CN100544314C - The method and the device of narrow band data stream multicast and/or broadcast transmitted in broadband networks - Google Patents
The method and the device of narrow band data stream multicast and/or broadcast transmitted in broadband networks Download PDFInfo
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- CN100544314C CN100544314C CNB200510011609XA CN200510011609A CN100544314C CN 100544314 C CN100544314 C CN 100544314C CN B200510011609X A CNB200510011609X A CN B200510011609XA CN 200510011609 A CN200510011609 A CN 200510011609A CN 100544314 C CN100544314 C CN 100544314C
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Abstract
The present invention relates to the method and the device thereof of a kind of narrow band data stream multicast and/or broadcast transmitted in broadband network, wherein, device comprises: bitstream data is gathered packetization module, in order to gathering the bitstream data of sending from information source, and bitstream data is done the packing of fixed-length data bag by the length of setting handle; Bitstream data message addressing module is in order to carry out message addressing and encapsulation to the bitstream data bag that forms; The bitstream data packet forwarding module duplicates packet in order to the addressing information according to the bitstream data heading, and multicast and/or broadcasting are transmitted then; The bitstream data message unpack the recovery module, in order to removing addressing at the bit stream receiving terminal, and bitstream data is sent to the stay of two nights to the bit stream packets.Method of the present invention and device be in the purpose that has realized in broadband network multicast and/or broadcast transmitted low speed arrowband bit stream, and saved transfer bandwidth and link circuit resource greatly, improved efficiency of transmission.
Description
Technical field
The present invention relates to method and device that a kind of narrow band data stream transmits in broadband network, particularly relate to the method and the device of a kind of low-rate bit stream in multicast and/or broadcast communication field multicast and/or broadcast transmitted in broadband network.
Background technology
Along with the high speed development of information technology, network is carrying out the revolution of a field width band, to adapt to professional more and more higher requirement to transmission bandwidth.But traditional narrow band service is along with the arrival of broadband technology revolution disappears immediately.So when carrying out broadband network planning, how to handle seamlessly transitting of traditional narrow band service well, become a problem of necessary consideration.
Business for the arrowband based on grouping or packet switch, present broadband network can both provide a kind of better solution, related protocol PIM of IP multicast etc. for example, this mode is more suitable to delay variation and the less demanding business of net synchronization capability for those, for those delay variation and net synchronization capability is required just to be difficult to meet the demands than higher business.
The bit strearm rate of traditional narrow band service often has only several kbps, as 2.4k, 4.8k etc., when a such bit stream from the signal source folk prescription to simultaneously when the stay of two nights of several directions sends, traditional solution is to set up permanent circuit or virtual circuit between the information source and the stay of two nights.The advantage of doing like this is that quality of service can be guaranteed, but shortcoming also is clearly, has wasted bandwidth resources, network operation work increase exactly.And along with the increase of the network bandwidth and the development of business, can not provide a network platform separately in order to solve traditional narrow band service, in order to make the level and smooth transition of traditional narrow band service, a kind of method must be proposed, this traditional business of multicast or broadcasting unidirectional transmission in the network in broadband based on the arrowband.
Existing patent documentation comprises: the patent No. is the United States Patent (USP) " High bandwidthbroadcast system having localized multicast access to broadcast content " (the broadband broadcast system that local multicast inserts) of US6266339.
The US6266339 U.S. Patent application has the following disadvantages: in this patent, be a kind of multicast that the general data message is carried out and/or the mode of broadcasting, be not suitable for the transmission to the data of the delay variation and this bit stream of having relatively high expectations synchronously.
Summary of the invention
Technical problem to be solved by this invention is to provide the method for a kind of narrow band data stream multicast and/or broadcast transmitted in broadband network and device thereof to be implemented in unidirectional multicast on the broadband network and/or broadcast transmitted to the delay variation and the arrowband Bitstream signal of having relatively high expectations synchronously.
To achieve these goals, the invention provides the device of a kind of narrow band data stream multicast and/or broadcast transmitted in broadband network, be used for by information source access node, data transmission nodal and stay of two nights access node in broadband network multicast and/or broadcast transmitted bitstream data based on the arrowband, wherein, comprising:
Bitstream data is gathered packetization module, in order to gathering the bitstream data of sending from information source, and described bitstream data is done the packing of fixed-length data bag by the length of setting handle;
Bitstream data message addressing module is in order to carry out message addressing and encapsulation to the bitstream data bag that forms;
The bitstream data packet forwarding module duplicates packet in order to the addressing information according to described bitstream data heading, and multicast and/or broadcasting are transmitted then;
The bitstream data message unpack the recovery module, in order to removing addressing at the bit stream receiving terminal, and described bitstream data is sent to the stay of two nights to described bitstream data bag;
Wherein, described bitstream data collection packetization module and bitstream data message addressing module are arranged on the described information source access node; Described bitstream data packet forwarding module is arranged on described information source access node, data transmission nodal and the stay of two nights access node; The recovery module that unpacks of described bitstream data message is arranged on the described stay of two nights access node; Any two interconnected nodes link to each other by a logical channel or virtual link in described information source access node, data transmission nodal and the stay of two nights access node.
The device of described narrow band data stream multicast and/or broadcast transmitted in broadband network, wherein, described message addressing information is formed according to the access interface of information source access node and/or definite network planning by described message addressing module.
The device of described narrow band data stream multicast and/or broadcast transmitted in broadband network, wherein, described message addressing information is used to indicate the information of described information source.
The present invention also provides the method for a kind of narrow band data stream multicast and/or broadcast transmitted in broadband network, be used for by information source access node, data transmission nodal and stay of two nights access node in broadband network multicast and/or broadcast transmitted bitstream data based on the arrowband, wherein, comprising:
Steps A is set up a logical channel or a virtual link between any two nodes in described information source access node, data transmission nodal or stay of two nights access node;
Step B gathers bitstream data on the access interface of described information source access node, and described data message grouping is broken into packet by the length of setting;
Step C after packing data, addresses and encapsulates the message after the packing;
Step D, described data transmission nodal duplicates described bitstream data message according to the bitstream data message addressing information that receives, and described data message is transmitted in multicast and/or broadcasting then;
Step e is removed the addressing to described bitstream data bag on the access node of the described stay of two nights, and described bitstream data is sent to the stay of two nights.
The method of described narrow band data stream multicast and/or broadcast transmitted in broadband network wherein, comes described data are addressed according to access interface and/or definite network planning of described information source access node; Described addressing information is used to indicate the information of described information source.
The method of described narrow band data stream multicast and/or broadcast transmitted in broadband network, wherein, described step D further comprises one according to described addressing information, obtains the step that described bitstream data transfers the message breath; Wherein, duplicate described bitstream data message according to the described message breath that transfers.
The method of described narrow band data stream multicast and/or broadcast transmitted in broadband network, wherein, described step e is according to described addressing information, the setting that needs are received the bitstream data of addressing information carry out addressing information and remove and handle.
The method of described narrow band data stream multicast and/or broadcast transmitted in broadband network, wherein, described step D carries out multicast or broadcasting to each downstream site at last again for described packet is sent to superior node step by step by upstream Interface after all data messages that final aggregation node will send converge; Wherein, the middle node that is replicated in of described multicast or broadcasting is finished step by step.
Adopt the method for the invention and device, compared with prior art, reached the purpose of in broadband network multicast and/or broadcast transmitted low speed arrowband bit stream, simultaneously because in multicast and/or broadcast transmitted process, only need set up a virtual link or Virtual Channel between any two nodes, and only send one time present relatively technology with a message, save transfer bandwidth and link circuit resource greatly, improved efficiency of transmission.Describe the present invention below in conjunction with the drawings and specific embodiments, but not as a limitation of the invention.
Description of drawings
The schematic diagram that Fig. 1 packs and unpacks in the broadband network transmission course for the arrowband bit stream;
Fig. 2 is the schematic diagram that converges the back broadcasted application;
Fig. 3 is the schematic diagram that disperses broadcasting or multicast.
Embodiment
As shown in Figure 1, bit stream information is from directly delivering to the information source access node switch 2 of broadband network after information source 1 is sent, switch 2 is gathered packetization module these bit stream timing acquiring by the bitstream data that is provided with in it, and according to the processing of packing of fixing length (as 32bytes), address module according to the access interface of information source access node and the network planning in advance by the bitstream data that is provided with in the switch 2 again, stamp addressing for the packet header of the packet of this bit stream, what this addressing indicated is the information of information source, be the whole network unique (example: be lower than 256 as the whole network information source quantity, then can adopt a byte) as the addressing field.This message that is encapsulated again carries out the forwarding of multicast or broadcasting by the bitstream data packet forwarding module on all nodes (referring to not comprise the all-network node of the information source and the stay of two nights) that are present in whole bit stream transmission in the network in broadband then, and the foundation that every bit is transmitted is the information source addressing of being beaten at the information source access node.When the data message of bit stream arrives destination node, configuration according to the information source of the reception of the stay of two nights, by last node 3, recovering module by unpacking of the bitstream data message that is provided with in it addresses the information source in the packet header of the packet of useful bit stream and removes, if need to pass through shaping, then the data message of bit stream sent to the stay of two nights 4.By broadband network, just finished the task of the bit stream transmission from the information source to the stay of two nights like this.Wherein, for the bit stream that guarantees the information source that the stay of two nights 4 receives has quality assurance, connection between the node in the middle of the network should be adopted a virtual link of atm link or frame relay link, on this virtual link, carry all bitstream data bags that need transmit between two connected nodes, adopt this method, the virtual connections between any two interconnected nodes only need be set up one and can meet the demands.
Be the schematic diagram that converges the back broadcasted application as shown in Figure 2.The basic process of this implementation is described below: at first be after the access node 2 of information source 1 breaks into packet to bit stream according to the mode that Fig. 1 is described and addresses, to send to even higher level of node 5 by a upstream Interface; Even higher level of node sends to even higher level of node by up going port again, converge so step by step, after converging all data messages, final aggregation node 6 carries out multicast or broadcasting to each downstream site more at last, duplicating of multicast and/or broadcasting is that node in the centre is finished step by step, only need a logical channel or virtual link between per two nodes, can on certain degree, reduce use like this to the network bandwidth, the node that to the last inserts the stay of two nights promptly addresses the releasing processing to message data to the processing of landing that message carries out describing among Fig. 1 again, through shaping, bitstream data is sent to the stay of two nights 4.Solid arrow among Fig. 2 thick and thin represented the speed of the bit stream of virtual link, and the direction of arrow is represented the transmission direction of bit stream.Wherein, it is actual between any two nodes that only to need a virtual link to adopt the benefit of this method be the receiving terminal bit stream that sends of the flexible configuration various information source that need receive as required, the planning of network is also fairly simple clear, is applicable to the situation that network layer is more clear, network size is bigger.
Be the schematic diagram that disperses broadcasting or multicast as shown in Figure 3.The basic process of this implementation is described below: the bit stream that each information source (information source 11, information source 12) is sent access node 21 and access node 22 pack handle after, the requirement of the stay of two nights of Jie Shouing is carried out multicast and/or broadcasting respectively by transmission node 71,72,73,74 as required, deliver to all stays of two nights that will receive (among the figure, the stay of two nights 41 is to the stay of two nights 46), illustrated solid arrow and dotted arrow are represented the flow direction of the bit stream that two different information sources send respectively, actually between any two nodes only need a virtual link.The benefit that adopts this method is a flexible configuration as required, saves the bandwidth resources of network, and it is fairly simple clear that bit stream moves towards, and is applicable to the situation that network size is smaller.
In addition, the dual mode that Fig. 2 and Fig. 3 describe can be realized in same broadband network simultaneously, according to the situation of the network planning, uses mode shown in Figure 3 in the part, adopts mode shown in Figure 2 on the whole.
Certainly; the present invention also can have other various embodiments; under the situation that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.
Claims (8)
1, the device of a kind of narrow band data stream multicast and/or broadcast transmitted in broadband network, be used for by information source access node, data transmission nodal and stay of two nights access node in broadband network multicast and/or broadcast transmitted bitstream data based on the arrowband, it is characterized in that, comprising:
Bitstream data is gathered packetization module, in order to gathering the bitstream data of sending from information source, and described bitstream data is done the packing of fixed-length data message by the length of setting handle;
Bitstream data message addressing module is in order to carry out message addressing and encapsulation to the bitstream data message that forms;
The bitstream data packet forwarding module duplicates the data message in order to the addressing information according to the bitstream data heading, and multicast and/or broadcasting are transmitted then;
The bitstream data message unpack the recovery module, in order to removing addressing at the bit stream receiving terminal, and described bitstream data is sent to the stay of two nights to described bitstream data message;
Wherein, described bitstream data collection packetization module and bitstream data message addressing module are arranged on the described information source access node; Described bitstream data packet forwarding module is arranged on described information source access node, data transmission nodal and the stay of two nights access node; The recovery module that unpacks of described bitstream data message is arranged on the described stay of two nights access node; Any two interconnected nodes link to each other by a logical channel or virtual link in described information source access node, data transmission nodal and the stay of two nights access node.
2, the device of narrow band data according to claim 1 stream multicast and/or broadcast transmitted in broadband network, it is characterized in that the addressing information of described bitstream data heading is formed according to the access interface of information source access node and/or definite network planning by described message addressing module.
3, the device of narrow band data according to claim 2 stream multicast and/or broadcast transmitted in broadband network is characterized in that the addressing information of described bitstream data heading is used to indicate the information of described information source.
4, the method for a kind of narrow band data stream multicast and/or broadcast transmitted in broadband network, be used for by information source access node, data transmission nodal and stay of two nights access node in broadband network multicast and/or broadcast transmitted bitstream data based on the arrowband, it is characterized in that, comprising:
Steps A, the transmission of described bitstream data is by setting up a logical channel or a virtual link between any two nodes in described information source access node, data transmission nodal or stay of two nights access node;
Step B gathers bitstream data on the access interface of described information source access node, and described bitstream data is broken into data message by the length of setting;
Step C after packing data, addresses and encapsulates the message after the packing;
Step D, described data transmission nodal duplicates described bitstream data message according to the bitstream data message addressing information that receives, and described data message is transmitted in multicast and/or broadcasting then;
Step e is removed the addressing to described bitstream data message on the access node of the described stay of two nights, and described bitstream data is sent to the stay of two nights.
5, the method for narrow band data according to claim 4 stream multicast and/or broadcast transmitted in broadband network is characterized in that, comes described data are addressed according to access interface and/or definite network planning of described information source access node; Described addressing information is used to indicate the information of described information source.
6, the method for narrow band data according to claim 5 stream multicast and/or broadcast transmitted in broadband network is characterized in that described step D further comprises one according to described addressing information, obtains the step that described bitstream data transfers the message breath; Wherein, duplicate described bitstream data message according to the described message breath that transfers.
7, according to the method for claim 4,5 or 6 described narrow band datas stream multicast and/or broadcast transmitted in broadband network, it is characterized in that, described step e is according to described addressing information, the setting that needs are received the bitstream data of addressing information carry out addressing information and remove and handle.
8, according to the method for claim 4,5 or 6 described narrow band datas stream multicast and/or broadcast transmitted in broadband network, it is characterized in that, described step D carries out multicast or broadcasting to each downstream site at last again for described data message is sent to superior node step by step by upstream Interface after all data messages that final aggregation node will send converge; Wherein, the middle node that is replicated in of described multicast or broadcasting is finished step by step.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200510011609XA CN100544314C (en) | 2005-04-21 | 2005-04-21 | The method and the device of narrow band data stream multicast and/or broadcast transmitted in broadband networks |
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| Application Number | Priority Date | Filing Date | Title |
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| CNB200510011609XA CN100544314C (en) | 2005-04-21 | 2005-04-21 | The method and the device of narrow band data stream multicast and/or broadcast transmitted in broadband networks |
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| CN1855876A CN1855876A (en) | 2006-11-01 |
| CN100544314C true CN100544314C (en) | 2009-09-23 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102238016A (en) * | 2010-04-30 | 2011-11-09 | 费伟华 | Network data broadcasting and continuous broadcasting method |
| CN108259351B (en) * | 2017-11-27 | 2020-12-15 | 上海微波技术研究所（中国电子科技集团公司第五十研究所） | Data transmission method suitable for wide-band and narrow-band channel hybrid network |
| CN112671599B (en) * | 2020-12-08 | 2023-01-13 | 广东沃科融合通讯有限公司 | Heartbeat information sending method and device and electronic equipment |
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