Patents by Inventor Aihua Edward Li

Aihua Edward 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: 8451735
    Abstract: The present disclosure relates to systems and methods for dynamic load balancing in a wireless network, such as a wireless local area network (WLAN) and the like. Specifically, the present invention periodically provides dynamic load balancing of mobile devices associated with a plurality of wireless access devices. This may include determining an optimum load and instructing wireless access devices that are overloaded to disassociate some mobile devices based upon predefined criteria. This disassociation is performed in a manner to minimize disruption by disassociating mobile devices with low usage, with close proximity to underutilized wireless access devices, and mobile devices not currently operating critical applications, such as voice.
    Type: Grant
    Filed: September 28, 2009
    Date of Patent: May 28, 2013
    Assignee: Symbol Technologies, Inc.
    Inventor: Aihua Edward Li
  • Patent number: 8189547
    Abstract: A self-configuration method for access devices in a wireless network begins by performing wireless data collection with the access devices during an automated calibration period. During this time, each access device receives beacons from one or more transmitting access devices, the beacons being transmitted and received using a plurality of different channels available to the wireless network. The method records radio frequency (RF) data associated with the received beacons, and processes the RF data to select, from the plurality of different channels, a respective channel for each of the access devices. In addition, the RF data is processed to adjust transmit power levels for the access devices. The selected channels and adjusted transmit power levels are then used as configuration settings for the access devices.
    Type: Grant
    Filed: October 21, 2008
    Date of Patent: May 29, 2012
    Assignee: Symbol Technologies, Inc.
    Inventor: Aihua Edward Li
  • Patent number: 8170050
    Abstract: A self-assignment method for assigning detector and working devices among a plurality of access devices in a wireless network begins by performing wireless data collection with the access devices during an automated calibration period. During this time, each access device receives beacons from one or more other transmitting access devices. The method records radio frequency (RF) data associated with beacons received during the wireless data collection, and thereafter automatically designates at least one of the access devices as a detector device, based upon the recorded RF data.
    Type: Grant
    Filed: October 28, 2008
    Date of Patent: May 1, 2012
    Assignee: Symbol Technologies, Inc.
    Inventor: Aihua Edward Li
  • Patent number: 8139543
    Abstract: A system, apparatus and techniques for detecting and self-healing coverage hole conditions in a wireless network are disclosed. The apparatus includes a monitor module that is configured in a data forwarding plane of a network switch and a regulatory module configured in a control plane of the switch. The monitor module is configured to detect a coverage hole condition affecting a mobile device associated with an access port and the regulatory module is configured to adjust transmission power to the access port based on the condition.
    Type: Grant
    Filed: October 14, 2008
    Date of Patent: March 20, 2012
    Assignee: Symbol Technologies, Inc.
    Inventor: Aihua Edward Li
  • Patent number: 7966010
    Abstract: A method includes determining a first performance indicator for a wireless network, the first performance indicator including an unperturbed value of a parameter of an access point of the network; perturbing the parameter of the wireless network by a predetermined increment to obtain a perturbed value of the parameter; determining a second performance indicator for the wireless network, the second performance indicator including the perturbed value of the parameter; and selecting the one of the unperturbed value of the parameter and the perturbed value of the parameter corresponding to a higher of the first performance indicator and the second performance indicator.
    Type: Grant
    Filed: September 25, 2008
    Date of Patent: June 21, 2011
    Assignee: Symbol Technologies, Inc.
    Inventor: Aihua Edward Li
  • Publication number: 20110075556
    Abstract: The present disclosure relates to systems and methods for dynamic load balancing in a wireless network, such as a wireless local area network (WLAN) and the like. Specifically, the present invention periodically provides dynamic load balancing of mobile devices associated with a plurality of wireless access devices. This may include determining an optimum load and instructing wireless access devices that are overloaded to disassociate some mobile devices based upon predefined criteria. This disassociation is performed in a manner to minimize disruption by disassociating mobile devices with low usage, with close proximity to underutilized wireless access devices, and mobile devices not currently operating critical applications, such as voice.
    Type: Application
    Filed: September 28, 2009
    Publication date: March 31, 2011
    Inventor: Aihua Edward Li
  • Publication number: 20100103842
    Abstract: A self-assignment method for assigning detector and working devices among a plurality of access devices in a wireless network begins by performing wireless data collection with the access devices during an automated calibration period. During this time, each access device receives beacons from one or more other transmitting access devices. The method records radio frequency (RF) data associated with beacons received during the wireless data collection, and thereafter automatically designates at least one of the access devices as a detector device, based upon the recorded RF data.
    Type: Application
    Filed: October 28, 2008
    Publication date: April 29, 2010
    Applicant: SYMBOL TECHNOLOGIES, INC.
    Inventor: Aihua Edward LI
  • Publication number: 20100098036
    Abstract: A self-configuration method for access devices in a wireless network begins by performing wireless data collection with the access devices during an automated calibration period. During this time, each access device receives beacons from one or more transmitting access devices, the beacons being transmitted and received using a plurality of different channels available to the wireless network. The method records radio frequency (RF) data associated with the received beacons, and processes the RF data to select, from the plurality of different channels, a respective channel for each of the access devices. In addition, the RF data is processed to adjust transmit power levels for the access devices. The selected channels and adjusted transmit power levels are then used as configuration settings for the access devices.
    Type: Application
    Filed: October 21, 2008
    Publication date: April 22, 2010
    Applicant: SYMBOL TECHNOLOGIES, INC.
    Inventor: Aihua Edward Li
  • Publication number: 20100091746
    Abstract: A system, apparatus and techniques for detecting and self-healing coverage hole conditions in a wireless network are disclosed. The apparatus includes a monitor module that is configured in a data forwarding plane of a network switch and a regulatory module configured in a control plane of the switch. The monitor module is configured to detect a coverage hole condition affecting a mobile device associated with an access port and the regulatory module is configured to adjust transmission power to the access port based on the condition.
    Type: Application
    Filed: October 14, 2008
    Publication date: April 15, 2010
    Inventor: Aihua Edward Li
  • Publication number: 20100075661
    Abstract: A method includes determining a first performance indicator for a wireless network, the first performance indicator including an unperturbed value of a parameter of an access point of the network; perturbing the parameter of the wireless network by a predetermined increment to obtain a perturbed value of the parameter; determining a second performance indicator for the wireless network, the second performance indicator including the perturbed value of the parameter; and selecting the one of the unperturbed value of the parameter and the perturbed value of the parameter corresponding to a higher of the first performance indicator and the second performance indicator.
    Type: Application
    Filed: September 25, 2008
    Publication date: March 25, 2010
    Inventor: Aihua Edward Li
  • Patent number: 6052348
    Abstract: A system and method for write location defect compensation in computer storage media comprises a reflectivity channel containing a detector device and counter device, an error threshold device coupled to the reflectivity channel for determining if the write location defect requires compensation, and memory devices coupled to a processor for storage of the defective write locations. A processor responsively reallocates write data to a different write location and thus maintains an efficient and reliable data storage system.
    Type: Grant
    Filed: July 1, 1998
    Date of Patent: April 18, 2000
    Assignee: Seagate Technology, Inc.
    Inventors: Karl A. Belser, Aihua Edward Li