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| Number | Title | Issue Date |
| 7738832 | Method and apparatus for switching between shared and individual channels to provide broadcast content services in a wireless telephone network A wireless communications network (100) includes various base stations (110) and subscriber-stations (114). The base stations each provide (602) broadcast content services to subscriber-stations over communication channels of one of the f... | 06/15/2010 |
| 7454209 | Adapting operation of a communication filter based on mobile unit velocity A method and apparatus are provided for adapting a pilot filter based on the velocity of a wireless communication device (WCD) in relation to a wireless network infrastructure. The pilot filter is adapted by determining pilot coefficients for the pilot filter based ... | 11/18/2008 |
| 7421016 | Method and apparatus for testing wireless communication channels Techniques to test a wireless communication link. A traffic channel is tested via a test data service option (TDSO) that may be negotiated and connected similar to other services. Test parameters values may be proposed, accepted or rejected, and negotiated. Test dat... | 09/02/2008 |
| 7263351 | Wireless network optimization through remote device data A system, method, and program for optimizing a wireless network having at least data communication between computer devices selectively connected thereto, and at least one of the computer devices is a remotely located wireless device. The wireless device has a resid... | 08/28/2007 |
| 7260416 | Shared receive path for simultaneous received signals A method and apparatus are disclosed for a wireless communication device to simultaneously receive at least two signals. Two receiver portions are provided in the wireless communication device. A first receiver portion is configured to receive a first communication ... | 08/21/2007 |
| 7260401 | Method and apparatus for flexible call recovery in a wireless communication system A method and apparatus provides for call recovery in a wireless communication system (10). When the communication link between a mobile station (38) and a base station (32) is in trouble, the mobile station and the infrastructure prearrange pote... | 08/21/2007 |
| 7254158 | Soft handoff with interference cancellation in a wireless frequency hopping communication system Techniques are provided to support soft handoff in a frequency hopping OFDMA system. Each sector concurrently supports “non-handoff” users and “soft-handoff” users. A non-handoff user communicates with only one sector, and a soft-handoff user communicates wi... | 08/07/2007 |
| 7251490 | System and method for GSM hard handoff A GSM1×-to-GSM handoff feature allows a GSM1× subscriber with a dual-mode (GSM1× and GSM modes) handset to seamlessly roam from GSM1× coverage areas to GSM coverage areas. This functionality is facilitated by the GSM1× system design which integrates a CDMA RAN ... | 07/31/2007 |
| 7236796 | Method and apparatus for reducing pilot search times utilizing mobile station location information A method and apparatus for conducting a pilot signal search in a wireless communications network. The location of a mobile is determined within the network. This location is then used in determining search window sizes and other search parameter information that is ... | 06/26/2007 |
| 7233591 | Method and apparatus for controlling transmission power in a CDMA communication system Method and apparatus for controlling transmission power in a closed loop power control system, wherein power control commands are based on the energy of the previous power control commands. In one embodiment, the method compares changes in the received energy of rec... | 06/19/2007 |
| 7230941 | Preamble channel decoding Rather than attaching a preamble to a data traffic subpacket, a preamble channel is transmitted along with a traffic channel. In a system wherein the data traffic subpackets are variably sized, preambles can also be variably sized if a target station can decode vari... | 06/12/2007 |
| 7215956 | Method and apparatus for scanning frequency channels for handoff candidates while minimizing battery consumption Techniques for scanning other frequency channels for candidate base stations are described. In one scheme, the scanning of other frequency channels is performed based on the received signal quality (e.g., pilot Ec/Io) for an active base station that a wireless devic... | 05/08/2007 |
| 7151927 | Quality of phone service system A method for checking the quality of service provided by a base station at a location remote from the base station, including transmitting signals between the base station and a call transceiver at the remote location, analyzing at least some of the signals at the r... | 12/19/2006 |
| 7146174 | Method and apparatus for determining the transmission data rate in a multi-user communication system A method and apparatus are described for controlling the data rates for communications to and from a base station and a plurality of remote users. The usage of the communications resource whether the forward link resource (from base station to remote users) or rever... | 12/05/2006 |
| 6873910 | Procedure for searching for position determination signals using a plurality of search modes A method of and system for searching for position determination signals using a plurality of progressively more sensitive search modes comprising a first level mode, a second mode, and at least one higher level mode. If any of the search window parameters exceed pre... | 03/29/2005 |
| 6856282 | Directly acquiring precision code GPS signals In general, the invention is directed to techniques for directly acquiring P-codes without first acquiring C/A-codes. For example, in one embodiment, a system comprises an assist server to track a P-code signal from a Global Positioning System (GPS) satellite and ge... | 02/15/2005 |
| 6856789 | System and method for bluetooth paging with transmit power reduced according to channel metrics measured during inquiry process Power levels for transmitting Bluetooth paging signals are optimized by applying mapping rules dictating different power levels for different signal quality characteristics measured during an earlier, pre-paging inquiry process. A subject Bluetooth device initially ... | 02/15/2005 |
| 6845083 | Multi-standard transmitter system and method for a wireless communication system A transmitter 108 converts a digital baseband signal input 150 for transmission by an antenna 114 to support multiple communication standards. An over-deviation phase multiplier 130 increases signal phase deviation by a factor of M. A dig... | 01/18/2005 |
| 6839021 | Method and apparatus for determining time in a satellite positioning system A method and apparatus for determining a reference time associated with a satellite positioning system. In turn, the reference time, in one embodiment, may be used to determine other navigational information. Such navigational information may include, for example, t... | 01/04/2005 |
| 6832090 | System and method for identification of transmitters with limited information A system and method are disclosed by which a base transceiver station (BTS) may be uniquely identified. When attempting to determine the location of a mobile unit using signal from multiple BTSs, it is critical that the BTSs be uniquely identified and their position... | 12/14/2004 |
| 6825805 | Search procedure for position determination system A method of and system for performing a search for signals useful in determining the position of an entity. A first search is performed as part of a position determination attempt, and measurements are derived from the ensuing search results. Additional searching wi... | 11/30/2004 |
| 6819938 | System and method for power control calibration and a wireless communication device A technique for calibrating the open-loop transmit power of a wireless communication device overcomes the inherent nonlinearities in the gain control input of a variable gain amplifier (VGA). In one embodiment, a feedback circuit generates a signal indicative of the... | 11/16/2004 |
| 6819931 | Method and apparatus for assigning tracking elements to received signals A method for assigning tracking elements includes sorting a list of potential assignments according to a diversity criterion. In one example, a list of received signal instances is sorted first according to a measure of energy and then sorted again according to the ... | 11/16/2004 |
| 6816710 | Method and apparatus for signal processing in a satellite positioning system A method and apparatus for processing satellite positioning system (SPS) signals which are weak in level. In one embodiment, a SPS receiver receives at least two signal samples representing, at least in part, common information, wherein the two signal samples are as... | 11/09/2004 |
| 6816111 | Calibration and correction system for satellite position location systems To provide accurate and quick position measurements in a practical mobile position location system, the GPS receiver is calibrated, a frequency error in the next time period is predicted using a first frequency locked to an externally transmitted signal, and a secon... | 11/09/2004 |
| 6812896 | Selectively coupled two-piece antenna A selectively coupled two-piece antenna for use in a mobile phone having a casing and radio frequency (RF) communications circuitry includes a composite radiator that is selectively extendable from and retractable into the casing and a communications interface that ... | 11/02/2004 |
| 6798826 | Method and apparatus for performing reverse rate matching in a CDMA system Techniques for processing symbols received for a (transport) channel in a (W-CDMA) communication system. According to the W-CDMA standard, the coded bits of a transport channel are first rate-matched, then first de-interleaved, and then segmented to form X radio fra... | 09/28/2004 |
| 6788663 | System, method, and apparatus for generating a timing signal A method of wireless communications according to one embodiment of the invention includes obtaining a first time base (e.g. obtaining a code phase) from a signal received from a ground transmitter (e.g. a CDMA base station). A predetermined offset based on at least ... | 09/07/2004 |
| 6788249 | System for setting coarse GPS time in a mobile station within an asynchronous wireless network A method and apparatus for setting coarse GPS time in a GPS receiver in a mobile station (MS) that is communicating with a base station and a position determining entity (PDE). The MS requests an assistance message from the PDE that includes a sequence of predicted ... | 09/07/2004 |
| 6778885 | Apparatus, method, and system of transferring correction information Apparatuses, methods, and systems of transferring correction information are described. In certain implementations, correction factors relate to stored or calculated values, and a correspondence between a correction factor and a value is indicated by a predetermined... | 08/17/2004 |
| 6775802 | Method, apparatus, and system for signal prediction An apparatus, method, and system for predicting subframes of Global Positioning System (GPS) signals. The apparatus include a processor capable of determining whether a subframe is an almanac subframe, setting a timehead and adding it to a time-of-week (TOW), settin... | 08/10/2004 |
| 6768448 | Apparatus and method for time maintenance in a satellite position system receiver A system for maintaining time in a satellite positioning system (SPS) receiver that relies on almanac data to maintain a reasonably accurate time. The approximate time based on almanac data is sufficiently accurate to bound the unknown parameters when a request for ... | 07/27/2004 |
| 6760582 | Method and apparatus for testing assisted position location capable devices A method and apparatus for testing assisted position location capable devices that includes providing a position determination entity (PDE) simulator that is in communication with a base station simulator simulating one or more base stations and connecting an assist... | 07/06/2004 |
| 6754630 | Synthesis of speech from pitch prototype waveforms by time-synchronous waveform interpolation In a method of synthesizing voiced speech from pitch prototype waveforms by time-synchronous waveform interpolation (TSWI), one or more pitch prototypes is extracted from a speech signal or a residue signal. The extraction process is performed in such a way that the... | 06/22/2004 |
| 6748010 | Combined searching and page monitoring using offline sample storage A novel and improved method for performing paging is described. In one embodiment of the invention a searcher is used to detect spread spectrum signals. Samples received RF signals are stored in a sample buffer. During standby mode, the samples are gathered during p... | 06/08/2004 |
| 6738438 | Parameter estimator with dynamically variable search window size and/or placement A parameter estimator for estimating one or more parameter(s) from a correlation function derived from a signal using a dynamically variable search window is described. The parameter estimator may be employed in a subscriber station to estimate the time of arrival o... | 05/18/2004 |
| 6735563 | Method and apparatus for constructing voice templates for a speaker-independent voice recognition system A method and apparatus for constructing voice templates for a speaker-independent voice recognition system includes segmenting a training utterance to generate time-clustered segments, each segment being represented by a mean. The means for all utterances of a given... | 05/11/2004 |
| 6731146 | Method and apparatus for reducing PLL lock time The lock time is reduced in a phase locked loop frequency synthesizer that has both active modes and standby modes. In the active mode the frequency synthesizer operates to maintain a stable frequency output. The standby or sleep mode is used to reduce power consump... | 05/04/2004 |
| 6725159 | GPS receiver and method for processing GPS signals A global positioning system (GPS) receiver has first circuitry for receiving and processing pseudorandom sequences transmitted by a number of GPS satellites. The first circuitry is configured to perform conventional correlation operations on the received pseudorando... | 04/20/2004 |
| 6720915 | Methods and apparatuses for using assistance data relating to satellite position systems Methods and apparatuses to obtain an ordered set of satellite positioning system (SPS) satellites, in view of a mobile SPS receiver, via one or two-way communication with the mobile SPS receiver. The mobile SPS receiver receives, in one embodiment, an ordered set of... | 04/13/2004 |
