CN1889582B - Method for sorting MPLS business stream in a wireless access network based on 802.16 standard - Google Patents
Method for sorting MPLS business stream in a wireless access network based on 802.16 standard Download PDFInfo
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Abstract
A method for classifying MPLS service stream includes defining identification rule of MPLS service stream, mapping MPLS countermark of MPLS service stream to be CID by utilizing defined identificationrule and carrying out classification on MPLS service stream according to CID.
Description
Technical field
The present invention relates to communication field, relate in particular to a kind of method of in based on the Radio Access Network of 802.16 standards, MPLS (Multiprotoco Label Switching, multiprotocol label switching) Business Stream being classified.
Background technology
The broadband access method that broadband wireless access BWA (Broadband wireless access, broadband wireless access) equipment can be provided convenience for the user.Broadband wireless access equipment based on proprietary protocol is arranged at present, the broadband wireless access equipment based on standard agreement is also arranged.The broadband wireless access equipment of IEEE (IEEE) 802.16 standard definitions is subclass of the series standard of wireless access wide band technology.Comprise WIMAX (global interactive inserting of microwave) equipment in the BWA equipment based on IEEE 802.16 standards.
WiMAX is a kind of metropolitan area network WiMAX access technology, and it has wide coverage, provides data tape roomy advantage with respect to existing WiFi (Wireless Fidelity alliance organization) and 3G (third generation communication system) technology.So the WiMAX technology is more suitable for providing in the metropolitan area network scope business of WiMAX access.
The business that WiMAX can provide comprises: for local customer/family provides the Broadband Internet access service; For medium-sized and small enterprises provide broadband access and VPN (Virtual Private Network) business; For providing Backhaul (return network), enterprise/WiFi HotSpot (WiFi focus)/far-end broadband access equipment inserts the business of metropolitan area network; For family/personal user provides nomadic/mobile business that inserts.
In IEEE 802.16 broadband wireless access standards, PHY (physical layer equipment) layer and MAC (medium access control) layer have been defined.Wherein the MAC layer is divided into CS (service identification Convergence Sublayer) sublayer, CPS (common part sublayer) sublayer and Security Sublayer (Security Sublayer) sublayer again.In the CS layer, this standard definition at the ATM CS of ATM (asynchronous transfer mode) with at the Packet CS (bag Convergence Sublayer) of bag (Ethernet or IP network packet).
802.16 the Packet CS sublayer of definition, the function of mainly finishing is: upper-layer protocol data flow (Ethernet or IP network packet) is carried out traffic classification, finish the mapping that flows to CID (connection identifier).802.16 defined comprehensive and complicated traffic classification related protocol territory, having comprised: MAC destination address, mac source address, 802.1p, VLAN (VLAN) ID, ethernet type, IP destination address, IP source address, IP protocol type, UDP/TCP (User Datagram Protoco (UDP)/transmission control protocol) destination interface, UDP/TCP source port, IP DSCP territory.802.16 regulation can by accurately, press mask, press the commensurate in scope flow classification rule.
The MPLS technology was mainly used in the core net in the past, because it is in the superiority of aspects such as vpn service carrying, network scalability, OAM (operation and maintenance), traffic engineering, MPLS is progressively approved in the scope of metropolitan area network and uses.Particularly, along with the release of IETF PWE3 (emulation of edge-to-edge virtual circuit) standard, the MPLS technology has been applied on the DSLAM (Digital Subscriber Line Access Multiplexer) at present, and circuit emulation and vpn service mainly are provided.Can solve the problem of multiple business circuit emulation, network scalability, network maintainability preferably.
In the Packet CS of 802.16 present standards definition, only defined: the flow classification rule of the message of IPv4, IPv6,802.3/Ethernet (Ethernet), 802.1Q VLAN, IPv4 over 802.3/Ethernet, IPv6 over 802.3/Ethernet, IPv4 over 802.1Q VLAN, IPv6 over 802.1QVLAN type does not define the flow classification rule of the message of MPLS (multiprotocol label switching) type.Therefore, from the application scenario that bandwidth inserts, the CS layer that defines in 802.16 standards is not comprehensive, and the message of MPLS type can not obtain corresponding suitable service in based on the Radio Access Network of 802.16 standards.
Summary of the invention
In view of above-mentioned existing in prior technology problem, the purpose of this invention is to provide a kind of method that multi-protocol tag exchange business stream is classified, thereby can in Radio Access Network, classify multi-protocol tag exchange business stream based on 802.16 standards.
A kind of method of in based on the Radio Access Network of 802.16 standards the MPLS Business Stream being classified comprises:
A, in the parameter of the Convergence Sublayer CS sublayer of 802.16 standards administrative messag, increase to support the CS parameter of MPLS encapsulated message to be provided with, in CS message classification parameter of regularity, increase the definition that mpls experimental uses position EXP and two parameters of MPLS tag number Label_ID, according to the recognition rule of described MPLS EXP and MPLSLabel_ID parameter-definition MPLS Business Stream, the MPLS Business Stream is discerned;
B, utilize the recognition rule of the MPLS Business Stream of described definition, Label_ID value in the MPLS label of MPLS Business Stream is mapped as the CID value, and the MPLS Business Stream is classified according to this CID value;
Perhaps,
Utilize the stream recognition rule of described definition, EXP value in the MPLS label of MPLS Business Stream is mapped as the CID value, and the MPLS Business Stream is classified according to this CID value;
Perhaps,
Utilize the stream recognition rule of described definition, Label_ID value+EXP value in the MPLS label of MPLS Business Stream is mapped as the CID value, and the MPLS Business Stream is classified according to this CID value.
Described MPLS EXP parameter comprises type, length and three fields of value, this parameter is discerned Business Stream according to the EXP of MPLS Business Stream, MPLS Label_ID parameter comprises type, length and three fields of value, and this parameter is discerned Business Stream according to the Label_ID of MPLS Business Stream.
The highest 20bits is an active data in the value field of described MPLS Label_ID parameter, need compare when identification services flows.
The described CS parameter of supporting the MPLS encapsulated message that increases in the parameter of the Convergence Sublayer CS sublayer of 802.16 standards administrative messag is provided with, and specifically comprises:
In register requirement/response REG-REQ/RSP administrative messag that the base station sends, increase the data cell encapsulation format that be carried on MPLS message 802.3/ ethernet format on and be carried on 802.1Q VLAN stylistic MPLS message in the Service Data Unit encapsulation support parameter in the Convergence Sublayer ability parameter at subscriber station;
Increase the definition that is carried on the MPLS message on 802.3/ ethernet format and is carried on the stylistic MPLS message of 802.1Q VLAN in the Convergence Sublayer explanation parameter in dynamic service interpolation/dynamic service modification DSA-x/DSC-x administrative messag;
Increase the definition that is carried on the MPLS message on 802.3/ ethernet format and is carried on the coding of the stylistic MPLS message of 802.1Q VLAN in the Convergence Sublayer parameter coding rule in the DSA-x/DSC-x administrative messag.
Described Radio Access Network based on 802.16 standards comprises global interactive inserting of microwave WIMAX network.
As seen from the above technical solution provided by the invention, the present invention is by the CS sublayer of expansion 802.16 standards, and according to the mapping ruler that defines, realization MPLS label is to the mapping of CID.Thereby can in based on the Radio Access Network of 802.16 standards, classify, make the MPLS Business Stream in Radio Access Network, obtain corresponding suitable service based on 802.16 standards to the MPLS Business Stream.
Description of drawings
Fig. 1 is the schematic diagram that employing WiMAX technology of the present invention realizes the Backhaul business of far-end DSLAM;
Fig. 2 is the form schematic diagram of the MPLS data message that equipment 3 receives in the example network of the present invention;
Fig. 3 is the form schematic diagram of MPLS label.
Embodiment
The invention provides a kind of method that multi-protocol tag exchange business stream is classified.Core of the present invention is: increase the CS parameter of supporting the MPLS encapsulated message and be provided with in the parameter of the CS sublayer of 802.16 standards administrative messag, realize the mapping of MPLS label to CID by the rule that defines, finish the traffic classification function to the MPLS message.
Describe the present invention in detail below in conjunction with accompanying drawing, realize in the schematic diagram of Backhaul business of far-end DSLAM in employing WiMAX technology shown in Figure 1.Equipment 1 is the broadband access equipment of a far-end, can be the DSLAM or the MSAN (multiple service access network network node) of a middle and small scale, by XDSL/LAN/POTS even the final guard station of WiMAx network insertion, enterprise or VPN user.Equipment 1 is connected to equipment 2 by the WiMAX network.Equipment 2 can be one and converge Ethernet switch, router or a large-scale DSLAM equipment, this equipment with service convergence to the IP metropolitan area network.
On equipment 1, can provide MPLS business such as MPLS PWE3 or L2VPN for the user as remote access device.As the equipment 3 and the equipment 4 of WiMAX Backhaul equipment, the MPLS data flow that needs carrying and these equipment 1 of transparent transmission to pass over.On the interface 5 of equipment 3 and equipment 1, the form of the MPLS data message that equipment 3 receives as shown in Figure 2.
The encapsulation format of having represented two kinds of messages of MPLS over 802.3/Ethernet (being carried on the MPLS message on 802.3/ ethernet format), MPLS over 802.1Q VLAN (being carried on the stylistic MPLS message of 802.1Q VLAN) among Fig. 2, wherein the label of MPLS has 1 layer or multilayer, only represented two-layer among Fig. 2, be respectively Outer Label (outer layer label) and Inner Label (vpn label), Outer Label is the outermost label of message.Fig. 3 has represented the form of MPLS label.
The MPLS data flow is distinguished by the MPLS label, and the label of MPLS has multilayer, but WiMAX equipment is as the equipment of transparent transmission MPLS business, the MPLS label stack that can not terminate, and promptly WiMAX equipment only is concerned about outermost Outer Label label.
When realizing transparent transmission MPLS business function, equipment 3 need be mapped to corresponding C ID value with Label ID (label) among the Outer Label of MPLS data flow and EXP (position is used in experiment) value, distinguish different MPLS data flow according to this CID value then, and provide corresponding QOS to guarantee mechanism respectively.
In former 802.16 standard, and undefined MPLS data flow to the mapping relations and the method for CID value.The present invention expands the MAC CS sublayer of 802.16 standard, has defined the mapping ruler that the MPLS data flow to the CID value in this sublayer, and the mapping ruler of definition comprises 3 kinds, as follows respectively:
The rule 1, according to the definition mapping method, with the message of Label ID (20bit)=n among the MPLS Outer Label, be mapped as the stream of CID (16bit)=m.
Rule 2, according to the mapping method of definition, (message of n1＜=EXP (3bit)＜=n2) is mapped as the stream of CID (16bit)=m with the EXP value of certain scope among the MPLS Outer Label.
Rule 3, according to the mapping method of definition, rule 1 and regular 2 is made up, the MPLS data flow is mapped to the CID of appointment.
The difference of the flow amount of Shi Xianing as required, concrete mapping method has a variety of.Such as, can be following several mapping methods:
1, adopts RAM of Label ID linear search, obtain CID corresponding to this Label.After perhaps adopting Label ID (20bits) to carry out Hash calculating, obtain an index value, search Hash bucket or chained list again, obtain CID corresponding to this Label.
2, adopt RAM of EXP linear search, obtain CID corresponding to this EXP.
3, after employing Label ID (20bits)+EXP (3bits) carries out Hash calculating, obtain an index value, search Hash bucket or chained list again, obtain CID corresponding to this Label+EXP.
4, adopt the special device of searching,, obtain corresponding C ID as CAM (access to content memory).
In realization of the present invention, the method for definition flow classification rule can be the manual static setting; Also can be by the administrative messag of expansion DSA-x/DSC-x (modification of dynamic service interpolation/dynamic service), when dynamically connecting, carry out corresponding flow classification rule setting.The DSA-x/DSC-x administrative messag is the administrative messag in 802.16 the MAC CS sublayer.
For keeping backwards-compatible to former 802.16 standards, the present invention adopts the reservation coding in the primary standard and keeps the function that the position defines the relevant CS sublayer of MPLS.Realization is to the expansion of 802.16MAC CS sublayer.
If adopt the method for Dynamic Definition flow classification rule, then the present invention need expand the definition of CS Specific Service FloW Encodings (stream encryption of Convergence Sublayer identification services) parameter in the administrative messag of DSA-x/DSC-x.The effect of this parameter is that Dynamic Definition is discerned the rule of this stream at certain concrete stream.The reservation coding of the method for expansion in can the employing standard expanded, and the producer's custom parameter that defines in also can the employing standard is expanded.Keeping encodes expands if adopt, and the detailed process of expansion is as follows:
1, at first needs to expand REG-REQ/RSP (register requirement/response) administrative messag that SS sends to BS.This administrative messag sends when BS registers at SS, is used for stating the ability that it supports the CS sublayer to BS.
Concrete expansion process is as follows:
SDU Encapsulation Support in the expansion REG-REQ/RSP administrative messag in Convergence Sublayer Capabilities (Convergence Sublayer ability) parameter (the Service Data Unit encapsulation is supported) parameter-definition, adopt to keep the SDU encapsulation that bit expansion SS supports, in Packet CS, increase the SDU encapsulation format of MPLS over 802.3/Ethernet, MPLS over 802.1Q VLAN.As shown in table 1.
Table 1: the SDU Encapsulation Support argument structure schematic diagram after the expansion
| Type | Length | Value | Scope |
| 7 | 2 | Bit#0：ATM Bit#1：PacketIPv4 Bit#2：PacketIPv6 Bit#3：Packet 802.3/Ethernet Bit#4：Packet 802.1Q VLAN Bit#5：Packet IPv4over 802.3/Ethernet Bit#6：Packet IPv6over 802.3/Ethernet Bit#7：Packet IPv4over 802.1Q VLAN Bit#8：Packet IPv6over 802.1Q VLAN Bit#9：Packet MPLS over 802.3/Ethernet(Extended) Bit#10：Packet MPLS over 802.1Q VLAN(Extended) Bit#11～15：Reserved；shall be set to zero | REG-REQ REG-RSP |
2, expansion CS Specification (Convergence Sublayer explanation) parameter, the structural representation of this parameter after the expansion is as shown in table 2.
Table 2: the structural representation of the CS Specification parameter after the expansion
| Type | Length | Value | Scope |
| [145/146].2 8 | 1 | 0：No CS 1：Packet IPv4 2：Packet IPv6 3：Packet 802.3/Ethernet 4：Packet 802.1Q VLAN 5：Packet IPv4 over 802.3/Ethernet | DSA-REQ |
| 6：Packet IPv6over 802.3/Ethernet 7：Packet IPv4over 802.1Q VLAN 8：Packet IPv6over 802.1Q VLAN 9：ATM 10：Packet MPLS over 802.3/Ethernet(Extended) 11：Packet MPLS over 802.1Q VLAN(Extended) 12～255：Reserved |
The effect of CS Specification parameter is that this stream of definition adopts any concrete message encapsulation format in the CS sublayer.Increase in the spreading parameter and defined Packet MPLS over802.3/Ethernet (Extended) (being carried on the MPLS message on 802.3/ ethernet format) and Packet MPLS over 802.1Q VLAN (Extended) (being carried on the stylistic MPLS message of 802.1Q VLAN) form.Therefore, the stream of Qu Fening is Packet MPLS over802.3/Ethernet form if desired, and then the value of this parameter is " 10 ".
3, expansion CS Parameter Encoding Rules (Convergence Sublayer parameter coding rule), the regular schematic diagram of this after the expansion is as shown in table 3.
Table 3: the schematic diagram of the CS Parameter Encoding Rules rule after the expansion
| cst | CS |
| 99 | ATM |
| 100 | Packet IPv4 |
| 101 | Packet IPv6 |
| 102 | Packet 802.3/Ethernet |
| 103 | Packet 802.1Q VLAN |
| 104 | Packet IPv4 over 802.3/Ethernet |
| 105 | Packet IPv6 over 802.3/Ethernet |
| 106 | Packet IPv4 over 802.1Q VLAN |
| 107 | Packet IPv6 over 802.1Q VLAN |
| 108 | Packet MPLS over 802.3/Ethernet(Extended) |
| 109 | Packet MPLS over 802.1Q VLAN(Extended) |
CS Parameter Encoding Rules rule description be Packet Classification Rule (message classification rule) coding that parameter adopted.Such as, as shown in table 2, the message corresponding codes of definition PacketMPLS over 802.3/Ethernet form is 108, so when definition " Packet Classification Rule " parameter, the Type of the message of this form just is expressed as [145/146] .[108] .3.16.
4, expansion Packet Classification Rule parameter increases MPLS EXP and two parameters of MPLSLabel_ID.Its structural representation is as follows respectively:
Table 4, the MPLS EXP argument structure schematic diagram that increases
| Type | Length | Value |
| [145/146].[108/109].3.1 6 | 2 | EXP-low，EXP-high Valid Range：0～7for EXP-low and EXP-high |
Table 5, the MPLS Label_ID argument structure schematic diagram that increases
| Type | Length | Value |
| [145/146].[108/109].3.1 7 | 3 | Label_id1，Label_id2，Label_id3 |
In the MPLS Label_ID argument structure schematic diagram shown in MPLS EXP argument structure schematic diagram shown in the table 4 and the table 5, in the Value value of 3 bytes (24bits), the 20bits that has only Far Left (the highest) is effective MPLS Label_ID value; The 4bits of rightmost (minimum) is invalid, does not compare when coupling.
The effect of Packet Classification Rule parameter is the concrete rule of this stream of definition difference.Such as, if distinguish this stream according to the rule of " EXP is more than or equal to 2, smaller or equal to 5 ", then relevant parameters value: Type, Length, Value are respectively [145/146] .[108] .3.16,2, EXP-low=2, EXP-high=5.
Through the definition of flow classification rule recited above and the expansion of relevant parameter, can classify to the MPLS Business Stream in based on the Radio Access Network of 802.16 standards at WIMAX etc., make the MPLS Business Stream obtain corresponding suitable service.
Above-described expansion does not influence the PHS parameter configuration of CS sublayer, for the message of MPLS over802.3/Ethernet, MPLS over 802.1Q VLAN, equally can adopt the PHS of Packet CS to be provided with, and goes to finish the PHS function.
The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.
Claims (5)
1. a method of in based on the Radio Access Network of 802.16 standards the MPLS Business Stream being classified is characterized in that, comprising:
A, in the parameter of the Convergence Sublayer CS sublayer of 802.16 standards administrative messag, increase to support the CS parameter of MPLS encapsulated message to be provided with, in CS message classification parameter of regularity, increase the definition that mpls experimental uses position EXP and two parameters of MPLS tag number Label_ID, according to the recognition rule of described MPLS EXP and MPLSLabel_ID parameter-definition MPLS Business Stream, the MPLS Business Stream is discerned;
B, utilize the recognition rule of the MPLS Business Stream of described definition, Label_ID value in the MPLS label of MPLS Business Stream is mapped as the CID value, and the MPLS Business Stream is classified according to this CID value;
Perhaps,
Utilize the stream recognition rule of described definition, EXP value in the MPLS label of MPLS Business Stream is mapped as the CID value, and the MPLS Business Stream is classified according to this CID value;
Perhaps,
Utilize the stream recognition rule of described definition, Label_ID value+EXP value in the MPLS label of MPLS Business Stream is mapped as the CID value, and the MPLS Business Stream is classified according to this CID value.
2. according to the described method of in based on the Radio Access Network of 802.16 standards, the MPLS Business Stream being classified of claim 1, it is characterized in that, described MPLS EXP parameter comprises type, length and three fields of value, this parameter is discerned Business Stream according to the EXP of MPLS Business Stream, the MPLSLabel_ID parameter comprises type, length and three fields of value, and this parameter is discerned Business Stream according to the Label_ID of MPLS Business Stream.
3. according to the described method of in based on the Radio Access Network of 802.16 standards, MPLS being classified of claim 2, it is characterized in that, the highest 20bits is an active data in the value field of described MPLS Label_ID parameter, need compare when identification services flows.
4. according to the described method of in based on the Radio Access Network of 802.16 standards, the MPLS Business Stream being classified of claim 1, it is characterized in that, the described CS parameter of supporting the MPLS encapsulated message that increases in the parameter of the Convergence Sublayer CS sublayer of 802.16 standards administrative messag is provided with, and specifically comprises:
In register requirement/response REG-REQ/RSP administrative messag that the base station sends, increase the data cell encapsulation format that be carried on MPLS message 802.3/ ethernet format on and be carried on 802.1Q VLAN stylistic MPLS message in the Service Data Unit encapsulation support parameter in the Convergence Sublayer ability parameter at subscriber station;
Increase the definition that is carried on the MPLS message on 802.3/ ethernet format and is carried on the stylistic MPLS message of 802.1Q VLAN in the Convergence Sublayer explanation parameter in dynamic service interpolation/dynamic service modification DSA-x/DSC-x administrative messag;
Increase the definition that is carried on the MPLS message on 802.3/ ethernet format and is carried on the coding of the stylistic MPLS message of 802.1Q VLAN in the Convergence Sublayer parameter coding rule in the DSA-x/DSC-x administrative messag.
5. according to claim 1,2,3 or 4 described methods of in based on the Radio Access Network of 802.16 standards, the MPLS Business Stream being classified, it is characterized in that described Radio Access Network based on 802.16 standards comprises global interactive inserting of microwave WIMAX network.
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| CN2005100801763A CN1889582B (en) | 2005-06-30 | 2005-06-30 | Method for sorting MPLS business stream in a wireless access network based on 802.16 standard |
| PCT/CN2006/001367 WO2007003098A1 (en) | 2005-06-30 | 2006-06-16 | A method for classifying the multiple protocol label switching traffic stream |
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| KR100859810B1 (en) | 2007-04-10 | 2008-09-24 | 삼성전자주식회사 | Wibro service system and method for setting data path thereof |
| CN101163100B (en) * | 2007-11-12 | 2011-08-24 | 中兴通讯股份有限公司 | Tunnel mapping method |
| CN101841456B (en) * | 2009-03-18 | 2012-07-25 | 中国电信股份有限公司 | Method and system for implementing service application division |
| CN110096519A (en) * | 2019-04-09 | 2019-08-06 | 北京中科智营科技发展有限公司 | A kind of optimization method and device of big data classifying rules |
| CN112507005B (en) * | 2019-09-16 | 2024-04-16 | 北京京东振世信息技术有限公司 | Method and device for processing message |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6205488B1 (en) * | 1998-11-13 | 2001-03-20 | Nortel Networks Limited | Internet protocol virtual private network realization using multi-protocol label switching tunnels |
| CN1408150A (en) * | 2000-12-02 | 2003-04-02 | 皇家菲利浦电子有限公司 | Radio communication system |
| US6636509B1 (en) * | 1999-05-11 | 2003-10-21 | Cisco Technology, Inc. | Hardware TOS remapping based on source autonomous system identifier |
| KR20050052879A (en) * | 2003-12-01 | 2005-06-07 | 주식회사 케이티 | Method for service traffic classification for the ethernet line service |
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- 2005-06-30 CN CN2005100801763A patent/CN1889582B/en not_active Expired - Fee Related
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6205488B1 (en) * | 1998-11-13 | 2001-03-20 | Nortel Networks Limited | Internet protocol virtual private network realization using multi-protocol label switching tunnels |
| US6636509B1 (en) * | 1999-05-11 | 2003-10-21 | Cisco Technology, Inc. | Hardware TOS remapping based on source autonomous system identifier |
| CN1408150A (en) * | 2000-12-02 | 2003-04-02 | 皇家菲利浦电子有限公司 | Radio communication system |
| KR20050052879A (en) * | 2003-12-01 | 2005-06-07 | 주식회사 케이티 | Method for service traffic classification for the ethernet line service |
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| CN1889582A (en) | 2007-01-03 |
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