onu造句
- In the end , the pcb design and implementation of olt and onu are submit
最后,給出了olt和onu的pcb設計與實現(xiàn)。 - Onu optical network unit
光纖網(wǎng)路單體 - Onu : optical network unit
光纖網(wǎng)絡單元 - The passivated catalyst was tested or characterized by onu autothermal apparatus , xrd , dta and bet
對鈍化后的催化劑進行了onu自熱測試和xrd 、 dta 、 bet等表征。 - Two groups of onus report and grant in turn , as the network load changes , olt converts the way of granting every onu
然后根據(jù)運營商的實際需要,提出另一種基于服務等級協(xié)議( sla )的算法sb - dba 。 - Only when olt receives the first few bits of the uplink burst of onu and achieves the bit synchronization can the onu signal be restored
Olt必須在收到onu上行突發(fā)的前幾個比特內(nèi)實現(xiàn)比特同步，才能恢復onu的信號。 - Since the transmission loss from each onu to the olt receiver is different , there will exist a wide dynamic range in the received uplink optical power
每個onu到olt接收機的傳輸損耗不同，因此所接收到的上行光功率將存在較大的動態(tài)范圍。 - The dissertation includes technique background of gpon , protocol summary , function architectures of olt and onu , dba ( dynamic band allocation ) algorithm and so on
本文概括描述了gpon技術(shù)的背景、標準協(xié)議的概述、系統(tǒng)中olt和onu的功能結(jié)構(gòu)和動態(tài)帶寬分配算法。 - Based on the comprehension of protocols of itu - t g . 984 and the analysis of many research results , we gives a solution of the architecture design for olt and onu in gpon system
在理解itu - tg . . 984系列協(xié)議的基礎(chǔ)上,以及結(jié)合目前國際國內(nèi)的研究成果,提出了gpon系統(tǒng)中olt 、 onu的結(jié)構(gòu)設計方案。 - The epon network includes optical line terminal ( olt ) and optical network unit ( onu ) . onuses share the optical distribution network ( odn ) trunk fiber back to the central office
Epon系統(tǒng)采用局端機( olt ) -用戶端機( olt )兩級結(jié)構(gòu),中間由無源光分配網(wǎng)絡完成下行光功率分配和上行光耦合。 - It's difficult to see onu in a sentence. 用onu造句挺難的
- Because the distances from different onus to olt are different , the amplitudes and phases of the different signals will have significant difference when receiving the receive terminal
由于不同的光網(wǎng)絡單元onu與光線路終端olt的距離不同，實際工作時到達接收端的信號的幅度，相位都相差很大。 - This kind of switch hub has characteristics such as dynamically allocating the whole bandwidth of one onu between all users connecting the switch hub , ability to connect ethernet
另外我們還設計了一個可以讓多個用戶共享同一onu的交換式集線器。它允許多用戶共享同一onu并且其總帶寬在用戶間動態(tài)分配。 - Epon is based on the mpcp mechanism of mac controlling sublayer , and automatic entering and enrolling are completed , then up - direction access bandwidth allocation of multi - onus can be implemented by mpcp protocol
Epon以mac控制子層的mpcp機制為基礎(chǔ),完成onu的自動加入、注冊,通過mpcp協(xié)議實現(xiàn)多個onu的上行接入帶寬分配。 - The third chapter introduces the function architecture of olt and onu , and then describes the functions and architectures of the key modules . the fourth chapter shows the information about dba in gpon protocols at first
第三章講述了在gpon協(xié)議的理解上提出了olt 、 onu系統(tǒng)方案,并且分別對系統(tǒng)中各模塊的功能、結(jié)構(gòu)進行了研究分析。 - Olt , which provides network access to onus is located in co ( central office ) side . onus which are responsible to send user data to olt and receive internet data from olt are located in customer side
其中olt位于局端,負責向多個onu提供網(wǎng)絡接入; onu位于用戶端,負責會聚用戶端的數(shù)據(jù)并將數(shù)據(jù)向olt發(fā)送,另外還負責接收從olt發(fā)來的數(shù)據(jù)。 - The novel olt - based polling scheme has a fixed polling cycle ( 2ms ) . onu ’ s buffer receives different data packets from user , and these packets are classified and then placed into their corresponding appropriate priority queue
新算法采用olt端集中統(tǒng)籌控制并以固定周期2ms輪詢各個onu , onu端主要控制分類緩存用戶端來的不同類別業(yè)務流。 - The new oam protocols should have basic management regulations including link state testing , fault alert , loop back etc . in this paper , we implement oam protocols in both olt and onu by adding oam software function block
新協(xié)議應該加入諸如鏈路狀態(tài)檢測,錯誤發(fā)生警告,環(huán)回測試等規(guī)程來實現(xiàn)接入管理。本文主要研究了在olt和onu上加載軟件模塊來實現(xiàn)oam管理。 - Ethernet provides best effort service , which does not provide quality of service and equity for different users . the topology structure of epon system contains many onus , which share bandwidth in the uplink direction using tdm method
由于以太網(wǎng)提供盡力而為的服務,不能保證不同業(yè)務的服務質(zhì)量以及不同用戶的公平性;另外, epon系統(tǒng)的拓撲結(jié)構(gòu)是由多個onu采用時分復用方式共享上行鏈路帶寬。 - Although ranging is adopted , certain phase shifts still exist between bit flows from onus to olts . therefore , fast synchronization must be applied to synchronize the receiving clock of olt to the bit flow being received from a certain onu
雖然采用了測距技術(shù)，但是各onu到達olt處的比特流仍存在一定的相位漂移，所以必須采取快速同步的技術(shù)，將olt的接收時鐘同步到當前所接收的、來自某一onu的比特流。 - At last , we give a prospect of apon : multi users access the backbone network to get services they need by low cost , high performance switch equipment through existing local area network is a good way and wdm access technology will be another promising method
最后我們探討了pon的發(fā)展趨勢，認為多用戶通過低價位、高性能的交換設備共享onu的接入方式和wdm接入方式為今后有線接入的具有競爭力的接入方式。
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