Patents Examined by Chi Pham
  • Patent number: 8891387
    Abstract: In a communication system, user equipment (UE) conditionally performs uplink transmit diversity (ULTD) either by Switched Antenna Transmit Diversity (SATD) or Beamforming Transmit Diversity (BFTD) using a first antenna and a second antenna. Either a serving node or the UE determines that uplink transmit diversity is conditionally authorized. Either a serving node or the UE measures a value. The UE transmits using ULTD in response to determining that an enabling condition based on the value is satisfied. The UE can also disable uplink transmit diversity in response to determining that a disabling condition based on the value is satisfied. The disabling condition comprises a disabling threshold that equals the enabling condition comprising an enabling threshold with a threshold adjustment for hysteresis.
    Type: Grant
    Filed: April 29, 2011
    Date of Patent: November 18, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Bibhu Prasad Mohanty, Sharad Deepak Sambhwani, Chengjin Zhang, Daniel F. Filipovic, Ravi Agarwal, Jilei Hou, Rohit Kapoor
  • Patent number: 8891351
    Abstract: An apparatus generally having a first circuit and a second circuit is disclosed. The first circuit may be configured to generate (i) a plurality of first code bits in response to an index value and (ii) a plurality of first intermediate bits in response to the index value. The first code bits may be generated in parallel with the first intermediate bits. The second circuit may be configured to generate a plurality of second code bits in response to all of (i) the index value, (ii) the first code bits and (iii) the first intermediate bits. A combination of the first code bits and the second code bits generally forms one of a plurality of orthogonal codes.
    Type: Grant
    Filed: September 26, 2011
    Date of Patent: November 18, 2014
    Assignee: Avago Technologies General IP (Singapore) Pte. Ltd.
    Inventors: Leonid Dubrovin, Alexander Rabinovitch, Eliahou Arviv
  • Patent number: 8891373
    Abstract: A method is provided in one example embodiment and includes receiving a plurality of status signals, for a plurality of radio links, at a microwave device; detecting a bandwidth anomaly based on the status signals; and communicating a quality of service (QoS) control signal, which is based on the bandwidth anomaly, to a gateway coupled to at least one of the radio links.
    Type: Grant
    Filed: February 15, 2011
    Date of Patent: November 18, 2014
    Assignee: Cisco Technology, Inc.
    Inventors: Mark Grayson, Rajesh S. Pazhyannur, Kevin D. Shatzkamer
  • Patent number: 8891422
    Abstract: A communication system includes: a communication device having information provision unit for providing information on a communication state; and a communication terminal including information acquisition unit for acquiring the information on the communication state, and wireless LAN communication unit for operating either in a station (STA) mode for connecting with an access point or in an AP mode for operating as the access point (AP) based on the acquired information. The communication terminal connects with the access point in the case that the communication terminal operates in the STA mode, and the communication device connects with the communication terminal in the case that the communication terminal operates in the AP mode.
    Type: Grant
    Filed: April 15, 2011
    Date of Patent: November 18, 2014
    Assignee: Lenovo Innovations Limited (Hong Kong)
    Inventor: Masahito Shinohara
  • Patent number: 8891475
    Abstract: Provided is a method for WLAN service performed by an access point (AP) in a WLAN system including the AP and a plurality of stations (STAs) each of which can associate with the AP, the method comprising: dividing frequency bandwidth of available channel into a plurality of frequency-selective subchannels; receiving, from at least some STAs (first STAs) among the plurality of STAs, CRQ (Contention Resolution reQuest) frame including a signature of the first STAs through at least some of the subchannels, the signature identifying the first STAs; identifying the first STAs using the received CRQ frame; estimating uplink channel quality of the first STAs using the received CRQ frame; allocating subchannels for each of the first STAs; and broadcasting result of subchannel allocation using CRP (Contention Resolution rePly) frame.
    Type: Grant
    Filed: January 7, 2013
    Date of Patent: November 18, 2014
    Assignee: SNU R&DB Foundation
    Inventors: Su Chul Lee, Chong Kwon Kim
  • Patent number: 8885575
    Abstract: A method for wireless communication is provided. The method comprises transmitting a relay downlink control information (R-DCI) block in a plurality of resource blocks.
    Type: Grant
    Filed: March 11, 2010
    Date of Patent: November 11, 2014
    Assignee: BlackBerry Limited
    Inventors: Yi Yu, Zhijun Cai, James Earl Womack
  • Patent number: 8885645
    Abstract: A method is described for transmitting data between participants of a serial, ring-shaped communications arrangement in which the participants are serially connected to one another, wherein a data packet is passed from a participant provided as a master to further participants provided as slaves, wherein the data packet is passed from slave to slave, and wherein address information of the data packet is altered by each slave.
    Type: Grant
    Filed: September 26, 2011
    Date of Patent: November 11, 2014
    Assignee: Robert Bosch GmbH
    Inventors: Andreas-Juergen Rohatschek, Bernd Lutz, Dieter Thoss, Thorsten Huck, Stoyan Todorov
  • Patent number: 8885600
    Abstract: A method to facilitate user equipment (UE) handoff within a packet data communication system includes determining, at a source relay node, that the UE is to undergo a handoff from the source relay node to a target entity and sending, by the source relay node, a first request to a network node serving the UE. The sending is performed responsive to the determination that the UE is to undergo the handoff, such that the first request is configured to cause the network gateway node to store packet data addressed to the UE. Further operations include sending, by the target entity, a second request to the network, such that the second request is configured to cause the network to forward the stored packet data to the target entity, and receiving, at the target entity from the network, the stored packet data for wirelessly transmitting to the UE.
    Type: Grant
    Filed: July 2, 2010
    Date of Patent: November 11, 2014
    Assignee: LG Electronics Inc.
    Inventors: Ki-Dong Lee, Li-Hsiang Sun
  • Patent number: 8885647
    Abstract: Disclosed are an apparatus and a method for swapping headers for authenticating policy based domains and tracing paths at the time of high-reliable data plane transmission. The method includes receiving packets forwarded through predetermined paths, confirming whether the received packets are normal packets, determining whether the path identification information corresponding to the paths of the received packets is present in a header information storage unit of a domain receiving the packets, swapping the headers included in the packets to swapping headers of the header information storage unit by using the identification information if it is determined that the path identification information is present, and correcting the path tracing information. By this configuration, degradation in data plane performance due to the lengths of headers can be solved.
    Type: Grant
    Filed: August 16, 2012
    Date of Patent: November 11, 2014
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Chang Gyu Lim, Tae Yeon Kim, Seung Hyun Yoon, Ho Young Song, Jong Hyun Lee
  • Patent number: 8885541
    Abstract: Systems and methodologies are described that facilitate sending and/or receiving user equipment specific reference signals (UE-RSs) in a wireless communication environment. A UE-RS pattern can be selected, yielded, etc. based upon a number of symbols from a subframe utilized for downlink transmission. At least one time domain component of the UE-RS pattern can vary based upon the number of symbols from the subframe utilized for the downlink transmission. For instance, the at least one time domain component can be punctured, time-shifted, and so forth. Further, UE-RSs can be mapped to resource elements of the subframe as a function of the UE-RS pattern. Moreover, a UE can utilize the UE-RS pattern to detect UE-RSs on the resource elements of the subframe. Further, the UE can estimate a channel based upon the UE-RSs.
    Type: Grant
    Filed: August 2, 2010
    Date of Patent: November 11, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Alexei Yurievitch Gorokhov, Juan Montojo, Amir Farajidana, Kapil Bhattad, Brian Clarke Banister
  • Patent number: 8886248
    Abstract: Necessary transmission power of terminals is secured while suppressing total transmission power in base station, so that FFR technology is realized with high frequency utilization efficiency to thereby realize both of compactness of base station and increase of communication capacity. Frequency resource is divided into frequency for boundary area of cell and frequency for central area of cell. Transmission power per unit frequency is fixed in the frequency for boundary area of cell and is set to be variable in the frequency for central area of cell. Transmission power per unit frequency is adjusted so as to satisfy necessary power of terminals connected to frequency for central area of cell. When it is judged that total transmission power of base station exceeds prescribed value, terminal is moved from central area to boundary area of cell, so that total transmission power is suppressed to be equal to or smaller than standard.
    Type: Grant
    Filed: June 12, 2012
    Date of Patent: November 11, 2014
    Assignee: Hitachi, Ltd.
    Inventors: Tatsunori Ohara, Mikio Kuwahara, Hajime Kanzaki, Tsukasa Sasayama
  • Patent number: 8885487
    Abstract: Offering vertical services to subscribers and service providers is an avenue to immediately improve the competitiveness of digital subscriber line access service, for example of the type offered by a local exchange carrier. To deliver high-quality vertical services, however, the underlying ADSL Data Network (ADN) or the like needs to establish Quality of Service (QoS) as a core characteristic and offer an efficient mechanism for insertion of the vertical services. The inventive network architecture introduces QoS into the ADN, in a manner that enables the delivery of sophisticated and demanding IP-based services to subscribers, does not affect existing Internet tiers of service, and is cost-effective in terms of initial costs, build-out, and ongoing operations.
    Type: Grant
    Filed: September 17, 2010
    Date of Patent: November 11, 2014
    Assignee: Verizon Patent and Licensing Inc.
    Inventors: Eric A. Voit, Robert T. Baum, Jeffrey I. Winter
  • Patent number: 8885557
    Abstract: To reduce the effectiveness of eavesdropping attacks, a filler such as one utilized in a data frame for link-layer LAPDm signaling may be dynamically selected to utilize a first bit pattern (first filler) generated utilizing a first algorithm when the transmissions are unencrypted, and to utilize a second bit pattern (second filler) generated utilizing a second algorithm different from the first algorithm when the transmissions are encrypted.
    Type: Grant
    Filed: September 23, 2011
    Date of Patent: November 11, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Simon Walke, Nicholas J. Tebbit, Mungal S. Dhanda
  • Patent number: 8879402
    Abstract: A wireless communication device includes a data transmission and reception section that wirelessly transmits a plurality of test packets; a signal sensing section that senses a power of a spatial radio wave signal on a frequency channel that is the same as the plurality of test packets and outputs sample data of the sensed spatial radio wave signal; a calculation processing section that converts the sample data into time series sample data; a collision detection section that calculates a packet collision rate based on the number of packet collisions and the number of the plurality of test packets if there is a packet collision due to interference of the plurality of test packets with another communication; and a control section that adjusts a parameter that the data transmission and reception section uses based on a calculation result of the collision detection section.
    Type: Grant
    Filed: June 12, 2012
    Date of Patent: November 4, 2014
    Assignee: NEC Communication Systems, Ltd.
    Inventors: Peng Shao, Stefan Aust, Akira Matsumoto, Tetsuya Ito, Peter Davis
  • Patent number: 8879502
    Abstract: A system and method for handing off from a first network to a second network. A determination may be made as to whether an accessible base station of the second network is located in the vicinity of a user equipment based on information on a current location of the user equipment in the first network. An activation call may be generated with a first telephone number as a caller number when an accessible base station of the second network is located in the vicinity of the user equipment based on the determination result. The activation call indicates an initiation of a search for an accessible base station of the second network, and an accessible base station of the second network may be searched for when the activation call with the first telephone number is received. A handoff from the first network to the second network may then be executed when the accessible base station of the second network is located.
    Type: Grant
    Filed: June 29, 2011
    Date of Patent: November 4, 2014
    Assignee: KT Corporation
    Inventors: Woo-Jin Choi, Eun-Kyoung Paik, Seong-Choon Lee
  • Patent number: 8879512
    Abstract: Provided is a mobile station device which can increase the success ratio and reduce a communication delay when transmitting a dedicated preamble from the mobile station device to a base station device by using a random access channel (RACH). The mobile station device performs random access to the base station device by using a dedicated preamble. The mobile station device transmits a first message by using the dedicated preamble and again transmits the first message using the dedicated preamble during a period (a random access response reception-uncertain period) when the base station device may transmit a second message as a response to the first message.
    Type: Grant
    Filed: August 8, 2008
    Date of Patent: November 4, 2014
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Yasuo Sugawara, Shohei Yamada, Yasuyuki Kato, Daiichiro Nakashima
  • Patent number: 8873517
    Abstract: The present invention eliminates a transmission-waiting operation which is unnecessary while accommodating a prioritized traffic. Although a communication station enters a transmission-disallowed state in response to detection of a signal addressed to another station in accordance with medium access control based on CSMA, if the communication station receives a frame transmitted with priority to a local station during the transmission waiting, it cancels the transmission-disallowed state, sends back a frame responding the frame transmitted with priority and effectively operates a transmission prioritized period. The communication station starts a search procedure to perform a processing of evading duplication of the transmission prioritized periods if it judges a possibility of a problem occurring in a time zone in which reception with priority is possible.
    Type: Grant
    Filed: December 21, 2011
    Date of Patent: October 28, 2014
    Assignee: Sony Corporation
    Inventors: Kazuyuki Sakoda, Kenzo Nishikawa, Yuichi Morioka, Mitsuhiro Suzuki
  • Patent number: 8873449
    Abstract: Example methods and apparatus to maintain call continuity are disclosed. A disclosed example method to authorize a request with service information (SI), including detecting whether the SI pertains to an existing Internet Packet (IP) flow, when the SI pertains to an existing IP flow, detecting whether the existing IP flow includes circuit switched (CS) media, and when the existing IP flow includes CS media, determining a response to the request independent of a CS media indicator.
    Type: Grant
    Filed: August 18, 2011
    Date of Patent: October 28, 2014
    Assignee: BlackBerry Limited
    Inventors: Stefano Faccin, Jan Hendrik Lucas Bakker, Chen Ho Chin, Richard Charles Burbidge
  • Patent number: 8873478
    Abstract: The equipment and techniques disclosed herein introduce a deferred acknowledgement (DACK), in the context of a protocol for a wireless station to request and obtain access to a wireless network resource for communication of one or more data packets. Essentially, a network node, such as a wireless base station, sends the DACK instruction in response to the access request telling the requesting station that the node has heard the request but that the requesting station should defer its transmission. The requesting station need not back off and re-initiate its access request. Instead, the requesting station waits for a later acknowledgement (ACK) granting access to a resource as requested. Although the DACK provides additional signaling, this technique can still utilize a fast ACK type message, that is to say a relatively short signaling packet.
    Type: Grant
    Filed: December 10, 2010
    Date of Patent: October 28, 2014
    Assignee: Google Inc.
    Inventor: Emmanuel Kanterakis
  • Patent number: 8873400
    Abstract: Femto base stations and methods described herein suppress the need for an external GPS antenna and cable, while still providing a network service provider with the ability to obtain the desired GPS location coordinates and the user with the flexibility of placing the femto cell at the location of their choice within a home regardless of GPS signal strength.
    Type: Grant
    Filed: June 22, 2011
    Date of Patent: October 28, 2014
    Assignee: Alcatel Lucent
    Inventor: Paul Polakos