CN102255783A - Method for accessing local area network under code division multiple and code division multiple access local area network - Google Patents
Method for accessing local area network under code division multiple and code division multiple access local area network Download PDFInfo
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- CN102255783A CN102255783A CN2011101778420A CN201110177842A CN102255783A CN 102255783 A CN102255783 A CN 102255783A CN 2011101778420 A CN2011101778420 A CN 2011101778420A CN 201110177842 A CN201110177842 A CN 201110177842A CN 102255783 A CN102255783 A CN 102255783A
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Abstract
The invention discloses a method for accessing a local area network under code division multiple access and a code division multiple access local area network, which are used for solving the technical problems of excessive cables, difficulty in wiring for network access and the like caused by a star-shaped network structure existing in the prior art. The method of the code division multiple access local area network comprises the following steps: a twisted-pair bus is adopted as a cable connected with superior network equipment; a plurality of personal computers access a network through the twisted-pair bus; and the personal computers communicate on the twisted-pair bus by adopting a code division multiple access protocol. The code division multiple access local area network comprises a switch, the personal computers, the twisted-pair bus and a protocol converting module, wherein each personal computer communicates on the twisted-pair bus by adopting a code division multiple access protocol.
Description
Technical field
The present invention relates to network technology, relate in particular to a kind of method of code division multiple access access to LAN and the local area network (LAN) that the employing code division multiple access mode inserts.
Background technology
Ethernet is the most general communication protocol standard that existing now local area network (LAN) adopts, and current in other words local area network (LAN) is exactly an Ethernet.Basically, Ethernet is made of twisted-pair cable, switch etc.In the star configuration structure, switches/hubs makes computer, printer and work station interconnect each other by cable.All PCs of the network requirement of this structure all will directly be received on the switch (or hub), and this just causes network layout " last hundred meters " the too much problem of cable, brings a lot of difficulties to network insertion.
Open day be that on 01 17th, 2007, publication number are that the patent documentation of CN 1898754A discloses such technical scheme: a kind of cabling medium, comprise many twisted-pair feeders that are contained in inside pipe casing, every corresponding lay length that twisted-pair feeder has, be defined as twisted-pair feeder each other round stranded one whole distance of enclosing, change in the corresponding lay length at least one targetedly along the length of cabling medium, in one embodiment, the length along cabling medium changes core strand length targetedly.This cabling medium is designed to satisfy CAT5, CAT 5E or CAT 6 cable connection requests, even and under the message transmission rate of 10GBIT/SEC, also demonstrate lower outside and internal crosstalk characteristic.Though the effectively characteristic of improving the netting twine cable of this scheme, the frame mode of network do not obtain improvement, connecting the employed network connection quantity of the network user when networking can not reduce.
Summary of the invention
The present invention mainly be solve existing in prior technology since the cable that the Star Network structure is brought too much, bring technical problem such as difficult wiring to network insertion, the invention provides a kind of method of code division multiple access access to LAN, solved technical problems such as the network cable is too much; The invention provides a kind of code division multiple access local area network (LAN), this scheme makes the network number of cables reduce in a large number, for the network insertion wiring brings convenience.
The present invention is directed to the prior art problem is mainly solved by following technical proposals:
A kind of method of code division multiple access access to LAN, this method comprises:
The cable that is connected with higher level's network equipment adopts multiple twin line style bus;
One or more personal computers are gone into network by described multiple twin line style bus interface;
Personal computer adopts the code division multiple access agreement to communicate on multiple twin line style bus.Higher level's network equipment is meant equipment such as switch, the webserver.
The multiple twin line style bus of using is that twisted-pair feeder with differential signal transmission is as bus.
A kind of code division multiple access local area network (LAN), comprise switch, personal computer, also comprise multiple twin line style bus, protocol conversion module, multiple twin line style bus is connected to switch by protocol conversion module, and one or more personal computers are connected on the multiple twin line style bus by protocol conversion module; Each personal computer, the employing code division multiple access agreement communicates on multiple twin line style bus.
Personal computer adopts multiple twin line style bus connecting mode, therefore, has saved a large amount of connection netting twines of personal computer to switch.Because the shared transmission line of each network user on the multiple twin line style bus, so must adopt a kind of coding techniques to make user's shared data path on all buses.In various coding techniquess, CDMA (Code Division Multiple Access) (CDMA) is best suited for of the present invention.The several characteristics of CDMA (Code Division Multiple Access) is:
● same bandwidth multiple signals transmit simultaneously;
● antijamming capability is strong.Because adopt the loop-type bus connecting method, the interference meeting on the bus is very big.The high anti-interfering performance of CDMA makes interference signal " flood " useful signal and does not influence the transmission of useful signal;
● the transmittability of small and weak signal is strong.CDMA has identification and reduces the ability of small and weak signal;
● the transfer of data between each user is independent of each other, and flow is identical.
Owing to used the respective protocol modular converter, also still use Ethernet protocol at the network side on the personal computer and more than the switch, hardware environment is not made any change, and is very easy to use.
This local area network (LAN) connectivity scenario also can not use switch in small-scale network, multiple twin line style bus directly is connected on the webserver, saves switch and the personal computer connection netting twine to switch.
As preferably, protocol conversion module is the module that Ethernet protocol and code division multiple access agreement are changed mutually.This module is made separate unit or is installed on the Ethernet card, carries out Ethernet protocol to the code division multiple access protocol conversion to sending signal, carries out the code division multiple access agreement to received signal to the Ethernet protocol conversion.
As preferably, multiple twin line style bus is that twisted-pair feeder with differential signal transmission is as bus.Signal on the bus transmits in the differential driving mode, has improved transmission rate and reliability.
As preferably, also comprise the mutual inductance pincers, the mutual inductance tonger has two output lines, and the mutual inductance clamp is electrical signal of reaction on the solid wire of multiple twin line style bus.Adopt the mutual inductance pincers that personal computer is inserted multiple twin line style bus, need not cut off bus, so access point can be selected and change flexibly.
As preferably, each personal computer respectively is provided with an access point on two lines of multiple twin line style bus, respectively press from both sides mutual inductance pincers on two access points, with the output line series connection of two mutual inductance pincers, the output line after the series connection is connected to personal computer by protocol conversion module.The output line of two mutual inductance pincers is together in series to improve mutual inductance efficient.
As preferably, also comprise the network printer, the network printer is connected on the multiple twin line style bus by protocol conversion module.On the code division multiple access local area network (LAN), also can connect network shared devices such as printer sharing.
The beneficial effect that the present invention brings is, saves a large amount of network connectivities, and effect is especially remarkable on fairly large local area network (LAN) is built, for network layout, construction bring great convenience, network construction cost is reduced, and the network user need not change the software and hardware environment for use, very easy to use.
Description of drawings
Fig. 1 is a kind of network topological diagram of the present invention;
Fig. 2 is a PC access point schematic diagram on the multiple twin line style bus of the present invention;
Fig. 3 is a mutual inductance pincers serial connection schematic diagram of the present invention.
Among the figure: the 1st, switch, the 2nd, protocol conversion module, the 3rd, access point, the 4th, multiple twin line style bus, the positive-phase signal line of 4-1 differential signal, 4-2 are the antiphase holding wires of differential signal, and 4-3,4-4 are mutual inductance pincers series connection output lines, the 5th, personal computer, the 6th, printer sharing, the 7th, mutual inductance pincers.
Embodiment
Below by embodiment, and in conjunction with the accompanying drawings, technical scheme of the present invention is further described in detail.
Embodiment: as Fig. 1, Fig. 2, shown in Figure 3, the present invention is a kind of code division multiple access local area network (LAN), comprise switch 1, personal computer 5, multiple twin line style bus 4, protocol conversion module 2, multiple twin line style bus 4 is connected to switch 1 by protocol conversion module 2, and one or more personal computers 5 are connected on the multiple twin line style bus 4 by protocol conversion module 2, mutual inductance pincers 7; Each personal computer 5 employing code division multiple access agreement on multiple twin line style bus 4 communicates.
Two mutual inductance pincers 7 are on positive bit line 4-1 and antiphase holding wire 4-2 that access point 3 places (on forward and reverse differential lines of bus same length) clamps respectively at differential signal, and the output line of two mutual inductance pincers 7 is connected.
In this example, protocol conversion module 2 connects as separate unit, and promptly making becomes the transducer that Ethernet and code division multiple access agreement are changed mutually.In the PC side, protocol conversion module 2 is connected the PC Ethernet interface by twisted-pair feeder, is connected to multiple twin line style bus 4 by output line 4-3 and 4-4 after 7 series connection of mutual inductance pincers, and printer sharing 6 usefulness same way as are connected to multiple twin line style bus 4; At exchanger side, protocol conversion module 2 uses twisted-pair feeder to be connected to the port of switch 1, and protocol conversion module 2 connects the top of multiple twin line style bus 4, and multiple twin line style bus 4 adopts differential driving and makes annular and connects.
Mutual inductance pincers 7 adopt the mutual inductor of two semicircles, and pincers utilize electromagnetic induction principle to carry out signal transmitting and receiving on multiple twin line style bus 4.
So the present invention has a large amount of network connectivities of saving, is features such as network layout, construction bring great convenience, and network construction cost reduces, and the network user need not change the software and hardware environment for use, and is very easy to use.
The foregoing description only is preferred embodiment of the present invention, is not to be used to limit protection scope of the present invention, every change of being made within spirit of the present invention and principle, is equal to replacement, modification etc., all belongs to protection scope of the present invention.
Claims (8)
1. the method for a code division multiple access access to LAN is characterized in that, this method comprises:
The cable that is connected with higher level's network equipment adopts multiple twin line style bus;
One or more personal computers are gone into network by described multiple twin line style bus interface;
The personal computer or the network equipment adopt the code division multiple access agreement to communicate on multiple twin line style bus.
2. according to the method for the described a kind of code division multiple access access to LAN of claim 1, it is characterized in that: described multiple twin line style bus is that twisted-pair feeder with differential signal transmission is as bus.
3. code division multiple access local area network (LAN), comprise switch, personal computer, it is characterized in that: also comprise multiple twin line style bus, protocol conversion module, described multiple twin line style bus is connected to switch by protocol conversion module, and one or more personal computers are connected on the multiple twin line style bus by protocol conversion module;
Each personal computer, the employing code division multiple access agreement communicates on multiple twin line style bus.
4. according to the described a kind of code division multiple access local area network (LAN) of claim 3, it is characterized in that: described protocol conversion module is the module that Ethernet protocol and code division multiple access agreement are changed mutually.
5. according to the described a kind of code division multiple access local area network (LAN) of claim 3, it is characterized in that: described multiple twin line style bus is that twisted-pair feeder with differential signal transmission is as bus.
6. according to claim 3 or 5 described a kind of code division multiple access local area network (LAN)s, it is characterized in that: also comprise the mutual inductance pincers, described mutual inductance tonger has two output lines, and the mutual inductance clamp is electrical signal of reaction on the solid wire of multiple twin line style bus.
7. according to the described a kind of code division multiple access local area network (LAN) of claim 6, it is characterized in that: each personal computer respectively is provided with an access point on two lines of multiple twin line style bus, respectively press from both sides mutual inductance pincers on two access points, with the output line series connection of two mutual inductance pincers, the output line after the series connection is connected to personal computer by protocol conversion module.
8. according to the described a kind of code division multiple access local area network (LAN) of claim 3, it is characterized in that: also comprise the network printer, the described network printer is connected on the multiple twin line style bus by protocol conversion module.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011101778420A CN102255783A (en) | 2011-06-29 | 2011-06-29 | Method for accessing local area network under code division multiple and code division multiple access local area network |
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| CN2011101778420A CN102255783A (en) | 2011-06-29 | 2011-06-29 | Method for accessing local area network under code division multiple and code division multiple access local area network |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113205918A (en) * | 2021-04-30 | 2021-08-03 | 阳光电源股份有限公司 | Communication transmission cable |
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| US20030179724A1 (en) * | 2002-03-21 | 2003-09-25 | Jeong-Hyun Seo | High-speed wireless data communication card device for simultaneous data/voice communications |
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| CN101888321A (en) * | 2009-05-13 | 2010-11-17 | 杭州华三通信技术有限公司 | Ethernet multipoint access method, Ethernet system and equipment |
| CN201828671U (en) * | 2010-03-08 | 2011-05-11 | 胡晓剑 | Cable identifying probe |
| CN202127414U (en) * | 2011-06-29 | 2012-01-25 | 苏州科雷芯电子科技有限公司 | Code division multiple access local area network |
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| CN1372740A (en) * | 1999-07-09 | 2002-10-02 | 马利布网络有限公司 | TCP/IP packet-centric wireless transmission system architecture |
| US20030179724A1 (en) * | 2002-03-21 | 2003-09-25 | Jeong-Hyun Seo | High-speed wireless data communication card device for simultaneous data/voice communications |
| CN101123553A (en) * | 2007-09-11 | 2008-02-13 | 东南大学 | Mobile wireless local network access device and method based on code division multi-address technology |
| CN101888321A (en) * | 2009-05-13 | 2010-11-17 | 杭州华三通信技术有限公司 | Ethernet multipoint access method, Ethernet system and equipment |
| CN201828671U (en) * | 2010-03-08 | 2011-05-11 | 胡晓剑 | Cable identifying probe |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113205918A (en) * | 2021-04-30 | 2021-08-03 | 阳光电源股份有限公司 | Communication transmission cable |
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Application publication date: 20111123 |