System and method for roaming in data -and communication- networks

• US 20050174974A1
• Filed: 08/18/2004
• Published: 08/11/2005
• Est. Priority Date: 08/19/2003
• Status: Abandoned Application

• Current Assignee: Artur H. Sonntag, Djamshid Tavangarian, Magnus H. Bergs
• Original Assignee: Artur H. Sonntag, Djamshid Tavangarian, Magnus H. Bergs
• Inventors: Tavangarian, Djamshid, Bergs, Magnus H., Sonntag, Artur H.
• Application Number:
  US10/920,645
• Publication Number:
  US 20050174974A1
• Time in Patent Office: Days
• US Class Current: 370/338
• CPC Class Codes: B61L 15/0027 Radio-based, e.g. using GSM-R
• CPC Class Codes: B61L 27/70 Details of trackside communication
• CPC Class Codes: H04W 40/00 Communication routing or communication path finding
• CPC Class Codes: H04W 84/00 Network topologies
• CPC Class Codes: H04W 88/08 Access point devices
• CPC Class Codes: H04W 92/20 between access points

Abstract

The present invention is directed to a system and a method for roaming in data and/or communication networks, and to a corresponding computer program and a corresponding computer-readable storage medium, which can be used, in particular, to enable users in rapidly moving vehicles to use the Internet. A system for roaming in data and/or communication networks is proposed for clients moving at a high speed, wherein access points (AP) are arranged along the travel route of the clients for providing wireless access to data and/or communication networks, for example the Internet, wherein at least one AP is connected directly via a communication link with the data and/or communication network, and wherein APs without a direct connection to the data and/or communication network are connected to APs that have a direct connection to the data and/or communication network.

Claims

1. System for roaming in access regions of data and/or communication networks for use with a client moving at a high-speed,

characterized in that

access points (AP) are arranged along the travel route of the client for providing wireless access to data and/or communication networks, for example the Internet, wherein at least one AP is directly connected with the data and/or communication network by a communication link, and

wherein APs without a direct connection to the data and/or communication network are connected by communication links to the APs that have a direct connection to the data and/or communication network.

2. System according to claim 1,

characterized in that

the travel route of the client is covered in its entirety by the illumination areas of the APs (continuous architecture).

3. System according to claim 1,

characterized in that

the travel route of the client is covered partially by the illumination areas of the APs (semi-continuous architecture).

4. System according to claim 1,

characterized in that

the system comprises a computer system for automatically transmitting the data within the data and/or communication network, and that the network-internal computer system for automatically transmitting of the data is configured so that the network-internal computer system for automatically transmitting the data assigns the client an identification, for example an IP address, when the client switches from the area of one AP to the area of another AP (roaming).

5. System according to claim 1,

characterized in that

the data and/or communication network comprises an autonomous, self-administered network, for example a Local Area Network (LAN).

6. System according to claim 1,

characterized in that

the autonomous self-administered network includes one or several transition points to other data and/or communication networks, for example to the Internet.

7. System according to claim 1,

characterized in that

at least one module of the network-internal computer system for automatically transmitting the data is installed on a central server, and at least one module of the computerized system for automatically transmitting the data is installed on at least a portion of the APs, wherein

the module(s) installed on the central server are configured so as to be able to authenticate and administer the client'"'"'s identification, and

the module(s) installed on the APs are configured so as to be able to perform the association of the transition points.

10. System according to claim 1,

characterized in that

the system is configured so as to be usable for Voice-over-IP (VoIP).

8. (canceled)

9. (canceled)

11. (canceled)

12. Method for roaming in access regions of data and/or communication networks for use with clients moving at a high speed, wherein the data and/or communication network includes access points (AP) for wireless access of data processing devices and/or communication terminals (clients) as well as a computer system for automatically routing the data within the data and/or communication network,

characterized in that

the computer system transmits information about clients to those APs that are located in the travel direction of the client(s).

13. Method according to claim 12,

characterized in that

when the client switches from the area of one AP to the area of another AP (roaming), the network-internal computer system for automatically transmitting the data assigns to the client an identification, for example an IP address.

14. Method according to claim 12,

characterized in that

when the client enters a region of an access point, in particular during roaming, the client is logged on at this access point.

15. Method according to claim 12,

characterized in that

connections that exist on the client remain in existence during roaming and/or the client is always assigned the same identification during roaming.

16. Method according to claim 12,

characterized in that

one of the IEEE 802.11 technologies, for example the IEEE 802.11a, the IEEE 802.11b, or the IEEE 802.11g technology, is used as a technology for wireless transmission of the data.

17. Method according to claim 12,

characterized in that

one of the IEEE 802.16 technologies, for example the IEEE 802.16a, the IEEE 802.16d, or the IEEE 802.16e technology, is used as a technology for wireless transmission of the data.

18. Method according to claim 12,

characterized in that

the method supports use of Voice-over-IP (VoIP).

19. Computer program, which enables a computer, after the computer program is loaded into the memory of the computer, to execute a method for roaming in access regions of data and/or communication networks for use with a client moving at a high speed, wherein the data and/or communication network includes access points (AP) for wireless access of data processing devices and/or communication terminals (clients) as well as a computer system for automatically routing the data within the data and/or communication network, and the method includes the following step:

transmitting information about the clients to APs located in the travel direction of the client(s).

20. Computer program according to claim 19,

characterized in that

the computer program includes several modules, and at least a first module is installed at a central server, and at least a respective second module is installed at the APs.

22. Computer-readable storage medium according to claim 19,

characterized in that

the computer-readable storage medium comprises

first modules suitable for installation at a central server and/or

second modules suitable for installation at the APs.

21. Computer-readable storage medium, which stores a program that enables a computer, after the program is loaded into the memory of the computer, to execute a method for roaming in access regions of data and/or communication networks for use with a client moving at a high speed, wherein the data and/or communication network includes access points (AP) for wireless access of data processing devices and/or communication terminals (clients) as well as a computer system for automatically routing the data within the data and/or communication network, and the method includes the following step:

transmitting information about the clients to APs located in the travel direction of the client(s).

23. Method, wherein a computer program according to one of the following methods:

a) one of the IEEE 802.16 technologies, for example the IEEE 802.16a, the IEEE 802.16d, or the IEEE 802.16e technology, is used as a technology for wireless transmission of the data;

or

b) the method supports use of Voice-over-IP (VoIP) is downloaded from an electronic data network, for example, the Internet, to a data processing device connected to the data network.