Patents by Inventor Landdy Zhang

Landdy Zhang 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).

  • Inactivity handling of devices with delay-tolerant traffic
    Patent number: 10009789
    Abstract: To relieve signaling congestion, UEs (30) having delay-tolerant data are moved more rapidly to the non UL synchronized state, freeing up PUCCH resources for users that have not indicated a delay-tolerance. In one embodiment, a resource conservative mode is defined for a UE (30) having delay-tolerant data (e.g., from a “background” app); otherwise, the UE (30) assumes a default mode. In one embodiment, the network sends the UE a pair of first and a second values (or indices to them) for a Time Alignment Timer, TAT (56, 66) in the UE (30). The first value—which is typically smaller than the second value—is used by the UE (30) in the resource conservative mode when the user data plane is internally concluded as being delay-tolerant or has already been confirmed to be delay-tolerant; the second value is used otherwise (i.e., in default mode). In the resource conservative mode, the shorter TAT value moves the UE from PUCCH more rapidly, and the UE (30) uses random access for infrequent scheduling requests.
    Type: Grant
    Filed: May 17, 2016
    Date of Patent: June 26, 2018
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Gunnar Bergquist, Johnny Karlsen, Patrick Lie Chin Cheong, Mauro Martins, Ahmed Nouah, Landdy Zhang
  • Inactivity Handling of Devices with Delay-Tolerant Traffic
    Publication number: 20170150391
    Abstract: To relieve signaling congestion, UEs (30) having delay-tolerant data are moved more rapidly to the non UL synchronized state, freeing up PUCCH resources for users that have not indicated a delay-tolerance. In one embodiment, a resource conservative mode is defined for a UE (30) having delay-tolerant data (e.g., from a “background” app); otherwise, the UE (30) assumes a default mode. In one embodiment, the network sends the UE a pair of first and a second values (or indices to them) for a Time Alignment Timer, TAT (56, 66) in the UE (30). The first value—which is typically smaller than the second value—is used by the UE (30) in the resource conservative mode when the user data plane is internally concluded as being delay-tolerant or has already been confirmed to be delay-tolerant; the second value is used otherwise (i.e., in default mode). In the resource conservative mode, the shorter TAT value moves the UE from PUCCH more rapidly, and the UE (30) uses random access for infrequent scheduling requests.
    Type: Application
    Filed: May 17, 2016
    Publication date: May 25, 2017
    Applicant: Telefonaktiebolaget LM Ericsson (PUBL)
    Inventors: Gunnar Bergquist, Johnny Karlsen, Patrick Lie Chin Cheong, Mauro Martins, Ahmed Nouah, Landdy Zhang