Patents by Inventor Yixue Lei

Yixue Lei 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: 8885504
    Abstract: The embodiment of the disclosure discloses a method, apparatus and system for bandwidth aggregation of a MiAN. The method is applied in an aggregation system. The aggregation system comprises a master MiAN and one or more slave MiANs, the master MiAN and the one or more slave MiANs are connected to a WAN via WAN links respectively corresponding to the master MiAN and the one or more slave MiANs, the master MiAN establishes communication link with the one or more slave MiANs via a proximity interface.
    Type: Grant
    Filed: April 27, 2012
    Date of Patent: November 11, 2014
    Assignee: NTT DoCoMo, Inc.
    Inventors: Xin Xia, Qun Zhao, Yixue Lei, Yongsheng Zhang
  • Patent number: 8548476
    Abstract: Disclosed is a method of managing an X2 interface, a handover method, an interference coordination method and an apparatus for LTE and LTE-Advanced system. X2 interface management includes: finding by a first eNB, a new neighboring cell, i.e., a second cell corresponding to a second HeNB; determining by the first eNB, an access mode of the second cell; and establishing a first X2 interface between the first eNB and the second HeNB when the access mode of the second cell is an open mode or a hybrid mode. The X2 interface may be managed dynamically and the mode for establishing the X2 interface, such as direct X2 interface or gateway-proxied X2interface, may be selected. The expansible problem and system overhead due to the X2interface in the LTE and LTE-Advanced system may be reduced effectively to better support handover and interference coordination.
    Type: Grant
    Filed: October 18, 2011
    Date of Patent: October 1, 2013
    Assignee: NTT DoCoMo, Inc.
    Inventors: Yixue Lei, Yongsheng Zhang
  • Patent number: 8340705
    Abstract: Methods of camping on a hybrid cell and checking access priority and devices therefor are provided. The service of a CSG user is preferably guaranteed by adjusting a UE's camping right and a passing probability of an access priority checking according to the user's contracted characteristic and limit access information of a hybrid cell Node B. At the same time, the initial access delay of a non-CSG user is reduced, the initial access efficiency of the non-CSG user is improved, and the network resource and the UE's power are saved.
    Type: Grant
    Filed: August 13, 2010
    Date of Patent: December 25, 2012
    Assignee: NTT DoCoMo, Inc.
    Inventors: Liu Liu, Xiaoming She, Lan Chen, Yixue Lei, Mikio Iwamura
  • Publication number: 20120307658
    Abstract: The embodiment of the disclosure discloses a method, apparatus and system for bandwidth aggregation of a MiAN. The method is applied in an aggregation system. The aggregation system comprises a master MiAN and one or more slave MiANs, the master MiAN and the one or more slave MiANs are connected to a WAN via WAN links respectively corresponding to the master MiAN and the one or more slave MiANs, the master MiAN establishes communication link with the one or more slave MiANs via a proximity interface.
    Type: Application
    Filed: April 27, 2012
    Publication date: December 6, 2012
    Applicant: NTT DoCoMo, Inc
    Inventors: Xin Xia, Qun Zhao, Yixue Lei, Yongsheng Zhang
  • Publication number: 20120100860
    Abstract: Disclosed is a method of managing an X2 interface, a handover method, an interference coordination method and an apparatus for LTE and LTE-Advanced system. X2 interface management includes: finding by a first eNB, a new neighboring cell, i.e., a second cell corresponding to a second HeNB; determining by the first eNB, an access mode of the second cell; and establishing a first X2 interface between the first eNB and the second HeNB when the access mode of the second cell is an open mode or a hybrid mode. The X2 interface may be managed dynamically and the mode for establishing the X2 interface, such as direct X2 interface or gateway-proxied X2 interface, may be selected. The expansible problem and system overhead due to the X2 interface in the LTE and LTE-Advanced system may be reduced effectively to better support handover and interference coordination.
    Type: Application
    Filed: October 18, 2011
    Publication date: April 26, 2012
    Applicant: NTT DoCoMo, Inc.
    Inventors: Yixue Lei, Yongsheng Zhang
  • Publication number: 20110039594
    Abstract: Methods of camping on a hybrid cell and checking access priority and devices therefor are provided. The service of a CSG user is preferably guaranteed by adjusting a UE's camping right and a passing probability of an access priority checking according to the user's contracted characteristic and limit access information of a hybrid cell Node B. At the same time, the initial access delay of a non-CSG user is reduced, the initial access efficiency of the non-CSG user is improved, and the network resource and the UE's power are saved.
    Type: Application
    Filed: August 13, 2010
    Publication date: February 17, 2011
    Inventors: Liu LIU, Xiaoming She, Lan Chen, Yixue Lei, Mikio Iwamura