Patent application number | Description | Published |
20080242294 | DETERMINING PER SECTOR RECEIVED POWER LEVEL - At a mobile device, a total received power represents signals received from all access points. In order to calculate an appropriate transmit power for communication with a single access point, a mobile device determines a per sector received power level. The mobile device can ascertain a time-domain channel response from each access point pilot signal, ascertain a received digital power lever per sector from each access point pilot signal and, based in part on the digital power level, calculate a received power level from each access point. A per sector received power level can be utilized to conserve battery power and/or to reduce interference in a wireless communications network. | 10-02-2008 |
20080242337 | DIGITAL AND ANALOG POWER CONTROL FOR AN OFDMA/CDMA ACCESS TERMINAL - Aspects describe controlling a power level for an access terminal in a wireless communication system that utilizes multiple modulation waveforms. The power can be controlled after an Access Grant is received in response to an Access Probe until the mobile device transitions into a steady state. A reference power can be continuously monitored and a setting of a power amplifier can be modified only when the reference power changes. A digital gain of a reverse data channel can be adjusted relative to the reference power level. | 10-02-2008 |
20080298452 | FAST SQUARE ROOT ALGORITHM FOR MIMO EQUALIZATION - Systems and methodologies are described that facilitate equalization of received signals in a wireless communication environment. Using multiple transmit and/or receive antennas and MIMO technology, multiple data streams can be transmitted within a single tone. During equalization, receivers can separate data received within a tone into individual data streams. The equalization process generally is computationally expensive. Equalizer functions include the inverse operation, which can be computed using the fast square root method; however, the fast square root method involves large numbers of computations for a set of matrices, where the size of a matrix in the set of matrices increases with the number of transmit or receive antennas. Utilizing a modification of the fast square root method, a subset of the elements of the matrices can be selected and updated to reduce the number and/or complexity of computations. | 12-04-2008 |
20080311908 | Method and Apparatus for Zonecode-Based Registration in Active State in Wireless Communication System - A method and apparatus for ZoneCode-based registration is described. A list of RegistrationZoneCodes is stored, wherein the list of RegistrationZoneCodes is associated with subnets visited by the access terminal. It is determined if a protocol cache information is keyed by a (Subnet, RegistrationZoneCode) pair. The cached information is deleted when the (Subnet, RegistrationZoneCode) pair is deleted from a RegistrationZoneCodeList. N | 12-18-2008 |
20090028107 | APPARATUS AND METHOD FOR EFFICIENT TRANSMISSION OF ACKNOWLEDGEMENTS - Method and apparatus for transmission of information in multiple access communication system is described. Information from a plurality of access terminals is received. Alternatively, an access terminal determines what information needs to be sent to the access point. A determination is made as to whether sufficient resources, such as time, power level, or channels, are available to send an indication of acknowledgment. If sufficient resources are not available at the given time, the transmission of an indication of acknowledgment is delayed until sufficient resources are available. | 01-29-2009 |
20090046713 | METHOD AND APPARATUS FOR TRANSMITTING NON-DECODABLE PACKETS - Acknowledgments (ACKs/NACKs) are suppressed when transmitting non-decodable packets in a communication system that utilizes HARQ. Non-decodable packets are transmitted to save system bandwidth and make the overall spectral efficiency higher. The transmitter and receiver know that in HARQ when the transmitter transmits a non-decodable packet to the receiver, this will cause the receiver to automatically transmit back a NACK. The transmitter and receiver exploit this fact by discarding and/or not transmitting the NACK (respectively). | 02-19-2009 |
20090080508 | FAST SQUARE ROOT ALGORITHM FOR MIMO EQUALIZATION - Systems and methodologies are described that facilitate equalization of received signals in a wireless communication environment. Using multiple transmit and/or receive antennas and MIMO technology, multiple data streams can be transmitted within a single tone. During equalization, receivers can separate data received within a tone into individual data streams. The equalization process generally is computationally expensive. Equalizer functions include the inverse operation, which can be computed using the fast square root method; however, the fast square root method involves large numbers of computations for a set of matrices, where the size of a matrix in the set of matrices increases with the number of transmit or receive antennas. Utilizing a modification of the fast square root method, a subset of the elements of the matrices can be selected and updated to reduce the number and/or complexity of computations. | 03-26-2009 |
20090147693 | METHOD AND APPARATUS FOR MONITORING OTHER CHANNEL INTERFERENCE IN WIRELESS COMMUNICATION SYSTEM - A method and apparatus for monitoring other channel interference in wireless communication system are described. An OSI Monitor Set (OSIMonitorSet) is updated at the beginning of every superframe of a reverse link (RL) serving sector. A list of Pilot PN's (PilotPN's) of the sectors whose pilot strength (PilotStrenth) is larger than or equal to an other sector interference Monitor Threshold (OSIMonitorThreshold) in an OSIMonitorSet is provided, wherein the PilotPN and the PilotStrength are fields in an Overhead Parameter List (OverheadParameterList) of an Overhead Message Protocol and the OSIMonitorThreshold is a configuration attribute of the Overhead Message Protocol. The PilotPN of the reverse link Serving Sector (RLServingSector) are excluded. It is determined if the size of the list OSI Monitor Set Size (OSIMonitorSetSize) is larger than or equal to N | 06-11-2009 |
20090149172 | SUPERVISING QUICKCHANNELINFO BLOCK, EXTENDEDCHANNELINFO MESSAGE AND SECTORPARAMETERS MESSAGE IN WIRELESS COMMUNICATION SYSTEMS - A method and apparatus for supervising a QuickChannelInfo block, ExtendedChannelInfo message and SectorParameters message in a wireless communication is described. A QuickChannelInfo supervision timer for T | 06-11-2009 |
20090213788 | METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING A SYSTEMINFO BLOCK IN AN ACTIVE STATE IN WIRELESS COMMUNICATION SYSTEM - A method and apparatus for transmitting a SystemInfo block in an Active state in a wireless communication system is described. The SystemInfo block is transmitted every N | 08-27-2009 |
20090213789 | METHOD AND APPARATUS FOR PROCESSING IN READ SYSTEMINFO STATE IN A WIRELESS COMMUNICATION SYSTEMS - A method and apparatus for processing in Read SystemInfo state in a wireless communication network, the method comprising issuing a ControlChannelMAC.Activate command, issuing a OverheadMessages.Activate command and determining if a SystemInfoBlock is received within T | 08-27-2009 |
20090219917 | METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING AN EXTENDEDCHANNELINFO MESSAGE IN AN ACTIVE STATE IN WIRELESS COMMUNICATION SYSTEM - A method and apparatus for transmitting and receiving an ExtendedChannelInfo message. The method comprises broadcasting the ExtendedChannelInfo message over a Forward Traffic Channel Medium Access Control (MAC); transmitting the ExtendedChannelInfo message in superframes, wherein the superframe number is divisible by N | 09-03-2009 |
20090245121 | METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING A QUICKCHANNELINFO BLOCK IN ACTIVE STATE IN WIRELESS COMMUNICATION SYSTEM - A method and apparatus for transmitting and processing a QuickChannelInfo block is described. It is determined if a superframe is with odd superframe index. A QuickChannelInfo block is transmitted in every superframe with an odd superframe index. The contents of the QuickChannelInfo block are changed in accordance with the QuickChannelInfo Validity field of the QuickChannelInfo block. It is determined if multi-carrier mode is MultiCarrierOn. The QuickChannelInfo block is transmitted on each carrier. The QuickChannelInfo block is transmitted over the communication. The QuickChannelInfo block is processed after the QuickChannelInfo block is received over a communication link. | 10-01-2009 |
20100029211 | DYNAMIC IoT SETPOINTS AND INTERFERENCE CONTROL - Reverse link interference can be controlled by utilizing a dynamic and changeable IoT setpoint, which is a quantitative measurement of total interference received at a base station. The interference can occur when a mobile device in an adjacent sector is communicating over the reverse link. The IoT setpoint can be changed based on conditions occurring in the sector and/or scheduling information for the future. A fast up indicator (Up+) can be transmitted for reverse link interference, which allows the receiving device to take advantage of the fact that additional interference created will not affect the sector. An interference control action can be transmitted in an Other Sector Interference Bit (OSIB) channel over the air or over the backhaul. The interference control action can be determined as a function of the dynamic IoT setpoint. | 02-04-2010 |
20100029265 | SYSTEMS AND METHODS THAT UTILIZE A CAPACITY-BASED SIGNAL-TO-NOISE RATIO TO PREDICT AND IMPROVE MOBILE COMMUNICATION - Techniques for utilizing a capacity-based effective signal-to-noise ratio (SNR) to improve wireless communication are described herein. In an embodiment, a mobile terminal can determine the effective SNR from a forward link channel using pilot/data symbols. The mobile terminal can convey the effective SNR to a base station. In order to minimize transmission overhead, the mobile terminal can quantize the effective SNR prior to transmitting it to the base station. In another embodiment, the base station can determine the effective SNR from a reverse link. The base station can utilize the effective SNR to facilitate scheduling transmissions from the mobile terminal, transmitting power control commands to the mobile terminal, and determining a supporting data rate for the mobile terminal, for example. Suitable SNRs include constrained, unconstrained, average, and/or approximated effective SNRs. In addition, various filters, such as an averaging filter, can be utilized to further process the effective SNR. | 02-04-2010 |
20100074219 | Methods and Apparatus for Reverse Link Timing Correction - Methods and apparatus for reverse link timing correction in a wireless communication device. In particular, when a handoff of the device from a first sector currently serving the device to a second sector not currently serving the device is detected, a first function linking timing correction of a reverse link of the device to forward link timing corrections is changed to a second function for timing correction. In particular, the second function is configured to correct reverse link timing during a time period of either during or for a predetermined period after a handoff of the device from the first sector to the second sector, where the second function is based on a criterion different from criteria of the first function. | 03-25-2010 |
20100110976 | A METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING A SECTORPARAMETERS MESSAGE IN AN ACTIVE STATE IN WIRELESS COMMUNICATION SYSTEM - A method and apparatus for transmitting and receiving a SectorParameters message in an Active state is provided. The method comprises transmitting a SectorParameters message over a Forward Traffic Channel Medium Access Control(MAC) in superframe number wherein the superframe number is divisible by N | 05-06-2010 |
20100238896 | ON-HAND REVERSE-LINK PILOT TRANSMISSION - Pilots are transmitted on demand on a reverse link and used for channel estimation and data transmission on a forward link. A base station selects at least one terminal for on-demand pilot transmission on the reverse link. Each selected terminal is a candidate for receiving data transmission on the forward link. The base station assigns each selected terminal with a time-frequency allocation, which may be for a wideband pilot, a narrowband pilot, or some other type of pilot. The base station receives and processes on-demand pilot transmission from each selected terminal and derives a channel estimate for the terminal based on the received pilot transmission. The base station may schedule terminals for data transmission on the forward link based on the channel estimates for all selected terminals. The base station may also process data (e.g., perform beamforming or eigensteering) for transmission to each scheduled terminal based on its channel estimate. | 09-23-2010 |
20100315225 | IDENTIFICATION AND CONNECTIVITY GATEWAY WRISTBAND FOR HOSPITAL AND MEDICAL APPLICATIONS - A communication gateway wristband serves as a source of patient identification and as an interface between a personal area network (PAN) of miniaturized electronic medical sensors on a patient and a wireless wide-area network (WWAN) such as a hospital network. The gateway wristband includes a PAN transceiver which can establish wireless data links with wireless medical sensors, a WWAN transceiver which can establish a wireless data link with WWAN infrastructure, a memory which stores a patient identifier, and a processor which receives data via the PAN transceiver and relays the patient identifier and the received data to an external network via the WWAN transceiver. The processor manages communications with both the PAN and WWAN transceivers, stores received sensor data in memory, and translates data from the PAN protocol to the WWAN protocol so that sensor data is relayed to the hospital infrastructure. | 12-16-2010 |
20110053558 | SECURING PAIRING VERIFICATION OF DEVICES WITH MINIMAL USER INTERFACES - A method, system and devices for enabling secure pairing between two communication devices equipped with a minimal user interface includes determining a verification pattern based upon security information exchanged between the two communication devices and presenting the verification pattern in a manner that can be perceived by a user who can determine whether the verification patterns are the same. The verification patterns may be presented as flashing light displays, such as flashing sequences of a light emitting diode, or as sounds, such as tones or click patterns emitted by a speaker. If a user perceives that the verification patterns emitted by both communication devices are the same, the user may so indicate by pressing a button on each of the devices. Obtaining such user confirmation of the verification patterns enables establishing a secure pairing between the two communication devices that is protected from active and passive eavesdropping. | 03-03-2011 |
20110205987 | PACKET AWARE SCHEDULER IN WIRELESS COMMUNICATION SYSTEMS - Apparatuses and methodologies are described that facilitate packet aware scheduling are provided. In some embodiments, if all of the information of a packet cannot be scheduled in a single transmission period, additional resources may be assigned to transmission of the contents of the packet based upon latency requirements and/or transmission constraints of the packet. | 08-25-2011 |
20110255518 | Use of supplemental assignments to decrement resources - Systems and methodologies are described that facilitate dynamically supplementing or decrementing resource assignments to mobile devices in a wireless network environment without requiring transmission of replacement assignments. Supplemental assignments can be generated based on information related to mobile device need and resource availability. Moreover, resource assignments can be persisted for a mobile device. | 10-20-2011 |
20110282999 | METHOD OF PROVIDING A GAP INDICATION DURING A STICKY ASSIGNMENT - A method and apparatus are provided to manage the assignment transmission resource of forward and reserve link that is assigned to transmitting entity for a period of time. An indication of a gap is provided whenever the transmitting entity is not transmitting actual data packets (e.g. whole or part of intended data or content), yet the transmitting entity is to maintain the assignment of the allocated resource. For example, an erasure signature packet comprising a first data pattern is transmitted on the assigned resource when there is no actual data to transmit on the assigned resource. | 11-17-2011 |
20120002623 | SCALABLE FREQUENCY BAND OPERATION IN WIRELESS COMMUNICATION SYSTEMS - To support mobile stations that are not capable of demodulating the entire bandwidth or that can be made to demodulate less than the entire bandwidth, a system, apparatus and method are provided to schedule users on less than all of the bandwidth. Further, certain users can be scheduled on more of the bandwidth than others. | 01-05-2012 |
20120122496 | MULTIPLE PAGING CHANNELS FOR EFFICIENT REGION PAGING - Systems and methods are described that mitigating coverage gaps near region boundaries using a plurality of multi-sector broadcast (MSBC) paging channels in wireless networking environments. One or more MSBC paging channels can be assigned unique time slots, such that although the channels can be identical, they are disjointed in time. Accordingly, such channels and/or dynamically generated paging zones associated therewith can be overlapped in areas where wireless device density is high and requires substantial paging capacity. Additionally, a single paging channel can be employed in multiple instances in a paging region without overlap to mitigate inter-channel interference. | 05-17-2012 |
20120219036 | USING MULTIPLE ANTENNAS TO IMPROVE RANGING AVAILABILITY - Certain aspects of the present disclosure relate to a technique for multiple antennas on a body-mounted node to improve ranging availability. The present disclosure also supports utilizing transmit antenna diversity for reliable ranging, wherein the antenna diversity can be achieved by employing two separate transmitter chains. | 08-30-2012 |
20120220233 | RANGING WITH BODY MOTION CAPTURE - Certain aspects of the present disclosure relate to techniques of performing ranging with body motion capture. | 08-30-2012 |
20130177059 | CHANNEL ESTIMATION FOR AN OFDM COMMUNICAITON SYSTEM WITH INACTIVE SUBBANDS - For channel estimation in a spectrally shaped wireless communication system, an initial frequency response estimate is obtained for a first set of P uniformly spaced subbands (1) based on pilot symbols received on a second set of subbands used for pilot transmission and (2) using extrapolation and/or interpolation, where P is a power of two. A channel impulse response estimate is obtained by performing a P-point IFFT on the initial frequency response estimate. A final frequency response estimate for N total subbands is derived by (1) setting low quality taps for the channel impulse response estimate to zero, (2) zero-padding the channel impulse response estimate to length N, and (3) performing an N-point FFT on the zero-padded channel impulse response estimate. The channel frequency/impulse response estimate may be filtered to obtain a higher quality channel estimate. | 07-11-2013 |
20130317821 | SPARSE SIGNAL DETECTION WITH MISMATCHED MODELS - Various arrangements for detecting a type of sound, such as speech, are presented. A plurality of audio snippets may be sampled. A period of time may elapse between consecutive audio snippets. A hypothetical test may be performed using the sampled plurality of audio snippets. Such a hypothetical test may include weighting one or more hypothetical values greater than one or more other hypothetical values. Each hypothetical value may correspond to an audio snippet of the plurality of audio snippets. The hypothetical test may further include using at least the greater weighted one or more hypothetical values to determine whether at least one audio snippet of the plurality of audio snippets comprises the type of sound. | 11-28-2013 |
20140004899 | SYSTEM AND METHOD FOR CONTROLLING PAGING DELAY | 01-02-2014 |
20140018068 | SYSTEM AND METHOD FOR CONTROLLING PAGING DELAY WITH TIMING ARRANGEMENTS AND DUAL PAGE SCANS - Systems and methods for controlling a delay associated with paging a remote device. In one implementation, a paging device arranges page operations such that if one of two consecutive page scans performed by a remote device occurs during a response scan, the other page scan occurs during the transmission of a page. In another implementation, a device scanning for a page arranges page scans such that if one of two consecutive page scans occurs during a page response scan, the other page scan occurs during the transmission of a page. In another implementation, a device scanning for a page performs a series of sets of separate page scans, wherein the time interval between two of separate scans in a set is less than the time interval between adjacent sets. The page scans in a set are configured to ensure that one of them occurs during the transmission of a page. | 01-16-2014 |
20140143579 | SEQUENTIAL FEATURE COMPUTATION FOR POWER EFFICIENT CLASSIFICATION - Disclosed is an apparatus and method for power efficient processor scheduling of features. In one embodiment, features may be scheduled for sequential computing, and each scheduled feature may receive a sensor data sample as input. In one embodiment, scheduling may be based at least in part on each respective feature's estimated power usage. In one embodiment, a first feature in the sequential schedule of features may be computed and before computing a second feature in the sequential schedule of features, a termination condition may be evaluated. | 05-22-2014 |
20140156659 | FUSING CONTEXTUAL INFERENCES SEMANTICALLY - System and methods for performing context inference in a computing device are disclosed. In one embodiment, a method of performing context inference includes: determining, at a computing device, a first context class using context-related data from at least one data source associated with a mobile device; and determining, at the mobile device, a fusion class based on the first context class, the fusion class being associated with at least one characteristic that is common to the first context class and a second context class that is different from the first context class. | 06-05-2014 |
20140177551 | METHOD OF PROVIDING A GAP INDICATION DURING A STICKY ASSIGNMENT - A method and apparatus are provided to manage the assignment transmission resource of forward and reserve link that is assigned to transmitting entity for a period of time. An indication of a gap is provided whenever the transmitting entity is not transmitting actual data packets (e.g. whole or part of intended data or content), yet the transmitting entity is to maintain the assignment of the allocated resource. For example, an erasure signature packet comprising a first data pattern is transmitted on the assigned resource when there is no actual data to transmit on the assigned resource. | 06-26-2014 |
20140269667 | METHOD AND APPARATUS FOR DYNAMIC CONFIGURATION OF PACKET PREAMBLES FOR SYNCHRONIZATION-BASED TRANSMISSIONS - Various aspects of the disclosed approach described herein allows a reduction of preamble overhead by tailoring transmitted packet preambles based on an expected level of clock-related offset between a transmitter and a receiver for a pair of communicating nodes. An estimate may be maintained at the transmitter of maximum time and frequency offsets between the transmitter and the receiver. The estimate may then be utilized to create a customized preamble sequence for generating the packet preamble. The estimate may also be utilized to select a particular modulation technique for the packet preamble. | 09-18-2014 |
20140274041 | USING MOTION TO IMPROVE LOCAL WIRELESS NETWORK CONNECTIVITY - The disclosure is directed to using motion to improve local wireless network connectivity. An aspect determines whether or not a motion state of a mobile device has changed and, if the motion state has changed, determines whether or not to trigger a scan for a local wireless network. | 09-18-2014 |
20140274042 | USING MOTION TO OPTIMIZE PLACE OF RELEVANCE OPERATIONS - The disclosure is directed to using a change in motion to improve place of relevance (PoR) detection. An aspect determines whether or not a motion state of a mobile device has changed to a new motion state, determines whether or not to trigger the mobile device to scan for available local wireless networks if the motion state has changed, and identifies a PoR based on the scanning. | 09-18-2014 |
20140274044 | USING MOTION TO IMPROVE LOCAL WIRELESS NETWORK CONNECTIVITY - The disclosure is directed to using motion to reduce unnecessary scans for local wireless networks. An aspect determines whether or not a motion state change event of a user device indicates a change from a moving motion state to a stationary motion state, and if the motion state change event indicates a change from a moving motion state to a stationary motion state, ignoring the motion state change event. An aspect of the disclosure is directed to using motion to reduce latency of scanning for local wireless networks. An aspect determines whether or not a user device is in motion, determines whether or not a periodic scan timer has expired and/or a received signal strength indicator (RSSI) is below a threshold, and if the user device is in motion and the periodic scan timer has expired or the RSSI is below the threshold, scanning for a local wireless network. | 09-18-2014 |
20140278238 | SPECTROMETER FOR PERSONAL CONTEXT - A method of performing context inference is described. The method includes collecting ambient light at a spectrometer sensor integrated in a portable device, characterizing the collected light to obtain optical information, comparing the optical information to optical data predetermined to match one or more contexts, inferring at least one characteristic of a specific context based on the comparison, and determining a probability that the portable device is in the specific context. | 09-18-2014 |
20140279786 | APPLICATION-CONTROLLED GRANULARITY FOR POWER-EFFICIENT CLASSIFICATION - Systems and methods for providing application-controlled, power-efficient context (state) classification are described herein. An apparatus for performing context classification with adjustable granularity as described herein includes a classifier controller configured to receive a request for a context classification and a granularity input associated with the request; and a context classifier communicatively coupled to the classifier controller and configured to receive the request and the granularity input from the classifier controller, to select a resource usage level for the context classification based on the granularity input, wherein a granularity input indicating a higher granularity level is associated with a higher resource usage level and a granularity input indicating a lower granularity level is associated with a lower resource usage level, and to perform the context classification at the selected resource usage level. | 09-18-2014 |
20150071234 | METHOD OF OPTIMIZING PORTIONS OF A FRAME - Methods and apparatus for transmitting modulation parameters are disclosed. The apparatus and methods provide determination of when a particular modulation scheme is used by an access point. One or more modulation parameters associated with the particular modulation scheme and one or more timing values associated with the particular modulation scheme are then determined and transmitted using a portion of a broadcast channel transmitted by the access point. | 03-12-2015 |