Patents by Inventor Xiaoming Lai

Xiaoming Lai 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).

  • Publication number: 20150334771
    Abstract: A mobile phone network node may determine traffic load associated with a mobile phone network and initiate discontinuous transmission at a frame level, based at least in part upon, determining that the traffic load is less than a first threshold. The mobile phone network node may further initiate discontinuous transmission at a subframe level, based at least in part upon, determining that the traffic load is greater than the first threshold and less than a second threshold and initiate discontinuous transmission at a symbol level, based at least in part upon, determining that the traffic load is greater than the second threshold.
    Type: Application
    Filed: May 15, 2014
    Publication date: November 19, 2015
    Applicant: Telefonaktiebolaget L M Ericsson (publ)
    Inventors: Weigang Li, Xiaoming Lai, Xixian Chen
  • Publication number: 20150319741
    Abstract: An apparatus for allocating radio resources shared among a plurality of network operators is provided. Each network operator has at least one scheduling entity, SE, and a respective resource allocation, RA, probability for being selected for radio resource allocation during a transmission time interval, TTI. The apparatus includes a processor and a memory. The memory contains instructions executable by the processor that are configured to cause the apparatus, within a TTI, to select a network operator of the plurality of network operators for resource allocation within the TTI based at least in part on the RA probability of the network operator, allocate radio resources to an SE of the selected network operator within the TTI and update the RA probability of selecting each of the plurality of network operators for a next selection of resource allocation.
    Type: Application
    Filed: May 1, 2014
    Publication date: November 5, 2015
    Inventors: Weigang Li, Xiaoming Lai, Xixian Chen
  • Publication number: 20150249490
    Abstract: A node (28) of a radio access network (20) communicates over a radio interface (32) with a wireless terminal (30). The node (28) comprises a transmitter (34) and a controller (40). The transmitter (34) selectively operates in plural multiple input multiple output (MIMO) modes for downlink transmission over the radio interface (32). The controller (40) uses both a terminal speed value and a throughput value to make a determination when to switch between the plural multiple input multiple output (MIMO) modes for communicating with the wireless terminal. The plural MIMO modes comprise a first mode and a second mode. In the first mode open loop MIMO operates with cyclical diversity delay. In the second mode open loop MIMO operates without cyclical diversity delay. Although operating in open loop MIMO, advantages such as those of closed loop MIMO are realized.
    Type: Application
    Filed: May 18, 2015
    Publication date: September 3, 2015
    Inventors: Xixian Chen, Peter Deane, Xiaoming Lai
  • Publication number: 20150172988
    Abstract: A node and method for communication with a user equipment, UE, are provided. The source node includes at least one processor configured to cause transmission of a first handover command message to the UE. The first handover command message includes first configuration information for handover to a target node. At least one receiver is configured to receive second configuration information from the target node after transmission of the first handover command message to the UE. The at least one processor is further configured to cause transmission of a second handover command message to the UE. The second handover command message includes the second configuration information received from the target node. The first configuration information is configured to be used in combination with the second configuration information to allow the UE to access the target node for handover.
    Type: Application
    Filed: December 18, 2013
    Publication date: June 18, 2015
    Applicant: Telefonaktiebolaget L M Erisson (Publ)
    Inventors: Xiaoming LAI, Mercy GEORGE, Johanna NICOLETTA
  • Patent number: 9036608
    Abstract: A node (28) of a radio access network (20) communicates over a radio interface (32) with a wireless terminal (30). The node (28) comprises a transmitter (34) and a controller (40). The transmitter (34) selectively operates in plural multiple input multiple output (MIMO) modes for downlink transmission over the radio interface (32). The controller (40) uses both a terminal speed value and a throughput value to make a determination when to switch between the plural multiple input multiple output (MIMO) modes for communicating with the wireless terminal. The plural MIMO modes comprise a first mode and a second mode. In the first mode open loop MIMO operates with cyclical diversity delay. In the second mode open loop MIMO operates without cyclical diversity delay. Although operating in open loop MIMO, advantages such as those of closed loop MIMO are realized.
    Type: Grant
    Filed: November 9, 2012
    Date of Patent: May 19, 2015
    Assignee: Telefonaktiebolaget L M Ericsson (publ)
    Inventors: Xixian Chen, Peter Deane, Xiaoming Lai
  • Publication number: 20150045040
    Abstract: Methods and apparatus are disclosed for handing over of a high-speed mobile terminal or user equipment from a source network node to a target network node. Reliable methods for measuring the speed of a moving user equipment are disclosed. Parameters used in a handover procedure are also adjusted in accordance with the speed of the user equipment. For handing over a high-speed user equipment, the present application discloses that the source network node can coordinate with the target network node and other candidate network nodes in transmitting a handover command to prevent handover failures.
    Type: Application
    Filed: August 12, 2013
    Publication date: February 12, 2015
    Applicant: Telefonaktiebolaget L M Ericsson (Publ)
    Inventors: Xiaoming Lai, Xixian Chen, Weigang Li
  • Publication number: 20140133317
    Abstract: A node (28) of a radio access network (20) communicates over a radio interface (32) with a wireless terminal (30). The node (28) comprises a transmitter (34) and a controller (40). The transmitter (34) selectively operates in plural multiple input multiple output (MIMO) modes for downlink transmission over the radio interface (32). The controller (40) uses both a terminal speed value and a throughput value to make a determination when to switch between the plural multiple input multiple output (MIMO) modes for communicating with the wireless terminal. The plural MIMO modes comprise a first mode and a second mode. In the first mode open loop MIMO operates with cyclical diversity delay. In the second mode open loop MIMO operates without cyclical diversity delay. Although operating in open loop MIMO, advantages such as those of closed loop MIMO are realized.
    Type: Application
    Filed: November 9, 2012
    Publication date: May 15, 2014
    Applicant: Telefonaktiebolaget L M Ericsson (Publ)
    Inventors: Xixian Chen, Peter Deane, Xiaoming Lai