CN102655469B - A kind of network equipment realizing differential clock equipment communication and system and method - Google Patents
A kind of network equipment realizing differential clock equipment communication and system and method Download PDFInfo
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- CN102655469B CN102655469B CN201110048851.XA CN201110048851A CN102655469B CN 102655469 B CN102655469 B CN 102655469B CN 201110048851 A CN201110048851 A CN 201110048851A CN 102655469 B CN102655469 B CN 102655469B
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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
- H04L47/28—Flow control; Congestion control in relation to timing considerations
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- Computer Networks & Wireless Communication (AREA)
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- Data Exchanges In Wide-Area Networks (AREA)
- Synchronisation In Digital Transmission Systems (AREA)
Abstract
The invention discloses a kind of network equipment realizing differential clock equipment communication and system and method, this network equipment includes packet message generation module；Described packet message generation module, for the cbr (constant bit rate) business data flow that receive is constituted packet message sends, and in described packet message using the timestamp of this packet message as the difference information being used for identification service frequency information.The solution of the present invention can make the network equipment of employing different operating clock frequency realize CBR Business Stream intercommunication, improves network communications capability, facilitates the maintenance of network.
Description
Technical field
The present invention relates to cbr (constant bit rate) (Constants Bit Rate is called for short CBR) service communication technical field, particularly relate to a kind of network equipment realizing differential clock equipment communication and system and method.
Background technology
CBR business is widely used in traditional network based on time division multiplex system, and can effectively ensure that time delay, shakes and the characteristic such as drift.Traditional network based on time division multiplex system is relatively low for the transmission efficiency ratio of packet message data, and the IPization of network is more and more obvious, in order to simplify network, necessarily will face the problem how to transmit CBR business in packet network.
CBR business be required for recovering at receiving terminal the clock of CBR business when transmitting in packet network, current standard defines three kinds of clock recovery modes: timing mode, differential clocks pattern and self-adaptation clock pattern again.Herein mainly for the reset mode of differential clocks.
At present, the canonical algorithm that differential clocks recovers has two kinds, and the differential clocks algorithm of a kind of asynchronous transfer mode (Asynchronous Transfer Mode is called for short ATM) organization definition, another kind is RTP (Real Time Transport
Protocol, is called for short RTP) the differential clocks algorithm that defines.The ultimate principle of both canonical algorithms is and makes peer network device accurately identify CBR Business Stream by the difference clock periodicity of transmission business clock information (i.e. the frequency information of CBR Business Stream) with equipment work clock information (i.e. network equipment working clock frequency information).But in actual application network, the frequency of the work clock that different manufacturers uses differs, when using the canonical algorithm that existing differential clocks recovers, after needing configuration originating network equipment consistent with the frequency of recipient network equipment, both just can be made to complete the intercommunication of CBR Business Stream, this brings the biggest difficulty to management and the maintenance of network, and which kind of frequency information the network equipment that different manufacturers produces uses typically to make network proponent conveniently know, it is the technical issues that need to address that the network equipment so how making employing different operating clock frequency carries out CBR Business Stream intercommunication.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of network equipment realizing differential clock equipment communication and system and method, makes the network equipment of employing different operating clock frequency realize CBR Business Stream intercommunication.
In order to solve above-mentioned technical problem, the invention provides a kind of network equipment realizing differential clock equipment communication, the described network equipment includes packet message generation module；Described packet message generation module, for the cbr (constant bit rate) business data flow that receive is constituted packet message sends, and in described packet message using the timestamp of this packet message as the difference information being used for identification service frequency information.
Further, the above-mentioned network equipment can also have the following characteristics that
The described network equipment includes that the time occurs module, and described packet message generation module includes packet message timestamp signal generating unit；
There is module in the described time, for using the work clock of the described network equipment to generate fiducial time；
Described packet message timestamp signal generating unit, for receiving the time timestamp as this packet message using the network equipment of the fixed rate information unit comprised in packet message on the basis of described fiducial time.
Further, the above-mentioned network equipment can also have the following characteristics that
There is module in the described time, for generating Precision Time Protocol form, global positioning system form, NTP form, form world concordant time or the fiducial time of network self-defining band unit of time form.
Further, the above-mentioned network equipment can also have the following characteristics that
The network equipment reception time of described fixed rate information unit refers to that this network equipment receives the fiducial time of a precalculated position information unit of first fixed position information unit or last fixed position information unit or centre in described packet message.
Further, the above-mentioned network equipment can also have the following characteristics that
The described network equipment includes packet message parsing module；
Described packet message parsing module, is used for when this network equipment is as the receiving terminal of packet message according to the time-stamp Recognition traffic frequencies information in packet message.
In order to solve above-mentioned technical problem, present invention also offers a kind of system realizing differential clock equipment communication, described system includes originating network equipment and recipient network equipment；Described originating network equipment includes packet message generation module；The described receiving terminal network equipment includes packet message parsing module；Described packet message generation module, for the cbr (constant bit rate) business data flow that receive is constituted packet message sends, and in described packet message using the timestamp of this packet message as the difference information being used for identification service frequency information；Described packet message parsing module, for according to the time-stamp Recognition traffic frequencies information in packet message.
Further, said system can also have the following characteristics that
Described originating network equipment includes that the time occurs module, and described packet message generation module includes packet message timestamp signal generating unit；
There is module in the described time, for using the work clock of described originating network equipment to generate fiducial time；
Described packet message timestamp signal generating unit, for receiving the time timestamp as this packet message using the originating network equipment of the fixed rate information unit comprised in packet message on the basis of described fiducial time.
Further, said system can also have the following characteristics that
The originating network equipment reception time of described fixed rate information unit refers to that this network equipment receives the fiducial time of a precalculated position information unit of first fixed position information unit or last fixed position information unit or centre in described packet message.
In order to solve above-mentioned technical problem, present invention also offers a kind of method realizing differential clock equipment communication, the cbr (constant bit rate) business data flow that will receive including: originating network equipment constitutes packet message and sends, and in described packet message using the timestamp of this packet message as the difference information being used for identification service frequency information；Recipient network equipment is according to the time-stamp Recognition traffic frequencies information in packet message.
Further, said method can also have the following characteristics that
Described originating network equipment uses the work clock of described originating network equipment to generate fiducial time；And on the basis of described fiducial time, the originating network equipment of the fixed rate information unit comprised in packet message is received the time timestamp as this packet message.
The solution of the present invention can make the network equipment of employing different operating clock frequency realize CBR Business Stream intercommunication, improves network communications capability, facilitates the maintenance of network.
Accompanying drawing explanation
Fig. 1 is the system construction drawing realizing differential clock equipment communication in embodiment.
Detailed description of the invention
As shown in Figure 1, it is achieved the system of differential clock equipment communication includes originating network equipment and recipient network equipment.
Originating network equipment includes that the time occurs module, packet message generation module；Recipient network equipment includes packet message parsing module.
Packet message generation module, for the cbr (constant bit rate) business data flow that receive is constituted packet message sends, and in described packet message using the timestamp of this packet message as the difference information being used for identification service frequency information；
Packet message parsing module, for according to the time-stamp Recognition traffic frequencies information in packet message.
The timestamp of this packet message specifically can generate in the following ways:
Packet message generation module includes packet message timestamp signal generating unit.
There is module in the time, for using the work clock of described originating network equipment to generate fiducial time.This time generation module can generate Precision Time Protocol (Precision Time Protocol, be called for short PTP) form, global positioning system (Global Positioning System, be called for short GPS) form, NTP (Network Time Protocol, it is called for short NTP) fiducial time of form or world concordant time (Universal Time Coordinated is called for short UTC) form.This time generation module can also generate the fiducial time of other form of network self-defining band unit of time.
Packet message timestamp signal generating unit, for receiving the time timestamp as this packet message using the originating network equipment of the fixed rate information unit comprised in packet message on the basis of described fiducial time.Wherein, first fixed rate information unit or last fixed rate information unit or a fixed rate information unit of centre during fixed rate information unit is the fixed rate information unit comprised in packet message.Wherein, the originating network equipment reception time of fixed rate information unit refers to that this network equipment receives the fiducial time of a precalculated position information unit of first fixed position information unit or last fixed position information unit or centre in described packet message.
The network equipment realizing differential clock equipment communication that the present invention relates to can also can send packet message and receive the network equipment of packet message as having simultaneously as the recipient network equipment in said system as the originating network equipment in said system as single equipment.
This network equipment includes packet message generation module；When this network equipment is as inchoation equipment, packet message generation module, constitute packet message for the cbr (constant bit rate) business data flow that will receive to send, and in described packet message using the timestamp of this packet message as the difference information being used for identification service frequency information.
The timestamp of packet message specifically can generate in the following ways:
This network equipment also includes that the time occurs module, and packet message generation module includes packet message timestamp signal generating unit.
There is module in the time, for using the work clock of the described network equipment to generate fiducial time.This time generation module can generate PTP form, GPS format, NTP form or the fiducial time of UTC form.This time generation module can also generate the fiducial time of other form of net definitions.
Packet message timestamp signal generating unit, for receiving the time timestamp as this packet message using the originating network equipment of the fixed rate information unit comprised in packet message on the basis of described fiducial time.Wherein, first fixed rate information unit or last fixed rate information unit or a fixed rate information unit of centre during fixed rate information unit is the fixed rate information unit comprised in packet message.The network equipment reception time of fixed rate information unit refers to that this network equipment receives the fiducial time of a precalculated position information unit of first fixed position information unit or last fixed position information unit or centre in described packet message.
This network equipment includes packet message parsing module；When this network equipment is as receiving end equipment, packet message parsing module, it is used for when this network equipment is as the receiving terminal of packet message according to the time-stamp Recognition traffic frequencies information in packet message.
The method realizing differential clock equipment communication in the present invention includes: the cbr (constant bit rate) business data flow that receives is constituted packet message and sends by originating network equipment, and in described packet message using the timestamp of this packet message as the difference information being used for identification service frequency information；Recipient network equipment is according to the time-stamp Recognition traffic frequencies information in packet message.
The timestamp of packet message specifically can generate in the following ways: originating network equipment uses the work clock of described originating network equipment to generate fiducial time；And on the basis of described fiducial time, the originating network equipment of the fixed rate information unit comprised in packet message is received the time timestamp as this packet message.
Wherein, first fixed rate information unit or last fixed rate information unit or a fixed rate information unit of centre during fixed rate information unit is the fixed rate information unit comprised in packet message.The originating network equipment reception time of fixed rate information unit refers to that this network equipment receives the fiducial time of a precalculated position information unit of first fixed position information unit or last fixed position information unit or centre in described packet message.
It should be noted that in the case of not conflicting, the embodiment in the application and the feature in embodiment can mutual combination in any.
Certainly; the present invention also can have other various embodiments; in the case of without departing substantially from present invention spirit and essence thereof; those of ordinary skill in the art can make various corresponding change and deformation according to the present invention, but these change accordingly and deform the protection domain that all should belong to appended claims of the invention.
One of ordinary skill in the art will appreciate that all or part of step in said method can instruct related hardware by program and complete, described program can be stored in computer-readable recording medium, such as read only memory, disk or CD etc..Alternatively, all or part of step of above-described embodiment can also use one or more integrated circuit to realize.Correspondingly, each module/unit in above-described embodiment can realize to use the form of hardware, it would however also be possible to employ the form of software function module realizes.The present invention is not restricted to the combination of the hardware and software of any particular form.
Claims (10)
1. the network equipment realizing differential clock equipment communication, it is characterised in that
The described network equipment includes packet message generation module；
Described packet message generation module, the cbr (constant bit rate) business data flow for receiving constitutes packet report
Literary composition send, and in described packet message using the timestamp of this packet message as being used for identification service frequency
The difference information of information；
Described packet message generation module includes packet message timestamp signal generating unit, during described packet message
Between stab signal generating unit, for the fixed rate information that will comprise in packet message on the basis of fiducial time
The network equipment of unit receives the time timestamp as this packet message.
2. the network equipment as claimed in claim 1, it is characterised in that
The described network equipment includes that the time occurs module,
There is module in the described time, for using the work clock of the described network equipment to generate fiducial time.
3. the network equipment as claimed in claim 2, it is characterised in that
There is module in the described time, be used for generating Precision Time Protocol form, global positioning system form,
NTP form, form world concordant time or the base of network self-defining band unit of time form
Between Zhun Shi.
4. the network equipment as claimed in claim 2, it is characterised in that
It is described that the network equipment reception time of described fixed rate information unit refers to that this network equipment receives
In packet message first fixed position information unit or last fixed position information unit or in
Between fiducial time of a precalculated position information unit.
5. the network equipment as claimed in claim 1, it is characterised in that
The described network equipment includes packet message parsing module；
Described packet message parsing module, for the root when this network equipment is as the receiving terminal of packet message
According to the time-stamp Recognition traffic frequencies information in packet message.
6. the system realizing differential clock equipment communication, it is characterised in that
Described system includes originating network equipment and recipient network equipment；
Described originating network equipment includes packet message generation module；The described receiving terminal network equipment includes point
Group packet parsing module；
Described packet message generation module, the cbr (constant bit rate) business data flow for receiving constitutes packet report
Literary composition send, and in described packet message using the timestamp of this packet message as being used for identification service frequency
The difference information of information；
Described packet message parsing module, for believing according to the time-stamp Recognition traffic frequencies in packet message
Breath；
Described packet message generation module includes packet message timestamp signal generating unit, during described packet message
Between stab signal generating unit, for the fixed rate information that will comprise in packet message on the basis of fiducial time
The originating network equipment of unit receives the time timestamp as this packet message.
7. system as claimed in claim 6, it is characterised in that
Described originating network equipment includes that the time occurs module,
There is module in the described time, during for using the work clock of described originating network equipment to generate benchmark
Between.
8. system as claimed in claim 7, it is characterised in that
The originating network equipment reception time of described fixed rate information unit refers to that this network equipment receives
In described packet message first fixed position information unit or last fixed position information unit or
The fiducial time of a precalculated position information unit in the middle of person.
9. the method realizing differential clock equipment communication, it is characterised in that
The cbr (constant bit rate) business data flow received is constituted packet message and sends by originating network equipment, and in institute
State in packet message and the timestamp of this packet message is believed as the difference being used for identification service frequency information
Breath；
Recipient network equipment is according to the time-stamp Recognition traffic frequencies information in packet message；
The fixed rate letter that described originating network equipment will comprise in packet message on the basis of fiducial time
The originating network equipment of interest statement unit receives the time timestamp as this packet message.
10. method as claimed in claim 9, it is characterised in that
Described originating network equipment uses the work clock of described originating network equipment to generate fiducial time.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110048851.XA CN102655469B (en) | 2011-03-01 | 2011-03-01 | A kind of network equipment realizing differential clock equipment communication and system and method |
| PCT/CN2011/075317 WO2012116526A1 (en) | 2011-03-01 | 2011-06-03 | Network device, system and method for implementing differential clock device communications |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110048851.XA CN102655469B (en) | 2011-03-01 | 2011-03-01 | A kind of network equipment realizing differential clock equipment communication and system and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102655469A CN102655469A (en) | 2012-09-05 |
| CN102655469B true CN102655469B (en) | 2016-08-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110048851.XA Expired - Fee Related CN102655469B (en) | 2011-03-01 | 2011-03-01 | A kind of network equipment realizing differential clock equipment communication and system and method |
Country Status (2)
| Country | Link |
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| CN (1) | CN102655469B (en) |
| WO (1) | WO2012116526A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104796211B (en) * | 2014-01-16 | 2019-01-08 | 中兴通讯股份有限公司 | Adjust differential clocks frequency approach, device, system and intercommunication modifier |
| CN104993900B (en) * | 2015-07-06 | 2018-03-09 | 江苏省电力公司南京供电公司 | A kind of synchronization correction method based on IEEE1588 clock models |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1608112A1 (en) * | 2004-06-14 | 2005-12-21 | Broadcom Corporation | Differential delay compensation and measurement in bonded systems |
| CN101026504A (en) * | 2006-02-24 | 2007-08-29 | 华为技术有限公司 | Network for formance measuring method |
| CN101616164A (en) * | 2009-08-12 | 2009-12-30 | 中兴通讯股份有限公司 | A kind of method and apparatus of message transmission |
| CN101707553A (en) * | 2009-11-10 | 2010-05-12 | 华为技术有限公司 | Method, device and system for transmitting synchronous service data |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101640815B (en) * | 2008-07-29 | 2013-03-20 | 华为技术有限公司 | Remote transmission method, remote transmission device and remote transmission system for PON |
-
2011
- 2011-03-01 CN CN201110048851.XA patent/CN102655469B/en not_active Expired - Fee Related
- 2011-06-03 WO PCT/CN2011/075317 patent/WO2012116526A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1608112A1 (en) * | 2004-06-14 | 2005-12-21 | Broadcom Corporation | Differential delay compensation and measurement in bonded systems |
| CN101026504A (en) * | 2006-02-24 | 2007-08-29 | 华为技术有限公司 | Network for formance measuring method |
| CN101616164A (en) * | 2009-08-12 | 2009-12-30 | 中兴通讯股份有限公司 | A kind of method and apparatus of message transmission |
| CN101707553A (en) * | 2009-11-10 | 2010-05-12 | 华为技术有限公司 | Method, device and system for transmitting synchronous service data |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2012116526A1 (en) | 2012-09-07 |
| CN102655469A (en) | 2012-09-05 |
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