El-Hassan
Fadi El-Hassan, Ottawa CA
Patent application number | Description | Published |
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20100057851 | RECONFIGURABLE MULTIMEDIA COLLABORATION SYSTEM - A system for multimedia communications implemented with reconfigurable technology is disclosed. The system includes: a SIP engine implemented in hardware that executes functions defined by Session Initiation Protocol (SIP); a XML engine implemented in hardware that executes functions defined by Extensible Markup Language (XML); and an interface that coordinates functions executed by the SIP engine and the XML engine. A standard set of features are provided for robust communications while permitting the addition of more features to enhance the multimedia communications experience. For example, audio and video communication, instant messaging and presence can be provided by the system while P2P and IP Multimedia Systems (IMS) can be provided through expansion. Reconfigurable technology allows the system to achieve optimal performance in performing various tasks. | 03-04-2010 |
Wassim El-Hassan, San Jose, CA US
Patent application number | Description | Published |
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20110090799 | SYSTEM AND METHOD FOR TESTING MULTIPLE DIGITAL SIGNAL TRANSCEIVERS IN PARALLEL - A method for contemporaneously testing multiple digital data packet transceivers using predefined UL test sequences of synchronized data packets by pre-configuring test measurements, and multiplexing and interleaving portions of the data packets from the devices under test (DUTs). | 04-21-2011 |
20110237199 | METHODS FOR CALIBRATING RADIO-FREQUENCY RECEIVERS USING CODE DIVISION MULTIPLE ACCESS TEST EQUIPMENT - Wireless test equipment may be used to perform over-the-air testing of user equipment. The user equipment may contain an antenna and a receiver. The wireless test equipment may contain a call box that performs network-level testing by sending and receiving protocol-compliant network messages. The call box may transmit a radio-frequency test signal at a predetermined power. The antenna in the user equipment may receive the radio-frequency test signal and may provide the received radio-frequency test signal to the input of the receiver. The call box may send a network message such as a code-division-multiple-access intercode handover command to the user equipment to direct the user equipment to measure the received radio-frequency test signal power at the input of the receiver. The measured power may be transmitted to the call box as part of a pilot measurement message indicator, using an intercode handover command, or using other network messages. | 09-29-2011 |
20120123723 | METHODS FOR MITIGATING INTERACTIONS AMONG WIRELESS DEVICES IN A WIRELESS TEST SYSTEM - A test station may include a test host, a test unit, and a test chamber. Multiple devices under test (DUTs) may be placed in the test chamber during wireless testing. Radio-frequency signals may be conveyed between the test unit and the multiple DUTs using a conducted arrangement through a splitter-combiner circuit or using a radiated arrangement through a test antenna in the test chamber. The multiple DUTs may be synced to the test unit one DUT at a time (in series) or in parallel. The test host may direct the test unit to broadcast downlink signals at a given channel. The test host my direct a selected DUT to transmit uplink signals at the given channel or at a selected channel that is different from the given channel. The test unit may be used to perform desired measurement on the uplink signals transmitted from the selected DUT. | 05-17-2012 |
20130049786 | NON-SYNCHRONIZED RADIO-FREQUENCY TESTING - A device under test (DUT) may be tested using a test station having a test host, a non-signaling tester, and a test cell. During testing, the DUT may be placed within the test cell, and the DUT may be coupled to the test host and the tester. In one suitable arrangement, the DUT may be loaded with a predetermined test sequence. The predetermined test sequence may configure the DUT to transmit test signals using different network access technologies without synchronizing with the tester. The tester may receive corresponding test signals and perform desired radio-frequency measurements. In another suitable arrangement, the tester may be loaded with the predetermined test sequence. The predetermined test sequence may configure the tester to generate test signals using different network access technologies without establishing a protocol-compliant data link with the DUT. The DUT may receive corresponding test signals and compute receive signal quality. | 02-28-2013 |
Wassim El-Hassan, Koebenhavn N DK
Patent application number | Description | Published |
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20100007355 | METHOD FOR TESTING RADIO FREQUENCY (RF) RECEIVER TO PROVIDE POWER CORRECTION DATA - A method for testing a radio frequency (RF) receiver as a device under test (DUT) with one or more test instruments to provide a plurality of relative power correction factors, a plurality of received signal strength indication (RSSI) calibration factors, or both. | 01-14-2010 |
Wassim El-Hassan, Cupertino, CA US
Patent application number | Description | Published |
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20140073275 | Method for Determining Optimum Power Amplifier Configurations Using List Mode Testing - A calibration system for calibrating wireless circuitry in an electronic device is provided. The test system may include test equipment, a computer, and a device under test (DUT). The test equipment may measure the output power of the DUT. The DUT may include power amplifier circuitry that is provided with a power supply voltage supplied by power supply circuitry. A list mode sequence of commands may be provided to the DUT and the test equipment to calibrate the power amplifier circuitry. The list of commands may be processed by the DUT to produce radio-frequency signals. The list of commands may be simultaneously processed by the test equipment to perform measurements on the radio-frequency signals. The computer may retrieve measurement data from the test equipment after testing is complete. The computer may subsequently determine calibrated control settings for the DUT that reduce power consumption while ensuring satisfactory adjacent channel leakage performance. | 03-13-2014 |
20140119421 | Testing Radio-Frequency Performance of Wireless Communications Circuitry Using Fast Fourier Transforms - A test system for testing wireless circuitry in an electronic device is provided. The test system may include a test host and a tester. The tester may provide radio-frequency test signals to a device under test (DUT). The DUT may include radio-frequency decoding circuitry that processes the test signals using a communications protocol and digital demodulator circuitry that processes the test signals without using the communications protocol. The digital demodulator circuitry may include transformation circuitry that performs fast Fourier transforms on the test signals to create frequency-domain performance data. The test host may compute a noise floor and signal-to-noise ratio based on the frequency-domain performance data. The test host may compare the computed noise floor and signal-to-noise ratio to predetermined thresholds to characterize the radio-frequency performance of the wireless circuitry. | 05-01-2014 |