WO2010037300A1 - 数据传输的映射方法、装置及系统 - Google Patents

数据传输的映射方法、装置及系统 Download PDF

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Publication number
WO2010037300A1
WO2010037300A1 PCT/CN2009/073806 CN2009073806W WO2010037300A1 WO 2010037300 A1 WO2010037300 A1 WO 2010037300A1 CN 2009073806 W CN2009073806 W CN 2009073806W WO 2010037300 A1 WO2010037300 A1 WO 2010037300A1
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WIPO (PCT)
Prior art keywords
information
tunnel information
service
data
packet
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PCT/CN2009/073806
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English (en)
French (fr)
Inventor
郑若滨
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华为技术有限公司
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Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to EP09817214.1A priority Critical patent/EP2326059B1/en
Publication of WO2010037300A1 publication Critical patent/WO2010037300A1/zh
Priority to US13/070,254 priority patent/US8467683B2/en

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04JMULTIPLEX COMMUNICATION
    • H04J14/00Optical multiplex systems
    • H04J14/02Wavelength-division multiplex systems
    • H04J14/0227Operation, administration, maintenance or provisioning [OAMP] of WDM networks, e.g. media access, routing or wavelength allocation
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00Routing or path finding of packets in data switching networks
    • H04L45/50Routing or path finding of packets in data switching networks using label swapping, e.g. multi-protocol label switch [MPLS]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00Routing or path finding of packets in data switching networks
    • H04L45/68Pseudowire emulation, e.g. IETF WG PWE3
    • 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
    • H04L47/24Traffic characterised by specific attributes, e.g. priority or QoS
    • H04L47/2441Traffic characterised by specific attributes, e.g. priority or QoS relying on flow classification, e.g. using integrated services [IntServ]
    • 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
    • H04L47/2491Mapping quality of service [QoS] requirements between different networks
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00Traffic control in data switching networks
    • H04L47/70Admission control; Resource allocation
    • H04L47/82Miscellaneous aspects
    • H04L47/825Involving tunnels, e.g. MPLS
    • 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
    • H04L2212/00Encapsulation of packets
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04QSELECTING
    • H04Q11/00Selecting arrangements for multiplex systems
    • H04Q11/0001Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0062Network aspects
    • H04Q11/0071Provisions for the electrical-optical layer interface
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04QSELECTING
    • H04Q11/00Selecting arrangements for multiplex systems
    • H04Q11/0001Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0062Network aspects
    • H04Q2011/0077Labelling aspects, e.g. multiprotocol label switching [MPLS], G-MPLS, MPAS
    • 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 communications, and in particular, to a data transmission mapping method, apparatus, and system. Background technique
  • P0N is an Optical Network Terminal (OMT).
  • OLT Optical Network Terminal
  • the optical distribution network (0DN) and the optical network unit (ONU) are combined.
  • the OLT provides a network side interface and connects to at least one 0DN.
  • the 0NU provides a user-side interface and connects to the 0DN.
  • the 0DN transmits the downlink data of the 0LT to each 0NU by the optical branch, and the 0DN transmits the uplink data of the 0NU to the 0LT through the aggregation.
  • Ethernet Passive Optical Network EP0N
  • GP0N Gigabit Passive Optical Network
  • the OLT directly allocates a transmission time window for the ONU; 0LT is the service allocated by the 0NU.
  • the identification of the transmission channel is called the Logical Link Identifier (LLID).
  • the service transmission channel is called GEM PORT (GP0N Encapsulation Method PORT ); ONU supports at least one Transmission Container (T-CONT), and T-CONT supports at least one GEM P0RT.
  • GEM PORT GP0N Encapsulation Method PORT
  • T-CONT Transmission Container
  • GEM P0RT GEM P0RT
  • a packet switching network (PSN) tunnel is a data transmission path formed by a PE (Provider Edge) across a PSN network to a peer PE.
  • Pseudo Wires (PW) is a PSN tunnel. And it can be recovered in a PSN tunnel. Use multiple PWs.
  • the two carrier edge devices PE1 and PE2 provide at least one PW for the user edge devices CE1 and CE2 to which they are connected, so that the corresponding CEs can communicate with each other on the PSN to pass the PW-PDUs through the PSN.
  • the tunnel is transmitted to the PE2; the PE2 decapsulates the received PW-PDU to obtain a local data unit; and sends the local data unit to the CE2.
  • the encapsulation mode of the PSN tunnel and the PW is usually in a multi-protocol label switching (Mul t i Protoco l Labe l Swi tch, MPLS) encapsulation mode.
  • Mul t i Protoco l Labe l Swi tch, MPLS multi-protocol label switching
  • the MPLS packet has 32Bit; 20Bit is used as the MPLS label (Labe l) information, and the MPLS label information is used to identify the path forwarding destination address; the other 3Bit in the packet is usually used as the service level (C la ss).
  • the Serv ice , CoS information, the CoS information is used to identify a service level of the forwarded data packet.
  • the inventors have found that at least the following problems exist in the prior art:
  • the data transmission path is both a P0N service transmission channel. It is also a ⁇ and / or PSN tunnel.
  • P0N service transmission channels, PWs, and/or PSN tunnels can provide different quality of service (QoS) for data transmission.
  • QoS quality of service
  • the prior art cannot implement the QoS of data transmission, and the P0N service transmission channel and PW and/ Or mapping of PSN tunnels.
  • the embodiment of the present invention provides a data transmission mapping method, and after the P0N service transmission channel is mapped with the PW and/or the PSN tunnel, the data transmission is guaranteed by QoS.
  • a mapping method for data transmission including:
  • the service flow including at least two data packets
  • the multi-protocol label switching tunnel information includes self-attribute information, service level information, and/or label information in the packet-switched network tunnel information and/or pseudo-line information;
  • the data packets are classified according to the multi-protocol label switching tunnel information, and the classified data packets are respectively mapped to service transmission channels of different passive optical networks.
  • an embodiment of the present invention provides a mapping device for data transmission. After mapping a P0N service transmission channel with a PW and/or a PSN tunnel, data transmission is guaranteed by QoS.
  • a mapping device for data transmission comprising:
  • a service interface unit configured to receive a service flow, where the service flow includes at least two data packets;
  • a tunnel information unit configured to acquire multi-protocol label switching tunnel information of the data packet; and the multi-protocol label switching tunnel information includes packet switching Self attribute information, service level information, and/or tag information in the network tunnel information and/or pseudowire information;
  • a service quality mapping unit configured to classify the data packets according to the multi-protocol label switching tunnel information, and map the classified data packets to service transmission channels of different passive optical networks respectively;
  • a passive optical network sending unit is configured to send a data packet through a service transmission channel to which the data packet is mapped.
  • an embodiment of the present invention provides a mapping system for data transmission. After mapping a P0N service transmission channel with a PW and/or a PSN tunnel, data transmission is guaranteed by QoS.
  • a mapping system for data transmission comprising an optical network unit and an optical line terminal, wherein the optical network unit and the optical line terminal have at least one service transmission channel;
  • the optical network unit After the optical network unit receives the service flow including the at least two data packets, acquiring the multi-protocol label switching tunnel information of the data packet; classifying the data packet according to the multi-protocol label switching tunnel information, and classifying the data packet
  • the data packets are respectively mapped to the service transmission channels of different passive optical networks and then sent to the optical line terminals;
  • the optical line terminal Or acquiring, by the optical line terminal, the multi-protocol label switching tunnel information of the data packet after receiving the service flow including the at least two data packets; and the data packet according to the multi-protocol label switching tunnel information Performing classification, mapping the classified data packets to service transmission channels of different passive optical networks, and transmitting the data packets to the optical network unit;
  • the multi-protocol label switching tunnel information includes self-attribute information, service level information, and/or tag information in the packet-switched network tunnel information and/or pseudo-line information.
  • the method, device and system for mapping data transmission solve the problem that the data transmission cannot be realized to ensure data transmission by mapping the data packets to the service transmission channels of different passive optical networks according to the multi-protocol label switching tunnel information.
  • QoS is a prerequisite for the mapping between the P0N service transmission channel and the PW and/or PSN tunnel. Therefore, after the P0N service transmission channel is mapped with the PW and/or PSN tunnel, the data transmission is guaranteed by QoS.
  • 1 is a network architecture diagram of a P0N in the prior art
  • FIG. 3 is a schematic diagram of a mapping method for data transmission according to an embodiment of the present invention.
  • FIG. 4 is a schematic diagram of another method for mapping data transmission according to an embodiment of the present invention.
  • FIG. 5 is a structural diagram of a data transmission mapping apparatus according to an embodiment of the present invention.
  • FIG. 6 is a structural diagram of an optical line terminal for data transmission according to an embodiment of the present invention.
  • FIG. 7 is a structural diagram of an optical network unit for data transmission according to an embodiment of the present invention.
  • FIG. 8 is a structural diagram of a mapping system for data transmission according to an embodiment of the present invention.
  • FIG. 9( a ) is a schematic diagram of a 0NU or an OLT mapping a data packet of the same PSN tunnel and the same PW to the same GEM PORT according to an embodiment of the present invention; (b) in the embodiment of the present invention, one user corresponds to one In the case of a layer PSN tunnel, the 0NU or the OLT maps the data packets of all PWs of the same PSN tunnel to the same GEM PORT; (c) corresponds to a user in the embodiment of the present invention. In the case of an outer PSN tunnel, 0NU or OLT maps the data packets of all PWs of the same PSN tunnel to the same GEM PORT schematic;
  • FIG. 10( a ) is a schematic diagram of a 0NU or 0LT mapping a data packet of the same CoS and the same label to the same GEM PORT in the case that one user corresponds to one MPLS label according to an embodiment of the present invention
  • the 0NU or the OLT maps the data packets of the same CoS and the same label to the same GEM PORT;
  • 0NU or OLT maps all CoS packets of the same label to the same GEM PORT schematic;
  • 0NU or 0LT will be the same The data packets of all CoSs of the label are mapped to the same GEM PORT;
  • 0NU or OLT maps the data packets of all CoSs of the label to the same GEM PORT;
  • the embodiment of the present invention provides a data transmission mapping method.
  • the mapping method of the data transmission is described below in the uplink direction and the downlink direction, respectively.
  • the mapping method for data transmission in the embodiment of the present invention includes: 301, 0NU receives a service flow, where the service flow includes at least two data packets;
  • the 0NU receives the traffic flow transmitted from the user side, and the traffic flow includes at least two data packets.
  • the ONU acquires multi-protocol label switching tunnel information of the data packet.
  • the multi-protocol label switching tunnel information includes self-attribute information, service level information, and/or label in the packet-switched network tunnel information and/or pseudo-line information. information;
  • the data packet received by the 0NU does not carry the MPLS tunnel information; 0NU adds the MPLS tunnel information to the data packet.
  • the MPLS tunnel information includes self-attribute information, service level information, and/or label information in the PSN tunnel information and/or the PW information.
  • the self-attribute information in the PSN tunnel information and/or the PW information includes different distinctions. Attribute identification of PSN tunnel information and/or PW information.
  • the NU classifies the data packet according to the multi-protocol label switching tunnel information, and maps the classified data packet to a service transmission channel of a different passive optical network.
  • the MPLS tunnel information includes PSN tunnel information and/or PW information; the PSN tunnel information includes its own attribute information; and the PW information includes its own attribute information.
  • the 0NU can distinguish each PSN tunnel or each PW according to its own attribute information in the PSN tunnel information and/or PW information.
  • the ONU classifies the data packet according to the self-attribute information, and maps the classified data packets to service transmission channels of different passive optical networks, including:
  • the 0NU classifies the data packets of the same PSN tunnel information and the own property information of the same PW information into one class, which will be divided into the same.
  • the class's packets are mapped into the service transmission channel of the same passive optical network. That is, packets of the same PSN tunnel and the same PW are grouped into one class and mapped to the same GEM P0RT/LL ID.
  • the 0NU maps the data packets of the PSN tunnel 1 and the PW 1 01 to the GEM P0RT1 1 to transmit the PSN.
  • the data packets of tunnel 1, PW1 02 are mapped to GEM P0RT12 transmission, ..., PSN tunnel 1,
  • the PW1 02 packet is mapped to the GEM P0RT1 5 transport.
  • the 0NU divides the data packets of the same attribute information in the same PSN tunnel information into one class, and maps the data packets divided into the same class into the same passive.
  • the service transmission channel of the optical network That is, all PW packets of the same PSN tunnel are divided into one class and mapped to the same GEM P0RT/LLID.
  • 0NU will be all PWs of the PSN tunnel 1 in the case where the user 11 corresponds to the PSN tunnel 1 and the user 12 corresponds to the PSN tunnel 1.
  • the PW101 and PW102 and PW103) packets are mapped to the GEM P0RT11 transmission, and all PW (PW101 and PW10 2 ) packets of the PSN Tunnel 2 are mapped to the GEM P0RTU transmission.
  • PW101 and PW10 2 are mapped to the GEM P0RTU transmission.
  • 0NU maps all PW (PW101 and PW1 02) packets of PSN tunnel 1 to GEM P0RT12 transmission when user 11 corresponds to PW101 and user 12 corresponds to PW102, and PSN tunnel 1 is All PW (PW101 and PW1 02) packets are mapped to GEM P0RT1 3 transmissions, and all PW (PW1 01) packets of PSN Tunnel 3 are mapped to GEM P0RT11 transmissions.
  • the ONU after receiving the data packet, adds PSN tunnel information and/or PW information to the data packet; and classifies the data packet according to the own attribute information in the PSN tunnel information and/or the PW information. And map the same type of data packets into the same P0N service transmission channel.
  • Different PWs and/or PSN tunnels provide different QoS for data transmission, and perform classification mapping according to the PSN tunnel information and/or the own attribute information in the PW information, so as to ensure the QoS of data transmission, and perform P0N service transmission. Mapping of channels to PW and/or PSN tunnels.
  • the PSN tunnel information further includes: service level information and label information; and the PW information further includes: service level information and label information.
  • the 0NU may further classify the data packet according to the service level information and/or the label information in the PSN tunnel information or the PW information, and map the classified data packets to different service transmission channels of the passive optical network, including :
  • the data packets of the same service level information and the same tag information are divided into one class, and the data packets divided into the same class are mapped into the same passive.
  • the service transmission channel of the optical network That is, packets of the same CoS and the same tag are grouped into one class and mapped to the same GEM P0RT/LLID.
  • 0NU corresponds to user 1 1
  • the data packets of the CoS1 and the MPLS label 101 are mapped to the GEM PORTll transmission
  • the data packets of the CoS2 and the MPLS label 101 are mapped to the GEM P0RT12 for transmission.
  • the data packets of the CoS1 and the MPLS label 101 are mapped to the GEM PORTll transmission, and the data packets of the CoS1 and MPLS label 102 are mapped to the GEM.
  • P0RT12 transmits, ..., maps the packets of CoS2 and MPLS label 102 to GEM P0RT15 transmission.
  • the ONU divides the data packets of the same tag information into one class according to the label information in the PSN tunnel information or the PW information, and maps the data packets divided into the same class into the service transmission channel of the same passive optical network. That is, all CoS packets of the same tag are grouped into one class and mapped to the same GEM P0RT/LLID.
  • FIG. 10(c) in the case where the user 11 corresponds to the MPLS label 101 and the user 12 corresponds to the MPLS label 102, all the CoS of the MPLS label 101 are used.
  • the packets of CoS1 and CoS2 and CoS3) are mapped to the GEM PORTll transmission, and all CoS (CoS1 and CoS2) packets of the MPLS label 102 are mapped to the GEM P0RT12 transmission.
  • FIG. 10(c) in the case where the user 11 corresponds to the MPLS label 101 and the user 12 corresponds to the MPLS label 102, all the CoS of the MPLS label 101 are used.
  • the packets of CoS1 and CoS2 and CoS3) are mapped to the GEM PORTll transmission
  • all CoS (CoS1 and CoS2) packets of the MPLS label 102 are mapped to the GEM P0RT12 transmission.
  • 0NU maps all CoS (CoS1 and CoS2) packets of the MPLS label 101 to the GEM P0RT12 transmission when the user 11 corresponds to CoS1 and the user 12 corresponds to CoS2, and all the MPLS labels 102 are transmitted.
  • the packets of CoS (CoSl and CoS2) are mapped to the GEM P0RT13 transmission, and all CoS (CoSl) packets of the MPLS label 103 are mapped to the GEM PORTll transmission.
  • 0NU divides the data packets of the same service level information into one class according to the service level information in the PSN tunnel information or the PW information, and maps the data packets divided into the same class into the service transmission channel of the same passive optical network. That is, packets of all tags of the same CoS are grouped into one class and mapped to the same GEM P0RT/LLID.
  • FIGS. 10(e) and (f) in the case where the user 11 corresponds to the MPLS label 101 and the user 12 corresponds to the MPLS label 102, all MPLS labels (labels) of the CoS1 are used.
  • the packets of 101 and 102) are mapped to the GEM P0RT12 transmission
  • the packets of all MPLS labels (label 101 and label 102) of CoS2 are mapped to the GEM P0RT13 transmission
  • Packets of all MPLS labels (labels 01) of CoS 3 are mapped to GEM P0RT1 1 transmissions.
  • 0NU maps the packets of all MPLS labels (label 101 and label 102 and label 103) of CoS l to the case where user 1 1 corresponds to CoS 1 and user 12 corresponds to CoS 2 .
  • the GEM PORT 1 1 transport maps the packets of all MPLS labels (label 01 and label 102) of CoS2 to the GEM PORT 12.
  • 0NU needs to map GEM PORT to T-C0NT in one of the following ways:
  • the 0NU maps the GEM PORTs of the same service level into the same T_C0NT according to the service level information in the PSN tunnel information or the PW information.
  • the ONU may further classify the data packet according to the service level information and/or the label information in the PSN tunnel information or the PW information, and map the same type of data packet into the service transmission channel of the same P0N. .
  • the service level information and/or label information in the PSN tunnel information or in the PW information identifies the QoS requirements of the data packet transmission in more detail, and classifies according to the service level information and/or label information in the PSN tunnel information or the PW information.
  • the mapping is further implemented on the premise of ensuring the QoS of the data transmission, and mapping the P0N service transmission channel to the PW and/or the PSN tunnel.
  • the mapping method for data transmission in the embodiment of the present invention includes:
  • the OLT receives a service flow, where the service flow includes at least two data packets.
  • the 0LT receives the traffic flow transmitted from the network side, and the service flow includes at least two data packets.
  • 0LT acquires multi-protocol label switching tunnel information of the data packet;
  • the multi-protocol label switching tunnel information includes self-attribute information, service level information, and/or label in the packet-switched network tunnel information and/or pseudo-line information.
  • the data packet received by the 0LT carries the MPLS tunnel information; the 0LT exchanges the MPLS tunnel information carried by the data packet.
  • the MPLS tunnel information includes PSN tunnel information And/or self-attribute information, service level information, and/or tag information in the PW information; the self-attribute information in the PSN tunnel information and/or the PW information includes attributes that can distinguish different PSN tunnel information and/or PW information. logo.
  • the OLT classifies the data packet according to the multi-protocol label switching tunnel information, and maps the classified data packet to a service transmission channel of a different passive optical network.
  • the MPLS tunnel information includes PSN tunnel information and/or PW information; the PSN tunnel information includes its own attribute information; and the PW information includes its own attribute information.
  • the 0LT can distinguish each PSN tunnel or each PW according to its own attribute information in the PSN tunnel information and/or PW information.
  • the OLT classifies the data packets according to the self-attribute information, and maps the classified data packets to service transmission channels of different passive optical networks, including:
  • the 0LT classifies the data packets of the same PSN tunnel information and the own property information of the same PW information into one class, and will be divided into the same.
  • the class's packets are mapped into the service transmission channel of the same passive optical network. That is, packets of the same PSN tunnel and the same PW are grouped into one class and mapped to the same GEM P0RT/LLID.
  • the 0LT maps the data packets of the PSN tunnel 1 and the PW 1 01 to the GEM P0RT 11 transmission, and the PSN tunnel is used. 1.
  • the PW102 packet is mapped to the GEM P0RT12 transmission, and the PSN tunnel is 1.
  • the PW102 packet is mapped to the GEM P0RT1 5 transport. 1.
  • the 0LT classifies the data packets of the same attribute information in the same PSN tunnel information into one class, and maps the data packets divided into the same class into the service transmission channel of the same passive optical network. That is, all PW packets of the same PSN tunnel are divided into one class and mapped to the same GEM P0RT/LLID.
  • 0LT will all PWs of the PSN tunnel 1 in the case where the user 11 corresponds to the PSN tunnel 1 and the user 12 corresponds to the PSN tunnel 1.
  • the PW101 and PW102 and PW103) packets are mapped to the GEM P0RT11 transmission, and all PW (PW101 and PW102) packets of the PSN Tunnel 2 are mapped to the GEM P0RT12 transmission.
  • the OLT after receiving the data packet, exchanges the PSN tunnel information and/or the PW information carried by the data packet, and classifies the data packet according to the self-attribute information in the PSN tunnel information and/or the PW information.
  • the same type of data packets are mapped into the same P0N service transmission channel.
  • Different PWs and/or PSN tunnels provide different QoS for data transmission, and then perform classification mapping according to the self-attribute information in the PSN tunnel information and/or PW information, so as to ensure the QoS of data transmission, P0N is performed. Mapping of service transmission channels to PW and/or PSN tunnels.
  • the PSN tunnel information further includes: service level information and label information; and the PW information further includes: service level information and label information.
  • the 0LT may further classify the data packet according to the service level information and/or the label information in the PSN tunnel information or the PW information, and map the classified data packets to the service transmission channels of different passive optical networks, including :
  • the OLT divides the data packets of the same service level information and the same tag information into one class according to the service level information and the tag information in the PSN tunnel information or the PW information, and maps the data packets divided into the same class into the same passive.
  • the service transmission channel of the optical network That is, packets of the same CoS and the same tag are grouped into one class and mapped to the same GEM P0RT/LLID.
  • FIG. 10(a) and (b) when the user 1 1 corresponds to the MPLS label 101 and the user 12 corresponds to the MPLS label 102, the CoS1 and the MPLS label 1 are used.
  • the 01 packet is mapped to the GEM P0RT11 transmission
  • the CoS2 and MPLS label 101 packets are mapped to the GEM P0RT12 transmission
  • the CoS2 and MPLS label 102 packets are mapped to the GEM P0RT15 transmission.
  • the data packets of the CoS1 and the MPLS label 101 are mapped to the GEM P0RT11, and the packets of the CoS1 and the MPLS label 102 are mapped. Transfer to GEM P0RT12, ..., will be CoS2, MPLS label 102 The packets are mapped to the GEM P0RT15 transmission.
  • 0LT divides the data packets of the same tag information into one class according to the tag information in the PSN tunnel information or the PW information, and maps the data packets divided into the same class into the service transmission channel of the same passive optical network. That is, all CoS packets of the same tag are grouped into one class and mapped to the same GEM P0RT/LLID.
  • FIG. 10(c) in the case where the user 11 corresponds to the MPLS label 101 and the user 12 corresponds to the MPLS label 102, all the CoSs of the MPLS label 101 are used.
  • the packets of CoS1 and CoS2 and CoS3) are mapped to the GEM PORT1 transmission, and all CoS (CoS1 and CoS2) packets of the MPLS label 102 are mapped to the GEM P0RT12 transmission.
  • 0LT maps all CoS (CoS1 and CoS2) packets of the MPLS label 101 to the GEM P0RT12 transmission when the user 11 corresponds to CoS1 and the user 12 corresponds to CoS2, and all the MPLS labels 102 are transmitted.
  • the packets of CoS (CoSl and CoS2) are mapped to the GEM P0RT13 transmission, and all CoS (CoSl) packets of the MPLS label 103 are mapped to the GEM PORT1 transmission.
  • 0LT divides the data packets of the same service level information into one class according to the service level information in the PSN tunnel information or the PW information, and maps the data packets divided into the same class into the service transmission channel of the same passive optical network. That is, packets of all tags of the same CoS are grouped into one class and mapped to the same GEM P0RT/LLID.
  • FIG. 10(e) and (f) when the user 11 corresponds to the MPLS label 101 and the user 12 corresponds to the MPLS label 102, all MPLS labels (labels) of the CoS1 are used.
  • the data packet of 101 and the label 102) is mapped to the GEM P0RT12 transmission, and the data packets of all the MPLS labels (label 101 and label 102) of the CoS2 are mapped to the GEM P0RT13 transmission, and the data packets of all the MPLS labels (label 101) of the CoS3 are mapped.
  • GEM PORTl l In FIG.
  • 0LT maps data packets of all MPLS labels (label 101 and label 102 and label 103) of CoS1 to GEM PORT1 l transmission when user 11 corresponds to CoS1 and user 12 corresponds to CoS2. Packets of all MPLS labels (label 101 and label 102) of CoS2 are mapped to GEM PORT 12 transmissions.
  • the OLT may further classify the data packet according to the service level information and/or the label information in the PSN tunnel information or the PW information, and map the same type of data packet into the service transmission channel of the same P0N. .
  • the service level information and/or label information in the PSN tunnel information or in the PW information identifies the QoS requirements of the data packet transmission in more detail, and classifies according to the service level information and/or label information in the PSN tunnel information or the PW information.
  • the mapping is further implemented on the premise of ensuring the QoS of the data transmission, and mapping the P0N service transmission channel to the PW and/or the PSN tunnel.
  • the embodiment of the present invention provides a data transmission mapping apparatus.
  • the mapping device for data transmission in the embodiment of the present invention includes:
  • the QoS mapping unit 503 is configured to classify the data packet according to the multi-protocol label switching tunnel information, and map the classified data packet to a service transmission channel of a different passive optical network.
  • the MPLS tunnel information includes PSN tunnel information and/or PW information; the PSN tunnel information includes its own attribute information; and the PW information includes its own attribute information.
  • the attribute information in the PSN tunnel information and/or the PW information includes an attribute identifier that can distinguish different PSN tunnel information and/or PW information.
  • the QoS mapping unit 503 classifies the data packets according to the self-attribute information in the PSN tunnel information and/or the PW information, and maps the classified data packets to service transmission channels of different passive optical networks. .
  • the PSN tunnel information further includes: service level information and label information; and the PW information further includes: service level information and label information.
  • the quality of service mapping unit 503 maps the data packets to the service transmission channels of different passive optical networks according to the service level information and/or the label information in the PSN tunnel information or the PW information.
  • the mapping device for data transmission in the embodiment of the present invention needs to receive the data packet and obtain the multi-protocol label switching tunnel information of the data packet; after performing the classification mapping, the data packet needs to be sent.
  • the mapping device for data transmission in the embodiment of the present invention further includes:
  • the service interface unit 501 is configured to receive a service flow, where the service flow includes at least two data packets, and a tunnel information unit 502, configured to acquire multi-protocol label switching tunnel information of the data packet, where the multi-protocol label switching tunnel information includes Self-attribute information, service level information, and/or tag information in the packet switched network tunnel information and/or pseudowire information;
  • a passive optical network sending unit 504 configured to send a data packet by using a service transmission channel to which the data packet is mapped;
  • the QoS mapping unit 503 maps the data packets to the service transmission channels of different passive optical networks according to the multi-protocol label switching tunnel information, and implements the P0N service on the premise of ensuring the QoS of the data transmission. Mapping of transmission channels to PW and/or PSN tunnels.
  • the mapping means for data transmission includes an optical line terminal or an optical network unit. In the following, a specific implementation manner of a data transmission mapping device will be described by taking an optical line terminal and an optical network unit as examples.
  • the optical line terminal for data transmission in the embodiment of the present invention includes:
  • the QoS mapping unit 603 is configured to classify the data packet according to the multi-protocol label switching tunnel information, and map the classified data packet to a service transmission channel of a different passive optical network.
  • the MPLS tunnel information includes PSN tunnel information and/or PW information; the PSN tunnel information includes its own attribute information; and the PW information includes its own attribute information.
  • the attribute information in the PSN tunnel information and/or the PW information includes an attribute identifier that can distinguish different PSN tunnel information and/or PW information.
  • the QoS mapping unit 603 classifies the data packets according to the self-attribute information in the PSN tunnel information and/or the PW information, and maps the classified data packets to service transmission channels of different passive optical networks. , including:
  • the QoS mapping unit 603 divides the data of the self-attribute information in the same PSN tunnel information and the self-attribute information in the same PW information into one class according to the self-attribute information in the PSN tunnel information and the PW information, and will be classified into one class. Packets divided into the same class are mapped into service transmission channels of the same passive optical network. That is, packets of the same PSN tunnel and the same PW are divided into one class, which is mapped. Shoot to the same GEM P0RT/LL ID.
  • the service quality mapping unit 603 divides the data packets of the own attribute information in the same PSN tunnel information into one class according to the own attribute information in the PSN tunnel information, and maps the data packets divided into the same class into the same passive optical network. Service transmission channel. That is, all PW packets of the same PSN tunnel are divided into one class and mapped to the same GEM P0RT/LL ID.
  • the QoS mapping unit 603 classifies the data packets according to the self-attribute information in the PSN tunnel information and/or the PW information, and maps the same type of data packets into the service transmission channel of the same P0N.
  • Different PWs and/or PSN tunnels provide different QoS for data transmission, and perform classification and mapping according to the self-attribute information in the PSN tunnel information and/or PW information, so as to ensure the QoS of data transmission, and perform P0N service transmission. Mapping of channels to PW and/or PSN tunnels.
  • the PSN tunnel information further includes: service level information and label information; and the PW information further includes: service level information and label information.
  • the QoS mapping unit 603 may further classify the data packet according to the service level information and/or the label information in the PSN tunnel information or the PW information, and map the classified data packets to different passive lights respectively.
  • the service transmission channel of the network including:
  • the quality of service mapping unit 603 divides the data packets of the same service level information and the same tag information into one class according to the service level information and the tag information in the PSN tunnel information or the PW information, and is divided into the same type of data packet mapping.
  • a service transmission channel into the same passive optical network That is, packets of the same CoS and the same tag are grouped into one class and mapped to the same GEM P0RT/LL I D.
  • the QoS mapping unit 603 divides the data packets of the same tag information into one class according to the label information in the PSN tunnel information or the PW information, and maps the data packets divided into the same class into the service transmission channel of the same passive optical network. . That is, all CoS packets of the same tag are grouped into one class and mapped to the same GEM P0RT/LL ID.
  • the quality of service mapping unit 603 divides the data packets of the same service level information into one class according to the service level information in the PSN tunnel information or the PW information, and is divided into the same type of data packet mapping.
  • a traffic transmission channel that is injected into the same passive optical network. That is, packets of all tags of the same CoS are grouped into one class and mapped to the same GEM P0RT/LL ID.
  • the QoS mapping unit 603 may further classify the data packets according to the service level information and/or the label information in the PSN tunnel information or the PW information, and map the same type of data packets into the same P0N. Business transmission channel.
  • the service level information and/or label information in the PSN tunnel information or in the PW information identifies the QoS requirements of the data packet transmission in more detail, and classifies according to the service level information and/or label information in the PSN tunnel information or the PW information.
  • the mapping is further implemented on the premise of ensuring the QoS of the data transmission, and mapping the P0N service transmission channel to the PW and/or the PSN tunnel.
  • the optical line terminal for data transmission in the embodiment of the present invention before the optical line terminal of the data transmission performs the classification mapping, it also needs to receive the data packet and obtain the multi-protocol label switching tunnel information of the data packet; after performing the classification mapping, the data packet needs to be sent.
  • the optical line terminal for data transmission in the embodiment of the present invention further includes:
  • the service interface unit 601 is configured to receive a service flow, where the service flow includes at least two data packets, and a tunnel information unit 602, configured to exchange multi-protocol label switching tunnel information carried by the data packet; and the multi-protocol label switching tunnel information include self-attribute information, service level information, and/or tag information in the packet switched network tunnel information and/or pseudowire information;
  • the passive optical network sending unit 604 is configured to send the data packet through the service transmission channel to which the data packet is mapped.
  • the QoS mapping unit 603 performs categorization mapping on the data packets only in the downlink direction.
  • the following describes in detail the 0LT forwarding process for downlink data.
  • 0LT Forwarding process of downlink data including:
  • the service interface unit 601 receives the service flow on the network side, the service flow includes at least two data packets; the tunnel information unit 602 exchanges the multi-protocol label switching tunnel information carried by the data packet; the quality of service mapping unit 603 processes according to the tunnel information unit 602.
  • the MPLS tunnel information is mapped to the GEM P0RT/LL ID of the different passive optical network according to the foregoing method; the passive optical network sending unit 604 maps the GEM P0RT/LL through the data packet. ID sends the packet.
  • the optical network unit for data transmission includes: a quality of service mapping unit 703, configured to classify the data packet according to the multi-protocol label switching tunnel information, and use the classified data packet. Mapping to service transmission channels of different passive optical networks;
  • the MPLS tunnel information includes PSN tunnel information and/or PW information; the PSN tunnel information includes its own attribute information; and the PW information includes its own attribute information.
  • the attribute information in the PSN tunnel information and/or the PW information includes an attribute identifier that can distinguish different PSN tunnel information and/or PW information.
  • the QoS mapping unit 703 classifies the data packets according to the self-attribute information in the PSN tunnel information and/or the PW information, and maps the classified data packets to service transmission channels of different passive optical networks. , including:
  • the QoS mapping unit 703 divides the data of the self-attribute information in the same PSN tunnel information and the self-attribute information in the same PW information into one class according to the self-attribute information in the PSN tunnel information and the PW information, and will be classified into one class. Packets divided into the same class are mapped into service transmission channels of the same passive optical network. That is, packets of the same PSN tunnel and the same PW are grouped into one class and mapped to the same GEM P0RT/LL ID.
  • the service quality mapping unit 703 divides the data packets of the own attribute information in the same PSN tunnel information into one class according to the own attribute information in the PSN tunnel information, and maps the data packets divided into the same class into the same passive optical network. Service transmission channel. That is, all PW packets of the same PSN tunnel are divided into one class and mapped to the same GEM P0RT/LL ID.
  • the QoS mapping unit 703 classifies the data packets according to the self-attribute information in the PSN tunnel information and/or the PW information, and maps the same type of data packets into the service transmission channel of the same PON.
  • Different PWs and/or PSN tunnels provide different QoS for data transmission, and perform classification and mapping according to the self-attribute information in the PSN tunnel information and/or PW information, so as to ensure the QoS of data transmission, and perform P0N service transmission. Mapping of channels to PW and/or PSN tunnels.
  • the PSN tunnel information further includes: service level information and label information; and the PW information further includes: service level information and label information.
  • the service quality mapping unit 703 may further classify the data packet according to the service level information and/or the label information in the PSN tunnel information or the PW information, and map the classified data packets to different passive lights respectively.
  • the service transmission channel of the network including:
  • the quality of service mapping unit 703 divides the data packets of the same service level information and the same tag information into one class according to the service level information and the tag information in the PSN tunnel information or the PW information, and is divided into the same type of data packet mapping.
  • the QoS mapping unit 703 divides the data packets of the same tag information into one class according to the tag information in the PSN tunnel information or the PW information, and maps the data packets divided into the same class into the service transmission channel of the same passive optical network. . That is, all CoS packets of the same tag are grouped into one class and mapped to the same GEM P0RT/LL ID.
  • the quality of service mapping unit 703 divides the data packets of the same service level information into one class according to the service level information in the PSN tunnel information or the PW information, and maps the data packets divided into the same class into the services of the same passive optical network. Transmission channel. That is, packets of all tags of the same CoS are grouped into one class and mapped to the same GEM P0RT/LL ID.
  • the quality of service mapping unit 703 also needs to map the GEM PORT to the T-C0NT in one of the following ways:
  • the quality of service mapping unit 703 maps the GEM PORT of the same service level information into the same T-C0NT according to the service level information in the PSN tunnel information or the PW information.
  • the QoS mapping unit 703 may further classify the data packets according to the service level information and/or the label information in the PSN tunnel information or the PW information, and map the same type of data packets into the same P0N. Business transmission channel.
  • the service level information and/or the label information identifies the QoS requirements of the data packet in more detail, and performs classification mapping according to the service level information and/or the label information in the PSN tunnel information or the PW information, and further implements to ensure data transmission. Based on the QoS, the mapping between the P0N service transmission channel and the PW and/or PSN tunnel is performed.
  • the optical network unit for data transmission before the optical network unit for data transmission performs classification mapping, it also needs to receive the data packet and obtain the multi-protocol label switching tunnel information of the data packet; after performing the classification mapping, the data packet needs to be sent.
  • the optical network unit for data transmission in the embodiment of the present invention further includes:
  • the service interface unit 701 is configured to receive a service flow, where the service flow includes at least two data packets, and a tunnel information unit 702, configured to add multi-protocol label switching tunnel information to the data packet, where the multi-protocol label switching tunnel information includes Self-attribute information, service level information, and/or tag information in the packet switched network tunnel information and/or pseudowire information;
  • the passive optical network sending unit 704 is configured to send the data packet through the service transmission channel to which the data packet is mapped.
  • the QoS mapping unit 703 performs categorization mapping on the data packets only in the uplink direction. The following describes in detail the process of forwarding the upstream data by 0NU. 0NU forwarding process for uplink data, including:
  • the service interface unit 701 receives the service flow on the user side, the service flow includes at least two data packets; the tunnel information unit 702 adds multi-protocol label switching tunnel information to the data packet; and the quality of service mapping unit 703 processes the information according to the tunnel information unit 702.
  • the MPLS tunnel information is mapped to the GEM P0RT/LL ID of the different passive optical network according to the foregoing method; the GEM P0RT/LL ID mapped by the passive optical network sending unit 704 through the data packet Send a packet.
  • the embodiment of the present invention provides a data transmission mapping system.
  • the mapping system for data transmission in the embodiment of the present invention includes an optical network unit 801 and an optical line terminal 802, and the optical network unit 801 and the optical line terminal 802 have at least one service transmission channel;
  • the optical network unit 801 After the optical network unit 801 receives the service flow including at least two data packets, acquiring the Multi-protocol label switching tunnel information of the data packet; classifying the data packet according to the multi-protocol label switching tunnel information, mapping the classified data packet to a service transmission channel of a different passive optical network, and transmitting the data packet to the optical transmission channel Line terminal 802;
  • the optical line terminal 802 obtains the multi-protocol label switching tunnel information of the data packet after receiving the service flow including the at least two data packets; classifying the data packet according to the multi-protocol label switching tunnel information, and classifying the data packet
  • the subsequent data packets are respectively mapped to the service transmission channels of different passive optical networks and then sent to the optical network unit 801;
  • the multi-protocol label switching tunnel information includes self-attribute information, service level information, and/or tag information in the packet-switched network tunnel information and/or pseudo-line information.
  • the storage medium may be a magnetic disk, an optical disk, a Read-Only Memory (ROM), or a Random Acces s Memory (RAM).

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Description

数据传输的映射方法、 装置及系统 本申请要求于 2008 年 9 月 24 日提交中国专利局、 申请号为 200810222778. 发明名称为 "数据传输的映射方法、 装置及系统" 的中国 专利申请的优先权, 其全部内容通过引用结合在本申请中。
技术领域
本发明涉及通信领域, 尤其涉及一种数据传输的映射方法、 装置及系统。 背景技术
无源光网络 ( Passive Optical Network, PON )作为一种宽带光接入技 术, 釆用点到多点的拓朴结构, 如图 1 所示, P0N 由光线路终端 (Optical Network Terminal, 0LT)、 无源分光网络 ( Optical Distribution Network, 0DN)和光网络单元 (Optical Network Unit, ONU)组成。 OLT提供网络侧接 口, 并连接至少一个 0DN; 0NU提供用户侧接口, 连接 0DN; 0DN将 0LT 的 下行数据通过光分路传输到各个 0NU , 同时 0DN将 0NU 的上行数据通过汇 聚传输到 0LT。
以太网无源光网络 ( Ethernet Pass ive Optical Network , EP0N ) 和吉 比特无源光网络 (Gigabit Passive Optical Network, GP0N )是两种最新的 PON技术。
在 EP0N中, OLT为 ONU直接分配传输时间窗口; 0LT为 0NU分配的业务 传输通道的标识称为還辑链路标识(Logical Link Identifier, LLID)。
在 GP0N中, 业务传输通道称为 GEM PORT ( GP0N Encapsulation Method PORT ); ONU支持至少一个传输容器(Transmission Container , T-CONT ), T-CONT 支持至少一个 GEM P0RT。
分组交换网络 (Packet Switch Network, PSN)隧道是一个 PE (Provider Edge, 运营商边缘设备)跨过 PSN网络到对端 PE所构成的数据传送路径。 伪 线(Pseudo Wires, PW )是一种 PSN隧道。 并且在一条 PSN隧道中还可以复 用多条 PW。 如图 2所示, 两个运营商边缘设备 PE1和 PE2为它们所连接的用 户边缘设备 CE1和 CE2提供至少一条 PW,以使相应的 CE可以在 PSN上互相通 将所述 PW-PDU通过 PSN隧道传送给 PE2 ; PE2将接收的 PW-PDU进行解封装, 得到本地数据单元; 将所述本地数据单元发送给 CE2。
目前, PSN 隧道和 PW 的封装模式通常釆用多协议标签交换 (Mul t i Protoco l Labe l Swi tch , MPLS )封装模式。
MPLS报文有 32Bi t ; 其中的 20Bi t用作 MPLS标签(Labe l )信息, 所述 MPLS标签信息用于标识路径转发目的地址;报文中的另外 3Bi t通常用作服务 等级(C la s s of Serv ice , CoS )信息, 所述 CoS信息用于标识转发数据包的 服务等级。
在实现本发明的过程中, 发明人发现现有技术中至少存在如下问题: 在 网络既釆用无源光网络模式, 又釆用分组交换网络模式时, 数据传输路径既 是 P0N的业务传输通道, 也是 ΡΨ和 /或 PSN隧道。 P0N的业务传输通道、 PW 和 /或 PSN隧道均可为数据传输提供不同的服务质量 ( QoS ), 现有技术无法实 现以保证数据传输的 QoS为前提, 进行 P0N的业务传输通道与 PW和 /或 PSN 隧道的映射。
发明内容
一方面, 本发明的实施例提供一种数据传输的映射方法, 使 P0N 的业务 传输通道与 PW和 /或 PSN隧道映射后, 数据传输得到 QoS 保证。
为达到上述目的, 本发明的实施例釆用如下技术方案:
一种数据传输的映射方法, 包括:
接收业务流, 该业务流包括至少两个数据包;
获取所述数据包的多协议标签交换隧道信息; 所述多协议标签交换隧道 信息包括分组交换网络隧道信息中和 /或伪线信息中的自身属性信息、 服务等 级信息和 /或标签信息; 根据多协议标签交换隧道信息对所述数据包进行分类, 将所述分类后的 数据包分别映射到不同的无源光网络的业务传输通道。
一方面, 本发明的实施例提供一种数据传输的映射装置, 使 P0N 的业务 传输通道与 PW和 /或 PSN隧道映射后, 数据传输得到 QoS 保证。
为达到上述目的, 本发明的实施例釆用如下技术方案:
一种数据传输的映射装置, 包括:
业务接口单元, 用于接收业务流, 该业务流包括至少两个数据包; 隧道信息单元, 用于获取所述数据包的多协议标签交换隧道信息; 所述 多协议标签交换隧道信息包括分组交换网络隧道信息中和 /或伪线信息中的 自身属性信息、 服务等级信息和 /或标签信息;
服务质量映射单元, 用于根据多协议标签交换隧道信息对所述数据包进 行分类, 将所述分类后的数据包分别映射到不同的无源光网络的业务传输通 道;
无源光网络发送单元, 用于通过数据包映射到的业务传输通道发送数据 包。
一方面, 本发明的实施例提供一种数据传输的映射系统, 使 P0N 的业务 传输通道与 PW和 /或 PSN隧道映射后, 数据传输得到 QoS 保证。
为达到上述目的, 本发明的实施例釆用如下技术方案:
一种数据传输的映射系统, 包括光网络单元和光线路终端, 所述光网络 单元和光线路终端具有至少一条业务传输通道;
其中光网络单元接收到包括至少两个数据包的业务流后, 获取所述数据 包的多协议标签交换隧道信息; 根据多协议标签交换隧道信息对所述数据包 进行分类, 将所述分类后的数据包分别映射到不同的无源光网络的业务传输 通道后发送给光线路终端;
或者光线路终端接收到包括至少两个数据包的业务流后, 获取所述数据 包的多协议标签交换隧道信息; 根据多协议标签交换隧道信息对所述数据包 进行分类, 将所述分类后的数据包分别映射到不同的无源光网络的业务传输 通道后发送给光网络单元;
所述多协议标签交换隧道信息包括分组交换网络隧道信息中和 /或伪线 信息中的自身属性信息、 服务等级信息和 /或标签信息。
本发明实施例提供的数据传输的映射方法、 装置及系统, 通过按照多协 议标签交换隧道信息将数据包分别映射到不同的无源光网络的业务传输通 道, 解决了无法实现以保证数据传输的 QoS为前提, 进行 P0N的业务传输通 道与 PW和 /或 PSN隧道的映射的问题, 从而使 P0N的业务传输通道与 PW和 / 或 PSN隧道映射后, 数据传输得到 QoS 保证。
附图说明
为了更清楚地说明本发明实施例的技术方案, 下面将对实施例描述中所 需要使用的附图作一简单地介绍, 显而易见地, 下面描述中的附图仅仅是本 发明的一些实施例, 对于本领域普通技术人员来讲, 在不付出创造性劳动的 前提下, 还可以根据这些附图获得其他的附图。
图 1为现有技术中 P0N的网络架构图;
图 2为现有技术中 PWE 3网络参考模型图;
图 3为本发明实施例一种数据传输的映射方法示意图;
图 4为本发明实施例另一种数据传输的映射方法示意图;
图 5为本发明实施例一种数据传输的映射装置结构图;
图 6为本发明实施例一种数据传输的光线路终端结构图;
图 7为本发明实施例一种数据传输的光网络单元结构图;
图 8为本发明实施例一种数据传输的映射系统结构图;
图 9 ( a )为本发明实施例中, 0NU或 0LT将相同 PSN隧道、 且相同 PW的 数据包映射到同一个 GEM PORT的原理图; (b )为本发明实施例在一个用户对 应一个外层 PSN隧道的情况下, 0NU或 0LT将相同 PSN隧道的所有 PW的数据 包映射到同一个 GEM PORT的原理图; (c )为本发明实施例在一个用户对应多 个外层 PSN隧道的情况下, 0NU或 0LT将相同 PSN隧道的所有 PW的数据包映 射到同一个 GEM PORT的原理图;
图 1 0 ( a )为本发明实施例在一个用户对应一个 MPLS标签的情况下, 0NU 或 0LT将相同 CoS、 且相同标签的数据包映射到同一个 GEM PORT的原理图; ( b )为本发明实施例在一个用户对应一个 CoS的情况下, 0NU或 0LT将相同 CoS、 且相同标签的数据包映射到同一个 GEM PORT 的原理图; (c )为本发明 实施例在一个用户对应一个 MPLS标签的情况下, 0NU或 0LT将相同标签的所 有 CoS的数据包映射到同一个 GEM PORT的原理图; (d )为本发明实施例在一 个用户对应一个 CoS的情况下, 0NU或 0LT将相同标签的所有 CoS的数据包映 射到同一个 GEM PORT 的原理图; (e ) 为本发明实施例在一个用户对应一个 MPLS标签的情况下, 0NU或 0LT将相同 CoS的所有标签的数据包映射到同一 个 GEM PORT的原理图; ( f )为本发明实施例在一个用户对应一个 CoS的情况 下, 0NU或 0LT将相同 CoS的所有标签的数据包映射到同一个 GEM PORT的原 理图。
具体实施方式
下面将结合本发明实施例中的附图, 对本发明实施例中的技术方案进行 清楚、 完整地描述, 显然, 所描述的实施例仅仅是本发明一部分实施例, 而 不是全部的实施例。 基于本发明中的实施例, 本领域普通技术人员在没有作 出创造性劳动前提下所获得的所有其他实施例 , 都属于本发明保护的范围。
为了使 P0N的业务传输通道与 PW和 /或 PSN隧道映射后, 数据传输得到 QoS 保证, 本发明实施例提供一种数据传输的映射方法。 以下分别从上行方 向和下行方向, 对所述数据传输的映射方法进行阐述。
如图 3所示, 从上行方向, 本发明实施例数据传输的映射方法, 包括: 301、 0NU接收业务流, 该业务流包括至少两个数据包;
由 0NU到 0LT的上行方向, 0NU接收从用户侧传送的业务流, 该业务流包 括至少两个数据包。 302、 ONU获取所述数据包的多协议标签交换隧道信息; 所述多协议标签 交换隧道信息包括分组交换网络隧道信息中和 /或伪线信息中的自身属性信 息、 服务等级信息和 /或标签信息;
由 0NU到 0LT的上行方向, 0NU接收的数据包不携带 MPLS隧道信息; 0NU 为数据包添加 MPLS隧道信息。 所述 MPLS隧道信息包括 PSN隧道信息中和 /或 PW信息中的自身属性信息、服务等级信息和 /或标签信息; 所述 PSN隧道信息 中和 /或 PW信息中的自身属性信息包括能区分不同 PSN隧道信息和 /或 PW信 息的属性标识。
303、 0NU根据多协议标签交换隧道信息对所述数据包进行分类, 将所述 分类后的数据包分别映射到不同的无源光网络的业务传输通道。
所述 MPLS隧道信息包括 PSN隧道信息和 /或 PW信息; 所述 PSN隧道信息 包括自身属性信息; 所述 PW信息包括自身属性信息。 0NU根据 PSN隧道信息 中和 /或 PW信息中的自身属性信息能区分各 PSN隧道或各 PW。 ONU根据所述 自身属性信息将所述数据包进行分类, 将分类后的数据包分别映射到不同的 无源光网络的业务传输通道, 包括:
1、 0NU才艮据 PSN隧道信息中和 PW信息中的自身属性信息,将相同 PSN隧 道信息中的自身属性信息、 且相同 PW信息中的自身属性信息的数据包分成一 类, 将被分成同一类的数据包映射进同一无源光网络的业务传输通道。 也就 是, 相同 PSN 隧道、 且相同 PW 的数据包分成一类, 被映射到同一个 GEM P0RT/LL ID。
例如, 如图 9 ( a ) 所示, 0NU在用户 1 1对应 PSN隧道 1、 用户 12对应 PSN隧道 1的情况下,将 PSN隧道 1、 PW1 01的数据包映射到 GEM P0RT1 1传输, 将 PSN隧道 1、 PW1 02的数据包映射到 GEM P0RT12传输, ... ...,将 PSN隧道 1、
PW1 02的数据包映射到 GEM P0RT1 5传输。
2、 0NU根据 PSN隧道信息中的自身属性信息, 将相同 PSN隧道信息中的 自身属性信息的数据包分成一类, 将被分成同一类的数据包映射进同一无源 光网络的业务传输通道。也就是,相同 PSN隧道的所有 PW的数据包分成一类, 被映射到同一个 GEM P0RT/LLID。
例如, 如图 9 ( b )和( c )所示, 在图 9 ( b )中, 0NU在用户 11对应 PSN 隧道 1、 用户 12对应 PSN隧道 1的情况下, 将 PSN隧道 1的所有 PW ( PW101 和 PW102和 PW103 ) 的数据包映射到 GEM P0RT11传输, 将 PSN隧道 2的所有 PW ( PW101和 PW102 ) 的数据包映射到 GEM P0RTU传输。 在图 9 ( c ) 中, 0NU 在用户 11对应 PW101、 用户 12对应 PW102的情况下, 将 PSN隧道 1的所有 PW ( PW101和 PW1 02 ) 的数据包映射到 GEM P0RT12传输, 将 PSN隧道 1的所 有 PW ( PW101和 PW1 02 ) 的数据包映射到 GEM P0RT1 3传输, 将 PSN隧道 3的 所有 PW ( PW1 01 ) 的数据包映射到 GEM P0RT11传输。
本发明实施例中 0NU接收数据包后, 为所述数据包添加 PSN隧道信息和 / 或 PW信息; 才艮据 PSN隧道信息中和 /或 PW信息中的自身属性信息, 将所述数 据包分类, 并将同一类的数据包映射进同一 P0N的业务传输通道。 不同的 PW 和 /或 PSN隧道为数据传输提供不同的 QoS , 根据 PSN隧道信息中和 /或 PW信 息中的自身属性信息进行分类映射, 实现以保证数据传输的 QoS 为前提, 进 行 P0N的业务传输通道与 PW和 /或 PSN隧道的映射。
进一步地, PSN 隧道信息还包括: 服务等级信息和标签信息; PW信息还 包括: 服务等级信息和标签信息。
0NU还可以根据 PSN隧道信息中或 PW信息中的服务等级信息和 /或标签信 息将所述数据包进行分类, 将分类后的数据包分别映射到不同的无源光网络 的业务传输通道, 包括:
A、 0NU根据 PSN隧道信息中或 PW信息中的服务等级信息和标签信息,将 相同服务等级信息、 且相同标签信息的数据包分成一类, 将被分成同一类的 数据包映射进同一无源光网络的业务传输通道。 也就是, 相同 CoS、 且相同标 签的数据包分成一类, 被映射到同一个 GEM P0RT/LLID。
例如, 如图 10 ( a )和( b )所示, 在图 10 ( a ) 中, 0NU在用户 1 1对应 MPLS标签 101、用户 12对应 MPLS标签 102的情况下,将 CoSl、 MPLS标签 101 的数据包映射到 GEM PORTll传输, 将 CoS2、 MPLS标签 101的数据包映射到 GEM P0RT12传输, ......, 将 CoS2、 MPLS标签 102的数据包映射到 GEM P0RT15 传输。 在图 10 (b) 中, 0NU在用户 11对应 CoSl、 用户 12对应 CoS2的情况 下, 将 CoSl、 MPLS标签 101的数据包映射到 GEM PORTll传输, 将 CoSl、 MPLS 标签 102的数据包映射到 GEM P0RT12传输, ......, 将 CoS2、 MPLS标签 102 的数据包映射到 GEM P0RT15传输。 B、 ONU根据 PSN隧道信息中或 PW信息中 的标签信息, 将相同标签信息的数据包分成一类, 将被分成同一类的数据包 映射进同一无源光网络的业务传输通道。 也就是, 相同标签的所有 CoS 的数 据包分成一类, 被映射到同一个 GEM P0RT/LLID。
例如, 如图 10 (c)和(d)所示, 在图 10 (c) 中, 0NU在用户 11对应 MPLS标签 101、 用户 12对应 MPLS标签 102的情况下, 将 MPLS标签 101的所 有 CoS ( CoSl和 CoS2和 CoS3 ) 的数据包映射到 GEM PORTll传输, 将 MPLS标 签 102的所有 CoS (CoSl和 CoS2) 的数据包映射到 GEM P0RT12传输。 在图 10 (d) 中, 0NU在用户 11对应 CoSl、 用户 12对应 CoS2的情况下, 将 MPLS 标签 101的所有 CoS (CoSl和 CoS2) 的数据包映射到 GEM P0RT12传输, 将 MPLS标签 102的所有 CoS ( CoSl和 CoS2 ) 的数据包映射到 GEM P0RT13传输, 将 MPLS标签 103的所有 CoS ( CoSl ) 的数据包映射到 GEM PORTll传输。
C、 0NU根据 PSN隧道信息中或 PW信息中的服务等级信息, 将相同服务等 级信息的数据包分成一类, 将被分成同一类的数据包映射进同一无源光网络 的业务传输通道。 也就是, 相同 CoS 的所有标签的数据包分成一类, 被映射 到同一个 GEM P0RT/LLID。
例如, 如图 10 (e)和(f )所示, 在图 10 (e) 中, 0NU在用户 11对应 MPLS标签 101、 用户 12对应 MPLS标签 102的情况下, 将 CoSl的所有 MPLS 标签(标签 101和标签 102 )的数据包映射到 GEM P0RT12传输, 将 CoS2的所 有 MPLS标签(标签 101和标签 102 ) 的数据包映射到 GEM P0RT13传输, 将 CoS 3的所有 MPLS标签(标签 1 01 ) 的数据包映射到 GEM P0RT1 1传输。 在图 1 0 ( f ) 中, 0NU在用户 1 1对应 CoS l、 用户 12对应 CoS2的情况下, 将 CoS l 的所有 MPLS标签(标签 101和标签 1 02和标签 1 03 )的数据包映射到 GEM PORT 1 1 传输, 将 CoS2的所有 MPLS标签(标签 1 01和标签 1 02 )的数据包映射到 GEM PORT 12传输。
进一步, 当 P0N为 GP0N时, 0NU还需将 GEM PORT按以下几种方式中的一 种映射到 T-C0NT中:
1、 不同的 GEM PORT , 按 1: 1的关系映射进不同的 T-C0NT;
2、 不同的 GEM PORT , 按 N: 1的关系映射进不同的 T-C0NT;
3、 0NU根据 PSN隧道信息中或 PW信息中的服务等级信息, 将相同服务等 级的 GEM PORT映射进相同的 T_C0NT。
本发明实施例中 0NU还可进一步根据 PSN隧道信息中或 PW信息中的服务 等级信息和 /或标签信息, 将所述数据包分类, 并将同一类的数据包映射进同 一 P0N的业务传输通道。 PSN隧道信息中或 PW信息中的服务等级信息和 /或标 签信息更详细地标识了数据包对传输的 QoS要求, 根据 PSN隧道信息中或 PW 信息中的服务等级信息和 /或标签信息进行分类映射, 进一步实现以保证数据 传输的 QoS为前提, 进行 P0N的业务传输通道与 PW和 /或 PSN隧道的映射。
如图 4所示, 从下行方向, 本发明实施例数据传输的映射方法, 包括:
401、 0LT接收业务流, 该业务流包括至少两个数据包;
由 0LT到 0NU的下行方向, 0LT接收从网络侧传送的业务流, 该业务流包 括至少两个数据包。
402、 0LT获取所述数据包的多协议标签交换隧道信息; 所述多协议标签 交换隧道信息包括分组交换网络隧道信息中和 /或伪线信息中的自身属性信 息、 服务等级信息和 /或标签信息;
由 0LT到 0NU的下行方向, 0LT接收的数据包携带 MPLS隧道信息; 0LT 交换数据包携带的 MPLS隧道信息。 所述 MPLS隧道信息包括 PSN隧道信息中 和 /或 PW信息中的自身属性信息、 服务等级信息和 /或标签信息; 所述 PSN隧 道信息中和 /或 PW信息中的自身属性信息包括能区分不同 PSN隧道信息和 /或 PW信息的属性标识。
403、 0LT根据多协议标签交换隧道信息对所述数据包进行分类, 将所述 分类后的数据包分别映射到不同的无源光网络的业务传输通道。
所述 MPLS隧道信息包括 PSN隧道信息和 /或 PW信息; 所述 PSN隧道信息 包括自身属性信息; 所述 PW信息包括自身属性信息。 0LT根据 PSN隧道信息 中和 /或 PW信息中的自身属性信息能区分各 PSN隧道或各 PW。 0LT根据所述 自身属性信息将所述数据包进行分类, 将分类后的数据包分别映射到不同的 无源光网络的业务传输通道, 包括:
1、 0LT才艮据 PSN隧道信息中和 PW信息中的自身属性信息,将相同 PSN隧 道信息中的自身属性信息、 且相同 PW信息中的自身属性信息的数据包分成一 类, 将被分成同一类的数据包映射进同一无源光网络的业务传输通道。 也就 是, 相同 PSN 隧道、 且相同 PW 的数据包分成一类, 被映射到同一个 GEM P0RT/LLID。
例如, 如图 9 ( a ) 所示, 0LT在用户 1 1对应 PSN隧道 1、 用户 12对应 PSN隧道 1的情况下,将 PSN隧道 1、 PW1 01的数据包映射到 GEM P0RT11传输, 将 PSN隧道 1、 PW102的数据包映射到 GEM P0RT12传输, ... ...,将 PSN隧道 1、
PW102的数据包映射到 GEM P0RT1 5传输。 1、 0LT根据 PSN隧道信息中的自身 属性信息, 将相同 PSN 隧道信息中的自身属性信息的数据包分成一类, 将被 分成同一类的数据包映射进同一无源光网络的业务传输通道。 也就是, 相同 PSN隧道的所有 PW的数据包分成一类, 被映射到同一个 GEM P0RT/LLID。
例如, 如图 9 ( b )和( c )所示, 在图 9 ( b )中, 0LT在用户 11对应 PSN 隧道 1、 用户 12对应 PSN隧道 1的情况下, 将 PSN隧道 1的所有 PW ( PW101 和 PW102和 PW103 ) 的数据包映射到 GEM P0RT11传输, 将 PSN隧道 2的所有 PW ( PW101和 PW102 ) 的数据包映射到 GEM P0RT12传输。 在图 9 ( c ) 中, 0LT 在用户 11对应 PW101、 用户 12对应 PW102的情况下, 将 PSN隧道 1的所有 PW ( PW101和 PW1 02 ) 的数据包映射到 GEM P0RT12传输, 将 PSN隧道 1的所 有 PW ( PW101和 PW1 02 ) 的数据包映射到 GEM P0RT1 3传输, 将 PSN隧道 3的 所有 PW ( PW101 ) 的数据包映射到 GEM P0RT11传输。 本发明实施例中 0LT接 收数据包后, 交换所述数据包携带的 PSN隧道信息和 /或 PW信息; 根据 PSN 隧道信息中和 /或 PW信息中的自身属性信息, 将所述数据包分类, 并将同一 类的数据包映射进同一 P0N的业务传输通道。 不同的 PW和 /或 PSN隧道为数 据传输提供不同的 QoS ,才艮据 PSN隧道信息中和 /或 PW信息中的自身属性信息 进行分类映射, 实现以保证数据传输的 QoS为前提, 进行 P0N的业务传输通 道与 PW和 /或 PSN隧道的映射。
进一步地, PSN 隧道信息还包括: 服务等级信息和标签信息; PW信息还 包括: 服务等级信息和标签信息。
0LT还可以根据 PSN隧道信息中或 PW信息中的服务等级信息和 /或标签信 息将所述数据包进行分类, 将分类后的数据包分别映射到不同的无源光网络 的业务传输通道, 包括:
A、 OLT根据 PSN隧道信息中或 PW信息中的服务等级信息和标签信息,将 相同服务等级信息、 且相同标签信息的数据包分成一类, 将被分成同一类的 数据包映射进同一无源光网络的业务传输通道。 也就是, 相同 CoS、 且相同标 签的数据包分成一类, 被映射到同一个 GEM P0RT/LLID。
例如, 如图 10 ( a )和( b )所示, 在图 10 ( a ) 中, 0LT在用户 1 1对应 MPLS标签 101、用户 12对应 MPLS标签 1 02的情况下,将 CoSl、 MPLS标签 1 01 的数据包映射到 GEM P0RT11传输, 将 CoS2、 MPLS标签 101的数据包映射到 GEM P0RT12传输, ... ..., 将 CoS2、 MPLS标签 102的数据包映射到 GEM P0RT15 传输。 在图 1 0 ( b ) 中, 0LT在用户 11对应 CoSl、 用户 12对应 CoS2的情况 下, 将 CoS l、 MPLS标签 101的数据包映射到 GEM P0RT11传输, 将 CoSl、 MPLS 标签 102的数据包映射到 GEM P0RT12传输, ... ..., 将 CoS2、 MPLS标签 102 的数据包映射到 GEM P0RT15传输。
B、 0LT根据 PSN隧道信息中或 PW信息中的标签信息, 将相同标签信息的 数据包分成一类, 将被分成同一类的数据包映射进同一无源光网络的业务传 输通道。 也就是, 相同标签的所有 CoS 的数据包分成一类, 被映射到同一个 GEM P0RT/LLID。
例如, 如图 10 ( c )和(d )所示, 在图 10 ( c ) 中, 0LT在用户 11对应 MPLS标签 101、 用户 12对应 MPLS标签 102的情况下, 将 MPLS标签 101的所 有 CoS ( CoSl和 CoS2和 CoS3 ) 的数据包映射到 GEM PORTl l传输, 将 MPLS标 签 102的所有 CoS ( CoSl和 CoS2 ) 的数据包映射到 GEM P0RT12传输。 在图 10 ( d ) 中, 0LT在用户 11对应 CoSl、 用户 12对应 CoS2的情况下, 将 MPLS 标签 101的所有 CoS ( CoSl和 CoS2 ) 的数据包映射到 GEM P0RT12传输, 将 MPLS标签 102的所有 CoS ( CoSl和 CoS2 ) 的数据包映射到 GEM P0RT13传输, 将 MPLS标签 103的所有 CoS ( CoSl ) 的数据包映射到 GEM PORTl l传输。
C、 0LT根据 PSN隧道信息中或 PW信息中的服务等级信息, 将相同服务等 级信息的数据包分成一类, 将被分成同一类的数据包映射进同一无源光网络 的业务传输通道。 也就是, 相同 CoS 的所有标签的数据包分成一类, 被映射 到同一个 GEM P0RT/LLID。
例如, 如图 10 ( e )和( f )所示, 在图 10 ( e ) 中, 0LT在用户 11对应 MPLS标签 101、 用户 12对应 MPLS标签 102的情况下, 将 CoSl的所有 MPLS 标签(标签 101和标签 102 )的数据包映射到 GEM P0RT12传输, 将 CoS2的所 有 MPLS标签(标签 101和标签 102 ) 的数据包映射到 GEM P0RT13传输, 将 CoS3的所有 MPLS标签(标签 101 ) 的数据包映射到 GEM PORTl l传输。 在图 10 ( f ) 中, 0LT在用户 11对应 CoSl、 用户 12对应 CoS2的情况下, 将 CoSl 的所有 MPLS标签(标签 101和标签 102和标签 103 )的数据包映射到 GEM PORTl l 传输, 将 CoS2的所有 MPLS标签(标签 101和标签 102 )的数据包映射到 GEM PORT 12传输。 本发明实施例中 0LT还可进一步根据 PSN隧道信息中或 PW信息中的服务 等级信息和 /或标签信息, 将所述数据包分类, 并将同一类的数据包映射进同 一 P0N的业务传输通道。 PSN隧道信息中或 PW信息中的服务等级信息和 /或标 签信息更详细地标识了数据包对传输的 QoS要求, 根据 PSN隧道信息中或 PW 信息中的服务等级信息和 /或标签信息进行分类映射, 进一步实现以保证数据 传输的 QoS为前提, 进行 P0N的业务传输通道与 PW和 /或 PSN隧道的映射。
为了使 P0N的业务传输通道与 PW和 /或 PSN隧道映射后, 数据传输得到 QoS 保证, 本发明实施例提供一种数据传输的映射装置。 如图 5 所示, 本发 明实施例数据传输的映射装置, 包括:
服务质量映射单元 503 ,用于根据多协议标签交换隧道信息对所述数据包 进行分类, 将所述分类后的数据包分别映射到不同的无源光网络的业务传输 通道;
所述 MPLS隧道信息包括 PSN隧道信息和 /或 PW信息; 所述 PSN隧道信息 包括自身属性信息; 所述 PW信息包括自身属性信息。 所述 PSN隧道信息中和 /或 PW信息中的自身属性信息包括能区分不同 PSN隧道信息和 /或 PW信息的 属性标识。
服务质量映射单元 503根据 PSN隧道信息中和 /或 PW信息中的自身属性 信息, 对所述数据包进行分类, 将所述分类后的数据包分别映射到不同的无 源光网络的业务传输通道。
进一步地, PSN 隧道信息还包括: 服务等级信息和标签信息; PW信息还 包括: 服务等级信息和标签信息。 服务质量映射单元 503根据 PSN隧道信息 中或 PW信息中的服务等级信息和 /或标签信息, 将所述数据包分别映射到不 同的无源光网络的业务传输通道。
本发明实施例数据传输的映射装置进行分类映射前, 还需要接收数据包、 获取数据包的多协议标签交换隧道信息; 进行分类映射后, 还需要发送数据 包。 为此, 本发明实施例数据传输的映射装置, 进一步还包括: 业务接口单元 501 , 用于接收业务流, 该业务流包括至少两个数据包; 隧道信息单元 502 , 用于获取所述数据包的多协议标签交换隧道信息; 所 述多协议标签交换隧道信息包括分组交换网络隧道信息中和 /或伪线信息中 的自身属性信息、 服务等级信息和 /或标签信息;
无源光网络发送单元 504 ,用于通过数据包映射到的业务传输通道发送数 据包;
本发明实施例中, 服务质量映射单元 503根据多协议标签交换隧道信息, 将数据包分别映射到不同的无源光网络的业务传输通道, 实现以保证数据传 输的 QoS为前提, 进行 P0N的业务传输通道与 PW和 /或 PSN隧道的映射。 数 据传输的映射装置包括光线路终端或光网络单元。 下面分别以光线路终端、 光网络单元为例介绍数据传输的映射装置的一个具体实施方式。
如图 6所示, 本发明实施例数据传输的光线路终端, 包括:
服务质量映射单元 603 ,用于根据多协议标签交换隧道信息对所述数据包 进行分类, 将所述分类后的数据包分别映射到不同的无源光网络的业务传输 通道;
所述 MPLS隧道信息包括 PSN隧道信息和 /或 PW信息; 所述 PSN隧道信息 包括自身属性信息; 所述 PW信息包括自身属性信息。 所述 PSN隧道信息中和 /或 PW信息中的自身属性信息包括能区分不同 PSN隧道信息和 /或 PW信息的 属性标识。
服务质量映射单元 603根据 PSN隧道信息中和 /或 PW信息中的自身属性 信息, 对所述数据包进行分类, 将所述分类后的数据包分别映射到不同的无 源光网络的业务传输通道, 包括:
1、 服务质量映射单元 603根据 PSN隧道信息中和 PW信息中的自身属性 信息, 将相同 PSN隧道信息中的自身属性信息、 且相同 PW信息中的自身属性 信息的数据包分成一类, 将被分成同一类的数据包映射进同一无源光网络的 业务传输通道。 也就是, 相同 PSN隧道、 且相同 PW的数据包分成一类, 被映 射到同一个 GEM P0RT/LL ID。
2、 服务质量映射单元 603根据 PSN隧道信息中的自身属性信息, 将相同 PSN隧道信息中的自身属性信息的数据包分成一类,将被分成同一类的数据包 映射进同一无源光网络的业务传输通道。 也就是, 相同 PSN隧道的所有 PW的 数据包分成一类, 被映射到同一个 GEM P0RT/LL ID。
本发明实施例中服务质量映射单元 603根据 PSN隧道信息中和 /或 PW信 息中的自身属性信息, 将所述数据包分类, 并将同一类的数据包映射进同一 P0N的业务传输通道。 不同的 PW和 /或 PSN隧道为数据传输提供不同的 QoS , 根据 PSN隧道信息中和 /或 PW信息中的自身属性信息进行分类映射, 实现以 保证数据传输的 QoS为前提, 进行 P0N的业务传输通道与 PW和 /或 PSN隧道 的映射。
进一步地, PSN 隧道信息还包括: 服务等级信息和标签信息; PW信息还 包括: 服务等级信息和标签信息。 服务质量映射单元 603还可以根据 PSN隧 道信息中或 PW信息中的服务等级信息和 /或标签信息, 对所述数据包进行分 类, 将所述分类后的数据包分别映射到不同的无源光网络的业务传输通道, 包括:
A、 服务质量映射单元 603根据 PSN隧道信息中或 PW信息中的服务等级 信息和标签信息, 将相同服务等级信息、 且相同标签信息的数据包分成一类, 将被分成同一类的数据包映射进同一无源光网络的业务传输通道。 也就是, 相同 CoS、 且相同标签的数据包分成一类, 被映射到同一个 GEM P0RT/LL I D。
B、 服务质量映射单元 603根据 PSN隧道信息中或 PW信息中的标签信息, 将相同标签信息的数据包分成一类, 将被分成同一类的数据包映射进同一无 源光网络的业务传输通道。 也就是, 相同标签的所有 CoS的数据包分成一类, 被映射到同一个 GEM P0RT/LL ID。
C、 服务质量映射单元 603根据 PSN隧道信息中或 PW信息中的服务等级 信息, 将相同服务等级信息的数据包分成一类, 将被分成同一类的数据包映 射进同一无源光网络的业务传输通道。 也就是, 相同 CoS 的所有标签的数据 包分成一类, 被映射到同一个 GEM P0RT/LL ID。
本发明实施例中服务质量映射单元 603还可进一步根据 PSN隧道信息中 或 PW信息中的服务等级信息和 /或标签信息, 将所述数据包分类, 并将同一 类的数据包映射进同一 P0N的业务传输通道。 PSN隧道信息中或 PW信息中的 服务等级信息和 /或标签信息更详细地标识了数据包对传输的 QoS要求, 根据 PSN隧道信息中或 PW信息中的服务等级信息和 /或标签信息进行分类映射,进 一步实现以保证数据传输的 QoS为前提, 进行 P0N的业务传输通道与 PW和 / 或 PSN隧道的映射。
本发明实施例数据传输的光线路终端进行分类映射前, 还需要接收数据 包、 获取数据包的多协议标签交换隧道信息; 进行分类映射后, 还需要发送 数据包。 为此, 本发明实施例数据传输的光线路终端, 进一步还包括:
业务接口单元 601 , 用于接收业务流, 该业务流包括至少两个数据包; 隧道信息单元 602 , 用于交换所述数据包携带的多协议标签交换隧道信 息; 所述多协议标签交换隧道信息包括分组交换网络隧道信息中和 /或伪线信 息中的自身属性信息、 服务等级信息和 /或标签信息;
无源光网络发送单元 604 ,用于通过数据包映射到的业务传输通道发送数 据包。
本发明实施例中, 服务质量映射单元 603 只在下行方向, 对数据包进行 分类映射。 下面详细介绍 0LT对下行数据的转发流程。 0LT对下行数据的转发 流程, 包括:
业务接口单元 601接收网络侧的业务流, 该业务流包括至少两个数据包; 隧道信息单元 602 交换所述数据包携带的多协议标签交换隧道信息; 服务质 量映射单元 603根据隧道信息单元 602处理后的 MPLS隧道信息, 按照前面所 述的方法将所述数据包分别映射到不同的无源光网络的 GEM P0RT/LL ID; 无源 光网络发送单元 604通过数据包映射到的 GEM P0RT/LL ID发送数据包。 如图 7所示, 本发明实施例数据传输的光网络单元, 包括: 服务质量映射单元 703 ,用于根据多协议标签交换隧道信息对所述数据包 进行分类, 将所述分类后的数据包分别映射到不同的无源光网络的业务传输 通道;
所述 MPLS隧道信息包括 PSN隧道信息和 /或 PW信息; 所述 PSN隧道信息 包括自身属性信息; 所述 PW信息包括自身属性信息。 所述 PSN隧道信息中和 /或 PW信息中的自身属性信息包括能区分不同 PSN隧道信息和 /或 PW信息的 属性标识。
服务质量映射单元 703根据 PSN隧道信息中和 /或 PW信息中的自身属性 信息, 对所述数据包进行分类, 将所述分类后的数据包分别映射到不同的无 源光网络的业务传输通道, 包括:
1、 服务质量映射单元 703根据 PSN隧道信息中和 PW信息中的自身属性 信息, 将相同 PSN隧道信息中的自身属性信息、 且相同 PW信息中的自身属性 信息的数据包分成一类, 将被分成同一类的数据包映射进同一无源光网络的 业务传输通道。 也就是, 相同 PSN隧道、 且相同 PW的数据包分成一类, 被映 射到同一个 GEM P0RT/LL ID。
2、 服务质量映射单元 703根据 PSN隧道信息中的自身属性信息, 将相同 PSN隧道信息中的自身属性信息的数据包分成一类,将被分成同一类的数据包 映射进同一无源光网络的业务传输通道。 也就是, 相同 PSN隧道的所有 PW的 数据包分成一类, 被映射到同一个 GEM P0RT/LL ID。
本发明实施例中服务质量映射单元 703根据 PSN隧道信息中和 /或 PW信 息中的自身属性信息, 将所述数据包分类, 并将同一类的数据包映射进同一 P0N的业务传输通道。 不同的 PW和 /或 PSN隧道为数据传输提供不同的 QoS , 根据 PSN隧道信息中和 /或 PW信息中的自身属性信息进行分类映射, 实现以 保证数据传输的 QoS为前提, 进行 P0N的业务传输通道与 PW和 /或 PSN隧道 的映射。 进一步地, PSN 隧道信息还包括: 服务等级信息和标签信息; PW信息还 包括: 服务等级信息和标签信息。 服务质量映射单元 703还可以根据 PSN隧 道信息中或 PW信息中的服务等级信息和 /或标签信息, 对所述数据包进行分 类, 将所述分类后的数据包分别映射到不同的无源光网络的业务传输通道, 包括:
A、 服务质量映射单元 703根据 PSN隧道信息中或 PW信息中的服务等级 信息和标签信息, 将相同服务等级信息、 且相同标签信息的数据包分成一类, 将被分成同一类的数据包映射进同一无源光网络的业务传输通道。 也就是, 相同 CoS、 且相同标签的数据包分成一类, 被映射到同一个 GEM P0RT/LL I D。
B、 服务质量映射单元 703根据 PSN隧道信息中或 PW信息中的标签信息, 将相同标签信息的数据包分成一类, 将被分成同一类的数据包映射进同一无 源光网络的业务传输通道。 也就是, 相同标签的所有 CoS的数据包分成一类, 被映射到同一个 GEM P0RT/LL ID。
C、 服务质量映射单元 703根据 PSN隧道信息中或 PW信息中的服务等级 信息, 将相同服务等级信息的数据包分成一类, 将被分成同一类的数据包映 射进同一无源光网络的业务传输通道。 也就是, 相同 CoS 的所有标签的数据 包分成一类, 被映射到同一个 GEM P0RT/LL ID。
进一步, 当 P0N为 GP0N时, 服务质量映射单元 703还需将 GEM PORT按 以下几种方式中的一种映射到 T-C0NT中:
1、 不同的 GEM PORT , 按 1: 1的关系映射进不同的 T-C0NT;
2、 不同的 GEM PORT , 按 N: 1的关系映射进不同的 T-C0NT;
3、 服务质量映射单元 703根据 PSN隧道信息中或 PW信息中的服务等级 信息, 将相同服务等级信息的 GEM PORT映射进相同的 T-C0NT。
本发明实施例中服务质量映射单元 703还可进一步根据 PSN隧道信息中 或 PW信息中的服务等级信息和 /或标签信息, 将所述数据包分类, 并将同一 类的数据包映射进同一 P0N的业务传输通道。 PSN隧道信息中或 PW信息中的 服务等级信息和 /或标签信息更详细地标识了数据包对传输的 QoS要求, 根据 PSN隧道信息中或 PW信息中的服务等级信息和 /或标签信息进行分类映射,进 一步实现以保证数据传输的 QoS为前提, 进行 P0N的业务传输通道与 PW和 / 或 PSN隧道的映射。
本发明实施例数据传输的光网络单元进行分类映射前, 还需要接收数据 包、 获取数据包的多协议标签交换隧道信息; 进行分类映射后, 还需要发送 数据包。 为此, 本发明实施例数据传输的光网络单元, 进一步还包括:
业务接口单元 701 , 用于接收业务流, 该业务流包括至少两个数据包; 隧道信息单元 702 , 用于为所述数据包添加多协议标签交换隧道信息; 所 述多协议标签交换隧道信息包括分组交换网络隧道信息中和 /或伪线信息中 的自身属性信息、 服务等级信息和 /或标签信息;
无源光网络发送单元 704 ,用于通过数据包映射到的业务传输通道发送数 据包。
本发明实施例中, 服务质量映射单元 703 只在上行方向, 对数据包进行 分类映射。 下面详细介绍 0NU对上行数据的转发流程。 0NU对上行数据的转发 流程, 包括:
业务接口单元 701接收用户侧的业务流, 该业务流包括至少两个数据包; 隧道信息单元 702 为所述数据包添加多协议标签交换隧道信息; 服务质量映 射单元 703根据隧道信息单元 702处理后的 MPLS隧道信息, 按照前面所述的 方法将所述数据包分别映射到不同的无源光网络的 GEM P0RT/LL ID; 无源光网 络发送单元 704通过数据包映射到的 GEM P0RT/LL ID发送数据包。
为了使 P0N的业务传输通道与 PW和 /或 PSN隧道映射后, 数据传输得到 QoS 保证, 本发明实施例提供一种数据传输的映射系统。 如图 8 所示, 本发 明实施例数据传输的映射系统, 包括光网络单元 801和光线路终端 802 , 所述 光网络单元 801和光线路终端 802具有至少一条业务传输通道;
其中光网络单元 801 接收到包括至少两个数据包的业务流后, 获取所述 数据包的多协议标签交换隧道信息; 根据多协议标签交换隧道信息对所述数 据包进行分类, 将所述分类后的数据包分别映射到不同的无源光网络的业务 传输通道后发送给光线路终端 802 ;
或者光线路终端 802接收到包括至少两个数据包的业务流后, 获取所述 数据包的多协议标签交换隧道信息; 根据多协议标签交换隧道信息对所述数 据包进行分类, 将所述分类后的数据包分别映射到不同的无源光网络的业务 传输通道后发送给光网络单元 801 ;
所述多协议标签交换隧道信息包括分组交换网络隧道信息中和 /或伪线 信息中的自身属性信息、 服务等级信息和 /或标签信息。
本领域普通技术人员可以理解实现上述实施例方法中的全部或部分流 程, 是可以通过计算机程序来指令相关的硬件来完成, 所述的程序可存储于 一计算机可读取存储介质中, 该程序在执行时, 可包括如上述各方法的实施 例的流程。其中,所述的存储介质可为磁碟、光盘、只读存储记忆体( Read-Onl y Memory, ROM )或随机存储记忆体 ( Random Acces s Memory, RAM )等。
以上所述, 仅为本发明的具体实施方式, 但本发明的保护范围并不局限 于此, 任何熟悉本技术领域的技术人员在本发明揭露的技术范围内, 可轻易 想到变化或替换, 都应涵盖在本发明的保护范围之内。 因此, 本发明的保护 范围应所述以权利要求的保护范围为准

Claims

权 利 要求 书
1、 一种数据传输的映射方法, 其特征在于, 包括:
接收业务流, 该业务流包括至少两个数据包;
获取所述数据包的多协议标签交换隧道信息; 所述多协议标签交换隧道信 息包括分组交换网络隧道信息中和 /或伪线信息中的自身属性信息、 服务等级信 息和 /或标签信息;
根据多协议标签交换隧道信息对所述数据包进行分类, 将所述分类后的数 据包分别映射到不同的无源光网络的业务传输通道。
2、 根据权利要求 1所述的数据传输的映射方法, 其特征在于, 所述分组交 换网络隧道信息中和 /或伪线信息中的自身属性信息包括能区分不同分组交换 网络隧道和 /或伪线的属性标识。
3、 根据权利要求 1所述的数据传输的映射方法, 其特征在于, 当所述多协 议标签交换隧道信息为分组交换网络隧道信息中和伪线信息中的自身属性信息 时, 所述根据多协议标签交换隧道信息对所述数据包进行分类包括:
根据分组交换网络隧道信息中和伪线信息中的自身属性信息, 将相同分组 交换网络隧道信息中的自身属性信息且相同伪线信息中的自身属性信息的数据 包分成一类。
4、 根据权利要求 1所述的数据传输的映射方法, 其特征在于, 当所述多协 议标签交换隧道信息为分组交换网络隧道信息中的自身属性信息时, 所述根据 多协议标签交换隧道信息对所述数据包进行分类包括:
根据分组交换网络隧道信息中的自身属性信息, 将相同分组交换网络隧道 信息中的自身属性信息的数据包分成一类。
5、 根据权利要求 1所述的数据传输的映射方法, 其特征在于, 当所述多协 议标签交换隧道信息为分组交换网络隧道信息中或伪线信息中的服务等级信息 和标签信息时, 所述根据多协议标签交换隧道信息对所述数据包进行分类包括: 根据分组交换网络隧道信息中或伪线信息中的服务等级信息和标签信息, 将相同服务等级信息且相同标签信息的数据包分成一类。
6、 根据权利要求 1所述的数据传输的映射方法, 其特征在于, 当所述多协 议标签交换隧道信息为分组交换网络隧道信息中或伪线信息中的服务等级信息 时, 所述根据多协议标签交换隧道信息对所述数据包进行分类包括:
根据分组交换网络隧道信息中或伪线信息中的服务等级信息, 将相同服务 等级信息的数据包分成一类。
7、 根据权利要求 1所述的数据传输的映射方法, 其特征在于, 当所述多协 议标签交换隧道信息为分组交换网络隧道信息中或伪线信息中的标签信息时, 所述根据多协议标签交换隧道信息对所述数据包进行分类包括:
根据分组交换网络隧道信息中或伪线信息中的标签信息, 将相同标签信息 的数据包分成一类。
8、 一种数据传输的映射装置, 其特征在于, 包括:
业务接口单元(501 ), 用于接收业务流, 该业务流包括至少两个数据包; 隧道信息单元( 502 ), 用于获取所述数据包的多协议标签交换隧道信息; 所述多协议标签交换隧道信息包括分组交换网络隧道信息中和 /或伪线信息中 的自身属性信息、 服务等级信息和 /或标签信息;
服务质量映射单元( 503 ), 用于根据多协议标签交换隧道信息对所述数据 包进行分类, 将所述分类后的数据包分别映射到不同的无源光网络的业务传输 通道;
无源光网络发送单元( 504 ), 用于通过数据包映射到的业务传输通道发送 数据包。
9、 根据权利要求 8所述的数据传输的映射装置, 其特征在于, 所述装置为 光网络单元或光线路终端。
10、 一种数据传输的映射系统, 其特征在于, 包括光网络单元(801 )和光 线路终端 ( 802 ), 所述光网络单元(801 )和光线路终端 ( 802 ) 具有至少一条 业务传输通道; 其中光网络单元(801 )接收到包括至少两个数据包的业务流后, 获取所述 数据包的多协议标签交换隧道信息; 根据多协议标签交换隧道信息对所述数据 包进行分类, 将所述分类后的数据包分别映射到不同的无源光网络的业务传输 通道后发送给光线路终端 ( 802 );
或者光线路终端 ( 802 )接收到包括至少两个数据包的业务流后, 获取所述 数据包的多协议标签交换隧道信息; 根据多协议标签交换隧道信息对所述数据 包进行分类, 将所述分类后的数据包分别映射到不同的无源光网络的业务传输 通道后发送给光网络单元( 801 );
所述多协议标签交换隧道信息包括分组交换网络隧道信息中和 /或伪线信 息中的自身属性信息、 服务等级信息和 /或标签信息。
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