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QUALCOMM Incorporated Patents
Assignee:
QUALCOMM Incorporated
Address:
San Diego, CA
No. of patents:
5295
Patents:












Patent Number Title Of Patent Date Issued
8145141 Frequency agile transceiver for use in a multi-band handheld communications device March 27, 2012
A multi-band handheld communications device includes a transceiver including a transmitter having a transmit filter and a receiver having a receive filter, each of the transmit and receive filters having a bandpass region tunable across multiple bands, and a processor configured to s
8145132 Method and apparatus for reducing frequency space from frequency search March 27, 2012
A method and apparatus for reducing frequency space from code space search is disclosed in a wireless network. The method and apparatus reduces the frequency space without compromising the probability of detection, so that user equipment can expedite system acquisition and reduce pow
8144824 Trend influenced time tracking March 27, 2012
A method for determining a communication channel location is disclosed. A first subset of a plurality of channel impulse responses is averaged over a first time period to produce a first filtered channel impulse response, and a second subset of the plurality of channel impulse responses
8144821 CDMA frequency acquisition using a simplified crystal oscillator that is not temperature compens March 27, 2012
CDMA code channels are acquired using a crystal oscillator that is not temperature compensated and that generates a tuning signal with relatively large frequency error (e.g., +/-5 ppm). Channel acquisition is first attempted at no offset from a start frequency that is obtained by fit
8144818 Apparatus and methods for determining timing in a communication system March 27, 2012
Apparatus and methods for use in a wireless communication system are disclosed for determining a timing position for channel activity in order to resolve timing ambiguity. A disclosed apparatus includes a processor that determines when channel activity occurs in at least one of an early
8144814 Signal quality estimator March 27, 2012
Techniques for estimating signal quality in a communication system are described. Scaled errors are obtained for inphase (I) and quadrature (Q) components of detected symbols. The scaled errors are determined based on a first function having higher resolution for small errors than large
8144812 Best frame derivation in a wireless communications network March 27, 2012
A communications node can receive a plurality of communication signals, each including a block of data estimates with respective quality metrics. Each block of data estimates can be derived from an original block of data sent over different wireless paths, or from a derived block of data
8144735 Transmission of signaling information for broadcast and multicast services March 27, 2012
Techniques for transmitting signaling information for broadcast and multicast services are described. A base station transmits signaling information for each service in accordance with a schedule that includes a repetition period and a modification period. The signaling information i
8144731 Control channel signaling in wireless communications March 27, 2012
Systems and methodologies are described that facilitate multiplexing control data values over a single physical control channel at least in part by dividing the control channel into one or more logical channels. The physical control channel can have a corresponding Walsh space for tr
8144724 Apparatus and method for resolving request collision in a high bandwidth wireless network March 27, 2012
Apparatus and method for reducing collisions on an enhanced access channel in a high bandwidth wireless network during a push-to-talk (PTT) communication between a plurality of user devices. A random delay field is introduced to a set of access parameters and the random delay is gene
8144682 Method and apparatus for enhancing signal-to-noise ratio of position location measurements March 27, 2012
A method and apparatus for generating and use of a position location reference signal that allows a receiver to receive position location signals from relatively weak signal generators when in the presence of a strong signal source. The position location reference signals from multip
8144662 Method and apparatus for neighbor list updates March 27, 2012
An apparatus and method for maintaining information during neighbor list updates comprising acquiring information of a first plurality of GSM neighbor cells; recording and keeping the information for a time period T; receiving a second plurality of GSM neighbor cells; comparing the s
8144658 Method and apparatus for mitigating interference in a wireless communication system March 27, 2012
Techniques to mitigate inter-cell interference using joint time and frequency division are described. A frequency band is divided into multiple non-overlapping frequency subbands. The transmission timeline is divided into T.sub.in and T.sub.out time intervals. Data is exchanged with
8144636 Methods for sending small packets in a peer-to-peer (P2P) network March 27, 2012
An improved mechanism is provided that facilitates transmission of small packets within an ad hoc peer-to-peer network. A small packet is identified to a receiver within a control channel so that its lower power can be considered in an interference management protocol implemented amo
8144593 Method and apparatus for efficient routing in communication networks March 27, 2012
Methods and apparatus for efficient routing in communication networks. In an aspect, a method is provided for traffic routing between first and second nodes in a communication network. The method includes detecting traffic transmitted between the first and second nodes, transmitting a
8144589 Learning-based semi-persistent scheduling in wireless communications March 27, 2012
Systems and methods are provided for a learning-based determination of semi-persistent scheduling of data-packet flow wireless communication. A packetized data flow served to a wireless terminal is fully scheduled for an initial period of time in order to collect statistics associated wi
8144572 Detection and mitigation of interference and jammers in an OFDM system March 27, 2012
The present invention provides a method and apparatus for detecting interference in a wireless communications system. The invention compares the receiver FFT output of a received signal against known sequences such as the packet synchronization sequence, frame synchronization sequence,
8144509 Write operation for spin transfer torque magnetoresistive random access memory with reduced bit March 27, 2012
Systems, circuits and methods for controlling write operations in Spin Transfer Torque Magnetoresistive Random Access Memory (STT-MRAM) are disclosed. A reduced bit cell size is achieved by arranging the source lines (SL) substantially in parallel with the word lines (WL) and substan
8144118 Motion-based tracking March 27, 2012
In one implementation, a first captured image is accessed. The first captured image includes (1) a first display produced at a first point in time, and (2) a user interacting with the first display and not part of the first display. A second captured image is accessed. The second cap
8144042 Combinatorial circuit with shorter delay when inputs arrive sequentially and delta sigma modulat March 27, 2012
A combinatorial circuit with pre-calculation and having shorter delay is described. The combinatorial circuit uses information available from earlier input signals to pre-calculate intermediate signals, which are used to generate output signals when the last input signal arrives. The
8143958 Systems and methods for self testing a voltage controlled oscillator in an open loop configurati March 27, 2012
Methods and apparatus for self testing a multiband voltage controlled oscillator (VCO) are disclosed. A tuning voltage of the VCO is adjusted where the output of the VCO does not affect the input to the VCO. Frequency bands in the VCO are selected. Output frequencies of the VCO are m
8143957 Current-mode gain-splitting dual-path VCO March 27, 2012
Techniques to effectively handle large voltage-controlled oscillator (VCO) gain are described. The techniques utilize (1) a slow high-gain path to provide an average control current that adjusts the center frequency of a VCO and (2) a fast low-gain path to provide an instantaneous co
8143952 Three dimensional inductor and transformer March 27, 2012
A three dimensional on-chip inductor, transformer and radio frequency amplifier are disclosed. The radio frequency amplifier includes a pair of transformers and a transistor. The transformers include at least two inductively coupled inductors. The inductors include a plurality of seg
8143941 Active analog filter having a MOS capacitor device with improved linearity March 27, 2012
An active analog filter (700, 1000) having a MOS capacitor device (730, 1030) with improved linearity is proposed. In an exemplary embodiment, dc bias voltage sources (755, 745) alter the capacitance of MOS varactors (740, 750) connected in anti parallel so that the total capacitance of
8143749 Dual current switch detection circuit with selective activation March 27, 2012
A dual current switch detection circuit with selective activation is disclosed. In a particular embodiment, the switch detection circuit comprises an input node coupled to a switch to receive an input signal from the switch, a first current source coupled to the input node, a second
8140823 Multithreaded processor with lock indicator March 20, 2012
Systems and methods including a multithreaded processor with a lock indicator are disclosed. In an embodiment, a system includes means for indicating a lock status of a shared resource in a multithreaded processor. The system includes means for automatically locking the shared resour
8140324 Systems, methods, and apparatus for gain coding March 20, 2012
A wideband speech encoder according to one embodiment includes a lowband encoder and a highband encoder. The lowband encoder is configured to encode a lowband portion of a wideband speech signal as a set of filter parameters and an encoded excitation signal. The highband encoder is c
8140316 Systems and methods for improving digital system simulation speed by clock phase gating March 20, 2012
An apparatus for simulating digital systems is described. The apparatus includes a processor and memory in electronic communication with the processor. Instructions that are executable by the processor are stored in the memory. A simulation tool is started. The simulation tool is cap
8140137 Compact display unit March 20, 2012
A compact display unit that includes a mobile application server. The mobile application server is mounted in the vehicle for receipt and transmission of communications. The mobile application server is operatively connected to the compact display unit. The compact display unit prese
8140103 Method and apparatus for power scaling in peer-to-peer communications March 20, 2012
An ad hoc peer-to-peer network is provided in which a transmitter wireless terminal is configured to establish a peer-to-peer communication link with a receiver wireless terminal over a shared communication channel. The transmitter wireless terminal may scale its transmit power as a
8140098 Spatial interference mitigation for wireless communication March 20, 2012
Techniques for transmitting and receiving data with spatial interference mitigation in a wireless network are described. In one design of transmitting data with spatial interference mitigation, a first station (e.g., a cell) may receive spatial feedback information (SFI) from a secon
8140026 All-digital selectable duty cycle generation March 20, 2012
All-digital techniques for generating periodic digital signals having selectable duty cycles. In one aspect, a computation block is provided for computing the product of a selected duty cycle and a discrete ratio between a reference clock period and a high-frequency oscillator period.
8140003 Method and apparatus for supporting multi-hop communications in a peer to peer communication sys March 20, 2012
Methods and apparatus for wireless communications in networks, e.g., regional ad hoc peer to peer networks, are described. A communications node, e.g., a third node monitors for wireless communications between other peer communication nodes, e.g., a first node and a second node, in i
8139685 Systems, methods, and apparatus for frequency control March 20, 2012
A receiver according to one embodiment includes a frequency control unit configured to receive a stream of samples including a plurality of received instances of a transmitted signal. The frequency control unit is configured to output a first correction signal (e.g. indicating a rota
8139672 Method and apparatus for pilot communication in a multi-antenna wireless communication system March 20, 2012
Systems and methodologies are described that facilitate improved pilot information to MIMO user devices without increasing interference of SISO user devices in a wireless communication environment. A data communication signal can be generated and transmitted at a first power level, a
8139660 Methods and apparatus related to using a wireless terminal scrambling identifier March 20, 2012
User specific modulation-symbol scrambling is implemented for various uplink segments, e.g., uplink traffic acknowledgement channel (ULTACH), uplink state request channel (ULSRCH), and uplink dedicated control channel (ULDCCH) segments. A wireless terminal is assigned a wireless term
8139612 Methods and apparatus for dynamic packet mapping March 20, 2012
Methods and apparatus for dynamic packet mapping. A method is provided for mapping metric data to produce a decodable packet associated with a channel. The method includes obtaining a channel identifier associated with metric data, determining an available buffer from a plurality of
8139593 Memory management for high speed media access control March 20, 2012
Aspects disclosed herein address the need in the art for memory management for high speed media access control. A packet buffer may store packets with a first data structure, comprising the packet length, sequence number, and a pointer to a second data structure. Packet data may be s
8139545 Method and apparatus for forwarding messages among multiple radio networks March 20, 2012
Techniques to forward unsolicited messages from an (IS-2000) CDMA radio network via an HDR radio network to an access terminal. A session is first established between the access terminal and the HDR radio network. During session establishment or thereafter, the access terminal indicates
8139542 Cell timing acquisition in a W-CDMA hard handover March 20, 2012
Cell timing is detected by first trying to detect a target handover cell through detecting a primary synchronization channel (P-SCH) followed by a common pilot channel (CPICH). If that fails, N number of retrials is performed using a full-window search on the CPICH. The full-window CPICH
8139533 Division of the scheduling algorithm into background and foreground algorithms March 20, 2012
Systems and methodologies are described that facilitate dividing scheduling algorithms into background and foreground aspects capable of simultaneously servicing a multiplicity of disparate flows in wideband communications networks. The systems provided herein arbitrarily select pros
8139531 Methods for sending small packets in a peer-to-peer (P2P) network March 20, 2012
An improved mechanism is provided that facilitates transmission of small packets within an ad hoc peer-to-peer network. A small packet is identified to a receiver within a control channel so that its lower power can be considered in an interference management protocol implemented amo
8139528 Adaptive transmission of resource utilization messages March 20, 2012
An adaptive scheme controls the transmission of interference management messages by wireless nodes. For example, the adaptive scheme may be used to determine whether and/or how to transmit resource utilization messages. Such a determination may be based on, for example, comparison of
8139518 System for measuring a rise-over-thermal characteristic in a communication network March 20, 2012
A system for measuring a rise-over-thermal (RoT) characteristic in a communication network includes controlling a transmitting station to maintain its transmit power at a substantially constant level for a first time interval, and measuring a first received power level. The transmitt
8139426 Dual power scheme in memory circuit March 20, 2012
A semiconductor memory device includes address signal level shifters configured to transform a low level address signal into a higher level address signal. A decoder is configured to receive the higher level address signal and, in response, provide word line signals. Write drivers re
8138835 Wide band LNA with noise canceling March 20, 2012
Techniques to improve low noise amplifiers (LNAs) with noise canceling are described. LNA includes a first and a second amplifier which work together to noise cancel the noise generated at an input stage circuit. The input stage circuit receives an RF signal and is characterized by a
8138830 Variable gain instrumentation amplifier March 20, 2012
Techniques for providing an instrumentation amplifier having a plurality of selectable gain settings. In an exemplary embodiment, a gain adjustment block for accepting a differential input voltage is coupled to a differential-to-single-ended conversion block for generating a single-e
8138814 High signal level compliant input/output circuits March 20, 2012
A signal driver for an interface circuit has a first stage level shifter to accept input signals and output signals at a first signal level. The signal driver also has a second stage level shifter coupled to the first stage level shifter to output signals at a second signal level. El
8135443 Portable device with priority based power savings control and method thereof March 13, 2012
A portable device includes a controller that is responsive to a remaining power capacity of the battery, and a power consumption level of the portable device and based on user prioritized functional processing capability features, dynamically controls functional processing capability
8135426 Optimistic talk-permit reliability enhancement in a push-to-talk system March 13, 2012
A system, method, and computer program for providing a greater reliability for a direct-communication, such as push-to-talk communication, being bridged between members of a communicating group of wireless telecommunication devices. Each wireless telecommunication device, such as a c

 
 
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