WO2005060175A2 - Systeme et procede de transmission de donnees dans des reseaux de communication et/ou de donnees, a niveaux organises de façon hierarchique, programme informatique correspondant et support d'enregistrement correspondant lisible par un ordinateur - Google Patents

Systeme et procede de transmission de donnees dans des reseaux de communication et/ou de donnees, a niveaux organises de façon hierarchique, programme informatique correspondant et support d'enregistrement correspondant lisible par un ordinateur Download PDF

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Publication number
WO2005060175A2
WO2005060175A2 PCT/EP2004/014758 EP2004014758W WO2005060175A2 WO 2005060175 A2 WO2005060175 A2 WO 2005060175A2 EP 2004014758 W EP2004014758 W EP 2004014758W WO 2005060175 A2 WO2005060175 A2 WO 2005060175A2
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WO
WIPO (PCT)
Prior art keywords
data
network
levels
communication networks
level
Prior art date
Application number
PCT/EP2004/014758
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German (de)
English (en)
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WO2005060175A3 (fr
Inventor
Magnus H. Bergs
Original Assignee
Bergs Magnus H
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bergs Magnus H filed Critical Bergs Magnus H
Publication of WO2005060175A2 publication Critical patent/WO2005060175A2/fr
Publication of WO2005060175A3 publication Critical patent/WO2005060175A3/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W40/00—Communication routing or communication path finding
    • H04W40/02—Communication route or path selection, e.g. power-based or shortest path routing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W80/00—Wireless network protocols or protocol adaptations to wireless operation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/18—Service support devices; Network management devices

Definitions

  • the present invention relates to a system and a method for data transmission in data and / or communication networks with hierarchically organized levels, as well as a corresponding computer program and a corresponding computer-readable storage medium, which can be used in particular for the area-wide wireless networking of large areas with a data and / or or communication network such as the Internet to enable Internet use for both stationary and mobile users.
  • Wired 802.11a / b / g access point WLAN 802.11a / b / g access point
  • ISP Internet Service Provider
  • wired networks are hierarchical h can be set up in order to obtain a structured structure of a computer network.
  • network backbones are set up with the aid of various wired network technologies.
  • DVB Digital Video Broadcast
  • DAB Digital Audio Broadcast
  • a disadvantage of the existing systems is the low bandwidth when transmitting to moving end systems (clients). Another disadvantage arises especially when using WLAN (IEEE 802.11). Since the access points have a short range ( ⁇ 500 m), coverage can only be achieved with a high number of access points (see “Cisco”). In addition, the existing systems are designed for either stationary or mobile clients.
  • An additional disadvantage Hotspots are different operators and therefore usually different tariff and billing systems.For operating a hotspot there is also a broadband connection, such as DSL (Digital Subscriber Line), for connection to data and / or communication networks, such as the Internet, but these are not available in all areas.
  • DSL Digital Subscriber Line
  • the object of the invention is to provide a system and a method for data transmission in data and / or communication networks with hierarchically organized levels, as well as a corresponding computer program and a corresponding computer-readable storage medium, which avoid the mentioned disadvantages of the known solutions and in particular an inexpensive solution with regard to installation and maintenance.
  • a system for data transmission in data and / or communication networks with hierarchically organized levels provides that all network levels with the exception of the lowest consist of wireless meshed data and / or communication networks, wireless data and / or communication networks from hierarchically above the the lowest levels set up the connection between wireless data and / or communication networks from hierarchically lower levels and at least some of the network routers used in the system as routers in at least one other network level or in other data and / or communication networks such as the Internet is usable. Such routers are also referred to below as border routers.
  • a network consists of wireless meshed data and / or communication networks if the network comprises wired transmission links, but the wireless transmission links of the network alone form a meshed data and / or communication network.
  • At least some of the network routers used in the system can be used as a downlink to levels below them, in particular directly to the bottom level.
  • Another preferred embodiment of the invention provides that network routers of the highest network level are used as the border router.
  • a particular advantage of the invention is that in a preferred exemplary embodiment, the self-healing and self-optimizing network structure is provided through the use of so-called wireless meshed networks.
  • the meshing of the individual access points of the wireless network backbone increases the reliability and scalability of the available bandwidth.
  • the invention enables the bandwidth for different hierarchy levels to be adapted to the requirements thereof, by using different connection technologies at each hierarchy level.
  • a preferred embodiment of the invention provides that the communication of the elements in the levels arranged above the lowest level by point-to-point connections (unicast architecture) and / or that on the lowest level the connection to individual clients via point to multipoint connection or via point-to-point connection.
  • a method for data transmission in data and / or communication networks with hierarchically organized levels is characterized in that the data transmission takes place by means of data and / or communication networks which are set up in such a way that all network levels except the lowest of wireless meshed data and / or or communication networks exist, wireless data and / or communication networks from hierarchically above the lowest levels realize the connection between wireless data and / or communication networks from hierarchically below levels and at least a part of the Magnus H. Bergs December 20, 2004
  • Network router used in the system can be used as a router in at least one other network level or in other data and / or communication networks such as the Internet.
  • This method uses a multi-layer structure in a hierarchical relationship. All levels except the lowest consist of so-called wireless meshed networks. At any point in the system there may be a connection to other data and / or communication networks, such as the Internet, but primarily only at the top level. Each element (router) of a level can act as a downlink of an underlying level. Direct connections to the lowest level are also possible.
  • a cryptographic device is used for access to the network, which cryptographic device uniquely determines the identity of the user by means of one of the authentication, authorization and accounting servers (AAA servers) present in the network.
  • AAA servers authentication, authorization and accounting servers
  • Embodiment of the method according to the invention provides that in each level, with the exception of the lowest level, at least some of the network routers are used as a downlink to levels below that in the hierarchy, in particular directly to the lowest level.
  • connections for so-called gateways to other systems are also made available for special services.
  • PSTN Public Switched Telephone Network
  • PLMN Public Land Mobile Network
  • a computer program for data transmission in data and / or communication networks with hierarchically organized levels enables a computer, after it has been loaded into the memory of the computer, to carry out a method according to one of claims 9 to 17.
  • the computer program advantageously comprises a plurality of modules, at least one first module being installed in the client, at least one second module in each of the access points, at least one third module in each of the border routers and at least one fourth module in each of the AAA servers
  • these computer programs (for a fee or free of charge, freely accessible or password-protected) can be made available for download in a data or communication network.
  • the computer programs thus provided can then be used by a method in which a computer program according to claim 18 or 19 is downloaded from an electronic data network, such as from the Internet, to a data processing device connected to the data network.
  • a computer-readable storage medium is advantageously used, on which a program is stored which enables a computer after it has been loaded into the memory of the computer Perform method according to any one of claims 9 to 17.
  • the computer-readable storage medium has first modules suitable for installation in a mobile client and / or second modules suitable for installation in the access points and / or third modules suitable for installation in the border routers and / or fourth includes modules suitable for installation in the AAA servers.
  • the wireless transmission offers cost advantages in terms of installation and maintenance.
  • in contrast to wired backbone cabling no expensive and time-consuming installation work is necessary. This makes this method particularly suitable in urban but also in rural areas.
  • the simple and economical reconfiguration of the backbone is made possible by the wireless connection.
  • a transmission of computer-readable data to clients is ensured by the invention, it being irrelevant whether the client is not moving, quickly or very quickly. Sufficient bandwidth for data transmission is also ensured.
  • a uniform authentication and billing method is provided.
  • the invention also solves the so-called last mile problem and thus enables easy Internet access for large numbers of users.
  • Another advantage arises from the use of different wireless technologies with different frequency ranges, so that the signals of the different hierarchy levels do not interfere.
  • DVB-T / H Digital Audio Broadcast Terrestrial
  • DAB-T Digital Video Broadcast Terrestrial
  • an increase in the reliability and scalability of the available bandwidth is achieved by meshing the individual access points of the wireless network backbone with one another.
  • Figure 1 wireless point-to-multipoint connection (non-directional)
  • Figure 2 wireless point-to-point connection (directional)
  • Figure 3 hierarchical wireless network
  • Figure 4 layer model, which is the basis of the hierarchical wireless network.
  • Figure 5 Illustration of the basic hierarchical structure of the system according to the invention; Magnus H. Bergs 12/20/2004
  • Figure 6 Illustration of the structure of the system according to the invention in an exemplary scenario
  • Figure 7 Illustration of the basic structure of the system according to the invention in interaction with DAB / DVB to provide interactive services
  • Figure 8 Illustration of the basic structure of the system according to the invention in interaction with DAB / DVB to provide local news services
  • a client system is a technical product which is integrated into the network via an Internet protocol suitable for communication with the access point and which is technically capable of exchanging data with the access point via this Internet protocol.
  • An access point is a technical product installed by the operator of the network, which enables the connection of client systems via the Internet protocol.
  • the access point has one or more connections in the network (backbone).
  • a transition point establishes the transition from a locally administered network to another data network, for example the Internet.
  • the transition point can be an access point which is expanded with a corresponding network connection.
  • a network backbone is a structure that is formed by connecting access points with the help of a network structure.
  • An exemplary implementation of the invention can consist of a wireless, hierarchically structured backbone.
  • a hierarchical structuring for wireless communication systems is provided for this (see FIG. 4).
  • the bottom layer hereinafter referred to as the user layer NS or local web WB, is responsible for the communication between the users and the wireless network.
  • the second layer now called zone layer ZS or regional web RW, enables communication within a zone.
  • the third layer the Interzonen Horn IZS or the National-Web NW, establishes the communication between the zones.
  • the user layer NS (or local web LW) is realized with an undirected wireless network technology.
  • the users are connected to the higher layers via so-called access points ZP.
  • Several users who are in direct communication with an access point can have simultaneous access to the network.
  • the connection can e.g. can be implemented using the IEEE 802.11b or 802.11g transmission method.
  • zone layer ZS or Regional Web RW
  • access points are connected to zones via directional wireless connections (point-to-point connections).
  • This can e.g. B. by the IEEE transmission method Magnus H. Bergs 12/20/2004
  • 802.11a There are several connections per access point to other access points, creating a highly meshed structure.
  • zones are connected to each other using a broadband, directed wireless or wired network technology. This can e.g. through the wireless transmission method according to IEEE 802.16a. These connections of this layer also form a strongly meshed structure.
  • the network backbone is divided into logical units. For example, a summary of various administrative information, such as routing information, is carried out at the boundaries between two zones, so that less information has to be stored in the higher-level zone.
  • an access point can have other properties. Thus, it can simultaneously be a router in the ZS layer or regional web RW and a router in the interzone layer IZS or national web NW. Furthermore, each access point can provide a transition to the Internet. Any client system, even at other access points in the hierarchical computer network, can use this transition point.
  • the system according to the invention is used for the area-wide wireless networking of large areas with a data and / or communication network such as the Internet.
  • FIG. 5 shows the abstract hierarchical structure of the system according to the invention.
  • This preferred exemplary embodiment consists of three levels, the National-Web NW, the Regional-Web RW and the Local-Web LW level. They differ in the technology used for transmission and thus also in the transmission range, bandwidth and transmission method. The transmission range and / or the bandwidth should be greater in the individual layers than in the layers below.
  • Each computer on one level can function as a so-called border router BR and thus establish a connection 1, 2, 3 or 4 to the levels above and / or below or to an Internet service provider ISP. It is also possible that one or more levels are skipped, as can be seen in connection 3.
  • the radio technology IEEE 802.16a in point-to-point mode is used on the NW level.
  • the RW level can be implemented using the IEEE 802.11a / b / g technology, using the point-to-point mode.
  • end users are Magnus H. Bergs 12/20/2004
  • Multipoint mode supplied.
  • the technologies IEEE 802.16a and / or IEEE 802.11a / b / g can be used.
  • FIG. 6 shows an exemplary scenario in which there are several cities and villages which are wirelessly connected to an Internet service provider ISP via a system according to the invention.
  • the density of meshing on the individual levels is mainly determined by the geographical conditions. Meshing in densely populated areas at the RW and LW levels is stronger than in sparsely populated areas. Furthermore, it is possible to skip the RW level in sparsely populated areas 5 and at the same time use a point-to-multipoint system with a larger range in the LW level, for example an IEEE 802.16a in point-to-multipoint mode.
  • FIG. 6 also shows that a network on the RW level can be connected to several points on the NW level (cf. connection 6).
  • FIGS. 7 and 8 show possible additions to the system according to the invention by different types of systems in order to provide value-added services.
  • a use as an interactive medium for a large number of simultaneous users is shown in FIG.
  • Applications for this supplement would be, for example, " 'e-learning and interactive
  • This service is offered by a central entity in this exemplary case, the central authority is also the television., Which is in the present system or is connected via a Border Router BR.
  • the forward channel, ie from the central instance to the users, is established via a broadcast system, which can be ensured, for example, by a DVB-T / H system (DVB for terrestrial reception)
  • a broadcast system which can be ensured, for example, by a DVB-T / H system (DVB for terrestrial reception)
  • the system (LW) according to the invention is used as the return channel. This division is particularly advantageous if relatively large amounts of data, such as video streams, are sent over the forward channel and the return channel is only used for sporadic transmissions.
  • FIG. 8 shows an example of use as local television and / or radio. It is provided that content providers (B) of the system according to the invention send their streaming data to a central entity (eg a transmitter S) which is located in the system according to the invention or is connected via a border router BR. The transmitter then sends this data again as a broadcast via DAB-T or DVB-T / H to all active receivers (E) in its radio cell FZ.
  • a central entity eg a transmitter S
  • the transmitter then sends this data again as a broadcast via DAB-T or DVB-T / H to all active receivers (E) in its radio cell FZ.
  • This use is particularly suitable for the transmission of unforeseen events in which no broadcasting vehicles from the major broadcasters are available.
  • the border routers BR of different levels are implemented in a computer.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

La présente invention concerne un système et un procédé de transmission de données dans des réseaux de communication et/ou de données, à niveaux organisés de façon hiérarchique, ainsi qu'un programme informatique correspondant et un support d'enregistrement correspondant lisible par un ordinateur, qui peuvent être utilisés en particulier dans la mise en réseau générale sans fil de zones étendues avec un réseau de communication et/ou de données, tel que l'Internet, pour permettre l'utilisation de l'Internet par des utilisateurs aussi bien stationnaires que mobiles. Dans un système selon l'invention, tous les niveaux, à l'exception du niveau le plus bas, sont composés de réseaux de communication et/ou de données maillés sans fil ; les réseaux de communication et/ou de données sans fil des niveaux hiérarchiquement supérieurs au niveau le plus bas établissent la connexion entre des réseaux de communication et/ou de données sans fil de niveaux hiérarchiquement inférieurs et au moins une partie des routeurs utilisés dans le système peut être utilisée comme routeur dans au moins un autre niveau de réseaux ou dans d'autres réseaux de communication et/ou de données, par exemple dans l'Internet.
PCT/EP2004/014758 2003-12-18 2004-12-20 Systeme et procede de transmission de donnees dans des reseaux de communication et/ou de donnees, a niveaux organises de façon hierarchique, programme informatique correspondant et support d'enregistrement correspondant lisible par un ordinateur WO2005060175A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10360312.3 2003-12-18
DE10360312 2003-12-18

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WO2005060175A2 true WO2005060175A2 (fr) 2005-06-30
WO2005060175A3 WO2005060175A3 (fr) 2006-02-16

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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001019127A2 (fr) * 1999-09-08 2001-03-15 Qwest Communications International Inc. Voix et donnees acheminees par paquets cellulaires

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001019127A2 (fr) * 1999-09-08 2001-03-15 Qwest Communications International Inc. Voix et donnees acheminees par paquets cellulaires

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
MACKER J P ET AL: "MOBILE AD HOC NETWORKING AND THE IETF" MOBILE COMPUTING AND COMMUNICATIONS REVIEW, ACM, NEW YORK, NY, US, Bd. 2, Nr. 1, Januar 1998 (1998-01), Seiten 9-14, XP000727460 ISSN: 1091-1669 *

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