Patents by Inventor Apostolos Papathanassiou

Apostolos Papathanassiou 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).

  • Patent number: 8861443
    Abstract: Wireless-device-to-wireless device (WD-WD) interference in a full-duplex wireless network is managed by an uplink transmit power control technique that minimizes interference experienced in downlink signals at other wireless devices in the wireless network. In one exemplary embodiment, an instantaneous antenna gain of the wireless device and a target uplink Signal-to-Interference-plus-Noise Ratio (SINR) of an uplink signal of the wireless device to the home base station are determined at the wireless device. A Noise plus Interference level at the home base station is received by either a closed-loop or an open-loop feedback technique. The uplink power level for an uplink signal of the wireless device is determined based on the determined antenna gain, the determined target uplink SINR and the received Noise plus Interference level at the home base station.
    Type: Grant
    Filed: September 20, 2012
    Date of Patent: October 14, 2014
    Assignee: Intel Corporation
    Inventors: Hooman Shirani-Mehr, Yang-Seok Choi, Rongzhen Yang, Apostolos Papathanassiou
  • Publication number: 20140301354
    Abstract: Embodiments for providing virtual carrier sensing for LTE are generally described herein. In some embodiments, a first evolved Node B (eNB) sends a notification of subsequent DL transmission to a first UE in a downlink. In the uplink, the first UE sends a confirmation of the received DL notification. A second eNB overhears the confirmation, decodes it and extracts the information of the DL resources that the first eNB is planning to use. If the second eNB is not already transmitting in the indicated DL resources, the second eNB marks the indicated DL resources as busy and refrains from transmitting in those resources. The second eNB may then reschedule its transmission using alternative resources so that interference from the second eNB1 may be avoided.
    Type: Application
    Filed: December 26, 2013
    Publication date: October 9, 2014
    Inventors: Alexei Davydov, Vadim Sergeyev, Gregory Morozov, Apostolos Papathanassiou
  • Publication number: 20140269419
    Abstract: A method to transmit and receive a device-to-device (D2D) discovery signal method is disclosed. The D2D discovery signal method operates using currently defined discovery signals as well as novel discovery signals, such as discovery signals employing a PUCCH-based uplink signal, an SRS-based demodulation and reference signal, or a single tone-based beacon signal. Under the D2D discovery signal method, an enhanced base station (eNB) configures the D2D discovery signal to both the transmitter (TX) user equipment (UE) and the receiver (RX) UE, then activates the D2D discovery signal to the TX and RX UEs, such that D2D signal transmission can thereafter occur from either the eNB or the TX UE, and monitored by the RX UE. Once the eNB deactivates the D2D discovery signal, D2D transmissions between UEs cease. Transmissions to configure, activate, and deactivate the D2D discovery signal can be unicast, multicast, or broadcast.
    Type: Application
    Filed: September 27, 2013
    Publication date: September 18, 2014
    Inventors: Seunghee Han, Hong He, Jong-Kae Fwu, Apostolos Papathanassiou
  • Patent number: 8811144
    Abstract: Technology for user equipment (UE)-specific assigning of demodulation reference signal (DM-RS) sequences to support uplink (UL) coordinated multipoint (CoMP) is disclosed. One method can include a DM-RS sequence assignment device sorting the plurality of UE into a list according to a number of reception point (RP) links for each UE in a CoMP set, and assigning a base DM-RS sequence and a cyclic shift (CS) to a top-ranked UE from the list. The top-ranked UE can have a highest number of RP links. The DM-RS sequence assignment device can repeatedly assign a different CS of the base DM-RS sequence to a plurality of unassigned UE in a same cell as the top-ranked UE, and repeatedly assign the different CS of the base DM-RS sequence to a plurality of unassigned UE in a cooperatively served cell of the top-ranked UE.
    Type: Grant
    Filed: June 29, 2012
    Date of Patent: August 19, 2014
    Assignee: Intel Corporation
    Inventors: Debdeep Chatterjee, Apostolos Papathanassiou, Shahrnaz Azizi
  • Publication number: 20140198764
    Abstract: The techniques introduced here provide for device discovery of a greater number of mobile devices in a mobile network by increasing the multiplexing capacity of the system. The techniques may be applied to device-to-device communication networks and small cells using low power nodes (e.g., pico and femto eNodeB in a 3GPP LTE or LTE advanced network). Additionally, the techniques provide for mapping between a mobile device ID and an orthogonal resource of the discovery signal.
    Type: Application
    Filed: September 27, 2013
    Publication date: July 17, 2014
    Inventors: Seunghee Han, Jong-Kae Fwu, Youn Hyoung Youn Heo, Apostolos Papathanassiou, Hong He
  • Publication number: 20140185550
    Abstract: Embodiments of wireless communication devices and methods for device discovery is generally described herein. Some of these embodiments describe an apparatus having processing circuitry arranged to configure a single-tone discovery signal for transmission in a symbol in a transmission opportunity based on an assignment pattern. The assignment pattern may define frequency positions, for a set of transmission opportunities, at which the apparatus shall transmit discovery signals in the corresponding transmission opportunity. The apparatus may have physical layer circuitry arranged to transmit the single-tone discovery signal in the corresponding transmission opportunity. Other methods and apparatuses are also described.
    Type: Application
    Filed: December 27, 2013
    Publication date: July 3, 2014
    Inventors: Seunghee Han, Apostolos Papathanassiou, Hong He, Jong-Kae Fwu, Alexei Vladimirovich Davydov
  • Publication number: 20140078939
    Abstract: Wireless-device-to-wireless device (WD-WD) interference in a full-duplex wireless network is managed by an uplink transmit power control technique that minimizes interference experienced in downlink signals at other wireless devices in the wireless network. In one exemplary embodiment, an instantaneous antenna gain of the wireless device and a target uplink Signal-to-Interference-plus-Noise Ratio (SINR) of an uplink signal of the wireless device to the home base station are determined at the wireless device. A Noise plus Interference level at the home base station is received by either a closed-loop or an open-loop feedback technique. The uplink power level for an uplink signal of the wireless device is determined based on the determined antenna gain, the determined target uplink SINR and the received Noise plus Interference level at the home base station.
    Type: Application
    Filed: September 20, 2012
    Publication date: March 20, 2014
    Inventors: Hooman Shirani-Mehr, Yang-Seok Choi, Rongzhen Yang, Apostolos Papathanassiou
  • Publication number: 20130326551
    Abstract: Embodiments of techniques and systems for quality of experience (QoE) reporting in wireless systems are described. In some embodiments, user equipment may receive a first value of a first quality of experience (QoE) metric computed during playout of a multimedia asset at the user equipment. The first value may be received at a first layer in a protocol stack of the user equipment from a second layer above the first layer in the protocol stack. The user equipment may provide a first layer report, including data representative of the first value, for wireless transmission from the user equipment to an eNB. Other embodiments may be described and claimed.
    Type: Application
    Filed: November 12, 2012
    Publication date: December 5, 2013
    Inventors: Debdeep Chatterjee, Youn Hyoung Heo, Ozgur Oyman, Apostolos Papathanassiou
  • Patent number: 8599769
    Abstract: Embodiments of the present invention provide an uplink open loop power control system in which interference over thermal information is transmitted to mobile stations. Other embodiments may be described and claimed.
    Type: Grant
    Filed: December 15, 2009
    Date of Patent: December 3, 2013
    Assignee: Intel Corporation
    Inventors: Rongzhen Yang, Wei Guan, Apostolos Papathanassiou, Hujun Yin, Yang-Seok Choi, Yi Hsuan
  • Publication number: 20130294390
    Abstract: An apparatus may include a transceiver operable to receive a downlink message from a base station for a serving cell, the downlink message allocating a set of control parameters. The apparatus may also include a processor circuit communicatively coupled to the transceiver and an uplink power control module operable on the processor circuit to read the set of control parameters, and apply a signal-to-noise-and-interference (SINR) parameter based on the received set of control parameters to determine physical uplink shared channel (PUSCH) power to be applied for a PUSCH transmission. Other embodiments are disclosed and claimed.
    Type: Application
    Filed: December 16, 2011
    Publication date: November 7, 2013
    Inventors: Rongzhen Yang, Kamran Etemad, Hujun Yin, Apostolos Papathanassiou, Xiaogang Chen, Huaning Niu, Alexei Davydov, Yujian Zhang, Yuan Zhu, Jong-Kae Fwu, Qinghua Li, YI HSUAN
  • Publication number: 20130288608
    Abstract: An apparatus and method of allowing user equipment to transmit information directly with other user equipment, using a device-to-device mode is disclosed herein. A device-to-device blank subregion is defined where device-to-device information can be transmitted without interference from other user equipment. The device-to-device blank subregion may be set up such that it is only used in an exclusive mode if a device-to-device cluster is considered highly interfering. A device may join a device-to-device network through the use of a beacon transmission interval, a control transmission interval, and a data transmission interval.
    Type: Application
    Filed: September 28, 2012
    Publication date: October 31, 2013
    Inventors: Jong-Kae Fwu, Alexey Khoryaev, Mikhail Shilov, Apostolos Papathanassiou
  • Publication number: 20130265981
    Abstract: Uplink power control in a macro cell in a wireless network comprises transmitting a reference signal from a base station device to at least one wireless device within the macro cell. The macro cell comprises the base station device and at least one radio transmitter device that is communicatively coupled to and remote from the base station device. The base station device and one or more radio transmitter devices could be selected to be a transmission point, a reception point or a combination thereof, for each wireless device. Information relating to a transmission power of the base station device is also transmitted to the at least one wireless device. An uplink signal is received from the at least one wireless device containing information relating to an uplink power determination that is based on the reference signal and the information relating to the transmission power of the base station device.
    Type: Application
    Filed: September 30, 2011
    Publication date: October 10, 2013
    Inventors: Rongzhen Yang, Apostolos Papathanassiou, Alexei Vladimirovich Davydov, Yuan Y. Zhu, Jin Fu, Kamran Etemad, Hujun Yin, Xiangying Yang, Jong-Kae Fwu
  • Publication number: 20130265975
    Abstract: In accordance with some embodiments, uplink control information, including a channel quality index, may be transmitted using at least two layers. As a result, more information can be provided for use in situations, such as those involving carrier aggregation, where information for a large number of component carriers must all be provided on one primary component carrier.
    Type: Application
    Filed: December 30, 2011
    Publication date: October 10, 2013
    Inventors: Hooman Shirani-Mehr, Shafi Bashar, Jong-Kae Fwu, Xiaogang Chen, Apostolos Papathanassiou
  • Publication number: 20130195025
    Abstract: Disclosed embodiments may include an apparatus having one or more processors coupled to one or more computer-readable storage media. The one or more processors may be configured to transmit and/or receive channel state information reference signal (CSI-RS) resource configuration information, demodulation reference signals (DM-RS), uplink sounding reference signals (SRS), and power control parameters to support uplink coordinated multi-point (CoMP) operations. Other embodiments may be disclosed.
    Type: Application
    Filed: June 28, 2012
    Publication date: August 1, 2013
    Inventors: Debdeep Chatterjee, Kamran Etemad, Rongzhen Yang, Jong-Kae Fwu, Apostolos Papathanassiou
  • Publication number: 20130195028
    Abstract: Systems and techniques for sounding reference signal enhancement to support uplink coordinated multipoint are described herein. A sounding reference signal may be assigned to a user equipment based on a relationship between the user equipment and a cell edge of a cell served by a wireless network device and serving the user equipment.
    Type: Application
    Filed: August 27, 2012
    Publication date: August 1, 2013
    Inventors: Apostolos Papathanassiou, Shahrnaz Azizi
  • Publication number: 20130188501
    Abstract: Examples are disclosed for determining, at a base station, a target received power parameter for a wireless device in communication with the base station. In some examples, the target received power parameter may be determined based on one or more uplink status signals received from the wireless device at the base station and/or one or more other base stations. For these examples, the wireless device may adjust one or more transmit power levels responsive to receiving the target received power parameter from the base station. Other examples are described and claimed.
    Type: Application
    Filed: June 26, 2012
    Publication date: July 25, 2013
    Applicant: INTEL CORPORATION
    Inventors: Rongzhen Yang, Apostolos Papathanassiou
  • Publication number: 20130156075
    Abstract: Briefly, in accordance with one or more embodiments, a codebook for wireless transmissions may be generated by dividing a codebook into a fixed set of codewords and an adaptive set of codewords. The adaptive set of codewords may be scaled to cluster together and then rotated to be centered or nearly centered about a target. The adaptive set of codewords may then be merged with the fixed set of codewords to provide a hybrid codebook. A codeword from the hybrid codebook may be selected for precoding a transmission to provide a minimum, or nearly minimum, quantization error.
    Type: Application
    Filed: June 21, 2012
    Publication date: June 20, 2013
    Inventors: Hooman Shirani-Mehr, Debdeep Chatterjee, Apostolos Papathanassiou, Peter J. Smith, Mansoor Shafi, Abdulla Firag
  • Publication number: 20130114523
    Abstract: Technology for user equipment (UE)-specific assigning of demodulation reference signal (DM-RS) sequences to support uplink (UL) coordinated multipoint (CoMP) is disclosed. One method can include a DM-RS sequence assignment device sorting the plurality of UE into a list according to a number of reception point (RP) links for each UE in a CoMP set, and assigning a base DM-RS sequence and a cyclic shift (CS) to a top-ranked UE from the list. The top-ranked UE can have a highest number of RP links. The DM-RS sequence assignment device can repeatedly assign a different CS of the base DM-RS sequence to a plurality of unassigned UE in a same cell as the top-ranked UE, and repeatedly assign the different CS of the base DM-RS sequence to a plurality of unassigned UE in a cooperatively served cell of the top-ranked UE.
    Type: Application
    Filed: June 29, 2012
    Publication date: May 9, 2013
    Inventors: DEBDEEP CHATTERJEE, APOSTOLOS PAPATHANASSIOU, SHAHRNAZ AZIZI
  • Publication number: 20130109432
    Abstract: Techniques are described that provide uplink power control techniques that can support different uplink multi-input multi-output (MIMO) transmission schemes. Open and closed loop power control schemes can be used to prescribe the power level of the mobile station.
    Type: Application
    Filed: December 21, 2012
    Publication date: May 2, 2013
    Inventors: Rongzhen Yang, Apostolos Papathanassiou, Hujun Yin, Yang-Seok Choi, Wei Guan
  • Patent number: 8340593
    Abstract: Techniques are described that provide uplink power control techniques that can support different uplink multi-input multi-output (MIMO) transmission schemes. Open and closed loop power control schemes can be used to prescribe the power level of the mobile station.
    Type: Grant
    Filed: November 10, 2009
    Date of Patent: December 25, 2012
    Assignee: Intel Corporation
    Inventors: Rongzhen Yang, Apostolos Papathanassiou, Hujun Yin, Yang-seok Choi, Wei Guan