Patents by Inventor Jimin Liu

Jimin Liu 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: 9215658
    Abstract: The present invention provides a method and a device for adjusting the sleep mode of a mobile station in order to solve the problem in current multi-hop relay systems of long time delays in data transmission caused when data packets have to wait for the next listening window to reach the mobile station because of packet errors. Wherein, a relay apparatus judges whether the previous hop network apparatus needs to retransmit data packets to the mobile station; when the previous hop network apparatus needs to retransmit data packets to the mobile station, the relay apparatus transmits to the mobile station the adjustment related information for adjusting the sleep mode of the mobile station. The mobile station adjusts the sleep mode according to the adjustment related information. Preferably, the adjustment related information comprises indicating information for indicating that the mobile station is in triggered listening status within predetermined time interval.
    Type: Grant
    Filed: January 6, 2010
    Date of Patent: December 15, 2015
    Assignee: Alcatel Lucent
    Inventors: Wu Zheng, Jimin Liu, Gang Shen, Zhaojun Xu, Xiaobing Leng
  • Patent number: 9037077
    Abstract: A relay method and device, wherein the control signal and the data signal which are in the same subframe are directly sent to a lower level device respectively by an upper level device and a relay function device. In one example, the relay function device transmits data signal using subscriber special reference signal to make the lower level device estimate an access channel correctly; in another example, the relay function device carries out precoding of the data signal correlative with the access channel so as to cancel the influence of the access channel, thereby make the lower level device receive data signal correctly. Retransmission control signaling is sent to the lower level device in each subframe by the upper level device to ensure the fixed sequential relationship of feedback retransmission.
    Type: Grant
    Filed: April 21, 2009
    Date of Patent: May 19, 2015
    Assignee: Alcatel Lucent
    Inventors: Gang Shen, Wu Zheng, Dongyao Wang, Jimin Liu, Wei Wang, Feng Han, Qi Jiang
  • Patent number: 8953508
    Abstract: The invention provides a temporary mobile station identity TMSI allocation method, comprising steps of: notifying a mobility management entity MME device of a corresponding mobility attribute based on a type of a Machine Type Communication MTC application, wherein the mobility attribute indicates whether a mobility of the MTC application is high or low; determining, by the MME device, a mobility layer associated with the MTC application according to the mobility attribute, and then allocating a TMSI from an available address space to a MTC device applying the MTC application based on a predetermined criterion, according to the determined mobility layer. The present invention further provides corresponding MTC server, MME device, network attachment method and location area update method.
    Type: Grant
    Filed: June 24, 2011
    Date of Patent: February 10, 2015
    Assignee: Alcatel Lucent
    Inventors: Wu Zheng, Jimin Liu, Qun Zhao, Feng Han, Kaibin Zhang
  • Patent number: 8953538
    Abstract: The present invention provides a network access method and system for Machine Type Communications (MTC), wherein the method comprises the following steps: an MTC device sends a preamble to a base station; the base station sends a Random Access Response (RAR) to the MTC device; if the RAR does not contain a temporary access resource assignment indication, the MTC device sends a Layer 2/Layer 3 message to the base station; otherwise, the MTC device re-attempts to perform network access; the base station sends a contention resolution message to the MTC device; if the contention resolution message contains a self-identification contained in the Layer 2/Layer 3 message sent by the MTC device, the network access is completed; if the contention resolution message contains the temporary access resource assignment indication, the MTC device re-attempts to perform the network access; otherwise, the MTC device attempts to perform the network access using the originally used access resource again.
    Type: Grant
    Filed: February 12, 2010
    Date of Patent: February 10, 2015
    Assignee: Alcatel Lucent
    Inventors: Qun Zhao, Wu Zheng, Jimin Liu
  • Patent number: 8929272
    Abstract: The present invention is directed to provide a relay method in a wireless access system, including comprising the following steps: in downlink direction, receiving downlink data from a base station, wherein the downlink data include control information for relay operation; constructing downlink data to be retransmitted; retransmitting the constructed downlink data to wireless communication terminals according to a profile specified by the control information; and, in uplink direction, receiving uplink data from the wireless communication terminals according to a profile specified by the control information; recovering the uplink data of the wireless communication terminals; and retransmitting the uplink data to the base station according to the profile specified by the control information. The present invention further provides the corresponding base station device, relay device and wireless relay system.
    Type: Grant
    Filed: April 27, 2007
    Date of Patent: January 6, 2015
    Assignee: Alcatel Lucent
    Inventors: Wei Zou, Gang Shen, Jiang Qi, Jimin Liu
  • Patent number: 8861326
    Abstract: Disclosed are method and apparatus for transmitting/receiving audio/video content data in wireless access networks. The method comprises the steps of: encoding the audio/video content data into a basic stream having a first level of quality and an advanced stream, combination of the basic stream and the advanced stream has a second level of quality higher than the first level of quality; and transmitting the basic stream and the advanced stream with a first power and a second power lower than the first power on antennas, respectively. With the method and apparatus of the invention, the low SINR users are able to maintain the low data rate receiving the basic stream and the high SINR user can receive both the basic stream and advanced stream from two logical channels.
    Type: Grant
    Filed: November 1, 2007
    Date of Patent: October 14, 2014
    Assignee: Alcatel Lucent
    Inventors: Wu Zheng, Jimin Liu, Yang Song
  • Patent number: 8750585
    Abstract: A method for segmenting an object of interest (which may be a liver object) in an input image is disclosed. The method comprises the steps of: (a) segmenting the points in a region of interest in the input image into a first and second group of points using predetermined intensity threshold values; (b) identifying a first set of small connected components formed by points in the first group of points and transferring the points in the first set of small connected components to the second group of points; (c) identifying a second set of small connected components formed by points in the second group of points and transferring the points in the second set of small connected components to the first group of points; and (d) forming the segmented object of interest using the first group of points.
    Type: Grant
    Filed: October 13, 2010
    Date of Patent: June 10, 2014
    Assignee: Agency for Science, Technology and Research
    Inventor: Jimin Liu
  • Patent number: 8687917
    Abstract: A method (100) and an apparatus (200) are disclosed for registering an input image and an atlas. The atlas is warped (130) using non-rigid registration. In particular, boundary displacements of structures in the atlas are calculated (132) which register those structures with equivalent structures in the input image. The boundaries of structures in the atlas are then warped (133) according to their respective boundary displacements using topology preserving propagation of boundary points of the structures.
    Type: Grant
    Filed: May 2, 2006
    Date of Patent: April 1, 2014
    Assignee: Agency for Science, Technology and Research
    Inventors: Jimin Liu, Su Huang, Wieslaw Lucjan Nowinski
  • Patent number: 8682373
    Abstract: The present invention proposes new method(s) and apparatus(es) used for request and allocation of uplink transmission resource in wireless access network, which enables the mobile terminal to use non-contention resources closely spaced on time domain to trigger or adjust reallocation of uplink resource, so that quick response of the base station to the resource allocation request of a mobile terminal is effectively realized, and the demand of delay sensitive service is satisfied.
    Type: Grant
    Filed: September 2, 2008
    Date of Patent: March 25, 2014
    Assignee: Alcatel Lucent
    Inventors: Xiaobing Leng, Dongyao Wang, Jimin Liu, Wu Zheng
  • Patent number: 8619700
    Abstract: To address the drawbacks of the current bandwidth requesting and allocation in the wireless broadband access network, the present invention proposes a technical solution of fast bandwidth requesting and allocation, wherein the MS sends a bandwidth allocation request message to the BS for only once, and the interactions between the BS and the MS are decreased so as to increase the efficiency of bandwidth requesting and allocation, effectively shorten the transmission waiting time of traffic data, and especially improve the support for latency-sensitive data traffic. Due to the fact that the interactions between the BS and the MS are decreased, various processing resources in the BS and the MS are spared.
    Type: Grant
    Filed: April 30, 2008
    Date of Patent: December 31, 2013
    Assignee: Alcatel Lucent
    Inventors: Jimin Liu, Wu Zheng, Xiaobing Leng
  • Publication number: 20130070721
    Abstract: The invention provides a temporary mobile station identity TMSI allocation method, comprising steps of: notifying a mobility management entity MME device of a corresponding mobility attribute based on a type of a Machine Type Communication MTC application, wherein the mobility attribute indicates whether a mobility of the MTC application is high or low; determining, by the MME device, a mobility layer associated with the MTC application according to the mobility attribute, and then allocating a TMSI from an available address space to a MTC device applying the MTC application based on a predetermined criterion, according to the determined mobility layer. The present invention further provides corresponding MTC server, MME device, network attachment method and location area update method.
    Type: Application
    Filed: June 24, 2011
    Publication date: March 21, 2013
    Inventors: Wu Zheng, Jimin Liu, Qun Zhao, Feng Han, Kaibin Zhang
  • Publication number: 20130028127
    Abstract: In embodiments of the present invention, there is disclosed a method, apparatus, and network node for determining target packet delays of respective segments of a link. The method may comprise: collecting parameters affecting packet delays; and determining target packet delays of respective segments based on the collected parameters and an overall requirement on the packet delay of the link according to a relation between the packet delays of respective segments and an overall packet delay of the link. Besides, there is further provided a method, apparatus, and network node for adjusting target packet delays of respective segments of a link. With embodiments of the present invention, it is provided a solution of a packet delay guarantee for a multi-hop relay system, and the solution has a great scalability and a good backward compatibility and is transparent to both the core network and user equipments.
    Type: Application
    Filed: April 6, 2010
    Publication date: January 31, 2013
    Applicant: ALCATEL LUCENT
    Inventors: Wu Zheng, Qun Zhao, Jimin Liu, Xiaobing Leng, Gang Shen
  • Publication number: 20130021941
    Abstract: Embodiments of the present invention disclose a method and apparatus for determining QoS of respective segments of a link. The method may comprise: determining QoS target values of the respective segments at least based on an overall requirement on the QoS of the link according to a relationship between QoS of respective segments and overall QoS of the link. With technical solutions of the present invention, it is provided a solution that could guarantee the QoS for a multi-hop relay system, and the solution has a great scalability and a good backward compatibility and is transparent to both a core network and user equipments.
    Type: Application
    Filed: April 6, 2010
    Publication date: January 24, 2013
    Applicant: ALCATEL LUCENT
    Inventors: Wu Zheng, Jimin Liu, Xiaobing Leng, Kaibin Zhang, Gang Shen
  • Publication number: 20130003650
    Abstract: A method for uplink transmission is proposed in the present invention. The method comprises steps of: selecting, based on statistical parameters for uplink traffic of a relay node, an uplink transmission method from a set of candidate uplink transmission methods; informing the relay node of the selected uplink transmission method; and performing the uplink transmission by the relay node according to the selected uplink transmission method. A base station and a relay node for implementing the uplink transmission method are also proposed in the present invention. According to the present invention, the base station can dynamically select different uplink transmission methods based on the statistical parameters for uplink traffic of the relay node, and the relay node can perform the uplink transmission based on the selected uplink transmission method so as to achieve favorable delay performance and high resource usage efficiency.
    Type: Application
    Filed: March 18, 2010
    Publication date: January 3, 2013
    Inventors: Feng Han, Wu Zheng, Xiaobing Leng, Kaibin Zhang, Jimin Liu
  • Patent number: 8345587
    Abstract: A method for extending a coverage of a base station in a wireless communication network is disclosed, characterized in that a relay station transfers control information and communication related information between the base station and the mobile station according to an indication of the base station.
    Type: Grant
    Filed: April 17, 2007
    Date of Patent: January 1, 2013
    Assignee: Alcatel Lucent
    Inventors: Gang Shen, Wei Ni, Wei Zou, Jimin Liu, Shan Jin
  • Publication number: 20120307774
    Abstract: The present invention provides a network access method and system for Machine Type Communications (MTC), wherein the method comprises the following steps: an MTC device sends a preamble to a base station; the base station sends a Random Access Response (RAR) to the MTC device; if the RAR does not contain a temporary access resource assignment indication, the MTC device sends a Layer 2/Layer 3 message to the base station; otherwise, the MTC device re-attempts to perform network access; the base station sends a contention resolution message to the MTC device; if the contention resolution message contains a self-identification contained in the Layer 2/Layer 3 message sent by the MTC device, the network access is completed; if the contention resolution message contains the temporary access resource assignment indication, the MTC device re-attempts to perform the network access; otherwise, the MTC device attempts to perform the network access using the originally used access resource again.
    Type: Application
    Filed: February 12, 2010
    Publication date: December 6, 2012
    Inventors: Qun Zhao, Wu Zheng, Jimin Liu
  • Patent number: 8290266
    Abstract: A method is proposed for segmenting a 2- or 3-D space, spanned by a set of medical data comprising intensity values at locations within the space, to estimate the position of an object of medical significance. The method using a level set function having a level set which provides a model of boundary of the object. The level set function is iteratively updated by a force defined based on the medical data. For computational efficiency, only the force in the narrowband of the model boundary needs to be calculated. Minimization of an energy function, related to the force, provides a termination condition for the iteration. High level knowledge can be incorporated in several ways, such as by an explicit force term which takes over from the force based on the medical data when prior knowledge of the object is about to be violated by the model.
    Type: Grant
    Filed: August 24, 2007
    Date of Patent: October 16, 2012
    Assignee: Agency for Science, Technology and Research
    Inventor: Jimin Liu
  • Publication number: 20120207366
    Abstract: A method for segmenting an object of interest (which may be a liver object) in an input image is disclosed. The method comprises the steps of: (a) segmenting the points in a region of interest in the input image into a first and second group of points using predetermined intensity threshold values; (b) identifying a first set of small connected components formed by points in the first group of points and transferring the points in the first set of small connected components to the second group of points; (c) identifying a second set of small connected components formed by points in the second group of points and transferring the points in the second set of small connected components to the first group of points; and (d) forming the segmented object of interest using the first group of points.
    Type: Application
    Filed: October 13, 2010
    Publication date: August 16, 2012
    Applicant: Agency for Science, Technology and Research
    Inventor: Jimin Liu
  • Patent number: 8239719
    Abstract: The present invention provides two primary Hybrid Automatic Repeat reQuest (HARQ) mechanisms for a multi-hop network, i.e. an active Mobile Multi-hop Relaying (MMR) HARQ and a passive Mobile Multi-hop Relaying (MMR) HARQ. According to the solution of the present invention, there are provided a method and a device for HARQ retransmission in relay stations of a wireless communication network, wherein in HARQ retransmission, the HARQ procedure is implemented based on resource allocated by a base station; and a method and device for HARQ in a base station, characterized in that a HARQ procedure is implemented in-between one or more relay stations and a mobile station. With the methods of the present invention, the HARQ problems existing in a multi-hop network are overcome, the correction rate of data transmission is improved, while time delay for data transmission is reduced.
    Type: Grant
    Filed: August 27, 2007
    Date of Patent: August 7, 2012
    Assignee: Alcatel Lucent
    Inventors: Gang Shen, Jimin Liu, Jin Shan, Wei Ni, Wei Zou
  • Patent number: 8203966
    Abstract: The invention relates to methods and devices for setting up connection for wireless relay network, wherein, mobile station utilizes the primary transmission path from itself and relay stations in the initial ranging and network entry procedure to send a request signal to base station. After the base station receives the request signal, it allocates a transmission path for the mobile station, and sends the information to the relay station on the path along the primary transmission path, and sends a response message to the mobile station. When the mobile station and the related relay stations obtain the corresponding response message and transmission path information, the signal sent by the mobile station is sent to the base station via relay stations along the transmission path.
    Type: Grant
    Filed: September 19, 2007
    Date of Patent: June 19, 2012
    Assignee: Alcatel Lucent
    Inventors: Dongyao Wang, Jimin Liu, Gang Shen, Erwu Liu