Patents by Inventor Yanjun Sun
Yanjun Sun 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: 20120039329Abstract: A system and method for using partially received packets in coexisting networks. In one embodiment, a wireless receiver includes an interference detector and a packet validator. The interference detector is configured to determine that time multiplexing of a coexisting wireless network interferes with reception of a packet by the wireless receiver. The packet validator is configured to identify a type of the packet and useable data values of the packet when a partial packet is received due to the time multiplexing. The packet validator is configured to identify the type and useable data values of the packet based on a packet signature stored in the wireless receiver.Type: ApplicationFiled: February 15, 2011Publication date: February 16, 2012Applicant: TEXAS INSTRUMENTS INCORPORATEDInventors: Yanjun SUN, Ariton E. XHAFA, Xiaolin LU, Josef PEERY
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Publication number: 20120020266Abstract: Apparatus and method for improving throughput in a wireless device accessing coexisting networks. In one embodiment, a wireless device includes first and second wireless transceivers, a power state controller, and an access controller. The first wireless transceiver is configured to access a first wireless network. The second wireless transceiver is configured to access a second wireless network. The power state controller is configured to switch the first wireless transceiver between an active state and a sleep state. The power consumed by the first wireless transceiver while in the sleep state is reduced relative to the active state. The access controller is configured to alternately allocate a wireless medium to the first wireless transceiver and the second wireless transceiver. The power state controller and the medium access controller are configured to coordinate power state switching of the first wireless transceiver and wireless medium access by the second wireless transceiver.Type: ApplicationFiled: July 26, 2011Publication date: January 26, 2012Applicant: TEXAS INSTRUMENTS INCORPORATEDInventors: Yanjun SUN, Ariton E. XHAFA, Ramanuja VEDANTHAM, Xiaolin LU
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Publication number: 20110310826Abstract: A wireless combination device includes a first wireless transceiver configured for communication via a first wireless network over a first band, and a second wireless transceiver configured for communication via a second wireless network over a second band that overlaps the second band. The combination device includes a medium allocation scheduler coupled to the first wireless transceiver and second wireless transceiver for implementing spaced-mode operation that intentionally inserts idle gaps in transmissions via the second wireless network when triggered by the presence of at least one spaced-mode triggering condition. The idle gaps allow wireless transmissions via the first wireless network to be received by the combination device with higher probability, and without the need for clear to send (C2S) protection.Type: ApplicationFiled: June 15, 2011Publication date: December 22, 2011Applicant: TEXAS INSTRUMENTS INCORPORATEDInventors: YANJUN SUN, ARITON E. XHAFA, RAMANUJA VEDANTHAM, XIAOLIN LU
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Publication number: 20110310869Abstract: A method of communications for a coexisting wireless network including a wireless combination (combo) device communicating via a first wireless network and second wireless network, and a first wireless device on the first network. During an activity interval for the second network (i) a transmit (Tx) time interval is longer in duration than a Tx packet duration and/or (ii) a receive (Rx) time interval is longer in duration than a Rx packet duration to provide remaining time. A frame aggregated packet is used on the first network that includes a plurality of data packets and a dummy packet or spoofing so that the frame aggregated packet is extended in time or indicates an extension sufficient to overlap the Tx time interval or Rx time interval. The combo device transmits or receives an acknowledgement (ACK) on the first network during the activity interval for the second wireless network.Type: ApplicationFiled: June 15, 2011Publication date: December 22, 2011Applicant: TEXAS INSTRUMENTS INCORPORATEDInventors: ARITON E. XHAFA, YANJUN SUN, RAMANUJA VEDANTHAM
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Publication number: 20110235600Abstract: A wireless device includes a first wireless transceiver and a second wireless transceiver. The first wireless transceiver is configured to communicate via a first wireless network, and includes a first scheduler configured to schedule communication via the first wireless network. The second wireless transceiver is configured to communicate via a second wireless network. The second wireless transceiver includes a second scheduler. The second scheduler is configured to identify a resource allocated to the second wireless transceiver for a transaction via the second wireless network, to identify a portion of the resource used by the second wireless transceiver for the transaction, and to transfer information defining the portion to the first transceiver.Type: ApplicationFiled: March 24, 2011Publication date: September 29, 2011Applicant: TEXAS INSTRUMENTS INCORPORATEDInventors: Yanjun SUN, Ariton E. XHAFA, Josef PEERY, Assaf SELLA, Xiaolin LU
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Publication number: 20110225305Abstract: A system comprising a first wireless device which comprises a first group owner intent determination unit. The first group owner intent determination unit is configured to determine a group owner intent value of the first wireless device based on: whether the first wireless device is configured to access a coexisting wireless network, the power remaining in the first wireless device at the time the group owner intent value determination is made, whether the first wireless device is a group owner in another peer to peer group, a received signal strength indication of the first wireless device, and/or whether the first wireless device is required to perform a cross-connection between an infrastructure basic service set and a peer to peer group.Type: ApplicationFiled: March 10, 2011Publication date: September 15, 2011Applicant: TEXAS INSTRUMENTS INCORPORATEDInventors: Ramanuja VEDANTHAM, Ariton E. XHAFA, Yanjun SUN
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Publication number: 20110222409Abstract: A system and method for using reserved resources in coexisting wireless networks. In one embodiment, a wireless apparatus includes a receiver, a network activity monitor, and a network access scheduler. The receiver is configured to identify a received network reservation message that inhibits access to a first wireless network for an interval defined in the reservation message. The network activity monitor is configured to monitor wireless activity on the first wireless network during the interval. The network access scheduler is configured to determine whether the reservation message prevents conflict of the first wireless network with a coexisting wireless network during the interval, and to schedule, based on a determination that the reservation message prevents conflict with the coexisting wireless network, the wireless apparatus to transmit on the first wireless network during the interval to a wireless device other than a wireless device identified in the reservation message.Type: ApplicationFiled: March 14, 2011Publication date: September 15, 2011Applicant: TEXAS INSTRUMENTS INCORPORATEDInventors: Yanjun SUN, Ariton E. XHAFA, Ramanuja VEDANTHAM, Xiaolin LU
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Publication number: 20110158115Abstract: Embodiments of the invention provide a method to allow a software access point (SAP)-enabled device to go to sleep as much as possible without sacrificing throughput and latency across networks. The SAP-enabled device defers transmissions from client stations if maximum end-to-end throughput that can be supported by the networks is below the maximum throughput supported by a connection to the client station.Type: ApplicationFiled: April 1, 2010Publication date: June 30, 2011Applicant: TEXAS INSTRUMENTS INC.Inventors: Yanjun Sun, David Levy, Ofer Guetta
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Publication number: 20110103355Abstract: In at least some embodiments, a communication device includes a host processor and a plurality of co-existing wireless technology transceivers coupled to the host processor. The plurality of co-existing wireless technology transceivers share a communication medium using time-multiplexing. A throughput for data transmissions by the plurality of co-existing wireless technology transceivers is based on an algorithm that determines a grouping option for data packets to be transmitted by one of the co-existing wireless technology transceivers, the grouping option providing a highest throughput for a predetermined baseband PHY rate without exceeding a predetermined maximum grouping delay.Type: ApplicationFiled: October 27, 2010Publication date: May 5, 2011Applicant: TEXAS INSTRUMENTS INCORPORATEDInventors: Yanjun SUN, Ariton E. XHAFA, Assaf SELLA, Josef PEERY, Xiaolin LU
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Publication number: 20110086660Abstract: A system and method for optimizing medium utilization with coexisting wireless networks is described herein. In one embodiment, a wireless device includes a first wireless transceiver, a second wireless transceiver, and logic configured to determine which of the first and second wireless transceivers is enabled at a given time. The first wireless transceiver is configured for operation with a first wireless network. The second wireless transceiver is configured for operation with a second wireless network coexisting with the first wireless network. The logic is further configured to predict an arrival time of a transmission from a different device and to enable the second wireless transceiver based on the predicted arrival time.Type: ApplicationFiled: October 13, 2010Publication date: April 14, 2011Applicant: TEXAS INSTRUMENTS INCORPORATEDInventors: Yanjun SUN, Ariton E. XHAFA, Xiaolin LU, Assaf SELLA, Josef PEERY
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Publication number: 20100329202Abstract: A wireless device comprises a first wireless transceiver configured for communication via a first wireless network, a second wireless transceiver configured for communication via a second wireless network; and a scheduler that controls which of the first and second transceivers is granted access to a wireless medium at a given time. When the first wireless transceiver has been granted access to the wireless medium by the scheduler and the first wireless transceiver receives a packet via the first wireless network, the scheduler temporarily grants the second wireless transceiver access to the wireless medium based on the packet indicating that first wireless transceiver is not to use the wireless medium for a period of time.Type: ApplicationFiled: June 24, 2010Publication date: December 30, 2010Applicant: TEXAS INSTRUMENTS INCORPORATEDInventors: Yanjun SUN, Ariton E. XHAFA, Xiaolin LU, Assaf SELLA
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Publication number: 20100325459Abstract: A device includes a peer-to-peer group owner processor. The device also includes a memory coupled to the peer-to-peer group owner processor. At least one client associated with the device is a legacy client, and the peer-to-peer group owner processor enters a listening state after a dozing state. The device consumes less power in the listening state than in an awake state.Type: ApplicationFiled: June 17, 2010Publication date: December 23, 2010Applicant: TEXAS INSTRUMENTS INCORPORATEDInventors: Shantanu KANGUDE, Ariton E. XHAFA, Yanjun SUN, Harshal S. CHHAYA
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Publication number: 20100278065Abstract: Embodiments of the invention comprise a system and method for estimating a traffic load on a wireless network. An access point notifies a station that the access point will not receive transmissions during a first quiet period. After the first quiet period, the access point monitors the wireless network during a first monitoring period. If no transmissions are received during the first monitoring period, the access point notifies the station that it will not receive transmissions during a second quiet period. The second quiet period has an equal or longer duration than the first quiet period. The access point alternates between monitoring periods and quiet periods and progressively expands the duration of the quiet periods as long as no transmissions are received during the monitoring periods. If a station notifies the access point that packets are pending at the device, the monitoring period is extended to handle these packets immediately.Type: ApplicationFiled: April 29, 2010Publication date: November 4, 2010Applicant: TEXAS INSTRUMENTS INC.Inventors: Yanjun Sun, Ariton E. Xhafa
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Publication number: 20100268841Abstract: A system composed of a node configured to transmit a first data stream to a first device using a first protocol and a second data stream to a second device using a second protocol. The system is also composed of a controller in communication with the node. The controller is configured to prioritize a first packet of the first data stream prior to transmission of the first packet. The prioritization is based on application layer information of the first packet. If the application layer information of the first packet indicates that the priority of the first packet is lower than the priority of a second packet of the second data stream, the controller causes the node to transmit the second packet.Type: ApplicationFiled: April 20, 2010Publication date: October 21, 2010Applicant: TEXAS INSTRUMENTS INCORPORATEDInventors: Ariton E. XHAFA, Yanjun SUN, Xiaolin LU
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Publication number: 20100246464Abstract: A system comprises radio circuitry, an access point (AP) feature, and a station (STA) feature. The AP feature causes the radio circuitry to transmit data to a hardware device during a beacon interval. The AP feature is not used to receive data from the hardware device during the beacon interval except to receive data request signals. The STA feature causes the radio circuitry to receive data from the hardware device during the beacon interval. The STA feature is not used to transmit data to the hardware device during the beacon interval except to transmit data request signals. The radio circuitry is in a de-powered state during the beacon interval when the radio circuitry does not transmit or receive data or data request signals.Type: ApplicationFiled: March 23, 2010Publication date: September 30, 2010Applicant: TEXAS INSTRUMENTS INCORPORATEDInventors: Yanjun SUN, Ariton E. XHAFA, Shantanu KANGUDE, Xiaolin LU
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Publication number: 20100238807Abstract: A system composed of a device configured to communicate, using a first wireless protocol, with a node. The system also comprises a processor coupled to the device and configured to determine whether the node operates in a coexistence mode. If the processor determines that the node operates in a coexistence mode then, as a result, the processor determines when the node operates in the first wireless protocol and communicates, by way of the device and without solicitation from the node, with the node when the node operates in the first wireless protocol.Type: ApplicationFiled: March 19, 2010Publication date: September 23, 2010Applicant: TEXAS INSTRUMENTS INCORPORATEDInventors: Ariton E. Xhafa, Yanjun Sun, Xiaolin Lu
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Publication number: 20100093392Abstract: A system and method for protecting a wireless device including co-located network transceivers from uplink starvation are disclosed herein. A wireless device includes a first wireless transceiver and a second wireless transceiver respectively configured for communication via a first wireless network and a second wireless network. The wireless device further includes logic that determines which of the first and second transceivers is enabled to transmit at a given time. The logic determines a duration of a pending transmission via the first transceiver, and determines a predicted start time of a predicted transmission via the second transceiver. Based on the duration and the predicted start time, the logic transmits a notification signal indicating that a receiving device should refrain from transmitting on the first network for a reserved time ending after the pending transmission starts. The pending transmission starts following completion of the predicted transmission.Type: ApplicationFiled: October 7, 2009Publication date: April 15, 2010Applicant: TEXAS INSTRUMENTS INCORPORATEDInventors: Yanjun SUN, Ariton E. XHAFA, Xiaolin LU
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Publication number: 20100085946Abstract: A network includes an access point and a station. The station transmits to the access point a current clear-to-send packet at a current time during a current exchange. The transmission is based on success or failure of a previous exchange during which a previous clear-to-send packet was transmitted at a previous time.Type: ApplicationFiled: September 29, 2009Publication date: April 8, 2010Applicant: TEXAS INSTRUMENTS INCORPORATEDInventors: Yanjun SUN, Ariton E. XHAFA, Xiaolin LU, Josef PEERY
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Publication number: 20100069112Abstract: A system and method for scheduling channel access in a wireless device including co-located network transceivers are disclosed herein. A wireless device includes a first wireless transceiver, a second wireless transceiver, and an arbiter. The first wireless transceiver is configured for communication via a first wireless network. The second wireless transceiver is configured for communication via a second wireless network. The arbiter controls which one of the first and second transceivers is enabled to transmit at a given time. The arbiter computes a predicted a start time for a transmission via the second wireless transceiver and computes a transmission duration for a first packet pending transmission via the first transceiver. Based on the predicted start time and the computed duration, the arbiter transmits the first packet at a time when the first packet transmission does not overlap the transmission via the second wireless transceiver.Type: ApplicationFiled: September 15, 2009Publication date: March 18, 2010Applicant: TEXAS INSTRUMENTS INCORPORATEDInventors: Yanjun SUN, Ariton E. XHAFA, Xiaolin LU
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Publication number: 20100067424Abstract: In accordance with at least some embodiments, a system comprises an access point and a station in communication with the access point. The station has at least two network technology subsystems subject to coexistence interference. The station selectively implements bounded Power Save (PS)-Polling (BPS) logic to handle communications between the station and the access point. The BPS logic operates to confine PS-Poll transmissions starts to one of two separate windows during a medium grant duration of the station.Type: ApplicationFiled: September 18, 2009Publication date: March 18, 2010Applicant: TEXAS INSTRUMENTS INCORPORATEDInventors: Yanjun SUN, Ariton E. XHAFA, Xiaolin LU