Patents by Inventor Matthew L. Semersky
Matthew L. Semersky 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: 20170280421Abstract: This document describes multicast communication between wireless devices. A scheduling frame may be wirelessly transmitted by a wireless device. The scheduling frame may include a multicast address indicating a group of intended receiving devices for a payload frame. The scheduling frame may further include scheduling information indicating an order for the group of intended receiving devices to transmit acknowledgement information for the payload frame. A payload frame may also be wirelessly transmitted by the wireless device. The payload frame may include payload information intended for the group of intended receiving devices. Additionally, acknowledgement frames may be wirelessly received by the wireless device from at least a subset of the group of intended receiving devices. The acknowledgement frames may be received according to the order indicated in the scheduling information.Type: ApplicationFiled: June 9, 2017Publication date: September 28, 2017Inventors: Harish Ramamurthy, Kapil Chhabra, Matthew L. Semersky, Daniel R. Borges, Charles F. Dominguez
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Publication number: 20170237532Abstract: An electronic device communicates frames with an access point (AP) by receiving, from the AP, a frame header that includes information specifying a first set of tones of an OFDMA communication, the first set of tones associated with first resource block subchannels having a first bandwidth used by the AP to transmit a frame payload. The electronic device obtains a second set of tones associated with second resource block subchannels having a second bandwidth that differs from the first bandwidth, and receives the frame payload using the OFDMA communication, the second resource block subchannels, and the second set of tones. Alternatively, an electronic device dynamically switches a channel-access mode when communicating a frame with the AP depending on whether the communication includes a primary 20 MHz channel. In a technique, an MU-PPDU is communicated using a frame via a non-primary 20 MHz channel without using the primary 20 MHz channel.Type: ApplicationFiled: February 14, 2017Publication date: August 17, 2017Inventors: Guoqing LI, Oren SHANI, Matthew L. SEMERSKY, Ashok RANGANATH, Jarkko L. KNECKT, Christiaan A. HARTMAN, Yong LIU, Su Khiong YONG, Joonsuk KIM
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Publication number: 20170230860Abstract: A wireless local area network (WLAN) station (STA) reports, with a medium access control (MAC) frame, a buffer status of an urgent traffic identifier (TID) to a second STA. In some embodiments, the second STA is also an access point (AP). The delay in reporting is reduced by providing a buffer status report for the urgent TID in a data frame being transmitted to carry data for a current TID. The buffer status report, in some embodiments, provides the value of the urgent TID. In some embodiments, the buffer status report provides an indication of the amount of data in a buffer corresponding to the urgent TID. In some embodiments, the buffer status report is based on an aggregated measure of more than one buffer with data awaiting transmission. The transmission of the MAC frame, in some embodiments, is unsolicited.Type: ApplicationFiled: February 9, 2017Publication date: August 10, 2017Inventors: Guoqing LI, Christiaan A. HARTMAN, Oren SHANI, Matthew L. SEMERSKY, Joonsuk KIM, Jarkko KNECKT, Ashok RANGANATH, Yong LIU, Su Khiong YONG
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Publication number: 20170202015Abstract: An access point selects a channel access policy for an electronic device in a wireless local area network (WLAN). During operation, an interface circuit of the access point receives a channel access preference from the electronic device. The channel access preference includes: a multi-user trigger-based channel access technique, a single-user contention-based channel access technique, or both. The interface circuit selects the channel access policy for the electronic device based, at least in part, on the received channel access preference. The channel access policy can also be selected based at least in part on a communication performance metric associated with communication in the WLAN. The interface circuit communicates the selected channel access policy to the electronic device, which subsequently accesses a communication channel and communicates packets with the access point in accordance with the channel access policy.Type: ApplicationFiled: January 10, 2017Publication date: July 13, 2017Inventors: Guoqing LI, Christiaan A. HARTMAN, Ashok RANGANATH, Joonsuk KIM, Matthew L. SEMERSKY, Oren SHANI, Su Khiong YONG, Yong LIU
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Patent number: 9681418Abstract: This document describes multicast communication between wireless devices. A scheduling frame may be wirelessly transmitted by a wireless device. The scheduling frame may include a multicast address indicating a group of intended receiving devices for a payload frame. The scheduling frame may further include scheduling information indicating an order for the group of intended receiving devices to transmit acknowledgement information for the payload frame. A payload frame may also be wirelessly transmitted by the wireless device. The payload frame may include payload information intended for the group of intended receiving devices. Additionally, acknowledgement frames may be wirelessly received by the wireless device from at least a subset of the group of intended receiving devices. The acknowledgement frames may be received according to the order indicated in the scheduling information.Type: GrantFiled: November 25, 2013Date of Patent: June 13, 2017Assignee: Apple Inc.Inventors: Harish Ramamurthy, Kapil Chhabra, Matthew L. Semersky, Daniel R. Borges, Charles F. Dominguez
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Patent number: 9647489Abstract: Examples of the disclosure are directed to methods of managing power of various modules of an electronic device to prevent the voltage of the battery from falling to an undervoltage lockout (UVLO) threshold. In some examples, software operating on the electronic device or an associated electronic device (e.g., a paired electronic device) may assign power budgets to one or more modules, thereby preventing each module from drawing its maximum current capacity and causing the battery's voltage level to fall to the UVLO threshold. In some examples, a pre-UVLO threshold (i.e., a threshold higher than the UVLO threshold) may be used to modify the states of one or more modules to save power as the voltage of the battery approaches the UVLO threshold, but before the device must be fully powered off.Type: GrantFiled: July 29, 2015Date of Patent: May 9, 2017Assignee: Apple Inc.Inventors: Cyril De La Cropte De Chanterac, David A. Hardell, Matthew L. Semersky, Yehonatan Perez
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Publication number: 20170070418Abstract: Disclosed herein are system, method, and computer program product embodiments for selectively decoding a multicast subframe in a multi-user frame for a wireless communications protocol. Embodiments include transmitting a request frame including a multicast group address for a multicast group to an access point (AP). The AP can determine a multicast identifier for the multicast group based on the multicast group address in the request frame. The AP can also transmit a response frame including the determined multicast identifier to a station (STA). The STA can receive a multi-user frame containing a multicast subframe from the AP. The STA can determine whether the multicast subframe is destined for the STA based on the determined multicast identifier and a multicast identifier stored in a preamble of the multi-user frame. The STA can determine whether to decode the multicast subframe based on the determination of whether the multicast subframe is destined for the STA.Type: ApplicationFiled: September 2, 2016Publication date: March 9, 2017Applicant: Apple Inc.Inventors: Guoqing LI, Yong LIU, Joonsuk KIM, Christiaan A. HARTMAN, Su Khiong YONG, Syed A. MUJTABA, Matthew L. SEMERSKY
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Patent number: 9485767Abstract: A first wireless communication device including a first transceiver and a second transceiver. The first transceiver is configured to transmit first signals according to a first wireless communication technology. The second transceiver is configured to transmit second signals according to a second wireless communication technology. Memory is configured to store a schedule that identifies first intervals for allowing communication using the first signals and second intervals for allowing communication using the second signals. A coexistence circuit is configured to allow the first transceiver to transmit the first signals only during the first intervals, allow the second transceiver to transmit the second signals only during the second intervals, and cause the first transceiver to transmit, prior to each of the second intervals, a message that indicates a duration of a respective one of the second intervals.Type: GrantFiled: May 1, 2015Date of Patent: November 1, 2016Assignee: Marvell World Trade Ltd.Inventors: Sarang Shrikrishna Wagholikar, Harish Ramamurthy, Rajesh Shreeram Bhagwat, Matthew L. Semersky
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Publication number: 20160262082Abstract: A host device may include a first wireless communication circuit, a second wireless communication circuit including a proxy router, and a host processor communicatively coupled to the wireless communication circuits. The host device may receive, via the second wireless communication circuit, an advertisement message from a client device. The advertisement message may include a request for communication of data with a network. The host device may determine at least one of a communication policy preference of the host device and a network connection property of the host device. The proxy router may select the first or the second wireless communication circuit for use by the host device to communicate the data with the network. The host device may provide, via the second wireless communication circuit, a connection request to the client device, and then transfer, using the selected wireless communication circuit, the data between the client device and the network.Type: ApplicationFiled: October 23, 2015Publication date: September 8, 2016Applicant: APPLE INC.Inventors: Paul V. Flynn, Wen Zhao, Syed Aon Mujtaba, Sriram Hariharan, Matthew L. Semersky
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Publication number: 20160262205Abstract: A host device may include a wireless interface for communications, a memory, and a processor coupled to the memory and to the wireless interface. The host device may receive, via the wireless interface, an advertisement message from a client device. The advertisement message may include an identifier associated with the client device and a request for communication of data from a cloud-based service. Responsive to the advertisement, the host may send the identifier to the cloud-based service. The host may receive from the cloud-based service, a proxy indication of available data associated with the client. Responsive to receiving the proxy indication of available data, the host may provide, via the wireless interface, a connection request including a client indication of the available data from the cloud-based service to the client. After receiving the available data from the cloud-based service, the host device may send the available data to the client.Type: ApplicationFiled: October 23, 2015Publication date: September 8, 2016Applicant: APPLE INC.Inventors: Paul V. Flynn, Ajoy K. Singh, Wen Zhao, Dennis Mathews, Syed Aon Mujtaba, Sriram Hariharan, Matthew L. Semersky
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Publication number: 20160262191Abstract: A client device and a host device may create a local connection for providing wide area network access, such as Internet access, to the client device. In some embodiments, the client device may have limited network capabilities and may not be able to access the Internet without the host device. The client device may provide its speed and direction in a message to potential host devices. A host device may calculate a suitability metric, based on the speed and direction of the client as well as connection properties of the networks, which indicates an ability for the host device to connect the client device to the Internet. The host device may provide the suitability metric within a connection request to the client device. Based on the suitability metric and/or other factors, the client device and the host device may establish the local connection.Type: ApplicationFiled: October 23, 2015Publication date: September 8, 2016Applicant: APPLE INC.Inventors: Paul V. Flynn, Dennis Mathews, Ajoy K. Singh, Wen Zhao, Yong Liu, Syed Aon Mujtaba, Sriram Hariharan, Matthew L. Semersky
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Publication number: 20160234870Abstract: The embodiments set forth herein disclose techniques for enabling a user device to seamlessly establish a secure, high-bandwidth wireless connection with a vehicle accessory system to enable the user device to wirelessly stream user interface (UI) information to the vehicle accessory system. To implement this technique, a lower-bandwidth wireless technology (e.g., Bluetooth) is used as an initial means for establishing a Wi-Fi pairing between the user device and the vehicle accessory system. Wi-Fi parameters associated with a Wi-Fi network provided by the vehicle accessory system can be communicated to the user device using the lower-bandwidth wireless technology. A secure Wi-Fi connection can then be established between the user device and the vehicle accessory system using the provided Wi-Fi parameters. The embodiments also disclose a technique for enabling the user device to automatically reconnect with the vehicle accessory system in a seamless manner (e.g., when returning to a vehicle).Type: ApplicationFiled: February 5, 2016Publication date: August 11, 2016Inventors: Daniel R. BORGES, Sriram HARIHARAN, Matthew L. SEMERSKY, Michael J. GILES, Andre M. BOULE, Brian D. PIETSCH, Artiom SHAMIS, Ganesha Adkasthala GANAPATHI BATA, Christopher R. WHITNEY, Tanya G. Kancheva, Friedrich W. DREES
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Publication number: 20160064940Abstract: Examples of the disclosure are directed to methods of managing power of various modules of an electronic device to prevent the voltage of the battery from falling to an undervoltage lockout (UVLO) threshold. In some examples, software operating on the electronic device or an associated electronic device (e.g., a paired electronic device) may assign power budgets to one or more modules, thereby preventing each module from drawing its maximum current capacity and causing the battery's voltage level to fall to the UVLO threshold. In some examples, a pre-UVLO threshold (i.e., a threshold higher than the UVLO threshold) may be used to modify the states of one or more modules to save power as the voltage of the battery approaches the UVLO threshold, but before the device must be fully powered off.Type: ApplicationFiled: July 29, 2015Publication date: March 3, 2016Inventors: Cyril DE LA CROPTE DE CHANTERAC, David A. HARDELL, Matthew L. SEMERSKY, Yehonatan PEREZ
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Publication number: 20160057707Abstract: Circuits, methods, and apparatus that react to brownout or near brownout conditions and mitigate complications that may result. Examples may turn off one or more circuits, such as a Wi-Fi transceiver when a brownout condition is reached or neared. Other examples may provide circuits, methods, and apparatus that proactively avoid brownout conditions. These examples may detect that a brownout condition may occur and take steps, such as Wi-Fi traffic shaping, to avoid them. Still further examples may react to brownout or near brownout conditions one or more times, then preemptively act to avoid further brownout conditions.Type: ApplicationFiled: May 30, 2015Publication date: February 25, 2016Applicant: APPLE INC.Inventors: Matthew L. Semersky, David A. Hardell, Cyril de la Cropte de Chanterac, Yehonantan Perez
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Patent number: 9226335Abstract: A communication device using a current wireless network via a first access point confirms availability of a second access point before breaking the current connection. To confirm availability of the second access point, the communication device sends a power management message that causes the first access point to store packets during the power management period. After the connection to the second access point is confirmed, the second session may be put on hold using the same technique while the connection to the first access point is restored, the stored packets processed and the connection closed. Then the connection to the second access point may be reactivated and further communication made through the second access point.Type: GrantFiled: February 18, 2013Date of Patent: December 29, 2015Assignee: MARVELL INTERNATIONAL LTD.Inventors: Matthew L. Semersky, Frank Huang, James Jan, Robert Lee
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Publication number: 20150341869Abstract: A method for controlling transmission power in accordance with a total transmission power limit in a multi-radio wireless communication device including a master radio and a slave radio is provided. The method can include the wireless communication device determining, at the master radio, a transmission power of the master radio. The method can further include the wireless communication device providing information indicative of the transmission power of the master radio from the master radio to the slave radio. The method can additionally include determining, at the slave radio, an allowable transmission power for the slave radio. A sum of the allowable transmission power and the transmission power of the master radio may not exceed the total transmission power limit.Type: ApplicationFiled: May 20, 2014Publication date: November 26, 2015Applicant: Apple Inc.Inventors: Indranil Sen, Mohit Narang, Digvijay Arjunrao Jadhav, William S. Burchill, Vinay R. Majjigi, Paul V. Flynn, Wen Zhao, Matthew L. Semersky
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Publication number: 20150237625Abstract: A first wireless communication device including a first transceiver and a second transceiver. The first transceiver is configured to transmit first signals according to a first wireless communication technology. The second transceiver is configured to transmit second signals according to a second wireless communication technology. Memory is configured to store a schedule that identifies first intervals for allowing communication using the first signals and second intervals for allowing communication using the second signals. A coexistence circuit is configured to allow the first transceiver to transmit the first signals only during the first intervals, allow the second transceiver to transmit the second signals only during the second intervals, and cause the first transceiver to transmit, prior to each of the second intervals, a message that indicates a duration of a respective one of the second intervals.Type: ApplicationFiled: May 1, 2015Publication date: August 20, 2015Inventors: Sarang Shrikrishna WAGHOLIKAR, Harish Ramamurthy, Rajesh Shreeram Bhagwat, Matthew L. Semersky
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Patent number: 9026162Abstract: Apparatus configured to be implemented in a first wireless communication device, having corresponding non-transitory computer-readable media, comprise a memory configured to store a coexistence schedule, wherein the coexistence schedule defines WLAN intervals and non-WLAN intervals; a WLAN transceiver configured to transmit WLAN signals in an IBSS network; a non-WLAN transceiver configured to transmit wireless non-WLAN signals; and a coexistence circuit configured to allow the WLAN transceiver to transmit the WLAN signals in the IBSS network only during the WLAN intervals, wherein the coexistence circuit is further configured to allow the non-WLAN transceiver to transmit the wireless non-WLAN signals only during the non-WLAN intervals; and wherein the coexistence circuit is further configured to cause the WLAN transceiver to transmit one or more coexistence request messages, each indicating a duration of at least one of a respective one of the WLAN intervals, and a respective one of the non-WLAN intervals.Type: GrantFiled: April 27, 2012Date of Patent: May 5, 2015Assignee: Marvell World Trade Ltd.Inventors: Sarang Shrikrishna Wagholikar, Harish Ramamurthy, Rajesh Shreeram Bhagwat, Matthew L. Semersky
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Publication number: 20150092652Abstract: This document describes multicast communication between wireless devices. A scheduling frame may be wirelessly transmitted by a wireless device. The scheduling frame may include a multicast address indicating a group of intended receiving devices for a payload frame. The scheduling frame may further include scheduling information indicating an order for the group of intended receiving devices to transmit acknowledgement information for the payload frame. A payload frame may also be wirelessly transmitted by the wireless device. The payload frame may include payload information intended for the group of intended receiving devices. Additionally, acknowledgement frames may be wirelessly received by the wireless device from at least a subset of the group of intended receiving devices. The acknowledgement frames may be received according to the order indicated in the scheduling information.Type: ApplicationFiled: November 25, 2013Publication date: April 2, 2015Applicant: Apple Inc.Inventors: Harish Ramamurthy, Kapil Chhabra, Matthew L. Semersky, Daniel R. Borges, Charles F. Dominguez
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Patent number: 8863148Abstract: A network interface includes a firmware module that generates a first message based on a first print macro call and a memory module that stores the first message. The first message comprises a subset of data indicative of the first print macro call.Type: GrantFiled: December 19, 2007Date of Patent: October 14, 2014Assignee: Marvell International Ltd.Inventors: Long Chow, James K. Jan, Matthew L. Semersky, Chen Fan, Xiaohua Luo, Frank Huang, Robert Lee