WO2009152758A1

WO2009152758A1 - Method and equipment for transmitting the uplink burst data in the passive optical network system

Info

Publication number: WO2009152758A1
Application number: PCT/CN2009/072290
Authority: WO
Inventors: 耿东玉; 封东宁; 李靖; 梁伟光; 埃芬博格·弗兰克
Original assignee: 华为技术有限公司
Priority date: 2008-06-19
Filing date: 2009-06-16
Publication date: 2009-12-23

Abstract

A method for transmitting the uplink burst data in the passive optical network system is provided, which includes that: transmitting the sync pattern of the uplink burst data, and the length of the sync pattern being integral multiple of 66 bits, and the units of 66 bits gene block being linked to form the sync pattern (S11); transmitting the burst delimiter of the uplink burst data (S12); transmitting the data protected by forward error correction in the uplink burst data (S13); transmitting the end of the burst delimiter of the uplink burst data (S14).

Description

无源光网络***中发送上行突发数据的方法及装置本申请要求于 2008 年 06 月 19 日提交中国专利局、申请号为 200810068007.1、发明名称为 "提供无源光网络***中上行突发数据的方法" 的中国专利申请的优先权，其全部内容通过引用结合在本申请中。本申请要求于 2008年 11月 21 日提交中国专利局、申请号为 PCT/CN2008/073140、发明名称为 "提供无源光网络***中上行突发数据的方法及装置" 的 PCT 申请的优先权，其全部内容通过引用结合在本申请中。本申请要求于 2009年 03 月 02 日提交中国专利局、申请号为 200910008103.1、发明名称为 "提供无源光网络***中上行突发数据的方法及装置"的中国专利申请的优先权，其全部内容通过引用结合在本申请中。 Method and device for transmitting uplink burst data in a passive optical network system The present application claims to be submitted to the Chinese Patent Office on June 19, 2008, the application number is 200810068007.1, and the invention name is "providing uplink burst data in a passive optical network system. The priority of the Chinese Patent Application, the entire disclosure of which is hereby incorporated by reference. This application claims priority to the PCT application filed on November 21, 2008 by the Chinese Patent Office, Application No. PCT/CN2008/073140, entitled "Method and Apparatus for Providing Upstream Burst Data in Passive Optical Network Systems" The entire contents of which are incorporated herein by reference. This application claims priority to Chinese Patent Application No. 200910008103.1, entitled "Method and Apparatus for Providing Upstream Burst Data in Passive Optical Network Systems", filed on March 02, 2009, The content is incorporated herein by reference.

技术领域 Technical field

本发明涉及无源光网络技术领域，尤其涉及一种无源光网络***中发送上行突发数据的方法及装置。 The present invention relates to the field of passive optical network technologies, and in particular, to a method and apparatus for transmitting uplink burst data in a passive optical network system.

背景技术 Background technique

无源光网络（Passive Optical Network, PON ) 由于其易维护、高带宽、低成本等优点成为光接入技术的佼佼者，是通过单一平台综合接入语音、数据、视频等多种业务的理想物理平台。 PON技术是点到多点（P2MP ) 的光纤接入技术。 PON由光线路终端（ Optical Line Terminal, OLT ) 、光网络单元（ Opitcal Network Unit, ONU )和光分配网络（ Optical Distribution Network, ODN )组成，其优点来源于 ODN 中的无源光分 /合路器（Splitter/Coupler ), 因而 PON 不需要使用具有放大和中继功能的元器件。 Passive Optical Network (PON) is the leader in optical access technology due to its advantages of easy maintenance, high bandwidth, and low cost. It is an ideal combination for accessing voice, data, video and other services through a single platform. Physical platform. PON technology is point-to-multipoint (P2MP) fiber access technology. The PON is composed of an Optical Line Terminal (OLT), an Opitcal Network Unit (ONU), and an Optical Distribution Network (ODN). Its advantages are derived from the passive optical splitter/combiner in the ODN. (Splitter/Coupler), so PON does not need to use components with amplification and relaying capabilities.

由于 PON采用点对多点的拓朴结构，所以必须采用点对多点多址接入协议使得众多的 ONU能共享 OLT和主干光纤。 PON***中约定，数据从 OLT 到 ONU的方向为下行方向，从 ONU到 OLT的方向为上行方向。 PON下行釆用时分复用（TDM ) 的广播方式和上行采用时分多址接入（TDMA ) 的接入方式是目前应用广泛的 PON***的上下行传输方式。 Since the PON uses a point-to-multipoint topology, a point-to-multipoint multiple access protocol must be used to enable many ONUs to share the OLT and backbone fibers. In the PON system, the direction of data from the OLT to the ONU is the downlink direction, and the direction from the ONU to the OLT is the uplink direction. PON downlink 广播 The time-division multiplexing (TDM) broadcast mode and the uplink time-division multiple access (TDMA) access mode are the uplink and downlink transmission modes of the currently widely used PON system.

与传统的点对点连续通信方式不同， PON 上行为多点到一点的突发模式 ( Burst )的通信方式。 PON的上行传输采用 TDMA接入方式共享其上行信道。 OLT会分配不同的时隙给每个 ONU, ONU只在 OLT指定的时隙发送自己的数据信息块。 Unlike the traditional point-to-point continuous communication method, the PON performs a burst-to-point burst mode (Burst) communication method. The uplink transmission of the PON uses TDMA access to share its uplink channel. The OLT allocates different time slots to each ONU. The ONU only sends its own data information block in the time slot specified by the OLT.

由于在 PON***中，不同的 ONU和 OLT端的距离都是不一样的，因此 OLT端接收到的属于不同 ONU所发送的信号的强度也会不同。因此当 OLT 接收到 ONU的突发数据帧后， OLT接收端是有必要利用此帧中的同步模式序列（前导码）进行自动增益（ Automatic Gain Control, AGC )及时钟恢复（ Clock Data Recovery, CDR ), 然后 OLT利用突发定界符 ( Burst Delimiter )和接收的突发帧进行匹配，当接收帧中的序列和突发定界符匹配上后， OLT即可知道此突发帧中数据的起始位置，从而进行数据的接收。 Since the distance between different ONUs and OLTs is different in the PON system, the strength of the signals transmitted by the OLTs belonging to different ONUs will be different. Therefore, after the OLT receives the burst data frame of the ONU, it is necessary for the OLT receiving end to use the synchronization mode sequence (preamble) in the frame for automatic gain (AGC) and clock recovery (Clock Data Recovery, CDR). Then, the OLT uses the Burst Delimiter to match the received burst frame. When the sequence in the received frame matches the burst delimiter, the OLT can know the data in the burst frame. The starting position, thereby receiving data.

现有 PON***上行传送的突发帧结构将 0、 1间隔，二进制为" 1010..."的序列 (其十六进制为" 0x55... " )定义为现有的同步模式序列。同步模式序列被 OLT 用来对所接收的突发帧进行自动增益及时钟恢复。实践发现该同步模式序列信号的频谱集中在高频分量处，这不利于在 OLT接收端使用低复杂度的均衡器。并且跳变的频率快，这就使得现有的峰值检测器不能检测到所接收信号的实际峰值，有可能造成接收器灵敏度的退化。 The burst frame structure of the uplink transmission of the existing PON system defines a sequence of 0, 1 interval, binary "1010..." (the hexadecimal is "0x55...") as an existing sequence of synchronization patterns. The synchronous mode sequence is used by the OLT to perform automatic gain and clock recovery on the received burst frame. It has been found that the spectrum of the synchronous mode sequence signal is concentrated at high frequency components, which is disadvantageous for using a low complexity equalizer at the OLT receiving end. And the frequency of the hopping is fast, which makes the existing peak detector unable to detect the actual peak value of the received signal, which may cause degradation of the receiver sensitivity.

发明内容 Summary of the invention

本发明实施例提供一种提供 PON***中上行突发数据的方法，其同步模式序列的频谱分量在整个频谱区间都是较为平坦，这使得高速 PON***的接收端可以使用较为筒单的均衡器。 Embodiments of the present invention provide a method for providing uplink burst data in a PON system, wherein a spectrum component of a synchronous mode sequence is relatively flat throughout a spectrum interval, which enables a receiver of a high-speed PON system to use a relatively simple equalizer. .

本发明实施例提供一种无源光网络***中发送上行突发数据的方法，包括： Embodiments of the present invention provide a method for transmitting uplink burst data in a passive optical network system, including:

发送上行突发数据的同步模式序列，该所述同步模式序列长度为 66比特的整数倍，以 66比特的基因块为单位连接而成； And a synchronization mode sequence for transmitting uplink burst data, wherein the synchronization pattern sequence length is an integer multiple of 66 bits, and is connected by a 66-bit gene block unit;

发送所述上行突发数据的突发定界符； Sending a burst delimiter of the uplink burst data;

发送所述上行突发数据中受前向糾错保护的数据； Transmitting, in the uplink burst data, data protected by forward error correction;

发送所述上行突发数据的突发结束定界符。 Sending a burst end delimiter of the uplink burst data.

同时本发明实施例提供一种提供无源光网络***中上行突发数据的装置，所述装置包括： At the same time, an embodiment of the present invention provides an apparatus for providing uplink burst data in a passive optical network system, where the apparatus includes:

提供上行突发数据的同步模式序列的单元，所述同步模式序列长度为 66 比特的整数倍，由 66比特的基因块为单位连接而成； Providing a unit of a synchronization pattern sequence of uplink burst data, the synchronization pattern sequence length being 66 An integer multiple of a bit, connected by a 66-bit gene block;

提供所述上行突发数据的突发定界符的单元； Providing a unit of a burst delimiter of the uplink burst data;

提供所述上行突发数据中受前向纠错保护的数据的单元； Providing, in the uplink burst data, a unit of data protected by forward error correction;

提供所述上行突发数据的突发结束定界符的单元。 A unit that provides a burst end delimiter for the upstream burst data.

进一步，本发明还提供一种由比特流组成的信号，所述信号为无源光网络 ***中上行突发数据，其特征在于，所述信号以长度为 66比特的基因块为单位首尾连接而成的同步模式序列、突发定界符、受前向纠错保护的数据及突发结束定界符组成，所述信号的长度为 66比特的整数倍。 Further, the present invention further provides a signal consisting of a bit stream, the signal being uplink burst data in a passive optical network system, wherein the signal is connected end-to-end with a gene block of 66 bits in length. The resulting sync pattern sequence, the burst delimiter, the data subject to forward error correction protection, and the burst end delimiter, the length of the signal being an integer multiple of 66 bits.

本发明实施例还提供一种无源光网络中发送上行突发的方法，所述方法为： The embodiment of the invention further provides a method for transmitting an uplink burst in a passive optical network, where the method is:

发送上行突发数据的同步模式序列，所述同步模式序列长度为 32比特的整数倍，以 32比特的基因块为单位连接而成； Sending a synchronization pattern sequence of uplink burst data, the synchronization pattern sequence length being an integer multiple of 32 bits, and being connected by a 32-bit gene block unit;

发送突发定界符； Send a burst delimiter;

发送突发帧头，突发帧头用于检测链路误码率、光网络单元标识和光网络单元的实时状态报告； Sending a burst frame header, the burst frame header is used to detect a link error rate, an optical network unit identifier, and a real-time status report of the optical network unit;

发送传输会聚层数据帧头； Send a transmission convergence layer data frame header;

发送数据净荷。 Send the data payload.

同时再提供一种无源光网络中发送上行突发的装置，所述装置包括：同步模式序列发送单元，用于发送同步模式序列，所述同步模式序列长度为 32比特的整数倍，由 32比特的基因块为单位连接而成； A device for transmitting an uplink burst in a passive optical network is provided. The device includes: a synchronization mode sequence sending unit, configured to send a synchronization mode sequence, where the synchronization mode sequence length is an integer multiple of 32 bits, and is 32 The genetic blocks of bits are connected in units;

突发定界符发送单元，用于发送突发定界符； a burst delimiter sending unit, configured to send a burst delimiter;

突发帧头发送单元，用于发送突发帧头，突发帧头用于检测链路误码率、光网络单元标识和光网络单元的实时状态报告； a burst frame header sending unit, configured to send a burst frame header, where the burst frame header is used to detect a link error rate, an optical network unit identifier, and a real-time status report of the optical network unit;

传输会聚层数据帧头发送单元，用于发送传输会聚层数据帧头；数据净荷发送单元，用于发送数据净荷。 The transmission convergence layer data frame header sending unit is configured to send a transmission convergence layer data frame header; and the data payload sending unit is configured to send a data payload.

同时再提供一种由比特流组成的信号，所述信号为无源光网络***中上行突发数据，所述信号包括： At the same time, a signal consisting of a bit stream is provided, which is uplink burst data in a passive optical network system, and the signal includes:

长度为 32比特的整数倍并以 32比特的基因块为单位连接而成的同步模式序列，突发定界符， a synchronous pattern sequence in which an integer multiple of 32 bits is connected in units of 32-bit gene blocks, Burst delimiter,

用于检测链路误码率、光网络单元标识和光网络单元的实时状态报告的突发帧头，传输会聚层数据帧头，及发送数据净荷。 A burst header for detecting a link error rate, an optical network unit identity, and a real-time status report of the optical network unit, transmitting a convergence layer data frame header, and transmitting a data payload.

应用本发明实施例所提供的上下突发数据，其同步模式序列的频谱分量在整个频谱区间都是较为平坦，这使得高速 PON***的接收端可以使用较为简单的均衡器。 Applying the upper and lower burst data provided by the embodiments of the present invention, the spectral components of the synchronous mode sequence are relatively flat throughout the spectrum interval, which enables a relatively simple equalizer to be used at the receiving end of the high speed PON system.

附图说明图 1为本发明实施例上行传送的突发数据的结构；图 2为本发明实施例同步模式序列的基因块；图 3为本发明实施例 FIFO队列中内容的变化图；图 4 为本发明实施例提供的一种在无源光网络***中发送上行突发数据的方法流程简图；图 5为由基因 1首尾相接而生成的同步模式序列的频谱图；图 6为本发明实施例提供无源光网络***中上行突发数据的装置框图；图 7为本发明实施例二中上行传送的突发数据的结构；图 8为本发明实施例二中发送上行突发的方法流程图；图 9为基因 10序列的频谱图；图 10为本发明实施例二中上行突发数据的装置的框图。 BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a schematic structural diagram of burst data transmitted in the uplink according to an embodiment of the present invention; FIG. 2 is a block diagram of a synchronous mode sequence according to an embodiment of the present invention; FIG. 3 is a diagram showing changes in content in a FIFO queue according to an embodiment of the present invention; A schematic flowchart of a method for transmitting uplink burst data in a passive optical network system according to an embodiment of the present invention; FIG. 5 is a spectrum diagram of a synchronization pattern sequence generated by the end of the gene 1; FIG. The embodiment of the invention provides a block diagram of the uplink burst data in the passive optical network system. FIG. 7 is a schematic diagram of the structure of the burst data transmitted in the uplink according to the second embodiment of the present invention; FIG. 8 is a schematic diagram of transmitting the uplink burst according to the second embodiment of the present invention; FIG. 9 is a frequency spectrum diagram of a sequence of genes 10; FIG. 10 is a block diagram of an apparatus for uplink burst data according to a second embodiment of the present invention.

具体实施方式 detailed description

下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。 BRIEF DESCRIPTION OF THE DRAWINGS The technical solutions in the embodiments of the present invention will be described in detail below with reference to the accompanying drawings. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative work are within the scope of the present invention.

本发明实施例以 10GEPON ( 10G Ethernet Passive Optical Network, 10G 以太网无源光网络）***为例对技术方案进行描述。如图 1所示的本发明实施例上行传送的突发数据的结构。 ONU 发送的上行突发数据由同步模式序列 ( Sync Pattern ) 、突发定界符（ Burst Delimiter, BD ) 、受 FEC保护的以太网数据和突发结束定界符 ( EOB ) 构成。其中同步模式序列和突发定界符不受 FEC编码保护，突发定界符其后为 FEC码字，即受 FEC保护的以太网数据。突发定界符用来标识突发中受 FEC保护的数据部分的开始。同步模式序列被 OLT用来对所接收的突发帧进行自动增益及时钟恢复。 The technical solution is described by taking a 10GEPON (10G Ethernet Passive Optical Network) system as an example. The structure of the burst data transmitted upstream in the embodiment of the present invention as shown in FIG. Upstream burst data sent by the ONU by the synchronous mode sequence (Sync Pattern), Burst Delimiter (BD), FEC-protected Ethernet data, and Burst End Delimiter (EOB). The synchronous mode sequence and the burst delimiter are not protected by the FEC encoding, and the burst delimiter is followed by the FEC codeword, that is, the FEC protected Ethernet data. The burst delimiter is used to identify the beginning of the FEC protected portion of the data in the burst. The synchronization pattern sequence is used by the OLT to perform automatic gain and clock recovery on the received burst frame.

本发明实施例所设计的同步模式序列是由 66比特基因块经过扩展组成。图 2提供了一组可用来生成本发明实施例所述的同步模式序列的基因块，图 2 中所示的为基本基因块。由图 2所示的基本基因块通过取反或镜像或循环移位处理可以获得新的设计同步模式序列的基因块。本发明实施例所设计的同步模式序列由这些基因块为单位首尾相接组成。 The synchronization pattern sequence designed by the embodiment of the present invention is composed of 66-bit gene blocks. Figure 2 provides a set of gene blocks that can be used to generate a synchronized pattern sequence as described in the embodiments of the present invention, and the basic gene block is shown in Figure 2. A new gene block designing a synchronous pattern sequence can be obtained by inverting or mirroring or cyclically shifting the basic gene block shown in FIG. 2. The synchronization pattern sequence designed in the embodiment of the present invention is composed of these gene blocks in units of head and tail.

由图 2 的基本基因块可衍生出更多可以用来生成本发明所述同步模式序列的基因块。例如，基本基因块 1取反生成基因块： More gene blocks that can be used to generate the synchronized pattern sequences of the present invention can be derived from the basic gene block of Figure 2. For example, the basic gene block 1 is reversed to generate a gene block:

0100000010111111011110011101011 0100000010111111011110011101011

基本基因块 1通过镜像处理而生成：所述镜像处理可以理解为倒序处理，例如 ABCD镜像处理的结果为 DCBA。基本基因块 1循环移位生成基因块：上述为循环移位 1位处理，实际应用中可移任意位。 The basic gene block 1 is generated by image processing: The image processing can be understood as reverse processing, for example, the result of the ABCD image processing is DCBA. The basic gene block 1 cyclic shift generates a gene block: The above is a cyclic shift 1 bit processing, and any bit can be moved in practical applications.

如此类推，更多的基因块可由图 2所提供的基本基因块取反、镜像或循环移位获得。并且基本基因块取反或者镜像处理后再循环移位仍然可获得基因块。 By analogy, more gene blocks can be obtained by inverting, mirroring or cyclically shifting the basic gene block provided in Figure 2. And the gene block can still be obtained by reversing the basic gene block or reversing the shift after mirroring.

基本基因块为： The basic gene block is:

I I

或 Or

101 101

或 or

图 2 所提供的基本基因块及通过基本基因块获得的基因块均有以下的特占 . The basic gene blocks provided in Figure 2 and the gene blocks obtained by the basic gene block have the following special features.

本发明实施例所设计的同步模式序列的长度为 66比特的整数倍，并且同步模式序列由 66比特基因块为单位首尾相接组成； The synchronization mode sequence designed in the embodiment of the present invention has an integer multiple of 66 bits, and the synchronization mode sequence is composed of a 66-bit gene block unit end-to-end;

本发明实施例所设计的同步模式序列均为直流平衡序列，并且 0和 1的游程相同，最大游程为 6。 The synchronous mode sequence designed by the embodiment of the present invention is a DC balanced sequence, and the runs of 0 and 1 are the same, and the maximum run length is 6.

在目前 10G-EPON的***中， ONU是需要控制发送端激光器的开关的。当 ONU没有数据传输时， ONU的激光器应该关闭以避免影响相邻的 ONU的传送。激光器的开关是由数据检测器来控制，当数据检测器检测到待发送数据到达时， ONU打开激光器。 In the current 10G-EPON system, the ONU is a switch that needs to control the transmitter laser. When there is no data transmission on the ONU, the ONU's laser should be turned off to avoid affecting the transmission of the adjacent ONU. The switch of the laser is controlled by a data detector. When the data detector detects that the data to be transmitted arrives, the ONU turns on the laser.

结合图 3 本发明实施例其先入先出（FIFO ) 队列中内容的变化介绍提供上行突发数据的方法。 Referring to Figure 3, a variation of the contents of the first in first out (FIFO) queue in the embodiment of the present invention describes a method of providing uplink burst data.

替换前后的 FIFO可用如下表: The FIFOs before and after replacement can be used as follows:

FIFO 替换前的值替换后的值描述 Value before FIFO replacement Value after replacement Description

序号 Serial number

N-1 扰码后 IDLE 扰码后 IDLE 该值为原 FIFO队列尾的加扰后 IDLE After N-1 scrambling code IDLE scrambling code IDLE This value is the scrambled IDLE of the original FIFO queue tail

N-2 扰码后 IDLE 扰码后 IDLE 该值为原 FIFO队列尾的加扰后 IDLE After ID-2 scrambling code after ID-2 scrambling code, IDLE is the value of the original FIFO queue tail. Disturbed IDLE

N-3 扰码后 IDLE BD 替换为同步突发定界符 After N-3 scrambling code, IDLE BD is replaced with sync burst delimiter

N-4 扰码后 IDLE Ox 4 BF 40 18 E5 C5 49 替换为同步模式序列 66比 After N-4 scrambling code IDLE Ox 4 BF 40 18 E5 C5 49 Replaced with synchronous mode sequence 66 ratio

BB 59 特基因块 BB 59 special gene block

t_{t t t} , , _{t t t} 同上 t _ttt , , _ttt ibid.

1 扰码后 IDLE Ox 4 BF 40 18 E5 C5 49 同上 1 After scrambling code IDLE Ox 4 BF 40 18 E5 C5 49 Same as above

BB 59 BB 59

0 扰码后 IDLE Ox 4 BF 40 18 E5 C5 49 同上 0 After scrambling code IDLE Ox 4 BF 40 18 E5 C5 49 Ibid.

BB 59 BB 59

(表中替换后的值用十六进制形式表示） (The replaced value in the table is expressed in hexadecimal form)

FIFO序号 0为队列头， N-1为队列尾。替换前后的值均以 block (数据块 ) 为单位，即 66比特的整数倍。 The FIFO sequence number 0 is the queue header and N-1 is the queue tail. The values before and after replacement are in block (block), which is an integer multiple of 66 bits.

当待发送数据到达 ONU数据检测器时，队列尾的两个 FIFO块 [N-1]和 [N-2] 的内容（空闲符， IDLE )保持不变， FIFO块 [N-3]的内容被替换为同步突发定界符，而 FIFO块 [N-4]至 [0]的内容则被替换为本发明所设计的同步模式序列。 N为队列的长度，与同步时间有关。然后根据先进先出的规则依次将队列中的数据发送出去。 When the data to be transmitted reaches the ONU data detector, the contents of the two FIFO blocks [N-1] and [N-2] at the end of the queue (idle, IDLE) remain unchanged, and the contents of the FIFO block [N-3] It is replaced with a synchronous burst delimiter, and the contents of the FIFO blocks [N-4] to [0] are replaced with the synchronous pattern sequence designed by the present invention. N is the length of the queue and is related to the synchronization time. The data in the queue is then sent out in turn according to the first in first out rule.

FIFO采用先入先出的规则，首先是该上行突发数据的同步模式序列，例如使用同步模式序列是由本发明实施例所提供的图 2中的 N-3 个 66比特的基因 1即 N-3个 The FIFO adopts a first-in first-out rule, firstly a sequence of synchronization patterns of the uplink burst data, for example, using a synchronization pattern sequence, which is N-3 66-bit genes 1 of FIG. 2 provided by the embodiment of the present invention, that is, N-3. One

(其十六进制值为： Ox 4 BF 40 18 E5 C5 49 BB 59 ) 首尾相接而组成。然后提供该上行突发数据的突发定界符。之后提供该上行突发数据中受 FEC保护的数据。最后提供该上行突发数据的突发结束定界符。当 ONU的数据检测器的 FIFO里的内容只为 IDLE时， ONU发送端将会关闭激光器。上行突发数据发送完成。 (The hexadecimal value is: Ox 4 BF 40 18 E5 C5 49 BB 59 ) The head and tail are connected to each other. A burst delimiter for the upstream burst data is then provided. The FEC protected data in the upstream burst data is then provided. Finally, a burst end delimiter of the uplink burst data is provided. When the content in the FIFO of the ONU's data detector is only IDLE, the ONU transmitter will turn off the laser. The uplink burst data transmission is completed.

显然上述说明中， ONU提供的上行突发数据的各部分，也就是指 ONU将行突发数据。这里所说的各个部分包括：同步模式序列，突发定界符，受 FEC 保护的数据，和突发结束定界符四个部分。 Obviously, in the above description, each part of the uplink burst data provided by the ONU, that is, the ONU will burst data. The various parts mentioned here include: Synchronous mode sequence, burst delimiter, subject to FEC The protected data, and the burst end delimiter are four parts.

结合图 4，上述提供无源光网络***中上行突发数据的方法，也就是一种在无源光网络***中发送上行突发数据的方法包括： Referring to FIG. 4, the foregoing method for providing uplink burst data in a passive optical network system, that is, a method for transmitting uplink burst data in a passive optical network system includes:

步骤 11 : 发送上行突发数据的同步模式序列，该所述同步模式序列长度为 66比特的整数倍，以 66比特的基因块为单位连接而成； Step 11: Send a synchronization pattern sequence of uplink burst data, where the sequence length of the synchronization pattern is an integer multiple of 66 bits, and is connected by a 66-bit gene block unit;

步骤 12: 发送所述上行突发数据的突发定界符； Step 12: Send a burst delimiter of the uplink burst data;

步骤 13: 发送所述上行突发数据中受前向纠错保护的数据； Step 13: Send data that is protected by forward error correction in the uplink burst data.

步骤 14: 发送所述上行突发数据的突发结束定界符. Step 14: Send a burst end delimiter of the uplink burst data.

所以，本实施例最终产生了上行突发的数据，其为一种由比特流组成的信号，所述信号是由长度为 66比特的基因块为单位首尾连接而成的同步模式序歹 |J、突发定界符、受 FEC保护的数据及突发结束定界符组成，该信号的长度为 66比特的整数倍。并且所述同步模式序列为直流平衡序列，并且其二进制码中 0和 1的游程相同，最大游程为 6。应用中所述 66比特的基因块可为图 2 所示的基本基因块或者由基本基因块经过取反或者镜像或者循环移位处理获得，并且基本基因块取反或者镜像处理后再循环移位仍然可获得基因块。突发数据给 OLT ) ， OLT接收端将利用突发数据里的突发同步模式序列的 0 和 1之间的跳变对所接收的数据进行时钟恢复和自动增益。 Therefore, in this embodiment, the data of the uplink burst is finally generated, which is a signal composed of a bit stream, and the signal is a synchronous mode sequence which is connected by a gene block of 66 bits in length. The burst delimiter, the FEC protected data, and the burst end delimiter, the length of the signal is an integer multiple of 66 bits. And the synchronous mode sequence is a DC balanced sequence, and the runs of 0 and 1 in the binary code are the same, and the maximum run is 6. The 66-bit gene block described in the application can be obtained from the basic gene block shown in Figure 2 or by inversion or mirroring or cyclic shift processing of the basic gene block, and the basic gene block is inverted or mirrored and recirculated. Gene blocks are still available. Burst data is sent to the OLT. The OLT receiver will use the transition between 0 and 1 of the burst synchronization pattern in the burst data to clock recovery and automatic gain of the received data.

本发明实施例所设计的同步模式序列均为直流平衡序列， 0和 1的游程相同，最大游程为 6, 使接收端的峰值检测器可检测到所接收信号的接近 100 % 的峰值水平。 The synchronous mode sequence designed by the embodiment of the present invention is a DC balanced sequence, and the run lengths of 0 and 1 are the same, and the maximum run length is 6, so that the peak detector at the receiving end can detect the peak level of the received signal close to 100%.

由于本发明实施例所设计的同步模式序列的频谱分布在整个频谱区间都比较平坦，这就使得在 OLT接收端可以使用复杂度较低的均衡器。图 5为由基因 1首尾相接而生成的同步模式序列的频谱图。从图 5中可以看出本实施例中上行突发数据的同步模式序列的频谱为实线，其整个频语区间都比较平坦。虚线为现有技术中的同步模式序列的频谱图，频谱分量都集中在高频。通过该图可以看出本实施收到了较为良好的效果。 Since the spectrum distribution of the synchronization pattern sequence designed by the embodiment of the present invention is relatively flat throughout the spectrum interval, the lower complexity equalizer can be used at the OLT receiving end. Figure 5 is a spectrogram of a synchronized pattern sequence generated by the end of the gene 1 connection. It can be seen from FIG. 5 that the spectrum of the synchronization pattern sequence of the uplink burst data in this embodiment is a solid line, and the entire frequency interval is relatively flat. The dashed line is the spectrogram of the prior art synchronous mode sequence, and the spectral components are concentrated at high frequencies. It can be seen from the figure that the implementation has received relatively good results.

同时本发明实施例还提供了一种提供无源光网络***中上行突发数据的装置，如图 6所示，所述装置 5包括：提供该上行突发数据的同步模式序列的单元 501 , 该同步模式序列长度为 66比特的整数倍，由 66比特的基因块为单位首尾连接而成； At the same time, the embodiment of the present invention further provides an apparatus for providing uplink burst data in a passive optical network system. As shown in FIG. 6, the apparatus 5 includes: a unit 501 for providing a synchronization pattern sequence of the uplink burst data, wherein the synchronization pattern sequence length is an integer multiple of 66 bits, and is formed by connecting 66-bit gene blocks as a unit end-to-end;

提供该上行突发数据的突发定界符的单元 502; Providing a unit 502 of the burst delimiter of the uplink burst data;

提供该上行突发数据中受前向纠错保护的数据的单元 503; Providing a unit 503 for data protected by forward error correction in the uplink burst data;

提供该上行突发数据的突发结束定界符的单元 504。 A unit 504 that provides a burst end delimiter for the upstream burst data.

其中上行突发数据的同步模式序列的单元提供的所述同步模式序列为直流平衡序列，并且其二进制码中 0和 1的游程相同，最大游程为 6。应用中所述 66比特的基因块可为图 2所示的基本基因块或者由基本基因块经过取反或者镜像或者循环移位处理获得，并且基本基因块取反或者镜像处理后再循环移位仍然可获得基因块。 The synchronization mode sequence provided by the unit of the synchronization mode sequence of the uplink burst data is a DC balance sequence, and the runs of 0 and 1 in the binary code are the same, and the maximum run is 6. The 66-bit gene block described in the application may be obtained by the basic gene block shown in FIG. 2 or by inversion or mirroring or cyclic shift processing of the basic gene block, and the basic gene block is inverted or mirrored and then recirculated and shifted. Gene blocks are still available.

本发明第二实施例以吉比特无源光网络 GPON ( Gigabit-Capable Passive Optical Network ) ***为例对技术方案进行描述。如图 7所示的本发明第二实施例上行传送的突发数据的结构。 ONU 发送的上行突发数据由 PLOu ( Physical Layer Overhead upstream , 上行物理控制头）， GTC (GPON Transmission Convergence, GPON传输会聚层） overhead (数据帧头）和 GTC payload (数据静荷）字段构成。 GPON***的 ONU上行突发帧的物理控制头由同步模式序列、定界符和突发帧头组成，同步模式序列、定界符等都是按照 OLT所发送的 Upstream— Overhead包含的参数进行制定。同步模式序列被 OLT用来对所接收的突发帧进行自动增益及时钟恢复。 The second embodiment of the present invention describes a technical solution by taking a Gigabit-Capable Passive Optical Network (GPON) system as an example. The structure of the burst data transmitted upstream in the second embodiment of the present invention as shown in FIG. The uplink burst data sent by the ONU is composed of PLOu (Physical Layer Overhead upstream), GTC (GPON Transmission Convergence) overhead (data frame header) and GTC payload (data payload) fields. The physical control header of the ONU uplink burst frame of the GPON system is composed of a synchronization mode sequence, a delimiter and a burst frame header, and the synchronization pattern sequence and delimiter are all formulated according to the parameters included in the Upstream_Overhead sent by the OLT. . The sync pattern sequence is used by the OLT to perform automatic gain and clock recovery for the received burst frame.

本实施例再给出一种无源光网络中发送上行突发的方法。如图 8所示： This embodiment further provides a method for transmitting an uplink burst in a passive optical network. As shown in Figure 8:

S101 , 发送上行突发数据的同步模式序列，该同步模式序列长度为 32比特的整数倍，由 32比特的基因块为单位连接而成。 S101. Send a synchronization mode sequence of uplink burst data, where the sequence length of the synchronization mode is an integer multiple of 32 bits, and is formed by connecting 32-bit gene blocks.

实际中所发送的同步模式序列由 32比特基因块经过扩展组成。表 1提供了一组可用来生成本发明实施例所述的同步模式序列的基因块，表 1中所示的为基本基因块。由表 1所示的基本基因块通过取反或镜像或循环移位处理可以获得新的设计同步模式序列的基因块。本发明实施例所设计的同步模式序列由这些基因块为单位首尾相接组成。 The sequence of synchronization patterns transmitted in practice consists of a 32-bit gene block that is extended. Table 1 provides a set of gene blocks that can be used to generate the synchronized pattern sequences described in the Examples of the present invention, and the basic gene blocks are shown in Table 1. A new gene block designing a synchronous pattern sequence can be obtained by inverting or mirroring or cyclically shifting the basic gene block shown in Table 1. The synchronization pattern sequence designed in the embodiment of the present invention is composed of these gene blocks as a unit end to end.

表 1 同步模式序列的基因块（32比特） Table 1 Gene block of synchronous pattern sequence (32 bits)

I 32比特基本基因块基因 10 10111011010100100001111000100110 I 32-bit basic gene block Gene 10 10111011010100100001111000100110

基因 11 00010011010011110111010000101011 Gene 11 00010011010011110111010000101011

基因 12 11010011011100101011110100010000 Gene 12 11010011011100101011110100010000

基因 13 11110001001101011101101010010000 Gene 13 11110001001101011101101010010000

基因 14 10111011110010110010001101010000 Gene 14 10111011110010110010001101010000

基因 15 10101100010011010011110111010000 Gene 15 10101100010011010011110111010000

基因 16 10001011110101001110110010110000 Gene 16 10001011110101001110110010110000

基因 17 11110110101001000101001101110000 Gene 17 11110110101001000101001101110000

基因 18 10010101101110101100100011110000 基因 19 11101100101000100101011011110000 列的基因块。例如，基本基因块 10取反生成基因块： Gene 18 10010101101110101100100011110000 Gene 19 11101100101000100101011011110000 Column of gene blocks. For example, the basic gene block 10 is inverted to generate a gene block:

01000100101011011110000111011001 01000100101011011110000111011001

基本基因块 10通过鏡像处理而生成： The basic gene block 10 is generated by mirroring:

01100100011110000100101011011101 ; 01100100011110000100101011011101;

所述镜像处理可以理解为倒序处理，例如 ABCD镜像处理的结果为 DCBA。基本基因块 10循环移位生成基因块： The mirroring process can be understood as a reverse processing, for example, the result of the ABCD mirroring process is DCBA. The basic gene block 10 cyclically shifts to generate a gene block:

11101101010010000111100010011010。 11101101010010000111100010011010.

上述为循环移位 2位处理，实际应用中可移任意位。 The above is a cyclic shift 2-bit processing, and any bit can be shifted in practical applications.

如此类推，更多的基因块可由表 1所提供的基本基因块取反、镜像或循环移位获得。并且基本基因块取反或者镜像处理后再循环移位仍然可获得基因块。 By analogy, more gene blocks can be obtained by inverting, mirroring or cyclically shifting the basic gene block provided in Table 1. And the gene block can still be obtained by reversing the basic gene block or reversing the shift after mirroring.

表 1 所提供的基本基因块及通过基本基因块获得的基因块均有以下的特点： The basic gene blocks provided in Table 1 and the gene blocks obtained by the basic gene block have the following characteristics:

本实施例所设计的同步模式序列的长度为 32比特的整数倍，并且同步模式序列由 32比特基因块为单位首尾相接组成； The length of the synchronization pattern sequence designed in this embodiment is an integer multiple of 32 bits, and the synchronization pattern sequence is composed of a 32-bit gene block unit end-to-end;

本发明实施例所设计的同步模式序列均为直流平衡序列，并且 0和 1的游程相同，最大游程为 4。 The synchronous mode sequence designed by the embodiment of the present invention is a DC balanced sequence, and the runs of 0 and 1 are the same, and the maximum run length is 4.

OLT按照不同***的要求从表 1中选取相对应的定界符序列。如 GPON ***可选择长度为 32比特的定义为 Ox BB52 1E26的序列（二进制为 1011 1011 0101 0010 0001 1110 0010 0110 ) 。 OLT 发送端将此序列定义在 Upstream_Overhead中，然后 OLT预先定义的 Upstream_Overhead嵌入到下行的 PLOAMd信令的中。 ONU根据所接收到 PLOAMd中的 Upstream_Overhead 中的同步模式序列，发送其上行突发的同步模式序列。本发明实施例所发送的同步模式序列均为直流平衡序列， 0和 1的游程相同，最大游程为 4。 The OLT selects the corresponding delimiter sequence from Table 1 according to the requirements of different systems. Such as GPON The system can select a sequence of 32 bits defined as Ox BB52 1E26 (binary is 1011 1011 0101 0010 0001 1110 0010 0110). The OLT sender defines this sequence in Upstream_Overhead, and then the OLT's pre-defined Upstream_Overhead is embedded in the downstream PLOAMd signaling. The ONU transmits a sequence of synchronization patterns of its uplink bursts according to the sequence of synchronization patterns in Upstream_Overhead received in PLOAMd. The synchronization mode sequence sent by the embodiment of the present invention is a DC balance sequence, and the runs of 0 and 1 are the same, and the maximum run length is 4.

5102, 发送突发定界符。 5102, Send a burst delimiter.

5103 , 发送突发帧头，突发帧头用于检测链路误码率、标识 ONU-ID 和 ONU的实时状态报告。 5103. Send a burst frame header, and the burst frame header is used to detect a link error rate, and identify a real-time status report of the ONU-ID and the ONU.

S104, 发送传输会聚层数据帧头。 S104. Send a transmission convergence layer data frame header.

S105 , 发送数据净荷。 S105, sending a data payload.

完成上行突发的发送，上述同时生成一比特流组成信号。 The transmission of the uplink burst is completed, and the above-mentioned one bit stream is combined to form a signal.

当 OLT接收端接收到由 ONU发送过来的上行突发数据后， OLT接收端将利用突发数据里的突发同步模式序列的 0和 1之间的跳变对所接收的数据进行时钟恢复和自动增益。 After the OLT receiving end receives the uplink burst data sent by the ONU, the OLT receiving end will use the transition between 0 and 1 of the burst synchronization mode sequence in the burst data to perform clock recovery on the received data. Automatic gain.

由于本发明实施例所设计的同步模式序列的频谱分布在整个频谱区间都比较平坦，这就使得在 OLT接收端可以使用复杂度较低的均衡器。图 9为本实施例由表 1中基因 10序列的频谱图。从图 9中可以看出本实施例中上行突发数据的同步模式序列的频谱为实线，其整个频谱区间都比较平坦。虚线为现有技术中的同步模式序列的频谱图，频谱分量都集中在高频。通过该图可以看出本实施收到了较为良好的效果。本实施例可使得接收端的峰值检测器可检测到所接收信号的接近 100 %的峰值水平。 Since the spectrum distribution of the synchronization pattern sequence designed by the embodiment of the present invention is relatively flat throughout the spectrum interval, the lower complexity equalizer can be used at the OLT receiving end. Figure 9 is a spectrogram of the sequence of the gene 10 in Table 1 of the present Example. It can be seen from Fig. 9 that the spectrum of the synchronization pattern sequence of the uplink burst data in this embodiment is a solid line, and the entire spectrum interval is relatively flat. The dashed line is the spectrogram of the synchronous mode sequence in the prior art, and the spectral components are concentrated at high frequencies. It can be seen from the figure that this embodiment has received relatively good results. This embodiment allows the peak detector at the receiving end to detect a peak level of nearly 100% of the received signal.

同时本发明实施例还提供的完成实施例二的一种提供无源光网络***中上行突发数据的装置，如图 10所示，所述装置 90包括： A device for providing uplink burst data in a passive optical network system is provided in the embodiment of the present invention. As shown in FIG. 10, the device 90 includes:

同步模式序列发送单元 901 , 用于发送同步模式序列，该同步模式序列长度为 32比特的整数倍，由 32比特的基因块为单位连接而成。 The synchronization mode sequence transmitting unit 901 is configured to send a synchronization mode sequence, the sequence length of which is an integer multiple of 32 bits, and is connected by a 32-bit gene block unit.

同步模式序列发送单元 901所发送的同步模式序列为为直流平衡序列，并且 0和 1的游程相同，最大游程为 4。应用中所述 32比特的基因块可为表 1 所示的基本基因块或者由基本基因块经过取反或者镜像或者循环移位处理获得，并且基本基因块取反或者镜像处理后再循环移位仍然可获得基因块。突发定界符发送单元 902, 用于发送突发定界符。 The synchronization pattern sequence transmitted by the synchronization pattern sequence transmission unit 901 is a DC balance sequence, and the runs of 0 and 1 are the same, and the maximum run length is 4. The 32-bit gene block described in the application may be the basic gene block shown in Table 1 or obtained by inverting or mirroring or cyclically shifting the basic gene block. Obtained, and the gene block is still obtained by reversing the basic gene block or reversing the shift after mirroring. The burst delimiter sending unit 902 is configured to send a burst delimiter.

突发帧头发送单元 903 , 用于发送突发帧头，突发帧头用于用于检测链路误码率、标识 ONU-ID和 ONU的实时状态报告。 A burst header transmission unit 903 is configured to send a burst header, and the burst header is used to detect a link error rate, a real-time status report identifying the ONU-ID, and the ONU.

传输会聚层数据帧头发送单元 904, 用于发送传输会聚层数据帧头。数据净荷发送单元 905 , 用于发送数据净荷。 The transmission convergence layer data frame header sending unit 904 is configured to send a transmission convergence layer data frame header. The data payload sending unit 905 is configured to send a data payload.

采用本发明实施例的装置后其所发送的同步模式序列的频谱分量在整个频谱区间都是较为平坦，这使得高速 ΡΟΝ***的接收端可以使用较为筒单的均衡器。 The spectrum component of the synchronous mode sequence transmitted by the apparatus of the embodiment of the present invention is relatively flat throughout the spectrum interval, which enables the receiver of the high speed system to use a relatively simple equalizer.

以上所述仅为本发明的几个实施例，本领域的技术人员依据申请文件公开的可以对本发明进行各种改动或变型而不脱离本发明的精神和范围。 The above is only a few embodiments of the present invention, and those skilled in the art can make various changes or modifications to the invention without departing from the spirit and scope of the invention.

Claims

权利要求 Rights request

1、一种无源光网络***中发送上行突发数据的方法，其特征在于，包括：发送上行突发数据的同步模式序列，该所述同步模式序列长度为 66比特的整数倍，以 66比特的基因块为单位连接而成； A method for transmitting uplink burst data in a passive optical network system, comprising: transmitting a synchronization pattern sequence of uplink burst data, the sequence length of the synchronization pattern being an integer multiple of 66 bits, to 66 The genetic blocks of bits are connected in units;

发送所述上行突发数据中受前向纠错保护的数据； Transmitting, in the uplink burst data, data protected by forward error correction;

2、如权利要求 1所述的方法，其特征在于，所述同步模式序列为直流平衡序列，并且其二进制码中 0和 1的游程相同，最大游程为 6。 2. The method according to claim 1, wherein the synchronization pattern sequence is a DC balance sequence, and the run lengths of 0 and 1 in the binary code are the same, and the maximum run length is 6.

3、如权利要求 1所述的方法，其特征在于，所述 66比特的基因块用二进制表示为：或者由上述基因块取反或镜像或循环移位获得，或者由上述基因块取反或镜像后再循环移位获得。 3. The method according to claim 1, wherein the 66-bit gene block is expressed in binary as: or obtained by inverting or mirroring or cyclically shifting the gene block, or negating by the gene block or Recycled shift after mirroring is obtained.

4、如权利要求 1所述的方法，其特征在于，所述 66比特的基因块用二进制表示为： 4. The method of claim 1, wherein the 66-bit gene block is expressed in binary as:

或 Or

10] 10]

或由以上任一基因块取反或镜像或循环移位获得，或者上述基因块取反或镜像后再循环移位获得。 Or obtained by inverting or mirroring or cyclically shifting any of the above gene blocks, or by reversing or mirroring the above gene blocks.

5、一种提供无源光网络***中上行突发数据的装置，其特征在于，所述装置包括： 5. An apparatus for providing uplink burst data in a passive optical network system, the apparatus comprising:

提供上行突发数据的同步模式序列的单元，所述同步模式序列长度为 66 比特的整数倍，由 66比特的基因块为单位连接而成； Providing a unit of a synchronization pattern sequence of uplink burst data, wherein the synchronization pattern sequence length is an integer multiple of 66 bits, and is connected by a 66-bit gene block unit;

6、如权利要求 5所述的装置，其特征在于，所述同步模式序列为直流平衡序列，并且其二进制码中 0和 1的游程相同，最大游程为 6。 6. The apparatus according to claim 5, wherein the synchronization pattern sequence is a DC balance sequence, and the run lengths of 0 and 1 in the binary code are the same, and the maximum run length is 6.

7、如权利要求 5所述的装置，其特征在于，提供所述上行突发数据的同步模式序列的单元所提供的所述 66比特的基因块用二进制表示为：或者由上述基因块取反或镜像或循环移位获得，或者由上述基因块取反或镜像后再循环移位获得。 7. The apparatus according to claim 5, wherein the 66-bit gene block provided by the unit providing the synchronization pattern sequence of the uplink burst data is expressed in binary as: or is inverted by the gene block. Or obtained by mirroring or cyclic shifting, or by reversing or mirroring the above gene block.

8、如权利要求 5所述的装置，其特征在于，提供所述上行突发数据的同步模式序列的单元所提供的所述 66比特的基因块用二进制表示为：或 8. The apparatus according to claim 5, wherein the 66-bit gene block provided by the unit providing the synchronization pattern sequence of the uplink burst data is expressed in binary as:

10( 10(

或 Or

10( 10(

或

or

或由以上任一基因块取反或镜像或循环移位获得，或者由上述基因块取反或镜像后再循环移位获得。 Or obtained by inverting or mirroring or cyclically shifting any of the above gene blocks, or by reversing or mirroring the above gene block.

9、一种由比特流组成的信号，所述信号为无源光网络***中上行突发数据，其特征在于，所述信号以长度为 66比特的基因块为单位首尾连接而成的同步模式序列、突发定界符、受前向纠错保护的数据及突发结束定界符组成，所述信号的长度为 66比特的整数倍。 9. A signal consisting of a bit stream, wherein the signal is uplink burst data in a passive optical network system, wherein the signal is connected in a synchronous mode with a 66-bit gene block as a unit. The sequence, the burst delimiter, the data protected by the forward error correction, and the burst end delimiter, the length of the signal is an integer multiple of 66 bits.

10、如权利要求 9所述的信号，其特征在于，所述同步模式序列为直流平衡序列，并且其二进制码中 0和 1的游程相同，最大游程为 6。 The signal according to claim 9, wherein the synchronization pattern sequence is a DC balance sequence, and the run lengths of 0 and 1 in the binary code are the same, and the maximum run length is 6.

11、如权利要求 9所述的信号，其特征在于，所述 66比特的基因块用二进制表示为：或者由上述基因块取反或镜像或循环移位获得，或者由上述基因块取反或镜像后再循环移位获得。 11. The signal according to claim 9, wherein the 66-bit gene block is expressed in binary as: or obtained by negating or mirroring or cyclically shifting the gene block, or by negating the gene block or Recycled shift after mirroring is obtained.

12、如权利要求 9所述的信号，其特征在于，所述 66比特的基因块用二进制表示为： 12. The signal according to claim 9, wherein said 66-bit gene block is expressed in binary as:

或者由上述基因块取反或镜像或循环移位获得，或者由上述基因块取反或镜像后再循环移位获得。 Alternatively, it may be obtained by inverting or mirroring or cyclically shifting the above gene block, or by reversing or mirroring the above gene block to obtain a recirculating shift.

13、一种无源光网络中发送上行突发数据的方法，其特征在于，所述方法为： A method for transmitting uplink burst data in a passive optical network, wherein the method is:

发送突发定界符； Send a burst delimiter;

发送数据净荷。 Send the data payload.

14、如权利要求 13所述的方法，其特征在于，所述同步模式序列为直流平衡序列， 0和 1的游程相同，最大游程为 4。 14. The method according to claim 13, wherein the synchronous mode sequence is a DC balanced sequence, and the runs of 0 and 1 are the same, and the maximum run is 4.

15、如权利要求 13所述的方法，其特征在于，所述 32比特的基因块用二进制表示为： 15. The method of claim 13, wherein the 32-bit gene block is expressed in binary as:

10111011010100100001111000100110, 或 10111011010100100001111000100110, or

00010011010011110111010000101011，或 00010011010011110111010000101011, or

11010011011100101011110100010000, 或 11010011011100101011110100010000, or

11110001001101011101101010010000, 或 11110001001101011101101010010000, or

10111011110010110010001101010000, 或 10111011110010110010001101010000, or

10101100010011010011110111010000, 或 10101100010011010011110111010000, or

10001011110101001110110010110000，或 11110110101001000101001101110000, 或 10001011110101001110110010110000, or 11110110101001000101001101110000, or

10010101101110101100100011110000, 或 10010101101110101100100011110000, or

11101100101000100101011011110000, 或 11101100101000100101011011110000, or

由以上任一基因块取反或镜像或循环移位获得，或者由上述基因块取反或镜像后再循环移位获得。 Obtained by reversing or mirroring or cyclically shifting any of the above gene blocks, or by reversing or mirroring the above gene blocks and recirculating and shifting.

16、一种无源光网络中发送上行突发的装置，其特征在于，所述装置包括：同步模式序列发送单元，用于发送同步模式序列，所述同步模式序列长度为 32比特的整数倍，由 32比特的基因块为单位连接而成； A device for transmitting an uplink burst in a passive optical network, the device comprising: a synchronization mode sequence sending unit, configured to send a synchronization mode sequence, the synchronization mode sequence length being an integer multiple of 32 bits , connected by 32-bit gene blocks;

17、如权利要求 16所述的装置，其特征在于，所述同步模式序列发送单元所发送的同步模式序列为为直流平衡序列，并且 0和 1的游程相同，最大游程为 4。 The apparatus according to claim 16, wherein the synchronous mode sequence sent by the synchronous mode sequence transmitting unit is a DC balanced sequence, and the runs of 0 and 1 are the same, and the maximum run is 4.

18、如权利要求 16所述的装置，其特征在于，所述同步模式序列发送单元所发送的同步模式序列中的所述 32比特的基因块用二进制表示为： 18. The apparatus according to claim 16, wherein the 32-bit gene block in the synchronization pattern sequence transmitted by the synchronization mode sequence transmitting unit is expressed in binary as:

10111011010100100001111000100110，或 10111011010100100001111000100110, or

00010011010011110111010000101011 , 或 00010011010011110111010000101011, or

11010011011100101011110100010000, 或 11010011011100101011110100010000, or

11110001001101011101101010010000, 或 11110001001101011101101010010000, or

10111011110010110010001101010000, 或 10111011110010110010001101010000, or

10101100010011010011110111010000，或 10101100010011010011110111010000, or

10001011110101001110110010110000, 或 10001011110101001110110010110000, or

11110110101001000101001101110000, 或 11110110101001000101001101110000, or

10010101101110101100100011110000, 或 10010101101110101100100011110000, or

11101100101000100101011011110000, 或 11101100101000100101011011110000, or

由以上任一基因块取反或镜像或循环移位获得，或者由上述基因块取反或镜像后再循环移位获得。 Obtained by any of the above gene blocks, inverted or mirrored or cyclically shifted, or inverted by the above gene block or Recycled shift after mirroring is obtained.

19、一种由比特流组成的信号，所述信号为无源光网络***中上行突发数据，其特征在于，所述信号包括： 19. A signal consisting of a bit stream, the signal being an uplink burst data in a passive optical network system, wherein the signal comprises:

长度为 32比特的整数倍并以 32比特的基因块为单位连接而成的同步模式序列， a synchronous pattern sequence of 32-bit integer multiples connected in units of 32-bit gene blocks,

突发定界符， Burst delimiter,

用于检测链路误码率、光网络单元标识和光网络单元的实时状态报告的突发帧头，传输会聚层数据帧头，及 a burst header for detecting a link error rate, an optical network unit identity, and a real-time status report of the optical network unit, transmitting a convergence layer data frame header, and

发送数据净荷。 Send the data payload.

20、如权利要求 19所述的信号，其特征在于，所述同步模式序列为直流平衡序列， 0和 1的游程相同，最大游程为 4。 The signal according to claim 19, wherein the synchronous mode sequence is a DC balanced sequence, and the runs of 0 and 1 are the same, and the maximum run is 4.

21、如权利要求 19所述的方法，其特征在于，所述 32比特的基因块用二进制表示为： 21. The method of claim 19, wherein the 32-bit gene block is expressed in binary as:

10111011010100100001111000100110，或 10111011010100100001111000100110, or

00010011010011110111010000101011 , 或 00010011010011110111010000101011, or

11010011011100101011110100010000, 或 11010011011100101011110100010000, or

11110001001101011101101010010000, 或 11110001001101011101101010010000, or

10111011110010110010001101010000，或 10111011110010110010001101010000, or

10101100010011010011110111010000，或 10101100010011010011110111010000, or

10001011110101001110110010110000, 或 10001011110101001110110010110000, or

11110110101001000101001101110000, 或 11110110101001000101001101110000, or

10010101101110101100100011110000, 或 10010101101110101100100011110000, or

11101100101000100101011011110000, 或 11101100101000100101011011110000, or