Patents by Inventor Saad Ahmad

Saad Ahmad 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: 20190116229
    Abstract: A wireless transmit/receive unit (WTRU) may establish one or more protocol data unit (PDU) sessions via a radio access network (RAN) node. The WTRU may transition to an inactive state. The WTRU may send a connection resume message to a RAN node that indicates a request to resume the established plurality of PDU sessions via the RAN node. The WTRU may receive a message from the RAN node. For example, the RAN node may send a message indicating a subset of the plurality of PDU sessions that are available upon resuming a connection with the RAN node. The WTRU may deactivate at least one established PDU session of the plurality of PDU sessions based on the received message from the RAN node that indicates at least one established PDU session not being included in the subset of the plurality of PDU sessions that are available.
    Type: Application
    Filed: October 1, 2018
    Publication date: April 18, 2019
    Applicant: IDAC HOLDINGS, INC.
    Inventors: Xiaoyan Shi, Guanzhou Wang, Saad Ahmad
  • Patent number: 10250274
    Abstract: A sample and hold system, for capturing and reading at least one input signal. The system comprises a readout device, a controller, an array of segments comprising a plurality of unit cells and a dummy unit cell, and segment switches between the segments and the readout device. The controller is adapted for controlling the system such that: during an acquisition phase a trace of samples is taken from the input signal and held in the unit cells; during a readout phase the samples in the unit cells or in the dummy unit cells of a segment are read out by readout device; after opening or closing the segment switches the dummy unit cell, is the first cell which is read out by the readout device.
    Type: Grant
    Filed: February 23, 2018
    Date of Patent: April 2, 2019
    Assignee: MELEXIS TECHNOLOGIES NV
    Inventors: Saad Ahmad, Volodymyr Seliuchenko, Sharath Patil, Darrell Livezey, Marcelo Mizuki
  • Patent number: 10251047
    Abstract: Techniques may be used for restricted direct discovery in proximity services (ProSe). A ProSe function may receive from a discovery wireless transmit/receive unit (WTRU) a restricted ProSe Application identity (ID) of an application located at the discoverer WTRU requesting ProSe discovery. The ProSe function may derive a first and second ProSe codes for the discoveree WTRU and discoverer WTRU, and provide the ProSe codes to the discoverer and/or discoveree WTRUs. A ProSe application server may receive a revocation message from an announcing WTRU indicating a revoked WTRU. The ProSe application server may provide a ProSe discovery WTRU ID for the revoked WTRU to a ProSe Function. The ProSe function may instruct the announcing WTRU to stop announcing a ProSe code known by the revoked WTRU, and may provide a new ProSe code to at least one WTRU authorized to discover the announcing WTRU.
    Type: Grant
    Filed: October 2, 2015
    Date of Patent: April 2, 2019
    Assignee: INTERDIGITAL PATENT HOLDINGS, INC.
    Inventors: Dimitrios Karampatsis, Mahmoud Watfa, Ulises Olvera-Hernandez, Saad Ahmad
  • Patent number: 10251118
    Abstract: A wireless transmit/receive unit (WTRU) may receive, at a radio resource control (RRC) component from a non-access stratum (NAS) component, an extended service request (ESR). The ESR may indicate a low priority for the WTRU and the ESR may be related to a high priority application. The WTRU may transmit, to a wireless network, a RRC connection request with an establishment cause of mobile-originated (MO) data based on the ESR.
    Type: Grant
    Filed: December 31, 2015
    Date of Patent: April 2, 2019
    Assignee: InterDigital Patent Holdings, Inc.
    Inventors: Saad Ahmad, Amir Helmy
  • Publication number: 20190098559
    Abstract: In one aspect, a method of cell processing is disclosed, which includes disposing a plurality of cells on a substrate across which a plurality of projections are distributed and an electrically conductive layer at least partially coating said projections, exposing the cells to a cargo to be internalized by the cells, irradiating the substrate surface (and in particular the projections) with one or more laser pulses having a pulse width in a range of about 1 ns to about 1000 ns so as to facilitate uptake of the cargo by at least a portion of the cells (e.g., the cells positioned in the vicinity of the projections (e.g., within hundreds of nanometer (such as less than 100 nm) of the projections)). In some embodiments, the laser pulses have a pulse width in a range of about 10 ns to about 500 ns, e.g., in a range of about 5 ns to about 50 ns.
    Type: Application
    Filed: November 9, 2015
    Publication date: March 28, 2019
    Applicant: INTERDIGITAL PATENT HOLDINGS, INC.
    Inventors: Samian Kaur, Amir Helmy, Dimitrios Karampatsis, Guanzhou Wang, Saad Ahmad, Mahmoud Watfa, Loic Canonne-Velasquez
  • Publication number: 20190098634
    Abstract: Techniques for congestion management in a communication network are contemplated. For example, a wireless transmit receive unit (WTRU) may include a Radio Resource Control (RRC) layer and a Non-Access Stratum (NAS) layer. The RRC layer may receive an indication for a service, for example from the NAS. The indication may be interpreted as a request for the particular service indicated. For example, the indicated service may correspond to at least one of: a mobile originated (MO) voice communication, a circuit switched fallback (CSFB) supplementary service (SS), or a MO short message service (SMS). The RRC layer may receive a signal from a network indicating that one or more services provided by the network are allowed. The RRC layer may send a connection request to the network for the service sought by the NAS if that service is one of the one or more services allowed.
    Type: Application
    Filed: November 21, 2018
    Publication date: March 28, 2019
    Applicant: InterDigital Patent Holdings, Inc.
    Inventors: Mahmoud Watfa, Pascal M. Adjakple, Saad Ahmad
  • Patent number: 10237812
    Abstract: Techniques for sending an aggregated beacon in a cognitive wireless network are disclosed. A beacon device may segment beacon information and send beacon segments via a plurality of channels simultaneously. A certain information elements of the beacon information may be included in each beacon segment. Each beacon segment may include channel information for other beacon segments that are transmitted simultaneously. Alternatively, a discovery beacon may be transmitted in addition to a regular beacon. The discovery beacon may include information indicating an operating channel on which the regular beacon is transmitted. The discovery beacon may be transmitted using a predetermined channel bandwidth, with a smaller beacon interval than the regular beacon, or in a frequency hopping fashion. The discovery beacon may be sent on a channel selected based on a regulatory class and corresponding channel information. The discovery beacon may be transmitted on a side channel.
    Type: Grant
    Filed: February 24, 2011
    Date of Patent: March 19, 2019
    Assignee: InterDigital Patent Holdings, Inc.
    Inventors: Saad Ahmad, Jean-Louis Gauvreau, Rocco DiGirolamo, Zinan Lin, Angelo A. Cuffaro, Zaid Al-Khatib, Joseph Murray, Alexander Reznik, Alpaslan Demir
  • Publication number: 20190082306
    Abstract: A communication method implemented on a 3rd Generation Partnership Project (3GPP) communication network includes providing an attachment between a group member of a communication group and a group application server, detecting a detachment between the group member and the group application server, and reestablishing the attachment by the 3GPP communication network. A Mobility Management Entity (MME) may provide the attachment. A Group Communication Service Enabler Application Server (GCSE AS) or a Multipoint Service (MuSe) functionality may detect the detachment. The attachment may be reestablished according to the MuSe functionality. A group communication bearer may have a first priority level for allocating resources to the group communication bearer, and a second priority level for allocating resources to the non-group communication bearer. The second priority level may be different from the first priority level.
    Type: Application
    Filed: November 9, 2018
    Publication date: March 14, 2019
    Inventors: Saad Ahmad, Guanzhou Wang, Li-Hsiang Sun, Mahmoud Watfa, Pascal Adjakple
  • Patent number: 10231216
    Abstract: Methods and apparatus are described for transmitting and receiving data by a wireless transmit/receive unit (WTRU) over the control plane. The methods may receive data without the use of an Internet Protocol (IP) address. In an example method, a WTRU may enter an evolved packet system (EPS) mobility management (EMM)-registered control plane only (CPO) state after receiving an attach accepted message for CPO operation, and enter an EMM-deregistered state after receiving a detach message, a tracking area update (TAU) reject message or an attach reject message. In another method, a WTRU may switch between operational modes that use an IP address and a user plane to transmit and receive data, and the CPO mode.
    Type: Grant
    Filed: June 19, 2017
    Date of Patent: March 12, 2019
    Assignee: InterDigital Patent Holdings, Inc.
    Inventors: Mahmoud Watfa, Ulises Olvera-Hernandez, Pascal M Adjakple, Kai Liu, Peter S Wang, Saad Ahmad, Behrouz Aghili
  • Patent number: 10212564
    Abstract: Systems, methods, and instrumentalities are disclosed for priority handling for ProSe Communications. A relay wireless transmit/receive unit (WTRU) may act as a relay between the network and the remote WTRU. The relay WTRU may receive a temporary mobile group identity (TMGI) request message from a remote WTRU. The TMGI request message may include a TMGI, a ProSe per packet priority level associated with the TMGI, etc. The relay WTRU may receive an evolved multimedia broadcast multicast service (eMBMS) data packet from a network. The eMBMS may be associated with the TMGI. The relay WTRU may apply the received ProSe per packet priority level associated with the TMGI to the received eMBMS data packet. The relay WTRU may relay the eMBMS data packet to the remote WTRU based on the ProSe per packet priority level. The relay WTRU may forward the eMBMS data packet to the remote WTRU via a PC5 interface.
    Type: Grant
    Filed: June 23, 2016
    Date of Patent: February 19, 2019
    Assignee: InterDigital Patent Holdings, Inc.
    Inventors: Mahmoud Watfa, Guanzhou Wang, Saad Ahmad, Amir Helmy, Ulises Olvera-Hernandez
  • Publication number: 20190037464
    Abstract: Coordinated P-GW change for SIPTO may be provided. A WTRU may send and/or receive one or more flows via a first PDN connection and via a first P-GW. The WTRU may send an indication to the network that at least one flow of the first PDN connection is available for SIPTO. The indication may include one or more SIPTO preferences. The WTRU may receive a message from a MME. The message may trigger establishment of a second PDN connection via a second P-GW. The WTRU may move, while maintaining the first PDN connection, the at least one flow from the first PDN connection to the second PDN connection. The WTRU may deactivate the first PDN connection when the one or more flows have been moved to the second PDN connection and/or when no information has been received via the first PDN connection after a predetermined duration.
    Type: Application
    Filed: September 28, 2018
    Publication date: January 31, 2019
    Applicant: IDAC Holdings, Inc.
    Inventors: Saad Ahmad, Li-Hsiang Sun
  • Publication number: 20190037409
    Abstract: A network control node (Main CTRL or CTRL N) may receive a service request by a WTRU, wherein the service information comprises one or more of a service class, a quality of service (QoS) requirement, or a mobility characteristic. The network control node may determine slice information associated with a plurality of network slices and may select at least a first network slice to serve the WTRU. The network control node may determine whether the network control node or another network control node should service the WTRU for accessing the first network slice. When the network control node determines that the another network control node should service the WTRU for accessing the first network slice, the network control node may send a request to the another network control node that indicates that the another network control node should service the WTRU for accessing the first network slice.
    Type: Application
    Filed: February 16, 2017
    Publication date: January 31, 2019
    Applicant: IDAC HOLDINGS, INC.
    Inventors: Guanzhou Wang, Mahmoud Watfa, Saad Ahmad
  • Publication number: 20190037488
    Abstract: A wireless transmit/receive unit (WTRU) is configured to receive at least three sets of parameters associated with power saving. A first set of the parameters is associated with an idle state. A second set of the parameters is associated with a connected state. A third set of the parameters is associated with not being in a connected state and remains registered with a network and maintains a packet data network (PDN) connection. The WTRU is configured to enter active times based on the third set of parameters on a condition that the WTRU is not in the connected state and remains registered with the network. During the active times, the WTRU is configured to monitor physical downlink control channels (PDCCHs) for paging messages.
    Type: Application
    Filed: October 1, 2018
    Publication date: January 31, 2019
    Applicant: INTERDIGITAL PATENT HOLDINGS, INC.
    Inventors: Guanzhou Wang, Saad Ahmad, Behrouz Aghili, Martino M. Freda, Mahmoud Watfa, Ulises Olvera-Hernandez, Pascal M. Adjakple
  • Publication number: 20190028943
    Abstract: A network may implement a method to support a mobility of a wireless transmit/receive unit (WTRU). The network or network functions may identify the WTRU that is associated with one or more capabilities and one or more mobility properties. The network or network functions may determine subscription information and network policy information for the WTRU. The network or network functions may select a mobility pattern for the WTRU based on the one or more capabilities and the one or more mobility properties associated with the WTRU, the subscription information, and the network policy information. The mobility pattern may be associated with a mobility parameter and a value corresponding to the mobility parameter.
    Type: Application
    Filed: January 13, 2017
    Publication date: January 24, 2019
    Applicant: IDAC HOLDINGS, INC.
    Inventors: Guanzhou Wang, Mahmoud Watfa, Saad Ahmad, Ulises Olvera-Hernandez
  • Patent number: 10182382
    Abstract: Small cell enhancement for dual connectivity operation and/or the impact of such enhancement for the support of the example LIPA/SIPTO architecture may be useful. The L-GW shown could be a collocated L-GW (e.g., with S-GW not shown) and/or a standalone L-GW with S-GW capabilities. Embodiments recognize the scenario of the SIPTO above RAN and/or SIPTO at local network, perhaps with standalone combined gateway. Embodiments contemplate that it may be useful to provide support of/for LIPA/SIPTO at a local network with a collocated gateway in a dual connectivity mode, among other scenarios. Embodiments also contemplate the usefulness for providing the capability of supporting the dual connectivity operation in multiple scenarios.
    Type: Grant
    Filed: March 13, 2015
    Date of Patent: January 15, 2019
    Assignee: InterDigital Patent Holdings, Inc.
    Inventors: Saad Ahmad, Guanzhou Wang, Li-Hsiang Sun, Amir Helmy
  • Publication number: 20190014530
    Abstract: Systems, methods, and instrumentalities are disclosed for enhancements to NAS Protocol to transmit user data over a signaling plane. A wireless transmit receive unit (WTRU) may send a first NAS message to a network device that may include a request to send user data via a control plane. The network device may establish the control plane for the WTRU. The control plane may be established without establishing a user plane connection. The network device may determine a maximum transmission rate for the WTRU to send user data via the control plane. The network device may send a second NAS message to the WTRU. The second NAS message may indicate that the control plane has been established for the WTRU and the maximum transmission rate.
    Type: Application
    Filed: January 5, 2017
    Publication date: January 10, 2019
    Applicant: INTERDIGITAL PATENT HOLDINGS, INC.
    Inventors: Behrouz Aghili, Saad Ahmad, Mahmoud Watfa
  • Patent number: 10178678
    Abstract: Techniques for congestion management in a communication network are contemplated. For example, a wireless transmit receive unit (WTRU) may include a Radio Resource Control (RRC) layer and a Non-Access Stratum (NAS) layer. The RRC layer may receive an indication for a service, for example from the NAS. The indication may be interpreted as a request for the particular service indicated. For example, the indicated service may correspond to at least one of: a mobile originated (MO) voice communication, a circuit switched fallback (CSFB) supplementary service (SS), or a MO short message service (SMS). The RRC layer may receive a signal from a network indicating that one or more services provided by the network are allowed. The RRC layer may send a connection request to the network for the service sought by the NAS if that service is one of the one or more services allowed.
    Type: Grant
    Filed: October 30, 2014
    Date of Patent: January 8, 2019
    Assignee: InterDigital Patent Holdings, Inc.
    Inventors: Mahmoud Watfa, Pascal M. Adjakple, Saad Ahmad
  • Publication number: 20180338276
    Abstract: In one aspect, a method of cell processing is disclosed, which includes disposing a plurality of cells on a substrate across which a plurality of projections are distributed and an electrically conductive layer at least partially coating said projections, exposing the cells to a cargo to be internalized by the cells, irradiating the substrate surface (and in particular the projections) with one or more laser pulses having a pulse width in a range of about 1 ns to about 1000 ns so as to facilitate uptake of the cargo by at least a portion of the cells (e.g., the cells positioned in the vicinity of the projections (e.g., within hundreds of nanometer (such as less than 100 nm) of the projections)). In some embodiments, the laser pulses have a pulse width in a range of about 10 ns to about 500 ns, e.g., in a range of about 5 ns to about 50 ns.
    Type: Application
    Filed: November 9, 2015
    Publication date: November 22, 2018
    Applicant: INTERDIGITAL PATENT HOLDINGS, INC.
    Inventors: Samian Kaur, Amir Helmy, Dimitrios Karampatsis, Guanzhou Wang, Saad Ahmad, Mahmoud Watfa, Loic Canonne-Velasquez
  • Patent number: 10136266
    Abstract: A communication method implemented on a 3rd Generation Partnership Project (3GPP) communication network includes providing an attachment between a group member of a communication group and a group application server, detecting a detachment between the group member and the group application server, and reestablishing the attachment by the 3GPP communication network. A Mobility Management Entity (MME) may provide the attachment. A Group Communication Service Enabler Application Server (GCSE AS) or a Multipoint Service (MuSe) functionality may detect the detachment. The attachment may be reestablished according to the MuSe functionality. A group communication bearer may have a first priority level for allocating resources to the group communication bearer, and a second priority level for allocating resources to the non-group communication bearer. The second priority level may be different from the first priority level.
    Type: Grant
    Filed: September 5, 2014
    Date of Patent: November 20, 2018
    Assignee: InterDigital Patent Holdings, Inc.
    Inventors: Saad Ahmad, Guanzhou Wang, Li-Hsiang Sun, Mahmoud Watfa, Pascal Adjakple
  • Patent number: 10117220
    Abstract: A method and apparatus for machine type communication (MTC) authentication and triggering may be performed by an MTC interworking function (MTC-IWF). On a condition an Internet protocol (IP) connection does not exist between a services capability server (SCS) and an MTC device, a device trigger message may be received by the MTC device over a Tsp interface. The device trigger message may include a cryptographic key and may have an associated level of urgency. The method may further comprise determining a level of network congestion and transmitting the device trigger, including the received cryptographic key, to the MTC device in accordance with the associated level of urgency. A report may be sent to the SCS, associated with the determined level of network congestion, to indicate either success or failure of the device triggering procedure. The received cryptographic key may be used to secure an IP connection.
    Type: Grant
    Filed: May 22, 2017
    Date of Patent: October 30, 2018
    Assignee: InterDigital Patent Holdings, Inc.
    Inventors: Peter S. Wang, Ulises Olvera-Hernandez, Behrouz Aghili, Pascal M. Adjakple, Kai Liu, Mahmoud Watfa, Saad Ahmad, Samian Kaur, Guanzhou Wang