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: 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
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Patent number: 8270378Abstract: 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: GrantFiled: September 29, 2009Date of Patent: September 18, 2012Assignee: Texas Instruments IncorporatedInventors: Yanjun Sun, Ariton E. Xhafa, Xiaolin Lu, Josef Peery
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Publication number: 20120182979Abstract: An integrated circuit includes logic configured to adjust an original service time of a first Wi-Fi Basic Service Set connection (“BSS”), out of a plurality of BSSs configured to be associated with a communication device, to an adjusted service time based on an unsuccessful acknowledgement transmission or reception in a previous service time on the first BSS. At least one of the plurality of BSSs is supportive of a peer-to-peer connection.Type: ApplicationFiled: June 22, 2011Publication date: July 19, 2012Applicant: TEXAS INSTRUMENTS INCORPORATEDInventors: Ramanuja VEDANTHAM, Assaf SELLA, Xiaolin LU, Ariton E. XHAFA, Yanjun SUN
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Publication number: 20120184330Abstract: A wireless device comprises a first wireless transceiver, a second wireless transceiver, and control logic. The control logic is coupled to the first wireless transceiver and the second wireless transceiver. The control logic is configured to determine whether to transmit protection frames (e.g., clear-to-send 2 self frames) based upon sequence numbers in frames received from another device.Type: ApplicationFiled: January 17, 2012Publication date: July 19, 2012Applicant: TEXAS INSTRUMENTS INCORPORATEDInventors: Yanjun SUN, Ariton E. XHAFA, Ramanuja VEDANTHAM, Josef PEERY, Assaf SELLA, Xiaolin LU
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Patent number: 8224378Abstract: 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: GrantFiled: October 7, 2009Date of Patent: July 17, 2012Assignee: Texas Instruments IncorporatedInventors: Yanjun Sun, Ariton E. Xhafa, Xiaolin Lu
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Publication number: 20120163312Abstract: Systems and methods for reducing the number of silencing frames transmitted in a coexistence network are described. In some embodiments, a method may include abstaining from transmitting silencing frames until detection of a predetermined event. Predetermined events include, for example, detection of a retransmitted packet, detection of a transmission or packet rate drop, and/or detection that an expected packet has been missed. In some cases, two or more predetermined events may be logically combined in any suitable manner or order, and may occur in series or in parallel with respect to each other. Once the predetermined event(s) have been detected, a silencing frame may then be transmitted. In some cases, subsequent silencing frames may be transmitted to facilitate return to a maximum attainable transmission rate. An investigation or observation period during which silencing frames are transmitted despite the absence of a predetermined event may enable the collection of network statistics.Type: ApplicationFiled: December 21, 2011Publication date: June 28, 2012Applicant: Texas Instruments IncorporatedInventors: Ariton E. Xhafa, Yanjun Sun, Josef Peery, Assaf Sella, Xiaolin Lu
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Publication number: 20120129456Abstract: Embodiments provide systems and methods to optimize the time when to receive transmissions from dissimilar wireless networks, and hence, improve the overall network throughput and avoid access point transmission rate fall-back mechanism having an avalanche effect during coexistence of dissimilar wireless network technologies. A receiver comprises at least two dissimilar network technology subsystems and is able to receive transmissions from dissimilar wireless network technology subsystems during a predetermined reception window.Type: ApplicationFiled: November 28, 2011Publication date: May 24, 2012Applicant: TEXAS INSTRUMENTS INCORPORATEDInventors: Ariton E. Xhafa, Yanjun Sun, Ramanuja Vedantham
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Publication number: 20120127903Abstract: Apparatus, systems, and methods disclosed herein operate to provide wireless communication between personal mobile communication (PMC) devices. An emulated wireless access point (AP) at a first PMC device (PMC1) establishes a first tunneled direct link setup (TDLS) session between a first station module (STA1) incorporated into the PMC1 and a second station module (STA2) incorporated into a second PMC device (PMC2). Following establishment of the TDLS session, the wireless AP is allowed to sleep; and most infrastructure management duties are handled by the STA1 during the session. PMC device battery charge may be conserved as a result. The emulated wireless AP may also establish a second TDLS link to a third station module (STA3) incorporated into a third PMC device (PMC3). The STA1 may then bridge data traffic flow between the STA2 and the STA3. Such bridging operation may enable communication between two PMC devices otherwise unable to decode data received from the other.Type: ApplicationFiled: May 17, 2011Publication date: May 24, 2012Inventors: Leonardo William Estevez, Ariton Xhafa, Ramanuja Vedantham, Yanjun Sun
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Publication number: 20120106528Abstract: A system and method for accessing a wireless network via unified protocol stack. In one embodiment a wireless networking system includes a wireless device. The wireless device includes a first wireless transceiver, a second wireless transceiver, a processor, and a unified protocol stack. 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 unified protocol stack includes first protocols defined for accessing the first wireless network and second protocols defined for accessing the second wireless network. The unified protocol stack includes instructions that cause the processor to access the first wireless network via the first wireless transceiver using one of the second protocols.Type: ApplicationFiled: October 26, 2011Publication date: May 3, 2012Applicant: TEXAS INSTRUMENTS INCORPORATEDInventors: Leonardo W. ESTEVEZ, Yanjun SUN, Ramanuja VEDANTHAM, Ariton E. XHAFA
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Publication number: 20120106381Abstract: A system and method for reducing power consumption of a wireless device operating as a soft access point. In one embodiment, a wireless device includes a soft access point controller that configures the wireless device to operate as a group owner in a peer-to-peer wireless local area network. The soft access point controller includes a beacon controller. The beacon controller is configured to transmit beacon frames at a first periodic interval. The beacon controller is also configured to extend a discovery interval of a wireless station by transmitting acknowledgement packets at a second periodic interval. The second periodic interval is shorter than the first periodic interval and shorter than a minimum discovery scan timeout of the wireless station.Type: ApplicationFiled: November 2, 2011Publication date: May 3, 2012Applicant: TEXAS INSTRUMENTS INCORPORATEDInventors: Ramanuja VEDANTHAM, Xiaolin LU, Assaf SELLA, Josef PEERY, Ariton E. XHAFA, Yanjun SUN
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Publication number: 20120051345Abstract: An integrated circuit includes logic configured to adjust an original service time of a first Wi-Fi Basic Service Set connection (“BSS”), out of a plurality of BSSs configured to be associated with a communication device, to an adjusted service time based on a time until beacon transmission or reception in any of the plurality of BSSs. At least one of the plurality of BSSs can support a peer-to-peer connection.Type: ApplicationFiled: June 22, 2011Publication date: March 1, 2012Applicant: TEXAS INSTRUMENTS INCORPORATEDInventors: Ramanuja VEDANTHAM, John W. THOMAS, Xiaolin LU, Ariton E. XHAFA, Yanjun SUN