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).

  • Publication number: 20200154241
    Abstract: A method, executed by a SUPL (Secure User Plane Location) Enabled Terminal (SET), is provided. The method includes the steps of: sending an INVITE request for an emergency call to a Call Session Control Function (CSCF) entity of an IP Multimedia Subsystem (IMS); and receiving a response to the INVITE request from the CSCF entity, wherein the response includes an SUPL INIT message.
    Type: Application
    Filed: November 7, 2019
    Publication date: May 14, 2020
    Inventors: Rohit NAIK, Chien-Chun HUANG-FU
  • Publication number: 20200154307
    Abstract: Various examples and schemes pertaining to error handling on missing configuration for inter-system change in mobile communications are described. An apparatus performs a protocol data unit (PDU)-related procedure with a wireless network. The apparatus detects whether there is an error in the PDU-related procedure and the apparatus handles the error in response to detecting the error in the PDU-related procedure.
    Type: Application
    Filed: November 11, 2019
    Publication date: May 14, 2020
    Inventors: Chien-Chun Huang-Fu, Shang-Ru Mo, Chi-Hsien Chen
  • Publication number: 20200154379
    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: Application
    Filed: November 11, 2019
    Publication date: May 14, 2020
    Inventors: Chien-Chun Huang-Fu, Shang-Ru Mo, Chi-Hsien Chen
  • Publication number: 20200120561
    Abstract: A method of handling invalid PDU session during handover procedure between non-3GPP access and 3GPP access in a mobile communication network is proposed. A UE establishes a PDU session over a first RAT, and then tries to handover the PDU session from the first RAT to a second RAT. However, at the network side, the PDU session over the first RAT does not exist anymore and the network considers the PDU session to be invalid. The network thus sends a PDU session establishment reject message back to the UE, with a 5GSM status message cause value #54 indicating “PDU session does not exist”. At the UE side, the PDU session over the first RAT is still valid (e.g., not inactive). In order to resynchronize with the network, the UE performs a PDU session release procedure to release the PDU session over the first RAT.
    Type: Application
    Filed: October 15, 2019
    Publication date: April 16, 2020
    Inventors: Chien-Chun Huang-Fu, Chi-Hsien Chen
  • Publication number: 20200113002
    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: Application
    Filed: October 4, 2019
    Publication date: April 9, 2020
    Inventor: Chien-Chun Huang-Fu
  • Publication number: 20200112874
    Abstract: Aspects of the disclosure provide a method for reflective quality of service (QoS) control and management at a user equipment (UE). The method can include creating a derived QoS rule belonging to a session and having a QoS flow identifier (QFI). The derived QoS rule includes a precedence value that is set to one of a precedence value associated with a session identifier (ID) of the session received from a core network (CN) of a wireless communication system during a session establishment procedure for establishing the session, a precedence value associated with the QFI received from the CN during the session establishment procedure for establishing the session or when a downlink QoS flow having the QFI is added to the session, or a precedence value that is defined by an operator of the wireless communication system.
    Type: Application
    Filed: December 6, 2019
    Publication date: April 9, 2020
    Applicant: MEDIATEK INC.
    Inventors: Yu-Syuan Jheng, Pavan Nuggehalli, Guillaume Sebire, Chien-Chun Huang-Fu, Per Johan Mikael Johansson
  • Publication number: 20200113009
    Abstract: Various examples and schemes pertaining to handling of invalid mandatory information in mobile communications are described. An apparatus (e.g., a user equipment (UE)) receives a 5th Generation session management (5GSM) message from a network node of a wireless network. The apparatus determines that there is an error encountered with a mandatory information element (IE) in the 5GSM message. The apparatus handles the error in a way specific to a protocol data unit (PDU) session procedure corresponding to the 5GSM message.
    Type: Application
    Filed: October 4, 2019
    Publication date: April 9, 2020
    Inventors: Chien-Chun Huang-Fu, Yu-Chieh Tien, Chi-Hsien Chen
  • Publication number: 20200113014
    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: Application
    Filed: October 4, 2019
    Publication date: April 9, 2020
    Inventors: Chien-Chun Huang-Fu, Chi-Hsien Chen, Yu-Chieh Tien
  • Publication number: 20200112900
    Abstract: Various examples and schemes pertaining to enhancement of Internet Protocol (IP) Multimedia Subsystem (IMS) signaling reliability in mobile communications are described. A processor of an apparatus receives, at a layer 2 of a New Radio (NR) protocol stack, a packet for a specific type of signaling from an application layer of the NR protocol stack. The processor identifies, at the layer 2, one data radio bear (DRB) to be used for delivery of the packet. The processor then activates a reliability enhancement mechanism for the identified DRB such that a retransmission of the packet via the identified DRB is coordinated at the layer 2 or a layer above the layer 2.
    Type: Application
    Filed: October 4, 2019
    Publication date: April 9, 2020
    Inventors: Chien-Chun Huang-Fu, Ming-Cong Sun, Wei-Chiang Peng
  • Publication number: 20200113004
    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: Application
    Filed: October 4, 2019
    Publication date: April 9, 2020
    Inventors: Chien-Chun Huang-Fu, Chi-Hsien Chen, Yu-Chieh Tien
  • Patent number: 10609095
    Abstract: A method to manage call continuity in a network environment including a circuit-switched network and an IP multimedia subsystem (IMS) network is provided. A UE monitors one or more ongoing sessions in an IMS network, and the ongoing sessions contain at least one conference call. The UE detects a network-switching event for the UE to switch from the IMS network to a circuit-switched CS network. The UE then determines the one or more ongoing sessions within the IMS network to be released or transferred to the CS network. Finally, the UE performs a session transfer procedure for transferring the determined sessions.
    Type: Grant
    Filed: August 18, 2017
    Date of Patent: March 31, 2020
    Assignee: HFI Innovation INC.
    Inventors: Yu-Syuan Jheng, Chien-Chun Huang-Fu, Nuan-Yu Yang
  • Publication number: 20200053642
    Abstract: Examples pertaining to flexible radio access technology (RAT) selection for 5th Generation (5G) mobile communications are described. A user equipment (UE) may receive, from a network node of a wireless network, information related to a RAT preference with respect to RAT selection by the UE. Based at least in part on the received information, the UE may perform a RAT or Public Land Mobile Network (PLMN) selection procedure. Alternatively, or additionally, the UE may receive, from the network node, information related to ability of one or more neighbor network nodes of one or more RATs in a region. Based at least in part on the received information, the UE may select one of the one or more RATs or one of the one or more neighbor network nodes.
    Type: Application
    Filed: August 8, 2019
    Publication date: February 13, 2020
    Inventors: Chien-Chun Huang-Fu, Hung-Lin Chang, Tsung-Wei Tu, Yen-Chih Yang
  • Publication number: 20200053596
    Abstract: A method of QoS rule management with enhanced handling on QoS flow description is proposed. UE checks QoS configuration received from the network for QoS operation errors. When UE receives a QoS rule associated with a specific QFI but has no QoS flow description for the QFI, UE further determines whether the QoS rule is of a GBR QoS flow. If so, UE detects a QoS operation error. If the QoS rule is the default QoS rule, then UE releases the PDU session. If the QoS rule is not the default QoS rule, then UE either rejects a PDU session modification command that carries the QoS rule or deletes the QoS rule carried by a PDU session establishment accept with a 5GSM cause value indicating the QoS operation error.
    Type: Application
    Filed: August 2, 2019
    Publication date: February 13, 2020
    Inventors: Chien-Chun Huang-Fu, Chi-Hsien Chen, Shang-Ru Mo
  • Publication number: 20200053010
    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: Application
    Filed: July 30, 2019
    Publication date: February 13, 2020
    Inventors: Chien-Chun Huang-Fu, Chi-Hsien Chen
  • Publication number: 20200053819
    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: Application
    Filed: August 6, 2019
    Publication date: February 13, 2020
    Inventors: Chien-Chun Huang-Fu, Yu-Chieh Tien, Shang-Ru Mo, Chi-Hsien Chen
  • Publication number: 20200053603
    Abstract: A method for handling PDU session handover procedure collision in a next generation NG/5G system is proposed. Both network-triggered and UE-triggered PDU session handover procedures can occur at the same time. If Paging or Notification for PDU session handover comes before UE initiated MO PDU session establishment procedure for PDU session handover, then UE should avoid sending the PDU session establishment request for PDU session handover but only send the service request as a response to paging. On the other hand, if Paging or Notification for PDU session handover comes after UE initiated MO PDU session establishment procedure for PDU session handover, then UE should avoid sending the service request for PDU session handover but proceed with the PDU session establishment procedure as a response to paging.
    Type: Application
    Filed: August 8, 2019
    Publication date: February 13, 2020
    Inventors: Chien-Chun Huang-Fu, Chi-Hsien Chen
  • Publication number: 20200053622
    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: August 8, 2019
    Publication date: February 13, 2020
    Inventors: Chien-Chun Huang-Fu, Meng-Ting Tsai
  • Publication number: 20200053134
    Abstract: A solution of supporting IP multimedia subsystem (IMS) call setup in a next generation system (5GS) is proposed. During a registration procedure, the network sends indications to a user equipment (UE) indicating whether IMS voice over PS session (VoPS) over 3GPP access and over non-3GPP access is supported or not. The indications comprise two independent indicators, one indicator for indicating whether IMS VoPS is supported over 3GPP access, and the other indicator for indicating whether IMS VoPS is supported over non-3GPP access. In one example, the two independent indicators are included in a 5GS network feature support information element (IE) carried by a registration accept message sent from the network during the registration procedure.
    Type: Application
    Filed: August 6, 2019
    Publication date: February 13, 2020
    Inventors: Marko Niemi, Chien-Chun Huang-Fu
  • Patent number: 10542454
    Abstract: Aspects of the disclosure provide a method for reflective quality of service (QoS) control and management at a user equipment (UE). The method can include creating a derived QoS rule belonging to a session and having a QoS flow identifier (QFI). The derived QoS rule includes a precedence value that is set to one of a precedence value associated with a session identifier (ID) of the session received from a core network (CN) of a wireless communication system during a session establishment procedure for establishing the session, a precedence value associated with the QFI received from the CN during the session establishment procedure for establishing the session or when a downlink QoS flow having the QFI is added to the session, or a precedence value that is defined by an operator of the wireless communication system.
    Type: Grant
    Filed: February 9, 2018
    Date of Patent: January 21, 2020
    Assignee: MEDIATEK INC.
    Inventors: Yu-Syuan Jheng, Pavan Nuggehalli, Guillaume Sebire, Chien-Chun Huang-Fu, Per Johan Mikael Johansson
  • Publication number: 20200008106
    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: July 1, 2019
    Publication date: January 2, 2020
    Inventors: Chien-Chun Huang-Fu, Po-Ying Chuang