WO2018133049A1 - 一种处理数据的方法、光接入设备以及光接入系统 - Google Patents

一种处理数据的方法、光接入设备以及光接入系统 Download PDF

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Publication number
WO2018133049A1
WO2018133049A1 PCT/CN2017/071988 CN2017071988W WO2018133049A1 WO 2018133049 A1 WO2018133049 A1 WO 2018133049A1 CN 2017071988 W CN2017071988 W CN 2017071988W WO 2018133049 A1 WO2018133049 A1 WO 2018133049A1
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Prior art keywords
downlink data
data
optical access
optical
electrical signal
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PCT/CN2017/071988
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English (en)
French (fr)
Inventor
林连魁
刘凡
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华为技术有限公司
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Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to CN201780068082.5A priority Critical patent/CN109923802B/zh
Priority to EP17892749.7A priority patent/EP3553974B1/en
Priority to PCT/CN2017/071988 priority patent/WO2018133049A1/zh
Publication of WO2018133049A1 publication Critical patent/WO2018133049A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/22—Adaptations for optical transmission
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/27—Arrangements for networking

Definitions

  • the embodiments of the present invention relate to the field of optical communications, and in particular, to a method for processing data, an optical access device, and an optical access system.
  • optical communication technologies With the continuous development of communication technologies, the application of optical communication technologies has become more and more extensive; correspondingly, network access devices in traditional communication systems have gradually developed into optical access devices in optical communication systems.
  • an OLT that is located at a central office (such as a computer room) receives the downlink signal and then processes the downlink signal first. Then, the processed downlink signal is sent as an optical signal to a Cable Modem Terminal Systems (CMTS) located at a remote end (for example, an outdoor fixed pole or a chassis, etc.), and after receiving the optical signal, the CMTS receives the optical signal.
  • CMTS Cable Modem Terminal Systems
  • CM Cable Modem
  • the CMTS since the CMTS is located at the far end, and the CMTS needs to process the optical signals it receives at the MAC layer and the PHY layer, the optical signals are usually consumed by the MAC layer and the PHY layer, so The power consumption of the device on the far side is usually large.
  • the present application provides a method for processing data, an optical access device, and an optical access system, which can reduce power consumption of a device on a remote side.
  • the application provides an optical access system, where the optical access system can include: an optical access device and at least one PHY processing entity connected to the optical access device.
  • the optical access system can be applied to the process of transmitting downlink data.
  • the optical access device is configured to receive the first downlink data, and perform a first processing on the first downlink data in the MAC layer in the optical access device to obtain second downlink data in the form of a digital electrical signal, and Transmitting the second downlink data in the form of the digital electrical signal to the at least one PHY processing entity in the form of a digital optical signal; each of the at least one PHY processing entity is configured to receive the digital optical signal form sent by the optical access device Second downlink data, and performing second processing on the second downlink data in the form of a digital optical signal at the PHY layer, obtaining third downlink data in the form of an analog electrical signal, and transmitting the third downlink data in the form of the analog electrical signal to CM.
  • the optical access system provided by the present application can perform the first processing on the first downlink data at the MAC layer in the optical access device located at the central office, and the PHY layer pair digital optical signal in the remote PHY processing entity.
  • the second downlink data of the form is processed second, so there is no need for the device on the remote side.
  • the function of the integrated MAC layer, that is, the device on the remote side does not need to perform the first processing on the first downlink data, so that the device on the remote side can reduce the power consumption caused by the first processing, that is, the application provides
  • the optical access system can reduce the power consumption of devices on the far side.
  • the optical access system provided by the present application may further include a beam splitter.
  • the optical access device in the optical access system is connected to each of the at least one PHY processing entity by the optical splitter.
  • the optical access device is specifically configured to send, by using the optical splitter, the second downlink data in the form of a digital optical signal to each PHY processing entity.
  • the optical splitter may send the second downlink data in the form of a digital optical signal output by one optical access device to multiple PHY processing entities, and the multiple PHY processing entities process the multiple PHY processing entities.
  • the third downlink data in the form of an analog electrical signal is sent to a plurality of different CMs on the side of the terminal device, so that downlink data can be sent to multiple different CMs, so that multiple optical accesses can be eliminated in the optical access system.
  • the device can save the transmission cost of the optical access system.
  • the optical access device may include a switching control unit and an uplink processing unit and a MAC resource processing unit connected to the switching control unit.
  • the uplink processing unit is configured to receive the first downlink data, and send the first downlink data to the switching control unit, where the switching control unit is configured to receive the first downlink data sent by the uplink processing unit, and
  • the first downlink data is sent to the MAC resource processing unit, and the second downlink data in the form of a digital electrical signal sent by the MAC resource processing unit is received, and the second downlink data in the form of a digital electrical signal is separately sent to the digital optical signal.
  • the MAC resource processing unit is configured to receive the first downlink data sent by the switching control unit, and perform a first processing on the first downlink data at the MAC layer to obtain second downlink data in the form of a digital electrical signal. And transmitting the second downlink data in the form of a digital electrical signal to the switching control unit.
  • the MAC resource processing unit can be set in the optical access device located at the central office, downlink data in the optical layer processing (ie, the first processing described above) in the optical network can be completed in the optical access device ( That is, the first downlink data), so that the function of the MAC layer does not need to be integrated in the device on the remote side, so that the device on the remote side can be reduced to some extent due to the processing of the first downlink data band at the MAC layer.
  • the power consumption that is, the optical access device provided by the present application can reduce the power consumption of the device on the remote side.
  • the foregoing MAC resource processing unit may be further configured to save the second downlink data in the form of the digital electrical signal.
  • the MAC resource processing unit may save the second downlink data in the form of a digital electrical signal in the MAC resource processing unit (specifically, may be stored in a storage module of the MAC resource processing unit).
  • the saved second downlink data (second downlink data in the form of digital electrical signals) can be read again in the MAC resource processing unit, thereby being able to avoid The second downlink data is incorrect, causing the second downlink data transmission to fail.
  • the optical access device may include at least one MAC resource processing unit, and one MAC resource processing unit of the at least one MAC resource processing unit (assumed to be the first MAC)
  • the resource processing unit may store the second downlink data in the form of a digital electrical signal processed by the MAC layer in the first MAC resource processing unit, and the other MAC resource processing unit in the at least one MAC resource processing unit (ie, the Each of the MAC resource processing units of the at least one MAC resource processing unit except the first MAC resource processing unit may also save the second downlink data in the form of a digital electrical signal processed by the MAC layer.
  • each of the MAC resource processing units (specifically, it may be stored in a storage module of each of the MAC resource processing units).
  • the data transmission service can be switched to any one of the other MAC resource processing units, so that the first MAC resource can be avoided.
  • the failure of the processing unit causes the second downlink data transmission to fail.
  • the optical access device may further include a video resource processing unit connected to the switching control unit.
  • the uplink processing unit is specifically configured to receive the video data and send the video data to the switching control unit, where the switching control unit is specifically configured to receive the video sent by the uplink processing unit.
  • the video resource processing unit is configured to receive the video data sent by the switching control unit, and perform a third processing on the video data to obtain the processed video data, and the processed video The data is sent to the exchange control unit; the MAC resource processing unit is specifically configured to receive the processed video data sent by the exchange control unit, and perform the first processing on the processed video data at the MAC layer to obtain the second form in the form of a digital electrical signal.
  • Downstream data, and second downlink data in the form of digital electrical signals A switching control unit.
  • the video resource processing unit performs a third process (hereinafter referred to as video processing) on the video data received by the video resource processing unit, and may include recombining and encrypting the video data.
  • the video resource processing unit may filter, from the plurality of types of video data received by the terminal device, video data requested by the terminal device (hereinafter referred to as request video data), that is, at least one type of video data of the plurality of types of video data, and then Encrypting the requested video data, so as to prevent the video data from being tampered with during the transmission process, ensuring that the video data is transmitted securely, and the terminal device that requests the video data and has paid for the video data can follow the agreed decryption algorithm.
  • the video data is decrypted so that the video data can be acquired.
  • the video resource processing unit is further configured to save the processed video data.
  • the video resource processing unit may save the video data processed by the video resource processing unit in the video resource processing unit (specifically, may be stored in a storage module of the video resource processing unit). In this way, when the processed video data is erroneous (for example, lost), the saved processed video data can be read again in the video resource processing unit, thereby avoiding an error due to the processed video data.
  • the optical access device may include at least one video resource processing unit, and one of the at least one video resource processing unit (assuming that the first video resource processing unit) can process the processed
  • the video data is stored in the video resource processing unit, and the other video resource processing units in the at least one video resource processing unit (ie, the video resource processing unit in the at least one video resource processing unit except the first video resource processing unit)
  • Each of the video resource processing units may also save the processed video data processed by the video resource processing unit in each of the video resource processing units (specifically, may be stored in the storage module of each video resource processing unit),
  • the video data transmission service can be switched to any normal video resource processing unit of the other video resource processing unit, which can avoid processing due to the first video resource. Unit failure caused by this processing Video data transmission failure problem.
  • the optical access device may further include an interface unit that is connected to the switching control unit.
  • the switching control unit in the optical access device is specifically configured to send the second downlink data in the form of a digital electrical signal to the interface unit, where the interface unit is configured to receive the second downlink data in the form of a digital electrical signal sent by the switching control unit. And converting the second downlink data in the form of a digital electrical signal into second downlink data in the form of a digital optical signal, and transmitting the second downlink data in the form of a digital optical signal to the at least one PHY processing entity.
  • the downlink data in the form of a digital electrical signal, when the optical access is performed.
  • the interface unit in the optical access device may obtain the number obtained by the video resource processing unit and the MAC resource processing unit sent by the switching control unit in the optical access device.
  • the second downlink data in the form of an electrical signal is converted to second downlink data in the form of a digital optical signal, thereby transmitting the second downlink data in the form of the digital optical signal to at least one PHY processing entity located at the far end.
  • the application provides an optical access system, where the optical access system can include: an optical access device and at least one PHY processing entity connected to the optical access device.
  • the optical access system can be applied to the process of transmitting uplink data.
  • Each PHY processing entity of the at least one PHY processing entity is configured to receive first uplink data in the form of an analog electrical signal, and process the first uplink data in the form of the analog electrical signal at the PHY layer to obtain a digital optical signal form.
  • the optical access system since the first uplink data in the form of analog electrical signals can be processed at the PHY layer in the remote PHY processing entity, the digital electrical signal is processed at the MAC layer in the optical access device located at the central office.
  • the second uplink data in the form so there is no need to Integrating the functions of the MAC layer, so that the device on the remote side can reduce the power consumption caused by processing the second uplink data in the form of digital electrical signals at the MAC layer to some extent, that is, the optical access system provided by the present application can Reduce the power consumption of the device on the far side.
  • the optical access system provided by the present application may further include a beam splitter.
  • the optical access device is coupled to the PHY processing entity of the at least one PHY processing entity via the optical splitter.
  • the optical splitter is configured to collect second uplink data in the form of a digital optical signal sent by each PHY processing entity, and send the second uplink data in the form of the concentrated digital optical signal to the optical access device.
  • the application provides an optical access device, where the optical access device can include: an exchange control unit and an uplink processing unit and a MAC resource processing unit connected to the exchange control unit.
  • the optical access device can be applied to the process of transmitting downlink data.
  • the uplink processing unit is configured to receive the first downlink data, and send the first downlink data to the switching control unit, where the switching control unit is configured to receive the first downlink data sent by the uplink processing unit, and The first downlink data is sent to the MAC resource processing unit, and the second downlink data in the form of a digital electrical signal sent by the MAC resource processing unit is received; the MAC resource processing unit is configured to receive the first downlink data sent by the switching control unit, and The MAC layer performs a first process on the first downlink data, obtains second downlink data in the form of a digital electrical signal, and sends the second downlink data in the form of the digital electrical signal to the switching control unit.
  • the optical access device provided by the present application can set the MAC resource processing unit in the optical access device located at the central office, so that the optical layer processing (ie, the first processing described above) optical network can be completed in the optical access device.
  • the downlink data (that is, the first downlink data), so that the function of the MAC layer does not need to be integrated in the device on the remote side, so that the device on the remote side can be reduced to some extent due to the processing at the MAC layer.
  • the power consumption of the downlink data is that the optical access device provided by the present application can reduce the power consumption of the device on the remote side.
  • the foregoing MAC resource processing unit is further configured to save the second downlink data in the form of the digital electrical signal.
  • the optical access device provided by the application may further include a video resource processing unit connected to the switching control unit.
  • the uplink processing unit is specifically configured to receive the video data and send the video data to the switching control unit;
  • the switching control unit is specifically configured to receive the video data sent by the uplink processing unit, and Transmitting the video data to the video resource processing unit, and receiving the processed video data sent by the video resource processing unit, and transmitting the processed video data to the MAC resource processing unit, and receiving the digital power sent by the MAC resource processing unit.
  • the video resource processing unit is configured to receive the video data sent by the switching control unit, and perform second processing on the video data, obtain the processed video data, and send the processed video data to
  • the switching control unit is configured to receive the processed video data sent by the switching control unit, and perform the first processing on the processed video data at the MAC layer to obtain the second downlink data in the form of a digital electrical signal. And transmitting the second downlink data in the form of the digital electrical signal to the exchange control Unit.
  • the video resource processing unit performs the second processing on the video data received by the video resource processing unit. It is understood that the video resource processing unit performs video processing on the video data.
  • the video processing may be referred to as a third processing (ie, a third processing in the fourth alternative implementation of the first aspect above).
  • the video resource processing unit is further configured to save the processed video data.
  • the optical access device provided by the present application may further include an interface unit connected to the switching control unit.
  • the switching control unit in the optical access device is specifically configured to send the second downlink data in the form of the digital electrical signal to the interface unit, where the interface unit is configured to receive the second downlink in the form of a digital electrical signal sent by the switching control unit.
  • the application provides an optical access device, where the optical access device may include: an exchange control unit and an uplink processing unit and a MAC resource processing unit connected by the exchange control unit.
  • the optical access device can be applied to the process of transmitting uplink data.
  • the switching control unit is configured to receive the first uplink data, send the first uplink data to the MAC resource processing unit, and receive the second uplink data in the form of a digital electrical signal sent by the MAC resource processing unit, and the digital electrical signal.
  • the MAC resource processing unit is configured to receive the first uplink data in the form of a digital electrical signal sent by the switching control unit, and process the first uplink data in the form of the digital electrical signal at the MAC layer Obtaining second uplink data in the form of a digital electrical signal, and transmitting the second uplink data in the form of the digital electrical signal to the switching control unit;
  • the uplink processing unit is configured to receive the second uplink in the form of a digital electrical signal sent by the switching control unit And transmitting the second uplink data in the form of the digital electrical signal to the device in the optical network or transmitting the second uplink data in the form of the digital electrical signal to the device in the optical network.
  • the optical access device provided by the present application can set the MAC resource processing unit in the optical access device located at the central office, so that the uplink data in the optical layer processing optical network can be completed in the optical access device (ie, the first Upstream data), so the function of the integrated MAC layer is not required in the device on the remote side, so that the device on the remote side can reduce the power consumption caused by processing the first uplink data at the MAC layer to a certain extent. That is, the optical access device provided by the present application can reduce the power consumption of the device on the remote side.
  • the optical access device provided by the application further includes an interface unit that is connected to the switching control unit.
  • the interface unit is configured to receive first uplink data in the form of a digital optical signal, and convert the first uplink data in the form of the digital optical signal into first uplink data in the form of a digital electrical signal, and first in the form of the digital optical signal
  • the uplink data is sent to the exchange control unit.
  • the present application provides a method for processing data, which can be used to process downlink Data
  • the method may include: the optical access device receives and receives the first downlink data; and performs a first process on the first downlink data at the MAC layer to obtain second downlink data in the form of a digital electrical signal; and the digital Converting the second downlink data in the form of a signal to second downlink data in the form of a digital optical signal; and transmitting the second downlink data in the form of the digital optical signal to the at least one PHY processing entity, respectively.
  • the application provides The method of processing data may further include: the optical access device storing the second downlink data in the form of a digital electrical signal.
  • the optical access device when the first downlink data is video data, performs a first processing on the first downlink data at the MAC layer to obtain a digital electrical signal.
  • the method for processing data provided by the application may further include: the optical access device performs second processing on the video data, and obtains the processed video data; and the first downlink data in the MAC layer.
  • the first processing may be performed to obtain the second downlink data in the form of a digital electrical signal.
  • the optical access device may perform the first processing on the processed video data at the MAC layer to obtain the second downlink data in the form of a digital electrical signal.
  • the method for processing data provided by the application may further include: optical connection The device saves the processed video data.
  • the present application provides a method for processing data, where the method may be used to process uplink data, where the method may include: the optical access device receives the first uplink data; and processes the first uplink data at the MAC layer to obtain Transmitting the second uplink data in the form of a digital electrical signal, and transmitting the second uplink data in the form of a digital electrical signal to a device in the optical network or transmitting the second uplink data in the form of the digital electrical signal to the optical network as a digital optical signal device of.
  • FIG. 1 is a schematic structural diagram of a communication system according to an embodiment of the present invention.
  • FIG. 2 is a schematic structural diagram 1 of an optical access system according to an embodiment of the present invention.
  • FIG. 3 is a schematic structural diagram 2 of an optical access system according to an embodiment of the present disclosure.
  • FIG. 4 is a schematic structural diagram 1 of an optical access device according to an embodiment of the present disclosure.
  • FIG. 5 is a schematic structural diagram 2 of an optical access device according to an embodiment of the present disclosure.
  • FIG. 6 is a schematic structural diagram 3 of an optical access device according to an embodiment of the present disclosure.
  • FIG. 7 is a first schematic diagram of a method for processing data according to an embodiment of the present invention.
  • FIG. 8 is a second schematic diagram of a method for processing data according to an embodiment of the present disclosure.
  • FIG. 9 is a third schematic diagram of a method for processing data according to an embodiment of the present disclosure.
  • FIG. 10 is a schematic diagram 4 of a method for processing data according to an embodiment of the present invention.
  • first and second and the like in the specification and claims of the embodiments of the present invention are used to distinguish different objects, and are not intended to describe a specific order of the objects.
  • first downlink data and the second downlink data and the like are used to distinguish different downlink data, instead of describing a specific order of downlink data.
  • the words “exemplary” or “such as” are used to mean an example, illustration, or illustration. Any embodiment or design described as “exemplary” or “for example” in the embodiments of the invention should not be construed as preferred or advantageous over other embodiments or designs. Rather, the use of the words “exemplary” or “such as” is intended to present the concepts in a particular manner.
  • the OLT at the central office receives the downlink signal and processes the downlink signal, and then sends the processed downlink signal to the optical signal.
  • the CMTS of the far end receives the optical signal, converts the optical signal into an electrical signal, and processes the electrical signal at the MAC layer processing and the PHY layer. Since the CMTS is located at the far end, and the CMTS needs to process the optical signals it receives at the MAC layer and the PHY layer, processing the optical signals at the MAC layer and the PHY layer usually consumes a large amount of power, thus causing the devices on the far side. Power consumption is usually large.
  • an embodiment of the present invention provides a method for processing data, an optical access device, and an optical access system.
  • the optical access device at the central office of the optical access system can receive the downlink data (hereinafter referred to as the first downlink data), and
  • the MAC layer in the optical access device performs the first processing on the first downlink data, obtains the second downlink data in the form of a digital electrical signal, and sends the second downlink data in the form of the digital electrical signal as a digital optical signal.
  • Each of the at least one PHY processing entity receives the second downlink data sent by the optical access device, and performs a second process on the second downlink data at the PHY layer to obtain the third downlink data, and the third
  • the third downlink data is sent to the CM, and the third downlink data received by the CM is demodulated and sent to the terminal device, so that the terminal device receives the first downlink data sent by the optical network.
  • the optical access system provided by the embodiment of the present invention can perform the first processing on the first downlink data at the MAC layer in the optical access device located at the central office, and the PHY located at the remote end.
  • the PHY layer in the processing entity performs the second processing on the second downlink data, so that the device on the remote side does not need to integrate the MAC layer function, that is, the device on the remote side does not need to perform the first processing on the first downlink data. Therefore, the embodiment of the present invention can enable the device on the remote side to reduce the power consumption caused by the first process, that is, the optical access device and the optical access system provided by the embodiments of the present invention can reduce the work of the device on the remote side. Consumption.
  • FIG. 1 is a schematic structural diagram of a communication system according to an embodiment of the present invention.
  • the communication system includes an optical access device 10 and at least one PHY processing entity (assuming that there are two PHY processing entities in the communication system shown in FIG. 1, which are a PHY processing entity 11a and a PHY processing entity 11b, respectively.
  • at least one CM (assuming that there are three CMs in the communication system shown in Figure 1, CM 12a, CM 12b, and CM 12c, respectively).
  • the optical access device 10 is connected to each of the at least one PHY processing entity (ie, the PHY processing entity 11a and the PHY processing entity 11b), and each of the PHY processing entities is connected to at least one CM.
  • PHY processing entity 11a may be coupled to CM 12a and CM 12b
  • PHY processing entity 11b may be coupled to CM 12c.
  • the optical access device 10 can transmit the downlink data it receives as a digital optical signal to each of the at least one PHY processing entity, and then each PHY processing entity can receive the received digital optical signal.
  • the downlink data is converted into downlink data in the form of digital electrical signals, and the downlink data in the form of digital electrical signals is converted into downlink data in the form of analog electrical signals, and each PHY processing entity can send downlink data in the form of analog electrical signals to At least one CM connected to it.
  • the PHY processing entity may be a device or an entity integrated with a PHY processing function, or may be an independent PHY processing device.
  • the number of PHY processing entities may be set according to the deployment requirements of the actual optical network, which is not specifically limited in the embodiment of the present invention. That is, the number of PHY processing entities in the communication system shown in FIG. 1 is exemplified for the communication system provided by the embodiment of the present invention, and does not form any limitation on the communication system provided by the embodiment of the present invention.
  • the optical access device 10 and the at least one PHY processing entity may be referred to as an optical access system, and the optical access system may transmit uplink data and downlink. data.
  • the optical access system may receive downlink data (such as video data, etc.) sent by a device (such as a switch or a router) in the optical network, and process the downlink data to obtain a digital optical signal format.
  • the downlink data is converted into downlink data in the form of digital optical signals
  • the downlink data in the form of digital electrical signals is converted into downlink data in the form of analog electrical signals and then transmitted to the terminal device side.
  • the CM sends the downlink data in the form of an analog electrical signal to the terminal device by the CM, thereby implementing downlink data transmission.
  • the optical access system may receive uplink data (such as request data of the terminal device) in the form of an analog electrical signal sent by the CM on the terminal device side, and convert the uplink data in the form of the analog electrical signal into Uplink data in the form of a digital electrical signal, and converting the uplink data in the form of a digital electrical signal into uplink data in the form of a digital optical signal, and then processing the upstream data in the form of the digital optical signal, and processing the processed digital optical signal form
  • the uplink data is sent to the device in the optical network or the processed uplink data in the form of the digital optical signal is sent to the device in the optical network as a digital electrical signal, thereby implementing uplink data transmission.
  • the optical access system provided by the embodiment of the present invention is described in detail below by taking the downlink data and the uplink data as an example.
  • the optical access system provided by the embodiment of the present invention is exemplarily described by taking the downlink data in the optical access system as an example.
  • an embodiment of the present invention provides an architectural diagram of an optical access system, where the optical access system includes an optical access device 20 and at least one PHY processing connected to the optical access device 20. Entity 21.
  • the optical access device 20 is configured to receive downlink data (hereinafter referred to as first downlink data) sent by a device (for example, a switch or a router) in an optical network, and a MAC layer pair in the optical access device 20 Determining, by the first downlink data, the second downlink data in the form of a digital electrical signal, and transmitting the second downlink data in the form of the digital electrical signal to the at least one PHY processing entity in the form of a digital optical signal (specifically Transmitted to each of the at least one PHY processing entity).
  • first downlink data hereinafter referred to as first downlink data
  • a device for example, a switch or a router
  • a MAC layer pair in the optical access device 20 Determining, by the first downlink data, the second downlink data in the form of a digital electrical signal, and transmitting the second downlink data in the form of the digital electrical signal to the at least one PHY processing entity in the form of a digital optical signal (specifically Transmitted to each of the at least
  • Each of the at least one PHY processing entity 21 shown in FIG. 2 is configured to receive second downlink data in the form of a digital optical signal transmitted by the optical access device 20, and to the digital optical signal at its PHY layer
  • the second downlink data of the form is subjected to the second processing, the third downlink data in the form of an analog electrical signal is obtained, and the third downlink data in the form of the analog electrical signal is sent to the CM.
  • the foregoing first processing may include: packetizing and encapsulating downlink data.
  • the MAC layer in the optical access device performs the first processing on the first downlink data, and may include: the first downlink data packet received by the optical access device And then packing the first downlink data after the packetization to obtain the second downlink data in the form of a digital electrical signal.
  • the optical access device receives the first downlink data, specifically, the optical access device sequentially receives the data packet sent by the device in the optical network, to receive the first downlink data, which is exemplary.
  • the first processing is described by taking the first downlink data as a data packet (hereinafter referred to as the first data packet) as an example.
  • the optical access device may packetize the first downlink data, that is, divide the first data packet into multiple A packet of a smaller length (hereinafter referred to as a sub-packet), and then processing and transmitting a plurality of sub-packets at the MAC layer, enables the first downlink data to be smoothly processed and transmitted at the MAC layer.
  • a sub-packet A packet of a smaller length
  • the embodiment of the present invention may resend the sub-packet in which the transmission error occurs without resending the sub-packet. Corresponding data packets before unpacking, thus saving the overhead of resending packets with transmission errors.
  • a transmission error for example, packet loss
  • the The first data packet is packetized, that is, the first data packet is divided into multiple sub-packets.
  • the first data packet may be divided into sub-packets (which may be referred to as a first sub-packet) having a length of 1460 bytes and a length of 540 bytes.
  • Sub-packet (can be the second sub-packet) and follow the first data
  • the packet header of the packet packs the sub-packet sub-packet, and the functional unit that receives the plurality of sub-packets (for example, the switching control unit in the embodiment of the present invention) can learn that the plurality of sub-packets are in the first data packet. Subpackage.
  • the optical access device may encapsulate the plurality of sub-packets after the packetization to obtain the encapsulated downlink data, that is, obtain the second downlink in the form of a digital electrical signal. data.
  • the optical access device may encapsulate the plurality of sub-packets after the packetization into Ethernet data according to an Ethernet protocol.
  • the optical access device may also be the second downlink data in the form of a digital electrical signal.
  • a channel for transmitting second downlink data in the form of the digital electrical signal and a second downlink data in the form of the digital electrical signal are allocated a bandwidth for transmitting second downlink data in the form of the digital electrical signal.
  • the optical access device may allocate a downlink channel with better channel quality for the second downlink data in the form of a digital electrical signal and a second downlink data for the digital electrical signal to allocate the second downlink data for the digital electrical signal.
  • the bandwidth required for the transmission rate is such that the second downlink data in the form of digital electrical signals is smoothly transmitted in the downlink channel.
  • optical access system provided by the embodiment of the present invention may include at least one optical access device, and the number of the optical access devices may be determined according to actual usage requirements, which is not specifically limited in the embodiment of the present invention.
  • the optical access device may send the second downlink data in the form of a digital electrical signal to the at least one PHY processing entity in the form of a digital optical signal.
  • the second downlink data in the form of a digital electrical signal can be converted into a digital optical signal by the optical access device and then sent to the at least one PHY processing entity.
  • the second downlink data in the form of a digital electrical signal may be converted into the second downlink data in the form of a digital optical signal by an interface unit in the optical access device, or may be converted by a signal form.
  • the other functional units of the function convert the second downlink data in the form of a digital electrical signal into the second downlink data in the form of a digital optical signal, which is not limited in the embodiment of the present invention.
  • the foregoing second processing may include: converting downlink data in the form of a digital optical signal into downlink data in the form of a digital electrical signal, and converting the downlink data in the form of a digital electrical signal into an analog electrical signal format. Downstream data.
  • each PHY processing entity of the at least one PHY processing entity performs second processing on the second downlink data in the form of digital electrical signals at its PHY layer, and may include: each PHY processing entity Converting the second downlink data in the form of the received digital optical signal into downlink data in the form of a digital electrical signal, and converting the downlink data in the form of the digital electrical signal into downlink data in the form of an analog electrical signal, ie, the analog electrical signal form described above The third downlink data.
  • the optical access system in the optical access system, can output the downlink data.
  • the downlink data in the form of an analog electrical signal i.e., the third downlink data in the form of the analog electrical signal described above
  • the entity can be processed by the PHY (usually the PHY processing entity is located at the end)
  • the downlink data in the form of digital optical signals is converted into downlink data in the form of digital electrical signals, and then the downlink data in the form of digital electrical signals is converted into downlink data in the form of analog electrical signals. Since the digital signal has strong anti-interference ability during transmission, that is, the stability of the digital signal is relatively good, transmitting downlink data in the form of digital signal can reduce the linear distortion of the downlink data during transmission.
  • the optical access device at the central office of the optical access system can receive the first downlink data, and the MAC layer in the optical access device receives the first downlink data.
  • the optical access device at the central office of the optical access system can receive the first downlink data
  • the MAC layer in the optical access device receives the first downlink data.
  • Performing a first process obtaining second downlink data in the form of a digital electrical signal, and transmitting the second downlink data in the form of the digital electrical signal to the at least one PHY processing entity at the remote end of the optical access system in the form of a digital optical signal .
  • Each of the at least one PHY processing entity receives second downlink data in the form of a digital optical signal transmitted by the optical access device, and performs a second processing on the second downlink data in the form of the digital optical signal at the PHY layer, Obtaining a third downlink data in the form of an analog electrical signal, and transmitting the third downlink data in the form of the analog electrical signal to the CM, and demodulating the third downlink data in the form of the analog electrical signal received by the CM, and transmitting the third downlink data to the terminal device, Thereby, the terminal device receives the first downlink data sent by the optical network.
  • the optical access system provided by the embodiment of the present invention can perform the first processing on the first downlink data at the MAC layer in the optical access device located at the central office, and the PHY located at the remote end.
  • the PHY layer in the processing entity performs the second processing on the second downlink data in the form of the digital optical signal. Therefore, the device on the remote side does not need to integrate the function of the MAC layer, that is, the device on the remote side does not need to perform the first downlink.
  • the data is first processed, so that the device on the remote side can reduce the power consumption caused by the first processing, that is, the optical access system provided by the embodiment of the present invention can reduce the device on the remote side. Power consumption.
  • the second downlink data in the form of digital electrical signals processed by the MAC layer in the optical access device may be separately sent in the form of digital optical signals.
  • Each of the plurality of PHY processing entities is processed by the PHY, thereby eliminating the need to integrate multiple MAC layer functions on the remote side device (typically, on the remote side of the device, the MAC functional entity and the PHY process Entities exist in pairs, that is, one PHY processing entity corresponds to one MAC function entity, so the cost of transmitting downlink data by the optical access system can be reduced to some extent.
  • the optical access system provided by the embodiment of the present invention may further include a beam splitter 22.
  • the optical access device 20 is connected to each of the at least one PHY processing entity 21 via the optical splitter 22, and the optical access device in the optical access system can pass the optical optical signal in the form of a digital optical signal.
  • Two downlink data is distributed to each PHY processing entity.
  • the optical splitter can be used to distribute downlink data.
  • the optical splitter can include at least one upstream optical interface and multiple downstream optical interfaces.
  • the optical splitter can receive downlink data in the form of a digital optical signal output by a higher-level device (for example, an optical access device (for example, an OLT)) from an upstream optical interface of the optical splitter (for example, the second downlink in the form of the digital optical signal described above) Data, and the downlink data in the form of the digital optical signal is allocated to the plurality of downlink optical interfaces of the optical splitter, and the downlink data in the form of the digital optical signal is sent to the optical splitter through the multiple downlink optical interfaces.
  • a higher-level device for example, an optical access device (for example, an OLT)
  • OLT optical access device
  • the downlink data in the form of the digital optical signal is allocated to the plurality of downlink optical interfaces of the optical splitter, and the downlink data in the form of the digital optical signal is sent to the optical splitter
  • the number of downlink optical interfaces of the optical splitter is generally greater than or equal to the number of PHY processing entities connected to the downstream optical interface of the optical splitter.
  • the data is sent to at least one PHY processing entity 21.
  • the number of PHY processing entities in the optical access system is N.
  • the optical access device may send the second downlink data in the form of a digital optical signal output by the optical access device to the plurality of PHY processing entities through the optical splitter, and the multiple PHY processing entities respectively process the respective downlink processing data.
  • the third downlink data in the form of an analog electrical signal is sent to different CMs on the side of the terminal device, so that downlink data can be sent to multiple different CMs, so that multiple optical access devices can be eliminated in the optical access system. It can save the transmission cost of the optical access system.
  • optical access device and the process of processing and transmitting downlink data in the optical access device provided by the embodiment of the present invention will be described in detail in the following embodiments.
  • the optical access system provided by the embodiment of the present invention is exemplarily described as an example of transmitting the uplink data in the optical access system.
  • the optical access system includes an optical access device 20 and at least one PHY processing entity 21 connected to the optical access device 20 .
  • Each PHY processing entity of the at least one PHY processing entity 21 is configured to receive uplink data in the form of an analog electrical signal sent by at least one CM connected to the PHY processing entity (hereinafter referred to as a first uplink in the form of an analog electrical signal Data), and each PHY processing entity processes the first uplink data in the form of the analog electrical signal at the PHY layer, obtains second uplink data in the form of a digital optical signal, and transmits the second uplink data in the form of the digital optical signal to the optical Access device 20.
  • a first uplink in the form of an analog electrical signal Data hereinafter referred to as a first uplink in the form of an analog electrical signal Data
  • each PHY processing entity processes the first uplink data in the form of the analog electrical signal at the PHY layer, obtains second uplink data in the form of a digital optical signal, and transmits the second uplink data in the form of the digital optical signal to the optical Access device 20.
  • the optical access device 20 as shown in FIG. 2 is configured to receive second uplink data in the form of a transmitted digital optical signal transmitted by at least one PHY processing unit, and may be in the form of the digital optical signal in the optical access device 20 Converting the second uplink data into second uplink data in the form of a digital electrical signal, and processing, by the MAC layer in the optical access device, the second uplink data in the form of the digital electrical signal to obtain third uplink data in the form of a digital electrical signal, And the optical access device sends the third uplink data in the form of a digital electrical signal to a device (such as a switch or a router) in the optical network or sends the third uplink data in the form of a digital electrical signal to the optical digital signal.
  • the devices in the network can realize the transmission of uplink data.
  • the processing, by the at least one PHY processing entity, the first uplink data in the form of an analog electrical signal may include: converting the first uplink data in the form of the analog electrical signal into the uplink data in the form of a digital electrical signal, And converting the uplink data in the form of digital electrical signals into uplink data in the form of digital optical signals.
  • the first uplink data in the form of an analog electrical signal received by the at least one PHY processing entity may be request data, where the request data may include the online authentication data of the terminal device and the video request of the terminal device.
  • the analog electrical signal may be at its PHY layer Forming the first uplink data into uplink data in the form of a digital electrical signal, and then converting the uplink data in the form of the digital electrical signal into uplink data in the form of a digital optical signal to obtain second uplink data in the form of a digital optical signal, and then The second uplink data in the form of a digital optical signal is sent to the optical access device.
  • the processing, by the optical access device, the second uplink data in the form of a digital electrical signal at the MAC layer may include: decapsulating the second uplink data in the form of the digital electrical signal.
  • the optical access device may decapsulate the second uplink data in the form of the digital electrical signal at its MAC layer.
  • the second uplink data in the form of the digital electrical signal may be decapsulated according to an Ethernet protocol to obtain digital power.
  • the third uplink data in the form of a signal may include: decapsulating the second uplink data in the form of the digital electrical signal.
  • the optical access device may decapsulate the second uplink data in the form of the digital electrical signal at its MAC layer.
  • the second uplink data in the form of the digital electrical signal may be decapsulated according to an Ethernet protocol to obtain digital power.
  • the third uplink data in the form of a signal may include: decapsulating the second uplink data in the form of the digital electrical signal.
  • each of the at least one PHY processing entity in the optical access system may receive an uplink in the form of an analog electrical signal sent by at least one CM connected to the PHY processing entity.
  • Data such as the first uplink data in the form of an analog electrical signal described above
  • processing the first uplink data in the form of the analog electrical signal at its PHY layer obtaining second uplink data in the form of a digital optical signal, and the digital optical signal
  • the second uplink data in the form is sent to the optical access device.
  • the optical access device receives second uplink data in the form of a digital optical signal transmitted by at least one PHY processing entity, and converts the second uplink data in the form of the digital optical signal into second uplink data in the form of a digital electrical signal, and in its MAC Processing, by the layer, the second uplink data in the form of the digital electrical signal, obtaining third uplink data in the form of a digital electrical signal, and transmitting the third uplink data in the form of the digital electrical signal to a device in the optical network or in the form of the digital electrical signal
  • the third uplink data is sent to the devices in the optical network in the form of digital optical signals.
  • the optical access system provided by the embodiment of the present invention, since the first uplink data in the form of an analog electrical signal can be processed in the PHY layer in the remote PHY processing entity, the optical connection at the central office is performed.
  • the MAC layer in the device processes the second uplink data in the form of a digital electrical signal, so that the function of the MAC layer does not need to be integrated in the device on the remote side, so that the device on the remote side can make the device on the remote side to a certain extent
  • the power consumption system of the embodiment of the present invention can reduce the power consumption of the device on the remote side by reducing the power consumption of the second uplink data in the form of a digital electrical signal.
  • the MAC layer processing terminal device in the optical access device in the optical access system may be processed by multiple CMs and multiple PHYs.
  • the first uplink data sent by the entity so that there is no need to integrate multiple MAC layers on the device on the remote side (generally, on the device on the remote side, the MAC function entity exists in pairs with the PHY processing entity, that is, one
  • the PHY processing entity corresponds to one MAC function entity, so the cost of transmitting the uplink data by the optical access system can be reduced to some extent.
  • the optical access system may further include a beam splitter 22.
  • the optical access device 20 is coupled to each of the at least one PHY processing entity 21 via the optical splitter 22 for concentrating the second uplink in the form of a digital optical signal transmitted by each PHY processing entity. Data, and transmitting the second uplink data in the form of the concentrated digital optical signal to the optical access device.
  • the optical splitter can be used to collect uplink data in addition to the downlink data.
  • the optical splitter can include at least one upstream optical interface and multiple downstream optical interfaces.
  • the optical splitter can receive uplink data in the form of digital optical signals sent by the plurality of lower-level devices connected to the optical splitter through the plurality of downlink optical interfaces of the optical splitter, and concentrate the uplink data in the form of the multiple digital optical signals. Going to an upstream optical interface of the optical splitter, and transmitting the uplink data in the form of the concentrated digital optical signal to the upper-level device connected to the optical splitter.
  • the physical connection, and the optical splitter can receive the second uplink data in the form of a digital optical signal sent by each PHY processing entity through the N downlink optical interfaces of the optical splitter, and the digital optical signal sent by each PHY processing entity
  • the two uplink data are collected together, and then the second uplink data in the form of the digital optical signal is sent to the optical access device 20, where the number of PHY processing entities in the optical access system is N.
  • optical splitter For other descriptions of the optical splitter, refer to the related description of the optical splitter in the foregoing embodiment (in the process of transmitting downlink data in the optical access system), and details are not described herein again.
  • the embodiment of the present invention provides an optical access device, where the optical access device (usually, the optical access device is located at the central office) can transmit uplink data and downlink data.
  • the optical access device may receive downlink data (such as video data, etc.) sent by the device in the optical network, and process the downlink data to obtain downlink data in the form of a digital optical signal, and The downlink data in the form of the digital optical signal is sent to the remote PHY processing entity, and the downlink data in the form of the digital optical signal is converted into the downlink data in the form of an analog electrical signal by the PHY processing entity, and the analog electrical signal is transmitted through the CM.
  • downlink data such as video data, etc.
  • the form of downlink data is sent to the terminal device, thereby implementing downlink data transmission.
  • the optical access device may receive uplink data sent by the terminal device via the CM and the PHY processing entity (for example, request data of the terminal device, the uplink data is in the form of a digital optical signal), and the digital optical signal is Forming the uplink data into uplink data in the form of a digital electrical signal, and processing the uplink data in the form of the digital electrical signal, and transmitting the uplink data in the form of a digital electrical signal to a device in the optical network or uplink data in the form of the digital electrical signal It is sent to devices in the optical network in the form of digital optical signals, thereby realizing the transmission of uplink data.
  • the optical access device provided by the embodiment of the present invention is described in detail below by taking the downlink data and the uplink data as an example.
  • the optical access device provided by the embodiment of the present invention is exemplarily described by taking the downlink data in the optical access device as an example.
  • FIG. 4 is a schematic structural diagram of an optical access device according to an embodiment of the present invention.
  • the optical access device includes an exchange control unit 30 and an uplink processing unit 31 and a MAC resource connected to the exchange control unit 30. Processing unit 32.
  • the uplink processing unit 31 is configured to receive downlink data (for example, first downlink data) sent by a device (for example, a switch or a router) in the optical network, and send the first downlink data to the switching control unit 30.
  • downlink data for example, first downlink data
  • a device for example, a switch or a router
  • the switching control unit 30 is configured to receive the first downlink data sent by the uplink processing unit 31, and send the first downlink data to the MAC resource processing unit 32, and receive the digital electrical signal form sent by the MAC resource processing unit 32.
  • the second downlink data is configured to receive the first downlink data sent by the uplink processing unit 31, and send the first downlink data to the MAC resource processing unit 32, and receive the digital electrical signal form sent by the MAC resource processing unit 32.
  • the second downlink data is configured to receive the first downlink data sent by the uplink processing unit 31, and send the first downlink data to the MAC resource processing unit 32, and receive the digital electrical signal form sent by the MAC resource processing unit 32.
  • the MAC resource processing unit 32 is configured to receive the first downlink data sent by the switching control unit 30, and perform a first processing on the first downlink data at the MAC layer, that is, process the first downlink data at the MAC layer to obtain a number.
  • the second downlink data in the form of an electrical signal and the second downlink data in the form of the digital electrical signal are transmitted to the switching control unit 30.
  • the uplink processing unit 31 shown in FIG. 4 may be an interface board that is connected to a device (such as a switch or a router) in an optical network.
  • the uplink processing unit 31 can receive the first downlink data sent by the switch or the router in the optical network, and the first downlink data can be downlink data in the form of a digital electrical signal or downlink data in the form of a digital optical signal.
  • each unit of the optical access device can process downlink data in the form of digital electrical signals, and cannot process downlink data in the form of digital optical signals.
  • the uplink processing unit 31 may convert the first downlink data in the form of the digital optical signal into a digital electrical signal.
  • the first downlink data is then sent to the switching control unit 30 in the first downlink data in the form of the converted digital electrical signal.
  • the uplink processing unit may be further configured to convert a code rate of the downlink data (the downlink data is video data) received by the uplink processing unit, that is, the uplink processing unit may receive the downlink data.
  • the bit rate of the downlink data is converted to the code rate required by the optical access device.
  • the uplink data received by the uplink processing unit has a code rate of 10.3125 gigabits per second (Gbps), and the optical access device requires a code rate of 12.5 Gbps, and the uplink processing unit can use the downlink.
  • the bit rate of the data is converted to 12.5 Gbps.
  • the uplink processing unit may be further configured to convert an encoding format of a level of the received downlink data (the downlink data is in an electrical signal format), that is, the uplink processing unit may The encoded format of the level of the received downlink data is converted into an encoding format of the level that the optical access device can process, for example, the downlink data received by the optical access device can be converted into a Gigabit Ethernet (GE) encoding format to Non Return Zero (NRZ) encoding format.
  • GE Gigabit Ethernet
  • NRZ Non Return Zero
  • the switching control unit 30 may be configured to exchange data between the units in the optical access device.
  • the switching control unit 30 may receive the first downlink data sent by the uplink processing unit 31. And sending the first downlink data to the MAC resource processing unit 32, and then receiving the second downlink data in the form of a digital electrical signal processed by the MAC resource processing unit 32, and transmitting the second downlink data in the form of the digital electrical signal.
  • the optical access device an interface unit.
  • the switching control unit 30 may be further configured to control other units in the optical access device (for example, the uplink processing unit 31 and the MAC resource processing unit 32, etc.), specifically: switching control Unit 30 can monitor the status of various units of the optical access device (eg, Whether the connection between the units is abnormal, whether the operation of each unit is normal, and each unit is controlled and managed according to the state of each unit of the optical access device.
  • switching control Unit 30 can monitor the status of various units of the optical access device (eg, Whether the connection between the units is abnormal, whether the operation of each unit is normal, and each unit is controlled and managed according to the state of each unit of the optical access device.
  • the performing, by the MAC resource processing unit, the first processing of the first downlink data by the MAC layer may include: packetizing and encapsulating the first downlink data.
  • the number of the MAC resource processing units in the optical access device may be at least one.
  • a MAC resource processing unit hereinafter referred to as a first MAC resource processing unit, for example, the MAC resource processing unit 32 shown in FIG. 4
  • the first MAC resource processing unit is in the MAC layer.
  • the first MAC resource processing unit may send the second downlink data in the form of the digital electrical signal to the first MAC resource.
  • the switching control unit connected to the processing unit, the first MAC resource processing unit may further save the second downlink data in the form of the digital electrical signal in the first MAC resource processing unit (specifically, may be saved in the first MAC resource processing unit In the storage module).
  • the saved second downlink data can be read again in the first MAC resource processing unit, thereby being able to The problem that the second downlink data transmission fails due to an error of the second downlink data is avoided.
  • each of the at least one MAC resource processing unit is connected to the exchange control unit.
  • each of the MAC resource processing units has the same function as the MAC resource processing unit 32 shown in FIG. 4 above.
  • the at least one MAC resource processing unit refer to the foregoing for the MAC resource shown in FIG. A related description of processing unit 32.
  • one of the at least one MAC resource processing unit may save the second downlink data in the form of a digital electrical signal processed by the MAC layer.
  • each of the other MAC resource processing units in the at least one MAC resource processing unit may also store the second downlink data in the form of a digital electrical signal processed by the MAC layer in each of the MAC resource processing units (specifically, may be stored in the storage module of each of the MAC resource processing units).
  • the first MAC resource processing unit fails to process and transmit data, the data transmission service can be switched to any one of the other MAC resource processing units, so that the first MAC resource can be avoided.
  • the failure of the processing unit causes the second downlink data transmission to fail.
  • each of the at least one MAC resource processing unit may be connected to the exchange control unit by using a different interface on the switching control unit.
  • the number of the MAC resource processing units in the optical access device may be determined according to actual usage requirements, which is not specifically limited in the embodiment of the present invention.
  • the uplink processing unit in the optical access device may receive the first downlink data, and send the first downlink data to the switching control unit.
  • the switching control unit After receiving the first downlink data sent by the uplink processing unit, the switching control unit sends the first downlink data to the MAC resource processing unit.
  • the MAC resource processing unit receives the first downlink data of the transmission control, and performs a first processing on the first downlink data at the MAC layer to obtain second downlink data in the form of a digital electrical signal, and the digital electrical signal
  • the second downlink data is sent to the exchange control unit.
  • the MAC resource processing unit can be set in the optical access device located at the central office, the MAC layer processing can be completed in the optical access device (ie, the first Processing the downlink data in the optical network (that is, the first downlink data), so that the function of the MAC layer does not need to be integrated in the device on the remote side, so that the device on the remote side can make the device on the remote side to a certain extent
  • the optical access device provided by the embodiment of the present invention can reduce the power consumption of the device on the remote side by reducing the power consumption caused by processing the first downlink data at the MAC layer.
  • the optical access device provided by the embodiment of the present invention may further include a video resource processing unit 33 connected to the switching control unit 30.
  • the video resource processing unit 33 is configured to process the video data.
  • the uplink processing unit 31 shown in FIG. 5 is specifically configured to receive video data (ie, first downlink data) sent by the device in the optical network, and send the video data to the switching control unit 30.
  • video data ie, first downlink data
  • the switching control unit 30 is specifically configured to receive the video data sent by the uplink processing unit 31, and send the video data to the video resource processing unit 33, and receive the video resource processing unit 33 for processing by the video resource processing unit 33.
  • Video data, and the processed video data is sent to the MAC resource processing unit 32, and receives the second downlink data in the form of a digital electrical signal sent by the MAC resource processing unit 32 (ie, the MAC resource processing unit 32 after processing at the MAC layer) Downstream data in the form of digital electrical signals).
  • the video resource processing unit 33 is configured to receive the video data sent by the switching control unit, and may perform a second process on the video data, and send the processed video data to the switching control unit 30.
  • the MAC resource processing unit 32 is specifically configured to receive the video data processed by the video resource processing unit 33 sent by the switching control unit 30, and perform the first processing on the processed video data in the MAC layer to obtain a digital electrical signal.
  • the second downlink data and the second downlink data in the form of the digital electrical signal are sent to the switching control unit 30.
  • the video resource processing unit performs the second processing on the received video data, which may be understood as: the video resource processing unit performs the video data.
  • Video processing In order to distinguish between the second processing (ie, video processing) herein and the digital optical signal received by the PHY processing entity in the optical access system in the above embodiment (such as the optical access system shown in FIG. 2 or FIG. 3)
  • the second processing of the second downlink data of the form is performed in the second processing of the PHY layer.
  • the second processing that is, the video processing, may be referred to as the third processing.
  • the following embodiments all represent the video resource processing by video processing or third processing.
  • the second process in the unit In order to distinguish between the second processing (ie, video processing) herein and the digital optical signal received by the PHY processing entity in the optical access system in the above embodiment (such as the optical access system shown in FIG. 2 or FIG. 3)
  • the second processing of the second downlink data of the form is performed in the second processing of the PHY layer.
  • the second processing that
  • uplink processing unit For the specific description of the uplink processing unit, refer to the foregoing embodiment in the embodiment of the present invention. For the related description of the uplink processing unit, details are not described herein again.
  • switching control unit For a detailed description of the switching control unit, refer to the related description of the switching control unit unit in the foregoing embodiment, and details are not described herein again.
  • the foregoing video processing may include: reassembling and encrypting video data, and the like.
  • the video resource processing unit performs video processing on the video data received by the video resource processing unit, and may include reassembling and encrypting the video data.
  • the video data received by the video resource processing unit may include multiple types of video data, and the video resource processing unit may filter at least one type of video data of the multiple types of video data (ie, video data requested by the terminal device, which are hereinafter referred to as requests).
  • the video data is then encrypted, and the encrypted request video data, that is, the processed video data, is obtained, and the processed video data is sent to the switching control unit.
  • the video data received by the video resource processing unit includes video data provided on the frequency band 1 to the frequency band 12 of a certain television station, and the video data requested by the terminal device (the terminal device may have multiple) includes the television station.
  • the video resource processing unit may filter out the video data requested by the terminal device from the video data provided in the frequency band 1 to the frequency band 12 received by the video resource processing unit. That is, the video data provided in the frequency band 1, the frequency band 3, the frequency band 5, and the frequency band 8 of the local television station can be screened to obtain the requested video data.
  • the video resource processing unit may use a data encryption algorithm to encrypt the requested video data, obtain the processed video data, and then send the processed video data to the switching control unit, and then access the optical device.
  • the other device in the system for example, the PHY processing entity
  • the CM may use a data decryption algorithm agreed with the optical access device to decrypt the processing.
  • the video data thereby obtaining the video data before encryption, that is, the video data requested by the terminal device.
  • the video resource processing unit in the optical access device may encrypt the video data, and the CM may decrypt the video data.
  • the encryption and decryption mechanism By setting the encryption and decryption mechanism, video data can be prevented from being tampered with during transmission, and video data can be securely transmitted.
  • the terminal device that requests the video data and has paid for the video data may decrypt the video data according to an agreed decryption algorithm, so that the video data can be acquired.
  • the number of video resource processing units in the optical access device may be at least one.
  • a video resource processing unit hereinafter referred to as a first video resource processing unit, for example, the video resource processing unit 33 shown in FIG. 5
  • the first video resource processing unit pairs the video.
  • the data ie, the first downlink data
  • the first video resource processing unit may send the processed video data to the exchange control connected to the first video resource processing unit.
  • the first video resource processing unit may further save the processed video data in the first video resource processing unit (specifically, may be saved in a storage module of the first video resource processing unit).
  • the processed video data when the processed video data is erroneous (for example, lost), the first video resource can be re-created.
  • the processed processed video data is read in the processing unit, so that the problem that the processed video data transmission fails due to an error in the processed video data can be avoided.
  • each of the at least one video resource processing unit is connected to the switching control unit.
  • each video resource processing unit has the same function as the video resource processing unit 33 shown in FIG. 5 above.
  • the at least one video resource processing unit refer to the video resource processing unit shown in FIG. 5 above.
  • one video resource processing unit (for example, the first video resource processing unit described above) in the at least one video resource processing unit may save the processed video data processed by the processed video data in the first video resource processing unit.
  • each of the video resource processing units of the at least one video resource processing unit ie, the video resource processing unit of the at least one video resource processing unit except the first video resource processing unit
  • the processed video data processed by the processing may be saved in each video resource processing unit (specifically, may be stored in a storage module of each video resource processing unit), and thus, the first video resource processing unit fails.
  • the video data transmission service can be switched to any normal video resource processing unit of the other video resource processing unit, thereby avoiding the processing caused by the failure of the first video resource processing unit. The problem of video data transmission failure.
  • each video resource processing unit in the at least one video resource processing unit may be connected to the exchange control unit by using a different interface on the switching control unit.
  • the number of the video resource processing units in the optical access device may be determined according to actual usage requirements, which is not specifically limited in the embodiment of the present invention.
  • the optical access device provided by the embodiment of the present invention may further include an interface unit 34 connected to the switching control unit 30.
  • the switching control unit 30 is specifically configured to send the second downlink data in the form of the digital electrical signal to the interface unit 34; the interface unit 34 is configured to receive the second downlink data in the form of a digital electrical signal sent by the switching control unit 30, and
  • the second downlink data in the form of the digital electrical signal can be converted to second downlink data in the form of a digital optical signal, and the second downstream data form of the digital optical signal can be transmitted to the remotely located PHY processing entity.
  • the downlink data in the process of processing and interacting with the downlink data by each unit (for example, the switching control unit, the video resource processing unit, and the MAC resource processing unit) in the optical access device, the downlink data is in the form of a digital electrical signal.
  • the interface unit in the optical access device may process the video resource processing unit and the MAC resource processing unit sent by the switching control unit in the optical access device.
  • the second downlink data in the form of the obtained digital electrical signal is converted into second downlink data in the form of a digital optical signal, thereby transmitting the second downlink data in the form of the digital optical signal to at least one PHY processing entity located at the far end.
  • the interface unit may include at least one of a point-to-multipoint passive optical network (PON) interface board and a point-to-point (P2P) interface board.
  • PON point-to-multipoint passive optical network
  • P2P point-to-point
  • the interface unit in the embodiment of the present invention may be selected according to actual use requirements, which is not limited by the embodiment of the present invention.
  • the uplink processing unit 31 and the switching control unit 30 shown in FIG. 4 may be two independent units.
  • the uplink processing unit 31 and the switching control unit 30 shown in FIG. 4 may be an integrated unit, that is, the function of the uplink processing unit 31 and the function of the switching control unit 30 may be integrated into one unit. Specifically, it can be selected according to actual use requirements, and is not specifically limited in the embodiment of the present invention.
  • each unit in the optical access device cannot directly interact, that is, in each unit.
  • Data cannot be directly transferred between any two units, so any two units in each unit transmit data through the exchange control unit.
  • the unit can send the data to the exchange control unit and forward it to the other unit by the exchange control unit.
  • the optical access device provided by the embodiment of the present invention is exemplarily described as an example of transmitting the uplink data in the optical access device.
  • FIG. 4 is a schematic structural diagram of an optical access device according to an embodiment of the present invention.
  • the optical access device includes an exchange control unit 30, and an uplink processing unit 31 and a MAC resource processing unit connected to the switching control unit. 32.
  • the switching control unit 30 is configured to receive uplink data (hereinafter referred to as first uplink data), and send the first uplink data to the MAC resource processing unit 32, and receive the digital electrical signal form sent by the MAC resource processing unit 32.
  • the second uplink data and the second uplink data in the form of the digital electrical signal are sent to the uplink processing unit 31.
  • the MAC resource processing unit 32 is configured to receive the first uplink data sent by the switching control unit 30, and process the first uplink data at the MAC layer to obtain second uplink data in the form of a digital electrical signal, and in the form of the digital electrical signal.
  • the second uplink data is sent to the exchange control unit 30.
  • the uplink processing unit 31 is configured to receive second uplink data in the form of a digital electrical signal sent by the switching control unit, and send the second uplink data in the form of the digital electrical signal to a device (such as a switch or a router) in the optical network or The second uplink data in the form of the digital electrical signal is sent to the device in the optical network as a digital optical signal.
  • the first uplink data may be request data, and the request data may include online authentication data of the terminal device and video request data of the terminal device.
  • the processing, by the MAC layer, the first uplink data may include: decapsulating the first uplink data.
  • the first uplink data may be decapsulated according to an Ethernet protocol to obtain second uplink data in the form of a digital electrical signal.
  • the uplink processing unit may directly send the second uplink data in the form of the received digital electrical signal to the device in the optical network.
  • the uplink processing unit may convert the second uplink data in the form of the digital electrical signal received by the uplink processing unit into the second uplink data in the form of a digital optical signal, and then send the second uplink data in the form of the digital optical signal to the optical Devices in the network.
  • the optical access device may further include an interface unit 34 connected to the switching control unit 30.
  • the interface unit 34 is configured to receive first uplink data in the form of a digital optical signal, and convert the first uplink data in the form of a digital optical signal into first uplink data in the form of a digital optical signal, and first in the form of the digital optical signal Uplink data is sent to the switching control unit 30.
  • the interface unit may receive uplink data in the form of a digital optical signal sent by a remote PHY processing entity in the optical access system (ie, the first uplink data in the form of the digital optical signal described above), and Converting the first uplink data in the form of a digital optical signal into uplink data in the form of a digital electrical signal, and transmitting the first uplink data in the form of the digital electrical signal to the switching control unit, thereby accessing each unit in the optical device (eg, switching control)
  • the unit and the MAC resource processing unit can process and interact with the first uplink data in the form of the digital electrical signal.
  • the switching control unit in the optical access device may receive the first uplink data, and send the first uplink data to the MAC resource processing unit.
  • the MAC resource processing unit receives the first uplink data sent by the switching control unit, and processes the first uplink data at the MAC layer to obtain second uplink data in the form of a digital electrical signal, and sends the second uplink data in the form of the digital electrical signal.
  • the switching control unit sends the second uplink data in the form of the digital electrical signal to the uplink processing unit.
  • the uplink processing unit may send the second uplink data in the form of the digital electrical signal to the device in the optical network or the digital signal form
  • the two uplink data is sent to the devices in the optical network in the form of digital optical signals.
  • the MAC resource processing unit can be set in the optical access device located at the central office, the uplink data in the optical layer processing optical network can be completed in the optical access device.
  • the power consumption of the uplink data is that the optical access device provided by the embodiment of the present invention can reduce the power consumption of the device on the remote side.
  • the optical access device (the optical access device shown in FIG. 4, FIG. 5 or FIG. 6) can be applied to the optical access system provided by the embodiment of the present invention.
  • the optical access system refer to the related description of the optical access system (ie, the optical access system shown in FIG. 2 or 3 above) in the foregoing embodiment.
  • the embodiment of the invention provides a method for processing data, which can be applied to an optical access device.
  • the method can be applied to the process in which the optical access device processes the downlink data and the optical access device processes the uplink data.
  • the optical access device can receive the downlink data, and process the downlink data, obtain downlink data in the form of a digital electrical signal, and downlink data in the form of the digital electrical signal. Downstream data in the form of a digital optical signal is converted, and downlink data in the form of the digital optical signal is separately transmitted to at least one PHY processing entity, thereby completing processing of the downlink data.
  • the optical access device can receive the uplink data, and process the uplink data to obtain the uplink number in the form of a digital electrical signal. And transmitting the uplink data in the form of the digital electrical signal to a device (such as a switch or a router) in the optical network; or transmitting the uplink data in the form of a digital electrical signal to the device in the optical network as a digital optical signal, thereby Complete the processing of the uplink data.
  • a device such as a switch or a router
  • the method for processing data provided by the embodiment of the present invention is exemplarily described by taking the downlink access data as an example.
  • an embodiment of the present invention provides a method for processing data, which may include S101-S104:
  • the optical access device receives the first downlink data.
  • the optical access device performs first processing on the first downlink data at the MAC layer, and obtains second downlink data in the form of a digital electrical signal.
  • the optical access device converts the second downlink data in the form of a digital electrical signal into the second downlink data in the form of a digital optical signal.
  • the optical access device sends the second downlink data in the form of a digital optical signal to the at least one PHY processing entity.
  • the optical access device may receive the first downlink data by using an uplink processing unit of the optical access device, and perform the first downlink of the MAC layer of the MAC resource processing unit in the optical access device.
  • the data is first processed to obtain second downlink data in the form of digital electrical signals, and the second downlink data in the form of digital electrical signals is converted into second downlink data in the form of digital optical signals in an interface unit of the optical access device.
  • the optical access device When the optical access device performs S101-S104, it can be specifically performed by each functional unit in the optical access device.
  • S101-S104 For the specific description of S101-S104, refer to the foregoing embodiment for the optical access device (as shown in FIG. 4).
  • the description of the downlink data is performed by the optical access device shown in FIG. 6 and is not described here.
  • the method for processing data provided by the embodiment of the present invention may further include S105:
  • the optical access device saves second downlink data in the form of a digital electrical signal.
  • the embodiment of the present invention may not limit the execution order of S105 and S103, that is, the embodiment of the present invention may first execute S105, and then execute S103; or S103 may be performed first, then S105 may be performed; and S105 and S103 may be simultaneously executed. .
  • the S105 For a detailed description of the S105, refer to the description of the second downlink data in the form of a digital electrical signal in the optical access device (specifically, the medium MAC resource processing unit of the optical access device) in the foregoing embodiment, and details are not described herein again. .
  • the foregoing S101-S104 may be specifically replaced by S201-S205:
  • the optical access device receives video data.
  • the optical access device performs second processing on the video data to obtain processed video data.
  • the optical access device performs the first processing on the processed video data at the MAC layer, and obtains the number. Second downlink data in the form of a word electrical signal.
  • the optical access device converts the second downlink data in the form of a digital electrical signal into the second downlink data in the form of a digital optical signal.
  • the optical access device sends the second downlink data in the form of a digital optical signal to the at least one PHY processing entity.
  • the video data processing unit of the optical access device may perform second processing on the video data to obtain processed video data.
  • the optical access device When the optical access device performs S201-S205, it can be specifically completed by each functional unit in the optical access device.
  • S201-S205 For the specific description of S201-S205, refer to the foregoing embodiment for the optical access device (as shown in Figure 4).
  • the description of the downlink data is performed by the optical access device shown in FIG. 6 and is not described here.
  • the method for processing data provided by the embodiment of the present invention may further include S206:
  • the optical access device saves the processed video data.
  • the embodiment of the present invention may not limit the execution order of S206 and S202, that is, the embodiment of the present invention may first execute S206 and then execute S202; or S202 may be performed first, then S206 may be performed; and S206 and S202 may be simultaneously executed. .
  • the optical access device may receive the first downlink data, and perform a first processing on the first downlink data in the MAC layer of the optical access device to obtain a digital electrical signal. Forming second downlink data, and converting second downlink data in the form of digital electrical signals into second downlink data in the form of digital optical signals, and transmitting second downlink data in the form of the digital optical signals to at least one PHY processing entity, respectively.
  • the downlink data ie, the first downlink data
  • the optical network can be processed in the MAC layer of the optical access device located at the central office (that is, the first processing described above).
  • the function of the MAC layer does not need to be integrated in the device on the remote side, so that the device on the remote side can reduce the work caused by processing the first downlink data at the MAC layer to a certain extent.
  • the optical access device provided by the embodiment of the present invention can reduce the power consumption of the device on the remote side.
  • the method for processing data provided by the embodiment of the present invention is exemplarily described below by taking an example of processing the uplink data by the optical access device.
  • an embodiment of the present invention provides a method for processing data, which may include S301-S304:
  • the optical access device receives the first uplink data.
  • the optical access device processes the first uplink data at the MAC layer to obtain second uplink data in the form of a digital electrical signal.
  • the optical access device sends the second uplink data in the form of a digital electrical signal to the device in the optical network, or sends the second uplink data in the form of the digital electrical signal to the optical network as a digital optical signal.
  • the device in the network sends the second uplink data in the form of a digital electrical signal to the device in the optical network, or sends the second uplink data in the form of the digital electrical signal to the optical network as a digital optical signal.
  • the foregoing optical access device performs S301-S303, which is performed by each functional unit in the optical access device.
  • S301-S303 refer to the foregoing embodiment for the optical access device.
  • the related description of transmitting uplink data is not described here.
  • the optical access device may receive the first uplink data, and process the first uplink data in the MAC layer of the optical access device to obtain second uplink data in the form of a digital electrical signal. And transmitting, by the optical access device, the second uplink data in the form of a digital electrical signal to the device in the optical network or transmitting the second uplink data in the form of the digital electrical signal to the device in the optical network.
  • the uplink data (that is, the first uplink data) in the optical network can be processed in the MAC layer in the optical access device located at the central office, the device on the remote side There is no need to integrate the functions of the MAC layer, so that the device on the remote side can reduce the power consumption of the first uplink data in the MAC layer to a certain extent, that is, the light provided by the embodiment of the present invention.
  • the access device can reduce the power consumption of the device on the far side.

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Abstract

本发明实施例提供一种处理数据的方法、光接入设备以及光接入系统，涉及光通信领域，能够降低远端一侧的设备的功耗。该光接入系统包括：光接入设备和与光接入设备连接的至少一个PHY处理实体。该光接入设备接收第一下行数据，并且在该光接入设备中的MAC层对该第一下行数据做第一处理，得到数字电信号形式的第二下行数据，以及将该数字电信号形式的第二下行数据以数字光信号形式分别发送给至少一个PHY处理实体；该至少一个PHY处理实体中的每个PHY处理实体接收光接入设备发送的数字光信号形式的第二下行数据，并且在PHY层对该数字光信号形式的第二下行数据做第二处理，得到模拟电信号形式的第三下行数据，以及将该模拟电信号形式的第三下行数据发送给CM。

Description

一种处理数据的方法、光接入设备以及光接入系统 技术领域
本发明实施例涉及光通信领域，尤其涉及一种处理数据的方法、光接入设备以及光接入系统。
背景技术
随着通信技术的不断发展，光通信技术的应用越来越广泛；相应的，传统通信系统中的网络接入设备也已逐渐发展为光通信系统中的光接入设备。
以光接入设备为光线路终端(Optical Line Terminal，OLT)为例，目前，在下行信号的传输过程中，位于局端(例如机房等)的OLT接收到下行信号后，首先处理该下行信号，然后再将处理后的该下行信号以光信号形式发送给位于远端(例如室外的固定杆或机箱等)的电缆调制解调器终端系统(Cable Modem Terminal Systems，CMTS)，CMTS接收到该光信号后，首先将该光信号转换为电信号，然后再在媒体接入控制(media access control，MAC)层处理和物理(Physical，PHY)层处理该电信号，并将处理后的该电信号发送给电缆调制解调器(Cable Modem，CM)，由CM对其接收的电信号解调后发送给终端设备，从而完成下行信号的传输。
然而，上述光通信系统中，由于CMTS位于远端，且该CMTS需要在MAC层和PHY层处理其接收的光信号，而在MAC层和PHY层处理光信号通常会消耗较大的功率，因此导致远端一侧的设备的功耗通常比较大。
发明内容
本申请提供一种处理数据的方法、光接入设备以及光接入系统，能够降低远端一侧的设备的功耗。
为达到上述目的，本申请采用如下技术方案：
第一方面，本申请提供一种光接入系统，该光接入系统可以包括：光接入设备和与该光接入设备连接的至少一个PHY处理实体。该光接入系统可以应用于传输下行数据的过程中。其中，光接入设备用于接收第一下行数据，并且在该光接入设备中的MAC层对该第一下行数据做第一处理，得到数字电信号形式的第二下行数据，以及将该数字电信号形式的第二下行数据以数字光信号形式分别发送给至少一个PHY处理实体；至少一个PHY处理实体中的每个PHY处理实体用于接收光接入设备发送的数字光信号形式的第二下行数据，并且在PHY层对数字光信号形式的第二下行数据做第二处理，得到模拟电信号形式的第三下行数据，以及将该模拟电信号形式的第三下行数据发送给CM。
本申请提供的光接入系统，由于可以在位于局端的光接入设备中的MAC层对第一下行数据做第一处理，在位于远端的PHY处理实体中的PHY层对数字光信号形式的第二下行数据做第二处理，因此远端一侧的设备中无需再 集成MAC层的功能，即远端一侧的设备无需对第一下行数据做第一处理，从而能够使得远端一侧的设备降低由于第一处理带来的功耗，即本申请提供的光接入系统能够降低远端一侧的设备的功耗。
在第一方面的第一种可选的实现方式中，本申请提供的光接入系统还可以包括分光器。上述光接入系统中的光接入设备与上述至少一个PHY处理实体中的每个PHY处理实体经分光器连接。该光接入设备具体用于通过该分光器将将数字光信号形式的上述第二下行数据分别发送给每个PHY处理实体。
本申请中，由于分光器可以将一个光接入设备输出的数字光信号形式的第二下行数据分别发送给多个PHY处理实体，由多个PHY处理实体将该多个PHY处理实体处理后的模拟电信号形式的第三下行数据发送给终端设备一侧的多个不同的CM，因此能够实现将下行数据发送给多个不同的CM，如此光接入系统中可以无需采用多个光接入设备，能够可以节省光接入系统的传输成本。
在第一方面的第二种可选的实现方式中，上述光接入设备可以包括交换控制单元以及与该交换控制单元连接的上联处理单元和MAC资源处理单元。其中，上联处理单元用于接收上述第一下行数据，并且将该第一下行数据发送给交换控制单元；交换控制单元用于接收上联处理单元发送的第一下行数据，并且将该第一下行数据发送给MAC资源处理单元，以及接收MAC资源处理单元发送的数字电信号形式的第二下行数据，并且将数字电信号形式的第二下行数据以数字光信号形式分别发送给至少一个PHY处理实体；MAC资源处理单元用于接收交换控制单元发送的第一下行数据，并且在MAC层对该第一下行数据做第一处理，得到数字电信号形式的第二下行数据，以及将数字电信号形式该第二下行数据发送给交换控制单元。
本申请中，由于可以在位于局端的光接入设备中设置MAC资源处理单元，从而可以在该光接入设备中完成在MAC层处理(即上述的第一处理)光网络中的下行数据(即第一下行数据)，因此在远端一侧的设备中无需再集成MAC层的功能，从而能够使得远端一侧的设备在一定程度上降低由于在MAC层处理第一下行数据带来的功耗，即本申请提供的光接入设备能够降低远端一侧的设备的功耗。
在第一方面的第三种可选的实现方式中，上述MAC资源处理单元还可以用于保存上述数字电信号形式的第二下行数据。
本申请中，上述MAC资源处理单元可以将数字电信号形式的第二下行数据保存在该MAC资源处理单元中(具体可以保存在该MAC资源处理单元的存储模块中)。如此，在第二下行数据发生错误(例如丢失)时，可以重新在该MAC资源处理单元中读取已保存的第二下行数据(数字电信号形式的第二下行数据)，从而能够避免由于第二下行数据发生错误而导致该第二下行数据传输失败的问题。
进一步的，上述光接入设备可以包括至少一个MAC资源处理单元，该至少一个MAC资源处理单元中的一个MAC资源处理单元(假设为第一MAC 资源处理单元)可以将其在MAC层处理得到的数字电信号形式的第二下行数据保存在该第一MAC资源处理单元中，该至少一个MAC资源处理单元中的其他MAC资源处理单元(即该至少一个MAC资源处理单元中除第一MAC资源处理单元之外的MAC资源处理单元)中的每个MAC资源处理单元也可以将其在MAC层处理得到的数字电信号形式的第二下行数据保存在该每个MAC资源处理单元中(具体可以保存在该每个MAC资源处理单元的存储模块中)。如此，在第一MAC资源处理单元发生故障而无法处理和传输数据时，可以将数据传输业务切换到其他的MAC资源处理单元中任意一个正常的MAC资源处理单元，从而能够避免由于第一MAC资源处理单元发生故障而导致第二下行数据传输失败的问题。
在第一方面的第四种可选的实现方式中，上述光接入设备还可以包括与上述交换控制单元连接的视频资源处理单元。当上述第一下行数据为视频数据时，上述上联处理单元具体用于接收该视频数据并将该视频数据发送给交换控制单元；上述交换控制单元具体用于接收上联处理单元发送的视频数据，并将该视频数据发送给视频资源处理单元，且接收视频资源处理单元发送的处理后的视频数据，并将该处理后的视频数据发送给MAC资源处理单元，以及接收MAC资源处理单元发送的数字电信号形式的第二下行数据；视频资源处理单元用于接收交换控制单元发送的视频数据，并且对该视频数据做第三处理，得到处理后的视频数据，以及将该处理后的视频数据发送给交换控制单元；MAC资源处理单元具体用于接收交换控制单元发送的处理后的视频数据，并且在MAC层对该处理后的视频数据做第一处理，得到数字电信号形式的第二下行数据，以及将数字电信号形式的第二下行数据发送给交换控制单元。
本申请中，上述视频资源处理单元对其接收到的视频数据做第三处理(以下均称为视频处理)，可以包括将视频数据重组和加密等。具体的，视频资源处理单元可以从其接收到的多类视频数据筛选出终端设备请求的视频数据(以下均称为请求视频数据)，即该多类视频数据中的至少一类视频数据，然后将该请求视频数据加密，如此可以防止视频数据在传输的过程中被篡改，保证视频数据安全地传输，并且对于请求该视频数据且已经对该视频数据付费的终端设备可以按照约定的解密算法，解密该视频数据，从而可以获取该视频数据。
在第一方面的第五种可选的实现方式中，上述视频资源处理单元还可以用于保存上述处理后的视频数据。
本申请中，上述视频资源处理单元可以将该视频资源处理单元处理后的视频数据保存在该视频资源处理单元中(具体可以保存在该视频资源处理单元的存储模块中)。如此，在该处理后的视频数据发生错误(例如丢失)时，可以重新在该视频资源处理单元中读取已保存的处理后的视频数据，从而能够避免由于处理后的视频数据发生错误而导致该处理后的视频数据传输失败的问题。
进一步的，上述光接入设备可以包括至少一个视频资源处理单元，该至少一个视频资源处理单元中的一个视频资源处理单元(假设为第一视频资源处理单元)可以将其处理得到的处理后的视频数据保存在该视频资源处理单元中，该至少一个视频资源处理单元中的其他视频资源处理单元(即该至少一个视频资源处理单元中除上述第一视频资源处理单元之外的视频资源处理单元)中的每个视频资源处理单元也可以将其处理得到的处理后的视频数据保存在该每个视频资源处理单元中(具体可以保存在该每个视频资源处理单元的存储模块中)，如此，在第一视频资源处理单元发生故障而无法处理和传输数据时，可以将视频数据传输业务切换到其他的视频资源处理单元中任意一个正常的视频资源处理单元，能够避免由于第一视频资源处理单元发生故障而导致该处理后的视频数据传输失败的问题。
在第一方面的第六种可选的实现方式中，上述光接入设备还可以包括与交换控制单元连接的接口单元。其中，该光接入设备中的交换控制单元具体用于将数字电信号形式的第二下行数据发送给接口单元；该接口单元用于接收交换控制单元发送的数字电信号形式的第二下行数据，并且将数字电信号形式的第二下行数据转换为数字光信号形式的第二下行数据，以及将数字光信号形式的第二下行数据发送给至少一个PHY处理实体。
本申请中，光接入设备内部的各个单元(例如交换控制单元、视频资源处理单元和MAC资源处理单元)处理和交互下行数据的过程中，该下行数据为数字电信号形式，当光接入设备中的各个单元完成下行数据的处理后，该光接入设备中的接口单元可以将该光接入设备中的交换控制单元发送的经视频资源处理单元和MAC资源处理单元处理后得到的数字电信号形式的第二下行数据转换为数字光信号形式的第二下行数据，从而将该数字光信号形式的第二下行数据发送给位于远端的至少一个PHY处理实体。
第二方面，本申请提供一种光接入系统，该光接入系统可以包括：光接入设备和与该光接入设备连接的至少一个PHY处理实体。该光接入系统可以应用于传输上行数据的过程中。其中，至少一个PHY处理实体中的每个PHY处理实体用于接收模拟电信号形式的第一上行数据，并且在PHY层处理该模拟电信号形式的第一上行数据，得到数字光信号形式的第二上行数据，以及将数字光信号形式的第二上行数据发送给光接入设备；光接入设备接收至少一个PHY处理单元发送的发送的该数字光信号形式的第二上行数据，并且在该光接入设备中将该数字光信号形式的第二上行数据转换为数字电信号形式的第二上行数据，以及在该光接入设备中的MAC层处理该数字电信号形式的第二上行数据，得到数字电信号形式的第三上行数据，并且将该数字电信号形式的第三上行数据发送给光网络中的设备或者将该数字电信号形式的第三上行数据以数字光信号形式发送给光网络中的设备。
本申请提供的光接入系统，由于可以在位于远端的PHY处理实体中的PHY层处理模拟电信号形式的第一上行数据，在位于局端的光接入设备中的MAC层处理数字电信号形式的第二上行数据，因此远端一侧的设备中无需再 集成MAC层的功能，从而能够使得远端一侧的设备在一定程度上降低由于在MAC层处理数字电信号形式的第二上行数据带来的功耗，即本申请提供的光接入系统能够降低远端一侧的设备的功耗。
在第二方面的第一种可选的实现方式中，本申请提供的光接入系统还可以包括分光器。上述光接入设备与至少一个PHY处理实体中的每个PHY处理实体经该分光器连接。该分光器用于集中每个PHY处理实体发送的数字光信号形式的第二上行数据，并且将该集中后的数字光信号形式的第二上行数据发送给光接入设备。
第三方面，本申请提供一种光接入设备，该光接入设备可以包括：交换控制单元以及与该交换控制单元连接的上联处理单元和MAC资源处理单元。该光接入设备可以应用于传输下行数据的过程中。其中，上联处理单元用于接收第一下行数据，并且将该第一下行数据发送给交换控制单元；交换控制单元用于接收上联处理单元发送的第一下行数据，并且将该第一下行数据发送给MAC资源处理单元，以及接收MAC资源处理单元发送的数字电信号形式的第二下行数据；MAC资源处理单元用于接收交换控制单元发送的第一下行数据，并且在MAC层对该第一下行数据做第一处理，得到数字电信号形式的第二下行数据，以及将该数字电信号形式的第二下行数据发送给交换控制单元。
本申请提供的光接入设备，由于可以在位于局端的光接入设备中设置MAC资源处理单元，从而可以在该光接入设备中完成在MAC层处理(即上述的第一处理)光网络中的下行数据(即第一下行数据)，因此在远端一侧的设备中无需再集成MAC层的功能，从而能够使得远端一侧的设备在一定程度上降低由于在MAC层处理第一下行数据带来的功耗，即本申请提供的光接入设备能够降低远端一侧的设备的功耗。
在第三方面的第一种可选的实现方式中，上述MAC资源处理单元还用于保存上述数字电信号形式的第二下行数据。
在第三方面的第二种可选的实现方式中，本申请提供的光接入设备还可以包括与交换控制单元连接的视频资源处理单元。当第一下行数据为视频数据时，上联处理单元具体用于接收该视频数据并将该视频数据发送给交换控制单元；交换控制单元具体用于接收上联处理单元发送的视频数据，并将该视频数据发送给视频资源处理单元，且接收视频资源处理单元发送的处理后的视频数据，并将该处理后的视频数据发送给MAC资源处理单元，以及接收MAC资源处理单元发送的数字电信号形式的第二下行数据；视频资源处理单元用于接收交换控制单元发送的视频数据，并且对该视频数据做第二处理，得到处理后的视频数据，以及将该处理后的视频数据发送给交换控制单元；MAC资源处理单元具体用于接收交换控制单元发送的处理后的视频数据，并且在MAC层对该处理后的视频数据做第一处理，得到数字电信号形式的第二下行数据，以及将该数字电信号形式的第二下行数据发送给交换控制单元。
本申请中，上述视频资源处理单元对其接收到的视频数据做第二处理可 以理解为：视频资源处理单元对该视频数据做视频处理。为了区分此处的第二处理(即视频处理)与上述第一方面的光接入系统中的PHY处理实体对其接收到的数字光信号形式的第二下行数据在其PHY层做的第二处理，可以将该视频处理称为第三处理(即上述第一方面的第四种可选的实现方式中的第三处理)。
在第三方面的第三种可选的实现方式中，上述视频资源处理单元还可以用于保存上述处理后的视频数据。
在第三方面的第四种可选的实现方式中，本申请提供的光接入设备还可以包括与交换控制单元连接的接口单元。其中，该光接入设备中的交换控制单元具体用于将上述数字电信号形式的第二下行数据发送给接口单元；该接口单元用于接收交换控制单元发送的数字电信号形式的第二下行数据，并且将该数字电信号形式的第二下行数据转换为数字光信号形式的第二下行数据，以及将该数字光信号的第二下行数据发送给PHY处理实体。
第三方面及其各种可选的实现方式的技术效果可以参见上述第一方面的第二种至第六种可选的实现方式的技术效果，此处不再赘述。
第四方面，本申请提供一种光接入设备，该光接入设备可以包括：交换控制单元以及该交换控制单元连接的上联处理单元和MAC资源处理单元。该光接入设备可以应用于传输上行数据的过程中。其中，交换控制单元用于接收第一上行数据，并将第一上行数据发送给MAC资源处理单元，且接收MAC资源处理单元发送的数字电信号形式的第二上行数据，以及将该数字电信号形式的第二上行数据发送给上联处理单元；MAC资源处理单元用于接收交换控制单元发送的数字电信号形式的第一上行数据，并且在MAC层处理该数字电信号形式的第一上行数据，得到数字电信号形式的第二上行数据，以及将该数字电信号形式的第二上行数据发送给交换控制单元；上联处理单元用于接收交换控制单元发送的数字电信号形式的第二上行数据，并且将该数字电信号形式的第二上行数据发送给光网络中的设备或者将该数字电信号形式的第二上行数据以数字光信号形式发送给光网络中的设备。
本申请提供的光接入设备，由于可以在位于局端的光接入设备中设置MAC资源处理单元，从而可以在该光接入设备中完成在MAC层处理光网络中的上行数据(即第一上行数据)，因此在远端一侧的设备中无需在集成MAC层的功能，从而能够使得远端一侧的设备在一定程度上降低由于在MAC层处理第一上行数据带来的功耗，即本申请提供的光接入设备能够降低远端一侧的设备的功耗。
在第四方面的第一种可选的实现方式中，本申请提供的光接入设备还包括与交换控制单元连接的接口单元。该接口单元用于接收数字光信号形式的第一上行数据，并且将该数字光信号形式的第一上行数据转换为数字电信号形式的第一上行数据，以及将该数字光信号形式的第一上行数据发送给交换控制单元。
第五方面，本申请提供一种处理数据的方法，该方法可以用于处理下行 数据，该方法可以包括：光接入设备接收接收第一下行数据；并在MAC层对该第一下行数据做第一处理，得到数字电信号形式的第二下行数据；且将数字电信号形式的第二下行数据转换为数字光信号形式的第二下行数据；以及向至少一个PHY处理实体分别发送该数字光信号形式的第二下行数据。
在第五方面的第一种可选的实现方式中，上述光接入设备在MAC层对第一下行数据做第一处理，得到数字电信号形式的第二下行数据之后，本申请提供的处理数据的方法还可以包括：光接入设备保存数字电信号形式的第二下行数据。
在第五方面的第二种可选的实现方式中，当上述第一下行数据为视频数据时，上述光接入设备在MAC层对第一下行数据做第一处理，得到数字电信号形式的第二下行数据之前，本申请提供的处理数据的方法还可以包括：光接入设备对视频数据做第二处理，得到处理后的视频数据；并且在MAC层对该第一下行数据做第一处理，得到数字电信号形式的第二下行数据具体可以包括：该光接入设备在MAC层对处理后的视频数据做第一处理，得到数字电信号形式的第二下行数据。
在第五方面的第三种可选的实现方式中，上述光接入设备对视频数据做第二处理，得到处理后的视频数据之后，本申请提供的处理数据的方法还可以包括：光接入设备保存处理后的视频数据。
第五方面及其各种可选的实现方式的技术效果可以参见第三方面及其各种可选的实现方式的技术效果，此处不再赘述。
第六方面，本申请提供一种处理数据的方法，该方法可以用于处理上行数据，该方法可以包括：光接入设备接收第一上行数据；并在MAC层处理该第一上行数据，得到数字电信号形式的第二上行数据，以及将数字电信号形式的第二上行数据发送给光网络中的设备或者将该数字电信号形式的第二上行数据以数字光信号形式发送给光网络中的设备。
第六方面的技术效果可以参见上述第四方面及其各种可选的实现方式的技术效果，此处不再赘述。
附图说明
图1为本发明实施例提供的通信系统的架构示意图；
图2为本发明实施例提供的光接入系统的架构示意图一；
图3为本发明实施例提供的光接入系统的架构示意图二；
图4为本发明实施例提供的光接入设备的结构示意图一；
图5为本发明实施例提供的光接入设备的结构示意图二；
图6为本发明实施例提供的光接入设备的结构示意图三；
图7为本发明实施例提供的处理数据的方法示意图一；
图8为本发明实施例提供的处理数据的方法示意图二；
图9为本发明实施例提供的处理数据的方法示意图三；
图10为本发明实施例提供的处理数据的方法示意图四。
具体实施方式
本文中术语“和/或”，仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。
本发明实施例的说明书和权利要求书中的术语“第一”和“第二”等是用于区别不同的对象，而不是用于描述对象的特定顺序。例如，第一下行数据和第二下行数据等是用于区别不同的下行数据，而不是用于描述下行数据的特定顺序。
在本发明实施例中，“示例性的”或者“例如”等词用于表示作例子、例证或说明。本发明实施例中被描述为“示例性的”或者“例如”的任何实施例或设计方案不应被解释为比其它实施例或设计方案更优选或更具优势。确切而言，使用“示例性的”或者“例如”等词旨在以具体方式呈现相关概念。
在本发明实施例的描述中，除非另有说明，“多个”的含义是指两个或两个以上。例如，多个PHY处理实体是指两个或两个以上的PHY处理实体。
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详细地描述。
以光接入设备为OLT为例，通常，在下行信号的传输过程中，位于局端的OLT接收到下行信号，并处理该下行信号，然后再将处理后的下行信号以光信号形式发送给位于远端的CMTS，CMTS接收到该光信号，将该光信号转换为电信号，并在MAC层处理和PHY层处理该电信号。由于CMTS位于远端，且该CMTS需要在MAC层和PHY层处理其接收的光信号，而在MAC层和PHY层处理光信号通常会消耗较大的功率，因此导致远端一侧的设备的功耗通常比较大。
为了解决上述问题，本发明实施例提供一种处理数据的方法、光接入设备以及光接入系统。在光网络中的设备向用户的终端设备发送下行数据的过程中，光接入系统中位于局端的光接入设备可以接收该下行数据(以下均称为第一下行数据)，并且在该光接入设备中的MAC层对该第一下行数据做第一处理，得到数字电信号形式的第二下行数据，以及将该数字电信号形式的第二下行数据以数字光信号形式分别发送给光接入系统中位于远端的至少一个PHY处理实体。该至少一个PHY处理实体中的每一个PHY处理实体接收光接入设备发送的第二下行数据，并且在PHY层对该第二下行数据做第二处理，得到第三下行数据，以及将该第三下行数据发送给CM，由CM对其接收的第三下行数据解调后发送给终端设备，从而实现终端设备接收光网络发送的第一下行数据。与现有技术相比，本发明实施例提供的光接入系统中，由于可以在位于局端的光接入设备中的MAC层对第一下行数据做第一处理，在位于远端的PHY处理实体中的PHY层对第二下行数据做第二处理，因此远端一侧的设备中无需再集成MAC层的功能，即远端一侧的设备无需对第一下行数据做第一处理，从而本发明实施例能够使得远端一侧的设备降低由于第一处理带来的功耗，即本发明实施例提供的光接入设备和光接入系统能够降低远端一侧的设备的功耗。
本发明实施例提供的处理数据的方法可以应用于光接入设备，该光接入设备可以应用于光接入系统中，该光接入系统可以应用于采用光纤通信的通信系统中。参考图1，为本发明实施例提供的一种通信系统的架构示意图。如图1所示，该通信系统包括光接入设备10、至少一个PHY处理实体(假设图1所示的该通信系统中有两个PHY处理实体，分别为PHY处理实体11a和PHY处理实体11b)和至少一个CM(假设图1所示的该通信系统中有三个CM，分别为CM 12a、CM 12b和CM 12c)。其中，光接入设备10与至少一个PHY处理实体中的每个PHY处理实体(即PHY处理实体11a和PHY处理实体11b)连接，该每个PHY处理实体与至少一个CM连接。示例性的，如图1所示，PHY处理实体11a可以与CM 12a和CM 12b连接，PHY处理实体11b可以与CM 12c连接。光接入设备10可以将其接收到的下行数据以数字光信号形式发送给至少一个PHY处理实体中的每个PHY处理实体，然后每个PHY处理实体可以将其接收到的数字光信号形式的下行数据转为数字电信号形式的下行数据，再将该数字电信号形式的下行数据转换为模拟电信号形式的下行数据，进而每个PHY处理实体可以将该模拟电信号形式的下行数据发送给与其连接的至少一个CM。
需要说明的是，本发明实施例中，上述PHY处理实体可以为集成有PHY处理功能的设备或实体，也可以为独立的PHY处理设备。并且上述通信系统中，PHY处理实体的个数可以根据实际光网络的部署需求设定，本发明实施例不作具体限定。即上述图1所示的通信系统中的PHY处理实体的数量是为了对本发明实施例提供的通信系统进行示例性的说明，其并不对本发明实施例提供的通信系统形成任何限定。
本发明实施例中，上述如图1所示的通信系统的架构示意图中，光接入设备10与至少一个PHY处理实体可以称为光接入系统，该光接入系统可以传输上行数据和下行数据。具体的，在传输下行数据的过程中，光接入系统可以接收光网络中的设备(例如交换机或路由器)发送的下行数据(例如视频数据等)，并处理该下行数据，得到数字光信号形式的下行数据，且将该数字光信号形式的下行数据转换为数字电信号形式的下行数据，再将数字电信号形式的下行数据转换为模拟电信号形式的下行数据之后发送给终端设备一侧的CM，由CM将该模拟电信号形式的下行数据发送给终端设备，从而实现下行数据的传输。在传输上行数据的过程中，光接入系统可以接收终端设备一侧的CM发送的模拟电信号形式的上行数据(例如终端设备的请求数据)，并将该模拟电信号形式的上行数据转换为数字电信号形式的上行数据，且将该数字电信号形式的上行数据转换为数字光信号形式的上行数据，然后再处理该数字光信号形式的上行数据，以及将处理后的该数字光信号形式的上行数据发送给光网络中的设备或者将处理后的该数字光信号形式的上行数据以数字电信号形式发送给光网络中的设备，从而实现上行数据的传输。下面分别以传输下行数据和上行数据为例，对本发明实施例提供的光接入系统进行详细地说明。
首先，以在光接入系统中传输下行数据为例，对本发明实施例提供的光接入系统进行示例性的说明。
结合图1，如图2所示，本发明实施例提供一种光接入系统的架构示意图，该光接入系统包括光接入设备20和与该光接入设备20连接的至少一个PHY处理实体21。
其中，该光接入设备20用于接收光网络中的设备(例如交换机或路由器)发送的下行数据(以下简称为第一下行数据)，并且在该光接入设备20中的MAC层对该第一下行数据做第一处理，得到数字电信号形式的第二下行数据，以及将该数字电信号形式的第二下行数据以数字光信号形式分别发送给至少一个PHY处理实体(具体可以发送给至少一个PHY处理实体中的每个PHY处理实体)。
如图2所示的至少一个PHY处理实体21中的每个PHY处理实体用于接收上述光接入设备20发送的数字光信号形式的第二下行数据，并且在其PHY层对该数字光信号形式的第二下行数据做第二处理，得到模拟电信号形式的第三下行数据，以及将该模拟电信号形式的第三下行数据发送给CM。
可选的，本发明实施例中，上述第一处理可以包括：对下行数据分包和封装。
示例性的，本发明实施例中，上述在光接入设备中的MAC层对第一下行数据做第一处理，可以包括：光接入设备对其接收到的第一下行数据分包，然后封装分包后的第一下行数据，得到数字电信号形式的第二下行数据。
需要说明的是，本发明实施例中，光接入设备接收第一下行数据具体为该光接入设备依次接收光网络中的设备发送的数据包，以接收第一下行数据，示例性的，以第一下行数据为一个数据包(以下简称为第一数据包)为例来说明上述第一处理。
具体的，上述光接入设备接收到第一下行数据后，在其MAC层处理并传输该第一下行数据的过程中，由于MAC层能够处理和传输的数据包的长度是有限的，因此当第一下行数据中的数据包的长度超过MAC层能够处理的数据包的最大长度时，光接入设备可以对该第一下行数据分包，即将第一数据包分为多个长度较小的数据包(以下简称为子数据包)，进而通过在MAC层处理和传输多个子数据包，实现第一下行数据在MAC层顺利地处理和传输。
进一步的，在MAC层传输第一下行数据的过程中，如果发生传输错误(例如丢包)，由于本发明实施例可以重新发送发生传输错误的子数据包，而无需重新发送该子数据包对应的未分包之前的数据包，因此可以节省重新发送发生传输错误的数据包的开销。
示例性的，以上述第一数据包为例，假设该第一数据包的净荷的长度为2000字节(byte)，MAC层可以处理和传输的数据包的最大长度1460byte，则可以对该第一数据包分包，即将第一数据包分为多个子数据包，例如，可以将第一数据包分为长度为1460byte的子数据包(可以称为第一子数据包)和长度为540byte的子数据包(可以成为第二子数据包)，并且按照第一数据 包的包头打包每个分包后的子数据包，如此接收该多个子数据包的功能单元(例如本发明实施例中的交换控制单元)可以获知该多个子数据包为第一数据包中的子数据包。
本发明实施例中，上述光接入设备对第一下行数据分包后，可以封装上述分包后的多个子数据包，得到封装后的下行数据，即得到数字电信号形式的第二下行数据。示例性的，该光接入设备可以按照以太网协议，将该分包后的多个子数据包封装为以太网数据。
本发明实施例中，上述光接入设备封装分包后的多个子数据包，得到数字电信号形式的第二下行数据之后，该光接入设备还可以为数字电信号形式的第二下行数据分配发送该数字电信号形式的第二下行数据的信道和为该数字电信号形式的第二下行数据分配传输该数字电信号形式的第二下行数据的带宽。例如光接入设备可以为数字电信号形式的第二下行数据分配信道质量较好的下行信道和为该数字电信号形式的第二下行数据分配能够满足该数字电信号形式的第二下行数据的传输速率需求的带宽，从而使得数字电信号形式的第二下行数据在下行信道中顺利地传输。
需要说明的是，本发明实施例提供的光接入系统中可以包括至少一个光接入设备，光接入设备的数量可以根据实际使用需求确定，本发明实施例不作具体限定。
本发明实施例中，光接入设备可以将该数字电信号形式的第二下行数据以数字光信号形式分别发送给至少一个PHY处理实体。具体的，可以由光接入设备将数字电信号形式的第二下行数据转换为数字光信号，然后再发送给至少一个PHY处理实体。
需要说明的是，本发明实施例中，可以由光接入设备中的接口单元将数字电信号形式的第二下行数据转换为数字光信号形式的第二下行数据，也可以由具有信号形式转换功能的其他功能单元将数字电信号形式的第二下行数据转换为数字光信号形式的第二下行数据，本发明实施例不作限定。
可选的，本发明实施例中，上述第二处理可以包括：将数字光信号形式的下行数据转换为数字电信号形式的下行数据，并且将数字电信号形式的下行数据转换为模拟电信号形式的下行数据。
示例性的，本发明实施例中，上述至少一个PHY处理实体中的每个PHY处理实体在其PHY层对数字电信号形式的第二下行数据做第二处理，可以包括：每个PHY处理实体将其接收到的数字光信号形式的第二下行数据转换为数字电信号形式的下行数据，并且将该数字电信号形式的下行数据转换为模拟电信号形式的下行数据，即上述模拟电信号形式的第三下行数据。
需要说明的是，本发明实施例中，上述光接入系统中，在传输下行数据的过程中，该光接入系统(具体为该光接入系统中的PHY处理实体)可以将其输出的模拟电信号形式的下行数据(即上述模拟电信号形式的第三下行数据)发送给终端设备一侧的CM。为了解决模拟电信号形式的下行数据在传输过程中的线性失真问题，可以由PHY处理实体(通常PHY处理实体位于终 端设备一侧的CM附近)将数字光信号形式的下行数据转换为数字电信号形式的下行数据后，再将该数字电信号形式的下行数据转换为模拟电信号形式的下行数据。由于数字信号在传输过程中抗干扰能力强，即数字信号的稳定性比较好，因此以数字信号形式传输下行数据可以降低下行数据在传输过程中的线性失真。
本发明实施例提供的光接入系统，该光接入系统中位于局端的光接入设备可以接收第一下行数据，并且在该光接入设备中的MAC层对该第一下行数据做第一处理，得到数字电信号形式的第二下行数据，以及将该数字电信号形式的第二下行数据以数字光信号形式分别发送给光接入系统中位于远端的至少一个PHY处理实体。该至少一个PHY处理实体中的每一个PHY处理实体接收光接入设备发送的数字光信号形式的第二下行数据，并且在PHY层对该数字光信号形式的第二下行数据做第二处理，得到模拟电信号形式的第三下行数据，以及将该模拟电信号形式的第三下行数据发送给CM，由CM对其接收的模拟电信号形式的第三下行数据解调后发送给终端设备，从而实现终端设备接收光网络发送的第一下行数据。与现有技术相比，本发明实施例提供的光接入系统中，由于可以在位于局端的光接入设备中的MAC层对第一下行数据做第一处理，在位于远端的PHY处理实体中的PHY层对数字光信号形式的第二下行数据做第二处理，因此远端一侧的设备中无需再集成MAC层的功能，即远端一侧的设备无需对第一下行数据做第一处理，从而本发明实施例能够使得远端一侧的设备降低由于第一处理带来的功耗，即本发明实施例提供的光接入系统能够降低远端一侧的设备的功耗。
本发明实施例中，光接入系统中的PHY处理实体有多个时，由于可以将光接入设备中的MAC层处理后的数字电信号形式的第二下行数据以数字光信号形式分别发送给该多个PHY处理实体中的每一个PHY处理实体，从而无需在远端一侧的设备上集成多个MAC层的功能(通常，在远端一侧的设备上，MAC功能实体与PHY处理实体成对存在，即一个PHY处理实体对应一个MAC功能实体)，因此可以在一定程度上可以降低光接入系统传输下行数据所花费的成本。
可选的，结合图2，如图3所示，本发明实施例提供的光接入系统还可以包括分光器22。光接入设备20与至少一个PHY处理实体21中的每个PHY处理实体经该分光器22连接，该光接入系统中的光接入设备可以通过该分光器22将数字光信号形式的第二下行数据分发给每个PHY处理实体。
本发明实施例中，分光器可以用于分发下行数据。该分光器可以包括至少一个上行光接口和多个下行光接口。该分光器可以从该分光器的一个上行光接口接收上一级设备(例如光接入设备(例如OLT))输出的数字光信号形式的下行数据(例如上述的数字光信号形式的第二下行数据)，并将该数字光信号形式的下行数据分配到该分光器的多个下行光接口，进而通过该多个下行光接口将该数字光信号形式的下行数据发送给与该分光器连接的多个下一级设备。
需要说明的是，本发明实施例中，上述分光器的下行光接口的数量通常大于或者等于与该分光器的下行光接口连接的PHY处理实体的数量。
示例性的，本发明实施例中，上述如图3所示的分光器22可以将数字光信号形式的第二下行数据分配到分光器22的N(N>＝1)个下行光接口，该N个下行光接口中的每一个光接口分别与至少一个PHY处理实体中的一个PHY处理实体连接，进而分光器可以通过该分光器的N个下行光接口将该数字光信号形式的第二下行数据发送给至少一个PHY处理实体21。其中，光接入系统中PHY处理实体的数量为N个。
本发明实施例中，由于光接入设备可以通过分光器将该光接入设备输出的数字光信号形式的第二下行数据发送给多个PHY处理实体，由多个PHY处理实体将各自处理后的模拟电信号形式的第三下行数据发送给终端设备一侧的不同的CM，因此能够实现将下行数据发送给多个不同的CM，如此光接入系统中可以无需采用多个光接入设备，能够可以节省光接入系统的传输成本。
需要说明的是，对于本发明实施例提供的光接入系统中的光接入设备的结构、光接入设备处理和传输下行数据的过程将在下述实施例中进行详细地描述。
下面再以在光接入系统中传输上行数据为例，对本发明实施例提供的光接入系统进行示例性的说明。
如图2所示，为本发明实施例提供一种光接入系统的架构示意图，该光接入系统包括光接入设备20和与该光接入设备20连接的至少一个PHY处理实体21。
其中，至少一个PHY处理实体21中的每个PHY处理实体用于接收与该PHY处理实体连接的至少一个CM发送的模拟电信号形式的上行数据(以下均称为模拟电信号形式的第一上行数据)，并且每个PHY处理实体在PHY层处理该模拟电信号形式的第一上行数据，得到数字光信号形式的第二上行数据，以及将该数字光信号形式的第二上行数据发送给光接入设备20。
如图2所示的光接入设备20用于接收至少一个PHY处理单元发送的发送的数字光信号形式的第二上行数据，并且可以在该光接入设备20中将该数字光信号形式的第二上行数据转换为数字电信号形式的第二上行数据，以及在该光接入设备中的MAC层处理该数字电信号形式的第二上行数据，得到数字电信号形式的第三上行数据，并且该光接入设备将该数字电信号形式的第三上行数据发送给光网络中的设备(例如交换机或路由器)或者将该数字电信号形式的第三上行数据以数字光信号形式发送给光网络中的设备，从而可以实现上行数据的传输。
可选的，本发明实施例中，上述至少一个PHY处理实体处理模拟电信号形式的第一上行数据可以包括：将该模拟电信号形式的第一上行数据转换为数字电信号形式的上行数据，并且将数字电信号形式的上行数据转换为数字光信号形式的上行数据。
示例性的，本发明实施例中，上述至少一个PHY处理实体接收到的模拟电信号形式的第一上行数据可以为请求数据，该请求数据可以包括终端设备的上网认证数据和终端设备的视频请求数据，上述至少一个PHY处理实体中的每个PHY处理实体接收到与该PHY处理实体连接的至少一个CM发送的模拟电信号形式的第一上行数据后，可以在其PHY层将该模拟电信号形式的第一上行数据转换为数字电信号形式的上行数据，然后将该数字电信号形式的上行数据转换为数字光信号形式的上行数据，得到数字光信号形式的第二上行数据，再将该数字光信号形式的第二上行数据发送给光接入设备。
可选的，本发明实施例中，上述光接入设备在其MAC层处理数字电信号形式的第二上行数据可以包括：解封装该数字电信号形式的第二上行数据。示例性的，上述光接入设备可以在其MAC层解封装该数字电信号形式的第二上行数据，例如，可以按照以太网协议解封装该数字电信号形式的第二上行数据，得到数字电信号形式的第三上行数据。
本发明实施例提供的光接入系统，该光接入系统中的至少一个PHY处理实体中的每个PHY处理实体可以接收与该PHY处理实体连接的至少一个CM发送的模拟电信号形式的上行数据(例如上述的模拟电信号形式的第一上行数据)，并且在其PHY层处理该模拟电信号形式的第一上行数据，得到数字光信号形式的第二上行数据，以及将该数字光信号形式的第二上行数据发送给光接入设备。光接入设备接收至少一个PHY处理实体发送的数字光信号形式的第二上行数据，并且将该数字光信号形式的第二上行数据转换为数字电信号形式的第二上行数据，以及在其MAC层处理该数字电信号形式的第二上行数据，得到数字电信号形式的第三上行数据，以及将该数字电信号形式的第三上行数据发送给光网络中的设备或者将该数字电信号形式的第三上行数据以数字光信号形式发送给光网络中的设备。与现有技术相比，本发明实施例提供的光接入系统中，由于可以在位于远端的PHY处理实体中的PHY层处理模拟电信号形式的第一上行数据，在位于局端的光接入设备中的MAC层处理数字电信号形式的第二上行数据，因此远端一侧的设备中无需再集成MAC层的功能，从而本发明实施例能够使得远端一侧的设备在一定程度上降低由于在MAC层处理数字电信号形式的第二上行数据带来的功耗，即本发明实施例提供的光接入系统能够降低远端一侧的设备的功耗。
本发明实施例中，光接入系统中的PHY处理实体有多个时，由于可以在该光接入系统中的光接入设备中的MAC层处理终端设备经多个CM和多个PHY处理实体发送的第一上行数据，从而无需在远端一侧的设备上集成多个MAC层的功能(通常，在远端一侧的设备上，MAC功能实体与PHY处理实体成对存在，即一个PHY处理实体对应一个MAC功能实体)，因此可以在一定程度上可以降低光接入系统传输上行数据所花费的成本。
可选的，如图3所示，光接入系统还可以包括分光器22。光接入设备20与至少一个PHY处理实体21中的每个PHY处理实体经该分光器22连接，该分光器22用于集中每个PHY处理实体发送的数字光信号形式的第二上行 数据，并且将集中后的数字光信号形式的第二上行数据发送给光接入设备。
本发明实施例中，分光器除了可以用于分发下行数据之外，还可以用于集中上行数据。该分光器可以包括至少一个上行光接口和多个下行光接口。该分光器可以通过该分光器的多个下行光接口接收与该分光器连接的多个下一级设备发送的数字光信号形式的上行数据，并将该多个数字光信号形式的上行数据集中到该分光器的一个上行光接口，进而将集中后的数字光信号形式的上行数据发送给与该分光器连接的上一级设备。
示例性的，本发明实施例中，上述如图3所示的分光器22的N(N>＝1)个下行光接口中的每个光接口分别与至少一个PHY处理实体中的一个PHY处理实体连接，进而分光器可以通过该分光器的N个下行光接口接收每个PHY处理实体发送的数字光信号形式的第二上行数据，并将每个PHY处理实体发送的数字光信号形式的第二上行数据集中在一起，然后将该数字光信号形式的第二上行数据发送给光接入设备20，其中，光接入系统中PHY处理实体的数量为N个。
对于分光器的其他描述具体可以参见上述实施例中(在光接入系统中传输下行数据的过程中)对于分光器的相关描述，此处不再赘述。
需要说明的是，本发明实施例中，对于在传输上行数据的过程中对光接入系统的其他描述，可以参见上述在传输下行数据的过程中对光接入系统的相关描述，此处不再赘述。
本发明实施例提供一种光接入设备，该光接入设备(通常，光接入设备位于局端)可以传输上行数据和下行数据。具体的，在传输下行数据的过程中，光接入设备可以接收光网络中的设备发送的下行数据(例如视频数据等)，并处理该下行数据，得到数字光信号形式的下行数据，且将该数字光信号形式的下行数据发送给位于远端的PHY处理实体，并经PHY处理实体将该数字光信号形式的下行数据转化为模拟电信号形式的下行数据后，通过CM将该模拟电信号形式的下行数据发送给终端设备，从而实现下行数据的传输。在传输上行数据的过程中，光接入设备可以接收终端设备经CM和PHY处理实体发送的上行数据(例如终端设备的请求数据，该上行数据为数字光信号形式)，并将该数字光信号形式的上行数据转换为数字电信号形式的上行数据，且处理该数字电信号形式的上行数据，以及数字电信号形式的上行数据发送给光网络中的设备或者将该数字电信号形式的上行数据以数字光信号形式发送给光网络中的设备，从而实现上行数据的传输。下面分别以传输下行数据和上行数据为例，对本发明实施例提供的光接入设备进行详细地说明。
首先，以在光接入设备中传输下行数据为例，对本发明实施例提供的光接入设备进行示例性的说明。
如图4所示，为本发明实施例提供的一种光接入设备的结构示意图，该光接入设备包括交换控制单元30以及与该交换控制单元30连接的上联处理单元31和MAC资源处理单元32。
其中，上联处理单元31用于接收光网络中的设备(例如交换机或路由器)发送的下行数据(例如第一下行数据)，并且将该第一下行数据发送给交换控制单元30。
交换控制单元30用于接收上联处理单元31发送的第一下行数据，并且将该第一下行数据发送给MAC资源处理单元32，以及接收该MAC资源处理单元32发送的数字电信号形式的第二下行数据。
MAC资源处理单元32用于接收上述交换控制单元30发送的第一下行数据，并且在MAC层对第一下行数据做第一处理，即在MAC层处理该第一下行数据，得到数字电信号形式的第二下行数据，以及将该数字电信号形式的第二下行数据发送给交换控制单元30。
本发明实施例中，如图4所示的上联处理单元31可以为与光网络中的设备(例如交换机或路由器)连接的接口板。该上联处理单元31可以接收光网络中的交换机或路由器发送的第一下行数据，该第一下行数据可以为数字电信号形式的下行数据，也可以为数字光信号形式的下行数据。由于在光接入设备的各个单元中处理第一下行数据的过程中，光接入设备的各个单元可以处理数字电信号形式的下行数据，不能处理数字光信号形式的下行数据，因此，当上述上联处理单元31接收到的第一下行数据为数字光信号形式的下行数据时，该上联处理单元31可以将该数字光信号形式的第一下行数据转换为数字电信号形式的第一下行数据，然后再将转换后的数字电信号形式的第一下行数据发送给交换控制单元30。
可选的，本发明实施例中，上述上联处理单元还可以用于将转换其接收到的下行数据(该下行数据为视频数据)的码率，即上联处理单元可以将其接收到的下行数据的码率转换为光接入设备要求的码率。示例性的，上联处理单元接收到的下行数据的码率为10.3125千兆比特每秒(Gbps)，而光接入设备要求的码率为12.5Gbps，则该上联处理单元可以将该下行数据的码率转换为12.5Gbps。
可选的，本发明实施例中，上述上联处理单元还可以用于转换其接收到的下行数据(该下行数据为电信号形式)的电平的编码格式，即上联处理单元可以将其接收到的下行数据的电平的编码格式转换为光接入设备可以处理的电平的编码格式，例如可以即将其接收到的下行数据由千兆以太网(Gigabit Ethernet，GE)编码格式转换为不归零(Non Return Zero，NRZ)编码格式。
本发明实施例中，上述交换控制单元30可以用于交换光接入设备中的各个单元之间的数据，例如，该交换控制单元30可以接收上联处理单元31发送的第一下行数据，并将该第一下行数据发送给MAC资源处理单元32，然后再接收MAC资源处理单元32处理后的数字电信号形式的第二下行数据，并将该数字电信号形式的第二下行数据发送给该光接入设备中的接口单元。
可选的，本发明实施例中，上述交换控制单元30还可以用于控制光接入设备中的其他单元(例如上联处理单元31和MAC资源处理单元32等)，具体可以为：交换控制单元30可以监控光接入设备的各个单元的状态(例如， 各个单元之间的连接是否异常，各个单元的运行是否正常)，并且根据光接入设备的各个单元的状态分别对各个单元进行控制和管理。
本发明实施例中，上述MAC资源处理单元在MAC层对第一下行数据做第一处理可以包括：对第一下行数据分包和封装。
对于MAC资源处理单元在MAC层对第一下行数据做第一处理具体可以参见上述光接入系统中光接入设备在其MAC层对第一下行数据做第一处理的相关描述，此处不再赘述。
可选的，本发明实施例中，上述光接入设备中的MAC资源处理单元的数量可以为至少一个。示例性的，以一个MAC资源处理单元(以下简称为第一MAC资源处理单元，例如可以为上述如图4所示的MAC资源处理单元32)为例，该第一MAC资源处理单元在MAC层对第一下行数据做第一处理，得到数字电信号形式的第二下行数据后，该第一MAC资源处理单元可以将该数字电信号形式的第二下行数据发送给与该第一MAC资源处理单元连接的交换控制单元，该第一MAC资源处理单元还可以将该数字电信号形式的第二下行数据保存在该第一MAC资源处理单元中(具体可以保存在该第一MAC资源处理单元的存储模块中)。如此，在该第二下行数据发生错误(例如丢失)时，可以重新在该第一MAC资源处理单元中读取已保存的第二下行数据(数字电信号形式的第二下行数据)，从而能够避免由于第二下行数据发生错误而导致该第二下行数据传输失败的问题。
进一步的，上述至少一个MAC资源处理单元中的每个MAC资源处理单元均与交换控制单元连接。并且每个MAC资源处理单元与上述如图4所示的MAC资源处理单元32的具有相同的功能，对于该至少一个MAC资源处理单元的具体描述，可以参见上述对于上述如图4所示MAC资源处理单元32的相关描述。示例性的，该至少一个MAC资源处理单元中的一个MAC资源处理单元(例如上述的第一MAC资源处理单元)可以将其在MAC层处理得到的数字电信号形式的第二下行数据保存在该第一MAC资源处理单元中，该至少一个MAC资源处理单元中的其他MAC资源处理单元(即该至少一个MAC资源处理单元中除第一MAC资源处理单元之外的MAC资源处理单元)中的每个MAC资源处理单元也可以将其在MAC层处理得到的数字电信号形式的第二下行数据保存在该每个MAC资源处理单元中(具体可以保存在该每个MAC资源处理单元的存储模块中)。如此，在第一MAC资源处理单元发生故障而无法处理和传输数据时，可以将数据传输业务切换到其他的MAC资源处理单元中任意一个正常的MAC资源处理单元，从而能够避免由于第一MAC资源处理单元发生故障而导致第二下行数据传输失败的问题。
可以理解的是，本发明实施例中，上述至少一个MAC资源处理单元中的每个MAC资源处理单元可以与通过交换控制单元上的不同接口与该交换控制单元连接。
需要说明的是，本发明实施例中，上述光接入设备中的MAC资源处理单元的数量可以根据实际使用需求确定，本发明实施例不作具体限定。
本发明实施例提供的光接入设备，该光接入设备中的上联处理单元可以接收第一下行数据，并将该第一下行数据发送给交换控制单元。交换控制单元接收到上联处理单元发送的第一下行数据之后，将该第一下行数据发送给MAC资源处理单元。MAC资源处理单元接收交换控制的发送的第一下行数据，并且在MAC层对第一下行数据做第一处理，得到数字电信号形式的第二下行数据，以及将该数字电信号形式的第二下行数据发送给交换控制单元。与现有技术相比，本发明实施例中，由于可以在位于局端的光接入设备中设置MAC资源处理单元，从而可以在该光接入设备中完成在MAC层处理(即上述的第一处理)光网络中的下行数据(即第一下行数据)，因此在远端一侧的设备中无需再集成MAC层的功能，从而本发明实施例能够使得远端一侧的设备在一定程度上降低由于在MAC层处理第一下行数据带来的功耗，即本发明实施例提供的光接入设备能够降低远端一侧的设备的功耗。
可选的，结合图4，如图5所示，本发明实施例提供的光接入设备还可以包括与交换控制单元30连接的视频资源处理单元33。当光网络中的设备发送的下行数据(例如第一下行数据)为视频数据时，该视频资源处理单元33用于处理该视频数据。
其中，如图5所示的上联处理单元31具体用于接收到光网络中的设备发送的视频数据(即第一下行数据)，并且将该视频数据发送给交换控制单元30。
交换控制单元30具体用于接收上联处理单元31发送的视频数据，并将该视频数据发送给视频资源处理单元33，且接收视频资源处理单元33发送的经该视频资源处理单元33处理后的视频数据，并将该处理后的视频数据发送给MAC资源处理单元32，以及接收MAC资源处理单元32发送的数字电信号形式的第二下行数据(即MAC资源处理单元32在MAC层处理后的数字电信号形式的下行数据)。
视频资源处理单元33用于接收上述交换控制单元发送的视频数据，并且可以对该视频数据做第二处理，以及将该处理后的视频数据发送给交换控制单元30。
MAC资源处理单元32具体用于接收上述交换控制单元30发送的由视频资源处理单元33处理后的视频数据，并且在MAC层对该处理后的视频数据做第一处理，得到数字电信号形式的第二下行数据，以及将该数字电信号形式的第二下行数据发送给交换控制单元30。
需要说明的是，本实施例(如图5所示的光接入设备)中，视频资源处理单元对其接收到的视频数据做第二处理可以理解为：视频资源处理单元对该视频数据做视频处理。为了区分此处的第二处理(即视频处理)与上述实施例(如图2或图3所示的光接入系统)中光接入系统中的PHY处理实体对其接收到的数字光信号形式的第二下行数据在其PHY层做的第二处理，可以将此处的第二处理，即视频处理称为第三处理，下述实施例均以视频处理或者第三处理表示视频资源处理单元中的第二处理。
本发明实施例中，对于上联处理单元的具体描述可以参见上述实施例中 对于上联处理单元的相关描述，此处不再赘述。
对于交换控制单元的具体描述可以参见上述实施例中对于交换控制单元单元的相关描述，此处不再赘述。
可选的，本发明实施例中，上述视频处理可以包括：将视频数据重组和加密等。
示例性的，本发明实施例中，上述视频资源处理单元对其接收到的视频数据做视频处理，可以包括将视频数据重组和加密等。通常，视频资源处理单元接收到的视频数据可以包括多类视频数据，视频资源处理单元可以筛选该多类视频数据中的至少一类视频数据(即终端设备请求的视频数据，以下均称为请求视频数据)，然后将该请求视频数据加密，得到加密后的请求视频数据，即上述的处理后的视频数据，再将该处理后的视频数据发送给交换控制单元。
示例性的，假设视频资源处理单元接收到的视频数据包括某个电视台的频段1至频段12上提供的视频数据，而终端设备(该终端设备可以有多个)请求的视频数据包括该电视台的频段1、频段3、频段5和频段8上提供的视频数据，则视频资源处理单元可以从其接收到的频段1至频段12上提供的视频数据中筛选出该终端设备所请求的视频数据，即可以筛选出该地方电视台的频段1、频段3、频段5和频段8上提供的视频数据，以得到请求视频数据。
本发明实施例中，视频资源处理单元可以采用数据加密算法，对上述请求视频数据加密，得到处理后的视频数据，然后再将该处理后的视频数据发送给交换控制单元，进而通过光接入系统中的其他设备(例如PHY处理实体)将该处理后的视频数据发送给CM，CM接收到该处理后的视频数据后，可以采用与光接入设备约定的数据解密算法，解密该处理后的视频数据，从而得到加密前的视频数据，即终端设备请求的视频数据。
本发明实施例中，在视频数据的传输过程中，光接入设备中的视频资源处理单元可以对视频数据加密，CM可以对视频数据解密。通过设置加密解密机制可以防止视频数据在传输的过程中被篡改，保证视频数据安全地传输。进一步的，对视频数据加密后，对于请求该视频数据且已经对该视频数据付费的终端设备可以按照约定的解密算法，解密该视频数据，从而可以获取该视频数据。
可选的，本发明实施例中，上述光接入设备中的视频资源处理单元的数量可以为至少一个。示例性的，以一个视频资源处理单元(以下简称为第一视频资源处理单元，例如可以为上述如图5所示的视频资源处理单元33)为例，该第一视频资源处理单元对上述视频数据(即第一下行数据)做视频处理，得到处理后的视频数据之后，该第一视频资源处理单元可以将该处理后的视频数据发送给与该第一视频资源处理单元连接的交换控制单元，该第一视频资源处理单元还可以将该处理后的视频数据保存在该第一视频资源处理单元中(具体可以保存在该第一视频资源处理单元的存储模块中)。如此，在该处理后的视频数据发生错误(例如丢失)时，可以重新在该第一视频资源 处理单元中读取已保存的处理后的视频数据，从而能够避免由于处理后的视频数据发生错误而导致该处理后的视频数据传输失败的问题。
进一步的，上述至少一个视频资源处理单元中的每个视频资源处理单元均与交换控制单元连接。并且每个视频资源处理单元与上述如图5所示的视频资源处理单元33具有相同的功能，对于该至少一个视频资源处理单元的具体描述，可以参见上述如图5所示的视频资源处理单元33的相关描述。示例性的，该至少一个视频资源处理单元中的一个视频资源处理单元(例如上述的第一视频资源处理单元)可以将其处理得到的处理后的视频数据保存在该第一视频资源处理单元中，该至少一个视频资源处理单元中的其他视频资源处理单元(即该至少一个视频资源处理单元中除上述第一视频资源处理单元之外的视频资源处理单元)中的每个视频资源处理单元也可以将其处理得到的处理后的视频数据保存在该每个视频资源处理单元中(具体可以保存在该每个视频资源处理单元的存储模块中)，如此，在第一视频资源处理单元发生故障而无法处理和传输数据时，可以将视频数据传输业务切换到其他的视频资源处理单元中任意一个正常的视频资源处理单元，从而能够避免由于第一视频资源处理单元发生故障而导致该处理后的视频数据传输失败的问题。
可以理解的是，本发明实施例中，上述至少一个视频资源处理单元中的每个视频资源处理单元可以与通过交换控制单元上的不同接口与该交换控制单元连接。
需要说明的是，本发明实施例中，上述光接入设备中的视频资源处理单元的数量具体可以根据实际使用需求确定，本发明实施例不作具体限定。
结合图5，如图6所示，本发明实施例提供的光接入设备还可以包括与交换控制单元30连接的接口单元34。
其中，交换控制单元30具体用于将上述数字电信号形式的第二下行数据发送给接口单元34；该接口单元34用于接收交换控制单元30发送的数字电信号形式的第二下行数据，并且可以将该数字电信号形式的第二下行数据转换为转换为数字光信号形式的第二下行数据，以及将该数字光信号的第二下行数据形式发送给位于远端的PHY处理实体。
本发明实施例中，光接入设备内部的各个单元(例如交换控制单元、视频资源处理单元和MAC资源处理单元)处理和交互下行数据的过程中，该下行数据均为数字电信号形式，当光接入设备中的各个单元完成下行数据的处理后，该光接入设备中的接口单元可以将该光接入设备中的交换控制单元发送的经视频资源处理单元和MAC资源处理单元处理后得到的数字电信号形式的第二下行数据转换为数字光信号形式的第二下行数据，从而将该数字光信号形式的第二下行数据发送给位于远端的至少一个PHY处理实体。
可选的，本发明实施例中，上述接口单元可以包括点对多点的无源光纤网络(Passive Optical Network，PON)接口板和点对点(Point to Point，P2P)接口板中的至少一种。具体的，本发明实施例中的接口单元可以根据实际使用需求选择，本发明实施例不作限定。
需要说明的是，本发明实施例提供的光接入设备中，上述如图4所示的上联处理单元31与交换控制单元30可以为两个独立的单元。或者，上述如图4所示的上联处理单元31与交换控制单元30可以为一个集成单元，即该上联处理单元31的功能与该交换控制单元30的功能可以集成在一个单元中。具体的，可以根据实际使用需求选择，本发明实施例不作具体限定。
需要说明的是，本发明实施例中，由于上述光接入设备中的各个单元(例如上联处理单元、视频资源处理单元、MAC资源处理单元和接口单元)不能直接交互，即该各个单元中的任意两个单元之间不能直接传输数据，因此该各个单元中的任意两个单元之间均通过交换控制单元传输数据。例如，如果一个单元与另一个单元交互数据，则该一个单元可以将该数据发送给交换控制单元，由交换控制单元转发给该另一个单元。
下面再以在光接入设备中传输上行数据为例，对本发明实施例提供的光接入设备进行示例性的说明。
如图4所示，为本发明实施例提供的一种光接入设备的结构示意图，该光接入设备包括交换控制单元30以及该交换控制单元连接的上联处理单元31和MAC资源处理单元32。
其中，交换控制单元30用于接收上行数据(以下称为第一上行数据)，并将该第一上行数据发送给MAC资源处理单元32，且接收该MAC资源处理单元32发送的数字电信号形式的第二上行数据，以及将该数字电信号形式的第二上行数据发送给上联处理单元31。
MAC资源处理单元32用于接收上述交换控制单元30发送的第一上行数据，并且在MAC层处理该第一上行数据，得到数字电信号形式的第二上行数据，以及将该数字电信号形式的第二上行数据发送给交换控制单元30。
上联处理单元31用于接收上述交换控制单元发送的数字电信号形式的第二上行数据，并且将该数字电信号形式的第二上行数据发送给光网络中的设备(例如交换机或路由器)或者将该数字电信号形式的第二上行数据以数字光信号形式发送给光网络中的设备。
本发明实施例中，上述第一上行数据可以为请求数据，该请求数据可以包括终端设备的上网认证数据和终端设备的视频请求数据。上述在MAC层处理第一上行数据可以包括：解封装该第一上行数据。例如，可以按照以太网协议解封装该第一上行数据，得到数字电信号形式的第二上行数据。
本发明实施例中，上述上联处理单元可以将其接收到的数字电信号形式的第二上行数据直接发送给光网络中的设备。或者该上联处理单元可以将其接收到的该数字电信号形式的第二上行数据转换为数字光信号形式的第二上行数据，然后再将该数字光信号形式的第二上行数据发送给光网络中的设备。
如图6所示，本发明实施例提供的光接入设备还可以包括与交换控制单元30连接的接口单元34。该接口单元34用于接收数字光信号形式的第一上行数据，并且将数字光信号形式的第一上行数据转换为数字光信号形式的第一上行数据，以及将该数字光信号形式的第一上行数据发送给交换控制单元 30。
本发明实施例中，上述接口单元可以接收光接入系统中位于远端的PHY处理实体发送的数字光信号形式的上行数据(即上述的数字光信号形式的第一上行数据)，并且将该数字光信号形式的第一上行数据转换为数字电信号形式的上行数据，以及将该数字电信号形式的第一上行数据发送给交换控制单元，从而光接入设备中的各个单元(例如交换控制单元和MAC资源处理单元)可以处理和交互该数字电信号形式的第一上行数据。
需要说明的是，本发明实施例中，在传输上行数据的过程中对于光接入设备的其他描述，可以参见上述在传输下行数据的过程中对于光接入设备的相关描述，此处不再赘述。
本发明实施例提供的光接入设备，该光接入设备中的交换控制单元可以接收第一上行数据，并将该第一上行数据发送给MAC资源处理单元。MAC资源处理单元接收交换控制单元发送的第一上行数据，并且在MAC层处理该第一上行数据，得到数字电信号形式的第二上行数据，以及将该数字电信号形式的第二上行数据发送给交换控制单元。交换控制单元接收到MAC资源处理单元发送的数字电信号形式的第二上行数据后，交换控制单元将该数字电信号形式的第二上行数据发送给上联处理单元。上联处理单元接收到交换控制单元发送的数字电信号形式的第二上行数据后，可以将该数字电信号形式的第二上行数据发送给光网络中的设备或者将该数字电信号形式的第二上行数据以数字光信号形式发送给光网络中的设备。与现有技术相比，本发明实施例中，由于可以在位于局端的光接入设备中设置MAC资源处理单元，从而可以在该光接入设备中完成在MAC层处理光网络中的上行数据(即第一上行数据)，因此在远端一侧的设备中无需在集成MAC层的功能，从而本发明实施例能够使得远端一侧的设备在一定程度上降低由于在MAC层处理第一上行数据带来的功耗，即本发明实施例提供的光接入设备能够降低远端一侧的设备的功耗。
本发明实施例提供的光接入设备(即上述如图4、图5或图6所示的光接入设备)可以应用于本发明实施例提供的光接入系统中。对于光接入系统的描述具体可以参见上述实施例中关于光接入系统(即上述如图2或3所示的光接入系统)的相关描述。
本发明实施例提供一种处理数据的方法，该方法可以应用于光接入设备中。例如，该方法可以应用于光接入设备处理下行数据和光接入设备处理上行数据的过程中。具体的，在光接入设备处理下行数据的过程中，该光接入设备可以接收下行数据，并且处理该下行数据，得到数字电信号形式的下行数据，以及将该数字电信号形式的下行数据转换为数字光信号形式的下行数据，并且向至少一个PHY处理实体分别发送该数字光信号形式的下行数据，从而完成下行数据的处理。在光接入设备处理上行数据的过程中，光接入设备可以接收上行数据，并且处理该上行数据，得到数字电信号形式的上行数 据，以及将该数字电信号形式的上行数据发送给光网络中的设备(例如交换机或路由器)；或者将该数字电信号形式的上行数据以数字光信号形式发送给光网络中的设备，从而完成上行数据的处理。下面分别以光接入设备处理下行数据和处理上行数据为例，对本发明实施例提供的处理数据的方法进行详细地说明。
首先，以光接入设备处理下行数据为例，对本发明实施例提供的处理数据的方法进行示例性的说明。
如图7所示，本发明实施例提供一种处理数据的方法，该方法可以包括S101-S104：
S101、光接入设备接收第一下行数据。
S102、光接入设备在MAC层对第一下行数据做第一处理，得到数字电信号形式的第二下行数据。
S103、光接入设备将数字电信号形式的第二下行数据转换为数字光信号形式的第二下行数据。
S104、光接入设备向至少一个PHY处理实体分别发送数字光信号形式的第二下行数据。
本发明实施例中，光接入设备可以通过该光接入设备的上联处理单元接收该第一下行数据，并在该光接入设备中的MAC资源处理单元的MAC层第一下行数据做第一处理，得到数字电信号形式的第二下行数据，以及在光接入设备的接口单元中将数字电信号形式的第二下行数据转换为数字光信号形式的第二下行数据。
上述光接入设备执行S101-S104时，具体可以由该光接入设备中的各个功能单元完成，对于S101-S104的具体描述，可以参见上述实施例中对于光接入设备(如图4至图6所示的光接入设备)传输下行数据的相关描述，此处不再赘述。
可选的，结合图7，如图8所示，上述S102之后，本发明实施例提供的处理数据的方法还可以包括S105：
S105、光接入设备保存数字电信号形式的第二下行数据。
需要说明的是，本发明实施例可以不限定S105与S103的执行顺序，即本发明实施例可以先执行S105，后执行S103；也可以先执行S103，后执行S105；还可以同时执行S105和S103。
对于S105的具体描述可以参见上述实施例中对于光接入设备(具体为光接入设备的中MAC资源处理单元)中保存数字电信号形式的第二下行数据的相关描述，此处不再赘述。
可选的，结合图6，如图9所示，本发明实施例中，当上述第一下行数据为视频数据时，上述S101-S104具体可以替换为S201-S205:
S201、光接入设备接收视频数据。
S202、光接入设备对视频数据做第二处理，得到处理后的视频数据。
S203、光接入设备在MAC层对处理后的视频数据做第一处理，得到数 字电信号形式的第二下行数据。
S204、光接入设备将数字电信号形式的第二下行数据转换为数字光信号形式的第二下行数据。
S205、光接入设备向至少一个PHY处理实体分别发送数字光信号形式的第二下行数据。
本发明实施例中，可以在该光接入设备的视频资源处理单元中对视频数据做第二处理，得到处理后的视频数据。
上述光接入设备执行S201-S205时，具体可以由该光接入设备中的各个功能单元完成，对于S201-S205的具体描述，可以参见上述实施例中对于光接入设备(如图4至图6所示的光接入设备)传输下行数据的相关描述，此处不再赘述。
可选的，结合图9，上述S202之后，本发明实施例提供的处理数据的方法还可以包括S206：
S206、光接入设备保存处理后的视频数据。
需要说明的是，本发明实施例可以不限定S206与S202的执行顺序，即本发明实施例可以先执行S206，后执行S202；也可以先执行S202，后执行S206；还可以同时执行S206和S202。
对于S206的具体描述可以参见上述实施例中对于光接入设备(具体为光接入设备的视频资源处理单元)中保存处理后的视频数据的相关描述，此处不再赘述。
本发明实施例提供的处理数据的方法，光接入设备可以接收第一下行数据，并在该光接入设备中的MAC层对该第一下行数据做第一处理，得到数字电信号形式的第二下行数据，且将数字电信号形式的第二下行数据转换为数字光信号形式的第二下行数据，以及向至少一个PHY处理实体分别发送该数字光信号形式的第二下行数据。与现有技术相比，本发明实施例中，由于可以在位于局端的光接入设备中的MAC层处理(即上述的第一处理)光网络中的下行数据(即第一下行数据)，因此在远端一侧的设备中无需再集成MAC层的功能，从而本发明实施例能够使得远端一侧的设备在一定程度上降低由于在MAC层处理第一下行数据带来的功耗，即本发明实施例提供的光接入设备能够降低远端一侧的设备的功耗。
下面再以光接入设备处理上行数据为例，对本发明实施例提供的处理数据的方法进行示例性的说明。
如图10所示，本发明实施例提供一种处理数据的方法，该方法可以包括S301-S304：
S301、光接入设备接收第一上行数据。
S302、光接入设备在MAC层处理该第一上行数据，得到数字电信号形式的第二上行数据。
S303、光接入设备将数字电信号形式的第二上行数据发送给光网络中的设备或者将该数字电信号形式的第二上行数据以数字光信号形式发送给光网 络中的设备。
本发明实施例中，上述光接入设备执行S301-S303，是由该光接入设备中的各个功能单元完成的，对于S301-S303的具体描述，可以参见上述实施例中对于光接入设备传输上行数据的相关描述，此处不再赘述。
本发明实施例提供的处理数据的方法，光接入设备可以接收第一上行数据，并在光接入设备中的MAC层处理该第一上行数据，得到数字电信号形式的第二上行数据，以及将光接入设备将数字电信号形式的第二上行数据发送给光网络中的设备或者将该数字电信号形式的第二上行数据以数字光信号形式发送给光网络中的设备。与现有技术相比，本发明实施例中，由于可以在位于局端的光接入设备中的MAC层处理光网络中的上行数据(即第一上行数据)，因此在远端一侧的设备中无需在集成MAC层的功能，从而本发明实施例能够使得远端一侧的设备在一定程度上降低由于在MAC层处理第一上行数据带来的功耗，即本发明实施例提供的光接入设备能够降低远端一侧的设备的功耗。
以上所述，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何在本申请揭露的技术范围内的变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应以所述权利要求的保护范围为准。

Claims (16)

  1. 一种光接入系统，其特征在于，包括：光接入设备和与所述光接入设备连接的至少一个物理PHY处理实体；其中，
    所述光接入设备，用于接收第一下行数据，并且在所述光接入设备中的媒体接入控制MAC层对所述第一下行数据做第一处理，得到数字电信号形式的第二下行数据，以及将数字电信号形式的所述第二下行数据以数字光信号形式分别发送给所述至少一个PHY处理实体；
    所述至少一个PHY处理实体中的每个PHY处理实体，用于接收所述光接入设备发送的数字光信号形式的所述第二下行数据，并且在PHY层对数字光信号形式的所述第二下行数据做第二处理，得到模拟电信号形式的第三下行数据，以及将模拟电信号形式的所述第三下行数据发送给电缆调制解调器CM。
  2. 根据权利要求1所述的光接入系统，其特征在于，所述光接入系统还包括分光器，所述光接入设备与所述每个PHY处理实体经所述分光器连接；
    所述光接入设备，具体用于通过所述分光器将数字光信号形式的所述第二下行数据分别发送给所述每个PHY处理实体。
  3. 根据权利要求1或2所述的光接入系统，其特征在于，所述光接入设备包括交换控制单元以及与所述交换控制单元连接的上联处理单元和MAC资源处理单元；其中，
    所述上联处理单元，用于接收所述第一下行数据，并且将所述第一下行数据发送给所述交换控制单元；
    所述交换控制单元，用于接收所述上联处理单元发送的所述第一下行数据，并且将所述第一下行数据发送给所述MAC资源处理单元，以及接收所述MAC资源处理单元发送的数字电信号形式的所述第二下行数据，并且将数字电信号形式的所述第二下行数据以数字光信号形式分别发送给所述至少一个PHY处理实体；
    所述MAC资源处理单元，用于接收所述交换控制单元发送的所述第一下行数据，并且在MAC层对所述第一下行数据做所述第一处理，得到数字电信号形式的所述第二下行数据，以及将数字电信号形式的所述第二下行数据发送给所述交换控制单元。
  4. 根据权利要求3所述的光接入系统，其特征在于，
    所述MAC资源处理单元，还用于保存数字电信号形式的所述第二下行数据。
  5. 根据权利要求3或4所述的光接入系统，其特征在于，所述光接入设备还包括与所述交换控制单元连接的视频资源处理单元，所述第一下行数据为视频数据；
    所述交换控制单元，具体用于接收所述上联处理单元发送的所述视频数据，并将所述视频数据发送给所述视频资源处理单元，且接收所述视频资源处理单元发送的处理后的视频数据，并将所述处理后的视频数据发送给所述MAC资源处理单元，以及接收所述MAC资源处理单元发送的数字电信号形式的所 述第二下行数据；
    所述视频资源处理单元，用于接收所述交换控制单元发送的所述视频数据，并且对所述视频数据做第三处理，得到处理后的视频数据，以及将所述处理后的视频数据发送给所述交换控制单元；
    所述MAC资源处理单元，具体用于接收所述交换控制单元发送的所述处理后的视频数据，并且在MAC层对所述处理后的视频数据做所述第一处理，得到数字电信号形式的所述第二下行数据，以及将数字电信号形式的所述第二下行数据发送给所述交换控制单元。
  6. 根据权利要求5所述的光接入系统，其特征在于，
    所述视频资源处理单元，还用于保存所述处理后的视频数据。
  7. 根据权利要求3至6任意一项所述的光接入系统，其特征在于，所述光接入设备还包括与所述交换控制单元连接的接口单元；
    所述交换控制单元，具体用于将数字电信号形式的所述第二下行数据发送给所述接口单元；
    所述接口单元，用于接收所述交换控制单元发送的数字电信号形式的数字电信号形式的所述第二下行数据，并且将数字电信号形式的数字电信号形式的所述第二下行数据转换为数字光信号形式的所述第二下行数据，以及将数字光信号形式的所述第二下行数据的发送给所述至少一个PHY处理实体。
  8. 一种光接入设备，其特征在于，包括：交换控制单元以及与所述交换控制单元连接的上联处理单元和媒体接入控制MAC资源处理单元；其中，
    所述上联处理单元，用于接收第一下行数据，并且将所述第一下行数据发送给所述交换控制单元；
    所述交换控制单元，用于接收所述上联处理单元发送的所述第一下行数据，并且将所述第一下行数据发送给所述MAC资源处理单元，以及接收所述MAC资源处理单元发送的数字电信号形式的第二下行数据；
    所述MAC资源处理单元，用于接收所述交换控制单元发送的所述第一下行数据，并且在MAC层对所述第一下行数据做第一处理，得到数字电信号形式的所述第二下行数据，以及将数字电信号形式的所述第二下行数据发送给所述交换控制单元。
  9. 根据权利要求8所述的光接入设备，其特征在于，
    所述MAC资源处理单元，还用于保存数字电信号形式的所述第二下行数据。
  10. 根据权利要求8或9所述的光接入设备，其特征在于，所述光接入设备还包括与所述交换控制单元连接的视频资源处理单元，所述第一下行数据为视频数据；
    所述交换控制单元，具体用于接收所述上联处理单元发送的所述视频数据，并将所述视频数据发送给所述视频资源处理单元，且接收所述视频资源处理单元发送的处理后的视频数据，并将所述处理后的视频数据发送给所述MAC资源处理单元，以及接收所述MAC资源处理单元发送的数字电信号形式的所 述第二下行数据；
    所述视频资源处理单元，用于接收所述交换控制单元发送的所述视频数据，并且对所述视频数据做第二处理，得到处理后的视频数据，以及将所述处理后的视频数据发送给所述交换控制单元；
    所述MAC资源处理单元，具体用于接收所述交换控制单元发送的所述处理后的视频数据，并且在MAC层对所述处理后的视频数据做所述第一处理，得到数字电信号形式的所述第二下行数据，以及将数字电信号形式的所述第二下行数据发送给所述交换控制单元。
  11. 根据权利要求10所述的光接入设备，其特征在于，
    所述视频资源处理单元，还用于保存所述处理后的视频数据。
  12. 根据权利要求8至11任意一项所述的光接入设备，其特征在于，所述光接入设备还包括与所述交换控制单元连接的接口单元；
    所述交换控制单元，具体用于将数字电信号形式的所述第二下行数据发送给所述接口单元；
    所述接口单元，用于接收所述交换控制单元发送的数字电信号形式的所述第二下行数据，并且将数字电信号形式的所述第二下行数据转换为数字光信号形式的所述第二下行数据，以及将数字光信号形式的所述第二下行数据发送给物理PHY处理实体。
  13. 一种处理数据的方法，其特征在于，包括：
    光接入设备接收第一下行数据；
    所述光接入设备在媒体接入控制MAC层对所述第一下行数据做第一处理，得到数字电信号形式的第二下行数据；
    所述光接入设备将数字电信号形式的所述第二下行数据转换为数字光信号形式的所述第二下行数据；
    所述光接入设备向至少一个物理PHY处理实体分别发送数字光信号形式的所述第二下行数据。
  14. 根据权利要求13所述的方法，其特征在于，所述光接入设备在MAC层对所述第一下行数据做第一处理，得到数字电信号形式的第二下行数据之后，所述方法还包括：
    所述光接入设备保存数字电信号形式的所述第二下行数据。
  15. 根据权利要求13或14所述的方法，其特征在于，所述第一下行数据为视频数据；
    所述光接入设备在MAC层对所述第一下行数据做第一处理，得到数字电信号形式的第二下行数据之前，所述方法还包括：
    所述光接入设备对所述视频数据做第二处理，得到处理后的视频数据；
    所述光接入设备在MAC层对所述第一下行数据做第一处理，得到数字电信号形式的第二下行数据，包括：
    所述光接入设备在MAC层对所述处理后的视频数据做所述第一处理，得到数字电信号形式的所述第二下行数据。
  16. 根据权利要求15所述的方法，其特征在于，所述光接入设备对所述视频数据做第二处理，得到处理后的视频数据之后，所述方法还包括：
    所述光接入设备保存所述处理后的视频数据。
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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102916746A (zh) * 2012-10-09 2013-02-06 青岛海信宽带多媒体技术有限公司 无源光网络及其光网络单元光模块
CN103875240A (zh) * 2013-09-30 2014-06-18 华为技术有限公司 一种数据传输的方法、装置及系统
US20150295669A1 (en) * 2014-04-14 2015-10-15 Cisco Technology, Inc. Managing time offset and frequency drift in asynchronous docsis remote phy network environments

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100724875B1 (ko) * 2002-06-24 2007-06-04 삼성전자주식회사 이더넷 수동 광가입자망 시스템
CN1200533C (zh) * 2002-07-08 2005-05-04 华为技术有限公司 一种实现系统设备内部模块间的通信方法
JP2008160718A (ja) * 2006-12-26 2008-07-10 Mitsubishi Electric Corp Ｐｏｎシステム
WO2014187538A1 (en) * 2013-05-20 2014-11-27 Alcatel Lucent Multicast video transmission in gigabit-capable passive optical networks

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102916746A (zh) * 2012-10-09 2013-02-06 青岛海信宽带多媒体技术有限公司 无源光网络及其光网络单元光模块
CN103875240A (zh) * 2013-09-30 2014-06-18 华为技术有限公司 一种数据传输的方法、装置及系统
US20150295669A1 (en) * 2014-04-14 2015-10-15 Cisco Technology, Inc. Managing time offset and frequency drift in asynchronous docsis remote phy network environments

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP3553974A4 *

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