Group Members

Supervised by: Md.Masud Ibn Afjal Lecturer, Department of CEN, H.S.T.U

Serial no

Name Id Batch

1 Mehnaj Binte Zia 1002052 11th

2 Habiba Yeasmin 1102073 11th

Presentation Topic: Reduce Handoff

Latency of MIPv6.

Mobile IP (or MIP) is an Internet Engineering Task Force (IETF) standard communications protocol that is designed to allow mobile device users to move from one network to another while maintaining a permanent IP address.

What is MIP?

IPv4 is the fourth revision of the Internet Protocol (IP) used to identify devices on a network through an addressing system.

What is MIPv4?

Mobile IPv6 (MIPv6) is a protocol developed as a subset of Internet Protocol version 6 (IPv6) to support mobile connections.

What Is MIPv6?

Mobile IPv6 enables a mobile node to maintain its connectivity to the Internet when moving from one Access Router to another, a process referred to as handoff. Handoff involves link switching, which may not be exactly coordinated with fast handover signaling.

Handoff delay of MIPv6

We can minimize the handoff delay by:

Reducing packet loss Extended Correspondent

Registration Scheme Host-based localized mobility

management scheme cooperating with Layer 2 and Layer 3 handovers

Using extended Handover Control Function (E-HCF).

How can we minimize the handoff delay?

By establishing a buffer on the CN side to retain the forwarded packets, the buffered packets will be retransmitted to the mobile nodes once the binding updates have been received by the corresponding node. This procedure reduced the packet loss.

Minimizing packet loss using Two-Tier Buffer

Fig: Two-Tier Buffer

Fast Handoff protocol not only buffers packets in the New Access Router (NAR), they use buffer in the Previous Access Router (PAR) as well during the handover process.

Using three types of services in the handoff process so that packets can be treated differently based on their traffic characteristics.

Two way buffer procedure

Use of the first Tier: While MN is moving to a new location.

Use of the second Tier: When the MN attached to a new location and sending binding updates (BU) to the correspondent node.

Two-Tier Buffer

To reduce packet loss considering authentication PL-PMIPv6 is a useful procedure where PL-PMIPv6 is Packet Lossless Proxy Mobile IPv6.

Reduce packet loss considering

Authentication

Fig: Proxy Mobile IPv6

A previous MAG (pMAG) registers to a Local Mobility Anchor (LMA) on behalf of a new MAG (nMAG) during layer 2 handoff.

nMAG buffers packets during handover after registration.

It use Authentication, Authorization and Accounting (AAA) infrastructure.

PL-PMIPv6

The PBU message of nMAG is included in DeReg PBU message.

The tunnel between the LMA and the nMAG is established in advance.

After the pMAG is aware of the MN’s detachment, it sends the DeReg PBU message to the LMA in PMIPv6.

The nMAG can receive the MN’s profile securely using AAA infrastructure.

PL-PMIPv6 working procedure

Fig: PL-PMIPv6 procedure

Time: Two-Tier buffer is less time consuming than PL-PMIPv6.

Design: Two-Tier buffer is more simple to design.

Cost analysis: As Two-Tier buffer is simple to design so it needs low cost to construct.

Reliability: Two-Tier buffer is reliable than PL-PMIPv6.

Comparison between Two Tier Buffer & PL-

PMIPv6

For reducing handoff delay we analyze only reducing packet loss factors among many other factors. We find Two-Tier Buffer is a useful way to reduce packet loss as well as reduce the handoff latency of MIPv6.

Conclusion And Future Work

Question?