Title: Mobile IP Address Efficiency
Authors: Zhen Zhen, Srinivas Sampalli
Abstract: In future wireless networks, mobility management is an important aspect to maintain continuous user communications. Having a public address for each user terminal is desirable but can be expensive in terms of addresses, especially with Mobile IPv4 which uses the already limited IPv4 address space. Even if Mobile IPv6 is deployed, the initial inter-operation with IPv4 hosts still costs a large number of IPv4 addresses. In this paper, we propose a new address sharing approach, which enables the network to use one single public address to serve a large number of users. Also, it avoids the shortcomings of NAT-like techniques that they do not allow calls initiated from the outside of the network and are not transparent to other protocols, such as IPSec. This approach can also be used as a general IPv6/IPv4 transition technique.