Patent ID: 8625453

Claim:
A method for maintaining a telephone call between mobile repeater telephones in an ad-hoc network, which method comprises: comparing positions of the mobile repeater telephones according to its PS receiver (positioning system receiver) to data about the topography of the area of the ad-hoc network on a geographic map in a software program stored on the mobile repeater telephone processor or on a database that is accessible by the mobile repeater telephone and the software program, wherein the ad-hoc network comprises a plurality of telephones at least one of which is a mobile repeater telephone for establishing a first telephone connection line between a first caller telephone and a first receiver telephone in the ad-hoc network, wherein at least one mobile repeater telephone has at least one transmitter, at least one receiver, a processor, a PS receiver (positioning system receiver), and at least one repeater for repeating a signal received or transmitted by the at least one mobile repeater telephone for establishing the at least one telephone connection line, wherein the at least one transmitter, the at least one receiver and the at least one repeater simultaneously allow establishing at least one second telephone connection line between at least a second caller telephone and at least one second receiver telephone different from the first caller telephone and the first receiver telephone, respectively, with at least a subset of all the mobile repeater telephones in the ad-hoc network having its own unique code and at least a subset of all the unique codes of the mobile repeater telephones in the ad-hoc network are known to at least the subset of all mobile repeater telephones in the ad-hoc network, and further wherein the software program: includes the geographic map in electronic form of the area of the ad-hoc network, and includes the data about the topography on the geographic map, and has all the obstacles positioned on the geographic map and how much the obstacles attenuate the signal, and wherein the mobile repeater telephone connects to another mobile repeater telephone and in that way maintains the conversation if at least one mobile repeater telephone shows that a break will probably occur in 15 minutes, in 10 minutes, in 5 minutes, in 2 minutes, in 1 minute, or in 30 seconds.