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: 20140023058Abstract: A network includes an access point using a first protocol and a station using both the first protocol and a second protocol. The station uses the first protocol before a first threshold and a second protocol after the first threshold. A first duration between the second threshold and the first threshold is at least of sufficient length for the station to receive one data packet from the access point and send an acknowledgment. The station transmits to the access point a current clear-to-send packet at a current time during a current exchange based on success or failure of a previous exchange during which a previous clear-to-send packet was transmitted to the access point at a previous time.Type: ApplicationFiled: September 26, 2013Publication date: January 23, 2014Applicant: Texas Instruments IncorporatedInventors: Yanjun Sun, Ariton E. Xhafa, Xiaolin Lu, Josef Peery
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Publication number: 20140016625Abstract: A system and method for arbitrating channel access in a wireless device including co-located network transceivers are disclosed herein. A wireless device includes a first wireless transceiver and a second wireless transceiver. The first transceiver is configured for operation with a first wireless network. The second transceiver is configured for operation with 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 causes the first transceiver to transmit a notification signal indicating a time period during which the second transceiver of the wireless device will perform a first wireless transaction, and during which, based on receiving the notification signal, a different wireless device performs a second wireless transaction via the second wireless network without transmitting a notification signal.Type: ApplicationFiled: September 17, 2013Publication date: January 16, 2014Applicant: Texas Instruments IncorporatedInventors: Yanjun Sun, Ariton E. Xhafa, Xiaolin Lu, Josef Peery
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Patent number: 8625510Abstract: 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: GrantFiled: March 24, 2011Date of Patent: January 7, 2014Assignee: Texas Instruments IncorporatedInventors: Yanjun Sun, Ariton E. Xhafa, Josef Peery, Assaf Sella, Xiaolin Lu
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Patent number: 8588080Abstract: 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: GrantFiled: March 14, 2011Date of Patent: November 19, 2013Assignee: Texas Instruments IncorporatedInventors: Yanjun Sun, Ariton E. Xhafa, Ramanuja Vedantham, Xiaolin Lu
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Publication number: 20130301453Abstract: A wireless device that tailors communications based on power parameters of the device. In one embodiment, a wireless device includes an energy source, a power monitor coupled to the energy source, a wireless transceiver, and a traffic controller coupled to the power monitor and the wireless transceiver. The power monitor is configured to measure a parameter of the energy source. The wireless transceiver is configured to wirelessly communicate via a wireless network. The traffic controller is configured to set length of packets to be transmitted based on the measured parameter of the energy source.Type: ApplicationFiled: May 10, 2013Publication date: November 14, 2013Applicant: Texas Instruments IncorporatedInventors: Ariton E. Xhafa, Soon-Hyeok Choi, Yanjun Sun, Leonardo William Estevez
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Patent number: 8582550Abstract: 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: GrantFiled: September 18, 2009Date of Patent: November 12, 2013Assignee: Texas Instruments IncorporatedInventors: Yanjun Sun, Ariton E. Xhafa, Xiaolin Lu
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Publication number: 20130259016Abstract: A wireless device includes a wireless transceiver configured to transmit to and receive from nodes in a wireless sensor network (WSN) and control logic coupled to the first wireless transceiver. The wireless transceiver transmits a wireless packet to a node in the WSN based on the transmission coinciding with a break in transmissions for a second wireless network. Based on the wireless transceiver being configured to transmit the wireless packets utilizing time synchronized channel hopping, slot frames for packet transmissions in the WSN are time offset so as not to coincide with transmissions made on the second wireless network. Based on the wireless transceiver being configured to transmit the packets utilizing coordinated sampled listening, wake up sequence transmissions for the WSN are time offset so as not to coincide with the transmissions made on the second wireless network.Type: ApplicationFiled: March 28, 2013Publication date: October 3, 2013Applicant: Texas Instruments IncorporatedInventors: Ariton E. Xhafa, Soon-Hyeok Choi, Srinath Hosur, Yanjun Sun
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Publication number: 20130250928Abstract: Various techniques are disclosed for assigning timeslots in a multihop wireless network. One such method includes, for each node for uplink timeslot assignments, assigning a higher hop count node to a timeslot that is to occur before all time slots assigned to lower hop count nodes. The method further includes, for each node for downlink timeslot assignments, assigning a lower hop count node to a timeslot that is to occur before all time slots assigned to higher hop count nodes.Type: ApplicationFiled: March 22, 2013Publication date: September 26, 2013Applicant: TEXAS INSTRUMENTS INCORPORATEDInventors: Soon-Hyeok CHOI, Ariton E. XHAFA, Yanjun SUN
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Patent number: 8537803Abstract: A system and method for arbitrating channel access in a wireless device including co-located network transceivers are disclosed herein. A wireless device includes a first wireless transceiver and a second wireless transceiver. The first transceiver is configured for operation with a first wireless network. The second transceiver is configured for operation with 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 causes the first transceiver to transmit a notification signal indicating a time period during which the second transceiver of the wireless device will perform a first wireless transaction, and during which, based on receiving the notification signal, a different wireless device performs a second wireless transaction via the second wireless network without transmitting a notification signal.Type: GrantFiled: September 15, 2009Date of Patent: September 17, 2013Assignee: Texas Instruments IncorporatedInventors: Yanjun Sun, Ariton E. Xhafa, Xiaolin Lu, Josef Peery
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Publication number: 20130188670Abstract: An electronic communication device comprises a first transceiver capable of a bi-directional communication session on a first communication medium; a second transceiver capable of a bi-directional communication session on a second communication medium; and a control logic coupled to the first transceiver and the second transceiver, wherein the control logic is configured to receive, from the first transceiver, a first signal, and cause, in response to the first signal, data transmitted by the first transceiver on the first communication medium as part of a communication session to be transmitted instead by the second transceiver on the second communication medium while the first transceiver continues to receive data as part of the communication session.Type: ApplicationFiled: July 19, 2012Publication date: July 25, 2013Applicant: TEXAS INSTRUMENTS INCORPORATEDInventors: Yanjun SUN, Gang Xu, Soon-Hyeok Choi, Bhadra Sandeep, Xiaolin Lu, Ariton E. Xhafa, Minghua Fu, Robert Liang, Susan Yim
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Publication number: 20130188673Abstract: An electronic communication device comprises a first transceiver capable of a bi-directional communication session on a first communication medium; a second transceiver capable of a bi-directional communication session on a second communication medium; and a control logic coupled to the first transceiver and the second transceiver and capable of implementing a convergence layer, wherein the control logic is configured to receive, from the first transceiver, a first signal; and cause, in response to the first signal, data received and transmitted by the first transceiver on the first communication medium as part of a communication session to be received and transmitted instead by the second transceiver on the second communication medium.Type: ApplicationFiled: July 19, 2012Publication date: July 25, 2013Applicant: TEXAS INSTRUMENTS INCORPORATEDInventors: Yanjun SUN, Gang Xu, Soon-Hyeok Choi, Bhadra Sandeep, Xiaolin Lu, Ariton E. Xhafa, Minghua Fu, Robert W. Liang, Susan Yim
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Publication number: 20130182686Abstract: An integrated circuit includes logic configured to determine a communication schedule of a device configured to perform Wi-Fi communications in a first Basic Service Set (BSS) network and in a second BSS network. The logic determines the communication schedule based at least in part on a first BSS network communication load of the device and on a second BSS network communication load of the device. The communication schedule defines the service time allocation of the device in the first BSS network and the service time allocation of the device in the second BSS network. At least one of the first and the second BSS networks is supportive of a peer-to-peer connection.Type: ApplicationFiled: July 18, 2012Publication date: July 18, 2013Applicant: TEXAS INSTRUMENTS INCORPORATEDInventors: Ramanuja VEDANTHAM, Michael GLIK, Ariton E. XHAFA, Yanjun SUN
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Patent number: 8477703Abstract: 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: GrantFiled: June 24, 2010Date of Patent: July 2, 2013Assignee: Texas Instruments IncorporatedInventors: Yanjun Sun, Ariton E. Xhafa, Xiaolin Lu, Assaf Sella
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Patent number: 8456998Abstract: 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: GrantFiled: March 19, 2010Date of Patent: June 4, 2013Assignee: Texas Instruments IncorporatedInventors: Ariton E. Xhafa, Yanjun Sun, Xiaolin Lu
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Patent number: 8458504Abstract: 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: GrantFiled: June 17, 2010Date of Patent: June 4, 2013Assignee: Texas Instruments IncorporatedInventors: Shantanu Kangude, Ariton E. Xhafa, Yanjun Sun, Harshal S. Chhaya
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Publication number: 20130114298Abstract: Embodiments of the present invention disclose a backlight and a display device, to reduce the number of LEDs in a backlight, save costs, while avoiding dark areas appearing on the screen, so as to ensure display effect. The backlight comprises a first light guide plate and at least one light-emitting diode assembly, and the light-emitting diode assembly is located on one side of the first light guide plate. The light-emitting diode assembly comprises a second light guide plate, at least one light-emitting diode and a reflective film, wherein the at least one light-emitting diode is located on at least one side of the second light guide plate, and the reflective film is located on at least one side of the second light guide plate.Type: ApplicationFiled: July 20, 2012Publication date: May 9, 2013Applicant: BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.Inventors: Zhanchang Bu, Bochang Wang, Fei Wang, Yanjun Sun, Yi Deng, Guangsheng Hua
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Publication number: 20130028156Abstract: A wireless device includes a peer-to-peer group owner processor that handles peer-to-peer transactions, a memory coupled to the peer-to-peer group owner processor, and a power state controller. The power state controller determines an access category of a communication received from a peer-to-peer client and determines a quality of service constraint for the access category. The power state controller also determines a power-save mechanism for the wireless device based on the quality of service constraint and implements the determined power-save mechanism.Type: ApplicationFiled: July 26, 2011Publication date: January 31, 2013Applicant: TEXAS INSTRUMENTS INCORPORATEDInventors: Ramanuja VEDANTHAM, Ariton E. XHAFA, Yanjun SUN
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Publication number: 20120327920Abstract: Disclosed implementations address the coexistence problem of wireless local area network (WLAN) and Bluetooth Low Energy (BLE) technologies on the same device. For example, an apparatus includes a WLAN controller configured to cause a wireless transceiver module to send and receive packets over a wireless medium. A second controller is coupled to the WLAN controller and also configured to cause the wireless transceiver module to send and receive packet. The second controller informs the WLAN controller that the second controller is going to cause an advertising packet to be transmitted by the wireless transceiver module. The WLAN controller responds by causing a first protection packet to be transmitted by the wireless transceiver module, said first protection packet causes all wireless devices receiving the protection packet to inhibit use of the wireless medium during a timer period which includes the advertising packet. Other embodiments are disclosed as well.Type: ApplicationFiled: June 19, 2012Publication date: December 27, 2012Applicant: Texas Instruments IncorporatedInventors: Ariton E. XHAFA, Yanjun Sun
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Publication number: 20120314661Abstract: A network includes an access point using a first protocol and a station using both the first protocol and a second protocol. The station uses the first protocol before a first threshold and a second protocol after the first threshold. A first duration between the second threshold and the first threshold is at least of sufficient length for the station to receive one data packet from the access point and send an acknowledgment. The station transmits to the access point a current clear-to-send packet at a current time during a current exchange based on success or failure of a previous exchange during which a previous clear-to-send packet was transmitted to the access point at a previous time.Type: ApplicationFiled: August 21, 2012Publication date: December 13, 2012Applicant: TEXAS INSTRUMENTS INCORPORATEDInventors: Yanjun Sun, Ariton E. Xhafa, Xiaolin Lu, Josef Peery
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Publication number: 20120281533Abstract: In at least some embodiments, a communication device includes a transceiver with at least two dissimilar wireless network technology subsystems. The communication device also includes a silencing frame controller to monitor access point rate drop behavior and to adjust a level of silencing frame operations for the communication device based on the monitored access point drop behavior.Type: ApplicationFiled: May 3, 2012Publication date: November 8, 2012Applicant: TEXAS INSTRUMENTS INCORPORATEDInventors: Ariton E. Xhafa, Yanjun Sun, Ramanuja Vedantham, Assaf Sella, Josef Peery, Xiaolin Lu