WO2016043575A1 - Procédé de communication par l'intermédiaire de liens virtuels dans un réseau maillé - Google Patents

Procédé de communication par l'intermédiaire de liens virtuels dans un réseau maillé Download PDF

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Publication number
WO2016043575A1
WO2016043575A1 PCT/MY2015/000074 MY2015000074W WO2016043575A1 WO 2016043575 A1 WO2016043575 A1 WO 2016043575A1 MY 2015000074 W MY2015000074 W MY 2015000074W WO 2016043575 A1 WO2016043575 A1 WO 2016043575A1
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WO
WIPO (PCT)
Prior art keywords
node
mesh
virtual
mesh network
nodes
Prior art date
Application number
PCT/MY2015/000074
Other languages
English (en)
Inventor
Ahmad Zaki BIN ABU BAKAR
Nordin BIN RAMLI
Hafizal BIN MOHAMAD @ DIN
Azmi BIN YAACOB
Ng MING ANN
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 WO2016043575A1 publication Critical patent/WO2016043575A1/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 communications system and, more particularly, to wireless communication through a mesh network.
  • Wireless mesh networks are one of the commonly used communication system nowadays.
  • the network connection is spread out among plurality of wireless mesh nodes that communicate to each other to share the network connection across a large area.
  • Mesh networks may be implemented as wired or wireless networks.
  • mesh networks can be used to provide voice, data, and video services to geographic areas that do not yet have a wired telecommunications infrastructure.
  • Wireless mesh networks are used to provide wireless local area networks (WLANs) that conform to the IEEE 802.1 1 such as a virtual local area network (VLAN).
  • WLAN wireless local area networks
  • VLAN has the same attributes as a physical local area network (LAN), and allows one or more user devices to communicate easily regardless of their physical location and even if they are not on the same network switch.
  • the present invention has been made in the view of the above problems, and in one aspect of the present invention there is provided a method of establishing communication through virtual links in a mesh network.
  • the method includes providing a virtual interface at a first node in the mesh network, wherein the first node defining a plurality of access points. Further, the method includes bridging a plurality of virtual links to the virtual interface, wherein the plurality of virtual links enabling the communication between one or more user devices and the plurality of access points. Further the method includes grouping dynamically the plurality of virtual links at the first node into a single virtual link and using the single virtual link to forward the communication to a second node in the mesh network.
  • a mesh network enabling communication between one or more user devices.
  • the mesh network includes a first plurality of nodes, wherein each of the first plurality of nodes comprising a first radio, at least one processor, and a memory storing computer-executable instructions to select a route for the communication, wherein each of the first plurality of nodes configured to communicate with the one or more user devices and one or more other nodes in the mesh network, wherein each of the first plurality of nodes communicate with the one or more user devices through a plurality of virtual links and a second plurality of nodes, wherein each of the second plurality of nodes comprising a second radio, at least one processor, and a memory storing computer-executable instructions to select a route for the communication, wherein each of the second plurality of nodes configured to communicate with at least the first plurality of nodes, through a single virtual link established by the first radio and the second radio. 015 000074
  • FIG. 1 illustrates a mesh network 100 describing communication between one or more user devices.
  • FIG 2 illustrates the handling of the virtual links at a first node of the mesh network 100 in accordance with an embodiment of the present invention.
  • FIG. 3 illustrates a mesh interface of a first node of the mesh network 100.
  • FIG. 4 illustrates a trunk virtual channel interface of a first node of the mesh network 100.
  • FIG. 5 illustrates a flow chart describing establishment of VLAN through a mesh network in accordance with an embodiment of the present invention.
  • FIG. 6 illustrates a flow chart describing handling of virtual links in accordance with an embodiment of the present invention.
  • the present disclosure describes a method of communication using virtual links in a mesh network.
  • the present disclosure describes a method of implementing virtual local area network (VLAN) in a mesh network, wherein the implementation includes managing virtual links at a node of the mesh network and forwarding the virtual links to the other node of the mesh network as a single virtual link.
  • the access point Service Set Identifier (SSID)s are bridged to a particular virtual interface from a plurality of virtual interfaces at a first node of the mesh network. Thereafter, the plurality of virtual interfaces enabling the grouping of the plurality of virtual links to generate a single virtual link.
  • the single virtual link is utilized to establish communication between the first node and a second node of the mesh network.
  • the first node is a Mesh Access point (MAP) and the second node is a Mesh point (MP). In another embodiment, the first node is a Mesh Access point (MAP) and the second node is also a Mesh Access point (MAP).
  • MAP Mesh Access point
  • MP Mesh point
  • VLAN is implemented through a mesh network by incorporating packet tagging, wherein the nodes receives packets tagged to a particular VLAN and route the packets further based on the information obtained from packet tagging. Therefore, a node of the mesh network handles multiple virtual links tagged with different VLAN established to cater needs for a particular services or a network. Therefore, to handle increasing demand of services, nodes in mesh network require more hardware infrastructure and processing capabilities to handle such services or applications.
  • the present invention facilitates handling of virtual links in a wireless mesh network by grouping them for specific services or applications, thereby eliminating the need of additional hardware infrastructure. Further, the present invention facilitates dynamic addition or deletion of virtual links, thereby improving scalability, security, and network management.
  • FIG. 1 illustrates a mesh network 100 describing communication between one or more user devices.
  • the mesh network 100 includes a first plurality of nodes 106a and 106b and 106c (hereinafter the first node is indicated as 106 for the purpose of mere illustration), a second plurality of nodes 104a and 104b (hereinafter the second node is indicated as 104 for the purpose of mere illustration).
  • the mesh network 100 includes at least one gateway node 102 which may communicate with the second nodes 104a and 104b and the first nodes 106a and 106b and the like.
  • the gateway node 102 may communicate with a wired network outside the mesh network 100.
  • nodes of the mesh network 100 may be configured to communicate with one another.
  • the first nodes 106a, 106b and 106c in the mesh network 100 typically act as an access point to provide wireless communications from end-user devices D to the mesh network 100 as well as communication with at least one other node in the mesh network 100.
  • the end-user devices D may be enabled to communicate with an external network, which may be, for example, the Internet or another wired or wireless network through the gateway node 102.
  • external network may be an extension of a business's local area network (LAN) and share security and other attributes of that network facility.
  • the plurality of first nodes 106a, 106b and 106c may be a Mesh Access Point (MAP) and the plurality of second nodes 104a and 104b may be a Mesh Point (MP).
  • MAP Mesh Access Point
  • MP Mesh Point
  • Each of the end user-devices D communicating with the first node 106 such as the MAP is identified by a service set identifier (SSID), wherein the SSID differentiates one VLAN from another. Therefore, the end-user devices connected to the specific VLAN may use the same SSID.
  • SSID Service Set Identifier
  • each of the Service Set Identifier (SSID) is already mapped to its virtual links at the backhaul with dedicated virtual local area network (VLAN) mesh identifier (ID).
  • VLAN virtual local area network
  • ID virtual local area network
  • Each end-user device D registered to a certain group of virtual local area network may be associated with the first node 106 via a service set identifier (SSID), such as SSID 1 , SSID2 and SSID3.
  • SSID service set identifier
  • the first node 106 such as the mesh access point (MAP) receives the virtual link from SSID3
  • the received virtual link is forwarded to the second node, such as the mesh point (MP) with a mesh ID.
  • SSID 1 may be mapped to mesh ID 1
  • SSID2 may be mapped to mesh DD2, and the like.
  • FIG 2 illustrates the handling of the virtual links at a first node of the mesh network 100 in accordance with an embodiment of the present invention.
  • a first node 202 provides an access point 206 to the end-user devices D connected through virtual links.
  • the first node 202 provides interfaces 208a, 208d and 208e as a mesh point providing mesh services.
  • the interfaces 208 208a, 208d, 208e hereinafter referred as mesh virtual interfaces.
  • the second node includes a mesh interface 208b and 208c, wherein the interface 208b receives the multiple virtual links comprising a mesh ID associated therewith.
  • the mesh interfaces 208b and 208c hereinafter referred as mesh virtual interfaces.
  • the first node further includes a trunk virtual channel interface 302.
  • the trunk virtual channel interface 302 includes the mesh virtual interfaces 208a, 208d and 208e, wherein each of the mesh virtual interfaces receive virtual links from the access point 206.
  • the access point receives the virtual links enabling communication between multiple end-user devices D identified and interfaced via SSIDs, such as SSID0 ....SSID7.
  • Each of the mesh virtual interfaces may be bridged to several virtual links as illustrated in FIG. 2.
  • the trunk virtual channel interface 302 may be configured to group the virtual links to generate a single virtual link.
  • the generated single virtual link may be forwarded to the second node 204 by the first node 202 using one mesh ID, such as mesh ID0.
  • the classification of end-user devices may be achieved by forwarding the request frame from the end-user device to the RADIUS server, which is located remotely.
  • Remote Authentication Dial In User Service (RADIUS) server is an authentication server, such as CiscoSecure ACS that run the networking protocol which provides a centralized Authentication, Authorization, and Accounting (AAA) management for end-user devices to connect and use a network service.
  • AAA Authentication, Authorization, and Accounting
  • the first node 202 enables dynamic configuration of the virtual links by addition or drop of virtual channels based on a request from end-user devices D further supported by authentication from the radius server. It is well known to a person skilled in the art that in dynamic VLAN creation, firstly the end-user devices D may be associated to the Service Set Identifier (SSID) and a request may be forwarded to a RADIUS server for creating the virtual links.
  • SSID Service Set Identifier
  • RADIUS Remote Authentication Dial In User Service
  • the RADIUS includes a table of VLAN groups with its registered medium access control (MAC) address of end-user devices D.
  • MAC medium access control
  • FIG. 3 illustrates a mesh interface of a first node of the mesh network 100.
  • a first node 402 includes mesh virtual interfaces, such as 404a, 404b, 404c and 404d. Each of the mesh virtual interfaces may be bridged to a virtual link enabling communication to a particular end-user device associated with a particular SSID.
  • FIG. 4 illustrates a trunk virtual channel interface of a first node of the mesh network 100.
  • a first node 502 includes a trunk virtual channel interface 504.
  • the trunk virtual channel interface 504 may be configured to group mesh virtual interfaces to generate a single virtual link.
  • the single virtual link is further forwarded by the first node 502 to a second node for further forwarding in the mesh network 100.
  • a first node and a second node of the mesh network 100 includes radios or beacons. More specifically, the first node includes a first radio and the second node includes a second radio.
  • Radios incorporated in the nodes may be coupled to a processor which may be coupled to volatile memory and a non-volatile memory. Radios may operate simultaneously to support connections to two or more nodes and/or end-user devices D.
  • the software running on processor may be, for example, a Linux operating system and include additional software layers, which may vary for different implementations, all the way up to the application level.
  • Radios generally may be able to operate in several different frequency spectrums.
  • Radio in a first node may communicate with end-user devices on one of the 2.4 GHz (WiFi "b/g band") channels.
  • radio of each the first node may include, for example, an auto-select feature to select different channels for communications with end-user devices.
  • This auto-select feature may be provided, for example, by the medium access control (MAC) layer in the IEEE 802.1 1 standard.
  • MAC medium access control
  • Other algorithms may be used to select the channel for communication with end-user devices.
  • an algorithm may use the distance of the node from the nearest gateway device that has a wired connection to the Internet as a selection parameter, with each radio of the first node using a different channel based on the nodes ordered distance from the Internet.
  • all nodes in the mesh network may use the same or substantially the same hardware.
  • the different operational roles of nodes such as Mesh Access Point, Mesh Point or a gateway node are typically software controlled and programmable. Further, the software may be updated as wireless communication standards change and evolve.
  • non-volatile memory used by the processor of the first and second nodes may be used to store instructions that may be processed by the processor.
  • Volatile memory may be used to store, for example, a routing table used by nodes during communications and interaction with the mesh network 100.
  • Radios typically are controlled by processor. However, in some embodiments, software may be stored on one or more of radios and/or radios may be configured to perform some operations independently of the processor.
  • the end-user devices D referred in this present disclosure may be, for example, a personal computer, a telephone, a personal digital assistant (PDA) or other end-user device that is enabled for wireless communications, and may enable, for example, data or voice communications over mesh network 100. Examples of such communications include data and Voice over Internet Protocol (VoIP) communications.
  • Wireless standards that may be used for implementing wireless communications within the mesh network 100 include, for example, the various 802.1 1 standards published by the IEEE such as, for example, the 802.1 l b standard, and all such standards are incorporated herein by reference.
  • FIG. 5 illustrates a flow chart describing establishment of VLAN through a mesh network in accordance with an embodiment of the present invention.
  • a VLAN is created using different device classes in a mesh network, such as a mesh access point (MAP), mesh point (MP) and gateway node.
  • MAP mesh access point
  • MP mesh point
  • gateway node In order to establish communication through a mesh network, at step 604 mesh links are created between the nodes of the mesh network. These mesh links may be referred to as virtual links when these mesh links are utilized to carry VLAN data or packets.
  • virtual links are created between MAP and MP through one to one beacon configuration.
  • end-user devices communicate wirelessly with MAP and may be identified by a unique SSID.
  • MAP bridge each SSID to a designated mesh virtual interface.
  • end-user devices send tagged packets or frames to MAP.
  • the MAP receives the packets though access points provided by the MAP and forwards the packets or frames further to gateway node via MP.
  • gateway node receives the packets or frames and forwards the packets or frames to their destination depending on tagged information thereon.
  • FIG. 6 illustrates a flow chart describing handling of virtual links in accordance with an embodiment of the present invention.
  • the flowchart 700 is described in conjugation with FIG. 5.
  • all SSIDs may be bridged to mesh virtual interfaces provided by MAP.
  • the mesh virtual interfaces are grouped to form a single virtual link.
  • the MAP provides a trunk virtual channel interface which acts as a VLAN concentrator and creates a single virtual link by concentrating the virtual links corresponding to all bridged SSIDs from end-user devices and virtual links received from other nodes.
  • single virtual link is forwarded to mesh point (MP) by the MAP.
  • MP mesh point
  • MP receives the forwarded single virtual link and at step 710, the MP check whether there may be any further reception of forwarded link from any other nodes. In an instance, when there is no reception of the forwarded link, the control passes to the step 706. In an instance, when there is reception of the forwarded link, the control passes to step 7 12.
  • the MP authenticates the validity of virtual links based on the authentication performed by an authentication server, such as the RADIUS server. The authentication process is well known in the art and therefore not mentioned in detailed herein.
  • the MP dynamically adjusts the virtual links based on the authentication from the RADIUS server, wherein dynamically adjust includes deletion and addition of virtual links.

Abstract

La présente invention concerne un procédé d'établissement de communication par l'intermédiaire de liens virtuels dans un réseau maillé. Le procédé comprend la fourniture d'une interface virtuelle au niveau d'un premier nœud dans le réseau maillé, le premier nœud définissant une pluralité de points d'accès. En outre, le procédé comprend le pontage d'une pluralité de liens virtuels avec l'interface virtuelle, la pluralité de liens virtuels permettant la communication entre un ou plusieurs dispositifs utilisateur et la pluralité de points d'accès. De plus, le procédé comprend le regroupement dynamique de la pluralité de liens virtuels au niveau du premier nœud dans un unique lien virtuel et l'utilisation de l'unique lien virtuel pour transmettre la communication à un second nœud dans le réseau maillé.
PCT/MY2015/000074 2014-09-17 2015-09-04 Procédé de communication par l'intermédiaire de liens virtuels dans un réseau maillé WO2016043575A1 (fr)

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MYPI2014702627A MY177144A (en) 2014-09-17 2014-09-17 Method of communication through virtual links in a mesh network
MYPI2014702627 2014-09-17

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WO2016043575A1 true WO2016043575A1 (fr) 2016-03-24

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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003096623A1 (fr) * 2002-05-08 2003-11-20 Siemens Aktiengesellschaft Reseau local dans lequel les clients sans fil peuvent se deplacer librement

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003096623A1 (fr) * 2002-05-08 2003-11-20 Siemens Aktiengesellschaft Reseau local dans lequel les clients sans fil peuvent se deplacer librement

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