Patents by Inventor Chen-Ho Chin

Chen-Ho Chin 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: 20210045019
    Abstract: A method performed by user equipment (UE) includes receiving a request to access a service unavailable through a first network cell associated with the UE, and receiving a message from an access device associated with the first network cell, wherein the message identifies a plurality of second network cells providing the service.
    Type: Application
    Filed: October 26, 2020
    Publication date: February 11, 2021
    Inventors: Richard Charles BURBIDGE, Takashi SUZUKI, David Philip HOLE, Johanna Lisa DWYER, Venkata Ratnakar Rao RAYAVARAPU, Maiyuran WIJAYANATHAN, Stephen McCann, Mark EARNSHAW, Chen-Ho CHIN
  • Patent number: 10911984
    Abstract: Some demonstrative embodiments include devices, systems and methods of providing offloadability information to a User Equipment (UE). For example, a core network (CN) may provide to the UE Packet Data Network (PDN) offloadability information corresponding to one or more PDN connections of the UE, the PDN offloadability information indicating which PDN connection of the one or more PDN connections is able to be offloaded to a Wireless Local Area Network (WLAN).
    Type: Grant
    Filed: October 4, 2017
    Date of Patent: February 2, 2021
    Assignee: APPLE INC.
    Inventors: Alexander Sirotkin, Alexandre S. Stojanovski, Vivek Gupta, Chen-Ho Chin
  • Publication number: 20200275339
    Abstract: In some examples, a user equipment (UE) obtains a connectivity in a first cell, the connectivity identified by an access point name (APN), where the APN corresponds to a first type of connection, and where the first type of connection provides access to services in a local data network. The UE camps on a second cell, determines if the connectivity is not supported in the second cell based on broadcast information from the second cell, the broadcast information comprising information of the second cell, and in response to determining that the connectivity is not supported in the second cell, disconnect the connectivity, wherein the disconnecting comprises sending a Non Access Stratum (NAS) message via the second cell.
    Type: Application
    Filed: May 13, 2020
    Publication date: August 27, 2020
    Inventors: Chen Ho Chin, Noun Choi, Stefano Faccin
  • Patent number: 10743366
    Abstract: A mobility management node in A core network receives a first Non Access Stratum (NAS) message via a second network element from a user equipment (UE), wherein the mobility management node stores a first identifying characteristic associated with at least one of a Local IP Access (LIPA) packet data network (PDN) connection or a selected IP traffic offload (SIPTO) PDN connection, the at least one of the LIPA PDN connection or the SIPTO PDN connection being via a first network element and for the UE. The mobility management node detects that the UE is connected to the second network element that is different from the first network element that has the first identifying characteristic, and in response to a condition that each PDN connection of the UE is a LIPA PDN connection or a SIPTO PDN connection, sends a second NAS message, the second NAS message including a cause code with a value that represents “No EPS Bearer Context Activated.
    Type: Grant
    Filed: December 20, 2018
    Date of Patent: August 11, 2020
    Assignee: BlackBerry Limited
    Inventors: Noun Choi, Stefano Faccin, Chen Ho Chin
  • Patent number: 10736026
    Abstract: Methods and apparatus to manage voice service in evolved packet systems are disclosed. An example method in a User Equipment (UE) with a first indicator related to voice services in an Evolved Packet System (EPS) comprises receiving a Non Access Stratum (NAS) protocol response message with a second indicator and responsive to at least one of the first indicator or the second indicator, determining availability of voice services over IP Multimedia Subsystem (IMS) in at least one of long term evolution (LTE) or global system for mobile communications edge radio access network (GERAN)/universal mobile telecommunications system terrestrial radio access network (UTRAN).
    Type: Grant
    Filed: June 3, 2010
    Date of Patent: August 4, 2020
    Assignee: 3G Licensing S.A.
    Inventors: Johanna Lisa Dwyer, Richard Charles Burbidge, Stefano Faccin, Chen Ho Chin
  • Patent number: 10701611
    Abstract: In some examples, a method in a core network communicatively connected with a first radio access network (RAN) comprising a first network element, and a second RAN comprising a second network element, includes receiving a first Non Access Stratum (NAS) message via the second network element from a User Equipment (UE), where the UE has, with the first network element, a selected IP traffic offload (SIPTO) PDN connection. The mobility management node detects that the UE is connected to the second network element that is different from the first network element that has a first identifying characteristic, where the detecting comprises determining that the first NAS message is received with a second identifying characteristic of the second network element different from the first identifying characteristic associated with the SIPTO PDN connection.
    Type: Grant
    Filed: June 7, 2018
    Date of Patent: June 30, 2020
    Assignee: BlackBerry Limited
    Inventors: Chen Ho Chin, Noun Choi, Stefano Faccin
  • Publication number: 20200137127
    Abstract: A method for initiating a Packet Switched emergency call using a user equipment (UE) is presented. The UE includes a plurality of protocol layers. The plurality of protocol layers including an IMS sublayer, a non-access stratum (NAS) layer and an access stratum (AS) layer. The method includes generating an ATTACH REQUEST using the UE. The ATTACH REQUEST has an attach type. The method includes retrieving the attach type of the ATTACH REQUEST using the NAS layer of the UE, and generating an RRC CONNECTION REQUEST. The RRC CONNECTION REQUEST includes an RRC establishment cause based upon the attach type of the attach request.
    Type: Application
    Filed: December 27, 2019
    Publication date: April 30, 2020
    Applicant: BlackBerry Limited
    Inventors: Chen Ho Chin, Richard C. Burbidge
  • Publication number: 20200068391
    Abstract: Systems and methods are provided for security systems and procedures. Certain embodiments herein are directed to privacy protection for a permanent subscriber identifier. Other embodiments are directed to support of extensible authentication protocol (EAP) authentication and authorization by 5G non-access stratum (NAS).
    Type: Application
    Filed: May 9, 2018
    Publication date: February 27, 2020
    Applicant: INTEL IP CORPORATION
    Inventors: Xiruo Liu, Farid Adrangi, Chen-Ho Chin, Abhijeet Kolekar, Ching-Yu Liao, Mohamed Amin Nassar, Ahmed Soliman, Alexandre Saso Stojanovski, Raimund Wloka
  • Patent number: 10542051
    Abstract: A method for initiating a Packet Switched emergency call using a user equipment (UE) is presented. The UE includes a plurality of protocol layers. The plurality of protocol layers including an IMS sublayer, a non-access stratum (NAS) layer and an access stratum (AS) layer. The method includes generating an ATTACH REQUEST using the UE. The ATTACH REQUEST has an attach type. The method includes retrieving the attach type of the ATTACH REQUEST using the NAS layer of the UE, and generating an RRC CONNECTION REQUEST. The RRC CONNECTION REQUEST includes an RRC establishment cause based upon the attach type of the attach request.
    Type: Grant
    Filed: October 4, 2017
    Date of Patent: January 21, 2020
    Assignee: BlackBerry Limited
    Inventors: Chen Ho Chin, Richard C. Burbidge
  • Publication number: 20200015076
    Abstract: Briefly, in accordance with one or more embodiments, an apparatus of a user equipment (UE), comprises one or more baseband processors to derive a dynamic scrambling key, and a memory to store the dynamic scrambling key and a temporary UE identifier (temporary UE ID) assigned to the UE. The one or more baseband processors monitor a paging request for a scrambled UE identifier (UE ID) to determine if the paging request is intended for the UE by unscrambling the scrambled UE ID with the dynamic scrambling key to produce the temporary UE ID. The paging request is intended for the UE if the temporary UE ID produced by unscrambling the scrambled UE ID matches the temporary UE ID stored in the memory. A new dynamic scrambling key may be derived each time the UE returns to a radio resource control idle (RRC_IDLE) state.
    Type: Application
    Filed: May 3, 2017
    Publication date: January 9, 2020
    Applicant: Intel IP Corporation
    Inventors: Sudeep M. Vamanan, Robert Zaus, Birgit Breining, Chen Ho Chin, Hyung-Nam Choi
  • Publication number: 20190313292
    Abstract: In an access device associated with a first network cell, a method for enabling user equipment (UE) to obtain a service unavailable through the first network cell includes receiving a request for the UE to access the service, and identifying, in a message to the UE, a plurality of second network cells providing the service.
    Type: Application
    Filed: June 24, 2019
    Publication date: October 10, 2019
    Applicant: BlackBerry Limited
    Inventors: Richard Charles BURBIDGE, Takashi SUZUKI, David Philip HOLE, Johanna Lisa DWYER, Venkata Ratnakar Rao Rayavarapu, Maiyuran Wijayanathan, Stephen McCann, Andrew Mark EARNSHAW, Chen Ho CHIN
  • Patent number: 10390189
    Abstract: User Equipment (UE) may skip the Access Class Barring (ACB) procedure for specific services, such as MMTEL voice, MMTEL video, and SMS. In one implementation, NAS layer of a UE may: receive, from an upper layer relative to the NAS layer, a request for a particular service type that is being originated by the UE; receive an indication, from a Radio Resource Control (RRC) layer of the UE, that access to a cell, associated with the UE, is barred; and bypass the indication that access to the cell is barred, when the particular service type matches a predetermined set of service types. The bypassing may include: requesting that the RRC layer establish an RRC connection for the service request, and notifying the RRC layer that the request for the RRC connection corresponds to the particular service type.
    Type: Grant
    Filed: August 28, 2017
    Date of Patent: August 20, 2019
    Assignee: Intel IP Corporation
    Inventors: Ana Lucia Pinheiro, Marta Martinez Tarradell, Robert Zaus, Jerome Parron, Hyung-Nam Choi, Richard Burbidge, Vivek G. Gupta, Chen-Ho Chin
  • Patent number: 10341910
    Abstract: A method performed by user equipment (UE) includes receiving a request to access a service unavailable through a first network cell associated with the UE and informing a second network cell that the UE is requesting to obtain the service unavailable through the first network cell. The request may be received from a user of the UE or may be a paging message.
    Type: Grant
    Filed: June 16, 2010
    Date of Patent: July 2, 2019
    Assignee: BlackBerry Limited
    Inventors: Richard Charles Burbidge, Takashi Suzuki, David Philip Hole, Johanna Lisa Dwyer, Venkata Ratnakar Rao Rayavarapu, Maiyuran Wijayanathan, Stephen McCann, Mark Earnshaw, Chen Ho Chin
  • Patent number: 10341903
    Abstract: In an access device associated with a first network cell, a method for enabling user equipment (UE) to obtain a service unavailable through the first network cell includes receiving a request for the UE to access the service, and identifying, in a message to the UE, a plurality of second network cells providing the service.
    Type: Grant
    Filed: May 15, 2017
    Date of Patent: July 2, 2019
    Assignee: BlackBerry Limited
    Inventors: Richard Charles Burbidge, Takashi Suzuki, David Philip Hole, Johanna Lisa Dwyer, Venkata Ratnakar Rao Rayavarapu, Maiyuran Wijayanathan, Stephen McCann, Andrew Mark Earnshaw, Chen Ho Chin
  • Publication number: 20190124717
    Abstract: A mobility management node in A core network receives a first Non Access Stratum (NAS) message via a second network element from a user equipment (UE), wherein the mobility management node stores a first identifying characteristic associated with at least one of a Local IP Access (LIPA) packet data network (PDN) connection or a selected IP traffic offload (SIPTO) PDN connection, the at least one of the LIPA PDN connection or the SIPTO PDN connection being via a first network element and for the UE. The mobility management node detects that the UE is connected to the second network element that is different from the first network element that has the first identifying characteristic, and in response to a condition that each PDN connection of the UE is a LIPA PDN connection or a SIPTO PDN connection, sends a second NAS message, the second NAS message including a cause code with a value that represents “No EPS Bearer Context Activated.
    Type: Application
    Filed: December 20, 2018
    Publication date: April 25, 2019
    Inventors: Noun Choi, Stefano Faccin, Chen Ho Chin
  • Patent number: 10212578
    Abstract: Technology for provisioning categories of applications on a user equipment (UE) is disclosed. A registration update message may be received at a wireless network element from the UE over non-access stratum (NAS) signaling. Application Specific Congestion Control for Data Communications (ACDC)/Application and Service Access Control (ASAC) information may be communicated from the wireless network element to the UE in response to receiving the registration update message. The ACDC/ASAC may be activated at a selected prioritization level, at the wireless network element, while a wireless network channel condition of a wireless network exceeds a capacity threshold, the ACDC/ASAC enabling only application categories to operate at the UE that are contained in the ACDC/ASAC information.
    Type: Grant
    Filed: March 21, 2014
    Date of Patent: February 19, 2019
    Assignee: INTEL IP CORPORATION
    Inventors: Eric Siow, Chen-Ho Chin, Puneet Jain, Muthaiah Venkatachalam
  • Patent number: 10187911
    Abstract: A method, system and device are provided for managing LIPA and/or SIPTO connection releases when UE moves out of residential/enterprise network coverage in case service continuity is not supported for the LIPA/SIPTO PDN connection(s). To address problems caused by not providing service continuity for LIPA/SIPTO PDN connections, the PDN connection/PDP context created in the HeNB/HNB by the MME/SGSN includes context information related to the UE indicating whether such connection is a LIPA PDN connection PDN connection or not. In addition, each UE may be configured to reconnect or not reconnect to the PDN corresponding to a certain APN or service, depending on how the PDN connection was disconnected by the network.
    Type: Grant
    Filed: May 22, 2017
    Date of Patent: January 22, 2019
    Assignee: BlackBerry Limited
    Inventors: Noun Choi, Stefano Faccin, Chen Ho Chin
  • Publication number: 20180324650
    Abstract: A method performed by user equipment (UE) includes receiving a request to access a service unavailable through a first network cell associated with the UE, and receiving a message from an access device associated with the first network cell, wherein the message identifies a plurality of second network cells providing the service.
    Type: Application
    Filed: July 16, 2018
    Publication date: November 8, 2018
    Applicant: BlackBerry Limited
    Inventors: Richard Charles BURBIDGE, Takashi SUZUKI, David Philip HOLE, Johanna Lisa DWYER, Venkata Ratnakar Rao Rayavarapu, Maiyuran WIJAYANATHAN, Stephen McCann, Mark EARNSHAW, Chen-Ho CHIN
  • Publication number: 20180310218
    Abstract: In some examples, a method in a core network communicatively connected with a first radio access network (RAN) comprising a first network element, and a second RAN comprising a second network element, includes receiving a first Non Access Stratum (NAS) message via the second network element from a User Equipment (UE), where the UE has, with the first network element, a selected IP traffic offload (SIPTO) PDN connection. The mobility management node detects that the UE is connected to the second network element that is different from the first network element that has a first identifying characteristic, where the detecting comprises determining that the first NAS message is received with a second identifying characteristic of the second network element different from the first identifying characteristic associated with the SIPTO PDN connection.
    Type: Application
    Filed: June 7, 2018
    Publication date: October 25, 2018
    Inventors: Chen Ho Chin, Noun Choi, Stefano Faccin
  • Patent number: 10111140
    Abstract: In an access device associated with a first network cell, a method for enabling user equipment (UE) to obtain a service unavailable through the first network cell includes receiving a request for the UE to access the service, and identifying, in a message to the UE, a plurality of second network cells providing the service.
    Type: Grant
    Filed: August 24, 2017
    Date of Patent: October 23, 2018
    Assignee: BlackBerry Limited
    Inventors: Richard Charles Burbidge, Takashi Suzuki, David Philip Hole, Johanna Lisa Dwyer, Venkata Ratnakar Rao Rayavarapu, Maiyuran Wijayanathan, Stephen McCann, Andrew Mark Earnshaw, Chen Ho Chin