Abstract: 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.

Abstract: Methods and apparatus are disclosed for operating a multi-mode wireless communications device to select a radio access technology (RAT) requiring the lowest energy consumption by the device for a desired operating mode. An exemplary method comprises scanning a plurality of frequency bands to determine a set of available radio access technologies that support the desired operating mode, and evaluating, for each available RAT, RAT-specific system parameters and RAT-specific operating conditions. Based on the evaluation, the RAT requiring the lowest energy consumption by the wireless device for the desired operating mode is selected.

Abstract: A LIN receiver includes a voltage divider that divides an input voltage and outputs the divided voltage, and a peak hold circuit that outputs a peak voltage of the input voltage. The LIN receiver is configured to generate a threshold voltage to be used for determining a voltage signal of a communication bus. The threshold voltage is generated from a voltage signal of the communication bus such that the peak value of the voltage signal (i.e., equivalent to a battery voltage) is held by the peak hold circuit and divided by the voltage divider. Although the communication bus is connected to an on-vehicle battery of which voltage varies with time, by using the voltage signal of the communication bus, a 5V system ECU can generate a threshold voltage which varies responding to the variation of the battery voltage. Hence, the voltage signal can be determined correctly as either high or low level.

Abstract: Proxy devices simultaneously support multiple modes of client device operation. Embodiments facilitate continued support of idle mode, proxy state operation of one or more client devices by a proxy device that is serving an active connected mode proxied client device. Paging message delivery from the proxy device to an idle mode proxied client device is facilitated by the proxy device monitoring a channel associated with the active connected mode proxied client device for a message (e.g., paging message) associated with the idle mode proxied client device.

Abstract: Systems and methods for dynamically controlling an analog-to-digital converter (ADC) in order to conserve power are provided. In exemplary embodiments, a receiver device comprises a tuner configured to receive a signal, at least one programmable analog-to-digital converter (ADC), and a digital signal processing hardware comprising a control logic. The exemplary control logic is configured to generate a control signal to configure components within the receiver device to conserve power at the ADC.

Abstract: Methods and apparatus for service acquisition in a broadcast system. In an aspect, a method includes detecting whether a loss of service has occurred, and initiating acquisition attempts during an aggressive acquisition phase if a loss of service has occurred, wherein a backoff time interval between successive acquisition attempts is constant or increased, and wherein the aggressive acquisition phase ends when service acquisition is achieved or a selected number of acquisition attempts have been performed. An apparatus includes interface logic configured to detect whether a loss of service has occurred, and processing logic configured to initiate acquisition attempts during an aggressive acquisition phase if a loss of service has occurred, wherein a backoff time interval between successive acquisition attempts is constant or increased, and wherein the aggressive acquisition phase ends when service acquisition is achieved or a selected number of acquisition attempts have been performed.

Abstract: A method for communicating to a recipient transceiver from a plurality of transceivers located within the broadcast range of the recipient transceiver includes: transmitting a communication at a first power level such that only a first group of transceivers receive the broadcast, the communication including a command causing each of the first group of transceivers not to respond to a subsequent broadcast; and subsequent thereto, transmitting a communication at a second power level greater than the first power level such that a second group of transceivers greater than and including the first group of transceivers receive the broadcast, but such that only a limited number of transceivers of the second group respond to the broadcast, the limited number of transceivers excluding the first group of transceivers. Each of the plurality of transceivers is associated with a respective sensor for acquiring data and transmitting the data to the recipient transceiver.

Abstract: A portable apparatus including a flat antenna apparatus is disclosed. The portable apparatus operates with a battery. The flat antenna apparatus includes an antenna element and a ground element, where the ground element is a surface of the battery.

Abstract: A biasing arrangement for an electronic apparatus having an input device connected by wires is disclosed. The biasing arrangement comprises a bias signal generator arranged to provide a bias voltage and a reference voltage; a flying capacitor circuitry having a first set of switches connected to said bias signal generator to selectively connecting and disconnecting the bias voltage and reference voltage, respectively, over a capacitor of the flying capacitor circuitry, and the flying capacitor circuitry further having a second set of switches to selectively connecting and disconnecting the voltage over the capacitor to an output of the flying capacitor circuitry, wherein the first and second sets of switches are not both in a connecting state at any time; and a wired connection between output of the flying capacitor circuitry and the input device of the apparatus. An electronic apparatus, a biasing method, and a computer program are also disclosed.

Abstract: Disclosed herein relates to a method and apparatus of sleep mode operation in a multi-carrier system.

Abstract: The electronic circuit includes: a micro controller unit; a timer operable to measure a standby time of the micro controller unit; a buffer circuit connected with an output-signal terminal of the timer; a logic circuit controlled by an output signal of the timer and an output signal of the micro controller unit; and a power-on switch controlled by the logic circuit. The buffer circuit has no protection diode connected with an input terminal thereof on a power-source side, and connected to a common power source shared with the micro controller unit. The switch is one for controlling the power source of the micro controller unit and buffer circuit. The micro controller unit is made to transition to an active state to either a standby state or a power-source cutoff state during the standby time.

Abstract: A mobile device configured to control power consumption includes operational modes for a first sleep mode, a second sleep mode, a third sleep mode, an idle mode, a calling mode, and an in-call mode. A controller receives an input or detects a condition and responsively performs operations including: when the mobile device is operative in the idle mode, transition the mobile device from the idle mode to the first sleep mode in response to receiving the input or detecting the condition, when the mobile device is operative in the calling mode, transition the mobile device from the calling mode to the second sleep mode in response to receiving the input or detecting the condition, or when the mobile device is operative in the in-call mode, transition the mobile device from the in-call mode to the third sleep mode in response to receiving the input or detecting the condition.

Abstract: A wireless transceiver includes: (a) a low power radio frequency (LPRF) communications component capable of powering down to conserve energy and capable of powering up in response to an electronic signal, the LPRF communications component including a transmitter and a first receiver; and (b) a second receiver that is configured to screen a radio frequency broadcast and provide, on the basis of specific data identified therein, the electronic signal to the LPRF communications component in order to power up the LPRF communications component. The second receiver is adapted to draw less current than the LPRF communications component while awaiting receipt of and listening for a radio frequency broadcast.

Abstract: A method and an apparatus that includes establishing a link (106) between a first node (102) and a second node (104) in a wireless communication network (100). The method continues by setting a discontinuous receive (DRX) transmission mode cycle for the link wherein the DRX cycle includes an on duration (202) followed by an off cycle (204). The duration of the on duration on a downlink is adjusted (610) based on a function of the availability of a channel quality indicator (CQI) channel used on the link.

Abstract: Briefly, in accordance with one or more embodiments, a subscriber station in sleep mode is capable of sending and/or receiving traffic during sleep mode without violating the delay requirements of best effort traffic. Moreover, a subscriber station is capable of remaining in sleep and may optionally only be awaken in the event there is data to be transmitted from the base station to the subscriber station and/or from the subscriber station to the base station. By implementing an always sleep and need based wake up arrangement, the power consumption of the subscriber station can be reduced.

Abstract: The receiver includes a low noise amplifier, a local signal generator, a first mixer, a second mixer, a first amplifier, a second amplifier, a first A/D converter, a second A/D converter, and a signal level detection unit. A detection signal from at least one terminal of the first A/D converter is supplied to an input terminal of the signal level detection unit, thereby generating a reception start signal from the output terminal. Before an RF reception signal is received, a first signal processing unit containing the first mixer, the first amplifier, and the first A/D converter is controlled to an active state, and a second signal processing unit containing the second mixer, the second amplifier, and the second A/D converter is controlled to a low power consumption state. After the RF reception signal is received, the second signal processing unit is controlled to the active state.

Abstract: 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 a method of connecting to the network. Media Independent Handover (MIH) procedures can be achieved because the NCMS and MIH layer can communicate through use of these primitives.

Abstract: A separable mobile terminal device includes a main module to execute main functions in order to drive a mobile terminal and a user module to inform a user of visual and aural elements. At least one of the main module and the user module has a control unit to determine whether to execute the interworking between the main module and the user module depending on whether the main module and the user module are connected and whether the interworking between the main module and the user module is required. Each of the main module and the user module has an interface unit to enable data transmission/reception between the modules, and a battery to supply driving power to each respective module. Each of the main module and the user module has a connection means, so that the main module and the user module can be connected with or separated from each other via the connection means.

Abstract: Systems and methods for managing power consumption in a device include toggling an ON-OFF setting of apparatus, which controls a carrier detector. The toggling is carried out according to a first duty cycle having a fixed OFF-time duration and a first dwell time having a first dwell time duration during which the carrier detector performs radio frequency carrier detection function. The device receives at least one input that affects the radio frequency carrier detection function, and the first duty cycle is changed to a second duty cycle. The toggling is carried out according to the second duty cycle, which has the same fixed OFF-time duration of the first duty cycle and a second dwell time having a second dwell time duration that is longer than the first dwell time duration, during which the radio frequency carrier detection function is performed.

Abstract: An access gateway comprises a processor. The processor is operable to determine a message type of a received packet. The processor is further operable to apply a paging rule. The paging rule is related at least in part to the message type of the received packet. The processor is further operable to determine whether to send a request to transition the mobile device to an active state based on the paging rule. The processor is further operable to send a request, when appropriate, to transition the mobile device to an active state.

Abstract: Disclosed is a sleep mode in a broadband wireless access system, more particularly a method of transmitting and receiving a message associated with a sleep mode in a broadband wireless access system. The method of transmitting a message associated with a sleep mode in a broadband wireless access system includes transmitting a first message which includes a flag if a receiving side receives the first message associated with the sleep mode, the flag indicating that the receiving side transmits an acknowledgement signal to a transmitting side, and receiving the acknowledgement signal from the receiving side which has received the first message.

Abstract: The present invention relates to a method and arrangements for saving battery power consumption of a UE in mobile telecommunication system. The method comprises the step of checking whether the UE fulfills at least one of the pre-determined criteria that a subscriber explicitly requests to receive paging at extended DRX cycle and that a new cell is not reselected during a pre-determined time. If the at least one of the pre-determined criteria is fulfilled the step of applying an extended DRX cycle is performed.

Abstract: A method and system for stateful negotiation of energy efficient parameters in Layer 2 are provided. In this regard, energy efficiency of communications between a first network device and a second network device may be managed via an exchange of information between the network devices and a verification of whether the information is up-to-date prior to utilizing the information. In various embodiments of the invention, the second network device may generate a decision pertaining to implementing one or more energy efficient techniques and the second network device may send a message to the first network device requesting that the first network device implement the decision. The message sent to the first network device may comprise the decision as well as parameter values utilized to generate the decision. The first network device may receive the decision and the parameter values and may determine whether the received parameter values are up-to-date.

Abstract: An embodiment may include circuitry to be comprised in a node. The node may be communicatively coupled to a network and may include a host processor to execute at least one communication protocol-related process. The circuitry may determine, at least in part, whether to buffer, at least in part, at least one packet received from the network based at least in part upon whether a weighted moving average exceeds a first threshold and is less than a second threshold. The average may be determined based at least in part upon one or more time intervals between one or more packet receptions from the network. Many alternatives, variations, and modifications are possible.

Abstract: Various embodiments are described herein for a mobile communication device that utilizes a smart battery. The mobile device includes a main processor for controlling the operation of the mobile communication device. The smart battery is coupled to the main processor and provides supply power. The smart battery includes a battery processor for controlling the operation of the smart battery and communicating with the main processor, and a battery module having one or more batteries for providing the supply power. A battery interface is provided for coupling between the main processor and the battery processor for providing communication therebetween. The battery interface comprises a data communication line and protection circuitry for protecting the main processor from electrostatic discharge. A communication protocol is also provided for communication between the main processor and the battery processor.

Abstract: A system and method allows devices to send and receive packets while using power to do so to the extent needed, thereby conserving power.

Abstract: A method of 2-way data and voice communication with a user utilizing a portable device having a cellular transceiver module, a GPS module and an emergency call button is disclosed. The method includes determining whether the portable device is in proximity of the base station; powering down the GPS, placing the portable device into sleep mode and sending a signal to the base station indicating that said portable device is in proximity of the base station when the portable device is in proximity to the base station; and activating and fully powering the cellular transceiver module and activating and fully powering said GPS module when the portable device is not in proximity of said base station.

Abstract: A method and apparatus for performing a Discontinuous Reception (DRX) operation of a connected User Equipment (UE) in a mobile communication system are provided. For a packet service, adjusting an active period length according to the requirements of traffic at a reception time provides a DRX operation. Also, the UE enters into a sleep mode after confirming successful reception of packets including retransmission packets and sending an RLC ACK signal for the packets.

Abstract: A first device communicates with a wireless network that includes nodes that are active for predefined activation times and that are at least partially dormant when not active. The communication method includes identifying a start of communication via a message that exceeds a maximum activation time of nodes on the wireless network by a factor N, where N is equal to at least a maximum number of frequencies on the wireless network, and exchanging information with a second device comprising a node on the wireless network that is within a transmission range of the first device, where the information is exchanged following the message and includes frequency hopping data for the second device.

Abstract: A method, programmed medium and system are disclosed which provide for user-controlled management of power requirements for mobile devices. The system enables the user to determine and adjust power settings according to time-related goals set by the end user. The end user, in one example, may specify a goal in hours, minutes or a predetermined date/time and the power management function displays, for example, various combinations of power-down options on specific system devices which can be implemented to achieve power availability for the specified amount of time. The user is enabled to select which of the displayed combination power-down option schemes to implement in order to best suit the user's application requirements during the time frame in which the power-saving scheme will be implemented in order to maximize power-saving while still providing optimum functionality for the user's particular application.

Abstract: Methods of performing retransmissions in respect of communications, uplink and/or downlink, on semi-persistent resources are provided. Various embodiments include: the mobile device keeps its radio on for an additional period immediately following an awake period upon determining there will be a retransmission; the mobile device turning its radio on for an additional period separate and distinct from the awake period.

Abstract: A telecommunications network for mobile terminals, in particular a wireless LAN network, includes a plurality of network access points defining a network coverage area and each one associated with a respective transmission channel; at least one mobile terminal adapted to move inside the coverage area and configured for performing a transmission channels scanning; a terminal locating server, configured for determining a position in which the terminal must perform the scanning, for determining a set of channels adapted to be received in the position with predetermined transmission characteristics, and for communicating such set of channels to the mobile terminal, so that the scanning, for example, for tracking or handover purposes, can be performed on a limited number of channels, thereby increasing the useful time for providing telecommunication services.

Abstract: A method and a system for providing a push service in a wireless communication system adopting an Orthogonal Frequency Division Multiplexing (OFDM) scheme or an Orthogonal Frequency Division Multiple Access (OFDMA) scheme are provided. The method includes when receiving a message from another network or another messaging server, transmitting, at a messaging server, a push service request message to a push server; when a Mobile Station (MS) of which the push service is requested using the push service request message of the messaging server, operates in an awake mode, transmitting, at the push server, a first push deliver message comprising a message designated for the MS, to a Base Station (BS), and when receiving the first push deliver message, transmitting, at the BS, a second push deliver message based on a Media Access Control (MAC) layer comprising the message designated for the MS, to the MS.

Abstract: A receiving module, checking module, and a controller are provided. The receiving module is configured for receiving external wireless signals. The checking module is configured for checking whether a current wireless signal comprises checking codes of a control signal which is configured for controlling the electronic device and, if yes, generating an activation signal. The controller is configured for switching the electronic device into a power-saving mode if no external wireless signal is received after a predetermined time period and switching the electronic device into a normal mode if the activation signal is received.

Abstract: Mobile User Equipment (UE) is operated in a first mode in which radio functions are enabled. In response to a predetermined condition, the UE is operated in a power saving mode involving disabling all radio functionality for a first period of time during which no connection is maintained with a cellular communication system serving node. After the first period of time, the UE ascertains whether any attempts were made to contact it during the first period of time and if so whether any of the attempted contacts is characterized by an attribute that matches a predefined attribute. If any of the attempted contacts is characterized by the attribute that matches the predefined attribute, then a user alarm is activated. If the response to the user alarm has been made, then the UE is again operated in the first mode; otherwise, the UE is again operated in the power saving mode.

Abstract: A wireless LAN communication device is provided for making it possible to set beacons including DTIM information elements not to be synchronous in the case that the timing for generating the beacons including DTIM information elements is the same among access points, so that it is avoidable that only a terminal device under a specific access point among access points using the same channel is subjected to a delay and jitters, while anxiety about mutual interference of the terminal devices is removed in the case of broadcast and multicast service, so that a fair broadcast and multicast service can be received. In the device, a wireless LAN control unit (202) detects beacons of other stations received in a prescribed period of time before the transmission of its own station (200). A beacon analyzing unit (203) analyzes the beacons of the other stations and adjusts transmission intervals of its own DTIM beacon.

Abstract: A mobile phone and a status control method adapted for the mobile phone are provided. The mobile phone communicates with a wireless network, such as GPRS. The mobile phone includes a data reception unit, a processing unit, and a storage unit. The processing unit records a start time and a stop time of each event which defines the running of an application program when data reception unit transfers data packet of the application program, and calculates an average interval time of the application program, and stores the average interval time. When a waiting time reaches the average interval time of the application program in the ready state, the mobile phone enters the standby state in advance, and thus the mobile phone does not need send updated location information to the SGSN and saves a lot of power.

Abstract: Techniques to manage power based on motion detection are described. For example, a mobile computing device may include a radio module having a communications failure event detector operative to detect a communications failure event, a motion detector operative to detect motion, and a processor coupled to the radio module and the motion detector. The processor operative to execute a scan control module to determine the mobile computing device is moving or stationary, and control scanning operations by the radio module in accordance with the determination. Other embodiments are described and claimed.

Abstract: Techniques for detecting other stations in a power efficient manner are described. A station may operate in a passive mode or a search mode. In the passive mode, the station receives for one receive period in each time interval. In the search mode, the station transmits for a series of transmit periods in one time interval, then receives for one receive period in the next time interval, and repeats the transmit/receive cycle. In an example scenario, station A operates in the search mode and sends a series of transmissions during its transmit periods. Station B operates in the passive mode, receives a transmission from station A during its receive period, switches to the search mode, and sends a series of transmissions for one time interval. Station A receives a transmission from station B during its receive period. After detecting one another, stations A and B may perform synchronization.

Abstract: A dynamic voltage scaling system for a packet-based data communication transceiver includes a constant voltage supply, a variable voltage supply, and a voltage control unit. The constant voltage supply is configured to supply a constant voltage to at least one parameter-independent function of the transceiver, and the variable voltage supply is configured to supply a variable voltage in accordance with a control signal to at least one parameter-dependent function of the transceiver. Parameter-independent transceiver functions perform operations independent of a predetermined parameter and parameter-dependent transceiver functions perform operations dependent on the predetermined parameter The voltage control unit is configured to generate the control signal based on information provided by at least one parameter-independent transceiver function about the predetermined parameter.

Abstract: Techniques for use in a mobile device involve detecting a temperature condition at said device and, in response, operating in a limited communication state for which only emergency communication is permitted. When the mobile device receives a user-initiated communication request, the mobile device inhibits non-emergency communication but permits emergency communication despite the existence of said temperature condition.

Abstract: A method and an apparatus for determining transmit power are disclosed. The method includes: determining an E-DPDCH gain factor in compressed mode according to the number of E-DPDCH required for initial transmission of data; and determining transmit power of E-DPDCH according to the E-DPDCH gain factor in compressed mode. The E-DPDCH gain factor in compressed mode is determined according to the number of E-DPDCH required for initial transmission of data, and therefore, the E-DPDCH gain factor in compressed mode is determined accurately, the transmit power of E-DPDCH is determined accurately according to the E-DPDCH gain factor, the waste of transmit power of E-DPDCH is reduced, and therefore the system capacity is improved.

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-DPDCH 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 E-DPDCH 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.

Abstract: Each of a plurality of network nodes in an ad hoc mesh network utilizes a data communication device that includes a two-way communications component, comprising a first receiver and transmitter, and a second receiver. The second receiver activates the communications component from a dormant state when it receives a broadcast including a wake-up identifier of the communication device.

Abstract: An apparatus and method for a power-efficient framework to maintain data synchronization of a mobile personal computer (MPC) are described. In one embodiment, the method includes the detection of a data synchronization wakeup event while the MPC is operating according to a sleep state. Subsequent to wakeup event, at least one system resource is disabled to provide a minimum number of system resources required to re-establish a network connection. In one embodiment, user data from a network server is synchronized on the MPC without user intervention; the mobile platform system resumes operation according to the sleep state. In one embodiment, a wakeup alarm is programmed according to a user history profile regarding received e-mails. In a further embodiment, data synchronizing involves disabling a display, and throttling the system processor to operate at a reduced frequency. Other embodiments are described and claimed.

Abstract: An integrated circuit chip includes an output node, receiver front ends, and control logic. The receiver front ends are configured to receive an input signal. Each of the receiver front ends is configured to receive the input signal and provide an output signal at the output node. At least one of the receiver front ends is configured to selectively consume less power. The control logic is configured to select the number of receiver front ends providing an output signal to the output node based on a received signal strength indication.

Abstract: A method and mobile device for decoding a paging message transmitted as multiple bursts in a wireless communication system are provided. In the method, only the first burst among four bursts of a transmitted paging message is received and equalized. The equalized first burst is compared (e.g., by computing correlation) with a reference paging message. The first comparison result value obtained from the first comparison is compared with a threshold value. If the first comparison result value is greater than the threshold value, second through fourth bursts of the paging message are not received, and a previous decoded paging message is output and a sleep state is entered. If the comparison result value is not greater than the threshold value, the second through fourth bursts are received and decoded, the decoded paging message is encoded, and a first burst of the encoded paging message is stored as the reference paging message.

Abstract: Methods and apparatus for optimizing idle mode stand-by time in wireless device operable in a multicast system are disclosed. In order to maximize or optimize the stand-by time for idle mode, a time line for decoding of overhead information symbol (OIS) data received in one or more superframes in the wireless device. Based on the determined time line, an offset time period can be determined for setting an idle mode timer period used by the wireless device to decode the OIS information. By offsetting the timer period, a wireless device can be ensured to wake up and prepared to latch OIS information before the start of a superframe boundary, thus minimizing the wake up time of the device operating in an idle mode and, in turn, optimizing stand-by time.

Abstract: Systems and methods for supporting variable beacon timing for a first wireless device and a second wireless device are provided. An exemplary system may include a number of wireless devices configured to wirelessly communicate with one another. The system includes a beacon-transmitting wireless device and a listening wireless device. The beacon-transmitting wireless device is configured to transmit, during a first operating mode, wireless beacons separated in time by relatively long time intervals. The beacon-transmitting device is also configured to transmit, during a second operating mode, wireless beacons separated in time by relatively short time intervals. The listening wireless device is configured to listen, during the first operating mode, for wireless beacons transmitted by the beacon-transmitting wireless device, and is configured to listen, during the second operating mode, for wireless beacons transmitted by the beacon-transmitting wireless device.

Abstract: 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.