WO2016056891A1 - Système et procédé de commutation automatique de réseau dans un réseau de communication distribué lors d'une défaillance totale de connexion réseau - Google Patents

Système et procédé de commutation automatique de réseau dans un réseau de communication distribué lors d'une défaillance totale de connexion réseau Download PDF

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Publication number
WO2016056891A1
WO2016056891A1 PCT/MY2015/050118 MY2015050118W WO2016056891A1 WO 2016056891 A1 WO2016056891 A1 WO 2016056891A1 MY 2015050118 W MY2015050118 W MY 2015050118W WO 2016056891 A1 WO2016056891 A1 WO 2016056891A1
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WO
WIPO (PCT)
Prior art keywords
network
profile
url
dns
host server
Prior art date
Application number
PCT/MY2015/050118
Other languages
English (en)
Inventor
Badrul Zaman ADNAN
Mohd Hafiz BAHARUDIN
Rosli UZAIRI
Original Assignee
Mimos Berhad
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 Mimos Berhad filed Critical Mimos Berhad
Publication of WO2016056891A1 publication Critical patent/WO2016056891A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/64—Hybrid switching systems
    • H04L12/6418—Hybrid transport

Definitions

  • the present invention relates generally to arrangement for network switching or redirection. More particularly, the present invention relates to an improved system and method for automatic network switching in a distributed communication network upon total network connection failure.
  • Distributed communication network is a network where each station is connected to all adjacent stations rather than to a few switching points, as in a centralized network.
  • Distributed communication architecture belongs to this network is one of the approaches used by many telecommunication operators to provide access to network and Internet, especially in spotted or isolated areas such as rural and hilly area with difficult terrain segments.
  • VSAT or very-small- aperture terminal and network cable are typically used as the primary transmission medium for deployment of the distributed communication architecture.
  • the primary transmission medium may or may not have redundancy option depending on the service level agreement (SLA).
  • SLA service level agreement
  • the present invention provides a system for network switching in a distributed communication network.
  • the system comprises a plurality of base stations that comprises a plurality of user devices connected thereto and is configured to communicate with an access service network (ASN) gateway.
  • ASN access service network
  • the system of the present invention can be characterized by a switching platform which is coupled to the ASN gateway.
  • the switching platform comprises a domain name server (DNS) profile switching unit, a connection checking unit, a universal resource locator (URL) switching unit, and a notification unit.
  • DNS domain name server
  • URL universal resource locator
  • the DNS profile switching unit can be configured for determining, on a continuous basis, a DNS profile of a host server that may be associated with a web browsing session by way of pinging the host server using one or more Internet control message protocol (ICMP) ping packets.
  • the connection checking unit can be configured for monitoring, on a continuous basis, connectivity status of the host server.
  • the connection checking unit can also be configured for lodging a predefined notation based on the connectivity status into a connection status log.
  • the URL switching unit comprises a proxy server that can be configured for redirecting, on an immediate basis, the web browsing session from a URL originally assigned thereto to an alternative URL which is selected based on the DNS profile and the connection status log upon a network connection failure with respect to the URL.
  • the notification unit on the other hand, can be configured for generating a notification message to a user which specifies the network connection failure and the URL redirection.
  • the DNS profile may include a private profile and a public profile.
  • the DNS profile switching unit may switch to the private profile if no response or reply with respect to the one or more ICMP ping packets is received.
  • the DNS profile switching unit may switch to the public profile if a reply packet with respect to the one or more ICMP ping packets is received.
  • the connection checking unit may send one or more ICMP ping packets to a host server in order to determine the connectivity status of the host server based on a response or reply thereof.
  • connection checking unit may lodge a notation ⁇ ' into the connection status log to indicate that network connection which is related to the host server is unavailable or interrupted since no response or reply with respect to the one or more ICMP ping packets is received.
  • connection checking unit may lodge a notation into the connection status log to indicate that network connection which is related to the host server is available since a reply packet with respect to the one or more ICMP ping packets is received.
  • the notification message may comprise an on-screen display including a browser page and a popup window.
  • the system may further comprise a database that comprises a plurality of data including the DNS profile of a host server, the connection status log and the notification message stored thereon.
  • the present invention provides a method of network switching in a distributed communication network.
  • the method can be characterized by the steps of transmitting on a continuous basis one or more Internet control message protocol (ICMP) ping packets to a host server associated with a web browsing session; determining, based on a response or reply with respect to the ICMP ping packets, a domain name server (DNS) profile and connectivity status of the host server; lodging, based on the connectivity status, a predefined notation into a connection status log; redirecting on an immediate basis the web browsing session from a universal resource locator (URL) originally assigned thereto to an alternative URL selected based on the DNS profile and the connection status log upon network connection failure with respect to the URL; and generating a notification message to a user specifying the network connection failure and the URL redirection.
  • ICMP Internet control message protocol
  • Figure 1 shows a distributed architecture associated with the distributed communication network according to one embodiment of the present invention
  • Figure 2 is a flowchart depicting the steps of determining a DNS profile of a host server according to one embodiment of the present invention
  • Figure 3 is a flowchart depicting the steps of determining connectivity status of a host server and lodging the predefined notation into a connection status log according to one embodiment of the present invention
  • Figure 4 is a flowchart depicting the steps of redirecting from a URL to an alternative URL when network connection failure occurs according to one embodiment of the present invention.
  • FIG. 5 is a flowchart depicting the steps of generating a notification message according to one embodiment of the present invention. It is noted that the drawings may not be to scale. The drawings are intended to depict only typical aspects of the invention, and therefore should not be considered as limiting the scope of the invention. In the drawings, like numberings represent like elements between the drawings. DETAILED DESCRIPTION OF THE INVENTION
  • the present invention may allow for automatically redirection of the web session from a URL originally assigned thereto to an alternative URL that may be selected from among a list of URLs predefined earlier in a seamless manner so as to maintain continuous network services experienced by the user. It is also an object of the present invention to allow a user to be notified and informed on the network connection failure and the URL redirection performed (if any) on the network as well as on other relevant information.
  • Figure 1 illustrates a distributed communication architecture suitable for the distributed communication network.
  • the distributed communication network can be a type of computer network that may be spread over different networks. This preferably provides a single data communication network, which can be managed jointly or separately by each network.
  • the distributed communication architecture may be a robust standards-based Ethernet solution for all levels of the industrial automation and control environment, managing and handling information from instruments and sensors to control devices which intercommunicate with computer equipment.
  • the distributed communication architecture may comprise a plurality of base stations 100. Each of the base stations 100 can have a plurality of user devices 101 connected thereto. The plurality of base stations 100 is preferably connected to an access service network (ASN) gateway 102 for connection to a firewall and further transmission to an application server and Internet clouds.
  • ASN access service network
  • the distributed communication architecture as described herein essentially allows a user or user devices 101 served within a wireless or wired network to continuously utilize built-in applications or services that are connected to the network (locally).
  • a set of network elements may be adapted in the present invention, the set of which can be connected through the ASN gateway 102.
  • the set of network elements may include a dynamic host configuration protocol (DHCP) server 104, a home agent (HA) 105, and an authentication, authorization and accounting (AAA) unit 106.
  • the DHCP server 104 can be configured to assign an Internet Protocol (IP) address upon receiving a request via a universal resource locator (URL) seeking an access to the network and Internet.
  • IP Internet Protocol
  • the HA 105 may perform tasks to administer roaming facilities for user devices 101 connected or registered to the distributed communication network.
  • the AAA unit 106 comprises one or more modules that may be configured to provide authentication, authorization and accounting services to the distributed communication network.
  • the system of the present invention may further comprise a switching platform 103 coupled to the ASN gateway 102 as one of network elements, supplementing the DHCP server 104, the HA 105 and the AAA unit 106.
  • the switching platform 103 is preferably configured to facilitate network switching and URL redirection in an immediate basis or in an automatic manner when the network connection from the Internet to an end user fails or is interrupted. This can help improve user experience by keeping the end user remains connected to the network and Internet without delay and further ado to find alternative network connection.
  • the switching platform 103 can also be configured to promptly notify the end user on the network connection failure or interruption and on recovery actions taken in response to the failure or interruption.
  • the switching platform 103 may also allow the end user to customize a URL as desired through any input means.
  • the switching platform 103 may comprise a domain name server (DNS) profile switching unit 103a, a connection checking unit 103b, a URL switching unit 103c and a notification unit 103d that are preferably connected to each other.
  • DNS domain name server
  • the DNS profile switching unit 103a is essentially configured for determining a DNS profile of a host server associated with a web browsing session performed by the end user, on a continuous basis. To determine the DNS profile, the DNS profile switching unit 103a can ping the host server by way of transmitting one or more Internet control message protocol (ICMP) ping packets. Upon the transmission of the ICMP ping packets, the DNS profile switching unit 103a may or may not receive response or reply from the host server. Thus, based on the response or reply, the DNS profile of the host server can be determined whether it is a public profile or a private profile local DNS.
  • ICMP Internet control message protocol
  • the steps involved in determining a DNS profile of a host server are illustrated in a flowchart of Figure 2, in accordance with one exemplary embodiment of the present invention.
  • the steps start with the transmission of one or more ICMP ping packets from the DNS profile switching unit 103a to one or more host servers. If no response or reply with respect to the ICMP ping packets transmitted thereof is received, the DNS profile switching unit 103a switches to or elects the DNS profile of that particular host server is a private profile. On the other hand, if a reply packet with respect to the ICMP ping packets transmitted thereof is received, the DNS profile switching unit 103a switches to or elects the DNS profile of that particular host server is a public profile. Thereafter, the steps at the DNS profile switching unit 103a in respect to one host server can be considered as one complete cycle. Subsequently, after a delay of about 5 seconds, a new cycle for other host server may take place and reiterate.
  • the connection checking unit 103b is essentially configured for monitoring connectivity status of a host server and for lodging a predefined notation based on the connectivity status into a connection status log, on a continuous basis.
  • the connection checking unit 103b transmits one or more ICMP ping packets to one or more host servers in order to determine connectivity status of the concerned host server(s) that is subject to response or reply thereto.
  • Figure 3 shows a flowchart depicting the steps involved in determining connectivity status of a host server according to one exemplary embodiment of the present invention.
  • One or more ICMP ping packets are preferably transmitted from the connection checking unit 103b to one or more host servers to start off the steps.
  • the connection checking unit 103b may expect for response or reply or no response or reply at all from a host server.
  • the connection checking unit 103b can lodge a notation ⁇ ' into the connection status log preferably to indicate that network connection related to the host server is unavailable or interrupted since no response or reply with respect to the one or more ICMP ping packets is received.
  • the connection checking unit 103b may lodge a notation into the connection status log preferably to indicate that network connection related to the host server is available since a reply packet with respect to the one or more ICMP ping packets is received. Thereafter, the steps at the connection checking unit 103b in respect to one host server can be considered as one complete cycle.
  • the URL switching unit 103c comprises a proxy server as transparent proxy that can be configured for redirecting the web browsing session from a URL originally assigned thereto to an alternative URL upon a network connection failure or interruption with respect to the original URL, on a continuous basis.
  • the alternative URL is preferably available and ready-to-connect which can be selected from among a list of URLs, the URLs of which are determined based on the DNS profile and the connection status log as mentioned in earlier paragraphs.
  • the URL switching unit 103c may redirect or switch from the original URL assigned thereto to the alternative URL if it is found that no or severe network connection, i.e.
  • connection failure or interruption based on connectivity status in the connection status log, signaling from the host server in order to maintain the end user connected to the network and Internet as well as to provide seamless communication and applications services to the end user within the distributed communication network, whereby the end user can still utilized built-in applications or services that are connected to the network locally.
  • Figure 4 illustrates the steps involved in the URL redirection at the URL switching unit 103c in the form of a flowchart. Accordingly, an end user keys in a URL as desired into the system. Subsequently, the proxy server such as the 'Squid' server refers the URL to the connection status log which outlines many host servers and URLs with respective predefined notations and thus reads therefrom a corresponding notation that indicates its connectivity status. If the notation in the connection status log is , meaning that network connection related to a particular host server is available, the URL switching unit 103c sets "do-nothing" where it allows the end user to proceed with the desired URL.
  • the proxy server such as the 'Squid' server refers the URL to the connection status log which outlines many host servers and URLs with respective predefined notations and thus reads therefrom a corresponding notation that indicates its connectivity status. If the notation in the connection status log is , meaning that network connection related to a particular host server is available, the URL switching unit 103c
  • the URL switching unit 103c on an immediate basis switches or redirects the URL assigned thereto or keyed-in by the end user to an alternative URL which can be selected from the list of URLs in local DNS in order to maintain continuous communication and applications services to the network and Internet as experienced by the user.
  • the notification unit 103d is preferably configured for generating a notification message to the end user specifying the network connection failure or interruption as well as the URL redirection.
  • the notification message may comprise an on-screen display which includes but not limited to a browser page, i.e. intermediate browser page, and a popup window so as to notify and alert the end user on the same.
  • the notification message may also contain information to informing the end user that the network and Internet is successfully restored and to allowing the end user to change the URL as desired.
  • the steps of notifying the end user and generating a notification message at the notification unit 103d are shown via a flowchart in Figure 5.
  • the notification unit 103d starts off with the step of checking whether or not the URL redirection occurs. If the URL redirection has not occurred or triggered, the notification unit 103d takes responsibility of "do-nothing" where no notification message is required to generate to the end user. However, if the URL redirection has occurred or triggered, the notification unit 103d subsequently checks on the DNS profile of the alternative URL whether it is a public profile or a private profile. A notification message concerning the URL redirection is preferably generated if the DNS profile of the alternative URL is a public profile.
  • the system of the present invention further comprises a database comprising a plurality of data including the DNS profile of a host server, the connection status log and the notification message stored thereon.
  • the present invention describes a method of automatic network switching in the distributed communication network. The method preferably comprises the steps of transmitting on a continuous basis one or more Internet control message protocol (ICMP) ping packets to a host server associated with a web browsing session; determining, based on a response or reply with respect to the ICMP ping packets, a domain name server (DNS) profile and connectivity status of the host server; lodging, based on the connectivity status, a predefined notation into a connection status log; redirecting on an immediate basis the web browsing session from a universal resource locator (URL) originally assigned thereto to an alternative URL selected based on the DNS profile and the connection status log upon network connection failure with respect to the URL; and generating a notification message to a user specifying the network connection failure and the URL redirection.
  • ICMP Internet control message protocol
  • the present invention may be implemented on virtually any type of computer regardless of the platform being used.

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

Abstract

La présente invention concerne un système et un procédé améliorés de commutation automatique de réseau dans un réseau de communication distribué lors d'une défaillance totale de connexion réseau. Le système comprend une pluralité de stations de base (100) comprenant une pluralité de dispositifs utilisateurs (101) connectés à ces dernières et qui est configuré de façon à communiquer avec une passerelle (102) de réseau de service d'accès (ASN). Le système comprend en outre une plate-forme de commutation (103) couplée à la passerelle ASN (102) configurée de façon à faciliter une commutation de réseau et une redirection d'URL de manière immédiate lorsque la connexion réseau entre Internet et un utilisateur final est défaillante ou est interrompue et de façon à en notifier rapidement l'utilisateur final. La plate-forme de commutation (103) comprend une unité de commutation de profil (103a) de serveur de noms de domaine (DNS), une unité de vérification de connexion (103b), une unité de commutation (103c) de localisateur uniforme de ressources (URL) et une unité de notification (103d).
PCT/MY2015/050118 2014-10-10 2015-10-09 Système et procédé de commutation automatique de réseau dans un réseau de communication distribué lors d'une défaillance totale de connexion réseau WO2016056891A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
MYPI2014702993A MY168557A (en) 2014-10-10 2014-10-10 System and method for automatic network switching in distributed communication network upon total network connection failure
MYPI2014702993 2014-10-10

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WO2016056891A1 true WO2016056891A1 (fr) 2016-04-14

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050120292A1 (en) * 2003-11-28 2005-06-02 Fuji Xerox Co., Ltd. Device, method, and computer program product for generating information of link structure of documents
WO2005103958A1 (fr) * 2004-04-20 2005-11-03 The Boeing Company Appareil et procede de decouverte et de configuration automatiques d'un mandataire web
WO2009110327A1 (fr) * 2008-03-04 2009-09-11 日本電気株式会社 Système de surveillance de réseau, procédé de surveillance de réseau, et programme de surveillance de réseau
US20140223511A1 (en) * 2013-02-04 2014-08-07 Alaxala Networks Corporation Authentication switch and network system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050120292A1 (en) * 2003-11-28 2005-06-02 Fuji Xerox Co., Ltd. Device, method, and computer program product for generating information of link structure of documents
WO2005103958A1 (fr) * 2004-04-20 2005-11-03 The Boeing Company Appareil et procede de decouverte et de configuration automatiques d'un mandataire web
WO2009110327A1 (fr) * 2008-03-04 2009-09-11 日本電気株式会社 Système de surveillance de réseau, procédé de surveillance de réseau, et programme de surveillance de réseau
US20140223511A1 (en) * 2013-02-04 2014-08-07 Alaxala Networks Corporation Authentication switch and network system

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