Frequency Division Patents (Class 370/281)
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Publication number: 20130294300Abstract: Apparatus and a method of cell reselection in a wireless telecommunications device operative with a plurality of radio access networks are disclosed. The method comprises, when the device is camped on a first radio access network: ranking cells in a neighbouring list according to cell reselection criteria; considering for cell reselection a cell in the neighbouring list; when the cell in the list is a cell of a second radio access network different from the first radio access network, applying an algorithm for cell reselection from the second radio access network to the first radio access network; and when the algorithm as applied would result in reselection to the first radio access network, considering for cell reselection another cell in the list.Type: ApplicationFiled: January 31, 2012Publication date: November 7, 2013Applicant: Research In Motion LimitedInventors: Giri Narayana Reddy, Andrew Farnsworth
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Patent number: 8576755Abstract: 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: GrantFiled: January 10, 2011Date of Patent: November 5, 2013Assignee: QUALCOMM IncorporatedInventors: Dung Ngoc Doan, Wanshi Chen, Ravi Palanki, Parag Arun Agashe, Aamod Dinkar Khandekar, Juan Montojo
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Publication number: 20130286907Abstract: 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: ApplicationFiled: October 20, 2010Publication date: October 31, 2013Applicant: NOKIA CORPORATIONInventors: Na Wei, Chunyan Gao, Haiming Wang, Wei Bai, Wei Hong, Jing Han
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Patent number: 8565166Abstract: 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: GrantFiled: October 1, 2007Date of Patent: October 22, 2013Assignee: NTT DoCoMo, Inc.Inventors: Teruo Kawamura, Kenichi Higuchi, Mamoru Sawahashi
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Publication number: 20130272175Abstract: 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: ApplicationFiled: January 22, 2013Publication date: October 17, 2013Applicant: QUALCOMM IncorporatedInventors: Masoud ZARGARI, Shahram ABDOLLAHI-ALIBEIK
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Patent number: 8553592Abstract: 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: GrantFiled: April 17, 2009Date of Patent: October 8, 2013Assignee: Intel CorporationInventor: Xue Yang
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Patent number: 8553593Abstract: 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: GrantFiled: June 17, 2010Date of Patent: October 8, 2013Assignee: LG Electronics Inc.Inventors: Dong Guk Lim, Sung Ho Moon, Han Gyu Cho, Yeong Hyeon Kwon, Jin Sam Kwak
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Publication number: 20130258915Abstract: 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: ApplicationFiled: March 28, 2013Publication date: October 3, 2013Applicant: FUJITSU LIMITEDInventors: Hideyuki KANNARI, Masanori HARA
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Publication number: 20130258873Abstract: 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: ApplicationFiled: March 30, 2012Publication date: October 3, 2013Applicant: Broadcom CorporationInventors: Erik Richard Stauffer, Kamlesh Rath, Ying Xia, Bertrand Hochwald
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Patent number: 8547883Abstract: 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: GrantFiled: August 19, 2008Date of Patent: October 1, 2013Assignee: Samsung Electronics Co., Ltd.Inventors: Young-Ho Jung, Yung-Soo Kim, Myeon-Kyun Cho
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Patent number: 8547896Abstract: 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: GrantFiled: February 18, 2010Date of Patent: October 1, 2013Assignee: 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
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Patent number: 8547927Abstract: 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: GrantFiled: November 3, 2009Date of Patent: October 1, 2013Assignee: LG Electronics Inc.Inventors: Dong Youn Seo, Jung Hoon Lee, Ki Jun Kim, Joon Kui Ahn
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Patent number: 8542617Abstract: 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: GrantFiled: June 2, 2008Date of Patent: September 24, 2013Assignee: Apple Inc.Inventors: Hyung-Nam Choi, Maik Bienas, Martin Hans
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Publication number: 20130242766Abstract: 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: ApplicationFiled: June 13, 2012Publication date: September 19, 2013Applicant: QUALCOMM IncorporatedInventors: Huilin XU, Raghu Narayan Challa, Rebecca Wen-Ling Yuan, Anant Hegde
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Publication number: 20130242824Abstract: 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: ApplicationFiled: March 15, 2013Publication date: September 19, 2013Applicant: InterDigital Patent Holdings, Inc.Inventors: Moon-il Lee, Allan Y. Tsai, Pouriya Sadaghi, Fengjun Xi, Marian Rudolf, Janet A. Stern-Berkowitz
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Publication number: 20130235769Abstract: 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: ApplicationFiled: March 6, 2013Publication date: September 12, 2013Applicant: QUALCOMM INCORPORATEDInventors: Rebecca Wen-Ling Yuan, Raghu Narayan Challa
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Patent number: 8531999Abstract: 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: GrantFiled: October 20, 2008Date of Patent: September 10, 2013Assignee: LG Electronics Inc.Inventors: Jin Young Chun, Bin Chul Ihm, Jin Sam Kwak, Ki Seon Ryu
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Publication number: 20130229958Abstract: 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: ApplicationFiled: November 28, 2011Publication date: September 5, 2013Applicant: NTT DOCOMO, INC.Inventors: Yuta Sagae, Hiroyuki Ishii, Naoto Ookubo, Anil Umesh
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Publication number: 20130229952Abstract: 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: ApplicationFiled: September 30, 2011Publication date: September 5, 2013Applicant: NOKIA CORPORATIONInventors: Henri Markus Koskinen, Jussi Kustaa Ojala, Antti-Veikko Piipponen, Tommi Juhani Zetterman
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Publication number: 20130229953Abstract: 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: ApplicationFiled: August 10, 2012Publication date: September 5, 2013Applicant: Samsung Electronics Co., Ltd.Inventors: Young-Han Nam, Boon Loong Ng, Jianzhong Zhang
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Publication number: 20130229957Abstract: 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: ApplicationFiled: March 1, 2012Publication date: September 5, 2013Applicant: FutureWei Technologies, Inc.Inventors: Philippe Sartori, Deping Liu
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Patent number: 8526294Abstract: 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: GrantFiled: November 29, 2010Date of Patent: September 3, 2013Assignee: ST-Ericsson SAInventor: Abdelaziz Goulahsen
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Patent number: 8526412Abstract: 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: GrantFiled: October 18, 2004Date of Patent: September 3, 2013Assignee: QUALCOMM IncorporatedInventors: Rajiv Vijayan, Gordon Kent Walker, Raghuraman Krishnamoorthi, Murali R. Chari
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Publication number: 20130223301Abstract: 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: ApplicationFiled: November 11, 2011Publication date: August 29, 2013Applicant: LG ELECTRONICS INC.Inventors: Hyunwoo Lee, Jaehoon Chung, Seunghee Han
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Publication number: 20130223298Abstract: 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: ApplicationFiled: March 23, 2012Publication date: August 29, 2013Applicant: LG ELECTRONICS INC.Inventors: Joon Kui Ahn, Suck Chel Yang, Min Gyu Kim, Dong Youn Seo
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Patent number: 8520561Abstract: 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: GrantFiled: February 3, 2010Date of Patent: August 27, 2013Assignee: ATC Technologies, LLCInventors: Serge Nguyen, Santanu Dutta
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Patent number: 8520494Abstract: 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: GrantFiled: August 13, 2009Date of Patent: August 27, 2013Assignee: 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
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Publication number: 20130215806Abstract: 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 sigType: ApplicationFiled: April 3, 2013Publication date: August 22, 2013Applicant: Sony CorporationInventor: Sony Corporation
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Publication number: 20130215805Abstract: 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: ApplicationFiled: February 7, 2013Publication date: August 22, 2013Applicant: The Board of Trustees of the Leland Stanford Junior UniversityInventor: The Board of Trustees of the Leland Stanford Junior University
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Publication number: 20130215807Abstract: 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: ApplicationFiled: October 26, 2011Publication date: August 22, 2013Applicant: LG ELECTRONICS INC.Inventors: Suckchel Yang, Joonkui Ahn, Dongyoun Seo, Mingyu Kim
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Patent number: 8509158Abstract: 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: GrantFiled: September 18, 2006Date of Patent: August 13, 2013Assignee: The DIRECTV Group, Inc.Inventor: John L. Norin
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Patent number: 8509124Abstract: 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: GrantFiled: April 1, 2010Date of Patent: August 13, 2013Assignee: LG Electronics Inc.Inventors: Dong Guk Lim, Sung Ho Moon, Han Gyu Cho, Yeong Hyeon Kwon, Jin Sam Kwak
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Patent number: 8509176Abstract: 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: GrantFiled: April 12, 2010Date of Patent: August 13, 2013Assignee: LG Electronics Inc.Inventors: Wook Bong Lee, Han Gyu Cho, Sung Ho Moon, Jin Sam Kwak, Bin Chul Ihm, Min Seok Noh
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Pilot arrangement method in mobile radio communication system and transmitter/receiver adopting same
Patent number: 8503284Abstract: 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: GrantFiled: May 13, 2010Date of Patent: August 6, 2013Assignee: Fujitsu LimitedInventors: Kenji Suda, Hiroyuki Seki -
Publication number: 20130188537Abstract: 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: ApplicationFiled: March 10, 2011Publication date: July 25, 2013Applicant: CASSIDIAN SASInventors: Gerard Marque-Pucheu, Christophe Gruet, Vincent Seguy
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Publication number: 20130188536Abstract: 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: ApplicationFiled: February 1, 2012Publication date: July 25, 2013Inventors: Juho Mikko Oskari Pirskanen, Sami-Jukka Hakola, Juha P. Karjalainen, Timo K. Koskela, Samuli Turtinen
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Patent number: 8493926Abstract: 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: GrantFiled: September 30, 2005Date of Patent: July 23, 2013Assignee: Sony CorporationInventors: Martin Warwick Beale, Alan E. Jones
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Patent number: 8494006Abstract: 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: GrantFiled: January 14, 2011Date of Patent: July 23, 2013Assignee: LG Electronics Inc.Inventors: Dae Won Lee, Hak Seong Kim, Byoung Hoon Kim, Ki Jun Kim, Eun Sun Kim
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Publication number: 20130176918Abstract: 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: ApplicationFiled: January 7, 2013Publication date: July 11, 2013Applicant: Samsung Electronics Co., Ltd.Inventor: Samsung Electronics Co., Ltd.
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Patent number: 8483742Abstract: 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: GrantFiled: July 26, 2010Date of Patent: July 9, 2013Assignee: LG Electronics Inc.Inventors: Dong Cheol Kim, Wook Bong Lee, Han Gyu Cho, Jin Sam Kwak, Bin Chul Ihm
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Publication number: 20130170407Abstract: 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: ApplicationFiled: June 30, 2011Publication date: July 4, 2013Applicant: ZTE CORPORATIONInventors: Chunli Liang, Bo Dai, Weiwei Yang, Peng Zhu
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Publication number: 20130170408Abstract: 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: ApplicationFiled: May 31, 2011Publication date: July 4, 2013Applicant: ZTE CORPORATIONInventors: Haiyan Zhang, Yazhu Ke
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Publication number: 20130163484Abstract: 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: ApplicationFiled: September 20, 2010Publication date: June 27, 2013Applicant: LG ELECTRONICS INC.Inventors: Binchul Ihm, Wookbong Lee, Moonil Lee, Sunam Kim, Hyunsoo Ko, Sungho Park, Jaho Koo, Jinyoung Chun, Seunghyun Kang
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Publication number: 20130163486Abstract: 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: ApplicationFiled: February 18, 2013Publication date: June 27, 2013Applicant: MOTOROLA MOBILITY LLCInventor: MOTOROLA MOBILITY LLC
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Publication number: 20130163485Abstract: 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: ApplicationFiled: February 21, 2013Publication date: June 27, 2013Applicant: Huawei Technologies Co., Ltd.Inventor: Huawei Technologies Co., Ltd.
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Publication number: 20130163487Abstract: 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: ApplicationFiled: February 19, 2013Publication date: June 27, 2013Applicant: LG ELECTRONICS INC.Inventor: LG ELECTRONICS INC.
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Patent number: 8472358Abstract: 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: GrantFiled: January 20, 2012Date of Patent: June 25, 2013Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Johan Torsner, David Astely, Stefan Parkvall, Tobias Tynderfeldt
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Patent number: 8467736Abstract: 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: GrantFiled: December 28, 2009Date of Patent: June 18, 2013Assignee: LG Electronics Inc.Inventors: Ja-Ho Koo, Yeong-Hyeon Kwon, Jae-Hoon Chung, Bin-Chul Ihm, Hyun-Soo Ko
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Patent number: 8462673Abstract: 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: GrantFiled: March 22, 2012Date of Patent: June 11, 2013Assignee: Wi-Lan, Inc.Inventors: Kenneth L. Stanwood, Israel Jay Klein, George Lin, An Chen
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Publication number: 20130142091Abstract: 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: ApplicationFiled: December 23, 2010Publication date: June 6, 2013Applicant: NEC (CHINA) CO., LTD.Inventors: Gang Wang, Zhennian Sun, Ming Lei