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Assisted power-up and hand-off system and method

a technology of hand-off and power-up, which is applied in the direction of wireless network protocols, digital transmission, data switching networks, etc., can solve the problems of various limitations of the ipv4 standard and associated procedures, the implicit design assumption of internet protocols is violated, and the centralized interface system is vulnerable to missile attacks and sabotage, etc., to speed up the mobile ip system, reduce the amount of registration control, and increase the efficiency of transmission

Active Publication Date: 2010-12-21
TELEFON AB LM ERICSSON (PUBL)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0030]The present invention offers new methodologies or protocols for establishing a communication link with a mobile node at power-up and maintaining that link with hand-off procedures on or between networks. The invention uses care-of addressing located in an expanded address field in request and response messages. The invention also, at times, uses Dynamic Host Configuration Protocol (DHCP) servers and AAA computer servers to facilitate power-up registration and hand-off procedures involving a mobile node. Using the DHCP server streamlines the procedure, reducing packet transmission overhead and improving the efficiency of the system.
[0037]The present invention uses an expanded address format over IPv4, and is intended to reduce the amount of registration control, management messages (e.g. Request and Response messages), and information messages (e.g. Binding Update and Binding Acknowledgement). This invention will increase efficiency of transmission and speed up the mobile IP systems because it reduces the amount of overhead message transmission and routing.

Problems solved by technology

While the Defense Department officials wanted a system that would permit communication between these different computer networks, they realized that a centralized interface system would be vulnerable to missile attack and sabotage.
Because of this highly mobile Internet usage, the implicit design assumption of the Internet protocols has been violated.
With the advent of mobile IP and proliferation of computers and computer systems linked to the Internet, various limitations in the IPv4 standard and associated procedures have developed and emerged.
The most pressing limitation in IPv4 is the restriction on number of IP addresses.
Current protocols for obtaining a care-of address and procedures for power-up registration and hand-off procedures are insufficient to handle current packet-based communication demands.
These constraints are insufficient for supporting a standard that needs a larger address space and the associated network design architecture.

Method used

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  • Assisted power-up and hand-off system and method
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  • Assisted power-up and hand-off system and method

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Embodiment Construction

[0053]FIG. 1 shows a Mobile Node (MN) 64 powering up on a foreign sub-network 50 of a home network 100. The home network 100 has a central buss line 54 coupled to a home AAA server (HAAA) 20 by communication link 55, a DHCPv6 server 30 coupled by communication link 56 to the buss line 54, a home mobility manager (HMM) 40 coupled by communication link 17 to the buss line 54, and a serving mobility manager (SMM) 10 coupled by communication link 15 to the buss line 54. The home sub-network 51 of the MN 64 consists of the HMM 40 coupled to the home agent 25 by communication link 19. The foreign sub-network 50 consists of the SMM 10. MN 64 is linked to SMM 10 by a communication link 62, which may be a wired or wireless connection.

[0054]In FIG. 1, the MN 64 is powering up on a foreign sub-network 50. FIG. 2 shows the registration message flow for the situation where the MN 64 powers up on a foreign sub-network within the home network. This embodiment is referred to as an Intra-Domain Powe...

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Abstract

The invention provides for an improved method and system of registration and hand-off procedures for a mobile node in a packet-based communication network. The present invention obtains expanded addresses over past systems. The invention can also use serving mobility managers to obtain a care-of address to route data-packets while on the foreign sub-network. The invention improves efficiency and reduces message overhead during registration and hand-off.

Description

RELATED APPLICATION DATA[0001]This application is the utility patent application related to provisional application Ser. No. 60 / 238,899 filed Oct. 10, 2000.TECHNICAL FIELD OF THE INVENTION[0002]A power-up and hand-off communication protocol in a packet-based communication system.BACKGROUND OF THE INVENTION[0003]Present-day Internet communications represent the synthesis of technical developments begun in the 1960s. During that time period, the Defense Department developed a communication system to support communications between different United States military computer networks, and later a similar system was used to support communications between research computer networks at United States universities.The Internet[0004]The Internet, like so many other high tech developments, grew from research originally performed by the United States Department of Defense. In the 1960s, Defense Department officials wanted to connect different types of military computer networks. These different c...

Claims

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Application Information

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Patent Type & Authority Patents(United States)
IPC IPC(8): H04L12/28
CPCH04W8/26H04W36/00H04W60/00H04W80/04H04L69/161H04L61/5007
Inventor KHALIL, MOHAMEDAKHTAR, HASEEBPILLAI, KRISHNAKUMARQADDOURA, EMAD A.
Owner TELEFON AB LM ERICSSON (PUBL)
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