Patents by Inventor Chang-Lan Tsai

Chang-Lan Tsai 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: 20230126312
    Abstract: A method for obtaining enrichment information and a controller are provided. The method includes: querying, by an enrichment information handling circuit, whether a database stores a first enrichment information corresponding to a user device in response to the enrichment information handling circuit receiving a first creation request associated with the user device from an application; triggering, by the enrichment information handling circuit, the application to subscribe to the database for enrichment information corresponding to the user device in response to determining that the database stores the first enrichment information corresponding to the user device; and pushing, by the database, second enrichment information to the application in response to presence of the second enrichment information corresponding to the user device in the database.
    Type: Application
    Filed: December 6, 2021
    Publication date: April 27, 2023
    Applicant: Industrial Technology Research Institute
    Inventors: Chang-Lan Tsai, Kai-Wen Chen, Yu-Chieh Wang
  • Patent number: 11451984
    Abstract: A resource management method, a resource management system, and a workload scheduling apparatus for network slicing are provided. In the method resource management, a service request related to an application type of a terminal device is received. A monitoring report of the terminal device is obtained according to the service request. The monitoring result relates to a condition of the radio resource used by the terminal device. A usage situation of a slicing resource is analyzed based on the slicing resource requested by the service request and the monitoring report to predict a predicted arrangement result of the slicing resource. The slicing resource requested by the service result is arranged according to the predicted arrangement result to transmit a corresponding setting configuration to the radio access network. The setting configuration serves to adjust the slicing resource. Accordingly, the request of the service and the current condition are fulfilled.
    Type: Grant
    Filed: December 25, 2020
    Date of Patent: September 20, 2022
    Assignee: Industrial Technology Research Institute
    Inventors: Chang-Lan Tsai, Wan-Yi Lin
  • Publication number: 20220150723
    Abstract: A resource management method, a resource management system, and a workload scheduling apparatus for network slicing are provided. In the method resource management, a service request related to an application type of a terminal device is received. A monitoring report of the terminal device is obtained according to the service request. The monitoring result relates to a condition of the radio resource used by the terminal device. A usage situation of a slicing resource is analyzed based on the slicing resource requested by the service request and the monitoring report to predict a predicted arrangement result of the slicing resource. The slicing resource requested by the service result is arranged according to the predicted arrangement result to transmit a corresponding setting configuration to the radio access network. The setting configuration serves to adjust the slicing resource. Accordingly, the request of the service and the current condition are fulfilled.
    Type: Application
    Filed: December 25, 2020
    Publication date: May 12, 2022
    Applicant: Industrial Technology Research Institute
    Inventors: Chang-Lan Tsai, Wan-Yi Lin
  • Patent number: 11146977
    Abstract: The present disclosure provides a method of maintaining the continuity of a transmission service and a service center. The method includes: receiving a consumption report from a user equipment, wherein the user equipment receives a first transmission service through a first bearer; in response to receiving a specific request, obtaining user identification information of the user equipment from the specific request; accessing the consumption report corresponding to the user equipment based on the user identification information, and obtaining first service information of the first transmission service from the consumption report; and controlling the user equipment to switch to use a second bearer to receive a second transmission service according to the first service information, wherein the first bearer is one of a unicast bearer and a broadcast bearer, and the second bearer is another of the unicast bearer and the broadcast bearer.
    Type: Grant
    Filed: November 5, 2019
    Date of Patent: October 12, 2021
    Assignee: Industrial Technology Research Institute
    Inventors: Chang-Lan Tsai, Wan-Yi Lin
  • Publication number: 20210105641
    Abstract: The present disclosure provides a method of maintaining the continuity of a transmission service and a service center. The method includes: receiving a consumption report from a user equipment, wherein the user equipment receives a first transmission service through a first bearer; in response to receiving a specific request, obtaining user identification information of the user equipment from the specific request; accessing the consumption report corresponding to the user equipment based on the user identification information, and obtaining first service information of the first transmission service from the consumption report; and controlling the user equipment to switch to use a second bearer to receive a second transmission service according to the first service information, wherein the first bearer is one of a unicast bearer and a broadcast bearer, and the second bearer is another of the unicast bearer and the broadcast bearer.
    Type: Application
    Filed: November 5, 2019
    Publication date: April 8, 2021
    Applicant: Industrial Technology Research Institute
    Inventors: Chang-Lan Tsai, Wan-Yi Lin
  • Publication number: 20180159602
    Abstract: A method for channel precoding adapted to a base station is provided. An exemplary embodiment of the method includes: using a channel to communicate with a user equipment; obtaining a channel state of the channel; calculating a user equipment condition parameter(s) according to the channel state; transmitting the user equipment condition parameter(s) to a server; receiving a channel prediction parameter from the server; performing channel prediction according to the channel prediction parameter to obtain a predicted channel state of the channel; transmitting the predicted channel state to the server; receiving a precoding parameter from the server; and performing precoding according to the precoding parameter.
    Type: Application
    Filed: December 19, 2016
    Publication date: June 7, 2018
    Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Chang-Lan TSAI, Chia-Hua LIN
  • Patent number: 9185689
    Abstract: A method for a base station to allocate resources to a mobile station, the resources being included in one or more subbands each including a plurality of resource units, the method including: allocating a part of a first one of the subbands to the mobile station, the part including one or more resource units in the first one of the subbands; and indicating to the mobile station the allocated part of the first one of the subbands by indicating a resource allocation pattern corresponding to the allocated part of the first one of the subbands.
    Type: Grant
    Filed: January 26, 2011
    Date of Patent: November 10, 2015
    Assignee: Industrial Technology Research Institute
    Inventors: Yan-Xiu Zheng, Chang-Lan Tsai
  • Patent number: 8743980
    Abstract: A method of designing a reference signal pattern for a network in a wireless communication system is disclosed. The method comprises transmitting a plurality of cell-specific reference signal (CRSs) in a subframe, the subframe comprising a plurality of resource elements that are divided in time across a plurality of subcarriers to form a plurality of orthogonal frequency division multiplexed (OFDM) symbols, each of the plurality of resource element occupying a predetermined amount of time on a respective one of the plurality of subcarriers. wherein, a first set of the plurality of CRSs is allocated to a first set of the plurality resource elements on a first symbol and a second symbol over a third subcarrier, a sixth subcarrier, a ninth subcarrier and a twelfth subcarrier.
    Type: Grant
    Filed: July 5, 2011
    Date of Patent: June 3, 2014
    Assignee: Acer Incorporated
    Inventors: Yan-Xiu Zheng, Chang-Lan Tsai, Chung-Lien Ho
  • Patent number: 8718101
    Abstract: A pilot selection method adapted for selecting rank-2 pilot patterns for a macrocell advanced base station (ABS), a femtocell ABS and a non-macrocell and non-femtocell ABS is proposed along with a wireless communication system and a base station thereof. Different rank-2 pilot pattern is selected for a femtocell ABS from its overlay macrocell ABS and non-macrocell and non-femtocell ABS rank-2 pilot patterns. Another pilot selection method for selecting a rank-1 pilot pattern for a femtocell ABS co-located with at least a macrocell ABS is also proposed. Different rank-1 pilot pattern is selected for a femtocell ABS from its overlay macrocell ABSs using rank-1 and/or rank-2 pilot patterns, where some of the macrocell ABSs can use rank-2 pilot patterns and the rest of the macrocell ABSs just use rank-1 pilot patterns. Also, different rank-1 pilot pattern is selected for the femtocell ABS from its neighboring femtocell ABSs using rank-1 pilot patterns.
    Type: Grant
    Filed: October 18, 2010
    Date of Patent: May 6, 2014
    Assignee: Acer Incorporated
    Inventors: Chung-Lien Ho, Chang-Lan Tsai, Yan-Xiu Zheng, Yu-Chuan Fang
  • Patent number: 8675540
    Abstract: A resource allocation method and a resource indication method for E-MBS system, and a mobile station using the same are proposed. The resource units of a first service flow are allocated following the end of the E-MBS MAP of the E-MBS region, along with the increasing of frequency domain index. When the edge of the E-MBS region in frequency domain is reached, the resource units of mth service flow are continued to be allocated from top frequency domain index in next time domain index, where m is an integer greater than or equal to 1. The resource units of m+1th service flow are allocated following the mth service flow, and such procedures are repeated until all service flows are allocated required resource units. The resource indication method indicates a specific service flow by absolute location in the E-MBS region formed based upon the resource allocation method.
    Type: Grant
    Filed: December 1, 2010
    Date of Patent: March 18, 2014
    Assignee: Acer Incorporated
    Inventors: Yan-Xiu Zheng, Yu-Chuan Fang, Tsung-Lien Ho, Chun-Yuan Chiu, Chang-Lan Tsai
  • Patent number: 8510621
    Abstract: A method of providing resource unit based data block partitioning may include determining, for a bit stream to be encoded in a coding scheme including an upper layer coding and a physical layer coding, whether upper layer coding is enabled. The method may further include, in response to the upper layer coding being enabled, partitioning the bit stream into one or more blocks for forward error correction coding. The one or more blocks may have a block size determined based on a size of a resource unit. The resource unit size may correspond to one or more units predefined in the physical layer for the resource allocation. A corresponding apparatus is also provided.
    Type: Grant
    Filed: December 22, 2010
    Date of Patent: August 13, 2013
    Assignee: Industrial Technology Research Institute
    Inventors: Yan-Xiu Zhang, Yu-Chuan Fang, Chang-Lan Tsai, Chung-Lien Ho
  • Patent number: 8351525
    Abstract: An orthogonal frequency division multiplexing (OFDM) receiving apparatus, including a receiving unit, a subcarrier demodulation unit and a signal output processing unit, is provided. The receiving unit is for receiving an RF signal to generate a set of discrete signals. The subcarrier demodulation unit is coupled to the receiving unit, and used for demodulating a set of discrete signals to obtain a complex signal. The signal output processing unit is coupled to the subcarrier demodulation unit, and used for capturing and outputting real parts of the complex signal.
    Type: Grant
    Filed: October 28, 2010
    Date of Patent: January 8, 2013
    Assignee: Industrial Technology Research Institute
    Inventors: Huan-Chun Wang, De-Jhen Huang, Chang-Lan Tsai
  • Publication number: 20120039405
    Abstract: A method of designing a reference signal pattern for a network in a wireless communication system is disclosed. The method comprises transmitting a plurality of cell-specific reference signal (CRSs) in a subframe, the subframe comprising a plurality of resource elements that are divided in time across a plurality of subcarriers to form a plurality of orthogonal frequency division multiplexed (OFDM) symbols, each of the plurality of resource element occupying a predetermined amount of time on a respective one of the plurality of subcarriers. wherein, a first set of the plurality of CRSs is allocated to a first set of the plurality resource elements on a first symbol and a second symbol over a third subcarrier, a sixth subcarrier, a ninth subcarrier and a twelfth subcarrier.
    Type: Application
    Filed: July 5, 2011
    Publication date: February 16, 2012
    Applicant: ACER INCORPORATED
    Inventors: Yan-Xiu Zheng, Chang-Lan Tsai, Chung-Lien Ho
  • Publication number: 20110195733
    Abstract: A method for a base station to allocate resources to a mobile station, the resources being included in one or more subbands each including a plurality of resource units, the method including: allocating a part of a first one of the subbands to the mobile station, the part including one or more resource units in the first one of the subbands; and indicating to the mobile station the allocated part of the first one of the subbands by indicating a resource allocation pattern corresponding to the allocated part of the first one of the subbands.
    Type: Application
    Filed: January 26, 2011
    Publication date: August 11, 2011
    Inventors: Yan-Xiu Zheng, Chang-Lan Tsai
  • Patent number: 7974358
    Abstract: An orthogonal frequency division multiplexing (OFDM) system provided for communication includes an OFDM transmitter and an OFDM receiver. The OFDM transmitter may be configured to transmit OFDM signals through a communication channel and may include a channel encoder configured to encode a plurality of information bits and an interleaver configured to interleave the channel-encoded information bits. The OFDM transmitter may also include a mapper configured to map the interleaved channel-encoded information bits into mapped multi-level symbols. The OFDM transmitter may also include a dispersive encoder that is configured to dispersively encode the mapped symbols. The OFDM receiver may be configured to receive the transmitted OFDM signals and to decode the received OFDM signals iteratively based on soft decision methods.
    Type: Grant
    Filed: October 26, 2006
    Date of Patent: July 5, 2011
    Assignee: Industrial Technology Research Institute
    Inventors: Chang-Lan Tsai, Chang-Lung Hsiao, Ren-Jr Chen, Char-Dir Chung
  • Publication number: 20110158148
    Abstract: A resource allocation method and a resource indication method for E-MBS system, and a mobile station using the same are proposed. The resource units of a first service flow are allocated following the end of the E-MBS MAP of the E-MBS region, along with the increasing of frequency domain index. When the edge of the E-MBS region in frequency domain is reached, the resource units of mth service flow are continued to be allocated from top frequency domain index in next time domain index, where m is an integer greater than or equal to 1. The resource units of m+1th service flow are allocated following the mth service flow, and such procedures are repeated until all service flows are allocated required resource units. The resource indication method indicates a specific service flow by absolute location in the E-MBS region formed based upon the resource allocation method.
    Type: Application
    Filed: December 1, 2010
    Publication date: June 30, 2011
    Applicant: ACER INCORPORATED
    Inventors: Yan-Xiu Zheng, Yu-Chuan Fang, Tsung-Lien Ho, Chun-Yuan Chiu, Chang-Lan Tsai
  • Publication number: 20110161771
    Abstract: A method of providing resource unit based data block partitioning may include determining, for a bit stream to be encoded in a coding scheme including an upper layer coding and a physical layer coding, whether upper layer coding is enabled. The method may further include, in response to the upper layer coding being enabled, partitioning the bit stream into one or more blocks for forward error correction coding. The one or more blocks may have a block size determined based on a size of a resource unit. The resource unit size may correspond to one or more units predefined in the physical layer for the resource allocation. A corresponding apparatus is also provided.
    Type: Application
    Filed: December 22, 2010
    Publication date: June 30, 2011
    Inventors: Yan-Xiu Zheng, Yu-Chuan Fang, Chang-Lan Tsai, Chung-Lien Ho
  • Publication number: 20110159882
    Abstract: A pilot selection method adapted for selecting rank-2 pilot patterns for a macrocell advanced base station (ABS), a femtocell ABS and a non-macrocell and non-femtocell ABS is proposed along with a wireless communication system and a base station thereof. Different rank-2 pilot pattern is selected for a femtocell ABS from its overlay macrocell ABS and non-macrocell and non-femtocell ABS rank-2 pilot patterns. Another pilot selection method for selecting a rank-1 pilot pattern for a femtocell ABS co-located with at least a macrocell ABS is also proposed. Different rank-1 pilot pattern is selected for a femtocell ABS from its overlay macrocell ABSs using rank-1 and/or rank-2 pilot patterns, where some of the macrocell ABSs can use rank-2 pilot patterns and the rest of the macrocell ABSs just use rank-1 pilot patterns. Also, different rank-1 pilot pattern is selected for the femtocell ABS from its neighboring femtocell ABSs using rank-1 pilot patterns.
    Type: Application
    Filed: October 18, 2010
    Publication date: June 30, 2011
    Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Chung-Lien Ho, Chang-Lan Tsai, Yan-Xiu Zheng, Yu-Chuan Fang
  • Publication number: 20110038250
    Abstract: An orthogonal frequency division multiplexing (OFDM) receiving apparatus, including a receiving unit, a subcarrier demodulation unit and a signal output processing unit, is provided. The receiving unit is for receiving an RF signal to generate a set of discrete signals. The subcarrier demodulation unit is coupled to the receiving unit, and used for demodulating a set of discrete signals to obtain a complex signal. The signal output processing unit is coupled to the subcarrier demodulation unit, and used for capturing and outputting real parts of the complex signal.
    Type: Application
    Filed: October 28, 2010
    Publication date: February 17, 2011
    Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Huan-Chun Wang, De-Jhen Huang, Chang-Lan Tsai
  • Patent number: 7852955
    Abstract: An orthogonal frequency division multiplexing (OFDM) transmitting apparatus including a signal processing unit, a subcarrier orthogonalization processing unit, and a transmitting unit is provided. The signal processing unit divides a received signal into several real parts and several corresponding imaginary parts. The subcarrier orthogonalization processing unit is coupled to the signal processing unit for receiving the real and the imaginary parts of the signal, and for making the real and the imaginary parts respectively carried by a plurality of different and orthogonal subcarriers. The transmitting unit is coupled to the subcarrier orthogonalization processing unit to transmit the subcarriers.
    Type: Grant
    Filed: July 20, 2007
    Date of Patent: December 14, 2010
    Assignee: Industrial Technology Research Institute
    Inventors: Huan-Chun Wang, De-Jhen Huang, Chang-Lan Tsai