WO2005084043A2 - Reseaux radiotelephoniques - Google Patents

Reseaux radiotelephoniques Download PDF

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Publication number
WO2005084043A2
WO2005084043A2 PCT/GB2005/000766 GB2005000766W WO2005084043A2 WO 2005084043 A2 WO2005084043 A2 WO 2005084043A2 GB 2005000766 W GB2005000766 W GB 2005000766W WO 2005084043 A2 WO2005084043 A2 WO 2005084043A2
Authority
WO
WIPO (PCT)
Prior art keywords
access point
bridges
wireless
housing
switch
Prior art date
Application number
PCT/GB2005/000766
Other languages
English (en)
Other versions
WO2005084043A3 (fr
Inventor
Stephen John Webber
Original Assignee
Exenet Limited
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 Exenet Limited filed Critical Exenet Limited
Priority to EP05717844A priority Critical patent/EP1728397A2/fr
Publication of WO2005084043A2 publication Critical patent/WO2005084043A2/fr
Publication of WO2005084043A3 publication Critical patent/WO2005084043A3/fr

Links

Classifications

    • 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
    • H04W88/14—Backbone network devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/10—Small scale networks; Flat hierarchical networks
    • H04W84/12—WLAN [Wireless Local Area Networks]

Definitions

  • This invention relates to a wireless network device and networks comprising multiple such devices.
  • Wireless network technology based on the standard IEEE 802. llx is now used to set up wireless LANs and long distance wireless links with high data rates that can support multi-user access to the ernet.
  • a LAN wireless access point has a coverage area sufficient to support connection of multiple users within its locality, provided each user has a PC or other device with a suitable wireless network adapter.
  • the access point itself may be connected to an Ethernet backbone or a high speed broadband Internet connection. An access point therefore provides a wireless-to-wired network connection.
  • a wireless bridge allows a line of sight wireless link to be set up with a similar device located up to several miles away, each wireless bridge typically being linked into a local Ethernet network.
  • An object of the present invention is to facilitate the creation of a wireless network comprising multiple nodes, which might function as bridges (point-to-point or point-to-multipoint) and/or access points for wireless LAN access.
  • a wireless network device comprises first and second wireless bridges and a wireless LAN access point, each with a respective input/output connection for an antenna to receive and transmit signals over a wireless link, a switch that interconnects the bridges and the access point to route data either between the two bridges or between the access point and the two bridges, and a housing which houses the two bridges, the access point, and the switch.
  • a wireless network device has the ability to be configured so that it functions solely as a bridge, routing data via the switch between the two bridges.
  • the device can be configured so that it functions both as a bridge and as an access point, simultaneously routing data between the bridges and between the wireless LAN of the access point and either bridge.
  • multiple such devices can form the nodes of a wireless network with the bridges forming either point-to-point or point-to-multipoint wireless links, and the access point being optionally configured to support wireless LAN access at any node.
  • the wireless network device is configured so that the channel frequency of the bridges is different to that of the access point, thereby reducing interference between the bridging and access point functions when they are both present.
  • the wireless network device preferably has one or more of the following features :-
  • Figure 1 is a schematic drawing of a wireless network device according to the invention
  • Figure 2 is a schematic drawing showing how the electrical components of the device of
  • Figure 1 are incorporated in a housing
  • Figure 3 shows how the device of Figures 1 and 2 is adapted to be mounted at the top of a pole
  • Figure 4 shows a network incorporating multiple devices as shown in Figures 1 to 3,
  • Figure 5 shows a circuit diagram for the power circuit of the device of Figure 1
  • Figure 6 shows a back plane suitable for use in the device of Figure 1.
  • the wireless network device 1 illustrated in Figure 1 comprises a number of component devices integrated into a multifunctional unit.
  • the component device comprise two wireless bridges 2, 3, each with a respective input/ output connection 4, 5 for an antenna 6, 7 ( Figure 3) to form a wireless link 8, 9 with a wireless bridge 2', 2" of a similar device 1', 1" located some distance away, typically miles.
  • the bridges 2, 3 conform to the IEEE 802.1 lx standard. Both bridges 2, 3, are mounted on a common printed circuit board 10, as shown in Figure 2.
  • the network device 1 also includes an access point 12 which is also mounted on the printed circuit board 10.
  • the access point 12 has an input/output connection 13 for an antenna 14 which is adapted to give wireless coverage for a wireless LAN in the vicinity of the device 1.
  • the access point 12 conforms to the IEEE 802. llx standard, and multiple users having PC's or devices 15 with suitable wireless network adapters are able to communicate via this wireless LAN.
  • the users may communicate with one another or with the internet or other networks under the control of a router 16.
  • the router 16 is also mounted on the printed circuit board 10.
  • the router has input/output connections 17, 18, 19 on the printed circuit board 10 to each of the bridges 2,3 and the access point 12, and serves to route packets between the input outputs 4, 5 and 13 according to the packet addressing. For example, users may access the internet from the devices 15 via the access point 12 and the wireless links 8 or 9.
  • the resulting integrated device 1 can be configured to provide wireless LAN access via the access point, and/or a dedicated wireless link via the two bridges.
  • the dedicated wireless link may be set up to run at the maximum speed to provide the infrastructure backhaul, and the wireless LAN access may be restricted to a lower bandwidth.
  • the device 1 preferably operates simultaneously on two or more frequencies.
  • the bridging function and LAN access functions operate on channels at opposite ends of the 802. llx spectrum of 2.412 - 2.462Ghz.
  • the network device 1 is implemented using a single back plane 30, as illustrated in Figure 6.
  • the back plane consists of a printed circuit board 31 on which are mounted six socket connections 32 to 37 separated by electromagnetic shields 38 to provide radio isolation between radio devices plugged into the socket connections.
  • a power connection 39 is provided which is connected to each socket connection 32 to 37 to power the respective radio devices.
  • a main connection bus 40 interconnects all of the socket connections 32 to 37.
  • Socket connection 37 is for router 16; socket connections 35 and 36 are for wireless bridges 2 and 3, respectively; and socket connections 32 to 34 are for a maximum of three access points 12, only one of which is shown in Figure 1.
  • radio devices comprising the two bridges 2, 3 and a maximum of three access points 12 are connected to the router 16 via the connection bus 40.
  • a radio antenna connection is provided on the back of the printed circuit board 31 for each socket connection, equivalent to the antenna connections 4, 5 and 13 in Figure 1.
  • the device 1 is enclosed within a two-part housing 20 which is sealed to be weatherproof, and which is adapted to be mounted at the top of a communication mast or pole 21.
  • the antenna 6, 7 and 14 may also be attached to the pole 21. The location of the antenna 6, 7, 14 below the housing helps to eliminate solar shadows.
  • a power supply is provided to power the device 1 and may comprise batteries housed within the housing 20 or located in close proximity to the device 1, for example, in a housing 11 at the base of the mast 21.
  • the batteries may comprise lead acid batteries. Battery power may be supplemented by solar power generated by a solar cell array 22 on the upper surface of the housing 20 for maximum exposure to sunlight.
  • the power circuit showing the batteries 23 and solar cell array 22 is shown in Figure 5.
  • a regulator 24 is connected between the solar cell array and the battery 23, and a voltage convertor 25 is connected between the battery 23 and the device 1.
  • the device 1 is mounted at the top of the pole 21 via a joint 26, which may be angularly adjustable to allow the solar cell array 22 to be orientated at the optimum angle relative to the sun, or which may be fixed at an optimum angle to suit the latitude at which the device is to be deployed.
  • Each device 1 may be deployed to form a wireless network over a wide area, as shown in Figure 4.
  • Each device 1 is located at a network node and is configured according to the functionality required, that is, whether or not it is to incorporate an access point, and is to provide a point- to-point or point-to-multipoint wireless link through each of the bridges 2, 3.
  • seven of the nine network nodes incorporate an access point and point-to-point wireless links, and two of the network nodes M provide point-to-multipoint wireless links only.
  • a device 1 may be wall mounted instead of being mounted at the top of a mast or pole.
  • the installation may be a fixed installation or a mobile installation.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Small-Scale Networks (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Un périphérique réseau sans fil (1) comprend des premier et second ponts sans fil (2, 3) et un point d'accès de réseau local sans fil (12), chacun étant pourvu d'une connexion entrée/sortie (17, 18, 19) pour antenne (6, 7, 14) afin de recevoir et d'émettre des signaux sur une liaison sans fil (8, 9), un commutateur (16) qui raccorde les ponts (2, 3) et le point d'accès (12) pour acheminer des données soit entre les deux ponts (8, 9), soit entre le point d'accès (12) et les deux ponts (8, 9) et un logement (20) qui renferme les deux ponts (8, 9), le point d'accès (12) et le commutateur (16). De préférence, la fréquence de canal des ponts (8, 9) est différente de celle du point d'accès (12), ce qui réduit l'interférence entre les fonctions des ponts et du point d'accès lorsque les deux existent. De préférence, le dispositif présente une ou plusieurs des caractéristiques suivantes: alimentation par batteries; alimentation par panneaux solaires; logement étanche à l'eau, ledit dispositif étant adapté pour être monté sur le sommet d'un poteau ou dans un mur.
PCT/GB2005/000766 2004-02-27 2005-02-28 Reseaux radiotelephoniques WO2005084043A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP05717844A EP1728397A2 (fr) 2004-02-27 2005-02-28 Reseaux radiotelephoniques

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0404333.7 2004-02-27
GB0404333A GB2411545B (en) 2004-02-27 2004-02-27 Wireless networks

Publications (2)

Publication Number Publication Date
WO2005084043A2 true WO2005084043A2 (fr) 2005-09-09
WO2005084043A3 WO2005084043A3 (fr) 2005-12-01

Family

ID=32050945

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2005/000766 WO2005084043A2 (fr) 2004-02-27 2005-02-28 Reseaux radiotelephoniques

Country Status (3)

Country Link
EP (1) EP1728397A2 (fr)
GB (1) GB2411545B (fr)
WO (1) WO2005084043A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007146918A2 (fr) * 2006-06-12 2007-12-21 R & R Business Services Division, Inc. Dispositif de communication sans fil

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030206531A1 (en) 2002-05-06 2003-11-06 Extricom Ltd. CDMA messaging between wireless LAN access points
US20040014494A1 (en) 2002-07-16 2004-01-22 Paul Hellhake Double wireless access point bridging system

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6400702B1 (en) * 1991-10-01 2002-06-04 Intermec Ip Corp. Radio frequency local area network
US6665718B1 (en) * 1997-10-14 2003-12-16 Lucent Technologies Inc. Mobility management system
SE0003440D0 (sv) * 2000-09-26 2000-09-26 Landala Naet Ab Kommunikationssystem
US7161926B2 (en) * 2001-07-03 2007-01-09 Sensoria Corporation Low-latency multi-hop ad hoc wireless network
US6925069B2 (en) * 2002-04-19 2005-08-02 Meshnetworks, Inc. Data network having a wireless local area network with a packet hopping wireless backbone
GB0209927D0 (en) * 2002-04-30 2002-06-05 Hewlett Packard Co Local area network

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030206531A1 (en) 2002-05-06 2003-11-06 Extricom Ltd. CDMA messaging between wireless LAN access points
US20040014494A1 (en) 2002-07-16 2004-01-22 Paul Hellhake Double wireless access point bridging system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007146918A2 (fr) * 2006-06-12 2007-12-21 R & R Business Services Division, Inc. Dispositif de communication sans fil
WO2007146918A3 (fr) * 2006-06-12 2008-06-19 R & R Business Services Divisi Dispositif de communication sans fil

Also Published As

Publication number Publication date
GB2411545B (en) 2007-05-30
EP1728397A2 (fr) 2006-12-06
WO2005084043A3 (fr) 2005-12-01
GB2411545A (en) 2005-08-31
GB0404333D0 (en) 2004-03-31

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