Including Power Control Patents (Class 370/318)
  • Patent number: 8571596
    Abstract: The invention is a method of power negotiation between a first contactless device and a second contactless device which provides an electromagnetic field set to a first power level. The method comprises the steps of: a) sending a request from the first device to the second device. The request targets a second power level and an associated duration. The next step is: b) sending a response to the first device. The response reflects a decision of the second device corresponding to the request. The final step is: c) switching the electromagnetic field to the second power level if the decision is positive.
    Type: Grant
    Filed: November 16, 2010
    Date of Patent: October 29, 2013
    Assignee: Gemalto SA
    Inventor: Jean-Paul Caruana
  • Patent number: 8571595
    Abstract: A method for adjusting a gain level for a receiver of a first radio simultaneously operational with a transmitter of a second radio, comprising: determining a signal-to-noise ratio (“SNR”) value for signals received by the receiver from an access point (“AP”); and, when the first radio is associated with the AP and the transmitter is not transmitting, if the SNR value exceeds a SNR threshold, reducing the gain level for the receiver from an initial level and initiating transmission from the transmitter, otherwise maintaining the gain level for the receiver at the initial level and initiating transmission from the transmitter; wherein the SNR threshold is a SNR value above which beacon signals from the AP can be successfully received by the receiver.
    Type: Grant
    Filed: April 7, 2011
    Date of Patent: October 29, 2013
    Assignee: BlackBerry Limited
    Inventors: Mohammed Nawaf Smadi, Vytautas Robertas Kezys
  • Patent number: 8570952
    Abstract: In a wireless communication system including a wireless transmit/receive unit (WTRU) and at least one Node-B, a method and apparatus is used to selectively enable reception of at least one downlink (DL) enhanced uplink (EU) signaling channel established between the WTRU and the Node-B(s). During the operation of an enhanced dedicated channel (E-DCH), the WTRU monitors at least one DL EU signaling channel established between the WTRU and the Node-B(s) only when it is necessary, based on the WTRU's knowledge of at least one established standard procedure. The WTRU coordinates and consolidates DL signaling channel reception requirements of a plurality of channel allocation and/or data transmission procedures carried out by the WTRU in accordance with the established standard procedure. The WTRU determines whether to enable reception of at least one specific DL signaling channel based on the consolidated DL signaling channel reception requirements.
    Type: Grant
    Filed: March 31, 2005
    Date of Patent: October 29, 2013
    Assignee: InterDigital Technology Corporation
    Inventors: Stephen E. Terry, Guodong Zhang, Stephen G. Dick
  • Patent number: 8571594
    Abstract: Devices and methods are provided for transmit power control in a wireless communication environment. In one embodiment, the method may involve measuring an interference amount over at least one of a sub-band and a full bandwidth. The method may involve assigning a level to the measured interference amount, the level comprising one of an overloaded level and an underloaded level. The method may involve encoding the level as an overload indicator, the overload indicator being conditioned on the sub-band such that the overload indicator includes enhanced layer symbols regarding the level of the measured interference amount. The method may involve conveying the overload indicator to at least one mobile device.
    Type: Grant
    Filed: July 29, 2010
    Date of Patent: October 29, 2013
    Assignee: Qualcomm Incorporated
    Inventors: Tao Luo, Yongbin Wei, Durga Prasad Malladi
  • Patent number: 8565806
    Abstract: Controlling the output power of a radio transmitter includes operating the transmitter at an initial power level setting and making an output power measurement. The measured value is adjusted by a desired incremental value and the adjusted value is then compared with the power of the original baseband signal to obtain a representation of what the gain should be if the radio transmitter power is properly adjusted to achieve the desired incremental value. The output power of the radio transmitter is than actually adjusted, and the actual gain is measured. The difference between the actual gain and the representation of what the gain should be if the radio transmitter power is properly adjusted is used to determine a further power adjustment of the radio transmitter that will reduce the difference.
    Type: Grant
    Filed: December 12, 2010
    Date of Patent: October 22, 2013
    Assignee: ST-Ericsson SA
    Inventors: Ralf Burdenski, David Pehlke
  • Patent number: 8565146
    Abstract: Techniques for supporting data transmission on multiple carriers in a wireless communication system are described. A user equipment (UE) may determine available transmit power for data transmission on multiple carriers. The UE may distribute the available transmit power to multiple carriers (e.g., using uniform power distribution, greedy filling, water filling, etc.) to obtain allocated transmit power for data for each carrier. The UE may send at least one resource request with information indicative of the allocated transmit power for each of the multiple carriers to a Node B. The UE may receive at least one resource grant with information indicative of granted transmit power for each of at least one carrier, which may be all or a subset of the multiple carriers. The UE may send data on the at least one carrier and may limit its transmit power for each carrier to the granted transmit power for that carrier.
    Type: Grant
    Filed: February 26, 2009
    Date of Patent: October 22, 2013
    Assignee: QUALCOMM Incorporated
    Inventors: Danlu Zhang, Mehmet Yavuz, Bibhu P. Mohanty, Pavan Kumar Vitthaladevuni
  • Patent number: 8565134
    Abstract: The disclosed subject matter relates to energy efficiency in mobile devices associated with a wireless communications environment. Power Saving Classes (PSCs) aim to reduce the power consumption of mobile devices based on the different types of traffic. Optimizing sleep mode selection schemes so as to maximize the energy efficiency while providing a QoS guarantee can be accomplished with optimization of a theoretical framework based on the semi-Markov Decision Process along with a performance evaluation on the sleep mode operation. A novel Policy Optimization algorithm is capable of finding optimized policies for a selection of different PSCs.
    Type: Grant
    Filed: December 1, 2010
    Date of Patent: October 22, 2013
    Assignee: Dynamic Invention LLC
    Inventors: Lei Kong, Ka Wai Wong, Danny Hin Kwok Tsang
  • Patent number: 8565808
    Abstract: A transmission power determination system configured to control a transmission power of a radio signal transmitted by a small base station in a mobile communication network including a general base station forming a predetermined cell and the small base station forming a small cell smaller in size than the predetermined cell, the transmission power determination system comprising: a reception power acquisition unit configured to acquire a reception power of a radio signal from one of a different small base station or the general base station, which can be received by the small base station; a determination unit configured to determine one of the different small base station and the general base station which transmits the radio signal acquired by the reception power acquisition unit; a pathloss value calculation unit configured to calculate, when it is determined by the determination unit that the radio signal is transmitted from the different small base station, pathloss value between the different small bas
    Type: Grant
    Filed: August 5, 2011
    Date of Patent: October 22, 2013
    Assignee: NTT DoCoMo, Inc.
    Inventors: Hiroyuki Hosono, Takeshi Terayama, Takahiro Hayashi
  • Patent number: 8565807
    Abstract: It is described a method for transmitting a synchronization signal within a cellular telecommunication network. The method includes activating a first base station of the cellular telecommunication network, informing at least one second base station, which is a potentially interfering base station with respect to the first base station, about the activation of the first base station, and broadcasting the synchronization signal by the at least one second base station with a temporarily increased transmitting power. It is further described a second base station for transmitting a synchronization signal to another base station of the cellular telecommunication network and a central network element, which is adapted to prompt a base station in order to transmit a synchronization signal. Furthermore, it is described a program element, which is adapted for controlling the described synchronization signal transmitting method.
    Type: Grant
    Filed: August 13, 2009
    Date of Patent: October 22, 2013
    Assignee: Nokia Siemens Networks Oy
    Inventors: Juergen Michel, Bernhard Raaf, Alexander Vesely
  • Patent number: 8559356
    Abstract: A wireless relay device that transmits a reception signal from a transmission device to a reception device includes a determination section configured to determine whether or not the reception signal is a retransmission signal retransmitted from the transmission device, and an amplification section configured to amplify the reception signal when the determination section determines that the reception signal is the retransmission signal, and not to amplify the reception signal when the determination section determines that the reception signal is not the retransmission signal.
    Type: Grant
    Filed: May 27, 2010
    Date of Patent: October 15, 2013
    Assignee: Fujitsu Limited
    Inventors: Kotaro Shiizaki, Masafumi Tsutsui, Kazuo Kawabata
  • Patent number: 8559995
    Abstract: In a wireless telecommunication system, a power control apparatus performs a data telecommunication with a control target apparatus and receives data arrival acknowledgement information transmitted therefrom in a data retransmission layer. Then it judges a reception quality of the control target apparatus by using the received data arrival acknowledgement information and changes a target power quality which is set up for the control target apparatus based on a result of the judgment. And it notifies the control target apparatus of the changed target power quality.
    Type: Grant
    Filed: May 10, 2006
    Date of Patent: October 15, 2013
    Assignee: Fujitsu Limited
    Inventors: Teruyoshi Watanabe, Hajime Hasegawa
  • Patent number: 8559361
    Abstract: A system, comprising: a first receiver of a baseband processor (BBP) configured to determine whether a signal includes a frame; a second receiver of a media access controller (MAC) configured to identify a destination address in the frame; a processor configured to selectively process the frame; and a power management module configured to transition each of the first receiver of the BBP, the second receiver of the MAC, and the processor to the active mode based on predetermined criteria.
    Type: Grant
    Filed: February 1, 2011
    Date of Patent: October 15, 2013
    Assignee: Marvell International Ltd.
    Inventors: Partho Mishra, Sandesh Goel
  • Patent number: 8560001
    Abstract: A base station apparatus includes a transmit diversity setting unit configured to set a transmit diversity mode to be applied to a user equipment terminal; a reception quality calculating unit configured to determine reception quality corresponding to the transmit diversity mode based on the transmit diversity mode set by the transmit diversity setting unit; a scheduling unit configured to determine a user equipment terminal to which a radio resource is to be allocated based on the reception quality determined by the reception quality calculating unit; and a notifying unit configured to notify the user equipment terminal to which the radio resource is allocated as determined by the scheduling unit of the transmit diversity mode to be applied.
    Type: Grant
    Filed: April 23, 2009
    Date of Patent: October 15, 2013
    Assignee: NTT DoCoMo, Inc.
    Inventors: Hiroyuki Kawai, Akihito Morimoto, Hidekazu Taoka, Mamoru Sawahashi
  • Patent number: 8559360
    Abstract: A method and apparatus for controlling power for uplink are provided. When a base station is moving or unable to communicate with others, at least one interference amount is estimated for a neighboring base station based on a path gain between a terminal and the neighboring base station and a transmission power of each encoding packet size and transmission format included in a candidate group related to scheduling transmission power parameters. A target interference amount is determined based on an interference amount control value and an initial target interference amount according to a processing load of a serving base station, and one interference amount is selected from estimated interference amounts based on the target interference amount. The terminal determines the transmission power based on an encoding packet size and a transmission format corresponding to the selected interference amount.
    Type: Grant
    Filed: December 10, 2010
    Date of Patent: October 15, 2013
    Assignees: Samsung Electronics Co., Ltd., Electronics and Telecommunications Research Institute
    Inventors: Hyun-Jae Kim, Sung Cheol Chang, Sung Kyung Kim, Won-Ik Kim, Chul Sik Yoon
  • Patent number: 8559406
    Abstract: A method and apparatus provides for efficient data rate control and power control processes by transmitting a primary and a secondary pilot channel associated with a data channel. The primary and secondary pilot channels are used for decoding the data. A ratio of power levels of the primary and secondary pilot channels is based on at least one of the data rate and payload size of the data channel. The power level of the primary pilot channel is maintained independent of at least one of data rate and payload size of the data channel. The power level of the secondary pilot channel may be adjusted based on at least one of data rate and payload size of the data channel.
    Type: Grant
    Filed: June 3, 2003
    Date of Patent: October 15, 2013
    Assignee: QUALCOMM Incorporated
    Inventors: Stein A. Lundby, Joseph P. Odenwalder
  • Patent number: 8559889
    Abstract: Systems and methodologies are described that facilitate utilizing power control preambles with closed loop power control techniques in a wireless communication environment. An uplink grant can be transferred over a downlink (e.g., a first uplink grant after uplink inactivity), and a power control preamble can be sent over an uplink in response to the uplink grant. According to an example, transmission of the power control preamble can be explicitly scheduled and/or implicitly scheduled. The power control preamble can be transmitted at a power level determined by an access terminal utilizing an open loop power control mechanism. A base station can analyze the power control preamble and generate a power control command based thereupon to correct the power level employed by the access terminal. The access terminal can thereafter utilize the power control command to adjust the power level for uplink data transmission.
    Type: Grant
    Filed: May 27, 2011
    Date of Patent: October 15, 2013
    Assignee: QUALCOMM Incorporated
    Inventors: Durga Prasad Malladi, Juan Montojo
  • Patent number: 8559358
    Abstract: The load on access points (APs) in wireless, local area networks (WLANs) is minimized using a number of methods and associated devices. One method minimizes the load of the most congested APs while a second balances the load on both congested and uncongested APs using an optimal min-max (priority) load balanced solution. The optimal solution is obtained without requiring complex modifications, among other things. Both methods include adjustments to the transmission power levels of AP beacon messages to reduce congestion, but do not require adjustments to the transmission power levels of AP data traffic channels.
    Type: Grant
    Filed: June 30, 2006
    Date of Patent: October 15, 2013
    Assignee: Alcatel Lucent
    Inventors: Yigal Bejerano, Seungjae Han
  • Patent number: 8559376
    Abstract: A method and an apparatus for determining transmission power are disclosed. A gain factor of an E-DPDCH in a compressed mode is determined according to the number of E-DPDCHs used for initial transmission of data; and the transmission power of the E-DPDCH is determined according to the gain factor of the E-DPDCH in compressed mode. As the gain factor of E-DPDCH in compressed mode is determined according to the number of the E-DPDCHs for initial transmission of data, the gain factor of the E-DPDCH in compressed mode can be determined accurately, and thus the transmit power of the E-DPDCH can be determined accurately according to the gain factor of the E-DPDCH. Therefore, the waste of transmit power of the E-DPDCH is reduced, and thus the system capacity is improved.
    Type: Grant
    Filed: July 31, 2012
    Date of Patent: October 15, 2013
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Weixin Wang, Xueli Ma, Zongjie Wang
  • Patent number: 8559999
    Abstract: A method and arrangement in a radio communication network for predicting channel quality on a downlink channel. A radio base station (RBS) transmits data on the downlink channel to one or more user equipments (UEs), each of which transmits a channel quality indicator to the RBS on an uplink channel. The RBS derives a needed downlink transmission power from the received channel quality indicator, and predicts a channel quality for a next downlink transmission based on the received channel quality indicator and the derived downlink transmission power.
    Type: Grant
    Filed: May 29, 2006
    Date of Patent: October 15, 2013
    Assignee: Telefonaktiebolaget LM Ericsson (Publ)
    Inventors: Rong Hu, Muhammad Kazmi, Hai Wang, Jonas Fröberg Olsson
  • Patent number: 8559359
    Abstract: Systems and methodologies are described that facilitate quality of service (QoS) differentiation and/or prioritization across a plurality of base stations included in wireless communication systems. The system can include components and/or devices that obtain resource allocations for cells controlled by a local base station, ascertains whether or not the resource allocations satisfy quality of service targets associated with data flows traversing through cells controlled by the local base station, and dispatches inter cell interference coordination indicators to remote base stations that have a proximate relationship defined by an X2 channel between the local base station and the remote base stations.
    Type: Grant
    Filed: April 28, 2009
    Date of Patent: October 15, 2013
    Assignee: QUALCOMM Incorporated
    Inventors: Christopher G. Lott, Amir Farajidana
  • Patent number: 8559997
    Abstract: There are provided a method for controlling communication of a radio terminal with a radio base station at transmission power granted by the radio base station at a request of the radio terminal to the radio base station. The radio terminal, allocates, during communication through an uplink data channel (E-DPDCH) at first transmission power granted by the radio base station, at least part of second transmission power of an uplink control channel (HS-DPCCH) to the uplink data channel (E-DPDCH) by controlling a transmission state of the uplink control channel (HS-DPCCH); and requests the radio base station to increase the first transmission power for the uplink data channel (E-DPDCH) in accordance with the allocating.
    Type: Grant
    Filed: December 19, 2007
    Date of Patent: October 15, 2013
    Assignee: Fujitsu Limited
    Inventors: Keiji Nibe, Kentaro Fukushima
  • Patent number: 8554260
    Abstract: A communication system includes a first network device and a second network device. A power consumption control method applied to the communication system includes the steps of: checking a receiving capability of the first network device to generate a first checking result; and selectively notifying the second network device to adjust a transmitting capability of the second network device according to the first checking result. When the first checking result indicates that the receiving capability of the first network device is greater than a first threshold, transmit a first notice signal to notify the second network device. When receiving the first notice signal, lower the transmitting capability of the second network device.
    Type: Grant
    Filed: March 18, 2010
    Date of Patent: October 8, 2013
    Assignee: Realtek Semiconductor Corp.
    Inventors: Liang-Wei Huang, Ta-Chin Tseng, Ting-Fa Yu, Li-Wei Fang
  • Patent number: 8554259
    Abstract: A method and apparatus to improve the robustness of a wireless communication link between a base station and a mobile communication device. The method increases power selectively on portions of an uplink communication signal transmitted from the mobile communication device to the base station. The method monitors a quality metric value at the mobile communication device and sets the transmit power level of the first portion of an uplink communication signal to the first power level, if the monitored quality metric value is in a first range of quality values, or sets the transmit power level of the first portion of the uplink communication signal to a second power level, if the monitored quality metric value is in a second range of quality values. The first portion of the uplink communication signal includes control signals used by a base station to maintain connection of the wireless communication link.
    Type: Grant
    Filed: February 10, 2010
    Date of Patent: October 8, 2013
    Assignee: Apple Inc.
    Inventors: Venkatasubramanian Ramasamy, Giri Prassad Deivasigamani, Srinivasan Vasudevan, Mohit Narang, Longda Xing, Johnson O. Sebeni
  • Patent number: 8554257
    Abstract: Within a cell area, an RBS typically provides communication services to UEs. During operation, the UE adjusts its transmission power according to a transmission parameter value such as the E-TFCI. The RBS provides a predetermined number of reference points for E-TFCI that covers the limited range. For any intermediate values not specifically provided, the UE calculates the SIR through interpolation. The RBS predicts a range of transmission power likely to be used by the UE and provides the reference points based on the prediction. The prediction is performed based on operational measurement.
    Type: Grant
    Filed: August 13, 2008
    Date of Patent: October 8, 2013
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Hans Hannu, Märten Ericson, Peter Ökvist
  • Patent number: 8548383
    Abstract: Systems and methodologies are described that facilitate adjusting power spectrum density (PSD) for wireless devices according to multiple possible step sizes. A step size for an adjustment can be selected based at least in part on a received overload indicator from one or more access points, a PSD required to achieve a target signal-to-interference-and-noise ratio (SINR) for a wireless device, and a PSD previously assigned to the wireless device. Once the step size is selected, it can be applied to the previous PSD to generate a new PSD for the wireless device, and the wireless device can accordingly adjust PSD to mitigate inter-cell interference with the one or more access points.
    Type: Grant
    Filed: August 26, 2009
    Date of Patent: October 1, 2013
    Assignee: QUALCOMM Incorporated
    Inventors: Xiliang Luo, Rashid Ahmed Akbar Attar, Christopher Gerard Lott
  • Patent number: 8547897
    Abstract: A communication system and method that allows a transmitter segment (ground end of uplink segment) to dynamically combine power from a plurality of propagation channels (transponders) to improve power levels of signals being transmitted, without affecting the receiver segment (user end of downlink segment) and the propagation segment (space segment), and without modifying propagation apparatus configurations (satellite). Specifically, the transmitter segment generates mixtures of input signals by using Wavefront-Multiplexing and transmits wavefront-multiplexed (WFM) signals through propagation channels to a receiver segment that coherently separates the mixtures of received WFM signals by using adaptive equalization and Wavefront-De-Multiplexing.
    Type: Grant
    Filed: November 23, 2011
    Date of Patent: October 1, 2013
    Inventor: Donald C. D. Chang
  • Patent number: 8547898
    Abstract: An apparatus and method for estimating an absolute power level in a Multiple Users Reusing One Single time slot (MUROS) system are provided. The absolute value of power level of the MUROS user is received by the MUROS user from a Base Transceiver Station (BTS). The MUROS user also determines the mean value of its own signal strength. The absolute value of power level of the other user paired with the MUROS user is estimated using the received absolute value of power level of the MUROS user and the determined mean value of signal strength. The estimated absolute value of power level of the other user and the absolute value of power level of the MUROS user are further used by the MUROS user to estimate its channel. Information about the estimated channel of the MUROS user is provided to the BTS by the MUROS user and the BTS uses this information to allocate power to the two users which are paired for MUROS.
    Type: Grant
    Filed: February 4, 2010
    Date of Patent: October 1, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Satish Nanjunda Swamy Jamadagni, Sarvesha Anegundi Ganapathi
  • Patent number: 8548392
    Abstract: A communication device includes a receiver, a transmitter and an interruption module. The receiver receives an allocation signal indicating a first period usable by the communication device and a second period usable by a plurality of communication devices including the communication device. The transmitter transmits a transmission signal in the first period. If the transmission of the transmission signal is completed within the first period, the interruption module interrupts at least a part of power supply to the receiver in the second period. If the transmission of the transmission signal is not completed within the first period and directivity of radio waves used by a second communication device includes a direction of the communication device in a communication period allocated before the second period, the transmitter transmits the transmission signal in the second period.
    Type: Grant
    Filed: August 17, 2012
    Date of Patent: October 1, 2013
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Tetsu Nakajima, Tomoko Adachi, Kiyoshi Toshimitsu, Tatsuma Hirano, Yoriko Utsunomiya
  • Patent number: 8548375
    Abstract: A wireless repeater includes a gain control metric computation block to compute a gain control metric for use in controlling the variable gain of the repeater. The gain control metric is computed by downsampling the gain control input signal to the gain control metric computation block and also downsampling the computed correlation and normalization terms. The gain control metric may be further enhanced by filtering the computed metric values using linear or non-linear filtering.
    Type: Grant
    Filed: March 12, 2010
    Date of Patent: October 1, 2013
    Assignee: QUALCOMM Incorporated
    Inventors: Michael Mao Wang, Dhananjay Ashok Gore, Gwendolyn Denise Barriac
  • Patent number: 8543067
    Abstract: An exemplary embodiment of communication device includes a signal communication module, a first switch module, a processor, a second switch module, and a power amplifying module. The signal communication module, the first switch module, the processor, the second switch module, and the power amplifying module are electrically connected in series. The signal transceiver receives and sends a wireless communication signal. The first switch module and the second switch module are used for switching on corresponding receiving and sending paths of the wireless communication signal under the control of the processor. The power amplifying module is configured for amplifying and adjusting signal strength of the broadcast signal from the second switch module controlled by the processor.
    Type: Grant
    Filed: January 27, 2010
    Date of Patent: September 24, 2013
    Assignees: Shezhen Futaihong Precision Industry Co., Ltd., Chi Mei Communications Systems, Inc.
    Inventor: Jian-Yan Feng
  • Patent number: 8543154
    Abstract: Methods of reverse link power control are provided. A first example method includes first adjusting OFDMA transmission power based on first feedback signals during an OFDMA transmission and second adjusting OFDMA transmission power based on second feedback signals during periods between OFDMA transmissions. A second example method includes sending first power adjustment indicators based on measured OFDMA SINRs when receiving OFDMA transmissions from a mobile station and sending second power adjustment indicators based on estimated OFDMA SINRs when not receiving OFDMA transmissions from the mobile station. A third example method includes receiving a plurality of interference indicating signals from different base stations and determining whether to adjust a maximum transmit power threshold based on the plurality of interference indicating signals, the maximum transmit power threshold indicating the maximum permitted transmission power level below which transmissions are constrained.
    Type: Grant
    Filed: June 12, 2012
    Date of Patent: September 24, 2013
    Assignee: Alcatel Lucent
    Inventors: Suman Das, Shirish Nagaraj, Harish Viswanathan
  • Patent number: 8542609
    Abstract: This invention relates to multicast rate optimization, particularly a method for controlling an encoder (1) in a communications system (3) including a plurality of receivers (2). The method includes partitioning the receivers (2) into at least one cell, and associating each cell with a specific rate that may be used to transmit signals to a receiver (2). According to the inventive method, uncertainties in estimates of conditions of the communications system (3) are taken into account by modelling the conditions, such as the average distortion perceived by the receivers (2), as the outcome of a stochastic variable, thereby accounting for uncertainties in the estimates of the conditions of the communications system (3). The invention also relates to an encoder associated with the method.
    Type: Grant
    Filed: August 20, 2009
    Date of Patent: September 24, 2013
    Assignee: Google Inc.
    Inventor: Ermin Kozica
  • Patent number: 8543123
    Abstract: A method and apparatus for controlling inter-cell interference in an evolved Node-B for a cellular communication system with a frequency reuse factor of 1 are provided. The apparatus includes a bitmap generator for receiving scheduling information from evolved Node-Bs of a plurality of neighbor cells, and for generating scheduling information including its cell's bitmap information for the resource allocation using the received neighbor cells' scheduling information, and a scheduler for scheduling the resource allocation for UEs in its cell based on the scheduling information provided from the bitmap generator and power allocation information of the UEs in its cell.
    Type: Grant
    Filed: August 18, 2010
    Date of Patent: September 24, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: June Moon, Sung-Woo Park, Seung-Won Kang, Ho-Joong Kwon, Soon-Young Yoon
  • Patent number: 8538470
    Abstract: A reception-process manager of a call server writes, in a transfer-voice-data storage, voice data contained in a voice packet received from the transmitter terminal which has acquired the talk right. A transmission-process manager of the call server determines the next transmission interval of a voice packet for each receiver terminal on the basis of determination information received from the each receiver terminal. The transmission-process manager reads out the voice data in a size dependent on the determined transmission interval from the transfer-voice-data storage, generates voice packet containing the voice data for the each receiver terminal, and transmits the voice packet to the each receiver terminal. Thus, the voice-packet transmission interval can be changed for each receiver terminal without stopping voice-packet transmission.
    Type: Grant
    Filed: November 20, 2007
    Date of Patent: September 17, 2013
    Assignee: Fujitsu Limited
    Inventors: Takashi Ohno, Kenichi Horio, Masahide Noda, Jun Kakuta
  • Patent number: 8538473
    Abstract: A method and system for controlling the transmission power of at least one downlink (DL) enhanced uplink (EU) signaling channel such that enhanced dedicated channel (E-DCH) DL signaling is delivered efficiently and reliably. The system includes at least one wireless transmit/receive unit (WTRU), at least one Node-B and a radio network controller (RNC). At least one of the WTRU and the Node-B compute EU transmission failure statistics on the DL EU signaling channel and report the EU transmission failure statistics to the RNC. The RNC then adjusts a transmission power offset of the DL EU signaling channel to be used in determining transmission power level of the DL EU signaling channel at the Node-B based on the EU transmission failure statistics.
    Type: Grant
    Filed: June 29, 2012
    Date of Patent: September 17, 2013
    Assignee: InterDigital Technology Corporation
    Inventors: Guodong Zhang, Stephen E. Terry, Stephen G. Dick
  • Patent number: 8538384
    Abstract: A method and device for setting or maintaining a preferential condition for a mobile terminal. The method includes determining if the base station associated with the mobile terminal is involved in an inter cell interference coordination procedure, setting the preferential condition for the mobile terminal when the mobile terminal is in a communication through a base station not associated with the mobile terminal, if the base station associated with the mobile terminal is involved in an ICIC procedure, and not setting the preferential condition for the mobile terminal when the mobile terminal is in a communication with the remote telecommunication device through a base station not associated with the mobile terminal if the base station associated with the mobile terminal is not involved in an ICIC procedure.
    Type: Grant
    Filed: December 14, 2009
    Date of Patent: September 17, 2013
    Assignee: Mitsubishi Electric Corporation
    Inventors: Mourad Khanfouci, Herve Bonneville, Nicolas Gresset, Loic Brunel, David Mottier
  • Patent number: 8532689
    Abstract: The present invention relates to a cellular communication and addresses the problem of an LTE UE measuring downlink quality when the load in cell varies instantaneously and over a wide frequency spectrum. The UE lacks capacity to measure over frequency bandwidth and time needed to make a cell load measure with sufficient reliability for making a inter-cell handover or an inter RAT handover. The solution is the DL power transmitted in a narrow band of the carrier frequency is adjusted to reflect the total cell load. The total cell load is measured and averaged over time and made proportional to the frequency carrier bandwidth. The power may be controlled for specific time slots in the narrow frequency band for the terminal to measure on. This is advantageous because then the waste power needed for enabling the UE measured can be reduced and the extra interference caused by the invention be reduced.
    Type: Grant
    Filed: October 31, 2008
    Date of Patent: September 10, 2013
    Assignee: Telefonaktiebolaget L M Ericsson (publ)
    Inventor: Walter Muller
  • Patent number: 8532017
    Abstract: The present invention provides a method for long term evolution in 3GPP. More particularly, the transmission of transmission power control command signaling in a down link control channel to user equipment. The present invention also provides a method and apparatus for identifying a target user equipment for a transmission power control command. The transmission power control command for physical uplink control channel and for persistent physical uplink shared channel assignments is transmitted via a downlink control channel format 3.
    Type: Grant
    Filed: September 23, 2008
    Date of Patent: September 10, 2013
    Assignee: Nokia Corporation
    Inventors: Jussi Kustaa Ojala, Frank Frederiksen, Lars Erik Lindh, Jaakko Eero Samuli Visuri
  • Patent number: 8532688
    Abstract: A transmission power control method for controlling a transmission power of an E-RGCH for uplink user data transmitted from a cell controlled by a radio base station to a mobile station, includes: notifying, from a radio network controller to at least one radio base station controlling a first cell and a second cell, offsets between the transmission power of the E-RGCH and a transmission power of a DPCH, when a mobile station is performing a soft-handover with the first and second cell; determining, at the first cell, a transmission power of a first E-RGCH based on a notified offset, and transmitting the first E-RGCH to the mobile station using the determined transmission power; and determining, at the second cell, transmission power of a second E-RGCH based on a notified offset, and transmitting the second E-RGCH to the mobile station using the determined transmission power.
    Type: Grant
    Filed: December 22, 2009
    Date of Patent: September 10, 2013
    Assignee: NTT DoCoMo, Inc.
    Inventors: Masafumi Usuda, Anil Umesh
  • Patent number: 8526357
    Abstract: The present invention relates to methods and arrangements for handling unreliable scheduling grants in a WCDMA-communication system. A user equipment detects that a received scheduling grant is unreliable and adjust its serving grant based on that information. The user equipment is also able to report continuously received unreliable grants as an event to the network, allowing the network to adapt its operation to reduce the unreliable grants.
    Type: Grant
    Filed: May 18, 2005
    Date of Patent: September 3, 2013
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Muhammad Ali Kazmi, Walter Gerhard Alois Muller, Rutger Gustav Gillbert Andersson, Dirk Gerstenberger, Karl Olof Joakim Bergstrom, Stefan Parkvall
  • Patent number: 8527790
    Abstract: Power saving cannot be implemented in the adhoc mode by only the IEEE 802.11 standard. This is because communication partners mutually utilize the power save mode in the adhoc mode, and their states must always be managed. In the adhoc mode, the number of communication partners is not always one, and all stations which join a network are candidates, increasing the load of implementation. To solve this problem, a communication apparatus notifies a change to power save mode by an ATIM packet, RTS packet, or null packet. When the ATIM packet or RTS packet is transmitted, the communication apparatus can notify the partner of a change in mode regardless of whether the partner is in the power save mode. When the null packet is transmitted, the communication apparatus can rapidly notify the partner without waiting for any beacon.
    Type: Grant
    Filed: December 23, 2010
    Date of Patent: September 3, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masanori Nakahara, Hiroshi Mashimo, Kazutoshi Hara
  • Patent number: 8526989
    Abstract: A wireless communication control method includes the steps of transmitting data from a mobile station to a base station using a first resource assigned based on a first scheduling method, transmitting data from the mobile station to the base station using a second resource which is assigned based on a second scheduling method and is not used in the step of transmitting using the first resource, and instructing the base station to regulate use of the first resource in accordance with a second resource amount assigned as the second resource by a radio control station which controls use of resources in wireless communication for the base station, and a second resource usage as a ratio of a resource used in the step of transmitting using the second resource to the second resource amount. A wireless communication system and a radio control station are also disclosed.
    Type: Grant
    Filed: March 27, 2008
    Date of Patent: September 3, 2013
    Assignee: NEC Corporation
    Inventor: Motoki Morita
  • Patent number: 8521210
    Abstract: The present disclosure provides a transmission power control method for a physical uplink shared channel, including: when there is only uplink control information but no uplink shared channel data sent over the physical uplink shared channel, the transmission power of the physical uplink shared channel is set according to the total number of bits contained in a channel quality indication signaling and its corresponding cyclic redundancy check as well as an amplitude offset. The present disclosure also provides a transmission power control system for a physical uplink shared channel. The method and system described in the present disclosure can ensure the overall performance of a system.
    Type: Grant
    Filed: July 1, 2009
    Date of Patent: August 27, 2013
    Assignee: ZTE Corporation
    Inventors: Bo Dai, Peng Hao, Zhisong Zuo, Guanghui Yu, Jin Xu
  • Patent number: 8520694
    Abstract: Disclosed is a method and system in which a connection-release buffer is provided in a communication path over which data is transmitted between a computing device (such as a server) and a mobile station. Upon receiving a final packet, indicating that the server has no more data to send to the mobile station, the buffer operates to determine whether a set period of time has elapsed since the last application-data packet was either sent to or received from the mobile station. If so, the buffer retains the final packet until detecting that the mobile station is in connected mode, at which point the buffer forwards the final packet to the mobile station. If not, the buffer forwards the final packet to the mobile station without first buffering the final packet pending detection of the mobile station being in connected mode.
    Type: Grant
    Filed: July 31, 2009
    Date of Patent: August 27, 2013
    Assignee: Sprint Spectrum L.P.
    Inventor: Soshant Bali
  • Patent number: 8520586
    Abstract: Interference can impair communications of collocated wireless devices or wireless devices communicating in close proximity to each other. In implementations where the communications of one wireless device have a higher priority as compared to the communications of the other wireless device, the low priority communications should not impair or interfere with the high priority communications. Functionality can be implemented to control when the low priority wireless device transmits based on a current state (e.g., active/inactive) of the collocated high priority wireless device, a frequency separation between communication channels of the wireless devices, strengths of signals received by the wireless devices, etc. Transmit power of the low priority wireless device may be controlled so that the low priority communications do not impair the high priority communications.
    Type: Grant
    Filed: December 16, 2009
    Date of Patent: August 27, 2013
    Assignee: QUALCOMM Incorporated
    Inventors: Paul J. Husted, Praveen Dua
  • Patent number: 8520579
    Abstract: The invention relates to a method of globally balancing the transmit power in a cellular radio system with tight reuse of frequencies, to a central controller node, and to an access point that in combination with conventional power control schemes balances the downlink transmission power on reused frequencies in order to balance co-channel interference in a multi-cell environment. The power balancing scheme dynamically assigns a token to or takes a token away from an individual reused radio channel based on quality of, or based on transmission power in the channel. A token, if taken away from the channel, inhibits conventional power control thereby freezing the transmission power in the channel on its current power level. A token, if assigned or re-assigned to channel, re-assumes conventional power control thereby allowing dynamic variation of the transmission power in the channel in accordance with the conventional power control.
    Type: Grant
    Filed: December 22, 2005
    Date of Patent: August 27, 2013
    Assignee: Telefonaktiebolaget L M Ericsson (Publ)
    Inventors: Muhammad Kazmi, Jingyi Liao
  • Patent number: 8521214
    Abstract: A first amount of bandwidth is allocated to a first wireless device to send signal quality information to a base station. Based on a first indicator of wireless link conditions associated with the first wireless device, and a second indicator of wireless link conditions associated with a second wireless device, a second amount of bandwidth is allocated to the first wireless device to send signal quality information to the base station.
    Type: Grant
    Filed: May 18, 2012
    Date of Patent: August 27, 2013
    Assignee: Clearwire IP Holdings LLC
    Inventors: Sungki Park, Masoud Olfat, Dhaval Dipak Mehta
  • Patent number: 8521204
    Abstract: A method in a wireless communication transmitter including a baseband processor (310) that configures the transmitter for a particular signal configuration, and a headroom controller (350) for adjusting transmitter headroom based on the particular signal configuration. In one embodiment, the headroom is controlled based on a power metric, for example, a 3rd order polynomial or a peak to average ratio (PAR) metric, that is a function of the signal configuration. In another embodiment, the headroom is adjusted using information in a look up table.
    Type: Grant
    Filed: September 30, 2004
    Date of Patent: August 27, 2013
    Assignee: Motorola Mobility LLC
    Inventors: Armin W. Klomsdorf, Robert T. Love, Ernest Schirmann, Dale G. Schwent
  • Patent number: 8521213
    Abstract: Systems and methodologies are described that facilitate broadcasting an interference level and adjusting transmit power corresponding to a reverse link in accordance with the interference level. An interference indication can be broadcasted on a broadcast channel in a wireless communication system. In response to the broadcast, mobile devices can adjust transmit power on the reverse link based upon considerations of the interference level. Further, mobile devices can evaluate an initial set point of a transmit power level during periods of inactivity.
    Type: Grant
    Filed: May 3, 2012
    Date of Patent: August 27, 2013
    Assignee: QUALCOMM Incorporated
    Inventors: Tingfang Ji, Rajat Prakash, Alexei Gorokhov, Mohammad J. Borran, Arumugam Chendamarai Kannan
  • Patent number: RE44553
    Abstract: Apparatus, and an associated method, for facilitating operation of a radio communication system that provides for multi rate data communications, such as a CDMA 2000 system that provides for 1xEV-DV communication services. A supplemental pilot, or control, signal generator embodied at a mobile station generates a supplemental pilot, or control, signal that is sent on a newly defined supplemental pilot, or control, channel. As the data rates of data communicated upon a reverse supplemental channel changes, corresponding changes are made to the power level of the reverse supplemental pilot, or control, signal.
    Type: Grant
    Filed: July 13, 2012
    Date of Patent: October 22, 2013
    Assignee: Nokia Corporation
    Inventors: Zhouyue Pi, Zhigang Rong