CN202127414U - Code division multiple access local area network - Google Patents
Code division multiple access local area network Download PDFInfo
- Publication number
- CN202127414U CN202127414U CN 201120223472 CN201120223472U CN202127414U CN 202127414 U CN202127414 U CN 202127414U CN 201120223472 CN201120223472 CN 201120223472 CN 201120223472 U CN201120223472 U CN 201120223472U CN 202127414 U CN202127414 U CN 202127414U
- Authority
- CN
- China
- Prior art keywords
- code division
- division multiple
- multiple access
- local area
- bus
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Small-Scale Networks (AREA)
Abstract
The utility model discloses a code division multiple access local area network, aiming to solving the technical problem of difficult network cabling for network accessing due to too much cables needed by a star-shaped network structure in the prior art. The code division multiple access local area network comprises a bus and a personal computer, wherein the bus connected with network equipment at a higher level is twisted-pair bus, the personal computer is connected with the network through the twisted-pair bus, and the personal computer adopts a code division multiple access protocol to communicate on the twisted-pair bus.
Description
Technical field
The utility model relates to network technology, relates in particular to the local area network (LAN) that a kind of 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 up of twisted-pair cable, switch etc.In the star configuration structure, switches/hubs makes computer, printer and work station interconnect each other through 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; Length along cabling medium changes at least one in the corresponding lay length targetedly, in one embodiment, changes core strand length targetedly along the length of cabling medium.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, when networking, connecting the employed network connection quantity of the network user can not reduce.
Summary of the invention
The utility model 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 utility model 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 utility model mainly is able to solve through following technical proposals to the prior art problem: 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 through protocol conversion module, and one or more personal computers are connected on the multiple twin line style bus through 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 is so must adopt a kind of coding techniques to make the user's shared data path on all buses.In various coding techniquess, CDMA (CDMA) is best suited for the utility model.The several characteristics of CDMA 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 each other.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 with 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 through protocol conversion module.Be together in series the output of two mutual inductance pincers to improve mutual inductance efficient.
As preferably, also comprise the network printer, the network printer is connected on the multiple twin line style bus through 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 utility model brings is; Save a large amount of network connectivities; Effect is especially remarkable on fairly large local area network (LAN) is built, and 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, and is very easy to use.
Description of drawings
Fig. 1 is a kind of network topological diagram of the utility model;
Fig. 2 is a PC access point sketch map on the multiple twin line style bus of the utility model;
Fig. 3 is the mutual inductance pincers serial connection sketch map of the utility model.
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 through embodiment, and combine accompanying drawing, the technical scheme of the utility model is further specified.
Embodiment: like Fig. 1, Fig. 2, shown in Figure 3; The utility model 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 through protocol conversion module 2, and one or more personal computers 5 are connected on the multiple twin line style bus 4 through 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 the essentially identical forward and reverse differential lines of its 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 each other.In the PC side, protocol conversion module 2 is connected the PC Ethernet interface through twisted-pair feeder, is connected to multiple twin line style bus 4 through 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 utlity model has and save a large amount of network connectivities, be characteristics 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 the preferred embodiment of the utility model; It is not the protection range that is used to limit the utility model; The change of being made within every spirit and principle at the utility model, be equal to replacement, modification etc., all belong to the protection range of the utility model.
Claims (6)
1. 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, said multiple twin line style bus is connected to switch through protocol conversion module, and one or more personal computers are connected on the multiple twin line style bus through protocol conversion module;
Each personal computer, the employing code division multiple access agreement communicates on multiple twin line style bus.
2. according to the said a kind of code division multiple access local area network (LAN) of claim 1, it is characterized in that: said protocol conversion module is the module that Ethernet protocol and code division multiple access agreement are changed each other.
3. according to the said a kind of code division multiple access local area network (LAN) of claim 1, it is characterized in that: said multiple twin line style bus is that twisted-pair feeder with differential signal transmission is as bus.
4. according to claim 1 or 3 said a kind of code division multiple access local area network (LAN)s, it is characterized in that: also comprise the mutual inductance pincers, said 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.
5. according to the said a kind of code division multiple access local area network (LAN) of claim 4; 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 through protocol conversion module.
6. according to the said a kind of code division multiple access local area network (LAN) of claim 1, it is characterized in that: also comprise the network printer, the said network printer is connected on the multiple twin line style bus through protocol conversion module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120223472 CN202127414U (en) | 2011-06-29 | 2011-06-29 | Code division multiple access local area network |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120223472 CN202127414U (en) | 2011-06-29 | 2011-06-29 | Code division multiple access local area network |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202127414U true CN202127414U (en) | 2012-01-25 |
Family
ID=45490474
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120223472 Expired - Fee Related CN202127414U (en) | 2011-06-29 | 2011-06-29 | Code division multiple access local area network |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202127414U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102255783A (en) * | 2011-06-29 | 2011-11-23 | 苏州科雷芯电子科技有限公司 | Method for accessing local area network under code division multiple and code division multiple access local area network |
-
2011
- 2011-06-29 CN CN 201120223472 patent/CN202127414U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102255783A (en) * | 2011-06-29 | 2011-11-23 | 苏州科雷芯电子科技有限公司 | Method for accessing local area network under code division multiple and code division multiple access local area network |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101719791A (en) | Optic fiber transceiver having remote monitoring function and data transmission method | |
| CN101170418A (en) | Realization method, system and interface device for Ethernet electric interface compatibility | |
| CN102223273B (en) | Digital sensing network and communication method | |
| CN202127414U (en) | Code division multiple access local area network | |
| CN102255783A (en) | Method for accessing local area network under code division multiple and code division multiple access local area network | |
| CN209400918U (en) | CAN bus network structure | |
| CN203618007U (en) | Multichannel Ethernet cable extender main terminal with optical port | |
| CN102104455B (en) | Remote-end multiple input multiple output method, distributing cabinet and system | |
| CN202189151U (en) | Cross station high speed communication system used for geophysical exploration | |
| CN202231716U (en) | Power line carrier communication structure | |
| CN102148802A (en) | Link negotiation method and distance-enhanced Ethernet equipment | |
| CN107948279A (en) | A kind of power carrier communication method between more switchgear houses | |
| CN203138522U (en) | Medical equipment carrying out communication by power line | |
| CN207801973U (en) | A kind of bridge and internet of things equipment | |
| CN105187221A (en) | Adapter of connecting switch and access point (AP) and network communication system | |
| CN207283600U (en) | A kind of cloud terminal device for being used for industrial Internet of Things | |
| CN201226489Y (en) | POE switch power source adapter | |
| CN111314019A (en) | Method for improving baud rate of parallel bus | |
| CN102647322B (en) | Surpass 485 bus transmission methods of 256 number of terminals restrictions | |
| CN201956547U (en) | Connection device for realizing co-cable transmission of data signals and power signals | |
| CN107948043A (en) | A kind of bridge | |
| CN204361297U (en) | Be applicable to the twisted-pair feeder multiplexer of 10/100Base-TX network | |
| CN202183878U (en) | Digital sensing network system | |
| CN212231612U (en) | EOC network monitoring transmission system with POE | |
| CN218868252U (en) | RJ11 type CAN/RS485 dual-mode communication channel data acquisition terminal |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120125 Termination date: 20170629 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |