CN102413049A - Method for carrying message service type to AN based on GRE expansion, apparatus thereof and system thereof - Google Patents

Method for carrying message service type to AN based on GRE expansion, apparatus thereof and system thereof Download PDF

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Publication number
CN102413049A
CN102413049A CN2011103786366A CN201110378636A CN102413049A CN 102413049 A CN102413049 A CN 102413049A CN 2011103786366 A CN2011103786366 A CN 2011103786366A CN 201110378636 A CN201110378636 A CN 201110378636A CN 102413049 A CN102413049 A CN 102413049A
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message
gre
type
service
extended attribute
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Chinese (zh)
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唐灵灵
翟来国
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ZTE Corp
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ZTE Corp
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Priority to CN2011103786366A priority Critical patent/CN102413049A/en
Publication of CN102413049A publication Critical patent/CN102413049A/en
Priority to PCT/CN2012/076379 priority patent/WO2013075475A1/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/46—Interconnection of networks
    • H04L12/4633—Interconnection of networks using encapsulation techniques, e.g. tunneling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00—Routing or path finding of packets in data switching networks
    • H04L45/302—Route determination based on requested QoS
    • H04L45/306—Route determination based on the nature of the carried application
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/12—Setup of transport tunnels

Abstract

The invention relates to a method for carrying a message service type to an AN (access network) based on GRE (generic routing encapsulation) expansion, an apparatus thereof and a system thereof. The method comprises the following steps: acquiring a service type of an IP message, and carrying the service type at an expansion attribute field of a GRE message, wherein, the GRE message is packaged with the IP message; bearing the GRE message at an RP (radio packet) link and sending the GRE message to the AN. By utilizing a GRE expansion attribute domain in a GRE protocol borne by the RP link between a PDSN (packet data service node) and the AN, through customizing a new GRE expansion attribute, service type information of the message is carried to the AN, flexibility and scalability of the AN are enhanced, and system control surface signaling cost is reduced simultaneously.

Description

Method, the Apparatus and system that the message traffic type is given AN carried in expansion based on GRE
Technical field
The present invention relates to CDMA2000 1xEV-DO (Code Division Multiple Access 20001xEV-DO; The enhancing of CDMA 2000 data) in the GSM; Access Network obtains the technical field of user's upper layer application message traffic type information, relates in particular to a kind of the expansion based on GRE and carries method, the Apparatus and system that the message traffic type is given AN.
Background technology
Along with constantly popularizing and development of mobile communication business, CDMA2000 1xEV-DO (1xEVolution Data-Only or Data-Optimized) wireless communication system is no longer only by the function of orientating traditional business Data-carryings such as accomplishing file download, web page browsing as of narrow sense.Data for the various types of traffic of carrying on the system transmissions link; For the transmission demand according to type of service provides Differentiated Services, guarantee quality of service, for the user provides better business experience; Simultaneously also in order to make system reach more excellent resource allocation; Wireless communication system Access Network (AN, Access Network) need obtain the type of service of bearing message on its transmission link, can be through the service conditions in the bearer path like AN; For providing dynamic QoS (Quality of Service, service quality), customer service guarantees.
At present, adopt deep message recognition technology (DPI, Deep Packet Inspect) to come the message traffic type is discerned usually, in the deep message recognition technology,, come the type of service of matching message according to message characteristic through the content of analytic message application layer.For wireless communication system, at present normally come the type of service of message is discerned through external DPI module or the packet data serving node (PDSN, Packet Data Service Node) that comprises the DPI function.
Be positioned at outside the AN system because external DPI module perhaps has the PDSN of DPI function, so after identifying the type of service of message, need carry to AN through the result of certain way with the type of service of identification.
In the existing processing mode, adopt the key-course signaling method type of service to be passed to AN usually by PDSN, still, this signaling transmission manner, not only response speed is slow, and has increased system's chain of command signaling consumption.In addition, PDSN is a kind of statistical information through the traffic type information that signaling method sends to AN, is unfavorable for the expansion of AN side to other business functions; If AN need expand other business functions; PDSN also need redispatch extra relevant information to AN, thus, has reduced the flexible extension property of AN.
Summary of the invention
Main purpose of the present invention is to provide a kind of the expansion based on GRE to carry method, the Apparatus and system of message traffic type to AN, is intended to strengthen flexibility and the extensibility of AN.
In order to achieve the above object, the present invention proposes a kind of the expansion based on GRE and carries the method that the message traffic type is given AN, comprising:
Obtain the type of service of IP message, and said type of service is carried at the extended attribute field of GRE message, said GRE message is packaged with said IP message;
Said GRE message is carried on the RP link sends to AN.
Preferably, the said type of service of obtaining the IP message, and the step that said type of service is carried at the extended attribute field of GRE message comprised:
Obtain the IP message through the DS network;
Discern the type of service of said IP message;
Said IP message is packaged into the GRE message;
The encode extended attribute of said GRE message is carried at said type of service the extended attribute field of said GRE message.
Preferably, the said type of service of obtaining the IP message, and the step that said type of service is carried at the extended attribute field of GRE message comprised:
Obtain the IP message through the DS network;
Said IP message is packaged into the GRE message;
Discern the type of service of IP message in the said GRE message;
The encode extended attribute of said GRE message is carried at said type of service in the extended attribute field of said GRE message.
Preferably, said type of service is the type of service that said AN need handle.
The present invention also proposes a kind of the expansion based on GRE and carries the device that the message traffic type is given AN, comprising:
Type of service is obtained package module, is used to obtain the type of service of IP message, and said type of service is carried at the extended attribute field of GRE message, and said GRE message is packaged with said IP message;
Sending module is used for that said GRE message is carried on the RP link and sends to AN.
Preferably, said type of service is obtained package module and is comprised:
Acquiring unit is used for obtaining the IP message through the DS network;
Recognition unit is used to discern the type of service of said IP message;
Encapsulation unit is used for said IP message is packaged into the GRE message;
Coding unit, the extended attribute of the said GRE message that is used to encode is carried at said type of service the extended attribute field of said GRE message.
Preferably, said acquiring unit also is used for obtaining the IP message through the DS network;
Said encapsulation unit also is used for said IP message is packaged into the GRE message;
Said recognition unit is used for discerning the type of service of said GRE message IP message;
Said coding unit, the extended attribute of the said GRE message that also is used to encode is carried at said type of service in the extended attribute field of said GRE message.
The present invention also proposes a kind of the expansion based on GRE and carries the system that the message traffic type is given AN, comprising: AN, GRE packet transmission device; Wherein:
Said GRE packet transmission device is used to obtain the type of service of IP message, and said type of service is carried at the extended attribute field of GRE message, and said GRE message is packaged with said IP message; And said GRE message is carried on the RP link sends to AN;
Said AN is used to receive the said GRE message of the type of service that carries the IP message, and said GRE message is resolved, and obtains the type of service of said IP message.
Preferably, said GRE packet transmission device comprises: the PDSN that has the DPI function; Perhaps said GRE packet transmission device comprises PDSN and the external DPI module that is connected with said PDSN.
Preferably, said GRE packet transmission device is aforesaid device.
A kind of expansion based on GRE that the present invention proposes carried method, the Apparatus and system that the message traffic type is given AN; Utilize RP (RP between PDSN and the AN; Radio-Packet) Generic Routing Encapsulation of the message of link bearer (GRE agreement; Generic Routing Encapsulation Protocol) the GRE extended attribute territory in; New GRE extended attribute through customization carries the traffic type information of message to AN, has strengthened flexibility and the extensibility of AN, has reduced system's chain of command signaling consumption simultaneously.
Description of drawings
Fig. 1 the present invention is based on the GRE expansion to carry the schematic flow sheet that the message traffic type is given method one embodiment of AN;
Fig. 2 the present invention is based on the GRE expansion to carry the message traffic type to the type of service of obtaining the IP message among method one embodiment of AN; And type of service is carried at the extended attribute field of GRE message, the GRE message is packaged with the schematic flow sheet of first kind of execution mode of IP message;
Fig. 3 the present invention is based on the GRE expansion to carry the message traffic type to the type of service of obtaining the IP message among method one embodiment of AN; And type of service is carried at the extended attribute field of GRE message, the GRE message is packaged with the schematic flow sheet of second kind of execution mode of IP message;
Fig. 4 a is the transmission sketch map to message in the execution mode shown in Figure 2;
Fig. 4 b is the transmission sketch map to message in the execution mode shown in Figure 3;
Fig. 5 the present invention is based on the GRE expansion to carry the structural representation that the message traffic type is given device one embodiment of AN;
Fig. 6 the present invention is based on the GRE expansion to carry the message traffic type is obtained package module to type of service among device one embodiment of AN structural representation;
Fig. 7 the present invention is based on the GRE expansion to carry the structural representation that the message traffic type is given one embodiment of system of AN.
In order to make technical scheme of the present invention clearer, clear, will combine accompanying drawing to do further to detail below.
Embodiment
Embodiment of the invention solution mainly is: utilize the GRE extended attribute territory in the GRE agreement of message of RP link bearer between PDSN and the AN; New GRE extended attribute through customization carries the traffic type information of message to AN; To strengthen flexibility and the extensibility of AN, reduce overhead.
As shown in Figure 1, one embodiment of the invention proposes a kind of the expansion based on GRE and carries the method that the message traffic type is given AN, comprising:
Step S101 obtains the type of service of IP message, and type of service is carried at the extended attribute field of GRE message, and the GRE message is packaged with the IP message;
Step S102 is carried on the RP link with the GRE message and sends to AN.
Present embodiment method running environment relates to DS (the Differentiated Service of PDSN, AN and core-network side in the CDMA2000 1xEV-DO GSM; Differential service) network; Based on expansion, the traffic type information of message is carried to AN through the new GRE extended attribute that customizes to the GRE extended attribute territory in the GRE agreement of RP link bearer message between PDSN and the AN.Wherein, PDSN has the DPI function, perhaps is connected with external DPI module (the external DPI module of AN).
Particularly, carry out transfer of data through the RP link between PDSN and the AN in the present embodiment, its message transmissions is based on the GRE agreement, from the IP message of core-network side DS network through the GRE encapsulation after, form the GRE message, be carried on the RP link and send to AN.Wherein: the structure of the GRE message that is packaged into is as shown in table 1 below:
Figure BDA0000112013940000051
Table 1
In the last table 1, GRE Header: be GRE protocol fields configuration section, comprise GRE Key (being used to identify the GRE link), GRE sequence number (being used to identify the ordinal relation of GRE message on the link) etc.
User Traffic: be user's upper layer application message payload.
Attributes: be the GRE extended attribute; Through customizing optional GRE extended attribute; After external DPI module or PDSN with DPI function identify the type of service of IP message; Can be in the GRE extended attribute of the GRE message that encapsulates, the type of service of arranging according to the type of service mark of the IP message of discerning identifies, thereby the traffic type information of IP message is carried to AN.
The definition extended attribute is regular as shown in table 2 below in the GRE agreement:
Table 2
Wherein, whether this GRE extended attribute of E domain identifier is last GRE extended attribute, if E is 1, then identifying this GRE extended attribute is last GRE extended attribute, if E is 0, then identifying this GRE extended attribute is not last GRE extended attribute.
The type of AttributeType domain identifier GRE extended attribute; The property value length of Length domain identifier GRE extended attribute, the property value of AttributeValue domain identifier GRE extended attribute.
The needs that present embodiment carries according to traffic type information have customized the GRE extended attribute of Application Profile Identifier in the GRE of GRE message extended attribute field, as shown in table 3 below:
Figure BDA0000112013940000061
Table 3
In the above-mentioned table 3, Type has defined the type of GRE extended attribute, is defined as 0x11 in the present embodiment; Length is the length of property value part, and the agreement classification situation of normative reference ProfileID is defined as 2 byte lengths in the present embodiment, and its configurable Application Profile ID can satisfy the needs that different service types distributes; Application Profile ID has identified the type of service of the IP message of this GRE encapsulation.
In addition; For external DPI module or have between PDSN and the AN of DPI function and need to different service types; Application Profile ID to concrete clearly arranges; So that when AN resolves the GRE extended attribute, can the Application Profile ID that parse correctly be mapped to the corresponding service type.For example: the equal configured voice type of service in both sides, corresponding A pplication Profile ID is 0003H, game service type corresponding A pplication Profile ID is 0004H etc.Secondly, all configurable at PDSN and AN both sides for the corresponding relation of Application Profile ID and type of service, the flexibility that has improved mapping relations thus is for the refinement of follow-up AN type of service, expansion are provided convenience.
Present embodiment can come the type of service of IP message is discerned through external DPI module or the two kinds of RMs of PDSN that comprise the DPI function.
To first kind of mode of discerning the type of service of message; Specifically for PDSN with DPI function; PDSN according to the bearing mode (HDLC-Like mode or IP mode) of SO (Service Option) selection AN LinkFlow, identifies the type of service of IP message at first to each IP message that is received by the DS network of core net; Carry out the encapsulation of GRE message according to the type of service of identification then, promptly fill the extended attribute field according to the GRE extended attribute interface of customization.
To second kind of mode of discerning the type of service of message; Specifically for the situation of the external DPI module of AN; Receive the GRE message of RP link transmission in the DPI module after, the type of service of IP message in the identification GRE message is then according to the type of service of discerning; For the GRE message increases the GRE extended attribute, thereby traffic type information is carried to AN.
In the practical implementation process, as shown in Figure 2, the mode of the type of service of corresponding above-mentioned first kind of identification message, above-mentioned steps S101 comprises:
Step S1011 obtains the IP message through the DS network;
Step S1012, the type of service of identification IP message;
Step S1013 is packaged into the GRE message with the IP message;
Step S1014, the extended attribute of coding GRE message is carried at type of service the extended attribute field of GRE message.
As shown in Figure 3, the mode of the type of service of corresponding above-mentioned second kind of identification message, above-mentioned steps S101 comprises:
Step S1015 obtains the IP message through the DS network;
Step S1016 is packaged into the GRE message with the IP message;
Step S1017, the type of service of IP message in the identification GRE message;
Step S1018, the extended attribute of coding GRE message is carried at type of service in the extended attribute field of GRE message.
For the AN side; AN is after receiving the GRE message; Through resolving the GRE extended attribute; Analyze the Application Profile ID attribute that this GRE message carries, thereby obtain the corresponding service type information through the Application Profile ID value in the Application Profile ID attribute.
Need be noted that present embodiment has good instantaneity and autgmentability through the mode that the GRE extended attribute carries message traffic information.Since the new field information of extra increase in message, expense of transmitting on the corresponding increase link of meeting and recipient's (AN) packet parsing expense.Therefore, in order to reduce expense, in the PDSN side; When encapsulation GRE message; When expansion GRE extended attribute field, the IP message of default service type is configured to not have this GRE extended attribute field, the type of service that perhaps only AN need be handled is carried the information of type of service through the GRE extended attribute; And for the type of service that other AN do not have demand, then need not to carry business information through the GRE extended attribute.Thus, on the RP link, save the expense of transmission on the one hand, saved the expense of decoding GRE extended attribute on the other hand in the AN side.Present embodiment can improve the transmission performance of whole link and network at flow proportion in whole link of the message of the particular traffic type that the AN side need be obtained more after a little while.
Below with instantiation to two kinds of identification services type modes, specify present embodiment and the traffic type information of IP message carried the process to AN through the GRE extended attribute:
One, the PDSN that has the DPI function carries the mode to AN through the GRE extended attribute with the message traffic type information:
Shown in Fig. 4 a, Fig. 4 a is the transmission sketch map to message in the execution mode of the type of service of above-mentioned first kind of identification message.
The DS of core-network side (DiffServ) network is through carrying DSCP (Differentiated Services Code Point in the IP message; Differentiated services code points) realizes Differentiated Services; When application server or router were forwarded to the IP message of correspondence on the PDSN network element node, the DPI functional module of PDSN identified the upper-layer service type of IP message.
Whether PDSN carries out PPP (Point to Point Protocol to the IP message according to the SO type judgement of link; Point-to-point protocol) encapsulation; Form the message payload of GRE encapsulation; And by the encapsulation of PDSN completion GRE message, the type of service that PDSN identifies according to the DPI functional module, and the GRE extended attribute of coding Application Profile Identifier.
Shown in Fig. 4 a, the message of different service types uses different shadings to identify respectively.Wherein, the GRE extended attribute of 0x91 sign message is Application Profile Identifier, and is last extended attribute in the GRE extended attribute, and 0x02 indicates that the length of this GRE extended attribute is 2 bytes, 0x00,0x0 *Indicate the different service types of message, be respectively the business of 02/03 type for the thin/type of service of fine grid like shading.
As previously mentioned; The message that does not have the type of service of obtaining the type of service demand for the message or the AN side of the default service type message of oblique line shading sign (in this example for); Then can not encode and (be depicted as NULL like Fig. 4 a to this GRE extended attribute; Promptly empty), and then reduce the transport overhead of RP link and the decoding expense of AN side.
After AN receives the GRE message on the RP link; The head of decoding GRE message; GRE message for not carrying the GRE extended attribute is handled according to the message of default service type; And for the GRE message that has carried the GRE extended attribute, the corresponding type of service that is then identified according to Application Profile Identifier attribute is handled.
Two, external DPI functional module is carried the mode to AN through the GRE extended attribute with the message traffic type information:
Shown in Fig. 4 b, Fig. 4 b is the transmission sketch map to message in the execution mode of the type of service of above-mentioned second kind of identification message.
The DS network of core-network side is realized Differentiated Services through in the IP message, carrying DSCP; When application server or router are forwarded to the IP message of correspondence on the PDSN network element node; PDSN carries out the form encapsulation to the IP message according to RP link SO type, and forms the GRE message.
After being positioned at external DPI functional module on the RP link and receiving the GRE message; Identify the type of service of IP message; And in the GRE message, increase GRE extended attribute part; According to the GRE extended attribute of the type of service that identifies coding Application Profile Identifier, it is identical that further part and the PDSN with DPI function carry execution mode.
AN receives the GRE message on the RP link; The head of decoding GRE message; Handle according to the message of default service type for the message that does not carry the GRE extended attribute; And for the message that has carried the GRE extended attribute, then handle according to the corresponding type of service of Application Profile Identifier attribute-bit.
Present embodiment utilizes the GRE extended attribute territory in the GRE agreement of message of RP link bearer between PDSN and the AN; New GRE extended attribute through customization carries the traffic type information of message to AN; Strengthen flexibility and the extensibility of AN, reduced system's chain of command signaling consumption simultaneously.
As shown in Figure 5, one embodiment of the invention proposes a kind of the expansion based on GRE and carries the device that the message traffic type is given AN, and comprising: type of service is obtained package module 401 and sending module 402, wherein:
Type of service is obtained package module 401, is used to obtain the type of service of IP message, and type of service is carried at the extended attribute field of GRE message, and the GRE message is packaged with the IP message;
Sending module 402 is used for that the GRE message is carried on the RP link and sends to AN.
The GRE packet transmission device can be for having the PDSN of DPI function in the present embodiment; Perhaps comprise PDSN and the external DPI module that is connected with PDSN.
Particularly; Carry out transfer of data through the RP link between PDSN and the AN in the present embodiment; Its message transmissions is based on the GRE agreement; After obtaining package module 401 and carry out the GRE encapsulation through type of service from the IP message of core-network side DS network, form the GRE message, be carried on the RP link and send to AN through sending module 402.Wherein: the structure of the GRE message that is packaged into is as above shown in the table 1:
In the last table 1, GRE Header: be GRE protocol fields configuration section, comprise GRE Key (being used to identify the GRE link), GRE sequence number (being used to identify the ordinal relation of GRE message on the link) etc.
User Traffic: be user's upper layer application message payload.
Attributes: be the GRE extended attribute; Through customizing optional GRE extended attribute; After external DPI module or PDSN with DPI function identify the type of service of IP message; Can be in the GRE extended attribute of the GRE message that encapsulates, the type of service of arranging according to the type of service mark of the IP message of discerning identifies, thereby the traffic type information of IP message is carried to AN.
The rule of definition extended attribute is as above shown in the table 2 in the GRE agreement:
Wherein, whether this GRE extended attribute of E domain identifier is last GRE extended attribute, if E is 1, then identifying this GRE extended attribute is last GRE extended attribute, if E is 0, then identifying this GRE extended attribute is not last GRE extended attribute.
The type of AttributeType domain identifier GRE extended attribute; The property value length of Length domain identifier GRE extended attribute, the property value of AttributeValue domain identifier GRE extended attribute.
The needs that present embodiment carries according to traffic type information have customized the GRE extended attribute of Application Profile Identifier in the GRE of GRE message extended attribute field, as above shown in the table 3:
In the above-mentioned table 3, Type has defined the type of GRE extended attribute, is defined as 0x11 in the present embodiment; Length is the length of property value part, and the agreement classification situation of normative reference ProfileID is defined as 2 byte lengths in the present embodiment, and its configurable Application Profile ID can satisfy the needs that different service types distributes; Application Profile ID has identified the type of service of the IP message of this GRE encapsulation.
In addition; For external DPI module or have between PDSN and the AN of DPI function and need to different service types; Application Profile ID to concrete clearly arranges; So that when AN resolves the GRE extended attribute, can the Application Profile ID that parse correctly be mapped to the corresponding service type.For example: the equal configured voice type of service in both sides, corresponding A pplication Profile ID is 0003H, game service type corresponding A pplication Profile ID is 0004H etc.Secondly, all configurable at PDSN and AN both sides for the corresponding relation of Application Profile ID and type of service, the flexibility that has improved mapping relations thus is for the refinement of follow-up AN type of service, expansion are provided convenience.
Present embodiment can come the type of service of IP message is discerned through external DPI module or the two kinds of RMs of PDSN that comprise the DPI function.
To first kind of mode of discerning the type of service of message; Specifically for PDSN with DPI function; PDSN according to the bearing mode (HDLC-Like mode or IP mode) of SO (Service Option) selection AN LinkFlow, identifies the type of service of IP message at first to each IP message that is received by the DS network of core net; Carry out the encapsulation of GRE message according to the type of service of identification then, promptly fill the extended attribute field according to the GRE extended attribute interface of customization.
To second kind of mode of discerning the type of service of message; Specifically for the situation of the external DPI module of AN; Receive the GRE message of RP link transmission in the DPI module after, the type of service of IP message in the identification GRE message is then according to the type of service of discerning; For the GRE message increases the GRE extended attribute, thereby traffic type information is carried to AN.
For the AN side; AN is after receiving the GRE message; Through resolving the GRE extended attribute; Analyze the Application Profile ID attribute that this GRE message carries, thereby obtain the corresponding service type information through the Application Profile ID value in the Application Profile ID attribute.
Need be noted that present embodiment has good instantaneity and autgmentability through the mode that the GRE extended attribute carries message traffic information.Since the new field information of extra increase in message, expense of transmitting on the corresponding increase link of meeting and recipient's (AN) packet parsing expense.Therefore, in order to reduce expense, in the PDSN side; When encapsulation GRE message; When expansion GRE extended attribute field, the IP message of default service type is configured to not have this GRE extended attribute field, the type of service that perhaps only AN need be handled is carried the information of type of service through the GRE extended attribute; And for the type of service that other AN do not have demand, then need not to carry business information through the GRE extended attribute.Thus, on the RP link, save the expense of transmission on the one hand, saved the expense of decoding GRE extended attribute on the other hand in the AN side.Present embodiment can improve the transmission performance of whole link and network at flow proportion in whole link of the message of the particular traffic type that the AN side need be obtained more after a little while.
As shown in Figure 6, in the practical implementation process, corresponding first kind of type of service RM, above-mentioned type of service is obtained package module 401 and is comprised: acquiring unit 4011, recognition unit 4012, encapsulation unit 4013 and coding unit 4014, wherein:
Acquiring unit 4011 is used for obtaining the IP message through the DS network;
Recognition unit 4012 is used to discern the type of service of IP message;
Encapsulation unit 4013 is used for the IP message is packaged into the GRE message;
Coding unit 4014, the extended attribute of the GRE message that is used to encode is carried at type of service the extended attribute field of GRE message.
Corresponding second kind of type of service RM, above-mentioned acquiring unit 401 also is used for obtaining the IP message through the DS network;
Above-mentioned encapsulation unit 403 also is used for the IP message is packaged into the GRE message;
Above-mentioned recognition unit 402 is used for discerning the type of service of GRE message IP message;
Above-mentioned coding unit 404, the extended attribute of the GRE message that also is used to encode is carried at type of service in the extended attribute field of GRE message.
As shown in Figure 7, one embodiment of the invention proposes a kind of the expansion based on GRE and carries the system that the message traffic type is given AN, comprising: AN601, GRE packet transmission device 602; Wherein:
GRE packet transmission device 602 is used to obtain the type of service of IP message, and type of service is carried at the extended attribute field of GRE message, and the GRE message is packaged with the IP message; And the GRE message is carried on the RP link sends to AN601;
AN601 is used to receive the GRE message of the type of service that carries the IP message, and the GRE message is resolved, and obtains the type of service of IP message.
Wherein, GRE packet transmission device 602 can be for having the PDSN of DPI function; Perhaps this GRE packet transmission device comprises PDSN and the external DPI module that is connected with PDSN.
GRE packet transmission device 602 in the present embodiment can be the device described in the foregoing description, and its internal structure and functional characteristics repeat no more at this.
The embodiment of the invention is expanded based on GRE and is carried method, the Apparatus and system that the message traffic type is given AN; Utilize the GRE extended attribute territory in the GRE agreement of message of RP link bearer between PDSN and the AN; New GRE extended attribute through customization carries the traffic type information of message to AN; Strengthen flexibility and the extensibility of AN, reduced system's chain of command signaling consumption simultaneously.
The above is merely the preferred embodiments of the present invention; Be not so limit claim of the present invention; Every equivalent structure or flow process conversion that utilizes specification of the present invention and accompanying drawing content to be done; Or directly or indirectly be used in other relevant technical field, all in like manner be included in the scope of patent protection of the present invention.

Claims (10)

1. one kind is carried the method that the message traffic type is given Access Network AN based on generic route encapsulation GRE expansion, it is characterized in that, comprising:
Obtain the type of service of IP message, and said type of service is carried at the extended attribute field of GRE message, said GRE message is packaged with said IP message;
Said GRE message is carried on the RP link sends to AN.
2. method according to claim 1 is characterized in that, the said type of service of obtaining the IP message, and the step that said type of service is carried at the extended attribute field of GRE message comprised:
Obtain the IP message through the DS network;
Discern the type of service of said IP message;
Said IP message is packaged into the GRE message;
The encode extended attribute of said GRE message is carried at said type of service the extended attribute field of said GRE message.
3. method according to claim 1 is characterized in that, the said type of service of obtaining the IP message, and the step that said type of service is carried at the extended attribute field of GRE message comprised:
Obtain the IP message through the DS network;
Said IP message is packaged into the GRE message;
Discern the type of service of IP message in the said GRE message;
The encode extended attribute of said GRE message is carried at said type of service in the extended attribute field of said GRE message.
4. according to claim 1,2 or 3 described methods, it is characterized in that said type of service is the type of service that said AN need handle.
5. one kind is carried the device that the message traffic type is given AN based on GRE expansion, it is characterized in that, comprising:
Type of service is obtained package module, is used to obtain the type of service of IP message, and said type of service is carried at the extended attribute field of GRE message, and said GRE message is packaged with said IP message;
Sending module is used for that said GRE message is carried on the RP link and sends to AN.
6. device according to claim 5 is characterized in that, said type of service is obtained package module and comprised:
Acquiring unit is used for obtaining the IP message through the DS network;
Recognition unit is used to discern the type of service of said IP message;
Encapsulation unit is used for said IP message is packaged into the GRE message;
Coding unit, the extended attribute of the said GRE message that is used to encode is carried at said type of service the extended attribute field of said GRE message.
7. device according to claim 6 is characterized in that,
Said acquiring unit also is used for obtaining the IP message through the DS network;
Said encapsulation unit also is used for said IP message is packaged into the GRE message;
Said recognition unit is used for discerning the type of service of said GRE message IP message;
Said coding unit, the extended attribute of the said GRE message that also is used to encode is carried at said type of service in the extended attribute field of said GRE message.
8. one kind is carried the system that the message traffic type is given AN based on GRE expansion, it is characterized in that, comprising: AN, GRE packet transmission device; Wherein:
Said GRE packet transmission device is used to obtain the type of service of IP message, and said type of service is carried at the extended attribute field of GRE message, and said GRE message is packaged with said IP message; And said GRE message is carried on the RP link sends to AN;
Said AN is used to receive the said GRE message of the type of service that carries the IP message, and said GRE message is resolved, and obtains the type of service of said IP message.
9. system according to claim 8 is characterized in that, said GRE packet transmission device comprises: the PDSN that has the DPI function; Perhaps said GRE packet transmission device comprises PDSN and the external DPI module that is connected with said PDSN.
10. system according to claim 8 is characterized in that, said GRE packet transmission device is each described device in the claim 5,6 or 7.
CN2011103786366A 2011-11-24 2011-11-24 Method for carrying message service type to AN based on GRE expansion, apparatus thereof and system thereof Pending CN102413049A (en)

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