Patent application number | Description | Published |
20090170528 | Subscriber Selective, Area-based Service Control - A method for use in controlling a mobile device's access to one or more wireless communications networks (WCNs) with an overlaid wireless location system (WLS) includes monitoring a set of one or more predefined signaling links of at least one WCN, and detecting an event associated with the mobile device. Next, using a low-accuracy location function of the WLS, the system determines that the mobile device is within a defined area of interest and is potentially within a defined quiet zone. Next, using a high-accuracy location function of the WLS, the system determines a precise geographic location of the mobile device and based thereon confirms that the mobile device is within the quiet zone or at least within an area of ambiguity around the quiet zone. Finally, the mobile device's access to the wireless communications network is limited, e.g., according to a pre-defined rule established by the carrier. This approach allows finer definition of the fenced area while also minimizing the load on the high-accuracy location function. The proximity threshold is preferably based on the accuracy of the underlying location technology. | 07-02-2009 |
20100052990 | Portable, Iterative Geolocation of RF Emitters - Iterative geolocation of a stationary RF emitter through the use of TDOA may include the use of a single portable geolocation (e.g., TDOA) sensor, a pair of portable geolocation sensors and three of more portable geolocation sensors. Adding portable geolocation sensors to the iterative process reduces the constraints on the signals to be located as well as providing a reduction in the number of iterations required to obtain improved location accuracy. | 03-04-2010 |
20100227628 | Advanced Triggers for Location-Based Service Applications in a Wireless Location System - Methods and systems are employed by a wireless location system (WLS) for locating a wireless device operating in a geographic area served by a wireless communications system. An exemplary method includes monitoring a set of signaling links of the wireless communications system, and detecting at least one predefined signaling transaction occurring on at least one of the predefined signaling links. Then, in response to the detection of the at least one predefined network transaction, at least one predefined location service is triggered. | 09-09-2010 |
20100273504 | Network Autonomous Wireless Location System - A Network Autonomous Wireless Location System (NAWLS) is designed to allow for precise location of a mobile device (e.g., a cell phone) without interconnection to, and with minimal disruption of, the local wireless communications network. Using distributed radio network monitors (RNM) and a managed network emulator (NE); mobile devices are sampled, acquired or captured. Once triggered by the RNM or NE, an untethered wireless location system (U-WLS) is used to calculate a precise location. The U-WLS; comprising mobile receiver sites, each capable of self location, exchanging information with other components of the NAWLS, and receiving or exchanging signals from the mobile device; utilizes various network-based and handset-based wireless location techniques dependent on the deployed options. In addition, the NAWLS includes data links interconnecting the U-WLS, NE and RNM. | 10-28-2010 |
20110151839 | Location Intelligence Management System - Collection and analysis of network transaction information which includes the mobile device's usage, location, movements coupled with data from non-wireless network sources allow for the automation of analysis for the detection of anti-social behaviors. | 06-23-2011 |
20110285589 | Network Location and Synchronization of Peer Sensor Stations in a Wireless Geolocation Network - Transmitters are located with a network of sensors by measuring signal characteristics at multiple known locations and processing these measurements at a central node. The sensors communicate their location to the central node along with measured characteristics of the transmitter's signal, and may be required to synchronize with other sensors. Often, GNSS receivers are utilized to locate and synchronize the sensors. However, the GNSS signals may be attenuated by obstructions. In this case, the sensors determine their location by making ranging measurements with sensors that can receive the GNSS signals. The waveform for the wireless backhaul permits this ranging. Additionally, many sensors can determine their location and time synchronize with the geolocation network through reception of signals from other sensors even if they do not have a direct connection to sensors that know their location and are time synchronized. | 11-24-2011 |
20120032854 | INTERFERENCE DETECTION, CHARACTERIZATION AND LOCATION IN A WIRELESS COMMUNICATIONS OR BROADCAST SYSTEM - A Wide Area Sensor Network (WASN) is disclosed that utilizes wideband software defined radios (SDRs) to monitor RF energy over a wide frequency range, detect when critical frequencies are being jammed or otherwise interfered with, and locate the source of the interference so that the interference can be eliminated. The WASN may use one or more geolocation techniques In addition, the WASN may detect and locate unauthorized transmitters as well as estimate the transmitted power of authorized transmitters to assure they are not transmitting more power than authorized. | 02-09-2012 |
20120154213 | Interference Detection, Characterization and Location in a Wireless Communications or Broadcast System - A Wide Area Sensor Network (WASN) is disclosed that utilizes wideband software defined radios (SDRs) to monitor RF energy over a wide frequency range, detect when critical frequencies are being jammed or otherwise interfered with, and locate the source of the interference so that the interference can be eliminated. The WASN may use one or more geolocation techniques In addition, the WASN may detect and locate unauthorized transmitters as well as estimate the transmitted power of authorized transmitters to assure they are not transmitting more power than authorized. | 06-21-2012 |
20120165037 | Robust Downlink Frame Synchronization Schemes in CDMA Wireless Networks for Geo-Location - A wireless location system is configured to operate in a CDMA-based wireless communication network. In exemplary embodiments, location measuring units (LMUs) can synchronize to sectors of base stations and store sector timing information. In response to a request to geo-locate a mobile device communicating with a sector, sector timing information for the servicing sector is sent to other LMUs and the LMUs can use the sector timing information to detect uplink signals transmitted by the mobile device. The location of the mobile device can then be estimated based on time of arrival measurements made by the LMUs. | 06-28-2012 |
20120165038 | Time and Power Based Wireless Location System - Disclosed is a method for processing readily available radio network, timing and power information about cellular networks and typical measurements made by the mobile device and network. A probabilistic method is disclosed that uses both time (i.e., range) and power differences with known downlink transmitter antenna characteristics to locate mobiles with accuracy better than cell-ID with ranging, with high capacity, and without the need for field calibration. | 06-28-2012 |
20120256789 | Diversity Time and Frequency Location Receiver - A Wide Area Sensor Network is disclosed that utilizes wideband software defined radios (SDRs) to provide a capability to monitor the airwaves over a wide frequency range, detect when critical frequencies are being jammed or otherwise interfered with, and locate the source of the interference so that the interference can be eliminated. In addition, a diversity receiver is disclosed. The diversity receiver generates position, time and frequency references for use in locating and synchronizing sensor platforms of a WLS. In an illustrative embodiment, the diversity receiver comprises a first receiver subsystem comprising a terrestrial broadcast receiver, and a common processor platform (CPP) coupled via first link means to the first receiver subsystem. The first receiver subsystem provides a stable time reference and position information to the CPP via the first link means. In addition, the diversity receiver includes second link means for coupling the diversity receiver to a sensor platform and providing time and frequency references and location data to the sensor platform. | 10-11-2012 |
20130310070 | Advanced Triggers for Location-Based Service Applications in a Wireless Location System - Methods and systems are employed by a wireless location system (WLS) for locating a wireless device operating in a geographic area served by a wireless communications system. An exemplary method includes monitoring a set of signaling links of the wireless communications system, and detecting at least one predefined signaling transaction occurring on at least one of the predefined signaling links. Then, in response to the detection of the at least one predefined network transaction, at least one predefined location service is triggered. | 11-21-2013 |
20140342689 | Advanced Triggers for Location-Based Service Applications in a Wireless Location System - Methods and systems are employed by a wireless location system (WLS) for locating a wireless device operating in a geographic area served by a wireless communications system. An exemplary method includes monitoring a set of signaling links of the wireless communications system, and detecting at least one predefined signaling transaction occurring on at least one of the predefined signaling links. Then, in response to the detection of the at least one predefined network transaction, at least one predefined location service is triggered. | 11-20-2014 |
Patent application number | Description | Published |
20100188009 | Multi-Modal Load Control System Having Occupancy Sensing - A multi-modal load control system includes a sensor that operates as an occupancy sensor in a first mode of operation and operates as a vacancy sensor in a second mode of operation. The load control system comprises a load control circuit adapted to be coupled in series electrical connection between an AC power source and an electrical load for controlling the amount of power delivered to the load in response to sensor, which is operable to detect occupancy or vacancy conditions in a space in which the sensor is located. In the first mode of operation, the load control circuit turns the load on when the sensor detects the occupancy condition and turns the load off when the sensor detects the vacancy condition. In the second mode of operation, the load control circuit turns the load off when the sensor detects the vacancy condition and does not turn the load on when the sensor detects the occupancy condition. | 07-29-2010 |
20100241255 | Method of Semi-Automatic Ballast Replacement - The present invention relates to a semi-automatic method of replacing a ballast within a lighting control system, such that the new replacement ballast can operate in the same manner as the ballast that was replaced. If multiple ballasts in a lighting control system are removed from the system and multiple new ballasts are installed to replace those ballasts, any operational configurations such as group configurations or area information associated with each removed (missing) ballast must be assigned to the proper new replacement ballast. The semi-automatic replacement method relies upon the operational configurations of the removed ballast to help a user identify which new ballast should replace each missing ballast. | 09-23-2010 |
20130285472 | MULTI-MODAL LOAD CONTROL SYSTEM HAVING OCCUPANCY SENSING - A multi-modal load control system includes a sensor that operates as an occupancy sensor in a first mode of operation and operates as a vacancy sensor in a second mode of operation. The load control system comprises a load control circuit coupled in series between an AC power source and an electrical load for controlling the amount of power delivered to the load in response to sensor, which is operable to detect occupancy or vacancy conditions in a space in which the sensor is located. In the first mode, the load control circuit turns the load on when the sensor detects the occupancy condition and turns the load off when the sensor detects the vacancy condition. In the second mode, the load control circuit turns the load off when the sensor detects the vacancy condition and does not turn the load on when the sensor detects the occupancy condition. | 10-31-2013 |
20140282172 | SYSTEM AND METHOD FOR GRAPHICALLY DISPLAYING ENERGY CONSUMPTION AND SAVINGS - A system for displaying the consumption of electrical energy by an electrical energy consumer in a graphical format. An amount of electrical energy saved is the difference between a reference amount of the electrical energy capable of being consumed by the consumer and an actual amount of the electrical energy consumed by the consumer, wherein the reference amount is determined either from a peak amount of power consumed during a preset window of time during which the consumer utilizes electrical energy, or by an average amount of power consumed during the preset time window. A visual display provides an electronic representation of the amount of the electrical energy consumed and the amount of the electrical energy saved in a graphical format. | 09-18-2014 |
20150015377 | CONFIGURING COMMUNICATIONS FOR A LOAD CONTROL SYSTEM - A load control system may include multiple control devices that may send load control messages to load control devices for controlling an amount of power provided electrical loads. To prevent collision of the load control messages, the load control messages may be transmitted using different wireless communication channels. Each wireless communication channel may be assigned to a load control group that may include control devices and load control devices capable of communicating with one another on the assigned channel. A control device may send load control messages to a load control device within a transmission frame allocated for transmitting load control messages. The transmission frame may include equal sub-frames and load control messages may be sent at a random time within each sub-frame. Control devices may detect a status event within a sampling interval to offset transmissions from multiple control devices based on detection of the same event. | 01-15-2015 |
20160056629 | LOAD CONTROL SYSTEM RESPONSIVE TO LOCATION OF AN OCCUPANT AND MOBILE DEVICES - A load control system may control an electrical load in a space of a building occupied by an occupant. The load control system may include a controller configured to determine the location of the occupant, and a load control device configured to automatically control the electrical load in response to the location of the occupant. The load control system may also include a mobile device adapted to be located on or immediately adjacent the occupant and configured to transmit and receive wireless signals. The load control device may be configured to automatically control the electrical load when the mobile device is located in the space. The load control system may further comprise an occupancy sensor and the load control device may automatically control the electrical load when the occupancy sensor indicates that the space is occupied and the mobile device is located in the space. | 02-25-2016 |