CN101400083B - Method, system and device for head compression of packet and service stream classified sending - Google Patents
Method, system and device for head compression of packet and service stream classified sending Download PDFInfo
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Abstract
An embodiment of the invention discloses a method of compressing data headers, comprising: receiving data message carried with classification rule identification, finding compressed context corresponding to the classification rule identification, if finding, performing compress treatment on the data header, through comparing the found fields except for the fields included by the classification rule in the compressed context; if not finding, building the compressed context corresponding to the classification rule identification. The embodiment of the invention also discloses a system and a device of compressing data headers, and a method of performing traffic flow soring transmission. According to the invention, treating load of compressing the data headers and performing traffic flow soring on the data message is reduced, system resources are saved.
Description
Technical field
The present invention relates to the IP communication technical field, relate in particular to the method, system and device that message carried out head compression and service stream classification transmission.
Background technology
World Interoperability for Microwave Access, WiMax (WiMAX) is a wireless MAN access technology, and its maximum transfer speed 75Mbit/ second, signal transmission radius reaches 50 kilometers, can cover outskirts of a town basically.Because this long-distance transmissions characteristic, WiMAX will be not only the technology that solves wireless access, can also insert as cable network, and for example the wireless extensions of optical fiber (Cable), DSL realizes that easily backwoodsman network connects, and has broad application prospects.
Accompanying drawing 1 is the WiMAX network reference model, and the WiMAX network is made up of access service network (ASN) and connectivity serving network (CSN).ASN is by Network Access Provider (NAP) management, and CSN is managed by Internet Service Provider (NSP).Portable terminal (MS) may roam into other CSN from oneself signatory CSN, the provider of the CSN that management MS is signatory is called home network service provider (Home NSP), and the provider of management MS being roamed the CSN that arrives is called access zone network service provider (Visited NSP).R1 among the figure, R2, R3, R4, R5 represent the interface of cellular logic inter-entity, application service provider (ASP) is for providing the operator of concrete business.
Simultaneously, as shown in Figure 2, (ASNGateway, ASN-GW) form by two logic entities by base station (BS) and access service network gateway for the ASN network.Wherein,
BS has following function:
1. provide BS to be connected with the second layer of mobile subscriber station (MSS);
2. RRM;
3. measure and power control;
4. the compression of the data of eating dishes without rice or wine and encryption.
ASN-GW has following function:
1. provide client functionality for MSS authentication function;
2. support the network of NSP to find and selection;
3. the relay function (as IP address assignment) of the 3rd layer of information is provided for MSS;
4. RRM.
The Business Stream of data message transmission can be one or more in the WiMAX network, and different business stream has different service quality (QoS), and the corresponding one or more classifying ruless of each Business Stream are represented the message rule of this Business Stream.The also corresponding tunnel of each Business Stream, the data message that belongs to a certain Business Stream transmits in the tunnel of this Business Stream correspondence.During downlink message, ASN-GW will classify according to the classifying rules that is provided with from the data message that the R3 mouth receives in transmission, this data message is divided into a certain class Business Stream after, the tunnel by this Business Stream correspondence on the R6 mouth is delivered to BS with data message.In the above-mentioned flow process, data message classified according to the classifying rules that is provided be specially: according to the heading of data message, search the classifying rules that field contents met of this heading, data message is divided into the pairing Business Stream of the classifying rules that finds.For example, the heading field contents of a certain data message is:
Destination address 100.10.10.2,
Protocol type: udp protocol,
Destination slogan: 4500;
COS: 0.
The classifying rules that is provided with has following two:
One: traffic stream identifier 1, destination address 100.10.10.3, udp protocol, destination slogan 1000, COS: 1;
Two: traffic stream identifier 2, destination address 100.10.10.2, udp protocol, destination slogan 4500; COS: 0.
This data message is being carried out the branch time-like, heading content according to above-mentioned classifying rules and this data message, search and find that this data message meets classifying rules two, classifying rules two corresponding service traffic identifier are 2, then this data message is divided into classifying rules two pairing Business Streams 2, this data message is delivered to BS by the tunnel of Business Stream 2 correspondences.At present, the tunnel has following three types: generalized routing protocol encapsulation (GRE), Virtual Local Area Network, multiprotocol label switching (mpls).
BS need at first utilize certain classifying rules that the data heading is compressed processing when receiving data message, and then the data message after will handling sends to MS, and MS carries out decompression to the data message of receiving and obtains data.Adopt robustness head compression (ROHC) technology to realize the compression and decompression of data message head at present, ROHC can carry out the heading compression and decompression to RTP/user datagram protocol/the Internet protocol (RTP/UDP/IP), user datagram protocol/the Internet protocol (UDP/IP), Encapsulating Security Payload/Internet Protocol (ESP/IP) message.
Concrete, when BS receives data message, at first, heading according to this data message, by comparing one by one, in the compressed context information of preserving, search the identical compressed context of corresponding field content in static state (static) field contents that comprises and this data message head, if do not find, then set up and preserve new compressed context, this compressed context comprises all compressible field contents of Context identifier and data message head; Then, the data message that carries described Context identifier is sent to MS, when MS receives this data message, preserve new compressed context, this compressed context comprises all compressible field contents of described Context identifier and data message head.The compressible field contents of various data message heads as shown in Figure 3.
If above-mentionedly find the identical compressed context of corresponding field content in the static field contents that comprises and this data message head, whether the variation in the compressed context that then relatively finds (changing) field contents is compared with the corresponding field content in the data message head and is changed, if change, then in described compressed context, the field contents that changes is upgraded, then, in the data message head, to give up except that the compressible field contents the changing field that changes, the data message that will comprise residue message data and described Context identifier sends to MS, when MS receives this data message, in the compressed context of preserving, search the compressed context of the Context identifier correspondence in this data message, utilize the changing field in the data message head to upgrade the compressed context that finds, and according to this compressed context restoring data heading.If do not change, then all the compressible fields in the data message head are given up, the data message that will comprise residue message data and described Context identifier sends to MS, when MS receives this data message, in the compressed context of preserving, search the compressed context of the Context identifier correspondence in this data message, according to the compressed context restoring data heading that finds.
Such as: the heading field contents that BS receives a certain data message is:
Destination address (static): 100.10.10.2,
Protocol type (static): udp protocol,
Destination slogan (static): 4500;
COS (changing): 0;
The compressed context information of having preserved has following two:
One: Context identifier 1, destination address 101.10.10.3, udp protocol, destination slogan 1000, source address 101.10.10.7, COS 0;
Two: Context identifier 2, destination address 101.10.10.2, udp protocol, destination slogan 4000, source address 101.10.10.8, COS 1.
When this data message being compressed processing, through comparing one by one, not finding destination address is that 100.10.10.2, protocol type are that udp protocol, destination slogan are 4500 compressed context, then set up and preserve new compressed context, this compressed context comprises that Context identifier is 3, destination address 100.10.10.2, udp protocol, destination slogan 4500 and COS 0, at this moment, the compressed context information of preservation has following three:
One: Context identifier 1, destination address 101.10.10.3, udp protocol, destination slogan 1000, source address 101.10.10.7, COS 0;
Two: Context identifier 2, destination address 101.10.10.2, udp protocol, destination slogan 4000, source address 101.10.10.8, COS 1;
Three: Context identifier 3, destination address: 100.10.10.2, udp protocol, the destination slogan: 4500, COS 1.
Then, the data message that carries Context identifier 3 is sent to MS; When MS receives this data message, set up and preserve new compressed context: Context identifier 3, destination address: 100.10.10.2, udp protocol, the destination slogan: 4500, COS 1.
The follow-up destination address that receives of BS is 100.10.10.2, protocol type is a udp protocol, the destination slogan is 4500, when COS is 1 data message, through comparing one by one, find the destination address that comprises, the Context identifier that protocol type is identical with corresponding field content in the data message head with destination slogan field contents is 3 compressed context, with the type of service field content update in this compressed context is 1, then, with the destination address in this data message head, protocol type, destination slogan field is given up, remaining message data and Context identifier 3 are sent to MS, MS is according to the Context identifier in the message 3, find corresponding compressed context, with the type of service field content update in this compressed context is 1, and utilizes this compressed context reduction heading.
The follow-up destination address that receives again of BS is 100.10.10.2, protocol type is a udp protocol, the destination slogan is 4500, when COS is 1 data message, through comparing one by one, find the destination address that comprises, the Context identifier that protocol type is identical with corresponding field content in the data message head with destination slogan field contents is 3 compressed context, and the type of service field in this compressed context does not change, then with the destination address in this data message head, protocol type, destination slogan and service type field are given up, remaining message data and Context identifier 3 are sent to MS, MS is according to the Context identifier in the message 3, find corresponding compressed context, utilize this compressed context reduction heading.
According to foregoing description, the data heading being compressed when handling, finish once compression and handle, often need to pay the workload of each field of many bar compressed context, handle complicatedly, increased the weight of the load of system; When the data message was carried out service stream classification, the classifying rules that a field that need be by the comparing data message and each field of classifying rules find this data message to meet was handled complicatedly, has increased the weight of the load of system.
Summary of the invention
The embodiment of the invention provides a kind of method, system and device of packed data heading, in order to solve in the prior art data heading is compressed the bigger problem of system loading when handling.
The embodiment of the invention provides a kind of the data message is carried out the method that service stream classification sends, the bigger problem of system loading when in order to solve in the prior art data message being carried out service stream classification.
The embodiment of the invention provides a kind of method of packed data heading, and this method comprises:
Receive the data message that carries classification rule identification, search the compressed context of described classification rule identification correspondence, if find, other fields of field that classifying rules comprises by removing described classification rule identification correspondence in the compressed context that relatively finds and the corresponding field of described data message head are compressed processing to described data message head; If do not find, then set up the compressed context of described classification rule identification correspondence.
The embodiment of the invention provides a kind of the data message is carried out the method that service stream classification sends, and this method comprises:
According to a field of data message, determine the classifying rules of described data message correspondence, search the compressed context of described classifying rules correspondence, if find, then utilize the compressed context that finds that described data message head is compressed processing; If do not find, then set up the compressed context of described classifying rules correspondence; The data message that carries described classification rule identification is sent;
When receiving the data message that carries classification rule identification, determine described classifying rules corresponding service stream, the tunnel by described Business Stream correspondence sends described data message.
The embodiment of the invention provides a kind of system of packed data heading, and this system comprises:
Gateway unit is used for sending the data message that comprises classification rule identification to compression unit;
Compression unit, when being used to receive described data message, search the compressed context of described classification rule identification correspondence, if find, by comprising the field the field and the corresponding field of described data message head except that the classifying rules of described classification rule identification correspondence in the compressed context that relatively finds, described data message head is compressed processing; If do not find, then set up the compressed context of described classification rule identification correspondence.
The embodiment of the invention provides a kind of compression set, and this device comprises:
Receiving element is used to receive the data message that comprises classification rule identification;
Processing unit, be used to search the compressed context of described classification rule identification correspondence, if find, by comprising the field the field and the corresponding field of described data message head except that the classifying rules of described classification rule identification correspondence in the compressed context that relatively finds, described data message head is compressed processing; If do not find, then set up the compressed context of described classification rule identification correspondence.
The beneficial effect of the embodiment of the invention is:
In the embodiment of the invention, when the data heading being compressed processing, search compressed context according to the classification rule identification that data message carries, when finding, carry out corresponding head compression by the corresponding field that comprises field the field and described data message head except that the classifying rules of described classification rule identification correspondence in the compressed context that relatively finds and handle.As seen, finish once compression and handle, reduced the relatively workload of field, reduced the processing load of system, saved system resource.When the data message being carried out the service stream classification processing, directly determine Business Stream according to the classification rule identification of carrying in the data message, finish service stream classification, saved the relatively workload of field, reduced the processing load of system, saved system resource.
Description of drawings
Fig. 1 is the network topological diagram of WiMAX in the prior art;
Fig. 2 is the structural representation of ASN in the prior art;
Fig. 3 is the schematic diagram of data message head in the prior art;
Fig. 4 is the method flow schematic diagram of the embodiment of the invention;
Fig. 5 A is the schematic diagram of applied resource reservation request message in the embodiment of the invention;
Fig. 5 B is an applied schematic diagram of setting up the data path request message in the embodiment of the invention;
Fig. 5 C is the schematic diagram of applied modification data path request message in the embodiment of the invention;
Fig. 5 D is the schematic diagram that comprises MS Info cell among Fig. 5 A, Fig. 5 B and Fig. 5 C;
Fig. 5 E is the schematic diagram of the SF Info cell that comprised of described MS Info cell;
Fig. 5 F is the schematic diagram of the Packet Classification Rule/Media FlowDescription cell that comprised of described SF Info cell;
Fig. 6 is the structural representation of system that the embodiment of the invention provides;
Fig. 7 is the structural representation of system that the embodiment of the invention provides;
Fig. 8 is the structural representation of embodiment of the invention institute generator.
Embodiment
For the compression of simplifying present data message head is handled, reduce the system handles load, the embodiment of the invention provides a kind of method of packed data heading, in this method, the result of service stream classification is carried out in utilization to the data message, the data message that carries classification rule identification is sent to compression end, compression end is when compressing processing to the data heading, search compressed context according to the classification rule identification that data message carries, if find, then the data heading is compressed according to the compressed context that finds; If do not find, then rebulid compressed context.
The method of the packed data heading that the embodiment of the invention is provided below in conjunction with accompanying drawing describes:
Step S10: the service stream classification entity is according to the heading of data message to be sent, search the identical classifying rules of corresponding field content in the field contents that comprises and this data message head, tunnel by the classifying rules corresponding service that finds flows sends to compression end with the data message that carries described classification rule identification;
Step S11: when compression end receives described data message, this data message is compressed processing according to the classification rule identification in this data message, referring to Fig. 4, specific as follows:
Step 40: obtain the classification rule identification in the described data message;
When first entity is the service stream classification entity, before this step, the service stream classification entity can carry classified information in sending to the control signaling of compression end, this classified information comprises whether transmitting classification rule identification, whether adopts double layer tunnel and classification rule identification length.
Described control signaling includes but not limited to: resource reservation request message (RR Req), set up data path request message (Path_Reg_Req), revise data path request message (Path_Modification_Req).As Fig. 5 A, Fig. 5 B, shown in Fig. 5 C, be respectively RR_Req, Path_Reg_Req, the cell content that Path_Modification_Req message is comprised, these three message all comprise end message (MSInfo) cell, the content of MS Info cell is shown in Fig. 5 D, MS Info comprises Business Stream information (SF Info) cell, the content of SF Info cell is shown in Fig. 5 E, SF Info comprises classifier rules (PacketClassification Rule/Media FloW Description) cell, in this cell, increase Indextransfer, Indexlen and Innerpath cell, whether Indextransfer transmits the grader index in order to expression, Indexlen is in order to presentation class device index length, whether Innerpath adopts double layer tunnel in order to expression, shown in Fig. 5 F.
So, during classification rule identification in this step in obtaining data message, can obtain according to the classified information in the control signaling that receives, be specially: in classified information, if whether transmit classification rule identification item content for transmitting classification rule identification, then check whether adopt the double layer tunnel item, in this content when adopting double layer tunnel, with the internal layer Tunnel Identifier received as classification rule identification; When not adopting double layer tunnel, continue to check classification rule identification length item in this content,, in the Tunnel Identifier of receiving, read the bit of respective length according to this content, with the bit contents that reads as classification rule identification.If the above-mentioned classification rule identification item content of whether transmitting is not for transmitting classification rule identification, then follow-up compresses the prior art scheme that adopts of handling to the data heading.
Certainly, this step can also be obtained classification rule identification in the data message according to default policy, is specifically as follows: with the internal layer Tunnel Identifier received as classification rule identification; Perhaps,, in the Tunnel Identifier of receiving, read the bit of respective length according to the classification rule identification length that is provided with, with the bit contents that reads as classification rule identification.
Step 41: search the compressed context of described classifying rules correspondence, if do not find, to step 42, if find, to step 43;
This step has following dual mode:
Mode one: from the compressed context information of preserving, search the compressed context that comprises described classification rule identification, with the compressed context that finds compressed context as described classifying rules correspondence;
Mode two: in the corresponding relation of classification rule identification of preserving and compressed context sign, search the corresponding relation that comprises described classification rule identification, after finding, from the compressed context information of preserving, search the compressed context of the compressed context sign that comprises described classification rule identification correspondence, with the compressed context that finds compressed context as described classifying rules correspondence.
Step 42: set up new compressed context, the data message that will comprise the compressed context sign of foundation sends to decompressor end, when decompressor end receives this data message, set up and preserve new compressed context, this compressed context comprises the compressible field of described compressed context sign and described data message head, and this flow process finishes;
Here, setting up new compressed context is specifically as follows:
Corresponding to aforesaid way one, method for building up is: increase and preserve new compressed context, this compressed context comprises the compressible field contents of described classification rule identification, compressed context sign and described data message head; Corresponding to aforesaid way two, method for building up is: increase and preserve new compressed context, this compressed context comprises the compressible field contents of compressed context sign and described data message head, and increases the corresponding relation of preserving described classification rule identification and described compressed context sign;
Step 43:, described data message head is compressed processing by comprising other fields the field and the corresponding field of described data message head except that described classifying rules in the compressed context that relatively finds;
As first embodiment, comprise other fields the field except that described classifying rules in the described compressed context, comprise the first kind field and the second class field, this step specifically comprises:
Step S01: relatively whether first kind field contents is compared with the corresponding field content of described data message head and is changed, if, to step S02; Otherwise, to step S03;
Step S02; Referring to step 42, repeat no more here;
Step S03: whether the more described second class field contents is compared with the corresponding field content of described data message head and is changed, if then arrive step S04; Otherwise, to step S05;
Step S04: according to the field that does not change in described first kind field and the described second class field described data message is carried out the head compression, the data message after the compression is sent to decompressor end, and upgrade described compressed context;
Be specially, the second class field contents that changes in the described compressed context is upgraded, it is all identical with the corresponding field content of described data message head to upgrade the described second class field contents in back.During transmission, in described data message head, the field contents that does not change in described first kind field and the described second class field is given up, the data message that will comprise residue message data and described compressed context sign sends to decompressor end.When decompressor end receives described data message, in the compressed context of preserving, search the corresponding compressed context of compressed context sign in this data message, utilize the second class field in the data message head to upgrade the compressed context that finds, and according to this compressed context restoring data heading;
Step S05: the whole fields according to described compressed context are carried out the head compression to described data message, and the data message after the compression is sent to decompressor end;
Be specially, in described data message head, whole field contents of described compressed context given up, the data message that will comprise residue message data and described compressed context sign sends to decompressor end.When decompressor end receives described data message, in the compressed context of preserving, search the corresponding compressed context of compressed context sign in this data message, according to the compressed context restoring data heading that finds.
As second embodiment, comprise other fields the field except that described classifying rules in the described compressed context, comprise first kind field, step 43 specifically comprises:
Step S11: whether the first kind field contents in the compressed context that relatively finds is compared with the corresponding field content of described data message head and is changed, if change, to step S12; Otherwise, to step S13;
Step S12:, repeat no more here referring to step 42;
Step S13:, repeat no more here referring to step S05.
As the 3rd embodiment, comprise other fields the field except that described classifying rules in the described compressed context, comprise the second class field, step 43 specifically comprises:
Step S21: whether the second class field contents in the more described compressed context is compared with the corresponding field content of described data message head and is changed, if, to step S22; Otherwise, to step S23;
Step S22:, repeat no more here referring to step S04;
Step S23:, repeat no more here referring to step S05.
Need to prove that the first kind field in the compressed context and the second class field can be respectively static state (static) field and variation (changing) field in the available data heading, also can be according to certain field that rule set in advance.
The present invention will be described below in conjunction with specific embodiment:
In the present embodiment, according to classifying rules the data message is carried out service stream classification by ASN-GW, the data message that will comprise classification rule identification sends to BS; BS compresses processing according to the classification rule identification in this data message to the data heading, and the data message that will compress after handling sends to MS.Specifically comprise:
Step 1: policing feature server (PF) is initiated as user A and sets up 2 Business Streams, and Business Stream is preserved following information after setting up on ASN-GW:
Step 2:ASN-GW receives data message, and its field contents comprises: source address 110.10.11.20, destination address 100.10.10.2, udp protocol, destination slogan 4000, COS 0; Search the classifying rules of each Business Stream, find to meet the classifying rules 2 of Business Stream 1, data message is sent to BS, carry outer layer tunnel sign 10 and internal layer Tunnel Identifier (classification rule identification) 2 in the data message of transmission by double layer tunnel;
When step 3:BS receives described data message, the internal layer Tunnel Identifier 2 in this data message as classification rule identification, from the compressed context information of preserving, is searched the compressed context that comprises classification rule identification 2; Do not find, then set up and preserve new compressed context: compressed context sign 1, classification rule identification 2, source address 110.10.11.20, destination address 100.10.10.2, udp protocol, destination slogan 4000, COS 0; The data message that carries compressed context sign 1 is sent to MS, when MS receives this data message, preserve compressed context: compressed context sign 1, source address 110.10.11.20, destination address 100.10.10.2, udp protocol, destination slogan 4000, COS 0;
The follow-up data message that receives of step 4:BS, the classification rule identification in this data message still is 2, its field contents comprises: source address 111.10.11.20, destination address 100.10.10.2, udp protocol, destination slogan 4000, COS 0; From the compressed context information of preserving, search the compressed context that comprises classification rule identification 2; Find above-mentioned 1 the compressed context that is designated, but the static state of this compressed context (static) field-source address field content is 110.10.11.20, different with the source address 111.10.11.20 in the data message head, then set up and preserve new compressed context: compressed context sign 2, classification rule identification 2, source address 111.10.11.20, destination address 100.10.10.2, udp protocol, destination slogan 4000, COS 0; The data message that carries compressed context sign 2 is sent to MS, when MS receives this data message, preserve compressed context: compressed context sign 2, source address 111.10.11.20, destination address 100.10.10.2, udp protocol, destination slogan 4000, COS 0;
The follow-up data message that receives of step 5:BS, the classification rule identification in this data message still is 2, its field contents comprises: source address 111.10.11.20, destination address 100.10.10.2, udp protocol, destination slogan 4000, COS 1; From the compressed context information of preserving, search the compressed context that comprises classification rule identification 2; Find above-mentioned 2 the compressed context that is designated, and the static state of this compressed context (static) field-source address field content is identical with source address 111.10.11.20 in the data message, but changing (changing) field-type of service field content is 1, different with the COS 0 in the data message head, then this compressed context is updated to: compressed context sign 2, source address 111.10.11.20, destination address 100.10.10.2, udp protocol, destination slogan 4000, COS 1; With the source address 111.10.11.20 in the data message head, destination address 100.10.10.2, udp protocol, destination slogan 4000 is given up, the data message that carries residue message data and compressed context sign 2 is sent to MS, when MS receives this data message, 2 the compressed context of being designated of preserving is updated to: compressed context sign 2, source address 111.10.11.20, destination address 100.10.10.2, udp protocol, destination slogan 4000, COS 1 is simultaneously according to this compressed context restoring data heading;
The follow-up data message that receives of step 6:BS, the classification rule identification in this data message still is 2, its field contents comprises: source address 111.10.11.20, destination address 100.10.10.2, udp protocol, destination slogan 4000, COS 1; From the compressed context information of preserving, search the compressed context that comprises classification rule identification 2; Find above-mentioned 2 the compressed context that is designated, and all the corresponding field content with the data message head is identical with variation (changing) field for the static state of this compressed context (static) field, then with the source address 111.10.11.20 in the data message head, destination address 100.10.10.2, udp protocol, destination slogan 4000 and service Class1 are given up, the data message that carries residue message data and compressed context sign 2 is sent to MS, when MS receives this data message, find the compressed context that comprises and be designated 2 compressed context, according to this compressed context restoring data heading.
At present the data message is carried out the processing of service stream classification in order to simplify, reduce the system handles load, the embodiment of the invention also provides a kind of the data message is carried out the method that service stream classification sends, in this method, when receiving the data message that carries classification rule identification, finish service stream classification to the data message according to this classification rule identification.
Concrete, this method comprises:
Steps A: when compression entity receives data message,, determine the classifying rules of described data message correspondence according to a field of this data message;
Be specially, in the classifying rules of preserving, search the classifying rules of a field contents correspondent equal of the field contents that comprises and described data message.
Step B: search the compressed context of described classifying rules correspondence, if find, to step C, otherwise, to step D;
Here, the compressed context of searching described classifying rules correspondence repeats no more here specifically with step 41.
Step C: after utilizing the compressed context that finds that described data message head is compressed processing, the data message that carries described classification rule identification is sent to the service stream classification entity, to step e;
Here, described data message head is compressed processing specifically with step 43, repeat no more here.
Step D: set up the compressed context of described classifying rules correspondence, the data message that carries described classification rule identification is sent to the service stream classification entity, to step e;
Here, the compressed context of setting up described classifying rules correspondence repeats no more here specifically with step 42.
Step e: when the service stream classification entity receives described data message, determine described classifying rules corresponding service stream, the tunnel by described Business Stream correspondence sends described data message.
Be specially, according to the classification rule identification of preserving and the corresponding relation of traffic stream identifier, determine described classification rule identification corresponding service traffic identifier, described data message is sent to the tunnel of described Business Stream correspondence, described data message is sent by this tunnel.
Certainly, among the above-mentioned steps B-step D data heading is compressed processing and also can adopt existing mode, difference is to carry classification rule identification in the data message that sends to the service stream classification entity.
Referring to Fig. 6, the embodiment of the invention also provides a kind of system of packed data heading, and this system comprises:
Gateway unit 60 is used for sending the data message that comprises classification rule identification to compression unit;
Gateway unit 60 is used for: according to classifying rules described data message is carried out service stream classification, send the data message of the classification rule identification that carries the Business Stream correspondence that described data message belongs to described compression unit.
Receiving element 70 is used to receive described data message;
Acquiring unit 71 is used for obtaining the classification rule identification of described data message;
Processing unit 72, be used to search the compressed context of described classification rule identification correspondence, if find, by comprising other fields the field and the corresponding field of described data message head except that described classifying rules in the compressed context that relatively finds, described data message head is compressed processing; If do not find, then set up the compressed context of described classification rule identification correspondence.
Acquiring unit 71 comprises:
Processing unit 72 comprises:
Comparing unit 83, be used for described when searching the unit and finding the compressed context of described classification rule identification correspondence, by comprising other fields the field and the corresponding field of described data message head except that described classifying rules in the compressed context that relatively finds, described data message head is compressed processing;
Set up unit 84, be used for described setting up the compressed context of described classification rule identification correspondence when searching the unit and not finding the compressed context of described classification rule identification correspondence.
Searching unit 82 comprises:
The 3rd unit 821 is used to search the compressed context that comprises described classification rule identification;
The 4th unit 822 is used for the corresponding relation according to classification rule identification of preserving and compressed context sign, determines the compressed context sign of described classification rule identification correspondence, searches the compressed context that comprises described compressed context sign.
Comparing unit 83 comprises:
The 5th unit 831, be used for when described compressed context comprises the first kind field and the second class field except that the classifying rules of described classification rule identification correspondence comprises other fields the field, whether the first kind field contents in the more described compressed context is compared with the corresponding field content of described data message head and is changed, if change, then notify the described compressed context that described classification rule identification correspondence is set up in the unit of setting up; If do not change, whether the second class field contents in the then more described compressed context is compared with the corresponding field content of described data message head and is changed, if, the second class field contents that then will change upgrades, utilize the field that does not change in the described compressed context that described data message head is compressed processing, otherwise, utilize the whole fields in the described compressed context that described data message head is compressed processing;
The 6th unit 832, be used for when described compressed context comprises first kind field except that the classifying rules of described classification rule identification correspondence comprises other fields the field, whether the first kind field contents in the more described compressed context is compared with the corresponding field content of described data message head and is changed, if change, then notify the described compressed context that described classification rule identification correspondence is set up in the unit of setting up; If do not change, then utilize the whole fields in the described compressed context that described data message head is compressed processing;
The 7th unit 833, be used for when described compressed context comprises the second class field except that the classifying rules of described classification rule identification correspondence comprises other fields the field, whether the second class field contents in the more described compressed context is compared with the corresponding field content of described data message head and is changed, if, the second class field contents that then will change upgrades, and utilizes the field that does not change in the described compressed context that described data message head is compressed processing; Otherwise, utilize the whole fields in the described compressed context that described data message head is compressed processing.
Setting up unit 84 comprises:
The 8th unit 841 is used to increase and preserves new compressed context, comprises the compressible field contents of compressed context sign, described classification rule identification and described data message head in this compressed context;
The 9th unit 842, be used to increase the new compressed context of preservation, comprise the compressible field contents of compressed context sign and described data message head in this compressed context, and increase the corresponding relation of preserving described classification rule identification and described compressed context sign.
Referring to Fig. 7, the embodiment of the invention also provides a kind of the data message is carried out the system that service stream classification sends, and this system comprises:
Described classifying rules corresponding service stream when being used to receive described data message, is determined in service stream classification unit 81, and the tunnel by described Business Stream correspondence sends described data message.
First transmitting element 802, be used for described when searching the unit and finding compressed context, after the compressed context that utilization finds is compressed processing to described data message head, send the data message that carries described classification rule identification to described service stream classification unit;
Second transmitting element 803 is used for described setting up the compressed context of described classifying rules correspondence when searching the unit and not finding compressed context, sends the data message that carries described classification rule identification to described service stream classification unit.
Referring to Fig. 8, the embodiment of the invention also provides a kind of compression set, and this device comprises:
Receiving element 70 is used to receive the data message that comprises classification rule identification;
Processing unit 91, be used to search the compressed context of described classification rule identification correspondence, if find, by comprising other fields the field and the corresponding field of described data message head except that the classifying rules of described classification rule identification correspondence in the compressed context that relatively finds, described data message head is compressed processing; If do not find, then set up the compressed context of described classification rule identification correspondence.
This device further comprises:
Acquiring unit 92, this acquiring unit comprises the first module 80 and second unit 81, wherein, first module 80, be used for obtaining described classification rule identification according to the classified information that the control signaling that receives is carried, be specially: if double layer tunnel is adopted in classified information indication, then with the internal layer Tunnel Identifier received as classification rule identification; If the individual layer tunnel is adopted in classified information indication, then in the Tunnel Identifier of receiving, read the content of the classification rule identification length in the classified information, with the content that reads as classification rule identification; Second unit 81 is used for obtaining described classification rule identification according to the default policy that is provided with.
Processing unit 91 comprises:
Comparing unit 83, be used for described when searching the unit and finding the compressed context of described classification rule identification correspondence, by comprising other fields the field and the corresponding field of described data message head except that the classifying rules of described classification rule identification correspondence in the compressed context that relatively finds, described data message head is compressed processing;
Set up unit 84, be used for described setting up the compressed context of described classification rule identification correspondence when searching the unit and not finding the compressed context of described classifying rules correspondence.
Searching unit 82 comprises:
The 3rd unit 821 is used to search the compressed context that comprises described classification rule identification;
The 4th unit 822 is used for the corresponding relation according to classification rule identification of preserving and compressed context sign, determines the compressed context sign of described classification rule identification correspondence, searches the compressed context that comprises described compressed context sign.
Comparing unit 83 comprises:
The 5th unit 831, be used for when other fields that described compressed context is removed the field that classifying rules comprises of described classification rule identification correspondence comprise the first kind field and the second class field, whether the first kind field contents in the more described compressed context is compared with the corresponding field content of described data message head and is changed, if change, then notify the described compressed context that described classification rule identification correspondence is set up in the unit of setting up; If do not change, whether the second class field contents in the then more described compressed context is compared with the corresponding field content of described data message head and is changed, if, the second class field contents that then will change upgrades, utilize the field that does not change in the described compressed context that described data message head is compressed processing, otherwise, utilize the whole fields in the described compressed context that described data message head is compressed processing;
The 6th unit 832, be used for when described compressed context comprises first kind field except that the classifying rules of described classification rule identification correspondence comprises other fields the field, whether the first kind field contents in the more described compressed context is compared with the corresponding field content of described data message head and is changed, if change, then notify the described compressed context that described classification rule identification correspondence is set up in the unit of setting up; If do not change, then utilize the whole fields in the described compressed context that described data message head is compressed processing;
The 7th unit 833, be used for when described compressed context comprises the second class field except that the classifying rules of described classification rule identification correspondence comprises other fields the field, whether the second class field contents in the more described compressed context is compared with the corresponding field content of described data message head and is changed, if, the second class field contents that then will change upgrades, and utilizes the field that does not change in the described compressed context that described data message head is compressed processing; Otherwise, utilize the whole fields in the described compressed context that described data message head is compressed processing.
Setting up unit 84 comprises:
The 8th unit 841 is used to increase and preserves new compressed context, comprises the compressible field contents of compressed context sign, classification rule identification and described data message head in this compressed context;
The 9th unit 842, be used to increase the new compressed context of preservation, comprise the compressible field contents of compressed context sign and described data message head in this compressed context, and increase the corresponding relation of preserving described classification rule identification and described compressed context sign.
To sum up, in the embodiment of the invention, when the data heading being compressed processing, search compressed context, search simple according to the classification rule identification that data message carries; When finding, carry out corresponding head by other fields of removing field that described classifying rules comprises in the compressed context that relatively finds with the corresponding field of described data message head and compress processing, and do not need whole fields of comparison compressed context, reduced the processing load of system, save system resource, helped to improve the disposal ability of system.When the data message is carried out service stream classification, directly determine Business Stream according to the classification rule identification of carrying in the data message, finish service stream classification, and do not need to determine the classifying rules that this data message meets by a field of comparing data message and each field of classifying rules, reduce the processing load of system, saved system resource.And, realize that the present invention does not need to revise existing procedure, original system is had compatible preferably.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (20)
1. the method for a packed data heading is characterized in that, this method comprises:
Receive the data message that carries classification rule identification;
Search the compressed context of described classification rule identification correspondence, if find, by comprising the field the field and the corresponding field of described data message head except that the classifying rules of described classification rule identification correspondence in the compressed context that relatively finds, described data message head is compressed processing; If do not find, then set up the compressed context of described classification rule identification correspondence.
2. the method for claim 1 is characterized in that, after receiving the data message that carries classification rule identification, and searches before the compressed context of described classification rule identification correspondence, and this method further comprises:
Obtain classification rule identification in the described data message according to the classified information of carrying in the control signaling that receives; Perhaps,
Obtain classification rule identification in the described data message according to the default policy that is provided with.
3. method as claimed in claim 2 is characterized in that, the classification rule identification that the classified information of carrying in the control signaling that described basis receives is obtained in the described data message comprises:
When described classified information comprises the indication information that transmits classification rule identification,
Described classified information also comprises the indication information that adopts double layer tunnel, then with the internal layer Tunnel Identifier received as classification rule identification; Perhaps, described classified information also comprises the indication information that adopts the individual layer tunnel, then reads the content of the classification rule identification length in the described classified information in the Tunnel Identifier of receiving, with the content that reads as classification rule identification.
4. the method for claim 1 is characterized in that, described compressed context of searching described classification rule identification correspondence comprises:
Search the compressed context that comprises described classification rule identification; Perhaps,
According to the corresponding relation of classification rule identification of preserving and compressed context sign, determine the compressed context sign of described classification rule identification correspondence, search the compressed context that comprises described compressed context sign.
5. the method for claim 1, it is characterized in that, the field that comprises the field except that the classifying rules of described classification rule identification correspondence in the described compressed context comprises the first kind field and the second class field, then described described data message head is compressed to handle comprise:
Whether the first kind field contents in the more described compressed context is compared with the corresponding field content of described data message head and is changed, if change, then sets up the compressed context of described classifying rules correspondence;
If do not change, whether the second class field contents in the then more described compressed context is compared with the corresponding field content of described data message head and is changed, if, the second class field contents that then will change upgrades, and utilizes the field that does not change in the described compressed context that described data message head is compressed processing; Otherwise, utilize the whole fields in the described compressed context that described data message head is compressed processing.
6. the method for claim 1 is characterized in that, the field that comprises the field except that the classifying rules of described classification rule identification correspondence in the described compressed context comprises first kind field, then described described data message head is compressed to handle comprise:
Whether the first kind field contents in the more described compressed context is compared with the corresponding field content of described data message head and is changed, if change, then sets up the compressed context of described classifying rules correspondence;
If do not change, then utilize the whole fields in the described compressed context that described data message head is compressed processing.
7. the method for claim 1 is characterized in that, the field that comprises the field except that the classifying rules of described classification rule identification correspondence in the described compressed context comprises the second class field, then described described data message head is compressed to handle comprise:
Whether the second class field contents in the more described compressed context is compared with the corresponding field content of described data message head and is changed, if, the second class field contents that then will change upgrades, and utilizes the field that does not change in the described compressed context that described data message head is compressed processing; Otherwise, utilize the whole fields in the described compressed context that described data message head is compressed processing.
8. as claim 1 or 4 or 5 or 6 described methods, it is characterized in that the described compressed context of setting up described classification rule identification correspondence comprises:
Preserve compressed context, comprise the compressible field contents of compressed context sign, described classification rule identification and described data message head in this compressed context; Perhaps,
Preserve compressed context, comprise the compressible field contents of compressed context sign and described data message head in this compressed context, and preserve the corresponding relation of described classification rule identification and described compressed context sign.
9. one kind is carried out the method that service stream classification sends to the data message, it is characterized in that this method comprises:
According to a field of data message, determine the classifying rules of described data message correspondence, search the compressed context of described classifying rules correspondence, if find, then utilize the compressed context that finds that described data message head is compressed processing; If do not find, then set up the compressed context of described classifying rules correspondence; The data message that carries described classification rule identification is sent;
When receiving the data message that carries classification rule identification, determine described classifying rules corresponding service stream, the tunnel by described Business Stream correspondence sends described data message.
10. the system of a packed data heading is characterized in that, this system comprises:
Gateway unit is used for sending the data message that comprises classification rule identification to compression unit;
Compression unit, when being used to receive described data message, search the compressed context of described classification rule identification correspondence, if find, by comprising the field the field and the corresponding field of described data message head except that the classifying rules of described classification rule identification correspondence in the compressed context that relatively finds, described data message head is compressed processing; If do not find, then set up the compressed context of described classification rule identification correspondence.
11. system as claimed in claim 10 is characterized in that, described gateway unit is used for:
According to classifying rules described data message is carried out service stream classification, send the data message of the classification rule identification that carries the Business Stream correspondence that described data message belongs to described compression unit.
12. system as claimed in claim 10 is characterized in that, described compression unit comprises:
Receiving element is used to receive described data message;
Acquiring unit is used for obtaining the classification rule identification of described data message;
Processing unit, be used to search the compressed context of described classification rule identification correspondence, if find, by comprising the field the field and the corresponding field of described data message head except that the classifying rules of described classification rule identification correspondence in the compressed context that relatively finds, described data message head is compressed processing; If do not find, then set up the compressed context of described classification rule identification correspondence.
13. system as claimed in claim 12 is characterized in that, described acquiring unit comprises:
First module, the classified information that the control signaling that is used for sending according to described gateway unit is carried is obtained described classification rule identification;
Unit second is used for obtaining described classification rule identification according to the default policy that is provided with.
14. system as claimed in claim 12 is characterized in that, described processing unit comprises:
Search the unit, be used to search the compressed context of described classification rule identification correspondence;
Comparing unit, be used for described when searching the unit and finding the compressed context of described classification rule identification correspondence, by comprising the field the field and the corresponding field of described data message head except that the classifying rules of described classification rule identification correspondence in the compressed context that relatively finds, described data message head is compressed processing;
Set up the unit, be used for described setting up the compressed context of described classification rule identification correspondence when searching the unit and not finding the compressed context of described classification rule identification correspondence.
15. a compression set is characterized in that, this device comprises:
Receiving element is used to receive the data message that comprises classification rule identification;
Processing unit, be used to search the compressed context of described classification rule identification correspondence, if find, by comprising the field the field and the corresponding field of described data message head except that the classifying rules of described classification rule identification correspondence in the compressed context that relatively finds, described data message head is compressed processing; If do not find, then set up the compressed context of described classification rule identification correspondence.
16. device as claimed in claim 15 is characterized in that, this device further comprises:
Acquiring unit, this acquiring unit comprise first module and Unit second,
Described first module is used for obtaining classification rule identification in the described data message according to the classified information that the control signaling that receives is carried;
Described Unit second is used for obtaining according to the default policy that is provided with the classification rule identification of described data message.
17. device as claimed in claim 15 is characterized in that, described processing unit comprises:
Search the unit, be used to search the compressed context of described classification rule identification correspondence;
Comparing unit, be used for described when searching the unit and finding the compressed context of described classification rule identification correspondence, by comprising the field the field and the corresponding field of described data message head except that the classifying rules of described classification rule identification correspondence in the compressed context that relatively finds, described data message head is compressed processing;
Set up the unit, be used for described setting up the compressed context of described classification rule identification correspondence when searching the unit and not finding the compressed context of described classification rule identification correspondence.
18. device as claimed in claim 17 is characterized in that, the described unit of searching comprises:
Unit the 3rd is used to search the compressed context that comprises described classification rule identification;
Unit the 4th is used for the corresponding relation according to classification rule identification of preserving and compressed context sign, determines the compressed context sign of described classification rule identification correspondence, searches the compressed context that comprises described compressed context sign.
19. device as claimed in claim 17 is characterized in that, described comparing unit comprises:
Unit the 5th, be used for when described compressed context comprises the first kind field and the second class field except that the classifying rules of described classification rule identification correspondence comprises field the field, whether the first kind field contents in the more described compressed context is compared with the corresponding field content of described data message head and is changed, if change, then notify the described compressed context that described classification rule identification correspondence is set up in the unit of setting up; If do not change, whether the second class field contents in the then more described compressed context is compared with the corresponding field content of described data message head and is changed, if, the second class field contents that then will change upgrades, utilize the field that does not change in the described compressed context that described data message head is compressed processing, otherwise, utilize the whole fields in the described compressed context that described data message head is compressed processing;
Unit the 6th, be used for when described compressed context comprises first kind field except that the classifying rules of described classification rule identification correspondence comprises field the field, whether the first kind field contents in the more described compressed context is compared with the corresponding field content of described data message head and is changed, if change, then notify the described compressed context that described classification rule identification correspondence is set up in the unit of setting up; If do not change, then utilize the whole fields in the described compressed context that described data message head is compressed processing;
Unit the 7th, be used for when described compressed context comprises the second class field except that the classifying rules of described classification rule identification correspondence comprises field the field, whether the second class field contents in the more described compressed context is compared with the corresponding field content of described data message head and is changed, if, the second class field contents that then will change upgrades, and utilizes the field that does not change in the described compressed context that described data message head is compressed processing; Otherwise, utilize the whole fields in the described compressed context that described data message head is compressed processing.
20. device as claimed in claim 17 is characterized in that, the described unit of setting up comprises:
Unit the 8th is used to preserve compressed context, comprises the compressible field contents of compressed context sign, described classification rule identification and described data message head in this compressed context;
Unit the 9th is used to preserve compressed context, comprises the compressible field contents of compressed context sign and described data message head in this compressed context, and preserves the corresponding relation of described classification rule identification and described compressed context sign.
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| CN103369593B (en) * | 2012-04-05 | 2016-08-03 | 中兴通讯股份有限公司 | A kind of method compressing reconciliation compressed ethernet message and network element device |
| WO2013163818A1 (en) * | 2012-05-04 | 2013-11-07 | Hewlett-Packard Development Company, L.P. | Context-aware http compression |
| CN103581033B (en) * | 2012-07-27 | 2016-12-21 | 重庆重邮信科通信技术有限公司 | The method and apparatus of Data Stream Processing |
| CN102938683B (en) * | 2012-09-24 | 2015-07-29 | 华为技术有限公司 | A kind of method and apparatus of data processing |
| CN103825869A (en) * | 2012-11-19 | 2014-05-28 | 中兴通讯股份有限公司 | Compression and decompression method for Ethernet message header, and compression and decompression device thereof |
| CN103873443B (en) * | 2012-12-13 | 2018-04-27 | 联想(北京)有限公司 | Information processing method, local proxy server and network proxy server |
| EP2993836B1 (en) * | 2013-06-14 | 2020-02-19 | Huawei Technologies Co., Ltd. | Method and device for routing data message |
| CN106027521B (en) * | 2016-05-19 | 2019-11-01 | 华为技术有限公司 | Compression method, decompressing method, compression set and decompression device |
| CN109818901B (en) * | 2017-11-20 | 2021-04-20 | 华为技术有限公司 | Method, device and system for determining message header compression mechanism |
| CN112148694B (en) * | 2019-06-28 | 2022-06-14 | 华为技术有限公司 | Data compression method and data decompression method for electronic equipment and electronic equipment |
| CN111641624B (en) * | 2020-05-25 | 2021-05-18 | 西安电子科技大学 | Network protocol header compression method based on decision tree |
| CN113014485B (en) * | 2021-02-25 | 2022-04-26 | 烽火通信科技股份有限公司 | Message forwarding method and message forwarding device based on SRv6-TE path |
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