摘要:
27A central database is provided on an external device, such as a personal data assistant (PDA), that is used for local phone number translation. A communications link is provided between a mobile telephone and the central database to allow accessing and indexing of the central database. The mobile telephone obtains identification information from a base station upon which the mobile telephone is camped. The communications link is used to extract local phone number translation information from the central database by indexing with the identification information to obtain corresponding local phone number translation information. The mobile telephone then provides local phone number translation using the local phone number translation information.
摘要:
Techniques, systems and methods for concurrent data and signaling for WiMAX handover are disclosed herein. The serving base station may receive a handover request message from a mobile station and transmit a parameter to the mobile station to indicate a time to suspend a first set of one or more service flows between the serving base station and the mobile station during a handover procedure and continue data exchange between the mobile station and the serving base station for a second set of one or more service flows during the handover procedure. The proposed techniques reduce the service suspension time during the handover procedure.
摘要:
Techniques, systems and methods for concurrent data and signaling for WiMAX handover are disclosed herein. The serving base station may receive a handover request message from a mobile station and transmit a parameter to the mobile station to indicate a time to suspend a first set of one or more service flows between the serving base station and the mobile station during a handover procedure and continue data exchange between the mobile station and the serving base station for a second set of one or more service flows during the handover procedure. The proposed techniques reduce the service suspension time during the handover procedure.
摘要:
A cellular device connects with a network of base stations. Each base station covers a corresponding service area, and broadcasts unique identifying information in a standard manner. A portable computing platform is used as a POI database and server for the cellular device, and establishes a communications link with the cellular device. A trip scheduler is provided in the cellular device that interfaces with the POI database server over the communications link to enable a user to extract POI data from the POI database. The POI data includes a POI identifier for a POI, and a related base station identifier that uniquely identifies a target base station having a service area that covers the POI. The cellular device monitors base stations to determine when the cellular device enters into the service area of the target base station, and then provides an alert to the user indicative of the POI.
摘要:
A method of locating a mobile station that is turned off. The method includes turning off the mobile station while keeping a battery of the mobile station intact in the mobile station. The mobile station enters a soft power-off mode after the mobile station has been turned off if the battery of the mobile station has sufficient energy. The mobile station receives paging request messages from at least one base station and the mobile station measures RSSI levels for received paging request messages. The mobile station then selects a current base station for which the mobile station measures a strongest RSSI level. The mobile station handshakes with the current base station to enable the mobile station to camp on the current base station. Next, the mobile station reports its location to the current base station and the current base station informs authorities of the location of the mobile station.
摘要:
A method of using power measurements from base stations to calculate position of a mobile station. The method includes providing position coordinates for a plurality of base stations in a mobile phone network, measuring Received Signal Strength Indicator (RSSI) levels of nearby base stations with a mobile station, identifying three base stations for which the mobile station measures strongest RSSI levels, the mobile station receiving the position coordinates of the three identified base stations, calculating a curved path of possible positions of the mobile station for each of the three identified base stations according to the measured RSSI levels of each of the three identified base stations, and calculating the position of the mobile station based on the position coordinates of the three identified base stations and the three curved paths of possible positions of the mobile station.
摘要:
A method for receiving public broadcast services with a wireless device compatible with the Global System for Mobile communications (GSM) protocol is disclosed. The method includes performing a radio frequency (RF) scan on all frequencies in at least one predetermined frequency band to identify all possible Broadcast Control Channels (BCCHs), measuring Received Signal Strength Indicator (RSSI) levels for each BCCH, and sorting the BCCHs according to the corresponding RSSI levels. The wireless device next selects a BCCH having a strongest average RSSI level and camps on a cell corresponding to the selected BCCH. The wireless device is then able to receive GSM public broadcast services from a mobile phone network operating the selected BCCH irrespective of whether the wireless device subscribes to the mobile phone network.
摘要:
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.
摘要:
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.
摘要:
Methods and apparatus for waking a mobile station (MS) from a power saving mode to receive a media access control (MAC) management message (e.g., DCD/UCD, MOB_NBR-ADV, and SII-ADV) the MS has not yet received. The MS may wake from the power saving mode after detecting a mismatch between a set of media access control (MAC) management message parameters last received by the MS and the information found in an enhanced broadcast control pointer information element (BCP-IE) transmitted in a downlink map (DL-MAP). In this manner, the MS may be prevented from waking up unnecessarily, thereby providing high power efficiency.