WO2011035607A1 - 一种基于GPON系统的端到端QoS控制方法和装置 - Google Patents

一种基于GPON系统的端到端QoS控制方法和装置 Download PDF

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Publication number
WO2011035607A1
WO2011035607A1 PCT/CN2010/073519 CN2010073519W WO2011035607A1 WO 2011035607 A1 WO2011035607 A1 WO 2011035607A1 CN 2010073519 W CN2010073519 W CN 2010073519W WO 2011035607 A1 WO2011035607 A1 WO 2011035607A1
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Prior art keywords
threshold
data packet
cir
pir
bearer service
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PCT/CN2010/073519
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English (en)
French (fr)
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杨旭涛
兰君
李明生
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中兴通讯股份有限公司
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Publication of WO2011035607A1 publication Critical patent/WO2011035607A1/zh

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00Traffic control in data switching networks
    • H04L47/10Flow control; Congestion control
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00Traffic control in data switching networks
    • H04L47/10Flow control; Congestion control
    • H04L47/22Traffic shaping
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00Traffic control in data switching networks
    • H04L47/10Flow control; Congestion control
    • H04L47/24Traffic characterised by specific attributes, e.g. priority or QoS
    • H04L47/2458Modification of priorities while in transit
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00Traffic control in data switching networks
    • H04L47/10Flow control; Congestion control
    • H04L47/32Flow control; Congestion control by discarding or delaying data units, e.g. packets or frames

Definitions

  • the present invention relates to a G-bit Passive Optical Network (GPON) system end-to-end Quality of Service (QoS) control technology, and specifically relates to an optical network terminal (ONT) in the uplink direction of data.
  • GPON G-bit Passive Optical Network
  • QoS Quality of Service
  • ONT optical network terminal
  • the GPON technology is the latest generation broadband passive optical integrated access standard based on ITU-T G.984.X standard. It has many advantages such as high bandwidth, high efficiency, large coverage and rich user interface. It is regarded by most operators.
  • the access device is an optical line terminal (OLT) of the central office, an ONT of the user end, an ODN (optical distribution network) composed of a single mode fiber (SM fiber) and a passive splitter (Splitter) connected to the OLT and the ONT device, and
  • OLT optical line terminal
  • the OLT uplinks to the network edge router (PE router) and the router (P router) at the core of the network, and uses Virtual Private Network (VPN) technology to finally connect to each service provider to obtain each Kind of business.
  • VPN Virtual Private Network
  • the end-to-end QoS guarantee mechanism is implemented in the networking between the ONT of the GPON system and the PEs connected to the route conversion processors (RSPs). Summary of the invention
  • GPON is based on the bandwidth allocation technology of the next-generation broadband network.
  • the multi-user time division multiplexing forms an uplink total bandwidth, while the OLT uses dynamic bandwidth allocation (DBA) to adjust each user's bandwidth.
  • DBA dynamic bandwidth allocation
  • Bandwidth that is, the OLT allocates an uplink transmission slot for each user's transmission container (Tcont). Therefore, each user's Tcont bandwidth will have a range of guaranteed bandwidth and maximum bandwidth.
  • the bandwidth within the bandwidth is guaranteed by the system under any circumstances.
  • the maximum bandwidth is when there is no conflict with the guaranteed bandwidth of other users.
  • the user's maximum traffic value which allows for more efficient use of system bandwidth. For a single home user, different services such as VoIP, HSL IPTV, and VOD are required to be carried.
  • the current network usually adopts strict priority (SP) scheduling for the four services of the same Tcont, that is, the service with high priority is ensured according to the priority mapping relationship.
  • SP strict priority
  • the VoIP service priority (802.1q Priority) with the highest service real-time requirement is the highest, usually 7
  • the data of the priority service belongs to the data traffic that the SP scheduling can fully guarantee
  • the priority of HSI is higher than IPTV, and the priority of IPTV is higher than VOD.
  • the scheduling mode designed in this way can guarantee high priority. After the service is completely passed, it is the turn to get the bandwidth of the next priority service.
  • the service data can be Normally through the ONT uplink, there is no traffic shaping on the OLT.
  • the data arrives at the PE router or P router, and the PE uplink exit also uses the SP scheduling, the user or a large number of burst HSI data generated by the similar situation causes network congestion. It may affect the HSI service of other normal users, and it will also affect other low-priority services.
  • the main technical problem to be solved by the present invention is to provide an end-to-end QoS control method and apparatus based on a GPON system, so as to dynamically perform uplink traffic adjustment according to the transmission rate of the uplink data packet.
  • the present invention provides an end-to-end QoS control method based on a GPON system, which includes the following processes:
  • the data packet transmission rate of the uplink through the bearer service channel is smaller than the CIR threshold of the bearer service channel, the data packet is normally uplinked.
  • the uplink data packet exceeding the PIR threshold value is discarded.
  • the setting the CIR threshold and the PIR threshold further includes: setting a sum of CIR thresholds of all bearer service channels of each user not exceeding a guaranteed bandwidth of the user transport container Tcont; setting all bearer services of each user The sum of the PIR thresholds of the channels does not exceed the maximum bandwidth of the user Tcont.
  • the step of performing flow control on the uplink data packet includes: reducing a priority of the uplink data packet, or discarding a data packet between the CIR threshold value and a PIR threshold value according to a network congestion degree; Or transmitting the data packet in the uplink; or directly discarding the uplink data packet between the CIR threshold value and the PIR threshold value in the optical network terminal.
  • the optical line terminal configuration interface is first remotely set, and then the setting is sent to the optical network terminal by using an optical network terminal management control interface OMCI message.
  • the CIR threshold and the PIR threshold setting of each bearer service channel are completed by the optical network terminal.
  • the present invention also provides an end-to-end QoS control apparatus based on a GPON system, including: a threshold setting unit configured to set a committed information rate CIR threshold and a peak information rate PIR threshold of a bearer service channel, where the PIR threshold is greater than CIR threshold; an uplink rate comparison unit, configured to compare a packet transmission rate that is uplinked by the bearer service channel with a CIR threshold and a PIR threshold set by the bearer service channel; and a packet control unit, where Controlling the uplink data packet is completed according to the rate and threshold comparison result output by the uplink rate comparison unit.
  • a threshold setting unit configured to set a committed information rate CIR threshold and a peak information rate PIR threshold of a bearer service channel, where the PIR threshold is greater than CIR threshold
  • an uplink rate comparison unit configured to compare a packet transmission rate that is uplinked by the bearer service channel with a CIR threshold and a PIR threshold set by the bearer service channel
  • a packet control unit where Controlling the
  • the data packet control unit includes: a first control subunit configured to normally transmit the data when a data packet transmission rate that is uplinked through the bearer service channel is smaller than a CIR threshold of the bearer service channel a second control subunit, configured to: when the data transmission rate of the uplink through the bearer service channel is between the CIR threshold and the PIR threshold of the bearer service channel, the uplink data packet Performing flow control; and a third control sub-unit, configured to discard an uplink that exceeds the PIR threshold when a data packet transmission rate that is uplinked through the bearer service channel is greater than a PIR threshold of the bearer service channel data pack.
  • the second control subunit is configured to reduce the priority of the uplink data packet when the data transmission rate of the uplink through the bearer service channel is between the CIR threshold and the PIR threshold of the bearer service channel, Or discarding the data packet according to the degree of network congestion or transmitting the data packet in the uplink; or directly discarding the uplink data packet between the CIR threshold value and the PIR threshold value in the optical network terminal.
  • the threshold setting unit is configured to set a CIR threshold and a PIR threshold, and a sum of CIR thresholds of all bearer service channels of each user does not exceed a guaranteed bandwidth of the user transport container Tcont; The sum of the PIR thresholds of all bearer service channels does not exceed the maximum bandwidth of the user Tcont.
  • the ONT can detect various service traffic in the uplink direction of the data, and decides to reduce the priority of the service to ensure the user flow according to whether the CIR threshold is exceeded.
  • the CIR part of the CIR threshold and the PIR threshold are forwarded or passed according to the degree of network congestion, and the data flow exceeding the PIR threshold is directly discarded.
  • the method of the invention can effectively utilize the user bandwidth, and can satisfy the user's demand to the greatest extent in the case that the traffic does not conflict. In the case of congestion, high-priority services are guaranteed to pass without affecting low-priority services, and the system can transmit the remaining traffic as much as possible.
  • FIG. 2 is a system block diagram of an end-to-end QoS control apparatus according to an embodiment of the present invention.
  • the present invention sets a Committed Information Rate (CIR) threshold and a Peak Information Rate (PIR) threshold for each Gemport (Gemport).
  • CIR Committed Information Rate
  • PIR Peak Information Rate
  • the PIR threshold is greater than the CIR threshold. It is used to ensure the CIR part of the user data stream. The data of the CIR threshold value less than the service setting is not modified. The part exceeding the CIR threshold but less than the PIR threshold lowers its priority according to the degree of network congestion. Discard or pass, of course, you can choose to discard this part of the traffic directly in the ONT; at the same time, direct discarding is performed for the data stream exceeding the PIR threshold.
  • the sum of the CIR thresholds of all services is less than or equal to the guaranteed bandwidth of Tcont.
  • the sum of the PIR thresholds of all services is less than or equal to the maximum bandwidth set by Tcont.
  • OMCI ONT Management Control Interface
  • the ONT sets the CIR and PIR thresholds given by the passive optical network (PON) MAC chip for each Gemport.
  • PON passive optical network
  • Such a rule-compliant data flow uses an extended virtual local area network (VLAN) modification to reduce the priority or directly drop packets.
  • VLAN virtual local area network
  • Embodiment 1 is a diagrammatic representation of Embodiment 1:
  • the present invention provides an end-to-end service quality control method based on a G-bit passive optical network GPON system, the method comprising:
  • the uplink data transmission rate through the bearer service channel is smaller than the bearer service channel
  • the CIR threshold is used, the data packet is normally uplinked
  • the uplink data packet exceeding the PIR threshold is discarded.
  • step of setting the CIR threshold and the PIR threshold setting a sum of CIR thresholds of all bearer service channels of each user does not exceed a guaranteed bandwidth of the user transport container Tcont; setting all bearer services of each user The sum of the PIR thresholds of the channels does not exceed the maximum bandwidth of the user Tcont.
  • the step of performing flow control on the uplink data packet may include: reducing a priority of the uplink data packet, and discarding between the CIR threshold value and a PIR threshold value according to a network congestion degree.
  • the data packet or the uplink transmission of the data packet; that is, the data packet may be discarded, transmitted, or modified according to needs.
  • the optical line terminal configuration interface is first remotely set, and then the setting is sent to the optical network terminal through the optical network terminal management control interface OMCI message.
  • the CIR threshold and the PIR threshold setting of each bearer service channel are completed by the optical network terminal.
  • Embodiment 2 is a diagrammatic representation of Embodiment 1:
  • OMCI is the GPON standard management G.984.4 protocol defined by the International Telecommunication Union Telecommunication Standardization Sector (ITU-T). It has a complete set of ONT remote management methods, but at the same time G.984.4 is also an open protocol. You can add content by referring to the protocol format and customizing it.
  • a property identifier (Message identifier) is defined for each feature of the Optical Network Unit (ONU), so that the management entities can be created, set, modified, and deleted to implement remote management of the device.
  • the traffic restriction entity (Traffic Limit-U I ) needs to be added, and a CIR rate tag (CIR Tag) is set in the entity, where 0 indicates that the CIR is used only for the rate limit, and 1 indicates that the CIR is used for the traffic identifier, that is, Make priority changes.
  • CIR Rate Tag CIR rate tag
  • two priority adjustment modes are set: Priority 1 and Priority 2.
  • Priority 1 VLAN priority when the CIR Tag is 1 and the traffic is lower than the CIR threshold. Change to the current value; or modify the VLAN priority of the packet when the CIR tag is 0.
  • Priority 2 Priority of the VLAN when the CIR Tag is 1 and the traffic is higher than the CIR threshold.
  • ⁇ ' ⁇ is changed to the current value.
  • the priority can be modified for traffic below the PIR threshold.
  • the priority can be modified as needed.
  • the priority is modified to ensure different levels of service. Schedule in a different order.
  • the bottom chip after receiving the command set by the OMCI, the bottom chip can perform the PIR implementation first, that is, the total rate of the U I entry is limited to discard the packets exceeding the PIR traffic.
  • the following process is shown in Figure 1, including the following process:
  • the packets from the UNI interface are matched by the Compact Field Processor (CFP) function.
  • the packets can be distinguished based on the VLAN value, the Pirority priority value, or the Ethernet type.
  • Step 12 CIR rate detection.
  • the CIR rate is identified by the CFP flow meter (METER) function.
  • the METER function can distinguish between the in-band (In-Band) and the Out-Band traffic of the configured rate.
  • the out-of-band traffic is Rate-Violation, in-band.
  • the traffic is None Rate— Violation.
  • Step 13 Read the CIR label. When the CIR label is 0, go to step 14. When the CIR label is 1, go to step 15.
  • Step 14 The CIR threshold is only used for speed limit (Priority 1 is active and Priority 2 is invalid). At this time, the priority of the in-band traffic is modified, and the out-of-band traffic is directly discarded. The effect actually achieved is that the message is limited to the rate of CIR.
  • Step 15 CIR is used for traffic identification and priority modification (Priority 1 and Priority2 are valid).
  • the operation of modifying the priority is performed for both in-band and out-of-band traffic.
  • the end-to-end QoS control method based on the G-bit passive optical network GPON system provided by the invention enables the ONT to detect various service flows in the uplink direction of the data, and according to whether the setting is exceeded or not
  • the CIR threshold is used to determine the scheme for lowering the priority of this service to ensure the CIR part of the user flow. For the part between the CIR threshold and the PIR threshold, it is forwarded or passed according to the degree of network congestion, and The data flow of the PIR threshold is directly discarded.
  • the above method can effectively utilize the user bandwidth to meet the user requirements in the case of non-conflict traffic. In the case of congestion, the high-priority service is guaranteed to pass without affecting the low bandwidth. Priority service, while achieving the system to send the remaining traffic as much as possible.
  • the device includes: a threshold setting unit 21 configured to set a CIR threshold and a PIR threshold of a bearer service channel, where the PIR gate The limit value is greater than the CIR threshold; the uplink rate comparison unit 22 is configured to compare the packet transmission rate of the uplink through the bearer service channel with the CIR threshold and the PIR threshold set by the bearer service channel; the packet control unit 23 And setting the control of the uplink data packet according to the rate and the threshold value comparison result output by the uplink rate comparison unit.
  • a threshold setting unit 21 configured to set a CIR threshold and a PIR threshold of a bearer service channel, where the PIR gate The limit value is greater than the CIR threshold
  • the uplink rate comparison unit 22 is configured to compare the packet transmission rate of the uplink through the bearer service channel with the CIR threshold and the PIR threshold set by the bearer service channel
  • the packet control unit 23 And setting the control of the uplink data packet according to the rate and the threshold value comparison result output by the uplink rate comparison unit.
  • the data packet control unit 23 may include: a first control subunit, configured to: when a data packet transmission rate that is uplinked through the bearer service channel is smaller than a CIR threshold value of the channel, Normal uplink data packet;
  • a second control sub-unit configured to perform traffic on the uplink data packet when a data packet transmission rate that is uplinked through the bearer service channel is between the CIR threshold value and the PIR threshold value of the bearer service channel Control;
  • the third control sub-unit is configured to discard the uplink data packet that exceeds the PIR threshold value when the data packet transmission rate that is uplinked through the bearer service channel is greater than the PIR threshold value.
  • the foregoing second control subunit is configured to reduce the priority of the uplink data packet when the data packet transmission rate that is uplinked through the bearer service channel is between the CIR threshold value and the PIR threshold value of the bearer service channel. And discarding the data packet between the CIR threshold value and the PIR threshold value according to the network congestion degree or uplink transmitting the data packet; and directly discarding the CIR threshold value and the optical network terminal Upstream packets between PIR thresholds.
  • the threshold setting unit is configured to set each of a CIR threshold and a PIR threshold.
  • the sum of the CIR thresholds of all the bearer service channels of the user does not exceed the guaranteed bandwidth of the user transport container Tcont; the sum of the PIR thresholds of all bearer service channels of each user does not exceed the maximum bandwidth of the user Tcont.
  • the end-to-end QoS control device based on the G-bit passive optical network GPON system provided by the invention can detect various service traffic in the uplink direction of the data, and decides to lower the service priority according to whether the CIR threshold value is exceeded or not.
  • the scheme of the level is to ensure the CIR part of the user flow, and the part between the CIR threshold and the PIR threshold is forwarded or passed according to the degree of network congestion, and the data flow exceeding the PIR threshold is directly discarded.
  • the above method can effectively utilize the user bandwidth to meet the user's needs in the case of no traffic conflicts. In the event of congestion, ensure that high-priority services pass without affecting low-priority services, and at the same time implement the system. It is possible to send the remaining traffic.
  • the end-to-end QoS control method and device based on the GPON system provided by the invention can effectively utilize the user bandwidth, and can satisfy the user's demand to the maximum extent in the case that the traffic does not conflict; and in the case of congestion, the guarantee is high.
  • the priority service passes without affecting the low-priority service, and at the same time, the system can transmit the remaining traffic as much as possible; effectively and flexibly solve the network congestion problem that may occur in the system.

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  • Computer Networks & Wireless Communication (AREA)
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Abstract

本发明公开了一种基于GPON系统的端到端QoS控制方法和装置,通过ONT在数据上行方向检测各种业务流量,并根据是否超过设定的CIR门限值,来决定降低此业务优先级的方案以保证用户流的CIR部分, 对于介于CIR门限值和PIR门限值之间部分则根据网络拥塞程度而转发或通过,同时对于超过PIR门限值的数据流实行直接丢弃。本发明的这种方式可以有效利用用户带宽, 在流量不冲突情况下, 最大限度满足用户需求。 并在发生拥塞情况下,保证高优先级业务通过的同时不影响低优先级业务,同时实现了系统尽可能地发送剩余流量。

Description

一种基于 GP0N系统的端到端 QoS控制方法和装置
技术领域
本发明涉及一种 G比特无源光网络( GPON )系统端到端业务质量( Quality of Service, QoS )控制的技术,具体涉及光网络终端( Optical network terminal, ONT )在数据上行方向对各种业务流量进行控制的技术。
背景技术
GPON技术是基于 ITU-T G.984.X标准的最新一代宽带无源光综合接入标 准, 具有高带宽, 高效率, 大覆盖范围, 用户接口丰富等众多优点, 被大多 数运营商视为实现接入网业务宽带化, 综合化改造的理想技术。 作为接入设 备是由局端的光线路终端 (OLT ) , 用户端的 ONT , 由连接 OLT和 ONT 设备的单模光纤 (SM fiber )和无源分光器(Splitter )组成的 ODN (光分配 网络) 以及网管系统组成。 电信组网中 OLT上行连接网络边缘路由器(PE 路由器) , 以及处于网路核心的路由器(P路由器) , 并使用虚拟专用网络 ( Virtual Private Network, VPN )技术最终连接到各服务提供商以获得各种业 务。
虽然网络中各种独立的设备都有 QoS保证机制, 但对于整个系统来说, 如何实现端到端的 QoS保证才更为重要。 因为业务对网络性能的要求直接来 源于业务对端到端客户感知的满意程度的需求。 尤其对于目前在网络中涌现 出的越来越多的实时业务,如网络电话( Voice over Internet Protocol, VoIP )、 交互式网络电视(Internet Protocol Television , IPTV )、 视频点播( Video On Demand, VOD ) 、 高速互联网 (High Speed Internet, HSI)等业务对端到端的 可用带宽、 时延、 抖动和丟包十分敏感, 这些性能参数严重影响着此类业务 的开展和运营维护。 这些指标的组合整体反映了承载网络所能提供的 QoS, 因此准确把握这些网络 QoS指标是对网络承载性能进行测评的基础。 端到端 的 QoS保障机制在组网中分别在 GPON系统的 ONT和连接各路由转换处理 器(RSP ) 的 PE之间实现。 发明内容
本申请重点关注可用带宽这个参数, GPON基于下一代宽带网络的带宽 分配技术, 多用户时分复用的形式共享一个上行总带宽, 而 OLT釆用的是动 态带宽分配(DBA )调节每个用户的带宽, 即 OLT 为每个用户的传输容器 ( Tcont )分配上行发送时隙。 所以各用户的 Tcont带宽都会有保证带宽和最 大带宽的范围, 保证带宽内的流量是系统在任何情况下都可以满足的, 最大 带宽是当与其他用户的保证带宽没有冲突的情况下, 系统给予该用户的最大 流量值, 这样就可以更有效的利用系统带宽。 而对单独的家庭用户来说, 同 时需要承载 VoIP、 HSL IPTV、 VOD等不同业务, 这些业务分属不同的承载 业务通道( Gemport ) , 当然 Gemport间也就是不同业务间, 也有优先级调度 关系, 现网通常情况下釆用在同一 Tcont的四种业务实行严格优先级(SP ) 调度, 即按照优先级映射关系优先保证级别高的业务。 例如: 业务实时性要 求最高的 VoIP业务优先级(802.1q Priority )最高, 通常为 7 , 该优先级业务 的数据属于 SP调度能够完全保证的数据流量优先通过, HSI、 IPTV、 VOD 的优先级由高到低可以分别为 Priority=6、 Priority=5、 Priority=4„ 这样 HSI的 优先级高于 IPTV, IPTV的优先级高于 VOD, 按照这种方式设计的调度模式 能有保证高优先级的业务完全通过后, 才轮到下一优先级的业务得到带宽。
上述保证高优先级业务的方法会带来一些风险, 具体如下:
1. 本用户没有产生拥塞的情况下, 如果某一种业务突然数据量增大, 假 设只有存在 HSI业务,当上行流量大于 Tcont的保证带宽甚至到达 Tcont的最 大带宽时, 该业务数据都是可以正常通过 ONT上行, 在 OLT上也没有任何 流量整形, 当数据到达 PE路由器( router )或者 P router, PE上行出口同样 使用 SP调度的话, 该用户或者类似情况产生的大量突发 HSI数据造成网络 拥塞, 可能对其他正常用户的 HSI业务产生影响, 同样也会影响其他低优先 级业务。
2. 如果用户多种业务同时存在, 某一种业务流量突然增大, 在 Tcont内 就造成拥塞, 由于釆用严格优先级调度算法, 必须保证高优先级业务全部通 过, 这样其他低优先级业务被丟弃。 综上所述, 在现有的动态带宽分配机制中釆用的严格优先级调度对于某 一业务数据量突发增加的情况下, 由于缺乏有效灵活的调度机制, 导致系统 可能发生网络拥塞。
本发明要解决的主要技术问题是, 提供一种基于 GPON 系统的端到端 QoS控制方法和装置, 以实现根据上行数据包的传输速率动态进行上行流量 调整。
为解决上述技术问题,本发明提供一种基于 GPON系统的端到端 QoS控 制方法, 包括以下处理过程:
对每个承载业务通道设置承诺信息速率 CIR门限和峰值信息速率 PIR门 限, 其中 PIR门限值大于 CIR门限值;
当通过所述承载业务通道上行的数据包传输速率小于所述承载业务通道 的 CIR门限值时, 正常上行传输所述数据包;
当通过承载业务通道上行的数据包传输速率介于所述承载业务通道的 CIR门限值和 PIR门限值之间时, 对所述上行的数据包进行流量控制; 以及 当通过承载业务通道上行的数据包传输速率大于所述承载业务通道的 PIR门限值时, 丟弃超过所述 PIR门限值的上行的数据包。
优选地, 所述设置 CIR门限和 PIR门限中还包括: 设置每个用户的所有 承载业务通道的 CIR门限值之和不超过该用户传输容器 Tcont的保证带宽; 设置每个用户的所有承载业务通道的 PIR门限值之和不超过该用户 Tcont的 最大带宽。
所述对上行的数据包进行流量控制的步骤包括: 降低所述上行的数据包 的优先级, 或者根据网络拥塞程度丟弃介于所述 CIR门限值和 PIR门限值之 间的数据包, 或者上行传输所述数据包; 或者在光网络终端直接丟弃介于所 述 CIR门限值和 PIR门限值之间的上行的数据包。
优选地, 在所述设置承载业务通道的 CIR门限和 PIR门限的步骤中, 先 在光线路终端配置界面远程设置, 然后通过光网络终端管理控制接口 OMCI 消息将所述设置发送到光网络终端, 由所述光网络终端完成各承载业务通道 的 CIR门限和 PIR门限设置。 本发明还提供了一种基于 GPON系统的端到端 QoS控制装置, 包括: 门限设置单元, 其设置为设置承载业务通道的承诺信息速率 CIR门限和峰值 信息速率 PIR门限, 其中 PIR门限值大于 CIR门限值; 上行速率比较单元, 其设置为比较通过承载业务通道上行的数据包传输速率与所述承载业务通道 设置的 CIR门限值和 PIR门限值; 以及数据包控制单元, 其设置为根据所述 上行速率比较单元输出的速率和门限值比较结果完成对上行数据包的控制。
优选地, 所述数据包控制单元包括: 第一控制子单元, 其设置为当通过 承载业务通道上行的数据包传输速率小于所述承载业务通道的 CIR 门限值 时, 正常上行传输所述数据包; 第二控制子单元, 其设置为当通过承载业务 通道上行的数据包传输速率介于所述承载业务通道的 CIR门限值和 PIR门限 值之间时, 对所述上行的数据包进行流量控制; 以及第三控制子单元, 其设 置为当通过承载业务通道上行的数据包传输速率大于所述承载业务通道的 PIR门限值时, 丟弃超过所述 PIR门限值的上行的数据包。
所述第二控制子单元是设置为当通过承载业务通道上行的数据包传输速 率介于所述承载业务通道的 CIR门限值和 PIR门限值之间时, 降低上行数据 包的优先级, 或者根据网络拥塞程度丟弃数据包或者上行传输所述数据包; 或者在光网络终端直接丟弃介于所述 CIR门限值和 PIR门限值之间的上行的 数据包。
优选地, 所述门限设置单元是设置为在设置 CIR门限和 PIR门限时, 每 个用户的所有承载业务通道的 CIR门限值之和不超过该用户传输容器 Tcont 的保证带宽; 每个用户的所有承载业务通道的 PIR门限值之和不超过该用户 Tcont的最大带宽。
釆用本发明提出的端到端 QoS控制方法和装置, ONT可以在数据上行方 向检测各种业务流量, 并根据是否超过设定的 CIR门限, 来决定降低此业务 优先级的方案以保证用户流的 CIR部分, 对于介于 CIR门限和 PIR门限之间 部分则根据网络拥塞程度而转发或通过, 同时对于超过 PIR门限的数据流实 行直接丟弃。 本发明的这种方式可以有效利用用户带宽, 在流量不冲突情况 下, 最大限度满足用户需求。 并在发生拥塞情况下, 保证高优先级业务通过 的同时不影响低优先级业务, 同时实现了系统尽可能发送剩余流量。 附图概述
图 1为本发明实施一端到端 QoS控制方法的处理流程图;
图 2为本发明实施例二端到端 QoS控制装置的系统框图。
本发明的较佳实施方式
下面通过具体实施方式结合附图对本发明作进一步详细说明。
本发明通过对每个承载业务的通道 (Gemport ) 设置承诺信息速率 ( Commited Information Rate, CIR ) 门限、 峰值信息速率 ( Peak Information Rate, PIR )门限, 该 PIR门限值大于 CIR门限值, 目的是用来保证用户数据 流的 CIR部分, 对于小于各业务设定 CIR门限值部分的数据不做修改, 超过 CIR门限值但小于 PIR门限值的部分降低其优先级, 根据网络拥塞程度丟弃 或通过, 当然也可以选择在 ONT直接丟弃这部分流量; 同时对于超过 PIR门 限值的数据流实行直接丟弃。 具体应用中可以设置所有业务的 CIR门限值之 和小于等于 Tcont的保证带宽, 所有业务的 PIR 门限值之和小于等于 Tcont 设置的最大带宽。 在具体应用中可以使用 ONT 管理控制接口 (ONT Management Control Interface, OMCI )命令, 在 OLT配置界面远程设置 ONT 的 Gemport参数。 ONT接收到 OMCI消息后,设置无源光网络( PON ) MAC 芯片对每条 Gemport给定的 CIR、 PIR门限。 这样符合规则的数据流使用扩 展虚拟局域网 ( Virtual Local Area Network, VLAN )修改降低优先级或者直 接丟弃数据包。
实施例一:
本发明提供了一种基于 G比特无源光网络 GPON系统的端到端业务质量 控制方法, 所述方法包括:
对每个承载业务通道设置承诺信息速率 CIR门限和峰值信息速率 PIR门 限, 其中 PIR门限值大于 CIR门限值;
当通过所述承载业务通道上行的数据包传输速率小于所述承载业务通道 的 CIR门限值时, 正常上行传输所述数据包;
当通过承载业务通道上行的数据包传输速率介于所述承载业务通道的 CIR门限值和 PIR门限值之间时, 对所述上行的数据包进行流量控制;
当通过承载业务通道上行的数据包传输速率大于所述承载业务通道的 PIR门限值时, 丟弃超过所述 PIR门限值的上行的数据包。
其中, 在所述设置 CIR门限和 PIR门限的步骤中, 设置每个用户的所有 承载业务通道的 CIR门限值之和不超过该用户传输容器 Tcont的保证带宽; 设置每个用户的所有承载业务通道的 PIR门限值之和不超过该用户 Tcont的 最大带宽。
所述对所述上行的数据包进行流量控制的步骤可以包括: 降低所述上行 的数据包的优先级, 根据网络拥塞程度丟弃介于所述 CIR门限值和 PIR门限 值之间的数据包或者上行传输所述数据包; 即可以根据需要丟弃、 传输数据 包或修改数据包的优先级。
另外, 在所述对每个承载业务通道设置 CIR门限和 PIR门限的步骤中, 先在光线路终端配置界面远程设置, 然后通过光网络终端管理控制接口 OMCI 消息将所述设置发送到光网络终端, 由所述光网络终端完成各承载业 务通道的 CIR门限和 PIR门限设置。
实施例二:
首先自定义 OMCI消息, OMCI是国际电信联盟电信标准化部门( ITU-T ) 定义的 GPON标准管理 G.984.4协议内容,里面有一整套完善的 ONT远程管 理方法, 但是同时 G.984.4也是开放性协议, 可以参照协议格式釆取自定义 的方式增加内容。 协议中对光网络单元 ( Optical Network Unit, ONU ) 的每 个特性都会定义一个管理实体( Message identifier ) , 从而釆用创建、 设置、 修改、删除这些管理实体实现对 ΟΝΤ的远程管理。 本实施例中首先需要增加 流量限制实体( Traffic Limit-U I ) ,在该实体中设置 CIR速率标签( CIR Tag ) , 其中 0表示 CIR仅用于限速, 1表示 CIR用于流量标识, 即进行优先级修改。 此外, 设置两个优先级调整模式: Priority 1和 Priority 2。
Priority 1: 当 CIR Tag为 1 , 且流量低于 CIR门限值时将 VLAN优先级 修改为当前值; 或者当 CIR Tag为 0时, 直接修改报文的 VLAN优先级。
Priority 2: 当 CIR Tag为 1 , 且流量高于 CIR门限值时将 VLAN优先级
^ί'爹改为当前值。
即对低于 PIR门限值的流量都可以修改优先级, 而对于低于 CIR门限值 或高于 CIR门限值的流量可以根据需要修改优先级, 修改优先级是为了保证 不同等级的业务按照不同的顺序进行调度。
本实施例中, 底层芯片收到 OMCI设置的命令后, 可以首先进行 PIR实 现, 即在 U I入口对总速率进行限制, 以丟弃掉超过 PIR流量的报文。 之后 的流程请参考图 1所示, 包括以下处理过程:
步骤 11 ,报文匹配。通过压缩字段处理器( Compact Field Processor, CFP ) 功能对从 UNI 口进来的报文进行匹配, 该报文可以基于 VLAN值、 Pirority 优先级值, 或者是以太网类型进行区分。
步骤 12, CIR速率检测。 通过 CFP的流量表(METER)功能来标识 CIR 速率, METER 功能可以区分出配置速率的带内(In— Band)和带夕卜 (Out— Band) 流量, 带外流量为 Rate— Violation , 带内流量为 None Rate— Violation。
步骤 13 ,读取 CIR标签, 当 CIR标签为 0时转步骤 14; 当 CIR标签为 1 时转步骤 15。
步骤 14, CIR门限仅用于限速 ( Priority 1有效, Priority2无效)时。 此时 对带内流量进行 Priority 1 的修改, 对带外流量直接进行丟弃。 这样实际达到 的效果就是该报文被限制了 CIR的速率。
步骤 15, CIR用于流量标识, 进行优先级修改( Priority 1和 Priority2有 效)时。 此时对带内和带外流量均进行修改 Priority的操作。 但是在芯片的出 口方向对带外的流量做了从 Priority 1到 Priority2的映射, 这个映射是通过对 Rate— Violation的报文及带外报文设置了 Priorityl到 Priority2的映射来实现。 比如前文提到的对 HIS ( Priority 1=6 )、 IPTV ( Priorityl =5 )、 VOD ( Priority 1=4 ) 业务的带外报文优先级分别修改为 Priority2 = 3、 2、 1。
本发明提供的基于 G比特无源光网络 GPON系统的端到端 QoS控制方 法,使 ONT可以在数据上行方向检测各种业务流量, 并根据是否超过设定的 CIR门限值, 来决定降低此业务优先级的方案以保证用户流的 CIR部分, 对 于介于 CIR 门限值和 PIR 门限值之间部分则根据网络拥塞程度而转发或通 过, 同时对于超过 PIR门限的数据流实行直接丟弃; 上述方式可以有效地利 用用户带宽, 在流量不冲突情况下, 最大限度满足用户需求; 并在发生拥塞 情况下, 保证高优先级业务通过的同时不影响低优先级业务, 同时实现了系 统尽可能地发送剩余流量。
实施三:
如图 2所示,为基于 G比特无源光网络 GPON系统的端到端 QoS控制装 置, 该装置包括: 门限设置单元 21 , 其设置为设置承载业务通道的 CIR门限 和 PIR门限, 其中 PIR门限值大于 CIR门限值; 上行速率比较单元 22, 其设 置为比较通过承载业务通道上行的数据包传输速率与该承载业务通道设置的 CIR门限值和 PIR门限值; 数据包控制单元 23 , 其设置为根据所述上行速率 比较单元输出的速率和门限值比较结果完成对上行的数据包的控制。
其中, 为了对上行的数据包进行控制, 该数据包控制单元 23可以包括: 第一控制子单元, 其设置为当通过承载业务通道上行的数据包传输速率 小于该通道的 CIR门限值时, 正常上行数据包;
第二控制子单元, 其设置为当通过承载业务通道上行的数据包传输速率 介于所述承载业务通道的 CIR门限值和 PIR门限值之间时, 对所述上行的数 据包进行流量控制; 以及
第三控制子单元, 其设置为当通过承载业务通道上行的数据包传输速率 大于 PIR门限值时, 丟弃超过所述 PIR门限值的上行的数据包。
另外, 上述第二控制子单元是设置为当通过承载业务通道上行的数据包 传输速率介于所述承载业务通道的 CIR门限值和 PIR门限值之间时, 降低上 行数据包的优先级, 根据网络拥塞程度丟弃介于所述 CIR门限值和 PIR门限 值之间的数据包或者上行传输所述数据包; 以及在光网络终端直接丟弃介于 所述 CIR门限值和 PIR门限值之间的上行的数据包。
另外, 所述门限设置单元是设置为在设置 CIR门限和 PIR门限时, 每个 用户的所有承载业务通道的 CIR门限值之和不超过该用户传输容器 Tcont的 保证带宽; 每个用户的所有承载业务通道的 PIR 门限值之和不超过该用户 Tcont的最大带宽。
本发明提供的基于 G比特无源光网络 GPON系统的端到端 QoS控制装 置, 可以在数据上行方向检测各种业务流量, 并根据是否超过设定的 CIR门 限值, 来决定降低此业务优先级的方案以保证用户流的 CIR部分, 对于介于 CIR门限值和 PIR门限值之间部分则根据网络拥塞程度而转发或通过, 同时 对于超过 PIR门限值的数据流实行直接丟弃; 上述方式可以有效地利用用户 带宽, 在流量不冲突情况下, 最大限度满足用户需求; 并在发生拥塞情况下, 保证高优先级业务通过的同时不影响低优先级业务, 同时实现了系统尽可能 地发送剩余流量。
以上内容是结合具体的实施方式对本发明所作的进一步详细说明, 不能 认定本发明的具体实施只局限于这些说明。 对于本发明所属技术领域的普通 技术人员来说, 在不脱离本发明构思的前提下, 还可以做出若干简单推演或 替换, 都应当视为属于本发明的保护范围。
工业实用性
本发明提供的基于 GPON系统的端到端 QoS控制方法和装置,可以有效 地利用用户带宽, 在流量不冲突的情况下, 最大限度地满足用户的需求; 并 在发生拥塞的情况下, 保证高优先级业务通过的同时不影响低优先级业务, 同时实现了系统尽可能地发送剩余流量; 有效灵活地解决了系统可能发生的 网络拥塞问题。

Claims

权 利 要 求 书
1、一种基于 G比特无源光网络 GPON系统的端到端业务质量控制方法, 所述方法包括:
对每个承载业务通道设置承诺信息速率 CIR门限和峰值信息速率 PIR门 限, 其中 PIR门限值大于 CIR门限值;
当通过所述承载业务通道上行的数据包传输速率小于所述承载业务通道 的 CIR门限值时, 正常上行传输所述数据包;
当通过承载业务通道上行的数据包传输速率介于所述承载业务通道的 CIR门限值和 PIR门限值之间时, 对所述上行的数据包进行流量控制; 以及 当通过承载业务通道上行的数据包传输速率大于所述承载业务通道的 PIR门限值时, 丟弃超过所述 PIR门限值的上行的数据包。
2、根据权利要求 1所述的方法, 其中, 在所述设置 CIR门限和 PIR门限 的步骤中, 设置每个用户的所有承载业务通道的 CIR门限值之和不超过该用 户传输容器 Tcont的保证带宽; 设置每个用户的所有承载业务通道的 PIR门 限值之和不超过该用户 Tcont的最大带宽。
3、 权利要求 1或 2所述的方法, 其中, 所述对所述上行的数据包进行流 量控制的步骤包括: 降低所述上行的数据包的优先级, 或者根据网络拥塞程 度丟弃介于所述 CIR门限值和 PIR门限值之间的数据包, 或者上行传输所述 数据包。
4、 权利要求 1或 2所述的方法, 其中, 所述对所述上行的数据包进行流 量控制的步骤包括: 在光网络终端直接丟弃介于所述 CIR门限值和 PIR门限 值之间的上行的数据包。
5、 权利要求 1或 2所述的方法, 其中, 在所述对每个承载业务通道设置 CIR门限和 PIR门限的步骤中, 先在光线路终端配置界面远程设置, 然后通 过光网络终端管理控制接口 OMCI消息将所述设置发送到光网络终端, 由所 述光网络终端完成各承载业务通道的 CIR门限和 PIR门限设置。
6、一种基于 G比特无源光网络 GPON系统的端到端业务质量控制装置, 所述装置包括: 门限设置单元,其设置为设置承载业务通道的承诺信息速率 CIR门限和 峰值信息速率 PIR门限, 其中 PIR门限值大于 CIR门限值;
上行速率比较单元, 其设置为比较通过承载业务通道上行的数据包传输 速率与所述承载业务通道设置的 CIR门限值和 PIR门限值; 以及
数据包控制单元, 其设置为根据所述上行速率比较单元输出的速率和门 限值比较结果完成对上行数据包的控制。
7、 权利要求 6所述的装置, 其中, 所述数据包控制单元包括: 第一控制子单元, 其设置为当通过承载业务通道上行的数据包传输速率 小于所述承载业务通道的 CIR门限值时, 正常上行传输所述数据包;
第二控制子单元, 其设置为当通过承载业务通道上行的数据包传输速率 介于所述承载业务通道的 CIR门限值和 PIR门限值之间时, 对所述上行的数 据包进行流量控制; 以及
第三控制子单元, 其设置为当通过承载业务通道上行的数据包传输速率 大于所述承载业务通道的 PIR门限值时, 丟弃超过所述 PIR门限值的上行的 数据包。
8、 权利要求 7所述的装置, 其中, 所述第二控制子单元是设置为: 当通 过承载业务通道上行的数据包传输速率介于所述承载业务通道的 CIR门限值 和 PIR门限值之间时, 降低所述上行的数据包的优先级, 或者根据网络拥塞 程度丟弃介于所述 CIR门限值和 PIR门限值之间的数据包, 或者上行传输所 述数据包。
9、 权利要求 7所述的装置, 其中, 所述第二控制子单元是设置为: 当通 过承载业务通道上行的数据包传输速率介于所述承载业务通道的 CIR门限值 和 PIR门限值之间时, 在光网络终端直接丟弃介于所述 CIR门限值和 PIR门 限值之间的上行的数据包。
10、 权利要求 6 - 9任一项所述的装置, 其中, 所述门限设置单元是设置 为: 在设置 CIR门限和 PIR门限时, 每个用户的所有承载业务通道的 CIR门 限值之和不超过该用户传输容器 Tcont的保证带宽; 每个用户的所有承载业 务通道的 PIR门限值之和不超过该用户 Tcont的最大带宽。
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102223265A (zh) * 2011-06-15 2011-10-19 北京星网锐捷网络技术有限公司 修改报文的转发方法、报文修改的测试方法、装置及系统
TWI707552B (zh) * 2019-12-09 2020-10-11 中華電信股份有限公司 保護光纖通道電路供裝方法及伺服器
CN114499735A (zh) * 2020-11-12 2022-05-13 中国电信股份有限公司 业务传输方法、系统和计算机可读存储介质

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102883457B (zh) * 2011-07-15 2016-06-22 华为技术有限公司 保证上行服务质量的方法、基站及用户设备
CN102932274B (zh) * 2011-08-11 2015-12-09 中磊电子(苏州)有限公司 路由器的带宽控制方法
CN103220232A (zh) * 2012-01-19 2013-07-24 北京千橡网景科技发展有限公司 数据拥塞控制方法和设备
CN102694740B (zh) * 2012-06-28 2015-10-28 迈普通信技术股份有限公司 一种队列调度方法和装置
CN111782395B (zh) * 2020-06-30 2024-01-05 北京思特奇信息技术股份有限公司 一种消息处理的分流控制方法和系统

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040208125A1 (en) * 2003-04-16 2004-10-21 International Business Machines Corporation Method and system for oversubscribing bandwidth in a communications network
US20060176818A1 (en) * 2005-02-08 2006-08-10 Cisco Technology, Inc. Methods and apparatus for allowing promotion in color-based policers
CN1893389A (zh) * 2005-07-06 2007-01-10 华为技术有限公司 一种流调度方法
EP2040420A1 (en) * 2007-09-20 2009-03-25 Lucent Technologies Inc. Method and device for shaping a stream of frames of user traffic, as well as computer network

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040208125A1 (en) * 2003-04-16 2004-10-21 International Business Machines Corporation Method and system for oversubscribing bandwidth in a communications network
US20060176818A1 (en) * 2005-02-08 2006-08-10 Cisco Technology, Inc. Methods and apparatus for allowing promotion in color-based policers
CN1893389A (zh) * 2005-07-06 2007-01-10 华为技术有限公司 一种流调度方法
EP2040420A1 (en) * 2007-09-20 2009-03-25 Lucent Technologies Inc. Method and device for shaping a stream of frames of user traffic, as well as computer network

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
HEINANEN J. ET AL: "A Two Rate Three Color Marker", IETF. REQUEST FOR COMMENTS:2698, September 1999 (1999-09-01), Retrieved from the Internet <URL:http:www.ietf.org/rfc/rfc2698.txt> *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102223265A (zh) * 2011-06-15 2011-10-19 北京星网锐捷网络技术有限公司 修改报文的转发方法、报文修改的测试方法、装置及系统
TWI707552B (zh) * 2019-12-09 2020-10-11 中華電信股份有限公司 保護光纖通道電路供裝方法及伺服器
CN114499735A (zh) * 2020-11-12 2022-05-13 中国电信股份有限公司 业务传输方法、系统和计算机可读存储介质
CN114499735B (zh) * 2020-11-12 2024-02-13 中国电信股份有限公司 业务传输方法、系统和计算机可读存储介质

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