A method and system for transmitting a position information from a mobile terminal of a mobile communication network via a network element to a network node, wherein a control information indicating the requirement of a position information of the mobile terminal at the network node is set in the radio interface message. This control information is checked at the network element as to whether a position information has to be forwarded or not. The position information is determined at the network element and may be combined with a higher layer information so as to generate a complete higher layer information to be forwarded to the network node. Thereby, a position information can be supplied to the network node without substantially increasing overhead and processing power required for the radio interface message.

A system and method for determining the geographic location of a mobile station in a mobile telephone system is disclosed. The system broadcasts a series of forward link triangulation signals from an array of base transceiver stations, so that a mobile station may determine the differential times of arrival, and thereby the mobile station's location.

A method of locating a mobile station is provided. In the present invention, the mobile station is capable of communicating with at least three base stations, each having at least two antennas. To estimate the location of the mobile station, the distance between the mobile station and each base station is calculated based on the time of arrival (TOA) of a mobile station signal at the base station, a first estimated MS location area is defined as an overlap area of circles of which the radiii are the distances between the MS and the base stations. Then, the location of the mobile station is estimated based on the time of signals received through the two antennas of each base station and based on the angle between the antennas of each base station and the mobile station. Here, the angle is calculated from the phase difference between the received signals and a communication frequency of the signals. A second location area is defined as an area defined by lines connecting the base stations to the mobile station. Then, the MS is determined to be located in a common area of the first and the second location areas.

A door security system for use in conjunction with a building having an existing doorway, for providing enhanced security to the occupants of the building. The door security system has a steel door hingeably attached to a steel doorframe. The steel door has a plurality of evenly spaced steel vertical rods, and a plurality of metal plates which overlay and are attached to the vertical rods, thereby conferring great strength to the door. The central plate has two deadbolt locks, and a cover plate in proximity to the deadbolt locks. The cover plate prevents an individual from inserting an object between the door and the doorframe, in an attempt to push the lock bolts from their corresponding bolt recesses within the doorframe. The door security system may be installed within any suitably sized doorway within the existing building to provide a sense of security to the occupants.

A system for TOA positioning of a GPRS mobile station (20) in a GSM network (10) comprises a Gateway GPRS Support Node (GGSN) (32) providing an interface to an LCS application (52) and adapted to communicate with the GPRS mobile station (20). The system further comprises a Base Station Subsystem (14) serving the GPRS mobile station (20). The BSS (14) is communicably accessible by the LCS application (52) through the GGSN (12). The system also comprises a plurality of Location Management Units predisposed about the GSM network (10) and configured to be utilized to measure the TOA of an access burst delivering positioning coordinates corresponding to an approximate position for the GPRS MS (20). A Packet Control Unit (16) is provided and adapted to communicate directly with LMUs (44) that are GPRS capable and indirectly with non-GPRS LMUS (44) through the BSS (14).