CN100358319C - Method and system for realizing data-message transmission - Google Patents
Method and system for realizing data-message transmission Download PDFInfo
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- CN100358319C CN100358319C CNB031541461A CN03154146A CN100358319C CN 100358319 C CN100358319 C CN 100358319C CN B031541461 A CNB031541461 A CN B031541461A CN 03154146 A CN03154146 A CN 03154146A CN 100358319 C CN100358319 C CN 100358319C
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Abstract
The present invention provides a method for realizing data message transmission, which comprises that a sending end converts a data message to be sent in a network into a cell and sends the cell; a receiving end receives the cell and restores the cell to the data message according to the information borne by the cell. The present invention also provides a system based on the method for realizing data message transmission, which comprises user side interface equipment and network side interface equipment. By using the present invention, the transmission of unicast and multicast data messages between the network side and the user side can be realized, particularly when the network side needs to transmit lots of multicast data messages to corresponding user terminals, the multicast data messages are converted into cells and transmitted through a transmission bus, and the cells can be transmitted to corresponding user sides without needing to be duplicated for many times, so that the transmission bottleneck problem does not exist in the transmission of the multicast data messages, network resources are saved, the transmission performance of the network is improved, and consequently, communication equipment realizes the goal of reducing the communication equipment cost when the communication equipment supports the same number of users.
Description
Technical field
The present invention relates to the network communications technology field, be specifically related to a kind ofly realize the method for data message transmission and based on the system that realizes data message transmission method of the present invention.
Background technology
The data message transmission means comprises clean culture, multicast and broadcasting in network communication system at present.
Clean culture is based on point-to-point transmission means; Multicast is based on a bit and sends, the transmission means that specific multiple spot receives; Broadcasting is based on a bit and sends, the transmission means that not specific multiple spot receives.
Along with Streaming Media in the Internet, multimedia service such as video conference and video request program becomes the important component part of message transmission in the network communication system, the transmission of multicast data message in network is more and more, and the multicast transmission mode is more and more important in network communication.
Existing network communications technology, be based on unicast transmission mode and broadcast transmitted mode more, we can utilize clean culture and broadcast transmitted mode to realize the transmission of multicast data message, briefly introduce the method that realizes the multicast data message transmission in the Internet with clean culture and broadcasting below.
The transmission means of clean culture is that single-point sends the single-point reception.This transmission means requires server to duplicate a corresponding message for the user that each request sends message, and sends it to the user.If realize the transmission of multicast data message with mode of unicast, promptly when a plurality of users asked the message that sends identical, server can duplicate the message of a identical content for each user's request, and the request of sending to respectively sends the user of message.Can repeat to transmit the message of identical content like this on the network, take a large amount of system resource; And the message of server repeat replication identical content and transmission, can cause the transfer of data bottleneck, the resource of waste server descends the disposal ability of server.
The broadcast transmitted mode is that single-point sends not specific multiple spot reception.When this transmission means required the user of some nodes in the network to send message, all the user's nodes in the network all received.If realize the transmission of multicast data message with the broadcast transmitted mode, i.e. user's request msg message, all users will receive in the data message network that server sends.But because not every user needs these data messages, cause unnecessary message in network, to transmit, thereby can cause the bottleneck of transfer of data, the waste Internet resources.
In the network communication system of having carried out multimedia services such as Streaming Media, video conference or video request program, realize the transmission of data message if wish advantages of simplicity and high efficiency, must well solve the transmission of multicast data message in network.
Introduce the method that realizes the multicast data message transmission in the characteristic of multicast and the present network communication system below.
The information transmission mode that multicast adopts is that single-point sends specific multiple spot reception.This transmission means requires server the specific a plurality of recipients in network to send datagram.When one or more users asked the message that sends identical, server only copied a message and sends to the network node that receives authority, and the user in the network node is according to own demand reception message.
The transmission method of present existing solution multicast data message in network is based on the ethernet switching module realization.Its specific implementation method as shown in Figure 1.
In Fig. 1, user 1 links to each other with Switching Module by the user interface of Switching Module to user 4; Multicast server links to each other with Switching Module by the network interface of Switching Module.Multicast server sends to Switching Module according to user's application with corresponding multicast data message, and Switching Module passes through the multicast data message that network interface receiving group server sends, and it is left in the shared buffer of Switching Module.If during the multicast data message that user 1 and user 4 need to deposit in the shared buffer, Switching Module copies to user interface 1 and user interface 4 with the corresponding multicast data message of depositing in its shared buffer; User 1 is from user interface 1 receiving multicast data message; User 4 is from user interface 4 receiving multicast data messages.Thereby finish the transmission of multicast data message.
If the number of users that is connected on the Switching Module increases, then the burden of Switching Module copy transmissions increases, and needs the cascade Switching Module.The specific implementation method of cascade Switching Module realization multicast transmission mode as shown in Figure 2.
In Fig. 2, Switching Module 1 to interchange mode piece 5 is formed multicast equipment; Switching Module 2 to interchange mode piece 5 links to each other with Switching Module 1 respectively; Switching Module 1 thinks that Switching Module 2, Switching Module 3, Switching Module 4, the Switching Module 5 of cascade in its lower section are its users.
User 1, user 2 link to each other with Switching Module 2; User 3 links to each other with Switching Module 3; User 4 links to each other with Switching Module 4; User 5, user 6 link to each other with Switching Module 5.
Multicast server links to each other with multicast equipment by network interface.
Multicast server is according to the multi-cast message data application situation of user 1 to user 6, corresponding multicast data message is sent to multicast equipment, the multicast data message that multicast equipment sends by network interface receiving group server, and it is left in the shared buffer of Switching Module 1, and it is left in the buffering area of Switching Module 1.If during the multicast data message that user 1 and user 4 need to deposit in the shared buffer of Switching Module 1, Switching Module 1 duplicates and sends to Switching Module 2 and Switching Module 4 with the corresponding multicast data message of depositing in its shared buffer; Switching Module 2 and Switching Module 4 receives the multicast data message that Switching Modules 1 send, and it is left in separately the shared buffer; Switching Module 2 sends to user 1 with the multicast data message that it leaves in the shared buffer then; Switching Module 4 sends to user 4 with the multicast data message that it leaves in the shared buffer.Thereby finish the transmission of multicast data message.
Prior art realize having much if be connected the user of Switching Module 2 in the multicast transmission mode 2 based on ethernet switching module, and during a lot of multicast data message of these user applies, very high for the requirement of the data transfer bandwidth between the Switching Module.Each multicast data message takies a bandwidth.Multicast data message is many more, and the bandwidth that takies between the Switching Module 2 of Switching Module 1 and its cascade is just many more, under the certain situation of bandwidth, Switching Module and and the Switching Module of its cascade between have the transmission bottleneck problem; And when transmission multi-case data message, Switching Module 1 need duplicate the lot of data message, has reduced the disposal ability of Switching Module, thereby makes the transmission performance of network limited.Repeat simultaneously to transmit the data message of identical content in the network and wasted Internet resources.
In addition, Switching Module 1 copies to its each multicast data message that leaves in the shared buffer accordingly and the Switching Module of its cascade according to the request of the request transmission multi-case data message of user terminal.This disposal ability for Switching Module requires very high.
Because the requirement of bandwidth and Switching Module disposal ability makes communication apparatus support user's number limited, if still need to guarantee to support the user of equal number, then the communication apparatus cost will significantly rise, and make network equipment cost too high.
Summary of the invention
The objective of the invention is to, a kind of method and system of realizing data message transmission is provided, when being implemented in the user who supports equal number, reduce the purpose of network equipment cost.
For achieving the above object, the method for realization data message transmission provided by the invention comprises:
Transmitting terminal in a, the network equipment is sent to transfer bus after data message to be sent in the network is converted to cell;
Each receiving terminal that is connected on the described transfer bus in b, the described network equipment receives described cell, and according to described cell loaded information it is reduced to data message.
This data message to be sent comprises unicast data message, multicast data message and broadcasting data messages
Described method also comprises when described cell is ATM cell:
Set up the corresponding relation of medium access address and virtual path identifier, Virtual channe identifiers;
Set up the corresponding relation of virtual path identifier, Virtual channe identifiers and source identity;
Described source identity is indicated the transmission means of described data message;
And described step a comprises: aa, described transmitting terminal determine the source identity of described data message correspondence to be sent according to virtual path identifier, the Virtual channe identifiers of the source Media Access Control address correspondence of described data message to be sent, and described cell and described definite source identity are sent to transfer bus.
Described source identity comprises unicast cell sign, multicast cell sign and broadcasting source identity.
At the unicast data message, this source identity also comprises the characteristic information of the destination of unicast cell.
At multicast data message, described source identity also comprises the multicast group number.
When described transmitting terminal is a network side, when receiving terminal was one group of user side, described step aa comprised:
A1, network side convert described data message to the cell with corresponding virtual path identifier and Virtual channe identifiers according to the Media Access Control address of data message to be sent in the network;
A2, the source identity of determining described cell correspondence according to the virtual path identifier and the Virtual channe identifiers of described cell;
A3, described cell and source identity are sent by the dedicated channel of source identity correspondence together.
Described step a3 also comprises: described network side determines to allow the cell and the source identity of transmission according to pre-defined algorithm and given cell priority.
Described step b comprises:
Each user side receives described cell and judges the user terminal of the described cell of needs according to the demand of the source identity of this cell and user terminal;
If the source identity of described cell is the unicast cell sign, determine the user side that conforms to the destination characteristic information of the cell of described reception, determine that according to the destination characteristic information of described cell needs receive the user terminal of described cell by this user side, and described cell is reduced to the unicast data message transmissions to relevant user terminals;
If the source identity of described cell is the multicast cell sign, each user's example determines that according to the user terminal requests data message information of record needs receive the user terminal of described cell, and described cell is reduced to multicast data message transfers to relevant user terminals;
If the source identity of described cell is the broadcasting source identity, each user side is reduced to broadcasting data messages with described cell and transfers to connected each user terminal.
When described transmitting terminal is one group of user side, described step a comprised when receiving terminal was network side:
The request msg message that each user side comes the user terminal transmission is converted to cell and itself and unicast cell sign is transferred to network side by the corresponding dedicated channel of unicast cell sign together, simultaneously when request msg message loaded information sends multicast data message for request, record request information.
The present invention also provides a kind of realization data message system for transmitting, comprising:
User side interface equipment, be arranged in the network equipment, be used for that the request msg message that user terminal transmission comes is converted to cell and the unicast cell sign transfers to the network side interface equipment by transfer bus together, receiving described network side interface equipment transmits next cell and according to the source identity of described cell and the demand of user terminal cell is reduced to data message by transfer bus, and send to relevant user terminals, described source identity comprises unicast cell sign, the transmission means of described source identity designation data message;
The network side interface equipment, be arranged in consolidated network equipment with described user side interface equipment, be used to receive the cell that described user side interface equipment comes by the transfer bus transmission, and transfer to IP network after it is reduced to the request msg message, the multi-case data message that described IP network is sent or the unicast data message is converted to cell and its corresponding source identity transfers to each user side interface equipment by transfer bus together.
Described each user side interface equipment comprises respectively:
User device interface unit: transfer to the transfer bus interface unit after being used for converting the request msg message that user terminal transmission comes to cell, and the cell that the transmission of transfer bus interface unit comes is reduced to multicast or broadcasting data messages or unicast data message sends to relevant user terminals;
The transfer bus interface unit is used for cell that described user device interface unit transmission is come and the source identity of this cell correspondence transfers to the network side interface equipment by transfer bus together, receives the cell on the described transfer bus and transmits it to described user device interface unit according to source identity and user's request.
Described user device interface unit comprises:
User terminal access unit: be used for converting the request msg message that described user terminal transmission comes to cell, and it is carried on sends to the cell load bearing unit in the predetermined frame, the cell in the predetermined frame of being carried on that the transmission of cell load bearing unit is come is reduced to multi-case data message or unicast data message transmissions to user terminal;
The cell load bearing unit is used for the cell that is carried on predetermined frame that user terminal access unit transmission comes is transferred to described transfer bus interface unit, and the cell that is carried in the predetermined frame that described transfer bus interface unit transmission comes is transferred to the relevant user terminals access unit according to the VPI and the VCI of described cell.
Described cell load bearing unit is the asymmetric digital subscriber line chip, or the Very-high-speed Digital Subscriber Line chip, or the high bitrate digital subscriber line nest plate.
Described network side interface equipment comprises:
Data message processing unit: be used for transferring to transfer bus interface unit together with its corresponding source identity after multi-case data message that the IP network transmission is next or unicast data message convert cell to, and the cell that described transfer bus interface unit transmission with arbitration function is come is reduced to the request msg message transmissions to IP network with arbitration function;
Transfer bus interface unit with arbitration function: be used for determining that described data message processing unit transmits the source identity of the cell correspondence of coming, and determine to allow cell and source identity to transfer to transfer bus according to pre-defined algorithm and priority, receive the cell on the transfer bus, and determine that according to the source identity of the cell of described reception needs transfer to the cell of described data message processing unit and transmit it to described data message processing unit.
Described network side interface equipment also comprises:
Interface conversion unit: be used to connect described network side interface equipment and described IP network.
Described interface conversion unit is Fast Ethernet light mouth or FE electricity mouth or G bit Ethernet light mouth.
Utilize the present invention, by user side with the request msg message transmissions of user terminal to network side, and the relevant information of record request multicast data message, network side is with unicast data message waiting for transmission in the network, the multi-case data message transfers to transfer bus after being converted into cell, each user side that is connected with transfer bus receives the cell on transfer bus and determines cell is transferred to relevant user terminals according to the demand of source identity and user terminal, when a plurality of user sides need described cell, do not need cell is repeatedly duplicated, can transfer to corresponding user side, make the transmission of multi-case data message not have the transmission bottleneck problem, advantages of simplicity and high efficiency has realized the transmission of multi-case data message, Internet resources have been saved, improved the transmission performance of network communication apparatus, thereby realized that communication apparatus when supporting the user of equal number, reduces the purpose of communication apparatus cost.
Description of drawings
Fig. 1 utilizes Switching Module to realize the method for multi-case data message transmissions in the prior art;
Fig. 2 utilizes the Switching Module cascade to realize the method for multi-case data message transmissions in the prior art;
Fig. 3 is first kind of the present invention and realizes the data message system for transmitting;
Fig. 4 is second kind of the present invention and realizes the data message system for transmitting;
Fig. 5 is that of the present invention the third realized the data message system for transmitting;
Fig. 6 is of the present invention based on DSLAM realization data message system for transmitting;
Fig. 7 is the protocol processes schematic diagram of Fig. 6.
Embodiment
Core concept of the present invention is: transmitting terminal sends unicast data message to be sent in the network, multi-case data message after being converted to cell; Receiving terminal receives described cell and according to this cell loaded information it is reduced to data message.
Based on core concept of the present invention, can realize the message transmission between the network side and user side in the network.As network side unicast data message, the multi-case data message that webserver transmission comes sent after being converted to cell; Each user side receives described cell and transmits it to relevant user terminals according to described cell loaded information; After being converted to cell, the request msg message that user side comes the user terminal transmission sends; Network side receives described cell and is converted into the request msg message transmissions to the corresponding webserver according to described cell loaded information.
The present invention can adopt the transmission that realizes data message based on ATM (asynchronous transfer mode) cell.ATM is a kind of high speed, the low multiplexed switching technology that postpones, because ATM adopts cell, provides limited technology such as error detection occurs operation to make network have enough fast speed to support multi-megabit transmission rate.Utilize the transmission characteristic of ATM cell, by being converted to cell, multi-case data message, unicast data message receive transmission by transfer bus, each user side and network side are reduced to cell the destination address that data message transfers to data message again, finish the transmission of the data message between network side and the user side.
The multi-case data message does not need repeatedly to duplicate can carry out the transmission of data message between network side and user side like this.Thereby advantages of simplicity and high efficiency realizes the transmission of data message.
In the specific embodiment of the present invention, transfer bus adopts the bus based on ATM transfer bus standard.Article one, can support 32 transfer bus interface units simultaneously at most based on the bus of ATM transfer bus standard, be 32 with a user side and a network side sum that is connected based on the bus of ATM transfer bus standard promptly.It can provide 1Gbps above shared exchange capacity at most.
The characteristics of transfer bus are to use a bus can finish the exchange of ATM cell between the transfer bus interface unit of different veneers.The user side that is connected with transfer bus can have a plurality of, because the inside of the transfer bus interface unit of each user side that is connected with transfer bus and network side provides tertiary road by searching the more rich cell scheduling mechanism of geometric ratio, thereby the ATM cell on the transfer bus can be implemented in the exchange between the transfer bus interface unit of each user side and network side.
The present invention realizes that the concrete grammar of data message transmission is:
Set up corresponding permanent virtual connection, the corresponding permanent virtual connection of broadcasting source identity of network side permanent virtual connection, the multicast cell sign corresponding at first, respectively with the unicast cell sign between each user side.
Set up the corresponding relation of MAC (medium access control) address and VPI (virtual path identifier), VCI (Virtual channe identifiers),
Set up the corresponding relation of VPI and VCI and source identity.
When user side received the request msg message of user terminal transmission, user side converted the request msg message to cell; The user terminal requests IP network has unicast data message, multicast data message, broadcasting data messages to the kind of the data message of its transmission.If user terminal needs IP network when the data message of its transmission is multicast data message, need the relevant information of record request data message.The relevant information of request msg message comprises the address information of user terminal and the multicast group number of the multicast data message that request sends.The relevant information of request msg message can be recorded in user side, also can be recorded in network side.
User side increases the characteristic information of unicast cell sign, destination according to the VPI and the VCI of conversion back cell for it, and the characteristic information of cell and unicast cell sign, destination is sent to transfer bus by unicast cell sign correspondence together permanent virtual the connection.
The characteristic information of destination comprises port numbers and slot number.
The all of the port that is connected with transfer bus all receives the cell on the transfer bus, and judges whether cell reduction and transmission according to the characteristic information of source identity and destination.
Because the source identity after the conversion of request msg message is the unicast cell sign, and the characteristic information of the destination of cell is the characteristic information of network side, and the target MAC (Media Access Control) address according to the request msg message sends it to IP network behind the request msg message so network side is reduced to the cell that receives.Because the characteristic information of the characteristic information of each user side and the destination of cell is different, so each user side abandons the cell that receives.
Network side is converted to cell according to the Media Access Control address of the data message to be sent that IP network transmission comes with data message, and is that cell increases corresponding source identity according to the VPI and the VCI of cell.
If data message to be sent is the unicast data message, network side is the characteristic information that cell increases the destination of unicast cell sign, target MAC (Media Access Control) address correspondence according to the source MAC of unicast data message, and with the characteristic information of cell, destination and unicast cell sign together by the unicast cell sign corresponding permanent virtual the connection be sent to transfer bus.
If data message to be sent is a multicast data message, network side is the multicast group number that cell increases multicast cell sign and multicast data message according to the source MAC of multicast data message; And with cell, multicast cell sign and multicast group number together by the multicast cell sign corresponding permanent virtual the connection be sent to transfer bus.
If data message to be sent is a broadcasting data messages, network side is that cell increases the broadcasting source identity according to the source MAC of broadcasting data messages, and cell and broadcasting source identity are sent to transfer bus by what broadcast the source identity correspondence together permanent virtual the connection.
When network side data message to be sent has when a plurality of, network side can determine to allow the cell that sends according to pre-defined algorithm and predetermined priority.The priority that we can set the cell with multicast cell sign is higher than the cell with unicast cell sign and has the priority of the cell of broadcasting source identity.
Each user side that is connected with transfer bus receives the cell on the transfer bus, and determines cell is transferred to corresponding user terminal according to the demand of source identity and user terminal.
If the source identity that user side receives is the unicast cell sign, each user side determines that according to the characteristic information of the destination of cell needs transfer to corresponding user terminal with the cell that receives, and the cell that receives is reduced to the unicast data message transmissions to relevant user terminals; When cell that all users that are connected with user side do not need to receive, user side abandons the cell that receives.
If the source identity that user side receives is the multicast cell sign, each user side determines that according to the solicited message of record needs receive the user terminal of described cell, and described cell is reduced to multicast data message transfers to relevant user terminals; When cell that all users that are connected with user side do not need to receive, user side abandons the cell that receives.
If the source identity that user side receives is the broadcasting source identity, each user side is reduced to broadcasting data messages with described cell and transfers to connected each user terminal.
Realize that below in conjunction with first kind of 3 couples of the present invention of accompanying drawing the data message system for transmitting is described in further detail.
The transfer bus interface unit is drawn the transfer bus interface in the backboard side, links to each other with transfer bus by the transfer bus interface of drawing; On the veneer of transfer bus interface unit, draw UTOPIA (Universal Test ﹠ Operations PHY Interface for ATM), link to each other with the user device interface unit by UTOPIA.
Different working modes by configuration transfer bus interface unit can connect various network device interface unit or user device interface unit flexibly by UTOPIA on the transfer bus interface unit, make network side and user side finish the transmitting-receiving of ATM cell.
Can articulate a plurality of transfer bus interface units on the transfer bus, each interface device all has a unique ID (sign), and this sign can be the port address of each interface device.The transfer bus interface unit has arbitration function, can be by pre-defined algorithm and the definite cell that need send on the transfer bus of priority.The transfer bus interface unit of user side is connected with the user device interface unit, and the transfer bus interface unit of network side is connected with the network device interface unit.There is a plurality of grooves position the user device interface unit, and there is a slot number each groove position, and each slot number again can corresponding a plurality of user terminals.
In Fig. 3, articulated three transfer bus interface units 300,310 and 320 on the transfer bus, they link to each other with 350 with network device interface unit 330, user device interface unit 340 respectively.
The network side interface equipment is formed in transfer bus interface unit 300 and network device interface unit 330.
User side interface equipment is formed in transfer bus interface unit 310 and user device interface unit 340; User side interface equipment is formed in transfer bus interface unit 320 and user device interface unit 350.
When network device interface unit 330 receives unicast data message waiting for transmission, the unicast data message is converted to the dedicated channel by unicast cell transfers to transfer bus interface unit 300 behind the cell, transfer bus interface unit 300 is defined as veneer port numbers and the slot number that described cell increases the destination of unicast cell sign and unicast cell according to the VCI of cell and VPI, with the veneer port numbers of the destination of cell and unicast cell sign and unicast cell, slot number being sent on the transfer bus permanent virtual connection the by unicast cell sign correspondence together.Each transfer bus interface unit 310 that links to each other with transfer bus and 320 all receives simultaneously, transfer bus interface unit 310 and 320 determines that according to the unicast cell sign of the cell that receives cell is a unicast cell, transfer bus interface unit 310 judges whether identical with the port address of oneself according to the port numbers of the destination of cell with 320 again, if it is identical, transfer bus interface unit 310 or 320 slot numbers according to cell transfer to user device interface unit 340 or 350 corresponding groove positions, user device interface unit 340 or 350 is the cell restoring data message that receives, and the data message after will reducing according to the VPI of the cell that receives and VCI again sends to relevant user terminals equipment; If the port numbers of the destination of cell is inequality with the port address of oneself, then transfer bus interface unit 310,320 is abandoned the cell that receives.So just realized that unicast cell is in the transmission between each transfer bus interface unit on the transfer bus.
When network device interface unit 330 receives multicast data message waiting for transmission, multicast data message is converted to the dedicated channel by multicast cell transfers to and transfer bus interface unit 300 behind the cell, transfer bus interface unit 300 is defined as the group number that described cell increases multicast cell sign and multicast according to the VCI and the VPI of cell.Group number corresponding being sent on the transfer bus permanent virtual connection of multicast cell sign together with cell and multicast cell sign and multicast.Each transfer bus interface unit 310 that links to each other with transfer bus and 320 all receives simultaneously, transfer bus interface unit 310 and 320 determines that according to the multicast cell sign of the cell that receives cell is a multicast cell, ask the group number of the multicast of the solicited message of multicast data message and cell to judge the whether cell of this multicast group number of needs of connected user terminal according to the user of record again, if the user terminal that is connected with transfer bus interface unit 310 needs this cell, transfer bus interface unit 310 transmits it to corresponding user device interface unit 340, with the cell restoring data message that receives, the data message after will reducing according to the VPI of the cell that receives and VCI again transfers to relevant user terminals by user device interface unit 340; If the user terminal that is connected with transfer bus interface unit 320 does not need this cell, transfer bus interface unit 320 is abandoned this multicast cell.So just realized that multicast cell is in the transmission between each transfer bus interface unit on the transfer bus.
When network device interface unit 330 receives broadcasting data messages waiting for transmission, broadcasting data messages is converted to the dedicated channel by the broadcasting cell transfers to transfer bus interface unit 300 behind the cell, transfer bus interface unit 300 is defined as described cell according to the VCI of cell and VPI increases the broadcasting source identity.Transfer bus interface unit 300 is with cell and broadcasting source identity being sent on the transfer bus permanent virtual connection the by broadcasting source identity correspondence together.Each transfer bus interface unit 310 that links to each other with transfer bus and 320 all receives simultaneously, transfer bus interface unit 310 and 320 determines that according to the broadcasting source identity of the cell that receives cell is the broadcasting cell, transfer bus interface unit 310 transfers to user device interface unit 340 with this broadcasting cell, transfer bus interface unit 320 transfers to user device interface unit 350 with this broadcasting cell, to broadcast cell by user device interface unit 340 and 350 and be reduced to data message, and the data message after will reducing transfers to connected all subscriber terminal equipments.So just realized that the broadcasting cell is in the transmission between each transfer bus interface unit on the transfer bus.
The transfer bus interface unit 300,310,320 that links to each other with transfer bus all has arbitration function, can be by being provided with, the arbitration function of the transfer bus interface unit 300 that links to each other with the network device interface unit is opened, and transfer bus interface unit 310 that links to each other with the user device interface unit and 320 arbitration function are closed.When the transfer bus interface unit 300 that links to each other with the network side interface equipment has the cell of a plurality of needs transmissions, can determine to allow the cell of transmission by pre-defined algorithm and preset priority.Data congestion can not take place like this in the transmission course of cell.
Realize the data message system for transmitting as shown in Figure 4 for second kind provided by the invention.
In Fig. 4, realization data message system for transmitting of the present invention comprises: network side interface equipment 400, user side interface equipment 410.Can articulate a plurality of user side interface equipment simultaneously on the transfer bus.
Network side interface equipment 400 comprises: transfer bus interface unit 401, data message processing unit 402, interface conversion unit 403.
User side interface equipment 410 comprises: transfer bus interface unit 411, cell load bearing unit 412, user terminal access unit 413.Transfer bus interface unit 411 can be connected with a plurality of cell load bearing units simultaneously.Cell load bearing unit 412 also can be connected with a plurality of user terminal access units respectively.
The transfer bus interface unit of transfer bus interface unit 401 for having arbitration function, be used for determining that described data message processing unit 402 transmits the source identity of the cell correspondence of coming, and determine to allow cell and source identity to transfer to transfer bus according to pre-defined algorithm and priority, receive cell and source identity on the transfer bus, and determine that according to source identity needs transfer to the cell of described data message processing unit 402 and transmit it to described data message processing unit 402.
Data message processing unit 402: be used for the multi-case data message that IP network is come by interface conversion unit 403 transmission or the unicast data message converts to behind the cell and its corresponding source identity transfers to the transfer bus interface unit 401 with arbitration function together, and the next cell of transfer bus interface unit 401 transmission that will describedly have an arbitration function is reduced to the request msg message and transfers to IP network by interface conversion unit 403.
Interface conversion unit 403: the interface that provides the network side interface equipment to link to each other with IP network is provided.
Transfer bus interface unit 411: be used for cell and its corresponding source identity that cell load bearing unit 412 transmission comes are transferred to transfer bus together, receive the cell on the described transfer bus and transmit it to corresponding cell load bearing unit 412 according to source identity and user's request.
Cell load bearing unit 412: be used for the cell that user terminal access unit 413 transmission comes is transferred to transfer bus interface unit 411, and the cell that 411 transmission of transfer bus interface unit come be carried on VPI and the VCI according to cell transfers to relevant user terminals access unit 413 in the predetermined frame.
User terminal access unit 413: be used for converting the request msg message that the user terminal transmission comes to cell, and the cell after will changing is carried on and sends to cell load bearing unit 412 in the predetermined frame, and the cell that is carried in the predetermined frame that 412 transmission of cell load bearing unit are come is reduced to multicast data message or broadcasting data messages or unicast data message transmissions to user terminal.
Provided by the invention the third realized the data message system for transmitting as shown in Figure 5.
In Fig. 5, articulated three transfer bus interface units 500,510 and 520 on the transfer bus, they link to each other with 550 with user device interface unit 530,540 respectively; Transfer bus interface unit 500 and data message processing unit 530 are formed the network side interface equipment; User side interface equipment is formed in transfer bus interface unit 510 and user device interface unit 540; User side interface equipment is formed in transfer bus interface unit 520 and user device interface unit 550.
Transfer bus interface unit 500 is the transfer bus interface unit with arbitration function of network side, and transfer bus interface unit 510 and transfer bus interface unit 520 are the transfer bus interface unit of user side.
Data message processing unit 530 is the network device interface unit of network side, and user device interface unit 540 and user device interface unit 550 are for being respectively the user device interface unit of user side.
Set up permanent virtual connection of user side interface equipment and network side interface equipment, this permanent virtual connection comprises the permanent virtual connection that the corresponding permanent virtual connection of unicast cell sign, multicast cell sign are corresponding and permanent virtual connection of broadcasting source identity correspondence.
Set up the corresponding relation of VPI, VCI and source identity.
Source identity comprises unicast cell sign, multicast cell sign and broadcasting source identity.
Setting user terminal 541 needs IP network 560 to send datagram to it.
To user device interface unit 540, user device interface unit 540 transfers to transfer bus interface unit 510 by the corresponding permanent virtual connection of unicast cell sign after the request msg message is converted to cell to user terminal 541 with the request msg message transmissions.
Transfer bus interface unit 510 identifies and the port numbers of transfer bus interface unit 500 and slot number of data message processing unit 530 for it increases unicast cell after receiving the cell that 540 transmission of user device interface unit come, and cell and unicast cell sign and port numbers, slot number are sent to transfer bus together.IP network 560 sends multicast data message to it if the cell loaded information that receives is request, also needs the record request IP network to send the solicited message of multicast data message; Solicited message comprises the multicast group number of multicast data message of request and the address information of user terminal.The solicited message of request multicast data message can be recorded in any composition device of realizing the data message system for transmitting.
Each the transfer bus interface unit that links to each other with transfer bus receives the cell on the transfer bus simultaneously, and transfer bus interface unit 500 receives behind the described cell according to source identity judges that the cell that receives is unicast cell, multicast cell, or broadcasting cell.If source identity is the unicast cell sign, determine the cell that oneself should receive according to port numbers again, transfer to data message processing unit 520 according to slot number by the corresponding permanent virtual connection of unicast cell sign; Port numbers and the own port numbers of other transfer bus interface units 520 by judging cell is inconsistent and the cell of reception is abandoned.
Data message processing unit 520 is reduced to the request msg message with it, and transmits it to IP network 560 according to the Media Access Control address of request msg message after receiving the next unicast cell of transfer bus interface unit 500 transmission.
Data message processing unit 530 receives the data message that IP network 560 transmission come.
The data message that IP network 560 transmission come comprises unicast data message, multicast data message and broadcasting data messages.
Because broadcasting data messages, multicast data message are different with the MAC Address of unicast data message, so the MAC Address of the data message that data message processing unit 530 can receive by judgement is carried out the kind of recognition data message.
If IP network 560 needs to send broadcasting data messages, broadcasting data messages is transferred to data message processing unit 530.
Data message processing unit 530 is converted into corresponding cell according to the MAC Address of the data message that receives, if data message is the unicast data message then cell is transferred to transfer bus interface unit 500 by the corresponding permanent virtual connection of unicast cell sign; If data message is a multicast data message, then transfer to transfer bus interface unit 500 by the corresponding permanent virtual connection of multicast cell sign; If data message is a broadcasting data messages, then the permanent virtual connection by broadcasting source identity correspondence transfers to transfer bus interface unit 500.
Transfer bus interface unit 500 receives the cell that data message processing unit 530 comes from the corresponding permanent virtual connection transmission of unicast cell sign, be its port numbers and slot number that increases unicast cell sign and determine the destination that it is corresponding according to the VPI and the VCI of cell, if this unicast data message is the unicast data message that user terminal 541 IP network of asking sends, for cell increases the port numbers of transfer bus interface unit 510 and the slot number of user device interface unit 540; And cell and unicast cell sign and port numbers, slot number sent to transfer bus together.
Transfer bus interface unit 500 receives the cell that data message processing unit 530 comes from the corresponding permanent virtual connection transmission of multicast cell sign, for it increases the group number of multicast cell sign and multicast; And the group number of cell and multicast cell sign and multicast sent to transfer bus together.
Transfer bus interface unit 500 receives the permanent virtual connection transmission next cell of data message processing unit 530 from broadcasting source identity correspondence, is that it increases the broadcasting source identity; And with cell and broadcasting source identity send to transfer bus together.
Transfer bus interface unit 500 is the transfer bus interface units with arbitration function, when the cell after a plurality of data message conversions need send, transfer bus interface unit 500 can be determined the cell that permission sends according to predetermined algorithm and preset priority.
Each transfer bus interface unit 510 and 520 all receives the cell on the transfer bus.
Transfer bus interface unit 510 judges that according to source identity the cell that receives is unicast cell, multicast cell or broadcasting cell after receiving cell on the transfer bus.
If the source identity of the cell that transfer bus interface unit 510 receives is the unicast cell sign, determine whether identical according to the port numbers of cell again with the port numbers of oneself, if it is identical, transmit it to corresponding groove position in the user device interface unit 540 according to slot number by the corresponding permanent virtual connection of unicast cell sign, user device interface unit 540 is reduced to the unicast data message with the cell that transfer bus interface unit 510 transmission comes, according to the target MAC (Media Access Control) address of unicast data message with the unicast data message transmissions to user terminal 541.If inequality, the cell that receives is abandoned.Transfer bus interface unit 520 is also handled the cell that receives according to said method.
If the source identity of the cell that transfer bus interface unit 510 receives is the multicast cell sign, solicited message according to the request multicast data message that writes down, cell is transferred to the respective grooves position of user device interface unit 540, user device interface unit 540 is reduced to multicast data message with the cell that 510 transmission of transfer bus interface unit come, and according to the solicited message of record cell is transferred to corresponding user.Other transfer bus interface units 520 transfer to corresponding user by the solicited message of the request multicast data message of record with the cell that receives.
If the source identity of the cell that transfer bus interface unit 510 receives is the broadcasting source identity, cell is transferred to each groove position of user device interface unit 540, user device interface unit 540 is reduced to broadcasting data messages with the cell that 510 transmission of transfer bus interface unit come, and transfers to connected all user terminals.Transfer bus interface unit 520 also will transfer to connected all user terminals from the cell that transfer bus receives according to said method.
Provided by the inventionly realize that based on DSLAM (Digital Subscriber Line access and multiplexing device) data message system for transmitting of the present invention as shown in Figure 6.
DSLAM mainly is made up of two kinds of business boards, network interface board and user board.The network interface board significant feature is for DSLAM provides the network side interface, and DSLAM equipment is communicated with IP network, is the network side interface equipment among the DSLAM.The user board significant feature is for DSLAM provides user side interface, and DSLAM equipment is communicated with the user terminal access unit, forms user side interface equipment among the DSLAM with the user terminal access unit.
Carry out data communication by DSLAM between IP network and the user terminal, the processing procedure of its agreement as shown in Figure 7:
In Fig. 7, user terminal sends datagram to IP network and is up direction, and the protocol processes method of up direction is:
1) data message of the IP network of user terminal transmission is handled by the protocol stack of computer, is packaged into ethernet frame, issues CPE (user terminal access unit) then.
2) CPE receives after the ethernet frame, according to the 1483B/AAL5 agreement, the data message of IP network is divided into the ATM cell of standard, ATM cell is carried in the ADSL frame issues user board then.
3) user board recovers out with ATM cell from the ADSL frame, sends to network interface board by transfer bus.
4) network interface board is formed ethernet frame with the ATM cell that receives, and is sent it to IP network according to the 1483B/AAL5 agreement.
IP network is a down direction to the user terminal to transmit data message, and the protocol processes method of down direction is opposite with up direction.
In Fig. 6, the network interface board 600 among the DSLAM comprises transfer bus interface unit 601, data message processing unit 602 and LANSWITCH chip 603; Network interface board 600 is a network side interface equipment of the present invention; Data message processing unit 602 and LANSWITCH chip 503 are formed network device interface of the present invention unit.
Transfer bus interface unit 601 is the transfer bus interface unit with arbitration function of network side.
Set up permanent virtual connection of each CPE and network interface board 600, this permanent virtual connection comprises the permanent virtual connection that the corresponding permanent virtual connection of unicast cell sign, multicast cell sign are corresponding and permanent virtual connection of broadcasting source identity correspondence.
Set up the corresponding relation of VPI, VCI and source identity.
Source identity comprises unicast cell sign, multicast cell sign and broadcasting source identity.
Setting user 631 needs IP network 620 to send datagram to it.
To CPE630, CPE630 is converted to cell with the request msg message to user terminal 631 with the request msg message transmissions, and it is carried in the ADSL frame by the corresponding permanent virtual connection of unicast cell sign transfers to ADSL chip 612; The cell that is carried in the ADSL frame that ADSL chip 612 will receive transfers to transfer bus interface unit 611 by the corresponding permanent virtual connection of unicast cell sign.IP network 620 sends multicast data message to it if the request msg message is request, and DSLAM needs record request to send the solicited message of multicast data message.Solicited message comprises the multicast group number of multicast data message of request and the address information of subscriber equipment.The solicited message of request multicast data message can be recorded in any composition device of DSLAM.
Each the transfer bus interface unit that links to each other with transfer bus receives the cell on the transfer bus simultaneously, transfer bus interface unit 601 determines that according to the unicast cell sign cell is a unicast cell after receiving described cell, determine the cell that the port should receive according to port numbers again, transfer to data message processing unit 602 by the corresponding permanent virtual connection of unicast cell sign according to slot number; Port numbers and the own port numbers of the transfer bus interface unit that other link to each other with transfer bus by judging cell is inconsistent and the cell of reception is abandoned.
After data message processing unit 602 receives the next unicast cell of transfer bus interface unit 601 transmission, it is reduced to the request msg message, and transmits it to IP network 620 by LANSWITCH chip 603 according to the Media Access Control address of request msg message.
The data message that IP network 620 sends transfers to data message processing unit 602 by LANSWITCH chip 603.
The data message that IP network 620 transmission come comprises unicast data message, multicast data message and broadcasting data messages.
Because broadcasting data messages, multicast data message are different with the MAC Address of unicast data message, so the MAC Address of the data message that data message processing unit 602 can receive by judgement is carried out the kind of recognition data message.
If IP network 620 needs to send broadcasting data messages, broadcasting data messages is transferred to data message processing unit 602 by LANSWITCH chip 603.
Data message processing unit 602 is converted into cell according to the MAC Address of the data message that receives, if data message is the unicast data message then cell is transferred to transfer bus interface unit 601 by the corresponding permanent virtual connection of unicast cell sign; If data message is a multicast data message, then transfer to transfer bus interface unit 601 by the corresponding permanent virtual connection of multicast cell sign; If data message is a broadcasting data messages, then the permanent virtual connection by broadcasting source identity correspondence transfers to transfer bus interface unit 601.
Transfer bus interface unit 601 increases the unicast cell sign and determines its corresponding port number and slot number according to the VPI of cell and VCI for the cell that comes from the corresponding permanent virtual connection transmission of unicast cell sign, is port numbers and the slot number that cell increases transfer bus interface unit 611; And cell and unicast cell sign and port numbers, slot number sent to transfer bus by permanent virtual connection of unicast cell correspondence together.
Transfer bus interface unit 611 is the group number that increases multicast cell sign and multicast from the cell that the corresponding permanent virtual connection transmission of multicast cell sign comes; And with the group number of cell and multicast cell sign and multicast together by the multicast cell sign corresponding permanent virtual the connection send to transfer bus.
Transfer bus interface unit 611 is from the next cell increase broadcasting source identity of the permanent virtual connection transmission of broadcasting source identity correspondence; And cell and broadcasting source identity sent to transfer bus by broadcasting source identity correspondence together permanent virtual the connection.
The cell that transfer bus interface unit 611 receives on the transfer bus, other transfer bus interface units that are connected with transfer bus also receive simultaneously.
After transfer bus interface unit 611 receives described cell, judge that the cell that receives is unicast cell, multicast cell or broadcasting cell.
If transfer bus interface unit 611 determines that according to the unicast cell sign cell is a unicast cell, determine identical according to the port numbers of cell again with the port numbers of oneself, transmit it to ADSL chip 612 according to slot number by the corresponding permanent virtual connection of unicast cell sign, ADSL chip 612 is carried on it in ADSL frame and by the corresponding permanent virtual connection of unicast cell sign and transfers to CPE630.
CPE630 is reduced to the unicast data message with the cell in the ADSL frame that receives, according to the target MAC (Media Access Control) address of unicast data message with the unicast data message transmissions to user 631.Port numbers and the own port numbers of other transfer bus interface units that are connected with transfer bus by judging cell is inconsistent and the cell of reception is abandoned.
If transfer bus interface unit 611 determines that according to the multicast cell sign cell is a multicast cell, again according to the solicited message of request multicast data message of record, transmit it to ADSL chip 612 by the corresponding permanent virtual connection of multicast cell sign, ADSL chip 612 is carried on it in ADSL frame and by the corresponding permanent virtual connection of multicast cell sign and transfers to CPE630.CPE630 is reduced to multicast data message with the cell in the ADSL frame that receives, and according to the target MAC (Media Access Control) address of multicast data message multicast data message is transferred to user 631.If user 641 has also asked this multicast data message, transfer bus interface unit 611 is according to the solicited message of the request multicast data message of record, transmit it to ADSL chip 613 by the corresponding permanent virtual connection of multicast cell sign, ADSL chip 613 is carried on multicast data message in the ADSL frame and by the corresponding permanent virtual connection of multicast cell sign and transfers to CPE640.CPE640 is reduced to multicast data message with the cell in the ADSL frame that receives, and according to the target MAC (Media Access Control) address of multicast data message multicast data message is transferred to user 641.Other transfer bus interface units also transfer to corresponding user with same method with the cell that receives.
If transfer bus interface unit 611 determines that according to the broadcasting source identity cell is the broadcasting cell, permanent virtual connection by broadcasting source identity correspondence transmits it to ADSL chip 612 and 613, ADSL chip 612 is carried on broadcasting data messages in the ADSL frame with 613 and permanent virtual the connection transmits it to CPE630 by broadcasting source identity correspondence, 640,650.CPE630,640,650 are reduced to broadcasting data messages with the cell in the ADSL frame that receives, and respectively broadcasting data messages are transferred to user terminal 631,641,651 according to the target MAC (Media Access Control) address of broadcasting data messages.Other transfer bus interface units also transfer to corresponding user with same method with the cell that receives.
Though described the present invention by embodiment, those of ordinary skills know, the present invention has many distortion and variation and do not break away from spirit of the present invention, wishes that appended claim comprises these distortion and variation.
Claims (17)
1, a kind of method that realizes the data message transmission is characterized in that comprising:
Transmitting terminal in a, the network equipment is sent to transfer bus after data message to be sent in the network is converted to cell;
Each receiving terminal that is connected on the described transfer bus in b, the described network equipment receives described cell, and according to described cell loaded information described cell is reduced to data message.
2, a kind of method that realizes the data message transmission as claimed in claim 1 is characterized in that described data message to be sent comprises unicast data message, multicast data message and broadcasting data messages.
3, a kind of method that realizes the data message transmission as claimed in claim 1 or 2, it is characterized in that: when described cell was ATM cell, described method also comprised:
Set up the corresponding relation of Media Access Control address and virtual path identifier, Virtual channe identifiers;
Set up the corresponding relation of virtual path identifier, Virtual channe identifiers and source identity;
Described source identity is indicated the transmission means of described data message;
And described step a comprises:
Aa, described transmitting terminal determine the source identity of described data message correspondence to be sent according to virtual path identifier, the Virtual channe identifiers of the source Media Access Control address correspondence of described data message to be sent, and described cell and described definite source identity are sent to transfer bus.
4, a kind of method that realizes the data message transmission as claimed in claim 3 is characterized in that described source identity comprises unicast cell sign, multicast cell sign and broadcasting source identity.
5, a kind of method that realizes the data message transmission as claimed in claim 4 is characterized in that at the unicast data message, described source identity also comprises the characteristic information of the destination of unicast cell.
6, a kind of method that realizes the data message transmission as claimed in claim 4 is characterized in that at multicast data message described source identity also comprises the multicast group number.
7, a kind of method that realizes the data message transmission as claimed in claim 3 is characterized in that working as described transmitting terminal is network side, and when receiving terminal was one group of user side, described step aa comprised:
A1, network side convert described data message to the cell with corresponding virtual path identifier and Virtual channe identifiers according to the Media Access Control address of data message to be sent in the network;
A2, the source identity of determining described cell correspondence according to the virtual path identifier and the Virtual channe identifiers of described cell;
A3, described cell and source identity are sent by the dedicated channel of source identity correspondence together.
8, a kind of method that realizes the data message transmission as claimed in claim 7 is characterized in that described step a3 also comprises:
Described network side determines to allow the cell and the source identity of transmission according to pre-defined algorithm and given cell priority.
9, a kind of method that realizes the data message transmission as claimed in claim 7 is characterized in that described step b comprises:
Each user side receives described cell and judges the user terminal of the described cell of needs according to the demand of the source identity of this cell and user terminal;
If the source identity of described cell is the unicast cell sign, determine order with the cell of described reception: the user side that conforms to of end characteristic information, determine that according to the destination characteristic information of described cell needs receive the user terminal of described cell by this user side, and described cell is reduced to the unicast data message transmissions to relevant user terminals;
If the source identity of described cell is the multicast cell sign, each user side determines that according to the user terminal requests data message information of record needs receive the user terminal of described cell, and described cell is reduced to multicast data message transfers to relevant user terminals;
If the source identity of described cell is the broadcasting source identity, each user side is reduced to broadcasting data messages with described cell and transfers to connected each user terminal.
10, the described a kind of method that realizes the data message transmission of claim 3 is characterized in that working as described transmitting terminal is one group of user side, and described step a comprised when receiving terminal was network side:
The request msg message that each user side comes the user terminal transmission is converted to cell and itself and unicast cell sign is transferred to network side by the corresponding dedicated channel of unicast cell sign together, when request msg message loaded information is the request multicast data message, write down relevant solicited message simultaneously;
Described request information comprises the multicast group number of multicast data message of address information, the request of user terminal.
11, a kind of realization data message system for transmitting is characterized in that comprising:
User side interface equipment, be arranged in the network equipment, be used for that the request msg message that user terminal transmission comes is converted to cell and the unicast cell sign transfers to the network side interface equipment by transfer bus together, receiving described network side interface equipment transmits next cell and according to the source identity of described cell and the demand of user terminal cell is reduced to data message by transfer bus, and send to relevant user terminals, described source identity comprises the unicast cell sign, and described source identity is indicated the transmission means of described data message;
The network side interface equipment, be arranged in consolidated network equipment with described user side interface equipment, be used to receive the cell that described user side interface equipment comes by the transfer bus transmission, and transfer to IP network after it is reduced to the request msg message, the multi-case data message that described IP network is sent or the unicast data message is converted to cell and its corresponding source identity transfers to each user side interface equipment by transfer bus together.
12, a kind of realization data message system for transmitting as claimed in claim 11 is characterized in that described each user side interface equipment comprises respectively:
User device interface unit: transfer to the transfer bus interface unit after being used for converting the request msg message that user terminal transmission comes to cell, and the cell that the transmission of transfer bus interface unit comes is reduced to multicast or broadcasting data messages or unicast data message sends to relevant user terminals;
Transfer bus interface unit: be used for the cell that described user device interface unit transmission is come and the source identity of this cell correspondence and transfer to the network side interface equipment by transfer bus together, receive the cell on the described transfer bus and transmit it to described user device interface unit according to source identity and user's request.
13, a kind of realization data message system for transmitting as claimed in claim 12 is characterized in that described user device interface unit comprises:
User terminal access unit: be used for converting the request msg message that described user terminal transmission comes to cell, and it is carried on sends to the cell load bearing unit in the predetermined frame, the cell in the predetermined frame of being carried on that the transmission of cell load bearing unit is come is reduced to multi-case data message or unicast data message transmissions to user terminal;
Cell load bearing unit: be used for the cell that is carried on predetermined frame that user terminal access unit transmission comes is transferred to described transfer bus interface unit, and the cell that is carried in the predetermined frame that described transfer bus interface unit transmission comes is transferred to the relevant user terminals access unit according to the VPI and the VCI of described cell.
14, a kind of realization data message system for transmitting as claimed in claim 13 is characterized in that described cell load bearing unit is the asymmetric digital subscriber line chip, or the Very-high-speed Digital Subscriber Line chip, or the high bitrate digital subscriber line nest plate.
15, a kind of realization data message system for transmitting as claimed in claim 11 is characterized in that described network side interface equipment comprises:
Data message processing unit: be used for transferring to transfer bus interface unit together with its corresponding source identity after multi-case data message that the IP network transmission is next or unicast data message convert cell to, and the cell that described transfer bus interface unit transmission with arbitration function is come is reduced to the request msg message transmissions to IP network with arbitration function;
Transfer bus interface unit with arbitration function: be used for determining that described data message processing unit transmits the source identity of the cell correspondence of coming, and determine to allow cell and source identity to transfer to transfer bus according to pre-defined algorithm and priority, receive the cell on the transfer bus, and determine that according to the source identity of the cell of described reception needs transfer to the cell of described data message processing unit and transmit it to described data message processing unit.
16, as claim 11 or 15 described a kind of realization data message system for transmitting, it is characterized in that described network side interface equipment also comprises:
Interface conversion unit: be used to connect described network side interface equipment and described IP network.
17, a kind of realization data message system for transmitting as claimed in claim 16 is characterized in that described interface conversion unit is Fast Ethernet FE light mouth or FE electricity mouth or G bit Ethernet GE light mouth.
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| CNB031541461A CN100358319C (en) | 2003-08-12 | 2003-08-12 | Method and system for realizing data-message transmission |
| PCT/CN2004/000911 WO2005015837A1 (en) | 2003-08-07 | 2004-08-06 | A method and system for implementing the transmission of the data packet |
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| CNB031541461A CN100358319C (en) | 2003-08-12 | 2003-08-12 | Method and system for realizing data-message transmission |
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| CN101150490B (en) * | 2006-09-23 | 2011-11-16 | 华为技术有限公司 | A queue management method and system for unicast and multicast service data packet |
| CN102271081B (en) * | 2010-06-07 | 2013-11-06 | 杭州华三通信技术有限公司 | Data message transmission method and device |
| CN106412990B (en) * | 2015-07-29 | 2019-08-13 | 展讯通信（上海）有限公司 | Terminal protocol stack cell processing method and processing device |
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