CN101483635A - Method and apparatus for IP address selection - Google Patents
Method and apparatus for IP address selection Download PDFInfo
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- CN101483635A CN101483635A CNA2008100004346A CN200810000434A CN101483635A CN 101483635 A CN101483635 A CN 101483635A CN A2008100004346 A CNA2008100004346 A CN A2008100004346A CN 200810000434 A CN200810000434 A CN 200810000434A CN 101483635 A CN101483635 A CN 101483635A
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Abstract
The invention relates to an IP address selection method in the communication technology field. In a bearing establishing process, user equipment (UE) receives information of IP address version selecting capability sent by network equipment; the UE selects IP addresses according to the information of IP address version selecting capability. The invention also provides IP address selecting equipment. According to the invention, by informing the information of IP address version selecting capability to UE, the UE is helped to select IP addresses with suitable versions, therefore, source waste generated in IP address selection in the prior art can be reduced, time delay of service interaction is reduced and a valuable scheme is provided for the coexistence of IPv4 and IPv6.
Description
Technical field
The present invention relates to communication technical field, relate in particular to a kind of IP address choice method and device.
Background technology
TCP (Transmission Control Protocol, transmission control protocol)/IP (InternetProtocol, Internet protocol) protocol suite generally is divided into four levels, is followed successively by from top to bottom: application layer, transport layer, network layer and link layer.Application layer is responsible for handling specific application particulars, common protocol stack such as FTP (File Transport Protocol, file transfer protocol (FTP)), e-mail etc.; Transport layer is used to two application programs on the main frame that communication end to end, common protocol stack such as TCP, UDP (User Datagram Protocol, User Datagram Protoco (UDP)) etc. are provided; Network layer is responsible for handling grouped data and is wrapped in activity in the network, for example routing of packet etc., common protocol stack such as IP, ICMP (Internet Control Message Protocol, internet control message protocol) etc.; And link layer generally includes device driver in the operating system and corresponding network interface unit etc., common protocol stack such as the ARP in the Ethernet (Address Resolution Protocol, address resolution protocol) etc.
Behind a host-initiated in the network, in order to finish Business Processing, at first need to obtain an IP address and will oneself be registered in the network, find the main frame at professional place to finish follow-up business then and handle.A kind of typical processing method comprises:
1, host computer using link layer obtains the link address (as the MAC in the Ethernet (Medium Access Control, medium access control) address) of local terminal, keep and network in the link of peripheral main frame can reach;
2, host computer using DHCP (Dynamic Host Configuration Protocol, DHCP) the mechanism Dynamic Host Configuration Protocol server in network obtains the IP address of this machine and related parameter is arranged, as the domain name of service server etc.;
3, main frame carries out DNS (DomainName Services, domain name service) parsing to the service server domain name of Dynamic Host Configuration Protocol server feedback, to the IP address of dns server requested service server;
4, Signalling exchange is carried out in the IP address (step 3 acquisition) of the IP address of this machine of host computer using (step 2 acquisition) and service server, finishes follow-up business and handles.
Packet data handler system in the mobile communications network and above-mentioned TCP/IP model class are seemingly, with 3GPP (The 3rd Generation Partnership Project, third generation partner plan) EPS (the Evolved Packet System that studying of tissue, the grouping system of evolution) network is an example, as shown in Figure 1, eNodeB is the base station of wireless access network, MME (Mobility Management Entity, mobile management entity) is (the User Equipment of UE in the core net, subscriber equipment) chain of command entity, the authentication of responsible UE and mobile management etc., S-GW (Serving Gateway, gateway) and P-GW (Packet Data Network Gateway, packet data gateway) be the gateway device of core net, be connected to outside packet network (as PDN (Packet Data Network, packet data network)), for UE provides the route of packet data package and transmits processing, both can unify, and hereinafter unification is described with gateway.
UE is connected to MME, S-GW and the P-GW of core net by the eNodeB of wireless access network.After the UE start, can at first adhere to processing, finish authentication and the registration of UE in mobile communications network MME; When UE need carry out business, need be established to the user plane bearer of core net gateway earlier, this carrying is similar to the link layer link in the above-mentioned TCP/IP model, for the IP stack on upper strata provides service.In loading establishing process, the core net gateway can distribute available IP address for this UE, also can be after carrying foundation be finished, UE utilizes the mobile communications network carrying (link layer) of having set up to require the distributing IP address to Dynamic Host Configuration Protocol server by modes such as DHCP.This processing is similar to the step 2 in the TCP/IP model.
After UE has obtained the IP address, can adopt the step 3 and the similar mode of step 4 of above-mentioned TCP/IP model to obtain the IP address of service server, and finish follow-up business, for example carry out IMS (IPMultimedia Subsystem, IP Multimedia System) registration, or visit Internet etc.
Other mobile communications network, as GPRS (General Packet Radio Service, GPRS)/UMTS (Universal Mobile Telecommunications System, universal mobile telecommunications system) packet domain, CDMA (Code Division Multiple Access, code division multiple access inserts), WiMax (Worldwide Interoperability for Microwave Access, worldwide interoperability for microwave inserts), WLAN (Wireless Local Area Network, WLAN (wireless local area network)) processing of etc. processing and above-mentioned EPS is similar, UE can set up link layer with the gateway device in the network of relation and be connected, and the IP layer service on being connected to by this link layer.
The IP address can be divided into two kinds of IPv4 and IPv6, and there are very big difference in the form of these two kinds of IP addresses and relevant treatment.Network based on the IPv4 address is the IPv4 network, is the IPv6 network based on the network of IPv6 address.Particularly there is the processing under the situation of IPv4 isolated island or isolated IPv6 site in processing mode when needing to consider the coexistence of IPv4 and IPv6 address to the process of IPv6 network transition from the IPv4 network.As shown in Figure 2, when IPv6 develops into certain phase, then backbone upgrade is IPv6, but some local area network (LAN) that links to each other with backbone network may still use IPv4, and these IPv4 networks are exactly the IPv4 isolated island.
Under the network coexisted situation of IPv4 and IPv6, a kind of processing method that addresses the above problem is that associated host has IPv4 and the two stacks of IPv6, energy is process IP v4 address and IPv6 address simultaneously, if the Correspondent Node server uses IPv4 or IPv6, then local terminal also uses the IP address of corresponding version to finish alternately.This method can be referred to as " two stack " (Dual Stack)
In the EPS network for solve IPv4 and IPv6 the coexistence problem, adopted the processing method of two stacks, UE is in setting up the process of user plane bearer, gateway can be according to ability and the carrier policy of UE, be that this UE distributes the address of two IP versions, UE can utilize these two IP addresses to communicate with application server in the PDN network that is connected.
Yet therefore the IP address ability of the application server in the PDN network that UE can't the sensing mobile communication network connects in the prior art can't select the IP address of appropriate version and the opposite end communicates; If the opposite end server is also supported two stacks, UE also can't judge and used the IP address of which kind of version can optimize performance this moment.
Prior art one is in order to solve problem how to select the IP address version under two stack situations, and a kind of possible method is that UE or main frame are selected at random, or attempts one by one, and which is available just uses which.
In realizing process of the present invention, the inventor finds that there is following shortcoming at least in prior art one:
1, because related specifications requires to support the network of IPv6 will support the IPv4 address simultaneously, if therefore attempt the IPv4 address earlier, then this IPv4 address is always available, thereby causes the IPv6 address to can not get using;
If 3 attempt the IPv6 address earlier, then for the network of only supporting the IPv4 address in the existing network in a large number, always there is the situation of twice selection, cause the wasting of resources.
Therefore, select the trial scheme at random of IP address version to have the problem of the wasting of resources in the prior art under two stack situations.
Summary of the invention
The embodiment of the invention provides a kind of IP address choice method and device, has solved the wasting of resources problem of selecting the IP address version to exist under the two stack situations of prior art.
The embodiment of the invention is achieved through the following technical solutions:
The embodiment of the invention provides a kind of IP address choice method, comprising:
In the loading establishing process, user equipment (UE) receives the preferred IP address version ability information that network equipment sends;
UE selects the IP address according to described preferred IP address version ability information.
The embodiment of the invention provides a kind of preferred IP address version ability information notifying device, comprising:
Preferred IP address version ability information acquiring unit is used to obtain preferred IP address version ability information; Described preferred IP address version ability information comprises the preferred IP address version ability information of the packet data network PDN that carrying is served, the preferred IP address version ability information of typical services, any one in the preferred IP address version ability information of typical services network or multiple;
Preferred IP address version ability information issues the unit, is used to issue the described preferred IP address version ability information of obtaining.
The embodiment of the invention provides a kind of subscriber equipment, comprising:
Preferred IP address version ability information receiving element is used to receive preferred IP address version ability information; Described preferred IP address version ability information comprises the preferred IP address version ability information of the packet data network PDN that carrying is served, the preferred IP address version ability information of typical services, any one in the preferred IP address version ability information of typical services network or multiple;
Preferred IP address version selected cell is used for selecting the IP address according to described preferred IP address version ability information.
The technical scheme that is provided by the invention described above embodiment as can be seen, the embodiment of the invention is by being notified to UE with preferred IP address version ability information, thereby help the IP address of the follow-up selection appropriate version of UE, thereby reduced the wasting of resources problem that UE selects the IP address to cause in the prior art, and reduced the time delay of service interaction, for IPv4 and IPv6 coexistence provide a kind of valuable scheme.
Description of drawings
Fig. 1 is the packet network architecture schematic diagram of prior art evolution;
Fig. 2 is a prior art IPv4 isolated island schematic diagram;
Fig. 3 is the embodiment of the invention one a preferred IP address version ability information notice flow chart;
Fig. 4 is the embodiment of the invention two preferred IP address version ability information notice flow charts;
Fig. 5 is the embodiment of the invention three preferred IP address version ability information notice flow charts;
Fig. 6 is the embodiment of the invention four preferred IP address version ability information notice flow charts;
Fig. 7 is the embodiment of the invention five described system schematic.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that is obtained under the creative work prerequisite.
The embodiment of the invention is set up between UE and mobile communications network gateway in the process of carrying, network equipment can be notified to UE with preferred IP address version ability information, therefore, when carrying out service needed, obtains in the process of server ip address UE, can utilize this preferred IP address version ability information to select the IP address version of a realistic network condition and carrier policy, thereby solve the IP address choice problem under IPv4 and the network coexisted situation of IPv6.
Described preferred IP address version ability information comprise following any one or multiple: the preferred IP address version ability information of the PDN network that this carrying is served (preferred IPv4 address or preferred IPv6 address etc.), typical professional preferred IP address version ability information, the preferred IP address version ability information of business network.Described typical business and business network comprise: as DHCP, DNS, email, IMS network, VPN (Virtual Private Network, Virtual Private Network) network etc.
Describedly can be the core-network side gateway with what preferred IP address version ability information was notified to UE, also can be HA (Home Agent, home agent) etc., gateway and HA also can unify, below embodiments of the invention be that example describes to finish described process by the core-network side gateway.
Gateway unification for communication network among the following embodiment is described with " gateway ", includes but not limited to following concrete gateway: the GGSN among the GPRS/UMTS (Gateway GPRSSupport Node, gateway GPRS service node); S-GW/P-GW among the EPS; PDSN among the CDMA (Packet Data Serving Node, packet data serving node); ASN-GW among the WiMax (Access Serving Network Gateway, Access Service Network Gateway); PDG among the WLAN (Packet Data Gateway, packet data gateway) etc.
Following examples mainly are described with the gateway in the EPS network, and the gateway processes in other networks similarly repeats no more herein.
The method that the described gateway of the embodiment of the invention obtains preferred IP address version ability information comprises: the preferred IP address version ability information of continuous PDN network, typical services and/or business network of manual configuration in gateway; Gateway passes through the continuous PDN network of the mutual perception of IP layer or the preferred IP address version of business network; Gateway can also initiatively obtain the preferred IP address version ability information of link to each other PDN network, typical services and/or business network to other network elements (as PCRF, Policy Charging Rule Function, policy charging rule function); Other network elements also can initiatively initiatively send to gateway with the business of belonging network, service and/or the preferred IP address version ability information of business network.
Embodiment one, and in the EPS network, UE can set up a plurality of carryings as required in order to visit PDN, is that identical IP address is used in a plurality of carryings of a PDN service.General in being established to first carrying of this PDN (can be referred to as default bearer) process, gateway is this UE distributing IP address, can be two IP addresses of IPv4 and two kinds of versions of IPv6; Also allow in the prior art after carrying is set up, UE obtains the IP address by other modes.Present embodiment does not limit both of these case, is that scene illustrates with the preferred IP address version ability information that sends PDN network preferred IP address version ability information and typical business and/or business network in setting up this default bearer process mainly.Gateway is set up in the process default bearer, and with the preferred IP address version ability information of service PDN network, and the preferred IP address version ability information of typical services and/or business network is notified to UE.UE writes down these preferred IP address version ability information, selects the IP address of the UE and the service server of corresponding version when carrying out related service according to these preferred address version ability information.As shown in Figure 3, can comprise following operating procedure:
Step 1:UE sends network connecting request to MME, requires to be established to the default bearer of PDN network.
Under some scene, MME can replace UE to be established to the default bearer of PDN network, and a kind of typical situation is that the UE start is attached in the EPS network development process, after MME finishes the authentication and registration of UE, can be established to the default bearer of default PDN network for this UE.Under these scenes, UE does not need execution in step 1, and follow-up processing and present embodiment are similar, so step 1 is optional.
Step 2:MME sends to gateway and sets up the default bearer request message.MME can be in receiving step 1 after the request of UE or trigger this step in attaching process.
Step 3: gateway sends to MME and sets up the default bearer response message.
In this message except comprising that gateway is IPv4, the IPv6 address that UE distributes, can also comprise preferred IP address version ability information, the preferred IP address version ability information (IPv4 or IPv6) that for example comprises the PDN network that this carrying is served, and in the preferred IP address version ability information of typical services and business network any one or multiple, preferred IP address version of the preferred IP address version of DNS, IMS network (P-CSCF) etc. for example.
Described typical business and business network comprise: DHCP, DNS, email, IMS network, VPN network etc.
Described preferred IP address version ability information can be included in PCO (Protocol ConfigurationOption, the protocol configuration option) cell and transmit, and also can transmit by newly-increased cell.
Gateway is before sending response message to MME, if disposed PCC (Policy ControlCharging, policy control is chargeed), then obtain the required PCC rule of default bearer alternately with PCRF (Policy Charging RulesFunction, "Policy and Charging Rules Function) earlier.
Step 4:MME sends carrying to UE and sets up request message, except comprising the IP address of the UE that gateway provides, can also carry the preferred IP address version ability information that gateway provides in this message.
In attaching process, what MME sent to UE in this step is to adhere to accept message, also can carry the preferred IP address version ability information that gateway provides in this message.
The preferred IP address version ability information that step 5:UE record gateway provides can also offer these information UE and go up the application program of installing.
Step 6:UE sends carrying to MME and sets up response message.
In attaching process, what MME sent to UE in this step is to adhere to finish message.
Carry out the bearer update flow process between step 7:MME and the gateway.
Because the message in the step 6 need be transmitted through the eNodeB of wireless access network, eNodeB can be this default bearer allocation of downlink tunnel routing information in this process, and this information sent to MME, so MME sends to gateway with this downlink tunnel routing iinformation in this step, finishes renewal.This flow process is a prior art, repeats no more herein.
Above-mentioned steps 1-7 has finished the process of setting up of the default bearer of UE and PDN, follow-up, when UE need carry out business, generally need to carry out the IP address that dns resolution obtains service server according to the domain name of business earlier, therefore UE need send the DNS request message that comprise professional domain name to dns server, and dns server is contained in the IP address packet of corresponding service server in the DNS response message and passes to UE.In this processing, comprise two processes:
(1) UE selects the IP address of the UE and the dns server of corresponding version according to the preferred IP address version ability information of DNS of record, assembling DNS request message, and send to the dns server that the IP address of described dns server is identified.
The IP address of dns server can be provided by gateway in loading establishing process or UE obtains by extra DHCP flow process, if dns server is not two stacks, then UE directly uses the source address of the IP address version consistent with dns server IP address version as the DNS request message; Otherwise the preferred IP address version ability information of the dns server that needs employing gateway provides is selected an IP address.
(2) after dns server is received the request message of UE, carry out dns resolution, send DNS response message, the IP address of carrying the domain name corresponding service server (as email) that carries in the request message in this message to UE.If this domain name exists the IP address of two different editions, then the IP address that can carry these two versions in this DNS response message.UE is after receiving the DNS response message, and UE can select the IP address of UE and service server according to the preferred IP address version ability information of the business (email) that gateway provides, and UE and service server are follow-up can to utilize selected IP address to communicate.
If comprise the IP address of two different editions of service server in the DNS response message, but gateway does not provide the preferred IP address version ability information of this business to UE, then UE can select the IP address of UE and service server according to the preferred IP address version of the PDN that gateway provides ability information (can be regarded as " default preferred IP version ").
Therefore, when UE carries out business, can carry out as the following steps among Fig. 3:
Step 8:UE is according to the preferred IP address version ability information of described record, local terminal and peer IP address version when definite and DNS is mutual, if record the preferred IP version of DNS, then select the IP address of UE and dns server, and assemble the DNS request message according to the DNS request message format of this version.
Step 9:UE sends the DNS request message to described dns server.Also comprise the domain name that to carry out follow-up business in this message.
Step 10:DNS server carries out dns resolution, sends the DNS response message to UE, can comprise the IPv4 and/or the IPv6 address of domain name corresponding service server in this message.
Step 11:UE is according to described record, and the preferred IP address version ability information of searching the domain name corresponding service is selected the IP address of this service server, and it is mutual to select the IP address of the UE of identical version to carry out follow-up business.
If have only the IP address of a version in the DNS response message, then to select the IP address of the UE of the identical version of the version that carries in this response message to carry out follow-up business as source address mutual for UE.
If UE does not have corresponding professional preferred IP address version ability information, but record the preferred IP address version ability information of this business business network of living in, then select the IP address corresponding with this preferred IP version information according to the preferred IP address version ability information of described business network.
If UE does not have the preferred IP address version ability information of domain name corresponding service, do not write down the preferred IP address version ability information of this business business network of living in yet, but write down should the residing PDN of business preferred IP address version ability information, then select the IP address of UE and service server according to the preferred IP address version ability information of PDN.
The embodiment of the invention one is notified to UE by setting up at default bearer in the process with preferred IP address version ability information, make the UE can be according to this Information Selection IP address version, reduced the wasting of resources that UE selects the IP address to cause, and reduced the time delay of service interaction, for IPv4 and IPv6 coexistence provide a kind of valuable scheme.
Embodiment two, are that with the difference of embodiment one UE and gateway are set up the flow process of default bearer and initiated by UE, and gateway directly response is finished, and as shown in Figure 4, comprises the steps:
Step 1, UE send the bearing activation request message to gateway.
Step 2, gateway send the bearing activation response message to UE.In this message except comprising that gateway is IPv4 and/or the IPv6 address that UE distributes, can also comprise preferred IP address version ability information, in for example preferred IP address version ability information (IPv4 or IPv6) of the PDN that serves of this carrying, and the preferred IP address version ability information of typical services and business network (for example preferred IP version of the preferred IP address version of DNS, IMS network (P-CSCF)) etc. any one or multiple.
Preferred IP address version ability information can be included in the PCO information element transmission, also can transmit by newly-increased cell.
The preferred IP address version ability information that step 3, UE record gateway provide can also offer these information UE and go up the application program of installing.
The handling process of subsequent step 4-7 is identical with step 8-11 among the embodiment one, repeats no more.
The embodiment of the invention two is notified to UE by setting up at default bearer in the process with preferred IP address version ability information, make the UE can be according to this Information Selection IP address version, reduced the wasting of resources that UE selects the IP address to cause, and reduced the time delay of service interaction, for IPv4 and IPv6 coexistence provide a kind of valuable scheme.
After default bearer is set up, when UE need carry out specific transactions, can require network to distribute corresponding bearing resource for this UE, if the bearing resource that has distributed can not satisfy this business need, then the gateway of core net can be set up a dedicated bearing for this business; Gateway also can be initiated the dedicated bearing modification process, increases relevant filtering rule in the existing carrying that meets the demands, and makes this carrying can transmit this professional packet.
Embodiment three, in the time of need carrying out specific transactions for UE, carry the method for preferred IP address version ability information in the foundation/modification dedicated bearer process between gateway and UE, as shown in Figure 5, comprise the steps:
When step 1:UE need carry out specific transactions, send resource allocation request message to network.
Step 2: gateway obtains this professional PCC rule to PCRF, if pre-configured PCC rule that should business on this gateway, then this step does not need to carry out.
Step 3: whether the existing carrying of gateway inspection can satisfy this professional transmission requirement, if do not satisfy, then sends dedicated bearing to UE and sets up message, a newly-built carrying; If satisfy, then send dedicated bearing and revise message, for this carrying increases the relevant filtering rule of this specific transactions to UE.The preferred IP address version ability information that in this dedicated bearing foundation/modification message, comprises this business.
Gateway can also provide the preferred IP address version ability information of other business or network to UE in this step.
The preferred IP version of this business that step 4:UE record gateway provides can also offer these information UE and go up the application program of installing.
Step 5:UE sends dedicated bearing foundation/modification response message to gateway.
After having set up bearing resource between UE and the gateway, UE can be mutual with service server, and follow-up handling process is described with embodiment one step 8-11, repeats no more herein.
Present embodiment four, identical with the application scenarios of embodiment three, its resource request flow process comprises the steps: as shown in Figure 6
Step 1:UE sends the secondary activating request message to gateway, and requiring network is the traffic assignments bearing resource.Can comprise professional indication in this message.
Step 2: gateway sends the secondary activating response message to UE, can comprise the preferred IP address version ability information of this business that gateway provides in this message.
Step 3:UE writes down the preferred IP address version ability information of this business.
After having set up bearing resource between UE and the gateway, UE is for can be mutual with application server, and follow-up processing flow is described with embodiment one step 8-11, repeats no more herein.
As a kind of expansion, gateway can also provide the preferred IP address version ability information of other business or network to UE in the present embodiment step 3.
Embodiment five, present embodiment provides a kind of communication system, this system schematic as shown in Figure 7, comprise UE and core-network side gateway, described gateway is used to obtain preferred IP address version ability information, comprise in the information such as preferred IP address version ability of the preferred IP address version ability of PDN network and typical services and business network any one or multiple, and be notified to UE, described UE can write down this information, according to this Information Selection IP address, the local terminal of corresponding version and the IP address of opposite end when for example selection is mutual with service server.For finishing above-mentioned functions, described gateway is provided with:
Preferred IP address version ability information acquiring unit is used to obtain the preferred IP address version ability information of PDN network; The described method of obtaining preferred IP address version ability information comprises: manual configuration in the gateway, for example preferred IP address version ability information of continuous PDN network, typical services and/or business network of configuration; Gateway is by the mutual perception of IP layer, for example the preferred IP address version ability information and/or the preferred IP address version of the business network ability information of the PDN network that links to each other of perception; Gateway can also obtain from other network elements (as PCRF, Policy Charging Rule Function, policy charging rule function), for example can initiatively obtain the preferred IP address version of link to each other PDN network, typical services and/or business network; Other network elements also can initiatively initiatively send to gateway with the business of belonging network, service and/or the preferred IP address version of business network.
Preferred IP address version ability information issues the unit, is used for the described preferred IP address version ability information of obtaining is being handed down to UE; Be that UE sets up load bearing process the described opportunity that issues, and comprising: when UE and gateway are set up default bearer or between UE and the gateway during foundation/modification dedicated bearing.Described preferred IP address version ability information can be carried in original PCO message and issue, and also can issue by newly-increased cell.Described typical services comprises: DHCP, DNS, email etc., typical business network comprises: IMS network, VPN network etc.
Described UE is provided with:
Preferred IP address version ability information receiving element is used to receive preferred IP address version ability information;
Preferred IP address version ability information record cell is used to write down the preferred IP address version ability information of described reception;
Preferred IP address version selected cell is used for selecting the IP address according to the preferred IP address version ability information of described record;
Information reports the unit, is used to UE to go up the preferred IP address version ability information that the application program of installing provides described reception.
The function of obtaining and issue preferred IP address version ability information of the described gateway of present embodiment also can be realized by HA.Described HA can be arranged with the gateway branch, also may with the integrated setting of gateway.
Present embodiment is notified to UE with preferred IP address version ability information, makes the IP address version that UE can be correct according to this Information Selection, has saved resource like this, has reduced the time delay of service interaction, for IPv4 and IPv6 coexistence provide a kind of valuable scheme.
In sum, the embodiment of the invention is by when UE sets up carrying, preferred IP address version ability information is notified to UE, help UE to select the IP address of appropriate version, thereby reduced the wasting of resources problem that UE selects the IP address to cause in the prior art, and reduced the time delay of service interaction, for IPv4 and IPv6 coexistence provide a kind of valuable scheme.
The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.
Claims (14)
1, a kind of IP address choice method is characterized in that, comprising:
In the loading establishing process, user equipment (UE) receives the preferred IP address version ability information that network equipment sends;
UE selects the IP address according to described preferred IP address version ability information.
2, the method for claim 1 is characterized in that, described UE receives described preferred IP address version ability information from core-network side gateway or home agent.
3, method as claimed in claim 1 or 2, it is characterized in that, described preferred IP address version ability information comprises following any one or multiple: the preferred IP address version ability information of the packet data network PDN that carrying is served, the preferred IP address version ability information of typical services, the preferred IP address version ability information of typical services network.
4, method as claimed in claim 3 is characterized in that, described UE selects the step of IP address to be according to described preferred IP address version ability information:
UE selects the local terminal and the peer IP address of corresponding version when mutual with service server according to described preferred IP address version ability information.
5, method as claimed in claim 4 is characterized in that, described UE selects the local terminal of corresponding version when mutual with service server and the method for peer IP address to comprise according to described preferred IP address version ability information:
If comprise the preferred IP address version ability information of current business in the preferred IP address version ability information that UE receives, then select the IP address corresponding with this preferred IP version information;
If there is not the preferred IP address version ability information of current business in the preferred IP address version ability information that UE receives, but the preferred IP address version ability information that this business business network of living in is arranged is then selected the IP address corresponding with this preferred IP version information according to the preferred IP address version ability information of described business network;
If there is not the preferred IP address version ability information of current business in the preferred IP address version ability information that UE receives, also preferred IP address version ability information that should business business network of living in, but the preferred IP address version ability information that the residing PDN of this business is arranged is then selected the IP address corresponding with this preferred IP version information according to the preferred IP address version ability information of described PDN.
6, method as claimed in claim 1 or 2 is characterized in that, described loading establishing process is:
For UE and mobile communications network gateway are set up the process of first carrying; Or
UE carries out the process of specific transactions foundation/modification dedicated bearing.
7, method as claimed in claim 1 or 2 is characterized in that, before the preferred IP address version ability information that receives the network equipment transmission, described method comprises that also network equipment obtains the step of preferred IP address version ability information, and acquisition methods comprises:
The described preferred IP address version ability information of manual configuration in gateway or home agent; Or
Gateway or home agent are by the preferred IP address version of the mutual perception of IP layer ability information; Or
Gateway or home agent and other network elements obtain preferred IP address version ability information alternately.
8, method as claimed in claim 1 or 2 is characterized in that, after described UE received the preferred IP address version ability information of network equipment transmission, described method also comprised:
UE offers UE with described preferred IP address version ability information and goes up the application program of installing.
9, method as claimed in claim 1 or 2 is characterized in that, the method that described UE receives the preferred IP address version ability information of network equipment transmission comprises:
The carrying that UE sends from network equipment is set up and is received described preferred IP address version ability information the request; Or
UE receives described preferred IP address version ability information from the activation response that network equipment sends; Or
UE receives described preferred IP address version ability information from the dedicated bearing foundation/modification request that network equipment sends.
10, a kind of preferred IP address version ability information notifying device is characterized in that, comprising:
Preferred IP address version ability information acquiring unit is used to obtain preferred IP address version ability information; Described preferred IP address version ability information comprises the preferred IP address version ability information of the packet data network PDN that carrying is served, the preferred IP address version ability information of typical services, any one in the preferred IP address version ability information of typical services network or multiple;
Preferred IP address version ability information issues the unit, is used to issue the described preferred IP address version ability information of obtaining.
11, device as claimed in claim 10 is characterized in that, described device is arranged on the core-network side gateway or on the home agent.
12, a kind of subscriber equipment is characterized in that, comprising:
Preferred IP address version ability information receiving element is used to receive preferred IP address version ability information; Described preferred IP address version ability information comprises the preferred IP address version ability information of the packet data network PDN that carrying is served, the preferred IP address version ability information of typical services, any one in the preferred IP address version ability information of typical services network or multiple;
Preferred IP address version selected cell is used for selecting the IP address according to described preferred IP address version ability information.
13, subscriber equipment as claimed in claim 12 is characterized in that, also comprises:
Preferred IP address version ability information record cell is used to write down the preferred IP address version ability information of described reception.
14, as claim 12 or 13 described subscriber equipmenies, it is characterized in that, also comprise:
Information reports the unit, is used to UE to go up the preferred IP address version ability information that the application program of installing provides described reception.
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| CN2008100004346A CN101483635B (en) | 2008-01-10 | 2008-01-10 | Method and apparatus for IP address selection |
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| CN2008100004346A CN101483635B (en) | 2008-01-10 | 2008-01-10 | Method and apparatus for IP address selection |
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| CN101483635A true CN101483635A (en) | 2009-07-15 |
| CN101483635B CN101483635B (en) | 2012-06-27 |
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| CN2008100004346A Active CN101483635B (en) | 2008-01-10 | 2008-01-10 | Method and apparatus for IP address selection |
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