Failure Compensation (e.g., Spare Channel) Patents (Class 455/8)
  • Patent number: 10271380
    Abstract: Scalable telecommunications systems and methods are provided. In one embodiment, a node unit for a scalable telecommunications system comprises: a plurality of universal digital RF transceivers each configured to communicatively couple the node unit to external equipment; one or more universal digital transport interfaces each configured to communicatively couple the node unit to a respective transport link; a universal backplane communicatively coupled to the universal digital RF transceivers and universal digital transport interfaces; and a system controller; wherein each of the universal digital RF transceivers is configured to couple to a respective modular power amplifier and a modular duplexer inserted within the node unit.
    Type: Grant
    Filed: June 29, 2017
    Date of Patent: April 23, 2019
    Assignee: Andrew Wireless Systems GmbH
    Inventors: Alfons Dussmann, Thomas Kummetz, Peter Schmid, Karl-Heinz Fackler
  • Patent number: 10256926
    Abstract: The present disclosure provides a method for configuring a communication system with a variable attenuator. The method includes measuring a first attenuation accuracy of the communication system at a first attenuation rate of the variable attenuator, and setting the variable attenuator based on the first attenuation accuracy so that the variable attenuator has a second attenuation rate and the communication system has a second attenuation accuracy. The method further includes obtaining a plurality of first gains at first temperatures and first frequencies, and performing an interpolation process to obtain, from the plurality of first gains, a plurality of second gains at second temperatures and/or second frequencies. The method also includes building a three-dimensional gain table with respect to the temperature, the frequency and the attenuation rate.
    Type: Grant
    Filed: April 2, 2018
    Date of Patent: April 9, 2019
    Assignee: MICROELECTRONICS TECHNOLOGY, INC
    Inventors: Ruei-Yuen Chen, Hsiang-Hao Sung
  • Patent number: 9467110
    Abstract: An electronic system of a hybrid amplifier is described, especially electroacoustic hybrid amplifier comprising a tube voltage amplifier, a tube isolating repeater, a power repeater, and a power repeater power supply, a voltage amplifier power supply, and an isolating repeater power supply.
    Type: Grant
    Filed: September 24, 2015
    Date of Patent: October 11, 2016
    Inventor: Piotr Nawrocki
  • Patent number: 9100988
    Abstract: A first Mobile Repeater System (MRS), configured to serve as an access point associated with a Basic Service Set (BSS), broadcasts a Basic Service Set Identifier (BSSID). Other Mobile Repeater Systems (MRSs) join the BSS to create a local ad hoc trunked site in which each of the MRSs are communicatively coupled via at least one WLAN communication link. These MRSs include the first MRS and a second MRS. The first MRS can be configured to provide a control channel for communication with a first subscriber unit, and the second MRSs can be configured to provide a first trunked traffic channel for communication with the first subscriber unit.
    Type: Grant
    Filed: October 22, 2012
    Date of Patent: August 4, 2015
    Assignee: MOTOROLA SOLUTIONS, INC.
    Inventors: Roger M. Vilmur, Eilon Eyal, Leslie G. Gustafson, Doron Nadjar, Salomon Serfaty
  • Patent number: 9026044
    Abstract: Responder-aware relay station selection in a wireless communication network is provided. One implementation includes evaluating operational parameters of multiple candidate wireless relay stations, and selecting a wireless relay station among the multiple candidate wireless relay stations based on the evaluation. A wireless communication is transmitted to the selected wireless relay station over a wireless communication medium.
    Type: Grant
    Filed: March 31, 2011
    Date of Patent: May 5, 2015
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Ju-Lan Hsu, Huai-Rong Shao, Chiu Ngo
  • Patent number: 9026036
    Abstract: The invention is directed to a method and system for supporting wireless RF services over a wired digital data network infrastructure, such as an Ethernet network. The system includes a control unit that can be connected to a base station that supports one or more wireless RF services. The control unit converts the wireless RF signals to an intermediate frequency (IF) that does not interfere with the data network signals and combines the IF signals onto the cable run to a remote network device on the digital data network. The remote network device includes a multiplexer or a low pass filter and a high pass filter that separates the IF signals from the digital data signals on the downlink and combines the IF signals with digital data signals on the uplink over the cable run. The IF signals can be input to an RF module connected to the remote network device which converts the IF signals back to the original RF signals for transmission by a transceiver to wireless devices.
    Type: Grant
    Filed: November 24, 2010
    Date of Patent: May 5, 2015
    Assignee: Corning Optical Communications Wireless Ltd.
    Inventors: Ofer Saban, Isaac Shapira, Ami Hazani, Nissim Atias, Dror Ben Shlomo
  • Patent number: 9002018
    Abstract: The present invention is a computer-implemented key exchange system and methods for improving the usability of encryption technologies such as Public Key Infrastructure (PKI). One aspect of the present invention includes registering users, verifying user identity, and classifying users such that the users may send a communications such that communication recipients can verify the user identity and classification of the communication sender. Another aspect of the present invention includes users initiating relationships with other users, approving the establishment of relationships, and exchanging encryption keys between users after the establishment of a relationship.
    Type: Grant
    Filed: February 7, 2011
    Date of Patent: April 7, 2015
    Assignee: Sync Up Technologies Corporation
    Inventors: John Wilkins, Michael Keefe, Sam Rehman
  • Patent number: 8973060
    Abstract: There is provided a method where a terminal amplifies an MBS signal that the terminal receives using a terminal in an MBS service, transmits the amplified signal to another terminal and controls it in order to overcome the fact it is not possible to provide high quality contents over a broad area due to interference signals between MBS zones, a terminal is used as a repeater at MBS transmission time only, and an output of a repeating signal of the terminal is controlled so that an excessive interference signal for another MBS area is not generated when the terminal operates as a repeater.
    Type: Grant
    Filed: November 4, 2011
    Date of Patent: March 3, 2015
    Assignee: Electronics and Telecommunications Research Institute
    Inventor: Young-Il Kim
  • Patent number: 8948771
    Abstract: The present invention proposes methods and devices for mobile communication deployed on shared bands, which enhance reliability of channels such as control channels. According to an aspect thereof, at a communication terminal, a list of channels useable for communication is maintained, information on the usability of a currently used channel is obtained, and it is switched to one of the channels of the list of useable channels if the currently used channel becomes unusable. The invention encompasses also corresponding computer products as well as methods, devices and computer products residing at a network node.
    Type: Grant
    Filed: April 14, 2011
    Date of Patent: February 3, 2015
    Assignee: Broadcom Corporation
    Inventors: Timo Koskela, Sami Hakola, Samuli Turtinen
  • Patent number: 8937867
    Abstract: A communication routing arrangement includes two or more wireless routers coupled to a communication network, and a user device adapted to couple with the communication network through a communication path including at least one of the two or more wireless routers. The communication path between the user device and the communication network is selected based on available resources of the two or more wireless routers.
    Type: Grant
    Filed: June 13, 2011
    Date of Patent: January 20, 2015
    Assignee: Novatel Wireless, Inc.
    Inventors: Thomas G. Polsdorf, Cuong Pham, Anand Gore, Dirk DeSchepper, Ulf Söderberg
  • Patent number: 8934348
    Abstract: A communication routing arrangement includes two or more wireless routers coupled to a communication network, and a user device adapted to couple with the communication network through a communication path including at least one of the two or more wireless routers. The communication path between the user device and the communication network is selected based on available resources of the two or more wireless routers.
    Type: Grant
    Filed: July 30, 2012
    Date of Patent: January 13, 2015
    Assignee: Novatel Wireless, Inc.
    Inventors: Thomas G. Polsdorf, Cuong Pham, Anand Gore, Dirk DeSchepper, Ulf Söderberg
  • Patent number: 8909133
    Abstract: A system and method of monitoring a signal repeating device in a wireless communication system is provided. An operational noise measurement is obtained by measuring a noise value outside of a bandwidth of a first element, but within a bandwidth of a second, subsequent element in a signal path of the device. The operational noise measurement is alternatively obtained by tuning an input band of the device to shift the input band partially or completely outside of a bandwidth of a first element to create an open band or by suppressing an input of an antenna and measuring noise within the open bandwidth of the device. A stored parameter is retrieved and compared to the measured operational noise. Alternatively, a leakage signal of the device may be received at a signal receiver and compared to a reference. The reference is a function of elements of the device in a leakage path of the leakage signal.
    Type: Grant
    Filed: January 20, 2014
    Date of Patent: December 9, 2014
    Assignee: Andrew LLC
    Inventors: Neil T. Hobbs, Nelson C. Schmidt, Jr., Thomas Kummetz, Fred William Phillips
  • Patent number: 8885742
    Abstract: An apparatus and method for transmitting and receiving a demodulation reference signal (DM RS) are disclosed. A method for controlling a base station (BS) to transmit a demodulation reference signal (Demodulation RS or DM RS) in a wireless communication system includes transmitting, by the base station (BS), a DM RS for a relay node (RN) to the relay node (RN) through a specific backhaul subframe to which an extended cyclic prefix (CP) is applied. The DM RS is transmitted over two resource elements (REs) of individual subcarriers having subcarrier frequency indexes 2, 5, 8 and 11 in a frequency axis within a second slot of the specific backhaul subframe.
    Type: Grant
    Filed: October 15, 2010
    Date of Patent: November 11, 2014
    Assignee: LG Electronics Inc.
    Inventors: Han Byul Seo, Eun Sun Kim, Byoung Hoon Kim, Hak Seong Kim, Dae Won Lee
  • Patent number: 8849270
    Abstract: A system includes redundantly configured resources designated as active geo-redundant nodes (AGNs) and standby geo-redundant nodes (SGNs), a set of covered agents (CAs) that rely upon the redundantly configured resources, and a geographic redundancy coverage issuer (GRCI) configured to manage the geo-redundant nodes. The GRCI maintains a CA list identifying a set of subscribers to redundancy management services supported by the GRCI, an AGN list identifying a set of active geo-redundant nodes, and an SGN list identifying a set of standby geo-redundant nodes. The GRCI provides the AGN list and the SGN list to subscriber CAs. In response to receiving a message identifying a failed AGN, the GRCI updates the AGN list to reflect a failed status for the failed AGN and issues an update message to CAs reflecting the failed status for the failed AGN and a transition of an activated SGN to the AGN list.
    Type: Grant
    Filed: July 13, 2012
    Date of Patent: September 30, 2014
    Assignee: United States Cellular Corporation
    Inventors: Claudio Taglienti, Narothum Saxena, Michael Irizarry
  • Patent number: 8849217
    Abstract: There is provided a method, an apparatus and a computer program product, which introduces a phase shift between radiation phase patterns of associated antennas which are applicable in transmitting and/or receiving radio frequency signals simultaneously via an air interface, wherein the phase shift is introduced in order to obtain orthogonality between the associated radio frequency signals.
    Type: Grant
    Filed: June 22, 2011
    Date of Patent: September 30, 2014
    Assignee: Broadcom Corporation
    Inventors: Seppo Rousu, Hannu Palomaa, Andrew Frankton
  • Patent number: 8843058
    Abstract: A mobile relay system for supporting communications between a fixed station and mobile terminals comprising a plurality of mobile relay stations that are associated with each other and provided on a moving platform, wherein each of the plurality of mobile relay stations is capable of facilitating communications with mobile terminals within communication range and at least one of the plurality of mobile relay stations is further capable of facilitating communications with a fixed station within communication range of the at least one of the plurality of mobile relay stations.
    Type: Grant
    Filed: January 11, 2008
    Date of Patent: September 23, 2014
    Assignee: BlackBerry Limited
    Inventors: Gamini Senarath, Hang Zhang, Peiying Zhu, Wen Tong, Derek Yu, David G. Steer, Guo-Qiang Q. Wang
  • Patent number: 8837291
    Abstract: A communication routing arrangement includes two or more wireless routers coupled to a communication network, and a user device adapted to couple with the communication network through a communication path including at least one of the two or more wireless routers. The communication path between the user device and the communication network is selected based on available resources of the two or more wireless routers.
    Type: Grant
    Filed: July 30, 2012
    Date of Patent: September 16, 2014
    Assignee: Novatel Wireless, Inc.
    Inventors: Thomas G. Polsdorf, Cuong Pham, Anand Gore, Dirk DeSchepper, Ulf Soderberg
  • Patent number: 8825801
    Abstract: A method comprises providing an interface permitting a first user to control activation of a mobile information channel through which the first user can share access to content with a plurality of additional users, activating the mobile information channel responsive to input received from the first user via the interface, inserting content provided by the first user into the mobile information channel, receiving additional content relating to the mobile information channel from one or more of said additional users via one or more respective mobile devices associated with at least one wireless network, inserting at least a portion of the additional content into the mobile information channel, and integrating into the mobile information channel information associated with at least one wireless networking functionality of said at least one wireless network.
    Type: Grant
    Filed: February 7, 2014
    Date of Patent: September 2, 2014
    Assignee: Wireless Ink Corporation
    Inventors: David Walker Harper, Jason James Sabella, William Henry Munch
  • Patent number: 8825351
    Abstract: A modem unit receives a signal broadcasted by a base station apparatus. A storage unit extracts information included in the received signal and stores the extracted information. A detection unit detects a fact that the signal broadcasted by the base station apparatus is not received. A generation unit measures a period of time starting when the storage unit has stored the information. When the detection unit detects the fact and when the measured period of time is shorter than a threshold, the generation unit broadcasts a signal including the information stored in the storage unit.
    Type: Grant
    Filed: December 10, 2012
    Date of Patent: September 2, 2014
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Yoshio Yuse, Fuminori Takama, Masafumi Furuke, Makoto Nagai
  • Patent number: 8798526
    Abstract: Techniques for selecting and processing signals from different stations in a wireless network are described. A destination station may receive a direct signal from a source station and at least one relay signal from at least one relay station. The destination station may determine metrics for the source and relay stations, e.g., based on pilots received from these stations. The destination station may select at least one signal to process from among the direct and relay signals based on the metrics for the source and relay stations. The destination station may select the direct signal if the metric for the source station exceeds a threshold. The destination station may select the relay signal from each relay station having a metric exceeding at least one threshold. The destination station may process the at least one selected signal to recover a transmission sent by the source station to the destination station.
    Type: Grant
    Filed: June 23, 2009
    Date of Patent: August 5, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Tingfang Ji, Arnab Chakrabarti, Anastasios Stamoulis, Dexu Lin, Kambiz Azarian Yazdi
  • Patent number: 8756463
    Abstract: A method and an apparatus for data management through timer compensation in a wireless communication system are provided. In the method, when a data loss occurs at a first point, whether a data loss has occurred previously and so whether a timer is being driven are determined. Whether the driven timer stops or expires at a second point is determined. When the timer stops or expires at the second point, a timer value is compensated for with consideration of a time difference between the first point and the second point. A timer for the data loss of the first point is restarted based on the compensated timer value. Therefore, a delay of a retransmission request time for lost data in an RLC (Radio Link Control) layer may be minimized.
    Type: Grant
    Filed: June 16, 2010
    Date of Patent: June 17, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Dong-Jun Kang
  • Patent number: 8725188
    Abstract: Systems and methods for communication in enclosed areas. Implementations may include a high-frequency (HF) conversion side including an HF modulator and HF demodulator which is coupled with an HF antenna. A medium-frequency (MF) conversion side including an MF modulator and an MF demodulator which is coupled with an MF antenna may also be included. The HF conversion side may be coupled to the MF conversion side at the HF demodulator and the HF modulator. The HF conversion side may be physically separate from the MF conversion side.
    Type: Grant
    Filed: August 13, 2009
    Date of Patent: May 13, 2014
    Assignee: Kutta Technologies, Inc.
    Inventors: Patrick A. Murphy, Matthew J. Savoca, Geoffrey D. Simms
  • Patent number: 8687517
    Abstract: A method and device for identifying degradation in service quality for a wireless media service. The wireless media service has a known expected packet generation rate, which may be determined by the device based upon the codec and payload size selected on initiating the media service. At a receiving device, the packets actually received by the device from the other termination point are counted over a time period, and this number is compared with the number of packets that were expected based upon the known packet generation rate. From this comparison a packet loss rate may be determined. If the packet loss rate exceeds a threshold level, then the device may issue a user alert, terminate the service, or take other action. The threshold level may be established based upon a packet loss rate corresponding to a significant degree of service quality degradation.
    Type: Grant
    Filed: June 8, 2012
    Date of Patent: April 1, 2014
    Assignee: BlackBerry Limited
    Inventors: Sherif Abdel-Kader, Michael Chen
  • Publication number: 20140065949
    Abstract: In one or more embodiments, a cellular signal is received and directed to a path bypassing active amplifier circuitry. This may be in response to the active amplifier circuitry being non-operational (e.g., in a fault state) or detecting that an RF environment does not necessitate amplification. Bypassing the active amplifier circuitry may enable transmission of a non-amplified cellular signal when active circuitry is in a fault state or while traveling through areas of strong cellular service (e.g., proximate a cell tower).
    Type: Application
    Filed: August 28, 2013
    Publication date: March 6, 2014
    Applicant: Clear RF LLC
    Inventor: Peter E. Wilhite
  • Patent number: 8666315
    Abstract: A method for managing in network equipment of a communication network anonymous communications between a first and a second mobile user apparatus includes: a) receiving from the first mobile user apparatus, through a first network connection, data indicating that a short-range wireless connection between the first mobile user apparatus and the second mobile user apparatus has been established, the data including a second unique short-range wireless connection identifier associated with the second mobile user apparatus and a message for the second mobile user apparatus; b) by using the second unique short-range wireless connection identifier, obtaining a network address associated with the second mobile user apparatus; and c) by using the network address obtained in b), sending data to the second mobile user apparatus through a second network connection, the data including the message received in a) from the first mobile user apparatus and a first anonymous identifying code univocally associated with the first
    Type: Grant
    Filed: August 19, 2005
    Date of Patent: March 4, 2014
    Assignee: Telecom Italia S.p.A.
    Inventors: Giovanni Martini, Piergiorgio Bosco, Ennio Grasso, Alessandro Perrucci, Claudio Benenti
  • Patent number: 8634766
    Abstract: A method of monitoring an element in wireless communication system is provided. An operational noise measurement is obtained by measuring a noise value outside of a bandwidth of a first device, but within a bandwidth of a second, subsequent device. The operational noise measurement is alternatively obtained by tuning an input band of the element to shift the input band partially or completely outside of a bandwidth of a first device to create an open band or by suppressing an input of the antenna and measuring noise within the open bandwidth of the element of the wireless communication network. A stored parameter is retrieved and compared to the measured operational noise. Alternatively, a leakage signal of the element may be received at a signal receiver and compared to a reference. The reference is a function of components of the wireless communication system in a leakage path of the leakage signal.
    Type: Grant
    Filed: February 16, 2010
    Date of Patent: January 21, 2014
    Assignee: Andrew LLC
    Inventors: Neil T. Hobbs, Nelson C. Schmidt, Jr., Thomas Kummetz, Fred Phillips
  • Patent number: 8626210
    Abstract: Methods, systems, and products are disclosed for notification of alarms in security systems. A packetized alarm message is received from a security system associated with a network address. The network address is associated to a notification address. A communication to the notification address is initiated to alert of an alarm from a security system.
    Type: Grant
    Filed: November 15, 2010
    Date of Patent: January 7, 2014
    Assignee: AT&T Intellectual Property I, L.P.
    Inventor: John Alson Hicks, III
  • Patent number: 8619837
    Abstract: A repeater environment is provided to deploy a feedback cancellation loop that is adaptively coupled with an antenna array such that a selected metric can be derived by deploying a one or more of selected metrics (e.g., composite metrics) 5 comprising a selected filter bank operative to process the signal on a bin by bin basis and the derived metric can be applied to the antenna array and feedback cancellation loop combination to improve signal integrity and amplification, beam forming operations, and pilot control and overhead channel control operations. In an illustrative implementation, an exemplary repeater environment comprises, a 10 transmitter, a receiver, an equalized feedback cancellation loop circuitry comprising a filter bank, the cancellation loop being operatively coupled to an antenna array. In the illustrative implementation, the feedback cancellation loop can receive signals as input from a cooperating antenna array and provide output signals such as a feedback leakage signal to a cooperating.
    Type: Grant
    Filed: March 3, 2008
    Date of Patent: December 31, 2013
    Assignee: QUALCOMM Incorporated
    Inventors: James A. Proctor, Jr., Kenneth M. Gainey, James C. Otto
  • Patent number: 8615192
    Abstract: This invention provides a communication system, a communication apparatus, a control method of the communication apparatus, and a computer-readable storage medium, which enable to increase the reliability of relay transmission and suppress redundant transmission.
    Type: Grant
    Filed: January 20, 2010
    Date of Patent: December 24, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventor: Tadashi Eguchi
  • Patent number: 8599906
    Abstract: A repeater environment is provided to operatively deploy a feedback cancellation loop that performs closed loop calculations for weights used by a feedback equalizer to improve signal integrity and amplification. In an illustrative implementation, an exemplary repeater environment comprises a transmitter, a receiver, an equalized feedback cancellation loop circuitry operative to perform one or more closed form calculations for equalizer weights. In the illustrative implementation, the feedback cancellation loop can comprise a calculation module operative to perform one or more closed form weight calculations using linear algebraic techniques as part of feedback signal cancel operations for use by the N tap feedback equalizer canceller.
    Type: Grant
    Filed: March 3, 2008
    Date of Patent: December 3, 2013
    Assignee: QUALCOMM Incorporated
    Inventors: James A. Proctor, Jr., Kenneth M. Gainey, James C. Otto
  • Patent number: 8565162
    Abstract: In one exemplary embodiment of the invention, a method including: determining whether first allocation information has been transmitted from a first device towards a second device in a wireless communication system; and transmitting a message including transmittal information and second allocation information from the first device towards the second device, wherein the transmittal information corresponds to the determined transmittal of the first allocation information. In another exemplary embodiment of the invention, a method including: detecting whether a first signal is received on a dedicated resource of a wireless communication system; detecting whether a second signal is received on a shared resource of the wireless communication system; and determining, based on a detection outcome for the first signal and a detection outcome for the second signal, whether at least one allocation has failed.
    Type: Grant
    Filed: March 18, 2008
    Date of Patent: October 22, 2013
    Assignee: Nokia Corporation
    Inventors: Esa Tiirola, Kari Pajukoski, Matti Kiiski, Frank Frederiksen, Troels E. Kolding, Bernhard Raaf
  • Patent number: 8526877
    Abstract: One method for controlling operation of a repeater in radio communication system comprises determination whether operation of a node in the radio communication system benefits from assistance of a repeater and transmitting, from the node in the radio communication system, a radio signal to the repeater being indicative of an order to promptly activate the repeater if the benefit exists. One complementary method for controlling operation of a repeater in radio communication system comprises detection (252), in the repeater, of a radio signal being indicative of an order to activate the repeater. Amplification in the repeater is activated (254) as a response to such a detected radio signal and uplink traffic from a user terminal being located in a vicinity of the repeater and/or downlink traffic to the user terminal is amplified (256). A repeater, a node, a user terminal and a system operating according to the method are presented.
    Type: Grant
    Filed: December 14, 2007
    Date of Patent: September 3, 2013
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Magnus Almgren, Per Skillermark
  • Patent number: 8520505
    Abstract: Technologies are generally presented for a relay forwarding system combining a data efficiency of soft forwarding that increases generalized signal-to-noise ratio (GSNR) with the ability to use hybrid-automatic repeat requests (H-ARQs) substantially high throughput levels may be maintained by using repair instead of packet re-requests. A relay may receive an incoming signal and perform both a soft forward to a relay destination and a non-forwarded hard decode within the relay. The hard decode results may be analyzed for errors locally to detect suspected bit errors and H-ARQ ACK/NACK signals may be sent so that retransmission can be obtained before a rolling buffer in the relay reaches frame end.
    Type: Grant
    Filed: May 14, 2012
    Date of Patent: August 27, 2013
    Assignee: Empire Technology Development, LLC
    Inventor: Ezekiel Kruglick
  • Patent number: 8489016
    Abstract: A method is provided for communication between at least one source entity and one destination entity, in a cooperative network that includes a plurality of entities. The method includes a step of determining, for a given entity of the network, a temporal variation of an impulse response of a transmission channel established between the given entity and another entity. The method further includes: a step of determining a temporal variation of an impulse response of at least one global transmission channel intended to be established between the source entity and the destination entity and passing through at least one relay entity, on the basis of the temporal variations of the impulse responses of the transmission channels; and a step of selecting a global transmission channel from among the set of global transmission channels determined.
    Type: Grant
    Filed: September 12, 2008
    Date of Patent: July 16, 2013
    Assignee: France Telecom
    Inventors: Ahmed Saadani, Michael Dohler
  • Patent number: 8489017
    Abstract: There is provided a wireless communication system which causes a wireless terminal to select a relay device among plural relay devices connected together via a communication line when the wireless terminal attempts to communicate with another wireless terminal. The relay device has an information acquiring unit, a calling determining unit, and an information adding unit. The wireless terminal has an information analyzing unit which analyzes whether or not the own device is included in a communication counterparty of calling information when the calling information is included in communication information, a priority comparing unit which determines whether or not a priority level of the calling information is higher than that of a current communication when the own device is included, and a channel changing unit which changes a channel to that of another relay device of the calling information when the priority level of the calling information is higher.
    Type: Grant
    Filed: October 28, 2009
    Date of Patent: July 16, 2013
    Assignee: Icom Incorporated
    Inventors: Shoji Fukuzawa, Yoshiyuki Tanaka
  • Patent number: 8478191
    Abstract: Systems, methods and techniques for operating a wireless repeater with multiple antennas are presented. Signals from a wireless communication device are received by a wireless repeater on at least two branch channels associated with at least two repeater receiver antennas. Path or space diversity is resolved from the signals, and the signals are processed on the at least two branch channels to produce at least one strong signal to be repeated to another wireless communication device.
    Type: Grant
    Filed: June 2, 2008
    Date of Patent: July 2, 2013
    Assignee: Nextivity, Inc.
    Inventor: Behzad B. Mohebbi
  • Patent number: 8447228
    Abstract: A power distribution apparatus (PDA), a power distribution method, and a non-instant computer readable medium thereof are provided. The PDA is used in a relay transmission system (RTS) comprising a mobile station (MS), a relay station (RS) and a base station (BS). The MS communicates with the BS through the RS. The PDA may communicate with the MS, BS and RS. The PDA computes optimum transmission parameters of the MS and BS and an optimum relay forward parameter of the RS according to a power threshold, transmission information of the RTS, an optimum condition and an algorithm. Accordingly, the MS, RS and BS may determine the optimum transmission power of the MS, RS and BS according to the optimum transmission parameters and the optimum relay forward parameter respectively.
    Type: Grant
    Filed: October 29, 2010
    Date of Patent: May 21, 2013
    Assignee: Institute for Information Industry
    Inventors: Shih-Jung Lu, Chun-Jung Wu, David W. Lin, Chun-Che Chien
  • Patent number: 8438444
    Abstract: A method of associating ARQ with HARQ is disclosed. The method includes constructing a plurality of coding blocks using an MPDU received from an ARQ entity of a transmitter, transmitting each of the coding blocks to a receiver according to an HARQ operation, discontinuing the coding block transmission, when transmission of a coding block is failed, transmitting an error message indicating a number of the failed coding block to the ARQ entity of the transmitter, receiving ARQ blocks corresponding to the failed coding block from the ARQ entity of the transmitter, constructing at least one coding block using the received ARQ blocks, and retransmitting the at least one coding block to the receiver according to the HARQ operation.
    Type: Grant
    Filed: May 21, 2009
    Date of Patent: May 7, 2013
    Assignee: LG Electronics Inc.
    Inventors: Jin Lee, Tae Gon Kong, Yong Ho Kim
  • Publication number: 20130095748
    Abstract: A method for determining a Modulation and Coding Scheme (MCS) and power control includes determining an error rate of a communication channel between the UA and at least one of the base station and the RN. When the error rate is below a first threshold, the method includes at least one of increasing the MCS, and reducing a transmission power of the UA. When the error rate is above a second threshold, the method includes at least one of decreasing the MCS, and increasing a transmission power of the UA.
    Type: Application
    Filed: August 12, 2010
    Publication date: April 18, 2013
    Applicant: RESEARCH IN MOTION LIMITED
    Inventors: Rose Qingyang Hu, Yi Yu, Zhijun Cai, James Womack, Yi Song, Chandra S. Bontu, Mo-Han Fong
  • Patent number: 8385820
    Abstract: The present application discloses systems and methods for reducing output-to-input feedback signal interference caused by a forwarding node that is configured to forward information received from a transmitter. In some embodiments, this output-to-input feedback signal interference is compensated for by the transmitter. For example, the transmitter is configured such that the signal that is transmitted by transmitter to the forwarding node includes both (1) a primary signal or ‘desired’ signal (e.g., the signal that is intended for a receiving device) and (2) a filtered version of the primary signal. The filter that produces the filtered version of the primary signal is configured (e.g., the filter's filter weights are adapted) such that the filtered version of the primary signal cancels or reduces the undesired output-to-input feedback signal.
    Type: Grant
    Filed: January 12, 2009
    Date of Patent: February 26, 2013
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Peter Larsson, Jiansong Gan
  • Patent number: 8385816
    Abstract: A relay device that monitors and controls common public radio interface (CPRI) links that are links using CPRIs functioning as interfaces for connecting multiple relay devices included in a radio base station detects a disconnected CPRI link by monitoring, via the CPRI links, relay information containing communication data and control data. The relay device distributes a control content, such as a forced link disconnection that forcibly disconnect a CPRI link or no-transmission that stops the transmission of the communication data, with respect to each CPRI link in accordance with a connecting location of the CPRI link in which a link disconnection is detected. The relay device monitors and controls each CPRI link.
    Type: Grant
    Filed: March 24, 2011
    Date of Patent: February 26, 2013
    Assignee: Fujitsu Limited
    Inventors: Yoshimi Toyoda, Satoshi Maeda, Hideki Yoshitome, Hirokazu Shimada
  • Patent number: 8364076
    Abstract: A feedback signal cancellation apparatus includes a first RF receiver configured to down-convert a received RF signal to a predetermined frequency band, a subtractor configured to subtract a replica of a feedback signal from the down-converted signal, a transmission signal generator configured to generate a repeater output signal using a feedback cancelled signal, a RF transmitter configured to transmit the repeater output signal, a second RF receiver configured to down-convert a RF signal outputted from the RF transmitter to a predetermined frequency band, a reference signal generator configured to receive the RF signal and generate a reference signal having no DC pilot, and a replica generator configured to generate a filter coefficient using correlation between the feedback cancelled signal and the reference signal and to generate a replica of the feedback signal using the generated filter coefficient and the down-converted signal of the second RF receiver.
    Type: Grant
    Filed: September 17, 2010
    Date of Patent: January 29, 2013
    Assignees: Electronics and Telecommunications Research Institute, Institute for Research & Industry Cooperation, PNU
    Inventors: Ho-Min Eum, Heung-Mook Kim, Hyoung-Nam Kim, Yong-Gu Jo
  • Patent number: 8364075
    Abstract: In a relay scheme, a wireless source apparatus, a wireless destination apparatus and a wireless relay apparatus cooperate for handling transmission failures by space/time diverse channels. In the case of the successful direct transmission, reduced or no additional overhead for the relay selection is incurred. Thus, for a good SNR between source and destination, the inventive protocol has similar performance as a standard approach. In the case of a transmission failure e.g., due to small scale fading, a transmission via different communication paths implementing spatial diversity via a selected relay is supported. The device is to only activate the overhearing of signals in case of weak signal quality between sender and receiver. This selection of relay devices is done of demand only. A specific protocol for the reservation of the wireless medium for the entire cooperative communication has been specified.
    Type: Grant
    Filed: November 19, 2010
    Date of Patent: January 29, 2013
    Assignee: Lakeside Labs GmbH
    Inventors: Helmut Adam, Wilfried Elmenreich, Christian Bettstetter
  • Patent number: 8320828
    Abstract: In a multiuser MIMO system, entire system throughput achieved during retransmission is significantly enhanced. When an interference signal addressed to another user equipment (UE2) 200b has been demodulated successfully, a user equipment (UE1) 200a holds the demodulated data pertaining to the interference signal, and feeds back ACK information about the UE2 and CQI information achieved after elimination of the interference signal to a radio base station (BS) 100. When the UE2 performs retransmission after ended in a receiving failure and when the UE1 has demodulated the interference signal addressed to the UE2 successfully, the BS changes the distribution of communication resources in such a way that communication resources for the UE2 become larger than those for the UE1.
    Type: Grant
    Filed: January 25, 2008
    Date of Patent: November 27, 2012
    Assignee: Panasonic Corporation
    Inventors: Tomohiro Imai, Masayuki Hoshino, Yasuaki Yuda, Katsuhiko Hiramatsu
  • Patent number: 8320826
    Abstract: A wireless network includes a base station and a relay station for extending wireless coverage of the base station. Downlink data is sent by the base station and relayed through the relay station to a mobile station, where the downlink data is associated with a preamble that is sent directly from the base station to the mobile station. A transmit power of the relay station is adjusted for transmitting the downlink data from the relay station to the mobile station to reduce a difference between a first power level of the preamble received at the mobile station and a second power level of the downlink data received at the mobile station. The uplink transmit power of the mobile station for the data sent to the relay station is adjusted to compensate for the difference in path loss from mobile station to base station and mobile station to relay station and to compensate for the difference in noise_plus_interference level at relay station compared to that of the base station.
    Type: Grant
    Filed: August 25, 2008
    Date of Patent: November 27, 2012
    Assignee: Research In Motion Limited
    Inventors: Nimal Senarath, David Steer, Derek Yu, Hang Zhang, Peiying Zhu, Wen Tong, Israfil Bahceci
  • Patent number: 8275322
    Abstract: An interference relay channel (IRC) utilizes a single relay to assist communications between multiple source-destination links under the half-duplex (HD) constraint. It is assumed that each source has an independent message and its transmitted signal may cause interference at the other destinations. It is also assumed that each node only estimates its backward channels and has no knowledge of its forward channels as well as the other links. The role of the relay is to generate signals to cooperate with the intended signal and mitigate the interference at all destinations.
    Type: Grant
    Filed: April 29, 2009
    Date of Patent: September 25, 2012
    Assignee: NEC Laboratories America, Inc.
    Inventors: Mohammad A. Khojastepour, Xiaodong Wang
  • Patent number: 8270424
    Abstract: Disclosed is a method of signaling hopping locations selected by a scheduling entity using a frequency hopping pattern indicator for indicating hopping locations for at least two re-transmissions. The frequency hopping pattern is selected by the scheduling entity which may have knowledge of all or at least a plurality of scheduled reverse link transmissions or restrictions upon reverse link transmissions, thereby allowing reverse link re-transmissions to be scheduled in a manner compatible with other reverse link transmissions and restrictions. Overall signaling overhead associated with scheduling re-transmissions is reduced through the signaling of a single message which indicates hopping locations for at least two re-transmissions instead of two or more separate messages, wherein each of the two or more separate message indicates a hopping location for an individual re-transmission.
    Type: Grant
    Filed: November 1, 2006
    Date of Patent: September 18, 2012
    Assignee: Alcatel Lucent
    Inventor: Anil M Rao
  • Patent number: RE43800
    Abstract: A large amount of user information is transmitted with good efficiency by means of a high-speed downlink by making transmission rates of an uplink circuit and a downlink asymmetrical. The radio communication system includes a plurality of base stations, a plurality of terminals, an uplink established between each of the base stations and each of the terminals for the purpose of radio transmission of prescribed information from a terminal to a base station, and a downlink circuit established between each of the terminals and each of the base station for the purpose of radio transmission of prescribed data from a base station to a terminal.
    Type: Grant
    Filed: August 25, 2009
    Date of Patent: November 13, 2012
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Mutsumu Serizawa, Nobuyasu Nakajima, Koji Ogura, Minoru Namekata, Takashi Wakutsu, Manabu Mukai
  • Patent number: RE43950
    Abstract: A large amount of user information is transmitted with good efficiency by means of a high-speed downlink by making transmission rates of an uplink circuit and a downlink asymmetrical. The radio communication system includes a plurality of base stations, a plurality of terminals, an uplink established between each of the base stations and each of the terminals for the purpose of radio transmission of prescribed information from a terminal to a base station, and a downlink circuit established between each of the terminals and each of the base station for the purpose of radio transmission of prescribed data from a base station to a terminal.
    Type: Grant
    Filed: August 24, 2009
    Date of Patent: January 29, 2013
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Mutsumu Serizawa, Nobuyasu Nakajima, Koji Ogura, Minoru Namekata, Takashi Wakutsu, Manabu Mukai
  • Patent number: RE44074
    Abstract: A large amount of user information is transmitted with good efficiency by means of a high-speed downlink by making transmission rates of an uplink circuit and a downlink asymmetrical. The radio communication system includes a plurality of base stations, a plurality of terminals, an uplink established between each of the base stations and each of the terminals for the purpose of radio transmission of prescribed information from a terminal to a base station, and a downlink circuit established between each of the terminals and each of the base station for the purpose of radio transmission of prescribed data from a base station to a terminal.
    Type: Grant
    Filed: August 25, 2009
    Date of Patent: March 12, 2013
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Mutsumu Serizawa, Nobuyasu Nakajima, Koji Ogura, Minoru Namekata, Takashi Wakutsu, Manabu Mukai