CN106961390A - A kind of method and device of E1 structurings slot compressed mode packet transmission - Google Patents
A kind of method and device of E1 structurings slot compressed mode packet transmission Download PDFInfo
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- CN106961390A CN106961390A CN201610014067.XA CN201610014067A CN106961390A CN 106961390 A CN106961390 A CN 106961390A CN 201610014067 A CN201610014067 A CN 201610014067A CN 106961390 A CN106961390 A CN 106961390A
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- data
- time slot
- effective time
- ethernet
- data frames
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/10—Flow control; Congestion control
- H04L47/13—Flow control; Congestion control in a LAN segment, e.g. ring or bus
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/10—Flow control; Congestion control
- H04L47/20—Traffic policing
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/10—Flow control; Congestion control
- H04L47/23—Bit dropping
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
The invention discloses a kind of method and device of E1 structurings slot compressed mode packet transmission, it is related to packet switching network communication technique field, its method comprises the following steps：By carrying out framing processing to E1 data flows, E1 data frames are obtained；Strategy is transmitted according to effective traffic, the not free timeslot of transmission services data is reduce in resulting E1 data frames, obtaining the E1 data frames is used for effective time slot data of effective time slot of transmission services data；It will be cached in effective time slot data feeding caching device；Ethernet encapsulation is carried out by the way that effective time slot data for reading in part device will be cached, ethernet data frame is obtained, and via too net data frame described in Ethernet transmission.The present invention if wherein free timeslot is reduce, saves massive band width, reduces network cost when the packet switching network is transmitted.
Description
Technical field
The present invention relates to packet switching network communication technique field, more particularly to a kind of E1 structurings time slot compression mould
The method and device of formula packet transmission.
Background technology
With network technology evolution and the network integration, in next generation network, carried out by elementary cell of packet
Network data transmission and the mode exchanged will occupy dominant position, and either IP network, MPLS network are all bags
The representative of exchange network.Another aspect next generation network service will not be existing overnight with regard to that can build up
Serve the PDH networks of the public voice communication services of PSTN will also long-term existence, largely exist on network
User PDH equipment will be also continuing with.In order to protect user's existing investment in PDH equipment, in the next generation
It is very necessary that PDH service accesses and PDH data penetration transmission abilities are provided in packet network.
E1 is exactly one kind of PDH business, and E1 is a kind of tributary signal that the area such as China and Europe is used, and is
The main carriers of various basic business transmission.
E1 structuring base frames：E1 each base frame has 256 bit.Every 8 bit are a time slot.One
Frame has 256/8=32 time slot (time-slots), and numbering is TS0-TS31 respectively.The letter of each time slot
Number with a width of 64Kbps.TS0 transmits base frame synchronizing signal；TS1-TS15 and TS17-TS31 carry for user
For service channel；TS16 may be used as transmitting signaling, can also be with when that need not transmit signaling
TS1-TS15, TS17-TS31 are equally used as service channel, E1 frames 8000 frame per second.
The content of the invention
It is an object of the invention to provide a kind of method of E1 structurings slot compressed mode packet transmission and dress
Put, solve in the prior art that E1 frames are in the business of carrying, free timeslot in TS0-TS31 wastes a large amount of
The problem of bandwidth.
According to an aspect of the invention, there is provided a kind of side of E1 structurings slot compressed mode packet transmission
Method, comprises the following steps：
By carrying out framing processing to E1 data flows, E1 data frames are obtained；
Strategy is transmitted according to effective traffic, the not sky of transmission services data is reduce in resulting E1 data frames
Idle gap, obtaining the E1 data frames is used for effective time slot data of effective time slot of transmission services data；
It will be cached in effective time slot data feeding caching device；
Ethernet encapsulation is carried out by the way that the effective time slot data read in part device will be cached, Ethernet data is obtained
Frame, and via too net data frame described in Ethernet transmission.
Preferably, it is described that strategy is transmitted according to effective traffic, reduce in resulting E1 data frames and do not transmit
The free timeslot of business datum includes：
According to the use of transmission services data slot is not tactful in the predetermined data frame on E1 of user, E1 is determined
Free timeslot in data frame；
During the E1 data frames are cached, identified free timeslot is abandoned, i.e., not to free timeslot data
Carry out caching process.
Preferably, also including to too net data frame carries out Ethernet deblocking described in being transmitted via Ethernet, obtaining
E1 data frames.
Preferably, it is described to too net data frame carries out Ethernet deblocking described in being transmitted via Ethernet, obtain
E1 data frames include：
By to too net data frame carries out pseudo line tag identification described in being transmitted via Ethernet, extracting E1 data
Effective time slot data in frame；
It will be cached in effective time slot data feeding caching device of the E1 data frames extracted；
The effective time slot data cached in caching device are unsealed, and effective time slot data that solution is honored as a queen are inserted
Enter into E1 data frames.
Preferably, according to the frame head configured information of E1 data frames, effective time slot data that solution is honored as a queen are inserted into
In E1 data frames.
There is provided a kind of dress of E1 structurings slot compressed mode packet transmission according to another aspect of the present invention
Put, including：
Acquisition module, for by carrying out framing processing to E1 data flows, obtaining E1 data frames, and according to
Effective traffic transmission strategy, reduces in resulting E1 data frames the not free timeslot of transmission services data,
Obtaining the E1 data frames is used for effective time slot data of effective time slot of transmission services data；
Cache module, for will be cached in effective time slot data feeding caching device；
Package module, for carrying out Ethernet encapsulation by will cache the effective time slot data read in part device, is obtained
To ethernet data frame, and via too net data frame described in Ethernet transmission.
Preferably, the acquisition module includes：
Determining unit, for according to transmission services data slot does not make in the predetermined data frame on E1 of user
With strategy, the free timeslot in E1 data frames is determined；
Discarding unit, for during the E1 data frames are cached, abandoning identified free timeslot.
Preferably, also including deblocking module, for too net data frame described in being transmitted via Ethernet is carried out with
Too net deblocking, obtains E1 data frames.
Preferably, the deblocking module includes：
Extraction unit, for by too net data frame carries out pseudo line tag knowledge described in being transmitted via Ethernet
Not, effective time slot data in E1 data frames are extracted；
Carried out in buffer unit, effective time slot data feeding caching device for the E1 data frames that will be extracted
Caching；
Unit is unsealed, for being unsealed to the effective time slot data cached in caching device, and solution is honored as a queen
Effective time slot data are inserted into E1 data frames.
Preferably, according to the frame head configured information of E1 data frames, effective time slot data that solution is honored as a queen are inserted into
In E1 data frames.
Compared with prior art, the beneficial effects of the present invention are：
E1 frames of the present invention appear in TS0-TS31 some free timeslots in the business of carrying, wherein idle
Time slot reduces, and saves massive band width, reduces network cost.
Brief description of the drawings
Fig. 1 is a kind of method stream of E1 structurings slot compressed mode packet transmission provided in an embodiment of the present invention
Cheng Tu；
Fig. 2 is a kind of device knot of E1 structurings slot compressed mode packet transmission provided in an embodiment of the present invention
Composition；
Fig. 3 is the veneer block diagram provided in an embodiment of the present invention for realizing whole time slot compression function；
Fig. 4 is the schematic diagram of E1 data frame formats provided in an embodiment of the present invention；
Fig. 5 is the schematic diagram that E1 data frames provided in an embodiment of the present invention are mutually changed with ethernet data frame；
Fig. 6 is schematic diagrames of the E1 provided in an embodiment of the present invention to Ethernet bearing data storage format；
Fig. 7 is schematic diagram of the Ethernet provided in an embodiment of the present invention to E1 bearing data storage formats.
Embodiment
Below in conjunction with accompanying drawing to a preferred embodiment of the present invention will be described in detail, it will be appreciated that described below
Preferred embodiment be merely to illustrate and explain the present invention, be not intended to limit the present invention.
Fig. 1 is a kind of method stream of E1 structurings slot compressed mode packet transmission provided in an embodiment of the present invention
Cheng Tu, as shown in figure 1, comprising the following steps：
Step S101：By carrying out framing processing to E1 data flows, E1 data frames are obtained；
Step S102：Strategy is transmitted according to effective traffic, reduces in resulting E1 data frames and does not transmit industry
Be engaged in data free timeslot, obtain the E1 data frames be used for transmission services data effective time slot it is effective when
Gap data；
Step S103：It will be cached in effective time slot data feeding caching device；
Step S104：Ethernet encapsulation is carried out by the way that the effective time slot data read in part device will be cached, is obtained
Ethernet data frame, and via too net data frame described in Ethernet transmission.
Wherein, it is described that strategy is transmitted according to effective traffic, reduce in resulting E1 data frames and do not transmit industry
The free timeslot of business data includes：According to not transmission services data slot in the predetermined data frame on E1 of user
Using strategy, determine the free timeslot in E1 data frames；During the E1 data frames are cached, institute is abandoned
The free timeslot of determination, i.e., do not carry out caching process to free timeslot data.
Present invention additionally comprises to too net data frame carries out Ethernet deblocking described in being transmitted via Ethernet, obtain
E1 data frames.Specifically, it is described to too net data frame carries out Ethernet solution described in being transmitted via Ethernet
Envelope, obtaining E1 data frames includes：By to too net data frame carries out pseudo-wire mark described in being transmitted via Ethernet
Label identification, extracts effective time slot data in E1 data frames；By effective timeslot number of the E1 data frames extracted
Cache and cached in device according to feeding；The effective time slot data cached in caching device are unsealed, and will
Effective time slot data that solution is honored as a queen are inserted into E1 data frames.Wherein, indicated to believe according to the frame head of E1 data frames
Breath, effective time slot data that solution is honored as a queen are inserted into E1 data frames.
Fig. 2 is a kind of device knot of E1 structurings slot compressed mode packet transmission provided in an embodiment of the present invention
Composition, as shown in Fig. 2 including：Acquisition module 201, cache module 202 and package module 203.Institute
Acquisition module 201 is stated, for by carrying out framing processing to E1 data flows, obtaining E1 data frames, Yi Jigen
Strategy is transmitted according to effective traffic, the not free timeslot of transmission services data is reduce in resulting E1 data frames,
Obtaining the E1 data frames is used for effective time slot data of effective time slot of transmission services data；The caching mould
Block 202, for will be cached in effective time slot data feeding caching device；The package module 203,
For carrying out Ethernet encapsulation by the way that the effective time slot data read in part device will be cached, Ethernet data is obtained
Frame, and via too net data frame described in Ethernet transmission.
Wherein, the acquisition module 201 includes：Determining unit, for predetermined on E1 numbers according to user
According to the use of transmission services data slot is not tactful in frame, the free timeslot in E1 data frames is determined；Abandon single
Member, for during the E1 data frames are cached, abandoning identified free timeslot.
Present invention additionally comprises deblocking module, for too net data frame carries out ether described in being transmitted via Ethernet
Net deblocking, obtains E1 data frames.Specifically, the deblocking module includes：Extraction unit, for passing through
To too net data frame carries out pseudo line tag identification described in being transmitted via Ethernet, having in E1 data frames is extracted
Imitate time slot data；Buffer unit, effective time slot data of the E1 data frames for that will be extracted send into buffer
Cached in part；Unit is unsealed, for being unsealed to the effective time slot data cached in caching device, and
Effective time slot data that solution is honored as a queen are inserted into E1 data frames.Wherein, indicated according to the frame head of E1 data frames
Information, effective time slot data that solution is honored as a queen are inserted into E1 data frames.
Fig. 3 is the veneer block diagram provided in an embodiment of the present invention for realizing whole time slot compression function, as shown in figure 3,
With FPGA (Field-Programmable Gate Array, field programmable gate array) for processing core,
It is with CPU, memory device DDR or SSRAM, interface chip and clock circuit outside.The interface chip is used
In by outside 2M electric signals, recovering 2M clocks and 2M data, CPU is used for upper strata webmaster and FPGA
Management information transmission intermediary, obtain the configuration needs information of user, and the configuration needs information of user is sent out
Give FPGA, so that FPGA carries out data processing according to the demand of user, and by FPGA performance and
Alarm uploads to webmaster, and memory device is used for the data for storing 2M, and clock circuit is used to provide clock signal.
That is, FPGA is equivalent to protocol converter, completes E1 frames and mutually changed to ethernet frame.Customer side and
System side both sides are respectively connected to E1 frames and ethernet frame, and configuration information is connected by communication bus in plate with CPU.
Fig. 4 is the schematic diagram of E1 data frame formats provided in an embodiment of the present invention, as shown in figure 4, including E1
32 time slots and the effective time slots of user configuring TS1`TS31 of data frame.Wherein, Si refers to spare international byte,
A remote alarms RAI, Sa4`Sa8 refer to the domestic byte of spare national, even frame 0011011 and odd-numbered frame 1
For frame alligning information.
Fig. 5 is the schematic diagram that E1 data frames provided in an embodiment of the present invention are mutually changed with ethernet data frame,
As shown in figure 5, including E1 frames to ethernet frame direction and ethernet frame to E1 frame directions.E1 frames are to ether
Net frame direction is referred to as up, and ethernet frame to E1 frame directions is referred to as descending.
E1 frames are to ethernet frame direction：
1：Alarm detection part：The data that interface chip is sent out carry out alarm detection；
AIS detections are carried out, principle is continuous 512bit, be 0 less than 3bit, ais alarm reported, by AIS
Alarm output, gives ethernet segment.
2：Framer parts：Complete E1 frame structure detection, various performance statisticses；
3：Part during storage：Effective time slot data press-in caching, data storage is stored by frame；
4：The packed part of Ethernet：Realization changes the stream compression of E1 frame emulated ports into Ethernet message.
That is, E1 data enter interface chip by e1 port, 2M data and 2M clocks, FPGA are recovered
Interface module part carry out alarm detection；FPGA Frame modules carry out framing processing；FPGA compression
Module reduces free timeslot according to user configuring；Effective time slot press-in caching, data storage is stored by frame
, such as free timeslot data storage is sky；According to user configuring message size, the transmission of ether network packet is sealed into.
Ethernet frame is to E1 frame directions：
1：Ethernet decapsulates part：The ether network packet sent is recognized, according to the label of message, phase is inquired about
The configuration information (link number, cascade number, effective timeslot number etc.) answered, then from the message of Ethernet
Recover E1 data flow.And data buffer storage gets up.
2：Framer modules regenerate E1 frame structure again.
3：Interface process part：E1 data clock regeneration is carried out, clock jitter removing is moved.
That is, recognizing ethernet frame by pseudo line tag, effective time slot data are extracted；By effective timeslot number
According to press-in caching, while indicating frame header position；FPGA Frame modules are unsealed, and according to frame head position
Confidence breath effective time slot data are postponed by frame deposit in read out；Row clock is entered again to effective time slot Data Data
Raw, clock jitter removing is moved.
Fig. 6 is schematic diagrames of the E1 provided in an embodiment of the present invention to Ethernet bearing data storage format, is such as schemed
Shown in 6, data storage is stored by frame, and a frame memory space is 32byte, and Addr low levels are used in address by 0~31
[4:0] represent, a frame count Addr high positions [11:5] represent, compressed for time slot, had per frame memory space
Free time, frame alignment is easy to when reading.First time slot is found to serial data flow A inside FPGA.
Obtain determining 32 time slot data B of data frame.According to the effective gap information of user configuring, data B is carried out
Compression is obtained in effective time slot data C, deposit caching, and according to configuration cascaded message, E1 frames are encapsulated into
In ethernet frame D.
Fig. 7 is schematic diagram of the Ethernet provided in an embodiment of the present invention to E1 bearing data storage formats, is such as schemed
Shown in 7, data storage is stored by frame, and data are Coutinuous stores, without frame originating point information, it should be pointed out that frame head
It is easy to data read-out to recover in position.Ethernet frame E detections are carried out inside FPGA, according to user configuring, are carried
Take E1 data F to enter caching, E1 frames G regeneration is carried out reading direction, by frame head configured information by reading
In data insertion E1 data frames.
In summary, the present invention has following technique effect：
The present invention realizes the slot compressed mode of E1 structuring business, saves the network bandwidth, and reduce net
Network cost.
Although the present invention is described in detail above, the invention is not restricted to this, the art technology
Personnel can carry out various modifications according to the principle of the present invention.Therefore, all modifications made according to the principle of the invention,
It all should be understood to fall into protection scope of the present invention.
Claims (10)
1. a kind of method of E1 structurings slot compressed mode packet transmission, it is characterised in that including following step
Suddenly：
By carrying out framing processing to E1 data flows, E1 data frames are obtained；
Strategy is transmitted according to effective traffic, the not sky of transmission services data is reduce in resulting E1 data frames
Idle gap, obtaining the E1 data frames is used for effective time slot data of effective time slot of transmission services data；
It will be cached in effective time slot data feeding caching device；
Ethernet encapsulation is carried out by the way that the effective time slot data read in part device will be cached, Ethernet data is obtained
Frame, and via too net data frame described in Ethernet transmission.
2. according to the method described in claim 1, it is characterised in that described that strategy is transmitted according to effective traffic,
The free timeslot of transmission services data does not include in E1 data frames obtained by reducing：
According to the use of transmission services data slot is not tactful in the predetermined data frame on E1 of user, E1 is determined
Free timeslot in data frame；
During the E1 data frames are cached, identified free timeslot is abandoned.
3. according to the method described in claim 1, it is characterised in that also including to being transmitted via Ethernet
The too net data frame carries out Ethernet deblocking, obtains E1 data frames.
4. method according to claim 3, it is characterised in that the institute to being transmitted via Ethernet
State too net data frame and carry out Ethernet deblocking, obtaining E1 data frames includes：
By to too net data frame carries out pseudo line tag identification described in being transmitted via Ethernet, extracting E1 data
Effective time slot data in frame；
It will be cached in effective time slot data feeding caching device of the E1 data frames extracted；
The effective time slot data cached in caching device are unsealed, and effective time slot data that solution is honored as a queen are inserted
Enter into E1 data frames.
5. method according to claim 4, it is characterised in that indicated to believe according to the frame head of E1 data frames
Breath, effective time slot data that solution is honored as a queen are inserted into E1 data frames.
6. a kind of device of E1 structurings slot compressed mode packet transmission, it is characterised in that including：
Acquisition module, for by carrying out framing processing to E1 data flows, obtaining E1 data frames, and according to
Effective traffic transmission strategy, reduces in resulting E1 data frames the not free timeslot of transmission services data,
Obtaining the E1 data frames is used for effective time slot data of effective time slot of transmission services data；
Cache module, for will be cached in effective time slot data feeding caching device；
Package module, for carrying out Ethernet encapsulation by will cache the effective time slot data read in part device, is obtained
To ethernet data frame, and via too net data frame described in Ethernet transmission.
7. device according to claim 6, it is characterised in that the acquisition module includes：
Determining unit, for according to transmission services data slot does not make in the predetermined data frame on E1 of user
With strategy, the free timeslot in E1 data frames is determined；
Discarding unit, for during the E1 data frames are cached, abandoning identified free timeslot.
8. device according to claim 6, it is characterised in that also including deblocking module, for warp
Too net data frame carries out Ethernet deblocking as described in being transmitted Ethernet, obtains E1 data frames.
9. device according to claim 8, it is characterised in that the deblocking module includes：
Extraction unit, for by too net data frame carries out pseudo line tag knowledge described in being transmitted via Ethernet
Not, effective time slot data in E1 data frames are extracted；
Carried out in buffer unit, effective time slot data feeding caching device for the E1 data frames that will be extracted
Caching；
Unit is unsealed, for being unsealed to the effective time slot data cached in caching device, and solution is honored as a queen
Effective time slot data are inserted into E1 data frames.
10. device according to claim 9, it is characterised in that indicated according to the frame head of E1 data frames
Information, effective time slot data that solution is honored as a queen are inserted into E1 data frames.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610014067.XA CN106961390A (en) | 2016-01-08 | 2016-01-08 | A kind of method and device of E1 structurings slot compressed mode packet transmission |
| PCT/CN2016/094656 WO2017118019A1 (en) | 2016-01-08 | 2016-08-11 | E1 structured time-slot compression mode packet transport method and apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610014067.XA CN106961390A (en) | 2016-01-08 | 2016-01-08 | A kind of method and device of E1 structurings slot compressed mode packet transmission |
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| CN106961390A true CN106961390A (en) | 2017-07-18 |
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| CN201610014067.XA Pending CN106961390A (en) | 2016-01-08 | 2016-01-08 | A kind of method and device of E1 structurings slot compressed mode packet transmission |
Country Status (2)
| Country | Link |
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| CN (1) | CN106961390A (en) |
| WO (1) | WO2017118019A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113810244A (en) * | 2021-08-18 | 2021-12-17 | 柳州达迪通信技术股份有限公司 | Idle channel identification system, method, device and storage medium |
| CN115297073A (en) * | 2022-07-22 | 2022-11-04 | 武汉烽火技术服务有限公司 | E1 service transmission method and device |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109412895B (en) * | 2018-11-14 | 2020-09-18 | 电信科学技术第五研究所有限公司 | Method and equipment for detecting E1/T1 link time slot binding mode |
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| US6963561B1 (en) * | 2000-12-15 | 2005-11-08 | Atrica Israel Ltd. | Facility for transporting TDM streams over an asynchronous ethernet network using internet protocol |
| CN1738224A (en) * | 2004-08-19 | 2006-02-22 | 华为技术有限公司 | TDM data and frame format conversion circuit and method , transmission switching system and method |
| CN101361003A (en) * | 2006-01-12 | 2009-02-04 | 思科技术公司 | System and method for implementing a preemptive retransmit for error recovery in a communications environment |
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| CN113810244A (en) * | 2021-08-18 | 2021-12-17 | 柳州达迪通信技术股份有限公司 | Idle channel identification system, method, device and storage medium |
| CN113810244B (en) * | 2021-08-18 | 2022-09-16 | 柳州达迪通信技术股份有限公司 | Idle channel identification system, method, device and storage medium |
| CN115297073A (en) * | 2022-07-22 | 2022-11-04 | 武汉烽火技术服务有限公司 | E1 service transmission method and device |
| CN115297073B (en) * | 2022-07-22 | 2024-01-26 | 烽火通信科技股份有限公司 | E1 service transmission method and device |
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| Publication number | Publication date |
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| WO2017118019A1 (en) | 2017-07-13 |
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