card via the first cell.
    Type: Grant
    Filed: April 1, 2009
    Date of Patent: November 22, 2011
    Assignee: MediaTek Inc.
    Inventors: Li-Chi Huang, Shun-Wen Hsiao, Ding-Chiang Tang
  • Publication number: 20110032868
    Abstract: A method for handling data transmission by a mobile station with a first RF module and second RF module is provided. The mobile station is coupled to a computer acquiring an IP address IP(U). A packet with a source IP address IP(U) and a destination IP address IP(Y) corresponding to an access network is received by the mobile station. The first RF module is assigned to transmit the received packet by replacing the source IP address IP(U) with a source IP address IP(A). Another packet with the source IP address IP(U) and destination IP address IP(Y) is assigned to the second RF module, and the source IP address IP(U) is replaced by a source IP address IP(B). The replaced packets are transmitted to the access network via the first and second RF module respectively.
    Type: Application
    Filed: August 4, 2009
    Publication date: February 10, 2011
    Applicant: MEDIATEK INC.
    Inventors: Li-Chi Huang, Chen-Hsuan Lee
  • Publication number: 20100304782
    Abstract: The invention discloses a method for coordinating protocol stack entities to share a single radio resource, executed by a processor of a mobile station, including the step of: after a first protocol stack entity for a first subscriber identity card enters a TALKING mode or enables a dial-up service, forcing a second protocol stack entity for a second subscriber identity card to release the radio resource or suspend utilization of the radio resource, and enabling the radio resource to be utilized to perform requisite operations or procedures of the TALKING mode or the dial-up service.
    Type: Application
    Filed: May 28, 2009
    Publication date: December 2, 2010
    Applicant: MEDIATEK INC.
    Inventors: Chia-Lan Chang, Chen-Hsuan Lee, Chih-Hao Chen, Yu-Tsun Nien, Li-Chi Huang, Keng-Ming Huang
  • Publication number: 20100255843
    Abstract: A communication apparatus is provided. The communication apparatus includes a processor, a first and a second subscriber identity card and at least one radio transceiver module. The processor is coupled to the first subscriber identity card, the second subscriber identity card and the radio transceiver module, merges a first neighbor cell list and a second neighbor cell list to obtain a merged neighbor cell list, tunes the radio transceiver module to the corresponding channel frequency/frequencies of the neighbor cells in the merged neighbor cell list to respectively receive signals from the neighbor cells therein, and accordingly measures and evaluates quality of the neighbor cells therein.
    Type: Application
    Filed: April 1, 2009
    Publication date: October 7, 2010
    Applicant: MEDIATEK INC.
    Inventors: Li-Chi Huang, Ming-Wan Hsu
  • Publication number: 20100255880
    Abstract: A communication apparatus is provided. A first subscriber identity card is with a first address and camps on a first cell. A second subscriber identity card is with a second address and camps on a second cell. After receiving a communication request requesting for establishing wireless communication between the first subscriber identity card and a peer communication entity, a processor activates a service instructing the second wireless network to transfer a future apparatus terminated communication request of the second subscriber identity card to the first subscriber identity card via the first cell.
    Type: Application
    Filed: April 1, 2009
    Publication date: October 7, 2010
    Applicant: MEDIATEK INC.
    Inventors: Li-Chi Huang, Shun-Wen Hsiao, Ding-Chiang Tang
  • Publication number: 20100208649
    Abstract: The invention provides a method for positioning a user equipment. First, a plurality of wireless links between the user equipment and a plurality of mobile networks are established. A plurality of first location information sets describing a location of the user equipment are then obtained from the mobile networks through the wireless links. The first location information sets are then converted to a plurality of second location information sets with a predetermined format. The second location information sets are then combined to estimate a third location information set describing the location of the user equipment.
    Type: Application
    Filed: February 19, 2009
    Publication date: August 19, 2010
    Applicant: MEDIATEK INC.
    Inventors: Chia-Lan Chang, Chia-Chen Hsu, Li-Chi Huang
  • Publication number: 20100027534
    Abstract: A system for handling packet-switched data transmission is provided. The system includes a first RF module, a second RF module, a first subscriber identity card camping on a cell via the first RF module, a second subscriber identity card camping on the same cell or a different cell via the second RF module and a load balancing unit. The load balancing unit receives an uplink IP packet, determines one subscriber identity card from the first and second subscriber identity cards when the uplink IP packet comprises information regarding an unestablished connection of a recognized application, and transmits the uplink IP packet to a destination via the determined subscriber identity card and the RF module corresponding to the determined subscriber identity card.
    Type: Application
    Filed: May 11, 2009
    Publication date: February 4, 2010
    Applicant: MEDIATEK INC.
    Inventors: Jing-Yi Wu, Chen-Hsuan Lee, Li-Chi Huang, Ying-Chieh Liao
  • Publication number: 20100015985
    Abstract: A method for controlling radio links in a cellular communication system. The method comprises: receiving an active set update message from the system controller via at least one of the first radio link and the second radio link at the first user equipment to direct the first user equipment to terminate the first radio link, determining a communication status of the first radio link according to a current quality of the first radio link and a current quality of the second radio link after receiving the active set update message, and managing the first radio link and the second radio link according to the communication status.
    Type: Application
    Filed: July 21, 2008
    Publication date: January 21, 2010
    Applicant: MEDIATEK INC.
    Inventors: Chia-Lan CHANG, Li-Chi HUANG
  • Publication number: 20090274123
    Abstract: A cell measurement method used in a mobile station camping on a serving cell is provided, wherein the serving cell sends system information of neighbor cells to the mobile station. A first set of the neighbor cells is determined based on a measurement rule for cell reselection. A second set of the neighbor cells is determined based on a report request for radio link establishment. A subset is chosen from the second set. Finally, the neighbor cells of a union of the first set and the subset are measured.
    Type: Application
    Filed: May 2, 2008
    Publication date: November 5, 2009
    Applicant: MEDIATEK INC.
    Inventors: Chia-Ian Chang, Li-Chi Huang, Ding-Chiang Tang
  • Publication number: 20060153221
    Abstract: Methods for IP configuration negotiation. Before terminal equipment (TE) enters a PPP mode, the TE directs a mobile terminal (MT) to perform a PDP Context Activation procedure. Then, the MT transmits a response to the TE, enabling the TE to enter PPP mode. A PPP link is then established between the TE and MT. Thereafter, the TE directs the MT to activate an IP, and the MT responds the TE according to a result of the PDP Context Activation procedure, such that the IP is activated in the TE.
    Type: Application
    Filed: December 2, 2005
    Publication date: July 13, 2006
    Inventor: Li-Chi Huang