Patent application number | Description | Published |
20080261615 | APPARATUS, SYSTEM AND METHOD FOR DETERMINING A GEOGRAPHICAL LOCATION OF A PORTABLE COMMUNICATION DEVICE - A wireless access point receives a reverse link (RL) wireless wide area network (WWAN) signals from a wireless communication device and forwards wireless local area network (WLAN) location information related to the received RL WWAN signal to a position determining entity (PDE). The PDE uses the WLAN location information and, in some cases, other location information to determine the geographical location of the wireless communication device. The WLAN location information is any information that at least assists the PDE in determining the geographical location of the wireless communication device and may include any combination of data related to signal strength of the WWAN RL signal, a propagation time of WWAN RL signal, a distance between the access point and the wireless access point, a geographical location of the access point, and/or a geographical location of the wireless communication device. | 10-23-2008 |
20080279168 | SYSTEM AND METHOD FOR BROADCASTING OVERHEAD PARAMETERS IN POOR COVERAGE REGIONS - To improve WWAN coverage, an access node broadcasts overhead messages on a first channel covering a first channel environment and a second channel covering a second channel environment within a coverage region. The overhead messages carry network overhead parameters for allowing wireless mobile devices to acquire and maintain traffic channels within the cellular system. The overhead message channels are configured so that a user perceives uninterrupted wireless services while moving through different channel environments in the coverage region. In one embodiment, the overhead message channels are separate physical channels configured with different broadcast parameters to provide coverage in different environments. In another embodiment, the overhead parameter information is segregated into base and extended components that are encoded and layer modulated onto separate logical channels. Using layered modulation, wireless mobile devices can receive base components in poor coverage regions. The base components include overhead parameters for acquiring a WWAN channel. | 11-13-2008 |
20080280630 | SYSTEM AND METHOD FOR BROADCASTING PAGE MESSAGES IN POOR COVERAGE REGIONS - A system and method for paging wireless mobile devices selectively varies the effective modulation order of a paging channel to achieve improved coverage in a wireless wide area network (WWAN) cell. In one embodiment, the paging channel modulation order is selected based on a measured signal strength and/or common channel error rate. The selected modulation order is directly related to the quality of the channel environment. In another embodiment, a page message is segregated into base and extended components that are layer modulated. With layered modulation, wireless mobile devices in good coverage regions can successfully demodulate both the base and extended components to recover the entire page message. Wireless mobile devices in poor coverage regions can successfully demodulate the base component of the page message, and then request that the extended component of the page message be re-broadcast as a base component to thereby recover the entire page message. | 11-13-2008 |
20080311930 | METHOD AND APPARATUS FOR IMPLEMENTATION OF AD HOC MESH NETWORK - By using current positions or predictions of future positions of mobile wireless communication devices, the performance of an ad hoc mesh network is improved. Current positions and predictions of future positions can be used to determine when to set up communication channels between devices. Current and future positions can be determined by the use of a Global Positioning System (GPS) Receiver or other position-determining devices. The GPS Receiver uses signals received from Satellites to determine current position, velocity and acceleration of a mobile wireless communication device. The predictions using current position, velocity and acceleration can be further improved by using devices that “know” the final destination or route of the mobile wireless communication device. An example of such a device would include, but not be limited to, automobile navigation systems that use internal maps and GPS Receivers to guide a driver to a final destination. | 12-18-2008 |
20090052375 | HIERARCHICAL MODULATION REVERSE LINK INTERFACE NODE - A wireless communication device transmits a hierarchically modulated reverse link (RL) WWAN signal comprising a lower modulation order component and a higher modulation order component. An interface node receives and demodulates the hierarchical modulated signal to recover the extended data sent with the higher modulation order component. The interface node sends extended data to a base station that is unable to recover the higher modulation order component from the UE device. | 02-26-2009 |
20090052394 | HIERARCHICAL MODULATION REVERSE LINK INTERFACE NODE PROVIDING MULTIPLE SERVICE LEVELS - A wireless communication device transmits a hierarchically modulated reverse link (RL) WWAN signal comprising a lower modulation order component corresponding to first service level data and a higher modulation order component corresponding to second service level data. An interface node receives and demodulates the hierarchical modulated signal to recover second service level data. The interface node sends second service level data to a recipient. | 02-26-2009 |
20090213819 | APPARATUS, SYSTEM AND METHOD FOR INITIATING WLAN SERVICE USING BEACON SIGNALS - An access point transmits a beacon signal when a multimode communication device is within a maximum proximity of the access point. A wireless wide area network (WWAN) receiver in the access point monitors a WWAN uplink channel used by the multimode wireless communication device to communicate with a WWAN base station. The access point determines, or at least estimates, a proximity of the multimode communication device to the access point based on a received WWAN uplink signal transmitted by the multimode wireless communication device. If the proximity is less than a proximity threshold, the access point transmits the beacon signal. The beacon signal at least indicates the presence of the access point and, in some circumstances, includes instructions or information to assist in a handoff from the WWAN to the WLAN. | 08-27-2009 |
20090215400 | PILOT SIGNAL TRANSMISSION MANAGEMENT - A base station transmits a pilot signal when the presence of a wireless communication device is detected. A wireless device detector receives a detection signal transmitted from a wireless communication device to determine the presence of the wireless communication device. | 08-27-2009 |
20100020779 | DATA ROUTING THROUGH LOCAL NETWORK CONNECTED TO A BASE STATION - A base station routes data between a wireless communication device and a local device through a local network. When a route-local indicator is received from the wireless communication device, the base station routes data through the local network to the local device without routing the data through a cellular network. Accordingly, the physical path of the data includes the base station and the local network and does not include cellular equipment other than the base station. | 01-28-2010 |
20100054205 | HANDOFF MANAGEMENT FOR MULTIMODE COMMUNICATION DEVICES BASED ON NON-TRAFFIC STATE UPLINK SIGNALS - An access node receives a non-traffic state WWAN uplink signal transmitted from a multimode wireless communication device to a base station. In response to the reception of the non-traffic state uplink signal, the base station transmits a search message to the multimode wireless communication device to adjust a searching scheme. The WWAN can be notified of the reception of the non-traffic state WWAN uplink signal by a device proximity message that is sent by the access node to the WWAN in response to the reception of the non-traffic state WWAN uplink signal. | 03-04-2010 |
20100054206 | HANDOFF MANAGEMENT BASED ON NON-TRAFFIC STATE UPLINK SIGNALS - A detecting base station receives a non-traffic state uplink signal transmitted from a wireless communication device to an originating base station. The originating base station transmits a search message instructing the wireless communication device to search for an alternate base station. | 03-04-2010 |
20100118834 | DEVICE BEACON FOR COMMUNICATION MANAGEMENT FOR PEER TO PEER COMMUNICATIONS - A wireless communication device transmits a device beacon in accordance with a system timing of a wireless wide area network (WWAN). For one example, the beacon is transmitted relative to WWAN uplink channels of the time-frequency space of the uplink WWAN channel assignment. In response to the reception of the device beacon by another wireless communication device, a peer to peer communication session is established. | 05-13-2010 |
20100118841 | DEVICE BEACON FOR HANDOFF MANAGEMENT OF HANDOFFS TO BASE STATIONS - A detecting base station comprises a device beacon detector that is configured to apply wireless wide area network (WWAN) system timing to receive a device beacon transmitted by a wireless communication device in accordance with the WWAN system timing and outside of a WWAN uplink channel. The detecting base station may include a wireless wide area network (WWAN) interface configured to receive the WWAN system timing from the WWAN. | 05-13-2010 |
20100118842 | DEVICE BEACON FOR HANDOFF MANAGEMENT OF HANDOFFS TO ACCESS NODES - An access node receives a device beacon transmitted from a wireless communication device in accordance with a system timing of a wireless wide area network (WWAN). When transmitted within a WWAN uplink channel, the device beacon is mapped to designated beacon channels within the time-frequency space of the uplink WWAN channel assignment. In response to the reception of the device beacon, communications between the wireless communication device and the access node are established. In one example, the access node is a femtocell base station. In another example, the access node is a wireless local area network (WLAN) access point. | 05-13-2010 |
20100172315 | SYSTEM SCANNING METHOD AND ARRANGEMENT FOR MOBILE WIRELESS COMMUNICATION DEVICES - An exemplary method for searching one of a plurality of systems on a multi-mode device capable of communicating on a first air interface technology and a second air interface technology is disclosed. The exemplary method includes storing a default system search period for one of the air interface technologies, such as WLAN system, receiving user input representative of a user-defined system search period for the WLAN system, storing the user-defined system search period, detecting a system search event for WLAN services, searching WLAN services in response to the system search event, and terminating the WLAN system search after expiration of the user-defined search period. | 07-08-2010 |
20100216461 | DETECTION OF WIRELESS COMMUNICATION DEVICES IN SYSTEMS HAVING CELLS WITH DIFFERENT PILOT SIGNAL FREQUENCIES - An originating transceiver node sends a search message to an alternate transceiver node in response to receiving a pilot signal report message from a wireless communication device detecting a pilot signal from a detected transceiver node. The wireless communication device detects a strong pilot signal transmitted from the detected transceiver node at the same frequency used for the pilot signal transmitted by the originating transceiver node. The alternate transceiver node transmits a pilot signal at a second frequency. The pilot signal report message allows the originating transceiver node to determine at least an approximate location of the wireless communication device and to identify the alternate transceiver node as a transceiver node at least potentially able to provide wireless service to the wireless communication device. In response to the search message, the alternate transceiver node searches for uplink signals associated with a pilot signal having the first frequency. If uplink signals transmitted from the wireless communication device are detected by the alternate base station, a determination is made whether handoff to the alternate transceiver node should be performed. In some situations, the originating transceiver node may transmit a change uplink format message to the wireless communication device where the new uplink format increases the likelihood of detection of the uplink signals by the alternate transceiver node. | 08-26-2010 |
20110110325 | CONTROL CHANNEL MANAGEMENT - A controlling base station sends, to a wireless communication device, control data related to communication between a communication base station and the wireless communication device. The control data is transmitted in accordance with a communication specification and is transmitted to allow reception by the wireless communication device of the control data within a control channel having a frequency and time allocated by the communication specification for the wireless communication device to receive control data transmissions from the communication base station. | 05-12-2011 |
20110235615 | MANAGEMENT OF WLAN AND WWAN COMMUNICATION SERVICES TO A MULTI-MODE WIRELESS COMMUNICATION DEVICE - A mesh network communication system includes a plurality of access points connected to a wireless local area network (WLAN) controller where at least one of the plurality access points is a detection access point (DAP) that receives reverse link (RL) wireless wide area network (WWAN) signals transmitted from a multi-mode wireless communication device. Based on an intercepted RL WWAN signal, the DAP forwards reverse link (RL) information to the WLAN controller. Based on the RL information, the WLAN controller generates and sends, to the WWAN communication system, a device to access point association list (device-AP association list) comprising one or more device identifiers associated with one or more target access point identifier. The device identifier uniquely identifies a multi-mode wireless communication device within a maximum proximity of a target access point identified by the target access point identifier. The WWAN system applies the device-AP association list to efficiently manage handoffs from the WWAN system to access points in the mesh network. | 09-29-2011 |
20120275427 | DEVICE BEACON FOR HANDOFF MANAGEMENT OF HANDOFFS TO ACCESS NODES - An access node receives a device beacon transmitted from a wireless communication device in accordance with a system timing of a wireless wide area network (WWAN). When transmitted within a WWAN uplink channel, the device beacon is mapped to designated beacon channels within the time-frequency space of the uplink WWAN channel assignment. In response to the reception of the device beacon, communications between the wireless communication device and the access node are established. In one example, the access node is a femtocell base station. In another example, the access node is a wireless local area network (WLAN) access point. | 11-01-2012 |