Mobility management method for delivering calls in a microcellular network

A method of informing a mobile telephone located in an off-load cellular telephone system adjacent to a main cellular telephone system that there is a telephone call for the mobile telephone, comprising the steps of:

• registering the mobile telephone with the off-load cellular telephone system upon the mobile telephone entering the off-load cellular telephone system;
• registering the mobile telephone with a standard communications interface system, after registering the mobile telephone with the off-load cellular telephone system, as a function of predetermined criteria, in order to inform the main cellular telephone system that the mobile telephone is located in the off-load cellular telephone system;
• determining whether the mobile telephone is registered with the main cellular system as being located in the off-load cellular telephone system;
• if the mobile telephone is not registered with the main cellular telephone system as being located in the off-load cellular telephone system, then;
• broadcasting a page signal in the main cellular telephone system when the telephone call for the mobile telephone is received by the main cellular telephone system, and
• rebroadcasting the page signal originally broadcast in the main cellular telephone system into the off-load cellular telephone system, thereby informing the mobile telephone of the telephone call;
• if the mobile telephone is registered with the main cellular telephone located as being in the off-load cellular telephone system, then;
• informing the mobile telephone of the telephone call through a standard communications interface system.

A method of delivering a telephone call to a mobile telephone located in an off-load cellular telephone system adjacent to a main cellular telephone system, comprising the steps of:

• determining whether the mobile telephone is registered with the main cellular system as being located in the off-load cellular telephone system;
• if the mobile telephone is not registered with the main cellular system as being located in the off-load cellular telephone system, then;
• broadcasting a page signal in the main cellular telephone system when the telephone call for the mobile telephone is received by the main cellular telephone system,
• rebroadcasting the page signal originally broadcast in the main cellular telephone system into the off-load cellular telephone system,
• receiving a response signal from the mobile telephone acknowledging that the mobile telephone has received the page signal,
• directing the mobile telephone to retune to a frequency of the main cellular telephone system, and
• delivering the telephone call to the mobile telephone through the main cellular telephone system;
• if the mobile telephone is registered as being in the off-load cellular telephone system, then;
• delivering the telephone call to the mobile telephone through a standard intersystem communications interface system.