CN1452350A - Access device with switchable wireless network standards - Google Patents
Access device with switchable wireless network standards Download PDFInfo
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- CN1452350A CN1452350A CN 02105557 CN02105557A CN1452350A CN 1452350 A CN1452350 A CN 1452350A CN 02105557 CN02105557 CN 02105557 CN 02105557 A CN02105557 A CN 02105557A CN 1452350 A CN1452350 A CN 1452350A
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- access device
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- transport module
- wireless network
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Abstract
An access device with switchable wireless network standards for configuring a wireless network with a system backbone and several dynamic terminals having the first and the second transmission standards is composed of CPU, an Ethernet adapter for connecting said system backbone, a slot for selectively plugging the first or the second wireless transmission module in it to provide the first or the second transmission standard, and an antenna module controlled by antenna switch.
Description
Technical field
The present invention relates to a kind of access device that is used for radio area network, especially a kind of access device that is used for radio area network can switch between different transmission standards easily.
Background technology
Radio area network (Wireless Local Area Network; Wireless LAN) and Internet network (Internet) suitable development has been arranged in recent years, and be widely used in now in office, retail shop and the large scale industry facility, such as warehouse or factory.In view of the progress of digital radio transmission technology, and the not convenient property of cable installation, by Radio Transmission Technology construction Local Area Network LAN, or the demand of so-called radio area network LAN thereby increase significantly.These radio area networks provide the transmission of data between computer, printer, server and other devices, and no longer need trouble and the cable of costliness and the installation steps of splicing ear.
Basically wireless Local Area Network LAN is converted on the carrier wave for general Local Area Network LAN agreement.The IEEE802.11 of radio area network LAN is the extension of Local Area Network LAN Ethernet, and modular agreement is the IEEE802.3 Ethernet.In fact, had three IEEE802.11 standards at present and comprised Frequency Hopping Spread Spectrum/FHSS (Frequency Hopping SpreadSpectrum; FHSS), direct sequence exhibition frequency (DSSS:Direct Sequence SpreadSpectrum) and infrared technology.
For radio area network LAN, existing typical technology is IEEE802.11, and it is by Institute of Electrical and Electronics Engineers (Institute of Electrical and Electronics Engineers; IEEE) standard of being worked out.This standardized technology is in open systems architecture pattern (OpenSystem Interconnection model; OSI model) under, provide the sublayer that connects by physical layer to data, or medium key-course (Media Access Control in succession; MAC) definition.The specification that it comprises can replace Ethernet (Ethernet) or wired Local Area Network LAN transmission channel, and the function of roaming also is provided, be one with wireless relevant additional functionality.
If Local Area Network LAN supports wireless dynamic terminal (mobile terminal),, portable radio data communication product small-sized such as the notebook computer with IEEE802.11x function or other, this Local Area Network LAN will also need to be connected to one or more access device (accesspoint; Also be called base station (base station)).Each access device links to this Local Area Network LAN and has at least one radio communication, and itself and this dynamic terminal forms wireless telecommunications.
The radio area network lan product that uses ieee standard is usually based on the specification of IEEE802.11 and IEEE802.11b.IEEE802.11b is former 802.11 extension, and has higher speed, and frequency range operates in 2.4GHz, is rated for 5.5 to 11Mbps transmission rate information.Next generation of this standard, that is IEEE802.11a also are called Hiper LAN2, will operate in 5GHz with a new frequency range, and reach the higher transmission rate information of 54Mbps.With respect to the exhibition frequency technology of the blue bud (Bluetooth), IEEE802.11 and the IEEE802.11b that use, it uses orthogonal frequency division to use (Orthogonal Frequency DivisionMultiplexing more; OFDM).This IEEE802.11a system still can with general Ethernet coupling, and without any need for switch selecting device.The standard of this kind IEEE802.11x is configured as personal computer memory card PC card (PC card or be called pcmcia card) usually.
Yet different IEEE802.11x transmission standards is used for the wireless dynamic terminal such as notebook computer at large at present.Existing access device is usually in order to provide single fixing IEEE802.11x transmission standard.If need the different transmission standard of change, then need the access device that more renews, cause the increase that cost is set of Radio Network System.
Therefore, just having to provide a kind of access device, can adapt to different wireless transmission standards, switches between different transmission standards easily, conveniently to set up the radio area network of different transmission standards.
Summary of the invention
Main purpose of the present invention provides a kind of access device, can switch between different transmission standards easily, with the convenient radio area network with different transmission standards of setting up.
For reaching above-mentioned purpose, the invention provides a kind of access device (Access Point) with switchable wireless network standards its in order to construction one wireless network, this wireless network has system's trunk and a plurality of dynamic terminal (mobile terminal), this dynamic terminal has first and second transmission standard respectively, can be electrically connected to one first and one second wireless transport module (wireless transmission module) respectively for no reason at all.This storage device comprises a central processing unit, an Ethernet port, a slot and an antenna modules.Control and the operation of this central processing unit in order to carry out data in this wireless network.This Ethernet port (Ethernet Port) is connected to this system's trunk, so that this central processing unit can receive or send packet (data packet) via this system's trunk.This slot is connected with this central processing unit, in order to optionally will with this first or this second wireless transport module (wireless transmission module) insert wherein, in order to this first or second transmission standard to be provided respectively, with the dynamic terminal with this first or second transmission standard wirelessly electrically in succession.This antenna modules is controlled by a duplexer, with respond this first or this second wireless transport module, and between different frequency ranges, switch, wirelessly to be electrically connected with this dynamic terminal.
As previously mentioned, the miniature peripheral parts interconnected PCI slot that is had according to this access device of the present invention (Access Point), availablely plug together work, and have the double frequency Wide antenna, be used to different frequency range runnings for wireless transport module with different transmission standards.Therefore, access device of the present invention can switch between the radio area network LAN system of the different transmission standards that different frequency ranges operate easily, so make this access device of the present invention can be adapted to the dynamic terminal of different transmission standards, change different transmission standards apace.
Description of drawings
Fig. 1 is the system block diagrams according to one of preferred embodiment of the present invention access device (Access Point).The figure number explanation
10 access devices, 12 central processing units
14 random access memories, 16 read-only memories
18 power supplys, 20 Ethernet ports
22 slots, 24 duplexers
26 antenna modules
28 peripheral component interconnect (pci) buses
Embodiment
Describe the specific embodiment of the present invention in detail below in conjunction with drawings and Examples.
Though the present invention can show as multi-form embodiment, but shown in the accompanying drawing and in the preferred embodiment of the present invention that is illustrated as hereinafter, and please understand person disclosed herein and consider and be example of the present invention, and be not that intention is in order to be limited to the present invention in diagram and/or the described specific embodiment.
Now please refer to Fig. 1, it shows the system block diagrams according to an access device (Access Point) 10 of preferred embodiment of the present invention.This access device 10 comprises that a power supply 18 is in order to supply with this access device 10 required power supplys, and central processing unit 12 and a read-only memory (ROM) 16 and a random access memory (RAM) 14 actings in conjunction, to carry out various control and operating function hereinafter described.
This access device 10 has a peripheral parts interconnected (Peripheral ComponentInterconnect in addition; PCI) bus 28 (hereinafter to be referred as pci bus 28).This center processor 12 is connected with an Ethernet end (Ethernet Port) 20 by this pci bus 28.This Ethernet port 20 is connected to system's trunk of a Radio Network System, as Local Area Network (LAN) etc., and makes this central processing unit 12 receive or to send packet (data packet) via system's trunk of this Radio Network System thus.
This pci bus 28 is connected with a slot 22 in addition.These slot 22 usefulness plug together for a wireless transport module (wireless transmission module), it has the standard of IEEE802.11x, such as IEEE802.11, IEEE802.11a or IEEE802.11b, in order to this Radio Network System in have this transmission standard a dynamic terminal (mobile terminal) connect mutually.As previously mentioned, because IEEE802.11a operates in different frequency ranges with IEEE802.11b, be respectively 5GHz and 2.4GHz, so the antenna modules 26 that is connected with the wireless transport module that inserts this slot 22 will become a switchable double frequency Wide antenna, with frequency running respectively at 5GHz and 2.4GHz.Again, this Anneta module 26 can so be made this this antenna 26 can switch to the needed running frequency range of this wireless transport module, and wirelessly be connected to this dynamic terminal with this wireless transport module acting in conjunction by a duplexer 24 controls.
Clearer and more definite, when a wireless transport module with IEEE802.11a standard inserts this slot 22, this duplexer 24 can be responded to the frequency range running of responding this module and automatically this antenna 26 being switched to 5GHz automatically.Similarly, when a wireless transport module with IEEE802.11b standard inserts this slot 22, this antenna 26 will switch to the frequency range running of 2.4GHz.
Moreover, when the slot 22 of access device 10 of the present invention is miniature peripheral parts interconnected PCI (Mini Peripheral Component Interconnect; Mini PCI) during slot, not only has smaller volume, and, more can provide transmission rate information fast with after this wireless transport module is connected.Yet being skillful in present technique person can understand, and this miniature peripheral parts interconnected PCI slot is replaceable to be the slot of any pattern, such as ISA slot, pcmcia card, and peripheral parts interconnected PCI slot.
As previously mentioned, access device of the present invention (Access Point) provides the wireless transport module of various criterion to peg graft by the slot setting, and then can be by the induction of duplexer, and make the antenna that connects wireless transport module will become a switchable double frequency Wide antenna, be used to different frequency range runnings.Therefore, the radio area network LAN system that this access device provided can switch between different transmission standards under difference running frequency range easily.
Though aforesaid description and diagram have disclosed preferred embodiment of the present invention, must recognize various increase, revise and replace may be used in preferred embodiment of the present invention, and can not break away from the spirit and the scope of the principle of the invention that defines as claims.Be familiar with this operator and can know from experience the modification that the present invention may be used in a lot of forms, structure, layout, ratio, material, element and assembly.Therefore, this paper, should be regarded as in order to explanation the present invention in all viewpoints in embodiment that this disclosed, but not in order to restriction the present invention.Protection scope of the present invention should be defined by claims, and contains its legal equivalents, is not limited to previous description.
Claims (5)
1. the access device (Access Point) with switchable wireless network standards is used for a wireless network, it is characterized in that, this wireless network has system's trunk and a plurality of dynamic terminal (mobile terminal), this dynamic terminal has first and second transmission standard respectively, can wirelessly be electrically connected to one first wireless transport module (wireless transmissionmodule) and one second transport module respectively, this access device comprises:
One central processing unit is in order to control and the operation of carrying out data in this wireless network;
One Ethernet port (Ethernet Port) is connected to this system's trunk, so that this central processing unit can receive or send packet (data packet) via this system's trunk;
One slot, optionally be connected with this central processing unit, use for this first or this second wireless transport module (wireless transmission module) plug together, in order to this first or second transmission standard to be provided respectively, wirelessly electrically connect with dynamic terminal with this first or second transmission standard; And
One antenna modules is controlled by a duplexer, with respond this first or this second wireless transport module, and between different frequency ranges, switch, wirelessly to be electrically connected with this dynamic terminal.
2. access device according to claim 1 is characterized in that, also comprises a peripheral parts interconnected pci bus in addition, in order to this central processing unit is connected to this Ethernet port and this wireless transport module.
3. access device according to claim 1 is characterized in that, this slot is miniature peripheral parts interconnected PCI (Mini Peripheral Component Interconnect; Mini PCI) slot is in order to connect this wireless transport module.
4. access device according to claim 1 is characterized in that the transmission standard that this wireless transport module provided is the standard of IEEE 802.11x.
5. access device according to claim 1 is characterized in that, this switchable double frequency Wide antenna can switch running between the frequency range of 5GHz and 2.4GHz.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02105557 CN1452350A (en) | 2002-04-16 | 2002-04-16 | Access device with switchable wireless network standards |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02105557 CN1452350A (en) | 2002-04-16 | 2002-04-16 | Access device with switchable wireless network standards |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1452350A true CN1452350A (en) | 2003-10-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02105557 Pending CN1452350A (en) | 2002-04-16 | 2002-04-16 | Access device with switchable wireless network standards |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1452350A (en) |
-
2002
- 2002-04-16 CN CN 02105557 patent/CN1452350A/en active Pending
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