WO2007082478A1 - Procédé permettant d'établir une correspondance entre un flux de service et un canal de transmission de service, système et terminateur de réseau optique associés - Google Patents

Procédé permettant d'établir une correspondance entre un flux de service et un canal de transmission de service, système et terminateur de réseau optique associés Download PDF

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Publication number
WO2007082478A1
WO2007082478A1 PCT/CN2007/000193 CN2007000193W WO2007082478A1 WO 2007082478 A1 WO2007082478 A1 WO 2007082478A1 CN 2007000193 W CN2007000193 W CN 2007000193W WO 2007082478 A1 WO2007082478 A1 WO 2007082478A1
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WO
WIPO (PCT)
Prior art keywords
service
service flow
packet
transmission channel
feature
Prior art date
Application number
PCT/CN2007/000193
Other languages
English (en)
French (fr)
Inventor
Wei Wu
Hai Gao
Lehong Niu
Weilong Ouyang
Original Assignee
Huawei Technologies Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN2006100775693A external-priority patent/CN101005445B/zh
Priority claimed from CNA2006100810964A external-priority patent/CN101079801A/zh
Application filed by Huawei Technologies Co., Ltd. filed Critical Huawei Technologies Co., Ltd.
Priority to ES07702125.1T priority Critical patent/ES2454965T3/es
Priority to EP07702125.1A priority patent/EP1978654B1/en
Publication of WO2007082478A1 publication Critical patent/WO2007082478A1/zh
Priority to US12/175,324 priority patent/US8189471B2/en

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04JMULTIPLEX COMMUNICATION
    • H04J3/00Time-division multiplex systems
    • H04J3/16Time-division multiplex systems in which the time allocation to individual channels within a transmission cycle is variable, e.g. to accommodate varying complexity of signals, to vary number of channels transmitted
    • H04J3/1694Allocation of channels in TDM/TDMA networks, e.g. distributed multiplexers
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00Data switching networks
    • H04L12/28Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/2854Wide area networks, e.g. public data networks
    • H04L12/2856Access arrangements, e.g. Internet access
    • H04L12/2858Access network architectures
    • H04L12/2861Point-to-multipoint connection from the data network to the subscribers
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00Data switching networks
    • H04L12/28Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/2854Wide area networks, e.g. public data networks
    • H04L12/2856Access arrangements, e.g. Internet access
    • H04L12/2869Operational details of access network equipments
    • H04L12/2878Access multiplexer, e.g. DSLAM
    • H04L12/2879Access multiplexer, e.g. DSLAM characterised by the network type on the uplink side, i.e. towards the service provider network
    • H04L12/2885Arrangements interfacing with optical systems
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04QSELECTING
    • H04Q11/00Selecting arrangements for multiplex systems
    • H04Q11/0001Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0062Network aspects
    • H04Q11/0067Provisions for optical access or distribution networks, e.g. Gigabit Ethernet Passive Optical Network (GE-PON), ATM-based Passive Optical Network (A-PON), PON-Ring
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00Data switching networks
    • H04L12/28Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/2854Wide area networks, e.g. public data networks
    • H04L12/2856Access arrangements, e.g. Internet access
    • H04L12/2869Operational details of access network equipments
    • H04L12/2878Access multiplexer, e.g. DSLAM
    • H04L12/2887Access multiplexer, e.g. DSLAM characterised by the offered subscriber services
    • H04L12/289Single service
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04QSELECTING
    • H04Q11/00Selecting arrangements for multiplex systems
    • H04Q11/0001Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0062Network aspects
    • H04Q2011/0084Quality of service aspects

Definitions

  • the present invention relates to the field of optical network technologies, and in particular, to a method, system, and optical network terminal for mapping a service flow to a service transmission channel.
  • the current broadband access technology is mainly divided into a copper access technology and an optical access technology.
  • the access network implemented by the optical access technology is called an optical access network (OAN).
  • OAN optical access network
  • Passive Optical Network (PON) technology is a point-to-multipoint optical access technology.
  • GPON Gigabit-based Passive Optical Network
  • FIG. 1 is a schematic diagram of a structure of a PON system in the prior art.
  • the PON system mainly includes an optical line termination (OLT), an optical distribution network (ODN), and an optical network unit (ONU).
  • OLT optical line termination
  • ODN optical distribution network
  • ONU optical network unit
  • the OLT is configured to provide a network side interface (SNI) for the OAN and connect one or more ODNs.
  • the ODN is used to transmit the downlink data of the OLT to each ONU through the optical branch, and transmit the uplink data of the ONU to the ONU.
  • OLT; OJ is used to provide a user-side interface (UNI) for OAN and is connected to the ODN.
  • the ONU can provide functions such as an Ethernet (Ethernet) user port or a Plain Old Telephone Service (POTS) user port, it is called an Optical Network Terminator (ONT).
  • ONT Optical Network Terminator
  • OMCI ONT Management and Control Interface
  • OMCI data is encapsulated into ATM letters through the OMCI Adapter (OMCI Adapter) just like normal business data. Meta or GEM data blocks are transmitted.
  • the ⁇ -CONT internally multiplexes the service flow through the Gigabit Passive Optical Network Encapsulation Port (GEM PORT), and each GEM PORT is assigned a GEM PORT ID (GEM PORT-ID);
  • GEM PORT-ID GEM PORT ID
  • the T-CONT internally multiplexes the service flow through the permanent virtual path/permanent virtual channel (PVP/PVC), and each PVP/PVC is assigned a virtual path identifier/virtual channel identifier (VPI/VCI).
  • the DBA Control module (DBA Control) in the GTC layer implements dynamic bandwidth allocation for each ONT by monitoring and managing all T-CONTs.
  • the GEM encapsulation method is described below, but all descriptions are equally applicable to ATM encapsulation.
  • the ONT includes a medium access control (MAC, Media Access Control) bridge module and an 802.1p priority mapping module, and the MAC bridge module can also be a simple Ethernet port. With modules.
  • MAC medium access control
  • 802.1p priority mapping module the MAC bridge module can also be a simple Ethernet port.
  • the MAC bridge module implements the Ethernet switching function and supports the access of multiple Ethernet ports.
  • the MAC bridge module receives Ethernet packets from the external Ethernet port P1, port P2, and port P3, and exchanges Ethernet packets to the internal Ethernet port connected to the 802.1p priority mapping module through the internal Ethernet switching function. P0.
  • the 802.1p priority mapping module receives the Ethernet type service flow from the internal Ethernet port, and maps the Ethernet packets with different 802.1p priorities to different GEM PORTs or multiple 802.1p priority Ethernet packets. Map to a GEM PORT.
  • the specific 802.1p priority mapping operation is implemented by the OLT scheduling ONT.
  • the OLT instructs the ONT to process the 802.1p priority Ethernet packets mapped to which GEM through the OMCI channel.
  • the OLT manages the ONT data into a protocol.
  • the protocol-independent Management Information Base (MIB) the basic information unit of the management information base is a management entity (ME). Root
  • MIB Management Information Base
  • ME management entity
  • Root According to various types of configurations of the ONT, OMCI defines the MEs that the OLT controls the ONTs, and the ONTs implement the configuration management functions of the MEs under the control of the OLT.
  • ONT In the current GPON technical standard, ONT simply supports the mapping of Ethernet packets to GEM PORTs through 802.1p priority. It does not support the mapping of other packet features to different GEM PORTs.
  • each ONT can access one or more multicast users.
  • the OLT performs authentication processing, and after the authentication is passed, applies to the multicast source server on the network side.
  • the OLT periodically sends IGMP Query messages to the multicast users to check whether the multicast users are online. Both IGMP request messages and IGMP query messages can be called IGMP control messages.
  • IGMP control messages are generally mixed with data services such as the Internet. Because the priority of the data service such as the Internet is low, the bandwidth is effectively guaranteed, and the quality of service (QoS) of the IGMP control packet is not guaranteed, which directly affects the performance of the multicast service.
  • QoS quality of service
  • the above only describes the transmission of IGMP control messages.
  • other uplink control messages also have the above problems.
  • the other uplink control messages include: Ethernet bearer PPP (PPPoE) control packets, Dynamic Host Configuration Protocol (DHCP) control packets, and Session Initiation Protocol (SIP) control packets.
  • PPPoE Ethernet bearer PPP
  • DHCP Dynamic Host Configuration Protocol
  • SIP Session Initiation Protocol
  • an embodiment of the present invention provides a method for mapping a service flow to a service transmission channel in a passive optical network system.
  • a method for mapping a service flow to a service in a passive optical network system is provided.
  • the system of the transmission channel and the optical network terminal can map the service flow to different service transmission channels according to the packet characteristics of the service flow, and ensure the segmentation service.
  • the ONT After receiving the service flow, the ONT determines that the service flow matches the configured packet feature, and maps the service flow to the specified service transmission channel.
  • a system for mapping a service flow to a service transmission channel where the system includes: an ONT and an OLT,
  • the OLT is configured to receive a packet feature configuration parameter from the configuration terminal, and send the feature configuration parameter to the ONT after processing;
  • the ONT is configured to receive and configure a packet feature configuration parameter sent by the OLT. After receiving the service flow, determining that the received service flow matches the configured packet feature, the service flow is Maps to the specified service transport channel.
  • the optical network terminal ONT provided by the embodiment of the present invention includes: a service processing module and a general service flow mapping module,
  • the service processing module is configured to receive a service flow from the user side, and send the received service flow to the universal service flow mapping module;
  • the general service flow mapping module is configured to configure a packet feature configuration parameter sent by the OLT, receive a service flow from the service processing module, and determine that the received service flow matches the configured message feature, The service flow is mapped to a service transmission channel in the specified optical network protocol processing module.
  • the method, the system, and the optical network terminal for mapping the service flow to the service transmission channel provided by the embodiment of the present invention, by configuring the determined parameter configuration parameter to the ONT, when the ONT determines the received service flow and the configured report When the feature is matched, the service flow matching the configured packet feature is mapped to the specified service transmission channel.
  • the method, system, and optical network terminal provided by the embodiments of the present invention can support mapping service flows to different service transmission channels according to any preset packet characteristics, thereby ensuring the QOS requirements of the subdivided service flows.
  • the optional packet features include: 802.1p priority, VLAN ID, DSCP domain of the IP layer, IP or MAC source address, IP or MAC destination address, protocol type, TCP UDP port number, and so on.
  • FIG. 1 is a schematic structural diagram of a PON system of the prior art
  • FIG. 2 is a schematic structural diagram of an ONT that carries an Ethernet service in the prior art
  • FIG. 3 is a schematic diagram of transmission of a multicast service in the prior art
  • FIG. 4 is a flowchart of a method for mapping a service flow to a service transmission channel according to the first embodiment of the present invention
  • FIG. 5 is a flowchart of a method for mapping a service flow to a service transmission channel according to a second embodiment of the present invention
  • 6a is a schematic diagram of a T-CONT allocation model in an embodiment of the present invention.
  • 6b is a schematic diagram of a T-CONT allocation model in the embodiment of the present invention.
  • 6c is a schematic diagram of a T-CONT allocation model in the embodiment of the present invention.
  • FIG. 6d is a schematic diagram of a fourth T-CONT allocation model in the embodiment of the present invention.
  • FIG. 7 is a schematic structural diagram of an ONT according to an embodiment of the present invention.
  • FIG. 8a is a first ME relationship diagram of the present invention for supporting general service flow mapping
  • FIG. 8b is a second ME relationship diagram of the present invention supporting a general service flow mapping
  • FIG. 9 is a flowchart of a configuration of a general service flow mapping according to an embodiment of the present invention
  • FIG. 10 is a flowchart of canceling a general service flow mapping configuration according to an embodiment of the present invention. Mode for carrying out the invention
  • the method for mapping a service flow to a service transmission channel includes: configuring a packet feature configuration parameter in a UI; and after receiving the service flow, determining that the service flow matches the configured message feature When the service flow is mapped to a specified service transmission channel.
  • FIG. 4 is a flowchart of a method for mapping a service flow to a service transmission channel according to the first embodiment of the present invention, where the process includes the following steps:
  • Step 401 Configure the determined message feature configuration parameter into the UI.
  • Each of the message feature configuration parameters includes: a message feature, a packet feature offset byte number, and an identifier of the specified service transmission channel.
  • the message feature is the value of a feature field in the message data frame.
  • the value of the message feature is 4 bytes (00001010, 00001011, 00000001, 00000001).
  • the packet feature offset byte number is the number of offset bytes of the packet feature field from the packet header.
  • the source IP address field has an offset byte number of 26 from the Ethernet packet header.
  • the packet features in the embodiment of the present invention may include: an Ethernet source address and an Ethernet source address segment, an Ethernet destination address, an Ethernet destination address segment, a VLAN ID, an 802.1p priority, an IP source address, and a source IP address segment. , destination IP address and destination IP address segment, IP DSCP domain, IP protocol type, TCP/UDP port number, and so on.
  • the message feature set can be continuously expanded to include the message characteristics in the general message feature representation method.
  • the length of the message feature is not limited, but in practical applications, in order to facilitate hardware processing, the characteristics of the message
  • the length is preferably an integer power of 2, such as 4, 8, 16 bytes, and the like.
  • the service transmission channel can be a GEM PORT or a FV /PV (in ATM package).
  • Step 402 After receiving the service flow, the ONT performs the first packet feature matching operation. If the message feature is successfully matched, step 403 is performed; NO! 'j performs step 404.
  • the specific process of the first packet feature matching operation is as follows: determining, according to the number of packet feature offset bytes in the configured packet feature configuration parameter, the service flow data frame has the same characteristics as the corresponding packet a partial byte of the number of bytes, and compares it with the corresponding message feature. If the two match, that is, the two are consistent, step 403 is performed; if the ONT determines all the configured message features and the service flow If the corresponding bytes do not match, step 404 is performed.
  • the method further includes: determining, by the ONT, whether the device supports the common service flow mapping operation, and if yes, performing the packet feature matching process; otherwise, mapping all the received service flows to Fixed service transmission channel.
  • Step 403 Stop the comparison operation, and map the service flow that meets the packet characteristics to the service transmission channel specified for the corresponding message feature.
  • the method may further include: re-marking the priority of the service flow; or
  • the steps of mapping a flow to a specified service transport channel are: mapping the traffic flow to a specified service transport channel based on the re-marked priority.
  • Step 404 The ONT performs an error alarm process, and ends the operation; or maps the service flow to a corresponding service transmission channel according to a preset default mapping method.
  • step 404 is an optional step.
  • the method shown in Figure 4 can satisfy the hard If the packet feature is not a contiguous byte in the message, but two separate segments of the segment, such as a packet with the same source IP address and TCP port number, the packet is shown in Figure 4. The method cannot be implemented. For the case where the message feature is not a contiguous byte in the message, the message feature byte is filtered.
  • the representation of the message feature mask may be a 1 matching representation or a 0 matching. In the 1 matching mode, the feature bit that is really needed in the character field is 1 and the feature bit that is not needed in the middle is 0. In the 0 match representation mode, the feature bit that is really needed is 0, which is not needed in the middle.
  • the feature bit is 1. Therefore, the message characteristics that are really needed can be obtained by performing a bitwise AND operation on the mask of the message feature field and the message feature. In this way, by combining the packet characteristics, the mask of the message feature, and the number of bytes of the packet feature offset, it is convenient, flexible, and fast to determine any packet characteristics in the message, including the aforementioned 9 Kind ⁇ : ⁇ ⁇ features and other message features.
  • FIG. 5 is a flowchart of a method for mapping a service flow to a service transmission channel according to a second embodiment of the present invention, where the process includes the following steps:
  • Step 501 Configure the determined packet feature configuration parameter into the ONT.
  • Each of the message feature configuration parameters includes: a message feature, a packet feature offset byte number, a message feature mask, and an identifier of the specified service transmission channel.
  • the mask of the message feature is represented by a matching representation.
  • the 4 ⁇ character has 4 bytes, and the value corresponding to 10.11.1.1 is (00001010, 00001011). , 00000001, 00000001)
  • the mask of the message feature can be designed as (11111111, 11111111, 11111111, 00000000), and the mask and message characteristics of the message feature are bitwise and operated, and the obtained operation result is expressed.
  • Step 502 After receiving the service flow, the ONT performs a second packet feature matching operation. If the packet feature is successfully matched, step 503 is performed; otherwise, step 504 is performed.
  • the specific process of the second packet feature matching operation is as follows: the mask of the packet feature and the corresponding packet feature in the configured packet feature configuration parameter are bitwise and operated one by one to obtain the first operation result. And in the service flow data frame determined according to the corresponding packet feature offset byte number, the partial byte having the same number of bytes as the corresponding message feature and the mask of the corresponding message feature are bitwise and operated.
  • step 503 Obtaining a second operation result, comparing the first operation result and the second operation result, if the two match, that is, the two are consistent, step 503 is performed; if the ONT determines the obtained according to all configured message feature configuration parameters If the first operation result and the second operation result do not match, step 504 is performed.
  • the method further includes: determining, by the ONT, whether the device supports the common service flow mapping operation, and if yes, performing the packet feature matching process; otherwise, mapping all the received service flows to Fixed service transmission channel.
  • Step 503 Stop the comparison operation, and map the service flow to a service transmission channel specified for the corresponding message feature.
  • the method may further include: re-marking the priority mark of the service flow; or mapping the service flow that meets the packet feature to the specified service Before the transmission channel, the method further includes: re-marking the priority of the service flow; in this case, the step of mapping the service flow conforming to the message feature to the designated service transmission channel is: according to the priority of the re-marking The service flow is mapped to a designated service transmission channel.
  • Step 504 The ONT performs an error alarm process, and ends the operation; or maps the service flow to a corresponding service transmission channel according to a preset default mapping method.
  • Step 504 shown in this embodiment is an optional step.
  • the method shown in Figure 5 is equally applicable to the case where the message feature is a contiguous byte in the message.
  • the packet feature and the service transmission channel in the embodiment shown in FIG. 5 have the same selection manner as the embodiment shown in FIG. 4, and details are not described herein again.
  • the method shown in the embodiment of FIG. 4 and FIG. 5 can be applied to the uplink transmission of the control message.
  • the ONT After receiving the service flow, the ONT performs a packet feature matching operation, and maps the control packet service flow and the data packet service flow in the service flow to different transmission channels for transmission, thereby ensuring the control report. High QOS requirements for text traffic.
  • the first method can be used to: map the control packet service flow that matches the configured packet characteristics to the high-priority service transmission channel.
  • mapping the control packet service flows to the high-priority transmission channels is: mapping the control packet service flows of all users to In the high priority queue of the same T-CONT;
  • mapping of the control packet service flows to the high-priority transmission channels is: mapping the control packet service flows of the respective users to the respective In the high priority queue of the T-CONT corresponding to each user.
  • the second mode that can be used to control the high-priority transmission of the packet service traffic is to map the control packet service flow and the data packet service flow that match the configured packet characteristics to different service transmissions.
  • the ONT sets the service transmission channel to which the control packet service flow is mapped to a high priority.
  • the method for setting the service transmission channel to which the control packet service flow is mapped to the high priority includes:
  • the ONT sets the Type Type of the T-CONT to which the control packet service flow is mapped to Type 2.
  • the third mode that can be used to control the high-priority transmission of the packet service flow is to map the control packet service flow and the data packet service flow that match the configured packet characteristics to different services. After the transmission channel, the control packet service flow is processed with high priority on the OLT.
  • the high priority processing of the control packet service flow on the OLT includes: OLT
  • the received control packet service flow is sent to the network side, and the priority of the control packet service flow is set to be high.
  • the setting the priority of the control packet service flow to be high includes: setting 802.1p of the control packet service flow to a high priority.
  • the following takes IGMP control messages as an example, and combines the four T-CONT allocation modes shown in Figure 6a, Figure 6b, Figure 6c, and Figure 6d to detail the transmission of IGMP control messages and data messages on the ONT. Description.
  • the ONT maps all user control messages to the same high-priority queue of the T-CONT.
  • the specific process is as follows: For all users, after the ONT receives the service flow from the user side, the method of Figure 4 or Figure 5 is used to map the IGMP control messages and data packets in the service flow to the same T-CONT. In the priority queue, it is sent to the OLT. The priority of the IGMP control packet is higher than the priority of the data packet. That is, the IGMP control packet is mapped to the high priority queue of the T-CONT.
  • the ONT maps the control messages of the respective users to the high priority queue of the T-CONT corresponding to each user.
  • the ONT uses the method of FIG. 4 or FIG. 5 to map the IGMP control message and the data packet in the service flow to the same T-
  • the CONT's different priority queues are sent to the OLT.
  • the priority of the IGMP control packet is higher than the priority of the data packet. That is, the IGMP control packet is mapped to the high priority queue of the T-CONT.
  • the ONT sets the type of the T-CONT of all user control messages to Type 2.
  • the specific process is as follows: For all users, after receiving the service flow from the user side, the ONT maps the IGMP control messages and data packets in the service flow to different T-CONTs by using the method provided in the embodiment of FIG. 4 or FIG. In the queue, it is sent to the OLT, and the T-CONT type corresponding to the IGMP control message is set to Type 2.
  • the ONT sets the type of the T-CONT of each user's control message to Type 2.
  • the specific process is as follows: For each user, after receiving the service flow from the user side, the ONT maps the IGMP control message and the data packet in the service flow to different T-CONTs by using the method provided in the embodiment of FIG. 4 or FIG. In the queue, it is sent to the OLT, and the T-CONT type corresponding to the IGMP control message is set to Type 2.
  • the method provided by the embodiment of the present invention can enable the uplink control message to be transmitted in time, thereby ensuring the QOS requirement of the control message.
  • the embodiment of the present invention also provides a system for mapping a service flow to a service transmission channel, where the system includes: an ONT and an OLT, where
  • the OLT is configured to receive a packet feature configuration parameter sent by the configuration terminal, process the packet feature configuration parameter, and send the determined packet feature configuration parameter to the ONT;
  • the ONT is configured to configure a packet feature configuration parameter sent by the OLT, and after receiving the service flow from the user side, when determining that the received service flow matches the configured feature, The service flow is mapped to a specified service transmission channel.
  • the ONT may be further configured to re-mark the priority of the service flow when mapping the service flow to a specified service transmission channel; or further, before mapping the service flow to a designated service transmission channel, further A priority for re-marking the service flow, and determining a specified service transmission channel according to the re-marked priority.
  • FIG. 7 is a schematic structural diagram of an ONT according to an embodiment of the present invention.
  • the ONT in the system for mapping a service flow to a service transmission channel according to an embodiment of the present invention includes: a service processing module and a general service flow mapping module,
  • the service processing module is configured to receive a service flow from the user side, and send the received service flow to the universal service flow mapping module;
  • the general service flow mapping module is configured to configure a packet feature configuration parameter sent by the OLT, and receive a service flow from the service processing module, and when determining that the received service flow matches the configured message feature, The service flow is mapped to a specified service transmission channel.
  • the general service flow mapping module may be further configured to: when mapping the service flow to a specified service transmission channel, re-mark the priority flag of the service flow; or map the service flow to a specified service. Before the transmission channel, it is further used to re-mark the priority of the service flow, and determine the specified service transmission channel according to the re-marked priority.
  • the general service flow mapping module includes: a message feature configuration module, a message feature matching module, and a service flow mapping module.
  • the message feature configuration module is configured to receive and configure a message feature configuration parameter from the service processing module
  • the packet feature matching module is configured to receive a service flow from the service processing module, and match the service flow with the configured packet feature of the packet feature configuration module, when the two match, Stop the comparison operation, and send a service flow mapping instruction to the service flow mapping module;
  • the service flow mapping module receives a service flow mapping instruction from the feature matching module, and maps the service flow to a specified service transmission channel.
  • the message feature matching module may be: a first message feature matching module, configured to receive a service flow from the service processing module, and according to one by one The packet feature offset byte number configured by the packet feature configuration module determines a partial byte having the same number of bytes as the corresponding packet feature in the service flow data frame, and the corresponding packet feature For comparison, when the two match, the comparison operation is stopped, and a mapping instruction is sent to the service flow mapping module.
  • the packet feature matching module may be: a second packet feature matching module, configured to receive a service flow from the service processing module, where the packet feature is a contiguous byte or a non-contiguous byte in the packet. , "By the bitwise operation of the configured packet feature and the corresponding mask one by one, to obtain the first operation result, and the service flow data frame determined according to the corresponding packet feature offset byte number has The part of the message having the same number of bytes of the message and the mask are bitwise AND operated, and the second operation result is obtained, and the first operation result and the second operation are compared, and when the two match, the comparison operation is stopped. And sending a mapping instruction to the service flow mapping module.
  • the universal service flow mapping module may further include: a priority determining module.
  • the service flow mapping module is further configured to send a priority determination instruction to the priority determining module; receive feedback information from the priority determining module, and map the service flow to a specified service transmission channel;
  • the priority determining module receives a priority determining instruction from the service flow mapping module, determines a priority of marking the service flow, and sends feedback information to the service flow mapping module; or re-marks the service flow Priority, determining the specified service transmission channel according to the re-marked priority, and sending feedback information to the service flow mapping module.
  • the generic traffic flow mapping module receives the ether from the internal Ethernet port connected to the MAC bridge.
  • the network packet is classified according to the packet characteristics in the configuration parameters of the configured service flow packet, and the Ethernet packets with different packet characteristics are directly mapped into different service transmission channels. You can re-mark the priority of the service flow at the same time, or re-mark the Ethernet packets with different packet characteristics to different priorities, and map the packets to different GEM PORTs according to the re-marked packet priority flag. in.
  • Different GEM PORTs are aggregated into one T-CONT or transmitted through a separate T-CONT. Under the scheduling of the T-CONT by the OLT, the ONT sends data to the OLT based on the T-CONT.
  • the OLT is responsible for sending the packet feature configuration parameters to the general service flow mapping module of the ONT.
  • the specific implementation method is as follows: The OLT sends the packet feature configuration parameters to the general service flow mapping module through the OMCI message.
  • the 802.1p mapping policy table ME (802.1 mapper service profile) in the GPON standard to map the service flows of different features to GEM PORT or PVP/PVC.
  • the 802.1p mapping policy table ME is based on 802.1p. Eight different values define the corresponding GEM Interworking Termination Point (ME) pointer for each 802. lp value.
  • ME GEM Interworking Termination Point
  • the IP address is used as the packet feature
  • the number of IP addresses is 2 to the 32th power.
  • the VLAN ID is used as the packet feature
  • the number of VLAN IDs is 4096. If the corresponding GEM is specified for each packet.
  • the interactive endpoint ME pointer the managed entries can be complicated. Therefore, the embodiment of the present invention defines a new universal service flow mapping ME to maintain the packet characteristics, the mask of the packet feature, and the number of bytes of the packet feature offset, and supports the general feature representation method of the embodiment of the present invention.
  • the ME contains the attribute fields as shown in Table 5: Attribute Fields
  • the general message feature indicates that the GEM interactive termination ME inter-terminal ME pointer and the re-marked message priority pointer and the re-marked message priority flag of the GEM corresponding to the general message feature item 1 are 0, indicating that the tagged message mapping function that matches the feature is canceled.
  • General message feature representation item 2 The general message feature representation item contains three fields: Message Feature Field
  • the general message feature indicates that the GEM interaction end point ME inter-terminal ME pointer and the re-marking message priority pointer and the re-marking message priority flag of the GEM corresponding to the GEM corresponding to the general 4 ⁇ character representation item 2, if A value of 0 indicates that the tagged message mapping function that matches the feature is canceled.
  • the Generic Message Feature Representation item contains three fields:
  • the general message feature indicates that the GEM interaction end point ME inter-terminal ME pointer and the re-marked message priority pointer and the re-marked message priority mark of the GEM corresponding to the GEM corresponding to the general message feature item 3, if 0, indicating that the tagged message mapping function that matches the feature is canceled.
  • Generic Message Feature Representation Item N The Generic Message Feature Representation item contains three fields:
  • the number of general message feature representation items in the general service flow mapping ME is determined according to the system specifications of the OLT and the ONT.
  • the general message feature indicates that the items N and N are singular and contain three fields. N2007/000193
  • the length of the three fields can be flexibly defined.
  • the GEM PORT-ID is stored in the corresponding attribute field of the corresponding GEM Port Network Connection Endpoint ME (GEM Port Network CTP), which stores a pointer for locating the GEM PORT Network Connection Endpoint ME.
  • GEM Port Network CTP GEM Port Network CTP
  • the MAC Bridge Port Configuration Data is responsible for the attribute management of various configuration data of the Ethernet port. If the service flow is mapped to the specified service transmission channel, the priority of the service flow needs to be re-marked.
  • the MAC bridge port configuration data ME of the prior art is also modified.
  • the attribute fields of the new MAC bridge port configuration data ME are as shown in Table 6:
  • FIG. 8a differs from the prior art ME relationship diagram in that the 802.1p Mapper Service Profile (802.1p Mapper Service Profile) in the prior art is replaced with a General Traffic Mapper Service (ME), and the general traffic map is mapped.
  • the ME may contain N general-purpose four-character representations.
  • the ME relationship diagram of the general service flow mapping ME is supported, as shown in the figure. 8b is shown.
  • Figure 8b differs from the prior art ME diagram in that the General Traffic Mapper Service Profile ME (General Traffic Mapper Service Profile) is added.
  • the configuration of the configuration of the common service flow mapping ME is as follows.
  • an attribute of the same OMCI channel message is configured as an example. The process includes the following steps:
  • Step 901 The configuration terminal notifies the OLT to configure the ONT common service flow mapping ME attribute of the OLT, and the configuration parameters include an ONUID, a packet feature, a packet feature mask, a packet feature offset byte number, and a GEM PORT-ID.
  • Step 902 The OLT converts the GEM PORT data carried in the received configuration parameters into a GEM interactive endpoint ME pointer corresponding to the GEM PORT, and sends a message requesting to configure the ONT universal service flow mapping ME attribute through the OMCI channel, where the message is sent.
  • the packet characteristics, the grammar feature mask, and the packet feature offset bytes in the configuration parameters sent by the terminal to the OLT can be easily understood by the user, such as a VLAN ID and an IP address.
  • the OLT then splits the received VLAN ID and/or IP address into the ONT, which is divided into packet characteristics, packet feature mask, and packet feature offset bytes.
  • Step 903 After the ONT configuration is completed, a response message of success or failure is returned.
  • Embodiments of the present invention further include a process of canceling a general service flow mapping ME configuration,
  • the implementation process is as shown in Figure 10.
  • Figure 10 the configuration of a packet characterization parameter is cancelled by the same OMCI channel message.
  • the process includes the following steps:
  • Step 1001 The configuration terminal notifies the OLT to cancel the general service flow mapping of the ONT of the OLT to be configured.
  • the configuration parameters include the ONUID, the packet feature, the packet feature mask, and the packet feature offset byte number.
  • Step 1002 The OLT sends a message requesting to cancel the ONT general service flow mapping ME attribute configuration through the OMCI channel, where the message carries configuration parameters: an ONUID, a packet feature, a message feature mask, a packet feature offset byte number, and 0.
  • Step 1003 After the ONT configuration is completed, a response message of success or failure is returned.

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Description

将业务流映射到业务传输通道的方法、 系统及光网络终端 技术领域
本发明涉及光网络技术领域, 特别涉及将业务流映射到业务传输通 道的方法、 系统及光网络终端。 发明背景
目前的宽带接入技术主要分为铜线接入技术和光接入技术, 由光接 入技术实现的接入网称为光接入网( Optical Access Network, OAN )。 无 源光网絡( Passive Optical Network, PON )技术是一种点对多点传送的 光接入技术。 吉比特无源光网络 ( Giga-bit Passive Optical Network, GPON )是基于 PON的演进版本, 它可以支持较高的速率需求。
图 1为现有技术的 PON系统结构示意图, PON系统主要包括光线 路终端( Optical Line Terminator , OLT )、光分配网络( Optical Distribution Network, ODN )和光网絡单元 ( Optical Network Unit, ONU )三部分。
其中, OLT用于为 OAN提供网络侧接口 (SNI ), 并连接一个或者 多个 ODN; ODN用于将 OLT下行的数据通过光分路传输到各个 ONU, 并将 ONU的上行数据通过汇聚传输到 OLT; O J用于为 OAN提供用 户侧接口 (UNI ), 并与 ODN相连。 若 ONU 能够同时提供以太网 ( Ethernet )用户端口或者普通电话业务 ( Plain Old Telephone Service, POTS )用户端口等功能,则称为光网络终端( Optical Network Terminator, ONT )。 本文为便于描述, 将 ONU、 ONT统称为 ONT。
在 GPON系统中, OLT通过 ONT管理控制接口 ( ONT Management and Control Interface, OMCI ) 实现对 ONT的控制。 OMCI的数据和普 通的业务数据一样通过 OMCI适配器(OMCI Adapter )封装成 ATM信 元或 GEM数据块进行传输。
在 GEM封装方式下,Τ-CONT内部通过吉比特无源光网络封装方式 端口 ( GEM PORT ) 复用业务流, 每个 GEM PORT都被分配一个 GEM PORT标识 (GEM PORT-ID ); 在 ATM封装方式下, T-CONT内部通过 永久虚通路 /永久虚通道(PVP/PVC )复用业务流, 每个 PVP/PVC都被 分配一个虚通路标识 /虚通道标识( VPI/VCI )。 GTC层中的 DBA控制模 块(DBA Control )通过对所有 T-CONT的监控和管理, 来实现对每个 ONT的动态带宽分配。
下文针对 GEM封装方式进行描述, 但所有的描述同样适用于 ATM 封装方式。
图 2为现有技术承载以太网业务的 ONT的结构示意图, ONT包括 介质访问控制 (MAC, Media Access Control)桥模块和 802.1p优先级映射 模块, MAC桥模块也可以为单纯的以太网端口适配模块 。
其中, MAC桥模块实现以太网交换功能, 支持多个以太网端口的接 入。 MAC桥模块从外部以太网端口 Pl、 端口 P2和端口 P3上接收以太 网报文, 通过内部的以太网交换功能, 将以太网报文交换到与 802.1p优 先级映射模块连接的内部以太网端口 P0上。 802.1p优先级映射模块从 内部以太网端口接收以太网类型业务流,将具有不同 802.1p优先级的以 太网报文映射到不同的 GEM PORT中, 或者多个 802.1p优先级的以太 网报文映射到一个 GEM PORT中。
具体的 802.1p优先级映射操作通过 OLT调度 ONT实现, OLT通过 OMCI通道指示 ONT处理不同 802.1p优先级的以太网报文映射到哪个 GEM PORTc OMCI协议中将 OLT管理 ONT的各种数据抽象成协议独 立管理信息库 (MIB , protocol-independent Management Information Base ), 管理信息库的基本信息单元是管理实体 (ME, manage entity)。 根 据 ONT的各种类型的配置, OMCI定义了 OLT控制 ONT的各个 ME, ONT在 OLT的控制下实现各个 ME的配置管理功能。
目前 GPON技术标准中, ONT单纯支持对以太网报文通过 802.1p 优先级映射到 GEM PORT的功能, 不支持通过其它报文特征映射到不 同的 GEM PORT的功能。其它的^ =艮文特征包括: VLAN ID、IP层的 DSCP 域、 IP或者 MAC源地址、 IP或者 MAC目的地址、协议类型、 TCP UDP 端口号等。 不能根据任意报文特征将以太网报文映射到不同 GEM PORT, 就不能通过单独的 T-CONT为具有任意报文特征的以太网报文 提供特别的 QOS服务。 因此, 对于需要细分业务保证 QOS的情形, 现 有的标准无法满足要求。
另外, 在 GPON系统中, 每个 ONT可以接入一个或者多个组播用 户。 参见图 3所示的现有技术的组播业务传输示意图, OLT接收到组播 用户的 IGMP请求报文后, 进行鉴权处理, 并在鉴权通过后, 向网络侧 的组播源服务器申请用户指定的组播节目流; 组播源服务器将指定的组 播节目流发送到 OLT, 由 OLT通过每个 ONT将组播业务流复制到各个 组播用户。 同时, OLT会定时向组播用户发送 IGMP查询报文, 检测组 播用户是否在线。 IGMP请求报文和 IGMP查询报文均可称为 IGMP控 制报文。 在目前的 GPON技术标准中, IGMP控制报文一般是和上网等 数据业务混合在一起传输的。 由于上网等数据业务的优先级较低, 带宽 得到有效保证, 导致 IGMP控制报文的服务质量(QoS )得不到保证, 从而直接影响组播业务的性能。
以上仅对 IGMP控制报文的传输进行了阐述, 实际上, 其它的上行 控制报文同样存在上述问题。其它的上行控制报文包括:以太网承载 PPP 协议(PPPoE )控制报文、 动态主机配置协议(DHCP )控制报文、 会话 启动协议 ( SIP )控制报文等。 发明内容
有鉴于此,本发明实施例一方面提供了一种无源光网络系统中将业 务流映射到业务传输通道的方法; 另一方面提供了一种无源光网络系统 中将业务流映射到业务传输通道的系统及光网络终端, 可以根据业务流 的报文特征将业务流映射到不同的业务传输通道, 保证细分业务的
QOS。
本发明实施例提供的将业务流映射到业务传输通道的方法, 包括:
A、 在光网络终端 ONT中配置报文特征配置参数;
B、 ONT接收到业务流后, 确定所述的业务流与已配置的所述报文 特征匹配时, 将所述业务流映射到指定的业务传输通道。
本发明实施例提供的将业务流映射到业务传输通道的系统, 该系统 包括: ONT和 OLT,
所述 OLT, 用于接收来自配置终端的报文特征配置参数, 处理后将 所述^ 文特征配置参数发送给所述 ONT;
所述 ONT, 用于接收所述 OLT下发的报文特征配置参数并进行配 置; 在接收到业务流后, 确定接收到的业务流与已配置的报文特征匹配 时, 将所述业务流映射到指定的业务传输通道中。
本发明实施例提供的光网络终端 ONT, 该 ONT包括: 业务处理模 块以及通用业务流映射模块,
所述业务处理模块, 用于接收来自用户侧的业务流, 并将接收到的 业务流发送给所述通用业务流映射模块;
所述通用业务流映射模块, 用于配置 OLT 下发的报文特征配置参 数, 接收来自所述业务处理模块的业务流, 确定接收到的业务流与已配 置的报文特征匹配时, 将所述业务流映射到指定的所述光网络协议处理 模块中的业务传输通道中。 本发明实施例提供的将业务流映射到业务传输通道的方法、 系统及 光网络终端, 通过将确定的艮文特征配置参数配置到 ONT中, 当 ONT 确定接收到的业务流与已配置的报文特征匹配时, 将与已配置的报文特 征匹配的业务流映射到指定的业务传输通道。 因此本发明实施例提供的 方法、 系统及光网絡终端可以支持根据预先设定的任意报文特征将业务 流映射到不同的业务传输通道, 从而保证了细分业务流的 QOS要求。 所述的任意报文特征包括: 802.1p优先级、 VLAN ID, IP层的 DSCP域、 IP或者 MAC源地址、 IP或者 MAC目的地址、 协议类型、 TCP UDP端 口号等。 附图简要说明
图 1为现有技术的 PON系统结构示意图;
图 2为现有技术承载以太网业务的 ONT的结构示意图;
图 3为现有技术组播业务传输示意图;
图 4为本发明第一实施例的将业务流映射到业务传输通道的方法的 流程图;
图 5为本发明第二实施例的将业务流映射到业务传输通道的方法的 流程图;
图 6a为本发明实施例中的 T-CONT分配模型一示意图;
图 6b为本发明实施例中的 T-CONT分配模型二示意图;
图 6c为本发明实施例中的 T-CONT分配模型三示意图;
图 6d为本发明实施例中的 T-CONT分配模型四示意图。
图 7是本发明实施例的 ONT结构示意图;
图 8a是本发明支持通用业务流映射的第一种 ME关系图;
图 8b是本发明支持通用业务流映射的第二种 ME关系图; 图 9是本发明实施例的通用业务流映射的配置流程图; 图 10是本发明实施例的取消通用业务流映射配置的流程图。 实施本发明的方式
为使本发明的 ϋ的、 技术方案及优点更加清楚明白, 下面结合附图 和实施例对本发明作进一步地详细说明。
本发明实施例提供的将业务流映射到业务传输通道的方法包括: 在 ΟΝΤ中配置报文特征配置参数; ΟΝΤ接收到业务流后, 确定所述业务 流与已配置的所述报文特征匹配时, 将所述业务流映射到指定的业务传 输通道中。
图 4为本发明第一实施例的将业务流映射到业务传输通道的方法的 流程图, 该流程包括如下步骤:
步骤 401 , 将确定的报文特征配置参数配置到 ΟΝΤ中。 其中每一项 报文特征配置参数包括: 报文特征、 报文特征偏移字节数以及指定的业 务传输通道的标识符。
报文特征是报文数据帧中某一个特征字段的值, 例如对于 IP地址 10.11.1.1 ,该报文特征的值为 4个字节 (00001010, 00001011 , 00000001 , 00000001)。报文特征偏移字节数是报文特征字段距离报文头的偏移字节 数, 例如源 IP地址字段距离以太网报文头的偏移字节数为 26。
本发明实施例中的报文特征可以包括: 以太网源地址及以太网源地 址段、以太网目的地址及以太网目的地址段、 VLAN ID, 802.1p优先级、 IP源地址及源 IP地址段、 目的 IP地址及目的 IP地址段、 IP DSCP域、 IP协议类型、 TCP/UDP 端口号等。 在实际应用中, 可以不断扩充报文 特征组, 使之包括通用的报文特征表示方法中的报文特征。 报文特征的 长度是没有限制的, 但在实际应用中, 为了便于硬件处理, 报文特征的 长度最好是 2的整数次幂, 如 4、 8、 16字节等。
业务传输通道可以是 GEM方式的 GEM PORT,也可以是 ATM封装 方式的 FV /PV (。
步骤 402, ONT在接收到业务流后,执行第一种报文特征匹配操作, 如果报文特征匹配成功,, 则执行步驟 403; 否!! 'j执行步骤 404。
所述第一种报文特征匹配操作的具体过程为: 逐一根据已配置的报 文特征配置参数中的报文特征偏移字节数确定业务流数据帧中, 具有与 对应的报文特征相同字节数的部分字节, 并将其与对应的报文特征进行 比较, 如果二者匹配, 即二者一致, 则执行步骤 403; 如果 ONT确定已 配置的所有报文特征与业务流中的相应字节不匹配, 则执行步骤 404。
本步骤所述执行报文特征匹配操作前, 进一步包括: 所述 ONT判 断自身是否支持通用业务流映射操作, 如果支持, 则执行报文特征匹配 过程; 否则, 将接收到的所有业务流映射到固定的业务传输通道中。
步骤 403 , 停止比较操作, 将符合报文特征的业务流映射到为对应 报文特征指定的业务传输通道中。
本步骤中,将符合报文特征的业务流映射到指定的业务传输通道时, 进一步可以包括: 重新标记业务流的优先級; 或者
在所述将符合报文特征的业务流映射到指定的业务传输通道前 , 进 一步包括: 重新标记所述业务流的优先级; 在这种情况下, 所述将符合 ^=艮文特征的业务流映射到指定的业务传输通道的步驟为: 才艮据重新标记 的优先级将所述业务流映射到指定的业务传输通道。
步骤 404, ONT执行出错告警处理, 结束操作; 或根据预先设定的 缺省映射方法将所述业务流映射到对应的业务传输通道中。
在该实施例中, 步驟 404是可选步骤。
如果报文特征在报文中是连续的字节, 图 4所示的方法可以满足硬 件处理的要求, 如果报文特征在报文中不是连续的字节, 而是两段相互 独立的字节段, 例如取出源 IP地址和 TCP端口号相同特征的报文, 则 图 4所示的方法无法实现。对于报文特征在报文中不是连续字节的情形, 报文特征字节进行过滤。 报文特征掩码的表示形式可以采用 1匹配表示 方式, 也可以采用 0匹配方式。 在 1匹配方式中, 艮文特征字段中真正 需要的特征比特位为 1 , 中间不需要的特征比特位为 0; 在 0匹配表示 方式中, 真正需要的特征比特位为 0, 中间不需要的特征比特位为 1。 因此, 真正需要的报文特征可以由报文特征字段与报文特征的掩码执行 按位与操作得到。 这样通过报文特征、 报文特征的掩码、 报文特征偏移 字节数三者的联合, 就可以方便、 灵活、 快速地确定报文中任意的报文 特征, 包括前面提到的 9种^ :艮文特征以及其它的报文特征。
图 5为本发明第二实施例的将业务流映射到业务传输通道的方法的 流程图, 该流程包括如下步骤:
步骤 501, 将确定的报文特征配置参数配置到 ONT中。 其中每一项 报文特征配置参数包括: 报文特征、 报文特征偏移字节数、 报文特征掩 码以及指定的业务传输通道的标识符。
本实施例中, 报文特征的掩码采用 1匹配表示方式表示。 如, 当需 要将源 IP地址为 10.11.1.0〜10.11.1.255—个网段的报文识别出来时, 该 4艮文特征有 4个字节, 其中 10.11.1.1对应的值是 (00001010, 00001011 , 00000001 , 00000001) , 可以设计该报文特征的掩码为(11111111 , 11111111 , 11111111, 00000000), 将该报文特征的掩码和报文特征进行 按位与操作, 获得的操作结果就表示 10.11丄0~10.11.1.255的网段特征。
步骤 502, ONT在接收到业务流后,执行第二种报文特征匹配操作, 如果报文特征匹配成功, 则执行步骤 503; 否则执行步骤 504。 所述第二种报文特征匹配操作的具体过程为: 逐一将已配置的报文 特征配置参数中的报文特征的掩码和对应的报文特征进行按位与操作, 得到第一操作结果, 将根据对应的报文特征偏移字节数确定的业务流数 据帧中, 具有与对应的报文特征相同字节数的部分字节与对应的报文特 征的掩码进行按位与操作, 得到第二操作结果, 比较第一操作结果和第 二操作结果, 如果二者匹配, 即二者一致, 则执行步骤 503; 如果 ONT 确定根据所有已配置的报文特征配置参数获取的所述第一操作结果和 第二操作结果都不匹配, 则执行步骤 504。
本步驟所述执行报文特征匹配操作前, 进一步包括: 所述 ONT判 断自身是否支持通用业务流映射操作, 如果支持, 则执行报文特征匹配 过程; 否则, 将接收到的所有业务流映射到固定的业务传输通道中。
步骤 503, 停止比较操作,将所述业务流映射到为对应报文特征指定 的业务传输通道中。
本步骤中, 将符合 文特征的业务流映射到指定的业务传输通道时, 进一步可以包括: 重新标记业务流的优先级标记; 或者 在所述将符合报文特征的业务流映射到指定的业务传输通道前, 进 一步包括: 重新标记所述业务流的优先级; 在这种情况下, 所述将符合 报文特征的业务流映射到指定的业务传输通道的步骤为: 根据重新标记 的优先级将所述业务流映射到指定的业务传输通道。
步骤 504, ONT执行出错告警处理, 结束操作; 或根据预先设定的 缺省映射方法将所述业务流映射到对应的业务传输通道中。
该实施例所示的步骤 504为可选步驟。 图 5所示方法同样适用于报 文特征在报文中是连续字节的情况。 图 5所示实施例中的报文特征、 业 务传输通道与图 4所示的实施例具有相同的选取方式, 这里不再赘述。
图 4和图 5实施例所示的方法, 可以应用到控制报文的上行传输过 程中, 当 ONT接收到业务流后, 执行报文特征匹配操作, 将业务流中 的控制报文业务流和数据报文业务流分别映射到不同的传输通道中进 行传输, 进而可以保证控制报文业务流传输的高 QOS要求。
为了保证控制 艮文业务流的高优先级传输,可以采用的第一种方 式为: 将与已配置的报文特征匹配的控制报文业务流映射到高优先级的 业务传输通道中。
如果所有用户的控制报文业务流都映射到同一个 T-CONT中,则所 述将控制报文业务流映射到高优先级传输通道中为:将所有用户的控 制报文业务流都映射到同一个 T-CONT的高优先级队列中;
如果不同用户的控制报文业务流分别映射到不同的 T-CONT中, 则所述将控制报文业务流映射到高优先级传输通道中为:将各个用户 的控制报文业务流分别映射到与各个用户对应的 T-CONT 的高优先 级队列中。
为了保证控制报文业务流的高优先级传输,可以采用的第二种方 式为:将与已配置的报文特征匹配的控制报文业务流和数据报文业务流 分别映射到不同的业务传输通道后, ONT将所述控制报文业务流映射 到的业务传输通道设置为高优先级。
所述将控制报文业务流映射到的业务传输通道设置为高优先级 的方法包括: ONT将控制报文业务流映射到的 T-CONT的类型 Type 设置为 Type 2。
为了保证控制报文业务流的高优先级传输,可以采用的第三种方 式为:在将与已配置的报文特征匹配的控制报文业务流和数据报文业务 流分别映射到不同的业务传输通道后, 在 OLT上对控制报文业务流进 行高优先级处理。
所述在 OLT上对控制报文业务流进行高优先级处理包括: OLT 将收到的控制报文业务流发送到网络侧,并将控制报文业务流的优先 级设置为高。
所述将控制报文业务流的优先级设置为高包括: 将控制报文业务 流的 802.1p设置为高优先级。
需要说明的是, 上述三种方式既可以单独使用, 也可以组合使用。 比如, 每次只使用一种方式; 或者同时使用方式 1和方式 3; 或者同时 使用方式 2和方式 3等等。
所述控制^ =艮文为因特网组管理协议 IGMP控制^ =艮文、或为以太网 承载 PPP协议 PPPoE控制 ^艮文、 或为'动态主机配置协议 DHCP控制 报文、 或为会话启动协议 SIP控制报文。
在 GPON通用技术标准( CTS ) 中, 对于 ONT的 T-CONT分配规 定了多种不同的应用方式, 具体请参见图 6a、 图 6b、 图 6c和图 6d。 图 6a中为每个 ONT只分配一个 T- CONT; 图 6b中为每个 ONT的每个用 户分别分配一个 T-CONT; 图 6c中为每个 ONT的每类业务流分别分配 一个 T-CONT; 图 6d中为每个 ONT每个用户的每类业务流分别分配一 个 T-CONT。
下面以 IGMP控制报文为例, 并分别结合图 6a、 图 6b、 图 6c和图 6d所示的四种 T-CONT分配应用方式, 对 ONT上 IGMP控制报文和数 据艮文的传输进行详细说明。
参见图 6a, ONT将所有用户的控制报文都映射到同一个 T-CONT 的高优先级队列中。 具体过程如下: 对于所有的用户, ONT从用户侧收 到业务流后, 采用图 4或图 5实 例提供的方法将业务流中的 IGMP控 制报文和数据报文映射到相同 T-CONT 的不同优先级队列中, 发送给 OLT。 其中, IGMP控制报文的优先级要高于数据报文的优先级, 也就 是说, 将 IGMP控制报文映射到 T-CONT的高优先级队列中。 参见图 6b所示, ONT将各个用户的控制报文分别映射到与各个用 户对应的 T-CONT的高优先级队列中。 具体过程如下: 对于每个用户, ONT从用户侧收到业务流后,采用图 4或图 5实施例 4是供的方法将业务 流中的 IGMP控制报文和数据报文映射到相同 T-CONT的不同优先级队 列中, 发送给 OLT。 其中, IGMP控制报文的优先级要高于数据报文的 优先级, 也就是说, 将 IGMP控制报文映射到 T-CONT的高优先级队列 中。
参见图 6c, ONT将所有用户的控制报文所在 T-CONT的类型设置为 Type 2。具体过程如下: 对于所有的用户, ONT从用户侧收到业务流后, 采用图 4或图 5实施例提供的方法将业务流中的 IGMP控制报文和数据 报文映射到不同 T-CONT的队列中, 发送给 OLT, 并将 IGMP控制报文 所对应的 T-CONT类型设置为 Type 2。
参见图 6d, ONT将各个用户的控制报文所在 T-CONT的类型均设 置为 Type 2。 具体过程如下: 对于每个用户, ONT从用户侧收到业务流 后, 采用图 4或图 5实施例提供的方法将业务流中的 IGMP控制报文和 数据报文映射到不同 T-CONT的队列中, 发送给 OLT, 并将 IGMP控制 艮文所对应的 T-CONT类型设置为 Type 2。
由以上描述可见, 利用本发明实施例所提供的方法可以使上行控制 报文得到及时传输, 进而保证了控制报文的 QOS要求。
本发明实施例同时还提供了一种将业务流映射到业务传输通道的系 统, 该系统包括: ONT和 OLT, 其中
OLT, 用于接收配置终端发送的报文特征配置参数, 对所述报文特 征配置参数进行处理, 并将确定的报文特征配置参数发送给 ONT;
ONT, 用于配置所述 OLT下发的报文特征配置参数,接收到来自用 户侧的业务流后, 在确定接收到的业务流与已配置的 ^艮文特征匹配时, 将所述业务流映射到指定的业务传输通道中。
所述 ONT,进一步可以用于在将所述业务流映射到指定的业务传输 通道时, 重新标记所述业务流的优先级; 或者在将所述业务流映射到指 定的业务传输通道前, 进一步用于重新标记所述业务流的优先级, 并根 据重新标记的优先级确定指定的业务传输通道。
图 7为本发明实施例的 ONT结构示意图。如图 7所示,在本发明实 施例提供的将业务流映射到业务传输通道的系统中的 ONT 包括: 业务 处理模块和通用业务流映射模块,
所述业务处理模块, 用于接收来自用户侧的业务流, 并将接收到的 业务流发送给所述通用业务流映射模块;
所述通用业务流映射模块, 用于配置 OLT 下发的报文特征配置参 数, 接收来自所述业务处理模块的业务流, 在确定接收到的业务流与已 配置的报文特征匹配时, 将所述业务流映射到指定的业务传输通道中。
所述通用业务流映射模块, 进一步可以用于在将所述业务流映射到 指定的业务传输通道时, 重新标记所述业务流的优先级标记; 或者在将 所述业务流映射到指定的业务传输通道中前, 进一步用于重新标记业务 流的优先级, 并根据重新标记的优先级确定所述指定的业务传输通道。
所述通用业务流映射模块包括: 报文特征配置模块、 报文特征匹配 模块以及业务流映射模块。
所述报文特征配置模块, 用于接收来自所述业务处理模块的报文特 征配置参数并进行配置;
所述报文特征匹配模块, 用于接收来自所述业务处理模块的业务 流, 并将所述业务流与所述报文特征配置模块已配置的报文特征进行匹 配, 在二者匹配时, 停止比较操作, 并向所述业务流映射模块发送业务 流映射指令; 所述业务流映射模块, 接收来自所述 ^艮文特征匹配模块的业务流映 射指令, 并将所述业务流映射到指定的业务传输通道中。
对于报文特征在报文中是连续的字节的情况, 所述报文特征匹配模 块可以为: 第一艮文特征匹配模块, 用于接收来自所述业务处理模块的 业务流, 并逐一根据所述报文特征配置模块已配置的报文特征偏移字节 数确定业务流数据帧中, 具有与对应的报文特征相同字节数的部分字 节, 并将其与对应的报文特征进行比较,在二者匹配时,停止比较操作, 并向所述业务流映射模块发送映射指令。
对于报文特征在报文中是连续字节或不连续字节的情况, 所述报文 特征匹配模块可以为: 第二报文特征匹配模块, 用于接收来自所述业务 处理模块的业务流, "并逐一将已配置的报文特征与对应的掩码进行按位 与操作, 得到第一操作结果, 将根据对应的报文特征偏移字节数确定的 业务流数据帧中, 具有与所述报文特征相同字节数的部分字节与所述掩 码进行按位与操作,得到第二操作结果,比较第一操作结果和第二操作, 在二者匹配时,停止比较操作,并向所述业务流映射模块发送映射指令。
所述通用业务流映射模块进一步可以包括: 优先级确定模块。
所述业务流映射模块, 进一步用于向所述优先级确定模块发送优先 级确定指令; 接收来自所述优先级确定模块的反馈信息, 将所述业务流 映射到指定的业务传输通道中;
所述优先级确定模块, 接收来自所述业务流映射模块的优先级确定 指令, 确定标记所述业务流的优先级, 并向所述业务流映射模块发送反 馈信息; 或者重新标记所述业务流的优先级, 根据重新标记的优先级确 定所述指定的业务传输通道, 并向所述业务流映射模块发送反馈信息。
为了将识別出的业务流映射到指定的业务传输通道, 即 GRM PORT 中, 通用业务流映射模块从与 MAC桥连接的内部以太网端口接收以太 网报文, 根据已配置好的业务流报文特征配置参数中的报文特征将以太 网报文进行分类 , 并将具有不同报文特征的以太网报文直接映射到不同 的业务传输通道中, 可选同时重新标记业务流的优先级, 或者先将具有 不同报文特征的以太网报文重新标记不同的优先级, 根据重新标记的报 文优先级标记将报文映射到不同的 GEM PORT中。 不同的 GEM PORT 汇聚到一个 T-CONT中或者通过单独的 T-CONT承载,在 OLT对 T-CONT 的调度下, ONT基于 T-CONT向 OLT发送数据。
OLT负责下发报文特征配置参数给 ONT的通用业务流映射模块, 具体的实现方法是: OLT通过 OMCI消息将报文特征配置参数发送给通 用业务流映射模块。
将不同特征的业务流映射到 GEM PORT或 PVP/PVC, 采用 GPON 标准中 802. lp映射策略表 ME ( 802.1 mapper service profile ) 的管理方 式是不可行的, 802.1p映射策略表 ME根据 802.1p的 8个不同的值, 为 每个 802. lp的值定义了对应的 GEM交互终结点 ME( GEM Interworking Termination Point )指针。 当以 IP地址作为报文特征时, IP地址的数量 是 2的 32次方, 当以 VLAN ID作为报文特征时, VLAN ID的数量是 4096,如果为每一个报文的特征指定对应的 GEM交互终结点 ME指针, 管理的表项会很复杂。 因此本发明实施例定义新的通用业务流映射 ME 来维护报文特征、 报文特征的掩码和报文特征偏移字节数, 支持本发明 实施例的通用 艮文特征表示方法。
通用业务流映射 ME包含的属性字段如表 5所示: 属性字段
通用 艮文特征表示项数目 ONT支持的通用报文特征表示项数目 通用 艮文特征表示项 1 通用 4艮文特征表示项包含三个字段的 值: 报文特征字段
报文特征字段掩码
报文特征字段偏移字节数
通用报文特征表示项 1 对 通用报文特征表示项 1 对应的 GEM交 应的 GEM交互终结点 ME 互终结点 ME指针和重标记报文优先级 指针和重标记报文优先级 标记, 如果为 0,表示取消对符合特征的 标记 报文映射功能。
通用报文特征表示项 2 通用报文特征表示项包含三个字段: 报文特征字段
报文特征字段掩码
报文特征字段偏移字节数
通用报文特征表示项 2对 通用 4艮文特征表示项 2对应的 GEM交 应的 GEM交互终结点 ME 互终结点 ME指针和重标记报文优先级 指针和重标记报文优先级 标记, 如果为 0,表示取消对符合特征的 标记 报文映射功能。
通用报文特征表示项 3 通用报文特征表示项包含三个字段:
报文特征字段
报文特征字段掩码
报文特征字段偏移字节数
通用报文特征表示项 3 对 通用报文特征表示项 3 对应的 GEM交 应的 GEM交互终结点 ME 互终结点 ME指针和重标记报文优先级 指针和重标记报文优先级 标记, 如果为 0,表示取消对符合特征的 标记 报文映射功能。 通用报文特征表示项 N 通用报文特征表示项包含三个字段:
报文特征字段
报文特征字段掩码
报文特征字段偏移字节数
通用 ·!艮文特征表示项 N 通用报文特征表示项 N对应的 GEM交 对应的 GEM 交互终结点 互终结点 ME指针和重标记报文优先级 ME指针和重标记报文优 标记, 如果为 0, 表示取消对符合特征 先级标记 的报文映射功能。 表 5
通用业务流映射 ME中的通用报文特征表示项数目根据 OLT和 ONT 的系统规格确定, 通用报文特征表示项 N, N为单数, 包含三个字段, N2007/000193
分别用于存储报文特征、 掩码、 报文特征偏移字节数, 三个字段的长度 可以灵活定义。
GEM PORT-ID存储于相应的 GEM PORT 网络连接终结点 ME ( GEM Port Network CTP ) 的相应属性字段中, GEM交互终结点 ME 存储用于定位 GEM PORT网络连接终结点 ME的指针。
MAC桥端口配置数据 ME ( MAC Bridge Port Configuration Data )负 责以太网端口各种配置数据的属性管理, 如果在将业务流映射到指定的 业务传输通道的同时, 需要重新标记业务流的优先级, 则现有技术的 MAC桥端口配置数据 ME也要进行修改, 新的 MAC桥端口配置数据 ME包含的属性字段如表 6所示:
Figure imgf000019_0001
表 6
如果在将业务流映射到指定的业务传输通道时, 需要重新标记业务 流的优先级, 则支持通用业务流映射 ME的 ME关系图, 如图 8a所示。 图 8a与现有技术的 ME关系图的区別在于将现有技术中的 802.1映射策 略表实体(802.1p Mapper Service Profile )替换为通用业务流映射 ME ( General Traffic Mapper Service Profile ),通用业务流映射 ME可以包含 N项通用 4艮文表示项。
如果在将业务流映射到指定的业务传输通道前, 重新标记业务流的 优先级, 并根据重新标记的优先级确定指定的业务传输通道, 则支持通 用业务流映射 ME的 ME关系图, 如图 8b所示。 图 8b与现有技术的 ME 关系图的区别在于增加了通用业务流映射 ME ( General Traffic Mapper Service Profile )。
通用业务流映射 ME的配置流程实施例如图 9所示, 该实施例中以 同一个 OMCI通道消息配置一项属性为例, 该流程包括如下步驟:
步驟 901 , 配置终端通知 OLT配置 OLT连接的 ONT通用业务流映 射 ME属性, 配置参数包括 ONUID、 报文特征、 报文特征掩码、 报文 特征偏移字节数、 GEM PORT-ID。
步骤 902, OLT将接收到的配置参数中携带的 GEM PORT数据转换 为与 GEM PORT一一对应的 GEM交互终结点 ME指针, 通过 OMCI 通道发送请求配置 ONT通用业务流映射 ME属性的消息, 该消息携带 配置参数: ONUID、 报文特征、 报文特征掩码、 报文特征偏移字节数、 GEM交互终结点 ME指针、 重标记艮文优先级标记。
配置终端下发给 OLT的配置参数中的报文特征、 ^艮文特征掩码、报 文特征偏移字节数可以是用户易于理解的方式, 例如 VLAN ID、 IP地 址等。 OLT再将接收到的 VLAN ID和 /或 IP地址拆重新拆分成报文特征、 报文特征掩码、 报文特征偏移字节数下发给 ONT。
步骤 903 , ONT配置完成后返回成功或者失败的响应消息。
本发明实施例进一步包括取消通用业务流映射 ME配置的过程, 其 实现流程如图 10所示, 图 10中以同一个 OMCI通道消息取消一项报文 特征配置参数的配置为例, 该流程包括如下步骤:
步驟 1001 ,配置终端通知 OLT取消 OLT连接的 ONT的通用业务流 映射 ME的属性配置, 配置参数包括 ONUID、 报文特征、 报文特征掩 码、 报文特征偏移字节数。
步骤 1002, OLT通过 OMCI通道发送请求取消 ONT通用业务流映 射 ME属性配置的消息, 该消息携带配置参数: ONUID、 报文特征、 报 文特征掩码、 报文特征偏移字节数、 0。
步骤 1003 , ONT配置完成后返回成功或者失败的响应消息。
以上所述对本发明的目的、 技术方案和有益效果进行了进一步的详 细说明, 所应理解的是, 以上所述并不用以限制本发明, 凡在本发明的 精神和原则之内, 所做的任何修改、 等同替换、 改进等, 均应包含在本 发明的保护范围之内。

Claims

权利要求书
1、 一种将业务流映射到业务传输通道的方法, 其特征在于, 该方法 包括如下步骤:
A、 在光网络终端 ONT中配置报文特征配置参数;
B、 ONT接收到业务流后, 确定所述的业务流与已配置的所述^艮文 特征匹配时, 将所述业务流映射到指定的业务传输通道。
2、 如权利要求 1所述的方法, 其特征在于, 步骤 A所述报文特征 配置参数包括: 报文特征、 报文特征偏移字节数以及指定的业务传输通 道的标识符;
所述步骤 B的具体实现步骤为: 所述 ONT接收到业务流后, 逐一 根据已配置的报文特征偏移字节数确定业务流数据帧中, 具有与对应的 报文特征相同字节数的部分字节, 并将这部分字节与对应的报文特征进 行比较, 在确定二者匹配时, 停止比较操作, 将该业务流映射到指定的 业务传输通道的标识符对应的业务传输通道中。
3、 如权利要求 1所述的方法, 其特征在于, 所述将根据报文特征 的偏移字节数确定的部分字节与对应报文特征进行比较后, 进一步包 括: 所述 ONT判断接收到的业务流与已配置的所有报文特征均不匹配 时, 则执行出错告警处理, 结束操作; 或根据预先设定的缺省映射方法 将所述业务流映射到对应的业务传输通道中。
4、 如权利要求 1所述的方法, 其特征在于, 步驟 A所述报文特征 配置参数包括: 报文特征、 对应的报文特征偏移字节数和掩码、 以及 指定的业务传输通道的标识符;
所述步驟 B的具体实现步驟为: 所述 ONT接收到业务流后, 逐一 将已配置的掩码和对应的报文特征进行按位与操作, 得到第一操作结 果; 将根据对应的报文特征偏移字节数确定的业务流数据帧中, 具有与 对应的报文特征相同字节数的部分字节与所述掩码进行按位与操作 , 得 到第二操作结果; 比较第一操作结果和第二操作结果, 在确定二者匹配 时, 停止比较操作, 将所述业务流映射到指定的业务传输通道的标识符 对应的业务传输通道中。
5、 如权利要求 4所述的方法, 其特征在于, 所述比较第一操作结 果和第二操作结果后, 进一步包括: 所述 ONT判断根据所有已配置的 报文特征配置参数获取的所述第一操作结果和第二操作结果都不匹配, 则执行出错告警处理, 结束操作; 或根据预先设定的缺省映射方法将所 述业务流映射到对应的业务传输通道中。
6、如权利要求 2至 5任一项所述的方法, 其特征在于, 所述步骤 B 前, 进一步包括: 所述 ONT判断自身是否支持通用业务流映射操作, 如果判断支持, 则执行所述步骤 B; 否则, 将接收到的所有业务流映射 到固定的业务传输通道中。
7、 如权利要求 1至 5任一项所述的方法, 其特征在于, 所述报文特 征配置参数进一步包括: 重标记业务流的优先级标记;
步骤 B所述业务流映射到指定的业务传输通道时, 进一步包括: 重 新标记所述业务流的优先级; 或者
步驟 B所^述将业务流映射到指定的业务传输通道前, 进一步包括: 重新标记所述业务流的优先级;
所述将业务流映射到指定的业务传输通道的步骤为: 才艮据重新标记 的优先级确定指定的业务传输通道, 并将所述业务流映射到指定的业务 传输通道。 '
8、 如权利要求 1至 5任一项所述的方法, 其特征在于, 步骤 A所 述将所述报文特征配置参数配置到 ONT的步骤包括: 光线路终端 OLT接收到来自配置终端的报文特征配置参数,将其中 携带的无源光网络封装方式端口数据转换为与无源光网络封装方式端 口——对应的无源光网络封装方式交互终结点指针, 并将确定的^ =艮文特 征配置参数配置到所述 ONT中。
9、 如权利要求 1至 5任一项所述的方法, 其特征在于, 步骤 B所 述将业务流映射到指定的业务传输通道的步骤包括: 将确定与已配置的 报文特征匹配的控制报文业务流和数据报文业务流分別映射到指定的 业务传输通道中。
10、 如权利要求 9所述的方法, 其特征在于, 所述将控制报文业 务流和数据报文业务流分别映射到指定的业务传输通道为: 将确定与已 配置的报文特征匹配的控制报文业务流映射到高优先级的业务传输通 道中; 或
在所述将控制报文业务流和数据报文业务流分别映射到指定的业 务传输通道后, 所述 ONT将所述控制报文业务流映射到的业务传输 通道设置为高优先级; 或
所述将控制报文业务流和数据报文业务流分别映射到指定的业务 传输通道后, 在 OLT上对控制报文业务流进行高优先级处理。
11、 如权利要求 10所述的方法, 其特征在于, 所述 ONT将控制 报文业务流映射到高优先级的业务传输通道中为: ONT 将所有用户 的控制报文业务流都映射到同一个 T- CONT的高优先级队列中; 或者为: ONT '将各个用户的控制报文业务流分别映射到与各个 用户对应的 T-CONT的高优先级队列中。
12、 一种将业务流映射到业务传输通道的系统, 其特征在于, 该系 统包括: ONT和 OLT,
所述 OLT, 用于接收来自配置终端的报文特征配置参数, 处理后将 所述艮文特征配置参数发送给所述 ONT;
所述 ONT, 用于接收所述 OLT下发的报文特征配置参数并进行配 置; 在接收到业务流后, 确定接收到的业务流与已配置的报文特征匹配 时, 将所述业务流映射到指定的业务传输通道中。
13、 如权利要求 12所述的系统, 其特征在于, 所述 ONT, 进一步 用于在将所述业务流映射到指定的业务传输通道时, 重新标记所述业务 流的优先级; 或者在将所述业务流映射到指定的业务传输通道前, 进一 步用于重新标记所述业务流的优先级, 并才 据重新标记的优先级确定指 定的业务传输通道。
14、 一种光网络终端 ONT, 其特征在于, 该 ONT包括: 业务处理 模块和通用业务流映射模块,
所述业务处理模块, 用于接收来自用户侧的业务流, 并将所述业务 流发送给所述通用业务流映射模块;
所述通用业务流映射模块, 用于配置 OLT 下发的报文特征配置参 数, 接收来自所述业务处理模块的业务流, 确定接收到的业务流与已配 置的报文特征匹配时, 将所述业务流映射到指定的所述光网络协议处理 模块中的业务传输通道中。
15、 如权利要求 14所述的光网絡终端, 其特征在于, 所述通用业 务流映射模块包括: 报文特征配置模块、 报文特征匹配模块以及业务流 映射模块, .
所述报文特征配置模块, 用于接收来自所述业务处理模块的报文特 征配置参数并进行配置;
所述报文特征匹配模块, 用于接收来自所述业务处理模块的业务 流, 并将所述业务流与所述报文特征配置模块已配置的报文特征进行匹 配, 在二者匹配时, 停止比较操作, 并向所述业务流映射模块发送业务 流映射指令;
所述业务流映射模块, 接收来自所述报文特征匹配模块的业务流映 射指令, 并将所述业务流映射到指定的业务传输通道中。
16、 如权利要求 15 所述的光网络终端, 其特征在于, 所述报文特 征匹配模块为: 第一报文特征匹配模块, 用于接收来自所述业务处理模 块的业务流, 并逐一根据所述报文特征配置模块已配置的报文特征偏移 字节数确定业务流数据帧中, 具有与对应的报文特征相同字节数的部分 字节, 并将其与对应的报文特征进行比较, 在二者匹配时, 停止比较操 作, 并向所述业务流映射模块发送映射指令。
17、 如权利要求 15 所述的光网络终端, 其特征在于, 所述报文特 征匹配模块为: 第二报文特征匹配模块, 用于接收来自所述业务处理模 块的业务流, 并逐一将已配置的报文特征与对应的掩码进行按位与操 作, 得到第一操作结果, 将根据对应的报文特征偏移字节数确定的业务 流数据帧中, 具有与所述报文特征相同字节数的部分字节与所述掩码进 行按位与操作, 得到第二操作结果, 比较第一操作结果和第二操作, 在 二者匹配时, 停止比较操作, 并向所述业务流映射模块发送映射指令。
18、 如权利要求 15至 17任一项所述的光网络终端, 其特征在于, 所述通用业务流映射模块进一步包括: 优先级确定模块,
所述业务流映射模块, 进一步用于向所述优先级确定模块发送优先 级确定指令; 接收来自所述优先级确定模块的反馈信息, 将所述业务流 映射到指定的业务传输通道中;
所述优先级确定模块, 接收来自所述业务流映射模块的优先级确定 指令, 确定标记所述业务流的优先级, 并向所述业务流映射模块发送反 馈信息; 或者重新标记所述业务流的优先级, ^据重新标记的优先级确 定所述指定的业务传输通道, 并向所述业务流映射模块发送反馈信息。
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US8189471B2 (en) 2012-05-29
ES2454965T3 (es) 2014-04-14
EP1978654B1 (en) 2014-01-08
US20080273878A1 (en) 2008-11-06
EP1978654A1 (en) 2008-10-08
EP1978654A4 (en) 2009-07-22

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