Patents Examined by Xavier Wong
  • Patent number: 10270890
    Abstract: A wireless station of a wireless network generates a single layer-2 frame containing multiple layer-3 packets in its payload. Each of the multiple layer-3 packets is destined to a corresponding different destination. The wireless station transmits the layer-2 frame to an access point (AP) of the wireless network. The AP receives the layer-2 frame, disassembles the payload into individual layer-3 packets, and transmits each of the individual layer-3 packets separately towards the corresponding destinations. In an embodiment, the wireless network is according to IEEE 802.11 standards, each layer-3 packet is an IP packet, and the layer-2 frame is a MAC frame.
    Type: Grant
    Filed: July 13, 2015
    Date of Patent: April 23, 2019
    Inventors: Pankaj Vyas, Vishal Batra
  • Patent number: 10158463
    Abstract: A method and system to manage coordinated transmission of data in a wireless communication system. When a serving base station receives data of a particular class for transmission to a user equipment device (UE), the serving base station transmits the received data to the UE and sends a proper subset of the received data to a neighboring base station for the neighboring base station to also transmit to the UE optimally concurrently with the serving base station's transmission of the proper subset. To help comply with a policy in place at the neighboring base station, the serving base station decides how much of the received data to send to the neighboring base station as the proper subset by (i) determining what scheduling weight the neighboring base station is set to apply for data of the particular class and (ii) applying that determined scheduling weight to the received data.
    Type: Grant
    Filed: March 17, 2015
    Date of Patent: December 18, 2018
    Assignee: Sprint Spectrum L.P.
    Inventors: Siddharth S. Oroskar, Jasinder P. Singh, Suryanarayanan Ramamurthy
  • Patent number: 10154462
    Abstract: The present disclosure relates to a CDMA communication node arrangement comprising at least two spatially separated antenna units, at least one radio unit and at least one control unit. Each antenna unit has at least one corresponding coverage area and is connected to the central unit. The control unit is arranged to alter transmitting properties of at least a first antenna unit, to a user terminal, such that more or less power is transmitted by the first antenna unit in a dedicated channel. The control unit is arranged to monitor received inner power control loop commands when at least a second antenna unit is communicating with the user terminal, and to determine whether said first antenna unit should start or stop communicating with the user terminal, or continue as before, based on how the inner power control loop commands respond. The present disclosure also relates to a corresponding method.
    Type: Grant
    Filed: December 12, 2014
    Date of Patent: December 11, 2018
    Inventors: Benny Bentland, Anders Lamm
  • Patent number: 9973599
    Abstract: A parser is used for parsing a header in a packet. The parser includes a plurality of horizontal field selectors, a plurality of comparators, and a content addressable memory (CAM) based device. Each of the horizontal field selectors is configured to select a first bit group. The comparators are coupled to the horizontal field selectors, respectively. Each of the comparators is configured to compare a first bit group selected by a corresponding horizontal field selector with a designated value to generate a comparison result. The CAM based device is configured to receive a plurality of comparison results generated from the comparators, and use the comparison results as a first input search data.
    Type: Grant
    Filed: October 22, 2014
    Date of Patent: May 15, 2018
    Assignee: MEDIATEK INC.
    Inventors: Kuo-Cheng Lu, Yuan-Cheng Chuang
  • Patent number: 9955387
    Abstract: A method of managing modulation for transmission of data in anticipation of handover. When a source base station is serving a UE and determines that the UE is going to hand over to a target base station, the source base station automatically transitions to transmit data to the UE with a low-order MCS selected without regard to CQIs reported by the UE, or at least to apply an MCS corresponding with a CQI lower than that reported by the UE. By applying a low-order MCS to transmit data to the UE, the source base station may increase the likelihood that the data will arrive successfully at the UE, as the low-order MCS may be more tolerant to noise than higher-order MCSs.
    Type: Grant
    Filed: May 16, 2013
    Date of Patent: April 24, 2018
    Assignee: Sprint Spectrum L.P.
    Inventors: Maulik K. Shah, John W. Prock, Jasinder P. Singh, Siddharth S. Oroskar
  • Patent number: 9681325
    Abstract: Channel and interference measurement in long term evolution (LTE)/LTE-Advanced (LTE-A) networks including unlicensed spectrum is discussed in which a user equipment (UE) detects a reference signal from a serving base station over a carrier of a shared spectrum for measurement. The reference signal may be a channel usage beacon signal (CUBS) transmitted by the serving base station prior to transmission or may be a specific channel state information (CSI) reference signal transmitted in the first subframe of a transmission frame. The UE generates a fast CSI feedback report based on the measured reference signal and transmits it to the serving base station. The fast CSI feedback report is received quickly enough by the serving base station such that the base station may apply the CSI feedback to additional transmissions in subsequent subframes within the same transmission frame.
    Type: Grant
    Filed: November 24, 2014
    Date of Patent: June 13, 2017
    Assignee: QUALCOMM Incorporated
    Inventors: Wanshi Chen, Durga Prasad Malladi, Tao Luo, Peter Gaal, Yongbin Wei, Hao Xu, Tingfang Ji, Srinivas Yerramalli, Naga Bhushan, Aleksandar Damnjanovic
  • Patent number: 9503285
    Abstract: Various aspects disclosed are directed to improvements to channel estimation through more efficient cancelation of neighboring common reference signals (CRS). Cancelation of CRS from other cells allows the user equipment (UE) a better opportunity for accurately detecting the reference signal of the current cell. Alternative aspects have a recursive element that uses previous estimates as the basis for the current channel estimate. The various aspects of the present disclosure generally have two alternative embodiments: (1) initializing the channel estimation for all cells with a previous channel estimate and cancellation of reference signals of non-target cells to accurately update channel estimate of the target cell; and (2) initializing the channel estimate for all cells with a previous channel estimate and cancelation of reference signals of all cells to accurately estimate residual channel estimate of the target cell and update its channel estimate.
    Type: Grant
    Filed: August 1, 2011
    Date of Patent: November 22, 2016
    Assignee: QUALCOMM Incorporated
    Inventors: Taesang Yoo, Tao Luo
  • Patent number: 9467962
    Abstract: A trusted non-3GPP access network element and a method for accessing a mobile network and detachment are disclosed. The method for accessing a mobile network includes: a TNAN network element receives an extensible authentication protocol (EAP) authentication success message or an EAP authentication success triggering message, and then establishes a session with a packet data network gateway (P-GW) of a mobile network; and the TNAN network element receives an IP address request message from user equipment and then allocates an IP address consistent with the packet data network (PDN) type requested by the user equipment to the user equipment.
    Type: Grant
    Filed: September 21, 2012
    Date of Patent: October 11, 2016
    Assignee: ZTE Corporation
    Inventors: Guoyan Liu, Chunhui Zhu, Shuang Liang, Yangwei Tu
  • Patent number: 9215162
    Abstract: A system and method of transmitting and receiving information pertaining to biological sequence data is disclosed. The method includes receiving, at a network interface of a node of a network, a data packet including a first header containing network routing information and a second header associated with a layered model representative of the biological sequence data. The method also includes parsing the data packet and separating the first header from the second header.
    Type: Grant
    Filed: March 9, 2012
    Date of Patent: December 15, 2015
    Assignee: Annai Systems Inc.
    Inventors: Lawrence Ganeshalingam, Patrick Nikita Allen
  • Patent number: 9195961
    Abstract: A system, method, and computer program product are provided for generating channel specific heuristics. In use, at least one channel filter including a characteristic associated with a communications channel is identified. Additionally, the at least one channel filter is applied to at least one design heuristic. Furthermore, at least one channel specific heuristic is generated based on the application of the at least one channel filter to the at least one design heuristic.
    Type: Grant
    Filed: November 30, 2009
    Date of Patent: November 24, 2015
    Assignee: Amdocs Software Systems Limited
    Inventors: Mark Weinberg, Dov Rosner
  • Patent number: 9013998
    Abstract: Disclosed are various embodiments for estimating round-trip times to improve performance of networks. Multiple connections are opened to a network device. Round-trip times associated with sending packets to the network device via the connections are measured. Another connection to the same or a different network device is opened. A round-trip-time estimate for the other connection is initialized based at least in part on the measured round-trip times for the multiple connections, and in some embodiments, network device proximity data.
    Type: Grant
    Filed: August 20, 2012
    Date of Patent: April 21, 2015
    Assignee: Amazon Technologies, Inc.
    Inventors: Pradeep Vincent, Michael David Marr, Matthew D. Klein, Samuel J. McKelvie
  • Patent number: 8797925
    Abstract: A method, NodeB and User Equipment for TDD operation in a communication system operating in TDD mode in a frequency band allocated for FDD operation. Preferably, operation is in TDD uplink and downlink mode in a first frequency band designated or normally used for FDD uplink communication, and in TDD downlink-only mode in a second frequency band designated or normally used for FDD downlink communication. The invention provides the following advantages: Provides a flexible method to deploy a time division duplex architecture in frequency division duplex spectrum. Allows flexible use of system capacity by adjusting the uplink and downlink capacity split. Removes previous FDD duplex restrictions.
    Type: Grant
    Filed: October 1, 2013
    Date of Patent: August 5, 2014
    Assignee: Sony Corporation
    Inventors: William John Jones, Joseph Chung Shing Cheung, Alan Edward Jones
  • Patent number: 8687534
    Abstract: A method and system for managing an inactive interval of a Base Station (BS) are provided, in which the BS transmits a preferred Low-Duty Mode (LDM) pattern to a coordination server that manages LDM patterns of BSs, receives an LDM pattern from the coordination server, the LDM pattern being determined for the BS by the coordination server, taking into account the preferred LDM pattern and LDM patterns of neighbor BSs, and operates in an active interval and an inactive interval according to the received LDM pattern.
    Type: Grant
    Filed: December 22, 2010
    Date of Patent: April 1, 2014
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Eun-Sil Hong, Hyeong-Jong Ju, Hyo-Jin Lee, Hoon Chang
  • Patent number: 8588086
    Abstract: Reverse link data rate indications in wireless communication systems are defined with low identification overhead. Existence of a pilot signal is leveraged in order to reduce the overhead for identifying and selecting the reverse link data rate. At least two distinguishable pilot signals are defined, in which, based on the particular pilot signal present in the transmitted frame, at least one rate set from the multiple available rate sets can be determined. Reverse rate information in the transmitted frame is then used to identify which specific data rate within the determined rate set is used. Based on the identified data rate, the receiver may then decode the payload data in the transmitted frame.
    Type: Grant
    Filed: November 30, 2009
    Date of Patent: November 19, 2013
    Assignee: QUALCOMM Incorporated
    Inventors: Bin Tian, Ahmad Jalali, Srikant Jayaraman, June Namgoong
  • Patent number: 8542579
    Abstract: User cooperation in wireless networks implemented on the Network Protocol layer level attains a higher stable throughput and improved transmission delay. The cooperation is designed between a set of source user nodes transmitting to a common destination, where users with channels providing a higher successful delivery probability, in addition to their own traffic, relay packets of other source users whose transmissions to the destination fails. Each source user node is provided with an ample queue buffer having capacity to accumulate packets inadvertently received from other users in the system in addition to its own packets. Ranking mechanism facilitates in determining the “quality” of wireless channels, and the Acknowledgement mechanism facilitates in coordination of the transmissions in the system. The nodes exchange information on the queues status, and decision is made by a scheduling controller on the priority of transmission.
    Type: Grant
    Filed: November 17, 2010
    Date of Patent: September 24, 2013
    Assignee: University of Maryland
    Inventors: Beiyu Rong, Anthony Ephremides
  • Patent number: 8363535
    Abstract: A cancellation system is disclosed for processing incoming and outgoing signals in a transform domain to create a cancellation signal for reducing or removing unwanted interference. Data is ordered based on Good-Thomas indexing into a two dimensional array in a buffer. The two dimensional array may have lr rows and lw columns. From the buffer, the columns of data undergo a Winograd small transform. The rows of data undergo a Cooley-Tukey operation to complete the transform operation into the frequency domain. Multipliers scale the transformed data to generate a cancellation signal in the frequency domain. Inverse (Cooley-Tukey) and Winograd transforms perform inverse processing on the cancellation signal to return the cancellation signal or data to the time domain. Re-ordering the data and combination of the cancellation signal or data with incoming or outgoing signals achieve interference cancellation.
    Type: Grant
    Filed: February 29, 2008
    Date of Patent: January 29, 2013
    Assignee: Marvell International Ltd.
    Inventors: Gavin D. Parnaby, George A. Zimmerman, Chris Pagnanelli, William W. Jones
  • Patent number: 8089909
    Abstract: Provided is a method of transmitting/receiving data in a sensor node for reducing overhearing of sensor nodes, and a sensor network which implements the method. A sender node having transmission data from among a plurality of nodes which perform a low power listening (LPL) operation in an asynchronous manner at predetermined time intervals, generates a long preamble including short preambles, each having information including a destination address of the transmission data, a remainder of the long preamble, and a length of the transmission data, and sequentially transmits the second preamble and the transmission data. A receiver node from among the plurality of nodes determines whether a valid signal is sensed during an active state in the LPL operation. If it is determined that the valid signal is sensed, the receiver node receives the short preamble transmitted from the sender node.
    Type: Grant
    Filed: April 29, 2008
    Date of Patent: January 3, 2012
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Se Han Kim, Kyeseon Lee, Chong-Ho Yoon, Gang-Ho Byun, Nae-Soo Kim, Cheol Sig Pyo
  • Patent number: 7668145
    Abstract: The invention proposes a method for controlling a connection between a first network node and a second network node, wherein the connection is controlled by a packet filtering function filtering packets such that a packet is discarded in case a source address and/or a destination address do not comply with a filtering rule, wherein the packet filtering function is configured at a connection set up, and at least one of the first or second network node is adapted to change its address, the method comprising the steps of informing, the packet filtering function about the new address of the network node having changed its address, and updating the packet filter of the packet filtering function by using the new address of the network node having changed its address. The invention also proposes a corresponding network system comprising at least a network node and a packet filtering network element. Furthermore, the invention proposes a corresponding packet filtering network device.
    Type: Grant
    Filed: June 3, 2004
    Date of Patent: February 23, 2010
    Assignee: Nokia Corporation
    Inventors: Franck Le, Stefano Faccin, Rene Purnadi, Sandro Grech
  • Patent number: 7626971
    Abstract: By separating a function responsible for a control plane and a function responsible for a user plane into physically independent devices, a radio access network system, in which expandability and flexibility of a network is enhanced, is obtained. In the radio access network (RAN) system, the RAN is so designed that a server responsible for the control plane (CPS) and a server responsible for the user plane (UPS) are physically separated from each other. In response to an external request, a logical connection is set between the CPS and the UPS. For identification of the logical connection, mapping between a mobile unit or a radio bearer and the logical connection is managed using a logical connection ID. Thus, the CPS and UPS can independently be added or removed in a system configuration, thus enhancing the scalability of a mobile communication system.
    Type: Grant
    Filed: June 13, 2003
    Date of Patent: December 1, 2009
    Assignee: NEC Corporation
    Inventor: Satoshi Noma
  • Patent number: 7619984
    Abstract: A method for error handling of corrupted repeating primitives during frame reception is disclosed. The method comprises identifying a portion of a received frame including a repeating primitive sequence, determining whether data in the repeating primitive sequence has one or more errors, and indicating a successful reception of the received frame with the one or more errors in the repeating primitive sequence if the number of errors is less than a determined threshold. Other embodiments are also disclosed.
    Type: Grant
    Filed: August 30, 2005
    Date of Patent: November 17, 2009
    Assignee: Intel Corporation
    Inventor: Richard D. Carmichael