Patent application number | Description | Published |
20080220819 | DYNAMICALLY RECONFIGURABLE RECEIVER - Aspects of the disclosure describe a cellular transceiver that can include multiple diversity branch receivers that receive a transmitted signal from a base station (BS). The cellular transceiver can include 1) a windup detector that can detect a low windup condition and 2) a receiver selector that can modify a number of active diversity branch receivers when the low windup condition is detected. | 09-11-2008 |
20080259804 | DEVICE AND METHODS FOR INCREASING WIRELESS CONNECTION SPEEDS - Various embodiments include wireless client device comprising an application subsystem including a processor and a storage device coupled to the processor, a communication subsystem coupled to the application subsystem, the communication subsystem including a media access control (MAC) device and a physical (PHY) device, wherein the physical device is operably coupled to the processor of the application subsystem, wherein the physical device is operable to receive a wireless signal, to analyze the wireless signal for at least one aspect of wireless performance, and to determine if the at least one aspect of wireless performance can be improved, wherein, if it is determined that the at least one aspect of wireless performance can be improved, the physical device is operable to pass the wireless signal to the processor of the application subsystem for processing of the wireless signal within the processor. | 10-23-2008 |
20090171658 | SELECTION OF SPEECH ENCODING SCHEME IN WIRELESS COMMUNICATION TERMINALS - A method for communication includes receiving modulated signals, which convey encoded speech. A measure of information entropy associated with the received signals is estimated. A speech encoding scheme is selected responsively to the estimated measure of the information entropy. A request to encode subsequent speech using the selected speech encoding scheme is sent to a transmitter. | 07-02-2009 |
20100075710 | METHOD AND APPARATUS TO VARY POWER LEVEL OF TRAINING SIGNAL - Briefly, a method to transmit over an uplink channel a training signal having a power level which varies according to a parameter related to downlink channel characteristics is provided. Communication system that includes communication devices to transmit and receive the training signal is further provided. | 03-25-2010 |
20110044299 | VAMOS transmission schemes - A method includes assigning a communication channel for simultaneous transmission to at least first and second mobile communication terminals using a Time-Division Multiplexing (TDM) communication protocol. Upon determining that data is to be transmitted over the communication channel to both the first and the second mobile communication terminals, the data is transmitted at a first power level that is defined for transmission to the first mobile communication terminal as part of the simultaneous transmission. Upon determining that the data is to be transmitted over the communication channel only to the first mobile communication terminal, the data is transmitted at a second power level that is defined for transmission only to the first mobile communication terminal and is lower than the first power level. | 02-24-2011 |
20110051650 | Grouping of users onto traffic channels in multiple-users-per-channel transmission schemes - A method includes transmitting downlink signals to at least first and second mobile communication terminals over respective first and second traffic channels. Reception quality measures are obtained from the first and second mobile communication terminals for at least one of the traffic channels. Based on the reception quality measures, an expected downlink performance is estimated for simultaneous transmission to the first and second mobile communication terminals on a candidate shared traffic channel. | 03-03-2011 |
20110136498 | RSSI ESTIMATION IN MULTI-TECHNOLOGY COMMUNICATION TERMINALS - A method used in a receiver includes measuring first Received Signal Strength Indications (RSSIs) in respective first communication channels, which are located in a given frequency band and which each have a first channel bandwidth. Based on the first RSSIs, second RSSIs are computed for respective second communication channels, which are located in the given frequency band and which each have a second channel bandwidth that is larger than the first channel bandwidth. At least one of the first and second communication channels over which to receive signals at the receiver are selected using the first and second RSSIs. | 06-09-2011 |
20120236920 | DRX OPERATION WITH CRYSTAL OSCILLATOR - A method in a receiver includes receiving from a transmitter an instruction to check for messages from the transmitter at intervals having a specified time period. A frequency error of the receiver relative to the transmitter is estimated at the receiver, and an actual time period that does not exceed the specified time period is selected based on the estimated frequency error. The receiver is activated periodically according to the selected actual time period so as to reset the frequency error. | 09-20-2012 |
20120245883 | INITIAL ACQUISITION USING CRYSTAL OSCILLATOR - A method includes holding in a memory of a receiver, for each temperature in a range of temperatures, a respective first parameter indicative of a frequency error of a crystal oscillator in the receiver at the temperature, and a respective second parameter indicative of an uncertainty of the first parameter. An operating temperature of the crystal oscillator is measured. One or more frequencies, for initial acquisition of signals from a transmitter, are selected based on the first and second parameters corresponding to the measured operating temperature. The receiver is tuned to receive the signals from the transmitter on at least one of the selected frequencies. | 09-27-2012 |
20120276917 | RSSI ESTIMATION IN MULTI-TECHNOLOGY COMMUNICATION TERMINALS - A method used in a receiver includes measuring first Received Signal Strength Indications (RSSIs) in respective first communication channels, which are located in a given frequency band and which each have a first channel bandwidth. Based on the first RSSIs, second RSSIs are computed for respective second communication channels, which are located in the given frequency band and which each have a second channel bandwidth that is larger than the first channel bandwidth. At least one of the first and second communication channels over which to receive signals at the receiver are selected using the first and second RSSIs. | 11-01-2012 |
20130028119 | REDUCING PLMN SEARCH TIME - A method includes storing in a mobile communication terminal a definition of a set of frequency bands in which the terminal is capable of communicating, including at least first and second frequency bands. One or more combinations of at least portions of the frequency bands in the set, which cannot be allocated in proximity to one another due to interference, are determined in the terminal. A search is conducted in the terminal over the set of the frequency bands. Upon detecting a presence of a candidate wireless network in a first portion of the first frequency band, which cannot be allocated in proximity to at least a second portion of the second frequency band in accordance with the specification, at least the second portion is omitted from the search. | 01-31-2013 |
20130201853 | Spectrum estimation for low-load LTE signals - A method includes receiving a signal in a communication terminal. A power spectral density, which the signal would have under full-load conditions of a transmitter transmitting the signal, is estimated based on the received signal. An operation is performed in the communication terminal using the estimated power spectral density. | 08-08-2013 |
20130217386 | PARALLEL MULTI-RAT PLMN SEARCH - A method includes, in a mobile communication terminal, receiving signals in a frequency band. One or more lists of entries are generated based on the received signals, each entry specifying a respective frequency channel suspected of containing a carrier of a respective Radio Access Technology (RAT). At least some of the entries are scanned in accordance with a scanning order that alternates from a first RAT to a second RAT before scanning all the entries of the first RAT. For each scanned entry, detection is made whether the respective frequency channel actually contains the carrier of the respective RAT. The detection of the carriers in the frequency band is output. | 08-22-2013 |
20140135011 | EFFICIENT RECOVERY FROM CALL SETUP FAILURES - A method includes, in a mobile communication terminal, detecting degradation in communication quality between the terminal and a serving base station during establishment of a call via the serving base station. During the establishment of the call via the serving base station, the terminal searches for an alternative base station that is suitable for establishing the call. Upon finding the alternative base station, a switch is made to establish the call via the alternative base station. | 05-15-2014 |
20140211697 | APPARATUS AND METHOD FOR REDUCING RECEIVER FREQUENCY ERRORS - A method includes, in a receiver that includes an uncompensated crystal oscillator, receiving signals from a transmitter by activating the receiver periodically at intervals corresponding to a specified wake-up time period. In response to detecting at the receiver that the specified wake-up time period is insufficient for maintaining synchronization between the receiver and the transmitter using the uncompensated crystal oscillator, an actual wake-up time period, smaller than the specified wake-up time period, is selected. The receiver is activated periodically according to the selected actual wake-up time period. | 07-31-2014 |
20150078187 | NOISE ESTIMATION BASED ON CONTROL MESSAGES DESTINED FOR OTHER MOBILE TERMINALS - A method in a communication terminal includes receiving a signal that carries a data channel and at least a control-channel message, which has a first part that is masked with a terminal-specific code. A second part of the control-channel message that is not masked with the terminal-specific code is decoded to produce a decoded second part. The validity of decoded second part is checked. In response to deciding that the decoded second part is valid, a noise level for the data channel is estimated based on the decoded second part. | 03-19-2015 |