Frequency Division Patents (Class 370/281)
  • Patent number: 8576755
    Abstract: An apparatus and method for establishing a relay transition time in a network node in a wireless communication system comprising comparing a network node transmit/receive (TX/RX) switch time to a switch threshold; and using a fraction of the cyclic prefix (CP) as a guard period if the network node TX/RX switch time is less than or equal to the switch threshold, or using a sounding reference signal (SRS) configured channel to blank out a last symbol if the network node TX/RX switch time is greater than the switch threshold.
    Type: Grant
    Filed: January 10, 2011
    Date of Patent: November 5, 2013
    Assignee: QUALCOMM Incorporated
    Inventors: Dung Ngoc Doan, Wanshi Chen, Ravi Palanki, Parag Arun Agashe, Aamod Dinkar Khandekar, Juan Montojo
  • Publication number: 20130286907
    Abstract: A method includes determining one of a multiplicity of subframes in a resource space in which a shortened subframe is to be communicated. Each of the subframes has a predetermined number of symbol positions. The resource space includes the multiplicity of subframes. The method includes communicating the shortened subframe in the determined subframe. The shortened subframe has a multiplicity of active symbols at first symbol positions in the determined subframe and has a multiplicity of blanked symbols at second symbol positions in the determined subframe. In an embodiment, each of the subframes is a first subframe carried on subcarrier. The resource space corresponds to a special subframe in a frame including the special subframe and a multiplicity of second subframes. The special subframe and the plurality of second subframes are located in different timeslots. Apparatus, computer programs, and program products are also disclosed.
    Type: Application
    Filed: October 20, 2010
    Publication date: October 31, 2013
    Applicant: NOKIA CORPORATION
    Inventors: Na Wei, Chunyan Gao, Haiming Wang, Wei Bai, Wei Hong, Jing Han
  • Patent number: 8565166
    Abstract: A user apparatus generates an uplink control channel including at least one of acknowledgement information and channel condition information on an downlink, and transmits the uplink control channel in a predefined dedicated band if no resource is assigned to transmit an uplink data channel. The uplink control channel includes multiple unit block sequences resulting from multiplication of the same factor with all chips of a CAZAC code sequence for the user apparatus.
    Type: Grant
    Filed: October 1, 2007
    Date of Patent: October 22, 2013
    Assignee: NTT DoCoMo, Inc.
    Inventors: Teruo Kawamura, Kenichi Higuchi, Mamoru Sawahashi
  • Publication number: 20130272175
    Abstract: A frequency-division duplexing (FDD) transceiver includes a first mixer to up-convert a transmit signal and a first switch, coupled to the first mixer, to selectively provide a transmit local oscillator signal or a receive local oscillator signal to the first mixer. The transmit local oscillator signal has a first frequency and the receive local oscillator signal has a second frequency distinct from the first frequency. The FDD transceiver also includes a second mixer to down-convert a receive signal and a second switch, coupled to the second mixer, to selectively provide the transmit local oscillator signal or the receive local oscillator signal to the second mixer.
    Type: Application
    Filed: January 22, 2013
    Publication date: October 17, 2013
    Applicant: QUALCOMM Incorporated
    Inventors: Masoud ZARGARI, Shahram ABDOLLAHI-ALIBEIK
  • Patent number: 8553592
    Abstract: Embodiments of a multi-radio communication device and method for enabling coexistence between a Bluetooth transceiver and a broadband wireless access network (BWAN) transceiver are generally described herein. In some embodiments, the BWAN transceiver is configured to transmit a reservation request to a BWAN base station to reserve an amount of time during which no uplink transmissions are scheduled. The reservation request is configured to allow the Bluetooth transceiver to receive packets from a Bluetooth device without interference from transmissions by the BWAN transceiver.
    Type: Grant
    Filed: April 17, 2009
    Date of Patent: October 8, 2013
    Assignee: Intel Corporation
    Inventor: Xue Yang
  • Patent number: 8553593
    Abstract: A method for performing communication using a frame structure that supports a half-frequency division duplex (H-FDD) operation and a device using the same are disclosed. A base station performs resource allocation scheduling to support H-FDD user equipment operation in a mobile communication system. For example, the base station allocates first, second and last uplink subframes for idle subframes within a specific frame or punctures them, so that the H-FDD user equipment does not use the uplink subframes. The base station transmits the scheduled resource allocation information to the user equipment through a superframe header, a preamble and a MAP. The user equipment which has received the scheduled resource allocation information (subframe index and location that can be used by the user equipment) transmits and receives a signal based on the resource allocation information.
    Type: Grant
    Filed: June 17, 2010
    Date of Patent: October 8, 2013
    Assignee: LG Electronics Inc.
    Inventors: Dong Guk Lim, Sung Ho Moon, Han Gyu Cho, Yeong Hyeon Kwon, Jin Sam Kwak
  • Publication number: 20130258915
    Abstract: A wireless device includes an input/output port that receives a first transmission signal subjected to transmission processing by another wireless device, the first transmission signal being output from the another wireless device, the another wireless device using a second frequency band adjacent to a first frequency band used by the wireless device, a synthesis circuit that synthesizes the first transmission signal received via the port and a second transmission signal subjected to transmission processing by the wireless device and that outputs the synthesized signal via an antenna, and a splitting circuit that splitbranches a first reception signal of the first frequency band and a second reception signal of the second frequency band, the first and the second reception signals being included in a reception signal received via the antenna, the splitting circuit outputting a split reception signal of the second frequency band via the port to the other wireless device.
    Type: Application
    Filed: March 28, 2013
    Publication date: October 3, 2013
    Applicant: FUJITSU LIMITED
    Inventors: Hideyuki KANNARI, Masanori HARA
  • Publication number: 20130258873
    Abstract: Embodiments of a method and apparatus for performing an adaptive transmission scheme in a frequency division duplexing communication system based on channel state information estimated using an open-loop mode are described herein. In one example, the method includes estimating an impulse response of a channel using a signal received over a first frequency band of the channel from a device, transforming the impulse response into a frequency response of the channel, and subsequently performing the adaptive transmission scheme using the frequency response to transmit a signal to the device over a second frequency band of the channel that is different from the first frequency band.
    Type: Application
    Filed: March 30, 2012
    Publication date: October 3, 2013
    Applicant: Broadcom Corporation
    Inventors: Erik Richard Stauffer, Kamlesh Rath, Ying Xia, Bertrand Hochwald
  • Patent number: 8547883
    Abstract: A system and method for transmitting resource allocation information by a base station in a communication system is provided. The method includes generating first MAP messages for user terminals, each of which includes an identifier of a corresponding user terminal and corresponds to resource allocation information on a first band, in an order of user terminals, generating a second MAP message, which corresponds to resource allocation information for a user terminal allocated resources of only a second band, and generating third MAP messages, which correspond to resource allocation information on the second band, for user terminals allocated resources of both the first band and the second band, among the user terminals, in the order of user terminals allocated resources of both the first band and the second band, transmitting the first MAP message through the first band, and transmitting the second and third MAP messages through the second band.
    Type: Grant
    Filed: August 19, 2008
    Date of Patent: October 1, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Young-Ho Jung, Yung-Soo Kim, Myeon-Kyun Cho
  • Patent number: 8547896
    Abstract: Disclosed is a method in which a relay node transmits/receives signals via a specific downlink subframe and a specific uplink subframe. The relay node may consider the propagation delay in accordance with the distance between a base station and the relay node to set a subframe timing for transmitting/receiving signals to/from the base station. The relay node may further consider the delay time of 0.5 symbol, 1 symbol or the like in addition to said propagation delay in the event of setting a downlink receiving timing. Setting an uplink subframe timing of the relay node can be divided into the event the timing is set on the basis of a backhaul link and the event the timing is set on the basis of an access link. In the event the timing is set on the basis of the access link, the propagation delay can be double that of the event the timing is set on the basis of the backhaul link, which should be considered in setting the timing.
    Type: Grant
    Filed: February 18, 2010
    Date of Patent: October 1, 2013
    Assignee: LG Electronics Inc.
    Inventors: Kyu Jin Park, Jae Hoon Chung, Han Gyu Cho, Yeong Hyeon Kwon, Min Seok Noh, Moon Il Lee, Sung Ho Moon
  • Patent number: 8547927
    Abstract: A method for a user equipment to perform random access to a base station in a wireless communication system that supports multiple uplink and downlink carriers is provided. In the method, system information including cell identifier information of each of the downlink component carriers and PRACH TF slot and preamble sequence information which is common to all downlink component carriers, the system information being broadcast through each downlink component carrier corresponding to the cell identifier information, is received. A PRACH preamble is transmitted through one uplink component carrier linked to the downlink component carriers using the received PRACH TF slot and preamble sequence information. An RACH response is received through each of the downlink component carriers.
    Type: Grant
    Filed: November 3, 2009
    Date of Patent: October 1, 2013
    Assignee: LG Electronics Inc.
    Inventors: Dong Youn Seo, Jung Hoon Lee, Ki Jun Kim, Joon Kui Ahn
  • Patent number: 8542617
    Abstract: Methods and apparatus that enable a wireless network system to dynamically change between full-duplex FDD operation and half-duplex FDD operation in order to take advantage of operational aspects of both modes. In one embodiment, an alternative duplex mode of operation is disclosed (semi-static half duplex FDD operation) that enables coordination between the client device (e.g., UMTS UE) and the base station in order to centralize control of radio resource control (RRC) to the base station. The disclosed methods and apparatus may also advantageously incorporate hybrid ARQ (HARQ) or comparable timing requirements into their operation.
    Type: Grant
    Filed: June 2, 2008
    Date of Patent: September 24, 2013
    Assignee: Apple Inc.
    Inventors: Hyung-Nam Choi, Maik Bienas, Martin Hans
  • Publication number: 20130242766
    Abstract: A method, an apparatus, and a computer program product for wireless communication are provided. The apparatus updates a CIE in guaranteed non-MBSFN subframes. The apparatus refrains from updating at least one of an AGC, a TTL, an FTL, or an SNR estimation (FTL_SNR) in potential MBSFN subframes before a SIB is decoded to ascertain which subframes of a radio frame are MBSFN subframes and non-MBSFN subframes. The MBSFN subframes include a subset of the potential MBSFN subframes. The non-MBSFN subframes include a remaining subset of the potential MBSFN subframes and the guaranteed non-MBSFN subframes.
    Type: Application
    Filed: June 13, 2012
    Publication date: September 19, 2013
    Applicant: QUALCOMM Incorporated
    Inventors: Huilin XU, Raghu Narayan Challa, Rebecca Wen-Ling Yuan, Anant Hegde
  • Publication number: 20130242824
    Abstract: A method and apparatus for half-duplex (HD) frequency division duplex (FDD) (HD-FDD) operation are disclosed. The method in a wireless transmit/receive unit (WTRU) includes monitoring a first frequency for all downlink sub-frames for downlink communication except during a cell specific uplink frame, retuning to a second frequency and transmitting a scheduling request (SR) during a WTRU specific period of the cell specific uplink frame, wherein the WTRU specific period is based on a duty cycle, and retuning to the first frequency and receiving an uplink grant in a subsequent sub-frame.
    Type: Application
    Filed: March 15, 2013
    Publication date: September 19, 2013
    Applicant: InterDigital Patent Holdings, Inc.
    Inventors: Moon-il Lee, Allan Y. Tsai, Pouriya Sadaghi, Fengjun Xi, Marian Rudolf, Janet A. Stern-Berkowitz
  • Publication number: 20130235769
    Abstract: Certain aspects of the present disclosure relate to techniques and apparatus for enabling non-destaggered channel estimation. In aspects, a method for wireless communications is provided including determining a first channel impulse response (CIR) based on a first set of received reference signals staggered in time, determining a second CIR based on a second set of received reference signals from the same sub-frame time slot, wherein a reference signal is associated with one of a plurality of virtual transmit antenna ports, and aligning the first CIR and the second CIR based, at least in part, on a time tracking loop (TTL) timing offset.
    Type: Application
    Filed: March 6, 2013
    Publication date: September 12, 2013
    Applicant: QUALCOMM INCORPORATED
    Inventors: Rebecca Wen-Ling Yuan, Raghu Narayan Challa
  • Patent number: 8531999
    Abstract: A communication supporting half-duplex frequency division duplex and receiving a broadcast message. A control signal for a broadcast message is received and decoded partially or entirely according to an indication bit included in the control signal.
    Type: Grant
    Filed: October 20, 2008
    Date of Patent: September 10, 2013
    Assignee: LG Electronics Inc.
    Inventors: Jin Young Chun, Bin Chul Ihm, Jin Sam Kwak, Ki Seon Ryu
  • Publication number: 20130229958
    Abstract: The base station includes a scheduler controller that controls scheduling operations of a downlink and an uplink. The scheduler controller controls the scheduling operation of the DL and the UL in accordance with a first criterion such that a subframe of user equipment which includes UL data starts, prior to termination of a subframe of base station not including DL data, a second criterion such that the subframe of the user equipment which does not include the UL data starts, prior to the termination of the subframe of the base station including the DL data, or a third criterion such that the subframe of the user equipment which includes a signal other than an ACK/NACK starts, prior to the termination of the subframe of the base station including the DL data.
    Type: Application
    Filed: November 28, 2011
    Publication date: September 5, 2013
    Applicant: NTT DOCOMO, INC.
    Inventors: Yuta Sagae, Hiroyuki Ishii, Naoto Ookubo, Anil Umesh
  • Publication number: 20130229952
    Abstract: In accordance with an example embodiment of the present invention, an apparatus, comprising at least one processor; and at least one memory including computer program code; the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus to perform at least the following: deciding to switch to a half-duplex mode of operations upon detecting a triggering condition including that multiple radio stacks are activated at the apparatus simultaneously; signaling an associated base station the decision of switching to the half-duplex mode half-duplex mode; and entering the half-duplex mode of operation, is disclosed.
    Type: Application
    Filed: September 30, 2011
    Publication date: September 5, 2013
    Applicant: NOKIA CORPORATION
    Inventors: Henri Markus Koskinen, Jussi Kustaa Ojala, Antti-Veikko Piipponen, Tommi Juhani Zetterman
  • Publication number: 20130229953
    Abstract: A base station in a heterogeneous network is configured to communicate with a plurality of base stations via a backhaul link and configured to communicate with a plurality of subscriber stations. The base station includes a transmit path configured to transmit data, reference signals, synchronization signals and control elements to at least one of the plurality of subscriber stations. The base station also includes processing circuitry configured to map primary synchronization signals (PSS) and secondary synchronization signals (SSS) onto each of a carrier of a first carrier type and a carrier of a second carrier type. The PSS and SSS on the second carrier type are mapped onto different time locations than in the first carrier type. In addition, the PSS/SSS are mapped onto consecutive resource elements (REs) on each of the carrier of the first type and the carrier of the second type.
    Type: Application
    Filed: August 10, 2012
    Publication date: September 5, 2013
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Young-Han Nam, Boon Loong Ng, Jianzhong Zhang
  • Publication number: 20130229957
    Abstract: Various methods of dynamically allocating resources to user equipments in a DMC group are provided. By way of example, some methods dynamically allocate resources to user equipments in a DMC group in a manner that avoids interfering with user equipments outside the DMC group. Other methods dynamically allocate resources to user equipments in a DMC group in a manner that specifically identifies which of the user equipments in the DMC group is authorized to transmit and which are required to receive.
    Type: Application
    Filed: March 1, 2012
    Publication date: September 5, 2013
    Applicant: FutureWei Technologies, Inc.
    Inventors: Philippe Sartori, Deping Liu
  • Patent number: 8526294
    Abstract: An integrated circuit and a method for transmitting messages from initiator units of an integrated circuit to at least one target unit of the integrated circuit. The initiator units transform first digital messages into second digital messages, the second messages being added, then transmitted to the target unit. The transformation of the first messages into second messages comprises the application of an orthogonal transformation by means of vectors obtained from rows or columns of an identity matrix.
    Type: Grant
    Filed: November 29, 2010
    Date of Patent: September 3, 2013
    Assignee: ST-Ericsson SA
    Inventor: Abdelaziz Goulahsen
  • Patent number: 8526412
    Abstract: Techniques for multiplexing multiple data streams using frequency division multiplexing (FDM) in an OFDM system are described. M disjoint “interlaces” are formed with U usable subbands. Each interlace is a different set of S subbands, where U=M·S. The subbands for each interlace are interlaced with the subbands for each of the other M?1 interlaces. M slots may be defined for each symbol period and assigned slot indices 1 through M. The slot indices may be mapped to interlaces such that (1) frequency diversity is achieved for each slot index and (2) the interlaces used for pilot transmission have varying distances to the interlaces used for each slot index, which improves channel estimation performance. Each data stream may be processed as data packets of a fixed size, and different numbers of slots may be used for each data packet depending on the coding and modulation scheme used for the data packet.
    Type: Grant
    Filed: October 18, 2004
    Date of Patent: September 3, 2013
    Assignee: QUALCOMM Incorporated
    Inventors: Rajiv Vijayan, Gordon Kent Walker, Raghuraman Krishnamoorthi, Murali R. Chari
  • Publication number: 20130223301
    Abstract: The present invention relates to a wireless communication system, and more particularly, to an uplink control information transmitting/receiving method and device. A method of transmitting acknowledgement information in a wireless communication system by a terminal according to an embodiment of the present invention includes: determining whether transmission of a scheduling request is set in one subframe where acknowledgement information on downlink transmission is to be transmitted; determining a Physical Uplink Control Channel (PUCCH) format and a resource with which the acknowledgement information is to be transmitted; and transmitting the acknowledgement information by using the PUCCH format and the resource.
    Type: Application
    Filed: November 11, 2011
    Publication date: August 29, 2013
    Applicant: LG ELECTRONICS INC.
    Inventors: Hyunwoo Lee, Jaehoon Chung, Seunghee Han
  • Publication number: 20130223298
    Abstract: According to the invention, a wireless device communicates with a base station by applying a first downlink-uplink (DL-UL) setting that sets a plurality of downlink subframes and a plurality of uplink subframes at different times. The wireless device communicates with the base station by using at least one auxiliary subframe when receiving a second UL-DL setting from the base station.
    Type: Application
    Filed: March 23, 2012
    Publication date: August 29, 2013
    Applicant: LG ELECTRONICS INC.
    Inventors: Joon Kui Ahn, Suck Chel Yang, Min Gyu Kim, Dong Youn Seo
  • Patent number: 8520561
    Abstract: In some embodiments, a satellite communications network dynamically regulates carrier assignment for bidirectional communications between a satellite and radioterminals. The satellite communications network includes a resource manager that regulates the carrier assignments by selecting among a plurality of FDD return subcarriers, with potentially different subcarrier bandwidths and supporting different radio access technologies, within at least one FDD return carrier grouping for coupling to a selected one of a plurality of FDD forward carriers, and by controlling the satellite network to receive communications from the radioterminal on the selected FDD return subcarrier and to transmit communications to the radioterminal on the selected FDD forward carrier.
    Type: Grant
    Filed: February 3, 2010
    Date of Patent: August 27, 2013
    Assignee: ATC Technologies, LLC
    Inventors: Serge Nguyen, Santanu Dutta
  • Patent number: 8520494
    Abstract: A radio communication system is provided. An uplink transmission method of a user equipment in a radio communication system includes performing Fourier transform on one or more data sequences to generate one or more first frequency-domain sequences, applying precoding for multi-antenna transmission to the one or more first frequency-domain sequences to generate one or more second frequency-domain sequences; performing inverse Fourier transform on the one or more second frequency-domain sequences to generate one or more transmission symbols, and transmitting the one or more transmission symbols via multiple antennas.
    Type: Grant
    Filed: August 13, 2009
    Date of Patent: August 27, 2013
    Assignee: LG Electronics Inc.
    Inventors: Suck Chel Yang, Joon Kui Ahn, Dong Youn Seo, Dae Won Lee, Yu Jin Noh, Bong Hoe Kim, Jung Hoon Lee
  • Publication number: 20130215806
    Abstract: A bidirectional wireless communication system includes: a first wireless communication apparatus for bidirectional communication configured to multiplex a modulated signal obtained by modulating an input signal by a reference carrier signal having a predetermined carrier frequency, and transmit a resultant transmission signal; and a second wireless communication apparatus, having an oscillator configured to oscillate a signal having a free-running oscillation frequency, configured to inject a reception signal received from the first wireless communication apparatus into the oscillator, receive the reception signal while variably controlling the free-running oscillation frequency of the oscillator of the second wireless communication apparatus, detect whether the free-running oscillation frequency of the signal of the oscillator of the second wireless communication apparatus has entered the frequency range up to the injection locking to be frequency-locked with a carrier frequency of the injected reception sig
    Type: Application
    Filed: April 3, 2013
    Publication date: August 22, 2013
    Applicant: Sony Corporation
    Inventor: Sony Corporation
  • Publication number: 20130215805
    Abstract: The current subject matter relates to a system and a method for processing signals. The system can include a transmitting antenna for transmitting a signal over a plurality of wireless spectrum fragments, a receiving antenna for receiving a signal from the plurality of wireless spectrum fragments, and a signal processing layer in communication with the transmitting and receiving antennas for simultaneously causing reception of the received signal and transmission of the transmitted signal. The signal processing layer can include an interference cancellation component for removing a first portion of interference from the received signal and a filtering component for removing a second portion of the interference from the received signal.
    Type: Application
    Filed: February 7, 2013
    Publication date: August 22, 2013
    Applicant: The Board of Trustees of the Leland Stanford Junior University
    Inventor: The Board of Trustees of the Leland Stanford Junior University
  • Publication number: 20130215807
    Abstract: A method and apparatus for transmitting uplink control information in an FDD wireless communication system, in which a plurality of cells are arranged, are provided. The method includes: receiving one or more PDCCH signals and one or more PDSCH signals corresponding to the PDCCH signals in downlink subframe N; generating ACK/NACK information on the basis of the result of the acknowledgement of receipt of at least the one or more PDSCH signals; and transmitting the ACK/NACK information through a PUCCH. If a predetermined condition is satisfied, at least one of the PDCCH signals includes information indicating a DAI value, and if the predetermined condition is not satisfied, at least one of the PDCCH signals includes information indicating a value of a PUCCH resource for the ACK/NACK information. The information indicating the DAI value and the information indicating the value of the PUCCH resource are provided in the same field.
    Type: Application
    Filed: October 26, 2011
    Publication date: August 22, 2013
    Applicant: LG ELECTRONICS INC.
    Inventors: Suckchel Yang, Joonkui Ahn, Dongyoun Seo, Mingyu Kim
  • Patent number: 8509158
    Abstract: Systems and methods for communication are disclosed. A system in accordance with the present invention comprises a communications system, comprising at least one transmitter station and at least one receiver station, the transmitter station and receiver station communicating using an Orthogonal Frequency Division Multiplexing (OFDM) schema, wherein OFDM signals are transmitted in a notched frequency band arrangement such that at least one other transmission within a notch of the notched frequency band is used outside of the communications system.
    Type: Grant
    Filed: September 18, 2006
    Date of Patent: August 13, 2013
    Assignee: The DIRECTV Group, Inc.
    Inventor: John L. Norin
  • Patent number: 8509124
    Abstract: A method of transmitting a signal using a prescribed frame structure in a wireless communication system is disclosed. A mobile station can transmit or receive a signal using a frame structure with a CP length corresponding to ¼ of a useful symbol. Moreover, the mobile station can transmit or receive a signal using a frame structure with a CP length corresponding to ¼ of a useful symbol.
    Type: Grant
    Filed: April 1, 2010
    Date of Patent: August 13, 2013
    Assignee: LG Electronics Inc.
    Inventors: Dong Guk Lim, Sung Ho Moon, Han Gyu Cho, Yeong Hyeon Kwon, Jin Sam Kwak
  • Patent number: 8509176
    Abstract: A method of transmitting and receiving data in a wireless communication system is disclosed. In the method of transmitting the data in the wireless communication system, a base station transmits downlink data to a first terminal supporting a first system through a first zone of a frame, and transmits downlink data to a second terminal supporting a second system through a second zone located at a location separated from the first zone backwardly by a frame offset on a time axis. The wireless communication system may support a bandwidth of 8.75 MHz, the frame offset is an offset between a start point of a frame for the first system and a start point of a frame for the second system, and the first zone includes 3+6*(frame offset?1) Orthogonal Frequency Division Multiplexing (OFDM) symbols.
    Type: Grant
    Filed: April 12, 2010
    Date of Patent: August 13, 2013
    Assignee: LG Electronics Inc.
    Inventors: Wook Bong Lee, Han Gyu Cho, Sung Ho Moon, Jin Sam Kwak, Bin Chul Ihm, Min Seok Noh
  • Patent number: 8503284
    Abstract: A pilot arrangement method in a mobile communication system in which a working frequency band is divided into a plurality of predetermined bands, and time division multiplexing is performed, the method comprising, inserting a known pilot symbol into the plurality of predetermined frequency bands at a predetermined reference interval; and inserting to arrange the known pilot symbol into at least one of the plurality of predetermined frequency bands at a smaller interval than the predetermined reference interval, wherein a pattern inserting the known pilot symbol into a at least the one of the plurality of predetermined frequency bands at the smaller interval is changed according to a predetermined pattern.
    Type: Grant
    Filed: May 13, 2010
    Date of Patent: August 6, 2013
    Assignee: Fujitsu Limited
    Inventors: Kenji Suda, Hiroyuki Seki
  • Publication number: 20130188537
    Abstract: The invention concerns a method for scheduling frequency channels implemented in a device for a narrowband radiocommunication system sharing with a broadband radiocommunication system, each comprising a narrowband base station and a broadband base station, and the same frequency band, the frequency band being in part divided into a given number of frequency blocks, each comprising a given number of carrier frequencies to optionally be allocated to the narrowband base stations.
    Type: Application
    Filed: March 10, 2011
    Publication date: July 25, 2013
    Applicant: CASSIDIAN SAS
    Inventors: Gerard Marque-Pucheu, Christophe Gruet, Vincent Seguy
  • Publication number: 20130188536
    Abstract: The specification and drawings present a new method, apparatus and software related product (e.g., a computer readable memory) for configuring/implementing full-duplex communications between UEs and a network on a partial frequency domain in wireless communications, e.g., in LTE systems. This may allow UEs with different transmission capabilities to operate on the same deployment bandwidth and to use time dependence of an operational mode. According to an embodiment, a network element, such as eNB, may configure a deployment bandwidth in a frequency domain for wireless communications between UEs and the network, wherein one or more full-duplex regions of the deployment bandwidth are allocated for full-duplex communications and one or more half-duplex regions of the deployment bandwidth are allocated for half-duplex communications.
    Type: Application
    Filed: February 1, 2012
    Publication date: July 25, 2013
    Inventors: Juho Mikko Oskari Pirskanen, Sami-Jukka Hakola, Juha P. Karjalainen, Timo K. Koskela, Samuli Turtinen
  • Patent number: 8493926
    Abstract: A cellular communication system comprises a first base station serving at least a first user equipment. The base station comprises functionality for transmitting a base station duplex capability message to user equipments using a transmission format which is common to a plurality of duplex modes. A first user equipment comprises a transceiver which receives the base station duplex capability message. A RACH characteristics processor determines at least one transmit characteristic for an access message in response to the base station duplex capability message and a RACH transmit controller controls the transmission of an access message to the first base station in response to the at least one transmit characteristic.
    Type: Grant
    Filed: September 30, 2005
    Date of Patent: July 23, 2013
    Assignee: Sony Corporation
    Inventors: Martin Warwick Beale, Alan E. Jones
  • Patent number: 8494006
    Abstract: A method and apparatus for transmitting a downlink reference signal in a wireless communication system supporting multiple antennas is disclosed. A method for transmitting Channel State Information-Reference Signals (CSI-RSs) for eight or less antenna ports includes selecting one of a plurality of CSI-RS Resource Element (RE) groups defined on a data region of a downlink subframe and mapping CSI-RSs for the eight or less antenna ports to the selected CSI-RS RE group, and transmitting the downlink subframe in which the CSI-RSs for the eight or less antenna ports are mapped. The plurality of CSI-RS RE groups is defined such that a transmission diversity RE pair for data transmitted on the downlink subframe is not broken.
    Type: Grant
    Filed: January 14, 2011
    Date of Patent: July 23, 2013
    Assignee: LG Electronics Inc.
    Inventors: Dae Won Lee, Hak Seong Kim, Byoung Hoon Kim, Ki Jun Kim, Eun Sun Kim
  • Publication number: 20130176918
    Abstract: A method for transmitting HARQ-ACK information based on transmission diversity is provided. The method includes configuring two component carriers, referred to as Cells, for a User Equipment (UE); when a base station configures the UE to transmit HARQ-ACK information adopting the transmission diversity technique, the base station indicates dynamically whether an other Cell is scheduled in the same subframe via a PDCCH scheduling a PDSCH of one Cell, so as to enable the UE to know the number of Cells scheduled in the same downlink subframe by the base station, and to generate HARQ-ACK information based on the number of Cells. Unnecessary spatial bundling of the HARQ-ACK information may be avoided, unnecessary downlink data retransmission is reduced and throughput of downlink data is improved.
    Type: Application
    Filed: January 7, 2013
    Publication date: July 11, 2013
    Applicant: Samsung Electronics Co., Ltd.
    Inventor: Samsung Electronics Co., Ltd.
  • Patent number: 8483742
    Abstract: A method and apparatus for controlling uplink power in a wireless communication system are disclosed. The uplink power controlling method includes receiving target Signal-to-Interference plus Noise Ratio (SINR) parameters and an uplink noise and interference level from a base station, determining an uplink power based on a target SINR and an estimated average power level of noise and interference of a user equipment, the target SINR being determined using the target SINR parameters and the estimated average power level of noise and interference of the user equipment being calculated using the uplink noise and interference level, and receiving at least one of selectively transmitted first and second offsets from the base station and adjusting the uplink power based on the received at least one of the first and second offsets.
    Type: Grant
    Filed: July 26, 2010
    Date of Patent: July 9, 2013
    Assignee: LG Electronics Inc.
    Inventors: Dong Cheol Kim, Wook Bong Lee, Han Gyu Cho, Jin Sam Kwak, Bin Chul Ihm
  • Publication number: 20130170407
    Abstract: The present invention provides as method and a user UE for mapping ACK/NACK response messages. The method comprises the UE determining number L of bits of ACK/NACK response messages according to predetermined conditions, wherein, the predetermined conditions include at least one of: a number of downlink component carriers or cells that are allocated to the UE by a base station, and a transmission mode of each of the downlink component carriers; and the UE mapping the ACK/NACK response messages to the L bits so as to handle them correctly.
    Type: Application
    Filed: June 30, 2011
    Publication date: July 4, 2013
    Applicant: ZTE CORPORATION
    Inventors: Chunli Liang, Bo Dai, Weiwei Yang, Peng Zhu
  • Publication number: 20130170408
    Abstract: The disclosure discloses a method and device for allocating Hybrid Automatic Repeat Request (HARQ) processes. The method comprises: a Radio Network Controller (RNC) transmits a notification message carrying a downgraded capability category of a User Equipment (UE) to a Node B; and the Node B allocates HARQ processes for the UE by using a total number of soft channel bits corresponding to the downgraded capability category. The disclosure improves the accuracy of the allocation, thus improving the system performance.
    Type: Application
    Filed: May 31, 2011
    Publication date: July 4, 2013
    Applicant: ZTE CORPORATION
    Inventors: Haiyan Zhang, Yazhu Ke
  • Publication number: 20130163484
    Abstract: The present invention relates to an apparatus and a method for transmitting/receiving signals by using a preset frame structure in a wireless communication system. As there are difficulties ensuring the link capacity and quality for a high speed moving object with the existing frame structure and the antenna arrangement and communication system based on the existing scheme, a new frame structure needs to be proposed. According to one example of those newly proposed frame structures, one frame is composed of 8 subframes, each of the 8 subframes being composed of orthogonal frequency division multiple access (OFDMA) symbols in a range of 11 to 14, and the cyclic prefix (CP) length of the frame is ? or less of an effective symbol length (e.g., ?, 1/16, 1/31, 1/64).
    Type: Application
    Filed: September 20, 2010
    Publication date: June 27, 2013
    Applicant: LG ELECTRONICS INC.
    Inventors: Binchul Ihm, Wookbong Lee, Moonil Lee, Sunam Kim, Hyunsoo Ko, Sungho Park, Jaho Koo, Jinyoung Chun, Seunghyun Kang
  • Publication number: 20130163486
    Abstract: A wireless communication terminal and method for determining a number of Physical Hybrid ARQ Indicator Channel (PHICH) groups (N) in the downlink subframe based on a first parameter, a second parameter and a determined cyclic prefix (CP) duration, wherein the first parameter indicates a downlink system bandwidth in terms of a number of resource blocks and the second parameter indicates a scaling factor. The terminal receives downlink control signaling in a set of resource elements in the subframe, wherein the set of resource elements is determined based partly on the number of PHICH groups (N).
    Type: Application
    Filed: February 18, 2013
    Publication date: June 27, 2013
    Applicant: MOTOROLA MOBILITY LLC
    Inventor: MOTOROLA MOBILITY LLC
  • Publication number: 20130163485
    Abstract: Embodiments of the present invention provide a method and a device for allocating a backhaul link resource. The method includes: selecting, by a first base station, at least one subframe in an uplink (UL) frequency band in a frequency division duplex (FDD) wireless communication system; and allocating the selected at least one subframe as a backhaul link resource between the first base station and a second base station. With the method, the device and the system for allocating a backhaul link resource according to the embodiments of the present invention, a subframe is selected in an unexhausted frequency band in existing bandwidth resources and allocated to a wireless backhaul link. Therefore, the existing bandwidth resources are released, resources are allocated to wireless backhaul links, and costs of the communication system are saved.
    Type: Application
    Filed: February 21, 2013
    Publication date: June 27, 2013
    Applicant: Huawei Technologies Co., Ltd.
    Inventor: Huawei Technologies Co., Ltd.
  • Publication number: 20130163487
    Abstract: The present invention relates to a wireless communication system. More particularly, the present invention relates to a method and apparatus for transmitting uplink control information in the event of a plurality of cell, wherein the method comprises the following steps: receiving a PDCCH and/or a PDSCH; generating reception acknowledgement information for said PDCCH and/or PDSCH; and transmitting the reception acknowledgement information in an SR subframe via a PUCCH.
    Type: Application
    Filed: February 19, 2013
    Publication date: June 27, 2013
    Applicant: LG ELECTRONICS INC.
    Inventor: LG ELECTRONICS INC.
  • Patent number: 8472358
    Abstract: Method and apparatus in a communication unit employing a wireless TDD or half duplex FDD transmission arrangement when communicating with a data sending party, for scheduling feedback reports for data blocks in received receive (RX) sub-frames, in transmit (TX) sub-frames available for transmission. An obtaining unit in the communication unit receives allocation parameters for the connection where the number of required feedback reports is greater than the number of allowed feedback reports. A scheduling unit in the communication unit then schedules feedback reports in available TX sub-frames according to a predetermined spreading rule also known by the data sending party, dictating that the feedback reports are spread out or distributed evenly over the available TX sub-frames. In this way, the number of feedback reports in a TX sub-frame can be reduced.
    Type: Grant
    Filed: January 20, 2012
    Date of Patent: June 25, 2013
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Johan Torsner, David Astely, Stefan Parkvall, Tobias Tynderfeldt
  • Patent number: 8467736
    Abstract: The present invention relates to a method for synchronizing multiple cells, which perform cooperative multi-input multi-output operations, as well as to a method for inter-cell synchronization in a multi-cell environment, comprising the steps of: measuring a propagation delay of a cooperative base station; transmitting the measured propagation delay to a serving base station; and receiving data for cooperative multi-input multi-output operations in which a transmission location is adjusted, on the basis of the propagation delay of the cooperative base station, when the serving base station transmits the propagation delay to the cooperative base station.
    Type: Grant
    Filed: December 28, 2009
    Date of Patent: June 18, 2013
    Assignee: LG Electronics Inc.
    Inventors: Ja-Ho Koo, Yeong-Hyeon Kwon, Jae-Hoon Chung, Bin-Chul Ihm, Hyun-Soo Ko
  • Patent number: 8462673
    Abstract: A system and method for mapping a combined frequency division duplexing (FDD) Time Division Multiplexing (TDM)/Time Division Multiple Access (TDMA) downlink subframe for use with half-duplex and full-duplex terminals in a communication system. Embodiments of the downlink subframe vary Forward Error Correction (FEC) types for a given modulation scheme as well as support the implementation of a smart antennae at a base station in the communication system. Embodiments of the system are also used in a TDD communication system to support the implementation of smart antennae. A scheduling algorithm allows TDM and TDMA portions of a downlink to efficiently co-exist in the same downlink subframe and simultaneously support full and half-duplex terminals.
    Type: Grant
    Filed: March 22, 2012
    Date of Patent: June 11, 2013
    Assignee: Wi-Lan, Inc.
    Inventors: Kenneth L. Stanwood, Israel Jay Klein, George Lin, An Chen
  • Publication number: 20130142091
    Abstract: The present invention relates to method and apparatus for scheduling downlink transmission. According to an embodiment of the present invention, a method for scheduling downlink transmission in a wireless communication system is provided. The method comprises: scheduling, in a channel measurement sub-frame, user equipments in a cell according to feedback information that was most recently received from the user equipments, wherein in the channel measurement sub-frame, the user equipments calculate feedback information to be reported; and scheduling, in response to receipt of the feedback information, the user equipments based on a result of scheduling corresponding to the channel measurement sub-frame. According to an embodiment of the present invention, there is also provided a scheduling apparatus, base station device and corresponding computer program product.
    Type: Application
    Filed: December 23, 2010
    Publication date: June 6, 2013
    Applicant: NEC (CHINA) CO., LTD.
    Inventors: Gang Wang, Zhennian Sun, Ming Lei
  • Patent number: 8457092
    Abstract: A quick paging channel in a random access wireless communication system includes at least one bit in a quick paging frame identifying the presence of a paging message for an access terminal or group of access terminals. The quick paging bits identifying the presence of a paging message for a first access terminal is encoded with one or more quick paging bits corresponding to one or more additional access terminals to produce one or more forward error correction bits. The jointly encoded quick paging bits are broadcast to the access terminals by time division multiplexing the quick paging frame with additional frames of information.
    Type: Grant
    Filed: May 6, 2010
    Date of Patent: June 4, 2013
    Assignee: QUALCOMM Incorporated
    Inventors: Avneesh Agrawal, Rajat Prakash