Patent application number | Description | Published |
20090067355 | Power-Aware Link Adaptation in a Wideband CDMA System - Methods and apparatus are disclosed for reducing mobile terminal energy consumption during data transmissions by allocating link resources and adapting link parameters in an energy-aware manner, based on throughput requirements and prevailing channel conditions. A combination of transmit parameters that includes a transmit channelization scheme and is designed to minimize the total energy consumed during data transmission is selected based on a throughput requirement and one or more channel conditions associated with the data transmission. The channelization scheme includes a number of subchannels to be used and subchannel configuration parameters for each subchannel, such as spreading codes, spreading factors, and subchannel power levels. The combination of transmit parameters may also include a modulation format, coding scheme, and transmit power setting, as well as parameters relating to multiple-antenna transmit schemes. | 03-12-2009 |
20090067542 | Method and Device for Communicating Incremental Broadcast Information - This invention relates to a system, terminals, and a method of communicating broadcast information where broadcast information comprising at least two parts is transmitted to at least one communications terminal. The transmission comprises transmitting the broadcast information during at least a first time instance, and where the transmission further comprises transmitting incremental broadcast information during a time instance being different than the first time instance. In this way, by sending the broadcast information in increments, i.e. incrementally, it is ensured that terminals capable of it (due to better capabilities like higher information rate, greater bandwidth, etc. and/or due to better location like near the base station, having favorable propagation conditions, having line-of-sight to the base station, etc.) will receive the broadcast information more quickly and thereby faster can resume a “sleep” state (unless they are required to act in an active way upon the received broadcast information) without being limited by less complex or capable terminal or terminals under worst case conditions, as would otherwise be the case if the sending of broadcast information was designed to accommodate the worst or worse case situations. This saves power for the more capable and/or favorable placed terminals since the transceiver will be active for a shorter amount of time to receive the same amount of broadcast information. | 03-12-2009 |
20090068969 | Power-Aware Selection of Radio Access Technology - 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. | 03-12-2009 |
20090069057 | Power-Aware Link Adaptation with Variable Bandwidth Allocation - Methods and apparatus are disclosed for reducing mobile terminal energy consumption during data transmissions by allocating resources and adapting link parameters in an energy-aware manner, based on throughput requirements and prevailing signal propagation conditions. A combination of transmit parameters designed to minimize the total energy consumed during data transmission is selected based on a throughput requirement and a path loss associated with a data transmission by a mobile terminal. The combination of transmit parameters includes a bandwidth allocation and may also include a modulation format, coding scheme, and transmit power setting, as well as parameters relating to multiple-antenna transmit schemes. The bandwidth allocation may correspond to a number of sub-carriers of an OFDM signal, or may correspond to a number of resource blocks in an SC-FDMA signal. | 03-12-2009 |
20090073870 | AUTOMATIC RE-CONNECTION OF A PREVIOUSLY LOST CONNECTION IN A FREQUENCY HOPPING COMMUNICATION SYSTEM - This disclosure relates to frequency hopping (FH) communication systems, such as Bluetooth. In particular, it relates to a substantially automatic recovery procedure for re-establishing a previously lost link or connection between a master unit and a slave unit in a frequency hopping communications system. Some embodiments of the disclosed invention relates to methods for recovery of a previously lost link or connection between two Bluetooth units in a Bluetooth Sniff mode. | 03-19-2009 |
20090141700 | TECHNIQUE FOR PERFORMING A RANDOM ACCESS PROCEDURE OVER A RADIO INTERFACE - The invention relates to a technique for performing a random access procedure over a radio interface, for example between a mobile terminal and a radio base station of a mobile network, A method aspect of the invention comprises the steps of transmitting a synchronization request for synchronization information; receiving synchronization information in response to the synchronization request; and transmitting, based on at least one transmission parameter adjusted in accordance with the synchronization information, a resource request for data transmission resources. | 06-04-2009 |
20090196209 | CODE KEYING IN A POWER SAVINGS MODE - A device may include logic to enter a power savings mode and wirelessly transmit a first synchronization packet to a remote device within a first transmission time slot in a first power savings cycle, the first synchronization packet including a code that is a member of a set consisting of a predetermined number of codes. In addition, the logic may be configured to sleep after transmitting the first synchronization packet to save energy, awake at a first receive time slot in the first power savings cycle, and receive a reply synchronization packet, the reply synchronization packet including a code is that is a member of the set from the remote device. The logic may be further configured to sleep until a start of a second power savings cycle that follows the first power savings cycle to save energy. | 08-06-2009 |
20090215450 | Technique for Performing a Random Access Procedure Over a Radio Interface - The invention relates to a technique of performing a random access procedure over a radio interface ( | 08-27-2009 |
20090268692 | METHOD AND DEVICE FOR COMMUNICATING A SIGNAL - A communication unit and a method for communicating at least one signal over a channel of a first channel type and at least one signal over a channel of a second channel type, which is different from the first channel type. The apparatus comprises a timer adapted to schedule a predetermined time period, during which interference due to simultaneous communication of signals over the channel of the first channel type and the channel of the second channel type is anticipated. Also, the apparatus comprises a processing unit adapted to apply, during the predetermined time period, an interference counteracting process for counteracting interference between any signal communicated over the channel of the first channel type and any signal communicated over the channel of the second channel type. The interference counteracting process comprises changing, during the predetermined time period, from a first to a second format for representing information transmitted over the channel of the first channel type, the second format being more robust than the first format. | 10-29-2009 |
20090295629 | Controlling satellite navigation receivers in response to low frequency electromagnetic signals - Methods of operating a satellite navigation system (SNS) receiver in a portable electronic device according to some embodiments include determining the presence or absence of a low frequency signal associated with power distribution lines, and disabling the SNS receiver in response to detecting the low frequency signal associated with power distribution lines. The methods may further include detecting weakening of a satellite navigation signal, and determining the presence or absence of a low frequency signal associated with power distribution lines may be performed in response to a detected weakening of the satellite navigation signal. Related devices are also disclosed. | 12-03-2009 |
20090296531 | Methods of Calibrating a Clock Using Multiple Clock Periods with a Single Counter and Related Devices and Methods - A method of calibrating a first clock signal using a second clock signal and a plurality of calibration periods may include generating incremented counter values at a counter responsive to edges of the second clock signal. For at least two of the plurality of calibration periods, an initial incremented counter value from the counter may be stored in memory at an initial edge of the first clock signal for the respective calibration period, a final incremented counter value may be stored in memory at a final edge of the clock signal for the respective calibration period, and the at least two of the plurality of calibration periods may be overlapping with different initial and final edges of the first clock signal. For each of the plurality of calibration periods, a number of edges of the second clock signal occurring during the respective calibration period may be determined using the initial and final incremented counter values stored in memory. A relationship between the first and second clock signals may be determined using a sum of a number of edges of the second clock signal occurring during each of the plurality of calibration periods and using a sum of a number of first clock signal cycles occurring during each of the plurality of calibration periods. | 12-03-2009 |
20090298420 | APPARATUS AND METHODS FOR TIME SYNCHRONIZATION OF WIRELESS AUDIO DATA STREAMS - A wireless audio data distribution system streams audio data from an audio source device to a plurality of speaker devices across a wireless communication network. The speaker devices synchronize the start of their decoding of received audio data and compensate for relative skew over time of internal clocks in response to occurrence of timing events that are defined relative to signaling from the wireless communication network. | 12-03-2009 |
20100009643 | REGULATING POWER DUTY CYCLE OF AN RF TRANSMITTER/RECEIVER RESPONSIVE TO DISTANCE MOVED - Various methods and associated wireless communication mobile terminals are provided that repetitively switch power on and off to a RF transmitter and/or to a RF transceiver, and that regulate the power duty cycle in response to movement of the associated communication terminal. Movement of the communication terminal may be sensed in response to an acceleration signal from an accelerometer, a position signal from a GPS receiver, a light level signal from an ambient light sensor, and/or a pressure level signal from a pressure sensor. | 01-14-2010 |
20100016022 | Methods and Apparatus for Providing Services Information with a Femtocell Wireless Base Station - A femtocell base station is configured to transmit site-specific services data to in-range wireless devices, using a common broadcast channel. The site-specific services data identifies available services including, but not limited to, alternate radio signals available in the vicinity, such as FM radio signals, wireless local-area network (WLAN) signals, and the like; location-related services, including the availability of location beacon signals and/or location assistance data for use in position determination using assisted-GPS technology; and physical resources available to the device user, such as printers, copy machines, vending services, and the like. An exemplary mobile station is configured to extract site-specific services data from the femtocell base station signal, and to access a second radio signal using the site-specific services data. In some embodiments, the second radio signal may comprise a low-power FM radio signal, a wireless local-area network (WLAN) signal, a location beacon, or a radio-navigation signal. | 01-21-2010 |
20100017438 | Adaptive Display for Enhancing Audio Playback - An audio playback device and method searches initiates a web search for images related to music or other audio files being played, downloads images from selected web pages returned by the search engine, and outputs one or more images from the selected web pages on a display to enhance the user's listening experience. | 01-21-2010 |
20100068996 | ELECTRONIC DEVICES AND METHODS THAT COMMUNICATE VIA TRANSFERJET AND NFC TRANSMITTER AND RECEIVER PAIRING - An electronic communication device includes a high-rate RF wireless transmitter circuit (e.g., a TransferJet transmitter circuit) and a low-rate magnetically coupled receiver circuit (e.g., a Near Field Communication receiver circuit). The high-rate RF wireless transmitter circuit transmits a block of data to another proximately located communication device via RF signals using a first RF communication protocol. The low-rate magnetically coupled receiver circuit receives a communication control signal from the other proximately located communication device via magnetic coupling thereto using a second protocol that is different from the first RF communication protocol, and responds to the communication control signal by selectively triggering the high-rate RF wireless transmitter circuit to transmit another block of data when available for transmission. | 03-18-2010 |
20100069005 | CONTROLLING THE DYNAMIC RANGE OF A RF RECEIVER CIRCUIT IN A WIRELESS COMMUNICATION TERMINAL TO REESTABLISH A LOST COMMUNICATION LINK - A wireless communication terminal includes a RF receiver circuit and a controller. The RF receiver circuit receives communication signals from another communication terminal through a wireless communication link when the communication signals are within a dynamic range of the RF receiver circuit. The controller controls the RF receiver circuit to temporarily increase the dynamic range of the RF receiver circuit in response to detecting an unexpected loss of the wireless communication link between the other communication terminal and the RF receiver circuit. The controller then controls the RF receiver circuit to decrease the dynamic range of the RF receiver circuit in response to detecting that the wireless communication link between the other communication terminal and the RF receiver circuit has been reestablished. | 03-18-2010 |
20100069014 | CONTROLLING ATTENUATION OF AN ANTENNA SIGNAL IN A COMMUNICATION TERMINAL TO REESTABLISH A LOST COMMUNICATION LINK - Some embodiments of the present invention are directed to methods of operating communication terminals. A wireless communication link is established between first and second communication terminals and communication signals are exchanged therebetween. The first communication terminal is controlled to continue over time to increase a power level at which it transmits communication signals to the second communication terminal in response to detecting loss of the wireless communication link and while continuing attempts to reestablish the communication link with the second communication terminal. The first communication terminal is further controlled, in response to detecting loss of the communication link, to increase a level of attenuation that it applies to communication signals from the second communication terminal, and to then more gradually decrease the level of attenuation over time in response to continuing attempts to reestablish the communication link with the second communication terminal. | 03-18-2010 |
20100069084 | METHOD FOR REDUCING INTRA-CELL INTERFERENCE BETWEEN CELL PHONES PERFORMING RANDOM ACCESS - A method in a network node in control of a cell in a cellular telecommunication network for reducing intra-cell interference between user equipments (UE) residing in said cell and performing random access (RA). The method comprises the steps of arranging groups of preamble sequences where the sequences within each group are orthogonal to each other, assigning one such group to the cell, from which group the UEs performing RA randomly selects a preamble, and assigning one or more additional group(s) of preamble sequences to said cell if the RACH or traffic load exceeds a certain threshold. The invention further relates to a radio network node in a cellular telecommunication system, capable of carrying out said method. | 03-18-2010 |
20100075600 | WIRELESS PICONETS, DEVICES AND METHODS THAT SELF-LEARN MULTI-FRAME SLOT PATTERNS - A first device in a short-range wireless piconet self-learns a multi-frame piconet pattern that is used by a second device as a result of a deferral that reduces or avoids simultaneous transmission and reception by two transceivers at the second device. The first device uses this self-learned multi-frame piconet pattern to selectively control transmitting and receiving by the first device. Power can thereby be conserved at the first device. Related devices, networks and methods are described. | 03-25-2010 |
20100112950 | WAKE-UP RADIO SYSTEM - Systems and methods may include a master device. The master device may include a wake-up transmitter to send a wake-up message to a slave device to wake-up the slave device. The master device may also include a short-range transmitter to communicate with the slave device once the slave device has been woken up. The master device may be a mobile phone that communicates with the slave device (e.g., Bluetooth accessory devices) over a Bluetooth network. | 05-06-2010 |
20100125218 | APPARATUS, METHOD, AND COMPUTER PROGRAM FOR DETECTING A PHYSIOLOGICAL MEASUREMENT FROM A PHYSIOLOGICAL SOUND SIGNAL - An apparatus is disclosed, comprising a speaker suitable to be applied at a user's ear and enabled to be supplied with an audio signal for rendering; a microphone arranged in vicinity of the speaker to acquire a sound signal from sounds present in the ear of the user; and a signal processor, wherein the signal processor is arranged to subtract the audio signal from the sound signal to provide a physiological sound signal, and the signal processor is further arranged to detect a physiological measurement from the physiological sound signal. A method and a computer program are also disclosed. | 05-20-2010 |
20100158174 | APPARATUS AND METHOD FOR INTERFERENCE MITIGATION - An apparatus in a wideband radio transceiver for mitigating interference between a wideband radio operating in a wide frequency band and a narrowband radio operating in a narrow frequency band within the wide frequency band. The effects of transmissions by the wideband radio on the narrowband radio are reduced by creating by the wideband radio, a transmitter notch of decreased transmit power centered at a frequency in the wide frequency band that is fixed in relation to the wideband carrier frequency. The wideband carrier frequency is then adjusted so that the transmitter notch is aligned with the second radio's narrow frequency band. The effects of transmissions by the narrowband radio on the wideband radio are reduced by creating by the wideband radio, a fixed receiver notch of decreased receiver gain in the wideband receiver, and aligning the narrowband signal with the fixed receiver notch. | 06-24-2010 |
20100232618 | WIRELESS AUDIO DATA DISTRIBUTION USING BROADCAST AND BIDIRECTIONAL COMMUNICATION CHANNELS - Embodiments include a method of communicating an audio stream from an audio source terminal to a plurality of speaker terminals. A broadcast channel is established for communication from an audio source terminal to a plurality of speaker terminals. A plurality of bidirectional point-to-point control channels are established for controlling wireless communications between the audio source terminal and the speaker terminals, where each of the point-to-point control channels interconnect the audio source terminal and a different one of the speaker terminals. An audio stream is transmitted as a sequence of blocks of audio data in messages from the audio source terminal through the broadcast channel for receipt by all of the speaker terminals. A quality of reception feedback message is received at the audio source terminal from individual ones of the speaker terminals through respective ones of the point-to-point control channels. The audio data messages are adapted for transmission from the audio source terminal through the broadcast channel in response to the quality of reception feedback message. | 09-16-2010 |
20100303185 | Methods of Operating Wireless Communications Devices Including Detecting Times of Receipt of Packets and Related Devices - A method of operating a wireless communications device may include determining a wake-up time for a receiver using a low frequency clock. Beginning at the wake-up time, the receiver may listen for reception of a packet transmitted from a remote device over a wireless interface. An actual time of reception of the packet transmitted from the remote device may be detected, and a new wake-up time for the receiver may be determined using the low frequency clock and the actual time of reception of the packet. | 12-02-2010 |
20110007781 | LOW POWER TRSS-DSSS HYBRID SYSTEM - A radio system may include a receiver configured for processing a received signal via a first path and a second path, wherein the first path may include a uni-directional radio receiver path and wherein the second path comprises a path that constitutes a receiver for a bi-directional radio. The first path and the second path may share one or more radio hardware components or may be separated components. | 01-13-2011 |
20110009059 | EXTENDED NETWORK COMMUNICATION SYSTEM - A radio system includes a server connected to a network, at least one bi-directional radio connected to the network and at least one uni-directional radio not connected to the at least one bi-directional radio and not connected to the server. A mobile device is configured to receive data from at least one uni-directional radio and communicate with at least one bi-directional radio. | 01-13-2011 |
20110087449 | Methods of Calibrating a Clock Using Multiple Clock Periods with a Single Counter and Related Devices and Methods - A method of calibrating a first clock signal using a second clock signal and a plurality of calibration periods may include generating incremented counter values at a counter responsive to edges of the second clock signal. For at least two of the plurality of calibration periods, an initial incremented counter value from the counter may be stored in memory at an initial edge of the first clock signal for the respective calibration period, a final incremented counter value may be stored in memory at a final edge of the clock signal for the respective calibration period, and the at least two of the plurality of calibration periods may be overlapping with different initial and final edges of the first clock signal. For each of the plurality of calibration periods, a number of edges of the second clock signal occurring during the respective calibration period may be determined using the initial and final incremented counter values stored in memory. A relationship between the first and second clock signals may be determined using a sum of a number of edges of the second clock signal occurring during each of the plurality of calibration periods and using a sum of a number of first clock signal cycles occurring during each of the plurality of calibration periods. | 04-14-2011 |
20110092160 | Mobile Device Using Low-Power Radio Link to Headset - A mobile communication device comprises a base unit and a headset in the form of a small, inconspicuous earpiece. The base unit includes a fully functional cellular transceiver and can transmit audio signals over a low power, unidirectional radio link to the headset. The headset unit comprises a unidirectional receiver for receiving audio signals from the base unit and an earphone for converting the audio signals into audible sounds that can be heard by the user. | 04-21-2011 |
20110110358 | STEREO BIT CLOCK TUNING - A source communication device includes a source network clock to control timing of communicating with other devices in a network, a source streaming clock associated with processing of audio or video data, a time stamp generator to generate a time stamp that includes a source network clock value and a source streaming clock value, and a time stamp insertion mechanism that incorporates the time stamp into a data unit that is to be transmitted to one of the other devices in the network. A sink communication device includes a sink network clock synchronized with the source network clock, a sink streaming clock associated with processing of audio or video data, and a sink time stamp mechanism to compare a sink streaming clock value with the source streaming clock value, and adjust the sink streaming clock based on the comparison. | 05-12-2011 |
20110142156 | MULTI-CHANNEL SIGNALING - A system includes a transmitter device that includes a transmitter baseband controller to segment a bit stream into a first segment, a second segment, and a third segment, and generate a first baseband signal that includes the first segment, a second baseband signal that includes the second segment, and a third baseband signal that includes the third segment; and a radio frequency (RF) transmitter to generate a multi-frequency signal based on the first baseband signal, the second baseband signal, and the third baseband signal; and a receiver device that includes an RF receiver to receive the multi-frequency signal, and retrieve the first baseband signal, the second baseband signal, and the third baseband signal from the received multi-frequency signal; and a receiver baseband control to reassemble the bit stream from the received first baseband signal, the received second baseband signal, and the received third baseband signal. | 06-16-2011 |
20110213263 | METHOD FOR DETERMINING A HEARTBEAT RATE - A method for determining a heartbeat rate of a user from an acoustic heartbeat signal, a heartbeat rate measuring device, and a mobile device are described. | 09-01-2011 |
20120093334 | Integrated Monophonic Headset - A wireless monophonic headset device has one ear piece, a control box, and a cable in between. The ear piece comprises a speaker and a battery. The control box includes circuitry including a short-range radio transceiver and a codec. The ear piece battery is connected to supply power to the control box circuitry by means of the cable. | 04-19-2012 |
20120114052 | METHODS THAT COMMUNICATE VIA TRANSFERJET AND NFC TRANSMITTER AND RECEIVER PAIRING - An electronic communication device includes a high-rate RF wireless transmitter circuit (e.g., a TransferJet transmitter circuit) and a low-rate magnetically coupled receiver circuit (e.g., a Near Field Communication receiver circuit). The high-rate RF wireless transmitter circuit transmits a block of data to another proximately located communication device via RF signals using a first RF communication protocol. The low-rate magnetically coupled receiver circuit receives a communication control signal from the other proximately located communication device via magnetic coupling thereto using a second protocol that is different from the first RF communication protocol, and responds to the communication control signal by selectively triggering the high-rate RF wireless transmitter circuit to transmit another block of data when available for transmission. | 05-10-2012 |
20130044793 | ELECTRONIC DEVICES THAT COMMUNICATE VIA MAGNETICALLY COUPLED AND RF COUPLED COMMUNICATION CIRCUITS - An electronic communication device includes a RF wireless transmitter circuit that transmits a block of data to another communication device via RF signals transmitted at a first rate. A magnetically coupled receiver circuit receives a communication control signal from the other communication device via magnetic coupling thereto at a second rate which is less than the first rate, and is configured to respond to the communication control signal by selectively triggering the RF wireless transmitter circuit to transmit another block of data when available for transmission. An inductive charging circuit converts magnetic signals received from the other communication device into power, and supplies the power to the RF wireless transmitter circuit. The RF wireless transmitter circuit transmits data blocks in RF bursts. | 02-21-2013 |
20130308615 | TECHNIQUE FOR PERFORMING A RANDOM ACCESS PROCEDURE OVER A RADIO INTERFACE - The invention relates to a technique for performing a random access procedure over a radio interface, for example between a mobile terminal and a radio base station of a mobile network. A method aspect of the invention comprises the steps of transmitting a synchronization request for synchronization information; receiving synchronization information in response to the synchronization request; and transmitting, based on at least one transmission parameter adjusted in accordance with the synchronization information, a resource request for data transmission resources. | 11-21-2013 |
20140105124 | Method and Arrangement in a Telecommunication System - There is provided a method of operating a communication system, the communication system comprising a user equipment and a receiver, the method in the system comprising generating a random access transmission in a user equipment and transmitting the random access transmission to the receiver in the communication system, the random access transmission including a preamble; receiving the random access transmission from the user equipment at the receiver; processing the random access transmission in the frequency domain to detect the preamble. In preferred embodiments of the invention, the preamble has a cyclic prefix, or is preceded by a plurality of zero-valued symbols. | 04-17-2014 |