CN101827456A - 802.11 technology-based wireless access method and device for remote local area network - Google Patents
802.11 technology-based wireless access method and device for remote local area network Download PDFInfo
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- CN101827456A CN101827456A CN 201010135671 CN201010135671A CN101827456A CN 101827456 A CN101827456 A CN 101827456A CN 201010135671 CN201010135671 CN 201010135671 CN 201010135671 A CN201010135671 A CN 201010135671A CN 101827456 A CN101827456 A CN 101827456A
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Abstract
The invention discloses a 802.11b/g technology-based wireless access method and a 802.11b/g technology-based wireless access device for a remote local area network. The method comprises the following specific steps of: combining a baseband module with a low carrier frequency radio frequency module to form a low carrier frequency transreceiver which is accordant with 802.11b/g modulation/demodulation and a control specification, wherein the baseband module is accordant with 802.11b/g modulation/demodulation and the low carrier frequency radio frequency module is connected with the baseband module; and adopting a design method for automatically modulating the transmitting power of the low carrier frequency transreceiver which is accordant with 802.11b/g modulation/demodulation and the control specification and reserving an USB interface and power supply connection, an RS232 interface, a general input/output (I/O) interface and an Ethernet interface with RJ45 and power supply connection. The method has the characteristics of long transmission distance, high transmission bandwidth and contribution to realizing access of the remote local area network.
Description
Technical field
The present invention relates to a kind of local area network (LAN) access device, relate in particular to a kind of remote local area network radio switch-in method and equipment.
Background technology
Along with the continuous of continuous promotion and application of broadband data communication popularized, people are more and more higher to the requirement of broadband data communication.Need realize broadband data communication more easily, break away from the constraint of wire communication, realize freely inserting of WiMAX.
Wireless broadband communication is owing to the extensive application of 802.11b/g technology and equipment, and relevant technology and equipment is quite ripe.Code requirement according to the 802.11b/g standard.This standard operation from 2.412MHz to 2.484MHz, is divided into into 14 radio frequency channels, channel spacing 5MHz in the 2.4GHz frequency range.This standard is configured to 3 radio frequency channels (radio frequency channel is not overlapping) or 7 (radio frequency channel is overlapping) two kinds of different patterns with the radio frequency channel of system.Adopt the duplex mode of TDD, make this standard have the higher availability of frequency spectrum.Adopt static frequency hopping, the MANET function that provides radio frequency channel to use.If with the access node of a radio frequency channel as a transmission.Each radio frequency channel all can adopt multiple different modulating technology adaptively in system, satisfies the broadband data communication from 1Mb/s to 54Mb/s, and when adopting DQPSK as modulation classification, a radio frequency channel can be transmitted the data of 2Mb/s.The data bandwidth of common 1 or 2 radio frequency channel will cover and satisfy the application of a residential building or a natural village wideband data.But in normal circumstances, because the operating frequency of 2.4GHz is higher in the 802.11b/g standard, the power output of 100mW is less, all is difficult to satisfy the requirement of using at complicated communication environments and remote communication effect.The WiMax broadband wireless communications equipment price of a new generation is high, has hindered the development of broadband wireless communications.To special-purpose broadband wireless communications field, lack corresponding broadband wireless communications equipment especially.Be necessary for user's broadband wireless access, complicated communication environment, the public correspondence and the private communication field of the outer suburbs a kind of equipment of broadband wireless communications cheaply is provided.
Summary of the invention
The objective of the invention is to provide a kind of cheaply based on the remote local area network radio switch-in method of 802.11 technology in order to overcome the deficiencies in the prior art.Another object of the present invention is to provide a kind of cheaply based on the remote local area network radio reception device of 802.11 technology.
A kind of its concrete grammar of remote local area network radio switch-in method based on 802.11 technology of the present invention is: (300MHz is to arbitrary frequency range of 900MHz for the low carrier frequency that select to meet the baseband module of 802.11 modulating/demodulatings and control, is connected with baseband module, below identical) radio-frequency module, make its composition meet low carrier frequency transceiver under 802.11 modulating/demodulatings and the control standard; Employing meets under 802.11 modulating/demodulatings and the control standard hangs down the method for designing of the automatic modulation of carrier frequency transceiver transmit power, and reserves USB interface and power supply connection, RS232 interface, universaling I/O port, the Ethernet interface of band RJ45 and the connection of powering.
Said a kind of remote local area network radio switch-in method based on 802.11 technology, employing be 802.11 modulating/demodulatings and the low carrier frequency transmission solution of control under the standard.
Said a kind of remote local area network radio switch-in method based on 802.11 technology, its low carrier frequency transceiver transmit power method for designing of modulation automatically meet the 802.11b/g modulating/demodulating and control and hang down the carrier frequency transceiver transmit power method for designing of modulation automatically under the standard.
Said a kind of remote local area network radio switch-in method based on 802.11 technology, the low carrier frequency transceiver of its composition meet the design of low carrier frequency transceiver under 802.11 modulating/demodulatings and the control standard.
Adopt the equipment of a kind of remote local area network radio switch-in method based on 802.11 technology of the present invention, it consists of: central apparatus, remote equipment, they form identical, can select to realize corresponding function by being provided with, comprise the baseband module that meets 802.11 modulating/demodulatings and control, the low carrier frequency radio-frequency module that is connected with baseband module.
The equipment of said a kind of remote local area network radio switch-in method based on 802.11 technology, the operating frequency of its low carrier frequency radio-frequency module is arbitrary frequency range of 300MHZ-900MHZ.
The use of a kind of remote local area network radio reception device based on 802.11 technology for convenience of the present invention can be reserved Ethernet interface and the power supply connection of USB interface and power supply connections, RS232 interface, universaling I/O port, band RJ45 on this equipment.
The present invention a kind of based on 802.11 technology the remote local area network radio switch-in method and equipment owing to adopt IP network to link to each other with equipment by lan port, CPU realizes the analyzing and processing of valid data in the network, use 802.11 technology, realization is to 802.11 modulating/demodulatings and the control of radio-frequency module transceive data, radio-frequency module is realized effective transmission of data as the radio-frequency transmission channels of respective bandwidth.
A plurality of local area network (LAN)s among a small circle connect by wired or existing wireless mode among the present invention, be connected with central station by remote equipment again, central station is equivalent to wireless launcher, comprised the network address translation (nat) agreement, support the basic routing function of DHCP service, NAT fire compartment wall, mac address filter or the like, contain wireless access node, wireless bridge etc.Central station also is the wireless exchange board of wireless network, is the core of wireless network.Central station has network simultaneously and connects and the network exchange function, realize that a plurality of local area network (LAN)s among a small circle interconnect at a distance in the local area network (LAN) mode at a distance, remote equipment is the equal of a receiver, be used for the wireless signal of receiving center station emission, the terminal use is to satisfy the wireless signal of user's band frequency by this device translates after IP network is interconnected, be cascaded to central station, interconnect by central station and other local area network (LAN), promptly substitute cascade network cable with remote equipment, central station equipment alternate network mode switcher is realized the remote extension of local area network (LAN).
Adopt that the present invention is a kind of to be based on the remote local area network radio switch-in method of 802.11 technology and the advantage of equipment: owing to utilized 802.11 technology that extensively adopt in the world now to combine the employing low carrier frequency with ripe digital microwave mechanics of communication; With the frequency ratio of 2.4GHz and 5.8GHz, the low carrier frequency range is because operating frequency is lower, and diffracting power is strong, and is not too responsive to climate change, also not have bigger electromagnetic interference, is fit to complicated communication environments and remote radio transmission.So the networking of remote WLAN (wireless local area network) or individual Access Network can be provided, realize the remote broadband wireless transmission of point-to-point or point-to-multipoint and short-range broadband wireless access.The local area network communication scope can be expanded to tens kilometers under the situation of non-relay equipment, characteristics such as have long transmission distance, transmission bandwidth height (1-54Mb/s), frequency configuration is flexible, networking flexibility is easy, convenient remote local area network (LAN) access, shared, the transfer of data of realization large-capacity data of realizing.The real wideband transmit that realizes image, audio frequency, video, data etc.Because do not increase what parts, cost and former wireless router are basic identical, reached the present invention fully cheaply based on the goal of the invention of the remote local area network radio reception device of 802.11 technology.
Description of drawings
Fig. 1: be that the present invention is a kind of based on the remote local area network radio switch-in method of 802.11 technology and the device structure schematic diagram of equipment;
Fig. 2: be that the present invention is a kind of based on the remote local area network radio switch-in method of 802.11 technology and the device network topological sum equipment connection mode schematic diagram of equipment.
Embodiment
The invention will be further described below in conjunction with accompanying drawing:
Embodiment 1: referring to Fig. 1, Fig. 2, a kind of cheaply based on the remote local area network radio switch-in method of 802.11 technology.Its concrete grammar is: select to meet the baseband module of 802.11 modulating/demodulatings and control, the low carrier frequency radio-frequency module that is connected with baseband module, make its composition meet low carrier frequency transceiver under 802.11 modulating/demodulatings and the control standard; Employing meets under 802.11 modulating/demodulatings and the control standard hangs down the method for designing of the automatic modulation of carrier frequency transceiver transmit power, and reserves USB interface and power supply connection, RS232 interface, universaling I/O port, the Ethernet interface of band RJ45 and the connection of powering.Said a kind of remote local area network radio switch-in method based on 802.11 technology, employing be 802.11 modulating/demodulatings and the low carrier frequency transmission solution of control under the standard.Said a kind of remote local area network radio switch-in method based on 802.11 technology, its low carrier frequency transceiver transmit power method for designing of modulation automatically meet 802.11 modulating/demodulatings and control and hang down the carrier frequency transceiver transmit power method for designing of modulation automatically under the standard.Said a kind of remote local area network radio switch-in method based on 802.11 technology, the low carrier frequency transceiver of its composition meet the design of low carrier frequency transceiver under 802.11 modulating/demodulatings and the control standard.Adopt the equipment of a kind of remote local area network radio switch-in method based on 802.11 technology of the present invention, it consists of: central apparatus, remote equipment, they form identical, can select to realize corresponding function by being provided with, comprise the baseband module that meets 802.11 modulating/demodulatings and control, the low carrier frequency radio-frequency module that is connected with baseband module.The use of a kind of remote local area network radio reception device based on 802.11 technology for convenience of the present invention can be reserved Ethernet interface and the power supply connection of USB interface and power supply connections, RS232 interface, universaling I/O port, band RJ45 on this equipment.The radio frequency of its central apparatus of present embodiment is output as 2W, its radio frequency operation frequency is 300MHZ, and receiving sensitivity is-100dBm that the power supply power supply is the Power-over-Ethernet 50V/50W of 802.3at, the USB power supply, 2W, remote equipment radio frequency output 500mW, its radio frequency operation frequency is 300MHZ, receiving sensitivity is-95dBm, the power supply power supply is the Power-over-Ethernet 50V/50W of 802.3at, USB power supply, 2W.
Embodiment 2: referring to Fig. 1, Fig. 2, a kind of cheaply based on the remote local area network radio switch-in method of 802.11 technology.Its concrete grammar is: select to meet the baseband module of 802.11 modulating/demodulatings and control, the low carrier frequency radio-frequency module that is connected with baseband module, make its composition meet low carrier frequency transceiver under 802.11 modulating/demodulatings and the control standard; Employing meets under 802.11 modulating/demodulatings and the control standard hangs down the method for designing of the automatic modulation of carrier frequency transceiver transmit power, and reserves USB interface and power supply connection, RS 232 interfaces, universaling I/O port, the Ethernet interface of band RJ45 and the connection of powering.Said a kind of remote local area network radio switch-in method based on 802.11 technology, employing be 802.11 modulating/demodulatings and the low carrier frequency transmission solution of control under the standard.Said a kind of remote local area network radio switch-in method based on 802.11 technology, its low carrier frequency transceiver transmit power method for designing of modulation automatically meet 802.11 modulating/demodulatings and control and hang down the carrier frequency transceiver transmit power method for designing of modulation automatically under the standard.Said a kind of remote local area network radio switch-in method based on 802.11 technology, the low carrier frequency transceiver of its composition meet the design of low carrier frequency transceiver under 802.11 modulating/demodulatings and the control standard.Adopt the equipment of a kind of remote local area network radio switch-in method based on 802.11 technology of the present invention, it consists of: central apparatus, remote equipment, they form identical, can select to realize corresponding function by being provided with, comprise the baseband module that meets 802.11 modulating/demodulatings and control, the low carrier frequency radio-frequency module that is connected with baseband module.The use of a kind of remote local area network radio reception device based on 802.11 technology for convenience of the present invention can be reserved Ethernet interface and the power supply connection of USB interface and power supply connections, RS232 interface, universaling I/O port, band RJ45 on this equipment.The radio frequency of its central apparatus of present embodiment is output as 5W, its radio frequency operation frequency is 900MHZ, receiving sensitivity is-100dBm, the power supply power supply is the Power-over-Ethernet 50V/50W of 802.3at, the USB power supply, 2W, remote equipment radio frequency output 1W, its radio frequency operation frequency is 900MHZ, and receiving sensitivity is-95dBm.The power supply power supply is the Power-over-Ethernet 50V/50W of 802.3at, USB power supply, 2W.
Claims (7)
1. remote local area network radio switch-in method based on 802.11 technology, its concrete grammar is: select to meet the baseband module of 802.11 modulating/demodulatings and control, the low carrier frequency radio-frequency module that is connected with baseband module, make its composition meet low carrier frequency transceiver under 802.11 modulating/demodulatings and the control standard; Employing meets under 802.11 modulating/demodulatings and the control standard hangs down the method for designing of the automatic modulation of carrier frequency transceiver transmit power, and reserves USB interface and power supply connection, RS232 interface, universaling I/O port, the Ethernet interface of band RJ45 and the connection of powering.
2. a kind of remote local area network radio switch-in method based on 802.11 technology according to claim 1 is characterized in that: employing be 802.11 modulating/demodulatings and the low carrier frequency transmission solution of control under the standard.
3. a kind of remote local area network radio switch-in method based on 802.11 technology according to claim 1 is characterized in that: its low carrier frequency transceiver transmit power method for designing of modulation automatically meets 802.11 modulating/demodulatings and controls and hang down the carrier frequency transceiver transmit power method for designing of modulation automatically under the standard.
4. a kind of remote local area network radio switch-in method based on 802.11 technology according to claim 1 is characterized in that: the low carrier frequency transceiver of its composition meets the design of low carrier frequency transceiver under 802.11 modulating/demodulatings and the control standard.
5. equipment based on the remote local area network radio switch-in method of 802.11 technology, it is characterized in that: equipment comprises central apparatus, remote equipment, they form identical, can select to realize corresponding function by being provided with, comprise the baseband module that meets 802.11 modulating/demodulatings and control, the low carrier frequency radio-frequency module that is connected with baseband module.
6. the equipment of a kind of remote local area network radio switch-in method based on 802.11 technology according to claim 5, it is characterized in that: the operating frequency of its low carrier frequency radio-frequency module is arbitrary frequency range of 300MHZ-900MHZ.
7. the equipment of a kind of remote local area network radio switch-in method based on 802.11 technology according to claim 5 is characterized in that: the Ethernet interface and the power supply connection that are reserved with USB interface and power supply connections, RS232 interface, universaling I/O port, band RJ 45 on the equipment.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201010135671 CN101827456A (en) | 2010-03-24 | 2010-03-24 | 802.11 technology-based wireless access method and device for remote local area network |
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| CN 201010135671 CN101827456A (en) | 2010-03-24 | 2010-03-24 | 802.11 technology-based wireless access method and device for remote local area network |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1445964A (en) * | 2003-03-03 | 2003-10-01 | 北京三明商用电子设备有限公司 | Wireless network access switching port |
| CN1486035A (en) * | 2002-09-28 | 2004-03-31 | 深圳市中兴通讯股份有限公司 | Wirless accessing device |
| US20060008020A1 (en) * | 2004-07-07 | 2006-01-12 | Blankenship Yufei W | Method and apparatus for determining channel quality and performing adaptive modulation/coding within a multicarrier communication system |
| CN101267455A (en) * | 2008-04-25 | 2008-09-17 | 中兴通讯股份有限公司 | WiMAX terminal and terminal system based on WUSB technology |
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2010
- 2010-03-24 CN CN 201010135671 patent/CN101827456A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1486035A (en) * | 2002-09-28 | 2004-03-31 | 深圳市中兴通讯股份有限公司 | Wirless accessing device |
| CN1445964A (en) * | 2003-03-03 | 2003-10-01 | 北京三明商用电子设备有限公司 | Wireless network access switching port |
| US20060008020A1 (en) * | 2004-07-07 | 2006-01-12 | Blankenship Yufei W | Method and apparatus for determining channel quality and performing adaptive modulation/coding within a multicarrier communication system |
| CN101267455A (en) * | 2008-04-25 | 2008-09-17 | 中兴通讯股份有限公司 | WiMAX terminal and terminal system based on WUSB technology |
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Application publication date: 20100908 |