CN108513181A - A kind of PON power-economizing methods based on OLT cachings - Google Patents

A kind of PON power-economizing methods based on OLT cachings Download PDF

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CN108513181A
CN108513181A CN201810296902.2A CN201810296902A CN108513181A CN 108513181 A CN108513181 A CN 108513181A CN 201810296902 A CN201810296902 A CN 201810296902A CN 108513181 A CN108513181 A CN 108513181A
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olt
onu
size
buffer
sent
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CN108513181B (en
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沈建华
喻聪
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Nanjing Post and Telecommunication University
Nanjing University of Posts and Telecommunications
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Nanjing Post and Telecommunication University
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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
    • 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
    • H04Q2011/0064—Arbitration, scheduling or medium access control aspects

Abstract

The invention discloses a kind of PON power-economizing methods based on OLT cachings, include the following steps：Step 1：Buffer is set at the ends OLT and sets Dth；Step 2：Inquire polling list polling table；Step 3：Judge whether to reach to ONUiGATE frame times are sent, leapfrog rapid 4 is reached, does not reach leapfrog rapid 2；Step 4：Compare DoltWhether more than Dth, it is more than leapfrog rapid 5, is no more than not transmission data；Step 5：If DoltOr UniMore than UmaxLeapfrog rapid 9, if DoltAnd UniIt is no more than UmaxLeapfrog rapid 6；Step 6：If DoltMore than UniLeapfrog rapid 7；It is not above leapfrog rapid 8；Step 7：ONUiCan be transmitted size of data is Dolt；Step 8：ONUiCan be transmitted size of data is Uni；Step 9：ONUiCan be transmitted size of data is Umax.The present invention has the advantages that energy saving and reduces time delay.

Description

A kind of PON power-economizing methods based on OLT cachings
Technical field
The present invention relates to optic communication, passive optical network, technical field of access networks, and in particular to it is a kind of based on OLT caching PON power-economizing methods.
Background technology
Passive optical network (Passive Optical Network, PON) is the mainstream technology of fiber broadband access, mainly By the optical line terminal (Optical Line Terminal, OLT) of local side, the optical network unit (Optical of user terminal Network Unit, ONU) and Optical Distribution Network (Optical Distribution Network, ODN) composition.Traditional PON system side is distributed in upstream and downstream bandwidth, the less energy consumption problem for considering PON system, and main poll to be used in PON system Mechanism does not support sleep and the standby mode of ONU yet.Therefore, as PON system increasing sharply for scale of deployment causes network The sharp increase of energy consumption, thus from reduce network energy consumption and save network operation cost angle for, PON network it is energy saving As academia and industrial quarters focus of attention.
Some resolution policies have been proposed for PON power-saving technologies in academia.G.984, ITU-T proposes 4 in standard Kind of ONU energy-saving schemes, be referred to as ONU Reductions of Students' Study Load, ONU catnaps, ONU quickly/period sleep and ONU deep sleeps, wherein after three Kind can be described as ONU sleep technologies again.Reduction of Students' Study Load refers to some unnecessary functions and service when an optical link is in full speed running It can disconnect.Sleep refers to that ONU can be made to be transferred to sleep state in the business free time, when having data to need transmission/reception It wakes up.For G.984 scheme, YYan et al. proposes a kind of improvement energy-saving scheme, i.e. uplink central dispatching (Upstream Centric Scheduling, UCS) mechanism.UCS mechanism provides that downstream data traffic must wait until the ascending time slot that ONU is authorized It can just be transmitted, therefore UCS energy-saving effects are preferable, but the disadvantage is that larger downlink time delay can be introduced, influence the clothes of system Business quality.Dung Pham Van et al. propose another suspend mode perception dynamic bandwidth allocation algorithm (Sleep-aware Dynamic Bandwidth Allocation, SDBA), by changing the polling cycle of SDBA come extend as far as possible ONU suspend mode Time needs according to most stringent of requirement in different types of business the disadvantage is that the setting of polling cycle is complicated to all business It is polled the distribution in period.Dung Pham Van et al. propose the suspend mode perception dynamic bandwidth of enhancing on the basis of SDBA Allocation algorithm (Advanced Sleep-aware Dynamic Bandwidth allocation, ASDBA), ASDBA is further Using the time of transmission control frame, change the dispatching sequence of the energy saving Dynamic Bandwidth Allocation of tradition, although can effectively reduce ONU's Energy expenditure, but the algorithm cannot accurately calculate the size of bandwidth needed for business, not efficiently use the information of REPORT frames.It is existing Have introduced merely in passive optical network ONU sleep method exist cannot solve the disadvantage that simultaneously it is energy saving with reduce time delay.
Invention content
The object of the present invention is to provide a kind of while reducing the energy consumption of PON system, and can effectively reduce lower line number According to the PON power-economizing methods based on OLT cachings of service delay.
To achieve the above object, present invention employs following technical solutions：A kind of PON sections based on OLT cachings Energy method, includes the following steps：
Step (1)：One buffer first is set at the ends OLT, while a threshold value is set for buffer, OLT can be real When detect whether the size of data cached business in buffer has been more than threshold value；
Step (2)：OLT inquires polling list polling table；
Step (3)：Judge whether to reach to ONUiThe time for sending GATE frames, if reached to ONUiSend GATE frames Time thens follow the steps (4), if do not reached to ONUiThe time for sending GATE frames then redirects and executes step (2)；
Step (4)：Whether the size that OLT detects downstream data traffic in buffer at this time is more than threshold value, if caching In device the size of downstream data traffic be more than threshold value, then follow the steps (5), if in buffer downstream data traffic size It is not above threshold value, OLT is in ONUiMandate time slot in do not send downstream data traffic；
Step (5)：Judge the size or ONU of downstream data traffic in the buffer of OLTiThe uplink sent to OLT applications Whether the size of data service is more than OLT regulations ONUiIn the maximum value for authorizing transmission data business in time slot, if OLT's is slow The size or ONU of downstream data traffic in storageiThe size of the upstream data service sent to OLT applications is more than that OLT provides ONUi In the maximum value for authorizing transmission data business in time slot, then redirects and execute step (9), if downlink data in the buffer of OLT The size and ONU of businessiThe size of the upstream data service sent to OLT applications is not above OLT regulations ONUiWhen authorizing The maximum value of transmission data business in gap, thens follow the steps (6)；
Step (6)：Judge the size of downstream data traffic in the buffer of OLT whether more than ONUiApply sending to OLT Upstream data service size, if the size of downstream data traffic is more than ONU in the buffer of OLTiApply sending to OLT Upstream data service size, then follow the steps (7)；If the size of downstream data traffic is not super in the buffer of OLT Cross ONUiThe size of the upstream data service sent to OLT applications, then redirect and execute step (8)；
Step (7)：OLT is to ONUiSend GATE frames, ONUiIt is authorizing the data service size that can be transmitted in time slot The size of downlink data in the buffer of OLT；
Step (8)：OLT is to ONUiSend GATE frames, ONUiIt is authorizing the data service size that can be transmitted in time slot ONUiThe size of the upstream data sent to OLT applications；
Step (9)：OLT is to ONUiSend GATE frames, ONUiIt is authorizing the data service size that can be transmitted in time slot OLT provides ONUiIn the maximum value for authorizing transmission data in time slot.
Through the implementation of the above technical solution, the beneficial effects of the invention are as follows：Can ensure OLT ONU mandate time slot It is interior, send all downstream data traffics so that the sleeping time of ONU maximizes, and is reducing the same of the energy consumption of PON system When, and the time delay of downstream data traffic can be reduced, the service quality of PON system is improved, network performance is optimized.
Description of the drawings
Fig. 1 is a kind of flow diagram of PON power-economizing methods based on OLT cachings of the present invention.
Fig. 2 be it is of the present invention it is a kind of based on OLT caching PON power-economizing methods in sequence diagram from OLT to ONU polls.
Specific implementation mode
The invention will be further described in the following with reference to the drawings and specific embodiments.
As shown in Figure 1 and Figure 2, a kind of PON power-economizing methods based on OLT cachings, include the following steps：
Step (1)：One buffer first is set at the ends OLT, while a threshold value is set for buffer, OLT can be real When detect whether the size of data cached business in buffer has been more than threshold value；
Step (2)：OLT inquires polling list polling table；
Step (3)：Judge whether to reach to ONUiThe time for sending GATE frames, if reached to ONUiSend GATE frames Time thens follow the steps (4), if do not reached to ONUiThe time for sending GATE frames then redirects and executes step (2)；
Step (4)：Whether the size that OLT detects downstream data traffic in buffer at this time is more than threshold value, if caching The size of downlink data is more than threshold value in device, (5) is thened follow the steps, if there is no the size of downstream data traffic in buffer More than threshold value, OLT is in ONUiMandate time slot in do not send downstream data traffic；
Step (5)：Judge the size or ONU of downstream data traffic in the buffer of OLTiThe uplink sent to OLT applications Whether the size of data service is more than OLT regulations ONUiIn the maximum value for authorizing transmission data business in time slot, if OLT's is slow The size or ONU of downstream data traffic in storageiThe size of the upstream data service sent to OLT applications is more than that OLT provides ONUi The maximum value of transmission data business in time slot is being authorized to be more than then to redirect to execute step (9), if downlink in the buffer of OLT The size and ONU of data serviceiThe size of the upstream data service sent to OLT applications is not above OLT regulations ONUiIt is awarding Temporary in gap transmission data business maximum value, then follow the steps (6)；
Step (6)：Judge the size of downstream data traffic in the buffer of OLT whether more than ONUiApply sending to OLT Upstream data service size, if the size of downstream data traffic is more than ONU in the buffer of OLTiApply sending to OLT Upstream data service size, then follow the steps (7)；If the size of downstream data traffic is not super in the buffer of OLT Cross ONUiThe size of the upstream data service sent to OLT applications, then redirect and execute step (8)；
Step (7)：OLT is to ONUiSend GATE frames, ONUiIt is authorizing the data service size that can be transmitted in time slot The size of downstream data traffic in the buffer of OLT；
Step (8)：OLT is to ONUiSend GATE frames, ONUiIt is authorizing the data service size that can be transmitted in time slot ONUiThe size of the upstream data service sent to OLT applications；
Step (9)：OLT is to ONUiSend GATE frames, ONUiIt is authorizing the data service size that can be transmitted in time slot OLT provides ONUiIn the maximum value for authorizing transmission data business in time slot.
In the present embodiment, D is definedthFor threshold value, DoltFor the size of downstream data traffic, U in the buffer of OLTni For ONUiThe size of the upstream data service sent to OLT applications, UmaxONU is provided for OLTiAuthorizing transmission data industry in time slot The maximum value of business；And assume that the PON system has 3 ONU, UmaxEach ONU is allowed to authorize in time slot for OLT in polling cycle The maximum value of upstream data service is sent, is met | Dth|<|Umax|；With polling cycle Tc1For, it is each to describe OLT polls ONU, and to be followed successively by the process that each ONU authorizes time slot, be as follows：
In t0At the moment, OLT is to ONU1GATE frames are sent, to ONU1Mandate time slot is t0To t1, authorizing ONU in time slot1To The upstream data size that OLT is sent is U11；At the same time, OLT monitors to issue ONU in buffer1Downstream data traffic it is big It is small to be not above threshold value Dth, therefore not to ONU1Send downlink data；ONU1After receiving GATE frames, closes receive immediately Machine, in t1Moment, upstream data are sent, ONU1Into sleep pattern.
In t1Moment, OLT monitor the size D of downstream data traffic in bufferoltMore than threshold value Dth, while by Dolt With ONU in REPORT frames2Apply for the size U of transmission data to OLT12It compares, such as | U12|>|Dolt|, then at this time OLT to ONU2 GATE frames are sent, mandate time slot is t1To t2, authorizing ONU in time slot2The upstream data size sent to OLT is U12, OLT to ONU2The downlink data size of transmission is Dolt。ONU2After having received downlink data, receiver is closed immediately, until t2When It carves, upstream data is sent, ONU2Into sleep pattern.
In t2Moment, OLT monitor the size D of downstream data traffic in bufferoltMore than threshold value Dth, while DoltWith ONU in REPORT frames3Apply for the size U of transmission data to OLT13It compares, such as | U13|<|Dolt|, then OLT is to ONU3It sends GATE frames, mandate time slot are t2To t4, authorizing ONU in time slot3The upstream data size sent to OLT is U13, OLT is to ONU3 The downlink data size of transmission is Dolt, ONU3After having sent upstream data, transmitter off immediately, until t4Moment, under Row data receive, ONU3Into sleep pattern.One polling cycle terminates, it is contemplated that is transformed into Working mould by sleep pattern Formula needs recovered clock and synchronizing network, therefore ONU3Internal timer is needed in t3Moment is by ONU1It wakes up.
It is an advantage of the invention that：It can ensure that OLT in the mandate time slot of ONU, has sent all downstream data traffics, So that ONU sleeping time maximize, reduce PON system energy consumption while, and can reduce downstream data traffic when Prolong, improves the service quality of PON system, optimize network performance.

Claims (1)

1. a kind of PON power-economizing methods based on OLT cachings, it is characterised in that：Include the following steps：
Step (1)：One buffer first is set at the ends OLT, while a threshold value is set for buffer, OLT can be examined in real time Whether the size for measuring data cached business in buffer has been more than threshold value；
Step (2)：OLT inquires polling list polling table；
Step (3)：Judge whether to reach to ONUiThe time for sending GATE frames, if reached to ONUiThe time of GATE frames is sent, (4) are thened follow the steps, if do not reached to ONUiThe time for sending GATE frames then redirects and executes step (2)；
Step (4)：Whether the size that OLT detects downstream data traffic in buffer at this time is more than threshold value, if in buffer The size of downstream data traffic is more than threshold value, (5) is thened follow the steps, if there is no the size of downstream data traffic in buffer More than threshold value, OLT is in ONUiMandate time slot in do not send downstream data traffic；
Step (5)：Judge the size or ONU of downstream data traffic in the buffer of OLTiThe upstream data industry sent to OLT applications Whether the size of business is more than OLT regulations ONUiIn the maximum value for authorizing transmission data business in time slot, if in the buffer of OLT The size or ONU of downstream data trafficiThe size of the upstream data service sent to OLT applications is more than that OLT provides ONUiIt is authorizing The maximum value of transmission data business in time slot then redirects and executes step (9), if downstream data traffic in the buffer of OLT Size and ONUiThe size of the upstream data service sent to OLT applications is not above OLT regulations ONUiIt is sent out authorizing in time slot The maximum value for sending data service thens follow the steps (6)；
Step (6)：Judge the size of downstream data traffic in the buffer of OLT whether more than ONUiThe uplink sent to OLT applications The size of data service, if the size of downstream data traffic is more than ONU in the buffer of OLTiThe uplink sent to OLT applications The size of data service thens follow the steps (7)；If the size of downstream data traffic is not above ONU in the buffer of OLTi The size of the upstream data service sent to OLT applications, then redirect and execute step (8)；
Step (7)：OLT is to ONUiSend GATE frames, ONUiIt is OLT's authorizing the data service size that can be transmitted in time slot The size of downlink data in buffer；
Step (8)：OLT is to ONUiSend GATE frames, ONUiIt is ONU authorizing the data service size that can be transmitted in time slotiTo The size for the upstream data that OLT applications are sent；
Step (9)：OLT is to ONUiSend GATE frames, ONUiIt is advised for OLT authorizing the data service size that can be transmitted in time slot Determine ONUiIn the maximum value for authorizing transmission data in time slot.
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111954098A (en) * 2019-05-14 2020-11-17 中国移动通信有限公司研究院 Equipment identification method, device, equipment and computer readable storage medium

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101197627A (en) * 2007-12-24 2008-06-11 中兴通讯股份有限公司 Energy-saving operation method and system for passive optical network service
CN103347221A (en) * 2013-07-04 2013-10-09 北京邮电大学 EPON dynamic energy-saving method based on threshold value comparison
CN103595561A (en) * 2013-11-06 2014-02-19 电子科技大学 Method for saving energy of broadband access network
CN104053077A (en) * 2014-06-23 2014-09-17 重庆邮电大学 Passive optical network energy saving method based on ONU modularization
US20150365192A1 (en) * 2014-06-16 2015-12-17 Electronics And Telecommunications Research Institute Method of tuning wavelength of tunable optical network unit (onu) in time and wavelength division multiplexing-passive optical network (twdm-pon)

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101197627A (en) * 2007-12-24 2008-06-11 中兴通讯股份有限公司 Energy-saving operation method and system for passive optical network service
CN103347221A (en) * 2013-07-04 2013-10-09 北京邮电大学 EPON dynamic energy-saving method based on threshold value comparison
CN103595561A (en) * 2013-11-06 2014-02-19 电子科技大学 Method for saving energy of broadband access network
US20150365192A1 (en) * 2014-06-16 2015-12-17 Electronics And Telecommunications Research Institute Method of tuning wavelength of tunable optical network unit (onu) in time and wavelength division multiplexing-passive optical network (twdm-pon)
CN104053077A (en) * 2014-06-23 2014-09-17 重庆邮电大学 Passive optical network energy saving method based on ONU modularization

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
ALAELDDIN FUAD YOUSIF MOHAMMED,ETC: "Early wake-up decision algorithm for ONUs in TDM-PONs with sleep mode", 《IEEE》 *
赵继军等: "以太网无源光网络ONU休眠节能技术", 《计算机应用研究》 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111954098A (en) * 2019-05-14 2020-11-17 中国移动通信有限公司研究院 Equipment identification method, device, equipment and computer readable storage medium

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