CN102176682A - Ranging method, ranging device and passive optical network - Google Patents
Ranging method, ranging device and passive optical network Download PDFInfo
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- CN102176682A CN102176682A CN2011100341981A CN201110034198A CN102176682A CN 102176682 A CN102176682 A CN 102176682A CN 2011100341981 A CN2011100341981 A CN 2011100341981A CN 201110034198 A CN201110034198 A CN 201110034198A CN 102176682 A CN102176682 A CN 102176682A
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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
- H04J3/0635—Clock or time synchronisation in a network
- H04J3/0682—Clock or time synchronisation in a network by delay compensation, e.g. by compensation of propagation delay or variations thereof, by ranging
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
- H04Q11/0062—Network aspects
- H04Q11/0067—Provisions for optical access or distribution networks, e.g. Gigabit Ethernet Passive Optical Network (GE-PON), ATM-based Passive Optical Network (A-PON), PON-Ring
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
- H04Q11/0062—Network aspects
- H04Q2011/0079—Operation or maintenance aspects
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
- H04Q11/0062—Network aspects
- H04Q2011/0088—Signalling aspects
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Abstract
The invention provides a ranging method, a ranging device and a passive optical network. The method comprises the following steps that: an optical line terminal (OLT) receives one or more serial number (SN) messages sent by one or more optical network units (ONUs); the OLT respectively determines round trip delays (RTDs) of the one or more ONUs by using random time delays carried in the one or more SN messages; and the OLT respectively determines equalized time delays (EqDs) of the one or more ONUs by using the one or more RTDs. By the invention, the ranging efficiency is improved.
Description
Technical field
The present invention relates to the communications field, in particular to a kind of distance-finding method, device and EPON.
Background technology
Characteristics such as the low cost of EPON (PON, Passive Optical Network), high power capacity, easy care have made it become the desirable broadband access method of FTTx.Because the passive tapping structure that PON adopts time division multiple access to insert, a plurality of users share same equipment, same optical cable and same optical branching device, different optical network unit (ONU, Optical Network Unit) distance light road terminal (OLT, Optical Line Termination) distance has nothing in common with each other, and the conflict of uplink service will occur at OLT.Therefore mechanism of needs is made accurate regulation to the time of the transmission data of each ONU.The mechanism of this introducing find range exactly (Ranging).
Present EPON (Passive Optical Network, abbreviate PON as) or gigabit passive optical network (GigabitPassive Optical Network, abbreviate GPON as) in, optical line terminal (Optical Line Terminal, abbreviate OLT as) to optical network unit (Optical Network Unit, abbreviate ONU as) when finding range, once find range at an ONU at every turn, need obtain the SN (SERIAL NUMBER) of ONU earlier, then ONU is found range, in the time of range finding, once can only survey an ONU, under a lot of situation of ONU, range finding efficient is lower.
At the lower problem of the efficient of distance-finding method in the correlation technique, effective solution is not proposed as yet at present.
Summary of the invention
Main purpose of the present invention is to provide a kind of distance-finding method, device and EPON, with the relatively lower problem of efficient that solves distance-finding method in the above-mentioned correlation technique at least.
According to an aspect of the present invention, provide a kind of distance-finding method, be applied to EPON.
Distance-finding method according to the present invention comprises: OLT receives the one or more string SN message that send from one or more ONU; OLT uses the random delay that carries in one or more SN message respectively, determines the round-trip delay (RTD) of one or more ONU; OLT uses one or more RTD respectively, determines the balanced time delay (EqD) of one or more ONU.
Further, OLT uses the random delay that carries in one or more SN message respectively, determines that the round-trip delay RTD of one or more ONU comprises: OLT uses following formula to determine RTD:RTD=2
*The transmission time+ONU response time+preassigned delay+ random delay+start time, wherein, transmission time is determined according to the fiber optic network at OLT place, preassigned delay is the specific common value that the definite ONU of system postpones, the ONU response time is the time that the ONU of default carries out operation response, start time is the time that the ONU of OLT setting sends uplink frame, and random delay is the random delay of ONU transmit frame.
Further, OLT uses one or more RTD respectively, the balanced time delay EqD that determines one or more ONU comprises: OLT uses following formula to determine the EqD:EqD=Teqd-RTD of one or more OLT respectively, and wherein, Teqd is the balanced time delay of zero distance that system is provided with.
Further, SN message is carried random delay on its 11st and 12 byte.
According to a further aspect in the invention, also provide a kind of distance-finding method, be applied to EPON.
Distance-finding method according to the present invention comprises: one or more ONU carry random delay in SN message; One or more ONU send SN message to optical line terminal OLT, and wherein, SN message is used for OLT and determines balanced time delay EqD.
In accordance with a further aspect of the present invention, provide a kind of range unit, be applied to OLT.
Range unit according to the present invention comprises: receiver module is used to receive the one or more string SN message that send from one or more optical network unit ONU; First determination module is used for the random delay that uses one or more SN message to carry respectively, determines the round-trip delay (RTD) of one or more ONU; Second determination module is used for using one or more RTD respectively, determines the balanced time delay (EqD) of one or more ONU.
Further, first determination module is used to use following formula to determine RTD:RTD=2
*The transmission time+ONU response time+preassigned delay+ random delay+start time, wherein, transmission time is determined according to the fiber optic network at OLT place, preassigned delay is the specific common value that the definite ONU of system postpones, the ONU response time is the time that the ONU of default carries out operation response, start time is the time that the ONU of OLT setting sends uplink frame, and random delay is the random delay of ONU transmit frame.
Further, second determination module is used to use following formula to determine the EqD:EqD=Teqd-RTD of one or more OLT respectively, and wherein, Teqd is the balanced time delay of zero distance that system is provided with.
According to another aspect of the invention, provide a kind of range unit, be applied to ONU.
Range unit according to the present invention comprises: processing module is used for carrying random delay in SN message; Sending module is used for sending SN message to optical line terminal OLT, and wherein, SN message is used for OLT and determines balanced time delay (EqD).
One side more of the present invention also provides a kind of EPON.
EPON according to the present invention comprises: above-mentioned range unit (being applied to OLT) and above-mentioned range unit (being applied to ONU).
By the present invention, the random delay that carries in the SN message that the one or more ONU that adopt the OLT use to receive send, determine RTD and EqD, having solved once can only find range to an ONU in the correlation technique causes the lower problem of efficient, and then has reached the effect that has improved range finding efficient.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is the first pass figure according to the distance-finding method of the embodiment of the invention;
Fig. 2 is second flow chart according to the distance-finding method of the embodiment of the invention;
Fig. 3 is first structured flowchart according to the range unit of the embodiment of the invention;
Fig. 4 is second structured flowchart according to the distance-finding method of the embodiment of the invention; And
Fig. 5 is the structured flowchart according to the EPON of the embodiment of the invention.
Embodiment
Below with reference to the accompanying drawings and in conjunction with the embodiments, describe the present invention in detail.
Hereinafter will describe the present invention with reference to the accompanying drawings and in conjunction with the embodiments in detail.Need to prove that under the situation of not conflicting, embodiment and the feature among the embodiment among the application can make up mutually.
Present embodiment provides a kind of distance-finding method, is applied to EPON, and Fig. 1 is the flow chart according to the distance-finding method of the embodiment of the invention, and as shown in Figure 1, this method comprises:
Step S102:OLT receives the one or more string SN message that send from one or more optical network unit ONU.
Step S104:OLT uses the random delay that carries in one or more SN message respectively, determines the RTD of one or more ONU.
Step S106:OLT uses one or more RTD respectively, determines the EqD of one or more ONU.
Pass through above-mentioned steps, OLT uses the random delay that carries in the SN message of the one or more ONU transmissions that receive, determine RTD and EqD, having solved once can only find range to an ONU in the correlation technique causes efficient problem relatively, thereby has improved the effect of range finding.
Preferably, below of step S104 is preferred embodiment described.OLT uses following formula to determine RTD:RTD=2
*The transmission time+ONU response time+preassigned delay+ random delay+start time, wherein, transmission time is determined according to the fiber optic network at OLT place, preassigned delay is the specific common value that the definite ONU of system postpones, the ONU response time is the time that the ONU of default carries out operation response, start time is the time that the ONU of OLT setting sends uplink frame, and random delay is the random delay of ONU transmit frame.By the preferred embodiment, improved the accuracy rate of definite RTD.
Preferably, below of step S106 is preferred embodiment described.OLT uses following formula to determine the EqD:EqD=Teqd-RTD of one or more OLT respectively, and wherein, Teqd is the balanced time delay of zero distance that system is provided with.By the preferred embodiment, improved the accuracy rate of definite EqD.
Preferably, SN message is carried random delay on its 11st and 12 byte.By the preferred embodiment, use existing signaling to carry random delay, reduced signaling traffic load.
Present embodiment provides a kind of distance-finding method, is applied to EPON, and Fig. 2 is second flow chart according to the distance-finding method of the embodiment of the invention, and as shown in Figure 2, this method comprises:
Step S202: one or more ONU carry random delay in SN message;
Step S204: one or more ONU send SN message to OLT, and wherein, SN message is used for OLT and determines balanced time delay EqD.
Pass through the preferred embodiment, one or more ONU send the SN message that carries random delay to OLT, this SN message is used for OLT and determines EqD, and having solved once can only find range to an ONU in the correlation technique causes the lower problem of efficient, thereby has improved the efficient of range finding.
Embodiment one
Present embodiment provides a kind of distance-finding method, is applied in the EPON, and present embodiment combines the foregoing description and preferred implementation wherein.This method comprises the steps:
Step 1:ONU sends the SN message that carries random delay to OLT.
Step 2:, after obtaining the process that ONU is SN, just can calculate the EQD value of ONU in the OLT side.Computational methods are as follows:
EqD(n)＝Teqd-RTD(n)
Wherein Teqd is the balanced time delay of 0 distance, and RTD is round-trip delay (Round trip delay).
RTD=comprise 2 times the transmission time+ONU response time+preassigned delay+random delay+start time.
In the present embodiment, the SN message format is as shown in table 1 below:
Table 1SN message format signal table
By this preferred embodiment, can simplify the activation process of ONU, improve the efficient of range finding.
Present embodiment provides a kind of range unit, is applied to OLT, and Fig. 3 is first structured flowchart according to the range unit of the embodiment of the invention, as shown in Figure 3, this device comprises: receiver module 42, the first determination modules 44, second determination module 46 is elaborated to said structure below.
Receiver module 42 is used to receive the one or more string SN message that send from one or more optical network unit ONU; First determination module 44 is connected to receiver module 42, and the random delay that the one or more SN message that are used for using receiver module 42 to receive are respectively carried is determined the round-trip delay RTD of one or more ONU; Second determination module 46 is connected to first determination module 44, and the one or more RTD that are used for using respectively first determination module 44 to determine determine the balanced time delay EqD of one or more ONU.
Preferably, first determination module is used to use following formula to determine RTD:RTD=2
*The transmission time+ONU response time+preassigned delay+ random delay+start time, wherein, transmission time is determined according to the fiber optic network at OLT place, preassigned delay is the specific common value that the definite ONU of system postpones, the ONU response time is the time that the ONU of default carries out operation response, start time is the time that the ONU of OLT setting sends uplink frame, and random delay is the random delay of ONU transmit frame.
Preferably, second determination module is used to use following formula to determine the EqD:EqD=Teqd-RTD of one or more OLT respectively, and wherein, Teqd is the balanced time delay of zero distance that system is provided with.
Present embodiment provides a kind of range unit, is applied to ONU, and Fig. 4 is second structured flowchart according to the distance-finding method of the embodiment of the invention, and as shown in Figure 4, this device comprises: processing module 52, sending module 54 is elaborated to said structure below.
Processing module 52 is used for carrying random delay in string SN message; Sending module 54 is connected to processing module 52, is used for sending the SN message that processing module 52 is handled to optical line terminal OLT, and wherein, SN message is used for OLT and determines balanced time delay EqD.
Present embodiment provides a kind of EPON, Fig. 5 is the structured flowchart according to the EPON of the embodiment of the invention, as shown in Figure 5, this EPON comprises: range unit (being applied to OLT) 2 and range unit (being applied to ONU) 4, the concrete structure of range unit (being applied to OLT) 2 as shown in Figure 3, the concrete structure of range unit (being applied to ONU) 4 does not repeat them here as shown in Figure 4.
Pass through the foregoing description, a kind of distance-finding method, device and EPON are provided, use the random delay that carries in the SN message of the one or more ONU transmissions that receive by OLT, determine RTD and EqD, having solved once can only find range to an ONU in the correlation technique causes efficient problem relatively, thereby has improved the effect of range finding.
Obviously, those skilled in the art should be understood that, above-mentioned each module of the present invention or each step can realize with the general calculation device, they can concentrate on the single calculation element, perhaps be distributed on the network that a plurality of calculation element forms, alternatively, they can be realized with the executable program code of calculation element, carry out by calculation element thereby they can be stored in the storage device, perhaps they are made into each integrated circuit modules respectively, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a distance-finding method is applied to EPON, it is characterized in that, comprising:
Optical line terminal OLT receives the one or more string SN message that send from one or more optical network unit ONU;
Described OLT uses the random delay that carries in described one or more SN message respectively, determines the round-trip delay RTD of described one or more ONU;
Described OLT uses described one or more RTD respectively, determines the balanced time delay EqD of described one or more ONU.
2. method according to claim 1 is characterized in that, described OLT uses the random delay that carries in described one or more SN message respectively, determines that the round-trip delay RTD of described one or more ONU comprises:
Described OLT uses following formula to determine described RTD:
RTD=2
*The transmission time+ONU response time+preassigned delay+ random delay+start time, wherein, the described transmission time is determined according to the fiber optic network at described OLT place, preassigned delay is the specific common value that the definite ONU of system postpones, the ONU response time is the time that the ONU of default carries out operation response, start time is the time that the ONU of OLT setting sends uplink frame, and random delay is the random delay of ONU transmit frame.
3. method according to claim 1 is characterized in that, described OLT uses described one or more RTD respectively, determines that the balanced time delay EqD of described one or more ONU comprises:
Described OLT uses following formula to determine the described EqD of described one or more OLT respectively:
EqD=Teqd-RTD, wherein, Teqd is the balanced time delay of zero distance that system is provided with.
4. according to each described method in the claim 1 to 3, it is characterized in that described SN message is carried described random delay on its 11st and 12 byte.
5. a distance-finding method is applied to EPON, it is characterized in that, comprising:
One or more ONU carry random delay in string SN message;
Described one or more ONU sends described SN message to optical line terminal OLT, and wherein, described SN message is used for described OLT and determines balanced time delay EqD.
6. a range unit is applied to optical line terminal OLT, it is characterized in that, comprising:
Receiver module is used to receive the one or more string SN message that send from one or more optical network unit ONU;
First determination module is used for the random delay that uses described one or more SN message to carry respectively, determines the round-trip delay RTD of described one or more ONU;
Second determination module is used for using respectively described one or more RTD, determines the balanced time delay EqD of described one or more ONU.
7. device according to claim 6 is characterized in that,
Described first determination module is used to use following formula to determine described RTD:
RTD=2
*The transmission time+ONU response time+preassigned delay+ random delay+start time, wherein, the described transmission time is determined according to the fiber optic network at described OLT place, preassigned delay is the specific common value that the definite ONU of system postpones, the ONU response time is the time that the ONU of default carries out operation response, start time is the time that the ONU of OLT setting sends uplink frame, and random delay is the random delay of ONU transmit frame.
8. device according to claim 6 is characterized in that,
Described second determination module is used to use following formula to determine the described EqD:EqD=Teqd-RTD of described one or more OLT respectively, and wherein, Teqd is the balanced time delay of zero distance that system is provided with.
9. a range unit is applied to optical network unit ONU, it is characterized in that, comprising:
Processing module is used for carrying random delay in string SN message;
Sending module is used for sending described SN message to optical line terminal OLT, and wherein, described SN message is used for described OLT and determines balanced time delay EqD.
10. an EPON is characterized in that, comprising:
According to each described range unit and range unit according to claim 9 among the claim 6-8.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110034198.1A CN102176682B (en) | 2011-01-31 | 2011-01-31 | Ranging method, ranging device and passive optical network |
| PCT/CN2011/075973 WO2012103695A1 (en) | 2011-01-31 | 2011-06-20 | Method and device for ranging and passive optical network |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110034198.1A CN102176682B (en) | 2011-01-31 | 2011-01-31 | Ranging method, ranging device and passive optical network |
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| CN102176682A true CN102176682A (en) | 2011-09-07 |
| CN102176682B CN102176682B (en) | 2015-05-06 |
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| WO (1) | WO2012103695A1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8971699B2 (en) | 2012-12-07 | 2015-03-03 | Industrial Technology Research Institute | Optical network failure recovery method |
| CN104702350A (en) * | 2015-03-31 | 2015-06-10 | 中国航空无线电电子研究所 | Radio distance measuring system of aerial radio communication system |
| WO2015154429A1 (en) * | 2014-08-08 | 2015-10-15 | 中兴通讯股份有限公司 | Random time delay compensation realization method for hardware and device thereof |
| CN104734772B (en) * | 2015-04-03 | 2017-08-01 | 烽火通信科技股份有限公司 | EPON backbone's optical link protection system and its method for obtaining balanced time delay |
| CN111866627A (en) * | 2020-07-20 | 2020-10-30 | 芯河半导体科技(无锡)有限公司 | Method and system for GPON accurate ranging |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20050003642A (en) * | 2003-07-03 | 2005-01-12 | 삼성전자주식회사 | Method for ONU Activation in Gigabit-capable PON |
| CN101192885A (en) * | 2006-11-27 | 2008-06-04 | 华为技术有限公司 | A distance measuring method and system for passive optical network |
| KR20090083634A (en) * | 2008-01-30 | 2009-08-04 | 금오공과대학교 산학협력단 | Enhanced onu activation methods for the g-pon based on g.984.3 |
| CN102075820A (en) * | 2009-11-23 | 2011-05-25 | 中兴通讯股份有限公司 | Method and device for measuring distance in passive optical network |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101232693A (en) * | 2007-01-22 | 2008-07-30 | 华为技术有限公司 | System, equipment and method for measuring reciprocation time delay |
-
2011
- 2011-01-31 CN CN201110034198.1A patent/CN102176682B/en not_active Expired - Fee Related
- 2011-06-20 WO PCT/CN2011/075973 patent/WO2012103695A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20050003642A (en) * | 2003-07-03 | 2005-01-12 | 삼성전자주식회사 | Method for ONU Activation in Gigabit-capable PON |
| CN101192885A (en) * | 2006-11-27 | 2008-06-04 | 华为技术有限公司 | A distance measuring method and system for passive optical network |
| KR20090083634A (en) * | 2008-01-30 | 2009-08-04 | 금오공과대학교 산학협력단 | Enhanced onu activation methods for the g-pon based on g.984.3 |
| CN102075820A (en) * | 2009-11-23 | 2011-05-25 | 中兴通讯股份有限公司 | Method and device for measuring distance in passive optical network |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8971699B2 (en) | 2012-12-07 | 2015-03-03 | Industrial Technology Research Institute | Optical network failure recovery method |
| TWI487304B (en) * | 2012-12-07 | 2015-06-01 | Ind Tech Res Inst | Optical network failure recovery method |
| WO2015154429A1 (en) * | 2014-08-08 | 2015-10-15 | 中兴通讯股份有限公司 | Random time delay compensation realization method for hardware and device thereof |
| CN105338431A (en) * | 2014-08-08 | 2016-02-17 | 中兴通讯股份有限公司 | Hardware random delay compensation implementing method and hardware random delay compensation implementing device |
| CN104702350A (en) * | 2015-03-31 | 2015-06-10 | 中国航空无线电电子研究所 | Radio distance measuring system of aerial radio communication system |
| CN104702350B (en) * | 2015-03-31 | 2017-03-08 | 中国航空无线电电子研究所 | A kind of radio ranging system in aviation wireless communication system |
| CN104734772B (en) * | 2015-04-03 | 2017-08-01 | 烽火通信科技股份有限公司 | EPON backbone's optical link protection system and its method for obtaining balanced time delay |
| CN111866627A (en) * | 2020-07-20 | 2020-10-30 | 芯河半导体科技(无锡)有限公司 | Method and system for GPON accurate ranging |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102176682B (en) | 2015-05-06 |
| WO2012103695A1 (en) | 2012-08-09 |
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