Patents by Inventor William Plumb
William Plumb 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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Patent number: 9232443Abstract: A wireless device having a central control entity that coordinates multiple radio transceivers co-located within the same device platform to mitigate coexistence interference. The wireless device comprises an LTE transceiver, a WiFi transceiver, a BT transceiver, or a GNSS receiver. In one embodiment, the central control entity receives radio signal information from the transceivers and determines control information. The control information is used to trigger FDM solution such that the transceivers operate in designated frequency channels to mitigate co-existence interference. In another embodiment, the central control entity receives traffic and scheduling information from the transceivers and determines control information. The control information is used to trigger TDM solution such that the transceivers are scheduled for transmitting or receiving radio signals over specific time duration to mitigate co-existence interference.Type: GrantFiled: March 7, 2014Date of Patent: January 5, 2016Assignee: MEDIATEK INC.Inventors: I-Kang Fu, Li-Chun Ko, Chi-Chen Lee, Huanchun Ye, Hong-Kai Hsu, William Plumb
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Patent number: 9220046Abstract: Various methods for wireless communication in a device with co-existed/co-located radios are provided. Multiple communication radio transceivers are co-existed/co-located in a user equipment (UE) having in-device coexistence (IDC) capability, which may result in IDC interference. For example, the UE is equipped with both LTE radio and some ISM band applications such as WiFi and Bluetooth modules. In a first method, the network identifies IDC capability by UE identification (e.g., UE ID). In a second method, the UE intentionally performs cell selection or reselection to cells in non-ISM frequency bands. In a third method, the UE signals the existence of ISM band applications via capability negotiation. In a fourth method, the UE signals the activation of ISM band applications by signaling messages (e.g., RRC message or MAC CE). Under the various methods, the UE and its serving eNB can apply FDM or TDM solutions to mitigate the IDC interference.Type: GrantFiled: September 1, 2014Date of Patent: December 22, 2015Assignee: MEDIATEK INC.Inventors: Yih-Shen Chen, Chia-Chun Hsu, William Plumb, Michael Roberts
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Patent number: 9203574Abstract: A method of UE RSRQ measurement precaution for interference coordination is provided. The UE receives radio signals of a neighbor cell under measurement. The neighbor cell applies a TDM silencing pattern for inter-cell interference coordination (TDM ICIC). The UE determines a measurement pattern that includes multiple subframes. The UE performs RSRQ measurements of the cell over multiple subframes and obtains multiple RSRQ measurement samples. The UE derives RSRQ measurement result by estimating the multiple RSRQ samples and applying a weighted average. RSRQ samples estimated to be more applicable are taken into account to more extent (e.g., applied with more weight), and/or RSRQ samples estimated to be less applicable are taken into account to less extent (e.g., applied with less weight, or discarded with zero weight). With UE precaution, a more predictable RSRQ measurement result is produced.Type: GrantFiled: September 8, 2014Date of Patent: December 1, 2015Assignee: MEDIATEK INC.Inventors: Per Johan Mikael Johansson, William Plumb, Yih-Shen Chen
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Publication number: 20150334620Abstract: A method of implicit signaling to support In-Device coexistence interference avoidance is provided. A UE sends an IDC interference indication to an eNB. The indication indicates that a serving frequency becomes unusable due to a coexistence interference problem. The indication does not explicitly indicate a frequency index or a frequency location of the unusable serving frequency. The eNB determines the serving frequency as unusable in an implicit manner. The eNB also determines an implied unusable frequency region based on the received IDC indication. The implied unusable frequency region is between the serving frequency and the ISM band. In one advantageous aspect, the eNB configures a condition for the UE, such that the UE is refrained from sending IDC interference indications unless the condition is satisfied.Type: ApplicationFiled: June 29, 2015Publication date: November 19, 2015Inventors: I-Kang Fu, Yih-Shen Chen, William Plumb, Per Johan Mikael Johansson
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Publication number: 20150302867Abstract: Various embodiments relating to detecting a conversation during presentation of content on a computing device, and taking one or more actions in response to detecting the conversation, are disclosed. In one example, an audio data stream is received from one or more sensors, a conversation between a first user and a second user is detected based on the audio data stream, and presentation of a digital content item is modified by the computing device in response to detecting the conversation.Type: ApplicationFiled: April 17, 2014Publication date: October 22, 2015Inventors: Arthur Charles Tomlin, Jonathan Paulovich, Evan Michael Keibler, Jason Scott, Cameron Brown, Jonathan William Plumb
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Patent number: 9167447Abstract: A method of failure event reporting for initial connection setup failure is proposed. In one embodiment, a UE first camps in RRC_IDLE mode in a cell served by a base station. The UE then detects a connection setup failure when performing a random access channel (RACH) procedure with the base station in an RRC connection attempt. The UE records a failure event report when the RACH procedure fails. Later, the UE transmits the failure event report to the network in RRC_CONNECTED mode. The failure event report comprises information that refers to the earlier RRC connection attempt. The failure event report also comprises available location information or available mobility measurements at the time the initial connection setup failure occurs. Based on the failure event report, the network can adopt corrective actions accordingly to mitigate the failure.Type: GrantFiled: February 28, 2013Date of Patent: October 20, 2015Assignee: MEDIATEK INC.Inventors: Per Johan Mikael Johansson, Shiang-Jiun Lin, Yih-Shen Chen, William Plumb
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Publication number: 20150245407Abstract: An enhanced connection recovery upon lost RRC connection due to radio link failure (RLF) or handover failure (HOF) is proposed. A UE first establishes an RRC connection in a source cell in a mobile communication network. Later on, the UE detects a failure event and starts an RRC reestablishment procedure in a target cell to restore the RRC connection. In a first novel aspect, a fast RLF process is applied to reduce the outage time in the serving cell. In a second novel aspect, an enhanced cell selection mechanism based on cell prioritization information is applied to reduce the outage time in the target cell. In one embodiment, multi-RAT registration is used to steer cell selection.Type: ApplicationFiled: May 8, 2015Publication date: August 27, 2015Inventors: Per Johan Mikael Johansson, Yih-Shen Chen, Tze-Ping Low, William Plumb
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Publication number: 20150245406Abstract: An enhanced connection recovery upon lost RRC connection due to radio link failure (RLF) or handover failure (HOF) is proposed. A UE first establishes an RRC connection in a source cell in a mobile communication network. Later on, the UE detects a failure event and starts an RRC reestablishment procedure in a target cell to restore the RRC connection. In a first novel aspect, a fast NAS recovery process is applied to reduce the outage time in the target cell. In a second novel aspect, context fetching is used to reduce the outage time in the target cell. In a third novel aspect, a loss-less reestablishment procedure is proposed to reduce data loss during the connection recovery.Type: ApplicationFiled: May 12, 2015Publication date: August 27, 2015Inventors: Per Johan Mikael Johansson, Yih-Shen Chen, Tze-Ping Low, William Plumb
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Publication number: 20150245405Abstract: An enhanced connection recovery upon lost RRC connection due to radio link failure (RLF) or handover failure (HOF) is proposed. A UE first establishes an RRC connection in a source cell in a mobile communication network. Later on, the UE detects a failure event and starts an RRC reestablishment procedure in a target cell to restore the RRC connection. In a first novel aspect, a fast NAS recovery process is applied to reduce the outage time in the target cell. In a second novel aspect, context fetching is used to reduce the outage time in the target cell. In a third novel aspect, a loss-less reestablishment procedure is proposed to reduce data loss during the connection recovery.Type: ApplicationFiled: May 12, 2015Publication date: August 27, 2015Inventors: Per Johan Mikael Johansson, Yih-Shen Chen, Tze-Ping Low, William Plumb
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Patent number: 9088924Abstract: A method of implicit signaling to support In-Device coexistence interference avoidance is provided. A UE sends an IDC interference indication to an eNB. The indication indicates that a serving frequency becomes unusable due to a coexistence interference problem. The indication does not explicitly indicate a frequency index or a frequency location of the unusable serving frequency. The eNB determines the serving frequency as unusable in an implicit manner. The eNB also determines an implied unusable frequency region based on the received IDC indication. The implied unusable frequency region is between the serving frequency and the ISM band. In one advantageous aspect, the eNB configures a condition for the UE, such that the UE is refrained from sending IDC interference indications unless the condition is satisfied.Type: GrantFiled: March 30, 2012Date of Patent: July 21, 2015Assignee: MEDIATEK INC.Inventors: I-Kang Fu, Yih-Shen Chen, William Plumb, Per Johan Mikael Johansson
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Patent number: 9055560Abstract: An enhanced connection recovery upon lost RRC connection due to radio link failure (RLF) or handover failure (HOF) is proposed. A UE first establishes an RRC connection in a source cell in a mobile communication network. Later on, the UE detects a failure event and starts an RRC reestablishment procedure in a target cell to restore the RRC connection. In a first novel aspect, a fast NAS recovery process is applied to reduce the outage time in the target cell. In a second novel aspect, context fetching is used to reduce the outage time in the target cell. In a third novel aspect, a loss-less reestablishment procedure is proposed to reduce data loss during the connection recovery.Type: GrantFiled: January 17, 2013Date of Patent: June 9, 2015Assignee: MEDIATEK INC.Inventors: Per Johan Mikael Johansson, Yih-Shen Chen, Tze-Ping Low, William Plumb
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Patent number: 9049698Abstract: An enhanced connection recovery upon lost RRC connection due to radio link failure (RLF) or handover failure (HOF) is proposed. A UE first establishes an RRC connection in a source cell in a mobile communication network. Later on, the UE detects a failure event and starts an RRC reestablishment procedure in a target cell to restore the RRC connection. In a first novel aspect, a fast RLF process is applied to reduce the outage time in the serving cell. In a second novel aspect, an enhanced cell selection mechanism based on cell prioritization information is applied to reduce the outage time in the target cell. In one embodiment, multi-RAT registration is used to steer cell selection.Type: GrantFiled: January 17, 2013Date of Patent: June 2, 2015Assignee: MEDIATEK INC.Inventors: Per Johan Mikael Johansson, Yih-Shen Chen, Tze-Ping Low, William Plumb
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Publication number: 20150091523Abstract: A wireless charging system that includes in-band communication includes: a source device, including: at least a transmitter coil for providing a wireless charging power which is modulated according to a reflected impedance of at least a target device; and at least the target device, oriented on and magnetically coupled to the source device, for receiving the charging power. The target device includes: a receiver coil, loosely coupled to the transmitter coil, for receiving the charging power; a variable resistor loading the receiver coil; and a power detection and modulation circuit, for determining a size of the charging power, and providing a modulation control signal to the variable resistor according to the size of the charging power, for varying the resistance of the variable resistor in order to control an impedance of the target device which will be reflected at the source device.Type: ApplicationFiled: September 30, 2014Publication date: April 2, 2015Inventors: Anand Satyamoorthy, Patrick Stanley Riehl, William Plumb
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Publication number: 20150093989Abstract: A variable gain circuit used in an in-band communication system is provided that includes a current sense pickup that is coupled to the output of a DC power source that senses current from the DC power source and provides a first output signal. A variable controlled amplifier structure, that is coupled to the DC power source, receives the first output signal and provides a specified amount of gain to the first output signal so as to produce a second output signal. A digital signal is produced using the second output having a selected frequency bandwidth.Type: ApplicationFiled: October 2, 2014Publication date: April 2, 2015Inventors: William Plumb, Anand Satyamoorthy, Patrick Stanley Riehl
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Publication number: 20150023200Abstract: A method of UE RSRQ measurement precaution for interference coordination is provided. The UE receives radio signals of a neighbor cell under measurement. The neighbor cell applies a TDM silencing pattern for inter-cell interference coordination (TDM ICIC). The UE determines a measurement pattern that includes multiple subframes. The UE performs RSRQ measurements of the cell over multiple subframes and obtains multiple RSRQ measurement samples. The UE derives RSRQ measurement result by estimating the multiple RSRQ samples and applying a weighted average. RSRQ samples estimated to be more applicable are taken into account to more extent (e.g., applied with more weight), and/or RSRQ samples estimated to be less applicable are taken into account to less extent (e.g., applied with less weight, or discarded with zero weight). With UE precaution, a more predictable RSRQ measurement result is produced.Type: ApplicationFiled: September 8, 2014Publication date: January 22, 2015Inventors: Per Johan Mikael Johansson, William Plumb, Yih-Shen Chen
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Publication number: 20150009850Abstract: Various methods for wireless communication in a device with co-existed/co-located radios are provided. Multiple communication radio transceivers are coexisted/co-located in a user equipment (UE) having in-device coexistence (IDC) capability, which may result in IDC interference. For example, the UE is equipped with both LTE radio and some ISM band applications such as WiFi and Bluetooth modules. In a first method, the network identifies IDC capability by UE identification (e.g., UE ID). In a second method, the UE intentionally performs cell selection or reselection to cells in non-ISM frequency bands. In a third method, the UE signals the existence of ISM band applications via capability negotiation. In a fourth method, the UE signals the activation of ISM band applications by signaling messages (e.g., RRC message or MAC CE). Under the various methods, the UE and its serving eNB can apply FDM or TDM solutions to mitigate the IDC interference.Type: ApplicationFiled: September 1, 2014Publication date: January 8, 2015Inventors: Yih-Shen Chen, Chia-Chun Hsu, William Plumb, Michael Roberts
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Publication number: 20140337023Abstract: Embodiments that relate to converting audio inputs from an environment into text are disclosed. For example, in one disclosed embodiment a speech conversion program receives audio inputs from a microphone array of a head-mounted display device. Image data is captured from the environment, and one or more possible faces are detected from image data. Eye-tracking data is used to determine a target face on which a user is focused. A beamforming technique is applied to at least a portion of the audio inputs to identify target audio inputs that are associated with the target face. The target audio inputs are converted into text that is displayed via a transparent display of the head-mounted display device.Type: ApplicationFiled: May 10, 2013Publication date: November 13, 2014Inventors: Daniel McCulloch, Abby Lin Lee, Adam Benjamin Smith-Kipnis, Jonathan William Plumb, Alexandre David, Michael O. Hale, Jeff Cole, Hendrik Mark Langerak
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Publication number: 20140314170Abstract: A wireless charging in-band communication system includes a transmitter module that formats a message using CRC calculation and attaches the results of the CRC calculation to the message for message error detection. The transmitter includes channel encoding for message error correction. A modulation module performs biphase modulation for DC balanced signals and impedance switching to change reflected impedance seen by the source. A synchronization module prepending the message with a synchronization sequence having Golay complementary codes. Moreover, the in-band communication includes a receiver module that receives the message from the transmitter module. The receiver module includes an impedance sensing circuit to detect changes in the reflected impedance of the transmitter module. The receiver module includes a front end filter used for pulse shaping and noise rejection.Type: ApplicationFiled: October 25, 2013Publication date: October 23, 2014Inventors: William Plumb, Zhen Wang, Zoran Zvonar, Patrick Stanley Riehl, Anand Satyamoorthy, Philip Frank Tustin
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Patent number: 8854998Abstract: A method of UE RSRQ measurement precaution for interference coordination is provided. The UE receives radio signals of a neighbor cell under measurement. The neighbor cell applies a TDM silencing pattern for inter-cell interference coordination (TDM ICIC). The UE determines a measurement pattern that includes multiple subframes. The UE performs RSRQ measurements of the cell over multiple subframes and obtains multiple RSRQ measurement samples. The UE derives RSRQ measurement result by estimating the multiple RSRQ samples and applying a weighted average. RSRQ samples estimated to be more applicable are taken into account to more extent (e.g., applied with more weight), and/or RSRQ samples estimated to be less applicable are taken into account to less extent (e.g., applied with less weight, or discarded with zero weight). With UE precaution, a more predictable RSRQ measurement result is produced.Type: GrantFiled: February 10, 2012Date of Patent: October 7, 2014Assignee: Mediatek Inc.Inventors: Per Johan Mikael Johansson, William Plumb, Yih-Shen Chen
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Patent number: 8842546Abstract: Various methods for wireless communication in a device with co-existed/co-located radios are provided. Multiple communication radio transceivers are co-existed/co-located in a user equipment (UE) having in-device coexistence (IDC) capability, which may result in IDC interference. For example, the UE is equipped with both LTE radio and some ISM band applications such as WiFi and Bluetooth modules. In a first method, the network identifies IDC capability by UE identification (e.g., UE ID). In a second method, the UE intentionally performs cell selection or reselection to cells in non-ISM frequency bands. In a third method, the UE signals the existence of ISM band applications via capability negotiation. In a fourth method, the UE signals the activation of ISM band applications by signaling messages (e.g., RRC message or MAC CE). Under the various methods, the UE and its serving eNB can apply FDM or TDM solutions to mitigate the IDC interference.Type: GrantFiled: July 15, 2011Date of Patent: September 23, 2014Assignee: Mediatek Inc.Inventors: Yih-Shen Chen, Chia-Chun Hsu, William Plumb, Michael Roberts