WO2021254225A1

WO2021254225A1 - Optical signal processing method, optical transceiver, controller and optical line terminal

Info

Publication number: WO2021254225A1
Application number: PCT/CN2021/099090
Authority: WO
Inventors: 林华枫; 李远谋; 曾小飞
Original assignee: 华为技术有限公司
Priority date: 2020-06-20
Filing date: 2021-06-09
Publication date: 2021-12-23
Also published as: CN113824506A; CN113824506B

Abstract

The embodiments of the present disclosure relate to an optical signal processing method, an optical transceiver, a controller, and an optical line terminal. The optical line terminal comprises an optical transceiver and a controller. The optical transceiver comprises a receiver, the receiver comprising: an optical detector configured to receive an optical signal from an optical network unit; and an amplifier coupled to the optical detector and configured to receive an indication signal from a controller for indicating the working mode of the controller and adjust optical processing parameters of the receiver for the optical signal on the basis of the indication signal. The controller comprises a first signal generator configured to generate the indication signal and provide the indication signal to the optical transceiver. According to the solutions of the embodiments of the present disclosure, the stability and accuracy of optical receiving processing at an optical line terminal side can be ensured. In addition, the design complexity of an optical transceiver, especially an amplifier, can be reduced, and the high integration of an optical line terminal is promoted.

Description

光信号处理方法、光收发器、控制器和光线路终端Optical signal processing method, optical transceiver, controller and optical line terminal

本申请要求于2020年6月20日提交中国国家知识产权局、申请号为202010569549.8、申请名称为“光信号处理方法、光收发器、控制器和光线路终端”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。This application requires the priority of a Chinese patent application filed with the State Intellectual Property Office of China, the application number is 202010569549.8, and the application name is "optical signal processing method, optical transceiver, controller and optical line terminal" on June 20, 2020. The entire content is incorporated into this application by reference.

技术领域Technical field

本公开的实施例涉及光通信领域，更具体地涉及光线路终端(OLT：Optical Line Terminal)处的光信号的接收处理。The embodiments of the present disclosure relate to the field of optical communications, and more specifically to the receiving and processing of optical signals at an optical line terminal (OLT: Optical Line Terminal).

背景技术Background technique

当前，主流使用的光纤接入方式是无源光网络(PON：Passive Optical Network)***。PON***包括局端的OLT和终端侧的光网络单元(ONU：Optical Network Unit)。一个OLT可以接收来自多个ONU的经时分复用(TDMA：Time Division Multiple Access)后的光信号，也称为上行光。由于来自每个ONU的光信号在幅度和时间长度上可能都存在差异，因此如何针对这些光信号快速调整OLT的光处理参数，以便正确处理和识别这些光信号，一直是本领域的研究热点。Currently, the mainstream optical fiber access method is the Passive Optical Network (PON: Passive Optical Network) system. The PON system includes an OLT at the central office and an optical network unit (ONU: Optical Network Unit) at the terminal side. One OLT can receive time division multiplexed (TDMA: Time Division Multiple Access) optical signals from multiple ONUs, which is also called upstream light. Since the optical signals from each ONU may have differences in amplitude and time length, how to quickly adjust the optical processing parameters of the OLT for these optical signals in order to correctly process and identify these optical signals has always been a research hotspot in this field.

通常，在ONU上电时需要与OLT进行交互来完成注册上线，并且在完成注册上线后才能进行正常的数据收发。然而，在该注册上线过程中，由于OLT无法预测ONU何时上电，也就是无法预测上行光到达的时刻，导致OLT可能无法在合适的时刻调整光处理参数，甚至有时会无法启动对光处理参数的调整，从而无法正确处理和识别来自ONU的上行光，甚至导致无法注册上线。Generally, when the ONU is powered on, it needs to interact with the OLT to complete the registration and go online, and normal data transmission and reception can be performed after the registration and go online are completed. However, during the registration process, the OLT cannot predict when the ONU will be powered on, that is, the time when the upstream light arrives. As a result, the OLT may not be able to adjust the optical processing parameters at the appropriate time, and sometimes it may not be able to start the optical processing. The adjustment of the parameters prevents the correct processing and identification of the upstream light from the ONU, and even makes it impossible to register and go online.

发明内容Summary of the invention

总体上，本公开的实施例提供一种OLT处的改进的光接收处理方案。In general, the embodiments of the present disclosure provide an improved optical receiving processing solution at the OLT.

根据本公开实施例的第一方面，提供一种在光收发器处实施的光信号处理方法。该方法包括：光收发器接收来自光网络单元的光信号；所述光收发器接收来自控制器的指示信号，所述指示信号用于指示所述控制器的工作模式；以及基于所述指示信号，所述光收发器调整所述光收发器中的接收器针对所述光信号的光处理参数。According to a first aspect of the embodiments of the present disclosure, there is provided an optical signal processing method implemented at an optical transceiver. The method includes: an optical transceiver receives an optical signal from an optical network unit; the optical transceiver receives an instruction signal from a controller, the instruction signal is used to indicate the operating mode of the controller; and based on the instruction signal , The optical transceiver adjusts the optical processing parameters of the receiver in the optical transceiver for the optical signal.

根据本公开实施例的第二方面，提供一种在控制器处实施的光信号处理方法。该方法包括：控制器生成指示信号，所述指示信号指示所述控制器的工作模式；以及所述控制器向光收发器提供所述指示信号，以使得所述光收发器基于所述指示信号调整所述光收发器的接收器的光处理参数。According to a second aspect of the embodiments of the present disclosure, there is provided an optical signal processing method implemented at a controller. The method includes: a controller generates an instruction signal, the instruction signal indicating the operating mode of the controller; and the controller provides the instruction signal to an optical transceiver so that the optical transceiver is based on the instruction signal Adjust the optical processing parameters of the receiver of the optical transceiver.

根据本公开实施例的第三方面，提供一种光收发器。该光收发器包括：接收器，被配置用于接收来自光网络单元的光信号；以及放大器，与所述接收器耦合，并且被配置用于：接收来自控制器的指示信号，所述指示信号用于指示所述控制器的工作模式；以及基于所述指示信号，调整所述接收器针对所述光信号的光处理参数。According to a third aspect of the embodiments of the present disclosure, an optical transceiver is provided. The optical transceiver includes: a receiver configured to receive an optical signal from an optical network unit; and an amplifier coupled to the receiver and configured to: receive an instruction signal from a controller, the instruction signal For indicating the operating mode of the controller; and adjusting the optical processing parameters of the receiver for the optical signal based on the indicating signal.

根据本公开实施例的第四方面，提供一种控制器。该控制器包括：第一信号发生器，被配置用于：生成指示信号，所述指示信号指示所述控制器的工作模式；以及向光收发器提供所述指示信号，以使得所述光收发器基于所述指示信号调整所述光收发器中的接收器的光处理参数。According to a fourth aspect of an embodiment of the present disclosure, there is provided a controller. The controller includes: a first signal generator configured to: generate an instruction signal, the instruction signal indicating the operating mode of the controller; and provide the instruction signal to the optical transceiver, so that the optical transceiver The receiver adjusts the optical processing parameters of the receiver in the optical transceiver based on the indication signal.

根据本公开实施例的第五方面，提供一种光线路终端。该光线路终端包括根据第三方面所述的光收发器和根据第四方面所述的控制器。According to a fifth aspect of the embodiments of the present disclosure, an optical line terminal is provided. The optical line terminal includes the optical transceiver according to the third aspect and the controller according to the fourth aspect.

通过下文对示例实施例的描述将会理解，根据在此提出的技术方案，可以确保在ONU注册上线期间OLT侧的光接收处理的稳定性和准确性。另外，可以降低OLT侧光接收处理的复杂度，促进OLT的高度集成化。It will be understood from the following description of the exemplary embodiments that according to the technical solution proposed here, the stability and accuracy of the optical receiving process on the OLT side during the ONU registration and online period can be ensured. In addition, the complexity of the optical receiving process at the OLT side can be reduced, and the high integration of the OLT can be promoted.

应当理解，发明内容部分中所描述的内容并非旨在限定本公开实施例的关键或重要特征，亦非用于限制本公开的范围。本公开的其它特征将通过以下的描述变得容易理解。It should be understood that the content described in the content of the invention is not intended to limit the key or important features of the embodiments of the present disclosure, nor is it intended to limit the scope of the present disclosure. Other features of the present disclosure will be easily understood by the following description.

附图说明Description of the drawings

结合附图并参考以下详细说明，本公开各实施例的上述和其他特征、优点及方面将变得更加明显。在附图中，相同或相似的附图标记表示相同或相似的元素，其中：With reference to the accompanying drawings and with reference to the following detailed description, the above and other features, advantages, and aspects of the embodiments of the present disclosure will become more apparent. In the drawings, the same or similar reference signs indicate the same or similar elements, in which:

图1示出了本公开实施例可在其中实施的示例通信***的示意图；Figure 1 shows a schematic diagram of an example communication system in which embodiments of the present disclosure may be implemented;

图2示出了在根据传统方案的OLT侧的光接收处理过程的示意图；Fig. 2 shows a schematic diagram of the optical receiving process on the OLT side according to the conventional scheme;

图3示出了根据本公开一个实施例的光线路终端的示意结构框图；Fig. 3 shows a schematic structural block diagram of an optical line terminal according to an embodiment of the present disclosure;

图4示出了根据本公开一个实施例的光信号处理方法的流程图；Fig. 4 shows a flowchart of an optical signal processing method according to an embodiment of the present disclosure;

图5示出了根据本公开一个实施例的调整光处理参数的方法的流程图；以及Fig. 5 shows a flowchart of a method for adjusting light processing parameters according to an embodiment of the present disclosure; and

图6示出了根据本公开一个实施例的光信号处理方法的流程图。Fig. 6 shows a flowchart of an optical signal processing method according to an embodiment of the present disclosure.

具体实施方式detailed description

下面将参照附图更详细地描述本公开的实施例。虽然附图中示出了本公开的一些实施例，然而应当理解的是，本公开可以通过各种形式来实现，而且不应该被解释为限于这里阐述的实施例，相反提供这些实施例是为了更加透彻和完整地理解本公开。应当理解的是，本公开的附图及实施例仅用于示例性作用，并非用于限制本公开的保护范围。Hereinafter, embodiments of the present disclosure will be described in more detail with reference to the accompanying drawings. Although some embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be implemented in various forms and should not be construed as being limited to the embodiments set forth herein. On the contrary, these embodiments are provided for Have a more thorough and complete understanding of this disclosure. It should be understood that the drawings and embodiments of the present disclosure are only used for exemplary purposes, and are not used to limit the protection scope of the present disclosure.

在此使用的术语“包括”及其变形是开放性包括，即“包括但不限于”。术语“基于”是“至少部分地基于”。术语“一个实施例”表示“至少一个实施例”；术语“另一实施例”表示“至少一个另外的实施例”。其他术语的相关定义将在下文描述中给出。The term "including" and its variants as used herein are open-ended includes, that is, "including but not limited to". The term "based on" is "based at least in part on." The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment." Related definitions of other terms will be given in the following description.

应理解，尽管本文可以使用术语“第一”和“第二”等来描述各种元件，但这些元件不应受到这些术语的限制。这些术语仅用于区分一个元件和另一个元件。例如，第一元件可以称为第二元件，同样，第二元件可以称为第一元件，而不脱离实施例的范围。如本文所用，术语“和/或”包括一个或多个所列术语的任何和所有组合。It should be understood that although the terms "first" and "second" etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, the first element may be referred to as the second element, and similarly, the second element may be referred to as the first element without departing from the scope of the embodiment. As used herein, the term "and/or" includes any and all combinations of one or more of the listed items.

在此使用的术语“电路”是指以下的一项或多项：The term "circuit" as used herein refers to one or more of the following:

(a)仅硬件电路实现方式(诸如仅模拟和/或数字电路的实现方式)；以及(a) Only hardware circuit implementation (such as only analog and/or digital circuit implementation); and

(b)硬件电路和软件的组合，诸如(如果适用)：(i)模拟和/或数字硬件电路与软件/ 固件的组合，以及(ii)硬件处理器的任意部分与软件(包括一起工作以使得诸如光线路终端(OLT)或其他计算设备等装置执行各种功能的数字信号处理器、软件和存储器)；以及(b) The combination of hardware circuit and software, such as (if applicable): (i) the combination of analog and/or digital hardware circuit and software/firmware, and (ii) any part of the hardware processor and software (including working together to Digital signal processors, software, and memory that enable devices such as optical line terminals (OLT) or other computing devices to perform various functions); and

(c)硬件电路和/或处理器，诸如微处理器或者微处理器的一部分，其要求软件(例如固件)用于操作，但是在不需要软件用于操作时可以没有软件。(c) A hardware circuit and/or processor, such as a microprocessor or a part of a microprocessor, which requires software (for example, firmware) for operation, but may not have software when it is not required for operation.

电路的定义适用于此术语在本申请中(包括任意权利要求中)的所有使用场景。作为另一示例，在此使用的术语“电路”也覆盖仅硬件电路或处理器(或多个处理器)、或者硬件电路或处理器的一部分、或者其随附软件或固件的实现方式。例如，如果适用于特定权利要求元素，术语“电路”还覆盖基带集成电路或处理器集成电路或者OLT或其他计算设备中的类似的集成电路。The definition of circuit applies to all usage scenarios of this term in this application (including any claims). As another example, the term "circuit" used herein also covers only a hardware circuit or a processor (or multiple processors), or a part of a hardware circuit or a processor, or an implementation of software or firmware accompanying it. For example, if applicable to specific claim elements, the term "circuitry" also covers baseband integrated circuits or processor integrated circuits or similar integrated circuits in OLT or other computing devices.

如本文所用，术语“通信***”可以是基于PON的通信***，例如，吉比特无源光网络(G-PON：Gigabit-Capable Passive Optical Network)、10吉比特无源光网络(XG-PON:10-Gigabit-Capable Passive Optical Network)、10吉比特对称无源光网络(XGS-PON：10-Gigabit-Capable Symmetric Passive Optical Network)、50吉比特无源光网络(50G-PON：50-Gigabit-Capable Passive Optical Network)，等等。通信***也可以是任何能够实现本公开的实施例的有线或无线通信***。考虑到通信技术的快速发展，当然也会有未来类型的通信技术和***，本发明可能会与之结合。不应将其视为将本公开的范围仅限于上述***。As used herein, the term "communication system" can be a PON-based communication system, for example, Gigabit-Capable Passive Optical Network (G-PON: Gigabit-Capable Passive Optical Network), 10 Gigabit Passive Optical Network (XG-PON: 10-Gigabit-Capable Passive Optical Network, 10 Gigabit Symmetric Passive Optical Network (XGS-PON: 10-Gigabit-Capable Symmetric Passive Optical Network), 50 Gigabit Passive Optical Network (50G-PON: 50-Gigabit- Capable Passive Optical Network), etc. The communication system may also be any wired or wireless communication system capable of implementing the embodiments of the present disclosure. Considering the rapid development of communication technology, there will of course be future types of communication technologies and systems, to which the present invention may be combined. It should not be seen as limiting the scope of the present disclosure to only the aforementioned system.

图1示出了本公开实施例可在其中实施的示例通信***100的示意图。如图1所示，该***100可以是PON***，该PON***包括ONU 111、112和113(为方便起见，下面也可以将它们统称为ONU 110)以及OLT 120。ONU 111、112和113可以经由分光器130而与OLT 120通信。应理解到，ONU 110的数目并不限于图1所示的示例，而是可以包括更多或更少的数目，并且OLT 120的数目也不限于图1所示的示例，而是可以包括更多的数目。此外，它们的实施也不限于上述具体示例，而是可以以任意合适的方式实施。Figure 1 shows a schematic diagram of an example communication system 100 in which embodiments of the present disclosure may be implemented. As shown in FIG. 1, the system 100 may be a PON system, and the PON system includes ONUs 111, 112, and 113 (for convenience, they may also be collectively referred to as ONUs 110 below) and an OLT 120. The

ONUs

111, 112, and 113 can communicate with the OLT 120 via the optical splitter 130. It should be understood that the number of ONUs 110 is not limited to the example shown in FIG. 1, but may include more or less numbers, and the number of OLT 120 is not limited to the example shown in FIG. 1, but may include more Much number. In addition, their implementation is not limited to the above-mentioned specific examples, but can be implemented in any suitable manner.

在图1所示的PON***100中包括下行传输和上行传输。下行传输是指从OLT 120至ONU 110的数据传输(在本文中也称为光信号传输)，上行传输是指从ONU 110至OLT 120的数据传输。通常，下行传输是采用广播方式传输数据。在OLT 120处，下行数据流被封装成为以太网报文，并且被附加相应的标识符(ID：Identity)，ONU 111、112和113与不同的ID相关联。在分光器130处，下行数据流将被分为三组信号广播到每个支路，因此所有的ONU 111、112和113都将收到相同的数据。ONU 111、112和113接收到OLT 120发送来的数据后，根据ID对数据流进行判断是进行处理还是进行丢弃。例如，处理ID与其相关联的数据流，而丢弃ID与其无关的数据流，反之亦然。这里需要指出的是，下行数据流被划分的组数可以与所对应的ONU的数目相关联。该组数并不限于上述具体示例数目，而是可以为更多或更少的数目。The PON system 100 shown in FIG. 1 includes downstream transmission and upstream transmission. Downstream transmission refers to data transmission from OLT 120 to ONU 110 (also referred to as optical signal transmission in this document), and upstream transmission refers to data transmission from ONU 110 to OLT 120. Usually, the downlink transmission is to transmit data by broadcasting. At the OLT 120, the downstream data stream is encapsulated into an Ethernet packet, and a corresponding identifier (ID: Identity) is attached, and the

ONUs

111, 112, and 113 are associated with different IDs. At the optical splitter 130, the downstream data stream will be divided into three groups of signals and broadcast to each branch, so all

ONUs

111, 112, and 113 will receive the same data. After the

ONUs

111, 112, and 113 receive the data sent by the OLT 120, they determine whether to process or discard the data stream based on the ID. For example, process ID and its associated data stream, and discard the ID and its irrelevant data stream, and vice versa. What needs to be pointed out here is that the number of groups that the downstream data stream is divided into can be related to the number of corresponding ONUs. The number of groups is not limited to the number of specific examples described above, but may be a larger or smaller number.

上行传输是通过TDMA方式传输光信号。例如，当ONU 111、112和113注册上线成功后，OLT 120会根据数据业务类型等配置信息来给ONU 111、112和113分配特定的带宽，即数据传输时分配的时隙，以进行数据传输。ONU 111、112和113在各自所属时隙到来时进行数据传输，按次序发送数据，避免了上行数据冲突。ONU 111、112和113在所属时隙发送的相应光信号，经分光器130聚合后形成经时分复用的光信号，该光信号被发往OLT 120。Uplink transmission is to transmit optical signals through TDMA. For example, after

ONU

111, 112, and 113 successfully register and go online, OLT 120 will allocate specific bandwidth to

ONU

111, 112, and 113 according to the configuration information such as the data service type, that is, the time slot allocated during data transmission for data transmission. .

ONU

111, 112, and 113 perform data transmission when their respective time slots arrive, and send data in order to avoid upstream data conflicts. The corresponding optical signals sent by the

ONUs

111, 112, and 113 in their time slots are aggregated by the optical splitter 130 to form a time-division multiplexed optical signal, and the optical signal is sent to the OLT 120.

由于每个ONU 110的业务类型以及与OLT 120的距离通常会存在差异，因此来自每个 ONU 110的光信号在幅度和时间长度上也存在差异。因此，在OLT 120处如何从接收到的光信号中恢复出每个ONU 110的光信号，始终是备受关注的研究热点。Since the service type of each ONU 110 and the distance from the OLT 120 usually differ, the optical signal from each ONU 110 also differs in amplitude and time length. Therefore, how to recover the optical signal of each ONU 110 from the received optical signal at the OLT 120 has always been a research hotspot that has attracted much attention.

通常，OLT 120可以包括两种工作模式：开窗模式和数据收发模式。在开窗模式下，OLT 120可以为要上线的ONU分配特定时隙，以便接收来自该ONU的光信号，并执行测距处理，从而完成注册上线。OLT 120可以每隔预定时间就切换到开窗模式，以便发现新的要上线的ONU并将其纳入PON***。ONU注册上线完成后，OLT 120可以进入数据收发模式，以执行正常的数据收发。Generally, the OLT 120 may include two working modes: a windowing mode and a data receiving and sending mode. In the windowing mode, the OLT 120 can allocate a specific time slot for the ONU to go online, so as to receive the optical signal from the ONU, and perform ranging processing, thereby completing the registration and going online. The OLT 120 can switch to the windowing mode every predetermined time, so as to find a new ONU to go online and incorporate it into the PON system. After the ONU is registered and online, the OLT 120 can enter the data transmission and reception mode to perform normal data transmission and reception.

如图1所示，OLT 120可以包括光收发器121和控制器122。光收发器121可以包括发送器141和接收器142。应理解到，OLT 120和光收发器121还可以包括其它附加模块，而不限于这里的示例。发送器141用于将来自控制器122的待发送至ONU 110的发送数据转换成下行光信号，并经由分光器130提供给ONU 110。接收器142用于接收来自ONU 110的上行光信号并将该上行光信号转换成电信号，进而提供给控制器122。As shown in FIG. 1, the OLT 120 may include an optical transceiver 121 and a controller 122. The optical transceiver 121 may include a transmitter 141 and a receiver 142. It should be understood that the OLT 120 and the optical transceiver 121 may also include other additional modules, and are not limited to the examples here. The transmitter 141 is configured to convert the transmission data to be sent to the ONU 110 from the controller 122 into a downstream optical signal, and provide the downstream optical signal to the ONU 110 via the optical splitter 130. The receiver 142 is configured to receive the upstream optical signal from the ONU 110 and convert the upstream optical signal into an electrical signal, which is then provided to the controller 122.

然而，在开窗模式下，由于控制器无法预测ONU的上行光到达的时刻，在传统方案中通常无法在合适的时刻复位接收器。下面结合图2对此进行详细说明。However, in the windowing mode, since the controller cannot predict the time when the upstream light of the ONU arrives, it is usually impossible to reset the receiver at an appropriate time in the traditional solution. This will be described in detail below with reference to FIG. 2.

图2示出了在根据传统方案的OLT 200侧的光接收处理过程的示意图。如图2所示，OLT 200可以包括光收发器的接收器210和控制器220。为了简洁起见，这里未示出光收发器的发送器。接收器210可以包括光检测器201、跨阻放大器(TIA：Trans-Impedance Amplifier)202和限幅放大器(LA：Limiting Amplifier)203。来自ONU 110的光信号通过光检测器201可以转换成电流信号，该电流信号通过TIA 202可以转换成电压信号并被放大。经放大的电压信号通过LA 203可以转换成标准数字电平信号，该标准数字电平信号作为光收发器310的接收数据输出RX而输出至控制器220。Fig. 2 shows a schematic diagram of the optical receiving process on the OLT 200 side according to the conventional solution. As shown in FIG. 2, the OLT 200 may include a receiver 210 of an optical transceiver and a controller 220. For the sake of brevity, the transmitter of the optical transceiver is not shown here. The receiver 210 may include a photodetector 201, a transimpedance amplifier (TIA: Trans-Impedance Amplifier) 202, and a limiting amplifier (LA: Limiting Amplifier) 203. The optical signal from the ONU 110 can be converted into a current signal by the photodetector 201, and the current signal can be converted into a voltage signal by the TIA 202 and amplified. The amplified voltage signal can be converted into a standard digital level signal through the LA 203, and the standard digital level signal is output to the controller 220 as the received data output RX of the optical transceiver 310.

传统上，针对控制器220无法预测上行光到达时刻的问题，将LA 203设计为当光检测器201检测到光信号时就输出检测信号SD并提供给控制器220，从而可以使得控制器220获知接收器210已接收到光信号。在接收到检测信号SD时，控制器220可以向接收器210发送复位信号RESET，用于复位接收器210。然而，为了降低TIA 202的设计难度，在一些情况下，会将TIA 202设计成基于复位信号来工作。在又一些情况下，也可将LA 203设计成基于该复位信号RESET来工作。在数据收发模式中，控制器220可以根据动态带宽分配(DBA：Dynamic Bandwidth Allocation)信息确定ONU上行光的具体到达时刻，进而可以在合适的时刻输出复位信号RESET，从而使TIA 202和LA 203可以基于该复位信号RESET正常工作。但是，在开窗模式下，控制器220无法预测ONU上行光的到达时刻，进而也就无法提供复位信号RESET。这将导致TIA 202和LA 203无法正常工作，也就无法向控制器220提供检测信号SD。在没有检测信号SD的情况下，控制器220无法输出复位信号RESET，导致发生死循环。Traditionally, in view of the problem that the controller 220 cannot predict the arrival time of the upstream light, the LA 203 is designed to output the detection signal SD when the light detector 201 detects the light signal and provide it to the controller 220, so that the controller 220 can know The receiver 210 has received the optical signal. Upon receiving the detection signal SD, the controller 220 may send a reset signal RESET to the receiver 210 for resetting the receiver 210. However, in order to reduce the design difficulty of the TIA 202, in some cases, the TIA 202 is designed to work based on the reset signal. In other cases, the LA 203 can also be designed to work based on the reset signal RESET. In the data transceiver mode, the controller 220 can determine the specific arrival time of the upstream light of the ONU according to the dynamic bandwidth allocation (DBA: Dynamic Bandwidth Allocation) information, and then can output the reset signal RESET at an appropriate time, so that the TIA 202 and LA 203 can RESET works normally based on this reset signal. However, in the windowing mode, the controller 220 cannot predict the arrival time of the upstream light of the ONU, and thus cannot provide the reset signal RESET. This will cause the TIA 202 and LA 203 to fail to work normally, and thus fail to provide the detection signal SD to the controller 220. Without the detection signal SD, the controller 220 cannot output the reset signal RESET, resulting in an endless loop.

有鉴于已知方案中有待改进之处，本公开的实施例提出了一种改进的光接收处理方案。一般而言，根据在此提出的技术方案中，将控制器的工作模式通知给光收发器，使得光收发器可以基于工作模式来适时调整接收器的光处理参数，从而确保对光信号的处理。为便于理解，下面结合图3至图6详细描述本公开的各种示例实施例。In view of the points to be improved in the known solutions, the embodiments of the present disclosure propose an improved light receiving processing solution. Generally speaking, according to the technical solution proposed here, the working mode of the controller is notified to the optical transceiver, so that the optical transceiver can adjust the optical processing parameters of the receiver based on the working mode, so as to ensure the processing of the optical signal. . For ease of understanding, various exemplary embodiments of the present disclosure will be described in detail below with reference to FIGS. 3 to 6.

图3示出了根据本公开一个实施例的OLT 300的示意结构框图。该OLT 300可以作为图 1的OLT 120或者作为其一部分来实施。应理解到，该OLT 300可以包括其它未示出的附加组件或者省略其中示出的一些组件，本公开实施例对此并不做任何限制。Fig. 3 shows a schematic structural block diagram of an OLT 300 according to an embodiment of the present disclosure. The OLT 300 can be implemented as the OLT 120 in FIG. 1 or as a part of it. It should be understood that the OLT 300 may include other additional components not shown or some components shown therein are omitted, and the embodiment of the present disclosure does not impose any limitation on this.

如图3所示，OLT 300包括光收发器310和控制器320。该光收发器310可以作为图1的光收发器121或者作为其一部分来实施。该控制器320可以作为图1的控制器122或者作为其一部分来实施。为了方便起见，下面将结合图1示出的示例***来进行描述。但是应当理解，本公开的实施例也可以用于目前已知或者将来开发的其他适当环境或者***。As shown in FIG. 3, the OLT 300 includes an optical transceiver 310 and a controller 320. The optical transceiver 310 may be implemented as or as a part of the optical transceiver 121 of FIG. 1. The controller 320 may be implemented as or as a part of the controller 122 of FIG. 1. For convenience, the following description will be made in conjunction with the example system shown in FIG. 1. However, it should be understood that the embodiments of the present disclosure can also be used in other appropriate environments or systems currently known or developed in the future.

如图3所示，光收发器310可以包括接收器311。该光收发器310可以包括其它未示出的附加组件，本公开实施例对此并不做任何限制。接收器311可以作为图1的接收器142或者作为其一部分来实施。接收器311可以包括光检测器331和放大器332。应理解到，该接收器311可以包括其它未示出的附加组件或者省略其中示出的一些组件，本公开实施例对此并不做任何限制。As shown in FIG. 3, the optical transceiver 310 may include a receiver 311. The optical transceiver 310 may include other additional components that are not shown, and the embodiment of the present disclosure does not impose any limitation on this. The receiver 311 may be implemented as or as a part of the receiver 142 of FIG. 1. The receiver 311 may include a light detector 331 and an amplifier 332. It should be understood that the receiver 311 may include other additional components not shown or some components shown therein are omitted, and the embodiment of the present disclosure does not impose any limitation on this.

光检测器331被配置用于接收来自ONU 110的光信号。在一些实施例中，光检测器331可以进一步将接收到的光信号转换成电流信号，并将电流信号提供给与光检测器331耦合的放大器332。放大器332被配置用于接收来自控制器320的指示信号MODE，该指示信号MODE用于指示控制器320的工作模式。通过这样的方式，放大器332就可以实时获知控制器320的工作模式，从而适当调整其操作。The optical detector 331 is configured to receive the optical signal from the ONU 110. In some embodiments, the photodetector 331 may further convert the received optical signal into a current signal, and provide the current signal to the amplifier 332 coupled with the photodetector 331. The amplifier 332 is configured to receive an instruction signal MODE from the controller 320, and the instruction signal MODE is used to indicate the operating mode of the controller 320. In this way, the amplifier 332 can learn the operating mode of the controller 320 in real time, so as to appropriately adjust its operation.

控制器320的工作模式可以为开窗模式或数据收发模式。在本公开的上下文中，“开窗模式”是指控制器320为要上线的ONU分配特定时隙，以便接收来自该ONU的光信号，并执行测距处理，从而完成这些ONU的注册上线。“数据收发模式”是指控制器320根据***配置为已注册上线的ONU分配特定带宽，从而进行数据传输。当然，本公开实施例并不限于此，控制器320也可以包括其它已有或未来开发的工作模式。The working mode of the controller 320 may be a windowing mode or a data transceiving mode. In the context of the present disclosure, "window mode" means that the controller 320 allocates specific time slots for ONUs to go online so as to receive optical signals from the ONUs and perform ranging processing, thereby completing the registration and going online of these ONUs. The "data transceiving mode" means that the controller 320 allocates a specific bandwidth to the registered ONUs according to the system configuration, so as to perform data transmission. Of course, the embodiment of the present disclosure is not limited to this, and the controller 320 may also include other existing or future developed working modes.

在一些实施例中，放大器332可以经由光收发器310的第一输入输出端子，从控制器320接收指示信号。在一些实施例中，第一输入输出端子可以是一个或多个管脚。当然，其它形式的第一输入输出端子也是可行的。在一些实施例中，第一输入输出端子可以专用于指示信号MODE的接收，如图3所示。以此方式，便于实现指示信号MODE的准确接收。In some embodiments, the amplifier 332 may receive an indication signal from the controller 320 via the first input/output terminal of the optical transceiver 310. In some embodiments, the first input and output terminal may be one or more pins. Of course, other forms of first input and output terminals are also feasible. In some embodiments, the first input/output terminal may be dedicated to receiving the indication signal MODE, as shown in FIG. 3. In this way, it is convenient to realize accurate reception of the indication signal MODE.

在一些备选实施例中，第一输入输出端子可以是与其它信号复用的端子。例如，指示信号MODE可以与复位信号RESET复用一个端子。作为另一示例，指示信号MODE可以与速率选择信号(图中未示出)复用一个端子。这里需要指出的是，本公开实施例并不限于此，而是指示信号MODE可以与其它任意一个或多个合适信号复用一个端子。通过端子的复用，可以减少对光收发器的硬件结构的改动，降低成本。In some alternative embodiments, the first input/output terminal may be a terminal multiplexed with other signals. For example, the indication signal MODE can be multiplexed with the reset signal RESET by one terminal. As another example, the indication signal MODE may be multiplexed with a rate selection signal (not shown in the figure) by multiplexing one terminal. It should be pointed out here that the embodiments of the present disclosure are not limited to this, but the indication signal MODE can be multiplexed with any other suitable signal or signals to one terminal. Through the multiplexing of the terminals, the modification of the hardware structure of the optical transceiver can be reduced, and the cost can be reduced.

放大器332还被配置用于基于指示信号MODE来调整接收器311针对光信号的光处理参数。在一些实施例中，放大器332可以基于指示信号MODE来确定控制器320的工作模式，并且基于工作模式，调整针对光信号的光处理参数。在一些实施例中，指示信号MODE的特征用于指示控制器320的工作模式。例如，指示信号MODE的特征可以是信号的幅度、频率、相位等。应理解到，上述关于特征的示例仅仅是说明性的，而非限制性的，其他适当的特征也是可行的。The amplifier 332 is also configured to adjust the optical processing parameters of the receiver 311 for the optical signal based on the indication signal MODE. In some embodiments, the amplifier 332 may determine the operating mode of the controller 320 based on the indication signal MODE, and adjust the optical processing parameters for the optical signal based on the operating mode. In some embodiments, the characteristic of the indicator signal MODE is used to indicate the operating mode of the controller 320. For example, the characteristic of the indicator signal MODE may be the amplitude, frequency, phase, etc. of the signal. It should be understood that the above examples of features are only illustrative and not restrictive, and other appropriate features are also feasible.

在一些实施例中，当指示信号MODE为第一电平时，放大器332可以确定控制器122的工作模式为开窗模式，并且当指示信号MODE为与第一电平不同的第二电平时，放大器332 可以确定控制器122的工作模式为数据收发模式。例如，第一电平和第二电平可以在幅度、频率和相位中的至少一项上不同。In some embodiments, when the indicating signal MODE is at the first level, the amplifier 332 may determine that the operating mode of the controller 122 is the windowing mode, and when the indicating signal MODE is at a second level different from the first level, the amplifier 332 may 332 It can be determined that the working mode of the controller 122 is the data transceiving mode. For example, the first level and the second level may be different in at least one of amplitude, frequency, and phase.

在一些实施例中，第一电平和第二电平具有不同的幅度值。为方便描述，下文将第一电平所具有的幅度值称为“第一幅度值”，并且将第二电平所具有的幅度值称为“第二幅度值”。第一幅度值可以大于亦可小于第二幅度值。In some embodiments, the first level and the second level have different amplitude values. For the convenience of description, the amplitude value of the first level is referred to as the "first amplitude value", and the amplitude value of the second level is referred to as the "second amplitude value" below. The first amplitude value can be larger or smaller than the second amplitude value.

备选地或者附加地，在一些实施例中，第一电平和第二电平具有不同的持续时间。为方便描述，下文将第一电平所具有的持续时间称为“第一持续时间”，并且将第二电平所具有的持续时间称为“第二持续时间”。第一持续时间可以大于亦可小于第二持续时间。应理解到，上述实施例仅为示例，本公开实施例并不限于此，其它任意合适方式都是可行的。Alternatively or additionally, in some embodiments, the first level and the second level have different durations. For the convenience of description, the duration of the first level is referred to as the "first duration", and the duration of the second level is referred to as the "second duration". The first duration can be greater or less than the second duration. It should be understood that the above-mentioned embodiments are only examples, and the embodiments of the present disclosure are not limited thereto, and any other suitable manners are feasible.

如果指示信号MODE指示控制器320的工作模式为开窗模式，则放大器332可以通过多种方式来调整光处理参数。例如，在一些实施例中，放大器332可以通过调整增益参数来调整光处理参数。备选地或者附加地，放大器332也可以对偏置电压进行调整。又如，在一些实例中，可以调整耦合电容偏置电压、消除直流偏置，等等。注意，这些调整手段可以单独使用，也可以任意结合使用。If the indication signal MODE indicates that the working mode of the controller 320 is the windowing mode, the amplifier 332 can adjust the light processing parameters in a variety of ways. For example, in some embodiments, the amplifier 332 can adjust the light processing parameters by adjusting the gain parameters. Alternatively or additionally, the amplifier 332 may also adjust the bias voltage. For another example, in some instances, the bias voltage of the coupling capacitor can be adjusted, the DC bias can be eliminated, and so on. Note that these adjustment means can be used alone or in any combination.

作为示例，放大器332可以被实现为包括前置放大器和后置放大器。前置放大器例如可以包括TIA，后置放大器例如可以包括LA。在这些实施例中，放大器332可以根据光检测器331输出的电流信号的强度，来调整前置放大器的增益参数和偏置电压。以此方式，能够快速调整直流判决电压和选择合适的增益，生成经放大的电压信号。继而，放大器332可以调整后置放大器的耦合电容电压并且消除直流偏置。由此，可以将经放大的电压信号转换成标准数字电平信号，作为光收发器310的接收数据输出RX。仅作为示例，该标准数字电平信号可以符合诸如电流模式逻辑(CML：Current Mode Logic)、正发射极耦合逻辑(PECL：Positive Emitter-Couple Logic)、低电压差分信号(LVDS：Low Voltage Differential Signal)之类的各种标准数字电平格式。应理解到，这里仅为示例，而不是限制性的。该标准数字电平信号可以符合本领域已知或未来确定的其它任意标准数字电平格式。As an example, the amplifier 332 may be implemented to include a pre-amplifier and a post-amplifier. The pre-amplifier may include TIA, for example, and the post-amplifier may include LA, for example. In these embodiments, the amplifier 332 can adjust the gain parameter and the bias voltage of the preamplifier according to the intensity of the current signal output by the photodetector 331. In this way, it is possible to quickly adjust the DC judgment voltage and select an appropriate gain to generate an amplified voltage signal. Then, the amplifier 332 can adjust the coupling capacitor voltage of the post-amplifier and eliminate the DC offset. In this way, the amplified voltage signal can be converted into a standard digital level signal, which is output RX as the received data of the optical transceiver 310. Just as an example, the standard digital level signal can conform to current mode logic (CML: Current Mode Logic), positive emitter coupling logic (PECL: Positive Emitter-Couple Logic), and low voltage differential signal (LVDS: Low Voltage Differential Signal). ) And other standard digital level formats. It should be understood that this is only an example, not a limitation. The standard digital level signal can conform to any other standard digital level format known in the art or determined in the future.

这里需要说明的是，放大器332的构造并不限于上述示例，而是可以通过其它任意合适方式来实现。相应地，调整光处理参数的操作也不限于上述示例，其它任意合适操作也是可行的。It should be noted here that the structure of the amplifier 332 is not limited to the above example, but can be implemented in any other suitable manner. Correspondingly, the operation of adjusting the light processing parameters is not limited to the above example, and any other suitable operation is also feasible.

通过上述基于指示信号对光处理参数的调整，即使在开窗模式下，也可以实现对ONU光信号的正确处理。从而避免上述死循环的出现，并且确保实现ONU的注册上线。此外，由于光收发器能够及时获知当前工作模式，因此可以降低光收发器特别是放大器的设计复杂度。进而可以减小光收发器的尺寸，便于OLT的高度集成化。Through the above adjustment of the optical processing parameters based on the indication signal, even in the windowing mode, the correct processing of the ONU optical signal can be realized. In this way, the above-mentioned infinite loop is avoided, and the registration of ONUs is ensured to be online. In addition, since the optical transceiver can learn the current working mode in time, the design complexity of the optical transceiver, especially the amplifier, can be reduced. In turn, the size of the optical transceiver can be reduced, facilitating the high integration of the OLT.

在一些备选实施例中，如果指示信号MODE指示控制器320的工作模式为开窗模式，则放大器332可以直接复位接收器311，而无需来自控制器320的复位信号RESET。在一些实施例中，放大器332可以自主产生复位信号来直接复位接收器311。当然，也可以采用其它任意合适方式来直接复位接收器311。复位接收器311是指将接收器311的光处理参数调整到预定值。在一些实施例中，该预定值可以是预先确定的。在另一些实施例中，该预定值可以是根据需要而动态确定的。关于复位的具体实现，本公开实施例并不作任何限制。以此方式，可以更加简便快捷地实现对光处理参数的调整。In some alternative embodiments, if the indication signal MODE indicates that the operating mode of the controller 320 is the windowing mode, the amplifier 332 may directly reset the receiver 311 without the reset signal RESET from the controller 320. In some embodiments, the amplifier 332 can autonomously generate a reset signal to directly reset the receiver 311. Of course, any other suitable method can also be used to directly reset the receiver 311. Resetting the receiver 311 refers to adjusting the optical processing parameters of the receiver 311 to a predetermined value. In some embodiments, the predetermined value may be predetermined. In other embodiments, the predetermined value may be dynamically determined according to needs. Regarding the specific implementation of resetting, the embodiments of the present disclosure do not impose any limitation. In this way, the adjustment of the light processing parameters can be realized more simply and quickly.

在一些实施例中，经过上述光处理参数的调整后，放大器332可以将转换后的标准数字电平信号作为接收数据输出RX提供给控制器320作进一步处理。附加地或备选地，放大器332还可以向控制器320输出检测信号SD，用于指示光收发器310已接收光信号。进一步地，放大器332可以从控制器320接收复位信号RESET，该复位信号RESET是基于检测信号SD而产生的，并且用于指示复位接收器311。以此方式，可以使得接收器311后续进入正常操作。In some embodiments, after adjusting the above-mentioned optical processing parameters, the amplifier 332 may provide the converted standard digital level signal as the received data output RX to the controller 320 for further processing. Additionally or alternatively, the amplifier 332 may also output a detection signal SD to the controller 320 to indicate that the optical transceiver 310 has received the optical signal. Further, the amplifier 332 may receive a reset signal RESET from the controller 320, the reset signal RESET is generated based on the detection signal SD and used to instruct the receiver 311 to reset. In this way, the receiver 311 can subsequently enter the normal operation.

在一些实施例中，如果指示信号MODE指示控制器320的工作模式为数据收发模式，则放大器332可以基于来自控制器320的复位信号RESET来复位接收器311。以此方式，接收器311可以处理来自ONU 110的光信号，从而进行数据传输。In some embodiments, if the indication signal MODE indicates that the working mode of the controller 320 is the data transceiving mode, the amplifier 332 may reset the receiver 311 based on the reset signal RESET from the controller 320. In this way, the receiver 311 can process the optical signal from the ONU 110 to perform data transmission.

同样参考图3，控制器320可以包括第一信号发生器321。该第一信号发生器321被配置用于生成该指示信号MODE。在一些实施例中，第一信号发生器321可以确定控制器320的工作模式为开窗模式还是数据收发模式，并且生成指示信号MODE来指示该工作模式。例如，在一些实施例中，如果控制器320的工作模式从数据收发模式切换为开窗模式，则第一信号发生器321可以生成指示信号MODE来指示工作模式为开窗模式。如果控制器320的工作模式从开窗模式切换为数据收发模式，生成指示信号MODE来指示工作模式为数据收发模式。以此方式，可以便利地实现指示信号MODE的生成。Also referring to FIG. 3, the controller 320 may include a first signal generator 321. The first signal generator 321 is configured to generate the indication signal MODE. In some embodiments, the first signal generator 321 may determine whether the operating mode of the controller 320 is the windowing mode or the data transceiving mode, and generate an indication signal MODE to indicate the operating mode. For example, in some embodiments, if the working mode of the controller 320 is switched from the data transceiving mode to the windowing mode, the first signal generator 321 may generate the indication signal MODE to indicate that the working mode is the windowing mode. If the operating mode of the controller 320 is switched from the windowing mode to the data transceiving mode, the instruction signal MODE is generated to indicate that the operating mode is the data transceiving mode. In this way, the generation of the indication signal MODE can be conveniently realized.

在一些实施例中，第一信号发生器321可以通过指示信号MODE的特征来指示控制器320的工作模式。例如，指示信号MODE的特征可以是信号的幅度、频率、相位等。应当理解，上述关于特征的示例仅仅是说明性的，而非限制性的，其他适当的特征也是可行的。In some embodiments, the first signal generator 321 may indicate the operating mode of the controller 320 by indicating the characteristics of the signal MODE. For example, the characteristic of the indicator signal MODE may be the amplitude, frequency, phase, etc. of the signal. It should be understood that the above examples of features are only illustrative and not restrictive, and other appropriate features are also feasible.

在一些实施例中，如果确定控制器320的工作模式为开窗模式，第一信号发生器321可以生成具有第一电平的指示信号MODE来指示该开窗模式。如果确定控制器320的工作模式为数据收发模式，第一信号发生器321可以生成具有与第一电平不同的第二电平的指示信号MODE来指示该数据收发模式。例如，第一电平和第二电平可以在幅度、频率和相位中的至少一项上不同。In some embodiments, if it is determined that the operating mode of the controller 320 is the windowing mode, the first signal generator 321 may generate the indication signal MODE having the first level to indicate the windowing mode. If it is determined that the operating mode of the controller 320 is the data transceiving mode, the first signal generator 321 may generate an indication signal MODE having a second level different from the first level to indicate the data transceiving mode. For example, the first level and the second level may be different in at least one of amplitude, frequency, and phase.

沿用前面的示例，第一电平具有第一幅度值和第一持续时间，第二电平具有第二幅度值和第二持续时间。在一些实施例中，可以使得第一电平的第一幅度值大于第二电平的第二幅度值。备选地，可以使得第一幅度值小于第二幅度值。在一些备选或附加实施例中，可以使得第一电平的第一持续时间大于第二电平的第二持续时间。当然，第一持续时间小于第二持续时间也是可行的。上述实施例仅为示例，本公开实施例并不限于此，其它任意合适特征或特征的组合都是可行的。Following the previous example, the first level has a first amplitude value and a first duration, and the second level has a second amplitude value and a second duration. In some embodiments, the first amplitude value of the first level may be made greater than the second amplitude value of the second level. Alternatively, the first amplitude value may be made smaller than the second amplitude value. In some alternative or additional embodiments, the first duration of the first level may be made greater than the second duration of the second level. Of course, it is also feasible that the first duration is less than the second duration. The above-mentioned embodiments are only examples, and the embodiments of the present disclosure are not limited thereto, and any other suitable features or combinations of features are possible.

第一信号发生器321还可以被配置用于向光收发器310提供该指示信号MODE。在一些实施例中，第一信号发生器321可以经由控制器320的第二输入输出端子，向光收发器310提供指示信号MODE。在一些实施例中，第二输入输出端子可以是一个或多个管脚。应理解到，其它形式的第二输入输出端子也是可行的。在一些实施例中，第二输入输出端子可以专用于指示信号MODE的提供，如图3所示。以此方式，可以便于实现指示信号MODE的准确提供。The first signal generator 321 may also be configured to provide the indicating signal MODE to the optical transceiver 310. In some embodiments, the first signal generator 321 may provide the indicator signal MODE to the optical transceiver 310 via the second input/output terminal of the controller 320. In some embodiments, the second input and output terminal may be one or more pins. It should be understood that other forms of second input and output terminals are also feasible. In some embodiments, the second input and output terminal may be dedicated to the provision of the indication signal MODE, as shown in FIG. 3. In this way, the accurate provision of the indication signal MODE can be facilitated.

在一些备选实施例中，第二输入输出端子可以是与其它信号复用的端子。例如，指示信号MODE可以与复位信号RESET复用一个端子。作为另一示例，指示信号MODE可以与速率选择信号(图中未示出)复用一个端子。应理解到，本公开实施例并不限于此，而是指示信号MODE可以与其它任意一个或多个合适信号复用一个端子。通过端子的复用，可以减少对控制器的硬件结构的改动，降低成本。In some alternative embodiments, the second input and output terminal may be a terminal multiplexed with other signals. For example, the indication signal MODE can be multiplexed with the reset signal RESET by one terminal. As another example, the indication signal MODE may be multiplexed with a rate selection signal (not shown in the figure) to one terminal. It should be understood that the embodiments of the present disclosure are not limited to this, but the indication signal MODE can be multiplexed with any other suitable signal or signals to one terminal. Through the multiplexing of the terminals, the changes to the hardware structure of the controller can be reduced, and the cost can be reduced.

附加地，控制器320还可以包括第二信号发生器(图中未示出)。第二信号发生器可以被配置用于接收来自光收发器310的检测信号SD，并且基于检测信号SD生成复位信号RESET。此外，第二信号发生器可以向光收发器320提供该复位信号RESET，以用于复位光收发器310的接收器311。Additionally, the controller 320 may also include a second signal generator (not shown in the figure). The second signal generator may be configured to receive the detection signal SD from the optical transceiver 310 and generate a reset signal RESET based on the detection signal SD. In addition, the second signal generator may provide the reset signal RESET to the optical transceiver 320 for resetting the receiver 311 of the optical transceiver 310.

根据上述方式，通过向光收发器310通知控制器320的工作模式，控制器320可以获得经光收发器310准确处理的ONU光信号。以此方式，可以提高OLT侧光信号处理的稳定性和准确性。另外，可以降低OLT侧光接收处理的复杂度，促进OLT的高度集成化。相应地，本公开实施例还提供在光收发器处和在控制器处实施的光信号处理方法，下面结合图4至图6对此进行说明。According to the above method, by notifying the optical transceiver 310 of the operating mode of the controller 320, the controller 320 can obtain the ONU optical signal accurately processed by the optical transceiver 310. In this way, the stability and accuracy of the optical signal processing on the OLT side can be improved. In addition, the complexity of the optical receiving process at the OLT side can be reduced, and the high integration of the OLT can be promoted. Correspondingly, the embodiments of the present disclosure also provide optical signal processing methods implemented at the optical transceiver and at the controller, which will be described below with reference to FIGS. 4 to 6.

图4示出了根据本公开一个实施例的光信号处理方法400的流程图。该方法可以在OLT侧的光收发器(例如图1的光收发器121或图3的光收发器310)处实施，例如在图1的接收器142或图3的接收器311处实施。为方便起见，下面结合图3的示例对图4进行说明。应理解到，图4的方法可以包括其它未示出的附加步骤，或者可以省略示出的一些步骤。本公开的范围并不受限于此。FIG. 4 shows a flowchart of an optical signal processing method 400 according to an embodiment of the present disclosure. This method may be implemented at the optical transceiver on the OLT side (for example, the optical transceiver 121 of FIG. 1 or the optical transceiver 310 of FIG. 3), for example, the receiver 142 of FIG. 1 or the receiver 311 of FIG. For convenience, FIG. 4 will be described below in conjunction with the example of FIG. 3. It should be understood that the method of FIG. 4 may include other additional steps not shown, or some steps shown may be omitted. The scope of the present disclosure is not limited to this.

如图4所示，在框401处，光收发器310接收来自ONU 110的光信号。在一些实施例中，光收发器310可以接收来自多个ONU 110的经时分复用的光信号。但本公开实施例并不限于此。在一些备选实施例中，光收发器310也可以接收来自单个ONU 110的光信号。As shown in FIG. 4, at block 401, the optical transceiver 310 receives the optical signal from the ONU 110. In some embodiments, the optical transceiver 310 may receive time-division multiplexed optical signals from multiple ONUs 110. However, the embodiments of the present disclosure are not limited to this. In some alternative embodiments, the optical transceiver 310 may also receive an optical signal from a single ONU 110.

在框402处，光收发器310接收来自控制器320的指示信号MODE，该指示信号MODE用于指示控制器320的工作模式。在一些实施例中，控制器320的工作模式可以包括开窗模式和数据收发模式。开窗模式是指控制器为要上线的ONU分配特定时隙，以便接收来自该ONU的光信号，并执行测距处理，从而完成这些ONU的注册上线。数据收发模式是指控制器320根据***配置为已注册上线的ONU分配特定带宽，从而进行数据传输。应理解到，本公开实施例并不限于此，控制器320也可以包括其它已有或未来开发的工作模式。At block 402, the optical transceiver 310 receives an indication signal MODE from the controller 320, and the indication signal MODE is used to indicate the operating mode of the controller 320. In some embodiments, the operating mode of the controller 320 may include a windowing mode and a data transceiving mode. The windowing mode means that the controller allocates a specific time slot for the ONU to go online so as to receive the optical signal from the ONU and perform the ranging process, thereby completing the registration and going online of these ONUs. The data transceiving mode means that the controller 320 allocates specific bandwidth to the registered ONUs according to the system configuration, so as to perform data transmission. It should be understood that the embodiments of the present disclosure are not limited thereto, and the controller 320 may also include other existing or future developed working modes.

根据本公开的一些实施例，光收发器310可以经由光收发器310的第一输入输出端子，从控制器320接收指示信号。在一些实施例中，第一输入输出端子可以是一个或多个管脚。当然，其它形式的第一输入输出端子也是可行的。在一些实施例中，第一输入输出端子可以专用于指示信号MODE的接收。以此方式，可以便于实现指示信号的准确接收。According to some embodiments of the present disclosure, the optical transceiver 310 may receive an instruction signal from the controller 320 via the first input and output terminal of the optical transceiver 310. In some embodiments, the first input and output terminal may be one or more pins. Of course, other forms of first input and output terminals are also feasible. In some embodiments, the first input/output terminal may be dedicated to the reception of the indication signal MODE. In this way, accurate reception of the indication signal can be facilitated.

在一些备选实施例中，第一输入输出端子可以是与其它信号复用的端子。例如，指示信号MODE可以与复位信号RESET复用一个端子。作为另一示例，指示信号MODE可以与速率选择信号(图中未示出)复用一个端子。应理解到，本公开实施例并不限于此，而是指示信号MODE可以与其它任意一个或多个合适信号复用一个端子。通过端子的复用，可以减少对光收发器的硬件结构的改动，降低成本。In some alternative embodiments, the first input/output terminal may be a terminal multiplexed with other signals. For example, the indication signal MODE can be multiplexed with the reset signal RESET by one terminal. As another example, the indication signal MODE may be multiplexed with a rate selection signal (not shown in the figure) by multiplexing one terminal. It should be understood that the embodiments of the present disclosure are not limited to this, but the indication signal MODE can be multiplexed with any other suitable signal or signals to one terminal. Through the multiplexing of the terminals, the modification of the hardware structure of the optical transceiver can be reduced, and the cost can be reduced.

在框403，基于指示信号MODE，光收发器310调整光收发器310中的接收器311针对光信号的光处理参数。根据本公开的一些实施例，基于指示信号MODE，光收发器310可以确定控制器320的工作模式。基于确定的工作模式，光收发器310可以调整光处理参数。以此方式，光收发器310可以获知控制器320的工作模式，从而可以适时地调整光处理参数，来处理从ONU 110接收的光信号。下面结合图5对此进行更详细说明。In block 403, based on the indication signal MODE, the optical transceiver 310 adjusts the optical processing parameters of the receiver 311 in the optical transceiver 310 for the optical signal. According to some embodiments of the present disclosure, based on the indication signal MODE, the optical transceiver 310 may determine the operating mode of the controller 320. Based on the determined operating mode, the optical transceiver 310 can adjust the optical processing parameters. In this way, the optical transceiver 310 can learn the operating mode of the controller 320, so that the optical processing parameters can be adjusted in time to process the optical signal received from the ONU 110. This will be described in more detail below in conjunction with FIG. 5.

图5示出了根据本公开一个实施例的调整光处理参数的方法500的流程图。图5的方法可以在OLT侧的光收发器(例如图1的光收发器121或图3的光收发器310)处实施，例如在图1的接收器142或图3的接收器311处实施。为方便起见，下面结合图3的示例对图5进行说明。应理解到，图5的方法可以包括其它未示出的附加步骤，或者可以省略示出的一些步骤。本公开的范围并不受限于此。FIG. 5 shows a flowchart of a method 500 for adjusting light processing parameters according to an embodiment of the present disclosure. The method of FIG. 5 may be implemented at the optical transceiver on the OLT side (for example, the optical transceiver 121 of FIG. 1 or the optical transceiver 310 of FIG. 3), for example, the receiver 142 of FIG. 1 or the receiver 311 of FIG. 3 . For convenience, FIG. 5 will be described below in conjunction with the example of FIG. 3. It should be understood that the method of FIG. 5 may include other additional steps not shown, or some steps shown may be omitted. The scope of the present disclosure is not limited to this.

如图5所示，在框501，光收发器121可以基于指示信号MODE，确定控制器320的工作模式是开窗模式还是数据收发模式。在一些实施例中，光收发器310可以基于指示信号MODE的特征，来确定控制器320的工作模式。例如，指示信号MODE的特征可以包括幅度、频率和相位等等。应理解到，这里仅为示例，其它特征也是可行的。As shown in FIG. 5, at block 501, the optical transceiver 121 may determine whether the operating mode of the controller 320 is the windowing mode or the data transceiving mode based on the indication signal MODE. In some embodiments, the optical transceiver 310 may determine the operating mode of the controller 320 based on the characteristics of the indication signal MODE. For example, the characteristics of the indicator signal MODE may include amplitude, frequency, phase, and so on. It should be understood that this is only an example, and other features are also feasible.

在一些实施例中，当指示信号MODE为第一电平时，光收发器310可以确定控制器320的工作模式为开窗模式。当指示信号MODE为与第一电平不同的第二电平时，光收发器310可以确定控制器320的工作模式为数据收发模式。例如，第一电平和第二电平可以在幅度、频率和相位中的至少一项上不同。In some embodiments, when the indication signal MODE is at the first level, the optical transceiver 310 may determine that the operating mode of the controller 320 is the windowing mode. When the indication signal MODE is a second level different from the first level, the optical transceiver 310 may determine that the working mode of the controller 320 is the data transceiving mode. For example, the first level and the second level may be different in at least one of amplitude, frequency, and phase.

继续沿用前面的示例，第一电平具有第一幅度值和第一持续时间，第二电平具有第二幅度值和第二持续时间。在一些实施例中，第一电平的第一幅度值可以大于第二电平的第二幅度值。备选地，第一幅度值可以小于第二幅度值。在一些备选或附加实施例中，第一电平的第一持续时间可以大于第二电平的第二持续时间。备选地，第一持续时间也可以小于第二持续时间。应理解到，上述实施例仅为示例，本公开实施例并不限于此，其它任意合适特征或特征的组合都是可行的。Continuing the previous example, the first level has a first amplitude value and a first duration, and the second level has a second amplitude value and a second duration. In some embodiments, the first amplitude value of the first level may be greater than the second amplitude value of the second level. Alternatively, the first amplitude value may be smaller than the second amplitude value. In some alternative or additional embodiments, the first duration of the first level may be greater than the second duration of the second level. Alternatively, the first duration may also be less than the second duration. It should be understood that the above-mentioned embodiments are only examples, and the embodiments of the present disclosure are not limited thereto, and any other suitable features or combinations of features are possible.

如果在框501确定工作模式为开窗模式，则在框502，光收发器310可以调整接收器311的光处理参数。例如，光处理参数可以包括增益参数、偏置电压、耦合电容电压、直流偏置等等。在一些实施例中，光收发器310可以调整增益参数来调整光处理参数。备选地或者附加地，光收发器310也可以对偏置电压进行调整。又如，在一些实例中，可以调整耦合电容偏置电压、消除直流偏置，等等。注意，这些调整手段可以单独使用，也可以任意结合使用。当然，这里仅为示例，其它任意合适操作也是可行的。If it is determined in block 501 that the working mode is the windowing mode, then in block 502, the optical transceiver 310 may adjust the optical processing parameters of the receiver 311. For example, the light processing parameters may include gain parameters, bias voltage, coupling capacitor voltage, DC bias, and so on. In some embodiments, the optical transceiver 310 may adjust gain parameters to adjust optical processing parameters. Alternatively or additionally, the optical transceiver 310 may also adjust the bias voltage. For another example, in some instances, the bias voltage of the coupling capacitor can be adjusted, the DC bias can be eliminated, and so on. Note that these adjustment means can be used alone or in any combination. Of course, this is only an example, and any other suitable operations are also feasible.

例如，在一些实施例中，如果指示信号MODE指示控制器320的工作模式为开窗模式，则光收发器310可以根据经光探测器331转换后的电流信号的强度，调整放大器332中的前置放大器(例如TIA)的偏置电压和增益参数。以此方式，使得快速调整直流判决电压和选择合适的增益，生成经放大的电压信号。备选地或附加地，光收发器310可以调整放大器332中的后置放大器(例如LA)的耦合电容电压并且消除直流偏置。由此，可以将经放大的电压信号转换成标准数字电平信号，作为光收发器310的接收数据输出RX。该标准数字电平信号可以符合诸如CML、PECL、LVDS之类的各种标准数字电平格式。应理解到，这里仅为示例，而不是限制性的，该标准数字电平信号可以符合本领域已知或未来确定的其它任意标准数字电平格式。For example, in some embodiments, if the indicator signal MODE indicates that the operating mode of the controller 320 is the windowing mode, the optical transceiver 310 can adjust the front of the amplifier 332 according to the intensity of the current signal converted by the photodetector 331. Set the bias voltage and gain parameters of the amplifier (such as TIA). In this way, the DC judgment voltage can be adjusted quickly and the appropriate gain can be selected to generate an amplified voltage signal. Alternatively or additionally, the optical transceiver 310 may adjust the coupling capacitor voltage of the post amplifier (for example, LA) in the amplifier 332 and eliminate the DC bias. In this way, the amplified voltage signal can be converted into a standard digital level signal, which is output RX as the received data of the optical transceiver 310. The standard digital level signal can comply with various standard digital level formats such as CML, PECL, LVDS and the like. It should be understood that this is only an example, not a limitation, and the standard digital level signal may conform to any other standard digital level format known in the art or determined in the future.

在一些备选实施例中，如果指示信号MODE指示控制器320的工作模式为开窗模式，则光收发器310可以复位接收器311。在这种情况下，无需接收来自控制器320的复位信号RESET，就可以将接收器311复位，从而处理来自ONU 110的光信号。在一些实施例中，光收发器310可以自主产生复位信号来复位接收器311。当然，也可以采用其它任意合适方式来复位接收器311。如前面提及的，复位接收器311是指将接收器311的光处理参数调整到预定值。在一些实施例中，该预定值可以是预先确定的。在一些实施例中，该预定值可以是根据需要而动态确定的。通过直接复位，可以更加简便快捷地实现对光处理参数的调整。In some alternative embodiments, if the indication signal MODE indicates that the operating mode of the controller 320 is the windowing mode, the optical transceiver 310 may reset the receiver 311. In this case, the receiver 311 can be reset without receiving the reset signal RESET from the controller 320, so as to process the optical signal from the ONU 110. In some embodiments, the optical transceiver 310 can autonomously generate a reset signal to reset the receiver 311. Of course, any other suitable method can also be used to reset the receiver 311. As mentioned earlier, resetting the receiver 311 refers to adjusting the optical processing parameters of the receiver 311 to a predetermined value. In some embodiments, the predetermined value may be predetermined. In some embodiments, the predetermined value may be dynamically determined according to needs. Through direct reset, the adjustment of light processing parameters can be realized more simply and quickly.

作为上述光处理参数的调整结果，在框503，光收发器310可以向控制器320提供检测信号SD，用于指示光收发器310已接收光信号。在一些实施例中，光收发器310还可以将标准数字电平信号作为接收数据输出RX提供给控制器320作进一步处理。As a result of the adjustment of the foregoing optical processing parameters, in block 503, the optical transceiver 310 may provide the controller 320 with a detection signal SD to indicate that the optical transceiver 310 has received the optical signal. In some embodiments, the optical transceiver 310 may also provide a standard digital level signal as the received data output RX to the controller 320 for further processing.

在框504，光收发器310可以接收来自控制器320的复位信号RESET。该复位信号RESET基于检测信号SD而产生，并且用于指示复位接收器311。由此可以确保OLT 300在开窗模式中的光信号处理的稳定性，避免死循环的出现。In block 504, the optical transceiver 310 may receive the reset signal RESET from the controller 320. The reset signal RESET is generated based on the detection signal SD, and is used to instruct the receiver 311 to reset. In this way, the stability of the optical signal processing of the OLT 300 in the windowing mode can be ensured, and the occurrence of infinite loops can be avoided.

如果在501确定工作模式为数据收发模式，则在框505，光收发器310可以基于来自控制器320的复位信号RESET来复位接收器311。以此方式，接收器311可以处理来自ONU 110的光信号，从而进行数据传输。If it is determined at 501 that the working mode is the data transceiving mode, at block 505, the optical transceiver 310 may reset the receiver 311 based on the reset signal RESET from the controller 320. In this way, the receiver 311 can process the optical signal from the ONU 110 to perform data transmission.

上面结合图4和图5描述了根据本公开实施例的在光收发器处实施的光信号处理方法，下面结合图6描述根据本公开实施例的在控制器处实施的光信号处理方法。图6示出了根据本公开一个实施例的光信号处理方法600的流程图。该方法可以在OLT侧的控制器(例如图1的控制器122或图3的控制器320)处实施。为方便起见，下面结合图3的示例对图6进行说明。应理解到，图6的方法可以包括其它未示出的附加步骤，或者可以省略示出的一些步骤，本公开的范围并不受限于此。The optical signal processing method implemented at the optical transceiver according to the embodiment of the present disclosure is described above with reference to FIGS. 4 and 5, and the optical signal processing method implemented at the controller according to the embodiment of the present disclosure is described below with reference to FIG. 6. FIG. 6 shows a flowchart of an optical signal processing method 600 according to an embodiment of the present disclosure. This method may be implemented at the controller on the OLT side (for example, the controller 122 of FIG. 1 or the controller 320 of FIG. 3). For convenience, FIG. 6 will be described with reference to the example of FIG. 3 below. It should be understood that the method of FIG. 6 may include other additional steps not shown, or some steps shown may be omitted, and the scope of the present disclosure is not limited thereto.

如图6所示，在框601处，控制器320生成指示信号MODE，该指示信号MODE用于指示控制器320的工作模式。在一些实施例中，控制器320的工作模式为开窗模式或数据收发模式。在一些实施例中，控制器320可以确定工作模式为开窗模式还是数据收发模式，并且生成指示信号MODE来指示该工作模式。例如，在一些实施例中，如果工作模式从数据收发模式切换为开窗模式，则控制器320可以生成指示信号MODE来指示工作模式为开窗模式。如果工作模式从开窗模式切换为数据收发模式，则控制器320生成指示信号MODE来指示工作模式为数据收发模式。As shown in FIG. 6, at block 601, the controller 320 generates an indication signal MODE, and the indication signal MODE is used to indicate the working mode of the controller 320. In some embodiments, the working mode of the controller 320 is a windowing mode or a data transceiving mode. In some embodiments, the controller 320 may determine whether the working mode is the windowing mode or the data transceiving mode, and generate an indication signal MODE to indicate the working mode. For example, in some embodiments, if the working mode is switched from the data transceiving mode to the windowing mode, the controller 320 may generate the indication signal MODE to indicate that the working mode is the windowing mode. If the working mode is switched from the windowing mode to the data transceiving mode, the controller 320 generates an indication signal MODE to indicate that the working mode is the data transceiving mode.

在一些实施例中，控制器320可以通过指示信号MODE的特征来指示其工作模式。指示信号的特征可以包括幅度、频率、相位等等。应理解到，这里仅为示例，其它特征也是可行的。在一些实施例中，如果确定工作模式为开窗模式，则控制器320可以生成具有第一电平的指示信号MODE来指示该开窗模式。如果确定工作模式为数据收发模式，则控制器320可以生成具有与第一电平不同的第二电平的指示信号MODE来指示该数据收发模式。例如，第一电平和第二电平可以在幅度、频率和相位中的至少一项上不同。In some embodiments, the controller 320 may indicate its operating mode through the characteristics of the indication signal MODE. The characteristics of the indicator signal can include amplitude, frequency, phase, and so on. It should be understood that this is only an example, and other features are also feasible. In some embodiments, if it is determined that the working mode is the windowing mode, the controller 320 may generate an indication signal MODE having the first level to indicate the windowing mode. If it is determined that the working mode is the data transceiving mode, the controller 320 may generate an indication signal MODE having a second level different from the first level to indicate the data transceiving mode. For example, the first level and the second level may be different in at least one of amplitude, frequency, and phase.

在框602，控制器320可以向光收发器310提供该指示信号MODE。由此，使得光收发器310基于指示信号MODE调整光收发器310的接收器311的光处理参数。在一些实施例中，控制器320可以经由第二输入输出端子，向光收发器310提供指示信号MODE。在一些实施例中，第二输入输出端子可以是一个或多个管脚。当然，其它形式的第二输入输出端子也是可行的。在一些实施例中，第二输入输出端子可以专用于指示信号MODE的提供，如图3所示。以此方式，可以便于实现指示信号MODE的准确提供。In block 602, the controller 320 may provide the indication signal MODE to the optical transceiver 310. Thus, the optical transceiver 310 is caused to adjust the optical processing parameters of the receiver 311 of the optical transceiver 310 based on the instruction signal MODE. In some embodiments, the controller 320 may provide the indicating signal MODE to the optical transceiver 310 via the second input/output terminal. In some embodiments, the second input and output terminal may be one or more pins. Of course, other forms of second input and output terminals are also feasible. In some embodiments, the second input and output terminal may be dedicated to the provision of the indication signal MODE, as shown in FIG. 3. In this way, the accurate provision of the indication signal MODE can be facilitated.

在一些备选实施例中，第二输入输出端子可以是与其它信号复用的端子。例如，指示信号MODE可以与复位信号RESET复用一个端子。作为另一示例，指示信号MODE可以与速率选择信号(图中未示出)复用一个端子。应理解到，本公开实施例并不限于此，而是指示信号MODE可以与其它任意一个或多个合适信号复用一个端子。通过端子的复用，可以减少对控制器的硬件结构的改动，降低成本。In some alternative embodiments, the second input and output terminal may be a terminal multiplexed with other signals. For example, the indication signal MODE can be multiplexed with the reset signal RESET by one terminal. As another example, the indication signal MODE may be multiplexed with a rate selection signal (not shown in the figure) by multiplexing one terminal. It should be understood that the embodiments of the present disclosure are not limited to this, but the indication signal MODE can be multiplexed with any other suitable signal or signals to one terminal. Through the multiplexing of the terminals, the changes to the hardware structure of the controller can be reduced, and the cost can be reduced.

在一些备选或附加实施例中，控制器320还可以接收来自光收发器310的检测信号SD，并且基于检测信号SD生成复位信号RESET。继而，控制器320可以向光收发器320提供该复位信号RESET，以用于复位光收发器310的接收器311。In some alternative or additional embodiments, the controller 320 may also receive the detection signal SD from the optical transceiver 310, and generate a reset signal RESET based on the detection signal SD. Then, the controller 320 may provide the reset signal RESET to the optical transceiver 320 for resetting the receiver 311 of the optical transceiver 310.

根据本公开实施例的方法，通过向光收发器310通知控制器320的工作模式，控制器320可以获得经光收发器310准确处理的ONU光信号。以此方式，可以提高OLT侧光接收处理的稳定性和准确性。另外，可以降低光收发器的设计复杂度，促进OLT的高度集成化。According to the method of the embodiment of the present disclosure, by notifying the optical transceiver 310 of the operating mode of the controller 320, the controller 320 can obtain the ONU optical signal accurately processed by the optical transceiver 310. In this way, the stability and accuracy of the light receiving process at the OLT side can be improved. In addition, the design complexity of the optical transceiver can be reduced, and the high integration of the OLT can be promoted.

至此结合示例描述了根据本公开实施例的光信号处理方法以及光收发器、控制器和OLT。在根据本公开实施例的方法中，通过控制器生成指示其工作模式的指示信号，并将指示信号提供给光收发器。光收发器接收该指示信号，并且在接收到来自ONU的光信号时，基于该指示信号调整针对该光信号的光处理参数。相应地，根据本公开实施例的OLT包括光收发器和控制器。光收发器包括接收器，接收器可以包括光检测器和与光检测器耦合的放大器。光检测器被配置用于接收来自ONU的光信号，放大器被配置用于接收来自控制器的用于指示控制器的工作模式的指示信号以及基于指示信号来调整接收器针对光信号的光处理参数。控制器包括第一信号发生器，第一信号发生器被配置用于生成该指示信号以及向光收发器提供该指示信号。根据本公开实施例的上述方案，可以确保OLT侧光接收处理的稳定性和准确性。另外，可以降低光收发器特别是放大器的设计复杂度，促进OLT的高度集成化。So far, the optical signal processing method, the optical transceiver, the controller, and the OLT according to the embodiments of the present disclosure have been described in conjunction with examples. In the method according to the embodiment of the present disclosure, an indication signal indicating its working mode is generated by the controller, and the indication signal is provided to the optical transceiver. The optical transceiver receives the instruction signal, and when receiving the optical signal from the ONU, adjusts the optical processing parameters for the optical signal based on the instruction signal. Accordingly, the OLT according to an embodiment of the present disclosure includes an optical transceiver and a controller. The optical transceiver includes a receiver, and the receiver may include a photodetector and an amplifier coupled with the photodetector. The optical detector is configured to receive the optical signal from the ONU, and the amplifier is configured to receive an indication signal from the controller for indicating the operating mode of the controller and adjust the optical processing parameters of the receiver for the optical signal based on the indication signal . The controller includes a first signal generator configured to generate the instruction signal and provide the instruction signal to the optical transceiver. According to the above-mentioned solutions of the embodiments of the present disclosure, the stability and accuracy of the optical receiving processing at the OLT side can be ensured. In addition, the design complexity of the optical transceiver, especially the amplifier, can be reduced, and the high integration of the OLT can be promoted.

一般而言，本公开的各种示例实施例可以在硬件或专用电路、软件、逻辑，或其任何组合中实施。某些方面可以在硬件中实施，而其他方面可以在可以由控制器、微处理器或其他计算设备执行的固件或软件中实施。当本公开的实施例的各方面被图示或描述为框图、流程图或使用某些其他图形表示时，将理解此处描述的方框、装置、***、技术或方法可以作为非限制性的示例在硬件、软件、固件、专用电路或逻辑、通用硬件或控制器或其他计算设备，或其某些组合中实施。可用来实现本公开实施例的硬件器件的示例包括但不限于：现场可编程门阵列(FPGA：Field Programmable Gate Array)、专用集成电路(ASIC：Application-Specific Integrated Circuit)、专用标准产品(ASSP：Application-Specific Standard Product)、片上***(SOC：System On a Chip)、复杂可编程逻辑器件(CPLD：Complex Programmable Logic Device)，等等。Generally speaking, the various exemplary embodiments of the present disclosure may be implemented in hardware or special purpose circuits, software, logic, or any combination thereof. Certain aspects can be implemented in hardware, while other aspects can be implemented in firmware or software that can be executed by a controller, microprocessor, or other computing device. When various aspects of the embodiments of the present disclosure are illustrated or described as block diagrams, flowcharts, or using some other graphical representation, it will be understood that the blocks, devices, systems, techniques, or methods described herein can be regarded as non-limiting Examples are implemented in hardware, software, firmware, dedicated circuits or logic, general-purpose hardware or controllers or other computing devices, or some combination thereof. Examples of hardware devices that can be used to implement the embodiments of the present disclosure include but are not limited to: Field Programmable Gate Array (FPGA: Field Programmable Gate Array), Application-Specific Integrated Circuit (ASIC: Application-Specific Integrated Circuit), and application-specific standard products (ASSP: Application-Specific Standard Product), System on Chip (SOC: System On a Chip), Complex Programmable Logic Device (CPLD: Complex Programmable Logic Device), etc.

作为示例，本公开的实施例可以在机器可执行指令的上下文中被描述，机器可执行指令诸如包括在目标的真实或者虚拟处理器上的器件中执行的程序模块中。一般而言，程序模块包括例程、程序、库、对象、类、组件、数据结构等，其执行特定的任务或者实现特定的抽象数据结构。在各实施例中，程序模块的功能可以在所描述的程序模块之间合并或者分割。用于程序模块的机器可执行指令可以在本地或者分布式设备内执行。在分布式设备中，程序模块可以位于本地和远程存储介质二者中。As an example, the embodiments of the present disclosure may be described in the context of machine-executable instructions, such as included in program modules executed in devices on a target's real or virtual processor. Generally speaking, program modules include routines, programs, libraries, objects, classes, components, data structures, etc., which perform specific tasks or implement specific abstract data structures. In various embodiments, the functions of the program modules can be combined or divided among the described program modules. The machine executable instructions for the program modules can be executed in local or distributed devices. In distributed equipment, program modules can be located in both local and remote storage media.

用于实现本公开的方法的计算机程序代码可以用一种或多种编程语言编写。这些计算机程序代码可以提供给通用计算机、专用计算机或其他可编程的数据处理装置的处理器，使得程序代码在被计算机或其他可编程的数据处理装置执行的时候，引起在流程图和/或框图中规定的功能/操作被实施。程序代码可以完全在计算机上、部分在计算机上、作为独立的软件包、部分在计算机上且部分在远程计算机上或完全在远程计算机或服务器上执行。The computer program code used to implement the method of the present disclosure can be written in one or more programming languages. These computer program codes can be provided to the processors of general-purpose computers, special-purpose computers, or other programmable data processing devices, so that when the program codes are executed by the computer or other programmable data processing devices, they will cause changes in the flowcharts and/or block diagrams. The functions/operations specified in are implemented. The program code can be executed entirely on a computer, partly on a computer, as a stand-alone software package, partly on a computer and partly on a remote computer, or entirely on a remote computer or server.

在本公开的上下文中，计算机程序代码或者相关数据可以由任意适当载体承载，以使得设备、装置或者处理器能够执行上文描述的各种处理和操作。载体的示例包括信号、计算机可读介质等等。In the context of the present disclosure, the computer program code or related data may be carried by any suitable carrier, so that the device, apparatus, or processor can perform the various processing and operations described above. Examples of carriers include signals, computer-readable media, and so on.

信号的示例可以包括电、光、无线电、声音或其它形式的传播信号，诸如载波、红外信号等。Examples of signals may include electrical, optical, radio, sound, or other forms of propagated signals, such as carrier waves, infrared signals, and the like.

机器可读介质可以是包含或存储用于或有关于指令执行***、装置或设备的程序的任何有形介质。机器可读介质可以是机器可读信号介质或机器可读存储介质。机器可读介质可以包括但不限于电子的、磁的、光学的、电磁的、红外的或半导体***、装置或设备，或其任意合适的组合。机器可读存储介质的更详细示例包括带有一根或多根导线的电气连接、便携式计算机磁盘、硬盘、随机存取存储器(RAM：Random Access Memory)、只读存储器(ROM：Read Only Memory)、可擦除可编程只读存储器(EPROM：Erasable Programmable Read Only Memory或闪存)、光存储设备、磁存储设备，或其任意合适的组合。A machine-readable medium may be any tangible medium that contains or stores a program for or related to the instruction execution system, apparatus, or device. The machine-readable medium may be a machine-readable signal medium or a machine-readable storage medium. The machine-readable medium may include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, device, or device, or any suitable combination thereof. More detailed examples of machine-readable storage media include electrical connections with one or more wires, portable computer disks, hard disks, random access memory (RAM: Random Access Memory), read-only memory (ROM: Read Only Memory), Erasable Programmable Read Only Memory (EPROM: Erasable Programmable Read Only Memory or flash memory), optical storage device, magnetic storage device, or any suitable combination thereof.

另外，尽管操作以特定顺序被描绘，但这并不应该理解为要求此类操作以示出的特定顺序或以相继顺序完成，或者执行所有图示的操作以获取期望结果。在某些情况下，多任务或并行处理会是有益的。同样地，尽管上述讨论包含了某些特定的实施细节，但这并不应解释为限制任何发明或权利要求的范围，而应解释为对可以针对特定发明的特定实施例的描述。本说明书中在分开的实施例的上下文中描述的某些特征也可以整合实施在单个实施例中。反之，在单个实施例的上下文中描述的各种特征也可以分离地在多个实施例或在任意合适的子组合中实施。In addition, although the operations are depicted in a specific order, this should not be understood as requiring such operations to be completed in the specific order shown or in a sequential order, or to perform all illustrated operations to obtain desired results. In some cases, multitasking or parallel processing can be beneficial. Likewise, although the foregoing discussion contains certain specific implementation details, this should not be construed as limiting the scope of any invention or claims, but as a description of specific embodiments that can be directed to specific inventions. Certain features that are described in this specification in the context of separate embodiments can also be implemented in combination in a single embodiment. Conversely, various features described in the context of a single embodiment can also be implemented in multiple embodiments separately or in any suitable subcombination.

尽管已经以特定于结构特征和/或方法动作的语言描述了主题，但是应当理解，所附权利要求中限定的主题并不限于上文描述的特定特征或动作。相反，上文描述的特定特征和动作是作为实现权利要求的示例形式而被公开的。Although the subject matter has been described in language specific to structural features and/or method actions, it should be understood that the subject matter defined in the appended claims is not limited to the specific features or actions described above. On the contrary, the specific features and actions described above are disclosed as example forms for implementing the claims.

Claims

一种光信号处理方法，包括：An optical signal processing method, including:

光收发器接收来自光网络单元的光信号；The optical transceiver receives the optical signal from the optical network unit;

所述光收发器接收来自控制器的指示信号，所述指示信号用于指示所述控制器的工作模式；以及The optical transceiver receives an indication signal from the controller, the indication signal is used to indicate the operating mode of the controller; and

基于所述指示信号，所述光收发器调整所述光收发器的接收器针对所述光信号的光处理参数。Based on the indication signal, the optical transceiver adjusts the optical processing parameters of the receiver of the optical transceiver for the optical signal.
根据权利要求1所述的方法，其中所述光收发器调整所述光处理参数包括：The method of claim 1, wherein the optical transceiver adjusting the optical processing parameter comprises:

基于所述指示信号，所述光收发器确定所述控制器的工作模式；以及Based on the indication signal, the optical transceiver determines the operating mode of the controller; and

基于所述工作模式，所述光收发器调整所述光处理参数。Based on the operating mode, the optical transceiver adjusts the optical processing parameters.
根据权利要求1所述的方法，其中所述指示信号的特征用于指示所述控制器的工作模式，所述特征包括幅度、频率和相位中的至少一种。The method according to claim 1, wherein the characteristic of the indication signal is used to indicate the operating mode of the controller, and the characteristic includes at least one of amplitude, frequency, and phase.
根据权利要求1所述的方法，其中所述控制器的工作模式为开窗模式或数据收发模式。The method according to claim 1, wherein the operating mode of the controller is a windowing mode or a data transceiving mode.
根据权利要求1-4中任一项所述的方法，其中所述光收发器调整所述光处理参数包括：The method according to any one of claims 1-4, wherein the optical transceiver adjusting the optical processing parameter comprises:

如果所述指示信号指示所述控制器的工作模式为开窗模式，执行以下中的至少一项：If the indication signal indicates that the working mode of the controller is the windowing mode, perform at least one of the following:

调整所述接收器的增益参数；Adjusting the gain parameter of the receiver;

调整所述接收器的偏置电压；Adjusting the bias voltage of the receiver;

调整所述接收器的耦合电容偏置电压；以及Adjusting the bias voltage of the coupling capacitor of the receiver; and

消除所述接收器的直流偏置。Eliminate the DC offset of the receiver.
根据权利要求1-4中任一项所述的方法，其中所述光收发器调整所述光处理参数包括：The method according to any one of claims 1-4, wherein the optical transceiver adjusting the optical processing parameter comprises:

如果所述指示信号指示所述控制器的工作模式为开窗模式，复位所述接收器。If the indication signal indicates that the operating mode of the controller is a windowing mode, reset the receiver.
根据权利要求1-4中任一项所述的方法，其中所述光收发器调整所述光处理参数包括：The method according to any one of claims 1-4, wherein the optical transceiver adjusting the optical processing parameter comprises:

如果所述指示信号指示所述控制器的工作模式为数据收发模式，基于来自所述控制器的复位信号复位所述接收器。If the indication signal indicates that the operating mode of the controller is a data transceiving mode, the receiver is reset based on the reset signal from the controller.
根据权利要求1-4中任一项所述的方法，其中所述光收发器接收所述指示信号包括：The method according to any one of claims 1-4, wherein the receiving of the indication signal by the optical transceiver comprises:

经由所述光收发器的第一输入输出端子，所述光收发器从所述控制器接收所述指示信号。The optical transceiver receives the instruction signal from the controller via the first input/output terminal of the optical transceiver.
根据权利要求8所述的方法，其中所述第一输入输出端子专用于所述指示信号的接收。The method according to claim 8, wherein the first input and output terminal is dedicated to the reception of the indication signal.
根据权利要求1-4中任一项所述的方法，还包括：The method according to any one of claims 1-4, further comprising:

所述光收发器向所述控制器提供检测信号，所述检测信号用于指示所述光收发器已接收所述光信号；以及The optical transceiver provides a detection signal to the controller, and the detection signal is used to indicate that the optical transceiver has received the optical signal; and

所述光收发器接收来自所述控制器的复位信号，所述复位信号由所述控制器基于所述检测信号而生成，所述复位信号用于复位所述接收器。The optical transceiver receives a reset signal from the controller, the reset signal is generated by the controller based on the detection signal, and the reset signal is used to reset the receiver.
一种光信号处理方法，包括：An optical signal processing method, including:

控制器生成指示信号，所述指示信号用于指示所述控制器的工作模式；以及The controller generates an indication signal, the indication signal is used to indicate the operating mode of the controller; and

所述控制器向光收发器提供所述指示信号，以使得所述光收发器基于所述指示信号调整所述光收发器的接收器的光处理参数。The controller provides the indication signal to the optical transceiver, so that the optical transceiver adjusts the optical processing parameters of the receiver of the optical transceiver based on the indication signal.
根据权利要求11所述的方法，其中所述控制器生成所述指示信号包括：The method of claim 11, wherein the controller generating the indication signal comprises:

确定所述控制器的工作模式为开窗模式还是数据收发模式；以及Determining whether the working mode of the controller is a windowing mode or a data transceiving mode; and

生成所述指示信号以指示所述控制器的工作模式。The indication signal is generated to indicate the operating mode of the controller.
根据权利要求11所述的方法，其中所述指示信号的特征用于指示所述控制器的工作模式，所述特征包括幅度、频率和相位中的至少一种。The method according to claim 11, wherein the characteristic of the indication signal is used to indicate the operating mode of the controller, and the characteristic includes at least one of amplitude, frequency, and phase.
根据权利要求11-13中任一项所述的方法，其中所述控制器生成所述指示信号包括：The method according to any one of claims 11-13, wherein the controller generating the indication signal comprises:

如果所述控制器的工作模式从数据收发模式切换为开窗模式，生成所述指示信号来指示所述工作模式为所述开窗模式；以及If the operating mode of the controller is switched from the data transceiving mode to the windowing mode, generating the indication signal to indicate that the operating mode is the windowing mode; and

如果所述控制器的工作模式从开窗模式切换为数据收发模式，生成所述指示信号来指示所述工作模式为所述数据收发模式。If the operating mode of the controller is switched from the windowing mode to the data transceiving mode, the indication signal is generated to indicate that the operating mode is the data transceiving mode.
根据权利要求11-13中任一项所述的方法，其中所述控制器提供所述指示信号包括：The method according to any one of claims 11-13, wherein the controller providing the indication signal comprises:

经由所述控制器的第二输入输出端子，向所述光收发器提供所述指示信号。The instruction signal is provided to the optical transceiver via the second input and output terminal of the controller.
根据权利要求15所述的方法，其中所述第二输入输出端子专用于所述指示信号的提供。The method according to claim 15, wherein the second input and output terminal is dedicated to the provision of the indication signal.
根据权利要求11-13中任一项所述的方法，还包括：The method according to any one of claims 11-13, further comprising:

所述控制器接收来自所述光收发器的检测信号，所述检测信号用于指示所述光收发器已接收所述光信号；以及The controller receives a detection signal from the optical transceiver, where the detection signal is used to indicate that the optical transceiver has received the optical signal; and

所述控制器向所述光收发器提供复位信号，所述复位信号由所述控制器基于所述检测信号而生成，所述复位信号用于复位所述接收器。The controller provides a reset signal to the optical transceiver, the reset signal is generated by the controller based on the detection signal, and the reset signal is used to reset the receiver.
一种光收发器，包括：An optical transceiver, including:

接收器，所述接收器包括：A receiver, the receiver includes:

光检测器，被配置用于接收来自光网络单元的光信号；The optical detector is configured to receive the optical signal from the optical network unit;

放大器，与所述光检测器耦合，并且被配置用于：An amplifier, coupled with the photodetector, and configured to:

接收来自控制器的指示信号，所述指示信号用于指示所述控制器的工作模式；以及Receiving an indication signal from the controller, the indication signal being used to indicate the operating mode of the controller; and

基于所述指示信号，调整所述接收器针对所述光信号的光处理参数。Based on the indication signal, adjusting the optical processing parameters of the receiver for the optical signal.
根据权利要求18所述的光收发器，其中所述放大器还被配置用于：The optical transceiver of claim 18, wherein the amplifier is further configured to:

基于所述指示信号，确定所述控制器的工作模式；以及Determine the operating mode of the controller based on the indication signal; and

基于所述工作模式，调整所述接收器的光处理参数。Based on the operating mode, the optical processing parameters of the receiver are adjusted.
根据权利要求18所述的光收发器，其中所述指示信号的特征用于指示所述控制器的工作模式，所述特征包括幅度、频率和相位中的至少一种。The optical transceiver according to claim 18, wherein the characteristic of the indication signal is used to indicate the operating mode of the controller, and the characteristic includes at least one of amplitude, frequency, and phase.
根据权利要求18所述的光收发器，其中所述控制器的工作模式为开窗模式或数据收发模式。The optical transceiver according to claim 18, wherein the operating mode of the controller is a windowing mode or a data transceiving mode.
根据权利要求18-21中任一项所述的光收发器，其中所述放大器还被配置用于：The optical transceiver according to any one of claims 18-21, wherein the amplifier is further configured to:

如果所述指示信号指示所述控制器的工作模式为开窗模式，执行以下中的至少一项：If the indication signal indicates that the working mode of the controller is the windowing mode, perform at least one of the following:

调整所述接收器的增益参数；Adjusting the gain parameter of the receiver;

调整所述接收器的偏置电压；Adjusting the bias voltage of the receiver;

调整所述接收器的耦合电容偏置电压；以及Adjusting the bias voltage of the coupling capacitor of the receiver; and

消除所述接收器的直流偏置。Eliminate the DC offset of the receiver.
根据权利要求18-21中任一项所述的光收发器，其中所述放大器还被配置用于：The optical transceiver according to any one of claims 18-21, wherein the amplifier is further configured to:

如果所述指示信号指示所述控制器的工作模式为开窗模式，复位所述接收器。If the indication signal indicates that the operating mode of the controller is a windowing mode, reset the receiver.
根据权利要求18-21中任一项所述的光收发器，其中所述放大器还被配置用于：The optical transceiver according to any one of claims 18-21, wherein the amplifier is further configured to:

如果所述指示信号指示所述控制器的工作模式为数据收发模式，基于来自所述控制器的复位信号复位所述接收器。If the indication signal indicates that the operating mode of the controller is a data transceiving mode, the receiver is reset based on the reset signal from the controller.
根据权利要求18-21中任一项所述的光收发器，其中所述放大器还被配置用于：The optical transceiver according to any one of claims 18-21, wherein the amplifier is further configured to:

经由所述光收发器的第一输入输出端子，从所述控制器接收所述指示信号。The instruction signal is received from the controller via the first input/output terminal of the optical transceiver.
根据权利要求25所述的光收发器，其中所述第一输入输出端子专用于所述指示信号的接收。The optical transceiver according to claim 25, wherein the first input and output terminal is dedicated to the reception of the indication signal.
根据权利要求18-21中任一项所述的光收发器，其中所述放大器还被配置用于：The optical transceiver according to any one of claims 18-21, wherein the amplifier is further configured to:

向所述控制器提供检测信号，所述检测信号用于指示所述光收发器已接收所述光信号，以及Provide a detection signal to the controller, the detection signal being used to indicate that the optical transceiver has received the optical signal, and

接收来自所述控制器的复位信号，所述复位信号由所述控制器响应于所述检测信号而生成，所述复位信号用于复位所述接收器。A reset signal is received from the controller, the reset signal is generated by the controller in response to the detection signal, and the reset signal is used to reset the receiver.
根据权利要求18-21中任一项所述的光收发器，其中所述放大器包括前置放大器和后置放大器。The optical transceiver according to any one of claims 18-21, wherein the amplifier includes a pre-amplifier and a post-amplifier.
一种控制器，包括：A controller including:

第一信号发生器，被配置用于：The first signal generator is configured to:

生成指示信号，所述指示信号用于指示所述控制器的工作模式；以及Generating an indication signal, the indication signal being used to indicate the operating mode of the controller; and

向光收发器提供所述指示信号，以使得所述光收发器基于所述指示信号调整所述光收发器中的接收器的光处理参数。The instruction signal is provided to the optical transceiver, so that the optical transceiver adjusts the optical processing parameters of the receiver in the optical transceiver based on the instruction signal.
根据权利要求29所述的控制器，其中所述第一信号发生器还被配置用于：The controller of claim 29, wherein the first signal generator is further configured to:

确定所述控制器的工作模式为开窗模式还是数据收发模式；以及Determining whether the working mode of the controller is a windowing mode or a data transceiving mode; and

生成所述指示信号以指示所述控制器的工作模式。The indication signal is generated to indicate the operating mode of the controller.
根据权利要求29所述的控制器，其中所述指示信号的特征用于指示所述控制器的工作模式，所述特征包括幅度、频率和相位中的至少一种。The controller according to claim 29, wherein a characteristic of the indication signal is used to indicate an operating mode of the controller, and the characteristic includes at least one of amplitude, frequency, and phase.
根据权利要求29-31中任一项所述的控制器，其中所述第一信号发生器还被配置用于：The controller according to any one of claims 29-31, wherein the first signal generator is further configured to:

如果所述控制器的工作模式从数据收发模式切换为开窗模式，生成所述指示信号来指示所述工作模式为所述开窗模式；以及If the operating mode of the controller is switched from the data transceiving mode to the windowing mode, generating the indication signal to indicate that the operating mode is the windowing mode; and

如果所述控制器的工作模式从开窗模式切换为数据收发模式，生成所述指示信号来指示所述工作模式为所述数据收发模式。If the operating mode of the controller is switched from the windowing mode to the data transceiving mode, the indication signal is generated to indicate that the operating mode is the data transceiving mode.
根据权利要求29-31中任一项所述的控制器，其中所述第一信号发生器还被配置用于：The controller according to any one of claims 29-31, wherein the first signal generator is further configured to:

经由所述控制器的第二输入输出端子，向所述光收发器提供所述指示信号。The instruction signal is provided to the optical transceiver via the second input and output terminal of the controller.
根据权利要求33所述的控制器，其中所述第二输入输出端子专用于所述指示信号的提供。The controller according to claim 33, wherein the second input and output terminal is dedicated to the supply of the indication signal.
根据权利要求29-31中任一项所述的控制器，还包括：The controller according to any one of claims 29-31, further comprising:

第二信号发生器，被配置用于：The second signal generator is configured to:

接收来自所述光收发器的检测信号，所述检测信号用于指示所述光收发器已接收所述光信号；以及Receiving a detection signal from the optical transceiver, where the detection signal is used to indicate that the optical transceiver has received the optical signal; and

向所述光收发器提供所述复位信号，所述复位信号基于所述检测信号而生成，所述复位信号用于复位所述接收器。The reset signal is provided to the optical transceiver, the reset signal is generated based on the detection signal, and the reset signal is used to reset the receiver.
一种光线路终端，包括：An optical line terminal, including:

根据权利要求18-28中任一项所述的光收发器；以及The optical transceiver according to any one of claims 18-28; and

根据权利要求29-35中任一项所述的控制器。The controller according to any one of claims 29-35.