Universal mobile addressing in the Internet

To support mobility, we propose to use a triple (M, N, d) as an address for every stationary or mobile computer in a multi-network system, like the Internet. In this (M, N, d) address, M is the network where the computer is currently located, N is the network where the computer is usually located, and d is a unique identifier of the computer in network N. The address of a stationary computer is always (NI N, d), while the address of a mobile computer is (M, N, d), where M may be different from N. In this paper, we discuss how to use this universal addressing in a number of protocols for routing data messages to mobile computers, for establishing and maintaining mobile virtual circuits, and for supporting mobile groups