Abstract
Time critical applications, such as VoIP and video conferencing require Internet connectivity all of the time for better performance. Moreover, in case of vehicular networks, it is very common for mobile devices to move from one network to another. In such scenarios the sudden changes in the network connectivity may cause problems, which affects the data transmission rate. The movement of a mobile node from one network to another is also a challenge for the routers to maintain the routing information as well as to forward the data to the corresponding node. In all of the aforementioned scenarios, the switching between the networks with minimum latency improves the performance, i.e. in terms of mobility and availability of the network. The Mobile IP protocol serves the purpose of seamless handover of mobile devices from one network to another. A mobile node maintains its permanent IP address using the Mobile IP protocol while moving to a foreign network. When a mobile node establishes the connection with the foreign network the data packets transmitted from the home network are redirected to the foreign network. The Mobile IP protocol establishes a tunnel between the home network and the foreign network. The process of tunneling continues until the mobile node moves back to the home network or when the foreign network advertises the new IP address of the mobile node. With the increasing number of wireless devices the mobility is the key challenge. The devices with multiple interfaces such as mobile phone which uses 4G as well as WiFi, the urge for the availability of the Internet is also high. This paper provides a deep discussion about the Mobile IP protocol and its implementation. A network scenario is proposed with the configuration of the Mobile IP. According to the obtained results of the simulations, the Mobile IP protocol increases the availability of the network connection as well as it achieves the larger throughput when compared with the scenario without using the Mobile IP.
Highlights
The main protocol that is most widely used over the Internet is TCP [1]
In order to cope with mobility and the availability of the Internet some of the protocols are proposed at the transport layer, such as the stream control transmission protocol (SCTP)
The availability of the network connection is related with the mobility, as the mobile devices move from one place to other and join the foreign networks
Summary
The main protocol that is most widely used over the Internet is TCP [1]. TCP needs the services of the network layer protocols. In many cases some of the handover management [16] schemes are used to reduce the transmission latency when a device travels from the home network to a foreign network. In order to cope with mobility and the availability of the Internet (or network connection) some of the protocols are proposed at the transport layer, such as the stream control transmission protocol (SCTP). In order to facilitate the mobility, SCTP uses the multihoming technique [3], which provides the ability to a device to remain connected with multiple networks (i.e. home and foreign agents). With Mobile IP it is allowed to devices to use the permanent IP address while moving to a foreign network This protocol maintains the Internet connectivity and improves the transmission rate in the scenarios of voice over IP (VoIP), virtual private networks, video streaming and in wireless sensor networks.
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