Abstract:
A method for allowing a radiotelephone to scan for alternate radiotelephone systems, where each cellular radiotelephone system is within a corresponding geographic area and each cell has a base station providing paging and voice communication, includes a first step of registering the radiotelephone on a radiotelephone system. A next step includes establishing whether alternate technology scanning has been enabled for the radiotelephone. If alternate technology scanning is disabled, the radiotelephone receives paging messages from the base station and acknowledges the paging messages addressed to the radiotelephone. If alternate technology scanning is enabled, the radiotelephone scans for an alternate technology while the base station repeats any paging messages addressed to the radiotelephone and ignores a lack of acknowledgement from the radiotelephone for paging messages addressed to the radiotelephone.
Abstract:
A method for determining location technology supported by a wireless communications network including sending (505) a location request, for example a MO-LR request, from a mobile wireless subscriber device to the network, receiving a network response (515) in reply to the location request, determining the subscriber device location technology supported by the network from the network response (535,550), and in some embodiments the location technology of the subscriber device is controlled based on the technology supported by the network.
Abstract:
The present invention provides a method and apparatus for generating time of arrival estimates for use by a wireless communication network for locating the position of a wireless or mobile source (102) within the service area of the wireless communication network. The mobile source generates time of arrival estimates from data bursts received from base sites (100) operating within the network. In at least one embodiment, the mobile source (102), then, communicates the time of arrival estimates for each of the base sites (100) to the network, from which the location of the mobile source (102) is determined. In at least some instances, the mobile units additionally determine a variance estimate for each time of arrival estimates, which is representative of the degree of confidence in the time of arrival information being supplied to the network.
Abstract:
A method for determining location technology supported by a wireless communications network including sending ( 505 ) a location request, for example a MO-LR request, from a mobile wireless subscriber device to the network, receiving a network response ( 515 ) in reply to the location request, determining the subscriber device location technology supported by the network from the network response ( 535, 550 ), and in some embodiments the location technology of the subscriber device is controlled based on the technology supported by the network.