Patent application number | Description | Published |
20120140644 | METHODS AND APPARATUS FOR PROVIDING ROBUST CIRCUIT SWITCH FALL BACK PROCEDURE - A method, an apparatus, and a computer program product for wireless communication are provided in which a user equipment (UE) may obtain at least one of a plurality of circuit switched fall back (CSFB) parameters from at least one of an LTE eNodeB or a usable system, wherein the plurality of CSFB parameters comprise a channel list, a system time, and a neighbor list, and may perform one or more system acquisition actions based on the at least one of the plurality of obtained CSFB parameters. | 06-07-2012 |
20120225649 | SYSTEM FOR BETTER SERVICE RESELECTION WHEN ON OTHER THAN THE MOST PREFERRED SYSTEM - System for better service reselection when on other than the Most Preferred system. In various aspects, methods and corresponding apparatus are provided for a service reselection system that operates on a device to provide better service reselection during idle mode, origination mode and active traffic mode. A method includes detecting entry into slotted mode operation on a Less Preferred system, waiting for page monitoring to complete at selected slot cycle wakeup times, performing a service reselection scan at the selected slot cycle wakeup times to find More Preferred systems, wherein the service reselection scan is performed after the page monitoring has completed, and limiting a time duration of the service reselection scan so as to avoid interference with the page monitoring to be performed at slot cycle wakeup times that follow the selected slot cycle wakeup times. | 09-06-2012 |
20120258710 | WORLD MODE SCANNING CONTROL - A method and apparatus for world-mode devices capable of managing technology selection for multimode roaming between existing access technologies, as well as possible future access technologies, in a manner that eliminates wasteful scanning for non-existent systems and reduces roaming charges is disclosed. The method allows the device an opportunity to reacquire its home system before scanning for available roaming network resources in a prioritized manner that mitigates roaming costs, while conserving power and acquisition delays by eliminating scanning for non-existent system types. A minimum OOS duration is imposed on a home system before acquisition of a roaming partner to provide more time to re-acquire the home system. Preferred partner scanning and acquisition reduces roaming charges, while scanning for non existent systems is eliminated altogether. | 10-11-2012 |
20130090117 | METHOD AND APPARATUS FOR OPTIMIZED REACQUISITION OF WIRELESS COMMUNICATIONS SYSTEMS - Motion status states reported by an advanced motion detection process or other means of obtaining a movement state of Stationary or Non-Stationary from filtered accelerometer data are utilized to reacquire service during Out of Service scenarios. Both movement states operate in three power phases: aggressive scanning or normal power mode, slow scanning or moderate power mode, and deep sleep or power saving mode. The scanning rate, power mode, scanning period and/or channel list depend upon the movement state and power phase. Motion information obtained from an advanced motion detection process provides substantial improvements in service reacquisition performance and power consumption in stationary Out of Service scenarios. When compared to traditional service reacquisition scanning routines, the reductions in average current can be achieved of: at a 5-minute OOS mark, ˜45% reduction, at a 15-minute OOS mark, ˜60% reduction and at a 6-hour OOS mark, ˜50% reduction. | 04-11-2013 |
20130090151 | METHOD AND APPARATUS FOR ADVANCED MOTION DETECTION IN WIRELESS COMMUNICATIONS SYSTEMS - Advanced Motion Detection in Wireless Communication Systems processes accelerometer or other sensor input data to distinguish between random in-place movements and actual start of motion that could produce a change in the user's location by filtering unsustained random motion. Random in-place motion such as table banging, knee jiggling, vibration, etc. are filtered out from Stationary and Non-Stationary motion state determinations. The process utilizes data from motion sensors or any accelerometer standard in all smart mobile devices and any mobile device that has automatic portrait-landscape switching (screen rotation). A state machine processes sensor or other input to produce a filtered Stationary or Non-Stationary output movement state unaffected by transient motion or rest periods. A sensor processing subsystem (SPS), or other low power processor for processing sensor or other input may be implemented to reduce power consumption and processing overhead while, for example, a modem processor or other high power processor is in a sleep mode. | 04-11-2013 |
20130100885 | SELECTIVELY INVOKING RECEIVE DIVERSITY DURING POWER-UP/INITIAL ACQUISITION AND OUT OF SERVICE MODES - Methods and apparatus for selectively invoking receive diversity during power-up/initial acquisition and out of service modes are disclosed. A method can include selectively enabling receive diversity based on an initial acquisition attempt by one of the receive chains in a wireless device having multiple receive chains. A method can also include enabling receive diversity based on a predetermined list of channels to be acquired. A predetermined list of channels is a subset of a plurality of channels that may be acquired. Other aspects, embodiments, and features are also claimed and described. | 04-25-2013 |
20130102316 | METHOD AND DEVICE FOR ANTENNA SEARCHING WITH ANTENNA SELECTION - Methods, devices, and computer program products for antenna searching with antenna selection are disclosed. In one aspect, an apparatus operable in a wireless communication system includes a first receiver, a second receiver, and a processor. The first receiver receives a first signal including pilot signals from a first antenna. The second receiver receives a second signal including pilot signals from a second antenna. The processor, while a receive diversity is enabled, demodulates the first and second signals, determines whether a first condition is satisfied, and, in response to determining that the first condition is satisfied, searches for pilot signals via the second receiver and not the first receiver. The first condition is satisfied when a signal strength of the first signal does not exceed a first threshold and a signal strength of the second signal exceeds a second threshold. | 04-25-2013 |
20130252607 | APPARATUS AND METHOD FOR DYNAMIC PILOT ACQUISITION IN A WIRELESS COMMUNICATION SYSTEM - An access terminal configured for use in a wireless communication system utilizing discontinuous reception (DRx). To reduce power consumption, a pilot acquisition timeline may be reduced when channel conditions are favorable; and to improve call quality, the pilot acquisition timeline may be increased when channel conditions are poor. Other aspects, embodiments, and features are also claimed and described. | 09-26-2013 |
20130308554 | SYSTEMS, APPARATUS, AND METHODS FOR ANTENNA SELECTION - This disclosure provides systems, methods, and apparatus for mobile transmit diversity. In one aspect, a wireless communication apparatus is provided. The wireless communication apparatus includes a plurality of antennas. The wireless communication apparatus further includes a plurality of transmit circuits, each transmit circuit of the plurality of transmit circuits being configured to transmit according to a different radio access technology. The wireless communication apparatus further includes a controller configured to selectively switch each of the transmit circuits of the plurality of transmit circuits to transmit wireless communications via a corresponding one of the plurality of antennas based on priority levels of data for each of the transmit circuits and a detected operating mode of the wireless communication apparatus. | 11-21-2013 |
20130309981 | SYSTEMS, APPARATUS, AND METHODS FOR ANTENNA SELECTION - This disclosure provides systems, methods, and apparatus for mobile transmit diversity. In one aspect, a wireless communication apparatus is provided. The wireless communication apparatus includes a transmit circuit configured to transmit wireless communications via either a first antenna or a second antenna. The wireless communication apparatus further includes a receive circuit configured to receive wireless communications using either the first antenna or the second antenna. The wireless communication apparatus further includes a controller configured to switch the transmit circuit and the receive circuit from transmitting and receiving wireless communications via the first antenna to transmit and receive wireless communications via the second antenna in response to detecting that a first receive power level of the first antenna is less than a second receive power level of the second antenna and a difference between the second receive power level and the first receive power level is greater than a threshold. | 11-21-2013 |
20140200046 | APPARATUS AND METHOD FOR MITIGATING VOLTAGE DROOP IN DUAL-TRANSCEIVER WIRELESS COMMUNICATION DEVICE - Aspects of the present disclosure relate to a user equipment (UE) and a method of wireless communication using the UE that includes a first transceiver and a second transceiver. The method includes determining that the first transceiver is scheduled to communicate using a first transmission simultaneous to the second transceiver being scheduled to communicate using a second transmission, and altering an operation of at least one of the first and second transceivers to mitigate battery voltage droop due to simultaneous transmissions of the transceivers. Other aspects, embodiments, and features are also claimed and described. | 07-17-2014 |