CN105450326A - Method and OLT for ensuring ONU service continuity - Google Patents

Method and OLT for ensuring ONU service continuity Download PDF

Info

Publication number
CN105450326A
CN105450326A CN 201410443235 CN201410443235A CN105450326A CN 105450326 A CN105450326 A CN 105450326A CN 201410443235 CN201410443235 CN 201410443235 CN 201410443235 A CN201410443235 A CN 201410443235A CN 105450326 A CN105450326 A CN 105450326A
Authority
CN
Grant status
Application
Patent type
Prior art keywords
plate
olt
0lt
onu
wavelength
Prior art date
Application number
CN 201410443235
Other languages
Chinese (zh)
Other versions
CN105450326B (en )
Inventor
温海波
张凯宾
宾梵翔
杨水根
Original Assignee
上海贝尔股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date

Links

Abstract

The invention provides a method and an OLT for ensuring ONU service continuity. The method comprises the steps of: acquiring information about an ONU from a first OLT board when determining that a wavelength path of the ONU needs to be reconfigured from a first wavelength path associated with the first OLT board to a second wavelength path associated with a second OLT board; registering the ONU with the second OLT board by utilizing the obtained information about the ONU; receiving information about the second wavelength path distributed to the ONU by the second OLT board from the second OLT board; sending a trigger command to the first OLT board, so as to trigger the first OLT board to send a reconfiguration command of the wavelength path to the ONU; and receiving a reconfiguration completion message sent by the second OLT board after the wavelength path of the ONU is reconfigured to the second wavelength path associated with the second OLT board.

Description

保证ONU服务连续性的方法和0LT ONU ensure service continuity of methods and 0LT

技术领域 FIELD

[0001] 本发明概括而言涉及多波长的无源光网络(Ρ0Ν),更具体而言,涉及在Ρ0Ν中的光网络单元(0NU)的波长通道发生跨0LT板重新配置时,用于保证0NU的服务连续性的方法和光线路终端(0LT)。 When [0001] The present invention relates summarized multi-wavelength Passive Optical Networks (Ρ0Ν), and more particularly, relates to an optical network unit in Ρ0Ν (0NU) wavelength channel reconfiguration occurs across 0LT plate, for ensuring 0NU service continuity method and an optical line terminal (0LT).

背景技术 Background technique

[0002]时分波分复用光网络(Time and Wavelength Divis1n Multiplexed PassiveOptical Network, TWDM-PON)最近已经被全业务接入网(Full Service Access Network,FSAN)和国际电信联盟标准化部门(ITU-T) Q2组选择作为下一代无源光网络(NGP0N2)的主要架构,其特征在于有至少40Gb/s的下行系统容量和lOGb/s的上行系统容量。 [0002] time division in WDM Optical Network (Time and Wavelength Divis1n Multiplexed PassiveOptical Network, TWDM-PON) have recently been Full Service Access Network (Full Service Access Network, FSAN) and the International Telecommunication Union Standardization Sector (ITU-T) Q2 is selected as the main structure of the next group of passive optical network (NGP0N2), characterized in that at least 40Gb / uplink system downlink system capacity and capacity lOGb / s of the s. 通过堆叠具有不同波长的几个TDM-P0N,可以将传统的TDM-P0N系统升级为具有更高带宽的TWDM-P0N。 By stacking several TDM-P0N having different wavelengths, the conventional TDM-P0N system can be upgraded to a higher TWDM-P0N bandwidth. 典型的40Gb/s的TWDM-P0N是通过堆叠四对每个具有10Gb/s的下行比特率的TDM-P0N所构成的。 Typical 40Gb / s of TWDM-P0N by stacking four pairs each downlink TDM-P0N having a bit rate of 10Gb / s constituted.

[0003] 在TWDM-P0N系统中,不同0LT板上的波长通道可以构成一个波长通道集合,以供物理光分配网(0DN)使用。 [0003] In TWDM-P0N system, channels of different wavelengths 0LT plates may constitute one set of wavelength channels, for the physical optical distribution network (0DN) use. 由于0NU光收发器的波长可调,因此0NU能够被从0DN中的一个波长通道重新配置到另一个波长通道。 Since the wavelength tunable 0NU optical transceiver, can be reconfigured so 0NU 0DN from one wavelength to another wavelength channel to channel.

[0004] 在未来无源光网络中,将一个或者多个0NU从一个波长通道迁移到另一个波长通道上去的场景可能是出于多种原因,例如负载均衡(即,让每个波长通道上的负载相对均衡),或者节约能源(例如某些波长通道上负载相当轻时,可以考虑将该通道上的0NU迁移到其他波长通道上去,然后关闭该波长通道(即关闭光收发器))。 [0004] a passive optical network in the future, one or more of a wavelength channel from 0NU migrate up to another wavelength channel scenario may be for a variety of reasons, such as load balancing (i.e., so that each wavelength channel the relatively balanced load), or energy conservation (e.g., relatively light load on some wavelength channels can be considered on the channel 0NU migrate to other wavelength channels up, and then close the wavelength channels (i.e., turning off the light transceiver)). 由于接入节点0LT有多个0LT线卡板,因此有可能是在多个0LT板之间进行负载均衡或者节能等操作。 Since a plurality of access nodes 0LT 0LT line card board, so there may be a load balancing operation or the like between a plurality of energy 0LT plates. 这样将某个或多个0NU从一个波长通道迁移到另外一个波长通道上时就存在着在同一个0LT板上的两个波长通道之间迁移和跨不同0LT板进行迁移这两种情况。 This will migrate from one or more 0NU a wavelength channel to another channel when there is a wavelength migrating between the two wavelength channels and the same board 0LT plate migration across different 0LT both cases.

发明内容 SUMMARY

[0005] 在0NU从一个波长通道重新配置到另一个波长通道时,如何保证该0NU的服务不被中断(即保证服务连续性)成为运营商非常关心的一个问题。 [0005] When 0NU reconfigured from one wavelength to another wavelength channel to channel, how to ensure the 0NU of uninterrupted service (which is to ensure continuity of service) becomes an issue of great concern to operators.

[0006] 对于在同一个0LT板上的两个波长通道之间迁移的情况,解决方案较为简单,而对于跨不同0LT板进行迁移的情况,需要仔细设计,当前还没有针对这一问题的成熟方案 [0006] In the case between the two wavelength channels with a 0LT board of migration, the solution is simple, but in the case of migration across different 0LT board, requiring careful design, currently no mature for this issue Program

[0007] 鉴于此,本发明的一个目的是提供一种在0NU的波长通道发生跨0LT板重新配置时,能够保证0NU的服务连续性的方法和支持该方法的0LT。 [0007] In view of this, an object of the present invention is to provide a wavelength channel occurs when cross 0LT 0NU plate reconfiguration, to ensure service continuity and support 0LT 0NU method of the process.

[0008] 根据本发明的一个方面,提供了一种在0NU的波长通道发生重新配置时,在0LT中执行的用于保证0NU的服务连续性的方法,该0LT包括第一0LT板和第二0LT板以及判决器,该方法包括以下步骤:当确定该0NU的波长通道要从与该第一0LT板相关联的第一波长通道重新配置到与该第二0LT板相关联的第二波长通道时,从该第一0LT板获取关于该0NU的信息;使用所获取的关于该0NU的信息,将该0NU注册到该第二0LT板;从该第二0LT板接收该第二OLT板向该ONU分配的关于该第二波长通道的信息;向该第一0LT板发送触发命令,以触发该第一0LT板向该0NU发送波长通道的重新配置命令;以及在该0NU的波长通道重新配置到与该第二0LT板相关联的第二波长通道之后,接收该第二0LT板所发送的重新配置完成消息。 [0008] In accordance with one aspect of the invention, there is provided a wavelength at 0NU channel reconfiguration occurs, the service continuity method 0LT 0NU guaranteed for execution, the 0LT comprising a first plate and a second 0LT 0LT plate and a decision device, the method comprising the steps of: when it is determined that the wavelength channels from the 0NU reconfigure the first channel of the first wavelength plate 0LT associated to a second wavelength channel associated with the second plate associated 0LT when obtaining the information about the 0NU 0LT from the first plate; using the acquired information about the 0NU of the 0NU 0LT register to the second plate; OLT receives the second plate to the plate from the second 0LT the information about the second wavelength channel allocated to ONU; 0LT plate to the first transmitting a trigger command to trigger the first reconfiguration command transmitted wavelength channel plate 0LT to 0NU; and reconfiguring the channel of the wavelength of 0NU after the passage of the second wavelength and a second plate associated 0LT, receiving the second 0LT plate reconfiguration complete message sent.

[0009] 根据本发明的第二个方面,提供了一种在0NU的波长通道发生重新配置时,用于保证该0NU的服务连续性的0LT,该0LT包括:第一0LT板和第二0LT板,每个0LT板被配置为与一个或多个波长通道相关联;判决器,其被配置为当该0NU的波长通道要从与该第一0LT板相关联的第一波长通道重新配置到与该第二0LT相关联的第二波长通道时,协调该0NU与该0LT之间的通信以保证该0NU的服务连续性。 [0009] According to a second aspect of the present invention, there is provided a wavelength at 0NU channel reconfiguration occurs, to ensure service continuity of the 0NU 0LT, the 0LT comprising: a first plate and a second 0LT 0LT plates, each plate is configured to 0LT with one or more wavelengths associated with the channel; decider configured when the channel reconfiguration 0NU wavelength from the first wavelength channel of the first plate associated to 0LT when the second channel of the second wavelength 0LT associated with the coordination of communication between the 0LT 0NU and to ensure service continuity of the 0NU.

[0010] 利用本发明的方案,能够在0NU的波长通道发生改变时,保证0NU的服务连续性。 [0010] With the embodiment of the present invention, it is possible when the wavelength channel is changed 0NU ensure service continuity of 0NU.

附图说明 BRIEF DESCRIPTION

[0011] 通过以下参考下列附图所给出的本发明的具体实施方式的描述之后,将更好地理解本发明,并且本发明的其他目的、细节、特点和优点将变得更加显而易见。 [0011] Having described specific embodiments of the present invention are given in the following drawings, the present invention will be better understood by reference to the following, and other objects, details, features and advantages of the present invention will become more apparent. 在附图中: In the drawings:

[0012] 图1示出了现有技术中的TWDM-P0N系统的示意图; [0012] FIG. 1 shows a schematic TWDM-P0N prior art system;

[0013] 图2示出了根据本发明实施方式的能够确保0NU的服务连续性的TWDM-P0N系统的不意图;以及 [0013] FIG. 2 shows a service continuity is not intended 0NU TWDM-P0N the system according to the embodiment of the present embodiment can be secured to the invention; and

[0014] 图3示出了根据本发明实施方式的在0LT中执行的用于保证0NU的服务连续性的方法的流程图。 [0014] FIG. 3 shows a flowchart of a method for performing 0LT in an embodiment of the present invention is to ensure service continuity of a 0NU.

[0015] 在所有附图中,相同或相似的参考标记指示相同或相似的元素。 [0015] In all the drawings, same or similar reference numerals designate the same or similar elements.

具体实施方式 Detailed ways

[0016] 下面将参照附图更详细地描述本公开的优选实施方式。 [0016] Preferred embodiments according to the present embodiment will now be disclosed in more detail with reference to the accompanying drawings described. 虽然附图中显示了本公开的优选实施方式,然而应该理解,可以以各种形式实现本公开而不应被这里阐述的实施方式所限制。 Although a preferred embodiment of the present disclosure in the drawings, however it should be understood that the present disclosure may be implemented and should not be limited to the embodiments set forth herein in various forms. 相反,提供这些实施方式是为了使本公开更加透彻和完整,并且能够将本公开的范围完整的传达给本领域的技术人员。 Rather, these embodiments are provided so that this disclosure will be thorough and complete, and the full scope of the disclosure to those skilled in the art to convey the art.

[0017] 图1示出了现有技术中的TWDM-P0N系统100的示意图。 [0017] FIG. 1 shows a schematic TWDM-P0N system 100 of the prior art. 如图1中所示,系统100 As shown in FIG. 1, the system 100

包括0LT110,一个或多个0NU120(如ONUpONl^、......、0NUn),以及0DN130。0LT110 包括多个0LT板(如0LT板111、112、113等),每个0LT板与一个或多个波长通道相关联。 Comprising 0LT110, one or more 0NU120 (eg ONUpONl ^, ......, 0NUn), and comprising a plurality 0LT 0DN130.0LT110 plates (e.g., 111, 112, etc. 0LT plate), each with a plate 0LT or a plurality of wavelengths associated channel. 0LT110还包括复用/解复用器116,用于对来自多个0LT板的多个发射/接收(Tx/Rx)天线的上行/下行数据进行复用/解复用。 0LT110 further comprising a multiplexer / demultiplexer 116, a plurality of plates 0LT from a plurality of transmit / receive (Tx / Rx) antennas uplink / downlink data multiplexing / demultiplexing. 在本文中,除非另作说明,上行数据/信号/链路是指从0NU到0LT的数据/信号/链路,下行数据/信号/链路是指从0LT到0NU的数据/信号/链路。 As used herein, unless otherwise specified, the uplink data / signal / data link refers to 0LT 0NU / signals / link, downlink data / signal / data link refers to 0NU 0LT / signals / link .

[0018] 0DN130包括光分路/合路器132,用于将来自各个0NU的上行数据耦合到同一根光纤传输到0LT,以及将来自0LT的下行数据分配到相应的0NU。 [0018] 0DN130 comprises an optical splitter / combiner 132, for the uplink data from each 0NU coupled to the same fiber to transmit 0LT, and downlink data from the respective assigned to 0LT 0NU. 在本文中,0DN130和0NU120的结构和功能与常规使用的相同,因此不再赘述。 Herein, 0DN130 same structure and function and 0NU120 conventionally used, is omitted.

[0019] 如上所述,由于在TWDM-P0N系统100中,0NU120使用可调的激光器和可调的光滤波器,因此当0NU从一个波长通道重新配置到另一个波长通道时如何保证0NU的服务连续性成为一个需要解决的问题。 [0019] As described above, since the system 100 TWDM-P0N, 0NU120 using tunable lasers and tunable optical filter, so 0NU when reconfiguring from a wavelength channel to another wavelength channel services of how to ensure 0NU continuity become a problem to be solved.

[0020] 对此,本发明提出了一种通过向0LT中引入判决器来解决这一问题的方案,如下所述。 [0020] In this regard, the present invention proposes a method to solve this problem by introducing into the decider 0LT Scheme, below.

[0021] 图2示出了根据本发明实施方式的能够确保0NU的服务连续性的TWDM-P0N系统200的示意图。 [0021] FIG. 2 shows a schematic diagram 200 according to ensure service continuity of TWDM-P0N 0NU system according to the present embodiment of the invention. 与图1的系统100类似,系统200包括0LT210,一个或多个0NU220(如ONUp Similar to system 100 of FIG. 1, system 200 includes 0LT210, one or more 0NU220 (eg ONUp

0NU2、......、0NUn),以及0DN230。0DN230和0NU220的结构和功能与上面结合图1所描述的 0NU2, ......, described 0NUn), as well as the structure and function of 0DN230.0DN230 and 0NU220 above in connection with FIG. 1

0DN130和0NU120以及常规使用的相同,因此不再赘述。 0DN130 and 0NU120 conventionally used and the same description is omitted.

[0022] 如图2中所示,0LT210与图1中的0LT110的不同之处在于还包括判决器218,其被配置为在0NU(如图2中的0NU1)的波长通道发生重新配置(例如从与0LT板211相关联的波长通道重新配置到与0LT板212相关联的波长通道)时,协调0NU与0LT之间的通信。 As shown in Figure [0022] 2, 0LT210 in FIG. 1 except 0LT110 characterized by further comprising decision 218, which is configured to 0NU (in FIG. 2 0NU1) wavelength channel reconfiguration occurs (e.g. when reconfiguring the wavelength plate 211 0LT channel associated with passage 212 to the wavelength associated 0LT plate), and coordinate communication between the 0NU 0LT.

[0023] 判决器218可以包括存储器(图中未示出),用于维护关于哪个0NU连接到哪个0LT的哪个波长通道的信息。 [0023] The decider 218 may include a memory (not shown), for maintaining information about which 0NU wavelength channel which is connected to which of 0LT. 该信息例如可以是包含0LT板索引、波长通道索引、活动0NU索引的对应关系表。 This information may comprise a plate 0LT index, wavelength channel index, activity index 0NU correspondence table.

[0024] 关于判决器218的具体功能和操作,以下结合图3的流程图来进一步详述。 [0024] About 218 decider specific functions and operations of the flowchart of FIG. 3 for further detail below in conjunction.

[0025] 在图2中,将判决器218描绘为位于各个0LT板上游,然而本领域技术人员可以理解,判决器218也可以与各个0LT板并行布置,或者位于其他能够与各个0LT板进行通信的位置。 [0025] In FIG. 2, the determiner 218 is depicted as located in various 0LT plate upstream, those skilled in the art will be appreciated, the arbiter 218 may be disposed in parallel with each 0LT plate, or in other to communicate with each 0LT plate s position.

[0026] 图3示出了根据本发明实施方式的在0LT中执行的用于保证0NU的服务连续性的方法300的流程图。 [0026] FIG. 3 shows a flowchart of a method 300 according to the embodiment for performing 0LT embodiment of the present invention is to ensure service continuity 0NU. 方法300的执行涉及0LT中的判决器(如图2中所示的判决器218)、0LT中的第一0LT板和第二0LT板(如图2中所示的0LT板211和0LT板212),以及波长通道发生重新配置的0NU(如图2中所示的其中一个0NU220,如0NUJ。 Performing the method 300 involves the decider 0LT (decision shown in FIG. 2 218), 0LT 0LT a first plate and a second plate 0LT (shown in FIG. 2 0LT plate 211 and the plate 212 0LT ), and 0NU wavelength channel reconfiguration occurs (as shown in FIG. 2 wherein a 0NU220, such 0NUJ.

[0027] 如图3中所示,方法300包括步骤310,其中当确定活动0NU220要发生波长通道的重新配置(例如从与第一0LT板211相关联的第一波长通道重新配置到与第二0LT板212相关联的第二波长通道)时,判决器218从第一0LT板211获取关于0NU220的信息。 [0027] As shown in FIG. 3, the method 300 includes step 310, wherein when it is determined wavelength channel reconfiguration 0NU220 activity is to occur (e.g., from a re-configuration of the first plate 211 0LT first wavelength channel to a second associated the second wavelength channel associated 0LT plate 212), arbiter 218 acquires information about 0NU220 0LT plate 211 from the first.

[0028] 在一种实现中,关于0NU220的信息可以包括0NU220的序列号(SN)和与0LT210之间的距离等信息。 [0028] In one implementation, the information may include information about 0NU220 0NU220 the sequence number (SN) and a distance between the 0LT210 like.

[0029] 在一种实现中,0NU的波长通道的重新配置可能是由判决器218根据以下情况中的任意一种或多种来确定的。 [0029] In one implementation, reconfiguration 0NU wavelength channel may be caused by the decision 218 determined according to any one of the following conditions or more.

[0030] (1)当前网络中仅有少量活动0NU。 [0030] (1) only a small current network activity 0NU. 在这种情况下,判决器218可以决定将这些活动0NU都配置到相同的波长通道上。 In this case, the decider 218 can determine these activities 0NU are arranged on the same wavelength channel.

[0031] (2)为了更好地利用Ρ0Ν的广播特性。 [0031] (2) In order to make better use of the broadcast properties Ρ0Ν. 在这种情况下,考虑到广播/组播信息,判决器218可以决定将接收相同的组播/广播服务的0NU都重新配置到同一接收波长通道。 In this case, taking into account the broadcast / multicast information decider 218 may decide to receive the same multicast / broadcast service 0NU are reconfigured to the same wavelength channel received. 这样,TWDM-P0N能够实现更高的效率。 Thus, TWDM-P0N to achieve higher efficiency.

[0032] (3)为了为虚拟网运营商(VN0)提供终端用户转网服务。 [0032] (3) In order to provide the end-user virtual network operators (VN0) switch network service. 例如,如果一个终端用户由TWDM-P0N运营商支持的一个VN0转网到该TWDM-P0N运营商支持的另一个VN0,需要将该终端用户所对应的活动0NU从与其原VN0相关联的波长通道重新配置到与其目的VN0相关联的波长通道。 For example, if an end user of TWDM-P0N supported by a carrier to the switch network VN0 TWDM-P0N VN0 another carrier support, the end user need the corresponding wavelength channel from its original activity 0NU associated VN0 reconfiguring the wavelength channel VN0 object associated therewith.

[0033] (4)各个0LT板的业务负载不均衡。 [0033] (4) the traffic load of each plate 0LT uneven. 例如,当判决器218发现过多的活动0NU集中于某一些0LT板或者某一个0LT板的某些波长通道时,可以决定将一些活动0NU重新配置到那些业务负载较小的OLT板或波长通道,以均衡负载。 For example, when the decision 218 Excessive activity found 0NU concentrated in a certain number of wavelength channels 0LT plate or a plate of a 0LT, 0NU activities may decide to reconfigure traffic to the smaller load board or OLT wavelength channels to balance the load.

[0034] 此外,0NU的波长通道的重新配置还可以基于其他因素做出。 [0034] Further, the reconfiguration 0NU wavelength channel can also be made based on other factors. 例如,可以基于系统强制指定,或者基于特定时间段(例如预先规定某一时间段将某个0NU配置在某个波长通道上,在另一时间段将该0NU配置到另一个波长通道)。 For example, the system may be based on the specified force, or based on a certain time period (e.g. a predetermined time period 0NU a certain wavelength channels disposed on at another time period to the other wavelength channels disposed 0NU).

[0035] 由于判决器218中维护有0LT板索引、波长通道索引和活动0NU索引之间的对应关系表,因此很容易做出关于哪些0NU需要进行波长通道的重新配置,以及需要重新配置到哪个0LT板的哪个波长通道的决定。 [0035] Since the decider 218 maintains the correspondence table between the index plate 0LT, 0NU wavelength channel index and activity index, which is made so easily be reconfigured 0NU wavelength channel, and needs to be reconfigured to which 0LT determine which wavelength channel plate.

[0036] 这里,以当确定0NU220要发生波长通道的重新配置时判决器218向第一0LT板211获取关于0NU220的信息为例来进行描述,然而本发明并不局限于此,而是可以在判决器218中总是预先存储有关于各个活动0NU220的信息。 [0036] Here, when it is determined 0NU220 wavelength channel reconfiguration to occur decision 218 211 acquires information on the first plate 0LT 0NU220 be described as an example, but the present invention is not limited thereto, but it may be judgment 218 there is always information about the various activities 0NU220 stored in advance.

[0037] 接下来,在步骤320,判决器218与第二0LT板212 (即目标0LT板)进行联系并使用在步骤310中所获取的关于0NU220的信息将0NU220注册到第二0LT板212。 [0037] Next, at step 320 contact, and the second decision 218 0LT plate 212 (i.e., the target 0LT plate) and used in step 310 of the acquired information about the 0NU220 0NU220 register 212 to the second plate 0LT.

[0038] 在将0NU220注册到第二0LT板212之后,在步骤330,第二0LT板212向0NU220分配关于第二波长通道(即目标波长通道)的信息,并将该信息发送给判决器218。 [0038] In the second register after 0NU220 0LT plate 212, at step 330, the second plate 212 0LT on a second wavelength channel allocation information (i.e., the target wavelength channel) to 0NU220, and transmits the information to the decision 218 . 关于第二波长通道的信息例如可以包括第二波长通道的波长、0NU220在第二波长通道上的标识符信息等,以有助于0NU220的快速重新配置。 Information about the second wavelength channel may comprise, for example, a wavelength of the second wavelength channel, 0NU220 identifier information on a second wavelength channel to facilitate the rapid reconfiguration 0NU220.

[0039] 接下来,在步骤340,判决器218向第一0LT板211发送触发命令,以触发第一0LT板211向0NU220发送波长通道的重新配置命令,其中,该触发命令包括判决器218在步骤330接收的关于第二波长通道的信息。 [0039] Next, at step 340, arbiter 218 sends a first trigger command 0LT plate 211, to trigger a first plate 211 0LT reconfiguration commands transmitted wavelength channel to 0NU220, wherein the trigger command includes a determiner 218 step 330 receives information on a second wavelength channel.

[0040] 在接收到该触发命令之后,在步骤350,第一0LT板211向0NU220发送波长通道的重新配置命令,以使得0NU220将波长通道从与第一0LT板211相关联的第一波长通道重新配置到与第二0LT板212相关联的第二波长通道。 [0040] After receiving the trigger command, at step 350, a first plate 211 0LT send reconfiguration commands to 0NU220 wavelength channel, so that the wavelength channel from the first 0NU220 0LT plate and the first wavelength associated with the channel 211 reconfigured to a second wavelength associated with a second channel plate 212 0LT. 在0NU220接收到波长通道的重新配置命令之后,暂时缓存其上行业务数据。 After receiving the reconfiguration command 0NU220 wavelength channel, which temporarily buffering the uplink traffic data. 类似地,在步骤340之后或者在步骤350之后,判决器218将来自网络侧的要发送给0NU220的下行业务数据缓存在第二0LT板212中。 Similarly, after step 340 or after step 350, a decision 218 from the network side downlink service data to be transmitted to the second cache 0NU220 0LT plate 212.

[0041] 接下来在步骤360,根据第一0LT板211的重新配置命令,0NU220将其波长通道从与第一0LT板211相关联的第一波长通道重新配置到与第二0LT板212相关联的第二波长通道,从而建立起与第二0LT板212之间的通信。 [0041] Next, at step 360, according to a first reconfiguration command 0LT plate 211, 0NU220 which wavelength channel from the first plate 211 0LT a first wavelength associated with the channel reconfiguring plate 212 and the second associated 0LT a second wavelength channel to establish communication between the plate 212 and the second 0LT.

[0042] 在0NU220与第二0LT板212之间的通信建立成功之后,在步骤370,第二0LT板212向判决器218发送重新配置完成消息。 [0042] After establishing a successful communication between 0NU220 plate 212 and a second 0LT, at step 370, the second plate 212 0LT transmitting reconfiguration complete message 218 to the decision. 响应于该重新配置完成消息,判决器218在步骤380更新其所维护的0LT板索引、波长通道索引和活动0NU索引之间的对应关系表。 In response to the reconfiguration complete message, at decision step 218 the index plate 380 0LT update its maintenance, the correspondence table between the index and the wavelength channel 0NU activity index.

[0043] 至此,0NU220的波长通道的重新配置完成,所缓存的上行/下行业务数据可以经由与第二0LT板212相关联的第二波长通道发送给第二0LT板212/0NU220。 [0043] Thus, the wavelength channel reconfiguration completion 0NU220, buffered uplink / downlink traffic data may be transmitted to the second plate 212 0LT / 0NU220 via a second wavelength associated with a second channel plate 212 0LT.

[0044] 利用本发明的方案,通过向0LT中引入判决器,使得在0NU发生波长通道的重新配置时,该判决器能够在0NU与0LT之间进行协调,以使得0NU能够快速地与目标0LT板建立通信连接。 [0044] With the embodiment of the present invention, by introducing into 0LT decider so that when 0NU wavelength channel reconfiguration occurs, the judgment is capable of coordination between 0NU and 0LT, so that the target can be quickly 0NU 0LT establishing a communication connection plate. 同时,本发明中提供的机制使得0NU和其之前通信的0LT板能够及时获知0NU的波长通道将要发生重新配置这一事实,从而能够及时将上行业务数据缓存在0NU中,并将下行业务数据缓存在目标0LT板中,以保证在0NU的波长通道的重新配置期间,它的业务数据不会丢失。 Meanwhile, the mechanism of the present invention is provided such that the plate 0LT 0NU and before the communication can timely learn 0NU wavelength channel to be the fact that the reconfiguration occurs, it is possible to promptly uplink traffic data is cached in 0NU, and the downlink service data cache 0LT the target board, to ensure that during reconfiguration 0NU the wavelength channel, it may not be lost.

[0045] 在一个或多个示例性设计中,可以用硬件、软件、固件或它们的任意组合来实现本申请所述的功能。 [0045] In one or more exemplary designs, it can be implemented in hardware, software, firmware or any combination thereof to implement the functions described herein. 如果用软件来实现,则可以将所述功能作为一个或多个指令或代码存储在计算机可读介质上,或者作为计算机可读介质上的一个或多个指令或代码来传输。 If implemented in software, the functions may be as one or more instructions or code stored on a computer-readable medium, or as a computer-readable medium on or more instructions or code transmitted. 计算机可读介质包括计算机存储介质和通信介质,其中通信介质包括有助于计算机程序从一个地方传递到另一个地方的任意介质。 Computer-readable media includes both computer storage media and communication media, which facilitate communication media includes a computer program from one place to another place in any medium. 存储介质可以是通用或专用计算机可访问的任意可用介质。 A storage media may be any available media general purpose or special computer accessible. 这种计算机可读介质可以包括,例如但不限于,RAM、ROM、EEPROM、CD-ROM或其它光盘存储设备、磁盘存储设备或其它磁存储设备,或者可用于以通用或专用计算机或者通用或专用处理器可访问的指令或数据结构的形式来携带或存储希望的程序代码模块的任意其它介质。 Such computer-readable media may include, for example, but not limited to, RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or may be used in a general purpose or special purpose computer or a general-purpose or special-purpose any other medium accessible to the processor in the form of instructions or data structures used to carry or store desired program code means. 并且,任意连接也可以被称为是计算机可读介质。 Also, any connection may be termed a computer-readable medium. 例如,如果软件是使用同轴电缆、光纤光缆、双绞线、数字用户线(DSL)或诸如红外线、无线电和微波之类的无线技术来从网站、服务器或其它远程源传输的,那么同轴电缆、光纤光缆、双绞线、DSL或诸如红外线、无线电和微波之类的无线技术也包括在介质的定义中。 For example, if the software is using a coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or such as infrared, radio, and microwave wireless technologies from a website, server, or other remote source, then the coaxial cable, fiber optic cable, twisted pair, DSL, or such as infrared, radio, and microwave wireless technologies are also included in the definition of medium.

[0046] 可以用通用处理器、数字信号处理器(DSP)、专用集成电路(ASIC)、现场可编程门阵列(FPGA)或其它可编程逻辑器件、分立门或者晶体管逻辑、分立硬件组件或用于执行本文所述的功能的任意组合来实现或执行结合本公开所描述的各种示例性的逻辑块、模块和电路。 [0046] may be general purpose processor, a digital signal processor (DSP), application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or with various illustrative logical blocks, modules, and circuits in any combination thereof to perform the functions described herein to perform the described in connection with the present disclosure. 通用处理器可以是微处理器,或者,处理器也可以是任何常规的处理器、控制器、微控制器或者状态机。 A general purpose processor may be a microprocessor, or the processor may be any conventional processor, controller, microcontroller, or state machine. 处理器也可以实现为计算设备的组合,例如,DSP和微处理器的组合、多个微处理器、一个或多个微处理器与DSP内核的结合,或者任何其它此种结构。 A processor may also be implemented as a combination of computing devices, e.g., a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration.

[0047] 本领域普通技术人员还应当理解,结合本申请的实施例描述的各种示例性的逻辑块、模块、电路和算法步骤可以实现成电子硬件、计算机软件或二者的组合。 [0047] Those of ordinary skill in the art will also be understood that the present disclosure in conjunction with various illustrative logical blocks, modules, circuits, and algorithm steps described embodiments may be implemented as electronic hardware, computer software, or both. 为了清楚地表示硬件和软件之间的这种可互换性,上文对各种示例性的部件、块、模块、电路和步骤均围绕其功能进行了一般性描述。 To clearly illustrate this interchangeability of hardware and software, various illustrative of components, blocks, modules, circuits, and steps have been described generally their functionality. 至于这种功能是实现成硬件还是实现成软件,取决于特定的应用和施加在整个系统上的设计约束条件。 Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the overall system. 本领域技术人员可以针对每种特定应用,以变通的方式实现所描述的功能,但是,这种实现决策不应解释为背离本发明的保护范围。 Those skilled in the art for each particular application may, in varying ways to implement the described functionality, but such implementation decisions should not be interpreted as departing from the scope of the present invention.

[0048] 本公开的以上描述用于使本领域的任何普通技术人员能够实现或使用本发明。 [0048] The above description of the present disclosure to enable any person skilled in the art to make or use the present invention. 对于本领域普通技术人员来说,本公开的各种修改都是显而易见的,并且本文定义的一般性原理也可以在不脱离本发明的精神和保护范围的情况下应用于其它变形。 To those of ordinary skill in the art, various modifications of the disclosure are apparent, and the generic principles defined herein may be applied to other variations without departing from the spirit and scope of the present invention. 因此,本发明并不限于本文所述的实例和设计,而是与本文公开的原理和新颖性特性的最广范围相一致。 Accordingly, the present invention is not limited to the examples and designs described herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (9)

  1. 1.一种在光网络单元(ONU)的波长通道发生重新配置时,在光线路终端(OLT)中执行的用于保证所述ONU的服务连续性的方法,所述OLT包括第一OLT板和第二OLT板以及判决器,所述方法包括以下步骤: 当确定所述ONU的波长通道要从与所述第一OLT板相关联的第一波长通道重新配置到与所述第二OLT板相关联的第二波长通道时,从所述第一OLT板获取关于所述ONU的信息;使用所获取的关于所述ONU的信息,将所述ONU注册到所述第二OLT板; 从所述第二OLT板接收所述第二OLT板向所述ONU分配的关于所述第二波长通道的信息; 向所述第一OLT板发送触发命令,以触发所述第一OLT板向所述ONU发送波长通道的重新配置命令;以及在所述ONU的波长通道重新配置到与所述第二OLT板相关联的第二波长通道之后,接收所述第二OLT板所发送的重新配置完成消息。 A reconfiguration occurs when the optical network unit (ONU) of wavelength channels, a method for the ONU to ensure continuity of service is performed in the optical line terminal (OLT), the OLT OLT comprises a first plate and a second plate and a decision OLT, the method comprising the steps of: when it is determined from the ONU wavelength channel from the first channel of the first wavelength plate OLT reconfiguring associated with the second plate OLT when the channel associated with the second wavelength, obtained from the first information about the OLT of the ONU plate; using the acquired information about the ONU will register the ONU to the OLT second plate; from the said second plate OLT receives information about the second channel of the second wavelength plate OLT to the ONU said dispensing; OLT sends the first plate trigger command, to trigger the first plate to the OLT ONU transmits reconfiguration commands wavelength channel; and after reconfiguration to the second plate of the second OLT wavelength channel associated wavelength channel of the ONU, the OLT to receive the second reconfiguration complete message sent plate .
  2. 2.如权利要求1所述的方法,其中基于以下情况中的任意一种或多种确定将所述第一OLT板所服务的所述ONU重新配置到所述第二OLT板: 当前网络中仅有少量活动ONU ; 为了利用无源光网络的广播特性; 为了为虚拟网运营商(VNO)提供终端用户转网服务; 各个OLT板的业务负载不均衡; 系统强制指定波长信道的重新配置; 基于特定时间段。 2. The method according to claim 1, wherein any one or more of the following conditions to determine the first OLT to the ONU service reconfiguration plate to the second plate OLT based: the current network only a limited number of actions the ONU; to take advantage of the broadcast nature of a passive optical network; go network in order to provide the end user as a virtual network operator (VNO) services; OLT traffic load of each plate is not balanced; enforce the system reconfiguration wavelength channels; based on a specific time period.
  3. 3.如权利要求1所述的方法,还包括: 在向所述第一OLT板发送触发命令之后,或者在所述第一OLT板向所述ONU发送波长通道的重新配置命令之后,将来自网络侧的要发送给所述ONU的下行业务数据缓存在所述第二OLT板中。 3. The method according to claim 1, further comprising: after sending the trigger after the first command to the OLT plate or wavelength channel reconfiguration commands transmitted to the ONU in the OLT first plate, from the to be transmitted to the network side of the ONU downlink service data is cached in the second OLT plate.
  4. 4.如权利要求1所述的方法,还包括: 存储OLT板索引、波长通道索引和活动ONU索引之间的对应关系表;以及响应于所述重新配置完成消息,更新所述对应关系表。 4. The method according to claim 1, further comprising: storing a correspondence table between the index plate OLT, ONU wavelength channel index and activity index; and in response to the reconfiguration complete message, updating the correspondence table.
  5. 5.一种在光网络单元(ONU)的波长通道发生重新配置时,用于保证所述ONU的服务连续性的光线路终端(OLT),所述OLT包括: 第一OLT板和第二OLT板,每个OLT板与一个或多个波长通道相关联; 判决器,其被配置为当所述ONU的波长通道要从与所述第一OLT板相关联的第一波长通道重新配置到与所述第二OLT相关联的第二波长通道时,协调所述ONU与所述OLT之间的通信以保证所述ONU的服务连续性。 5. A optical network unit (ONU) wavelength channel reconfiguration occurs, to ensure continuity of service of the ONU optical line terminal (OLT), the OLT comprising: a first OLT and a second OLT plate plates, each plate OLT with one or more wavelengths associated with the channel; decider configured when the wavelength channels from the ONU to the OLT first wavelength channel of said first plate associated with reconfiguring the second OLT wavelength channel associated with the second, coordinate communication between the ONU and the OLT to the ONU to ensure service continuity.
  6. 6.如权利要求5所述的OLT,其中所述判决器还被配置为: 当确定所述ONU的波长通道要从与所述第一OLT板相关联的第一波长通道重新配置到与所述第二OLT板相关联的第二波长通道时,从所述第一OLT板获取关于所述ONU的信息;使用所获取的关于所述ONU的信息,将所述ONU注册到所述第二OLT板; 从所述第二OLT板接收所述第二OLT板向所述ONU分配的关于所述第二波长通道的信息; 向所述第一OLT板发送触发命令,以触发所述第一0LT板向所述0NU发送波长通道的重新配置命令;以及在所述0NU的波长通道重新配置到与所述第二0LT板相关联的第二波长通道之后,接收所述第二0LT板所发送的重新配置完成消息。 6. The OLT of claim. 5, wherein the determiner is further configured to: when it is determined from the ONU wavelength channel from the first channel of the first wavelength plate OLT associated with reconfiguring the when a second wavelength channel of said second plate associated with the OLT, the ONU acquires information about OLT from the first plate; using information about the ONU acquired, to register the ONU to the second OLT plate; receiving information about the second channel of the second wavelength plate OLT to the ONU allocated from the second OLT plate; transmitting a trigger command to the first OLT plate, to trigger the first 0LT plate reconfiguration commands transmitted to the wavelength channel 0NU; and after reconfiguration to the second plate of the second wavelength channel 0LT associated 0NU of said wavelength channel, receiving the transmitted second plate 0LT reconfiguration complete message.
  7. 7.如权利要求5所述的0LT,其中所述判决器还被配置为: 当所述第一0LT板的业务负载远远大于所述第二0LT板时,确定将所述第一0LT板所服务的所述0NU重新配置到所述第二0LT板;或者当所述第一0LT板和所述第二0LT板的业务负载都很低时,确定将所述第一0LT板所服务的所述0NU重新配置到所述第二0LT板。 7. 5 0LT claim, wherein the determiner is further configured to: when the traffic load of the first plate 0LT 0LT far greater than the second plate, determining the first plate 0LT the 0NU served 0LT reconfigured to the second plate; or when the traffic load of the first plate and the second 0LT 0LT plate are very low, determining the first plate and services 0LT reconfiguring the 0NU 0LT to the second plate.
  8. 8.如权利要求5所述的0LT,其中所述判决器还被配置为: 在向所述第一0LT板发送触发命令之后,或者在所述第一0LT板向所述0NU发送波长通道的重新配置命令之后,将来自网络侧的要发送给所述0NU的下行业务数据缓存在所述第二0LT板中。 8. 5 0LT claim, wherein the determiner is further configured to: after transmitting a trigger command to the first 0LT plate, or to the transmission wavelength channel 0NU the first plate 0LT after reconfiguration command to be sent from the network side to the downlink service data in the second cache 0NU 0LT plate.
  9. 9.如权利要求5所述的0LT,其中所述判决器还包括存储器,用于存储0LT板索引、波长通道索引和活动0NU索引之间的对应关系表;以及响应于所述重新配置完成消息,更新所述对应关系表。 9. 0LT. 5 claim, wherein the decider further comprises a memory for storing index 0LT plate, a correspondence table between the index and the wavelength channel 0NU activity index; and in response to the reconfiguration complete message updating said correspondence table.
CN 201410443235 2014-09-02 2014-09-02 Onu ensure service continuity of methods and olt CN105450326B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201410443235 CN105450326B (en) 2014-09-02 2014-09-02 Onu ensure service continuity of methods and olt

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201410443235 CN105450326B (en) 2014-09-02 2014-09-02 Onu ensure service continuity of methods and olt

Publications (2)

Publication Number Publication Date
CN105450326A true true CN105450326A (en) 2016-03-30
CN105450326B CN105450326B (en) 2018-07-06

Family

ID=55560166

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201410443235 CN105450326B (en) 2014-09-02 2014-09-02 Onu ensure service continuity of methods and olt

Country Status (1)

Country Link
CN (1) CN105450326B (en)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101562760A (en) * 2008-04-17 2009-10-21 Pmc-斯尔若以色列有限公司 Methods and devices for reducing power consumption in a passive optical network while maintaining service continuity
US20110156937A1 (en) * 2007-12-05 2011-06-30 Broadcom Corporation Multi-Speed Burst Mode Serializer/De-Serializer
CN102739624A (en) * 2011-04-15 2012-10-17 中兴通讯股份有限公司 Method and system for automatically migrating business of passive optical network unit
US20130183039A1 (en) * 2012-01-18 2013-07-18 Telefonaktiebolaget L M Ericsson (Publ) Selectable multiple-wavelength access for optical network units in arrayed waveguide based wavelength division multiplexing passive optical network
CN103236882A (en) * 2013-04-26 2013-08-07 上海交通大学 OLT (optical line terminal) energy saving method in TWDM-PON (time wavelength division multiplexing- passive optical network) system
CN103475411A (en) * 2013-08-22 2013-12-25 南京邮电大学 Time division passive optical network
CN103634709A (en) * 2012-08-28 2014-03-12 上海贝尔股份有限公司 A method used for supporting an optical network unit to migrate between a plurality of passive optical network (PON)s
CN103973389A (en) * 2013-02-06 2014-08-06 上海贝尔股份有限公司 Method for automatically configuring wavelength of optical network units

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110156937A1 (en) * 2007-12-05 2011-06-30 Broadcom Corporation Multi-Speed Burst Mode Serializer/De-Serializer
CN101562760A (en) * 2008-04-17 2009-10-21 Pmc-斯尔若以色列有限公司 Methods and devices for reducing power consumption in a passive optical network while maintaining service continuity
CN102739624A (en) * 2011-04-15 2012-10-17 中兴通讯股份有限公司 Method and system for automatically migrating business of passive optical network unit
US20130183039A1 (en) * 2012-01-18 2013-07-18 Telefonaktiebolaget L M Ericsson (Publ) Selectable multiple-wavelength access for optical network units in arrayed waveguide based wavelength division multiplexing passive optical network
CN103634709A (en) * 2012-08-28 2014-03-12 上海贝尔股份有限公司 A method used for supporting an optical network unit to migrate between a plurality of passive optical network (PON)s
CN103973389A (en) * 2013-02-06 2014-08-06 上海贝尔股份有限公司 Method for automatically configuring wavelength of optical network units
CN103236882A (en) * 2013-04-26 2013-08-07 上海交通大学 OLT (optical line terminal) energy saving method in TWDM-PON (time wavelength division multiplexing- passive optical network) system
CN103475411A (en) * 2013-08-22 2013-12-25 南京邮电大学 Time division passive optical network

Also Published As

Publication number Publication date Type
CN105450326B (en) 2018-07-06 grant

Similar Documents

Publication Publication Date Title
US20130089336A1 (en) Apparatus for communicating a plurality of antenna signals at different optical wavelengths
US20120315040A1 (en) Method for fast wavelength division multiplexing (wdm) passive optical network (pon) initialization in heterogeneous networks
US20080175590A1 (en) Communication Network with Skew Path Monitoring and Adjustment
CN101742365A (en) Passive optical network (PON) wavelength assignment method, device and system
US20120128358A1 (en) Transmission Method and Assembling Method for Physical Layer Operations, Administration and Maintenance (PLOAM) Message in a Passive Optical Network
CN101083564A (en) Method for updating automatically optical network unit and optical line terminal
JP2007324885A (en) Optical communication method, optical communication network system, host station optical communication device, and slave station optical communication device
US20130004174A1 (en) Link setup method for wavelength division multiplexing wavelength passive optical network(wdm pon) system
US20140341579A1 (en) Statistical Optical Design Enabled Via TWDM-PON
CN103391486A (en) Method for wave length adjustment, optical line terminal and optical network unit
US20150365191A1 (en) Method of tuning wavelength in time and wavelength division multiplexing-passive optical network (twdm-pon)
CN101568046A (en) Method for realizing coexistence of unsymmetrical 10GEPON and GEPON optical network terminals and system thereof
JP2011147023A (en) Optical communication system, station side device, subscriber side device, and optical communication method
US20150318929A1 (en) Rogue Optical Network Unit Mitigation in Passive Optical Networks
JP2009027538A (en) Optical network termination device, optical access system, and communicating service system
US20150365192A1 (en) Method of tuning wavelength of tunable optical network unit (onu) in time and wavelength division multiplexing-passive optical network (twdm-pon)
CN101860770A (en) Method and system for converging fixed network and mobile network
CN102917286A (en) Hand-in-hand protection switching method and system in EPON (Ethernet Passive Optical Network)
CN101944966A (en) Wavelength distribution method and system in passive optical network
US20140029947A1 (en) Method and Apparatus for Detecting Optical Network Unit, and Passive Optical Network System
Ji et al. All optical switching networks with energy-efficient technologies from components level to network level
US20140161461A1 (en) Time and wavelength division multiplexing - passive optical network (twdm-pon) system and communication link method thereof
US20140294391A1 (en) Bandwidth allocation device and bandwidth allocation method
CN102882801A (en) Automatic wavelength tuning method and automatic wavelength tuning system based on TWDM-PON (time wavelength division multiplexing-passive optical network)
US20140219661A1 (en) Method of selecting wavelength of optical network unit in passive optical network

Legal Events

Date Code Title Description
C06 Publication
C10 Entry into substantive examination
CB02
GR01