Duplex Repeaters Or Extenders Patents (Class 370/293)
  • Patent number: 11528074
    Abstract: A repeater system for LPWAN according to the present invention is characterized by comprising: a first antenna and a second antenna which may be antennas for transmission or reception according to a user's selection; a switch which is coupled to each of the first antenna and the second antenna; an RF transmission end and an RF reception end which are connected to the first antenna and the second antenna through the switch; and a control unit for controlling the switching of the switch and for controlling the RF transmission end and the RF reception end, wherein the first antenna is a multi-directional dipole antenna, and the second antenna includes a directional antenna for receiving and transmitting signals in a single direction.
    Type: Grant
    Filed: December 3, 2019
    Date of Patent: December 13, 2022
    Assignee: AMOTECH CO., LTD.
    Inventors: Jaeil Park, Hyungil Baek, Chanwoo Lee, Yonggil Jo
  • Patent number: 11515878
    Abstract: Various embodiments relate to a level shifter circuit configured to generate a voltage output, including: a first charging path circuit; a second charging path circuit; and an enable circuit configured to enable the first charging path circuit and the second charging path circuit, wherein the voltage output is a combination of the voltage from the first charging path circuit and the second charging path circuit, the first charging path circuit charges up to a voltage limit, and the first charging path circuit charges the voltage output faster than the second charging path circuit.
    Type: Grant
    Filed: August 12, 2021
    Date of Patent: November 29, 2022
    Assignee: NXP USA, Inc.
    Inventors: David Edward Bien, Siamak Delshadpour, Ranjeet Kumar Gupta
  • Patent number: 11201397
    Abstract: A circuit includes a first input and output terminals to which a current, a voltage, or an electromagnetic wave (referred to as “current or the like” below) is applied, a second input and output terminals to which the current or the like is applied, a first board including a matrix circuit which is formed by a first line and includes a 90-degree hybrid circuit and a delay line, the first line in which one end is connected to the first input and output terminals and a tip of the other end is opened, a second board including a second line in which one end is connected to the second input and output terminals, and a tip of the other end is opened, and a shielding plate including an opening portion.
    Type: Grant
    Filed: February 26, 2019
    Date of Patent: December 14, 2021
    Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Takana Kaho, Doohwan Lee, Hirofumi Sasaki, Yasunori Yagi, Takashi Shimizu
  • Patent number: 11095320
    Abstract: A communication system with a first input port and a second input port includes a first antenna, a second antenna, a first diplexer, a second diplexer, a third diplexer, a fourth diplexer, a first coupler, and a second coupler. The first diplexer has a common terminal coupled to the first input port. The second diplexer has a common terminal coupled to the second input port. The third diplexer has a common terminal coupled to the first antenna. The fourth diplexer has a common terminal coupled to the second antenna. Each of the first diplexer, the second diplexer, the third diplexer, and the fourth diplexer has a first terminal and a second terminal which are coupled between the first coupler and the second coupler.
    Type: Grant
    Filed: December 2, 2019
    Date of Patent: August 17, 2021
    Assignee: WISTRON NEWEB CORP.
    Inventor: Chun-Lin Huang
  • Patent number: 10847856
    Abstract: A technology for a dual-common port multi-bandpass filter is described. The dual-common port multi-bandpass filter can include two or more analog filters. The dual-common port multi-bandpass filter can include a first common port coupled to an input of each of the two or more analog filters, where each analog filter can be configured to filter one or more frequency bands. The dual-common port multi-bandpass filter can include a second common port coupled to an output of each of the two or more analog filters. Each input of each of the two or more analog filters can be impedance matched with the first common port. Each output of each of the two or more analog filters can be impedance matched with the second common port.
    Type: Grant
    Filed: April 9, 2019
    Date of Patent: November 24, 2020
    Assignee: Wilson Electronics, LLC
    Inventors: Chris Ashworth, Patrick Cook
  • Patent number: 10785065
    Abstract: Aspects of the present disclosure are directed to facilitating communications to respective circuit nodes in a manner that may also be useful for mitigating undesirable signal attenuation. As may be implemented in accordance with one or more embodiments, switchable isolation circuits, presented by at least one transformer and switch, are utilized to isolate adjacent data processing nodes on a bus in which each data processing node includes logic circuitry and processes signal therein. For each of the switchable isolation circuits, switching circuitry operates to mitigate communication propagation over the differential bus between adjacent data processing nodes, by switching the switchable isolation circuit for providing isolation. This approach may be utilized, for example, to assign sequential identification to daisy-chained circuit nodes upon start-up or reset, for use in addressing each node directly for further communication therewith.
    Type: Grant
    Filed: March 12, 2018
    Date of Patent: September 22, 2020
    Assignee: NXP B.V.
    Inventor: Denis Sergeevich Shuvalov
  • Patent number: 10567032
    Abstract: One embodiment of the present invention relates to a method whereby a second node transmits/receives signals in a full duplex radio (FDR) system, the method for transmitting/receiving signals in an FDR system comprising steps in which: the second node transmits a signal to a first node as the second node receives a signal from the first node; the second node transmits Tx/Rx capability information to a third node if the transmission of the signal to the first node is completed during the reception of the signal from the first node; and the second node receives a signal from the third node after transmitting the Tx/Rx capability information.
    Type: Grant
    Filed: November 10, 2016
    Date of Patent: February 18, 2020
    Assignee: LG ELECTRONICS INC.
    Inventors: Hyukjin Chae, Suckchel Yang, Jonghyun Park
  • Patent number: 10530716
    Abstract: This application discloses a voice chat mode adaptation method and apparatus. The method includes: receiving, by a server, a voice chat request sent by a source client on a chat interface, the voice chat request including information about a corresponding destination client that is on the chat interface; checking whether the destination client of the voice chat request is online; and entering a voice message mode when the destination client is not online, so that the source client and the destination client send a voice message to each other; or entering a real-time chat mode when the destination client is online, so that the source client and the destination client perform real-time hold-to-talk.
    Type: Grant
    Filed: September 20, 2017
    Date of Patent: January 7, 2020
    Assignee: TENCENT TECHNOLOGY (SHENZHEN) COMPANY LIMITED
    Inventors: Liwei Ye, Tieming Huang, Yu Chen, Bin Li
  • Patent number: 10424822
    Abstract: A technology for a dual-common port multi-bandpass filter is described. The dual-common port multi-bandpass filter can include two or more analog filters. The dual-common port multi-bandpass filter can include a first common port coupled to an input of each of the two or more analog filters. Each analog filter can be configured to filter one or more frequency bands. The dual-common port multi-bandpass filter can include a second common port coupled to an output of each of the two or more analog filters. Each input of each of the two or more analog filters is impedance matched with the first common port. Each output of each of the two or more analog filters is impedance matched with the second common port.
    Type: Grant
    Filed: April 20, 2018
    Date of Patent: September 24, 2019
    Assignee: WILSON ELECTRONICS, LLC
    Inventors: Chris Ashworth, Patrick Cook
  • Patent number: 10411788
    Abstract: Aspects of the subject disclosure may include, for example, a repeater device having a first coupler to extract downstream channel signals from first guided electromagnetic waves bound to a transmission medium of a guided wave communication system. An amplifier amplifies the downstream channel signals to generate amplified downstream channel signals. A channel selection filter selects one or more of the amplified downstream channel signals to wirelessly transmit to the at least one client device via an antenna. A second coupler guides the amplified downstream channel signals to the transmission medium of the guided wave communication system to propagate as second guided electromagnetic waves. Other embodiments are disclosed.
    Type: Grant
    Filed: September 7, 2018
    Date of Patent: September 10, 2019
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Robert Bennett, Paul Shala Henry, Irwin Gerszberg, Farhad Barzegar, Donald J. Barnickel, Thomas M. Willis, III
  • Patent number: 10411787
    Abstract: Aspects of the subject disclosure may include, for example, a host node device having a terminal interface that receives downstream channel signals from a communication network and sends upstream channel signals to the communication network. An access point repeater launches the downstream channel signals as guided electromagnetic waves on a guided wave communication system and to extract a first subset of the upstream channel signals from the guided wave communication system. A radio wirelessly transmits the downstream channel signals to at least one client node device and to wirelessly receive a second subset of the upstream channel signals from the at least one client node device. Other embodiments are disclosed.
    Type: Grant
    Filed: July 12, 2018
    Date of Patent: September 10, 2019
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Robert Bennett, Paul Shala Henry, Irwin Gerszberg, Farhad Barzegar, Donald J Barnickel, Thomas M. Willis, III
  • Patent number: 10397940
    Abstract: Aspects described herein relate to communicating in a wireless network. Downlink control information having a dynamic resource allocation indicator can be received from a serving access point. It can be determined whether the dynamic resource allocation indicator indicates at least one symbol in a subframe is for uplink data communications or reference signal transmission. Uplink data communications can be transmitted using the at least one symbol based at least in part on the determination that the dynamic resource allocation indicator indicates the at least one symbol in the subframe is for the uplink data communication, though a broadcasted reference signal configuration may indicate otherwise. Numerous other aspects are provided.
    Type: Grant
    Filed: June 15, 2017
    Date of Patent: August 27, 2019
    Assignee: Qualcomm Incorporated
    Inventors: Deepak Krishnamoorthi, Wanshi Chen, Jong Hyeon Park
  • Patent number: 9923628
    Abstract: A method for recommending a relay node to which a user agent attaches. The method includes recommending the relay node based on a relay node selection rank.
    Type: Grant
    Filed: October 8, 2015
    Date of Patent: March 20, 2018
    Assignee: BlackBerry Limited
    Inventors: James Earl Womack, Yi Yu, Zhijun Cai
  • Patent number: 9788306
    Abstract: In one method, a base station sends configuration notification information to a terminal, so as to notify the terminal to set at least one radio frame meet a first subframe configuration, where the first subframe configuration includes N?1 downlink subframes, one special subframe, and zero uplink subframe. In another method, third radio frame configuration information is sent to a terminal, and second dynamic subframe indication information is sent to the terminal, so that at least one fourth radio frame is set to meet a third subframe configuration, or is set to meet a fourth subframe configuration, or at least one fifth radio frame is set to meet a fourth subframe configuration, where the third subframe configuration includes zero downlink subframe, zero special subframe, and N uplink subframes, and the fourth subframe configuration includes zero downlink subframe, one special subframe, and N?1 uplink subframes.
    Type: Grant
    Filed: December 1, 2014
    Date of Patent: October 10, 2017
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Xiaobo Chen, Yang Li, Lei Wan
  • Patent number: 9578639
    Abstract: Methods and nodes, for assignment of uplink control channel resources for providing HARQ feedback for data transmitted on a downlink data channel associated with a downlink control channel. The downlink control channel comprises at least a set of downlink control channel resources, which is configurable over a subset of available time frequency resources. The method comprises dividing the set of downlink control channel resources into at least two subsets of references, comprising indices to the respective downlink control channel resources. Also, the method comprises defining, for each such subset of references, an associated subset of references comprising indices to unique uplink control channel resources. Furthermore, the method comprises associating each element in the subset of references with a subframe and an element in the subset of references. Additionally, the method further comprises transmitting data on the downlink data channel associated with the downlink control channel.
    Type: Grant
    Filed: March 27, 2015
    Date of Patent: February 21, 2017
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Fredrik Berggren, Jianghua Liu
  • Patent number: 9491657
    Abstract: Incorporating and operating a mesh base station in a wireless network is described. The mesh base station can utilize common wireless resource allocations as a corresponding wireless base station while transmitting to wireless subscriber stations during the same time period. The mesh base station obtains a data packet from the wireless base station over a backhaul link during a scheduled time period and transmits the data packet to the designated wireless subscriber station during another scheduled time period. The wireless base station and the mesh base station can also receive data packets from wireless subscriber stations during a same time period. A wireless network can be configured with two mesh base stations at an approximate boundary of two adjacent sector coverage areas, where a coverage area is supported by a wireless base station and each mesh base station supports wireless subscriber stations within a coverage radius.
    Type: Grant
    Filed: August 19, 2013
    Date of Patent: November 8, 2016
    Assignee: AT&T Intellectual Property II, L.P.
    Inventors: Byoung-Jo J. Kim, Nemmara K. Shankaranarayanan, Amit Kumar Saha
  • Patent number: 9014080
    Abstract: An apparatus and method for designing a relay backhaul channel in a wireless communication system are provided. At least one relay node utilized for communication with respective user devices and at least one relay backhaul channel for conducting in-band half-duplex communication with the at least one relay node are identified. The relay backhaul channel may be an FDM channel, a TDM/FDM channel, or a joint R-PDCCH/R-PDSCH channel. The relay channel is used for communicating with the at least one relay node. The supportable ranks of the R-PDSCH channel may depend on the number of resources reserved for demodulation reference signals in the R-PDCCH region.
    Type: Grant
    Filed: October 29, 2010
    Date of Patent: April 21, 2015
    Assignee: QUALCOMM Incorporated
    Inventors: Aamod Dinkar Khandekar, Amir Farajidana, Juan Montojo, Wanshi Chen, Alexei Yurievich Gorokhov, Tingfang Ji, Ravi Palanki
  • Patent number: 9001705
    Abstract: A mobile communication system according to the present invention is configured such that a relay node RN is configured to time-share a subframe for transmission and reception in a Un interface and a subframe for transmission and reception in a Uu interface, and a radio base station DeNB is configured to transmit SI, which is to be transmitted in a subordinate cell, to the relay node RN via individual signaling.
    Type: Grant
    Filed: January 7, 2011
    Date of Patent: April 7, 2015
    Assignee: NTT DOCOMO, INC.
    Inventors: Mikio Iwamura, Hideaki Takahashi
  • Patent number: 8982771
    Abstract: A method for performing HARQ includes: receiving information to determine downlink subframes used for a relay station to receive scheduling information from a BS; determining uplink subframes for performing a HARQ with the DL subframes, each of the UL subframes corresponding to each of the DL subframes; assigning sequentially each of a plurality of HARQ processes to each of the UL subframes one by one; and performing HARQ with the BS at at least one of the HARQ processes. An n-th subframe is configured for a corresponding UL subframe if an (n?4)-th subframe is configured for one of the DL subframes, n denoting an integer. The HARQ processes are equal in number to the UL subframes. The DL subframes are configured in at least one radio frame having 10 subframes indexed from 0 to 9. Subframes having indexes 0, 4, 5 and 9 are not configured as a DL subframe.
    Type: Grant
    Filed: July 15, 2013
    Date of Patent: March 17, 2015
    Assignee: LG Electronics Inc.
    Inventors: Hanbyul Seo, Byoung-Hoon Kim
  • Patent number: 8982746
    Abstract: A method and system for communicating data between two devices are described herein. The method detects an electrical signal of a first protocol from a first device in a repeater, wherein the first protocol comprises single-ended signaling. The method also determines the speed of the electrical signal. Additionally, the method converts the electrical signal of the first protocol into an electrical signal of a second protocol based on the speed of the electrical signal. The second protocol comprises differential signaling. Furthermore, the method sends the electrical signal of the second protocol to a second device. In addition, the method stops the electrical signal of the second protocol to the second device when the electrical signal of the second protocol indicates an end of data flow.
    Type: Grant
    Filed: June 30, 2012
    Date of Patent: March 17, 2015
    Assignee: Intel Corporation
    Inventors: Huimin Chen, Kok Hong Chang
  • Patent number: 8942143
    Abstract: A time division duplex orthogonal frequency division multiplexing (TDD-OFDM) distributed antenna system (DAS), a base station and a remote access unit for the same are provided. The base station performs an inverse fast Fourier transform on a user downlink signal, a transmitting/receiving enable signal and an input control signal to generate a first OFDM signal. The user downlink signal is carried on a used subcarrier set of the first OFDM signal, while the transmitting/receiving enable signal and the input control signal are carried on a guard band subcarrier set of the first OFDM signal. The remote access unit receives the first OFDM signal via a fiber transmission line, switches between a transmitting mode and a receiving mode periodically, performs a clock synchronization with the base station according to the transmitting/receiving enable signal, and performs a system configuration according to the input control signal.
    Type: Grant
    Filed: November 14, 2011
    Date of Patent: January 27, 2015
    Assignee: Institute For Information Industry
    Inventors: Chingwo Ma, I-Chou Chung, Shih-i Chen, Chi-Hsien Kao
  • Patent number: 8923168
    Abstract: A radio front end includes an antenna tuning unit, a duplexer, a balancing network, and a processing module. The antenna tuning unit is operably coupled to an antenna and operable to tune an operational characteristic of the antenna based on an antenna tuning signal. The duplexer is operably coupled to the antenna tuning unit and operable to provide electrical isolation between an outbound wireless signal and an inbound wireless signal. The balancing network is operably coupled to the duplexer and operable to establish an impedance that substantially matches an impedance of the antenna. The processing module is operable to estimate the impedance of the antenna to produce an estimated antenna impedance and to generate the antenna tuning signal based on the estimated antenna impedance.
    Type: Grant
    Filed: November 15, 2010
    Date of Patent: December 30, 2014
    Assignee: Broadcom Corporation
    Inventors: Mohyee Mikhemar, Hooman Darabi
  • Patent number: 8897698
    Abstract: The invention relates to a data transfer method in a multi-hop relay system. The data transfer method comprises: a step for allowing a base station to receive from a first terminal the channel information (Hd,1) between the base station and the first mobile station, a step for making the base station generate an interference cancellation precoding matrix using Hd,1, a step for forcing the base station to transfer first data to a relay station, and a step for making the relay station transfer the first data to the first mobile station and forcing the base station to transfer second data to a second mobile station, wherein the second data is converted using the interference cancellation precoding matrix. According to the disclosed data transfer method in the multi-hope relay system, the base station transfers data to another mobile station efficiently when the relay station transfers data to a mobile station.
    Type: Grant
    Filed: December 4, 2009
    Date of Patent: November 25, 2014
    Assignees: Samsung Electronics Co., Ltd., Korea Advanced Institute of Science and Technology
    Inventors: Young Hyun Jeon, Tak Ki Yu, Jong Hyung Kwun, Chan Ho Min, Min Suk Kang, Hyu Dae Kim, Bang Chul Jung, Dong Won Lee
  • Patent number: 8885689
    Abstract: A first node including a physical layer device, a first transceiver and a second transceiver. The first transceiver includes a first analog front end connected to a first transmission line. The first analog front end is configured to transfer first data between the physical layer device and a second node via the first transmission line. The second transceiver includes a second analog front end connected to a second transmission line. The second analog front end is configured to transfer second data between the physical layer device and a third node via the second transmission line. A first type of the second transmission line is different than a second type of the first transmission line. The first node is configured to perform as a repeater using data repeating functions at a link layer control level.
    Type: Grant
    Filed: March 22, 2011
    Date of Patent: November 11, 2014
    Assignee: Marvell Hispania S. L.
    Inventors: Jorge Vicente Blasco Claret, Jose Luis Gonzalez Moreno, Salvador Iranzo Molinero, John Vincent Egan, Agustin Badenes Corella
  • Patent number: 8885688
    Abstract: A repeater is configured to selectively generate and transmit control message packets between wireless stations on both a transmit side and a receive side of the repeater. The repeater manages and manipulates an end to end protocol of the control message packets in a manner that does not change media access control (MAC) addresses of the end to end protocol so as to achieve a network objective, such as preventing other transmitters from transmitting while the repeater repeats a signal from its receive side to its transmit side. The control message management is applicable to analog signal repeaters as well as digital repeaters, such as symbol to symbol or packet to packet repeaters, in which physical layer control message management is performed.
    Type: Grant
    Filed: June 7, 2006
    Date of Patent: November 11, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Kenneth M. Gainey, James A. Proctor, Jr., Ross L. Lintelman, Lawrence W. LaMont, Jr., Carlos M. Puig
  • Patent number: 8862051
    Abstract: A method of operating a repeater in a communications system is disclosed, wherein a repeater gain to be used for the amplification of a signal is adjusted in dependence on an estimate of an interference by the repeater and by the receiver. The interference at the receiver is feed back to the relay node.
    Type: Grant
    Filed: May 4, 2009
    Date of Patent: October 14, 2014
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Jiansong Gan, Pål Frenger, Yin Liu, Zhang Zhang
  • Patent number: 8848596
    Abstract: Embodiments for providing a method of controlling timing of a downlink backhaul sub-frame and a relay system for the same are disclosed. According to the present invention, a control signal is transmitted to user equipment during a control symbol period of a sub-frame and a data starting point of the sub-frame is set after a time (SG1) for switching from a transmission mode to a reception mode to receive backhaul data of a base station during a backhaul symbol period. Timing of a transmission sub-frame and a reception sub-frame is delayed by the SG1. A sum of a length of the SG1 and a time (SG2) for switching from the reception mode to the transmission mode is shorter than a length of a symbol having a normal CP. At this time, the lengths of the SG1 and the SG2 are identical to each other or the length of the SG2 is shorter than the length of the SG1. In such a case, the backhaul data are received up to a last symbol period of backhaul symbols of the reception sub-frame.
    Type: Grant
    Filed: January 28, 2011
    Date of Patent: September 30, 2014
    Assignee: LG-Ericsson Co., Ltd.
    Inventors: Hong Sup Shin, Young Jun Kim, Sang Ha Kim, Il Doo Chang, Hee Bong Lee
  • Patent number: 8842582
    Abstract: Although the duplexer in a full-duplex transceiver circuit may only be guaranteed by the duplexer manufacturer to have a transmit band rejection from its TX port to its RX port of a certain amount, and may only be guaranteed to have a receive band rejection of another amount, the actual transmit band rejection and the actual receive band rejection of a particular instance of the duplexer may be better than specified. Rather than consuming excess power in the receiver and/or transmitter in order to meet performance requirements assuming the duplexer only performs as well as specified, the duplexer's in-circuit performance is measured as part of a transmitter-to-receiver isolation determination. Transmitter and/or receiver power settings are reduced where possible to take advantage of the measured better-than-specified in-circuit duplexer performance, while still meeting transceiver performance requirements. Power settings are not changed during normal transmit and receive mode operation.
    Type: Grant
    Filed: June 4, 2010
    Date of Patent: September 23, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Prasad S. Gudem, Soon-Seng Lau, Li Liu
  • Publication number: 20140254440
    Abstract: A repeater (1) particularly suitable for a time-division duplex transmission of communication signals is provided. The repeater (1) comprises a master unit (2) for communicating with a base station (3) of a wireless network, at least one remote unit (4) for communicating with a network terminal, as well as a waveguide (11) connecting the remote unit (4) with the master unit (2) for transmitting the communication signals in an uplink direction (6) from the remote unit (4) to the master unit (2) and in a downlink direction (5) from the master unit (2) to the remote unit (4). Both the master unit (2) and the remote unit (4) comprise one switch (19, 20) each for changing over the signal transmission between uplink direction (6) and downlink direction (5).
    Type: Application
    Filed: May 15, 2014
    Publication date: September 11, 2014
    Applicant: Andrew LLC
    Inventors: Peter Schmid, Oliver Braz, Peter Gunzner, Mathias A. Schmalisch, Jorg Stefanik
  • Patent number: 8797896
    Abstract: A method for wireless communication comprises a donor enhanced Node B (eNB) transmitting system information for a subframe structure to a relay node (RN), which information comprises radio resource configuration and/or timing information for uplink backhaul transmission. The RN uses an automatic method to select the Round Trip Time (RTT) value for the Hybrid Automatic Repeat request (HARQ) on the uplink backhaul (Un) relay link. The RTT value is implicitly determined according to the Un (backhaul) subframe or MBSFN subframe configuration periodicity. The RTT option is signaled by the Un subframe configuration period of the MBSFN Un downlink signals.
    Type: Grant
    Filed: August 18, 2011
    Date of Patent: August 5, 2014
    Assignee: Futurewei Technologies, Inc.
    Inventors: Zhongfeng Li, Philippe Sartori
  • Patent number: 8787269
    Abstract: A method for communicating with a relay station is disclosed. The method for communicating with a relay station comprises transmitting resource allocation information of downlink traffic and uplink traffic from a base station to the relay; and transmitting the downlink traffic to the relay by encapsulating the downlink traffic in accordance with the resource allocation information and receiving encapsulated uplink traffic from the relay in accordance with the resource allocation information. It is possible to enable efficient communication through a relay using a minimum interface without deterioration of throughput even in the case that a base station does not know detailed attributes of a relay existing in a system. Also, it is possible to coordinate collision through a master relay in case of a system supporting multi-hop relays.
    Type: Grant
    Filed: November 12, 2008
    Date of Patent: July 22, 2014
    Assignee: LG Electronics Inc.
    Inventors: Yeong Hyeon Kwon, Min Seok Noh, Sung Ho Moon, Dong Cheol Kim, Jin Sam Kwak, Hyun Woo Lee, Seung Hee Han
  • Patent number: 8750786
    Abstract: The invention relates to a relay or repeater node (21) for use in a wireless communications system said node comprising a receive antenna (23) for receiving a signal through a wireless connection, an amplifier (30) for amplifying the signal and a transmit antenna (27) for forwarding the amplified signal, said node further comprising a mode switching unit (31) for switching between at least a first and a second mode of operation of the node in dependence of an amplification gain requirement. This enables optimization of the node for varying conditions in the network.
    Type: Grant
    Filed: December 21, 2007
    Date of Patent: June 10, 2014
    Assignee: Telefonaktiebolaget LM Ericsson (Publ)
    Inventors: Peter Larsson, Niklas Johansson
  • Patent number: 8750171
    Abstract: An Femtocell/WLAN communication device, comprising a Femtocell module for cellular wireless communications, the Femtocell module having an input for receiving a first electrical input signal and an output for outputting a first electrical output signal, a WLAN module for WLAN communications, the WLAN module having an input for receiving a second electrical input signal and an output for outputting a second electrical output signal, an optical interface having a first conversion path connected to the output of the Femtocell module, a second conversion path connected to the output of the WLAN module, a third conversion path connected to the input of the Femtocell module, and a fourth conversion path connected to the input of the WLAN module, and a common port for receiving the first optical input signal and the second optical input signal, and for outputting the first optical output signal and the second optical output signal.
    Type: Grant
    Filed: December 27, 2012
    Date of Patent: June 10, 2014
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Egon Schulz, Chan Zhou, Malte Schellmann, Yi Wang
  • Patent number: 8730848
    Abstract: A repeater (1) particularly suitable for a time-division duplex transmission of communication signals is provided. The repeater (1) comprises a master unit (2) for communicating with a base station (3) of a wireless network, at least one remote unit (4) for communicating with a network terminal, as well as a waveguide (11) connecting the remote unit (4) with the master unit (2) for transmitting the communication signals in an uplink direction (6) from the remote unit (4) to the master unit (2) and in a downlink direction (5) from the master unit (2) to the remote unit (4). Both the master unit (2) and the remote unit (4) comprise one switch (19, 20) each for changing over the signal transmission between uplink direction (6) and downlink direction (5).
    Type: Grant
    Filed: March 7, 2009
    Date of Patent: May 20, 2014
    Assignee: Andrew LLC
    Inventors: Peter Schmid, Oliver Braz, Peter Gunzer, Mathias Schmalisch, Joerg Stefanik
  • Patent number: 8705416
    Abstract: An apparatus including a port to transmit first frames and receive second frames over a communication channel, the port including a collision detect circuit and a duplex mismatch circuit. The collision detect circuit detects collisions on the communication channel between the first frames and the second frames. The duplex mismatch circuit declares a duplex mismatch when the communication channel was established without attempting auto-negotiation, the port is in a half-duplex mode, and the collision detect circuit detects a very late collision involving one of the first frames. The very late collision occurs after a predetermined amount of data has been transmitted in the one of the first frames. The duplex mismatch indicates that a full-duplex mode is used with respect to the second frames.
    Type: Grant
    Filed: December 9, 2011
    Date of Patent: April 22, 2014
    Assignee: Marvell World Trade, Ltd.
    Inventors: Donald Pannell, Ozdal Barkan
  • Patent number: 8699547
    Abstract: A method for providing multiple-input multiple-output (MIMO) feedback information and configuration information. The method includes transporting the MIMO feedback information, configuration information, or both over an uplink relay link using higher layer signaling. Also included is a method for providing uplink data transmission over an access link. The method includes transporting the uplink data over an uplink access link using orthogonal frequency-division multiplexing access (OFDMA). Also included is a relay node comprising a processor configured to promote transmitting MIMO feedback information, configuration information, or both over an uplink relay link using higher layer signaling. Also included is a user agent (UA) comprising a processor configured to promote transmitting uplink data over an uplink access link using OFDMA.
    Type: Grant
    Filed: August 24, 2011
    Date of Patent: April 15, 2014
    Assignee: BlackBerry Limited
    Inventors: Yi Yu, James Earl Womack, Zhijun Cai
  • Patent number: 8693492
    Abstract: A network switch includes a transmitter and a controller. The transmitter is configured to selectively terminate transmission of a first frame from the network switch. The controller is configured to, in response to the transmitter terminating the transmission of the first frame, increment respective attempt counts for a first class of service associated with the first frame and all classes of service lower than the first class of service, determine whether any of the respective attempt counts is greater than a predetermined attempt threshold, and, in response to any of the respective attempt counts being greater than the predetermined attempt threshold, discard frames having the first class of service and frames having any of the classes of service lower than the first class of service.
    Type: Grant
    Filed: March 15, 2012
    Date of Patent: April 8, 2014
    Assignee: Marvell International Ltd.
    Inventor: Donald Pannell
  • Patent number: 8686920
    Abstract: A radio repeater system is provided that utilizes miniaturized antennas and a meta-material channel isolator. The radio repeater is comprised of: a receive antenna configured to receive a signal at a desired channel frequency; a transmit antenna configured to transmit the signal at the channel frequency; an amplifier electrically connected between the receive antenna and the transmit antenna; and an array of resonating circuits disposed spatially between the receive antenna and the transmit antenna. Each resonating circuit is designed to resonant at the channel frequency and thereby suppress propagation of surface waves between the antennas.
    Type: Grant
    Filed: May 25, 2011
    Date of Patent: April 1, 2014
    Assignee: The Regents of The University of Michigan
    Inventors: Kamal Sarabandi, Young Jun Song
  • Patent number: 8670338
    Abstract: A radio communication device for executing a communication on the basis of a frequency division duplex, has a first antenna, a second antenna, a first receiver for receiving a first radio frequency signal via the first antenna, a second receiver for receiving the first radio frequency signal via the second antenna, a transmitter for transmitting a second radio frequency signal via the second antenna, a power measuring unit for measuring a first power of a component of the second radio frequency signal in a received signal received via the first antenna, and a control unit for controlling a reactance between the first antenna and the second antenna so as to lower an amount of coupling between the first antenna and the second antenna on the basis of the measured first power.
    Type: Grant
    Filed: November 17, 2010
    Date of Patent: March 11, 2014
    Assignee: Fujitsu Limited
    Inventor: Masahiko Shimizu
  • Patent number: 8660042
    Abstract: A method of extending the coverage of a wireless communication network having two or more nodes communicating over power lines network is provided herein. The method includes: providing the nodes with respective adapters, each one of the adapters coupling its respective node with the power lines network and being further operable in at least one of: receiving mode, transmitting mode; selecting one or more time-division duplex frequency channel or two or more frequency-division duplex frequency channels for communication over the power line media, such that less interfered frequencies are used, to maintain or to yield an increase in wireless communication performance between the nodes; broadcasting over the power line, via at least one of the adaptors, signals or information indicative of a central frequency point for each one of the selected frequency channels; and establishing a communication link over the power lines network between the nodes via the adaptors.
    Type: Grant
    Filed: June 4, 2012
    Date of Patent: February 25, 2014
    Inventor: Mariana Goldhamer
  • Patent number: 8654686
    Abstract: In an embodiment, an application server receives a request to initiate a group communication session (GCS) over a Wireless Wide Area Network (WWAN) with a communication group. The application server obtains location information of a set of devices participating in the GCS and determines that the GCS can be supported between the set of devices via a Personal Area Network (PAN), after which the application server transitions support for the GCS from the WWAN to the PAN. In another embodiment, an originator begins a periodic broadcast of a local PAN signal announcing the GCS after failing to set-up the GCS via the WWAN. Target device(s) in the communication group receive the local PAN signal, determine not to transmit their own local PAN signal and then convey a session acceptance message to the originator. The GCS is then established between the target device(s) and the originator over the PAN.
    Type: Grant
    Filed: May 16, 2011
    Date of Patent: February 18, 2014
    Assignee: QUALCOMM Incorporated
    Inventor: Kirankumar Anchan
  • Patent number: 8655269
    Abstract: A radio base station apparatus includes a determining unit that dynamically determines, based on both quality information and traffic information, collected for each of a first link used for direct communication between a first radio terminal and the base station apparatus, a second link used for direct communication between a second radio terminal and a fixed radio relay apparatus, and a third link used for relay transmission between the base station apparatus and the relay apparatus, of sub-frames in a radio frame as radio resources, a number of sub-frames to be allocated to the each of the first, second and third links and an allocation timing therefor; and a notifying unit that notifies the relay apparatus of allocation information including the number of sub-frames to be allocated to the third link used for the relay transmission and the timing therefor in a period of at least once in the frame.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: February 18, 2014
    Assignee: Fujitsu Limited
    Inventor: Kenji Suda
  • Patent number: 8644196
    Abstract: A device and method for routing network data through a network. The device comprises an end cap assembly which includes an end cap coupled to a wiring card having an interposer board. The method includes processing a plurality of network transmissions through an end cap, and routing the network transmissions to an interposer board.
    Type: Grant
    Filed: December 16, 2011
    Date of Patent: February 4, 2014
    Assignee: Cisco Technology, Inc.
    Inventor: Thomas Spivey
  • Patent number: 8644198
    Abstract: A front end radio architecture (FERA) is disclosed that includes a transmitter block coupled to a power amplifier (PA) via first and second input terminals. A first split-band duplexer is coupled to a first output terminal of the PA and a second split-band duplexer is coupled to a second output terminal of the PA. The PA includes a first amplifier cell and a second amplifier cell that when coupled to the first and second split-band duplexers makes up first and second transmitter chains. Only one of the first and the second transmitter chains is active when a first carrier and a second carrier have a frequency offset that is less than an associated half duplex frequency within a same split-band duplex band, thus preventing third order inter-modulation (IMD) products from falling within an associated receive channel. Otherwise, the first and the second transmitter chains are both active.
    Type: Grant
    Filed: March 11, 2011
    Date of Patent: February 4, 2014
    Assignee: RF Micro Devices, Inc.
    Inventors: Nadim Khlat, Alexander Wayne Hietala
  • Patent number: 8630211
    Abstract: A wireless repeater includes a receiver circuit implemented as an intermediate frequency (IF) subsampling receiver and a transmitter circuit implemented as a direct conversion (zero-IF) transmitter. The repeater further includes a reference receiver implemented as an IF subsampling receiver to sample a portion of the transmit signal prior to over-the-air transmission for use as the reference signal for channel estimation. Highly accurate channel estimation is obtained by using the reference signal from the reference receiver as the reference signal accounts for distortions in the transmitter circuit of the repeater. The repeater may include an echo canceller to cancel an estimated feedback amount from an input signal based on the channel estimation.
    Type: Grant
    Filed: June 30, 2010
    Date of Patent: January 14, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Kenneth M. Gainey, James Arthur Proctor, Jr., Dhananjay Ashok Gore
  • Patent number: 8626061
    Abstract: Provided is a method and apparatus for calculating an isolation distance that is a distance where an interference phenomenon does not occur between wireless repeater apparatuses. The isolation distance calculating apparatus may include: an interference signal calculator to calculate a magnitude of an interference signal included in a particular band by detecting a signal of the particular band extracted from a received radio signal of a wireless repeater apparatus; and an isolation distance calculator to calculate a necessary isolation distance for cancelling interference between the wireless repeater apparatus and another wireless repeater apparatus, based on a predetermined allowable interference signal level and the magnitude of the interference signal.
    Type: Grant
    Filed: October 28, 2010
    Date of Patent: January 7, 2014
    Assignee: Electronics and Telecommunications Research Institute
    Inventor: Ho Kyung Son
  • Publication number: 20140003306
    Abstract: A method and system for communicating data between two devices are described herein. The method detects an electrical signal of a first protocol from a first device in a repeater, wherein the first protocol comprises single-ended signaling. The method also determines the speed of the electrical signal. Additionally, the method converts the electrical signal of the first protocol into an electrical signal of a second protocol based on the speed of the electrical signal. The second protocol comprises differential signaling. Furthermore, the method sends the electrical signal of the second protocol to a second device. In addition, the method stops the electrical signal of the second protocol to the second device when the electrical signal of the second protocol indicates an end of data flow.
    Type: Application
    Filed: June 30, 2012
    Publication date: January 2, 2014
    Applicant: INTEL CORPORATION
    Inventors: Huimin CHEN, Kok Hong CHAN
  • Patent number: 8620376
    Abstract: A method and apparatus for adaptively selecting a Peer-to-Peer (P2P) communication mode in a wireless communication system are provided. In a method of operating a Base Station (BS) for establishing a P2P connection between Mobile Stations (MSs) in the wireless communication system, the method includes, upon receiving a connection request message from a transmitting MS, broadcasting an instruction message to one or more neighbor MSs, receiving P2P-related information from a receiving MS among the neighbor MSs, selecting a communication mode by determining whether P2P communication is possible between MSs according to the P2P-related information and, if P2P communication is possible between the MSs, transmitting a connection response message to the transmitting MS and the receiving MS.
    Type: Grant
    Filed: July 8, 2008
    Date of Patent: December 31, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Il-Won Kwon, Yung-Soo Kim
  • Patent number: 8577283
    Abstract: A repeater that facilitates communication in a wireless environment comprises a scheduling component that analyzes a schedule relating to when communications are active in the forward link direction and when communications are active in the reverse link direction, the communications are subject to time division duplexing. An amplifier that amplifies received communications as a function of the schedule. The repeater can further comprise a configuration component that configures the amplifier to amplify the received communications in one or more of a forward link direction and a reverse link direction.
    Type: Grant
    Filed: July 15, 2005
    Date of Patent: November 5, 2013
    Assignee: QUALCOMM Incorporated
    Inventors: Richard Finch Dean, Kenneth Robert Baker
  • Patent number: 8570917
    Abstract: A relay station relays packets between a transmitting station and a receiving station, and when a transmission packet affixed with a packet number is received, the relay station generates a divided data unit by dividing the data included in the transmission packet, then generates a divided packet including the divided data unit affixed with the packet number and dividing position information indicating the dividing position of the divided data unit, and transmits the divided packet to the receiving station. Alternatively, the relay station generates a divided data unit by dividing the data in the received transmission packet, then generates a divided packet including the divided data unit affixed with a new packet number, and transmits the divided packet to the receiving station. An ARQ process is executed using the dividing position information or the new packet number included in the divided packet.
    Type: Grant
    Filed: December 16, 2011
    Date of Patent: October 29, 2013
    Assignee: Fujitsu Limited
    Inventor: Masato Okuda