Patent application number | Description | Published |
20100067434 | QUICK SYSTEM SELECTION AND ACQUISITION FOR MULTI-MODE MOBILE DEVICES - Methods and apparatus for using network topology and coverage information from one radio access technology (RAT) network to assist acquisition of another different RAT network for a multi-mode mobile station (MS), such as acquiring a WiMAX (Worldwide Interoperability for Microwave Access) network based on topology and coverage information about a 3G (Third Generation) network and vice versa, are provided. Base station (BS) acquisition assisted in this manner may provide for quick restoration of a previously interrupted or deactivated network service, while decreasing the power consumption of the multi-mode MS during a power savings state because periodic scanning and registration need not occur. | 03-18-2010 |
20100267386 | METHODS AND APPARATUS FOR FACILITATING HANDOFF BETWEEN A FEMTOCELL BASE STATION AND A CELLULAR BASE STATION - A user may enter information about a cellular base station into a femtocell base station. A user may enter information about a femtocell base station into a subscriber station. A femtocell base station may receive a neighbor list from a cellular base station, and broadcast the neighbor list to subscriber stations that are located within a coverage area of the femtocell base station. When a subscriber station is being served by a femtocell base station, the subscriber station may receive a neighbor list from the femtocell base station and scan for potential handoff candidates using the neighbor list. When a subscriber station is being served by a cellular base station, the subscriber station may scan for potential handoff candidates using a neighbor list received from the cellular base station and also using the femtocell base station information that the user entered. | 10-21-2010 |
20100278151 | METHODS AND SYSTEMS USING EFFICIENT RANGING MESSAGE TRANSMISSION DURING INITIAL RANGING - Techniques for efficient transmission of messages in a ranging procedure between a mobile station (MS) and a base station (BS) are provided. The techniques may allow efficient bandwidth allocation for the ranging procedure. | 11-04-2010 |
20120039167 | SYSTEM, APPARATUS, AND METHOD FOR IMPROVING REDIAL PERFORMANCE IN WIRELESS COMMUNICATION SYSTEMS - In accordance with aspects of the disclosure, a method, apparatus, and computer program product are provided for wireless communication. The method, apparatus, and computer program product may be configured to acquire a first wireless network for data packet communication on a first radio access technology, request service for a voice call from a second radio access technology via a data tunnel provided by the first radio access technology, determine a failure in obtaining the requested service for the voice call, attempt to re-acquire the first radio access technology and redial the voice call via the first radio access technology in response to determining the failure, obtain the requested service for the voice call if performing of the attempt was less than or equal to a threshold, and acquire a second wireless network via the second radio access technology if performing of the attempt was greater than the threshold. | 02-16-2012 |
20130069828 | LOCATION BASED DETERMINATION TO PERFORM A RANGING PROCEDURE - Methods and systems are described for using location-based information to determine whether to perform a ranging procedure. A change in location of a device is identified. The identified change in location represents the distance the device has moved during an interval between ranging procedures. The identified change in location is analyzed to determine whether the change exceeds a threshold distance. If the change in location does not satisfy the threshold distance, a change in a signal quality metric of the device from the location associated with the previously performed ranging procedure to the current location is identified. The identified change in signal quality metric is analyzed to determine whether the change exceeds a threshold value. If the change in location of the device is less than the threshold distance and the change in the signal quality metric is less than the threshold value, the next scheduled ranging procedure is bypassed. | 03-21-2013 |
20130095840 | ENHANCEMENT OF DEDICATED RANGING IN RESPONSE TO PAGE MESSAGES FOR A MOBILE STATION - Certain embodiments of the present disclosure present methods and apparatuses for enhancing the dedicated ranging procedure. Certain embodiments improve probability of correct reception of a ranging code from a mobile station by accumulating two or more copies of the ranging code received from the MS on two or more different frames in a transmit opportunity. Certain aspects improve probability of correct reception of the ranging code by modifying timing of uplink transmission. | 04-18-2013 |
20130109386 | DYNAMICALLY POPULATING MEDIA INDEPENDENT HANDOVER (MIH) INFORMATION SERVICE DATABASE | 05-02-2013 |
20130183981 | METHODS AND APPARATUS FOR IMPROVING CELL REDIRECTION SEARCH TIME - Aspects of the present disclosure provides methods, corresponding apparatus and program products, for improving LTE to another network (e.g., Wideband Code Division Multiple Access, WCDMA) redirection search time. A user equipment (UE) may receive a redirection message indicating a frequency for a potential target cell and may attempt to acquire a target cell based on the frequency indicated in the redirection message. IF the UE's attempt to acquire a target cell based on the indicated frequency fails to find a suitable target cell, the UE may attempt to find a suitable target cell using a heuristic approach involving one or more frequencies different than the frequency indicated in the redirection message. | 07-18-2013 |
20130260736 | APPARATUS AND METHOD FOR SIGNALING NETWORK CAPABILITIES FOR A WIRELESS DEVICE - Methods and apparatus for wireless communication in a wireless communication network include maintaining a Public Land Mobile Network (PLMN) list and receiving an information request from a network, wherein the information request is associated with configuration parameters associated with the PLMN list. Aspects of the methods and apparatus configuring the UE based on the configuration parameters associated with the PLMN list. Aspects also include replying to the network that the UE is configured with the configuration parameters associated with the PLMN list. | 10-03-2013 |
20140177429 | TECHNIQUES FOR REDUCING NETWORK CONGESTION IN A WIRELESS COMMUNICATIONS SYSTEM - Methods, systems, and devices are described for reducing congestion in a wireless communications system. A second connection failure is detected, and a difference between a timestamp of the second connection failure and a timestamp of a first connection failure is calculated. Upon determining that the difference satisfies a first time threshold, information relating to one or more previous connection failures is cleared. A time period is identified. A number of connection failures from a cell that occur during the time period is identified. A determination is made as to whether the number of connection failures satisfies a threshold. Upon determining that the number of connection failures satisfies the threshold, a future connection request may be withheld for a time period. | 06-26-2014 |
20140315548 | METHODS AND APPARATUS FOR ACCESS CLASS BARRING FOR VOIP CALLS - Certain aspects of the present disclosure relate to methods and apparatus for transmission restriction. An exemplary method generally includes initiating a mobile originating (MO) call, determining availability of parameters for a first access gating mechanism for determining whether to bar or allow transmission of the MO call, selecting the first access gating mechanism or a second access gating mechanism, based on the determination of the availability of the parameters, and applying the selected gating mechanism to determine whether to bar or allow the MO call. | 10-23-2014 |