Patents by Inventor Noun Choi

Noun Choi 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: 20230422132
    Abstract: In some examples, a user equipment (UE) obtains a connectivity in a first cell, the connectivity comprising a first type of connection that 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: June 19, 2023
    Publication date: December 28, 2023
    Inventors: Chen Ho Chin, Noun Choi, Stefano Faccin
  • Patent number: 11729695
    Abstract: In some examples, a user equipment (UE) obtains a connectivity in a first cell, the connectivity comprising a first type of connection that 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: Grant
    Filed: May 2, 2022
    Date of Patent: August 15, 2023
    Assignee: Malikie Innovations Limited
    Inventors: Chen Ho Chin, Noun Choi, Stefano Faccin
  • Publication number: 20220272599
    Abstract: In some examples, a user equipment (UE) obtains a connectivity in a first cell, the connectivity comprising a first type of connection that 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 2, 2022
    Publication date: August 25, 2022
    Inventors: Chen Ho Chin, Noun Choi, Stefano Faccin
  • Patent number: 11350334
    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: Grant
    Filed: May 13, 2020
    Date of Patent: May 31, 2022
    Assignee: BlackBerry Limited
    Inventors: Chen Ho Chin, Noun Choi, Stefano Faccin
  • 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: 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
  • Patent number: 10645680
    Abstract: A method for use in a first user equipment (UE) includes receiving, from a base station, control information and a resource assignment for uplink transmission; and transmitting, based on the control information, a discovery signal on the assigned resource for uplink transmission, the discovery signal including a first temporary UE identifier (ID) assigned to the first UE, wherein the first temporary UE ID is used to identify the first UE for device-to-device communication.
    Type: Grant
    Filed: January 6, 2017
    Date of Patent: May 5, 2020
    Assignee: BlackBerry Limited
    Inventors: Zhijun Cai, Joon Beom Kim, Noun Choi, Changhoi Koo
  • Patent number: 10560882
    Abstract: A method and apparatus for mobility management, load management, sharing management and configuration update and setup in a mobile network having a first radio access technology node and a second radio access technology node, the first radio access technology node and the second radio access technology node communicating over a backhaul interface. In one aspect the method detects, at the first radio access technology node, that a handover for a user equipment to a new node is required; provides, from the first radio access technology node, handover information to the second radio access technology node over the backhaul interface; and performs the handover of the user equipment from the first radio access technology node to the new node.
    Type: Grant
    Filed: February 28, 2013
    Date of Patent: February 11, 2020
    Assignee: BlackBerry Limited
    Inventors: Sophie Vrzic, Noun Choi
  • 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: 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: 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: 10098049
    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: February 26, 2016
    Date of Patent: October 9, 2018
    Assignee: BlackBerry Limited
    Inventors: Chen Ho Chin, Noun Choi, Stefano Faccin
  • Patent number: 9781199
    Abstract: A method, system and apparatus are provided for performing peer-to-peer (P2P) data sharing operations between user equipment (UE) devices in a wireless-enabled communications environment. A first client node comprises content data and operates in a server peer mode to provide content data. A second client node submits a request to a P2P application server (P2P AS) for the content data. In response, the P2P AS provides the address of the first client node to the second client node. The second client node then uses the provided address to submit a request to the first client node to provide the content data. The first client node accepts the request and then provides the content data to the second client node.
    Type: Grant
    Filed: December 28, 2015
    Date of Patent: October 3, 2017
    Assignee: BlackBerry Limited
    Inventors: Noun Choi, Wei Wu, Khiem Le
  • Publication number: 20170257905
    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: Application
    Filed: May 22, 2017
    Publication date: September 7, 2017
    Inventors: Noun Choi, Stefano Faccin, Chen Ho Chin
  • Patent number: 9713196
    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: December 10, 2014
    Date of Patent: July 18, 2017
    Assignee: BlackBerry Limited
    Inventors: Noun Choi, Stefano Faccin, Chen Ho Chin
  • Publication number: 20170118749
    Abstract: A method for use in a first user equipment (UE) includes receiving, from a base station, control information and a resource assignment for uplink transmission; and transmitting, based on the control information, a discovery signal on the assigned resource for uplink transmission, the discovery signal including a first temporary UE identifier (ID) assigned to the first UE, wherein the first temporary UE ID is used to identify the first UE for device-to-device communication.
    Type: Application
    Filed: January 6, 2017
    Publication date: April 27, 2017
    Applicant: BlackBerry Limited
    Inventors: Zhijun CAI, Joon Beom KIM, Noun CHOI, Changhoi KOO
  • Patent number: 9591430
    Abstract: A temporary identifier is assigned to a discoverable user equipment (UE) in an assignment, an expiration value is assigned to the assignment, and the temporary identifier and the expiration value are associated to a long-term identifier of the discoverable UE. The temporary identifier and an indication of the expiration value are provided to the discoverable UE. The temporary identifier and an indication of the expiration value are provided to a discovering UE responsive to receipt of an inquiry including the long-term identifier of the discoverable UE The discoverable UE broadcasts the temporary identifier. If the broadcast is heard by the discovering UE, the discovering UE may identify that the broadcast is from the discoverable UE, based on the association of the long-term identifier to the temporary identifier.
    Type: Grant
    Filed: September 16, 2013
    Date of Patent: March 7, 2017
    Assignee: BlackBerry Limited
    Inventors: Changhoi Koo, Noun Choi, Joon Beom Kim
  • Patent number: 9549394
    Abstract: A method for use in a first user equipment (UE) includes receiving, from a base station, control information and a resource assignment for uplink transmission; and transmitting, based on the control information, a discovery signal on the assigned resource for uplink transmission, the discovery signal including a first temporary UE identifier (ID) assigned to the first UE, wherein the first temporary UE ID is used to identify the first UE for device-to-device communication.
    Type: Grant
    Filed: February 28, 2014
    Date of Patent: January 17, 2017
    Assignee: BlackBerry Limited
    Inventors: Joon Beom Kim, Noun Choi, Changhoi Koo, Zhijun Cai
  • Patent number: 9503223
    Abstract: A sender device is able to send packets over a network destined to a receiver device, and the sender device receives response information that is responsive to the packets. A behavior of the sender device with respect to data transmission on plural subflows of a connection is controlled based on the response information.
    Type: Grant
    Filed: March 4, 2011
    Date of Patent: November 22, 2016
    Assignee: BlackBerry Limited
    Inventors: Wei Wu, Khiem Le, Noun Choi