Patents by Inventor Vytautas Kezys

Vytautas Kezys 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: 8849299
    Abstract: A method for modulating scanning behavior of a wireless user equipment (UE) device includes determining a geographic area location where the wireless UE device is located and responsive to determining that a radio access technology (RAT) previously available in the geographic area location is not currently available, modifying the frequency of searches for the radio access technology. A corresponding wireless user device is also shown.
    Type: Grant
    Filed: April 20, 2012
    Date of Patent: September 30, 2014
    Assignee: BlackBerry Limited
    Inventors: Nicholas Alfano, Vytautas Kezys, Yiu Lam, Richard George, Brian Oliver, Mark Pletsch, Balaji Gopalan, Paul Carpenter
  • Publication number: 20120208515
    Abstract: A method for modulating scanning behavior of a wireless user equipment (UE) device includes determining a geographic area location where the wireless UE device is located and responsive to determining that a radio access technology (RAT) previously available in the geographic area location is not currently available, modifying the frequency of searches for the radio access technology. A corresponding wireless user device is also shown.
    Type: Application
    Filed: April 20, 2012
    Publication date: August 16, 2012
    Applicant: RESEARCH IN MOTION LIMITED
    Inventors: Nicholas Alfano, Vytautas Kezys, Yiu Lam, Richard George, Brian Oliver, Mark Pletsch, Balaji Gopalan, Paul Carpenter
  • Patent number: 8185103
    Abstract: A network node provides coverage information to wireless UE devices from a database that correlates coverage information for a radio access network with geographic area locations. The network node accepts updates to the coverage information for the radio access network via a first interface and downloads coverage information from the database to a wireless user equipment (UE) device via a second interface.
    Type: Grant
    Filed: May 23, 2011
    Date of Patent: May 22, 2012
    Assignee: Research In Motion Limited
    Inventors: Nicholas Alfano, Vytautas Kezys, Yiu Lam, Richard George, Brian Oliver, Mark Pletsch, Balaji Gopalan, Paul Carpenter
  • Publication number: 20110223935
    Abstract: A network node provides coverage information to wireless UE devices from a database that correlates coverage information for a radio access network with geographic area locations. The network node accepts updates to the coverage information for the radio access network via a first interface and downloads coverage information from the database to a wireless user equipment (UE) device via a second interface.
    Type: Application
    Filed: May 23, 2011
    Publication date: September 15, 2011
    Applicant: Research in Motion Limited
    Inventors: Nicholas Alfano, Vytautas Kezys, Yiu Lam, Richard George, Brian Oliver, Mark Pletsch, Balaji Gopalan, Paul Carpenter
  • Patent number: 7953410
    Abstract: A cross-technology coverage mapping system and method for modulating scanning behavior of a wireless user equipment (UE) device in a radio network environment. In one exemplary embodiment, the wireless UE device is operable to determine its geographic area location. A logic module of the wireless UE device is adapted for interrogating a database to determine which radio access technologies (RATs) have coverage in the geographic area location. Responsive to the interrogation, scanning by the wireless UE device is restricted to only those RATs that have coverage in the particular geographic area.
    Type: Grant
    Filed: March 2, 2006
    Date of Patent: May 31, 2011
    Assignee: Research In Motion Limited
    Inventors: Nicholas Alfano, Vytautas Kezys, Yiu Lam, Richard George, Brian Oliver, Mark Pletsch, Balaji Gopalan, Paul Carpenter
  • Publication number: 20110085533
    Abstract: A wireless access point supports data rates and advertises an indication of a minimum data rate for advertisement. Those of the supported data rates that are less than the minimum data rate for advertisement are reserved for limited use. A mobile station that requests to communicate with the wireless access point at one of the one or more supported data rates that are reserved for limited use is informed by the wireless access point how much time communications with the wireless access point at one or more of the one or more supported data rates reserved for limited use will be permitted.
    Type: Application
    Filed: December 15, 2010
    Publication date: April 14, 2011
    Applicants: RESEARCH IN MOTION LIMITED, MCMASTER UNIVERSITY
    Inventors: Terence Douglas Todd, Vytautas Kezys, Mohammed N.A. Smadi
  • Publication number: 20070265003
    Abstract: Intra-enterprise wireless handset (WH) calls between WHs operating in a wireless local area network (WLAN) are established directly between the WHs via a call connection that is maintained within the LAN without being routed through the cellular network (CN). This eliminates the cost of placing and maintaining calls through the CN for intra-enterprise calls, and also enables use of capabilities that are available in the enterprise telecomm equipment. Upon detection of a trigger condition, if and when it is more likely that a complete vertical handover (VHO) may be needed, the call connection between the WHs in the LAN is replaced by one that is routed through the CN. Thereafter, a VHO may occur (if at all) upon detection of a radio handover condition.
    Type: Application
    Filed: April 27, 2007
    Publication date: November 15, 2007
    Applicants: RESEARCH IN MOTION LIMITED, MCMASTER UNIVERSITY
    Inventors: Vytautas Kezys, Terence Todd
  • Publication number: 20070207815
    Abstract: A cross-technology coverage mapping system and method for modulating scanning behavior of a wireless user equipment (UE) device in a radio network environment. In one exemplary embodiment, the wireless UE device is operable to determine its geographic area location. A logic module of the wireless UE device is adapted for interrogating a database to determine which radio access technologies (RATs) have coverage in the geographic area location. Responsive to the interrogation, scanning by the wireless UE device is restricted to only those RATs that have coverage in the particular geographic area.
    Type: Application
    Filed: March 2, 2006
    Publication date: September 6, 2007
    Inventors: Nicholas Alfano, Vytautas Kezys, Yiu Lam, Richard George, Brian Oliver, Mark Pletsch, Balaji Gopalan, Paul Carpenter
  • Publication number: 20070070948
    Abstract: In one illustrative example, a mobile communication device operating in a wireless local area network (WLAN) of a communication network maintains an inter-enterprise voice call via its WLAN interface (e.g. 802.11/VoIP/SIP) with another communication device in the communication network. Communications of the voice call are maintained solely within the communication network and not routed through a conferencing gateway. During the voice call, a handover of the voice call from the WLAN to a wireless wide area network (WWAN) (e.g. GSM/GPRS) may or may not be required. In response to identifying a handover indication during the voice call, the mobile device causes a request message (e.g. a SIP INVITE message) to be sent over the WWAN to the conferencing gateway for establishing a first connection leg through the WWAN via its WWAN interface with a conference room of the conferencing gateway. The mobile device also causes a re-routing message (e.g.
    Type: Application
    Filed: September 22, 2006
    Publication date: March 29, 2007
    Inventors: Vytautas Kezys, Terence Todd, Mohammed Smadi, Dongmei Zhao
  • Publication number: 20070008928
    Abstract: A method, mobile electronic device and system for synchronizing hand-off of a voice media session between a WAN/cellular network and a WLAN network. When a hand-off occurs, the connection with both networks is temporarily maintained and the voice data on both connections compared to determine differences in the delays experienced over both connections. The timing of one or both voice streams is adjusted to synchronize the voice streams, and then the handoff is completed.
    Type: Application
    Filed: July 4, 2006
    Publication date: January 11, 2007
    Applicant: RESEARCH IN MOTION LIMITED
    Inventor: Vytautas Kezys
  • Publication number: 20060111098
    Abstract: A method and system that employs a proxy server associated with a mobile device in a wireless network, wherein the proxy server monitors whether the mobile device is still in coverage. The media service operates on top of a connectionless peer-to-peer packet-based transport protocol. If the proxy server detects that the device has lost coverage for more than a predetermined length of time, then it sends an out-of-coverage message to the other termination point engaged in the media service. The out-of-coverage message may instruct the termination point to release or cancel the service.
    Type: Application
    Filed: November 19, 2004
    Publication date: May 25, 2006
    Inventors: Sherif Abdel-Kader, Vytautas Kezys
  • Publication number: 20060109825
    Abstract: A mobile wireless device for use in a wireless network, wherein the wireless network includes regular access points and border access points. The border access points are those access points situated at the edge of the campus or other physical facility associated with the wireless network and they define the edge of the coverage area of the wireless network. The mobile wireless device predicts a possible drop of an active service due to loss of coverage by recognizing when it has connected with a border access point. A warning is output to the user of the mobile wireless device. The mobile wireless device may further recognize if it is located on the exterior side of the border access point away from the interior of the wireless network.
    Type: Application
    Filed: November 19, 2004
    Publication date: May 25, 2006
    Inventors: Sherif Abdel-Kader, Vytautas Kezys
  • Publication number: 20060084395
    Abstract: By using multiple antennas in a diversity arrangement, a mobile communication device is operable to automatically optimize the best antenna or antenna combination in reaction to the device's immediate environment. The individual antenna designs can be optimized to provide high antenna system efficiency for a number of likely device environments.
    Type: Application
    Filed: October 17, 2005
    Publication date: April 20, 2006
    Inventors: Vytautas Kezys, Yihong Qi
  • Publication number: 20050249137
    Abstract: In one illustrative technique, a contention-free period indication is communicated by a wireless access point (AP) (e.g. a battery-powered AP) to a plurality of mobile communication devices within a beacon of a superframe. The contention-free period indication identifies a duration of a contention-free period within which the mobile devices must refrain from communicating through the AP. During each contention period subframe of each superframe, information is communicated to and/or from the mobile devices through a wireless transceiver of the AP. During each power conservation subframe of each superframe, the wireless transceiver is placed into a power conservation mode which is at least part of the contention-free period. Alternatively, or in combination with the wireless transceiver being placed in the power conservation mode, information for the mobile devices may be communicated to and/or from another AP within each relay subframe of each superframe which is at least part of the contention-free period.
    Type: Application
    Filed: March 24, 2005
    Publication date: November 10, 2005
    Inventors: Terence Todd, Dongmei Zhao, Vytautas Kezys
  • Publication number: 20050232209
    Abstract: One illustrative method of providing network broadcast information to a wireless device from a wireless local area network (WLAN) includes the steps of receiving, from one or more available cellular networks or a network database, cellular network broadcast information associated with the one or more available cellular networks; providing the cellular network broadcast information in a generic container message which varies in content and format according to one or more cellular standards associated with the one or more available cellular networks; and causing the generic container message to be regularly broadcasted for receipt and use by a wireless device.
    Type: Application
    Filed: November 19, 2004
    Publication date: October 20, 2005
    Inventors: Adrian Buckley, Vytautas Kezys
  • Publication number: 20050190782
    Abstract: A method and mobile device for performing wireless channel selection that employs more than one concurrent level 2 interface to facilitate a level 3 handoff. The method and device maintain an active service over a first level 3 connection through a first transceiver, establish a second level 3 connection through a second transceiver, and then switch the service over to the second connection. To establish an appropriate level 3 connection, the mobile device may evaluate candidate channels against criteria associated with the active service to ensure quality of service can be maintained over the new connection or may adapt the active service to a candidate channel.
    Type: Application
    Filed: February 27, 2004
    Publication date: September 1, 2005
    Inventors: Adrian Buckley, Craig Dunk, Vytautas Kezys, Russell Owen