Patents by Inventor Lifeng Han

Lifeng Han 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: 9077430
    Abstract: A method, a device and a system for transmitting relay data are provided, wherein, the method for transmitting the relay data includes: relay radio access bearer service between a relay node and a relay serving gateway is bore by a relay radio access bearer, so that the relay for the radio access bearer service of the terminal is completed. The method realizes the relay node relays data between a user equipment and a serving gateway.
    Type: Grant
    Filed: April 20, 2010
    Date of Patent: July 7, 2015
    Assignee: ZTE CORPORATION
    Inventors: Lifeng Han, Dapeng Li, Yada Huang
  • Patent number: 9019881
    Abstract: A method for waking up a Node B (NB) cell is provided. When a User Equipment (UE) in an idle state arrives in an area of a Home NB cell in which the UE ever resided, but does not search out signals of the Home cell, the UE reports Proximity Indication (PI) information to a network side through a specific Tracking Area Update (TAU) process; when determining that there is need to wake up the NB cell according to footprint information which is reported by the UE and obtained in the specific TAU process, the network side wakes up the NB cell. The method ensures that the UE in an idle state wakes up the sleeping Home NB cell (or macro cell) in time and gets service from the Home NB cell (or macro cell), thus a network coverage problem caused by cell sleeping for saving energy is avoided.
    Type: Grant
    Filed: September 1, 2010
    Date of Patent: April 28, 2015
    Assignee: ZTE Corporation
    Inventors: Jianmin Fang, Lifeng Han, Yin Gao
  • Publication number: 20150092579
    Abstract: A method, device and system for controlling assistant information of user equipment are disclosed. The field of wireless communication technology is related, and the problem is solved that the system efficiency is reduced, for UE reports the assistant information inappropriately. The method includes: the user equipment acquiring a control parameter of assistant information configured by a network side; and the user equipment reporting the assistant information of the user equipment to the network side according to the control parameter of assistant information. The technical scheme provided in the example of the present document is applied to a LTE system or a UMTS system, which implements that the network side controls the UE reporting the assistant information.
    Type: Application
    Filed: March 27, 2013
    Publication date: April 2, 2015
    Inventors: Dapeng Li, Lifeng Han, Zijiang Ma, He Huang, Jianmin Fang, Feng He
  • Publication number: 20150078360
    Abstract: The embodiment of the present invention discloses a network access method and apparatus. The method comprises: a UE receiving WLAN access auxiliary information sent by a 3GPP access network; according to the information, the UE measuring WLAN radio signal quality and performing an access judgment to obtain a judgment result; and the UE accessing to the WLAN according to the judgment result. The present invention can accelerate the access of the UE to the WLAN and enable the UE to acquire subsequent data joint transmission and/or services, thereby improving the user experience.
    Type: Application
    Filed: May 8, 2013
    Publication date: March 19, 2015
    Inventors: Xin Wang, Feng He, Jianxun Ai, Lifeng Han
  • Patent number: 8983392
    Abstract: The disclosure discloses a method for controlling Drive Test (DT) logged measurement, a DT system and User Equipment (UE). The method comprises the steps of: sending a logged measurement duration time to a UE by a network side or setting the logged measurement duration time by the UE itself; recording and reserving, by the UE, a measurement result obtained by DT; deleting the measurement result by the UE when the logged measurement duration time expires or the measurement result is reported during the logged measurement duration time. The disclosure makes the UE more efficient in reporting the measurement result and managing the storage space, thus saving memory space.
    Type: Grant
    Filed: January 6, 2011
    Date of Patent: March 17, 2015
    Assignee: ZTE Corporation
    Inventors: Longtao Ren, Lifeng Han, Yin Gao
  • Patent number: 8934908
    Abstract: The disclosure provides a method and user equipment for reporting a handover scenario judgment parameter and a base station for a handover scenario judgment; the method includes: an uplink message transmitted by the User Equipment (UE) includes an Evolved Cell Global Identifier (ECGI) so that a network side performs a handover scenario judgment based on the ECGI, wherein the uplink message is a message that includes Radio Link Failure (RLF)-related measurement information, or the uplink message is a message that includes an indication of RLF-related measurement information. Therefore, the disclosure enables an accurate handover scenario judgment, thus avoiding the problem in the related art that the error rate of a handover scenario judgment is high.
    Type: Grant
    Filed: June 28, 2011
    Date of Patent: January 13, 2015
    Assignee: ZTE Corporation
    Inventors: Lifeng Han, Feng He
  • Patent number: 8831586
    Abstract: The present invention provides a method and system for reporting neighbor cell information. The method includes: a network side sending a measurement configuration and reporting information of a drive test to user equipment; the user equipment performing the drive test, and reporting drive test results containing information of neighbor cells around the user equipment to the network side when a reporting triggering condition is satisfied (201). In the present invention, by using a Minimize drive test (MDT) measurement event in the drive test, the information of neighbor cells around the user equipment is discovered and reported to the network side for maintenance, and since the network side obtains the information of neighbor cells around the user equipment in time, the effectiveness of the user equipment performing the cell handover is guaranteed, thereby enhancing a network performance of a communication system.
    Type: Grant
    Filed: March 15, 2011
    Date of Patent: September 9, 2014
    Assignee: ZTE Corporation
    Inventors: Yin Gao, Lifeng Han
  • Patent number: 8829167
    Abstract: Foliamngiferosides having the general formula (I) are disclosed, wherein R is H or —OCH. The preparation method of the compounds, pharmaceutical compositions comprising the compounds as the active ingredients, the use of the compounds and the pharmaceutical compositions for inhibiting the activity of ?-glucosidase are also disclosed. The foliamangiferosides can be used in preparing drugs for treating diabetes.
    Type: Grant
    Filed: September 30, 2010
    Date of Patent: September 9, 2014
    Assignee: Tianjin University of Traditional Chinese Medicine
    Inventors: Tao Wang, Yi Zhang, Erwei Liu, Lifeng Han, Dandan Ge, Xiumei Gao
  • Patent number: 8817752
    Abstract: Methods and an apparatus for judging matching of inter-cell reselection parameters and handover parameters are disclosed. In some embodiments, a target base station counts the probability that cell handover of a terminal occurs subsequent to a radio resource control connection is established according to a handover request message or a relocation request message. The target base station judges whether the probability exceeds a threshold. If the probability exceeds a threshold, it is determined that the inter-cell reselection parameters and the handover parameters between a source base station and the target base station are not matched. Otherwise, it is determined that the inter-cell reselection parameters and the handover parameters are matched.
    Type: Grant
    Filed: April 22, 2010
    Date of Patent: August 26, 2014
    Assignee: ZTE Corporation
    Inventors: Lifeng Han, Feng He
  • Patent number: 8792891
    Abstract: The disclosure provides a method and system for identifying a terminal. The method comprises that: a source eNB that has received an RRC reestablishment message determines, according to a PCI of a cell where an RLF occurs in the massage, all target eNBs to which RLF information needs to be sent, and sends the RLF information to each determined target eNB; after receiving the RLF information, the target eNB determines the cell where the RLF occurs under the target eNB according to the PCI of the cell where the RLF occurs, and determines in each determined cell whether a C-RNTI of the terminal in the cell where the RLF occurs belongs to C-RNTIs existing in the cell; if the C-RNTI belongs to the C-RNTIs existing in the cell, then the terminal is determined to be a terminal of the cell, otherwise the terminal is determined not to be a terminal of the cell. The disclosure enables the terminal to be identified accurately and uniquely.
    Type: Grant
    Filed: February 5, 2010
    Date of Patent: July 29, 2014
    Assignee: ZTE Corporation
    Inventors: Lifeng Han, Feng He, Yin Gao
  • Patent number: 8660570
    Abstract: The present invention discloses a Physical Cell ID (PCI) allocation method and a base station. The PCI allocation method includes the following steps: a target base station obtains a usable PCI list sent by an Operations And Maintenance (OAM) function entity, and removes limited PCIs of the target cell from the usable PCI list to obtain a selectable PCI set (step S102); the target base station obtains the E-UTRA Absolute Radio Frequency Channel Number (EARFCN) information of neighbor cells of serving cells via an X2 interface message, and obtains a first reference PCI set in a predefined manner, cell EARFCN information in the first reference PCI set is different from that of the target cell of the target base station (step S014); the target base station forms a second reference PCI set based on the intersection of the usable PCI list and the first reference PCI set (step S106); if the selectable PCI set is empty, then a PCI is randomly selected from the second reference PCI set as the target PCI (step S108).
    Type: Grant
    Filed: August 7, 2009
    Date of Patent: February 25, 2014
    Assignee: ZTE Corporation
    Inventors: Lifeng Han, Yin Gao
  • Publication number: 20130288665
    Abstract: The disclosure claims a method and a device for determining a Radio Link Failure (RLF) reason, wherein a UE has an RLF in a first eNB where the UE is located, and successfully establishes a RRC with a second eNB. The method includes that: the UE sends RLF information to the first eNB, wherein the RLF information includes at least one of the following: the ambient signal quality information recorded by the UE when the RRC is established successfully, the location information of the UE when the RLF occurs, and the location information of the UE when the RRC is successfully established; the first eNB determines the RLF reason according to the RLF information. The disclosure solves the problem that the RLF reason cannot be judged accurately in the conventional art, and enables the network side to obtain more accurate and comprehensive information.
    Type: Application
    Filed: April 1, 2011
    Publication date: October 31, 2013
    Applicant: ZTE Corporation
    Inventors: Yin Gao, Lifeng Han
  • Publication number: 20130183977
    Abstract: The disclosure provides a method for processing handover failure, and user equipment (UE). The method comprises: UE failing in handing over from a first cell to a second cell; the UE failing in performing radio resource control (RRC) re-establishment in the first cell, the second cell or a third cell, and succeeding in performing RRC establishment in a fourth cell; a network element to which the user equipment in a connected state is connected sending a physical identifier of the second cell to a network element to which the first cell belongs. The disclosure can ensure that the network element to which the first cell belongs carries out accurate judgment of handover situations according to the physical identifier, which can ensure the optimization of handover parameters.
    Type: Application
    Filed: August 8, 2011
    Publication date: July 18, 2013
    Applicant: ZTE CORPORATION
    Inventors: Lifeng Han, Yin Gao
  • Publication number: 20130142110
    Abstract: A method for obtaining interface information of a neighbor Evolved NodeB (eNB)/Relay Node (RN) is provided by the present invention. A Donor Evolved NodeB (DeNB) can establish a corresponding relationship between an eNB identifier of the neighbor eNB/RN network element and the GU Group Id List of the neighbor eNB/RN network element according to X2 interface information, and send the corresponding relationship to the RN network element/neighbor eNB; the DeNB can also send a GU Group Id List and cell information of the neighbor eNB/RN network element to the RN network element/neighbor eNB which can establish the corresponding relationship between the GU Group Id List and the eNB identifier of the neighbor eNB/RN network element. A wireless relay system is also provided by the present invention.
    Type: Application
    Filed: April 27, 2011
    Publication date: June 6, 2013
    Applicant: ZTE CORPORATION
    Inventors: Dapeng Li, Lifeng Han, Zijiang Ma
  • Publication number: 20130128795
    Abstract: A method and a device for energy saving control in the home base station environment are provided to solve the problem of energy saving control in the home base station environment. In the present invention, a source base station sends an energy saving control request to a target home base station, wherein the energy saving control request comprises the information of the target base station, the information of the source base station, and the type of the energy saving control request. After receiving the energy saving control request, the target home base station performs an energy saving control processing operation, and sends a result of the energy saving control processing to the source base station through an energy saving control response. If the energy saving control processing fails, the energy saving control response further comprises a reason for the failure and/or a wait time.
    Type: Application
    Filed: August 4, 2011
    Publication date: May 23, 2013
    Applicant: ZTE CORPORATION
    Inventors: Yin Gao, Lifeng Han, Longtao Ren
  • Publication number: 20130114490
    Abstract: The disclosure provides a method and a system for waking up a Node B (NB) cell. When a User Equipment (UE) in an idle state arrives in an area of a Home NB cell in which the UE ever resided, but does not search out signals of the Home cell, or when the UE in an idle state finds that signals of a cell in which the UE currently resides get worse, and does not find other better cells, the UE reports Proximity Indication (PI) information to a network side through a specific Tracking Area Update (TAU) process; when determining that there is need to wake up the NB cell according to footprint information which is reported by the UE and obtained in the specific TAU process, the network side wakes up the NB cell.
    Type: Application
    Filed: September 1, 2010
    Publication date: May 9, 2013
    Applicant: ZTE Corporation
    Inventors: Jianmin Fang, Lifeng Han, Yin Gao
  • Publication number: 20130034058
    Abstract: A method for selecting and establishing a direct interface is provided. The method includes: when a target network element accesses a network element of a core network (CN) via a target gateway, a source side or a target side selects to establish a direct interface with the target gateway and/or the target network element. A system for selecting and establishing a direct interface is also provided. The system includes a selection and establishment unit for, when the target network element accesses the network element of the CN via the target gateway, selecting to establish the direct interface with the target gateway and/or the target network element by the source side or the target side. Use of the method and system in the present invention can realize establishment of an optional direct interface, so that a plurality of direct interface schemes can be selected.
    Type: Application
    Filed: March 14, 2011
    Publication date: February 7, 2013
    Applicant: ZTE CORPORATION
    Inventors: Jin Xi, Shengming Wang, Lifeng Han
  • Publication number: 20130017834
    Abstract: The disclosure provides a method and user equipment for reporting a handover scenario judgment parameter and a base station for a handover scenario judgment; the method includes: an uplink message transmitted by the User Equipment (UE) includes an Evolved Cell Global Identifier (ECGI) so that a network side performs a handover scenario judgment based on the ECGI, wherein the uplink message is a message that includes Radio Link Failure (RLF)-related measurement information, or the uplink message is a message that includes an indication of RLF-related measurement information. Therefore, the disclosure enables an accurate handover scenario judgment, thus avoiding the problem in the related art that the error rate of a handover scenario judgment is high.
    Type: Application
    Filed: June 28, 2011
    Publication date: January 17, 2013
    Applicant: ZTE CORPORATION
    Inventors: Lifeng Han, Feng He
  • Publication number: 20130012188
    Abstract: The present invention provides a method and system for reporting neighbor cell information. The method includes: a network side sending a measurement configuration and reporting information of a drive test to user equipment; the user equipment performing the drive test, and reporting drive test results containing information of neighbor cells around the user equipment to the network side when a reporting triggering condition is satisfied (201). In the present invention, by using a Minimize drive test (MDT) measurement event in the drive test, the information of neighbor cells around the user equipment is discovered and reported to the network side for maintenance, and since the network side obtains the information of neighbor cells around the user equipment in time, the effectiveness of the user equipment performing the cell handover is guaranteed, thereby enhancing a network performance of a communication system.
    Type: Application
    Filed: March 15, 2011
    Publication date: January 10, 2013
    Applicant: ZTE CORPORATION
    Inventors: Yin Gao, Lifeng Han
  • Publication number: 20130010624
    Abstract: The present invention discloses a method and system for measuring and reporting a multimedia broadcast multicast service, for solving the technical problem of how to measure and report a measurement result reflecting MBMS performance by the UE. In the present invention, the UE measures the MBMS according to a measurement configuration, and when a measurement reporting norm is met, the UE reports a measurement result or a measurement log of the measured MBMS measurement quantity to a network side. By the method, the operators can be assisted to timely understand the MBMS service performance of the current cell and can timely find the potential problems according to the measurement reporting result, and then resolve the problems as soon as possible; furthermore, the efficiency and cost problems caused by previous drive test can be effectively saved, and the service performance is improved.
    Type: Application
    Filed: March 16, 2011
    Publication date: January 10, 2013
    Applicant: ZTE CORPORATION
    Inventors: Feng He, Jianxun Ai, Yada Huang, Lifeng Han