WO2016106513A1 - 一种无源光网络中唤醒光网络单元的方法、设备和系统 - Google Patents

一种无源光网络中唤醒光网络单元的方法、设备和系统 Download PDF

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Publication number
WO2016106513A1
WO2016106513A1 PCT/CN2014/095372 CN2014095372W WO2016106513A1 WO 2016106513 A1 WO2016106513 A1 WO 2016106513A1 CN 2014095372 W CN2014095372 W CN 2014095372W WO 2016106513 A1 WO2016106513 A1 WO 2016106513A1
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WIPO (PCT)
Prior art keywords
onu
packet
service
feature
olt
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PCT/CN2014/095372
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English (en)
French (fr)
Inventor
刘海雄
郑刚
万席锋
岳东升
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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 PCT/CN2014/095372 priority Critical patent/WO2016106513A1/zh
Priority to CN201480077062.0A priority patent/CN106464379B/zh
Priority to EP14909326.2A priority patent/EP3229387B1/en
Publication of WO2016106513A1 publication Critical patent/WO2016106513A1/zh
Priority to US15/635,992 priority patent/US10284298B2/en

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    • 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
    • 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
    • H04B10/60—Receivers
    • H04B10/66—Non-coherent receivers, e.g. using direct detection

Definitions

  • the present invention relates to the field of optical communications, and in particular, to a method, device and system for waking up an optical network unit in a passive optical network.
  • the optical fiber transmission technology Compared with the cable transmission technology, the optical fiber transmission technology has the advantages of large capacity, low loss, and strong anti-electromagnetic interference capability. Therefore, as the transmission cost of the optical fiber is gradually reduced, the optical fiber of the access network is an inevitable development trend. Representing the access network segment of the “last mile” part, which has the requirements of ultra-low cost, simple structure and convenient implementation, which brings great challenges to technology implementation, and PON (Passive Optical Network)
  • PON Passive Optical Network
  • the use of passive components is currently the most promising technology for implementing broadband optical access networks.
  • the PON technology mainly includes APON (Asynchronous Transfer Mode Passive Optical Network), EPON (Ethernet Passive Optical Network), and GPON (Gigabit Passive Optical Network). , Gigabit Passive Optical Network) and so on.
  • the standard does not define how the wake-up event is triggered when the ONU is in the power-saving mode.
  • the industry-wide technology uses the PON port traffic detection method to trigger the wake-up event. Specifically, when the ONU is in the power-saving mode, the ONU detects the receiving and sending traffic of the PON port, and the traffic rate is greater than a certain threshold to trigger the wake-up event; the OLT simultaneously detects the receiving and sending traffic of the PON port of the ONU, and the traffic rate is greater than a certain A threshold value triggers a wakeup event.
  • the general PON port traffic detection method has the following drawbacks:
  • the traffic rate in the initial phase of the service is small, and the service cannot be reached in the signaling interaction phase.
  • the embodiments of the present invention provide a method, device, and system for waking up an optical network unit in a passive optical network, so as to solve the problem that the ONU cannot be used when the service has a high delay time requirement or a small traffic rate in the initial stage of the service. The problem of being awakened in time.
  • an embodiment of the present invention provides a method for waking up an ONU of an optical network unit in a PON of a passive optical network, including: an optical line terminal OLT receiving a service packet corresponding to an ONU in a power saving mode, the service packet Carrying a message feature, the message feature indicating a service type of the service packet; the OLT detecting a packet feature of the service packet; and when the packet feature of the service packet is a preset need to wake up The OLT wakes up the ONU in the power saving mode when the message feature of the ONU is used.
  • the preset packet characteristics that need to wake up the ONU include: indicating a packet feature of the voice service and/or a message indicating the video service. Text feature.
  • the power saving mode includes that the sending module of the ONU is in an open state, and the OLT receiving corresponds to being in the
  • the service message of the ONU in the energy-saving mode includes: when the ONU in the energy-saving mode is in the open state, the OLT receives the service packet of the ONU in the energy-saving mode.
  • the OLT receives a service report corresponding to the ONU in the power saving mode.
  • the text includes: the OLT receiving is sent from a network side device The service packet is sent to the ONU in the energy-saving mode.
  • the power saving mode includes that the receiving module of the ONU is in an open state, where The OLT wakes up the ONU in the power saving mode, and the OLT wakes up the ONU in the energy saving mode when the ONU in the power saving mode is in the open state of the receiving module.
  • the OLT receives a service report corresponding to the ONU in the power saving mode Before the method, the method includes: the OLT receiving the preset message feature from the ONU that needs to wake up the ONU.
  • the OLT receives, before the ONU corresponding to the power saving mode, including The OLT sets the preset message feature that needs to wake up the ONU.
  • the power saving mode includes a periodic sleep mode, where the periodicity In the sleep mode, the ONU cyclically switches between a conscious sleep state in which the receiving module and the transmitting module are in an open state, and a sleeping state in which the ONU receives in the sleep state The module and the send module are off.
  • the power saving mode includes a doze mode, in the doze mode, The ONU cyclically switches between the conscious snoring state and the listening state.
  • the receiving module and the sending module are in an open state
  • the sending module is in a closed state
  • the receiving The module is open.
  • the OLT wakes up the ONU in the power saving mode, and specifically includes: the OLT instructing the ONU to wake up from the power saving mode by using a mandatory wakeup flag FWI.
  • the ONU in the tenth possible implementation manner of the first aspect, after the OLT wakes up the ONU in the power saving mode, The ONU is in an active mode, and in the active mode, the receiving module and the transmitting module of the ONU remain in an open state.
  • the packet feature includes: a virtual local area network identifier VLAN ID, At least one of the IP packet difference service code point DSCP value, the transmission control protocol TCP port number, the user datagram protocol UDP port number, and the 802.1p priority.
  • the embodiment of the present invention provides a method for waking up an ONU of an optical network unit in a PON of a passive optical network, including: receiving an service message when the ONU is in a power-saving mode, and the service packet carries a packet feature.
  • the message feature indicates the service type of the service packet; the ONU detects the packet feature of the service packet; and when the packet feature is a preset packet feature that needs to wake up the ONU, the ONU Wake up from the power save mode.
  • the preset packet feature that needs to wake up the ONU includes: indicating a packet feature of the voice service and/or a message indicating the video service. Text feature.
  • the ONU before the ONU is in the power saving mode, the ONU needs to set the preset Wake up the message characteristics of the ONU.
  • the ONU receiving The preset from the OLT needs to wake up the ONU Message characteristics.
  • the receiving the service packet includes: The ONU receives a service packet from the user side.
  • the power saving mode includes that the receiving module of the ONU is in an open state, where When the ONU is in the power-saving mode, receiving the service packet includes: the ONU receiving the service packet from the network side device.
  • the ONU is awake from the power saving mode, specifically: The ONU instructs the ONU to wake up from the power save mode by the local wakeup indicator LWI.
  • the ONU in the seventh possible implementation manner of the second aspect, after the ONU wakes up from the power saving mode, the ONU is in the An active mode in which the receiving module and the transmitting module of the ONU remain in an open state.
  • the packet feature includes: a virtual local area network identifier, a VLAN ID, and an IP address. At least one of a message difference service code point DSCP value, a transmission control protocol TCP port number, a user datagram protocol UDP port number, and an 802.1p priority.
  • an embodiment of the present invention provides an optical line terminal OLT, where the OLT includes: a receiving unit, configured to receive a service packet corresponding to an ONU in a power saving mode, where the service packet carries a packet feature, The packet feature indicates a service type of the service packet; the detecting unit is configured to detect a packet feature of the service packet; and the waking unit is configured to: when the packet feature of the service packet is preset When the message feature of the ONU needs to be awake, the OLT wakes up the ONU in the energy saving mode.
  • the preset packet characteristics that need to wake up the ONU include: a packet feature of the voice service and/or a packet indicating the video service. feature.
  • the second possible implementation manner of the third aspect further includes: a message feature configuration unit, configured to receive the preset from the ONU The message characteristics of the ONU need to be awake.
  • the third possible implementation manner of the third aspect further includes: a message feature setting unit, configured to set the The preset needs to wake up the message characteristics of the ONU.
  • the waking unit is configured to indicate the FWI indication by forcibly waking up The ONU wakes up from the power saving mode.
  • the packet feature includes: a virtual local area network identifier, a VLAN ID, and an IP address. At least one of a message difference service code point DSCP value, a transmission control protocol TCP port number, a user datagram protocol UDP port number, and an 802.1p priority.
  • an embodiment of the present invention provides an optical network unit ONU, where the ONU includes: a receiving unit, configured to receive a service packet, where the service packet carries a packet feature, and the packet feature indicates the service packet. a service type of the text; a detecting unit, configured to detect a packet feature of the service packet; and a wake-up unit, configured to: when the packet feature is a preset packet feature that needs to wake up the ONU, the ONU is energy-saving Wake up in mode.
  • the preset packet characteristics that need to wake up the ONU include: a packet feature of the voice service and/or a packet feature of the video service. .
  • the second possible implementation manner of the fourth aspect further includes: a message feature setting unit, configured to set The preset needs to wake up the message characteristics of the ONU.
  • the third possible implementation manner of the fourth aspect further includes: a message feature configuration unit, configured to receive the source The preset OLT needs to wake up the message characteristics of the ONU.
  • the waking unit is configured to indicate the LWI indication by using local wakeup Wake up in power save mode.
  • the packet feature includes: a virtual local area network identifier, a VLAN ID, and an IP address. At least one of a message difference service code point DSCP value, a transmission control protocol TCP port number, a user datagram protocol UDP port number, and an 802.1p priority.
  • an embodiment of the present invention provides a system for a passive optical network PON to wake up an optical network unit ONU, where the system includes: an OLT and an ONU, and the OLT is configured to receive an ONU corresponding to the energy saving mode.
  • a service packet the service packet carrying a packet feature, the packet feature indicating a service type of the service packet, and the OLT, configured to detect a packet feature of the service packet, when When the packet of the service packet is a preset feature that needs to wake up the ONU, the ONU in the energy-saving mode is awakened; the ONU is used to wake up from the energy-saving mode.
  • an embodiment of the present invention provides a system for waking up an ONU of an optical network unit of a PON of a passive optical network, where the system includes: an OLT and an ONU, where the ONU is configured to receive a service packet, The service packet carries the packet feature, and the packet feature indicates the service type of the service packet; the ONU is configured to detect the packet feature of the service packet, and the packet feature of the service packet.
  • the OLT is configured to receive a wakeup indication request to the OLT, and to indicate that the ONU wakes up from the power save mode.
  • an optical line terminal OLT includes: a processor, a memory, and a bus And a communication interface; the memory is configured to store the execution instruction, the processor is connected to the memory through the bus, and when the OLT is running, the processor executes the execution instruction of the memory storage, so that the OLT performs any one of the first aspect and the first aspect The method described for the implementation.
  • an optical network unit ONU includes: a processor, a memory, a bus, and a communication interface; the memory is configured to store execution instructions, the processor and the memory are connected through a bus, and when the ONU is running, the processor performs execution of the memory storage.
  • the OLT and the ONU preset the packet characteristics of the service type of the service packet that needs to be awake to the ONU.
  • the OLT or the ONU detects the service packet.
  • the packet characteristics are preset to wake up the ONU packet characteristics, the ONU is triggered to wake up from the power-saving mode, and the packet feature can be used as a trigger condition for waking up the ONU without determining the threshold of the wake-up, thereby ensuring the ONU even if In the case of a small traffic rate in the initial stage of the service, it can also wake up in time, and also meet the high QoS requirements of the service.
  • FIG. 1 is a schematic structural diagram of a PON system
  • FIG. 2 is a schematic diagram of state transition of a PON energy-saving mode ONU
  • FIG. 3 is a signaling interaction diagram of a method for waking up an optical network unit ONU in a passive optical network PON according to an embodiment of the present invention
  • FIG. 4 is a signaling interaction diagram of a method for waking up an optical network unit ONU in a passive optical network PON according to an embodiment of the present invention
  • FIG. 5 is an exemplary flowchart of a method for waking up an optical network unit ONU in a passive optical network PON according to an embodiment of the present invention
  • FIG. 6 is an exemplary flowchart of a method for implementing wake-up of an optical network unit ONU in a passive optical network PON according to an embodiment of the present invention
  • FIG. 7 is a schematic diagram showing the logical structure of an optical line terminal OLT implementing an embodiment of the present invention.
  • FIG. 8 is a schematic diagram of a logical structure of an optical network unit ONU implementing an embodiment of the present invention.
  • FIG. 9 is a schematic diagram showing the logical structure of a passive optical network PON system according to an embodiment of the present invention.
  • FIG. 10 is a schematic structural diagram of a computer device for implementing a passive optical network PON according to an embodiment of the present invention.
  • the PON is used for the "first kilometer" of the network, providing a connection between the service provider's central office (CO) and the customer premises.
  • the entire PON system is usually composed of an optical line terminal (OLT) at the central office and a series of optical network units (ONUs) at the customer premises. These devices are made up of optical fibers, passive optical splitters or couplers.
  • “first kilometer” is a point-to-multipoint network, that is, a central office provides services for a certain number of users.
  • a PON can adopt a tree topology.
  • the backbone fiber connects the OLT of the central office to the passive optical splitter in the ODN Or a coupler, through a number of branch fibers, the passive optical splitter can separate and distribute the downstream optical signals to the user, and synthesize the upstream optical signals from the user through the passive couplers.
  • the downlink transmits data in the form of a broadcast, and the OLT broadcasts data packets to all ONUs.
  • the message frame that the OLT sends the time window authorization to the ONU usually contains two pieces of information, which allows the ONU to open the start time sent by the optical module and allow the ONU to open the duration of the optical module transmission.
  • the OLT dynamically allocates the authorization time window of each ONU according to the bandwidth requirements of each ONU, so that the bandwidth of each ONU can be dynamically changed and conforms to the preset bandwidth policy. This calculation and scheduling process is called DBA (Dynamically Bandwidth Assignment). Allocation) algorithm. Uplink traffic transmission is relatively complicated.
  • time-division multiple access is adopted in the uplink data flow, that is, the OLT of the central office performs time window authorization for each ONU in the network, and the authorization is different.
  • the ONU sends uplink data in different time periods, so that the uplink data of different ONUs does not conflict. Therefore, the ONU transmits data in accordance with the control requirements of the OLT.
  • the OLT uses a passive optical splitter to split an optical signal into multiple optical signals and connect them to the ONU through optical fibers.
  • the number of ONUs corresponding to one OLT is very large. Therefore, in order to reduce the power consumption of the ONU, the ONU has two energy-saving modes: a Cyclic Sleep mode and a Doze mode.
  • FIG. 2 is a schematic diagram of a state transition of the PON energy-saving mode ONU.
  • the ONU cycles through the following two states: the conscious sleep state (Sleep Aware) and the sleep state (Asleep).
  • the conscious sleep state When in a conscious sleep state, hardware devices such as receiving and transmitting bidirectional optical modules work normally, and energy saving cannot be achieved at this time.
  • the ONU When the ONU is in asleep state, hardware devices such as receiving and transmitting bidirectional optical modules are turned off, and the ONU consumes less power.
  • the ONU cycles through the following two states: conscious snoring state (Doze Aware) and listening state (Listen).
  • conscious snoring state Doze Aware
  • listening state Listenen
  • the ONU When the ONU is in the listening state, the hardware components such as the optical module in the sending direction are turned off, and the ONU energy consumption is reduced.
  • the periodic sleep mode usually occurs in a scenario where the ONU is not used by the user. For example, during the time when the user sleeps at night, the energy consumption saved is more.
  • the hiccup mode usually occurs when the user only uses the downlink service and does not use the uplink service. For example, when the user watches the IPTV (interactive network television) multicast, the energy consumption saved is relatively small.
  • the service supported by the ONU is a multi-service service.
  • the typical three-network convergence service includes three types of services: voice service, data service, and video service.
  • the voice service includes a VoIP service of the network telephone;
  • the data service includes a bandwidth service based on a computer network, a bandwidth service based on a cable television network, and the like;
  • the video service includes an interactive network television IPTV service, a mobile TV service, a digital television service, and the like. business. In these services, some services have strict requirements on the delay time.
  • the uplink service packets of the IPTV service contain the channel selection information of the user, which directly affects the user experience.
  • the traffic rate in the initial stage is small, such as VOIP service.
  • the traffic rate cannot reach the threshold of wake-up, which affects the user experience. Therefore, in these cases, the use of traffic detection causes the ONU to fail to wake up in time.
  • the OLT or the ONU receives the service packet and detects the service when the OLT or the ONU receives the service packet by using the packet feature that is required to wake up the ONU on the OLT and the ONU.
  • the packet characteristics of the packet are the characteristics of the packet that needs to wake up the ONU, the energy-saving wake-up event is triggered, and the ONU in the energy-saving mode can be woken up in time.
  • the preset packet characteristics that need to be awake to the ONU mentioned in the other embodiments may be carried in service packets of the corresponding service type on the ONU, with a small traffic rate or a high service QoS requirement in the initial phase of the service. Message characteristics.
  • the packet feature may indicate a service type, including but not limited to the following: a VLAN ID, an 802.1p, an Ethernet packet type, an IP packet DSCP value, a TCP port number, and a UDP port.
  • the VLAN ID and the 802.1p are the fields in the tagged frame, and the VLAN ID indicates the virtual local area network to which the data frame belongs, which is generally set by the operator; 802.1p indicates the priority of the data frame;
  • the text type is a standard Ethernet frame, which is also called a type field of an untagged frame.
  • the DSCP value of the IP packet indicates the priority of the datagram.
  • the TCP port number and the UDP port include the source port and the destination port. And distinguish the application process of the source device and the destination device.
  • Each type of service such as a voice service, a data service, or a video service, may be represented by setting a combination of one or more of the above message characteristics in a message header of a service message.
  • the characteristics of the packet that needs to wake up the ONU may include the voice service packet feature and the video service packet feature.
  • Voice services include VOIP services
  • video services include IPTV services.
  • the uplink service packet of the IPTV service includes the channel selection information of the user, and the ONU needs to wake up in time.
  • the packet type of the service packet is not unique. It is usually set by the developer or the carrier. For example, the VLAN ID is 6, the IPCP value is 47, the TCP port number, and UDP. If the port number is 5060, the voice service packet is characterized.
  • the VLAN ID is 4, the 802.1p priority is 7, and the DSCP value of the IP packet is 56, indicating that the service packet is a video service packet.
  • the feature is usually represented by the VLAN ID and 802.1p priority, and the IP packet DSCP value, which is usually set by the operator.
  • FIG. 3 is a signaling interaction diagram of a method for waking up an optical network unit ONU in a passive optical network PON according to an embodiment of the invention.
  • the ONU sets the packet characteristics of the ONU, and configures the packet characteristics of the ONU to be used as the trigger condition for the ONU energy-saving wakeup.
  • the ONU configures the packet characteristics for the OLT by adding a management entity.
  • the ONU configures the OLT to configure the packet by extending the OAM (Operation, Administration, and Maintenance) operations. feature.
  • OAM Operaation, Administration, and Maintenance
  • the ONU sets a packet feature that needs to wake up the ONU.
  • the ONU Before the establishment of services such as voice, data, and video, these services must be opened through the service management channel.
  • the ONU sets the packet characteristics that need to be awake to the ONU.
  • the two types of implementations are: For the gateway type ONU, when the ONU communicates with the service management network element (for example, iTMS or BMS), the service management network element will need to open the service.
  • the information about the underlying channel information and the QoS is sent to the ONU.
  • the ONU can extract the packet characteristics of the service packets in each service type that is opened.
  • the ONU communicates with the service server (such as the voice server).
  • the two parties can also negotiate the packet characteristics of service packets.
  • the ONU can extract the packet characteristics and set the packet characteristics that need to wake up the ONU through the foregoing implementation manner.
  • the ONU cannot actively extract the packet characteristics of the service packet. Therefore, the ONU user interface or the factory-customized setting can be used to wake up the message characteristics of the ONU.
  • the packet features that are set on the ONU that need to wake up the ONU include the packet characteristics of the voice service and the packet characteristics of the video service.
  • S302 The ONU sends a message feature notification message to the OLT.
  • the ONU After the ONU sets the packet feature of the packet that needs to wake up the ONU, the ONU sends a packet feature notification message to the OLT to indicate that the packet feature is set.
  • the ONU sends a message feature notification message to the OLT through a newly added management entity.
  • the message feature notification message is an AVC (Attribute Value Change) message, where the attribute index field in the AVC message indicates that the message feature item setting in the message feature table is completed.
  • AVC Attribute Value Change
  • the ONU sends a message feature notification message to the OLT by extending the OAM message.
  • the Branch field and the Leaf field in the OAM message indicate that the attribute of the message is a private extension, where the values of the Branch field and the Leaf field are both Custom settings and the settings are unique.
  • the message carries a field indicating that the ONU sets the packet feature completion, but the specific content of the packet feature may not be carried in the message. Specifically, for example, the number of service types indicated by the ONU that need to wake up the ONU packet feature may be carried. N.
  • the OLT sends a message feature request message to the ONU.
  • the OLT sends a message feature request message to the ONU to query the message feature of the ONU that needs to wake up the ONU.
  • the OLT sends a message of the get or get next type to the ONU to request the packet characteristics of the ONU that need to wake up the ONU.
  • the message feature request message sent by the OLT to the ONU is implemented by extending the OAM message, where the extended operation code in the message indicates that the message is an Extended Get Request message sent by the OLT to the ONU, a Branch field and a Leaf field. Indicates that the attribute of the message is a private extension.
  • the values of the Branch field and the Leaf field are both custom settings, and the set value is unique.
  • S304 The ONU sends a message feature return message to the OLT.
  • the message feature return message sent by the ONU to the OLT carries the message feature of the ONU that needs to wake up the ONU, and the OLT performs packet feature configuration according to the received message feature.
  • the packet characteristics of the OLT that need to wake up the ONU include the packet characteristics of the voice service and the packet characteristics of the video service.
  • the ONU sends a message to the OLT.
  • the message is returned by the newly added management entity.
  • the message returned by the ONU to the OLT is a get response type message.
  • the message carries a message feature table, and each entry in the message feature table represents a value of a message feature.
  • the ONU sends a message feature return message to the OLT by extending the OAM message.
  • the extended operation code of the message indicates that the message is an Extended Get Response message sent by the ONU to the OLT
  • the Branch field and the Leaf field indicate The attribute of the message is a private extension
  • the values of the Branch field and the Leaf field are both custom settings.
  • Set and the set value is unique.
  • the message carries a message feature table, and each entry in the message feature table represents a value of a text feature.
  • the packet feature table carried in the message feature return message may include one or more packet feature types that need to wake up the ONU, and each message feature type indicates a service. Types of.
  • S305 The OLT and/or the ONU detect the packet feature of the current service packet, and trigger a wakeup event.
  • the service packet is transparently transmitted on the OLT or the ONU.
  • the OLT detects the packet characteristics of the current service packet. If the packet characteristics of the current service packet are detected as OLT.
  • the FWI wakeup event is triggered when the packet features of the ONU are required to be awake in the S304.
  • the ONU detects the packet characteristics of the current service packet. If the packet feature of the current service packet is detected, the ONU is set in S301. When the message feature of the ONU needs to be awake, the LWI wakeup event is triggered.
  • the OLT when the OLT triggers the FWI wakeup event or the ONU triggers the LWI wakeup event, or the OLT and the ONU simultaneously trigger the wakeup event, the ONU wakes up from the power save mode.
  • the ONU needs to wake up the ONU packet feature, and configures the configured packet feature to the OLT.
  • the OLT or the ONU detects the packet feature of the current service packet.
  • a wakeup event is triggered when the message feature of the ONU needs to be woken up.
  • the packet characteristics of the ONU that are required to be awake are used as the triggering conditions for the ONU to ensure that the ONU can wake up in time in the initial traffic rate of the service and meet the high QoS requirements of the service.
  • FIG. 4 is a signaling interaction diagram of a method for waking up an optical network unit ONU in a passive optical network PON according to an embodiment of the invention.
  • the embodiment is applied to the scenario of the bridged ONU. Since the bridged ONU cannot actively extract the packet characteristics of the service packet, the packet feature of the ONU needs to be set in advance on the user interface of the OLT, and the configured packet feature is configured. ONU, and the preset packet characteristics that need to wake up the ONU as the ONU energy-saving wake-up Triggering conditions.
  • the OLT configures a packet feature for the ONU by adding a management entity.
  • the OLT configures the packet feature for the ONU by extending the OAM message.
  • S401 Set, by using a user interface of the OLT, a message feature that needs to wake up the ONU.
  • the message feature that needs to wake up the ONU is set on the user interface of the OLT, which may be set at the time of leaving the factory or set by the operator according to the service opened by the user.
  • the packet feature may include the following: SVLAN description, VLAN ID, 802.1p, Ethernet packet type, IP packet DSCP value, TCP port number, and UDP port, which are not described here.
  • the packet features set on the OLT that need to wake up the ONU include the packet characteristics of the voice service and the packet characteristics of the video service.
  • the OLT sends a message feature configuration message to the ONU.
  • the packet feature configuration message sent by the OLT to the ONU carries the packet feature that needs to wake up the ONU.
  • the characteristics of the packet that the OLT needs to wake up the ONU carried in the configuration message sent by the OLT to the ONU include the packet feature of the voice service and the packet feature of the video service.
  • the OLT sends a packet feature configuration message to the ONU through the newly added management entity.
  • the packet feature configuration message sent by the OLT to the ONU is a set type message, and the message carries the packet feature table and the message. The value of each entry in the feature table that represents a message feature.
  • the OLT sends a message feature configuration message to the ONU by extending the OAM message.
  • the extended operation code in the message indicates that the message is an Extended Set Request message sent by the OLT to the ONU
  • the Branch field and the Leaf field indicate that the message is a private extension
  • the values of the Branch field and the Leaf field are both custom settings, and
  • the setting value is unique.
  • the OAM message carries a packet feature table, and each packet feature table Each entry represents the value of a message feature.
  • the packet feature table carried in the packet feature configuration message may include one or more packet feature types that need to wake up the ONU, and each packet feature type indicates a service. Types of.
  • S403 The ONU returns a configuration packet feature response message to the OLT.
  • the ONU performs the packet feature configuration based on the received packet characteristics. After the configuration succeeds, the ONU returns a packet feature response message, indicating that the packet feature is successfully configured.
  • the message response message returned by the ONU to the OLT is a set response type message, indicating the result of the configuration of the message by the ONU, including the configuration success or the configuration failure.
  • the ONU returns a message feature response message to the OLT by extending the OAM message.
  • the extended operation code in the message indicates that the message is an Extended Set Response message sent by the ONU to the OLT
  • the Branch field and the Leaf field indicate that the message is a private extension
  • the values of the Branch field and the Leaf field are both custom settings, and
  • the setting value is unique.
  • the OAM message also carries the result of the feature of the ONU configuration packet, including the configuration succeeded or the configuration fails.
  • S404 The OLT and/or the ONU detect a packet feature of the current service packet, and trigger a wakeup event.
  • the service packet is transparently transmitted on the OLT or the ONU.
  • the OLT detects the packet characteristics of the current service packet. If the packet characteristics of the current service packet are detected as OLT.
  • the SWI is configured to wake up the ONU packet, and the FWI wakeup event is triggered.
  • the ONU detects the packet characteristics of the current service packet. If the packet characteristics of the current service packet are detected as required in S403, the ONU needs to be woken up.
  • the LWI wakeup event is triggered when the message characteristics are met.
  • the OLT when the OLT triggers the FWI wakeup event or the ONU triggers the LWI wakeup event, or the OLT and the ONU simultaneously trigger the wakeup event, the ONU wakes up from the power save mode.
  • the OLT needs to wake up the message characteristics of the ONU, and the settings are set.
  • the packet feature is configured to the ONU.
  • the OLT or the ONU detects the packet characteristics of the service packet.
  • the wakeup event is triggered.
  • FIG. 5 is an exemplary flowchart of a method for waking up an optical network unit ONU of a passive optical network PON according to an embodiment of the invention.
  • the method may be performed by an optical line terminal OLT, and the following steps are performed:
  • the optical line terminal OLT receives a service packet corresponding to the ONU in the energy-saving mode, where the service packet carries a packet feature, and the packet feature indicates a service type of the service packet.
  • the power saving mode includes a periodic sleep mode in which the ONU cyclically switches between a conscious sleep state and a sleep state, and the ONU receives the module and the sending module in an open state in an conscious sleep state, the ONU The receiving module and the transmitting module are in the off state when in the sleep state.
  • the energy-saving mode also includes a hiccup mode in which the ONU cyclically switches between a conscious hiccup state and a snooze state, and the ONU receives the module and the transmit module in an open state in an conscious hiccup state, and the ONU transmits in the snoop state.
  • the module is in the off state and the receiving module is in the open state.
  • the OLT receives the service message of the ONU in the energy-saving mode.
  • the OLT receives a service packet sent from the network side device to the ONU in the power saving mode.
  • the service type includes voice service, data service, and video service.
  • the packet features include VLAN ID, 802.1p, Ethernet packet type, IP packet DSCP value, and TCP port number.
  • the UDP port and the like are described in detail in the first embodiment in the specific embodiment of the service type, and are not described here.
  • S502 The OLT detects a packet feature of the service packet.
  • the OLT detects the packet characteristics of the received service packet, and when it detects that the packet feature of the service packet is a packet feature that needs to wake up the ONU, triggers a wakeup event, and wakes up to send or receive the service packet.
  • the ONU of the text the ONU wakes up from the energy saving mode.
  • the energy saving mode in which the ONU is in includes a conscious sleep state in the periodic sleep mode, and a conscious snoring state and a listening state in the snoring mode.
  • the receiver and transmitter of the ONU optical module are in the off state.
  • the OLT cannot directly wake up the ONU, and can wake up when the ONU switches to the conscious sleep state.
  • the OLT-triggered wake-up event includes a GTC (GPON Transmission Convergence) layer flag bit forcibly awakening the flag FWI.
  • the characteristics of the ONU packet that needs to be awake on the OLT may include the packet characteristics of the voice service.
  • the setting of the packet feature that needs to be awake on the OLT on the OLT includes two types: one is that the ONU sets the packet feature that needs to wake up the ONU and sends the packet to the OLT, and the OLT performs packet feature configuration, where The specific implementation process is described in detail in S301-S304, and will not be described here; the other is through the user interface setting or factory setting of the OLT.
  • the preset packet feature can be used as a trigger condition for the OLT to wake up the ONU, which ensures that the ONU can wake up in time in the case of the initial traffic rate of the service, and meet the high QoS requirements of the service.
  • FIG. 6 is an exemplary flowchart of a method for waking up an optical network unit ONU of a passive optical network PON according to an embodiment of the invention.
  • the method can be performed by the optical network unit ONU.
  • the ONU is in the energy saving mode, the following steps are performed:
  • the service packet of the service is transparently transmitted on the ONU.
  • the ONU can receive the service packet from the OLT and receive the service packet from the user side.
  • the packet header carries the packet characteristics indicating the service type.
  • the service type includes the voice service, the data service, and the video service.
  • the packet features include the VLAN ID, 802.1p, Ethernet packet type, IP packet DSCP value, and TCP port. The specific implementation manner of the service type indicating the service type is described in detail in the first embodiment, and is not described here.
  • the energy saving mode of the ONU includes a conscious sleep state, a sleeping state, and a conscious snoring state and a listening state in the snoring mode, wherein the ONU can receive the user from the user while in the sleeping state.
  • Side triggered message is a conscious sleep state, a sleeping state, and a conscious snoring state and a listening state in the snoring mode, wherein the ONU can receive the user from the user while in the sleeping state.
  • the ONU detects a packet feature of the service packet.
  • the ONU when the ONU is in the energy-saving mode, the ONU detects the packet characteristics of the received service packet. When the packet characteristics of the detected service packet are the characteristics of the packet that needs to wake up the ONU, the ONU triggers the wakeup event. Wake up in power save mode.
  • the wakeup event triggered by the ONU includes the local wakeup indicator LWI.
  • the ONU triggers the LWI wakeup event if the sending module is in the off state, it will be forced to open and send an SR (Awake) message to the OLT, and the OLT sends an SA (OFF) message to the ONU. After the ONU wakes up from the power-saving mode, it is in the active mode. In the active mode, the receiving module and the transmitting module of the ONU remain open.
  • the packet characteristics of the ONU that are required to wake up the ONU include the packet characteristics of the voice service and the packet characteristics of the video service.
  • the setting of the packet characteristics of the ONU that needs to be awake in the ONU is as follows: one is to set the packet characteristics of the ONU to be sent to the ONU through the user interface of the OLT, and the ONU performs packet feature configuration.
  • the specific implementation process is described in detail in S401-S403, and is not described here.
  • the other is that the ONU sets the packet characteristics that need to wake up the ONU, including the specific implementation manner as described in S301.
  • the above technical solution can be used as a trigger condition for the ONU to wake up from the energy-saving mode of the ONU, and ensure that the ONU can wake up in time in the initial traffic rate of the service, and meet the high QoS of the service. Claim.
  • FIG. 7 is a schematic diagram showing the logical structure of an optical line terminal OLT according to an embodiment of the invention. As shown in FIG. 7, the OLT includes:
  • the receiving unit 701 is configured to receive a service packet corresponding to the ONU in the energy-saving mode, where the service packet carries a packet feature, and the packet feature indicates a service type of the service packet.
  • the detecting unit 702 is configured to detect a message feature of the service packet.
  • the waking unit 703 is configured to wake up the ONU in the power saving mode when the message feature is a preset message feature that needs to wake up the ONU.
  • the packet feature configuration unit is configured to receive the preset message feature of the ONU that needs to be awake from the ONU, and perform packet feature configuration, or set the preset packet that needs to wake up the ONU. feature.
  • the preset packet feature can be used as a trigger condition for the OLT to wake up the ONU, which ensures that the ONU can wake up in time in the case of the initial traffic rate of the service, and meet the high QoS requirements of the service.
  • FIG. 8 is a schematic diagram showing the logical structure of an optical network unit ONU according to an embodiment of the invention. As shown in Figure 8, the ONU includes:
  • the receiving unit 801 is configured to receive a service packet, where the service packet carries a packet feature.
  • the packet feature indicates a service type of the service packet;
  • the detecting unit 802 is configured to detect a packet feature of the service packet.
  • the waking unit 803 is configured to: when the message feature is a preset message feature that needs to wake up the ONU, the ONU wakes up from the power saving mode.
  • the message feature setting unit is further configured to set the preset message feature that needs to wake up the ONU, or to receive a preset message feature from the OLT that needs to wake up the ONU and report the message Text feature configuration.
  • the above technical solution can be used as a trigger condition for the ONU to wake up from the energy-saving mode of the ONU, and ensure that the ONU can wake up in time in the initial traffic rate of the service, and meet the high QoS of the service. Claim.
  • FIG. 9 is a schematic diagram showing the logical structure of a passive optical network PON system according to an embodiment of the invention. As shown in FIG. 9, the system includes an optical line terminal OLT 901 and an optical network unit ONU 902.
  • the OLT 901 is configured to receive a service packet corresponding to the ONU 902 in the energy-saving mode, where the service packet carries a packet feature, the packet feature indicates a service type of the service packet, and the OLT 901 is configured to detect
  • the message feature of the service packet is: when the packet feature of the service packet is a preset packet feature that needs to wake up the ONU 902, the ONU 902 in the energy saving mode is awake;
  • ONU902 for waking up from power save mode.
  • the ONU 902 is configured to receive a service packet, where the service packet carries a packet feature, the packet feature indicates a service type of the service packet, and the ONU 902 is configured to detect a packet feature of the service packet. And sending a wakeup indication request to the OLT 901 when the packet feature of the service packet is a preset packet feature that needs to wake up the ONU 902;
  • the OLT 901 is configured to receive a wakeup indication of the ONU 902, and instruct the ONU 902 to wake up from the power save mode.
  • the preset packet feature can be used as a trigger condition for the OLT to wake up the ONU or the ONU to actively wake up from the energy-saving mode, without determining the wake-up threshold, and ensuring the ONU at the traffic rate in the initial phase of the service. It can also wake up in time while meeting the high QoS requirements of the service.
  • FIG. 10 is a schematic structural diagram of a computer device 1000 of a passive optical network PON according to an embodiment of the invention.
  • the computer device 1000 includes a processor 1001, a memory 1002, an input/output interface 1003, a communication interface 1004, and a bus 1005.
  • the processor 1001, the memory 1002, the input/output interface 1003, and the communication interface 1004 implement a communication connection with each other through the bus 1005.
  • the processor 1001 may be a general-purpose central processing unit (CPU), a microprocessor, an application specific integrated circuit (ASIC), or at least one integrated circuit for executing related programs to implement the present invention.
  • CPU central processing unit
  • ASIC application specific integrated circuit
  • the memory 1002 may be a read only memory (ROM), a static storage device, a dynamic storage device, or a random access memory (RAM).
  • the memory 1002 can store an operating system and other applications.
  • the program code for implementing the technical solution provided by the embodiment of the present invention is saved in the memory 1002 and executed by the processor 1001.
  • the input/output interface 1003 is for receiving input data and information, and outputting data such as an operation result.
  • Communication interface 1004 enables communication between computer device 1000 and other devices or communication networks using transceivers such as, but not limited to, transceivers.
  • Bus 1005 can include a path for communicating information between various components of computer device 1000 (e.g., processor 1001, memory 1002, input/output interface 1003, and communication interface 1004).
  • the OLT receives the service packet corresponding to the ONU in the energy-saving mode through the communication interface 1004, where the service packet carries the packet feature, and the packet feature indicates the service type of the service packet;
  • the OLT executes the code stored in the memory 1002 by the processor 1001, and implements the packet feature of the service packet.
  • the packet feature of the service packet is a preset packet feature that needs to wake up the ONU, the OLT wakes up.
  • the ONU in the energy saving mode.
  • the ONU receives the service packet through the communication interface 1004, where the service packet carries the packet feature, and the packet feature indicates the service type of the service packet; the ONU is saved by the processor 1001.
  • the code of the memory 1002 is configured to detect a packet feature of the service packet.
  • the packet feature of the service packet is a preset packet feature that needs to wake up the ONU, the ONU wakes up from the energy saving mode.
  • computer device 1000 shown in FIG. 10 only shows the processor 1001, the memory 1002, the input/output interface 1003, the communication interface 1004, and the bus 1005, those skilled in the art should understand in the specific implementation process.
  • Computer device 1000 also contains other devices necessary to achieve proper operation.
  • computer device 1000 may also include hardware devices that implement other additional functions, depending on the particular needs.
  • computer device 1000 may also only include the components necessary to implement embodiments of the present invention, and does not necessarily include all of the devices shown in FIG.
  • the preset packet feature can be used as a trigger condition for the OLT to wake up the ONU or the ONU to actively wake up from the energy-saving mode, thereby ensuring that the ONU can wake up in time under the traffic rate of the initial phase of the service, and simultaneously Meet the high QoS requirements of the business.
  • the GPON protocol and the EPON protocol are taken as an example, but the invention is not limited thereto.
  • other types of protocols may be used in the network, and the technical solution of the present invention may also be used to implement the report.
  • the character feature is used as a trigger condition for the ONU to wake up from the energy-saving mode, and will not be described here.
  • aspects of the present invention, or possible implementations of various aspects may be embodied as a system, method, or computer program product.
  • aspects of the invention, or possible implementations of various aspects may take the form of an entirely hardware embodiment, an entirely software embodiment (including firmware, resident software, etc.) or a combination of software and hardware aspects.
  • aspects of the invention, or possible implementations of various aspects may take the form of a computer program product, which is a computer readable program code stored in a computer readable medium.
  • the computer readable medium can be a computer readable signal medium or a computer readable storage medium.
  • the computer readable storage medium includes, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing, such as random access memory (RAM), read only memory (ROM), Erase programmable read-only memory (EPROM or flash memory), optical fiber, portable read-only memory (CD-ROM).
  • the processor in the computer reads the computer readable program code stored in the computer readable medium such that the processor is capable of performing the various functional steps specified in each step of the flowchart, or a combination of steps; A device that functions as specified in each block, or combination of blocks.
  • the computer readable program code can execute entirely on the user's computer, partly on the user's computer, as a separate software package, partly on the user's computer and partly on the remote computer, or entirely on the remote computer or server.
  • the functions noted in the various steps in the flowcharts or in the blocks in the block diagrams may not occur in the order noted. For example, two steps, or two blocks, shown in succession may be executed substantially concurrently or the blocks may be executed in the reverse order.

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Abstract

本发明实施例公开了一种无源光网络中唤醒光网络单元的方法，包括：光线路终端OLT接收对应于处于节能模式的ONU的业务报文，所述业务报文携带报文特征，所述报文特征指示所述业务报文的业务类型；所述OLT检测所述业务报文的报文特征；当所述业务报文的报文特征为预设的需要唤醒ONU的报文特征时，所述OLT唤醒所述处于节能模式的ONU。根据本发明实施例提供的技术方案，可实现ONU在业务初始阶段流量速率小的情况下能够及时地从节能模式中唤醒，满足了业务的高QoS要求。

Description

一种无源光网络中唤醒光网络单元的方法、设备和系统 技术领域
本发明涉及光通信领域，尤其涉及一种无源光网络中唤醒光网络单元的方法、设备和系统。
背景技术
与电缆传输技术相比较，光纤传输技术具有容量大、损耗小、防电磁干扰能力强等优势，因此，随着光纤传输成本的逐步下降，接入网的光纤化是必然的发展趋势。代表着“最后一公里”部分的接入网段，有超低成本、结构简单以及方便实现等要求，这给技术实现带来了很大的挑战，而PON(Passive Optical Network，无源光网络)采用了无源器件，是目前实现宽带光接入网最有潜力的技术。从承载的内容来分类，PON技术主要包括APON(Asynchronous Transfer Mode Passive Optical Network，异步传输模式无源光网络)、EPON(Ethernet Passive Optical Network，以太网无源光网络)以及GPON(Gigabit Passive Optical Network，吉比特无源光网络)等。
国际电信联盟远程通信标准化组织一直在探索在PON范围内减少能量消耗的解决方案，这些节能解决方案能够改善使用电池供电的设备的性能，并且能在整体上节约能量，减少二氧化碳的排放。随着PON的普及，所部署的ONU数量也增加了，因此，PON节能解决方案的实质为减少ONU的功耗。
标准中没有定义ONU处于节能模式时如何触发唤醒事件，业界通用的技术是采用PON口流量检测方法来触发唤醒事件。具体地，ONU处于节能模式时，ONU检测PON口的接收和发送流量，流量速率大于某个门限值则触发唤醒事件；OLT同时检测该ONU的PON口的接收和发送流量，流量速率大于某个门限值则触发唤醒事件。
通用的PON口流量检测方法存在以下缺陷：
1)有的业务对延迟时间要求很严格，PON口流量检测需要定期 采样，不能立即唤醒，无法满足业务的高QoS(Quality of Service，服务质量)要求；
2)配置PON口流量检测方法中门限值大小较困难，需要结合具体的网络情况来分析和计算；
3)有的业务初始阶段流量速率小，业务在信令交互阶段，不能达到唤醒的门限值，导致ONU不能及时唤醒。
发明内容
有鉴于此，本发明实施例提供了一种无源光网络中唤醒光网络单元的方法、设备和系统，以解决在业务对延迟时间要求高或者业务初始阶段流量速率小的情况下，ONU不能被及时唤醒的问题。
第一方面，本发明实施例提供了一种无源光网络PON中唤醒光网络单元ONU的方法，包括：光线路终端OLT接收对应于处于节能模式的ONU的业务报文，所述业务报文携带报文特征，所述报文特征指示所述业务报文的业务类型；所述OLT检测所述业务报文的报文特征；当所述业务报文的报文特征为预设的需要唤醒ONU的报文特征时，所述OLT唤醒所述处于节能模式的ONU。
结合第一方面的实现方式，在第一方面第一种可能的实现方式中，所述预设的需要唤醒ONU的报文特征包括：指示语音业务的报文特征和/或指示视频业务的报文特征。
结合第一方面、或第一方面第一种可能的实现方式，在第一方面第二种可能的实现方式中，所述节能模式包括ONU的发送模块为打开状态，所述OLT接收对应于处于节能模式的ONU的业务报文包括：所述处于节能模式的ONU处于发送模块为打开状态时，所述OLT接收所述处于节能模式的ONU的业务报文。
结合第一方面、或第一方面第一种至第二种任一可能的实现方式，在第一方面第三种可能的实现方式中，所述OLT接收对应于处于节能模式的ONU的业务报文包括：所述OLT接收从网络侧设备发 送给所述处于节能模式的ONU的业务报文。
结合第一方面、或第一方面第一种至第三种任一可能的实现方式，在第一方面第四种可能的实现方式中，所述节能模式包括ONU的接收模块为打开状态，所述OLT唤醒所述处于节能模式的ONU包括：所述处于节能模式的ONU处于接收模块为打开状态时，所述OLT唤醒所述处于节能模式的ONU。
结合第一方面、或第一方面第一种至第四种任一可能的实现方式，在第一方面第五种可能的实现方式中，所述OLT接收对应于处于节能模式的ONU的业务报文之前，所述方法包括：所述OLT接收来自ONU的所述预设的需要唤醒ONU的报文特征。
结合第一方面、或第一方面第一种至第五种任一可能的实现方式，在第一方面第六种可能的实现方式中，所述OLT接收对应于处于节能模式的ONU之前，包括：所述OLT设置所述预设的需要唤醒ONU的报文特征。
结合第一方面、或第一方面第一种至第六种任一可能的实现方式，在第一方面第七种可能的实现方式中，所述节能模式包括周期性睡眠模式，所述周期性睡眠模式中，所述ONU在有意识的睡眠状态和睡着状态之间循环切换，所述ONU在有意识的睡眠状态时接收模块和发送模块为打开状态，所述ONU在所述睡着状态时接收模块和发送模块为关闭状态。
结合第一方面、或第一方面第一种至第七种任一可能的实现方式，在第一方面第八种可能的实现方式中，所述节能模式包括打盹模式，所述打盹模式中，所述ONU在有意识的打盹状态和侦听状态之间循环切换，所述ONU在有意识的打盹状态时接收模块和发送模块为打开状态，所述ONU在侦听状态时发送模块为关闭状态，接收模块为打开状态。
结合第一方面、或第一方面第一种至第八种任一可能的实现方 式，在第一方面第九种可能的实现方式中，所述OLT唤醒所述处于节能模式的ONU，具体包括：所述OLT通过强制唤醒标示FWI指示所述ONU从节能模式中唤醒。
结合第一方面、或第一方面第一种至第九种任一可能的实现方式，在第一方面第十种可能的实现方式中，所述OLT唤醒所述处于节能模式的ONU之后，所述ONU处于活跃模式，在所述活跃模式时，所述ONU的接收模块和发送模块保持打开状态。
结合第一方面、或第一方面第一种至第十种任一可能的实现方式，在第一方面第十一种可能的实现方式中，所述报文特征包括：虚拟局域网标识VLAN ID、IP报文差分服务代码点DSCP值、传输控制协议TCP端口号、用户数据报协议UDP端口号、802.1p优先级中至少任意一种。
第二方面，本发明实施例提供了一种无源光网络PON中光网络单元ONU唤醒的方法，包括：ONU处于节能模式时，接收业务报文，所述业务报文携带报文特征，所述报文特征指示所述业务报文的业务类型；所述ONU检测所述业务报文的报文特征；当所述报文特征为预设的需要唤醒ONU的报文特征时，所述ONU从所述节能模式中唤醒。
结合第二方面的实现方式，在第二方面第一种可能的实现方式中，所述预设的需要唤醒ONU的报文特征包括：指示语音业务的报文特征和/或指示视频业务的报文特征。
结合第二方面、或第二方面第一种可能的实现方式，在第二方面第二种可能的实现方式中，所述ONU处于节能模式之前，包括：所述ONU设置所述预设的需要唤醒ONU的报文特征。
结合第二方面、或第二方面第一种至第二种任一可能的实现方式，在第二方面第三种可能的实现方式中，所述ONU处于节能模式之前，包括：所述ONU接收来自OLT的所述预设的需要唤醒ONU 的报文特征。
结合第二方面、或第二方面第一种至第三种任一可能的实现方式，在第二方面第四种可能的实现方式中，所述ONU处于节能模式时，接收业务报文包括：所述ONU接收来自用户侧的业务报文。
结合第二方面、或第二方面第一种至第四种任一可能的实现方式，在第二方面第五种可能的实现方式中，所述节能模式包括ONU的接收模块为打开状态，所述ONU处于节能模式时，接收业务报文包括：所述ONU接收来自网络侧设备的业务报文。
结合第二方面、或第二方面第一种至第五种任一可能的实现方式，在第二方面第六种可能的实现方式中，所述ONU从节能模式中唤醒，具体包括：所述ONU通过本地唤醒标示LWI指示所述ONU从节能模式中唤醒。
结合第二方面、或第二方面第一种至第六种任一可能的实现方式，在第二方面第七种可能的实现方式中，所述ONU从节能模式中唤醒之后，所述ONU处于活跃模式，在所述活跃模式时，所述ONU的接收模块和发送模块保持打开状态。
结合第二方面、或第二方面第一种至第七种任一可能的实现方式，在第二方面第八种可能的实现方式中，所述报文特征包括：虚拟局域网标识VLAN ID、IP报文差分服务代码点DSCP值、传输控制协议TCP端口号、用户数据报协议UDP端口号、802.1p优先级中至少任意一种。
第三方面，本发明实施例提供了一种光线路终端OLT，所述OLT包括：接收单元，用于接收对应于处于节能模式的ONU的业务报文，所述业务报文携带报文特征，所述报文特征指示所述业务报文的业务类型；检测单元，用于检测所述业务报文的报文特征；唤醒单元，用于当所述业务报文的报文特征为预设的需要唤醒ONU的报文特征时，所述OLT唤醒所述处于节能模式的ONU。
结合第三方面的实现方式，在第三方面第一种可能的实现方式中，所述预设的需要唤醒ONU的报文特征包括：语音业务的报文特征和/或指示视频业务的报文特征。
结合第三方面、或第三方面第一种可能的实现方式，在第三方面第二种可能的实现方式中，还包括：报文特征配置单元，用于接收来自ONU的所述预设的需要唤醒ONU的报文特征。
结合第三方面、或第三方面第一种至第二种任一可能的实现方式，在第三方面第三种可能的实现方式中，还包括：报文特征设置单元，用于设置所述预设的需要唤醒ONU的报文特征。
结合第三方面、或第三方面第一种至第三种任一可能的实现方式，在第三方面第四种可能的实现方式中，所述唤醒单元，用于通过强制唤醒标示FWI指示所述ONU从所述节能模式中唤醒。
结合第三方面、或第三方面第一种至第四种任一可能的实现方式，在第三方面第五种可能的实现方式中，所述报文特征包括：虚拟局域网标识VLAN ID、IP报文差分服务代码点DSCP值、传输控制协议TCP端口号、用户数据报协议UDP端口号、802.1p优先级中至少任意一种。
第四方面，本发明实施例提供了一种光网络单元ONU，ONU包括：接收单元，用于接收业务报文，所述业务报文携带报文特征，所述报文特征指示所述业务报文的业务类型；检测单元，用于检测所述业务报文的报文特征；唤醒单元，用于当所述报文特征为预设的需要唤醒ONU的报文特征时，所述ONU从节能模式中唤醒。
结合第四方面的实现方式，在第四方面第一种可能的实现方式中，所述预设的需要唤醒ONU的报文特征包括：语音业务的报文特征和/或视频业务的报文特征。
结合第四方面、或第四方面第一种可能的实现方式，在第四方面第二种可能的实现方式中，还包括：报文特征设置单元，用于设置所 述预设的需要唤醒ONU的报文特征。
结合第四方面、或第四方面第一种至第二种任一可能的实现方式，在第四方面第三种可能的实现方式中，还包括：报文特征配置单元，用于接收来自所述OLT的预设的需要唤醒ONU的报文特征。
结合第四方面、或第四方面第一种至第三种任一可能的实现方式，在第四方面第四种可能的实现方式中，所述唤醒单元，用于通过本地唤醒标示LWI指示从节能模式中唤醒。
结合第四方面、或第四方面第一种至第四种任一可能的实现方式，在第四方面第五种可能的实现方式中，所述报文特征包括：虚拟局域网标识VLAN ID、IP报文差分服务代码点DSCP值、传输控制协议TCP端口号、用户数据报协议UDP端口号、802.1p优先级中至少任意一种。
第五方面，本发明实施例提供了一种无源光网络PON唤醒光网络单元ONU的系统，其特征在于，系统包括：OLT和ONU，所述OLT，用于接收对应于处于节能模式的ONU的业务报文，所述业务报文携带报文特征，所述报文特征指示所述业务报文的业务类型；所述OLT，用于检测所述业务报文的报文特征，当所述业务报文的报文特征为预设的需要唤醒ONU的报文特征时，唤醒所述处于节能模式的ONU；所述ONU，用于从节能模式中唤醒。
第六方面，本发明实施例提供了一种无源光网络PON的光网络单元ONU唤醒的系统，其特征在于，系统包括：OLT和ONU，所述ONU，用于接收业务报文，所述业务报文携带报文特征，所述报文特征指示所述业务报文的业务类型；所述ONU，用于检测所述业务报文的报文特征，当所述业务报文的报文特征为预设的需要唤醒ONU的报文特征时，向OLT发送唤醒指示请求；所述OLT，用于接收所述ONU的唤醒指示，指示所述ONU从所述节能模式中唤醒。
第七方面，一种光线路终端OLT，包括：处理器、存储器、总线 和通信接口；存储器用于存储执行指令，处理器与存储器通过总线连接，当OLT运行时，处理器执行存储器存储的执行指令，以使OLT执行如第一方面及第一方面的任意一种可能的实现方式所述的方法。
第八方面，一种光网络单元ONU，包括：处理器、存储器、总线和通信接口；存储器用于存储执行指令，处理器与存储器通过总线连接，当ONU运行时，处理器执行存储器存储的执行指令，以使ONU执行如第二方面及第二方面的任意一种可能的实现方式所述的方法。
根据本发明实施例提供的技术方案，在OLT和ONU上预设需要唤醒ONU的指示业务报文的业务类型的报文特征，当OLT接收到业务报文时，OLT或ONU检测到业务报文的报文特征为预设的需要唤醒ONU的报文特征时，触发ONU从节能模式中唤醒，可实现将报文特征作为唤醒ONU的触发条件，无需确定唤醒的门限值，保证了ONU即使在业务初始阶段流量速率小的情况下也能够及时地唤醒，同时也能满足业务的高QoS要求。
附图说明
为了更清楚地说明本发明的实施例或现有技术中的技术方案，下面将对描述实施例时所使用的附图作简单的介绍。显而易见地，下面附图中描述的仅仅是本发明的一部分实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图和描述得到其他的附图或实施例，而本发明旨在涵盖所有这些衍生的附图或实施例。
图1是PON系统结构示意图；
图2是PON节能模式ONU的状态迁移示意图；
图3是实现本发明实施例的一种无源光网络PON中唤醒光网络单元ONU的方法的信令交互图；
图4是实现本发明实施例的一种无源光网络PON中唤醒光网络单元ONU的方法的信令交互图；
图5是实现本发明实施例的一种无源光网络PON中唤醒光网络单元ONU的方法的示范性流程图；
图6是实现本发明实施例的一种无源光网络PON中光网络单元ONU唤醒的方法的示范性流程图；
图7是实现本发明实施例的一种光线路终端OLT的逻辑结构示意图；
图8是实现本发明实施例的一种光网络单元ONU的逻辑结构示意图；
图9是实现本发明实施例一种无源光网络PON系统的逻辑结构示意图；
图10是实现本发明实施例的一种无源光网络PON的计算机设备的结构示意图。
具体实施方式
为了使本发明的目的、技术方案及优点更加清楚明白，以下结合附图及实施例，对本发明进行进一步详细说明。应当理解，此处所描述的具体实施例仅仅用以解释本发明，并不用于限定本发明。显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
实施例一
典型地，PON用于网络的“第一公里”，提供了服务供应商的中心局(CO)与用户驻地的连接。如图1所示，整个PON系统通常由位于中心局的光线路终端(OLT)和一系列处于用户驻地的光网络单元(ONU)构成，这些器件中间是由光纤、无源分光器或耦合器构成的光分配网络(ODN)。通常来说，“第一公里”是一个点对多点的网络，即一个中心局为一定数量的用户提供服务，例如，PON可以采用树状拓扑结构。其中，主干光纤将中心局的OLT连接到ODN中的无源分光器 或耦合器，通过一定数量的分支光纤，无源分光器可以将下行光信号分离并分配给用户，并且通过无源耦合器合成来自用户的上行光信号。
在整个PON系统中，ODN的存在使得PON系统出现共享介质的特征。下行链路为广播形式发送数据，OLT向所有ONU广播数据包。OLT向ONU发送时间窗口授权的消息帧中通常包含两个信息，允许ONU打开光模块发送的开始时间、允许ONU打开光模块发送的持续时间。OLT根据各ONU的带宽需求动态分配各个ONU的授权时间窗口，使得各个ONU的使用带宽可动态变化，并符合预设的带宽策略，这个计算和调度的过程称为DBA(Dynamically Bandwidth Assignment，动态带宽分配)算法。上行链路的流量传输相对较为复杂，为了避免上行数据发生冲突，在上行数据流采用时分多址技术(TDMA)方式，即由中心局的OLT对网络中各个ONU进行时间窗授权，授权不同的ONU在不同的时间段内发送上行数据，这样不同ONU的上行数据就不会产生冲突。因此，ONU按照OLT的控制要求传输数据。
OLT采用无源分光器将一路光信号分成多路光信号，并通过光纤与ONU连接，在具有高分光比的情况下，一个OLT对应ONU的数量非常庞大。因此，为了减少ONU的功耗，ONU有两种节能模式：周期性睡眠(Cyclic Sleep)模式和打盹(Doze)模式，图2所示为PON节能模式ONU的状态迁移示意图。
1)周期性睡眠模式
ONU在以下两个状态间循环切换：有意识的睡眠状态(Sleep Aware)和睡着状态(Asleep)。处于有意识的睡眠状态时，接收和发送双向的光模块等硬件器件都正常工作，此时不能节能。ONU处于睡着状态时，接收和发送双向的光模块等硬件器件都关闭，此时ONU能耗降低。
2)打盹模式
ONU在以下两个状态间循环切换：有意识的打盹状态(Doze Aware)和侦听状态(Listen)。处于有意识的打盹状态时，接收和发送双向的光模块等硬件器件都正常工作，此时不能节能。ONU处于侦听状态时，关闭发送方向的光模块等硬件器件，此时ONU能耗降低。
周期性睡眠模式通常发生在ONU未被用户使用的场景，比如晚上用户睡觉的时间段里，此时节省的能耗是较多的。打盹模式通常发生在用户只使用下行业务，不使用上行业务的场景，比如用户在看IPTV(交互式网络电视)组播的时间段里，此时节省的能耗相对小些。
当ONU进入节能模式后，按通常的做法，会采用PON口流量检测方式来触发唤醒事件，使ONU从节能模式中唤醒。由于ONU所支持的业务为多业务，典型的三网融合业务(Triple Play)包含的语音业务、数据业务、视频业务三种业务类型。其中，语音业务包括网络电话VOIP业务；数据业务包括基于计算机网络的带宽业务、基于有线电视网络的带宽业务等互联网业务；视频业务包括交互式网络电视IPTV业务、手机电视业务、数字电视业务等电视业务。在这些业务中，有的业务对延迟时间要求很严格，如IPTV业务的上行业务报文包含用户的频道选择信息，直接影响到用户的体验；有的业务初始阶段流量速率小，如VOIP业务，在业务初始阶段流量速率不能达到唤醒的门限值，影响用户体验。因此，在这些情况下，采用流量检测的方式导致ONU不能及时唤醒。针对这种情况，本发明实施例通过将OLT和ONU上预设的需要唤醒ONU的报文特征作为唤醒处于节能模式的ONU的触发条件，当OLT或ONU接收到业务报文，并且检测到业务报文的报文特征为需要唤醒ONU的报文特征时，触发节能唤醒事件，能够及时唤醒处于节能模式的ONU。这里以及其他实施例中提到的预设的需要唤醒ONU的报文特征可以是ONU上对应业务类型中，业务初始阶段流量速率小或业务QoS要求高的业务报文所携带的 报文特征。
具体地，报文特征可以指示业务类型，包括但不限于以下几种：VLAN ID、802.1p、以太报文类型、IP报文DSCP值和TCP端口号、UDP端口。具体地，VLAN ID和802.1p为标记帧(tagged Frame)中的字段，VLAN ID表示该数据帧所属的虚拟局域网，一般由运营商规划设定；802.1p表示数据帧的优先级；以太网报文类型为标准以太网帧，又称未标记帧(untagged Frame)的类型字段；IP报文的DSCP值指示数据报的优先级；TCP端口号、UDP端口包含源端口和目的端口，用于标识和区分源端设备和目的端设备的应用进程。每一种业务类型，如语音业务、数据业务、视频业务等可以通过在业务报文的报文头部设置上述报文特征中的一种或多种的组合来表示。
具体实施过程中，需要唤醒ONU的报文特征可以包括语音业务报文特征和视频业务报文特征。语音业务包括VOIP业务，视频业务包括IPTV业务。由于VOIP业务在业务初始阶段需要及时唤醒ONU，IPTV业务的上行业务报文包含用户的频道选择信息，也需要对ONU及时唤醒。对于每一种业务类型，业务报文的报文特征设置方式不唯一，通常是开发商或者运营商设定，例如，VLAN ID值为6，IP报文DSCP值为47，TCP端口号、UDP端口号为5060时，表示语音业务报文特征；VLAN ID值为4，802.1p优先级为7，IP报文DSCP值为56，表示该业务报文为视频业务报文特征；数据业务报文特征通常用VLAN ID和802.1p优先级、IP报文DSCP值表示，通常由运营商规划设定。
实施例二
图3是依据本发明一实施例的一种无源光网络PON中唤醒光网络单元ONU的方法信令交互图。本实施例中，ONU设置需要唤醒ONU的报文特征，并将需要唤醒ONU的报文特征配置给OLT，将预设的需要唤醒ONU的报文特征作为ONU节能唤醒的触发条件。具体地，在 GPON协议中，ONU通过新增管理实体的方式对OLT配置报文特征；在EPON协议中，ONU通过扩展OAM(Operation、Administration and Maintenance，操作、管理与维护)消息的方式来对OLT配置报文特征。
S301：ONU设置需要唤醒ONU的报文特征。
在语音、数据、视频等业务建立之前，这些业务都要通过业务管理通道来开通。ONU设置需要唤醒ONU的报文特征包括两种实施方式，一种是，对于网关型ONU，ONU与业务管理网元(例如iTMS或BMS)通信时，业务管理网元会将需要开通的业务的底层通道信息和QoS的规划信息下发给ONU，ONU可以从这些信息提取出所开通的每一种业务类型中业务报文的报文特征；另一方面，ONU与业务服务器通信(如语音服务器)进行信令交互时，双方也可以协商业务报文的报文特征。ONU可以通过上述的实施方式，提取出报文特征，并设置需要唤醒ONU的报文特征。另一种实施方式是，对于桥接型的ONU，由于ONU无法主动提取业务报文的报文特征，因此可以通过ONU的用户界面或出厂定制设置需要唤醒ONU的报文特征。具体地，ONU上设置的需要唤醒ONU的报文特征包括语音业务的报文特征和视频业务的报文特征。
S302：ONU向OLT发送报文特征通知消息。
ONU设置需要唤醒ONU的报文的报文特征完成后，向OLT发送报文特征通知消息，指示报文特征设置完成。
在GPON协议中，ONU向OLT发送报文特征通知消息是通过新增的管理实体来实现的。具体地，报文特征通知消息为AVC(Attribute Value Change，属性值变化)消息，其中，AVC消息中的属性索引字段指示报文特征表中报文特征项设置完成。
在EPON协议中，ONU向OLT发送报文特征通知消息是通过扩展OAM消息来实现的。具体地，OAM消息中Branch字段和Leaf字段表示该消息的属性为私有扩展，其中，Branch字段和Leaf字段的值均为 自定义设置，且设置值是唯一的。该消息中，携带指示ONU设置报文特征完成的字段，但报文特征的具体内容可以不携带在消息中，具体地，例如可以携带ONU设置的需要唤醒ONU的报文特征指示的业务类型数目N。
S303：OLT向ONU发送报文特征请求消息。
具体地，OLT向ONU发送报文特征请求消息请求查询ONU设置的需要唤醒ONU的报文特征。
在GPON协议中，OLT通过发送get或get next类型的消息给ONU请求获取ONU设置的需要唤醒ONU的报文特征。
在EPON协议中，OLT向ONU发送的报文特征请求消息通过扩展OAM消息来实现的，其中，该消息中扩展操作码表示该消息为OLT向ONU发送的Extended Get Request消息，Branch字段和Leaf字段表示该消息的属性为私有扩展，Branch字段和Leaf字段的值均为自定义设置，且设置值是唯一的。
S304：ONU向OLT发送报文特征返回消息。
ONU向OLT发送的报文特征返回消息携带ONU设置的需要唤醒ONU的报文特征，OLT根据接收到的报文特征进行报文特征配置。OLT配置的需要唤醒ONU的报文特征包括语音业务的报文特征和视频业务的报文特征。
在GPON协议中，ONU向OLT发送报文特征返回消息通过新增的管理实体实现，具体地，ONU向OLT发送的报文特征返回消息为get response类型消息。该消息中携带报文特征表，报文特征表中的每一表项代表一项报文特征的值。
在EPON协议中，ONU向OLT发送报文特征返回消息通过扩展OAM消息来实现，具体地，该消息的扩展操作码表示该消息为ONU向OLT发送的Extended Get Response消息，Branch字段和Leaf字段表示该消息的属性为私有扩展，Branch字段和Leaf字段的值均为自定义设 置，且设置值是唯一的。该消息中携带报文特征表，报文特征表中的每一表项代表一项文特征的值。
具体地，在EPON或GPON协议中，当报文特征返回消息携带的报文特征表中可以包含一种或多种需要唤醒ONU的报文特征类型，每一种报文特征类型指示一种业务类型。
S305：OLT和/或ONU检测当前业务报文的报文特征，触发唤醒事件。
具体实施过程中，当用户触发一个业务时，业务报文在OLT或ONU上透传，OLT对当前业务报文的报文特征进行检测，如果检测到当前业务报文的报文特征为OLT在S304中配置的需要唤醒ONU的报文特征时，则触发FWI唤醒事件；ONU对当前业务报文的报文特征进行检测，如果检测到当前业务报文的报文特征为ONU在S301中设置的需要唤醒ONU的报文特征时，则触发LWI唤醒事件。
具体实施过程中，当OLT触发FWI唤醒事件或ONU触发LWI唤醒事件、或OLT和ONU同时触发唤醒事件时，ONU从节能模式中唤醒。
本实施例中，通过ONU设置需要唤醒ONU报文特征，并将设置的报文特征配置给OLT，OLT或ONU检测当前业务报文的报文特征，当OLT或ONU检测到的报文特征为需要唤醒ONU的报文特征时，触发唤醒事件。将预设的需要唤醒ONU的报文特征作为唤醒ONU的触发条件，保证了ONU在业务初始阶段流量速率下的情况下也能及时唤醒，同时满足业务的高QoS要求。
实施例三
图4是依据本发明一实施例的一种无源光网络PON中唤醒光网络单元ONU的方法信令交互图。本实施例应用于桥接型ONU的场景，由于桥接型ONU无法主动提取业务报文的报文特征，可以在OLT的用户界面预先设置需要唤醒ONU的报文特征，将设置的报文特征配置给ONU，并将预设的需要唤醒ONU的报文特征作为ONU节能唤醒的 触发条件。具体地，在GPON协议中，OLT通过新增管理实体的方式对ONU配置报文特征；在EPON协议中，OLT通过扩展OAM消息的方式对ONU配置报文特征。
S401：通过OLT的用户界面设置需要唤醒ONU的报文特征。
考虑到ONU为用户端设备，如果在ONU上设置报文特征，需要工程技术人员上门服务，增加了服务成本，或者在ONU出厂时已经设置好，如果用户的业务需求发生变化时，修改设置比较麻烦。因此，在本发明实施例中，在OLT的用户界面上设置需要唤醒ONU的报文特征，可以是出厂时已经设置好或者运营商在使用的过程中根据用户开通的业务进行设置。具体地，报文特征可以包括S301描述的：VLAN ID、802.1p、以太报文类型、IP报文DSCP值和TCP端口号、UDP端口，此处不再赘述。具体地，OLT上设置的需要唤醒ONU的报文特征包括语音业务的报文特征和视频业务的报文特征。
S402：OLT向ONU发送报文特征配置消息。
具体实施过程中，OLT向ONU发送的报文特征配置消息中携带需要唤醒ONU的报文特征。具体地，OLT向ONU发送的配置消息中携带的需要唤醒ONU的报文特征包括语音业务的报文特征和视频业务的报文特征。
GPON协议中，OLT向ONU发送报文特征配置消息通过新增的管理实体实现，具体地，OLT向ONU发送的报文特征配置消息为set类型消息，该消息中携带报文特征表，报文特征表中的每一表项的代表一项报文特征的值。
EPON协议中，OLT向ONU发送报文特征配置消息通过扩展OAM消息来实现。具体地，该消息中的扩展操作码表示该消息为OLT向ONU发送的Extended Set Request消息，Branch字段和Leaf字段表示该消息为私有扩展，Branch字段和Leaf字段的值均为自定义设置，且设置值是唯一的。OAM消息中携带报文特征表，每个报文特征表中的 每一表项代表一项报文特征的值。
具体地，在EPON或GPON协议中，当报文特征配置消息携带的报文特征表中可以包含一种或多种需要唤醒ONU的报文特征类型，每一种报文特征类型指示一种业务类型。
S403：ONU向OLT返回配置报文特征响应消息。
ONU根据接收到的报文特征进行报文特征配置，配置成功后，返回报文特征响应消息，指示报文特征配置成功。
GPON协议中，ONU向OLT返回的报文特征响应消息为set response类型消息，指示ONU配置报文特征的结果，包括配置成功或配置失败。
EPON协议中，ONU向OLT返回报文特征响应消息通过扩展OAM消息来实现。具体地，该消息中的扩展操作码表示该消息为ONU向OLT发送的Extended Set Response消息，Branch字段和Leaf字段表示该消息为私有扩展，Branch字段和Leaf字段的值均为自定义设置，且设置值是唯一的。OAM消息中还携带ONU配置报文特征的结果，包括配置成功或配置失败。
S404：OLT和/或ONU检测当前业务报文的报文特征，触发唤醒事件。
具体实施过程中，当用户触发一个业务时，业务报文在OLT或ONU上透传，OLT对当前业务报文的报文特征进行检测，如果检测到当前业务报文的报文特征为OLT在S401设置的需要唤醒ONU的报文特征时，则触发FWI唤醒事件；ONU对当前业务报文的报文特征进行检测，如果检测到当前业务报文的报文特征为S403中配置的需要唤醒ONU的报文特征时，则触发LWI唤醒事件。
具体实施过程中，当OLT触发FWI唤醒事件或ONU触发LWI唤醒事件、或OLT和ONU同时触发唤醒事件时，ONU从节能模式中唤醒。
本实施例中，通过OLT设置需要唤醒ONU的报文特征，并将设置 的报文特征配置给ONU，OLT或ONU检测业务报文的报文特征，当OLT或ONU检测到的报文特征为需要唤醒ONU的报文特征时，触发唤醒事件。按用户的需求在OLT上设置需要唤醒ONU的报文特征，并将设置的报文特征作为唤醒ONU的触发条件，保证了ONU在业务初始阶段流量速率下的情况下也能及时唤醒，同时满足业务的高QoS要求。
实施例四
图5是依据本发明一实施例的无源光网络PON的唤醒光网络单元ONU的方法的示范性流程图。具体实施过程中，该方法可以由光线路终端OLT来执行，执行如下步骤：
S501：光线路终端OLT接收对应于处于节能模式的ONU的业务报文，所述业务报文携带报文特征，所述报文特征指示所述业务报文的业务类型。
当用户触发一个业务时，该业务的业务报文在OLT上透传。具体地，节能模式包括周期性睡眠模式，在周期性睡眠模式中，ONU在有意识的睡眠状态和睡着状态之间循环切换，ONU在有意识的睡眠状态时接收模块和发送模块为打开状态，ONU在睡着状态时接收模块和发送模块为关闭状态。节能模式还包括打盹模式，在打盹模式中，ONU在有意识的打盹状态和侦听状态之间循环切换，ONU在有意识的打盹状态时接收模块和发送模块为打开状态，ONU在侦听状态时发送模块为关闭状态，接收模块为打开状态。当处于节能模式的ONU处于发送模块打开的状态时，如有意识的睡眠状态、有意识的打盹状态和侦听状态，OLT接收处于节能模式的ONU的业务报文。或者，OLT接收从网络侧设备发送给处于节能模式的ONU的业务报文。
业务类型包括语音业务、数据业务、视频业务等，报文特征包括VLAN ID、802.1p、以太报文类型、IP报文DSCP值和TCP端口号、 UDP端口等，通过报文特征指示业务类型的具体实施方式在实施例一作出了详细的描述，在此不再赘述。
S502：所述OLT检测所述业务报文的报文特征。
S503：当所述业务报文的报文特征为预设的需要唤醒ONU的报文特征时，所述OLT唤醒处于节能模式的ONU。
具体实施过程中，OLT检测接收到的业务报文的报文特征，并且当检测到业务报文的报文特征为需要唤醒ONU的报文特征时，触发唤醒事件，唤醒发送或接收该业务报文的ONU，ONU从节能模式中唤醒。具体地，OLT唤醒ONU之前，ONU处于的节能模式包括周期性睡眠模式中的有意识的睡眠状态，和打盹模式中的有意识的打盹状态、侦听状态。由于ONU处于周期性的睡眠模式中的睡着状态时，ONU光模块的接收器和发送器都处于关闭状态，此时OLT无法直接唤醒ONU，等到ONU切换到有意识的睡眠状态时可进行唤醒。具体地，OLT触发的唤醒事件包括GTC(GPON Transmission Convergence，GPON传输汇聚)层标志位强制唤醒标示FWI。OLT唤醒处于节能模式的ONU之后，ONU处于活跃模式，在活跃模式时，ONU的接收模块和发送模块保持打开状态。
具体实施过程中，OLT上预设的需要唤醒ONU报文特征可以包括语音业务的报文特征。具体地，OLT上预设的需要唤醒ONU的报文特征的设置方式包括两种：一种是，由ONU设置需要唤醒ONU的报文特征并发送给OLT，OLT进行报文特征配置，其中，具体实施过程在S301-S304进行了详细的描述，在此不再赘述；另一种是，通过OLT的用户界面设置或出厂设置。
通过以上的技术方案，可实现将预设的报文特征作为OLT唤醒ONU的触发条件，保证了ONU在业务初始阶段流量速率下的情况下也能及时唤醒，同时满足业务的高QoS要求。
实施例五
图6是依据本发明一实施例的无源光网络PON的光网络单元ONU唤醒的方法的示范性流程图。该方法可由光网络单元ONU执行，ONU处于节能模式时，执行如下步骤：
S601：ONU处于节能模式时，接收业务报文，所述业务报文携带报文特征，所述报文特征指示所述业务报文的业务类型。
当用户触发一个业务时，该业务的业务报文在ONU上透传，ONU可以接收来自OLT的业务报文，还可以接收来自用户侧的业务报文。报文头部携带有指示业务类型的报文特征，业务类型包括语音业务、数据业务、视频业务等，报文特征包括VLAN ID、802.1p、以太报文类型、IP报文DSCP值和TCP端口号、UDP端口等，通过报文特征指示业务类型的具体实施方式在实施例一作出了详细的描述，在此不再赘述。具体地，ONU的节能模式包括周期性睡眠模式中的有意识的睡眠状态、睡着状态，和打盹模式中的有意识的打盹状态、侦听状态，其中，处于睡着状态时，ONU能够接收来自用户侧触发的报文。
S602：所述ONU检测所述业务报文的报文特征。
S603：当所述报文特征为预设的需要唤醒ONU的报文特征时，所述ONU从节能模式中唤醒。
具体实施过程中，ONU处于节能模式时，检测接收到的业务报文的报文特征，当检测到的业务报文的报文特征为需要唤醒ONU的报文特征时，ONU触发唤醒事件，从节能模式中唤醒。ONU触发的唤醒事件包括本地唤醒标示LWI。ONU触发LWI唤醒事件时，发送模块如果处于关闭状态，会被强制打开，并向OLT发送SR(Awake)消息，OLT向ONU发送SA(OFF)消息。ONU从节能模式中唤醒之后，处于活跃模式，在活跃模式时，ONU的接收模块和发送模块保持打开状态。
具体实施过程中，ONU上预设的需要唤醒ONU的报文特征包括语音业务的报文特征和视频业务的报文特征。
具体地，ONU中预设的需要唤醒ONU的报文特征的设置方式包括两种：一种是，通过OLT的用户界面设置需要唤醒ONU的报文特征并发送给ONU，ONU进行报文特征配置，其中，具体实施过程在S401-S403进行了详细的描述，在此不再赘述；另一种是，由ONU设置需要唤醒ONU的报文特征，包括如S301所述的具体实施方式。
通过以上的技术方案，可实现将预设的报文特征作为ONU从节能模式中唤醒的触发条件，保证了ONU在业务初始阶段流量速率下的情况下也能及时唤醒，同时满足业务的高QoS要求。
实施例六
图7是依据本发明一实施例的光线路终端OLT的逻辑结构示意图。如图7所示，OLT包括：
接收单元701，用于接收对应于处于节能模式的ONU的业务报文，所述业务报文携带报文特征，所述报文特征指示所述业务报文的业务类型；
检测单元702，用于检测所述业务报文的报文特征；
唤醒单元703，用于当所述报文特征为预设的需要唤醒ONU的报文特征时，唤醒所述处于节能模式的ONU。
可选地，还包括报文特征配置单元，用于接收来自ONU的所述预设的需要唤醒ONU的报文特征并进行报文特征配置，或者设置所述预设的需要唤醒ONU的报文特征。
通过以上的技术方案，可实现将预设的报文特征作为OLT唤醒ONU的触发条件，保证了ONU在业务初始阶段流量速率下的情况下也能及时唤醒，同时满足业务的高QoS要求。
实施例七
图8是依据本发明一实施例的光网络单元ONU的逻辑结构示意图。如图8所示，ONU包括：
接收单元801，用于接收业务报文，所述业务报文携带报文特征， 所述报文特征指示所述业务报文的业务类型；
检测单元802，用于检测所述业务报文的报文特征；
唤醒单元803，用于当所述报文特征为预设的需要唤醒ONU的报文特征时，所述ONU从节能模式中唤醒。
可选地，还包括报文特征设置单元，用于设置所述预设的需要唤醒ONU的报文特征，或者用于接收来自所述OLT的预设的需要唤醒ONU的报文特征并进行报文特征配置。
通过以上的技术方案，可实现将预设的报文特征作为ONU从节能模式中唤醒的触发条件，保证了ONU在业务初始阶段流量速率下的情况下也能及时唤醒，同时满足业务的高QoS要求。
实施例八
图9是依据本发明一实施例的无源光网络PON系统的逻辑结构示意图。如图9所示，该系统包括光线路终端OLT901和光网络单元ONU902。
OLT901，用于接收对应于处于节能模式的ONU902的业务报文，所述业务报文携带报文特征，所述报文特征指示所述业务报文的业务类型；所述OLT901，用于检测所述业务报文的报文特征，当所述业务报文的报文特征为预设的需要唤醒ONU902的报文特征时，唤醒所述处于节能模式的ONU902；
ONU902，用于从节能模式中唤醒。
另一种实施方式是，
ONU902，用于接收业务报文，所述业务报文携带报文特征，所述报文特征指示所述业务报文的业务类型；所述ONU902，用于检测所述业务报文的报文特征，当所述业务报文的报文特征为预设的需要唤醒ONU902的报文特征时，向OLT901发送唤醒指示请求；
OLT901，用于接收所述ONU902的唤醒指示，指示所述ONU902从节能模式中唤醒。
通过以上的技术方案，可实现将预设的报文特征作为OLT唤醒ONU或者ONU主动从节能模式中唤醒的触发条件，无需确定唤醒门限值，保证了ONU在业务初始阶段流量速率下的情况下也能及时唤醒，同时满足业务的高QoS要求。
实施例九
图10是依据本发明一实施例的无源光网络PON的计算机设备1000的结构示意图。如图10所示，计算机设备1000包括处理器1001、存储器1002、输入/输出接口1003、通信接口1004和总线1005。其中，处理器1001、存储器1002、输入/输出接口1003和通信接口1004通过总线1005实现彼此之间的通信连接。
处理器1001可以采用通用的中央处理器(Central Processing Unit，CPU)，微处理器，应用专用集成电路(Application Specific Integrated Circuit，ASIC)，或者至少一个集成电路，用于执行相关程序，以实现本发明实施例所提供的技术方案。
存储器1002可以是只读存储器(Read Only Memory，ROM)，静态存储设备，动态存储设备或者随机存取存储器(Random Access Memory，RAM)。存储器1002可以存储操作系统和其他应用程序。在通过软件或者固件来实现本发明实施例提供的技术方案时，用于实现本发明实施例提供的技术方案的程序代码保存在存储器1002中，并由处理器1001来执行。
输入/输出接口1003用于接收输入的数据和信息，输出操作结果等数据。
通信接口1004使用例如但不限于收发器一类的收发装置，来实现计算机设备1000与其他设备或通信网络之间的通信。
总线1005可包括一通路，在计算机设备1000各个部件(例如处理器1001、存储器1002、输入/输出接口1003和通信接口1004)之间传送信息。
具体实施过程中，OLT通过通信接口1004接收对应于处于节能模式的ONU的业务报文，所述业务报文携带报文特征，所述报文特征指示所述业务报文的业务类型；所述OLT通过处理器1001执行保存于存储器1002的代码，实现检测所述业务报文的报文特征，当所述业务报文的报文特征为预设的需要唤醒ONU的报文特征时，唤醒所述处于节能模式的ONU。
具体实施过程中，ONU通过通信接口1004接收业务报文，所述业务报文携带报文特征，所述报文特征指示所述业务报文的业务类型；所述ONU通过处理器1001执行保存于存储器1002的代码，实现检测所述业务报文的报文特征，当所述业务报文的报文特征为预设的需要唤醒ONU的报文特征时，所述ONU从节能模式中唤醒。
应注意，尽管图10所示的计算机设备1000仅仅示出了处理器1001、存储器1002、输入/输出接口1003、通信接口1004以及总线1005，但是在具体实现过程中，本领域的技术人员应当明白，计算机设备1000还包含实现正常运行所必须的其他器件。同时，根据具体需要，本领域的技术人员应当明白，计算机设备1000还可包含实现其他附加功能的硬件器件。此外，本领域的技术人员应当明白，计算机设备1000也可仅仅包含实现本发明实施例所必须的器件，而不必包含图10中所示的全部器件。
通过以上的技术方案，可实现将预设的报文特征作为OLT唤醒ONU或者ONU主动从节能模式中唤醒的触发条件，保证了ONU在业务初始阶段流量速率下的情况下也能及时唤醒，同时满足业务的高QoS要求。
本发明实施例中仅仅以GPON协议和EPON协议为例进行说明，但不限于此，随着网络的演进，网络中可能会其他类型的协议，也都可以采用本发明的技术方案，实现将报文特征作为ONU从节能模式中唤醒的触发条件，在此不再赘述。
本领域普通技术人员将会理解，本发明的各个方面、或各个方面的可能实现方式可以被具体实施为系统、方法或者计算机程序产品。因此，本发明的各方面、或各个方面的可能实现方式可以采用完全硬件实施例、完全软件实施例(包括固件、驻留软件等等)，或者组合软件和硬件方面的实施例的形式。此外，本发明的各方面、或各个方面的可能实现方式可以采用计算机程序产品的形式，计算机程序产品是指存储在计算机可读介质中的计算机可读程序代码。
计算机可读介质可以是计算机可读信号介质或者计算机可读存储介质。计算机可读存储介质包含但不限于电子、磁性、光学、电磁、红外或半导体系统、设备或者装置，或者前述的任意适当组合，如随机存取存储器(RAM)、只读存储器(ROM)、可擦除可编程只读存储器(EPROM或者快闪存储器)、光纤、便携式只读存储器(CD-ROM)。
计算机中的处理器读取存储在计算机可读介质中的计算机可读程序代码，使得处理器能够执行在流程图中每个步骤、或各步骤的组合中规定的功能动作；生成实施在框图的每一块、或各块的组合中规定的功能动作的装置。
计算机可读程序代码可以完全在用户的计算机上执行、部分在用户的计算机上执行、作为单独的软件包、部分在用户的计算机上并且部分在远程计算机上，或者完全在远程计算机或者服务器上执行。也应该注意，在某些替代实施方案中，在流程图中各步骤、或框图中各块所注明的功能可能不按图中注明的顺序发生。例如，依赖于所涉及的功能，接连示出的两个步骤、或两个块实际上可能被大致同时执行，或者这些块有时候可能被以相反顺序执行。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每 个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本发明的范围。
以上所述，仅为本发明的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本发明的保护范围之内。因此，本发明的保护范围应所述以权利要求的保护范围为准。
以上所述仅为本发明的几个实施例，本领域的技术人员依据申请文件公开的可以对本发明进行各种改动或变型而不脱离本发明的精神和范围。

Claims (35)

  1. 一种无源光网络PON中唤醒光网络单元ONU的方法，其特征在于，所述方法包括：
    光线路终端OLT接收对应于处于节能模式的ONU的业务报文，所述业务报文携带报文特征，所述报文特征指示所述业务报文的业务类型；
    所述OLT检测所述业务报文的报文特征；
    当所述业务报文的报文特征为预设的需要唤醒ONU的报文特征时，所述OLT唤醒所述处于节能模式的ONU。
  2. 如权利要求1所述的方法，其特征在于，所述预设的需要唤醒ONU的报文特征包括：
    指示语音业务的报文特征和/或指示视频业务的报文特征。
  3. 如权利要求1所述的方法，其特征在于，所述节能模式包括ONU的发送模块为打开状态，所述OLT接收对应于处于节能模式的ONU的业务报文包括：
    所述处于节能模式的ONU处于发送模块为打开状态时，所述OLT接收所述处于节能模式的ONU的业务报文。
  4. 如权利要求1所述的方法，其特征在于，所述OLT接收对应于处于节能模式的ONU的业务报文包括：
    所述OLT接收从网络侧设备发送给所述处于节能模式的ONU的业务报文。
  5. 如权利要求1所述的方法，其特征在于，所述节能模式包括ONU的接收模块为打开状态，所述OLT唤醒所述处于节能模式的ONU包括：
    所述处于节能模式的ONU处于接收模块为打开状态时，所述OLT唤醒所述处于节能模式的ONU。
  6. 如权利要求1-5任一所述的方法，其特征在于，所述OLT接收对应于处于节能模式的ONU的业务报文之前，所述方法包括：
    所述OLT接收来自ONU的所述预设的需要唤醒ONU的报文特征。
  7. 如权利要求1-5任一所述的方法，其特征在于，所述OLT接收对应于处于节能模式的ONU之前，包括：
    所述OLT设置所述预设的需要唤醒ONU的报文特征。
  8. 如权利要求1-7任一所述的方法，其特征在于，所述节能模式包括周期性睡眠模式，所述周期性睡眠模式中，所述ONU在有意识的睡眠状态和睡着状态之间循环切换，所述ONU在有意识的睡眠状态时接收模块和发送模块为打开状态，所述ONU在所述睡着状态时接收模块和发送模块为关闭状态。
  9. 如权利要求1-7任一所述的方法，其特征在于，所述节能模式包括打盹模式，所述打盹模式中，所述ONU在有意识的打盹状态和侦听状态之间循环切换，所述ONU在有意识的打盹状态时接收模块和发送模块为打开状态，所述ONU在侦听状态时发送模块为关闭状态，接收模块为打开状态。
  10. 如权利要求1所述的方法，其特征在于，所述OLT唤醒所述处于节能模式的ONU，具体包括：
    所述OLT通过强制唤醒标示FWI指示所述ONU从节能模式中唤醒。
  11. 如权利要求1所述的方法，其特征在于，所述OLT唤醒所述处于节能模式的ONU之后，所述ONU处于活跃模式，在所述活跃模式时，所述ONU的接收模块和发送模块保持打开状态。
  12. 如权利要求1-11任一所述的方法，其特征在于，所述报文特征包括：
    虚拟局域网标识VLAN ID、IP报文差分服务代码点DSCP值、 传输控制协议TCP端口号、用户数据报协议UDP端口号、802.1p优先级中至少任意一种。
  13. 一种无源光网络PON的光网络单元ONU唤醒的方法，其特征在于，所述方法包括：
    ONU处于节能模式时，接收业务报文，所述业务报文携带报文特征，所述报文特征指示所述业务报文的业务类型；
    所述ONU检测所述业务报文的报文特征；
    当所述报文特征为预设的需要唤醒ONU的报文特征时，所述ONU从所述节能模式中唤醒。
  14. 如权利要求13所述的方法，其特征在于，所述预设的需要唤醒ONU的报文特征包括：
    指示语音业务的报文特征和/或指示视频业务的报文特征。
  15. 如权利要求13所述的方法，其特征在于，所述ONU处于节能模式时，接收业务报文包括：
    所述ONU接收来自用户侧设备的业务报文。
  16. 如权利要求13所述的方法，其特征在于，所述节能模式包括ONU的接收模块为打开状态，所述ONU处于节能模式时，接收业务报文包括：
    所述ONU接收来自网络侧设备的业务报文。
  17. 如权利要求13-16任一所述的方法，其特征在于，所述ONU处于节能模式之前，包括：
    所述ONU设置所述预设的需要唤醒ONU的报文特征。
  18. 如权利要求13-16任一所述的方法，其特征在于，所述ONU处于节能模式之前，包括：
    所述ONU接收来自OLT的所述预设的需要唤醒ONU的报文特征。
  19. 如权利要求13所述的方法，其特征在于，所述ONU从节 能模式中唤醒，具体包括：
    所述ONU通过本地唤醒标示LWI指示所述ONU从节能模式中唤醒。
  20. 如权利要求13所述的方法，其特征在于，所述ONU从节能模式中唤醒之后，所述ONU处于活跃模式，在所述活跃模式时，所述ONU的接收模块和发送模块保持打开状态。
  21. 如权利要求13-20任一所述的方法，其特征在于，所述报文特征包括：
    虚拟局域网标识VLAN ID、IP报文差分服务代码点DSCP值、传输控制协议TCP端口号、用户数据报协议UDP端口号、802.1p优先级中至少任意一种。
  22. 一种光线路终端OLT，其特征在于，所述OLT包括：
    接收单元，用于接收对应于处于节能模式的ONU的业务报文，所述业务报文携带报文特征，所述报文特征指示所述业务报文的业务类型；
    检测单元，用于检测所述业务报文的报文特征；
    唤醒单元，用于当所述业务报文的报文特征为预设的需要唤醒ONU的报文特征时，所述OLT唤醒所述处于节能模式的ONU。
  23. 如权利要求22所述的OLT，其特征在于，所述预设的需要唤醒ONU的报文特征包括：
    语音业务的报文特征和/或指示视频业务的报文特征。
  24. 如权利要求22或23所述的OLT，其特征在于，还包括：
    报文特征配置单元，用于接收来自ONU的所述预设的需要唤醒ONU的报文特征。
  25. 如权利要求22或23所述的OLT，其特征在于，还包括：
    报文特征设置单元，用于设置所述预设的需要唤醒ONU的报文特征。
  26. 如权利要求22所述的OLT，其特征在于，其中：
    所述唤醒单元，用于通过强制唤醒标示FWI指示所述ONU从所述节能模式中唤醒。
  27. 如权利要求22-26任一所述的OLT，其特征在于，所述报文特征包括：
    虚拟局域网标识VLAN ID、IP报文差分服务代码点DSCP值、传输控制协议TCP端口号、用户数据报协议UDP端口号、802.1p优先级中至少任意一种。
  28. 一种光网络单元ONU，其特征在于，所述ONU包括：
    接收单元，用于接收业务报文，所述业务报文携带报文特征，所述报文特征指示所述业务报文的业务类型；
    检测单元，用于检测所述业务报文的报文特征；
    唤醒单元，用于当所述报文特征为预设的需要唤醒ONU的报文特征时，所述ONU从节能模式中唤醒。
  29. 如权利要求28所述的ONU，其特征在于，所述预设的需要唤醒ONU的报文特征包括：
    语音业务的报文特征和/或视频业务的报文特征。
  30. 如权利要求28或29所述的ONU，其特征在于，还包括：
    报文特征设置单元，用于设置所述预设的需要唤醒ONU的报文特征。
  31. 如权利要求28或29所述的ONU，其特征在于，还包括：
    报文特征配置单元，用于接收来自所述OLT的预设的需要唤醒ONU的报文特征。
  32. 如权利要求28所述的ONU，其特征在于，其中：
    所述唤醒单元，用于通过本地唤醒标示LWI指示从节能模式中唤醒。
  33. 如权利要求28-32任一所述的ONU，其特征在于，所述报 文特征包括：
    虚拟局域网标识VLAN ID、IP报文差分服务代码点DSCP值、传输控制协议TCP端口号、用户数据报协议UDP端口号、802.1p优先级中至少任意一种。
  34. 一种无源光网络PON系统，其特征在于，所述系统包括：OLT和ONU，
    所述OLT，用于接收对应于处于节能模式的ONU的业务报文，所述业务报文携带报文特征，所述报文特征指示所述业务报文的业务类型；所述OLT，用于检测所述业务报文的报文特征，当所述业务报文的报文特征为预设的需要唤醒ONU的报文特征时，唤醒所述处于节能模式的ONU；
    所述ONU，用于从节能模式中唤醒。
  35. 一种无源光网络PON系统，其特征在于，所述ONU处于节能模式，所述系统包括：OLT和ONU，
    所述ONU，用于接收业务报文，所述业务报文携带报文特征，所述报文特征指示所述业务报文的业务类型；所述ONU，用于检测所述业务报文的报文特征，当所述业务报文的报文特征为预设的需要唤醒ONU的报文特征时，向OLT发送唤醒指示请求；
    所述OLT，用于接收所述ONU的唤醒指示，指示所述ONU从所述节能模式中唤醒。
PCT/CN2014/095372 2014-12-29 2014-12-29 一种无源光网络中唤醒光网络单元的方法、设备和系统 WO2016106513A1 (zh)

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