email id: rajashekar407@gmail.com contact no: 9347497415

1. BLUETOOTH AND MOBILE IP Created by rajashekar ( puli ) 9347497415 Adam’s engg college Paloncha Khammam dist

6. Bluetooth Components A complete Bluetooth system will require these elements: An RF portion for receiving and transmitting data A module with a baseband microprocessor Memory An interface to the host device (such as a mobile phone)

7. Bluetooth Goals 􀁺 Open Specification 􀁺 Voice and Data Capability 􀁺 Worldwide Usability 􀁺 Short-Range Wireless Solutions

8. Specification v1.1 Profiles 􀁺 Generic Access Profile 􀁺 Service Discovery Application Profile 􀁺 Serial Port Profile – Virtual COM port – Dial-up Networking Profile – FAX Profile – LAN Access Profile – Headset Profile

9. MOBILE IP: Inorder for the mobile host to receive messages at its new location, it must obtain an IP address in the new network, and messages sent to the original IP address need to be forwarded to the new IP address. Mobile IP has two addresses for a mobile host: One home address and one care-of address. The home address is permanent. The care-of address changes as the mobile host moves from one network to another.

10. The IP addresses are designed to work with stationary hosts because part of the address defines the network to which the host is attached. Home address and care-of address:

11. In the mobile-IP protocol this support is provided by two servers, namely, the foreign agent and the home agent .

12. Home agent and foreign agent: Home Agent When the mobile host and the foreign agent are the same, the care-of address is called a co-located care-of address.

13. Remote host and mobile host communication: Mobile IP does not use a new packet type for agent advertisement, it uses the router advertisement packet of ICMP, and appends an agent advertisement message.

14. Agent advertisement: Mobile IP does not use a new packet type for agent solicitation, it uses the router solicitation packet of ICMP.

15. Registration request and reply:

16. Registration reply format: A registration request or reply is sent by UDP using the well-known port 434.

17. Data transfer: The movement of the mobile host is transparent to the rest of the Internet.

18. INEFFICIENCY IN MOBILE IP: Communication involving mobile IP can be inefficient. A severe case is called double crossing or 2X. A moderate case is called triangle routing or dog-leg routing. Double crossing:

19. Triangle routing:

20. When the Mobile IP protocol is deployed, subnets which are supporting a large number of mobile hosts will need to have multiple mobility agents in order to provide an adequate level of service. In this paper we presented a means of evenly distributing the load among multiple home agents in the Mobile IP protocol. By providing a mechanism which allows incoming packet streams to be transferred from one home agent to another, we may achieve gains over schemes in which each packet stream is only served by a single home agent