CN101848195A

CN101848195A - Light-weight dual-stack negotiation processing method and device, communication device and communication system

Info

Publication number: CN101848195A
Application number: CN200910081010A
Authority: CN
Inventors: 张伟; 陈育华; 顾亮; 李宏
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2009-03-27
Filing date: 2009-03-27
Publication date: 2010-09-29

Abstract

The invention discloses a light-weight dual-stack negotiation processing method and a device, a communication device and a communication system, wherein the light-weight dual-stack negotiation processing method comprises the following steps: acquiring DS-lite capability information of an access service network ASN and a terminal, and determining the DS-lite operating mode of the terminal according to the DS-lite capability information of the ASN and the terminal; and the light-weight dual-stack negotiation processing device comprises an acquisition module used for acquiring the DS-lite capability information of the ASN and the terminal and a first determination module used for determining the DS-lite operating mode of the terminal according to the DS-lite capability information of the ASN and the terminal. The embodiment of the invention can determine the DS-lite operating mode adopted by an MS and ensures that each functional entity in the communication system acquires the DS-lite operating mode of the MS.

Description

Light-weight dual-stack negotiation processing method and device, communication equipment and communication system

Technical field

The present invention relates to the communication technology, especially a kind of light-weight dual-stack negotiation processing method and device, communication equipment and communication system.

Background technology

Microwave interoperability (Worldwide Interoperability for Microwave Access is inserted in the whole world, hereinafter to be referred as: WiMAX) be a wireless metropolitan area network technology based on IEEE 802.16 standards, its have message transmission rate higher, dispose stronger safer, the advantage such as area coverage is wider of more flexible, configuration retractility.As shown in Figure 1, be a network architecture schematic diagram of WiMAX system.Referring to Fig. 1, the WiMAX system is mainly by user terminal (Mobile Subscribe Station, hereinafter to be referred as: MS), access service network (Access Service Network, hereinafter to be referred as: ASN) and connection service network (Connectivity Service Network, hereinafter to be referred as: CSN) three parts are formed.Wherein, ASN comprise the base station (Base Station, hereinafter to be referred as: BS) and Access Service Network Gateway (ASN Gateway, hereinafter to be referred as: ASN GW); CSN mainly comprise prepaid server (Prepaid Server, hereinafter to be referred as: PPS) and authentication and authorization charging server (Authentication, Authorization and Accounting Server, hereinafter to be referred as: AAA) wait logic entity.

In recent years, there is the 4th version Internet protocol (Internet Protocol version 4 in the network technology, hereinafter to be referred as: IPv4) and this Internet protocol of sixth version (Internet Protocol version 6, hereinafter to be referred as: IPv6), the latter is the former upgraded version.At IPv4 in the process of IPv6 transition, because IPv4 address shortage, how being embodied as in the network user provides the IPv4 service and needn't distribute publicly-owned IPv4 address for it, guarantees the back compatible of IPv6 simultaneously, becomes an important issue in the present WiMAX research.

Light-weight dual-stack (Dual-stack lite, hereinafter to be referred as: DS-lite) be a kind of solution that proposes by IETF at IPv4 address shortage in IPv4 and the IPv6 coexistence problems.DS-lite is based on carrying IPv4 data (IPv4over IPv6) tunnel and IPv4 network address translation (Network Address Translation by the IPv6 agreement, hereinafter to be referred as: NAT) technology, can needn't distribute publicly-owned IPv4 address for it for the user provides the IPv4 service.Particularly, dispose other NAT device of carrier-class at network side, that is: operation level network address translation (carrier grade NAT, hereinafter to be referred as: CGN), between DS-lite client and CGN, set up IPv4over IPv6 tunnel, the outer source address in the tunnel of upstream data is the publicly-owned IPv6 address of DS-lite client, and the internal layer source address is well-known (well know) the IPv4 address with route meaning, and all DS-lite clients all can be shared this IPv4 address.CGN is after peelling off outer IPv6 tunnel, with the well-known IPv4 address transition of internal layer is routable IPv4 address, thereby realize the normal route of DS-lite client ip v4 data, make the DS-lite client under the situation that only has publicly-owned IPv6 address, obtain the IPv4 service.

The application of DS-lite in the WiMAX network comprises client (Client) and agency's (Proxy) two kinds of mode of operations.As shown in Figure 2, be a network architecture schematic diagram of the WiMAX system that uses DS-lite.If MS itself has the DS-lite ability, can adopt client mode, the encapsulation by MS oneself is responsible for IPv4over IPv6 tunnel when MS has the IPv4 business demand, will send to network side by ASN after the IPv6 address encapsulation of IPv4 data with oneself.If MS itself does not have the DS-lite ability, then can adopt the DS-lite proxy mode, promptly in ASN, dispose logical functional entity DS-lite agency, after the IPv4 data of MS arrive ASN, undertaken by the DS-lite agency who is arranged in ASN GW sending after the encapsulation in IPv4over IPv6 tunnel, MS needn't perceive the DS-lite technology.Under the Proxy pattern, MS can be a dual stack node, also can be single stack (IPv4-only) node of IPv4.

As shown in Figure 2, DS-lite is applied to the mode of operation difference that the WiMAX network is taked, and the operation that each functional entity is taked is just different, and the required information of MS and network side is also different.For example, when taking DS-lite Client pattern, network side need be handed down to MS with the CGN address, to carry out the outer destination address of IPv4over IPv6 tunnel upstream data encapsulation as MS.And when taking the DS-lite proxy mode, network side then needs MS is handed down in well-known address, as the IPv4 address of MS, impels MS directly to send the IPv4 data to the Access Network side, and needn't the aware networks side whether adopt the DS-lite proxy mode.In addition, the WiMAX network side whether support that DS-lite also is related to DS-lite mechanism can trouble-free operation.Therefore, when DS-lite was applied to the WiMAX network, the problem that at first needs to solve was how to finish the negotiation of MS and network side, to determine the DS-lite mode of operation and to make each functional entity obtain information needed.

But, in realizing process of the present invention, the inventor finds still not exist in the prior art and determines whether the WiMAX network supports the technology of DS-lite, there is not MS and network side Negotiation Technology about the DS-lite mode of operation yet, make that each functional entity can't be known required information in the WiMAX network, cause the DS-lite technology can't normally run on the WiMAX network, can't satisfy in the WiMAX network that the MS needs obtain IPv6 and IPv4 service simultaneously and the WiMAX network can only provide publicly-owned IPv6 address and publicly-owned IPv4 can not be provided the demand of address.

Summary of the invention

The purpose of the embodiment of the invention is: a kind of light-weight dual-stack negotiation processing method and device, communication equipment and communication system are provided, determine whether communication network supports DS-lite technology and the DS-lite mode of operation of being taked, make each related functional entities in the communication network know the DS-lite ability and the DS-lite mode of operation of communication network.

A kind of light-weight dual-stack negotiation processing method that the embodiment of the invention provides comprises:

Obtain the DS-lite ability information of access service network ASN and terminal;

According to the DS-lite ability information of ASN and terminal, determine the DS-lite mode of operation of described terminal.

A kind of light-weight dual-stack that the embodiment of the invention provides is handled device through consultation, comprising:

Acquisition module is used to obtain the DS-lite ability information of ASN and terminal;

First determination module is used for the DS-lite ability information according to described ASN and terminal, determines the DS-lite mode of operation of described terminal.

A kind of communication equipment that the embodiment of the invention provides comprises:

First receiver module is used to receive the DS-lite ability information of this ASN that ASN reports;

The 3rd determination module is used for the DS-lite ability information according to described ASN, determines the DS-lite support policy of network side;

First sending module is used for the DS-lite support policy to described ASN transmission network side.

The another kind of communication equipment that the embodiment of the invention provides comprises:

Second sending module is used for reporting to CSN the DS-lite ability information of this communication equipment;

Second receiver module is used to receive the DS-lite support policy of the network side that described CSN sends.

Another communication equipment that the embodiment of the invention provides comprises:

The first communication service processing module, be used for and ASN between set up the SF of IPv4 business or the SF of IPv6 business;

The 3rd sending module is used for sending the CGN address request information to described ASN;

The 3rd receiver module is used to receive the CGN address information that well-known IPv4 address that described ASN issues and described ASN issue according to described CGN address request information.

Second memory module is used for the DS-lite ability information of storage terminal;

Detection module is used for the DS-lite ability information according to described terminal, detects described terminal and whether has the DS-lite ability;

The 3rd sending module, be used for testing result, when described terminal does not have the DS-lite ability, send the SF foundation request that the CS type is IPv4 to ASN according to described detection module, when described terminal has the DS-lite ability, send the SF foundation request that the CS type is IPv6 to described ASN;

The 3rd receiver module, be used for after setting up the SF of IPv4 business between described first communication service processing module and the ASN, receive the CGN address information that described ASN issues, after setting up the SF of IPv6 business between described first communication service processing module and the ASN, receive the well-known IPv4 address that described ASN issues.

Also a kind of communication equipment that the embodiment of the invention provides comprises:

The second communication Service Processing Module, be used for and ASN between set up the SF and the DP of GPCS type;

The 3rd sending module, be used for behind the SF and DP that set up the GPCS type between second communication Service Processing Module and the ASN, testing result according to described detection module, when described terminal has the IPv4 business demand and has the DS-lite ability, send the CGN address to described ASN and obtain solicited message, when described terminal had the IPv4 business demand but do not have the DS-lite ability, the SF by the GPCS type sent the IPv4 business datum to described ASN;

The 3rd receiver module is used to receive described ASN and obtains the CGN address information that solicited message issues according to described CGN address, and receives the well-known IPv4 address that issues behind the described ASN activation DS-lite agent functionality.

A kind of communication system that the embodiment of the invention provides, comprise terminal and ASN, comprise that also light-weight dual-stack handles device through consultation, be used to obtain the DS-lite ability information of described ASN and described terminal, and, determine the DS-lite mode of operation of described terminal according to the DS-lite ability information of described ASN and described terminal.

The light-weight dual-stack negotiation processing method and the device that provide based on the above embodiment of the present invention, communication equipment and communication system, can be according to ASN, the DS-lite ability information of CSN and terminal, determine the DS-lite ability of network side, thereby determine whether communication network supports the DS-lite technology, and the DS-lite mode of operation of definite terminal, make each functional entity in the communication network can know the DS-lite ability of communication network and the DS-lite mode of operation information of terminal, thereby satisfy the demand that the terminal needs use IPv6 and IPv4 to serve simultaneously in the communication network, realize the transition of IPv4, effectively provide the user needed service to the user to IPv6.

Below by drawings and Examples, technical scheme of the present invention is described in further detail.

Description of drawings

Fig. 1 is a network architecture schematic diagram of WiMAX system;

Fig. 2 is a network architecture schematic diagram of the WiMAX system of application DS-lite;

Fig. 3 is the flow chart of DS-lite negotiation processing method embodiment one of the present invention;

Fig. 4 is the flow chart of DS-lite negotiation processing method embodiment two of the present invention;

Fig. 5 is the flow chart of DS-lite negotiation processing method embodiment three of the present invention;

Fig. 6 is the flow chart of DS-lite negotiation processing method embodiment four of the present invention;

Fig. 7 is the flow chart of DS-lite negotiation processing method embodiment five of the present invention;

Fig. 8 is the flow chart of DS-lite negotiation processing method embodiment six of the present invention;

Fig. 9 is the flow chart of DS-lite negotiation processing method embodiment seven of the present invention;

Figure 10 is the flow chart of DS-lite negotiation processing method embodiment eight of the present invention;

Figure 11 handles the structural representation of device embodiment through consultation for DS-lite of the present invention;

Figure 12 is the structural representation of communication equipment embodiment one of the present invention;

Figure 13 is the structural representation of communication equipment embodiment two of the present invention;

Figure 14 is the structural representation of communication equipment embodiment three of the present invention;

Figure 15 is the structural representation of communication equipment embodiment four of the present invention;

Figure 16 is the structural representation of communication equipment embodiment five of the present invention;

Figure 17 is the structural representation of communication equipment embodiment six of the present invention;

Figure 18 is the structural representation of communication equipment embodiment seven of the present invention;

Figure 19 is the structural representation of communication equipment embodiment eight of the present invention;

Figure 20 is the structural representation of communication equipment embodiment nine of the present invention;

Figure 21 is the structural representation of communication equipment embodiment ten of the present invention;

Figure 22 is the structural representation of communication equipment embodiment 11 of the present invention;

Figure 23 is the structural representation of communication equipment embodiment 12 of the present invention;

Figure 24 is the structural representation of communication equipment embodiment 13 of the present invention;

Figure 25 is the structural representation of communication equipment embodiment 14 of the present invention;

Figure 26 is the structural representation of communication equipment embodiment 15 of the present invention;

Figure 27 is the structural representation of communication equipment embodiment 16 of the present invention;

Figure 28 is the structural representation of communication system embodiment of the present invention.

Embodiment

A kind of DS-lite negotiation processing method that the embodiment of the invention provides comprises: the DS-lite ability information of obtaining access service network ASN and terminal; According to the DS-lite ability information of ASN and terminal, determine the DS-lite mode of operation of described terminal.After the DS-lite mode of operation of MS was determined, each functional entity in the communication network can be known information needed, was specially under the DS-lite client mode, and MS gets access to the IPv6 address of CGN and the IPv6 address of self; Under the DS-lite proxy mode, MS gets access to wellknow IPv4 address, and ASN gets access to the IPv6 address of MS.

Concrete, can determine the DS-lite support policy of network side according to the DS-lite ability information of ASN and CSN, and then, determine the DS-lite mode of operation of MS according to the DS-lite ability information of the DS-lite support policy and the MS of network side.

MS, when ASN and CSN consult, if communication network is supported DS-lite, and the DS-lite mode of operation that MS taked is the DS-lite client mode, network side is handed down to MS with the CGN address information, to carry out the outer destination address of IPv4over IPv6 tunnel upstream data encapsulation as MS, so that MS obtains the IPv4 business according to this CGN address, wherein the CGN address information can be the publicly-owned IPv6 address of CGN, or the domain name of CGN, can also be other any information that can be associated with the IPv6 address of CGN, network side described in the various embodiments of the present invention all has above identical connotation to CGN address information or CGN address that MS issues.If the DS-lite mode of operation that MS taked is the DS-lite proxy mode, network side is handed down to MS with well-known IPv4 address, MS just can be with the IPv4 address of this well-known IPv4 address as MS, directly send the IPv4 business datum to ASN, and needn't the aware networks side whether adopt the DS-lite proxy mode.After DS-lite handles through consultation, MS can send business datum according to selected DS-lite mode of operation, do not have under the situation of publicly-owned IPv4 address having only publicly-owned IPv6 address, obtain the IPv4 service, thereby satisfy communication network publicly-owned IPv6 can only be provided the address, and terminal need be obtained the demand of IPv6 and IPv4 service simultaneously, solves the problem that exhaust publicly-owned IPv4 address.

Various embodiments of the present invention are that example describes with the WiMAX system.But the embodiment of the invention is not limited to the WiMAX system.For other communication system, for example: the third generation (The Third Generation, hereinafter to be referred as: 3G) communication system and WLAN (wireless local area network) (Wireless Local Access Network, hereinafter to be referred as: WLAN) system etc. is same is suitable for.Certification authority server in the 3G communication system (Home Subscriber Server, hereinafter to be referred as: HSS) be equivalent to ownership place AAA (Home AAA in the WiMAX system, hereinafter to be referred as: HAAA), and the radio network controller in the 3G communication system (Radio Network Controller, hereinafter to be referred as: RNC) be equivalent to ASN GW in the WiMAX system.

In the various embodiments of the present invention, MS when ownership place, CSN be MS ownership place CSN (Home CSN, hereinafter to be referred as: HCSN).Accordingly, determine the DS-lite support policy of network side, also promptly: determine whether network side supports that DS-lite comprises: ASN reports the DS-lite ability information of this ASN to HCSN; HCSN determines to license to network side according to the DS-lite ability information of ASN, comprises the DS-lite support policy of this ASN, and returns the DS-lite support policy that this licenses to ASN to ASN.If roaming taken place in MS, then the CSN in the various embodiments of the present invention also comprise MS visit ground visit ground CSN (Visited CSN, hereinafter to be referred as: VCSN).ASN carries out information interaction by VCSN and HCSN, and VCSN also needs to report to HCSN the DS-lite ability information of this VCSN.Accordingly, HCSN determines the DS-lite support policy of network side according to the DS-lite ability information of ASN and VCSN.

As shown in Figure 3, be the flow chart of DS-lite negotiation processing method embodiment one of the present invention, among this embodiment, can determine the DS-lite support policy of network side by the HAAA among the HCSN.It specifically may further comprise the steps:

Step 101, ASN sends to AAA agency among the VCSN with the DS-lite ability information of this ASN.

Step 102, AAA among VCSN agency sends to HAAA among the HCSN with the DS-lite ability information of the DS-lite ability information of this VCSN and ASN.

Step 103, the HAAA among the HCSN determines the DS-lite support policy of network side according to the DS-lite ability information of ASN and VCSN, the DS-lite support policy of this network side is used to represent whether network side supports DS-lite.

Wherein, the DS-lite support policy that licenses to network side can comprise DS-lite support policy that licenses to HCSN and the DS-lite support policy that licenses to VCSN.

Particularly, the DS-lite ability information of ASN can for: do not support DS-lite or support DS-lite but do not possess the DS-lite agent capability or support DS-lite and possess the DS-lite agent capability; The DS-lite ability information of VCSN can for: CGN can not be provided, maybe can provide CGN.Accordingly, the DS-lite support policy that licenses to network side is specifically as follows: can not use DS-lite, maybe can use DS-lite but can not enable the DS-lite agent functionality, maybe can use DS-lite and can enable the DS-lite agent functionality.HAAA specifically in the following way pattern determine the DS-lite support policy of network side:

If the DS-lite ability information that ASN reports is not for supporting DS-lite, regardless of the DS-lite ability information of VCSN, HAAA determines that the DS-lite support policy of network side is for can not use DS-lite;

If the DS-lite ability information that ASN reports is for supporting DS-lite, but do not possess the DS-lite agent capability, then HAAA determine network side the DS-lite support policy for using DS-lite but can not enable the DS-lite agent functionality.At this moment, if the DS-lite ability information of VCSN is for providing CGN, then the DS-lite support policy of network side comprises that also VCSN issues the CGN address information to ASN; Otherwise if the DS-lite ability information of VCSN is not for providing CGN, then the DS-lite support policy of network side does not comprise that VCSN issues the CGN address information to ASN;

If the DS-lite ability information that ASN reports is for supporting DS-lite and possess the DS-lite agent capability that then HAAA determines that the DS-lite support policy of network side is for can use DS-lite and can enable the DS-lite agent functionality.At this moment, if the DS-lite ability information of VCSN is for providing CGN, then the DS-lite support policy of network side comprises that also VCSN issues the CGN address information to MS; Otherwise if the DS-lite ability information of VCSN is not for providing CGN, then the DS-lite support policy of network side does not comprise that VCSN issues the CGN address information to MS.

Step 104, the HAAA among the HCSN sends to AAA agency among the VCSN with the DS-lite support policy of network side.

Step 105, the AAA agency among the VCSN is transmitted to ASN with the DS-lite support policy of network side.

Particularly, in step 101 and the step 102, ASN and VCSN can be carried at the DS-lite ability information and insert among the request message AAA Access Request, send the DS-lite ability information by inserting request message.In step 104 and the step 105, HCSN and VCSN can be carried at by the DS-lite support policy with network side and accept among the message AAA Access Accept, accept the DS-lite support policy that message sends network side by access.In existing signaling, carry DS-lite ability information and DS-lite support policy between ASN, VCSN and the HCSN, can not increase extra signaling, therefore can not increase offered load.

In addition, among the embodiment shown in Figure 3, with MS roaming taking place is that example is illustrated.If MS roams, then, do not need the associative operation of VCSN in the above-mentioned flow process owing to do not comprise VCSN, that is: ASN directly and HCSN mutual.Step 101 is specially with the operation of step 102: ASN directly sends the access request message of the DS-lite ability information that has this ASN to HCSN.Accordingly, the operation of step 104 and step 105 is specially: the access that the HAAA among the HCSN will carry network side DS-lite support policy is accepted message and is directly sent to ASN.

Among following each embodiment of the present invention, be that example describes also with the relevant information of in existing signaling, carrying or implicit expression transmission DS-lite consults.In addition, various embodiments of the present invention can also be carried in other existing signaling, implicit expression sends the relevant information that DS-lite consults, and perhaps also can directly send the relevant information that DS-lite consults.

Above-mentioned HAAA shown in Figure 3 determines that the flow process of handling through consultation of network side DS-lite support policy belongs to network behavior, and is not related with a certain MS, in the time of can occurring in the network initial configuration that does not have the MS participation.Therefore, negotiation processing method shown in Figure 3 also can be referred to as network side DS-lite negotiation processing method.In addition, HAAA determines handling flow process through consultation and also can occurring in the process of MS access network of network side DS-lite support policy, by the DS-lite ability information that network information carries ASN and VCSN of going into of MS.Handle flow process through consultation by DS-lite shown in Figure 3, can determine network side, comprise ASN, VCSN and HCSN, can support for the user provides DS-lite, just allow HCSN know the DS-lite ability of ASN and VCSN, so that determine whether to allow MS to use DS-lite.Therefore, to be exactly ASN and VCSN report HCSN with oneself DS-lite ability information to the process that network side DS-lite handles through consultation, determine the DS-lite support policy of network side in view of the above by HCSN, authorize VCSN and ASN can use the process of which DS-lite function.

According to one embodiment of present invention, MS is when access network, the DS-lite ability information of this MS is reported ASN, ASN is in the access network verification process of MS, the DS-lite ability information of MS is reported HCSN, learn the DS-lite support policy of network side by HCSN after, DS-lite ability according to MS, the ability of the DS-lite support policy of network side and described CSN distributing IP v4 address, determine whether to authorize this MS to use the DS-lite technology to obtain the IPv4 business, and when authorizing MS to use the DS-lite technology, determine that the DS-lite mode of operation that this MS adopts is DS-lite client mode or DS-lite proxy mode.At last, the DS-lite mode of operation information with definite MS is handed down to ASN and/or MS in the implicit expression mode.Wherein, the ability information of the DS-lite of MS is specifically as follows: support DS-lite or do not support DS-lite.

The foundation of the DS-lite mode of operation negotiation result that issues MS of implicit expression is: DS-lite client mode and DS-lite proxy mode have an important difference.When adopting the DS-lite proxy mode, there is an IPv4 service flow (Service FloW between MS and the ASN, hereinafter to be referred as: SF), certainly, the IPv6SF that can also have other between MS and the ASN, the IPv4 data of MS mail to ASN in advance in the carrying of this IPv4SF, carried out the tunnel encapsulation of IPv4over IPv6 by the DS-lite agency who is arranged in ASN GW.At this moment, MS and be indifferent to the Access Network side and whether enabled the DS-lite agent functionality.And when adopting the DS-lite client mode, only having IPv6SF between MS and the ASN, that is: MS oneself carries out the tunnel encapsulation of IPv4over IPv6 with the IPv4 data, makes the IPv4 data send to ASN via the IPv4overIPv6 tunnel on IPv6SF carries.

Therefore, HCSN with the DS-lite mode of operation negotiation result of MS with the concrete grammar that the implicit expression mode is issued to ASN and/or MS is: when HCSN determines that MS adopts the DS-lite client mode to obtain the IPv4 business, the Convergence Sublayer that presets SF (the Convergence Sublayer that HCSN will issue, hereinafter to be referred as: CS) type is set to IPv6, when authorizing ASN to adopt the DS-lite proxy mode to provide IPv4 professional for MS, the CS type of the SF that HCSN issues is set to IPv4.No matter which kind of DS-lite mode of operation MS takes, and also no matter the node type of MS is two stacks or the single stack of IPv4, and HCSN issues a publicly-owned IPv6 address or a prefix for MS simultaneously.HCSN is after ASN issues IP address, CGN address information and SF information, and ASN is according to the DS-lite mode of operation of CS type that presets SF and IP address class type identification MS.Be specially: only issued the IPv6 address without any the IPv4 address for MS if ASN finds HCSN, do not specify any the 4th version DHCP (Dynamic Host Configuration Protocol Version 4 yet, hereinafter to be referred as: server address DHCPv4), but it is IPv4 that certain bar presets the CS type of stream, and the network side DS-lite support policy of before receiving is for enabling the DS-lite agency, and then ASN enables the DS-lite agency for this MS.Otherwise, if ASN finds that HCSN is that MS has issued the IPv6 address, but all CS types that preset stream all are IPv6, then ASN is after the CGN request that receives the MS transmission, and whether the network side DS-lite support policy of receiving before detecting can use the DS-lite function, if can enable the DS-lite function, then ASN issues the CGN address information to MS, show to MS and can enable the DS-lite client that MS can use this CGN address information to carry out IPv4over IPv6 encapsulation afterwards, so that obtain the IPv4 business.When authorizing ASN to adopt the DS-lite proxy mode to provide IPv4 professional for MS, after ASN activates the DS-lite agent functionality, also issue well-known IPv4 address to MS, so that MS adopts the source address of this well-known IPv4 address as up IPv4 packet, and and be indifferent to network side and whether enable the DS-lite agent functionality.

As shown in Figure 4, be the flow chart of DS-lite negotiation processing method embodiment two of the present invention, among this embodiment, can determine the DS-lite mode of operation of user terminal by the HAAA among the HCSN.It specifically may further comprise the steps:

Step 201, MS is reported to BS among the ASN with the DS-lite ability information of this MS by basic capability negotiating request message SBC_REQ when access network.

Step 202, BS is reported to ASN GW with the DS-lite ability information of MS by MS networking request message MS_PreAttachment_Request.

Step 203, MS begins the access network verification process.

Step 204, ASN sends to AAA agency among the VCSN by inserting request message AAAAccess Request with the DS-lite ability information of MS in the access network verification process of MS.

Step 205, AAA among VCSN agency is reported to HAAA among the HCSN by inserting request message AAA Access Request with the DS-lite ability information of MS.

Step 206, because the DS-lite strategy of network side is determined by HAAA, so HAAA can directly get access to the DS-lite support policy information of network side, HAAA is according to the DS-lite ability information of MS, the ability of the DS-lite support policy of network side and CSN distributing IP v4 address, determine whether to authorize this MS to use the DS-lite technology, and when authorizing MS to use the DS-lite technology, determine the DS-lite mode of operation that MS adopts, that is: authorize MS to obtain the IPv4 business, or authorize ASN to adopt the DS-lite proxy mode to provide IPv4 business for MS by the DS-lite client mode.

If MS has the DS-lite ability, that is: support DS-lite, and has the IPv4 business demand, and being MS, the HCSN ability do not distribute any IPv4 address, comprise publicly-owned IPv4 address and private ip v4 address, and the DS-lite support policy of network side then authorizes MS to take the DS-lite client mode to obtain the IPv4 business for can use DS-lite.If MS has the IPv4 business demand but itself does not have the DS-lite ability, and being MS, the HCSN ability do not distribute any IPv4 address, comprise publicly-owned IPv4 address and private ip v4 address, but the DS-lite support policy of network side then authorizes ASN to take the DS-lite proxy mode to provide IPv4 business for MS for using the DS-lite agency.

Step 207, HAAA is provided with the CS type of the corresponding SF of presetting according to the DS-lite mode of operation of the MS that determines.Concrete, when HAAA determined to take the DS-lite proxy mode to provide IPv4 professional for MS, it was IPv4 that HAAA is provided with the CS type that presets SF; When the HAAA decision authorized MS to take the DS-lite client mode to obtain the IPv4 service, it was IPv6 that HAAA is provided with the CS type that presets SF.

Step 208, HAAA is in the process of MS access network authentication, by access accept the AAA agency of message AAA Access Accept in VCSN send the IP address of MS, among this HSN the CGN address information and be provided with the SF information that presets of CS type, this presets the CS type that SF information comprises SF.

No matter HAAA is MS has been selected for which kind of DS-lite mode of operation, also no matter the node type of MS is the single stack node of dual stack node or IPv4, HAAA is that MS issues a publicly-owned IPv6 address, and does not issue any type of IPv4 address for it, comprises private ip v4 address and publicly-owned IPv4 address.HAAA is that the IPv6 address that MS issues can be that a concrete IPv6 address also can be the IPv6 address prefix.When the HAAA decision authorizes MS to take the DS-lite client mode to obtain the IPv4 service, this DHCP of sixth version (Dynamic Host Configuration Protocol Version 6 also can be passed through in the IPv6 address of MS, hereinafter to be referred as: DHCP v6) or this mobile IP of sixth version (Mobile IP Version 6, hereinafter to be referred as: MIPv6) registration process obtains.

Step 209, AAA among VCSN agency will insert and accept message AAA Access Accept and be transmitted to ASN GW among the ASN.If the DS-lite support policy of network side is for can use DS-lite, and VCSN has the ability that issues CGN, that is: the DS-lite ability information of VCSN is for providing CGN, and then VCSN can accept to carry in the message CGN address information that oneself can distribute in this access.

Step 210, ASN is the DS-lite mode of operation of the CS type that presets SF that issues of MS and IP address class type identification MS according to HAAA.

When ASN detects HAAA is that the CS type that certain bar that MS issues presets SF is IPv4, but unpromising its issues any IPv4 address, comprise publicly-owned IPv4 address and private ip v4 address, do not specify the server address of DHCPv4 yet, but for it has distributed IPv6 address or prefix, and the network side DS-lite support policy that receives the HAAA transmission is for using the DS-lite agency, and then execution in step 211.Otherwise, be that all CS type that preset stream that MS issues are IPv6 when ASN detects HAAA, and issued IPv6 address or prefix that then execution in step 213.

Step 211, ASN activates the DS-lite agent functionality, and after the verification process of MS access network is finished, triggers the SF that sets up the IPv4 business.

Step 212, it is the SF of IPv4 that ASN has set up the CS type, show and taked the DS-lite proxy mode, ASN moves IP (Mobile IP Version4 in MS initiation DHCPv4 Address requests or the 4th version, hereinafter to be referred as: MIPv4) in the registration process, by DHCPv4 acknowledge message DHCPv4offer, MIPv4 registration reply message MIPv4Rsponse or act on behalf of broadcast Agent Advertisement, send well-known IPv4 address to MS.If MS is an IPv4 list stack node, then ASN is kept at ASN with the IPv6 address, needn't be handed down to MS.No longer carry out follow-up flow process.

Step 213, after the verification process of MS access network was finished, ASN normally set up the SF of IPv6 business.

Step 214, after ASN normally sets up the SF of IPv6, MS finds oneself to have the DS-lite ability, then in DHCPv6 request message or route request information Router solicit or Binding Update request message Binding Update, encapsulate the CGN address request information, and in DHCPv6 or MIPv6 registration process, send to ASN.

Step 215, ASN detects whether the network side DS-lite support policy that receives is to use the DS-lite function, that is: whether ASN detects MS has authority to use the DS-lite technology, if MS has authority to use the DS-lite technology, then ASN will be from CSN, comprises being encapsulated in DHCPv6 response message DHCPv6Rsponse or routing broadcast message Router Advertisement or the binding response message Binding Acknowledgment from HCSN with from the CGN address information that VCSN receives being handed down to MS.

By embodiment shown in Figure 4, MS, ASN and CSN have carried out the DS-lite mode of operation of MS to be consulted, and each functional entity has obtained information needed, and communication network just can normally use DS-lite technical transmission IPv4 business datum.If that is: adopt the DS-lite proxy mode, ASN has obtained the CGN address information, MS has obtained well-known IPv4 address, MS is after ASN sends the IPv4 business datum, the DS-lite agency is mail to CGN after the IPv4 business datum is encapsulated, after CGN peels off IPv6 tunnel and process NAT conversion, mail to Correspondent Node.If adopt the DS-lite client mode, MS has obtained the CGN address information, and directly the IPv4 business datum is carried out mailing to CGN after the tunnel encapsulation, after CGN peels off the IPv6 tunnel and carries out the NAT conversion, mails to Correspondent Node.

Among the embodiment shown in Figure 4,, among the embodiment two then shown in Figure 4, can not comprise flow process embodiment illustrated in fig. 3 when netinit if flow process embodiment illustrated in fig. 3 is carried out.Otherwise, if flow process embodiment illustrated in fig. 3 is not finished when netinit, also comprise flow process embodiment illustrated in fig. 3 among the embodiment shown in Figure 4, that is: step 204-206 comprises step 101-103 respectively, step 208 and 209 comprises step 104 and 105 respectively, and, in the step 206, HAAA can also needn't wait for and go after the DS-lite support policy of network side is determined to determine whether to authorize this MS to use the DS-lite mode of operation of DS-lite technology and MS employing again, but direct DS-lite ability information according to ASN that gets access among the step 101-102 and CSN, the ability of the DS-lite ability information of the MS that gets access among the step 201-205 and CSN distributing IP v4 address, directly determine whether to authorize this MS to use the DS-lite mode of operation of DS-lite technology and MS employing, and determine or determine afterwards the DS-lite support policy of network side simultaneously.

In addition, among the embodiment shown in Figure 4, with MS roaming taking place is that example is illustrated.If MS roams, then, do not need the associative operation of VCSN in the above-mentioned flow process owing to do not comprise VCSN, that is: ASN directly and HCSN mutual.The operation of step 204 and step 205 is specially: the ASN directly HAAA in HCSN sends the access request message of the DS-lite ability information that has MS.Accordingly, the operation of step 208 and step 209 is specially: the access that the HAAA among the HCSN will carry the IP address of presetting SF information, MS and CGN address information is accepted message and is directly sent to ASN.At this moment, if embodiment shown in Figure 4 also comprises the flow process of embodiment shown in Figure 3, then step 101 is specially with the operation of step 102: ASN directly sends the access request message of the DS-lite ability information that has this ASN to HCSN.Accordingly, the operation of step 104 and step 105 is specially: the access that the HAAA among the HCSN will carry network side DS-lite support policy is accepted message and is directly sent to ASN, equally, in the step 206, HAAA can also needn't wait for and go after the DS-lite support policy of network side is determined to determine whether to authorize this MS to use the DS-lite mode of operation of DS-lite technology and MS employing again, but the DS-lite ability information that directly reports according to ASN, the ability of the DS-lite ability information of MS and CSN distributing IP v4 address, directly determine whether to authorize this MS to use the DS-lite mode of operation of DS-lite technology and MS employing, and determine or determine afterwards the DS-lite support policy of network side simultaneously.

As an alternative embodiment of the invention, MS user directly contracts the DS-lite ability of oneself in HCSN.After HCSN learns the DS-lite support policy of network side, can determine whether to authorize MS to use the DS-lite technology according to MS user's DS-lite ability CAMEL-Subscription-Information, the DS-lite support policy of network side and the ability of CSN distributing IP v4 address.And when authorizing MS to use the DS-lite technology, determine that MS adopts the DS-lite client mode to obtain the IPv4 business, or authorize ASN to adopt the DS-lite proxy mode to provide IPv4 business, and should determine that the result was issued to ASN and/or MS in the implicit expression mode for MS.That is: when HCSN determines that MS adopts the DS-lite client mode to obtain the IPv4 business, the CS type of the SF that HCSN issues is set to IPv6, when authorizing ASN to adopt the DS-lite proxy mode to provide IPv4 professional for MS, the CS type of the SF that HCSN issues is set to IPv4.No matter take which kind of DS-lite mode of operation, also no matter the node type of MS is two stacks or IPv4-only, and HCSN issues a publicly-owned IPv6 address or a prefix for MS simultaneously.HCSN is after ASN issues IP address, CGN address information and SF information, and ASN is according to the DS-lite mode of operation of CS type that presets SF and IP address class type identification MS.Be specially: only issued the IPv6 address without any the IPv4 address for MS if ASN finds HCSN, do not specify the server address of any DHCPv4 yet, but it is IPv4 that certain bar presets the CS type of stream, and the network side DS-lite support policy of before receiving is for using the agency with DS-lite, and then ASN enables the DS-lite agency for this MS.Otherwise, if ASN finds that HCSN is that MS has issued the IPv6 address, but all CS type that preset stream are IPv6, then ASN is after the CGN request that receives the MS transmission, whether the network side DS-lite support policy of receiving before detecting is to use the DS-lite function, if can enable the DS-lite function, then ASN issues the CGN address information to MS, show to MS and can enable the DS-lite client, MS can use this CGN address information to carry out IPv4over IPv6 encapsulation afterwards, so that obtain the IPv4 business.When authorizing ASN to adopt the DS-lite proxy mode to provide IPv4 professional for MS, after ASN activates the DS-lite agent functionality, also issue well-known IPv4 address to MS, so that MS adopts the source address of this well-known IPv4 address as up IPv4 packet, and and be indifferent to network side and whether enable the DS-lite agent functionality.The ability information of the DS-lite of MS is specifically as follows: support DS-lite or do not support DS-lite.

As shown in Figure 5, be the flow chart of DS-lite negotiation processing method embodiment three of the present invention, among this embodiment, can determine the DS-lite mode of operation of user terminal by the HAAA among the HCSN.It specifically may further comprise the steps:

Step 301, MS begins the access network verification process.

Step 302, in MS access network verification process, the AAA agency of the ASN GW among the ASN in VCSN sends and inserts request message AAA Access Request.

Step 303, the HAAA of AAA agency in HCSN among the VCSN sends and inserts request message AAA Access Request.

Step 304, because the DS-lite strategy of network side is determined by HAAA, so HAAA can directly get access to the DS-lite support policy information of network side, HAAA takes all factors into consideration the DS-lite support policy of network side, MS user's DS-lite ability CAMEL-Subscription-Information and the ability of CSN distributing IP v4 address, judge whether to authorize MS to use the DS-lite technology, and authorize MS to take which kind of DS-lite mode of operation.

If showing, MS user's DS-lite ability CAMEL-Subscription-Information supports DS-lite, then HAAA gives tacit consent to this MS and has the DS-lite ability, and HAAA judges MS and has the IPv4 business demand, and being MS, the HCSN ability do not distribute any IPv4 address, comprise publicly-owned IPv4 address and private ip v4 address, and the DS-lite support policy of network side then authorizes MS to take the DS-lite client mode to obtain the IPv4 business for can use DS-lite.MS user's DS-lite ability CAMEL-Subscription-Information shows and does not support DS-lite if MS has the IPv4 business demand, then HAAA gives tacit consent to this MS and does not have the DS-lite ability, and being MS, the HCSN ability do not distribute any IPv4 address, comprise publicly-owned IPv4 address and private ip v4 address, but the DS-lite support policy of network side then authorizes ASN to take the DS-lite proxy mode to provide IPv4 business for MS for using the DS-lite agency.

Step 305, HAAA is provided with the CS type of SF according to the DS-lite mode of operation that the MS that determines adopts.

Concrete, when HAAA determined to take the DS-lite proxy mode to provide IPv4 professional for MS, it was IPv4 that HAAA is provided with the CS type that presets SF; When the HAAA decision authorized MS to take the DS-lite client mode to obtain the IPv4 service, it was IPv6 that HAAA is provided with the CS type that presets SF.This step 305 is identical with step 207 operation among the embodiment 2.

Step 306, HAAA in the process of MS access network authentication, by access accept the AAA agency of message AAA Access Accept in VCSN send the IP address of MS, among this HCSN the CGN address information and be provided with the SF information that presets of CS type.

Step 307, the AAA agency among the VCSN will insert and accept message AAA Access Accept forwards to the ASN GW among the ASN.If the DS-lite support policy of network side is for can use DS-lite, and VCSN has the ability that issues CGN, that is: the DS-lite ability information of VCSN is for providing CGN, and then VCSN can accept to carry in the message CGN address information that oneself can distribute in this access.

Step 308, ASN is the DS-lite mode of operation of the CS type that presets SF that issues of MS and IP address class type identification MS according to HAAA.

When ASN detects HAAA is that the CS type that certain bar that MS issues presets SF is IPv4, but unpromising its issues any IPv4 address, comprise publicly-owned IPv4 address and private ip v4 address, do not specify the server address of DHCPv4 yet, but for it has distributed IPv6 address or prefix, and the network side DS-lite support policy of receiving is for using the DS-lite agency, and then execution in step 309.Otherwise, be that all CS type that preset stream that MS issues are IPv6 when ASN detects HAAA, and issued IPv6 address or prefix that then execution in step 311.

Step 309, ASN activates the DS-lite agent functionality, and after the verification process of MS access network is finished, triggers the SF that sets up the IPv4 business.

Step 310, it is the SF of IPv4 that ASN has set up the CS type, show and taked the DS-lite proxy mode, ASN moves IP (Mobile IP Version4 in MS initiation DHCPv4 Address requests or the 4th version, hereinafter to be referred as: MIPv4) in the registration process, by DHCP v4 acknowledge message DHCPv4offer, MIPv4 registration reply message MIPv4Rsponse or act on behalf of broadcast Agent Advertisement, send well-known IPv4 address to MS.If MS is an IPv4 list stack node, then ASN is kept at ASN with the IPv6 address, needn't be handed down to MS.No longer carry out follow-up flow process.

Step 311, after the verification process of MS access network was finished, ASN normally set up the SF of IPv6 business.

Step 312, after ASN normally sets up the SF of IPv6, MS finds oneself to have the DS-lite ability, then in DHCPv6 request message or route request information Router solicit RS or Binding Update request message Binding Update, encapsulate the CGN address request information, and in DHCPv6 or MIPv6 registration process, send to ASN.

Step 313, ASN detects whether the network side DS-lite support policy that receives is to use the DS-lite function, that is: whether ASN detects MS has authority to use the DS-lite technology, if MS has authority to use the DS-lite technology, then ASN will be from CSN, comprises being encapsulated in DHCPv6 response message DHCPv6Rsponse or routing broadcast message Router Advertisement or the binding response message Binding Acknowledgment from HCSN with from the CGN address information that VCSN receives being handed down to MS.

Among the embodiment shown in Figure 5, carried out during at netinit, among the embodiment then shown in Figure 5, can not comprise flow process embodiment illustrated in fig. 3 when flow process embodiment illustrated in fig. 3.Otherwise, if flow process embodiment illustrated in fig. 3 is not finished when netinit, also comprise flow process embodiment illustrated in fig. 3 among the embodiment shown in Figure 5, that is: step 302-304 comprises step 101-103 respectively, step 306-307 comprises step 104-105 respectively, and, in the step 304, HAAA can also needn't wait for and go after the DS-lite support policy of network side is determined to determine whether to authorize this MS to use the DS-lite mode of operation of DS-lite technology and MS employing again, but direct DS-lite ability information according to ASN that gets access among the step 101-102 and CSN, the ability of the DS-lite ability CAMEL-Subscription-Information of MS and CSN distributing IP v4 address, directly determine whether to authorize this MS to use the DS-lite mode of operation of DS-lite technology and MS employing, and determine or determine afterwards the DS-lite support policy of network side simultaneously.

Equally, among the embodiment shown in Figure 5, with MS roaming taking place is that example is illustrated.If MS roams, then, do not need the associative operation of VCSN in the above-mentioned flow process owing to do not comprise VCSN, that is: ASN directly and HCSN mutual.The operation of step 302 and step 303 is specially: the ASN directly HAAA in HCSN sends the access request message.Accordingly, the operation of step 306 and step 307 is specially: the access that the HAAA among the HCSN will carry the IP address of presetting SF information, MS and CGN address information is accepted message and is directly sent to ASN.At this moment, if embodiment shown in Figure 5 also comprises flow process embodiment illustrated in fig. 3, then step 101 is specially with the operation of step 102: ASN directly sends the access request message of the DS-lite ability information that has this ASN to HCSN.Accordingly, the operation of step 104 and step 105 is specially: the access that the HAAA among the HCSN will carry network side DS-lite support policy is accepted message and is directly sent to ASN, equally, in the step 304, HAAA can also needn't wait for and go after the DS-lite support policy of network side is determined to determine whether to authorize this MS to use the DS-lite mode of operation of DS-lite technology and MS employing again, but the DS-lite ability information that directly reports according to ASN, the ability of the DS-lite ability CAMEL-Subscription-Information of MS and CSN distributing IP v4 address, directly determine whether to authorize this MS to use the DS-lite mode of operation of DS-lite technology and MS employing, and determine or determine afterwards the DS-lite support policy of network side simultaneously.

Among the embodiment shown in Figure 5, HAAA directly determines whether to MS activates the DS-lite agent functionality according to user DS-lite CAMEL-Subscription-Information, the problem that the actual DS-lite ability of MS and user's DS-lite ability CAMEL-Subscription-Information is not inconsistent may occur.That is: when the signatory support of user DS-lite ability, HAAA can give tacit consent to MS and have the DS-lite ability, and the situation that MS does not have the DS-lite ability may occur in the reality.At this moment, when MS wanted to ASN transmission IPv4 business datum, its IPv4 business datum transmission request meeting was refused by ASN, and MS user can remove to revise its DS-lite ability CAMEL-Subscription-Information in view of the above.Otherwise when the user is signatory when not supporting the DS-lite ability, HAAA can give tacit consent to MS and not have the DS-lite ability, and MS may have the DS-lite ability in the reality.At this moment, do not influence MS and obtain the IPv4 business by the DS-lite proxy mode.

As another embodiment of the present invention, after HAAA learns the DS-lite support policy of network side among the HCSN, according to user's service profile, the DS-lite support policy of network side and the ability of CSN distributing IP v4 address, whether whether identification MS be dual stack node and need to use the DS-lite technology to obtain the IPv4 business, wherein, whether user's service profile indication user has the business demand of IPv4, and/or whether has the business demand of IPv6.HCSN is dual stack node and need uses the DS-lite mode of operation to obtain IPv4 when professional that at MS in the access network verification process of MS, the IPv6 address from MS to ASN or prefix, CGN address information and the CS type that issue are the SF information of IPv4.MS detects the DS-lite ability of this MS, and when MS has the DS-lite ability, sends the CGN address request information to ASN.ASN is when receiving the CGN address request information, the DS-lite support policy that inquires network side is for can use DS-lite, and the SF that it is IPv4 that this MS has a CS type, but CSN does not distribute any type of IPv4 address for it, the server address that comprises publicly-owned IPv4 address, private ip v4 address and DHCPv4, then issue the CGN address information to MS, and CS type that initiate to revise this SF is the process of IPv6 and the process of setting up of amended SF and DP, so that notice MS can adopt the mode of operation of DS-lite client to obtain the IPv4 service.ASN is not when receiving the CGN address request information, inquiring this MS, a CS type is arranged is the SF of IPv4, but CSN does not distribute any type of IPv4 address for it, comprise publicly-owned IPv4 address, the server address of private ip v4 address and DHCPv4, and the DS-lite support policy of network side is for can use DS-lite and can enable the DS-lite agent functionality, then activate the DS-lite agent functionality for MS, initiate the SF of IPv4 business and the process of setting up of DP, and issue well-known IPv4 address to MS, so that ASN adopts DS-lite agency's mode of operation to provide IPv4 business for MS.

As shown in Figure 6, be the flow chart of DS-lite negotiation processing method embodiment four of the present invention, among this embodiment, can determine the DS-lite mode of operation of user terminal, be applicable to that MS is the situation of dual stack node by ASN.As shown in Figure 6, this embodiment specifically may further comprise the steps:

Step 401, MS begins the access network verification process.

Step 402, in MS access network verification process, the AAA agency of the ASN GW among the ASN in VCSN sends and inserts request message AAA Access Request.

Step 403, the HAAA of AAA agency in HCSN among the VCSN sends and inserts request message AAA Access Request.

Step 404, after HAAA among the HCSN learns the DS-lite support policy of network side, take all factors into consideration user's service profile, the DS-lite support policy of network side and the ability of CSN distributing IP v4 address, judge whether MS is dual stack node and whether needs to use the DS-lite technology to obtain the IPv4 business.If MS is dual stack node and needs to use the DS-lite mode of operation to obtain the IPv4 business, execution in step 405; Otherwise, do not carry out follow-up DS-lite related procedure.

Concrete, because the DS-lite support policy of network side is definite by HAAA, so HAAA can directly get access to the DS-lite policy information of network side.If being MS, the HCSN ability do not distribute any IPv4 address, comprise publicly-owned IPv4 address and private ip v4 address, and the DS-lite support policy of network side is for can use DS-lite, and the service profile instruct MS of MS has the business demand of IPv4 and IPv6 simultaneously, then judging MS is dual stack node, and need take the DS-lite technology to obtain the IPv4 business.

Step 405, HAAA is MS distributing IP v6 address or prefix, this IPv6 address also can be taked the DHCPv6 pattern or be obtained in the MIPv6 registration process, and the CS type of the SF that will be correlated with uses as default, i.e. IPv4.In the access network verification process of MS, be carried at the AAA agency who accepts to be issued among the message AAA Access Accept among the VCSN with distributing to the IPv6 address of MS or SF information that prefix, CGN address information and CS type are IPv4.

Step 406, AAA among VCSN agency will insert and accept message AAA Access Accept and be transmitted to ASN GW among the ASN, if the DS-lite support policy of network side is for can use DS-lite, and VCSN has the ability that issues CGN, then the VCSN CGN address information of can be on this access is accepted to carry in the message oneself distributing.

Step 407, after the verification process of the access network of MS was finished, ASN judged whether MS needs to use the DS-lite technology to obtain the IPv4 business, and began to monitor MS and whether have the DS-lite ability.

Judge whether MS needs to use the DS-lite technology to be specially: ASN finds that HCSN has issued the preset SF of a CS type as IPv4 as MS, but unpromising its issues any type of IPv4 address, the server address that comprises publicly-owned IPv4 address, private ip v4 address and DHCPv4, and the DS-lite support policy of network side is then judged MS and need be adopted the DS-lite technology to obtain the IPv4 service for can use DS-lite.But this moment, the DS-lite mode of operation was that client or agency also determine, then ASN begins to monitor MS and whether has the DS-lite ability, so that decision DS-lite mode of operation.

In addition, need use the DS-lite technology to obtain the IPv4 service, then at first initiate the foundation that other CS types are SF and the DP of IPv6 in case ASN judges MS, and the SF that wouldn't to set up this CS type be IPv4.

Step 408, MS detects oneself and whether has the DS-lite ability after the verification process of access network is finished.

Step 409, if have the DS-lite ability, then MS utilizes the SF carrying of the IPv6 that other certain bar set up, initiates the registration process of DHCPv6 or MIPv6, the CGN address request information is carried in corresponding D HCPv6 request message or the route request information sends to ASN.

If MS does not have the DS-lite ability, then in DHCPv6 request message and route request information, do not carry the CGN address request information.

Step 410, ASN determines the mode of operation of the DS-lite of MS according to whether comprising the CGN address request information in DHCPv6 request message or the route request information.

Concrete, if comprise the CGN address request information in DHCPv6 request message or the route request information, illustrate that MS has the DS-lite ability, determine that MS uses the DS-lite client mode, then execution in step 411.If do not comprise the CGN address request information in DHCPv6 request message and the route request information, illustrate that MS does not have the DS-lite ability, determine that MS uses the DS-lite proxy mode, then execution in step 413.

Step 411, ASN returns DHCPv6 response message or routing broadcast message to MS, wherein carries the CGN address information.

Step 412 after MS receives the CGN address information, starts DS-lite client mode of operation, and the CS type of the SF that it is IPv4 that former CS type is revised in ASN initiation simultaneously is the process of IPv6, and the process of setting up of amended SF and DP.Afterwards, no longer carry out follow-up flow process.

Step 413, ASN returns DHCPv6 response message or routing broadcast message to MS, does not wherein all carry CGN address information information.

Step 414, ASN is that MS activates DS-lite Prxoy, and to initiate the CS type be that SF and the DP of IPv4 sets up process.

Step 415, ASN is in the registration process of DHCPv4 or MIPv4, by DHCPv4 acknowledge message DHCPv4offer, MIPv4 registration reply message MIPv4Rsponse or act on behalf of broadcast Agent Advertisement, MS is handed down in well-known IPv4 address, does not know existing of DS-lite agency to guarantee MS.

In the foregoing description shown in Figure 6,, among the embodiment then shown in Figure 6, can not comprise flow process embodiment illustrated in fig. 3 when netinit if flow process embodiment illustrated in fig. 3 is carried out.Otherwise, also comprising flow process embodiment illustrated in fig. 3 among the embodiment shown in Figure 6, that is: step 402-406 comprises step 101-105 respectively.

Equally, among the embodiment shown in Figure 6, with MS roaming taking place is that example is illustrated.If MS roams, then, do not need the associative operation of VCSN in the above-mentioned flow process owing to do not comprise VCSN, that is: ASN directly and HCSN mutual.Step 402 is specially with the operation of step 403: ASN directly sends to HCSN and inserts request message.Accordingly, step 405 and step 406 are specially: the access that the HAAA among the HCSN will carry the IP address of presetting SF information, MS and CGN address information is accepted message and is directly sent to ASN.At this moment, if embodiment shown in Figure 6 has comprised flow process embodiment illustrated in fig. 3, then step 101 is specially with the operation of step 102: ASN directly sends the access request message of the DS-lite ability information that has this ASN to HCSN.Accordingly, the operation of step 104 and step 105 is specially: the access that the HAAA among the HCSN will carry network side DS-lite support policy is accepted message and is directly sent to ASN.

In another present embodiment of the present invention, compare with embodiment shown in Figure 6, MS both can be dual stack node, also can be the single stack node of IPv4.And, when ASN knows that MS need use the DS-lite technology to obtain the IPv4 service, be defaulted as the mode of operation that MS selects the DS-lite agency, that is: do not wait for the prompting of MS, just directly initiating the CS type is the foundation of SF and the DP of IPv4.Detect when oneself having the DS-lite ability at MS, in the carrying of the SF of this IPv4, send the CGN address request information to ASN.After ASN receives the CGN Address requests of MS and issues the CGN address information, the CS type of this SF is revised as IPv6, afterwards, MS can obtain the IPv4 service with the pattern of DS-lite client in the carrying of amended SF.Otherwise, if detecting oneself, MS do not have the DS-lite ability, then can not send the CGN address request information to ASN, ASN can activate the DS-lite agency for this MS, and issue well-known IPv4 address to MS, afterwards, MS can adopt DS-lite agency's mode of operation to obtain the IPv4 service.

As shown in Figure 7, be the flow chart of DS-lite negotiation processing method embodiment five of the present invention.Among this embodiment, can determine the DS-lite mode of operation of MS by ASN.ASN is that the MS acquiescence is selected the DS-lite proxy mode, does not activate the DS-lite agent functionality.When MS has the DS-lite ability, the CS type of SF is revised as IPv6.As shown in Figure 7, this embodiment may further comprise the steps:

Step 501, MS begins the access network verification process.

Step 502, in MS access network verification process, the AAA agency of the ASN GW among the ASN in VCSN sends and inserts request message AAA Access Request.

Step 503, the HAAA of AAA agency in HCSN among the VCSN sends and inserts request message AAA Access Request.

Step 504, after HAAA among the HCSN learns the DS-lite support policy of network side, take all factors into consideration user's service profile, the DS-lite support policy of network side and the ability of CSN distributing IP v4 address, judge whether MS needs to use the DS-lite mode of operation to obtain the IPv4 business.If MS need use the DS-lite mode of operation to obtain the IPv4 business, execution in step 505; Otherwise, do not carry out follow-up DS-lite related procedure.

Concrete, because the DS-lite support policy of network side is definite by HAAA, so HAAA can directly get access to the DS-lite policy information of network side.Do not distribute any IPv4 address if the HCSN ability is MS, comprise publicly-owned IPv4 address and private ip v4 address, and the DS-lite support policy of network side is then judged MS and need be taked the DS-lite technology to obtain the IPv4 business for can use DS-lite.

Step 505, HAAA is MS distributing IP v6 address or prefix, this IPv6 address also can be taked the DHCPv6 pattern or be obtained in the MIPv6 registration process, and the CS type of the SF that will be correlated with uses as default, i.e. IPv4.In the access network verification process of MS, be carried at the AAA agency who accepts to be issued among the message AAA Access Accept among the VCSN with distributing to the IPv6 address of MS or SF information that prefix, CGN address information and CS type are IPv4.

Step 506, AAA among VCSN agency will insert and accept message AAA Access Accept and be transmitted to ASN GW among the ASN, if the DS-lite support policy of network side is for can use DS-lite, and VCSN has the ability that issues CGN, then the VCSN CGN address information of can be on this access is accepted to carry in the message oneself distributing.

Step 507, after the verification process of the access network of MS was finished, ASN judged whether MS needs to use the DS-lite technology, and began to monitor MS and whether have the DS-lite ability.If ASN judges MS and need use the DS-lite technology to obtain the IPv4 business, acquiescence beginning DS-lite agency's operation, that is: execution in step 508.Otherwise ASN judges that MS does not need to use the DS-lite technology to obtain the IPv4 business, then no longer carries out follow-up DS-lite related procedure.

Step 508, ASN initiates the SF of IPv4 and the process of setting up of DP.

Step 509, MS detects oneself whether to have the DS-lite ability.

Step 510 if MS has the DS-lite ability, then sends the CGN address request information to ASN in the carrying of the SF of IPv4.Concrete, MS can be carried at the CGN address request information in DHCPv4 request message, MIPv4 login request message or the route request information and send to ASN.

If MS does not have the DS-lite ability, be not to send the CGN address request information to ASN in the SF carrying of IPv4 then in the CS type.

Step 511, ASN determines the mode of operation of the DS-lite of MS.

Concrete, if ASN has obtained the CGN address request information from DHCPv4 request message, MIPv4 login request message or route request information, determine that then the mode of operation of the DS-lite of MS is the DS-lite client mode, then execution in step 513.Otherwise, if ASN does not receive the CGN address request that MS sends, determine that then the mode of operation of the DS-lite of MS is the DS-lite proxy mode, then execution in step 512.

Step 512, ASN is that MS activates the DS-lite agency, and by DHCPv4 acknowledge message DHCPv4offer, MIPv4 registration reply message MIPv4Rsponse or act on behalf of broadcast Agent Advertisement, MS is handed down in well-known IPv4 address, does not know existing of DS-lite agency to guarantee MS.After this, no longer carry out follow-up flow process.

Step 513, ASN is by DHCPv4 acknowledge message DHCPv4offer, MIPv4 registration reply message MIPv4Rsponse or act on behalf of broadcast Agent Advertisement, the CGN address information is handed down to MS, and notice MS can adopt the mode of operation of DS-lite client to obtain the IPv4 business.

Step 514, ASN initiates the CS type of SF is revised as the process of IPv6, and SF and the DP of initiation IPv6 set up process.

After this step 514, MS just can adopt the DS-lite client mode to send in the carrying of the SF of newly-established IPv6 and DP or accept the packet of IPv4 business.

Among the embodiment shown in Figure 7,, among the embodiment then shown in Figure 7, can not comprise flow process embodiment illustrated in fig. 3 when netinit if flow process embodiment illustrated in fig. 3 is carried out.Otherwise, if flow process embodiment illustrated in fig. 3 is not finished, also comprising flow process embodiment illustrated in fig. 3 among the embodiment shown in Figure 7 when netinit, that is: step 502-506 comprises step 101-105 respectively.

Equally, among the embodiment shown in Figure 7, with MS roaming taking place is that example is illustrated.If MS roams, then, do not need the associative operation of VCSN in the above-mentioned flow process owing to do not comprise VCSN, that is: ASN directly and HCSN mutual.Step 502 is specially with the operation of step 503: ASN directly sends to HCSN and inserts request message.Accordingly, the operation of step 505 and step 506 is specially: the access that HCSN will carry the IP address of presetting SF information, MS and CGN address information is accepted message and is directly sent to ASN.At this moment, if embodiment shown in Figure 7 has comprised flow process embodiment illustrated in fig. 3, step 101 is specially with the operation of step 102: ASN directly sends the access request message of the DS-lite ability information that has this ASN to HCSN.Accordingly, the operation of step 104 and step 105 is specially: the access that the HAAA among the HCSN will carry network side DS-lite support policy is accepted message and is directly sent to ASN.

As shown in Figure 8, be the flow chart of DS-lite negotiation processing method embodiment six of the present invention.Among this embodiment, also can determine the DS-lite mode of operation of MS by ASN.Particularly, by MS with oneself DS-lite ability information by the BS of login request message REG_REQ information reporting in the ASN, by MS_Attachment_Req message the DS-lite ability information of this MS is sent to ASN GW among the ASN by this BS again, judge whether that by ASN to use the DS-lite technology to obtain IPv4 professional and whether enable the DS-lite agency for MS.As shown in Figure 8, this embodiment specifically may further comprise the steps:

Step 601, MS begins the access network verification process.

Step 602, in MS access network verification process, the AAA agency of the ASN GW among the ASN in VCSN sends and inserts request message AAA Access Request.

Step 603, the HAAA of AAA agency in HCSN among the VCSN sends and inserts request message AAA Access Request.

Step 604 after the HAAA among the HCSN learns the DS-lite support policy of network side, is taken all factors into consideration the DS-lite support policy of network side and the ability of CSN distributing IP v4 address, judges whether MS needs to use the DS-lite technology to obtain the IPv4 business.If MS need use the DS-lite mode of operation to obtain the IPv4 business, execution in step 605; Otherwise, do not carry out follow-up DS-lite related procedure.

Step 605, HAAA is MS distributing IP v6 address or prefix, this IPv6 address also can be taked the DHCPv6 pattern or be obtained in the MIPv6 registration process, and the CS type of the SF that will be correlated with uses as default, that is: IPv4.In the access network verification process of MS, be carried at the AAA agency who accepts to be issued among the message AAA Access Accept among the VCSN with distributing to the IPv6 address of MS or SF information that prefix, CGN address information and CS type are IPv4.

Step 606, AAA among VCSN agency will insert and accept message AAA Access Accept and be transmitted to ASN GW among the ASN, if the DS-lite support policy of network side is for can use DS-lite, and VCSN has the ability that issues CGN, then the VCSN CGN address information of can be on this access is accepted to carry in the message oneself distributing.

Step 607, MS is reported to BS among the ASN by login request message REG_REQ with the DS-lite ability information of this MS after the verification process of access network is finished.Wherein, the DS-lite ability of MS is specially: support DS-lite or do not support DS-lite.

Step 608, BS adheres to login request message MS_Attachment_Req with the DS-lite ability information of MS by MS and is reported to ASN GW.

Step 609, presets the DS-lite policy information of SF information and network side at IP address, the CGN address information of the MS that ASN GW sends according to HCSN in inserting the networking verification process, judge whether MS needs to use the DS-lite technology to obtain the IPv4 business.Concrete, ASN finds that HCSN is that MS has issued a SF that presets that the CS type is IPv4, but unpromising its issues any type of IPv4 address, the server address that comprises publicly-owned IPv4 address, private ip v4 address and DHCPv4, and the DS-lite support policy of network side is then judged MS and need be adopted the DS-lite technology to obtain the IPv4 service for can use DS-lite.

After ASN judged MS and need use the DS-lite technology to obtain the IPv4 business, continuing to be judged as the DS-lite mode of operation that MS takes was DS-lite client or DS-lite agency.Concrete, can judge in the following way: as if the DS-lite ability information of the MS that receives by step 607-608, know that MS supports DS-lite, the MS that then makes a strategic decision out obtains the IPv4 business by the DS-lite client mode, and execution in step 612 afterwards.Otherwise.As if the DS-lite ability information that receives MS by step 607-608, know that MS does not support DS-lite, the ASN that then makes a strategic decision out activates the DS-lite agency so that for MS provides IPv4 business, execution in step 610 afterwards.

Step 610, ASN is that MS activates the DS-lite agent functionality, and triggering CS type is the foundation of the SF of IPv4 business.

Step 611, ASN is in the registration process of DHCPv4 or MIPv4, by DHCP v4 acknowledge message DHCPv4offer, MIPv4 registration reply message MIPv4Rsponse or act on behalf of broadcast Agent Advertisement, MS is handed down in well-known IPv4 address, does not know existing of DS-lite agency to guarantee MS.Afterwards, no longer carry out follow-up flow process.

Step 612, ASN initiates the CS type of SF is revised as the process of IPv6, and SF and the DP of initiation IPv6 set up process.

Step 613, MS encapsulates the CGN address request information, and sends to ASN after setting up the SF that the CS type is the IPv6 business in DHCPv6 request message or route request information.

Step 614, ASN is encapsulated in the CGN address information among DHCPv6 response message DHCPv6Rsp or the routing broadcast message RA and is handed down to MS.

Among the embodiment shown in Figure 8,, among the embodiment then shown in Figure 8, can not comprise flow process embodiment illustrated in fig. 3 when netinit if flow process embodiment illustrated in fig. 3 is carried out.Otherwise, if flow process embodiment illustrated in fig. 3 is not finished, also comprising flow process embodiment illustrated in fig. 3 among the embodiment shown in Figure 8 when netinit, that is: step 602-606 comprises step 101-105 respectively.

Equally, among the embodiment shown in Figure 8, with MS roaming taking place is that example is illustrated.If MS roams, then, do not need the associative operation of VCSN in the above-mentioned flow process owing to do not comprise VCSN, that is: ASN directly and HCSN mutual.Step 602 is specially with the operation of step 603: ASN directly sends to HCSN and inserts request message.Accordingly, the operation of step 605 and step 606 is specially: the access that HCSN will carry the IP address of presetting SF information, MS and CGN address information is accepted message and is directly sent to ASN.At this moment, be specially if embodiment shown in Figure 8 has comprised the process step embodiment illustrated in fig. 3 101 and the operation of step 102: ASN directly sends the access request message of the DS-lite ability information that has this ASN to HCSN.Accordingly, the operation of step 104 and step 105 is specially: the access that the HAAA among the HCSN will carry network side DS-lite support policy is accepted message and is directly sent to ASN.

According to still a further embodiment, the type of the SF that CSN issues be general convergence sub-layer (General Packet Convergence Sublayer, hereinafter to be referred as: GPCS).After ASN receives DS-lite ability, CGN address information, SF information and the IPv6 address of network side, can at first trigger SF and the DP that sets up the GPCS type.When MS has the IPv4 business demand and has the DS-lite ability, send the CGN address request information to ASN, ASN judges MS and need adopt the DS-lite technology to obtain the IPv4 service, and the DS-lite support policy that inquires network side is for after using the DS-lite function, the CGN address information is handed down to MS, so that MS obtains the IPv4 business according to this CGN address; MS has the IPv4 business demand but when not having the DS-lite ability, SF by the GPCS type sends the IPv4 business datum to ASN, ASN detects the IPv4 data, judging MS need adopt the DS-lite technology to obtain the IPv4 service, and the DS-lite support policy that inquires network side is for after using the DS-lite function, for MS activates the DS-lite agent functionality, and issue well-known IPv4 address, so that ASN adopts the DS-lite proxy mode to provide IPv4 business for MS to MS.

As shown in Figure 9, be the flow chart of DS-lite negotiation processing method embodiment seven of the present invention.Among this embodiment, when the CS type was GPCS, whether ASN had up IPv4 business datum to judge whether to activate the DS-lite agent functionality into MS by detecting MS.As shown in Figure 9, this embodiment may further comprise the steps:

Step 701, MS begins the access network verification process.

Step 702, in MS access network verification process, the AAA agency of the ASN GW among the ASN in VCSN sends and inserts request message AAA Access Request.

Step 703, the HAAA of AAA agency in HCSN among the VCSN sends and inserts request message AAA Access Request.

Step 704, the CS type of HAAA SF is set to GPCS.In addition, after HAAA among the HCSN learns the DS-lite support policy of network side, take all factors into consideration user's service profile, the DS-lite support policy of network side and the ability of CSN distributing IP v4 address, judge whether MS needs to use the DS-lite mode of operation to obtain the IPv4 business.If MS need use the DS-lite mode of operation to obtain the IPv4 business, execution in step 705; Otherwise, do not carry out follow-up DS-lite related procedure.

Step 705, HAAA is MS distributing IP v6 address or prefix, this IPv6 address also can be taked the DHCPv6 mode or be obtained in the MIPv6 registration process in the access network verification process of MS, is carried at the AAA that accepts to be issued among the message AAA Access Accept among the VCSN and acts on behalf of distributing to the IPv6 address of MS or SF information that prefix, CGN address information and CS type are GPCS.

Step 706, AAA among VCSN agency will insert and accept message AAA Access Accept and be transmitted to ASN GW among the ASN, if the DS-lite support policy of network side is for can use DS-lite, and VCSN has the ability that issues CGN, then the VCSN CGN address information of can be on this access is accepted to carry in the message oneself distributing.

Step 707, the SF information that ASN GW issues according to HAAA triggers the SF and the DP that set up the GPCS type.

Step 708, MS has the IPv4 business demand, that is: when needing to send business datum, detect oneself and whether have the DS-lite ability.

Step 709 if MS has the DS-lite ability, then sends the CGN address request information to ASN GW, and this CGN address request information can be carried by DHCPv6 request message or MIP registration message.Otherwise if MS does not have the DS-lite ability, MS directly sends the IPv4 business datum to ASN by the SF of GPCS type.

Step 710, ASN judges whether MS has the DS-lite ability.Be specially,, illustrate that MS has the DS-lite ability, determine that MS uses the DS-lite client mode to obtain the IPv4 business, execution in step 711 if ASN receives the CGN solicited message that MS sends.Otherwise, if ASN receives the IPv4 business datum that MS sends, illustrate that then MS does not have the DS-lite ability, determine that MS uses the DS-lite proxy mode to obtain business, execution in step 712.

Step 711, ASN inquires the DS-lite support policy of network side for can use DS-lite, and HCSN is that MS has issued the CGN address information, then returns the CGN address information to MS, and this CGN address information can be carried by DHCP or MIP registration message.Afterwards, no longer carry out follow-up flow process.

Step 712, ASN inquires the DS-lite support policy of network side for can use DS-lite and can enable the DS-lite agent functionality, and HCSN has only issued IPv6 address or prefix for MS, and do not issue any type of IPv4 address for it, comprise publicly-owned IPv4 address and private ip v4 address, then ASN is that MS activates the DS-lite agent functionality, and issues well-known IPv4 address to MS, so that ASN adopts the DS-lite proxy mode to provide IPv4 business for MS.Concrete, ASN can be carried at well-known IPv4 address DHCPv4 acknowledge message DHCPv4offer, MIPv4 registration reply message MIPv4Rsponse or act on behalf of among the broadcast Agent Advertisement and be handed down to MS.

Among the embodiment shown in Figure 9,, among the embodiment then shown in Figure 9, can not comprise flow process embodiment illustrated in fig. 3 when netinit if flow process embodiment illustrated in fig. 3 is carried out.Otherwise, if flow process embodiment illustrated in fig. 3 is not finished, also comprising flow process embodiment illustrated in fig. 3 among the embodiment shown in Figure 9 when netinit, that is: step 702-706 comprises step 101-105 respectively.

Equally, among the embodiment shown in Figure 9, with MS roaming taking place is that example is illustrated.If MS roams, then, do not need the associative operation of VCSN in the above-mentioned flow process owing to do not comprise VCSN, that is: ASN directly and HCSN mutual.The operation of step 702 and step 703 is specially: ASN directly sends to HCSN and inserts request message.Accordingly, the operation of step 705 and step 706 is specially: the access that HCSN will carry the IP address of presetting SF information, MS and CGN address information is accepted message and is directly sent to ASN.At this moment, if embodiment shown in Figure 9 has comprised flow process embodiment illustrated in fig. 3, then step 101 is specially with the operation of step 102: ASN directly sends the access request message of the DS-lite ability information that has this ASN to HCSN.Accordingly, the operation of step 104 and step 105 is specially: the access that the HAAA among the HCSN will carry network side DS-lite support policy is accepted message and is directly sent to ASN.

According to another present embodiment of the present invention, the AAA that can't help among the CSN specifies SF information with the form that presets SF, but dynamically initiating the foundation of SF by MS, ASN judges whether to MS activates the DS-lite agent functionality according to the CS type of the SF that MS initiates, and carries out follow-up processing.Concrete, if the CS type of the dynamic SF that MS initiates is IPv4, after then this dynamic SF authorized successfully, ASN activated the DS-lite agency for this MS.Otherwise if the CS type of the dynamic SF that MS initiates is IPv6, after then this dynamic SF authorized successfully, ASN issued the CGN address information for this MS, showed with the DS-lite client mode to MS and obtained the IPv4 business.

As shown in figure 10, be the flow chart of DS-lite negotiation processing method embodiment eight of the present invention.Among this embodiment, can determine the DS-lite mode of operation of user terminal by ASN.As shown in figure 10, this embodiment specifically may further comprise the steps:

Step 801, the Application Function among MS and the HCSN (Application Function, hereinafter to be referred as: AF) interactive application layer signaling.

Step 802, after the application layer Signalling exchange is finished, (the Policy and Charging Rules Function of the strategy of MS and charging regulation function entity among AF and the HCSN, hereinafter to be referred as: PCRF) carry out service authorization, in sending to the message of PCRF, AF carries network access Identifier (the Network Access Identifier of MS, hereinafter to be referred as: NAI) with well-known IPv4 address, for the IPv4 carrying session (Session) of PCRF index MS correspondence.

Step 803, MS detects this MS and whether has the DS-lite ability.If MS does not have the DS-lite ability, MS adds request message Dynamic Service Add Request by dynamic service flow and sends the SF foundation request that the CS type is IPv4 to ASN.If MS has the DS-lite ability, MS adds request message Dynamic Service Add Request by dynamic service flow and sends the SF foundation request that the CS type is IPv6 to ASN, and carries well-known IPv4 address in this request.

Step 804, ASN detects MS and whether has the DS-lite ability.Concrete, be that the dynamic Service person of IPv4 flows and adds request if ASN receives CS type that MS sends, illustrate that then MS does not have the DS-lite ability, execution in step 805.Otherwise,, illustrate that then MS has the DS-lite ability, execution in step 810 if ASN receives the dynamic service flow interpolation request that the CS type of MS transmission is IPv6.

Step 805, ASN arrives corresponding session according to NAI and the well-known IPv4 allocation index of MS.

Step 806, ASN sends the service authorization request message to PCRF, initiates the service authorization process, and PCRF is according to the NAI of session id that carries in the service authorization request message and MS, authorize and confirm the foundation of dynamic service flow, and send service authorization prompt for successful message to ASN.Dynamic service flow wherein is SF.

Step 807, after ASN receives the service authorization prompt for successful message of PCRF transmission, the CS type of finding this newly-established SF is IPv4, and do not carry any type of IPv4 address in the service authorization prompt for successful message, comprise publicly-owned IPv4 address, private ip v4 address and DHCPv4 server address, and ASN is known according to the DS-lite support policy of network side and can be used DS-lite and can enable the DS-lite agent functionality, then ASN authorizes MS to use DS-lite factorage pattern, and activates the DS-lite agent functionality.

Before this step 807, by step 104 embodiment illustrated in fig. 3 and step 105, ASN has received the DS-lite support policy of network side, and therefore, ASN can be known the DS-lite support policy of network side.

Step 808, ASN adds response message Dynamic Service Add Response by dynamic service flow and issues well-known IPv4 address to MS, so that ASN adopts the DS-lite proxy mode to provide IPv4 business for MS.

Step 809, MS returns dynamic service flow to ASN and adds acknowledge message Dynamic Service Add Ack.Afterwards, no longer carry out follow-up flow process.

Step 810, ASN arrives corresponding session according to NAI, well-known IPv4 address and the IPv6 allocation index of MS.

Step 811, ASN sends the service authorization request message to PCRF, initiates the service authorization process, and PCRF authorizes and confirms the foundation of this SF according to the NAI of session id that carries in the dynamic service flow and MS, and sends service authorization prompt for successful message to ASN.Dynamic service flow wherein is SF.

Step 812, after ASN receives the service authorization prompt for successful message of PCRF transmission, the CS type of finding this newly-established SF is IPv6, and the IPv4 address of MS is well-known IPv4 address, and ASN is known according to the DS-lite support policy of network side can use DS-lite, then ASN is that MS licenses DS-lite client mode of operation, and add response message Dynamic Service Add Response message by dynamic service flow and issue the CGN address information to MS, so that MS obtains the IPv4 business according to this CGN address information.

Before this step 812, by step 104 embodiment illustrated in fig. 3 and step 105, ASN has received the DS-lite support policy of network side, and therefore, ASN can be known the DS-lite support policy of network side.

Step 813, MS returns dynamic service flow to ASN and adds acknowledge message Dynamic Service Add Ack.

To embodiment shown in Figure 10, because MS has participated in DS-lite and handled flow process through consultation, the DS-lite negotiation processing method of the embodiment that Fig. 4 is extremely shown in Figure 10 also can be called terminal and consult the DS-lite negotiation processing method at Fig. 4 of the present invention.The terminal negotiation is the negotiation between MS, ASN and HAAA, consults by terminal, and the DS-lite mode of operation that can determine MS is DS-lite client mode or DS-lite proxy mode, and makes related functional entities obtain information needed.

As shown in figure 11, handle the structural representation of device embodiment through consultation for DS-lite of the present invention.The DS-lite of this embodiment handles the flow process that device can be used for realizing the above-mentioned DS-lite negotiation processing method of the present invention embodiment through consultation, and it comprises the acquisition module 901 and first determination module 902.Wherein, acquisition module 901 is used to obtain the DS-lite ability information of ASN and MS.The DS-lite ability information that first determination module 902 is used for the ASN that gets access to according to acquisition module 901 and MS is determined the DS-lite mode of operation of MS.

In addition, acquisition module 901 can also obtain the DS-lite ability information of CSN.Accordingly, again referring to Figure 11, the DS-lite of the embodiment of the invention handles device through consultation and also comprises second determination module 903, is used for the ASN that gets access to according to acquisition module 901 and the DS-lite ability information of CSN, determines the DS-lite support policy of network side.Accordingly, the DS-lite support policy of the network side that first determination module 902 is determined according to second determination module 903, the DS-lite ability information of the MS that gets access to acquisition module 901 is determined the DS-lite mode of operation of MS.

As shown in figure 12, be the structural representation of communication equipment embodiment one of the present invention.The communication equipment of this embodiment can be realized the corresponding operating flow process of CSN among the above-mentioned DS-lite negotiation processing method of the present invention embodiment.It comprises first receiver module 911, the 3rd determination module 912 and first sending module 913.Wherein, first receiver module 911 is used to receive the DS-lite ability information of this ASN that ASN reports.The 3rd determination module 912 is used for the DS-lite ability information of the ASN that receives according to first receiver module 911, determines the DS-lite support policy of network side.First sending module 913 is used for sending to ASN the DS-lite support policy of the network side of being determined by the 3rd determination module 912.

Particularly, first receiver module 911 is used to receive the DS-lite ability information of the VCSN that the VCSN of MS sends and the DS-lite ability information of ASN.Accordingly, the 3rd determination module 912 is according to the DS-lite ability information of ASN and the DS-lite ability information of VCSN, and information is determined the DS-lite support policy of network side.First sending module 913 sends the DS-lite support policy of the network side of being determined by the 3rd determination module 912 to ASN by VCSN.The communication equipment of this embodiment can be used for realizing the present invention's operating process of HCSN among the embodiment as shown in Figure 3.

As shown in figure 13, be the structural representation of communication equipment embodiment two of the present invention.The communication equipment of this embodiment can be realized the HCSN corresponding operating flow process of the present invention in embodiment illustrated in fig. 4.Compare with communication equipment embodiment illustrated in fig. 12, among this embodiment, first receiver module 911 also is used to receive the DS-lite ability information of MS.Accordingly, communication equipment also comprises the 4th determination module 914, module 915 and distribution module 916 is set.Wherein, the 4th determination module 914 is used for the DS-lite ability of the MS that receives according to first receiver module 911, the DS-lite support policy of the network side of determining by the 3rd determination module 912 and the ability of CSN distributing IP v4 address, determine whether to authorize MS to use the DS-lite technology, and when authorizing MS to use the DS-lite technology, the DS-lite mode of operation of determining MS is DS-lite client mode or DS-lite proxy mode, perhaps the 4th determination module 914 is used for the DS-lite ability of the MS that receives according to first receiver module 911, the ability of the DS-lite ability of ASN and/or VCSN and CSN distributing IP v4 address directly determines whether to authorize MS to use the DS-lite mode of operation of DS-lite technology and MS.Module 915 is set is used for definite result according to the 4th determination module 914, when the DS-lite of MS mode of operation is the DS-lite client mode, the CS type of SF is set to IPv6, and when the DS-lite of MS mode of operation was the DS-lite proxy mode, the CS type of SF was set to IPv4.Distribution module 916 is used for to MS distributing IP v6 address.Accordingly, first sending module 913 also is used for issuing by the CS type information that the SF after module 915 CS types are set to IPv4 or IPv6 is set, distribution module 916 IPv6 address of distributing and the CGN address information of storing in advance to ASN.

As shown in figure 14, be the structural representation of communication equipment embodiment three of the present invention.HCSN corresponding operating flow process during communication equipment realization the present invention of this embodiment is embodiment illustrated in fig. 5.Compare with communication equipment embodiment illustrated in fig. 12, the communication equipment of this embodiment also comprises first memory module 917, the 5th determination module 918, module 915 and distribution module 916 is set.Wherein, first memory module 917 is used for store M S user's DS-lite ability CAMEL-Subscription-Information.The 5th determination module 918 is used for the DS-lite ability CAMEL-Subscription-Information according to the MS user of first memory module 917, the DS-lite support policy of the network side of determining by the 3rd determination module 912 and the ability of CSN distributing IP v4 address, determine whether to authorize MS to use the DS-lite technology, and when authorizing MS to use the DS-lite technology, the DS-lite mode of operation of determining MS is DS-lite client mode or DS-lite proxy mode, perhaps the 5th determination module 918 is used for the DS-lite ability of the MS that receives according to first receiver module 911, the ability of the DS-lite ability of ASN and/or VCSN and CSN distributing IP v4 address directly determines whether to authorize MS to use the DS-lite mode of operation of DS-lite technology and MS.The CS type that module 915 is used to be provided with SF is set, definite result according to the 5th determination module 918, when the DS-lite of MS mode of operation is the DS-lite client mode, the CS type of SF is set to IPv6, when the DS-lite of MS mode of operation was the DS-lite proxy mode, the CS type of SF was set to IPv4.Distribution module 916 is used for to MS distributing IP v6 address.Accordingly, first sending module 913 also is used for issuing by the CS type information that the SF after module 915 CS types are set to IPv4 or IPv6 is set, distribution module 916 IPv6 address of distributing and the CGN address information of storing in advance to ASN.

As shown in figure 15, be the structural representation of communication equipment embodiment four of the present invention.The communication equipment of this embodiment can be realized the corresponding operating flow process of Fig. 6 of the present invention and middle HCSN embodiment illustrated in fig. 7.Compare with communication equipment embodiment illustrated in fig. 12, the communication equipment of this embodiment also comprises distribution module 916, first memory module 917 and first identification module 919.Wherein, distribution module 916 is used for to MS distributing IP v6 address.First memory module 917 is used for store M S user's service profile.First identification module 919 is used for the service profile according to the MS user of first memory module 917, the DS-lite ability and the ability of CSN distributing IP v4 address of the network side determined by the 3rd determination module 912, and whether discern MS needs to use the DS-lite technology to obtain the IPv4 business.Accordingly, first sending module 913 is according to the recognition result of first identification module 919, when MS need use the DS-lite technology to obtain the IPv4 business, in the access network verification process of MS, issue the DS-lite support policy of the network side of determining by the 3rd determination module 912, the CGN address information of storage in advance, the CS type information of SF and the IPv6 address that distribution module 916 is distributed to ASN.

Further, first identification module 919 is used for the service profile according to the MS user of first memory module 917, the DS-lite ability and the ability of CSN distributing IP v4 address of the network side determined by the 3rd determination module 912, and whether discern MS is dual stack node.Accordingly, first sending module 913 is according to the recognition result of first identification module 919, be dual stack node and need use the DS-lite technology to obtain IPv4 when professional at MS, in the access network verification process of MS, issue DS-lite support policy, the CGN address information of storage in advance and the CS type information of SF of the network side of determining by the 3rd determination module 912 to ASN.

As shown in figure 16, be the structural representation of communication equipment embodiment five of the present invention.The communication equipment of this embodiment can be realized the corresponding operating flow process of the present invention middle HCSN embodiment illustrated in fig. 8.Compare with communication equipment embodiment illustrated in fig. 12, the communication equipment of this embodiment also comprises distribution module 916 and judge module 920.Wherein, judge module 920 is used for the DS-lite support policy of the network side determined according to the 3rd determination module 912 and the ability of CSN distributing IP v4 address, judges whether MS needs to use the DS-lite technology to obtain the IPv4 business.Distribution module 916 is used for the judged result according to judge module 920, when MS need use the DS-lite technology to obtain the IPv4 business, to MS distributing IP v6 address.Accordingly, first sending module 913 specifically issues the IPv6 address that the DS-lite support policy of the network side of being determined by the 3rd determination module 912, the CGN address information of storing in advance, SF and distribution module 916 are distributed to ASN.

As shown in figure 17, be the structural representation of communication equipment embodiment six of the present invention.The communication equipment of this embodiment can be realized the corresponding operating flow process of the present invention middle HCSN embodiment illustrated in fig. 9.Compare with communication equipment embodiment illustrated in fig. 16, the communication equipment of this embodiment also comprises module 915, first memory module 917 and the 5th determination module 918 is set.Wherein, module 915 is set is used for after first receiver module 911 receives the DS-lite ability information of this ASN that ASN reports, the CS type of SF is set to GPCS.First memory module 917 is used for store M S user's service profile.The 5th determination module 918 is used for after first receiver module 911 receives the DS-lite ability information of this ASN that ASN reports, the DS-lite support policy and the ability of CSN distributing IP v4 address of the network side of determining according to the service profile of the MS user in first memory module 917, by the 3rd determination module 912 determine whether to authorize MS use DS-lite technology.Accordingly, distribution module 916 is used for the definite result according to the 5th determination module 918, when MS need use the DS-lite technology to obtain the IPv4 business, to MS distributing IP v6 address.First sending module 913 specifically to ASN issue the DS-lite ability of the network side of determining by the 3rd determination module 912, storage in advance the CGN address information, module 915 is set is SF and the CGN address information of GPCS with the CS type.

As shown in figure 18, be the structural representation of communication equipment embodiment seven of the present invention.The communication equipment of this embodiment can be realized the corresponding operating flow process of ASN among the above-mentioned DS-lite negotiation processing method of the present invention embodiment.It comprises second sending module 921 and second receiver module 922.Wherein, second sending module 921 is used for reporting to CSN the DS-lite ability information of this communication equipment.Second receiver module 922 is used to receive the DS-lite ability of CSN according to the network side of the DS-lite ability information transmission of described communication equipment.

As shown in figure 19, be the structural representation of communication equipment embodiment eight of the present invention.The communication equipment of this embodiment can be realized the corresponding operating flow process of the present invention middle ASN embodiment illustrated in fig. 5.Compare with communication equipment embodiment illustrated in fig. 18, among this embodiment, it is SF information, IPv6 address and the CGN address information that CS type that MS issues is set to IPv4 or IPv6 that second receiver module 922 also is used to receive CSN.Communication equipment among this embodiment also comprises second identification module 923 and active module 924.Wherein, second identification module 923 is used for the DS-lite mode of operation of the CS type identification MS of the SF information that receives according to second receiver module 922.Active module 924 is used for the recognition result according to second identification module 923, when the DS-lite of MS mode of operation adopts the DS-lite proxy mode to provide IPv4 professional for MS for authorizing ASN, activate the DS-lite agent functionality, and indicate second sending module 921 to issue well-known IPv4 address to MS, set up the SF of IPv4 business.Accordingly, second sending module 921 also is used for the recognition result according to second identification module 923, in the DS-lite of MS mode of operation is that MS adopts the DS-lite client mode to obtain IPv4 when professional, issue the CGN address information that second receiver module 922 receives to MS, set up the SF of IPv6 business.

On basis embodiment illustrated in fig. 19, second receiver module 922 also is used to receive the DS-lite ability information of the MS that MS sends.Accordingly, the second sending module 921 DS-lite ability information that also is used for MS that second receiver module 922 is received sends to CSN.The communication equipment of this embodiment can be realized the corresponding operating flow process among the present invention ASN embodiment illustrated in fig. 4.

As shown in figure 20, be the structural representation of communication equipment embodiment nine of the present invention.The communication equipment of this embodiment can be realized the corresponding operating flow process of the present invention middle ASN embodiment illustrated in fig. 6.Compare with communication equipment embodiment illustrated in fig. 18, among this embodiment, second receiver module 922 also is used to receive CS type information, IPv6 address and the CGN address information that CSN is the SF that issues of MS, and the CGN address request information that sends of MS.Accordingly, communication equipment also comprises the 3rd identification module 925 and active module 924.Wherein, the 3rd identification module 925 is used for the information that receives from CSN according to second receiver module 922, and the DS-lite mode of operation that whether receives the CGN address request information identification MS that MS sends.Active module 924 is used for the recognition result according to the 3rd identification module 925, when the DS-lite of MS mode of operation adopts the DS-lite proxy mode to provide IPv4 professional for MS for authorizing ASN, activate the DS-lite agent functionality, and indicate second sending module 921 to issue well-known IPv4 address to MS, initiate the SF of IPv4 business and the process of setting up of DP.Accordingly, second sending module 921 also is used for the recognition result according to the 3rd identification module 925, in the DS-lite of MS mode of operation is that MS adopts the DS-lite client mode to obtain IPv4 when professional, issue the CGN address information that receives from CSN by second receiver module 922 to MS, and CS type that initiate to revise SF is IPv6, and the process of setting up of the SF of IPv6 business and DP.

As shown in figure 21, be the structural representation of communication equipment embodiment ten of the present invention.The communication equipment of this embodiment can be realized the corresponding operating flow process of the present invention middle ASN embodiment illustrated in fig. 7.Compare with communication equipment embodiment illustrated in fig. 18, among this embodiment, second receiver module 922 also is used to receive CS type information, IPv6 address and the CGN address information that CSN is the SF that issues of MS, and the CGN address request information of MS transmission, second sending module 921 also is used for receiving the CS type when being the SF of IPv4 at second receiver module 922, initiates the SF of IPv4 business and the process of setting up of DP.Communication equipment also comprises the 4th identification module 926 and active module 924.It is that IPv4 presets stream that the 4th identification module 926 is used for whether having the CS type according to MS, whether receives any type of IPv4 address, and whether second receiver module 922 receives the CGN address request information that MS sends, the DS-lite mode of operation of identification MS.Active module 924 is used for the recognition result according to the 4th identification module 926, when the DS-lite of MS mode of operation adopts the DS-lite proxy mode to provide IPv4 professional for MS for authorizing ASN, activate the DS-lite agent functionality, and indicate second sending module 921 to issue well-known IPv4 address to MS.Accordingly, second sending module 921 also is used for the recognition result according to the 4th identification module 926, having the CS type at MS is IPv4 pre-provisioned service flow SF, but do not receive any type of IPv4 address, and when receiving the CGN Address requests of MS transmission, issue the CGN address information to MS, and CS type that initiate to revise SF is IPv6, and the process of setting up of the SF of IPv6 business and DP.

As shown in figure 22, be the structural representation of communication equipment embodiment 11 of the present invention.The communication equipment of this embodiment can be realized the corresponding flow process of the present invention middle ASN embodiment illustrated in fig. 8.Compare with communication equipment embodiment illustrated in fig. 18, among this embodiment, second receiver module 922 also is used to receive the DS-lite ability information of this MS that CGN address information, SF and IPv6 address that CSN issues and MS report, and receives the CGN address that MS sends and obtain solicited message.Communication equipment also comprises the 5th identification module 927 and active module 924.Wherein, the 5th identification module 927 is used for the DS-lite ability of the MS that receives according to second receiver module 922 and the DS-lite ability of network side, determine whether to authorize MS to use the DS-lite mode of operation, and when authorizing MS to use the DS-lite mode of operation, the DS-lite mode of operation of identification MS.Active module 924 is used for the recognition result according to the 5th identification module 927, when the DS-lite of MS mode of operation adopts the DS-lite proxy mode to provide IPv4 professional for MS for authorizing ASN, activate the DS-lite agent functionality, and indicate second sending module 921 to initiate the service flow SF of IPv4 business and the process of setting up of DP, and issue well-known IPv4 address to MS.Accordingly, second sending module 921 also is used for the recognition result according to the 5th identification module 927, in the DS-lite of MS mode of operation is that MS adopts the DS-lite client mode to obtain IPv4 when professional, and the CS type of initiating modification SF is IPv6, and the process of setting up of the SF of IPv6 business and DP, and the CGN address that receives according to second receiver module 922 obtains solicited message, issues the CGN address information to MS.

As shown in figure 23, be the structural representation of communication equipment embodiment 12 of the present invention.The communication equipment of this embodiment can be realized the corresponding operating flow process of the present invention middle ASN embodiment illustrated in fig. 9.Compare with communication equipment embodiment illustrated in fig. 18, among this embodiment, second receiver module 922 also is used to receive the CGN address information that CSN issues, CS type information and the IPv6 address of SF, and receives CGN address that MS sends and obtain the IPv4 business datum that solicited message and SF by the GPCS type send.Second sending module 921 also is used for after second receiver module 922 receives DS-lite ability, CGN address information, SF information and the IPv6 address of network side, the SF and the DP of GPCS type set up in triggering, and according to the recognition result of the 6th identification module 928, in the DS-lite of MS mode of operation is that MS adopts the DS-lite client mode to obtain IPv4 when professional, issues the CGN address information to MS.Communication equipment also comprises the 6th identification module 928 and active module 924.Wherein, the 6th identification module 928 is used for receiving the CGN address according to second receiver module 922 and obtains solicited message or IPv4 business datum, the DS-lite mode of operation of identification MS.Active module 924 is used for the recognition result according to the 6th identification module 928, when the DS-lite of MS mode of operation adopts the DS-lite proxy mode to provide IPv4 professional for MS for authorizing ASN, activate the DS-lite agent functionality, and indicate second sending module 921 to issue well-known IPv4 address to MS.

As shown in figure 24, be the structural representation of communication equipment embodiment 13 of the present invention.The communication equipment of this embodiment can be realized the corresponding operating flow process of the present invention middle ASN embodiment illustrated in fig. 10.Compare with communication equipment embodiment illustrated in fig. 18, among this embodiment, it is that the SF of IPv6 or IPv4 sets up request that second receiver module 922 also is used to receive CS type that MS sends, and receives the SF information that CSN sets up in service authorization success back, comprises the CS type of SF.Second sending module 921 also is used for the NAI and the corresponding session of well-known IPv4 allocation index according to MS, and initiates the service authorization request to CSN, comprises the session identification (ID) and the NAI of session in this service authorization request.Communication equipment also comprises the 7th identification module 929 and active module 924.Wherein, the 7th identification module 929 is used for according to described service authorization prompt for successful message, the CS type of authorizing successful SF and the DS-lite support policy of the network side that second receiver module 922 receives, the DS-lite mode of operation of identification MS.If do not carry the IPv4 address in the service authorization prompt for successful message, the CS type of authorizing successful SF is IPv4, and the DS-lite support policy of network side determines then that for can use DS-lite and can enable the DS-lite agent functionality described terminal use DS-lite proxy mode obtains the IPv4 business; If the IPv4 address of terminal is well-known IPv4 address, and to authorize the CS type of successful SF be IPv6, determines that then MS use DS-lite client mode obtains the IPv4 business.Active module 924 is used for the recognition result according to the 7th identification module 929, when the DS-lite of MS mode of operation adopts the DS-lite proxy mode to provide IPv4 professional for MS for authorizing ASN, activate the DS-lite agent functionality, and indicate second sending module 921 to issue well-known IPv4 address to MS, set up the SF of IPv4 business according to SF information.Accordingly, second sending module 921 also is used for the recognition result according to the 7th identification module 929, is that MS adopts the DS-lite client mode to obtain IPv4 when professional in the DS-lite of MS mode of operation, issues the CGN address information to MS.

As shown in figure 25, be the structural representation of communication equipment embodiment 14 of the present invention.The communication equipment of this embodiment can be used as MS, realizes the corresponding flow process of Fig. 4 of the present invention in embodiment illustrated in fig. 10, embodiment especially shown in Figure 5.The communication equipment of this embodiment comprises the first communication service processing module 930, the 3rd sending module 931 and the 3rd receiver module 932.Wherein, the first communication service processing module 930 is used for the well-known IPv4 address or the CGN address information that receive according to the 3rd receiver module 932, and sets up the SF of IPv4 business or the SF of IPv6 business between the ASN.The 3rd sending module 931 is used for sending the CGN address request information to ASN.The 3rd receiver module 932 is used to receive the CGN address information that CGN address request information that well-known IPv4 address that ASN issues and ASN send according to the 3rd sending module 931 issues.

In addition, above-mentioned communication equipment shown in Figure 25 can also comprise second memory module 933, is used for the DS-lite ability information of store M S.Accordingly, the 3rd sending module 931 also can be used for sending to ASN the DS-lite ability information of the MS of storage in second memory module 933.The communication equipment of this embodiment can be used for realizing the corresponding operating flow process of MS among the embodiment as shown in Figure 4.

In addition, on the basis of communication equipment embodiment shown in Figure 25, second memory module 933 is used for the DS-lite ability information of store M S.The first communication service processing module 930 can also be set up the SF of IPv4 business and DP with ASN or with ASN the CS type of the SF of IPv4 is revised as IPv6 and set up SF and the DP of IPv6.Accordingly, the 3rd sending module 931 also is used for sending to ASN the DS-lite ability information of MS, and after the first communication service processing module 930 is set up the SF and DP of IPv6 business with ASN, sends the CGN address request information to ASN.The 3rd receiver module 932 receives the well-known IPv4 address that ASN issues after the first communication service processing module 930 is set up the SF and DP of IPv4 business with ASN.The communication equipment of this embodiment can be used as MS, the corresponding flow process during realization the present invention is embodiment illustrated in fig. 8.

As shown in figure 26, be the structural representation of communication equipment embodiment 15 of the present invention.Compare with communication equipment embodiment illustrated in fig. 25, the communication equipment of this embodiment also comprises second memory module 933 and detection module 934.Wherein, second memory module 933 is used for the DS-lite ability information of store M S.Detection module 934 is used for the DS-lite ability information according to second memory module, 933 MS, detects MS and whether has the DS-lite ability.

Accordingly, as an embodiment, the 3rd sending module 931 when MS has the DS-lite ability, sends CGN address request information to ASN according to the testing result of detection module 934.When the first communication service processing module 930 receives the CGN address information at the 3rd receiver module 932, with ASN the CS type of the SF of IPv4 is revised as IPv6, and set up SF and the DP of IPv6, when the 3rd receiver module 932 does not receive the CGN address information, set up SF and the DP of IPv6 with ASN.The communication equipment of this embodiment can be used as MS, the corresponding flow process during realization the present invention is embodiment illustrated in fig. 6.

As another embodiment, the first communication service processing module 930 MS exist the CS type be IPv4 preset stream during SF, set up the SF and the DP of IPv4 business with ASN, and after the 3rd receiver module 932 receives the CGN address information that ASN issues, with ASN the CS type of SF is revised as IPv6, and sets up SF and the DP of IPv6.The 3rd sending module 931 when MS has the DS-lite ability, sends CGN address request information to ASN according to the testing result of detection module 934.It is that MS activates the well-known IPv4 address that issues behind the DS-lite agency that the 3rd receiver module 932 also is used to receive ASN.The communication equipment of this embodiment can be used as MS, the corresponding flow process during realization the present invention is embodiment illustrated in fig. 7.

As another embodiment, the 3rd sending module 931 is used for the testing result according to detection module 934, when MS does not have the DS-lite ability, sends the SF foundation request that the CS type is IPv4 to ASN, when MS has the DS-lite ability, send the SF foundation request that the CS type is IPv6 to ASN.The first communication service processing module 930 is used for the CGN address information or the well-known IPv4 address that receive according to the 3rd receiver module 932, and sets up the SF of IPv4 business or the SF of IPv6 business between the ASN.The 3rd receiver module 932 is used for after setting up the SF of IPv6 business between the first communication service processing module 930 and the ASN, receive the CGN address information that ASN issues, after setting up the SF of IPv4 business between the first communication service processing module 930 and the ASN, receive the well-known IPv4 address that ASN issues.The communication equipment of this embodiment can be used as MS, the corresponding flow process during realization the present invention is embodiment illustrated in fig. 10.

As shown in figure 27, be the structural representation of communication equipment embodiment 16 of the present invention.The communication equipment of this embodiment can be used as MS, the corresponding flow process during realization the present invention is embodiment illustrated in fig. 9.The communication equipment of this embodiment comprises second communication Service Processing Module 935, second memory module 933, detection module 934, the 3rd sending module 931 and the 3rd receiver module 932.Wherein, second communication Service Processing Module 935 be used for and ASN between set up the SF and the DP of GPCS type.Second memory module 933 is used for the DS-lite ability information of store M S.Detection module 934 is used for the DS-lite ability information according to second memory module, 933 MS, detects MS and whether has the DS-lite ability.The 3rd sending module 931 is used for behind the SF and DP that set up the GPCS type between second communication Service Processing Module 935 and the ASN, testing result according to detection module 934, when MS has the IPv4 business demand and has the DS-lite ability, send the CGN address to ASN and obtain solicited message, when MS had the IPv4 business demand but do not have the DS-lite ability, the SF by the GPCS type sent the IPv4 business datum to ASN.The 3rd receiver module 932 is used to receive ASN and obtains the CGN address information that solicited message issues according to the CGN address that the 3rd sending module 931 sends, and receives the well-known IPv4 address that issues behind the ASN activation DS-lite agent functionality.

As shown in figure 28, be the structural representation of communication system embodiment of the present invention.The communication system of this embodiment can be used for realizing the flow process as each embodiment of the above-mentioned DS-lite negotiation processing method of the present invention.It comprises that MS1, ASN2 and DS-lite handle device 3 through consultation.Wherein, DS-lite handles the DS-lite ability information that device 3 is used to obtain ASN2 and MS1 through consultation, and according to the DS-lite ability information of MS1 and ASN2, determines the DS-lite mode of operation of MS.

Particularly, the DS-lite in embodiment illustrated in fig. 28 handles device 3 through consultation and can handle device by DS-lite embodiment illustrated in fig. 11 through consultation and realize.

A kind of communication system that the embodiment of the invention provides, comprise MS, ASN and CSN, comprise that also DS-lite handles device through consultation, be used to obtain the DS-lite ability information of ASN, CSN and MS, and, determine the DS-lite mode of operation of MS terminal according to the DS-lite ability information of ASN, CSN and MS.Particularly, the DS-lite processing unit can be according to the DS-lite ability information of ASN and CSN, determine the DS-lite support policy of network side, and, determine the DS-lite mode of operation of MS according to the DS-lite ability information of the DS-lite support policy and the MS of this network side.

In addition, the embodiment of the invention also provides a plurality of communication systems, is used to realize each embodiment flow process of the above-mentioned DS-lite negotiation processing method of the present invention.As one of them communication system, comprise communication equipment embodiment illustrated in fig. 18 and communication equipment embodiment illustrated in fig. 12, can realize flow process as the present invention's DS-lite negotiation processing method shown in Figure 3 embodiment.

Another communication system that inventive embodiments provides comprises MS, ASN and CSN.When MS adopts Figure 25 or communication equipment embodiment illustrated in fig. 26, if ASN adopts the communication equipment of second embodiment among Figure 19, CSN adopts the communication equipment of embodiment shown in Figure 13, can realize the flow process as the present invention's DS-lite negotiation processing method shown in Figure 4 embodiment; If ASN adopts the communication equipment of first embodiment among Figure 19, CSN adopts communication equipment embodiment illustrated in fig. 14, can realize the flow process as the present invention's DS-lite negotiation processing method shown in Figure 5 embodiment; If ASN adopts communication equipment embodiment illustrated in fig. 20, CSN adopts communication equipment embodiment illustrated in fig. 15, can realize the flow process as the present invention's DS-lite negotiation processing method shown in Figure 6 embodiment; If ASN adopts communication equipment embodiment illustrated in fig. 21, CSN adopts communication equipment embodiment illustrated in fig. 15, can realize the flow process as the present invention's DS-lite negotiation processing method shown in Figure 7 embodiment; If ASN adopts communication equipment embodiment illustrated in fig. 22, CSN adopts communication equipment embodiment illustrated in fig. 15, can realize the flow process as the present invention's DS-lite negotiation processing method shown in Figure 8 embodiment.If MS adopts communication equipment embodiment illustrated in fig. 26, ASN adopts communication equipment embodiment illustrated in fig. 24, can realize the flow process as the present invention's DS-lite negotiation processing method shown in Figure 11 embodiment.If MS adopts communication equipment embodiment illustrated in fig. 27, ASN adopts communication equipment embodiment illustrated in fig. 23, and CSN adopts communication equipment embodiment illustrated in fig. 17, can realize the flow process as the present invention's DS-lite negotiation processing method shown in Figure 10 embodiment.

One of ordinary skill in the art will appreciate that: all or part of step that realizes said method embodiment can be finished by the relevant hardware of program command, aforesaid program can be stored in the computer read/write memory medium, this program is carried out the step that comprises said method embodiment when carrying out; And aforesaid storage medium comprises: various media that can be program code stored such as ROM, RAM, magnetic disc or CD.

The embodiment of the invention can be according to the DS-lite ability information of ASN, CSN and MS, determine the DS-lite ability of network side, thereby determine whether communication network supports the DS-lite technology, and the DS-lite mode of operation of definite MS, make each functional entity in the communication network can know the DS-lite ability of communication network and the DS-lite mode of operation information of MS, thereby satisfy the demand that the MS needs use IPv6 and IPv4 to serve simultaneously in the communication network, realize the transition of IPv4, effectively provide the user needed service to the user to IPv6.

It should be noted last that: above embodiment is only in order to illustrating technical scheme of the present invention, but not the present invention is made restrictive sense.Although the present invention is had been described in detail with reference to above-mentioned preferred embodiment, those of ordinary skill in the art is to be understood that: it still can make amendment or be equal to replacement technical scheme of the present invention, and this modification or be equal to the spirit and scope that replacement does not break away from technical solution of the present invention.

Claims

1. a light-weight dual-stack negotiation processing method is characterized in that, comprising:

2. method according to claim 1 is characterized in that, the described DS-lite ability information of obtaining access service network ASN and terminal comprises:

Described terminal reports described ASN with the DS-lite ability information of this terminal when access network;

Described ASN reports connection service network CSN with the DS-lite ability information of described terminal and described ASN in the verification process of described accessing terminal to network;

Described DS-lite ability information according to ASN and terminal, the DS-lite mode of operation of determining described terminal comprises: described CSN is according to the DS-lite ability information of described terminal and described ASN and the ability of described CSN assigns the Internet protocol the 4th version IPv4 address, determine the DS-lite mode of operation of described terminal employing and the DS-lite support policy of network side, the DS-lite support policy of described network side is used to represent whether described network side supports DS-lite.

3. method according to claim 1 is characterized in that, the DS-lite ability information of described terminal is specially described terminal use's DS-lite ability CAMEL-Subscription-Information;

The DS-lite ability information of obtaining ASN and terminal is specially: described ASN reports connection service network CSN with the DS-lite ability information of described ASN in the verification process of described accessing terminal to network;

Described DS-lite ability information according to ASN and terminal, the DS-lite mode of operation of determining described terminal comprises: described CSN is according to described terminal use's DS-lite ability CAMEL-Subscription-Information and the DS-lite ability information of described ASN and the ability of described CSN distributing IP v4 address, determine the DS-lite mode of operation of described terminal employing and the DS-lite support policy of network side, the DS-lite support policy of described network side is used to represent whether described network side supports DS-lite.

4. method according to claim 1 is characterized in that, described DS-lite ability information according to ASN and terminal determines that the DS-lite mode of operation of described terminal comprises:

According to the DS-lite ability information of ASN and connection service network CSN, determine the DS-lite support policy of network side, the DS-lite support policy of described network side is used to represent whether described network side supports DS-lite;

According to the DS-lite support policy of described network side and the DS-lite ability information of described terminal, determine the DS-lite mode of operation of described terminal.

5. method according to claim 1 is characterized in that, described DS-lite ability information according to ASN and terminal determines that the DS-lite mode of operation of described terminal comprises: described ASN reports the DS-lite ability information of this ASN to described CSN;

Described CSN determines the DS-lite support policy of network side according to the DS-lite ability information of described ASN, and the DS-lite support policy of described network side is used to represent whether described network side supports DS-lite;

Described CSN determines the DS-lite mode of operation of described terminal according to the DS-lite support policy of described network side and the DS-lite ability information of described terminal; Perhaps, described CSN returns the DS-lite support policy of described network side to described ASN, and described ASN determines the DS-lite mode of operation of described terminal according to the DS-lite support policy of described network side and the DS-lite ability information of described terminal.

6. method according to claim 5, it is characterized in that, described ASN reports the DS-lite ability information of this ASN to be specially to CSN: described ASN is in described accessing terminal to network verification process, by inserting request message reports DS-lite ability information from this ASN to described CSN;

Described CSN is specially to the DS-lite support policy that described ASN returns described network side: described CSN accepts message by access in described accessing terminal to network verification process, returns the DS-lite support policy of described network side to described ASN.

7. method according to claim 5 is characterized in that, the described DS-lite ability information of obtaining access service network ASN and terminal comprises:

Described ASN reports described CSN with the DS-lite ability information of described terminal in the access network verification process of described terminal;

According to the DS-lite support policy of described network side and the DS-lite ability information of terminal, the DS-lite mode of operation of determining described terminal comprises: described CSN is according to the DS-lite support policy of the DS-lite ability information of described terminal, described network side and the ability of described CSN distributing IP v4 address, determine whether to authorize described terminal to use the DS-lite technology, and when authorizing described terminal to use the DS-lite technology, determine the DS-lite mode of operation of described terminal.

8. according to claim 2,3 or 7 described methods, it is characterized in that, the DS-lite mode of operation of determining described terminal is specially: described CSN supports DS-lite and has the IPv4 business demand in described terminal, and described CSN is not in the time of using DS-lite for the DS-lite support policy of the ability of described terminal distribution IPv4 address and described network side, determines that described terminal adopts the DS-lite client mode to obtain the IPv4 business; Described CSN does not support DS-lite in described terminal but has the IPv4 business demand, and described CSN not for the DS-lite support policy of the ability of described terminal distribution IPv4 address and described network side for can use DS-lite and can enable the DS-lite agent functionality time, authorize described ASN to adopt the DS-lite proxy mode to provide IPv4 business for described terminal.

9. method according to claim 7 is characterized in that, described terminal reports described ASN with the DS-lite ability information of this terminal and comprises when access network:

Described terminal by the basic capability negotiating request message, reports base station BS among the described ASN with the DS-lite ability information of this terminal when access network; Described BS is by the terminal request message that networks, and the DS-lite ability information of this terminal is reported Access Service Network Gateway ASN GW among the described ASN;

Described ASN is in the access network verification process of described terminal, the DS-lite ability information of described terminal is reported described CSN to be specially: described ASN GW reports described CSN with the DS-lite ability information of described terminal in the access network verification process of described terminal.

10. method according to claim 5 is characterized in that, the DS-lite ability information of described terminal is specially described terminal use's DS-lite ability CAMEL-Subscription-Information;

According to the DS-lite support policy of described network side and the DS-lite ability information of terminal, the DS-lite mode of operation of determining described terminal comprises: described CSN is according to the DS-lite support policy of described terminal use's DS-lite ability CAMEL-Subscription-Information, described network side and the ability of described CSN distributing IP v4 address, determine whether to authorize described terminal to use the DS-lite technology, and when authorizing described terminal to use the DS-lite technology, determine the DS-lite mode of operation of described terminal.

11. according to claim 2,3,7,9 or 10 described methods, it is characterized in that, the DS-lite mode of operation of determining described terminal is specially: determine that described terminal adopts the DS-lite client mode to obtain the IPv4 business, or authorize described ASN to adopt the DS-lite proxy mode to provide IPv4 business for described terminal;

When determining that described terminal adopts the DS-lite client mode to obtain the IPv4 business, the Convergence Sublayer CS type that described CSN presets service flow SF is set to IPv6, when authorizing described ASN to adopt the DS-lite proxy mode to provide IPv4 professional for described terminal, the CS type that described CSN presets SF is set to IPv4;

Described CSN issues IP address, the operation level network address translation CGN address information and the CS type information that presets SF of described terminal to described ASN;

Described ASN is according to the IP address of CS type and the described terminal of described SF, discern the DS-lite mode of operation of described terminal, when authorizing described terminal to adopt the DS-lite client mode to obtain the IPv4 business, issue described CGN address information to described terminal, so that described terminal is obtained the IPv4 business according to this CGN address information; When authorizing described ASN to adopt the DS-lite proxy mode to provide IPv4 professional for described terminal, activate the DS-lite agent functionality, and issue well-known IPv4 address to described terminal, so that described ASN adopts the DS-lite proxy mode to provide IPv4 business for described terminal.

12. method according to claim 11, it is characterized in that, issuing described CGN address information to described terminal is specially: described ASN issues described CGN address information by this dynamic host configuration protocol DHCP of sixth version v6 response message, routing broadcast message or binding update messages to described terminal;

Issuing well-known IPv4 address to described terminal is specially: described ASN issues well-known IPv4 address by the 4th version dynamic host configuration protocol DHCP v4 acknowledge message, the 4th version mobile IP registration response message or routing broadcast message to described terminal.

13. method according to claim 5 is characterized in that, described ASN reports the DS-lite ability information of this ASN to be specially to CSN: in the access network verification process of described ASN in described terminal, report the DS-lite ability information of this ASN to described CSN;

Described CSN determines after the DS-lite support policy of network side according to the DS-lite ability information of described ASN, also comprise: described CSN is according to the DS-lite support policy of described terminal use's service profile, described network side and the ability of described CSN distributing IP v4 address, and whether discern described terminal needs to use the DS-lite technology to obtain the IPv4 business;

Described CSN is specially to the DS-lite support policy that described ASN returns network side: when described CSN need use the DS-lite technology to obtain the IPv4 business in described terminal, in the access network verification process of described terminal, the DS-lite support policy from described network side to described ASN, CGN address information and the CS type that issue are the CS type information that presets SF of IPv4.

Whether 14. method according to claim 13 is characterized in that, discerning described terminal needs to use the DS-lite technology to obtain IPv4 when professional, and whether also discern described terminal is dual stack node;

Described CSN is specially to the DS-lite ability that described ASN returns network side: described CSN is dual stack node and need uses the DS-lite technology to obtain IPv4 when professional in described terminal, in the access network verification process of described terminal, issue DS-lite support policy, the CGN address information of described network side and preset the CS type information of SF to described ASN;

The DS-lite mode of operation of determining described terminal comprises:

Described terminal detects this terminal and whether has the DS-lite ability, and when described terminal has the DS-lite ability, sends the CGN address request information to described ASN;

Described ASN is when receiving the CGN address request information, determine described terminal use DS-lite client mode, issue the CGN address information to described terminal, so that described terminal is obtained the IPv4 business according to this CGN address information, and CS type that initiate to revise SF is IPv6, and the process of setting up of the SF of IPv6 and data channel DP;

Described ASN is not when receiving the CGN address request information, determine to authorize described ASN to adopt the DS-lite proxy mode to provide IPv4 business for described terminal, activate the DS-lite agent functionality, and the SF of initiation IPv4 business and the process of setting up of DP, and issue well-known IPv4 address to described terminal, so that described ASN adopts the DS-lite proxy mode to provide IPv4 business for described terminal.

15. method according to claim 13 is characterized in that, determines that the DS-lite mode of operation of described terminal comprises:

When described ASN need use the DS-lite technology in described terminal, initiate the SF of IPv4 and the process of setting up of DP;

Described terminal detects the DS-lite ability of this terminal, and when described terminal has the DS-lite ability, sends the CGN address request information to described ASN;

Described ASN is when receiving the CGN address request information, determine described terminal use DS-lite client mode, with the CS type is that the CS type that presets SF of IPv4 is revised as IPv6, the SF and the DP that initiate the IPv4 business set up process, and issue the CGN address information to described terminal, so that described terminal is obtained the IPv4 business according to this CGN address information;

Described ASN is not when receiving the CGN address request information, determine that described ASN adopts the DS-lite proxy mode to provide IPv4 business for described terminal, activate the DS-lite agent functionality, issue well-known IPv4 address to described terminal, so that described ASN adopts the DS-lite proxy mode to provide IPv4 business for described terminal.

16. method according to claim 13 is characterized in that, also comprises: described terminal reports described ASN with the DS-lite ability information of this terminal;

The DS-lite mode of operation of determining described terminal comprises: described ASN is according to the IP address of described terminal, preset the CS type information of SF, the DS-lite support policy of described network side and the DS-lite ability information of described terminal, determine whether described terminal needs to use the DS-lite technology to obtain the IPv4 business, and when described terminal need use the DS-lite technology to obtain the IPv4 business, determine the DS-lite mode of operation of described terminal, determine that the DS-lite mode of operation of described terminal comprises that definite described terminal adopts the DS-lite client mode to obtain the described ASN employing of the professional or definite mandate of IPv4 DS-lite proxy mode and provides IPv4 business for described terminal; If determine to authorize described ASN to adopt the DS-lite proxy mode to provide IPv4 business for described terminal, then activate the DS-lite agent functionality, trigger the foundation of the service flow SF of IPv4 business, and issue well-known IPv4 address to described terminal, so that described ASN adopts the DS-lite proxy mode to provide IPv4 business for described terminal; Adopt the DS-lite client mode to obtain the IPv4 business if determine described terminal, the CS type of then revising SF is IPv6, and the SF of initiation IPv6 business and the process of setting up of DP, and when receiving the CGN address request information of described terminal transmission, issue the CGN address information to described terminal, so that described terminal is obtained the IPv4 business according to this CGN address information.

17. method according to claim 5 is characterized in that, described ASN reports the DS-lite ability information of this ASN to be specially to CSN: in the access network verification process of described ASN in described terminal, report the DS-lite ability information of this ASN to described CSN;

Described CSN comprises to the DS-lite support policy that described ASN returns network side: when described CSN need use the DS-lite technology to obtain the IPv4 business in described terminal, in the access network verification process of described terminal, the DS-lite support policy from described network side to described ASN, CGN address information and the CS type that issue are the CS type information that presets SF of general convergence sub-layer GPCS; Described ASN receive described network side DS-lite support policy, CGN address information, preset the CS type information and IPv6 address of SF after, trigger SF and the DP set up the GPCS type;

The DS-lite mode of operation of determining described terminal comprises:

When described terminal has the IPv4 business demand,, send the CGN address request information to described ASN if described terminal has the DS-lite ability; If described terminal do not have the DS-lite ability, the SF by the GPCS type sends the IPv4 business datum to described ASN;

Described ASN is when receiving the CGN address request information, if the DS-lite support policy of described network side is for can use DS-lite, and CSN is that described terminal issues the IPv4 address, then determine described terminal use DS-lite client mode, issue the CGN address information to described terminal, so that described terminal is obtained the IPv4 business according to this CGN address information;

Described ASN is when receiving the IPv4 business datum, if the DS-lite support policy of described network side is for can use DS-lite and can enable the DS-lite agent functionality, and CSN does not issue any IPv4 address for described terminal, then determine described terminal use DS-lite proxy mode, described ASN activates described DS-lite agent functionality, and issue well-known IPv4 address to described terminal, so that described ASN adopts the DS-lite proxy mode to provide IPv4 business for described terminal.

18. method according to claim 5 is characterized in that, determines that the DS-lite mode of operation of described terminal comprises:

Application Function AF interactive application layer signaling among described terminal and the described CSN;

Strategy and charging regulation function entity PCRF among described AF and the described CSN carry out service authorization, and described AF sends the network access Identifier NAI and the well-known IPv4 address of described terminal to described PCRF;

Described terminal detects the DS-lite ability of this terminal, and when described terminal does not have the DS-lite ability, send the SF foundation request that the CS type is IPv4 to described ASN, when described terminal has the DS-lite ability, send the SF foundation request that the CS type is IPv6 to described ASN;

After described ASN receives the SF foundation request that the CS type is IPv4, NAI and the corresponding session of well-known IPv4 allocation index according to described terminal, and to described PCRF initiation service authorization request message, and receive the service authorization prompt for successful message that described PCRF returns; If do not carry the IPv4 address in this service authorization prompt for successful message, and the DS-lite support policy of described network side is for can use DS-lite and can enable the DS-lite agent functionality, determine that then described terminal use DS-lite proxy mode obtains the IPv4 business, and activate described DS-lite agent functionality, and issue well-known IPv4 address to described terminal, so that described ASN adopts the DS-lite proxy mode to provide IPv4 business for described terminal;

After described ASN receives the SF foundation request that the CS type is IPv6, the session corresponding with the IPv6 allocation index according to the NAI of described terminal, and to described PCRF initiation service authorization request message, and receive the service authorization prompt for successful message that described PCRF returns; If the IPv4 address of described terminal is well-known IPv4 address, determine that then described terminal use DS-lite client mode obtains the IPv4 business, issue described CGN address information to described terminal, so that described terminal is obtained the IPv4 business according to this CGN address information.

19. according to any described method of claim 14-18, it is characterized in that, sending the CGN address request information to described ASN is specially: described terminal sends the CGN address request information by DHCPv6 request message, route request information or Binding Update request message to described ASN;

Issuing described CGN address information to described terminal is specially: described ASN issues described CGN address information by DHCPv6 response message, routing broadcast message or binding update messages to described terminal;

Issuing well-known IPv4 address to described terminal is specially: described ASN issues well-known IPv4 address by DHCPv4 acknowledge message, the 4th version mobile IP registration response message or routing broadcast message to described terminal.

20., it is characterized in that described CSN comprises the ownership place connection service network HCSN of described terminal and the visit ground connection service network VCSN of described terminal according to claim 4-7 and any described method of 9-14;

Described ASN reports the DS-lite ability information of this ASN to comprise to described CSN: described ASN sends to described VCSN with the DS-lite ability information of this ASN; Described VCSN sends to described HCSN with the DS-lite ability information of this VCSN and the DS-lite ability information of described ASN;

The DS-lite ability of described definite network side is specially: described HCSN determines the DS-lite support policy of network side according to the DS-lite ability information of described ASN and described VCSN;

Described CSN comprises to the DS-lite support policy that described ASN returns network side: described HCSN sends to described VCSN with the DS-lite support policy of described network side; Described VCSN is transmitted to described ASN with the DS-lite support policy of described network side.

21. method according to claim 20, it is characterized in that, described ASN sends to described VCSN with the DS-lite ability information of this ASN and is specially: described ASN sends to described VCSN by inserting request message with the DS-lite ability information of this ASN in described accessing terminal to network verification process; And/or

Described VCSN sends to described HCSN with the DS-lite ability information of the DS-lite ability information of this VCSN and described ASN and is specially: described VCSN sends to described HCSN by inserting request message with the DS-lite ability information of this VCSN and the DS-lite ability information of described ASN in described accessing terminal to network verification process; And/or

Described HCSN sends to described VCSN with the DS-lite support policy of described network side and is specially: described HCSN accepts message by access the DS-lite support policy of described network side is sent to described VCSN in described accessing terminal to network verification process; And/or

Described VCSN is transmitted to described ASN with the DS-lite support policy of described network side and is specially: described VCSN accepts message by access the DS-lite support policy of described network side is transmitted to described ASN in described accessing terminal to network verification process.

22. method according to claim 20 is characterized in that, the ability information of the DS-lite of described ASN is: do not support DS-lite, support DS-lite but do not possess the DS-lite agent capability or support DS-lite and possess the DS-lite agent capability;

The ability information of the DS-lite of described VCSN is specially: can not provide operation level network address translation CGN maybe can provide CGN;

The DS-lite ability of described network side is specially: can not use DS-lite, can use DS-lite but can not enable the DS-lite agent functionality and maybe can use DS-lite and can enable the DS-lite agent functionality;

The ability information of the DS-lite of described terminal is specially: support DS-lite or do not support DS-lite.

23. method according to claim 22 is characterized in that, determines that according to the DS-lite ability information of described ASN and described VCSN the DS-lite support policy of network side is specially:

If the ability information of the DS-lite of described ASN is not for supporting DS-lite, then the DS-lite support policy of described network side is for can not use DS-lite;

If the ability information of the DS-lite of described ASN is for supporting DS-lite but do not possess the DS-lite agent capability, then the DS-lite support policy of described network side is for using DS-lite but can not enable the DS-lite agent functionality; If the ability information of the DS-lite of described VCSN is for providing CGN, then the DS-lite support policy of described network side comprises that also VCSN issues the CGN address information to ASN;

If the ability information of the DS-lite of described ASN is for supporting DS-lite and possess the DS-lite agent capability that then the DS-lite support policy of described network side is for can use DS-lite and can enable the DS-lite agent functionality; If the ability information of the DS-lite of described VCSN is for providing CGN, then the DS-lite support policy of described network side comprises that also VCSN issues the CGN address information to ASN.

24. a light-weight dual-stack is handled device through consultation, it is characterized in that, comprising:

25. device according to claim 24 is characterized in that, described acquisition module also is used to obtain the DS-lite ability information of CSN;

Described device also comprises second determination module, is used for the DS-lite ability information according to described ASN and CSN, determines the DS-lite support policy of network side;

Described first determination module is determined the DS-lite mode of operation of described terminal according to the DS-lite support policy of described network side and the DS-lite ability information of described terminal.

26. a communication equipment is characterized in that, comprising:

27. communication equipment according to claim 26 is characterized in that, described first receiver module specifically is used to receive the DS-lite ability information of the described VCSN that the VCSN of described terminal sends and the DS-lite ability information of described ASN;

Described the 3rd determination module specifically is used for determining the DS-lite support policy of network side according to the DS-lite ability information of described ASN and the DS-lite ability information of described VCSN;

Described first sending module specifically is used for sending to described ASN by described VCSN the DS-lite support policy of described network side.

28., it is characterized in that described first receiver module also is used to receive the DS-lite ability information of described terminal according to claim 26 or 27 described communication equipments;

Described communication equipment also comprises:

The 4th determination module, be used for according to the DS-lite support policy of the DS-lite ability of described terminal, described network side and the ability of described CSN distributing IP v4 address, determine whether to authorize described terminal to use the DS-lite technology, and when authorizing described terminal to use the DS-lite technology, the DS-lite mode of operation of determining described terminal is DS-lite client mode or DS-lite proxy mode; Perhaps be used for according to the DS-lite ability of described terminal, described ASN and the ability of described CSN distributing IP v4 address, directly determine whether to authorize described terminal to use the DS-lite mode of operation of DS-lite technology and described terminal;

Module is set, be used for definite result according to described the 4th determination module, when the DS-lite of described terminal mode of operation is the DS-lite client mode, the CS type of SF is set to IPv4, when the DS-lite of described terminal mode of operation was the DS-lite proxy mode, the CS type of SF was set to IPv6;

Distribution module is used for to described terminal distribution IPv6 address;

Described first sending module also is used for issuing to described ASN CS type information, described IPv6 address and the CGN address information of SF.

29. according to claim 26 or 27 described communication equipments, it is characterized in that, also comprise:

First memory module is used to store described terminal use's DS-lite ability CAMEL-Subscription-Information;

The 5th determination module, be used for according to the DS-lite support policy of described terminal use's DS-lite ability CAMEL-Subscription-Information, described network side and the ability of described CSN distributing IP v4 address, determine whether to authorize described terminal to use the DS-lite technology, and when authorizing described terminal to use the DS-lite technology, the DS-lite mode of operation of determining described terminal is DS-lite client mode or DS-lite proxy mode; Perhaps be used for according to the DS-lite ability of described terminal, described ASN and the ability of described CSN distributing IP v4 address, directly determine whether to authorize described terminal to use the DS-lite mode of operation of DS-lite technology and described terminal;

Module is set, be used to be provided with the CS type of SF, definite result according to described the 5th determination module, when the DS-lite of described terminal mode of operation is the DS-lite client mode, the CS type of SF is set to IPv6, when the DS-lite of described terminal mode of operation was the DS-lite proxy mode, the CS type of SF was set to IPv4;

Described first sending module also is used for issuing the CS type information of SF, the IPv6 address and the CGN address information of distribution to described ASN.

30. according to claim 26 or 27 described communication equipments, it is characterized in that, also comprise:

First memory module is used to store described terminal use's service profile;

First identification module is used for the DS-lite support policy of the service profile according to described terminal use, described network side and the ability of described CSN distributing IP v4 address, and whether discern described terminal needs to use the DS-lite technology to obtain the IPv4 business;

Described first sending module is according to the recognition result of described first identification module, when described terminal need use the DS-lite technology to obtain the IPv4 business, in the access network verification process of described terminal, issue DS-lite support policy, CGN address information, the CS type information of SF and the IPv6 address of described module assigns of described network side to described ASN.

31. communication equipment according to claim 30, it is characterized in that, described first identification module also is used for the DS-lite support policy of the service profile according to described terminal use, described network side and the ability of described CSN distributing IP v4 address, and whether discern described terminal is dual stack node;

Described first sending module is according to the recognition result of described first identification module, be dual stack node and need use the DS-lite technology to obtain IPv4 when professional in described terminal, in the access network verification process of described terminal, issue DS-lite support policy, CGN address information, the CS type information of SF and the IPv6 address of described module assigns of described network side to described ASN.

32. according to claim 26 or 27 described communication equipments, it is characterized in that, also comprise:

Judge module is used for judging according to the DS-lite support policy of described network side and the ability of described CSN distributing IP v4 address whether described user terminal needs to use the DS-lite technology to obtain the IPv4 business;

Distribution module is used for the judged result according to described judge module, when described user terminal need use the DS-lite technology to obtain the IPv4 business, to described user terminal distributing IP v6 address;

Described first sending module specifically issues DS-lite support policy, the CGN address information of described network side, CS type information and the described IPv6 address of SF to described ASN.

33. communication equipment according to claim 32 is characterized in that, also comprises:

Module is set, and the CS type that is used for SF is set to GPCS;

First memory module is used to store described terminal use's service profile;

The 5th determination module, be used for after described first receiver module receives the DS-lite ability information of described ASN, according to the DS-lite support policy of described terminal use's service profile, described network side and the ability of described CSN distributing IP v4 address, determine whether to authorize described terminal to use the DS-lite technology;

Described distribution module is according to definite result of described the 5th determination module, when described user terminal need use the DS-lite technology to obtain the IPv4 business, to described user terminal distributing IP v6 address;

Described first sending module specifically issues DS-lite support policy, the CGN address information of described network side, CS type information, described IPv6 address and the CGN address information of SF to described ASN.

34. a communication equipment is characterized in that, comprising:

35. communication equipment according to claim 34 is characterized in that, described second receiver module also is used to receive CS type information, IPv6 address and the CGN address information that described CSN is the SF that issues of described terminal;

Second identification module is used for the DS-lite mode of operation according to the described terminal of CS type identification of described SF;

Active module, be used for recognition result according to described second identification module, when the DS-lite of described terminal mode of operation adopts the DS-lite proxy mode to provide IPv4 professional for described terminal for authorizing ASN, activate described DS-lite proxy mode, and indicate described second sending module to issue well-known IPv4 address to described terminal, set up the SF of IPv4 business;

Described second sending module also is used for the recognition result according to described second identification module, in the DS-lite of described terminal mode of operation is that described terminal adopts the DS-lite client mode to obtain IPv4 when professional, issue described CGN address information to described terminal, set up the SF of IPv6 business.

36. communication equipment according to claim 35 is characterized in that, described second receiver module also is used to receive the DS-lite ability information of the described terminal that described terminal sends;

Described second sending module also is used for the DS-lite ability information of described terminal is sent to described CSN.

37. communication equipment according to claim 36 is characterized in that, described second receiver module also is used to receive the CGN address information that described terminal sends and obtains solicited message;

Described communication equipment also comprises:

The 3rd identification module is used for discerning according to the CS type information that whether receives CGN address request information that described terminal sends, IP address that described CSN issues and SF the DS-lite mode of operation of described terminal;

Active module, be used for recognition result according to described the 3rd identification module, when the DS-lite of described terminal mode of operation adopts the DS-lite proxy mode to provide IPv4 professional for described terminal for authorizing ASN, activate described DS-lite proxy mode, and indicate described second sending module to issue well-known IPv4 address, and initiate the SF of IPv4 business and the process of setting up of DP to described terminal;

Described second sending module also is used for the recognition result according to described the 3rd identification module, in the DS-lite of described terminal mode of operation is that described terminal adopts the DS-lite client mode to obtain IPv4 when professional, issue described CGN address information to described terminal, and initiate the CS type of SF is revised as process and the SF of IPv6 business and the process of setting up of DP of IPv6.

38. communication equipment according to claim 34, it is characterized in that, described second receiver module also is used to receive CS type information and the CGN address information that described CSN is the SF that issues of described terminal, and the CGN address information that described terminal sends is obtained solicited message;

Described second sending module also is used for receiving the CS type when being the SF of IPv4 at second receiver module, initiates the SF of IPv4 business and the process of setting up of DP;

Described communication equipment also comprises:

The 4th identification module, being used for whether having the CS type according to terminal is that IPv4 presets stream, whether receive any type of IPv4 address, and whether second receiver module receive the CGN address request information that described terminal sends, discern the DS-lite mode of operation of described terminal;

Active module, be used for recognition result according to described the 4th identification module, when the DS-lite of described terminal mode of operation adopts the DS-lite proxy mode to provide IPv4 professional for described terminal for authorizing ASN, activate described DS-lite proxy mode, and indicate described second sending module to issue well-known IPv4 address to described terminal;

Described second sending module also is used for the recognition result according to described the 4th identification module, having the CS type in described terminal is when stream of presetting of IPv4, but do not receive any type of IPv4 address, and when receiving the CGN Address requests of MS transmission, issue the CGN address information to MS, and CS type that initiate to revise SF is IPv6, and the process of setting up of the SF of IPv6 business and DP.

39. communication equipment according to claim 34, it is characterized in that, described second receiver module also is used to receive the DS-lite ability information of this terminal of CS type information, IPv6 address and the described terminal to report of CGN address information that described CSN issues, SF, and receives the CGN address that described terminal sends and obtain solicited message;

Described communication equipment also comprises:

The 5th identification module, be used for according to the DS-lite ability of described terminal and the DS-lite support policy of described network side, determine whether to authorize described terminal to use the DS-lite technology, and when authorizing described terminal to use the DS-lite technology, discern the DS-lite mode of operation of described terminal;

Active module, be used for recognition result according to described the 5th identification module, when the DS-lite of described terminal mode of operation adopts the DS-lite proxy mode to provide IPv4 professional for described terminal for authorizing ASN, activate described DS-lite proxy mode, and indicate described second sending module to initiate the service flow SF of IPv4 business and the process of setting up of DP, and issue well-known IPv4 address to described terminal;

Described second sending module also is used for the recognition result according to described the 5th identification module, in the DS-lite of described terminal mode of operation is that described terminal adopts the DS-lite client mode to obtain IPv4 when professional, and the CS type of initiating modification SF is modification process and the SF of IPv6 business and the process of setting up of DP of IPv6, and the CGN address that receives according to described second receiver module obtains solicited message, issues described CGN address information to described terminal.

40. communication equipment according to claim 34, it is characterized in that, described second receiver module also is used to receive the CGN address information that described CSN issues, CS type information and the IPv6 address of SF, and receives CGN address that described terminal sends and obtain the IPv4 business datum that solicited message and SF by the GPCS type send;

Described second sending module also is used for after described second receiver module receives the CS type information and IPv6 address of DS-lite support policy, CGN address information, SF of described network side, the SF and the DP of GPCS type set up in triggering, and according to the recognition result of the 6th identification module, in the DS-lite of described terminal mode of operation is that described terminal adopts the DS-lite client mode to obtain IPv4 when professional, issues described CGN address information to described terminal;

Described communication equipment also comprises:

The 6th identification module is used for receiving the CGN address according to described second receiver module and obtains solicited message or IPv4 business datum, discerns the DS-lite mode of operation of described terminal;

Active module, be used for recognition result according to described the 6th identification module, when the DS-lite of described terminal mode of operation adopts the DS-lite proxy mode to provide IPv4 professional for described terminal for authorizing ASN, activate described DS-lite proxy mode, and indicate described second sending module to issue well-known IPv4 address to described terminal.

41. communication equipment according to claim 34, it is characterized in that, it is that the SF of IPv6 or IPv4 sets up request that described second receiver module also is used to receive transmission CS type that described terminal sends, and receives the SF information that described CSN sets up in service authorization success back;

Described second sending module also is used for the NAI and the corresponding session of well-known IPv4 allocation index according to described terminal, and initiates the service authorization request message to described CSN, and receives the service authorization prompt for successful message that described PCRF returns;

Described communication equipment also comprises:

The 7th identification module, be used for discerning the DS-lite mode of operation of described terminal according to the DS-lite support policy of described service authorization prompt for successful message, the CS type of authorizing successful SF and described network side, if the CS type of SF is IPv4, and do not carry the IPv4 address in this service authorization prompt for successful message, and the DS-lite support policy of described network side determines then that for can use DS-lite and can enable the DS-lite agent functionality described terminal use DS-lite proxy mode obtains the IPv4 business; If the CS type of SF is IPv6, and the IPv4 address of described terminal is well-known IPv4 address, determines that then described terminal uses the DS-lite client mode to obtain the IPv4 business;

Active module, be used for recognition result according to described the 7th identification module, when the DS-lite of described terminal mode of operation adopts the DS-lite proxy mode to provide IPv4 professional for described terminal for authorizing ASN, activate described DS-lite proxy mode, and indicate described second sending module to issue well-known IPv4 address to described terminal, set up the SF of IPv4 business;

Described second sending module also is used for the recognition result according to described the 7th identification module, in the DS-lite of described terminal mode of operation is IPv4 address that described terminal adopts the DS-lite client mode to obtain the professional described terminal of IPv4 when being well-known IPv4 address, issues described CGN address information to described terminal.

42. a communication equipment is characterized in that, comprising:

43. according to the described communication equipment of claim 42, it is characterized in that, also comprise:

Described the 3rd sending module also is used for sending to described ASN the DS-lite ability information of terminal.

44., it is characterized in that described communication equipment also comprises according to the described communication equipment of claim 42:

Described the 3rd sending module when described terminal has the DS-lite ability, sends CGN address request information to described ASN according to the testing result of described detection module;

When the described first communication service processing module receives described CGN address information at described the 3rd receiver module, the CS type of described IPv4SF is revised as IPv6, and sets up the SF and the DP of IPv6 business with described ASN.

45. according to the described communication equipment of claim 42, it is characterized in that, the described first communication service processing module is when described terminal exists the CS type to be the SF of IPv4, set up the SF and the DP of IPv4 business with described ASN, and after the 3rd receiver module receives the CGN address information that described ASN issues, with described ASN the CS type of SF is revised as IPv6, and sets up SF and the DP of IPv6;

Described communication equipment also comprises:

It is that described terminal activates the well-known IPv4 address that issues behind the DS-lite agency that described the 3rd receiver module also is used to receive described ASN.

46., it is characterized in that described first communication service processing module and described ASN set up the SF of IPv4 business and DP or with described ASN the CS type of the SF of IPv4 be revised as IPv6 and set up SF and the DP of IPv6 according to the described communication equipment of claim 43;

Described the 3rd sending module also is used for sending to described ASN the DS-lite ability information of described terminal, and after the described first communication service processing module and described ASN set up the SF and DP of IPv6 business, sends the CGN address request information to described ASN;

Described the 3rd receiver module receives the well-known IPv4 address that described ASN issues after the described first communication service processing module and described ASN set up the SF and DP of IPv4 business.

47. a communication equipment is characterized in that, comprising:

The 3rd receiver module, be used for after setting up the SF of IPv6 business between described first communication service processing module and the ASN, receive the CGN address information that described ASN issues, after setting up the SF of IPv4 business between described first communication service processing module and the ASN, receive the well-known IPv4 address that described ASN issues.

48. a communication equipment is characterized in that, comprising:

The 3rd sending module, be used for behind the SF and DP that set up the GPCS type between second communication Service Processing Module and the ASN, testing result according to described detection module, when described terminal has the IPv4 business demand and has the DS-lite ability, send the CGN address request information to described ASN, when described terminal had the IPv4 business demand but do not have the DS-lite ability, the SF by the GPCS type sent the IPv4 business datum to described ASN;

49. communication system, comprise terminal and ASN, it is characterized in that, comprise that also light-weight dual-stack handles device through consultation, be used to obtain the DS-lite ability information of described ASN and described terminal, and, determine the DS-lite mode of operation of described terminal according to the DS-lite ability information of described ASN and described terminal.

50. according to the described communication system of claim 49, it is characterized in that, also comprise CSN;

Described light-weight dual-stack is handled the DS-lite ability information that device also is used to obtain described CSN through consultation, specifically according to the DS-lite ability information of described ASN and described CSN, determine the DS-lite support policy of network side, and, determine the DS-lite mode of operation of described terminal according to the DS-lite support policy of described network side and the DS-lite ability information of described terminal.