CN101888321A - Ethernet multipoint access method, Ethernet system and equipment - Google Patents
Ethernet multipoint access method, Ethernet system and equipment Download PDFInfo
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- CN101888321A CN101888321A CN200910083967XA CN200910083967A CN101888321A CN 101888321 A CN101888321 A CN 101888321A CN 200910083967X A CN200910083967X A CN 200910083967XA CN 200910083967 A CN200910083967 A CN 200910083967A CN 101888321 A CN101888321 A CN 101888321A
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Abstract
The invention discloses an Ethernet multipoint access method. The method comprises that: a network side cable connected with a local side device adopts a twisted-pair cable; a user side cable connected with the network side cable adopts a bus type twisted-pair cable; one or more terminal devices on the user side are connected to a network through the bus type twisted-pair cable; and the local side device and each terminal device perform half-duplex mode communication through the twisted-pair cables. The invention also discloses an Ethernet system, the local side device and the terminal device. The technical scheme of the invention reduces the Ethernet indoor multipoint access cost.
Description
Technical field
The present invention relates to data communication technology field, refer to a kind of Ethernet multipoint access method, a kind of Ethernet system, a kind of local side apparatus and a kind of terminal equipment especially.
Background technology
At present, the existing Ethernet broadband access technology is the single-point access technology, and the data frame transfer mode is full-duplex mode.Very-high-bit-rate digital subscriber loop (VDSL for example, Very-high-bit-rateDigital Subscriber loop) technology, Long Range Ethernet (LRE, Long Range Ethernet) technology, local area network (LAN) (LAN, Local Area Network) technology, ADSL (Asymmetric Digital Subscriber Line) ADSL, Asymmetric Digital Subscriber Loop)) technology and EPON (XPON) technology etc.
The single-point access technology can only satisfy the indoor station terminal of user and enjoy broadband services, promptly has only the station terminal can access network based on ethernet.Yet along with the raising of people's living standard, often have many station terminals to need access network based on ethernet in the one family, for example, parlor and bedroom have computer to need broadband access network etc. respectively.
In order to satisfy the indoor demand to an access of user, existing solution is at the indoor increase one family of user gateway device, inserts to support the multiple spot under a plurality of ports.
Owing to need to increase the one family gateway, the scheme cost that therefore existing support indoor multipoint inserts is higher.
Summary of the invention
The invention provides a kind of Ethernet multipoint access method, this method has reduced the cost of realizing the Ethernet indoor multipoint access.
The present invention also provides a kind of Ethernet system, and this system has reduced the cost of realizing the Ethernet indoor multipoint access.
The invention also discloses a kind of local side apparatus and terminal equipment, these equipment have reduced realizes the cost that Ethernet indoor multipoint inserts.
For achieving the above object, technical scheme of the present invention specifically is achieved in that
The invention discloses a kind of Ethernet multipoint access method, it is characterized in that, this method comprises:
The network side cable that is connected with local side apparatus adopts twisted-pair feeder;
The user side cable that is connected with network side cable adopts bus type twisted-pair;
One or more terminal equipments of user side are by the bus type twisted-pair access network;
Local side apparatus carries out the communicating by letter of semiduplex mode with each terminal equipment by twisted-pair feeder by the local side apparatus of communicating by letter that twisted-pair feeder carries out semiduplex mode with each terminal equipment.
The invention also discloses a kind of Ethernet system, comprise: one or more terminal equipments of the local side apparatus of network side and user side, it is characterized in that, local side apparatus connects the twisted-pair feeder of network side, the twisted-pair feeder of network side connects the bus-type twisted-pair feeder of user side, and one or more terminal equipments of user side are connected one by one with a plurality of access points of bus-type twisted-pair feeder respectively;
Local side apparatus is used for carrying out communicating by letter of semiduplex mode by twisted-pair feeder with each terminal equipment;
Each terminal equipment is used for carrying out communicating by letter of semiduplex mode by twisted-pair feeder with local side apparatus.
The invention also discloses a kind of local side apparatus, this local side apparatus connects the twisted-pair feeder of network side, the twisted-pair feeder of network side connects the bus-type twisted-pair feeder of user side, and one or more terminal equipments of user side are connected one by one with a plurality of access points of bus-type twisted-pair feeder respectively;
This local side apparatus is used for carrying out communicating by letter of semiduplex mode by twisted-pair feeder with each terminal equipment.
The invention also discloses a kind of terminal equipment, this terminal equipment is connected with an access point of the bus-type twisted-pair feeder of user side, and the bus-type twisted-pair feeder of user side is connected with the twisted-pair feeder of network side, and the twisted-pair feeder of network side connects local side apparatus;
This terminal equipment is used for carrying out communicating by letter of semiduplex mode by twisted-pair feeder with local side apparatus.
As seen from the above technical solution, this network side cable that is connected with local side apparatus of the present invention adopts twisted-pair feeder, the user side cable that is connected with network side cable adopts bus type twisted-pair, one or more terminal equipments of user side are by the bus type twisted-pair access network, local side apparatus and each terminal equipment carry out the technical scheme of communicating by letter of semiduplex mode by twisted-pair feeder, because when realizing that Ethernet indoor multipoint inserts, do not need an extra home gateway, therefore greatly reduce the realization cost.
Description of drawings
Fig. 1 is the flow chart of a kind of Ethernet multipoint access method of the embodiment of the invention;
Fig. 2 is the networking schematic diagram of the Ethernet system in the embodiment of the invention;
Fig. 3 is the composition structured flowchart of a kind of local side apparatus in the embodiment of the invention;
Fig. 4 is the composition structured flowchart of a kind of terminal equipment in the embodiment of the invention.
Embodiment
Fig. 1 is the flow chart of a kind of Ethernet multipoint access method of the embodiment of the invention.As shown in Figure 1, this method comprises:
In Fig. 1, step 101 to step 103 is processes of networking, does not limit sequencing, in step 101 execution in step 104 to the basis of step 103.Wherein, under the application scenarios at family, network side cable is service wire in broadband access, and the user side cable is the house line, and one or more terminals of user side are the indoor one or more terminals of user.
When realizing that according to technical scheme shown in Figure 1 Ethernet indoor multipoint inserts not needs extra home gateway is set, therefore can greatly reduce the realization cost.
For making purpose of the present invention, technical scheme and advantage clearer, introduce the key problem in technology point among the present invention below respectively.
(1) network side cable adopts twisted-pair feeder, is the half-duplex operation mode on the line
Network side cable adopts the benefit of twisted-pair feeder to comprise: the cable resource can arrive each household, and the cable of each household is independently, and is point-to-point; Can support at a high speed to the family bandwidth.
(2) the user side cable adopts the bus-type twisted-pair feeder, is the half-duplex operation mode on the line
Because the indoor telephone wire that generally all has bus-type of user, and telephone wire at present is a twisted-pair feeder, therefore can directly utilize existing resources.
And, because network side cable and user side cable are twisted-pair feeder, therefore can directly connect, do not need the medium relaying to change accordingly.
(3) port that is connected with twisted-pair feeder of local side apparatus and terminal equipment is supported the data transmit-receive of semiduplex mode
In existing twisted pair telephone ethernet device (comprising local side apparatus and terminal equipment), twisted pair telephone physical layer (PHY) chip that it is connected with transmission line is not support the half-duplex data-transmission mode, corresponding to the twisted pair media PHY chip that is connected with twisted-pair feeder that is in the present embodiment in the ethernet device is not support the half-duplex data-transmission mode, therefore, need in the twisted pair media PHY of ethernet device module, increase in embodiments of the present invention and realize semiduplex functional module, and its supporting MAC layer chip also to be supported the half-duplex data-transmission mode.
Employing csma/collision detection in embodiments of the present invention (CSMA/CD, Carrier Sense Multiple Access/Collision Detect) agreement realizes the half-duplex operation between local side apparatus and the terminal equipment.Adopting the CSMA/CD agreement to realize the local side apparatus of half-duplex operation or terminal equipment when having Frame to send, carry out following steps: A, whether intercept the twisted-pair feeder circuit occupied, is execution in step B then, otherwise execution in step C; B, keep out of the way a predetermined stand-by period, return steps A; C, send Frame to the twisted-pair feeder circuit.
For Ethernet CSMA/CD technology, standard code for 10Base-T, inserting radius is 2000 meters, for 100Base-T, inserting radius is 200 meters, and for 1000Base-T, adopt under carrier extend (expanding to 4096bit from the 512bit) situation, can support 160 meters in theory.
The twisted pair telephone medium PHY chip of existing Ethernet equipment has adopted the PAM coding of similar kilomega network, realize full-duplex communication, and also with reference to free time (Idle) the frame send mode of gigabit technology when free of data sends, promptly when data are arranged, send data, ceaselessly send the Idle frame during free of data on the line.In order to realize technical scheme of the present invention,, in embodiments of the present invention, need in existing twisted pair media PHY chip, realize following 2 functions: can intercept carrier wave simultaneously in order to maximally utilise existing resource; When free of data, do not send any coding.
Fig. 2 is the networking schematic diagram of the Ethernet system in the embodiment of the invention.As shown in Figure 2, this Ethernet system comprises: one or more terminal equipments of the local side apparatus of network side and user side, signal is except 3 terminal equipments among Fig. 2.Wherein local side apparatus connects the twisted-pair feeder of network side, and the twisted-pair feeder of network side connects the bus-type twisted-pair feeder of user side, and one or more terminals of user side are connected one by one with a plurality of access points of bus-type twisted-pair feeder respectively.
In Fig. 2, local side apparatus is used for carrying out communicating by letter of semiduplex mode by twisted-pair feeder with each terminal equipment; Equally, each terminal equipment is used for carrying out communicating by letter of semiduplex mode by twisted-pair feeder with local side apparatus.The embodiment of the invention adopts the semiduplex mode of CSMA/CD mode.
Fig. 3 is the composition structured flowchart of a kind of local side apparatus in the embodiment of the invention.Need to prove that local side apparatus among Fig. 3 is the local side apparatus in the system shown in Figure 2.Local side apparatus shown in Figure 3 connects the twisted-pair feeder of network side, and the twisted-pair feeder of network side connects the bus-type twisted-pair feeder of user side, and one or more terminal equipments of user side are connected one by one with a plurality of access points of bus-type twisted-pair feeder respectively; And this this local side apparatus is used for carrying out communicating by letter of semiduplex mode by twisted-pair feeder with each terminal equipment.
As shown in Figure 3, this local side apparatus comprises: carrier sense module 301 and data transmission blocks 302, wherein:
Fig. 4 is the composition structured flowchart of a kind of terminal equipment in the embodiment of the invention.Need to prove that terminal equipment among Fig. 4 is the terminal equipment in the system shown in Figure 2.Terminal equipment shown in Figure 4 is connected with an access point of the bus-type twisted-pair feeder of user side, and the bus-type twisted-pair feeder of user side is connected with the twisted-pair feeder of network side, and the twisted-pair feeder of network side connects local side apparatus; And this terminal equipment is used for carrying out communicating by letter of semiduplex mode by twisted-pair feeder with local side apparatus.
As shown in Figure 4, this terminal equipment comprises: carrier sense module 401 and data transmission blocks 402, wherein:
Carrier sense module 401, whether occupied, be to keep out of the way then whether continue to intercept the twisted-pair feeder circuit after a predetermined stand-by period more occupied, up to listening to twisted-pair feeder circuit notification data sending module 402 when idle if being used to intercept the twisted-pair feeder circuit;
Data transmission blocks 402 is used for sending Frame to the twisted-pair feeder circuit when receiving the notice that carrier sense module 401 sends.
In sum, the embodiment of the invention is this, the network side cable that is connected with local side apparatus adopts twisted-pair feeder, the user side cable that is connected with network side cable adopts bus type twisted-pair, one or more terminal equipments of user side are by the bus type twisted-pair access network, local side apparatus and each terminal equipment carry out the technical scheme of communicating by letter of semiduplex mode by twisted-pair feeder, because when realizing that Ethernet indoor multipoint inserts, do not need an extra home gateway, therefore greatly reduce the realization cost.
The above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention, all any modifications of being made within the spirit and principles in the present invention, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. an Ethernet multipoint access method is characterized in that, this method comprises:
The network side cable that is connected with local side apparatus adopts twisted-pair feeder;
The user side cable that is connected with network side cable adopts bus type twisted-pair;
One or more terminal equipments of user side are by the bus type twisted-pair access network;
Local side apparatus carries out communicating by letter of semiduplex mode with each terminal equipment by twisted-pair feeder.
2. the method for claim 1 is characterized in that, local side apparatus adopts csma/collision detection CSMA/CD agreement to carry out communicating by letter of semiduplex mode with each terminal equipment.
3. method as claimed in claim 2 is characterized in that, described local side apparatus carries out communicating by letter of semiduplex mode with each terminal equipment employing csma/collision detection CSMA/CD agreement and comprises:
Local side apparatus/terminal equipment is carried out following steps when having Frame to send:
Whether A, to intercept the twisted-pair feeder circuit occupied, is execution in step B then, otherwise execution in step C;
B, keep out of the way a predetermined stand-by period, return steps A;
C, send Frame to the twisted-pair feeder circuit.
4. Ethernet system, comprise: one or more terminal equipments of the local side apparatus of network side and user side, it is characterized in that, local side apparatus connects the twisted-pair feeder of network side, the twisted-pair feeder of network side connects the bus-type twisted-pair feeder of user side, and one or more terminal equipments of user side are connected one by one with a plurality of access points of bus-type twisted-pair feeder respectively;
Local side apparatus is used for carrying out communicating by letter of semiduplex mode by twisted-pair feeder with each terminal equipment;
Each terminal equipment is used for carrying out communicating by letter of semiduplex mode by twisted-pair feeder with local side apparatus.
5. system as claimed in claim 3 is characterized in that, described local side apparatus comprises: carrier sense module and data transmission blocks, wherein,
The carrier sense module, whether occupied, be to keep out of the way then whether continue to intercept the twisted-pair feeder circuit after a predetermined stand-by period more occupied, up to listening to twisted-pair feeder circuit notification data sending module when idle if being used to intercept the twisted-pair feeder circuit;
Data transmission blocks is used for sending Frame to the twisted-pair feeder circuit when receiving the notice that the carrier sense module sends.
6. system as claimed in claim 3 is characterized in that, described terminal equipment comprises: carrier sense module and data transmission blocks, wherein,
The carrier sense module, whether occupied, be to keep out of the way then whether continue to intercept the twisted-pair feeder circuit after a predetermined stand-by period more occupied, up to listening to twisted-pair feeder circuit notification data sending module when idle if being used to intercept the twisted-pair feeder circuit;
Data transmission blocks is used for sending Frame to the twisted-pair feeder circuit when receiving the notice that the carrier sense module sends.
7. local side apparatus, it is characterized in that, this local side apparatus connects the twisted-pair feeder of network side, and the twisted-pair feeder of network side connects the bus-type twisted-pair feeder of user side, and one or more terminal equipments of user side are connected one by one with a plurality of access points of bus-type twisted-pair feeder respectively;
This local side apparatus is used for carrying out communicating by letter of semiduplex mode by twisted-pair feeder with each terminal equipment.
8. local side apparatus as claimed in claim 7 is characterized in that, this local side apparatus comprises: carrier sense module and data transmission blocks, wherein,
The carrier sense module, whether occupied, be to keep out of the way then whether continue to intercept the twisted-pair feeder circuit after a predetermined stand-by period more occupied, up to listening to twisted-pair feeder circuit notification data sending module when idle if being used to intercept the twisted-pair feeder circuit;
Data transmission blocks is used for sending Frame to the twisted-pair feeder circuit when receiving the notice that the carrier sense module sends.
9. a terminal equipment is characterized in that, this terminal equipment is connected with an access point of the bus-type twisted-pair feeder of user side, and the bus-type twisted-pair feeder of user side is connected with the twisted-pair feeder of network side, and the twisted-pair feeder of network side connects local side apparatus;
This terminal equipment is used for carrying out communicating by letter of semiduplex mode by twisted-pair feeder with local side apparatus.
10. terminal equipment as claimed in claim 9 is characterized in that, this terminal equipment comprises: carrier sense module and data transmission blocks, wherein,
The carrier sense module, whether occupied, be to keep out of the way then whether continue to intercept the twisted-pair feeder circuit after a predetermined stand-by period more occupied, up to listening to twisted-pair feeder circuit notification data sending module when idle if being used to intercept the twisted-pair feeder circuit;
Data transmission blocks is used for sending Frame to the twisted-pair feeder circuit when receiving the notice that the carrier sense module sends.
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| Application Number | Priority Date | Filing Date | Title |
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| CN200910083967XA CN101888321A (en) | 2009-05-13 | 2009-05-13 | Ethernet multipoint access method, Ethernet system and equipment |
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| CN200910083967XA CN101888321A (en) | 2009-05-13 | 2009-05-13 | Ethernet multipoint access method, Ethernet system and equipment |
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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 |
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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 |
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Open date: 20101117 |