MOBILITY SUPPORT

Abdullah Alghamdi

GENERIC HANDOVER PERFORMANCE REQUIREMENTS

Handover rates

Fast reservations:

Minimize RTT during QoS establishment Handover requests treated with higher

priority Minimize number of bits transmitted over

“slow” links

GENERAL ISSUES WITH MOBILITY SUPPORT

Inter-subsystem handover forces mobile node (MN) to change assigned IP address

Use an additional ID to identify NTLP transport state that does not include MN’s IP address and keeps association with flow ID(s) before and after handover

REQUIREMENTS FOR MOBILITY IN INTERNET

Mobility Transparency Easy to use Routing Security

WHAT IS IPV4?

IPv4 stands for Internet Protocol version 4. It is the underlying technology that makes it possible for us to connect our devices to the web

Without IP addresses, computers would not be able to communicate and send data to each other. It’s essential to the infrastructure of the web.

WHY ARE WE RUNNING OUT OF IPV4 ADDRESSES?

IPv4 uses 32 bits for its Internet addresses.

How does IPv6 solve this problem?

MOBILE IPV6

Mobile IPv6 is intended to enable IPv6 nodes to move from one IP subnet to another

While a mobile node is away from home

BASIC IPV6 ADDRESS TYPES

unicastmulticastanycast

IPV6 – ADDRESSING MODEL

Address are assigned to interfaces

Interface expected to have multiple addresses

Addresses have scope

Address have lifetime

TERMS USED IN MOBILE IPV6

Mobile Node Home Address Care-of Address Binding Home Agent Binding Cache

MAJOR DIFFERENCES BETWEEN MIPV4 AND MIPV6

No FA in Mobile IPv6

Packets delivery

QUALITY OF SERVICE

IPv6 header has two QoS-related fields 20-bit Flow Label

8-bit Traffic Class Indicator

New IPv6 option – QoS Object

CONCLUSIONS

Mobile IPv6 is An able and connect protocol for handling

mobility with IPv6 Lightweight protocol To minimize the control traffic needed to effect

mobility