Combined Time And Frequency Assignment Patents (Class 370/436)
  • Patent number: 10440716
    Abstract: A method and system for controlling wireless communication over an air interface between a base station and a user equipment device (UE) served by the base station. In examples, the base station is configured to use a particular modulation and coding scheme (MCS) to transmit downlink control signals over the air interface to the UE without the base station beamforming the downlink control signals to the UE. Responsive to the base station determining that the UE is experiencing threshold poor RF conditions on the air interface, the base station reconfigures itself to beamform downlink control signals to the UE. And, given that the base station is reconfigured to beamform downlink control signals to the UE, the base station further reconfigures itself to use a higher-order MCS to transmit downlink control signals to the UE.
    Type: Grant
    Filed: January 6, 2017
    Date of Patent: October 8, 2019
    Assignee: Sprint Spectrum L.P.
    Inventors: Hemanth B. Pawar, Krishna Sitaram, Chunmei Liu, Pratik Kothari
  • Patent number: 10382114
    Abstract: There is provided mechanisms for configuring reception of beam reports. A method is performed by a network node. The method comprises scheduling wireless devices to provide beam reports in a common time/frequency resource. The method comprises monitoring reception of the beam reports from the wireless devices in the common time/frequency resource using a cell-covering reception beam created by an analog beamforming network.
    Type: Grant
    Filed: March 16, 2017
    Date of Patent: August 13, 2019
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Andreas Nilsson, Fredrik Athley, Sven Petersson
  • Patent number: 10356242
    Abstract: A computing system for managing one or more communication interrupts during a communication session associated with a resource in an enterprise is disclosed. The computing system includes a monitoring module for monitoring one or more parameters of the communication session. The system further includes a database for storing the one or more monitored parameters. The system further includes a determination module for determining at least one participation score for the resource based on the one or more stored parameters. The system further includes a control module for controlling the one or more communication interrupts based on the at least one determined participation score.
    Type: Grant
    Filed: January 19, 2015
    Date of Patent: July 16, 2019
    Assignee: Avaya Inc.
    Inventors: Thomas J. Moran, Ronan Fox, Neil O'Connor, Paul D'Arcy, Liam Loftus
  • Patent number: 10355825
    Abstract: A shared signaling channel has multiple segments, and parameters for this channel may or may not be sent to users in advance. For example, the number of segments, the size and rate of each segment, and so on may be broadcast to the users via an overhead channel. The transmit power for each segment is not broadcast to the users and can range from zero to the total transmit power. A base station obtains signaling for all terminals within its coverage and maps the signaling for each terminal to at least one segment used for the terminal, which may be dynamically selected. The base station processes (e.g., jointly or individually encodes) the signaling mapped to each segment and generates output data for the segment. The output data for each segment is multiplexed onto the system resources allocated for the segment and transmitted at the selected power level.
    Type: Grant
    Filed: March 10, 2005
    Date of Patent: July 16, 2019
    Assignee: QUALCOMM Incorporated
    Inventor: Avneesh Agrawal
  • Patent number: 10263753
    Abstract: In order to improve the quality of communication between electronic devices, one or more sub-channels used during communication between the electronic devices are dynamically modified based on one or more performance metrics and allowed transmit powers of the sub-channels. In particular, when the one or more performance metrics indicate that a distance between the electronic devices falls within a mid-range of distances, the one or more performance metrics may be used to guide selective changes to the sub-channels used during the communication based on the allowed transmit powers. The changes to the sub-channels used during the communication may increase, decrease or leave the total bandwidth unchanged. Moreover, by changing the sub-channels used during the communication, the allowed transmit power(s) of the sub-channel(s) used may be increased, which may improve the performance during the communication.
    Type: Grant
    Filed: September 10, 2015
    Date of Patent: April 16, 2019
    Assignee: Apple Inc.
    Inventors: Lei Li, Xiaojun Chen, Vusthla Sunil Reddy, Diego C. Hernandez, Peter M. Agboh, Mohit Narang, Ruben Caballero, Indranil S. Sen
  • Patent number: 10110354
    Abstract: Methods and systems are described that are suitable for channelization, in particular, but not limited to, the IEEE 80216.m telecommunications standard. For a time-frequency resource, physical sub-carriers for each of one or more zones in the time-frequency resource are assigned to one or more zones having a respective type of transmission. At least one zone is allocated for a type of transmission using localized sub-carriers. The physical sub-carriers assigned to each zone are permuted to map to logical sub-carriers. Groups of resource blocks are formed, in which each resource block includes at least one logical sub-carrier for each of the one or more zones. The information defining the groups of resource blocks for each of the one or more zones can then be transmitted to a user. The information may be in the form of a zone configuration index.
    Type: Grant
    Filed: May 23, 2017
    Date of Patent: October 23, 2018
    Assignee: Apple Inc.
    Inventors: Sophie Vrzic, Dong-Sheng Yu, Mo-Han Fong
  • Patent number: 10051660
    Abstract: Methods, systems, apparatuses, and devices are described for wireless communication. From a plurality of physical carriers associated with a clear channel assessment (CCA) performed by a device, one of the physical carriers for which the CCA was successful may be identified. A virtual carrier associated with a wireless data transmission by the device may be mapped to the identified one of the physical carriers.
    Type: Grant
    Filed: September 18, 2014
    Date of Patent: August 14, 2018
    Assignee: QUALCOMM Incorporated
    Inventors: Srinivas Yerramalli, Tao Luo, Wanshi Chen, Hao Xu
  • Patent number: 10051541
    Abstract: In a communication network (100) comprising a plurality of wireless devices (120), a method determines whether to change one or more communication channels over which the wireless devices (120) communicate. The method includes receiving a plurality of configuration parameters for the communication network (100); receiving information related to one or more communication channel's availability for communications by one or more of the wireless devices (120); and determining whether to change one or more communication channels over which the wireless devices (120) communicate by executing a communication channel change determination algorithm using the configuration parameters and the received information related to one or more communication channel's availability for communications by one or more of the wireless devices (120).
    Type: Grant
    Filed: May 20, 2008
    Date of Patent: August 14, 2018
    Assignee: PHILIPS LIGHTING HOLDING B.V.
    Inventors: Philip Andrew Rudland, Immo Benjes
  • Patent number: 9883453
    Abstract: Embodiments of the present disclosure disclose a method for a terminal to camp on a cell. A method for a terminal to camp on a cell includes acquiring, by a mobile terminal, a signal of an available cell, where when the mobile terminal is not camped on a serving cell, the signal of the available cell includes a signal, detected by the mobile terminal, of the cell, or when the mobile terminal camps on the serving cell, the signal of the available cell includes a signal of the serving cell and a signal of a neighboring cell of the serving cell. When a cell signal value of the available cell meets a standard cell access criterion, selecting, by the mobile terminal according to a signal strength and a historical camp-on success rate, an effective cell from the available cell, and camping, by the mobile terminal, on the effective cell.
    Type: Grant
    Filed: October 30, 2013
    Date of Patent: January 30, 2018
    Assignee: HUAWEI DEVICE (DONGGUAN) CO., LTD.
    Inventors: Yinqing Jiang, Li Shen, Xiaojian Liu, Bei Dai
  • Patent number: 9843481
    Abstract: Systems and methods for configuring network devices are provided. According to some aspects, a computing device may receive status information regarding network usage by a network device. The computing device may receive an identifier of the network device. A determination may be made to alter a first communication ability of the network device based on the status information. For example, a communication protocol or communication port may have one or more aspects altered. In response, the computing device may select an updated communication parameter based on the status information and/or the identifier of the network device. The updated communication parameter may be selected based on compatibility with the network device. The updated communication parameter may be transmitted to the network device. The updated communication parameter may cause alteration of the first communication ability while leaving unchanged a second communication ability.
    Type: Grant
    Filed: September 26, 2016
    Date of Patent: December 12, 2017
    Assignee: Comcast Cable Communications, LLC
    Inventor: Maurice Garcia
  • Patent number: 9793985
    Abstract: Disclosed are an optical burst transport network (OBTN) time slot length adjustment method, device and node, the method comprising: during OBTN initialization, measuring the circumference of a data channel, and calculating the OB time slot length according to the measurement result; and during the normal operation of an OBTN, conducting real-time detection on the circumference variation of the OBTN data channel, comparing a variation value with a preset threshold, and correspondingly processing the OB time slot length according to the comparison result.
    Type: Grant
    Filed: June 16, 2014
    Date of Patent: October 17, 2017
    Assignee: Xi'An Zhongxing New Software Co.Ltd.
    Inventors: Gaofeng An, Yingchun Shang
  • Patent number: 9641321
    Abstract: A method and apparatus is provided for the virtualization of cryptographic resources which enables memory speed encryption and decryption that is not bound by the speed at which processor resources can compute the result of a symmetric-key algorithm. This is achieved through a time-memory tradeoff via empty space at provisioning time. When implementing the apparatus, un-initialized memory is filled with the output of a symmetric-key algorithm uniquely keyed for the specific set of data that is going to be written to the provisioned area. Since the provisioning operation stores cryptographically structured data, rather than redundant data, plaintext that is xor'ed into memory is automatically encrypted and ciphertext that xor'ed into memory is automatically decrypted without the need for additional cryptographic computation. This reduced computation requirement enables cryptographic function to be implemented at the ends of communication, rather than the middle, and treated as a virtualized resource.
    Type: Grant
    Filed: November 5, 2014
    Date of Patent: May 2, 2017
    Assignee: DARK SIGNAL RESEARCH, LLC
    Inventors: David H Leventhal, Robert F Barnitt
  • Patent number: 9584238
    Abstract: Apparatuses may perform and methods may include receiving a digital broadcast signal that includes a physical layer pipe identified by a predetermined identifier indicating that the physical layer pipe includes service guide bootstrap information. The bootstrap information may identify one or more service guides available for download. The physical layer pipe may include header information that identifies one or more other physical layer pipes containing portions of the service guides identified in the bootstrap information. Based on the bootstrap information and header information, a selected service guide is retrieved and presented to a user.
    Type: Grant
    Filed: June 24, 2011
    Date of Patent: February 28, 2017
    Assignee: Nokia Corporation
    Inventors: Jani Petteri Väre, Jyrki Tapio Alamaunu, Reino Juhani Hiltunen, Juhani Huttunen
  • Patent number: 9462488
    Abstract: A system and method are provided for a WiFi network including multiple access points, each access point including an antenna having a plurality of modes corresponding to a plurality of radiation patterns, respectively, or an antenna system including a plurality of antennas having a plurality of modes corresponding to a plurality of radiation patterns, respectively, and a processor implemented with an algorithm. The algorithm is a computer program having instructions for performing steps to optimize signal quality for multiple devices linked to the WiFi network.
    Type: Grant
    Filed: June 24, 2014
    Date of Patent: October 4, 2016
    Assignee: ETHERTRONICS, INC.
    Inventors: Olivier Pajona, Sebastian Rowson, Laurent Desclos
  • Patent number: 9341676
    Abstract: A packet-based testing capability is provided. The packet-based testing capability is configured to provide a packet-based JTAG (PJTAG) protocol. The PJTAG protocol is an asynchronous protocol configured to support the synchronous JTAG protocol. The PJTAG protocol is configured to convert between JTAG signals and packets configured to transport information of the JTAG signals (e.g., to convert JTAG signals into PJTAG packets at an interface from a JTAG domain to a PJTAG domain and to convert PJTAG packets into JTAG signals at an interface from a PJTAG domain to JTAG domain).
    Type: Grant
    Filed: October 7, 2011
    Date of Patent: May 17, 2016
    Assignee: Alcatel Lucent
    Inventor: Michele Portolan
  • Patent number: 9313109
    Abstract: Embodiments are provided herein for reducing neighbor cell monitoring by a mobile communication device that may include measuring a channel condition of the cell serving the idle network subscription, determining whether the measured channel condition of the cell serving the idle network subscription satisfies a threshold value, and in response to determining that the measured channel condition of the cell serving the idle network subscription satisfies the threshold value, reducing a frequency at which neighbor cells associated with the idle network subscription are monitored and monitoring the neighbor cells associated with the idle network subscription according to the reduced frequency.
    Type: Grant
    Filed: April 17, 2015
    Date of Patent: April 12, 2016
    Assignee: QUALCOMM Incorporated
    Inventors: Anindya Majumder, Farrukh Rashid, Divaydeep Sikri, Jafar Mohseni, Krishna Rao Mandadapu
  • Patent number: 9313771
    Abstract: A method and device for allocating a channel in a decentralized trunked radio communication system enables efficient channel utilization. The method includes scanning at a first subscriber unit a plurality of channels to determine whether a call of interest to a first subscriber unit is active in the system (step 410). The plurality of channels is then scanned at the first subscriber unit to identify a first channel that is clear in the plurality of channels after determining that there is no call of interest to the first subscriber unit active in the system (step 415). The first subscriber unit is then tuned to the first channel that is clear (step 420).
    Type: Grant
    Filed: October 20, 2010
    Date of Patent: April 12, 2016
    Assignee: MOTOROLA SOLUTIONS, INC.
    Inventor: Pawel Jurzak
  • Patent number: 9270401
    Abstract: A method of transmitting orthogonal frequency division multiple access (OFDMA) signals includes transmitting, at a first transmitter of a network, a first stream of data having a first number of symbols over a first time interval using a first set of one or more OFDMA subcarriers. At a second transmitter of the network, a second stream of data is transmitted having a second number of symbols over a second time interval, different in duration than the first time interval and overlapping the first time interval. The second burst of data is transmitted using a second set of one or more OFDMA subcarriers. The first time interval and first set of subcarriers define a first time-frequency grant, the second time interval and second set of subcarriers define a second time-frequency grant, and the first and second time-frequency grants are granted by a network coordinator node of the network.
    Type: Grant
    Filed: March 30, 2011
    Date of Patent: February 23, 2016
    Inventor: David Barr
  • Patent number: 9066265
    Abstract: Logic such as hardware and/or code to narrow available sub-channels in frequency selective transmission communications in which a station selects a narrow band from a wider channel bandwidth. A frequency selective transmission scheme for communications devices may select a 1 or 2 MHz channel from a wider channel bandwidth (e.g., 4, 8, 16 MHz) that consists of a number of 1 or 2 MHz sub-channels and transmitting packets on the selected sub-channel. The access point may narrow the number of sub-channels available for selection by stations. Stations may narrow the number of sub-channels. Both the AP and the stations may operate to narrow the number of sub-channels. A medium access control sub-layer protocol common to the communications devices may facilitate a frequency selective transmission scheme.
    Type: Grant
    Filed: December 29, 2012
    Date of Patent: June 23, 2015
    Assignee: Intel Corporation
    Inventors: Minyoung Park, Eldad Perahia, Thomas J. Kenney, Shahrnaz Azizi
  • Patent number: 9021126
    Abstract: A data processing apparatus includes multiple processing means that are connected in a ring shape via corresponding communication means respectively. Each communication means includes a reception means for receiving data from a previous communication means, and a transmission means for transmitting data to a next communication means. Connection information is assigned to each of the reception means and the transmission means. The communication means, when receiving a packet that has same connection information as one assigned to its reception means, causes the corresponding processing means to perform data processing on the packet, sets the connection information assigned to its transmission means to the packet, and transmits the packet to the next communication means, and when receiving a packet that has connection information that is not same as one assigned to its reception means, transmits the packet to the next communication means without changing the connection information of the packet.
    Type: Grant
    Filed: January 15, 2010
    Date of Patent: April 28, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventor: Hisashi Ishikawa
  • Patent number: 9019933
    Abstract: Method and associated apparatus for communicating data at reduced transmission latency in a radio communication system having a slotted interface are described. An example network device includes an assignor to receive an indication of an amount of data to be communicated by a first communication station, and assign communication resources to convey all of the indicated data amount, the assigned communication resources comprising a plurality of time slots within one time frame and one radio carrier and a data scheduler to receive an indication of assigned communication resources, and to schedule communication of the data block in conformity with the assigned communication resources and in response to a communication station minimum tuning latency period, wherein the schedule of the communication of the data block provides for completion of the communication of the data block and acknowledgement of successful delivery of the data block within the one time frame.
    Type: Grant
    Filed: January 20, 2014
    Date of Patent: April 28, 2015
    Assignee: BlackBerry Limited
    Inventors: Mark Pecen, Mihal Lazaridis, Sean Simmons, Johanna Dwyer
  • Patent number: 9019982
    Abstract: Disclosed is a wireless communication base station device that can suppress increases in terminal power consumption while being able to perform CCE allocation flexibly. In the device, a search space setting unit (103) sets search space for each wireless communication terminal device that communicates using multiple downlink unit bands. When the aggregation level of a CCE that is allocated control information addressed to the wireless communication terminal devices is less than a threshold value, an allocating unit (106) allocates the control information to a CCE inside the search space established in a single one of the multiple downlink unit bands. When the aggregation level is greater than the threshold value, the control information is allocated distributed to the CCEs inside the search spaces established for each of the multiple downlink unit bands.
    Type: Grant
    Filed: January 28, 2010
    Date of Patent: April 28, 2015
    Assignee: Panasonic Intellectual Property Corporation of America
    Inventors: Akihiko Nishio, Seigo Nakao
  • Patent number: 9008594
    Abstract: A method for adaptive communication in an HF frequency band includes at least one of the following steps: the determination of a payload subband S that is available for a transmission in the HF band, the selection in the payload subband S of a set of n frequency channels of identical width according to a frequency allocation plan and the quality of the link of each of said channels, or the simultaneous transmission on the n frequency channels of a signal complying with an HF waveform.
    Type: Grant
    Filed: November 30, 2011
    Date of Patent: April 14, 2015
    Assignee: Thales
    Inventors: Catherine Lamy-Bergot, Crambert Philippe, Multedo Gilbert, Merel Dominique, Gaschi Jean-François
  • Patent number: 9008036
    Abstract: The present invention employs a pilot scheme for frequency division multiple access (FDM) communication systems, such as single carrier FDM communication systems. A given transmit time interval will include numerous traffic symbols and two or more short pilot symbols, which are spaced apart from one another by at least one traffic symbol and will have a Fourier transform length that is less than the Fourier transform length of any given traffic symbol. Multiple transmitters will generate pilot information and modulate the pilot information onto sub-carriers of the short pilot symbols in an orthogonal manner. Each transmitter may use different sub-carriers within the time and frequency domain, which is encompassed by the short pilot symbols within the transmit time interval. Alternatively, each transmitter may uniquely encode the pilot information using a unique code division multiplexed code and modulate the encoded pilot information onto common sub-carriers of the short pilot symbols.
    Type: Grant
    Filed: December 20, 2012
    Date of Patent: April 14, 2015
    Assignee: Apple Inc.
    Inventors: Jianglei Ma, Ming Jia, Hua Xu, Wen Tong, Peiying Zhu, Moussa Abdi
  • Patent number: 9001794
    Abstract: Methods and systems for assigning a wireless communication device (WCD) to a wireless coverage are a based on early termination gain (ETG) are presented. In particular, a RAN may receive a request, from a WCD, for an assignment to one of a plurality of wireless coverage areas. In response to receiving the request, the RAN may select a wireless coverage area of the plurality that has a highest ETG, and assign the WCD to the selected wireless coverage area. Prior to selecting this wireless coverage area, the RAN may optionally remove one or more wireless coverage areas with high utilization from consideration.
    Type: Grant
    Filed: January 24, 2013
    Date of Patent: April 7, 2015
    Assignee: Sprint Spectrum L.P.
    Inventors: Anil Singh, Samuel Odedina, Abhishek Lall, Cheryl M. Nichols
  • Patent number: 9001777
    Abstract: Systems and methods for communicating over multiple carriers are described herein. A predetermined event triggers the generation of scheduling information for two or more of the carriers. The predetermined event may comprise expiration of a timer set for at least one of the two or more carriers, storing data in a buffer having a higher transmission priority than data previously stored in the buffer, or changing at least one of the two or more carriers from being served by a first cell to being served by a second cell.
    Type: Grant
    Filed: March 15, 2010
    Date of Patent: April 7, 2015
    Assignee: QUALCOMM Incorporated
    Inventors: Danlu Zhang, Sharad Deepak Sambhwani, Aziz Gholmieh, Rohit Kapoor, Jilei Hou, Ozcan Ozturk, Arjun Bharadwaj
  • Patent number: 8995291
    Abstract: A method, an apparatus, and a computer program product for wireless communication are provided. In a first configuration, the apparatus maintains a first set of tracking loops associated with unicast signals and a second set of tracking loops associated with multicast/broadcast signals. In addition, the apparatus decoding at least one of a received unicast signal based on the first set of tracking loops or a received multicast/broadcast signal based on the second set of tracking loops. In a second configuration, the apparatus maintains a TTL and a FTL associated with unicast signals based only on received unicast signals. In addition, the apparatus receives a multicast/broadcast signal and decodes the received multicast/broadcast signal based on the TTL and the FTL maintained based only on the received unicast signals.
    Type: Grant
    Filed: September 21, 2011
    Date of Patent: March 31, 2015
    Assignee: QUALCOMM Incorporated
    Inventors: Xiaoxia Zhang, Gordon Kent Walker, Jun Wang, Zhengwei Liu
  • Patent number: 8995371
    Abstract: The present invention enables random access which does not cause a load on a mobile station apparatus in an Advanced-EUTRA system.
    Type: Grant
    Filed: March 9, 2011
    Date of Patent: March 31, 2015
    Assignee: Sharp Kabushiki Kaisha
    Inventor: Yasuyuki Kato
  • Patent number: 8989205
    Abstract: A method and system operable to implement a multiple range, and optionally one-dimensional, transport scheduling process suitable to facilitate signal transport over a network for a variety of traffic types with different service requirements where two-dimensional mapping across frequency and/or time is required.
    Type: Grant
    Filed: May 9, 2013
    Date of Patent: March 24, 2015
    Assignee: Cable Television Laboratories, Inc.
    Inventors: Luis Alberto Campos, Jennifer Andreoli-Fang
  • Patent number: 8989137
    Abstract: A transmission method simultaneously transmitting a first modulated signal and a second modulated signal at a common frequency performs precoding on both signals using a fixed precoding matrix and regularly changes the phase of at least one of the signals, thereby improving received data signal quality for a reception device.
    Type: Grant
    Filed: September 16, 2014
    Date of Patent: March 24, 2015
    Assignee: Panasonic Intellectual Property Corporation of America
    Inventors: Yutaka Murakami, Tomohiro Kimura, Mikihiro Ouchi
  • Patent number: 8989135
    Abstract: A spectral arrangement for radio resources is usable for transmitting radio data within a telecommunication network. The spectral arrangement includes (a) a first radio resource usable for transmitting radio data in a first data flow direction, wherein the first data flow direction is either an uplink direction or a downlink direction, (b) a second radio resource usable for transmitting radio data in a second data flow direction, wherein the second data flow direction is opposite to the first data flow direction, (c) a third radio resource usable for transmitting radio data in the second data flow direction and (d) a guard band, which on the frequency scale is located between the first radio resource and the second radio resource such that the first radio resource is separated from the second radio resource Between the second radio resource and the third radio resource there is provided no guard band.
    Type: Grant
    Filed: July 9, 2009
    Date of Patent: March 24, 2015
    Assignee: Nokia Siemens Networks Oy
    Inventors: Peter Skov, Jie Zhen Lin, Chun Hai Yao
  • Patent number: 8982846
    Abstract: Systems, methods and apparatus are provided for scheduling resources in Orthogonal Frequency-Division Multiple Access (OFDMA) communication networks for “direct link” or peer-to-peer communications among stations operating therein so that OFDMA resources can be allocated to a transmitter station for a peer-to-peer communication session with a receiver station such that near-far issues caused by peer-to-peer communication are reduced/avoided. The disclosed technologies can prevent peer-to-peer communication links using different sub-channels within the same time slot from creating near-far issues for other receiver stations that are within communication range.
    Type: Grant
    Filed: August 30, 2012
    Date of Patent: March 17, 2015
    Assignee: Motorola Solutions, Inc.
    Inventors: Michael H. Baker, Jeffrey D. Bonta, George Calcev, Nitin R. Mangalvedhe, James P. Michels, Nathan J. Smith
  • Patent number: 8983487
    Abstract: The present invention relates to an adaptive transmitting device using limited feedback information in a mobile communication system, and a method thereof. According to an exemplary embodiment of the present invention, when the base station transmits a pilot signal to the terminal, the terminal generates channel information by using the pilot signal, generates additional channel information from the channel information, and transmits the channel information and the additional channel information to the base station. The base station determines band allocation, power allocation, and modulation methods for each use by using received feedback information, and transmits modulated traffic data to the terminal according to the determined methods.
    Type: Grant
    Filed: December 23, 2013
    Date of Patent: March 17, 2015
    Assignees: Electronics and Telecommunications Research Institute, Industry-Academic Cooperation Foundation, Yonsei University
    Inventors: Young-Jo Ko, Jae-Young Ahn, Kwang-Soon Kim, Jung-Hyoung Kwon, Keum-Chan Whang
  • Patent number: 8982766
    Abstract: Disclosed is a signal transmission method performed by a relay station in a wireless communication system. The method comprises the steps of: arranging guard time within at least one symbol period in a subframe which is configured with multiple symbol periods in a time domain; and transmitting a control signal or data to a base station by using symbol periods except for the symbol periods which include the guard time in the subframe. The guard time is equal to or shorter than one symbol period. The structure in which the control signal or the data is arranged in each symbol period of the subframe is determined on the basis of the number of symbol periods except for the symbol periods which include the guard time.
    Type: Grant
    Filed: April 15, 2010
    Date of Patent: March 17, 2015
    Assignee: LG Electronics Inc.
    Inventors: Hak Seong Kim, Han Byul Seo, Ki Jun Kim
  • Patent number: 8971287
    Abstract: A method performs wireless communication between a motor vehicle and at least one other communication partner, especially a further motor vehicle and/or a stationary communication partner. A predetermined transmission frequency is used via which the motor vehicle and/or the communication partner transmit a communication-partner-specific identification signal cyclically between transmission breaks.
    Type: Grant
    Filed: September 29, 2011
    Date of Patent: March 3, 2015
    Assignee: Audi AG
    Inventor: Karl Jelinek
  • Patent number: 8970791
    Abstract: Provided a circuit board including an input terminal to which a high-frequency signal is input, a high-frequency amplifier for amplifying the high-frequency signal input to the input terminal, at least one distributor distributing the high-frequency signal, a plurality of high-frequency processing circuits of which transmission path lengths for inputting each of the high-frequency signals distributed by the distributor into signal inputting sections of the plurality of high-frequency processing circuits are different from one another, and a plurality of attenuating devices which are mounted at previous stages of each of the plurality of high-frequency processing circuits and possess amounts of attenuation which increase with decrease of the transmission path lengths.
    Type: Grant
    Filed: July 18, 2012
    Date of Patent: March 3, 2015
    Assignee: Sony Corporation
    Inventors: Toshikazu Yoshida, Hideaki Ozawa
  • Patent number: 8964762
    Abstract: In one embodiment, a battery-operated communication device “quick-samples” a frequency hopping sequence at a periodic rate corresponding to a substantially low duty cycle, and is discovered by (e.g., attached to) a main-powered communication device. During a scheduled sample, the main-powered communication device transmits a control packet to be received by the battery-operated communication device, the control packet containing timing information and transmitted to account for worst-case clock drift error between the two devices. The battery-operated communication device responds to the control packet with a link-layer acknowledgment containing timing information from the battery-operated communication device. Accordingly, the two devices may re-synchronize their timing based on the timing information in the control packet and acknowledgment, respectively.
    Type: Grant
    Filed: November 20, 2013
    Date of Patent: February 24, 2015
    Assignee: Cisco Technology, Inc.
    Inventors: Jonathan W. Hui, Lik Chuen Alec Woo, Wei Hong
  • Patent number: 8964623
    Abstract: The present invention relates to a wireless communication system, and provides a method and an apparatus for transmitting a downlink reference signal in the wireless communication system. The method for enabling a base station to transmit the reference signal to a terminal using layers of 8 or less in accordance with one embodiment of the present invention comprises the steps of: transmitting data for the layers of 8 or less through a data domain of a downlink sub frame; and transmitting a reference signal for the layers of 8 or less on a fixed OFDM symbol of the downlink sub frame, wherein the reference signal is a DRS (Dedicated Reference Signal) which demodulates the data for the layers of 8 or less, and the reference signal for the layers of 8 or less is separated into 1st and 2nd groups, and reference signals of the 1st and 2nd groups can be multiplexed in a CDM (Code Division Multiplexing) method on one resource element, respectively.
    Type: Grant
    Filed: April 12, 2010
    Date of Patent: February 24, 2015
    Assignee: LG Electronics Inc.
    Inventors: Hyun Soo Ko, Bin Chul Ihm, Sung Ho Park, Young Seob Lee, Seung Hyun Kang, Ja Ho Koo, Su Nam Kim, Wook Bong Lee, Jin Young Chun
  • Patent number: 8953643
    Abstract: The present invention discloses Measurement configuration method of multi-carrier system and equipment thereof, and the method comprises the following steps: the terminal determines whether the frequency of target PCC exists in the measurement configuration after inter-frequency handover or inter-frequency RRC connection re-establishment is completed successfully, exchanges relevant measurement configuration of source PCC with that of target PCC when that of target PCC exists in the determined measurement configuration; and, deletes or reserves relevant measurement configuration of SCC, or exchanges relevant measurement configuration of source SCC with that of target SCC. The present invention solves the problem of measurement exchange and configuration of terminal under CA working condition when RRC connection re-establishment and handover of inter-frequency are completed successfully, saves air interface signaling and reduces the realization complexity.
    Type: Grant
    Filed: April 18, 2011
    Date of Patent: February 10, 2015
    Inventors: Jing Liang, Haitao Li
  • Patent number: 8953642
    Abstract: The present invention relates to a wireless communication system, and more particularly, to a method and apparatus for transmitting a downlink reference signal in a wireless communication system that supports multiple antennas. A method for transmitting channel state information-reference signals (CSI-RS) for two or more antenna ports according to one embodiment of the present invention comprises the steps of: mapping the CSI-RSs for the two or more antenna ports in predetermined patterns on a data region of a downlink subframe: an transmitting the downlink subframe mapped with the CSI-RSs for the two or more antenna ports, wherein the predetermined patterns are defined as patterns differing by a cell, and the different patterns may be defined as the predetermined patterns being shifted in a temporal range, frequency range, or a temporal range and a frequency range.
    Type: Grant
    Filed: September 15, 2010
    Date of Patent: February 10, 2015
    Assignee: LG Electronics Inc.
    Inventors: Yu Jin Noh, Dong Wook Roh, Joon Kui Ahn, Byeong Woo Kang, Dae Won Lee, Bong Hoe Kim, Eun Sun Kim
  • Patent number: 8953553
    Abstract: A method for switching between periodic transmission and aperiodic transmission of a channel estimation reference signal for scheduling resources in an Orthogonal Frequency Division Multiple Access (OFDMA) system and an apparatus to transmit/receive the reference signal using the same. To schedule periodic and aperiodic transmission of the channel estimation reference signal, a predetermined type of transmission indicator is used, the transmission indicator including one or more bits of a periodic/aperiodic identification indicator. According to the present embodiment, when periodic and aperiodic transmission of the channel estimation reference signal is mixedly performed, interference between user equipment or between cells can be minimized, and a transmission efficiency of the reference signal can be enhanced.
    Type: Grant
    Filed: January 28, 2011
    Date of Patent: February 10, 2015
    Assignee: Pantech Co., Ltd.
    Inventors: Kibum Kwon, Sungjin Suh
  • Patent number: 8948154
    Abstract: Techniques for supporting data transmission based on a low-complexity transmission scheme are described. In one design, a first user equipment (UE) generates a first transmission for a single subcarrier assigned to the first UE. The first UE sends the first transmission on the single subcarrier concurrently with a SC-FDMA transmission sent on multiple subcarriers by a second UE. In one design, the first UE generates a continuous sinusoidal signal at a frequency corresponding to the single subcarrier. The first UE modulates the continuous sinusoidal signal with data symbols and reference symbols. In one design, the first transmission includes a cyclic prefix followed by a useful portion in each symbol period and has phase discontinuity at symbol boundary. A base station processes a received signal to recover the first transmission sent by the first UE and the SC-FDMA transmission sent by the second UE.
    Type: Grant
    Filed: February 7, 2011
    Date of Patent: February 3, 2015
    Assignee: QUALCOMM Incorporated
    Inventors: Peter Gaal, Ravi Palanki
  • Patent number: 8942143
    Abstract: A time division duplex orthogonal frequency division multiplexing (TDD-OFDM) distributed antenna system (DAS), a base station and a remote access unit for the same are provided. The base station performs an inverse fast Fourier transform on a user downlink signal, a transmitting/receiving enable signal and an input control signal to generate a first OFDM signal. The user downlink signal is carried on a used subcarrier set of the first OFDM signal, while the transmitting/receiving enable signal and the input control signal are carried on a guard band subcarrier set of the first OFDM signal. The remote access unit receives the first OFDM signal via a fiber transmission line, switches between a transmitting mode and a receiving mode periodically, performs a clock synchronization with the base station according to the transmitting/receiving enable signal, and performs a system configuration according to the input control signal.
    Type: Grant
    Filed: November 14, 2011
    Date of Patent: January 27, 2015
    Assignee: Institute For Information Industry
    Inventors: Chingwo Ma, I-Chou Chung, Shih-i Chen, Chi-Hsien Kao
  • Patent number: 8937970
    Abstract: Radio resource allocation techniques for MIMO systems are disclosed, wherein SDMA groups that should be multiplexed on each frequency chunk in order to maximize the total downlink data rate are selected, while guaranteeing that a specified minimum number of flows from each service have their instantaneous QoS demands fulfilled. The disclosed techniques include an unconstrained maximization procedure, in which resources are initially allocated to data flows for each of several data services, followed by a reallocation procedure in which resources are reallocated to satisfy minimum satisfaction constraints for each data service.
    Type: Grant
    Filed: January 22, 2013
    Date of Patent: January 20, 2015
    Assignee: Telefonaktiebolaget L M Ericsson (publ)
    Inventors: Tarcísio Ferreira Maciel, Francisco Rodrigo Porto Cavalcanti, Walter Cruz Freitas Junior, Francisco Rafael Marques Lima
  • Patent number: 8934361
    Abstract: Embodiments of the present invention disclose a downlink Inter-Cell Interference Coordination (ICIC) method and relate to the wireless communication field. The method includes: obtaining information about multiple carriers in a current cell; obtaining, according to the information about the multiple carriers, a downlink ICIC parameter corresponding to each carrier of the multiple carriers; and sending the downlink ICIC parameter corresponding to each carrier to a neighboring cell of the current cell so as to enable the neighboring cell to perform, according to the downlink ICIC parameter, downlink interference coordination with the first cell. The embodiments of the present invention are applicable to downlink ICIC in a multi-carrier system.
    Type: Grant
    Filed: April 17, 2009
    Date of Patent: January 13, 2015
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Yuan He, Dengkun Xiao, Jian Huang, Chunfeng Yao, Yaojun Wang
  • Patent number: 8929326
    Abstract: Disclosed are a method and a device for transmitting an acknowledgement. A terminal receives at least one downlink transport block from at least one serving cell. The terminal selects one of an explicit resource and an implicit resource, and transmits an acknowledgement for at least one said downlink transport block by using the selected resource.
    Type: Grant
    Filed: June 16, 2011
    Date of Patent: January 6, 2015
    Assignee: LG Electronics Inc.
    Inventors: Joon Kui Ahn, Suck Chel Yang, Min Gyu Kim, Dong Youn Seo
  • Patent number: 8923250
    Abstract: Provided are a method and apparatus for allocating a plurality of layers to a plurality of antenna ports in a wireless communication system. The method comprises: mapping the plurality of layers to the respective antenna ports; and mapping demodulation reference signals (DMRS) of the plurality of layers to a first code division multiplexing (CDM) set or to a second CDM set, and transmitting the signals via the plurality of antenna ports.
    Type: Grant
    Filed: February 21, 2011
    Date of Patent: December 30, 2014
    Assignee: LG Electronics Inc.
    Inventors: Min Seok Noh, Jae Hoon Chung, Hyun Soo Ko, Seung Hee Han, Moon Il Lee
  • Patent number: 8917695
    Abstract: A method for parallel acquisition of system information from multiple base stations may be implemented by a mobile station. The method may include determining scheduled times for transmission of the system information from the multiple base stations based on parameters included in messages from the multiple base stations. The method may also include creating a schedule list that comprises the scheduled times. The method may further include tuning to the base stations at the scheduled times that are specified in the schedule list in order to receive the system information from the base stations.
    Type: Grant
    Filed: September 17, 2008
    Date of Patent: December 23, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Tom Chin, Kuo-Chun Lee
  • Publication number: 20140362869
    Abstract: Embodiments of the present invention provide a network node transmission method, apparatus, and system. The method includes: receiving a downlink optical signal sent by an OLT, where the downlink optical signal is obtained through digital-to-analog conversion and electrical-to-optical conversion performed by the OLT on a first downlink multiplexing digital signal, and in the first downlink multiplexing digital signal, multiple customer premises equipments CPE correspond to respective OFDM symbol timeslots and/or subcarriers; and performing optical-to-electrical conversion and analog-to-digital conversion on the downlink optical signal to obtain a second downlink multiplexing digital signal, demultiplexing the second downlink multiplexing digital signal to obtain downlink OFDM symbols for each CPE of the multiple CPEs, and performing digital-to-analog conversion on the downlink OFDM symbols of each CPE to obtain a downlink analog signal of each CPE.
    Type: Application
    Filed: March 6, 2014
    Publication date: December 11, 2014
    Applicant: Huawei Technologies Co., Ltd.
    Inventors: Zhong Pan, Meng Sui, Shicai Chen, Cao Shi
  • Patent number: 8908617
    Abstract: A base station capable of communicating with a plurality of subscriber stations is provided. The base station transmits control information and data to at least one of the plurality of subscriber stations in a subframe using a subset of antenna ports corresponding to a subset of antenna port numbers. The base station maps reference signals corresponding to the subset of antenna ports according to a transmission rank R. The base station indicates, via a cyclic shift indicator (CSI) field in an uplink grant, an assigned resource index corresponding to the mapped reference signal. The CSI field includes a cyclic shift and an orthogonal cover code (OCC) index. The subscriber station uses a resource mapping table to identify the assigned resource index based on the transmission rank, cyclic shift and OCC index.
    Type: Grant
    Filed: December 16, 2010
    Date of Patent: December 9, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jianzhong Zhang, Young-Han Nam