Battery Saving Based On Received Signal Patents (Class 455/343.2)
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Patent number: 8005514Abstract: The present invention provides a field device whereby the device's additional information can be transmitted wirelessly without the need for battery replacement or external wiring. The present invention also provides a field device whereby the firmware of a wireless module in the field device can be developed at minimum cost and whereby it can be made easy to link the firmware to applications, such as an asset management system, on the host system side.Type: GrantFiled: October 25, 2005Date of Patent: August 23, 2011Assignee: Yokogawa Electric CorporationInventors: Yoji Saito, Takashi Nishijima
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Patent number: 8005453Abstract: A system and method in a client device (22) for controlling the power within the client device (22). The client device (22) has a network access device (30, 130), a programmable timer (48), and a controller (42). The network access device (30, 130) has at least a powered state and a power-off state. The programmable timer (48) operates the network access device (30, 130) in the powered state. The controller (42) is coupled to the programmable timer (48) and is capable of providing a time period for operating the network access device (30, 130) in the powered state. The controller (42) determines the time period based on a discontinuous reception (DRX) parameter obtained from the network access device (30, 130). The network access device (130) may include a transceiver. The network access device (30) may also include a transceiver and a controller. There are also methods of operating the client device (22) to control the power within the device.Type: GrantFiled: October 25, 2009Date of Patent: August 23, 2011Assignee: Continental Automotive Systems, Inc.Inventors: James A. Van Bosch, Robert F. D'Avello
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Patent number: 8004996Abstract: According to an embodiment of the invention, a mobile communication apparatus includes: a first processor; a second processor; an intermittent receiver that is operated using the first processor; and a timer processing unit that is operated using the first processor and the second processor and configured to determine a start time of an operation thereof by performing a time-out control based on a timer, wherein the timer processing unit sets the timer so that a time-out occurs at a given timing, to perform a first function to be started at the given timing, and wherein the timer processing unit sets the timer so that a time-out occurs at a time when the intermittent receiver is operated, to perform a second function to be started at an arbitrary timing.Type: GrantFiled: May 29, 2008Date of Patent: August 23, 2011Assignee: Fujitsu Toshiba Mobile Communications LimitedInventors: Takafumi Nakamura, Atsushi Wakayama
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Patent number: 7995508Abstract: Provided is a method of minimizing power consumed by each node in a wireless network when communicating with neighboring nodes. Unlike a conventional synchronous media access control (MAC), the present invention suggests an asynchronous MAC. Thus, the active duration of a node extends only when transmitting a large quantity of data and the extended active duration returns to the minimum active duration again after completing the data transmission.Type: GrantFiled: July 11, 2008Date of Patent: August 9, 2011Assignees: Electronics & Telecommunications Research Institute, Research Foundation of the City University of New YorkInventors: Jae Hong Ruy, Jong Suk Chae, Cheol Sig Pyo, Bong Soo Kim, Myung Jong Lee, Tae Rim Park
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Patent number: 7990901Abstract: A method performed by a mobile communication unit (10) when operating in stand-by mode in a wireless cellular communication network. The receiver is activated in periods of relatively short duration (?0) to receive paging indicators (21) from the serving base station (20) and to receive identifying signals from the remote base station (30). After the first period a likelihood is assessed that a remote cell has been detected, and following the first period the receiver is activated in a second period of a duration (?1) depending an the assessed likelihood. If a remote cell has likely been detected, the second duration is longer than the first duration. Most of its stand-by time the mobile terminal will not detect a new cell, and most of the periods with the receiver activated will therefore be of the short first duration, the Power consumption of the receiver will be correspondingly reduced, and the stand-by time is correspondingly increased.Type: GrantFiled: May 7, 2004Date of Patent: August 2, 2011Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Bengt Lindoff, Torgny Palenius, Anders Ericsson
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Patent number: 7991412Abstract: A wireless communication device has a plurality of antennas and has MIMO functions that receive a plurality of spatially multiplexed signal sets, perform an inverse matrix computation using SN ratios of the plurality of the signal sets, based on a transfer function of a transmission path of the plurality of the signal sets, decode a first encoded signal in which is encoded the plurality of the signal sets on which the inverse matrix computation was performed, and output a decoded signal. The wireless communication device includes an encoder that generates a second encoded signal by encoding the decoded signal and a control portion that, if one of the SN ratio and the difference between the first encoded signal and the second encoded signal does not meet a specified standard, shifts the wireless communication device to a reduced power consumption state in which the amount of electric power that is consumed is reduced.Type: GrantFiled: June 19, 2008Date of Patent: August 2, 2011Assignee: Sony CorporationInventor: Hiroaki Takahashi
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Patent number: 7991436Abstract: A method is provided for carrying out a power saving procedure in a wireless subscriber terminal which is operative to receive at least two different services, each of which is characterized by one or more characteristics related to traffic demands associated with that service. The method comprises the following steps: classifying each of the at least two different services based on their traffic demand related characteristics into corresponding power saving classes, where there are at least two different power saving classes associated with the at least two different services; for each of the power saving classes, determining required listening windows and required sleep windows; exchanging messages between the base station and the subscriber's device for synchronizing parameters for carrying out the power saving procedure.Type: GrantFiled: October 11, 2005Date of Patent: August 2, 2011Assignee: Alvarion Ltd.Inventor: Vladimir Yanover
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Patent number: 7986652Abstract: A system and method allows devices to send and receive packets while using power to do so in a manner that responds to events, such as receipt or other identification of different parameters that control how packets are sent and received.Type: GrantFiled: December 19, 2007Date of Patent: July 26, 2011Assignee: Cisco Technology, Inc.Inventors: Jonathan W Hui, David E Culler
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Patent number: 7986933Abstract: A method and system for wireless communications between base and mobile stations use reference signals transmitted from base stations prior transmission of data signals. The reference signals are used to determine propagation characteristics of communication channels between the base and mobile stations and optimize, in real time, parameters of receivers of the mobile stations for processing the following data signals. Applications of the invention include wireless communication systems compliant with OFDMA, 3GPP LTE, RFN-OFDMA, OFDM, TDMA, and the like communication protocols.Type: GrantFiled: March 19, 2007Date of Patent: July 26, 2011Assignee: Apple Inc.Inventors: Leo G. Dehner, James W. McCoy, Kevin B. Traylor
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Patent number: 7983204Abstract: A wireless communication device (200), including: a housing (210); a controller (220), the controller (220) configured to control the operations of the wireless communication device; memory (270) coupled to the controller (220); a transceiver (250) coupled to the controller (220), the transceiver (250) configured to send and receive wireless signals; the receive signal includes at least a control channel and a packet data channel, the control channel being configured to provide the modulation and encoding and/or decoding information necessary to process a subsequent packet of data received by the transceiver (250) or in preparation for transmission by the transceiver (250); a monitoring module (290) for monitoring the control channel and controlling a dynamic scaling module (295), the monitoring module (290) reads a parameter field from the control channel which is used to determine that the data message has certain processing needs meeting a certain threshold; the dynamic scaling module (295) is configured tType: GrantFiled: November 27, 2007Date of Patent: July 19, 2011Assignee: Motorola Mobility, Inc.Inventors: Li Su, Feng Qian, Brett L Robertson, Brian D Storm
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Patent number: 7983650Abstract: One embodiment of the invention provides a wireless communication device including: a wireless communication unit that wirelessly receives first power consumption information from a device, the first power consumption information including a plurality of data pieces, each data piece indicating power consumption in the device for processing a streaming data signal encoded in each of a plurality of encoding formats; an encoding format selection unit that selects one of the encoding formats for a data signal to be transmitted, based on the received first power consumption information; and an encoding controller that encodes the data signal to be transmitted in the encoding format selected by the encoding format selection unit to generate an encoded data signal as a streaming data and outputs the encoded data signal to the wireless communication unit, wherein the wireless communication unit wirelessly transmits the encoded data signal as the streaming data to the device.Type: GrantFiled: March 26, 2007Date of Patent: July 19, 2011Assignee: Kabushiki Kaisha ToshibaInventor: Masaya Masuda
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Patent number: 7983621Abstract: Embodiments of sleep-mode statistics apparatus, systems, and methods are described generally herein. Other embodiments may be described and claimed.Type: GrantFiled: July 2, 2010Date of Patent: July 19, 2011Assignee: Intel CorporationInventor: Joey Chou
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Patent number: 7983651Abstract: A communication apparatus includes an image information acquisition unit configured to acquire new image information to be transmitted to a display terminal through a wireless access point, a storage unit configured to temporarily store the image information, a decision unit configured to decide to change a state of a wireless communication processing unit of the display terminal from a power save state to a normal state when an amount of the image information stored in the storage unit is not less than a predetermined threshold value, a message generation unit configured to generate a change instruction message in response to decision of the decision unit, and a transmission unit configured to transmit the change instruction message to the display terminal through the wireless access point to instruct the display terminal to change the state of the wireless communication processing unit from the power save state to the normal state.Type: GrantFiled: February 5, 2008Date of Patent: July 19, 2011Assignee: Kabushiki Kaisha ToshibaInventors: Mika Minematsu, Yasuyuki Nishibayashi, Shinya Murai, Masataka Goto, Kensaku Yamaguchi
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Patent number: 7979049Abstract: A method and apparatus for controlling the power consumption of a receiver based on current operating conditions is described herein. A receiver according to the present invention applies a received signal to a variable filter. The received signal includes a desired in-band signal. Depending on the current operating conditions, the received signal may further include one or more unwanted out-of-band blocking signals. A filter controller controls one or more operating parameters of the variable filter to maintain the power ratio at the filter output of the power of the blocking signal(s) to the in-band signal at or below a desired level. In so doing, the present invention controls the receiver power consumption while still providing the desired receiver performance.Type: GrantFiled: March 28, 2008Date of Patent: July 12, 2011Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Filip Oredsson, Tony Petersson, Lars Sundström
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Patent number: 7979048Abstract: Image rejection factors are calibrated for a receiver circuit (106) during an initialization period. The image rejection factors are stored in a quasi non-volatile memory (124) associated with the receiver circuit (106). The quasi non-volatile memory (124) is powered from a first source (VDD A) during a first receiver mode and from a second source (VIO) during a second receiver mode.Type: GrantFiled: September 15, 2005Date of Patent: July 12, 2011Assignee: Silicon Laboratories Inc.Inventors: Donald A. Kerth, Brian D. Green, Augusto M. Marques
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Patent number: 7979097Abstract: A multimode wireless communication device comprising a Wi-Fi module, a cellular communication module, and an integrated power management module is described. The integrated power management module or power management means is configured to manage power for the Wi-Fi module and the cellular communications module. The integrated power management module comprises a Wi-Fi power save mode, a Wi-Fi sleep mode, a Wi-Fi power down mode, a cellular power save mode, and a cellular low power mode. In the Wi-Fi power save mode a timer switches the Wi-Fi module between a Wi-Fi power save awake state and a Wi-Fi power save sleep state.Type: GrantFiled: March 18, 2008Date of Patent: July 12, 2011Assignee: Kyocera CorporationInventor: Farooq S. Hussain
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Patent number: 7979098Abstract: A wireless network (100) includes a communications node (120) configured to periodically generate and transmit at least one reception definition. Each reception definition indicates a time and manner in which the node will operate to receive information messages.Type: GrantFiled: August 6, 2009Date of Patent: July 12, 2011Assignee: Tri-County Excelsior FounationInventor: Brig Barnum Elliott
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Patent number: 7979096Abstract: A system for conserving energy in a multi-node network (110) includes nodes (205) configured to organize themselves into tiers (305, 310, 315). The nodes (205) are further configured to produce a transmit/receive schedule at a first tier (310) in the network (110) and control the powering-on and powering-off of transmitters and receivers in nodes (205) in a tier adjacent (315) to the first tier (310) according to the transmit/receive schedule.Type: GrantFiled: October 16, 2008Date of Patent: July 12, 2011Assignee: Tri-County Excelsior FoundationInventors: Brig Barnum Elliott, David Spencer Pearson
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Patent number: 7966009Abstract: The present invention discloses a method for determining the working status of a wireless network communication device. The method includes determining the probe request or broadcast packet or any wireless packet with its destination address equal to this AP address, and then determining whether extending the time interval of signal transmission based on the detection result. Next, when the device does not receive the probe requests or broadcast packet or any wireless packet with its destination address equal to this AP address within the first predetermined interval, the wireless network communication device will switch to the idle mode. Further, the step of the present invention includes determining whether awakening or shutdown the wireless network communication device based on the result of the detection of the probe request or broadcast packet or any wireless packet with its destination address equal to this AP address within the second predetermined interval.Type: GrantFiled: December 19, 2006Date of Patent: June 21, 2011Assignee: ARCADYAN Technology CorporationInventor: Chih-Fang Lee
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Patent number: 7961659Abstract: A novel and useful apparatus for and method of improving idle connection state power consumption in wireless local area network (WLAN) system using variable Beacon data advertisements. The invention takes advantage of the fact that Beacon contents to not change significantly between consecutive messages. Access points determine the size of the variable portion of their Beacon messages and include this size information in a special Variable Beacon Data Information Element in the Beacon message itself. The station reads the contents of this information element and uses the size information to determine at what point it is able to abort the reception of the Beacon message and turn off it's receive radio thereby saving power.Type: GrantFiled: January 9, 2008Date of Patent: June 14, 2011Assignee: Texas Instruments IncorporatedInventor: Artur Zaks
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Patent number: 7962183Abstract: A novel and useful mechanism for regulating and managing the peak current consumption of the subsystems in a mobile handset device. The mechanism of the present invention is operative to limit the current consumption at any point in time to a predetermined level that is within the current handling capability of the power management system of the handheld device. The mechanism operates by having the high peak current subsystems advertise in advance their intention to initiate a current peak. An arbitration mechanism considers the advertisements or requests sent from interested subsystems and determines whether a subsystem is either granted permission to initiate or is blocked from initiating a peak current session.Type: GrantFiled: December 28, 2006Date of Patent: June 14, 2011Assignee: Texas Instruments IncorporatedInventor: Itay Sherman
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Patent number: 7957777Abstract: A system includes a host interface module and a power management module. The host interface module is configured to receive configuration information from a host processor of a wireless device. The configuration information indicates that the host processor is to (i) operate in a power save mode, and (ii) in response to the wireless device receiving data of a predetermined category from a wireless network, transition from the power save mode to an active mode. The power management module is configured to generate a first signal in response to the wireless device receiving data of the predetermined category from the wireless network. The first signal transitions the host processor from the power save mode to the active mode in which the host processor processes the data of the predetermined category.Type: GrantFiled: March 22, 2010Date of Patent: June 7, 2011Assignee: Marvell International Ltd.Inventors: Chuong Vu, Timothy Donovan, Kapil Chhabra, Sandesh Goel
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Patent number: 7957758Abstract: A method of decoding data comprising a plurality of data-bursts, comprising the steps of: i) receiving a first one of the data-bursts, ii) associating hypothesis data with the or each received data-bursts; iii) attempting to decode the data; and iv) if the decode is successful to power down the receiver, and if the decode is unsuccessful receiving a further one of the data-bursts and repeating steps ii) to iv), until all of the data has been received.Type: GrantFiled: June 13, 2007Date of Patent: June 7, 2011Assignee: Mediatek Inc.Inventors: Joern Soerensen, Carsten Griem, Carsten Pedersen
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Patent number: 7957775Abstract: A low battery notification service is provided to a user of a wireless device capable of monitoring the voltage level of its internal battery and sending a low battery warning message. The messages are received at a service provider that maintains subscriber profiles associated with a subscriber's wireless device. When a low battery warning message is received, a wireless device identifier in the warning message is used to access a notification list included in a stored subscriber profile. Notification list entries are selected based on their assigned priorities and the existence or absence of conditions of use, permitting low battery notifications to be sent to target systems on the notification list until an acceptable response is received or the notification list is exhausted.Type: GrantFiled: November 5, 2007Date of Patent: June 7, 2011Assignee: International Business Machines CorporationInventors: Lloyd W. Allen, Jr., Jana Helton Jenkins, Steven Michael Miller
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Patent number: 7953385Abstract: A method and system to determine when a wireless terminal has been paged by a servicing base station. An encoded paging burst is received on a paging channel and then decoded to produce a decoded paging burst. The decoded paging burst is processed to determine if it is a null page. When the encoded paging burst is a null page, subsequent processing operations scheduled to follow a later null page are rescheduled and immediately processed, allowing the wireless terminal to re-enter the sleep mode more quickly following the receipt of a subsequent paging burst.Type: GrantFiled: December 7, 2009Date of Patent: May 31, 2011Assignee: Broadcom CorporationInventors: Nelson R. Sollenberger, Ronish Patel, Kenneth L. Kasiske, Karl Paulsen, Zhijun (Nick) Gong
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Patent number: 7949317Abstract: A method for communicating data using a “burst protocol” includes enabling power to transmitters and receivers when needed to balance power consumption with latency and unscheduled communication. A transmitter transmits a plurality of packets indicative of substantially the same payload. Power then may be disabled to the transmitter. A first predetermined time is determined to enable a receiver. A second predetermined time is determined to disable the receiver. Power then may be enabled to the receiver based on the first predetermined time. The payload is output in response to receiving one or more of the plurality of packets. Power to the receiver is disabled based on the second predetermined time.Type: GrantFiled: February 13, 2008Date of Patent: May 24, 2011Assignee: Apple Inc.Inventors: Scott Krueger, Gregory Lydon
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Patent number: 7945234Abstract: Operating a communication device in a half-duplex mode using only overhead channels; and substantially free running a timing reference obtained during reception to allow a timing reference value to drift during transmission.Type: GrantFiled: February 16, 2006Date of Patent: May 17, 2011Assignee: QUALCOMM IncorporatedInventors: Chong U. Lee, Alejandro R. Holcman, Arik Mimran, Jack Keil Wolf, Leonid Sheynblat, Roberto Padovani, Paul E. Bender, Ramin Rezaiifar, Samir K. Khazaka
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Patent number: 7937120Abstract: An embodiment of the present invention provides a method, comprising reducing power consumption in a wireless device by adapting the bias current of active devices in the apparatus to the RF carrier frequency of the wireless device.Type: GrantFiled: April 21, 2007Date of Patent: May 3, 2011Assignee: Paratek Microwave, Inc.Inventor: Guillaume Blin
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Method and apparatus for executing scanning at a mobile station for broadband wireless access system
Patent number: 7933603Abstract: The primitives between an upper management layer and the MAC layer within a mobile station and a base station are defined in order to specify and clarify the operations within the protocol stack layers in a broadband wireless access system to allow a mobile station to perform scanning procedures. Media Independent Handover (MIH) procedures can be achieved because the NCMS and MIH layer can communicate through use of these primitives.Type: GrantFiled: February 3, 2009Date of Patent: April 26, 2011Assignee: LG Electronics Inc.Inventors: Yong-Ho Kim, Jin Lee, Yong-Won Kwak -
Patent number: 7933635Abstract: In a wireless local area network, a battery status of a mobile device is determined, battery status data based upon the battery status is generated, and a listen interval between a mobile device and an access point is adjusted based upon the battery status. Listen interval data is generated based upon the listen interval, an association request frame is wirelessly transmitted from the mobile device to the access point during the listen interval. The association request frame includes the battery status data and/or the listen interval data.Type: GrantFiled: December 11, 2006Date of Patent: April 26, 2011Assignee: LG Electronics Inc.Inventors: Jang Geun Oh, Jin Suk Lee
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Patent number: 7920498Abstract: A method of decoding a control channel in a wireless communication system is provided. In the method, a terminal calculates the number of sub-bursts to be used during a next decoding and positions of the sub-bursts, based on a signal-to-noise ratio of at least one of a first burst or a second burst. Then, the terminal compares the calculated number of sub-bursts with a reference value. When the calculated number of sub-bursts is greater than the reference value, the terminal does not receive more bursts or sub-bursts and instead enters into a sleep state. When the calculated number of sub-bursts is smaller than or equal to the reference value, the terminal receives and decodes only sub-bursts at the calculated positions.Type: GrantFiled: January 17, 2007Date of Patent: April 5, 2011Assignee: Samsung Electronics Co., Ltd.Inventors: Il-Yong Jong, Hee-Su Kim, Dong-Wook Seo, Gi-Bong Jeong
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Patent number: 7920504Abstract: According to various embodiments of the invention a device can announce broadcast traffic in a global access period. Thus, a destination can change its local communication window every global access period. By announcing a local communication window during a global access period it can be more likely that a source device in a network will receive the information because all devices should be active during the global access period. A device can awaken for its local communication window and during the local communication window a source device can schedule a transmission and transmit information to the device.Type: GrantFiled: February 6, 2007Date of Patent: April 5, 2011Assignee: Olympus CorporationInventors: Alaa Muqattash, Ghobad Heidari-Bateni
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Patent number: 7920838Abstract: A system and methods (300, 400) are disclosed for conserving energy in a multimode communication device (106). A system that incorporates teachings of the present disclosure may include, for example, a communication device having a multimode wireless transceiver (202) for accessing a plurality of wireless access technologies (103), and a controller (214) for managing operations of the multimode wireless transceiver. The controller is programmed to enable (300) scanning for a select one of the wireless access technologies when the communication device is near a known location of a wireless access point. An embodiment for a network management system (100) is also disclosed.Type: GrantFiled: December 14, 2009Date of Patent: April 5, 2011Assignee: AT&T Intellectual Property I, L.P.Inventors: Anil Doradla, David Wolter, J. Bradley Bridges
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Patent number: 7917121Abstract: The primitives between an upper management layer and the MAC layer within a mobile station and a base station are defined in order to specify and clarify the operations within the protocol stack layers in a broadband wireless access system to allow a mobile station to execute handover. Media Independent Handover (MIH) procedures can be achieved because the NCMS and MIH layer can communicate through use of these primitives.Type: GrantFiled: March 24, 2006Date of Patent: March 29, 2011Assignee: LG Electronics Inc.Inventors: Yong-Ho Kim, Jin Lee, Yong-Won Kwak
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Patent number: 7912443Abstract: The present invention teaches a communications system comprising a first communications device for receiving data and a wake up signal. The first communications device comprises an active mode of operation and a sleep mode of operation for reducing power consumption. Further, the system comprises means for switching the first communications device to and from sleep mode in response to receiving the wake up signal. Further, the system comprises a second communications device for transmitting data to the first device during its active mode, while transmitting the wake up signal to the first device during its sleep mode.Type: GrantFiled: August 22, 2007Date of Patent: March 22, 2011Assignee: Round Rock Research, LLCInventor: Robert R. Rotzoll
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Patent number: 7912518Abstract: Provided is a power saving method for a mobile terminal, of a WiBro communication system, particularly for a standby mode. A power saving method for a mobile terminal having a modem for communicating with a base station and a host for controlling the modem, includes starting, at the mobile terminal, a timer if a resource withdrawal is determined through a negotiation with the base station; turning off power to the modem; determining whether the timer has expired; and turning on the power to the modem.Type: GrantFiled: October 1, 2007Date of Patent: March 22, 2011Assignee: Samsung Electronics Co., LtdInventors: Rae-Jin Uh, Sung-Guk Na
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Patent number: 7912465Abstract: In a wireless device, active scanning for a particular wireless network name is initiated during passive scanning for a wireless network that matches a profile stored in a wireless local area network controller, the profile including the particular wireless network name. Active scanning for the particular wireless network name includes transmitting one or more probe requests, each transmitted on a different communication channel.Type: GrantFiled: March 24, 2005Date of Patent: March 22, 2011Assignee: Research In Motion LimitedInventors: Sherif Abdel-Kader, David Bajar, Yongsheng Chen
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Patent number: 7912442Abstract: The present invention teaches a communications system comprising a first communications device for receiving data and a wake up signal. The first communications device comprises an active mode of operation and a sleep mode of operation for reducing power consumption. Further, the system comprises means for switching the first communications device to and from sleep mode in response to receiving the wake up signal. Further, the system comprises a second communications device for transmitting data to the first device during its active mode, while transmitting the wake up signal to the first device during its sleep mode.Type: GrantFiled: November 9, 2006Date of Patent: March 22, 2011Assignee: Round Rock Research, LLCInventor: Robert R. Rotzoll
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Publication number: 20110065413Abstract: A signal receiver capable of operating in two modes: a normal mode for reception and decoding of signals and a detection mode for detecting the presence of signals, the signal receiver having: a functional unit that can operate in two manners: a first manner having relatively low power consumption and relatively poor accuracy and a second manner having relatively high power consumption and relatively high accuracy, and a controller for causing the functional unit to operate in the first manner when the receiver is in its detection mode and in the second manner when the receiver is in its normal mode.Type: ApplicationFiled: November 19, 2008Publication date: March 17, 2011Applicant: CAMBRIDGE SILICON RADIO LIMITEDInventor: Steven Mark Singer
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Patent number: 7907929Abstract: A communication apparatus uses a short range communication function for displaying a decrease of remaining battery power of a cellular phone that is in communication with the communication apparatus based on a report from the cellular phone when the remaining battery power decreases to a predetermined threshold.Type: GrantFiled: January 30, 2007Date of Patent: March 15, 2011Assignee: Denso CorporationInventor: Naoki Matsuda
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Patent number: 7903596Abstract: A wireless mesh network routes messages between a host computer and a plurality of field devices. The mesh network is synchronized to a global regular active schedule that defines active periods when messages can be transmitted or received by nodes of the network, and inactive periods when messages cannot be transmitted or received. Based upon messages to be sent by the host computer to selected field devices, the network is controlled to selectively maintain active those nodes required to route messages to the selected field devices. Those required nodes are maintained in an active state as long as communication with the selected field devices continues, while other nodes are allowed to return to a low power inactive state. When communication between the host computer and the selected field devices is no longer required, the entire network is allowed to enter the low power inactive state.Type: GrantFiled: January 11, 2007Date of Patent: March 8, 2011Inventors: Patrick M. Dobrowski, Eric R. Lovegren, Kelly M. Orth, Kyle L. Stotz
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Patent number: 7898994Abstract: A mobile computing device comprises a first microprocessor having a sleep mode and a wake mode and a second microprocessor configured for wireless communication. A communication port is configured to communicate data from the second processor to the first processor, wherein the second processor is configured to provide a wake signal to the first microprocessor and the first microprocessor is configured to open the communication port in response to the wake signal and to receive data from the second microprocessor through the communication port.Type: GrantFiled: December 5, 2006Date of Patent: March 1, 2011Assignee: Hewlett-Packard Development Company, L.P.Inventors: Wen Zhao, David Kammer, Mark T. Davis, Arun G. Mathias, Isabel Ge Mahe, Bennett Chan, Alex Yee Kit Ho
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Patent number: 7899418Abstract: A mobile device is equipped with a transmitting function to transmit data. When a power switch is turned off during data transmission, a transition is made to a transmission-during-power-off mode that continues data transmission. The transition to the transmission-during-power-off mode is performed when an inquiry is made on a screen as to whether transmission will be performed and “continue” is subsequently selected. In this mode, even when the mobile device with the power switch being turned off is carried around, data transmission is continued and data is recorded into a storage section of a home personal computer.Type: GrantFiled: February 21, 2007Date of Patent: March 1, 2011Assignee: FUJIFILM CorporationInventors: Eiji Ishiyama, Tsuneo Sato
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Patent number: 7894864Abstract: A system comprising a first communication device and a second communication device adapted to determine a property of communications between the first and second communication devices. The second communication device estimates a power level associated with the first communication device for a length of time determined according to the property.Type: GrantFiled: October 31, 2007Date of Patent: February 22, 2011Assignee: Texas Instruments IncorporatedInventors: Laurent Le Faucheur, Francois Goeusse, Paul Folacci
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Patent number: 7894841Abstract: A system and method for reducing call establishment delay in wireless network is provided, in which a network node establishes a call to a wireless terminal controlled by an AP via a sever. The wireless terminal notifies the server of its listen interval. In the power saving mode, the wireless terminal wakes up every listen interval and listen the beacon to check whether any buffered packet for it. When the wireless terminal learns from the beacon that there are packets waiting, it communicates with the access point to retrieve them. The server records a listen time at which the wireless terminal will wake tip and listen to the AP based on the listen interval. When a network node calls the wireless terminal, the server buffers the request for a time interval based on the listen time, and then sends the request to the wireless terminal.Type: GrantFiled: January 14, 2009Date of Patent: February 22, 2011Assignee: Industrial Technology Research InstituteInventors: Tai-Xing Yu, Ting-Kai Hung, Hung-Chi Hsu, Shiao-Li Tsao
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Patent number: 7890148Abstract: A mobile station for a CDMA communication system which comprises a transmitting section that transmits a location registration request signal to a base station, and a receiving section that receives an acknowledge signal transmitted from the base station after the location registration request signal from the transmitting section is received by the base station. A control section prohibits the power supply to the receiving section for a predetermined period of time if the acknowledge signal from the base station is not received within a predetermined period of time after the location registration request signal has been transmitted.Type: GrantFiled: July 20, 2007Date of Patent: February 15, 2011Assignee: Fujitsu Toshiba Mobile Communications LimitedInventors: Masayuki Enoki, Kiyoshi Kawabata
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Patent number: 7889688Abstract: A radio communication apparatus has a battery, a transmit buffer for temporarily accumulating packets to be sent, a battery state monitoring unit for monitoring a battery state of the battery, and a traffic control unit. The traffic control unit determines a packet burst length and an interval time between the packet bursts in order to obtain charge recovery effect based on the battery state, and controls so as to take out data packets of the packet burst length from the transmit buffer for every interval time between the packet bursts of the packet burst.Type: GrantFiled: April 19, 2007Date of Patent: February 15, 2011Assignee: KDDI CorporationInventors: Takeshi Kitahara, Hajime Nakamura, Satoshi Konishi
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Publication number: 20110034144Abstract: A system and method for managing communication of a movable entity is provided. The system comprises a chargeable power source, at least one sensor unit which is connected with the movable entity, and a global positioning device which is powered by the chargeable power source and is connected with the movable entity, wherein the global positioning device is used to track moveable entity status in response to sensor data received from said at least one sensor unit, the global positioning device is configured to execute a power saving mode based on moveable entity status information. The system and method save electric energy consumption of a battery fro the GPS device by the mode switching between a sleep mode and a work mode, and judgment on the predetermined event provided may help to prevent the machine from being stolen.Type: ApplicationFiled: November 27, 2008Publication date: February 10, 2011Inventors: Gang Yang, Bin He, Kankan Zhang
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Patent number: 7881694Abstract: A wireless device (110) is provided for supporting extended battery life. A transceiver (132) is configured to receive and transmit data over a wireless link. A frame detection sensor (140) is coupled to the transceiver and configured to sense an incoming frame and generate an incoming frame sensor signal. A controller (142) is coupled to the frame detection sensor and transceiver, and configured to selectively deactivate a portion of the transceiver device based at least in part on the frame sensor signal. Advantages of the invention include the ability to extend battery life in mobile wireless devices.Type: GrantFiled: August 31, 2005Date of Patent: February 1, 2011Assignee: NXP B.V.Inventor: Olaf Hirsch
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Patent number: RE42604Abstract: A multimode transceiver circuit comprises a four port coupler of a type which splits a signal applied to one port between two of the other ports. The split signals are phase shifted by a known amount. A first port of the coupler is for receiving a signal and for outputting a signal therefrom. A controllable oscillator is connected to a second port of the coupler and switchable impedances (Schottky diodes) are connected to the remaining ports. A controller is provided for controlling the operation of the oscillator and the impedances to determine the mode of operation of the circuit. In one mode of operation, the oscillator is inoperative and at least one of the impedances is switched to operate as a non-linear impedance such that the circuit detects amplitude modulation of the signal applied to the first port.Type: GrantFiled: November 17, 2000Date of Patent: August 9, 2011Assignee: Mineral Lassen LLCInventors: Ian J. Forster, Adrian N. Farr, Norman A. Howard