CN101052049A - Data general transmission method - Google Patents
Data general transmission method Download PDFInfo
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- CN101052049A CN101052049A CNA2007101076648A CN200710107664A CN101052049A CN 101052049 A CN101052049 A CN 101052049A CN A2007101076648 A CNA2007101076648 A CN A2007101076648A CN 200710107664 A CN200710107664 A CN 200710107664A CN 101052049 A CN101052049 A CN 101052049A
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Abstract
The method comprises: during transmitting data in physical layer, using a data frame structure with a fixed time length to transmit data; said data frame structure comprises fields, frame synchronization, frame initiation and sub-channel bearing data service; according to a preset rule, mapping the service type corresponding to the transmitted data into the sub-channel bearing the data service. By using a frame structure with a fixed time length, the real-time QoS can be ensured, and the bandwidth can be allocated based on the variation the network traffic.
Description
Technical field
The present invention relates to data communication field, be specifically related to a kind of general transmission method of data.
Background technology
Communication network is from voice-based synchronous transmission net to prevailing ATM(Asynchronous Transfer Mode) network once, Internet protocol (IP) is the IP network of core till now again, the quick growth of data communication, make that the speech data ratio descends rapidly in the flow of telecommunication service, the huge increase of data throughout has simultaneously brought huge pressure to network, telecom operators are by constantly expanding band width in physical and correlation technique, increased the ability of network transaction data, but the increase of band width in physical is to lag behind the requirement of user for transfer of data forever.
Present communication network is carrying multiple business, such as real time business such as voice, non real-time key business such as video, online game, non-real-time service as network browsing.Network based on IP communication, in order to guarantee under the impact of big data quantity, to guarantee the reliability of network and the service quality of corresponding service (QoS), carried out number of research projects, and formed standardization, but because the restriction of IP network design itself supports the ability of the real time business of fixed bit rate not have a good guarantee at whole network.And ATM has fairly perfect system as an important techniques, but there are a series of problems such as complexity in it, finally makes to gradually reduce in whole network, still but has the advantage of guaranteed qos ability.
In sum, press for a kind of simply relatively in the prior art, and can carry multiple business, new data general-purpose transmission method that simultaneously can compatible existing network technology.
Summary of the invention
In order to overcome problems of the prior art, the invention provides a kind of general transmission method of data, can solve the carrying real time business, the problem of multiple business such as non real-time key business and non-real-time service, and can guarantee the requirement of user for service quality.
The present invention specifically is achieved in that
A kind of general transmission method of data, when the data physical layer is carried out transfer of data,
Employing has fixedly that the data frame structure of duration carries out the transmission of data,
Described data frame structure comprises field, frame synchronously, the subchannel of frame initial sum bearing data service;
To be mapped in the subchannel of corresponding bearing data service according to the rule of setting with the data corresponding service type of transmission.
In the method for the invention, described fixedly duration is 125us.
In the method for the invention, the frame format of the subchannel of described bearing data service specifically comprises following field, packet length, to the data of the variable-length of the cyclic redundancy check (CRC) of packet length and carrying.
In the method for the invention, described data service comprises, management information business, real time business, non real-time key business, non-real-time service;
In the method for the invention, the subchannel of described bearing data service comprises, management subchannel, real time business subchannel, non real-time key business subchannel and non-real-time service subchannel.
In the method for the invention, described management subchannel, transmit management information when data service is shone upon, according to the requirement of this data service to bandwidth, distributes suitable bandwidth to give the subchannel of this data service of carrying.
Adopt the method for the invention, when transmitting data, adopt the fixing frame structure of duration can guarantee the service quality of real time business, satisfy the needs of the business of fixed-bandwidth, and the bandwidth of can be flexibly distributing miscellaneous service to take according to the variation of network traffics, provide and the similar bandwidth availability ratio of IP network, reliable network management channel (nmc) is provided, guaranteed the requirement of user service quality.
Description of drawings
Fig. 1 is the frame structure schematic diagram of transmission data in the method for the invention;
Fig. 2 is the frame format schematic diagram of the subchannel of bearing data service.
Embodiment
Be described in further detail below in conjunction with the embodiment of accompanying drawing the method for the invention.
The general transmission method of data of the present invention, by on physical layer, establishing a frame structure that is used to transmit data, in the physical layer interface part the shared bandwidth of transport service is controlled, and dynamic assignment corresponding bandwidth as required, provide flexible and effective and efficient manner, realize the reasonable distribution of the bandwidth of real time business and non-real-time service, carry various data services.There are three types basically in existing network data: IP data, ATM data, TDM (time division multiplexing) data, data of different types can be corresponding to different types of service, existing type of service is divided into the management information business, real time business, non real-time key business, non-real-time service, for data of different types, the corresponding service type is mapped in the frame structure in the corresponding subchannel, and existing ATM promptly is provided, TDM, the IP/ Ethernet data is to the mapping of frame structure.
Fig. 1 is the frame structure schematic diagram of the method for the invention transmission data.From the physical layer frame structure analysis, every frame has fixedly duration 125us, comprise the synchronous of frame in every frame, frame is initial, the subchannel of bearing data service, as shown in Figure 1, frame structure comprises field: synchronous (Premble) of frame, the beginning (SOF) of a frame, management subchannel (Management channel), real time business subchannel (Real time service channel), non real-time key business subchannel (Non-real time key service channel) and non-real-time service subchannel (Non-real time service channel).
Described management subchannel is used for transmit management information, such as the crucial control information that is used to control QoS etc.; Described real time business subchannel, the business that is used to carry fixed rates such as real time business, particularly voice; Described non real-time key business subchannel is used to carry crucial business, needs to guarantee certain bandwidth, and loaded service can be a video information, perhaps Zhuan Yong data channel; Described non-real-time service subchannel is used to carry non-real-time service, as the content of non-supervision such as browsing of webpage.
The method of the invention, the management subchannel that is provided for managing satisfies the requirement of network management reliability and fail safe, and information of managing can be the packet of ATM, also can be IP/ Ethernet data bag, packet is mapped in the management subchannel by mapping.The management subchannel is as special subchannel data, and how many its bandwidth distributes according to management data, thereby brings stability to network management, has overcome in the IP network network to occur when congested and problem such as can not manage.
For the corresponding different data service type of different data, different data service types is mapped in the different subchannels, as Fig. 1 is the Frame of general transmission data, the principle of Fig. 1 mapping is to shine upon according to different types of service, then be mapped in the real time business subchannel such as real time business, real time business comprises traditional TDM business, also comprise the similar business that is carried on the voice (VOIP) of IP network with real-time requirement, for the non real-time key business, such as video traffic, business user's key business etc. can be mapped to the crucial subchannel of non real-time, and other non-real-time services can be mapped to the non-real-time service subchannel.
The bandwidth control strategy of non real-time key business subchannel and non-real-time service subchannel, carry out unified management by the policy control server according to certain principle, the preferential occupied bandwidth of the relative non-real-time service of non real-time key business, provide the non-real-time service bandwidth is guaranteed, such as the minimum bandwidth that under the condition that has competition, can guarantee non-real-time service.
Subchannel for aforementioned carrying different pieces of information business, general frame format is arranged, be illustrated in figure 2 as the frame format of the subchannel of bearing data service, specifically comprise three fields, packet length Lenth, to the Cyclic Redundancy Check and the Payload of packet length, wherein Lenth is indicated as the payload size of subchannel channel; To the CRC of packet length, be indicated as the CRC check field of Lenth; Payload is indicated as the data of the variable-length of carrying.
Aforementioned tdm data correspondence be real time business, ATM and IP data can be divided into real time business and non-real-time service, corresponding data are mapped in the corresponding data service subchannel as payload in Fig. 2, because packet format size difference need and be mapped among the payload through suitable processing.
In the method for the invention, various data services are classified according to certain rule, according to classification results the data of different types business are mapped in the corresponding service subchannel.The mapping of data needs to carry out according to the rule of setting earlier adaptive, finishes the framing of data general-purpose transmission.The frame of transmission data, transmit data at interval according to regular time, the needs of the business of fixed-bandwidth are satisfied in assurance, such as the real-time speech business, take the subchannel of the fixed-bandwidth that can dispose, for non-real time service, the shared bandwidth of flexible allocation as required, and take corresponding subchannel, different business can be carried in the different channels according to the strategy of setting, also reasonably distributing according to the strategy of setting of channel occupancy bandwidth, the concrete method of salary distribution can be come unified management by the policy control server, thereby reaches the flow control of whole net.
Claims (5)
1, a kind of general transmission method of data is characterized in that,
When the data physical layer is carried out transfer of data, adopt to have fixedly that the data frame structure of duration carries out the transmission of data,
Described data frame structure comprises field, frame synchronously, the subchannel of frame initial sum bearing data service;
The data corresponding service type of transmission is mapped in the subchannel of corresponding bearing data service according to the rule of setting.
2, the general transmission method of data as claimed in claim 1 is characterized in that,
Described fixedly duration is 125us.
3, the general transmission method of data as claimed in claim 1 is characterized in that,
The frame format of the subchannel of described bearing data service specifically comprises following field, packet length, to the data of the variable-length of the cyclic redundancy check (CRC) of packet length and carrying.
4, as the general transmission method of claim 1 or 2 or 3 described data, it is characterized in that,
Described data service comprises, management information business, real time business, non real-time key business, non-real-time service;
The subchannel of described bearing data service comprises, management subchannel, real time business subchannel, non real-time key business subchannel and non-real-time service subchannel.
5, the general transmission method of data as claimed in claim 4 is characterized in that,
Described management subchannel, transmit management information when data service is shone upon, according to the requirement of this data service to bandwidth, distributes suitable bandwidth to give the subchannel of this data service of carrying.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101076648A CN101052049B (en) | 2007-05-24 | 2007-05-24 | Data general transmission method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2007101076648A CN101052049B (en) | 2007-05-24 | 2007-05-24 | Data general transmission method |
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| CN101052049A true CN101052049A (en) | 2007-10-10 |
| CN101052049B CN101052049B (en) | 2011-08-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2007101076648A Expired - Fee Related CN101052049B (en) | 2007-05-24 | 2007-05-24 | Data general transmission method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101771489A (en) * | 2009-01-06 | 2010-07-07 | 华为技术有限公司 | Method and system for uniformly transmitting different types of services, communication nodes and server |
| CN107332644A (en) * | 2017-06-02 | 2017-11-07 | 深圳思凯微电子有限公司 | Signal frame building method, device, system and computer-readable recording medium |
| CN112565918A (en) * | 2021-02-23 | 2021-03-26 | 北京创世云科技股份有限公司 | Method and device for taking over non-real-time data and electronic equipment |
-
2007
- 2007-05-24 CN CN2007101076648A patent/CN101052049B/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101771489A (en) * | 2009-01-06 | 2010-07-07 | 华为技术有限公司 | Method and system for uniformly transmitting different types of services, communication nodes and server |
| CN107332644A (en) * | 2017-06-02 | 2017-11-07 | 深圳思凯微电子有限公司 | Signal frame building method, device, system and computer-readable recording medium |
| WO2018219026A1 (en) * | 2017-06-02 | 2018-12-06 | 深圳思凯微电子有限公司 | Method, device and system for constructing signal frame, and computer readable storage medium |
| CN112565918A (en) * | 2021-02-23 | 2021-03-26 | 北京创世云科技股份有限公司 | Method and device for taking over non-real-time data and electronic equipment |
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| Publication number | Publication date |
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| CN101052049B (en) | 2011-08-10 |
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