Frequency Division Patents (Class 370/281)
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Patent number: 8457092Abstract: 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: GrantFiled: May 6, 2010Date of Patent: June 4, 2013Assignee: QUALCOMM IncorporatedInventors: Avneesh Agrawal, Rajat Prakash
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Patent number: 8457023Abstract: The present invention relates to a method for selecting operating frequency channels having frequency parameters, such as a frequency interval or at least one carrier frequency, for a network communicating data over a shared medium. The network is configured to communicate within a frequency range, and the frequency range is divided into a plurality of frequency channels f1-fn, each frequency channel defines a predetermined frequency parameter. The data to be communicated over the network is divided into sequences FS, each sequence having a plurality of positions SP1-SPm. The method further comprises regularly scanning the frequency range to identify interfering frequencies generated by interfering networks operating within said shared medium, and assigning a frequency channel fk to each position SPi within the sequences FS based on the identified interfering frequencies, whereby the use of interfering frequencies is limited.Type: GrantFiled: March 30, 2010Date of Patent: June 4, 2013Assignee: LumenRadio ABInventors: Niclas Norlén, Per Hulthén
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Publication number: 20130136039Abstract: An all outdoor communication unit (ODU) microwave backhaul system and a split ODU microwave backhaul system, each configured to support a dual channel wireless link, are provided. Each microwave backhaul system includes an ODU having a processor configured to improve a quality of data (having a first and a second communication channel) by performing mathematical manipulation techniques on the data, a conversion, block configured to perform digital-to-analog and analog-to-digital conversions of the data, and a duplexer configured to facilitate substantially simultaneous communication of the first and second communication channels over the dual channel wireless link by optimizing a frequency separation between the first and second communication channels.Type: ApplicationFiled: September 25, 2012Publication date: May 30, 2013Inventors: Kobi Sturkovich, Igal Kushnir
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Patent number: 8451790Abstract: The present invention discloses a method and a system for transmitting downlink control information, wherein when a base station is not configured with a carrier indicator field, the base station transmits a physical downlink control channel bearing the corresponding downlink control information on each downlink component carrier in a user equipment's physical downlink shared channel (PDSCH) carrier set, and the user equipment detects the corresponding downlink control information on each downlink component carrier in the configured PDSCH carrier set. When a base station is configured with a carrier indicator field, the base station transmits the physical downlink control channel bearing the corresponding downlink control information on each downlink component carrier in the configured physical downlink control channel (PDCCH) carrier set, and the user equipment detects the corresponding downlink control information on each downlink component carrier in the PDCCH carrier set.Type: GrantFiled: June 30, 2010Date of Patent: May 28, 2013Assignee: ZTE CorporationInventors: Bo Dai, Weijun Li, Guanghui Yu, Zhisong Zuo
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Publication number: 20130128782Abstract: The current invention provides simplifications to the user equipment (UE) radio front end module for the cellular handset or dongle through modification of the existing 3GPP specifications for LTE and WCDMA/HSPA+ in order to support half duplex (HD) operation. The option to support HD operation is provided without mandating upgrades to all existing base stations that have already been deployed. The instant invention further prevents HD UEs from attaching to any base stations which do not support HD operations. The instant invention further provides inter-frequency cell search periods for enabling HD UEs to communicate with any base stations/cells supporting the HD operations. The instant invention further enables the HSPA+ system to support the HD-FDD mode.Type: ApplicationFiled: November 6, 2012Publication date: May 23, 2013Applicants: MStar Semiconductor, Inc., MStar Semiconductor, Inc., MStar Software R&D (Shenzhen) Ltd.Inventors: Francesc Boixadera, Cyril Valadon
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Publication number: 20130128783Abstract: The invention relates to a wireless communication terminal able to transmit and/or receive video, audio or data signals in a first and a second frequency band comprising a first MIMO circuit of N paths (N?1) operating in the first frequency band and a second MIMO circuit of M paths (M?1) operating in the second frequency band, the first and second MIMO circuits each being coupled to front-end modules comprising respectively N and M power amplifiers, the front-end modules being connected to an antenna system.Type: ApplicationFiled: November 18, 2012Publication date: May 23, 2013Applicant: Thomson LicensingInventor: Thomson Licensing
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METHODS FOR PERFORMING AN EFFICIENT NETWORK SEARCH AND COMMUNICATIONS APPARATUSES UTILIZING THE SAME
Publication number: 20130121218Abstract: A communications apparatus includes at least a first processor logic unit obtaining a support band list, a second processor logic unit generating a frequency search list for a first operating band and a frequency search list for a second operating band listed in the support band list, and a third processor logic unit performing power scan and cell search according to the frequency search lists. The frequency search list includes information regarding operating frequencies located in the corresponding operating band to be searched. The second operating band includes one or more operating frequencies overlapped with that of the first operating band, and the one or more operating frequencies of the second operating band overlapped with that of the first operating band is/are listed only in one of the frequency search list for the first operating band and the frequency search list for the second operating band.Type: ApplicationFiled: November 7, 2012Publication date: May 16, 2013Applicant: MEDIATEK INC.Inventor: MediaTek Inc. -
Publication number: 20130114479Abstract: Provided is a method for transmitting a HARQ (hybrid automatic repeat request) ACK (acknowledgment)/NACK (not-acknowledgement) response from user equipment in which two serving cells are set. The method comprises the steps of: receiving a first transport block through a first serving cell which is set in a first transmission mode, in which up to two transport blocks are supported; determining an HARQ ACK/NACK response which includes a first response to the first transport block; and transmitting the HARQ ACK/NACK response, wherein the first response is the same as a response used when two transport blocks have been received through the first serving cell.Type: ApplicationFiled: July 15, 2011Publication date: May 9, 2013Applicant: LG ELECTRONICS INC.Inventors: Dong Youn Seo, Min Gyu Kim, Joon Kui Ahn, Suck Chel Yang
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Patent number: 8432839Abstract: 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: GrantFiled: September 10, 2010Date of Patent: April 30, 2013Assignee: Sony CorporationInventor: Masahiro Uno
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Publication number: 20130100866Abstract: 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 PPCCH 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: September 19, 2011Publication date: April 25, 2013Applicant: LG ELECTRONICS INC.Inventors: Suckchel Yang, Mingyu Kim, Joonkui Ahn, Dongyoun Seo
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Publication number: 20130100864Abstract: A method for performing device-to-multidevice communication with interference suppression is provided. The method may include selecting at least one receiving user equipment for D2MD transmission, and receiving requested data rates from the selected at least one receiving user equipment. The method may further include acquiring CSI matrices and identifying interference constraints to the C-UEs sharing the same frequency band as the at least one receiving user equipment. The method then includes determining precoding matrices using the acquired CSI matrices and the identified interference constraints to the C-UEs, and performing D2MD transmission to the at least one receiving user equipment using the determined precoding matrices.Type: ApplicationFiled: October 24, 2011Publication date: April 25, 2013Applicant: NOKIA CORPORATIONInventors: Amitav MUKHERJEE, Ari HOTTINEN
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Publication number: 20130100865Abstract: A method and system for aggregating component carriers across frequency bands are provided. The method includes aggregating a DL carrier of a first cell associated with a first frequency band with an UpLink (UL) carrier of a second cell associated with a second band, wherein the first cell includes an aggregated downlink carrier and an unused uplink carrier; communicating cross-linking information for carrier aggregation associated with the DL carrier of the first frequency band with the UL carrier of the second frequency band to a plurality of user equipments; and performing data transfer with each of the plurality of user equipments using the aggregated DL carrier of the first frequency band and the UL carrier of the second frequency band.Type: ApplicationFiled: June 21, 2011Publication date: April 25, 2013Inventors: Sudhir Kumar Baghel, Gert-Jan Van Lieshout, Nitin Jain
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Patent number: 8427934Abstract: A technique for generating a single carrier frequency division multiple access (SC-FDMA) signal is described, in which from a set of M input symbols a set of N output symbols (M<N) is generated. A method implementation of this technique comprises receiving a set of M input symbols in a time domain representation, subjecting the set of M input symbols to an interpolation operation in the time domain to obtain L interpolated samples (L?N), mapping the interpolated symbols, or symbols derived from the interpolated symbols, to N orthogonal sub-carriers, and outputting N output symbols in a time domain representation.Type: GrantFiled: February 10, 2009Date of Patent: April 23, 2013Assignee: Telefonaktiebolaget L M Ericsson (Publ)Inventors: Dietmar Lipka, Steffen Reinhardt, Stefan Mueller-Weinfurtner
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Publication number: 20130094411Abstract: A method of allocating resource elements in an orthogonal frequency division multiplexing (OFDM) system for transmission of a channel state information reference signal (CSI-RS) is disclosed. The method includes converting resource elements to a two-dimensional frequency-time domain. The converted resource elements can then be partitioned to units of a physical resource block (PRB), which can be one subframe, for example. It can be determined whether a portion of a PRB is being used by another signal; and if the portion of the PRB is not being used, it can be allocated for transmission of the CSI-RS. The CSI-RS can be transmitted at resource element locations determined by the resource elements available to the CSI-RS in a regular or a frequency-division duplexing (FDD) downlink subframe, for example. The CSI-RS can be transmitted in a downlink subframe configured as a Multi-Media Broadcast over a Single Frequency Network (MBSFN) or a non-MBSFN subframe.Type: ApplicationFiled: February 17, 2011Publication date: April 18, 2013Applicant: ZTE CORPORATIONInventor: Wenfeng Zhang
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Patent number: 8422411Abstract: A wireless communication system frame structure configurable to serve to half-duplex user terminals or a mixture of half-duplex and full-duplex user terminals based on a grouping of the user terminals according to one or more criteria. In one embodiment, user terminals are switched from one group to another. A user terminal signaling mechanism is also provided.Type: GrantFiled: October 7, 2007Date of Patent: April 16, 2013Assignee: Motorola Mobility LLCInventors: Pallav Sudarshan, Kenneth A. Stewart, Xiangyang Zhuang
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Patent number: 8422572Abstract: In a method and/or an OFDM device for SC-FDMA data transmission, a sequence of input data is transformed by means of a discrete transformation as transformed data signals of coded and modulated data signals on first frequency channels into a first frequency space over a first number of frequencies. The transformed data signals are mapped on second frequency channels in a second frequency space with a larger second number of frequencies. The transformed data signals on the second frequency channels are inverse-transformed using an inverse transformation. Data inversely transformed in such a way are provided for transmission. The transformed data signals are mapped into a frequency range of the second frequency channels in such a way that a constant component of the transformed data signals is mapped centrally within the frequency range.Type: GrantFiled: March 22, 2007Date of Patent: April 16, 2013Assignees: Nokia Siemens Networks GmbH & Co. KG, Fraunhofer Gesellschaft zur Foerderung der Angewandten Forschung E.V.Inventors: Andreas Forck, Holger Gaebler, Thomas Haustein, Thomas Hindelang, Volker Jungnickel, Wolfgang Zirwas
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Patent number: 8423358Abstract: A method for performing packet loss or Frame Erasure Concealment (FEC) for a speech coder receives encoded frames of compressed speech information transmitted from an encoder. The method determines whether an encoded frame has been lost, corrupted in transmission, or erased, synthesizes properly received frames, and decides on an overlap-add window to use in combining a portion of the synthesized speech signal with a subsequent speech signal resulting from a received and decoded packet, where the size of the overlap-add window is based on the unavailability of packets. If it is determined that an encoded frame has been lost, corrupted in transmission, or erased, the method performed an overlap-add operation on the portion of the synthesized speech signal and the subsequent speech signal, using the decided-on overlap-add window.Type: GrantFiled: May 21, 2012Date of Patent: April 16, 2013Assignee: AT&T Intellectual Property II, L.P.Inventor: David A. Kapilow
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Publication number: 20130083710Abstract: Certain aspects of the present disclosure provide techniques for enabling half-duplex (HD) operations between one or more user equipments (UEs) and one or more base stations.Type: ApplicationFiled: September 28, 2012Publication date: April 4, 2013Inventors: Wanshi Chen, Hao Xu, Juan Montojo, Peter Gaal, Jelena M. Damnjanovic
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Publication number: 20130077543Abstract: The present description relates to a method for performing a HARQ process operation in a wireless communication system and to an apparatus using the method. A base station device which performs a HARQ process operation comprises a transmitter which transmits to a relay an uplink (UL) grant in a downlink backhaul subframe n which is a subframe having an index n among the allocated downlink backhaul subframes, and transmits, if downlink data sent from the relay in accordance with the uplink grant is not successfully received, a non-acknowledgement (NACK) signal in a downlink backhaul subframe n+N which is a downlink backhaul subframe that comes after N which is a predetermined number of HARQ processes counted from the downlink backhaul subframe n among the allocated downlink backhaul subframes.Type: ApplicationFiled: June 9, 2011Publication date: March 28, 2013Applicant: LG ELECTRONICS INC.Inventors: Hakseong Kim, Hanbyul Seo, Byounghoon Kim, Kijun Kim
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Publication number: 20130077542Abstract: In accordance with an embodiment, a method of operating a wireless relay device includes establishing a first connection to a base station using a first set of frequency bands, establishing a second connection to a user device using the first set of frequency bands, and establishing a third connection to the base station using a second set of frequency bands.Type: ApplicationFiled: September 21, 2012Publication date: March 28, 2013Applicant: FUTUREWEI TECHNOLOGIES, INC.Inventors: Yunsong Yang, Zhongfeng Li, Philippe Sartori
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Patent number: 8406726Abstract: The present invention relates to a method and apparatus for requesting a base station of emergency call connection within the shortest time regardless of location or channel status of a mobile station in a mobile communication system. When the mobile station requests an uplink to connect emergency call, the base station establishes a communication path of mobile station-relay station-base station if signal quality of the mobile station is not better than signal quality transmitted through the relay station, whereby ranging or transmission of emergency data is prevented from being repeated under poor channel status, so as to enable a prompt emergency rescue service.Type: GrantFiled: March 6, 2008Date of Patent: March 26, 2013Assignee: LG Electronics Inc.Inventors: Ae Ran Youn, Yong Ho Kim, Ki Seon Ryu
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Publication number: 20130070653Abstract: In a wireless communication device with multiple radio access technologies (RATs), frame timing for one RAT may be aligned with a frame timing of another RAT so as to reduce a number of communication frames of the different RATs that overlap in time with each other. The aligning reduces the number of communication frames that are subject to cancellation due to interference. Alignment may reduce a number of transmit frames of one RAT that overlap with multiple receive frames of another RAT. Alignment may reduce a number of receive frames of one RAT that overlap with multiple transmit frames of another RAT.Type: ApplicationFiled: March 19, 2012Publication date: March 21, 2013Applicant: QUALCOMM INCORPORATEDInventors: Brian Clarke Banister, Jibing Wang, Joel Benjamin Linsky
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Patent number: 8400952Abstract: A method of transmitting a signal using a prescribed frame structure in a wireless communication system is disclosed. A mobile station is able to transmit or receive a signal using a frame structure with a CP length corresponding to ¼ of a useful symbol. Moreover, the mobile station is able to transmit or receive a signal using a frame structure with a CP length corresponding to ¼ of a useful symbol, which is designed to mutually coexist without causing collision or interference with another frame structure with a different CP length. In this case, a channel bandwidth of the prescribed frame structure is 7 MHz.Type: GrantFiled: April 2, 2010Date of Patent: March 19, 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: 8400951Abstract: 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: GrantFiled: March 24, 2009Date of Patent: March 19, 2013Assignee: Motorola Mobility LLCInventors: Vijay Nangia, Robert T Love, Ravikiran Nory
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Publication number: 20130064146Abstract: Disclosed is a method for directly transmitting and receiving data between terminals in a frequency division duplexing (FDD)-type and time division duplexing (TDD)-type mobile communication system. For FDD-type systems, provided are methods for performing direct data transmission and reception between terminals on the basis of a downlink subframe time interval and methods for performing direct data transmission and reception between terminals on the basis of an uplink subframe time interval. For TDD-type systems, provided are methods for performing direct data transmission and reception between terminals in a downlink subframe and methods for performing direct data transmission and reception between terminals in an uplink subframe. Additionally, for each method, provided are systems for performing only reception or transmission in one subframe and systems for performing both reception and transmission in one subframe.Type: ApplicationFiled: May 17, 2011Publication date: March 14, 2013Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Jae Young Ahn, Joon Woo Shin
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Publication number: 20130064145Abstract: In setting a radio frequency gain for wireless communications during an initial synchronization phase, at least an upper threshold value (308,310) for a radio frequency gain (304) is set. The radio frequency gain (304) is adjusted during the initial synchronization phase where user equipment is first trying to receive synchronization signals in a transmission from a base station. The radio frequency gain (304) is limited by the threshold value (308,310). This has particular application to Time Division Duplex (TDD) and Frequency Division Duplex (FDD) networks.Type: ApplicationFiled: November 8, 2012Publication date: March 14, 2013Applicant: RENESAS MOBILE CORPORATIONInventor: RENESAS MOBILE CORPORATION
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Publication number: 20130064148Abstract: The present invention relates to a single frequency synthesizer based FDD transceiver. A single frequency synthesizer generates and provides a carrier frequency so that frequency up-conversion and frequency down-conversion can be performed at the time of transmission and reception. Accordingly, the area, power consumption, and design complexity of the entire system can be reduced, and the performance of the system can be improved.Type: ApplicationFiled: September 10, 2012Publication date: March 14, 2013Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Hyun Ho BOO, Seon-Ho Han, Jang Hong Choi, Ik Soo Eo, Hyun Kyu Yu
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Publication number: 20130051290Abstract: To reduce the influence of a spurious in a high-frequency signal processing device and a wireless communication system each provided with a digital type PLL circuit. In a digital type PLL circuit including a digital phase comparator unit, a digital low-pass filter, a digital control oscillator unit, and a multi-module driver unit (frequency divider unit), the clock frequency of a clock signal in the digital phase comparator unit is configured selectably among a plurality of options. The clock frequency is selected among frequencies which are integer multiples of a reference frequency, in accordance with which frequency band of a standard is to be set for an oscillation output signal of the digital control oscillator unit.Type: ApplicationFiled: July 27, 2012Publication date: February 28, 2013Inventors: Ryo ENDO, Keisuke Ueda, Toshiya Uozumi
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Publication number: 20130051291Abstract: The high quality PCS communications are enabled in environments where adjacent PCS service bands operate with out-of-band harmonics that would otherwise interfere with the system's operation. The highly bandwidth-efficient communications method combines a form of time division duplex (TDD), frequency division duplex (FDD), time division multiple access (TDMA), orthogonal frequency division multiplexing (OFDM), spatial diversity, and polarization diversity in various unique combinations. The method provides excellent fade resistance. The method enables changing a user's available bandwidth on demand by assigning additional TDMA slots during the user's session.Type: ApplicationFiled: October 30, 2012Publication date: February 28, 2013Applicant: AT&T MOBILITY II LLCInventor: AT&T MOBILITY II LLC
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Patent number: 8385255Abstract: Using as a reference a known signal assigned to one of a plurality of streams that constitute a packet signal, a control unit applies a cyclic timing shift to known signals assigned to the other streams so as to produce packet signals which are to be transmitted finally. While varying the amount of timing shift, the control unit produces a plurality of packet signals and appends an identification number, with which to uniquely identify each of the plurality of produced packet signals, to each of the packet signals. A baseband processing unit and the like transmit, as a transmission rate inquiry signal, a packet signal constituted by a plurality of streams where the amounts of timing shift are made to differ, and receive a response signal to which the same identification number is appended for the inquiry signal.Type: GrantFiled: September 19, 2006Date of Patent: February 26, 2013Assignee: Hera Wireless S.A.Inventors: Yasuhiro Tanaka, Seigo Nakao
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Patent number: 8385236Abstract: A user apparatus for use in a mobile communications system is disclosed. The user apparatus includes a unit which determines, using acknowledgement information received from a communications counterpart, whether retransmission is required for a transmitted signal; and a unit which transmits, to the communications counterpart, a signal required to be retransmitted according to a round-trip delay (RTD) which is set for the user apparatus for retransmission control, wherein, the RTD of the user apparatus is arranged to be changed, when the user apparatus enters a region which uses an RTD shorter than the RTD set for the user apparatus to an integer multiple of the shorter RTD.Type: GrantFiled: October 31, 2008Date of Patent: February 26, 2013Assignee: NTT DoCoMo, Inc.Inventors: Mamoru Sawahashi, Kenichi Higuchi, Nobuhiko Miki, Motohiro Tanno
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Base station apparatus, mobile station, radio communication system, and communication control method
Patent number: 8385277Abstract: In a radio communication system including a mobile station and a base station apparatus for communicating with the mobile station according to a SC-FDMA scheme in uplink, the mobile station includes a transmitting unit configured to transmit at least one of a first signal and a second signal; and a Sounding RS transmitting unit configured to determine a transmission band for a Sounding Reference Signal (Sounding RS) based on mapping information of at least one of the first signal and the second signal.Type: GrantFiled: February 12, 2008Date of Patent: February 26, 2013Assignee: NTT DoCoMo, Inc.Inventors: Daisuke Nishikawa, Hiroyuki Ishii, Teruo Kawamura, Kenichi Higuchi -
Publication number: 20130044654Abstract: The described aspects include methods and apparatus for aggregating carriers over a backhaul link between a relay and an evolved Node B (eNB). A first set of subframes of at least a first carrier of a plurality of carriers configured for communicating with an eNB over a backhaul link can be determined. A second set of subframes of at least a second carrier of the plurality of carriers configured for backhaul link communications is also determined, wherein the second set of subframes are different from the first set of subframes. Data received over a plurality of access link carriers can then be communicated to the eNB over the first carrier and the second carrier based at least on the first set of subframes and the second set of subframes.Type: ApplicationFiled: August 9, 2012Publication date: February 21, 2013Applicant: QUALCOMM INCORPORATEDInventors: Wanshi Chen, Dexu Lin, Jelena M. Damnjanovic, Juan Montojo
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Publication number: 20130039234Abstract: The disclosure provides a downlink transmission method and an eNodeB in a multiple input multiple output system. The method includes: obtaining channel quality indication of a User Equipment (UE) to generate a channel condition indication value; obtaining channel rank indication of the UE to generate a channel correlation indication value; obtaining uplink channel impulse response estimation data of the UE to generate a channel variation state indication value; selecting a downlink transmission mode according to the channel condition indication value, the channel correlation indication value and the channel variation state indication value; transmitting data to the UE in the selected downlink transmission mode. Because of extracting information from a current channel as a basis of a subsequent selection of the downlink mode, the disclosure can greatly improve a resource utilization ratio of a system and realize a better wireless transmission effect.Type: ApplicationFiled: October 15, 2010Publication date: February 14, 2013Applicant: ZTE CORPORATIONInventors: Bin Li, Zhaohua Zeng
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Publication number: 20130034030Abstract: A method and apparatus of communicating by a relay station a wireless communication system including a relay station is provided. The method include communicating with at least one of a base station and a user equipment through a frequency division duplex (FDD) uplink (UL) frame configured by the base station, the FDD UL frame including a UL relay zone including a plurality of UL subframes and a UL access zone including a plurality of UL subframes. The UL relay zone is a sector used for the relay station to transmit a signal to the base station, and the UL access zone is a sector used for the relay station to receive a signal from the user equipment. The UL relay zone is located before the UL access zone within the FDD UL frame.Type: ApplicationFiled: April 21, 2011Publication date: February 7, 2013Applicant: LG ELECTRONICS INC.Inventors: Jin Young Chun, Jin Sam Kwak, Jin Soo Choi, Bin Chul Ihm, Wook Bong Lee
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Publication number: 20130028122Abstract: Methods and systems are provided for use with wireless networks having one or more cell in which each cell includes a base station (BS), at least one relay station (RS) and at least one mobile station (MS). The at least one relay station can be used as an intermediate station for providing communication between the BS and MS. Methods are provided for an RS to initially access the network, access of the RS by MSs initially accessing the network, methods of allocating OFDM resources for communicating between the BS, RS and/or MS for example dividing transmission resources into uplink and downlink transmissions, and methods of inserting pilot symbols into transmission resources used by the RS. In some embodiments on the invention, the methods are consistent and/or can be used in conjunction with existing standards such as 802.16e.Type: ApplicationFiled: September 14, 2012Publication date: January 31, 2013Applicant: APPLE INC.Inventors: JIANGLEI MA, HANG ZHANG, PEIYING ZHU, MO-HAN FONG, WEN TONG, MING JIA
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Patent number: 8363575Abstract: A method and system for using frequency resources in a communication system are provided. In the method and system, a total frequency band is divided into at least two frequency subbands and there is a guard interval between frequency subbands. A first frequency subband includes a TDD UL frequency subband and a TDD DL frequency subband. A second frequency subband includes an FDD UL frequency subband. A BS sets a frequency band between the TDD UL frequency subband and an FDD UL frequency subband as an additional UL frequency subband, and receives a signal from an MS in the additional UL frequency subband.Type: GrantFiled: August 29, 2008Date of Patent: January 29, 2013Assignee: Samsung Electronics Co., Ltd.Inventors: Young-Ho Jung, Jong-Hyung Kwun, Yung-Soo Kim, Young-Sil Choi
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Publication number: 20130021938Abstract: A radio base station 1 used in an FDD radio communication system in which an uplink frequency band is different from a downlink frequency band, comprises: an antenna 110; a duplexer 130 configured to extract a signal component of the uplink frequency band from a radio signal received by the antenna; a frequency converter 120 provided on a signal path between the antenna 110 and the duplexer 130 and is configured to convert a signal component of the downlink frequency band contained in the radio signal received by the antenna 110 to a signal component of the uplink frequency band; and a measurement unit 210 configured to perform a measurement on the signal component of the uplink frequency band extracted by the duplexer.Type: ApplicationFiled: March 24, 2011Publication date: January 24, 2013Applicant: KYOCERA CORPORATIONInventor: Takanori Miura
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Publication number: 20130010656Abstract: In a wireless communication system, a user equipment (UE) may be capable of communication on multiple radio access networks. A UE may be in simultaneous communication with one radio access network, such as TD-SCDMA for circuit-switched voice calls and with another radio access network, such as TDD-LTE for packet-switched data communications. When the TDD-LTE network is idle, the UE may evaluate signal strength of the respective network for potential cell reselection. The UE may measure only a serving TD-SCDMA cell for purposes of switching packet-switched service to the TD-SCDMA network, thereby avoiding a situation where the UE attempts to connect to a different TD-SCDMA cell for purposes of packet-switched communications than the cell presently affiliated with the UE for circuit-switched communications.Type: ApplicationFiled: July 7, 2011Publication date: January 10, 2013Applicant: QUALCOMM INCORPORATEDInventors: Tom Chin, Guangming Shi, Kuo-Chun Lee
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Patent number: 8351367Abstract: A user device on a wireless network includes a receiver, a noise detector and a noise determiner. The receiver receives downlink data communications from a base station that indicates an allocation of time/frequency resource blocks at least to user devices that are communicating with the base station. The noise detector measures noise in a time/frequency resource block, comprising plural time/frequency bins, that is not allocated to one of the user devices. The noise determiner determines a level of interfering noise based on noise in the resource block that is not allocated to one of the user devices.Type: GrantFiled: March 30, 2009Date of Patent: January 8, 2013Assignee: Marvell World Trade Ltd.Inventors: Daniel Yellin, Adoram Erell, Ronen Mayrench, Ezer Melzer
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Patent number: 8351939Abstract: A wireless communication device comprises a processing system and a wireless communication transceiver. The processing system is configured to store in a memory system data that associates a geographic identifier, a pseudo network signal of a first wireless communication network, and a wireless communication channel of a second wireless communication network. The wireless communication transceiver is configured to wirelessly exchange first wireless communications with the first wireless communication network. The processing system is configured to, in response to the wireless communication device entering a geographic region associated with the geographic identifier, process the geographic identifier to identify the pseudo network signal of the first wireless communication network and the wireless communication channel of the second wireless communication network.Type: GrantFiled: June 7, 2011Date of Patent: January 8, 2013Assignee: Sprint Communications Company L.P.Inventors: Jasinder Pal Singh, Jason Peter Sigg, Ashish Bhan, Maulik K. Shah
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Publication number: 20130003618Abstract: A method of using resource blocks in a communication system with a plurality of Base Stations (BSs), including assigning resource blocks to a first BS, the first BS communicating to a second BS a message comprising information about at least one resource block assigned to the first BS and not planned to be used by the first BS, and the second BS receiving the message. Optionally, the second BS using the at least one resource block. Related apparatus and methods are also described.Type: ApplicationFiled: September 10, 2012Publication date: January 3, 2013Applicant: Alvarion Ltd.Inventor: Leonid Shousterman
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Patent number: 8345582Abstract: A base station apparatus used for a FDD mobile communications system which uses at least a predetermined frequency bandwidth is disclosed. The base station apparatus includes a control unit which provides an instruction signal which at least indicates a frequency band used in wireless communications; and a unit which wirelessly communicates with a user apparatus according to the instruction signal, wherein, if the base station apparatus belongs to a predetermined border area between mobile communications systems, an instruction signal which indicates that use of one part of the predetermined frequency band is permitted, but use of another part is prohibited is provided by the control unit, and, if the base station apparatus belongs to a predetermined non-border area, an instruction signal which indicates that use of one part and use of the other part are permitted.Type: GrantFiled: January 15, 2009Date of Patent: January 1, 2013Assignee: NTT DoCoMo, Inc.Inventors: Yuta Sagae, Hitoshi Yoshino
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Publication number: 20120327823Abstract: An apparatus and method for transmitting/receiving control information in a broadband wireless communication system using Half Frequency Division Duplex (H-FDD) are provided. An operation of a Mobile Station (MS) includes, in the case of a frame at which control information is not transmitted, performing uplink communication at a front end of the frame and, in the case of a frame at which the control information is transmitted, performing downlink communication at a front end of the frame.Type: ApplicationFiled: September 7, 2012Publication date: December 27, 2012Applicant: SAMSUNG ELECTRONICS CO. LTD.Inventors: Jun-Sung LIM, Jae-Weon CHO, Ho-Kyu CHOI
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Publication number: 20120327820Abstract: The invention teaches a solution for a Time Division Duplex (TDD) and Frequency Division Duplex (FDD) networks. In the solution, a threshold value is set for a radio frequency gain. The value of the radio frequency gain is limited to the threshold value during an initial synchronization phase where user equipment is first trying to receive synchronization signals in a transmission from a base station.Type: ApplicationFiled: June 22, 2011Publication date: December 27, 2012Inventor: Arne Birger Husth
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Patent number: 8340002Abstract: An improved method and a communication means node implementing the method for load control in connection with a multimedia service transmission intended for multiple receivers over a wireless network are disclosed. The receivers in the wireless network are able to respond to requests communicated from an ordering entity by feeding back responses to a management entity in said wireless network. The feedback of these responses uses a different communication means, separate from said wireless network. This different communication means has limited communication resources. A transmission load caused in said different communication means by said feedback of said responses is according to the invention controlled by the different communication means itself.Type: GrantFiled: April 29, 2009Date of Patent: December 25, 2012Assignee: Huawei Technologies Co., Ltd.Inventors: Johan Johansson, Michael Roberts
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Publication number: 20120314630Abstract: Systems and methods achieve higher spectral efficiency for broadcast networks based on grouping of band segments to enable effective reuse of radio frequency spectrum that enables realizable filters. This may involve co-location of transmitters for a specific group. The grouping of band segments can be applied in a broadcast architecture in which the broadcast market is served by a plurality of low-power, low height transmitters rather than a single high power, high transmitter antenna. By combining the benefits of grouping band segments with low-power, low-transmitter heights which exhibit shorter jamming ranges, further improvements in bandwidth utilization and availability can be achieved. Such a broadcast network may be deployed on transmission sites of existing cellular telephone networks.Type: ApplicationFiled: June 12, 2012Publication date: December 13, 2012Inventors: Gordon Kent WALKER, Xiaoxia ZHANG
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Publication number: 20120314629Abstract: It would be to provide a method which will work with future versions of LTE-A, be backwards compatible and alleviate interference to signals for basic system operation. The method includes generating one or more Reference Signals associated with the one or more Channel Quality Indicators, and includes mapping the one or more Channel Quality Indicator-Reference Signals to the last symbol of the second slot of the one or more subframes.Type: ApplicationFiled: August 21, 2012Publication date: December 13, 2012Applicant: NEC CorporationInventor: Boon Loong NG
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Publication number: 20120307633Abstract: Disclosed is a wireless backhaul network for a communications system. The network comprises a congregate node connected to the communications system; a plurality of access points, each access point having associated amounts of incident bidirectional traffic to be conveyed to and from the congregate node; and a plurality of bidirectional wireless links adapted to convey the traffic between the access points and the congregate node. The congregate node is configured to allocate spectrum to each directional component of each link within a predetermined available spectrum for the conveyance of the traffic, wherein the allocation is dependent on the amounts of traffic at the respective access points.Type: ApplicationFiled: June 30, 2011Publication date: December 6, 2012Applicant: Commonwealth Scientific And Industrial Research OrganisationInventors: Iain Bruce Collings, Wei Ni
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Publication number: 20120294210Abstract: A method and device for scheduling downlink subframes are disclosed in the embodiments of the present invention, in which a control section of one subframe schedules data sections of one or more other subframes, making it possible to greatly save an overhead of control signaling to thereby have more resources for transmission of data and improve the performance of a system as compared with traditional scheduling of a single subframe.Type: ApplicationFiled: January 31, 2011Publication date: November 22, 2012Inventors: Dajie Jiang, Guangyi Liu, Yong Zhang