Patents by Inventor Chien-Chun Huang-Fu

Chien-Chun Huang-Fu 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).

  • AT-command for always-on PDU session
    Patent number: 11184934
    Abstract: Various examples and schemes pertaining to an AT-command for an always-on PDU session in mobile communications are described. A processor of an apparatus implemented as a user equipment (UE) establishes a protocol data unit (PDU) session between a modem of the apparatus and a network node of a wireless network in response to a trigger by an application executed on the processor. The processor forwards a query from the application to the modem for an indication provided by the network node on whether the established PDU session is an always-on PDU session. The processor then receives the indication provided by the network node from the modem.
    Type: Grant
    Filed: October 4, 2019
    Date of Patent: November 23, 2021
    Inventor: Chien-Chun Huang-Fu
  • Handling of IP 3 Tuple Component
    Publication number: 20210337456
    Abstract: A method for configuring Route Selection Policy (URSP) rules with IP 3 tuples as a traffic descriptor component is proposed. URSP is used by a user equipment (UE) to determine if a detected application can be associated to an established Protocol Data Unit (PDU) session, can be offloaded to non-3GPP access outside a PDU session, or can trigger the establishment of a new PDU session. URSP can be configured by the network to the UE. A new component is introduced which can include three parameters of IP 3 tuple for URSP configuration. Upon receiving the new component for IP 3 tuple component, the UE may discover certain errors and determine corresponding error handling.
    Type: Application
    Filed: March 17, 2021
    Publication date: October 28, 2021
    Inventor: Chien-Chun Huang-Fu
  • 5G session management handling on PSI mismatch
    Patent number: 11160123
    Abstract: A method of handling PDU session identity (PSI) mismatch for PDU session procedures is proposed. In case a user equipment (UE) receives a 5G session management (5GSM) message in which the PSI value indicates that the PDU session is in 5GSM state PDU SESSION INACTIVE, the UE stays in its current 5GSM state for the PDU session and responds with a 5GSM status message including a 5GSM cause #43 “Invalid PDU session identity” to reduce signaling and UE handling effort. In case the UE receives a 5GSM message in which the PSI value is a reserved or an assigned value, the UE stays in its current 5GSM state for the PDU session and ignores the 5GSM message to reduce signaling.
    Type: Grant
    Filed: October 4, 2019
    Date of Patent: October 26, 2021
    Assignee: MediaTek INC.
    Inventors: Chien-Chun Huang-Fu, Chi-Hsien Chen, Yu-Chieh Tien
  • Handling of mapped EPS bearer context for invalid QoS flow description
    Patent number: 11159976
    Abstract: A method of handling mapped Evolved Packet System (EPS) bearer context for invalid QoS flow description is proposed. During a PDU session establishment procedure or a PDU session modification procedure, a UE may receive a mapped EPS bearer context IE for creating a new mapped EPS bearer of a PDU session. If there is no corresponding QoS flow description associated to the new mapped EPS bearer, e.g., if there is no corresponding authorized QoS flow description IE in the PDU session establishment accept message or in the PDU session modification command message, then the UE should send another PDU session modification request message to the network to delete the new mapped EPS bearer context.
    Type: Grant
    Filed: November 18, 2019
    Date of Patent: October 26, 2021
    Assignee: MediaTek INC.
    Inventors: Chien-Chun Huang-Fu, Shang-Ru Mo, Chi-Hsien Chen
  • Handling of QoS flow description without valid EPS bearer context
    Patent number: 11153925
    Abstract: A method of handling QoS flow descriptions with invalid EPS bearer context is proposed. During an EPS bearer activation or modification procedure, a UE may receive an ePCO/PCO IE for creating a new QoS flow description or modifying an existing QoS flow description. if UE detects that the to be created/modified QoS flow descriptions are associated with invalid EPS bearer context, then UE does, not create/modify the QoS flow descriptions. Instead, UE locally deletes the QoS flow descriptions provided by the network. In addition, UE indicates a 5GSM cause to the network via PCO/ePCO. As a result, when inter-system change from EPS to 5GS happens, UE no longer needs to handle the QoS flow descriptions with invalid EPS bearer context.
    Type: Grant
    Filed: January 9, 2020
    Date of Patent: October 19, 2021
    Assignee: MediaTek INC.
    Inventors: Chien-Chun Huang-Fu, Chi-Hsien Chen, Shang-Ru Mo
  • Quality of service rule management in 5G
    Patent number: 11153797
    Abstract: A method of managing default QoS rules for PDU session is proposed. A PDU session defines the association between the UE and the data network that provides a PDU connectivity service. Each PDU session is identified by a PDU session ID, and may include multiple QoS flows and QoS rules. There can be more than one QoS rule associated with the same QoS flow. A default QoS rule is required to be sent to the UE for every PDU session establishment and it is associated with a QoS flow. Within a PDU session, there should be one and only one default QoS rule. In one novel aspect, UE behavior and error handling for proper QoS rule management is defined for PDU session establishment and modification procedures to enforce the one and only one default QoS rule policy.
    Type: Grant
    Filed: March 27, 2019
    Date of Patent: October 19, 2021
    Assignee: MediaTek INC.
    Inventors: Chien-Chun Huang-Fu, Po-Ying Chuang
  • Apparatuses and methods for handling location information
    Patent number: 11147125
    Abstract: A User Equipment (UE) including a Universal Integrated Circuit Card (UICC) and a Mobile Equipment (ME) is provided. The ME is coupled to the UICC, and is configured to determine whether the UICC supports a first RAT in response to the UE operating in a cell which utilizes the first RAT, and use a data object for a second RAT to accommodate location information for the first RAT in response to the UICC not supporting the first RAT.
    Type: Grant
    Filed: March 5, 2020
    Date of Patent: October 12, 2021
    Assignee: MEDIATEK SINGAPORE PTE. LTD.
    Inventors: Marko Niemi, Ting-Wen Chen, Chien-Chun Huang-Fu
  • Interworking between fifth generation system (5GS) and evolved packet system (EPS) for session management
    Patent number: 11134419
    Abstract: Aspects of the disclosure provide a method of checking errors in parameters configured to a user equipment (UE). The method can include receiving at the UE a quality of service (QoS) rule related IE or the QoS flow description related IE for modifying or creating a QoS rule or a QoS flow description associated with an evolved packet system (EPS) bearer context of a packet data network (PDN) connection. The PDN connection can have a default EPS bearer context and optionally a dedicated EPS bearer context. It is determined whether the default EPS bearer context of the PDN connection is associated with a default QoS rule. When it is determined that the default EPS bearer context of the PDN connection is not associated with the default QoS rule, an error handling operation is performed.
    Type: Grant
    Filed: February 13, 2020
    Date of Patent: September 28, 2021
    Assignee: MEDIATEK INC.
    Inventor: Chien-Chun Huang-Fu
  • Handling QoS rules on QoS operation errors
    Patent number: 11115896
    Abstract: A method of enhanced error handling for 5G QoS operations associated with a PDU session is proposed. A QoS operation can be received via a PDU session modification procedure. In one example, the QoS operation is to create a new QoS rule for a PDU session, however, there is an existing QoS rule having the same QoS rule ID (QRI). The UE detects whether the QoS operation will causing the PDU session have no default QoS rule or have more than one default QoS rules. If the existing QoS rule is a default QoS rule, or if the new QoS rule have a default QoS rule (DQR) indication bit set to be true, then the UE rejects the QoS operation and indicates a QoS operation error to the network.
    Type: Grant
    Filed: March 25, 2020
    Date of Patent: September 7, 2021
    Assignee: MediaTek INC.
    Inventors: Chien-Chun Huang-Fu, Chi-Hsien Chen
  • Enhanced Handling on 5G QoS Operations
    Publication number: 20210266794
    Abstract: A method of enhanced error handling for 5G QoS operations is proposed. A PDU session defines the association between the UE and the data network that provides a PDU connectivity service. Each PDU session is identified by a PDU session ID, and may include multiple QoS flows and QoS rules. Within a PDU session, there should be one and only one default QoS rule. The default QoS rule indication (DQR) and the QoS flow identifier (QFI) of a signaled QoS rule should not be changed. Two new 5G session management (5GSM) causes are defined: a semantic error in the QoS operation (cause value #83) and a syntactic error (cause value #84) in the QoS operation. The UE should check the QoS rule provided in a PDU session modification command message for different types of QoS rule errors.
    Type: Application
    Filed: May 11, 2021
    Publication date: August 26, 2021
    Inventors: Chien-Chun Huang-Fu, Po-Ying Chuang
  • Handling of Multi-Access PDU Session Upgrade
    Publication number: 20210250409
    Abstract: A method of handling multi-access (MA) Protocol data unit (PDU) session upgrade is proposed. An MA PDU session. uses one 3GPP access network or one non-3GPP access network at a time, or simultaneously one 3GPP access network and one non-3GPP access network. A UE may be served by a network slice if a corresponding Single Network Slice Selection Assistance Information (S-NSSAI) is included in the allowed NSSAI per Radio Access Technology (RAT) access type. In accordance with one novel aspect, a UE performs additional check on whether the S-NSSAI associated with an MA PDU session is included in the allowed NSSAI for both 3GPP and non-3GPP access types before the UE sending out a PDU session establishment request or a PDU session modification request of the MA PDU session.
    Type: Application
    Filed: January 5, 2021
    Publication date: August 12, 2021
    Inventor: Chien-Chun Huang-Fu
  • Enhanced UE Route Selection Policy (URSP) Rule Matching
    Publication number: 20210243664
    Abstract: A method for UE route selection policy (URSP) rule matching is proposed. URSP is used by a UE to determine if a detected application can be associated to an established PDU session, can be offload to non-3GPP access outside a PDU session, or can trigger the establishment of a new PDU session. The UE first finds a non-default URSP rule with a matching traffic descriptor to the application. When the UE fails to find existing PDU session or setup new PDU session with any or the route selection descriptors of the non-default URSP rule, the UE moves to another non-default URSP rule, if any, and try the matching. If all non-default URSP rules cannot be matched with the application, then the UE tries the default URSP rule, which includes a match-all traffic descriptor.
    Type: Application
    Filed: April 21, 2021
    Publication date: August 5, 2021
    Inventors: Chien-Chun Huang-Fu, Meng-Ting Tsai
  • Enhanced handling on forbidden PLMN list
    Patent number: 11071043
    Abstract: A method of enhanced handling of a Forbidden Public Land Mobile Network (PLMN) list is proposed. When a UE tries to attach to a PLMN and receives an ATTACH Reject message having no integrity protection, it could be transmitted from a network entity trying to block the PLMN for providing service. Therefore, by introducing a temporary forbidden PLMN list and a timer T3247, UE can avoid adding the PLMN ID to the Forbidden PLMN list and avoid being blocked for network access. Instead, UE is only temporary refrained from selecting the PLMN ID and is able to retry for the network access after T3247 expiry. The temporary list together with T3247 mechanism thus gives UE more opportunity to try with the same PLMN ID at a different time and/or a different UE location, where the malicious blocking is no longer available.
    Type: Grant
    Filed: May 10, 2019
    Date of Patent: July 20, 2021
    Assignee: MediaTek INC.
    Inventors: Chien-Chun Huang-Fu, Marko Niemi
  • Synchronization of QoS flows and rules in mobile communications
    Patent number: 11064450
    Abstract: Various examples and schemes pertaining to synchronization of quality of service (QoS) flows and rules in mobile communications are described. An apparatus establishes one or more protocol data unit (PDU) sessions with a wireless network. The apparatus then transmits a message to the wireless network to result in synchronization of status of at least one or more aspects related to QoS rules or QoS flows with respect to the one or more PDU sessions.
    Type: Grant
    Filed: November 11, 2019
    Date of Patent: July 13, 2021
    Inventors: Chien-Chun Huang-Fu, Shang-Ru Mo, Chi-Hsien Chen
  • APPARATUSES AND METHODS FOR MULTI-RADIO ACCESS TECHNOLOGY (RAT) COORDINATION
    Publication number: 20210212155
    Abstract: A User Equipment (UE) including a wireless transceiver and a controller is provided. The wireless transceiver performs wireless transmission and reception to and from a first service network utilizing a first RAT or a second service network utilizing a second RAT. The controller sends an indicator of a connection release request to the first service network via the wireless transceiver in response to terminating a first communication service with the first service network or in response to leaving the first service network for the second service network. Also, the controller releases a Radio Resource Control (RRC) connection with the first service network after sending the indicator of the connection release request.
    Type: Application
    Filed: December 16, 2020
    Publication date: July 8, 2021
    Inventors: Chien-Chun HUANG-FU, Chun-Fan TSAI, I-Kang FU, Chin-Chia CHANG
  • Handling 5G QoS rules on QoS operation errors
    Patent number: 11039369
    Abstract: A method at enhanced error handling for 5G QoS operations is proposed. A PDU session defines the association between the UE and the data network that provides a PDU connectivity service. Each PDU session is identified by a PDU session ID, and may include multiple QoS flows and QoS rules. Within a PDU session, there should be one and only one default QoS rule. The default QoS rule indication (DQR) and the QoS flow identifier (QFI) of QoS rule should not be changed. When the QoS operation carried by the command message is “Modify existing QoS rule and delete packet filters”, then it is defined as a semantic error in the QoS operation if all the packet filters of a QoS rule are deleted, and the QoS rule is a QoS rule of a PDU session of IPv4, IPv6, IPv4v6, or Ethernet PDU session type.
    Type: Grant
    Filed: July 30, 2019
    Date of Patent: June 15, 2021
    Assignee: MediaTek INC.
    Inventors: Chien-Chun Huang-Fu, Chi-Hsien Chen
  • Enhanced 5GSM state mapping when interworking
    Patent number: 11039361
    Abstract: A method of 5G session management (5GSM) state mapping is proposed when interworking. For each PDU session in 5GSM state of PDU SESSION active, PDU SESSION MODIFICATION PENDING, or PDU SESSION INACTIVE PENDING, UE maps the PDU session to a PDN connection in 4G ESM state BEARER CONTEXT ACTIVE. For any other PDU session in 5GSM state of PDU SESSION inactive, or PDU SESSION ACTIVE PENDING, UE maps the PDU session to a PDN connection in 4G ESM state BEARER CONTEXT INACTIVE.
    Type: Grant
    Filed: August 6, 2019
    Date of Patent: June 15, 2021
    Assignee: MediaTek INC.
    Inventors: Chien-Chun Huang-Fu, Yu-Chieh Tien, Shang-Ru Mo, Chi-Hsien Chen
  • Method and apparatus for inter-system change in wireless communication
    Patent number: 11026127
    Abstract: Aspects of the disclosure provide an electronic apparatus and methods for wireless communication. The electronic apparatus can include processing circuitry configured to identify, during an inter-system change of the electronic apparatus from a source network system to a target network system, at least one source session bearer between the electronic apparatus and the source network system. The processing circuitry can further map the at least one identified source session bearer to at least one target session bearer based on a mapping relationship that matches the at least one identified source session bearer with the at least one target session bearer to be established between the electronic apparatus and the target network system.
    Type: Grant
    Filed: February 13, 2019
    Date of Patent: June 1, 2021
    Assignee: MEDIATEK INC.
    Inventors: Chien-Chun Huang-Fu, Yuan-Chieh Lin
  • Enhanced handling on 5G QoS operations
    Patent number: 11026124
    Abstract: A method of enhanced error handling for 5G QoS operations is proposed. A PDU session defines the association between the UE and the data network that provides a PDU connectivity service. Each PDU session is identified by a PDU session ID, and may include multiple QoS flows and QoS rules. Within a PDU session, there should be one and only one default QoS rule. The default QoS rule indication (DQR) and the QoS flow identifier (QFI) of a signaled QoS rule should not be changed. Two new 5G session management (5GSM) causes are defined: a semantic error in the QoS operation (cause value #83) and a syntactic error (cause value #84) in the QoS operation. The UE should check the QoS rule provided in a PDU session modification command message for different types of QoS rule errors.
    Type: Grant
    Filed: July 1, 2019
    Date of Patent: June 1, 2021
    Assignee: MEDIATEK INC.
    Inventors: Chien-Chun Huang-Fu, Po-Ying Chuang
  • Handling of collision between PDU session establishment and release procedures
    Patent number: 11026275
    Abstract: A method of handling collision between PDU session establishment and PDU session release procedures is proposed. At UE side, a UE first initiates a PDU session establishment procedure to establish a PDU session having a PDU session ID. If UE receives a PDU session release command message on the same PSI, UE should ignore the PDU session release command message, and proceed with the PDU session establishment procedure. At NW side, a network entity initiates a PDU session release procedure to release a PDU session having a PDU session ID. If the network entity receives a PDU session establishment request message from UE on the same PDU session ID, the network entity should locally release the PDU session and proceed with the PDU session establishment procedure.
    Type: Grant
    Filed: October 4, 2019
    Date of Patent: June 1, 2021
    Assignee: MEDIATEK INC.
    Inventors: Chien-Chun Huang-Fu, Chi-Hsien Chen, Yu-Chieh Tien