Patents by Inventor Zhongfeng Li

Zhongfeng Li 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: 9203501
    Abstract: A relay transmission method and apparatus are provided. The method includes: configuring a subframe of a Time Division Duplex relay frame for a subframe of relay link), where the configuring the subframe of the TDD relay frame for the subframe of relay link includes: configuring a downlink subframe of the TDD relay frame for a DL subframe of relay link, and/or configuring the DL subframe of the TDD relay frame for an uplink subframe of relay link, and/or configuring a UL subframe of the TDD relay frame for the UL subframe of relay link; and performing relay transmission according to the subframe of relay link. When data is transmitted, a subframe that can be used for relay link transmission is configured, data transmission performed by using relay link complies with inherent constraints of a TDD frame structure in the prior art.
    Type: Grant
    Filed: November 22, 2013
    Date of Patent: December 1, 2015
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Zhongfeng Li, Zheng Shang
  • Patent number: 9160439
    Abstract: A method, a base station, and a system of configuring relay link resources are provided. The method of configuring relay link resources includes: receiving an orthogonal frequency division multiplexing OFDM symbol number reported by a relay node RN, in which the OFDM symbol is used by a physical downlink control channel PDCCH of a multimedia multicast broadcast single frequency network MBSFN subframe where a relay link of the RN is located; and configuring relay link resources according to the OFDM symbol number, an offset, and a length of a PDCCH in an eNB subframe, in which the offset is an offset of an RN frame relative to the time when the RN frame is initially synchronized with an eNB frame, and is smaller than a sum of a length of the PDCCH of the MBSFN subframe where the relay link of the RN is located and a first idle time.
    Type: Grant
    Filed: January 31, 2012
    Date of Patent: October 13, 2015
    Assignee: Huawei Technologies Co., Ltd.
    Inventor: Zhongfeng Li
  • Publication number: 20150230220
    Abstract: The present invention provides a method for processing an enhanced physical downlink control channel (EPDCCH), a network-side device, and a user equipment. The method includes: notifying a user equipment (UE) of M physical resource block (PRB) sets used for EPDCCH transmission and N reference signal (RS) configurations used for EPDCCH downlink control information (DCI) rate matching and/or EPDCCH resource mapping, and notifying the UE of correspondence between the M PRB sets and the N RS configurations, where N is a positive integer greater than 1, and M is a positive integer; and performing the EPDCCH DCI rate matching and/or the EPDCCH resource mapping according to the correspondence between the M PRB sets and the N RS configurations.
    Type: Application
    Filed: April 28, 2015
    Publication date: August 13, 2015
    Inventors: Zhongfeng Li, Zhenfei Tang, Jianmin Lu, Ke Wang
  • Publication number: 20150131587
    Abstract: A method for operating a communications controller includes defining a positive integer quantity of resource element groups from a resource block with a positive integer number N resource elements in each resource element group, the resource block having a total number of resource elements, the total number of resource elements consisting of available resource elements and reserved resource elements. The method also includes assigning a plurality of available resource elements to fill in each of the positive integer quantity of resource element groups with N available resource elements in each resource element group, and blocking any unassigned available resource elements from being used in a resource element group. The method further includes interleaving a plurality of control messages onto the positive integer quantity of resource element groups, and transmitting the positive integer quantity of resource element groups.
    Type: Application
    Filed: January 16, 2015
    Publication date: May 14, 2015
    Inventors: David Jean-Marie Mazzarese, Zhongfeng Li, Philippe Sartori
  • Publication number: 20150085743
    Abstract: A system and method for adapting code rate are provided. A method for a first communication device to transmit a resource assignment to at least one communication device includes assigning at least one transmission resource to transmit the resource assignment, adapting a code rate of an encoded payload based on the at least one transmission resource and a threshold, thereby producing an adapted payload, and transmitting the adapted payload.
    Type: Application
    Filed: November 26, 2014
    Publication date: March 26, 2015
    Inventors: Anthony C.K. Soong, Philippe Sartori, Brian Classon, Zhongfeng Li, Zhengwei Gong
  • Patent number: 8958361
    Abstract: A method for operating a communications controller includes defining a positive integer quantity of resource element groups from a resource block with a positive integer number N resource elements in each resource element group, the resource block having a total number of resource elements, the total number of resource elements consisting of available resource elements and reserved resource elements. The method also includes assigning a plurality of available resource elements to fill in each of the positive integer quantity of resource element groups with N available resource elements in each resource element group, and blocking any unassigned available resource elements from being used in a resource element group. The method further includes interleaving a plurality of control messages onto the positive integer quantity of resource element groups, and transmitting the positive integer quantity of resource element groups.
    Type: Grant
    Filed: November 15, 2011
    Date of Patent: February 17, 2015
    Assignee: Futurewei Technologies, Inc.
    Inventors: David Jean-Marie Mazzarese, Zhongfeng Li, Philippe Sartori
  • Patent number: 8953517
    Abstract: A system and method for adapting code rate are provided. A method for a first communication device to transmit a resource assignment to at least one communication device includes assigning at least one transmission resource to transmit the resource assignment, adapting a code rate of an encoded payload based on the at least one transmission resource and a threshold, thereby producing an adapted payload, and transmitting the adapted payload.
    Type: Grant
    Filed: June 21, 2011
    Date of Patent: February 10, 2015
    Assignee: Futurewei Technologies, Inc.
    Inventors: Anthony Soong, Philippe Sartori, Brian Classon, Zhongfeng Li, Zhengwei Gong
  • Publication number: 20150023290
    Abstract: Embodiments of the present invention provide a channel searching method, device, and system. The method includes: determining a number of a first channel control element according to a frequency domain resource that is configured for a terminal by a base station and supports transmission of a first physical downlink control channel and a position of the first channel control element in an RB to which the first channel control element belongs; determining a search space according to the frequency domain resource and an aggregation level of the first physical downlink control channel; and determining the first channel control element in the search space according to the number of the first channel control element. The embodiments of the present invention implement detection of a first physical downlink control channel such as an E-PDCCH or an R-PDCCH in the search space determined by the embodiments of the present invention.
    Type: Application
    Filed: September 12, 2014
    Publication date: January 22, 2015
    Inventors: Zhenfei Tang, Zhongfeng Li
  • Publication number: 20150009944
    Abstract: Embodiments of the present invention disclose an interference coordination method and node device in an LTE system, where the interference coordination method in an LTE system includes: generating an interference coordination message, where the interference coordination message includes a priority configuration of each resource of multiple resources of a source node device, and a resource with a preset priority in the priority configuration is used to transmit a control channel or a control message; sending the interference coordination message to a target node device, so that the target node device performs interference coordination according to the interference coordination message; or sending the interference coordination message to an operation, administration and maintenance network element, so that the operation, administration and maintenance network element configures the interference coordination message for a target node device, so that the target node device performs interference coordination accor
    Type: Application
    Filed: September 25, 2014
    Publication date: January 8, 2015
    Inventor: Zhongfeng Li
  • Patent number: 8923363
    Abstract: A method for communicating DM-RS symbols to support MIMO transmissions having five or more layers of spatial multiplexing. A first subframe is communicated carrying two leading symbols of a first length-4 OCC sequence and two leading symbols of a second length-4 OCC sequence, and a second subframe is communicated carrying two trailing symbols of the first length-4 OCC and two trailing symbols of the second length-4 OCC sequence. Optionally four length-2 OCCs can be carried in a similar manner or, alternatively, in different frequency bands or resource block pairs of a common subframe.
    Type: Grant
    Filed: July 9, 2012
    Date of Patent: December 30, 2014
    Assignee: Futurewei Technologies, Inc.
    Inventors: Philippe Sartori, Zhongfeng Li, Anthony C. K. Soong, Yiqun Qian
  • Patent number: 8897199
    Abstract: A relay transmission method and a network node are disclosed. The method includes: receiving configuration information about a relay link subframe, the relay link subframe is configured in subframes in a period equivalent to an integer multiple of one frame, where the relay link subframe takes on a specific HARQ timeline; and performing relay link transmission according to the relay link subframe. The relay transmission method put forward herein meets various constraint conditions of the LTE FDD system in the relay transmission performed according to the selected relay link subframe, and is backward-compatible with the UE in the existing LTE system.
    Type: Grant
    Filed: May 9, 2011
    Date of Patent: November 25, 2014
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Zhongfeng Li, Zheng Shang, Rongting Gu, Wei Jin
  • Patent number: 8797896
    Abstract: A method for wireless communication comprises a donor enhanced Node B (eNB) transmitting system information for a subframe structure to a relay node (RN), which information comprises radio resource configuration and/or timing information for uplink backhaul transmission. The RN uses an automatic method to select the Round Trip Time (RTT) value for the Hybrid Automatic Repeat request (HARQ) on the uplink backhaul (Un) relay link. The RTT value is implicitly determined according to the Un (backhaul) subframe or MBSFN subframe configuration periodicity. The RTT option is signaled by the Un subframe configuration period of the MBSFN Un downlink signals.
    Type: Grant
    Filed: August 18, 2011
    Date of Patent: August 5, 2014
    Assignee: Futurewei Technologies, Inc.
    Inventors: Zhongfeng Li, Philippe Sartori
  • Patent number: 8792438
    Abstract: A system and method for search space reconfiguration in a communications system are provided. A method for communications controller operations includes reconfiguring a first search space including a first set of resources into a second search space including a second set of resources, signaling second search space information to a communications device, and signaling a first set of other information to the communications device within an intermediate search space including resources common to both the first set of resources and the second set of resources.
    Type: Grant
    Filed: September 6, 2011
    Date of Patent: July 29, 2014
    Assignee: FutureWei Technologies, Inc.
    Inventors: Deping Liu, Zhengwei Gong, Zhongfeng Li, Philippe Sartori, Rongting Gu
  • Patent number: 8761074
    Abstract: In one embodiment, a method for wireless communication includes transmitting a first system information for a subframe structure from a controller to a relay node. The first system information includes radio resource configuration for a downlink backhaul link. The subframe structure includes a physical downlink control channel (PDCCH) region for user equipments and a separate relay physical downlink control channel (R-PDCCH) region for relay nodes.
    Type: Grant
    Filed: August 23, 2010
    Date of Patent: June 24, 2014
    Assignee: Futurewei Technologies, Inc.
    Inventors: Yufei Blankenship, Jianmin Lu, Zhongfeng Li
  • Patent number: 8743785
    Abstract: A system and method for reducing interference are provided. A method for communications controller operations in a multi-carrier system includes generating information for a broadcast channel, preparing the information for transmission, selecting a location for an unoccupied subcarrier from a plurality of available locations, and placing the prepared information into a plurality of contiguous subcarriers, where the plurality of contiguous subcarriers includes the unoccupied subcarrier and a plurality of other subcarriers. The method also includes transmitting the plurality of contiguous subcarriers.
    Type: Grant
    Filed: August 15, 2011
    Date of Patent: June 3, 2014
    Assignee: Futurewei Technologies, Inc.
    Inventors: Bingyu Qu, Philippe Sartori, Weimin Xiao, Brian Classon, Vipul Desai, Anthony C. K. Soong, Zhongfeng Li
  • Publication number: 20140086084
    Abstract: A method for communicating in a wireless communications system includes generating a channel state information (CSI) process information element (IE) including a CSI process identifier, a non-zero padded CSI-reference signal (CSI-RS) identifier, an interference measurement resource (IMR) identifier, and channel quality indicator (CQI) report configuration information. The method also includes transmitting the CSI process IE.
    Type: Application
    Filed: September 27, 2013
    Publication date: March 27, 2014
    Inventors: Hao Bi, Ke Wang, Zhongfeng Li, Jianmin Lu, David Jean-Marie Mazzarese
  • Publication number: 20140078943
    Abstract: A relay transmission method and apparatus are provided. The method includes: configuring a subframe of a Time Division Duplex relay frame for a subframe of relay link), where the configuring the subframe of the TDD relay frame for the subframe of relay link includes: configuring a downlink subframe of the TDD relay frame for a DL subframe of relay link, and/or configuring the DL subframe of the TDD relay frame for an uplink subframe of relay link, and/or configuring a UL subframe of the TDD relay frame for the UL subframe of relay link; and performing relay transmission according to the subframe of relay link. When data is transmitted, a subframe that can be used for relay link transmission is configured, data transmission performed by using relay link complies with inherent constraints of a TDD frame structure in the prior art.
    Type: Application
    Filed: November 22, 2013
    Publication date: March 20, 2014
    Applicant: Huawei Technologies Co., Ltd.
    Inventors: Zhongfeng Li, Zheng Shang
  • Patent number: 8675579
    Abstract: A system and method for a system and method for allocating network resources for a communications link are provided. A method for communications controller operations includes allocating network resources to a communications link. The communications link includes an uplink (UL) part and a downlink (DL) part. The method also includes if a type of the allocated network resources is not equal in the DL part and the UL part, transmitting a first indication of the allocated network resources for one part of either the UL part or the DL part and a second indication of the allocated network resources for a remaining part of either the UL part or the DL part. The first indication and the second indication are based on an amount of network resources allocated. The method further includes if the type of the allocated network resources is equal in the DL part and the UL part, transmitting an indication of the allocated network resources for one part of either the UL part or the DL part.
    Type: Grant
    Filed: April 4, 2011
    Date of Patent: March 18, 2014
    Assignee: FutureWei Technologies, Inc.
    Inventors: Anthony C. K. Soong, Philippe Sartori, Brian Classon, Zhongfeng Li, Rongting Gu
  • Patent number: 8619724
    Abstract: A relay transmission method and apparatus are provided. The method includes: configuring a subframe of a Time Division Duplex (TDD) relay frame for a subframe of relay link (S201), where the configuring the subframe of the TDD relay frame for the subframe of relay link includes: configuring a downlink (DL) subframe of the TDD relay frame for a DL subframe of relay link, and/or configuring the DL subframe of the TDD relay frame for an uplink (UL) subframe of relay link, and/or configuring a UL subframe of the TDD relay frame for the UL subframe of relay link; and performing relay transmission according to the subframe of relay link (S202). When data is transmitted, a subframe that can be used for relay link transmission is configured, data transmission performed by using relay link complies with inherent constraints of a TDD frame structure in the prior art, and coverage of a system using a TDD relay frame is expanded, thus improving the throughput.
    Type: Grant
    Filed: May 16, 2011
    Date of Patent: December 31, 2013
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Zhongfeng Li, Zheng Shang
  • Publication number: 20130182633
    Abstract: A method for operating a relay node during a handoff from a first controller to a second controller includes receiving a first instruction from the first controller to discontinue using a first set of wireless backhaul link resources allocated to the relay node by the first controller and to temporarily use a second set of wireless backhaul link resources dedicated by the second controller. The method also includes receiving a second instruction from the second controller to discontinue using the second set of wireless backhaul link resources and to begin using a third set of wireless backhaul link resources allocated to the relay node by the second controller.
    Type: Application
    Filed: January 12, 2012
    Publication date: July 18, 2013
    Applicant: FutureWei Technologies, Inc.
    Inventors: Philippe Sartori, Zhongfeng Li, Anthony C.K. Soong