Patents by Inventor Ahmad Mohammad Mohammad Kholaif
Ahmad Mohammad Mohammad Kholaif 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).
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Publication number: 20160135205Abstract: A method for accessing a Wi-Fi network from user equipment (UE) using a preferred access point (AP) when more than one AP is available is provided. RSSI included in received responses to scanning from the US and past connectivity data associated with the APs are used to generate a preferred list of APs from which an AP for connecting or switching to is selected.Type: ApplicationFiled: January 18, 2016Publication date: May 12, 2016Inventors: Ion BARBU, Krishna Kumar BAKTHAVATHSALU, Ahmad Mohammad Mohammad KHOLAIF, Nayef Fawaz MENDAHAWI
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Patent number: 9030985Abstract: A wireless communications device stores a first cryptographic key in connection with a profile, the profile indicating a security type requiring no credentials and a network name. An access point (AP) supports a wireless local area network (WLAN), the WLAN having the network name, the WLAN supporting the security type and the WLAN requiring a second cryptographic key for encryption. The wireless communications device successfully authenticates and associates with the AP, thus joining the WLAN. Subsequent to joining the WLAN, the wireless communications device conducts encrypted communications with the AP and detects from the encrypted communications that there is a mismatch between the first cryptographic key and the second cryptographic key. Responsive to detecting the mismatch, the wireless communications device bans the profile or the AP or both.Type: GrantFiled: March 22, 2013Date of Patent: May 12, 2015Assignee: BlackBerry LimitedInventors: Ahmad Mohammad Mohammad Kholaif, Ion Barbu, Nayef Fawaz Mendahawi, Krishna Kumar Bakthavathsalu
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Patent number: 8881238Abstract: In the event of an authentication process failure, a mobile station bans a connection profile storing the credentials provided by the mobile station when initiating the failed authentication process, thus affecting how subsequent scans—other than discovery scans—and connection attempts are handled. In the event of an authentication process failure, a mobile station bans or suppresses an access point with which the mobile station initiated the failed authentication process. The mobile station refrains from transmitting any communications addressed to the unique identifier of any banned access point. The mobile station may ignore any communications received from a banned access point. Suppressed access points are occasionally not made available to the mobile station for selection as a target for a connection attempt.Type: GrantFiled: January 30, 2014Date of Patent: November 4, 2014Assignee: BlackBerry LimitedInventors: Ahmad Mohammad Mohammad Kholaif, Ion Barbu, Krishna Kumar Bakthavathsalu, Nayef Fawaz Mendahawi, Denis Fedotenko
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Patent number: 8874177Abstract: A system and method of reducing the WLAN power consumption and limiting battery drain of a mobile communications device is provided. The mechanism continuously monitors for changes in the WLAN and cellular signal strength and modifies the WLAN profile scanning activity accordingly. By monitoring for changes, transitions can be detected which indicate the location of the mobile device (i.e., indoor or outdoor). An increase in cellular signal strength and a decrease in WLAN signal strength indicates the user is transitioning outdoors where WLAN coverage may be limited. To reduce battery power consumption, background scanning is suspended or its frequency significantly lowered. Moving indoors is indicated by a decrease in cellular signal strength and an increase in WLAN signal strength. Background/Connectivity scanning frequency is increased to provide shorter time-to-connect to WLAN Networks for the user within the WLAN coverage area.Type: GrantFiled: February 1, 2013Date of Patent: October 28, 2014Assignee: BlackBerry LimitedInventors: Krishna Kumar Bakthavathsalu, Ion Barbu, Nayef Fawaz Mendahawi, Ahmad Mohammad Mohammad Kholaif
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Patent number: 8837513Abstract: A wireless client device associated with an access point records at which time T after a transmission time of a most recent beacon frame it gained access to the wireless medium for transmission of an uplink packet to the access point. The wireless client device self-schedules target transmission times for one or more future uplink packets, where each of the target transmission times is T after a respective expected transmission time of a beacon frame. Rather than immediately attempting to gain access to the wireless medium when it determines that another uplink packet is ready for transmission, the wireless client device waits until shortly before its next upcoming target transmission time to make the attempt. Implementation in wireless client devices that are attempting to transmit uplink packets to the same access point may prolong the amount of time they can remain in a doze state, potentially reducing their power consumption.Type: GrantFiled: September 4, 2012Date of Patent: September 16, 2014Assignee: BlackBerry LimitedInventor: Ahmad Mohammad Mohammad Kholaif
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Publication number: 20140148131Abstract: In the event of an authentication process failure, a mobile station bans a connection profile storing the credentials provided by the mobile station when initiating the failed authentication process, thus affecting how subsequent scans—other than discovery scans—and connection attempts are handled. In the event of an authentication process failure, a mobile station bans or suppresses an access point with which the mobile station initiated the failed authentication process. The mobile station refrains from transmitting any communications addressed to the unique identifier of any banned access point. The mobile station may ignore any communications received from a banned access point. Suppressed access points are occasionally not made available to the mobile station for selection as a target for a connection attempt.Type: ApplicationFiled: January 30, 2014Publication date: May 29, 2014Applicant: BLACKBERRY LIMITEDInventors: Ahmad Mohammad Mohammad Kholaif, Ion Barbu, Krishna Kumar Bakthavathsalu, Nayef Fawaz Mendahawi, Denis Fedotenko
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Patent number: 8724603Abstract: A method for network access and a mobile station configured for the same is described. In one embodiment, there is provided a method for network access on a mobile station comprising: scanning for Wi-Fi networks; receiving responses from available wireless access points (APs) of the Wi-Fi networks; selecting a Wi-Fi network in accordance with past connectivity data associated with the Wi-Fi networks of the available APs; and attempting to connect to the selected Wi-Fi network.Type: GrantFiled: March 8, 2011Date of Patent: May 13, 2014Assignee: BlackBerry LimitedInventors: Ion Barbu, Krishna Kumar Bakthavathsalu, Ahmad Mohammad Mohammad Kholaif, Nayef Fawaz Mendahawi
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Patent number: 8699379Abstract: A target access point is selected from the results of a discovery scan so that a mobile station can attempt a connection with the target access point. The mobile station determines whether the target access point belongs to a small office/home office (SOHO)-type wireless local area network (WLAN) deployment or to a corporate/enterprise-type WLAN deployment. The mobile station then configures itself according to the determination of the type of WLAN deployment to which the target access point belongs.Type: GrantFiled: April 8, 2011Date of Patent: April 15, 2014Assignee: BlackBerry LimitedInventors: Ahmad Mohammad Mohammad Kholaif, Nayef Fawaz Mendahawi, Ion Barbu, Krishna Kumar Bakthavathsalu
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Methods and apparatus for use in controlling an access point mode of operation for a mobile terminal
Patent number: 8693451Abstract: Techniques for use in controlling an access point mode of operation of a mobile terminal are described. Initially, the mobile terminal operates in the access point mode of operation for communication with one or more other mobile terminals. While operating in the access point mode, the mobile terminal receives, from the one or more other mobile terminals, network information comprising one or more network identifiers which identify one or more wireless networks within coverage of the one or more other mobile terminals. The mobile terminal disables the access point mode of operation in response to identifying that at least one of the received network identifiers corresponds to a predetermined wireless network or predetermined type of wireless network. In one example, the mobile terminal is operative in accordance with IEEE 802.11, the received network identifiers comprise service set identifiers (SSIDs), and the predetermined wireless network is an enterprise network.Type: GrantFiled: January 21, 2011Date of Patent: April 8, 2014Assignee: Blackberry LimitedInventors: Ahmad Mohammad Mohammad Kholaif, Rudy Eugene Rawlins -
Patent number: 8509731Abstract: An emergency locator component for a mobile communication device enables the mobile communication device to obtain location information from other neighboring mobile devices in the event that the mobile communication device is unable to determine its own location. The mobile communication device employs a short-range radiofrequency transceiver to broadcast a request for location information to the neighboring mobile devices. A response containing location information may be received from another mobile device equipped with a similar emergency locator component. Accordingly, this technology enables mobile devices to exchange location information by setting up an ad-hoc network. The location information can be included, for example, in an emergency phone call to an emergency services call center.Type: GrantFiled: November 6, 2009Date of Patent: August 13, 2013Assignee: Research In Motion LimitedInventors: Ahmad Mohammad Mohammad Kholaif, Sasan Adibi, Nayef Mendahawi
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Publication number: 20130058268Abstract: A wireless client device associated with an access point records at which time T after a transmission time of a most recent beacon frame it gained access to the wireless medium for transmission of an uplink packet to the access point. The wireless client device self-schedules target transmission times for one or more future uplink packets, where each of the target transmission times is T after a respective expected transmission time of a beacon frame. Rather than immediately attempting to gain access to the wireless medium when it determines that another uplink packet is ready for transmission, the wireless client device waits until shortly before its next upcoming target transmission time to make the attempt. Implementation in wireless client devices that are attempting to transmit uplink packets to the same access point may prolong the amount of time they can remain in a doze state, potentially reducing their power consumption.Type: ApplicationFiled: September 4, 2012Publication date: March 7, 2013Applicant: RESEARCH IN MOTION LIMITEDInventor: Ahmad Mohammad Mohammad Kholaif
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Patent number: 8385988Abstract: A system and method of reducing the WLAN power consumption and limiting battery drain of a mobile communications device is provided. The mechanism continuously monitors for changes in the WLAN and cellular signal strength and modifies the WLAN profile scanning activity accordingly. By monitoring for changes, transitions can be detected which indicate the location of the mobile device (i.e., indoor or outdoor). An increase in cellular signal strength and a decrease in WLAN signal strength indicates the user is transitioning outdoors where WLAN coverage may be limited. To reduce battery power consumption, background scanning is suspended or its frequency significantly lowered. Moving indoors is indicated by a decrease in cellular signal strength and an increase in WLAN signal strength. Background/Connectivity scanning frequency is increased to provide shorter time-to-connect to WLAN Networks for the user within the WLAN coverage area.Type: GrantFiled: May 2, 2012Date of Patent: February 26, 2013Assignee: Research In Motion LimitedInventors: Krishna Kumar Bakthavathsalu, Ion Barbu, Nayef Fawaz Mendahawi, Ahmad Mohammad Mohammad Kholaif
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Publication number: 20120264426Abstract: Techniques for efficient scanning for WLANs based on mobile device velocity are described. In one illustrative example, a mobile device identifies whether its velocity is less than or greater than a threshold value. While it is identified that the velocity of the mobile device is less than the threshold value, the mobile device scans to search for one or more WLANs identified in a first subset of WLAN profiles (e.g. “stationary” WLANs). While it is identified that the velocity of the mobile device is greater than the threshold value, the mobile device scans to search for the one or more WLANs identified in a second subset of WLAN profiles (e.g. “mobile” WLANs). Advantageously, a suitable WLAN may be more efficiently identified with use of a technique which reduces power consumption of the mobile device.Type: ApplicationFiled: April 15, 2011Publication date: October 18, 2012Applicant: RESEARCH IN MOTION LIMITEDInventors: Ahmad Mohammad Mohammad Kholaif, Rudy Eugene Rawlins
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Publication number: 20120257536Abstract: A target access point is selected from the results of a discovery scan so that a mobile station can attempt a connection with the target access point. The mobile station determines whether the target access point belongs to a small office/home office (SOHO)-type wireless local area network (WLAN) deployment or to a corporate/enterprise-type WLAN deployment. The mobile station then configures itself according to the determination of the type of WLAN deployment to which the target access point belongs.Type: ApplicationFiled: April 8, 2011Publication date: October 11, 2012Applicant: RESEARCH IN MOTION LIMITEDInventors: Ahmad Mohammad Mohammad Kholaif, Nayef Fawaz Mendahawi, Ion Barbu, Krishna Kumar Bakthavathsalu
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Publication number: 20120230304Abstract: A method for network access and a mobile station configured for the same is described. In one embodiment, there is provided a method for network access on a mobile station comprising: scanning for Wi-Fi networks; receiving responses from available wireless access points (APs) of the Wi-Fi networks; selecting a Wi-Fi network in accordance with past connectivity data associated with the Wi-Fi networks of the available APs; and attempting to connect to the selected Wi-Fi network.Type: ApplicationFiled: March 8, 2011Publication date: September 13, 2012Applicant: RESEARCH IN MOTION LIMITEDInventors: Ion Barbu, Krishna Kumar Bakthavathsalu, Ahmad Mohammad Mohammad Kholaif, Nayef Fawaz Mendahawi
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Publication number: 20120230305Abstract: A method for network access and a mobile station configured for the same is described. In one embodiment, there is provided a method for Wi-Fi network access on a mobile station comprising: scanning for wireless access points (APs) of a Wi-Fi network; receiving responses from available APs of the Wi-Fi network; selecting an AP in accordance with past connectivity data associated with the available APs; and attempting to connect or switch to the Wi-Fi network using the selected AP.Type: ApplicationFiled: March 8, 2011Publication date: September 13, 2012Applicant: RESEARCH IN MOTION LIMITEDInventors: Ion Barbu, Krishna Kumar Bakthavathsalu, Ahmad Mohammad Mohammad Kholaif, Nayef Fawaz Mendahawi
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Methods And Apparatus For Use In Controlling An Access Point Mode Of Operation For A Mobile Terminal
Publication number: 20120188991Abstract: Techniques for use in controlling an access point mode of operation of a mobile terminal are described. Initially, the mobile terminal operates in the access point mode of operation for communication with one or more other mobile terminals. While operating in the access point mode, the mobile terminal receives, from the one or more other mobile terminals, network information comprising one or more network identifiers which identify one or more wireless networks within coverage of the one or more other mobile terminals. The mobile terminal disables the access point mode of operation in response to identifying that at least one of the received network identifiers corresponds to a predetermined wireless network or predetermined type of wireless network. In one example, the mobile terminal is operative in accordance with IEEE 802.11, the received network identifiers comprise service set identifiers (SSIDs), and the predetermined wireless network is an enterprise network.Type: ApplicationFiled: January 21, 2011Publication date: July 26, 2012Applicant: RESEARCH IN MOTION LIMITEDInventors: Ahmad Mohammad Mohammad Kholaif, Rudy Eugene Rawlins -
Publication number: 20120127075Abstract: A portable electronic device includes a first segment including a first display and a second segment coupled to the first segment. The second segment includes a first input device on a first side of the second segment and a second display on a second side of the second segment. The second segment is rotatable relative to the first segment between a first orientation in which the first display is adjacent to the first input device, and a second orientation in which the first display is adjacent to the second display such that information is displayed continuously from the first display onto the second display.Type: ApplicationFiled: November 19, 2010Publication date: May 24, 2012Applicant: RESEARCH IN MOTION LIMITEDInventor: Ahmad Mohammad, Mohammad KHOLAIF
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Publication number: 20110111726Abstract: An emergency locator component for a mobile communication device enables the mobile communication device to obtain location information from other neighbouring mobile devices in the event that the mobile communication device is unable to determine its own location. The mobile communication device employs a short-range radiofrequency transceiver to broadcast a request for location information to the neighbouring mobile devices. A response containing location information may be received from another mobile device equipped with a similar emergency locator component. Accordingly, this technology enables mobile devices to exchange location information by setting up an ad-hoc network. The location information can be included, for example, in an emergency phone call to an emergency services call center.Type: ApplicationFiled: November 6, 2009Publication date: May 12, 2011Applicant: RESEARCH IN MOTION LIMITEDInventors: Ahmad Mohammad Mohammad Kholaif, Sasan Adibi, Nayef Mendahawi
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Publication number: 20100260051Abstract: A method is presented for adapting the packet size for VoIP communications, determined on-the-fly by the total network delay inherent at the time of packet transmission. If network delays are small relative to the maximum permissible latency for VoIP communications, the payload size per packet may be increased to maximize efficiency for the transmitted call. Alternatively, if network delays are large, the payload size per packet may be decreased in order to assure that the perceived quality of the transmitted call is acceptable.Type: ApplicationFiled: June 14, 2010Publication date: October 14, 2010Applicant: MCMASTER UNIVERSITYInventors: Terence Douglas Todd, Ahmad Mohammad Mohammad Kholaif