Patents by Inventor Chunbo WANG

Chunbo WANG 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).

  • Patent number: 9497667
    Abstract: A network node, and a method at the network node, for handing over a mobile terminal between a first RAT and a second RAT in a wireless communications network. In some embodiments, the method comprises establishing a PDN connection with the mobile terminal via the first RAT, receiving a request for handover of the mobile terminal from the first RAT to the second RAT, performing the requested handover, maintaining PDN connection context for the PDN connection established via the first RAT for a time period, and releasing the PDN connection context at expiry of the time period.
    Type: Grant
    Filed: September 11, 2014
    Date of Patent: November 15, 2016
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Chunbo Wang, Daniel Nilsson, Lars-Bertil Olsson, Stefan Rommer
  • Publication number: 20160295385
    Abstract: One embodiment of the present disclosure relates to a method implemented by a first gateway node for processing an emergency call from an untrusted non-3GPP access network. The method comprises: receiving an emergency call request initiated from a terminal device over an untrusted non-3GPP based access network; detecting an event of the emergency call depending upon the emergency network access identifier included in the request message; selecting for the terminal device an emergency access point name that identifies an external network providing an emergency call service; and establishing for the terminal device an emergency call session with a second gateway node interfacing with the external network which is identified by the selected emergency access point name. According to an aspect of the present disclosure, there are provided corresponding methods and devices.
    Type: Application
    Filed: March 31, 2015
    Publication date: October 6, 2016
    Applicant: Telefonaktiebolaget L M Ericsson (PUBL)
    Inventors: Chunbo Wang, Amy Li, Lu Wang
  • Publication number: 20160242225
    Abstract: In one aspect, a method for a packet gateway node (PGW) is disclosed. The PGW being adapted for (a) communicating with at least a serving gateway node, SGW, (b) receiving and forwarding downlink data packets to a user entity, UE, and (c) communicating with a mobility management entity, MME. In one embodiment, the method comprises: the PGW, when receiving a downlink user plane data packet destined for the UE on a Packet Data Network, PDN, connection associated with a restarted SGW, determining if the PDN connection has not yet been relocated to a new SGW, and, if so, selecting at least one SGW from a set of SGWs including the restarted SGW or another SGW and transmitting a control plane signal to at least one of the selected SGWs, the control plane signal identifying at least the UE.
    Type: Application
    Filed: April 22, 2016
    Publication date: August 18, 2016
    Applicant: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Chunbo WANG, Yong Yang
  • Patent number: 9326312
    Abstract: In one aspect, a method for a packet gateway node (PGW) is disclosed. The PGW being adapted for (a) communicating with at least a serving gateway node, SOW, (b) receiving and forwarding downlink data packets to a user entity, UE, and (c) communicating with a mobility management entity, MME. In one embodiment, the method comprises: the PGW, when receiving a downlink user plane data packet destined for the UE on a Packet Data Network, PDN, connection associated with a restarted SGW, determining if the PDN connection has not yet been relocated to a new SGW, and, if so, selecting at least one SGW from a set of SGWs including the restarted SGW or another SGW and transmitting a control plane signal to at least one of the selected SGWs, the control plane signal identifying at least the UE.
    Type: Grant
    Filed: December 30, 2014
    Date of Patent: April 26, 2016
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Chunbo Wang, Yong Yang
  • Publication number: 20160080981
    Abstract: The present invention relates to a network node and a method at the network node of handing over a mobile terminal between a first RAT and a second RAT in a wireless communications network. The invention further relates to a computer program performing the method according to the present invention, and a computer program product comprising computer readable medium having the computer program embodied therein. A method at a network node of a packet core network of performing handover of a mobile terminal between a first Radio Access Technology (RAT), and a second RAT in a wireless communications network is provided in an embodiment of the present invention. The method comprises receiving a request for handover of the mobile terminal to the second RAT, establishing a PDN connection with the mobile terminal via the first RAT, and performing handover of the mobile terminal to the second RAT.
    Type: Application
    Filed: September 11, 2014
    Publication date: March 17, 2016
    Applicant: Telefonaktiebolaget L M Ericsson (publ)
    Inventors: Chunbo Wang, Daniel Nilsson, Lars-Bertil Olsson, Stefan Rommer
  • Patent number: 9282183
    Abstract: A network node for a telecommunication network is provided. The network node includes a receiving unit adapted to receive a monitoring control message. The monitoring control message includes an identifier relating to a subscriber whose communication is to be monitored. A processing unit is adapted to determine one or more filter parameters for filtering communication relating to the subscriber based on the received monitoring control message. The network node also includes a sending unit adapted to send a filter parameter message indicative of the determined one or more filter parameters to a monitoring node separate from the network node for filtering of the communication relating to the subscriber in accordance with the one or more filter parameters.
    Type: Grant
    Filed: April 27, 2012
    Date of Patent: March 8, 2016
    Assignee: Telefonaktiebolaget L M Ericsson (publ)
    Inventors: Chunbo Wang, Volker Kleinfeld, Martin Blumbach
  • Publication number: 20150382251
    Abstract: A technique is provided for synchronizing a first call state of a network component and a second call state of a mobile device. The mobile device is connectable to a network via a first Radio Access Technology (RAT) and a second RAT. The network forwards towards a callee an invitation for a call originating via the first RAT from the mobile device. The network sends a first message corresponding to a callee response towards the mobile device. The network component triggers a transfer of the call session of the mobile device from the first RAT to the second RAT. The first call state is set by the response of the callee. Information indicative of the second call state is received from the mobile device, and a second message for changing the second call state by the response is provided to the mobile device when inconsistent first and second call states.
    Type: Application
    Filed: February 12, 2013
    Publication date: December 31, 2015
    Inventors: Chunbo WANG, Jan HOLM, Karl-Peter RANKE, Oliver SPEKS
  • Publication number: 20150382250
    Abstract: A technique for triggering a change of a call state of a mobile device is presented. A network forwards towards a callee an invitation for a call originating via a first Radio Access Technology (RAT) from the mobile device, and forwards a response of the callee via the first RAT towards the mobile device. The response indicates a change of the call state from a first state to a second state. A first network component changes via a second RAT the call state of the mobile device when receiving information indicative of the first state followed by receiving a message indicative of the second state. A second network component receives from the first network component an invitation for a transfer of the call of mobile device from the first RAT to the second RAT.
    Type: Application
    Filed: February 12, 2013
    Publication date: December 31, 2015
    Inventors: Oliver SPEKS, Jan HOLM, Karl-Peter RANKE, Chunbo WANG
  • Publication number: 20150140996
    Abstract: A network node for a telecommunication network is provided. The network node includes a receiving unit adapted to receive a monitoring control message. The monitoring control message includes an identifier relating to a subscriber whose communication is to be monitored. A processing unit is adapted to determine one or more filter parameters for filtering communication relating to the subscriber based on the received monitoring control message. The network node also includes a sending unit adapted to send a filter parameter message indicative of the determined one or more filter parameters to a monitoring node separate from the network node for filtering of the communication relating to the subscriber in accordance with the one or more filter parameters.
    Type: Application
    Filed: April 27, 2012
    Publication date: May 21, 2015
    Applicant: Telefonaktiebolaget L M Ericsson (publ)
    Inventors: Chunbo Wang, Volker Kleinfeld, Martin Blumbach
  • Publication number: 20150109898
    Abstract: In one aspect, a method for a packet gateway node (PGW) is disclosed. The PGW being adapted for (a) communicating with at least a serving gateway node, SOW, (b) receiving and forwarding downlink data packets to a user entity, UE, and (c) communicating with a mobility management entity, MME. In one embodiment, the method comprises: the PGW, when receiving a downlink user plane data packet destined for the UE on a Packet Data Network, PDN, connection associated with a restarted SGW, determining if the PDN connection has not yet been relocated to a new SGW, and, if so, selecting at least one SGW from a set of SGWs including the restarted SGW or another SGW and transmitting a control plane signal to at least one of the selected SGWs, the control plane signal identifying at least the UE.
    Type: Application
    Filed: December 30, 2014
    Publication date: April 23, 2015
    Applicant: Telefonaktiebolaget L M Ericsson (publ)
    Inventors: Chunbo WANG, Yong Yang
  • Publication number: 20150017980
    Abstract: A method for a fallback core network node within core network nodes for a first mobile terminated call towards a mobile subscriber initially assigned to a failing ore network node (failing CNN). The method includes receiving data associated to International Mobile Subscriber Identity and Location Area Identifier (LAI) of a mobile subscriber handled in the failing CNN. The method includes receiving a service request from a home location register (HLR), whereby the service request indicates that the fallback CNN is acting as a fallback CNN for the failing CNN, and sending a response to the service request towards the HLR comprising the roaming Number assigned by the fallback CNN. The method includes initiating a paging request towards the radio network comprising said received LAI of said mobile subscriber, and sending a Service Request towards the HLR comprising the Mobile Station Integrated Services Digital Network Number of the mobile subscriber.
    Type: Application
    Filed: January 9, 2012
    Publication date: January 15, 2015
    Applicant: Telefonaktiebolaget L M Ericsson (publ)
    Inventors: Haibin Chu, Yingjiao He, Linhai Jiang, Chunbo Wang, Jacky Wu, Mingqiu Xu, Henry Zheng
  • Patent number: 8929335
    Abstract: In one aspect, a method for a packet gateway node (PGW) is disclosed. The PGW being adapted for (a) communicating with at least a serving gateway node, SGW, (b) receiving and forwarding downlink data packets to a user entity, UE, and (c) communicating with a mobility management entity, MME. In one embodiment, the method comprises: the PGW, when receiving a downlink user plane data packet destined for the UE on a Packet Data Network, PDN, connection associated with a restarted SGW, determining if the PDN connection has not yet been relocated to a new SGW, and, if so, selecting at least one SGW from a set of SGWs including the restarted SGW or another SGW and transmitting a control plane signal to at least one of the selected SGWs, the control plane signal identifying at least the UE.
    Type: Grant
    Filed: April 27, 2012
    Date of Patent: January 6, 2015
    Assignee: Telefonaktiebolaget L M Ericsson (Publ)
    Inventors: Chunbo Wang, Yong Yang
  • Publication number: 20130196640
    Abstract: According to the invention, it provides a Network Element (NE) acting as an originating NE for End-to-End (E2E) Circuit Service (CS) call tracing functionality, the NE comprising: a receiver configured to receive a trace activation message which contains trace control and configuration parameters, wherein the trace control and configuration parameters include at least a Trace Reference, a start triggering event, a stop triggering event, an E2E call tracing option and an address of a Trace Collection Entity; a storage device configured to store the trace control and configuration parameters received by the receiver; a trace data reporter configured to start a trace session with the Trace Reference, to start a Trace Recording Session with a Trace Recording Session Reference when the start triggering event occurs, and to record and output trace data according to the stored trace control and configuration parameters; and a sender configured to detect that the E2E call tracing option is included in the trace activ
    Type: Application
    Filed: September 19, 2010
    Publication date: August 1, 2013
    Applicant: TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)
    Inventors: Chunbo Wang, Haibin Chu, Zhenghao Dong, Klaus Turina, Mingqiu Xu
  • Publication number: 20120275430
    Abstract: In one aspect, a method for a packet gateway node (PGW) is disclosed. The PGW being adapted for (a) communicating with at least a serving gateway node, SGW, (b) receiving and forwarding downlink data packets to a user entity, UE, and (c) communicating with a mobility management entity, MME. In one embodiment, the method comprises: the PGW, when receiving a downlink user plane data packet destined for the UE on a Packet Data Network, PDN, connection associated with a restarted SGW, determining if the PDN connection has not yet been relocated to a new SGW, and, if so, selecting at least one SGW from a set of SGWs including the restarted SGW or another SGW and transmitting a control plane signal to at least one of the selected SGWs, the control plane signal identifying at least the UE.
    Type: Application
    Filed: April 27, 2012
    Publication date: November 1, 2012
    Applicant: Telefonaktiebolaget L M Ericsson (publ)
    Inventors: Chunbo WANG, Yong YANG