CN106788848A - A kind of Time Synchronization Network network-building method based on E1 - Google Patents
A kind of Time Synchronization Network network-building method based on E1 Download PDFInfo
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- CN106788848A CN106788848A CN201611248218.4A CN201611248218A CN106788848A CN 106788848 A CN106788848 A CN 106788848A CN 201611248218 A CN201611248218 A CN 201611248218A CN 106788848 A CN106788848 A CN 106788848A
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- clock
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- toe4
- time
- building method
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/02—Details
- H04J3/06—Synchronising arrangements
- H04J3/062—Synchronisation of signals having the same nominal but fluctuating bit rates, e.g. using buffers
- H04J3/0623—Synchronous multiplexing systems, e.g. synchronous digital hierarchy/synchronous optical network (SDH/SONET), synchronisation with a pointer process
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/02—Details
- H04J3/06—Synchronising arrangements
- H04J3/0635—Clock or time synchronisation in a network
- H04J3/0685—Clock or time synchronisation in a node; Intranode synchronisation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/02—Details
- H04J3/08—Intermediate station arrangements, e.g. for branching, for tapping-off
- H04J3/085—Intermediate station arrangements, e.g. for branching, for tapping-off for ring networks, e.g. SDH/SONET rings, self-healing rings, meashed SDH/SONET networks
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Computer Hardware Design (AREA)
- Synchronisation In Digital Transmission Systems (AREA)
- Time-Division Multiplex Systems (AREA)
Abstract
The invention discloses a kind of Time Synchronization Network network-building method based on E1, the method makes several carry out cascade network by E1 from clock, encoded and be respectively processed by E1 time slots, temporal information is incorporated into time service equipment the different time-gap of E1, temporal information is obtained from different time-gap by time service equipment respectively, so as to realize precise synchronization network.Network-building method of the invention makes time service equipment and is in logic direct-connected relation by time service equipment, it is possible to reduce synchronizing network cascades the number of plies, solves the problems, such as error accumulation during Time Synchronization Network multi-stage cascade, effectively increases synchronizing network precision.
Description
Technical field
The invention belongs to communication technical field, it is related to time synchronized, especially a kind of Time Synchronization Network group based on E1
Network method.
Background technology
As shown in figure 1, traditional Time Synchronization Network uses principal and subordinate's time synchronizing method mostly, it is same from the 1st scalar time
Step node device to N grades of time synchronization node equipment carries out physical connection by grade.N scalar time synchronization nodes equipment is extremely
When N+1 scalar time synchronization node equipment carries out Time Transmission, certain error can be caused, if concatenation level is too many, by mistake
Difference gradually linear can be accumulated, and when having arrived least significant end time synchronized energy-saving device, the precision of time synchronized can be with the 1st scalar time
Synchronization node equipment differs greatly, so as to have impact on the precision of whole clock synchronization system.
The content of the invention
A kind of shortcoming it is an object of the invention to overcome above-mentioned prior art, there is provided Time Synchronization Network group based on E1
Network method.
The purpose of the present invention is achieved through the following technical solutions：
This Time Synchronization Network network-building method based on E1, makes several carry out cascade network by E1 from clock, leads to
Cross and E1 time slots are encoded and are respectively processed, temporal information is incorporated into time service equipment the different time-gap of E1, is set by time service
Back-up does not obtain temporal information from different time-gap, so as to realize precise synchronization network.Specially：
Including SDH network and some from clock of SDH network are connected to, wherein cascaded by E1 carrying out group from clock
Net, each includes four E1, can make up two mutually incoherent looped networks from clock, and one of them is connected with clock from clock
Source.
Further, it is above-mentioned to be operated under Master or Slave patterns from clock.
Further, when from clock work in Master patterns when, from clock obtain clock source send temporal information and when
Clock information, and temporal information and clock information are incorporated into 30 time slots of E1.
Further, when from clock work in Slave patterns when, from clock parsing E1 assigned timeslots temporal information and clock
Information, used as system time and system clock from clock, the specific time slot of parsing is configured by webmaster.
Further, above-mentioned clock source is given accurate time tranfer by the synchronised clock of DCLS and 2048KHz described
Clock source connection from clock, what is now be connected with clock source serves as Master from clock, this serve as Master from clock general
After 30 time slots all filling time and clock information of E1, E1 is transferred to serve as Slave from clock, each serves as Slave
From clock according to network management configuration obtain assigned timeslot time and clock information, remaining time slot be then forwarded directly to next stage from
In clock.
Beneficial effects of the present invention：
Time Synchronization Network network-building method based on E1 of the invention is by E1 at each from carrying out cascaded series between clock
Net, dry looped network is not desired to all forming two from clock two-by-two, and by precision clock source then are passed through into one from clock the time
Equipment is sent in network；Other obtain clock and time from clockwork from the E1 in this network；So physically N
Level is logically and from clock be direct-connected as Master that so, time service equipment is patrolled with by time service equipment from clock
It is direct-connected relation on volume, it is possible to reduce synchronizing network cascades the number of plies, solves error accumulation during Time Synchronization Network multi-stage cascade
Problem, effectively increases synchronizing network precision.
Brief description of the drawings
Fig. 1 is time synchronized time service schematic network structure in the prior art；
Fig. 2 is networking mode figure of the present invention；
Fig. 3 is network diagram of the invention；
Fig. 4 is logical schematic of the invention.
Specific embodiment
The present invention is based on the Time Synchronization Network network-building method of E1：Several are made to be cascaded by E1 from clock TOE4
Networking, is encoded and is respectively processed by E1 time slots, and temporal information is incorporated into time service equipment the different time-gap of E1, quilt
Time service equipment obtains temporal information from different time-gap respectively, so as to realize precise synchronization network.
The present invention is described in further detail below in conjunction with the accompanying drawings：
Referring to Fig. 2-4：Time Synchronization Network network-building method based on E1 of the invention includes SDH network and is connected to
SDH network it is some from clock TOE4.Referring to Fig. 3, wherein cascaded by E1 carrying out networking from clock TOE4, each is from clock
TOE4 includes four E1, can make up two mutually incoherent looped networks, and one of them is connected with clock source from clock TOE4.It is described
Can be operated under Master or Slave patterns from clock TOE4.
When Master patterns are operated in from clock TOE4, from clock TOE4 obtain clock source send temporal information and when
Clock information, and temporal information and clock information are incorporated into 30 time slots of E1.
When Slave patterns are operated in from clock TOE4, from clock TOE4 parsing E1 assigned timeslots temporal information and when
Clock information, used as system time and system clock from clock TOE4, the specific time slot of parsing is configured by webmaster.
As shown in Figure 3：Clock source of the invention is given accurate time tranfer by the synchronised clock of DCLS and 2048KHz
Be connected with the clock source from clock TOE4, what is be now connected with clock source serves as Master from clock TOE4, and this serves as
After 30 time slots all filling time and clock information from clock TOE4 by E1 of Master, E1 is transferred to and serves as Slave's
From clock TOE4, each serves as the time and the clock information that obtain assigned timeslot according to network management configuration from clock TOE4 of Slave,
Remaining time slot is then forwarded directly to next stage from clock TOE4, so physically N grades (be in from clock TOE4
Slave mode of operations), it is logically and is connected with the direct-connected from clock TOE4 (in Master mode of operations) of clock source
, it is possible to reduce synchronizing network cascades the number of plies, improves synchronizing network precision.
Claims (6)
1. a kind of Time Synchronization Network network-building method based on E1, it is characterised in that make several pass through E1 from clock (TOE4)
Cascade network is carried out, is encoded and is respectively processed by E1 time slots, temporal information is incorporated into E1 not by time service equipment
Same time slot, obtains temporal information, so as to realize precise synchronization network from different time-gap respectively by time service equipment.
2. the Time Synchronization Network network-building method based on E1 according to claim 1, it is characterised in that including SDH network
And be connected to some from clock (TOE4) of SDH network, wherein cascaded by E1 carry out networking from clock (TOE4), each from
Clock (TOE4) include four E1, can make up two mutually incoherent looped networks, one of them from clock (TOE4) be connected with when
Zhong Yuan.
3. the Time Synchronization Network network-building method based on E1 according to claim 1, it is characterised in that described from clock
(TOE4) can be operated under Master or Slave patterns.
4. the Time Synchronization Network network-building method based on E1 according to claim 3, it is characterised in that when from clock
(TOE4) when being operated in Master patterns, temporal information and the clock information that clock source sends are obtained from clock (TOE4), and will
Temporal information and clock information are incorporated into 30 time slots of E1.
5. the Time Synchronization Network network-building method based on E1 according to claim 3, it is characterised in that when from clock
(TOE4) when being operated in Slave patterns, from clock (TOE4) parsing E1 assigned timeslots temporal information and clock information, as from
The system time and system clock of clock (TOE4), the specific time slot of parsing are configured by webmaster.
6. the Time Synchronization Network network-building method based on E1 according to Claims 2 or 3, it is characterised in that the clock
Source by the synchronised clock of DCLS and 2048KHz by accurate time tranfer give that the clock source connects from clock
(TOE4) what is, be now connected with clock source serves as Master from clock (TOE4), and this serves as being incited somebody to action from clock (TOE4) for Master
After 30 time slots all filling time and clock information of E1, E1 is transferred to serve as Slave from clock (TOE4), each serves as
The time and the clock information that obtain assigned timeslot according to network management configuration from clock (TOE4) of Slave, remaining time slot then directly turn
Next stage is dealt into from clock (TOE4).
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| CN201611248218.4A CN106788848B (en) | 2016-12-29 | 2016-12-29 | A kind of Time Synchronization Network network-building method based on E1 |
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| CN201611248218.4A CN106788848B (en) | 2016-12-29 | 2016-12-29 | A kind of Time Synchronization Network network-building method based on E1 |
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| CN106788848A true CN106788848A (en) | 2017-05-31 |
| CN106788848B CN106788848B (en) | 2019-05-03 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101330374A (en) * | 2007-06-18 | 2008-12-24 | 大唐移动通信设备有限公司 | Method and system for synchronizing clock of transmission network as well as subordinate clock side entity |
| CN103442312A (en) * | 2013-09-06 | 2013-12-11 | 国家电网公司 | Intelligent power distribution network time synchronization system and method based on PTN+EPON communication system |
| CN103533633A (en) * | 2013-10-24 | 2014-01-22 | 北京市万格数码通讯科技有限公司 | Simulcasting method of simulcasting system constructed based on E1 link |
| CN104219014A (en) * | 2013-06-03 | 2014-12-17 | 浙江省电力公司 | PTP clock synchronization method based on SDH transmission network |
| CN105187150A (en) * | 2015-09-30 | 2015-12-23 | 南京务本信息科技有限责任公司 | SDH network-based clock synchronizing system |
-
2016
- 2016-12-29 CN CN201611248218.4A patent/CN106788848B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101330374A (en) * | 2007-06-18 | 2008-12-24 | 大唐移动通信设备有限公司 | Method and system for synchronizing clock of transmission network as well as subordinate clock side entity |
| CN104219014A (en) * | 2013-06-03 | 2014-12-17 | 浙江省电力公司 | PTP clock synchronization method based on SDH transmission network |
| CN103442312A (en) * | 2013-09-06 | 2013-12-11 | 国家电网公司 | Intelligent power distribution network time synchronization system and method based on PTN+EPON communication system |
| CN103533633A (en) * | 2013-10-24 | 2014-01-22 | 北京市万格数码通讯科技有限公司 | Simulcasting method of simulcasting system constructed based on E1 link |
| CN105187150A (en) * | 2015-09-30 | 2015-12-23 | 南京务本信息科技有限责任公司 | SDH network-based clock synchronizing system |
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| CN106788848B (en) | 2019-05-03 |
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