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).

  • PROVISIONING OF APPLICATION CATEGORIES AT A USER EQUIPMENT DURING NETWORK CONGESTION
    Publication number: 20160014632
    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: Application
    Filed: March 21, 2014
    Publication date: January 14, 2016
    Inventors: ERIC SIOW, CHEN-HO CHIN, PUNEET JAIN, MUTHAIAH VENKATACHALAM
  • SYSTEM AND METHOD FOR DETERMINING ESTABLISHMENT CAUSES FOR EMERGENCY SESSIONS
    Publication number: 20150365813
    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: August 26, 2015
    Publication date: December 17, 2015
    Applicant: BlackBerry Limited
    Inventors: Chen Ho Chin, Richard C. Burbidge
  • Methods and apparatus to maintain call continuity
    Patent number: 9215684
    Abstract: Example methods and apparatus to maintain call continuity are disclosed. A disclosed example apparatus to control a user equipment (UE) mode includes the UE to initiate a tracking area updating (TAU) procedure in an evolved packet system (EPS) mobility management (EMM) connected (EMM_CONNECTED) mode, a state monitor to identify a lack of a voice service in response to the TAU procedure being successful, and a bearer monitor to identify a bearer context, the UE to stay in the EMM_CONNECTED mode until radio bearers associated with the bearer context are released.
    Type: Grant
    Filed: February 4, 2014
    Date of Patent: December 15, 2015
    Assignee: BlackBerry Limited
    Inventors: Stefano Faccin, Richard Charles Burbidge, Jan Hendrik Lucas Bakker, Chen Ho Chin
  • METHODS AND APPARATUS TO HANDLE BEARERS DURING CIRCUIT SWITCHED FALLBACK OPERATION
    Publication number: 20150282029
    Abstract: Methods and apparatus to provide packet switched service continuity during circuit switched fallback operation are described. One example method includes determining that a target system does not support packet switched handover; determining if non-3GPP access for packet switched service is available; and triggering handover to the non-3GPP access.
    Type: Application
    Filed: June 10, 2015
    Publication date: October 1, 2015
    Inventors: Stefano Faccin, Wei Wu, Chen Ho Chin
  • USE OF AN OMA MANAGEMENT OBJECT TO SUPPORT APPLICATION-SPECIFIC CONGESTION CONTROL IN MOBILE NETWORKS
    Publication number: 20150271708
    Abstract: Technology for using an open mobile alliance (OMA) management object (MO) for congestion control in mobile networks is described. A novel type of OMA MO for application specific access control (ASAC) can include internet protocol (IP) flow descriptions that can be used to characterize applications with fine granularity. Priorities can be assigned to IP flows based on the IP flow descriptions. A user equipment (UE) can receive such an OMA MO and also receive application-barring information regarding a congestion level in a mobile network with which an application at the UE wishes to connect. The UE can have a connectivity manager (CM) that determines whether to allow the application to establish a connection with the mobile network based on the priority level of the application's associated IP flow and the application-barring information.
    Type: Application
    Filed: December 24, 2014
    Publication date: September 24, 2015
    Inventors: Robert Zaus, Martin Kolde, Jerome Parron, Ana Lucia A. Pinheiro, Marta Martinez Tarradell, Hyung-Nam Choi, Vivek Gupta, Chen-Ho Chin, Richard C. Burbidge, Candy Yiu
  • System and method for determining establishment causes for emergency sessions
    Patent number: 9125182
    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 1, 2010
    Date of Patent: September 1, 2015
    Assignee: BlackBerry Limited
    Inventors: Chen Ho Chin, Richard Charles Burbidge
  • Methods and apparatus for voice domain operation
    Patent number: 9113403
    Abstract: Methods and apparatus for voice domain operation are described herein. One example method includes determining that an Evolved Universal Mobile Telecommunications System (UMTS) Terrestrial Radio Access (E-UTRA) network is not preferred for voice service based on receiving a response message to a NAS message via the E-UTRA network, wherein the response message to the Non-Access Stratum (NAS) message comprises an indication that no voice service is available, storing an identification of a first public land mobile network (PLMN), wherein the first PLMN is associated with the E-UTRA network that is not preferred for voice service, and avoiding selection of a second PLMN's E-UTRA network when an identification of the second PLMN matches the identification of the first PLMN.
    Type: Grant
    Filed: April 30, 2014
    Date of Patent: August 18, 2015
    Assignee: BlackBerry Limited
    Inventors: Stefano Faccin, Chen Ho Chin, Richard Charles Burbidge
  • Methods and mechanisms to enable priority calls in a cell through pre-emption of other calls
    Patent number: 9107128
    Abstract: A method is provided for managing a priority call in a serving cell. The method comprises, when a priority call is in progress in the serving cell, an access device in the serving cell determining an amount of resources available in the serving cell. The method further comprises when the amount of resources available in the serving cell is below a threshold, the access device causing at least one non-priority call in the serving cell to be handed over to a target cell.
    Type: Grant
    Filed: November 5, 2010
    Date of Patent: August 11, 2015
    Assignee: BlackBerry Limited
    Inventors: Chen-Ho Chin, Stefano Faccin, Muhammad Khaledul Islam, Mo-Han Fong
  • IMPLEMENTATIONS OF APPLICATION SPECIFIC ACCESS CLASS BARRING SKIP FUNCTIONALITY IN A WIRELESS NETWORK
    Publication number: 20150223146
    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: Application
    Filed: December 26, 2014
    Publication date: August 6, 2015
    Inventors: Ana Lucia Pinheiro, Marta Martinez Tarradell, Robert Zaus, Jerome Parron, Hyung-Nam Choi, Richard Burbidge, Vivek G. Gupta, Chen-Ho Chin
  • ENABLING UE ACCESS DOMAIN SELECTION FOR TERMINATED SPEECH/VIDEO CALLS
    Publication number: 20150215975
    Abstract: Methods, apparatuses, and systems are described for selecting an access domain for receiving a speech and/or video call at a mobile station of a mobile communications network in which calls are routed via a central service control common to a plurality of access domains. In one method, a terminating mobile station receives an INVITE and then, if the access network supports neither simultaneous circuit switched (CS) and packet switched (PS) connections nor voice over internet protocol (VoIP), the terminating mobile station transmits a message indicating that a CS bearer is required for a session.
    Type: Application
    Filed: April 6, 2015
    Publication date: July 30, 2015
    Inventors: Craig BISHOP, Chen-Ho CHIN
  • APPARATUS, SYSTEM AND METHOD OF PROVIDING OFFLOADABILITY INFORMATION TO A USER-EQUIPMENT (UE)
    Publication number: 20150195743
    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: Application
    Filed: September 21, 2014
    Publication date: July 9, 2015
    Inventors: Alexander Sirotkin, Alexandre S. Stojanovski, Vivek Gupta, Chen-Ho Chin
  • Method and apparatus for user equipment interaction with a network using interaction information
    Patent number: 9072069
    Abstract: A method for receiving information on Tracking Areas (TAs) by a User Equipment (UE) in a communication network is provided. The method includes transmitting to a Mobility Management Entity (MME), an ATTACH REQUEST message in a deregistered state; and receiving, from the MME, an ATTACH ACCEPT message including at least two different types of Tracking Area Identify (TAI) lists that identify TAs. The at least two different types of TAI lists are concatenated in the ATTACH ACCEPT message and each of the at least two different types of TAI lists is variable within a maximum size.
    Type: Grant
    Filed: November 5, 2013
    Date of Patent: June 30, 2015
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Chen Ho Chin, Craig Bishop
  • RFSP selective camping
    Patent number: 9008662
    Abstract: A user equipment (UE) is provided that includes one or more processors configured to perform one of an attach procedure, Routing Area Update (RAU), or Tracking Area Update (TAU), and then cause the UE to provide an indication to a network, wherein the indication indicates whether the UE has determined a voice solution in an Evolved Universal Mobile Telecommunications System Terrestrial Radio Access Network (E-UTRAN).
    Type: Grant
    Filed: February 8, 2011
    Date of Patent: April 14, 2015
    Assignee: BlackBerry Limited
    Inventors: Chen Ho Chin, Stefano M. Faccin
  • Enabling UE access domain selection for terminated speech/video calls
    Patent number: 9001177
    Abstract: There is discussed a method of selecting an access domain for receiving a speech and/or video call at a mobile station of a mobile communications network in which calls are routed via a central service control common to a plurality of access domains. The method comprises the central service control transmitting an invite to establish a call to the terminating mobile station; the mobile station deciding on an access domain for receiving the call taking into account the capabilities of the local access network, and transmitting the selected access domain to the central service control; and establishing the call in accordance with the selected access domain.
    Type: Grant
    Filed: June 4, 2013
    Date of Patent: April 7, 2015
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Craig Bishop, Chen-Ho Chin
  • RELEASING CONNECTIONS WITH LOCAL GW WHEN UE MOVES OUT OF RESIDENTIAL/ENTERPRISE NETWORK COVERAGE
    Publication number: 20150092665
    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: December 10, 2014
    Publication date: April 2, 2015
    Inventors: Noun Choi, Stefano Faccin, Chen Ho Chin
  • Residential/enterprise network connection management and CSFB scenarios
    Patent number: 8989142
    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: September 27, 2011
    Date of Patent: March 24, 2015
    Assignee: Blackberry Limited
    Inventors: Chen Ho Chin, Noun Choi, Stefano Faccin
  • METHOD FOR ACCESSING A SERVICE UNAVAILABLE THROUGH A NETWORK CELL
    Publication number: 20150055625
    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: September 17, 2014
    Publication date: February 26, 2015
    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
  • Releasing connections with local GW when UE moves out of residential/enterprise network coverage
    Patent number: 8937924
    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: September 27, 2011
    Date of Patent: January 20, 2015
    Assignee: Blackberry Limited
    Inventors: Noun Choi, Stefano Faccin, Chen Ho Chin
  • HANDLING SERVICES DURING DEVICE BACKOFF
    Publication number: 20150003228
    Abstract: An example method to handle services during device backoff involves maintaining a device backed off from a packet-switched domain. When the device is backed off from the packet-switched domain, a request is sent to attach the device to an access network in a circuit-switched domain. A packet-switched backoff status of the device is sent with the request. The packet-switched backoff status indicates that the device is backed off from the packet-switched domain.
    Type: Application
    Filed: September 19, 2014
    Publication date: January 1, 2015
    Inventors: Noun Choi, Stefano Faccin, Chen-Ho Chin
  • Voice service in evolved packet system
    Patent number: 8879503
    Abstract: Methods and apparatus to manage voice service in evolved packet systems are disclosed. An example method in a User Equipment (UE) includes receiving a Non Access Stratum (NAS) protocol response message with a first indicator, the first indicator provided by lower layers of the UE to upper layers of the UE, responsive to the first indicator, initiating an IMS registration if the UE is not already registered with the IMS, and responsive to the UE having registered with the IP Multimedia (IM) Core Network (CN) Subsystem (IMS), determining availability of voice services over the IP Multimedia (IM) Core Network (CN) Subsystem (IMS).
    Type: Grant
    Filed: September 26, 2011
    Date of Patent: November 4, 2014
    Assignee: BlackBerry Limited
    Inventors: Johanna Lisa Dwyer, Richard Charles Burbidge, Stefano Faccin, Chen Ho Chin