CN102469176B - Method and equipment for distributing IP (Internet protocol) addresses - Google Patents

Abstract

The present invention discloses a method and equipment for assigning an IP address. The method includes: the network side receives an address application request sent by a user terminal, and the address application request carries the bearer type requested by the user terminal as IPv4v6; when the When the network side determines that the user terminal is a single-mode terminal according to the address application request, the network side sets the bearer type of the user terminal to IPv4v6, and assigns IPv4 and IPv6 addresses to the user terminal. In the present invention, when the UE is a single-mode terminal, the network side sets the bearer type of the UE to IPv4v6, and allocates IPv4 and IPv6 addresses for the UE, thereby making full use of the IPv4v6 bearer type to allocate IPv4 and IPv6 addresses and reducing core network costs.

Description

Method and device for assigning IP address

technical field

The present invention relates to the communication field, in particular to a method and equipment for assigning an IP address.

Background technique

Current Internet protocols include IPv4 and IPv6. IPv4 uses 32-bit IP addresses, which has a limited address space; IPv6 uses 128-bit addresses, which can completely solve the problem of insufficient IPv4 addresses. However, how to smoothly transition from an IPv4 network to an IPv6 network is the key to the success of IPv6. In order to ensure the continuity of service access during the transition period, that is, the continuity of service access when terminals switch between IPv4 and IPv6 networks, 3GPP regards dual-stack (allocating IPv4 and IPv6 addresses to terminals at the same time) as the basic technology for IPv6 transition.

In order to meet this requirement, the dual-stack technology requires all nodes from the terminal to the network side to support IPv4v6. The current LTE network can support IPv4v6, but there are nodes such as SGSN that do not support IPv4v6 in the 2/3G network. Terminals in the prior art support LTE mode and/or 2/3G mode. In order to ensure service continuity, when a terminal requests an IPv4v6 PDN/PDP connection, the network side sets a unified policy. Only when all modes of all terminals in the network are Only when IPv4v6 is supported, can the terminal be allowed to establish an IPv4v6 PDN/PDP connection, and then obtain an IPv4v6 address.

Currently, PDN (Packet Data Network, Packet Data Network) can only be mapped to the same type of PDP (Packet Data Protocol, packet data protocol), that is, IPv4v6PDN is mapped to IPv4v6PDP, IPv4PDN is mapped to IPv4PDP, and IPv6PDN is mapped to IPv6PDP.

However, since the 2/3G mode of the terminal and the LTE (Long Term Evolution, Long Term Evolution) mode do not support IPv4v6 completely synchronously, in order to ensure the service continuity during interoperability between LTE and 2/3G networks, for multi-mode terminals, only IPv4v6PDN can only be used when all its modes support IPv4v6PDP.

Specifically, take the process of an LTE terminal applying for an IPv4v6 address as an example, as shown in Figure 1, including:

1. The UE sets the PDN type requested when attaching to IPv4v6PDN type according to its own IP protocol stack configuration.

2. After receiving the attachment request from UE, MME (Mobility Management Entity) compares the PDN type requested by UE with the PDN in the user subscription data record obtained from HSS (Home Subscriber Server, belonging user database) type, if the subscription data is IPv4v6PDN, the MME sends a "Create Session Request" message to the S-GW to create a default bearer. If the PDN type is set to IPv4v6, according to the operator's pre-configuration on the node, if all the SGSNs that the UE may switch to have been upgraded to support dual-stack PDP, the MME will perform DABF (Dual Address Bearer Flag, dual-stack address bearer flag) setting, such as setting DABF to 1.

3. The S-GW sends a Create Session Request to the PDN GW, and the PDN GW restricts the IPv4v6 PDN type according to the operator's policy after receiving the message from the S-GW.

If the operator's preferred policy only allows the APN to use IPv4 addresses or IPv6 prefixes, the PDN type should be changed to IPv4 PDN or IPv6 PDN, and the information will be returned to the terminal, and the terminal can only use the operator's preferred policy when requesting a new PDN connection The required PDN type; if the MME does not set DABF in the Create Session Request message received by the PDN GW, the PDN type should be set to IPv4 or IPv6, and the reason will be returned to the terminal, and the terminal can apply for another independent PDN type , Obtain IPv4 and IPv6 addresses by establishing two PDN connections, IPv4 and IPv6.

4. The PDN GW assigns an address to the terminal according to the set PDN type, and sends the "Create Session Response" message containing the IPv6 interface identifier or IPv4 address to the S-GW.

5. The S-GW forwards the Create Session Response message to the MME, and the MME sends an "Attach Accept" message to the UE, which contains the IPv6 interface identifier or IPv4 address.

6. The UE sends an RS (Router Solicitation, router request) message to the PDN GW.

7. After receiving the RS message, the PDN GW immediately responds to RA (Router Advertisement, Router Advertisement), or periodically sends an RA message to the UE. The RA message should contain the same IPv6 prefix provided during the default bearer establishment phase. After receiving the RA message, the UE constructs a complete IPv6 address through the method of stateless address auto-configuration.

In the above process, MME adopts a unified strategy for LTE single-mode terminals and multi-mode terminals. As a result, the use of IPv4v6PDN by LTE single-mode terminals is also affected by the interoperability between LTE and 2/3G, and the dual-stack bearer feature of LTE is not fully utilized. At the same time, for LTE multimode terminals, there are multimode terminals that support IPv4v6PDN in all modes, and there are also multimode terminals that do not support IPv4v6PDN in some modes. Under the existing solution, all LTE multimode terminals are not allowed to use IPv4v6PDN. Using two independent PDPs/PDNs for IPv4 and IPv6 to allocate IPv4 and IPv6 addresses respectively results in insufficient use of LTE features and increases the cost of the core network.

Contents of the invention

The embodiment of the present invention provides a method and equipment for assigning an IP address, so that the network side can flexibly set the IPv4v6 PDN/PDP of the UE, and make full use of the dual-stack feature of the UE.

The embodiment of the present invention provides a method for assigning an IP address, including:

The network side receives the address application request sent by the user terminal, and the address application request carries the bearer type requested by the user terminal as IPv4v6;

When the network side determines that the user terminal is a single-mode terminal according to the address application request, the network side sets the bearer type of the user terminal to IPv4v6, and assigns IPv4 and IPv6 addresses to the user terminal.

The embodiment of the present invention provides a method for assigning an IP address, including:

The network side receives the address application request sent by the user terminal, and the address application request carries the bearer type requested by the user terminal as IPv4v6;

The network side obtains the bearer types supported by all modes of the user terminal carried in the address application request; if all modes of the user terminal support IPv4v6 bearer types, the network side sets the bearer types of the user terminal to The bearer type is IPv4v6, and IPv4 and IPv6 addresses are allocated to the user terminal.

The embodiment of the present invention provides a method for assigning an IP address, including:

The user terminal obtains the bearer types supported by each network mode supported by itself;

The user terminal sends an address application request to the network side, and when all modes of the user terminal support the IPv4v6 bearer type, the bearer type carried in the address application request is IPv4v6.

An embodiment of the present invention provides a network side device, including:

The receiving unit is configured to receive an address application request sent by the user terminal, where the address application request carries the bearer type requested by the user terminal as IPv4v6;

a judging unit, configured to judge whether the user terminal is a single-mode terminal;

A setting unit, configured to set the bearer type of the user terminal to IPv4v6 when the user terminal is a single-mode terminal.

An embodiment of the present invention provides a network side device, including:

The receiving unit is configured to receive an address application request sent by the user terminal, where the address application request carries the bearer type requested by the user terminal as IPv4v6;

An obtaining unit, configured to obtain bearer types supported by all modes of the user terminal carried in the address application request;

A setting unit, configured to set the bearer type of the user terminal to IPv4v6 when all modes of the user terminal support the IPv4v6 bearer type.

An embodiment of the present invention provides a user terminal, including

The obtaining unit is used to obtain the bearer types supported by each network mode supported by itself;

A sending unit, configured to send an address application request to the network side. When all modes of the user terminal support the IPv4v6 bearer type, the bearer type carried in the address application request is IPv4v6.

An embodiment of the present invention provides a user terminal, including:

an acquiring unit, configured to acquire bearer types supported by each network mode supported by the user terminal;

The sending unit is configured to send an address application request to the network side, where the address application request carries bearer types supported by each network mode supported by the user terminal.

Compared with the prior art, the embodiments of the present invention have at least the following advantages:

In the embodiment of the present invention, when the UE is a single-mode terminal, the network side sets the bearer type of the UE to IPv4v6, and assigns IPv4 and IPv6 addresses to the UE, thereby making full use of the IPv4v6 bearer type to allocate IPv4 and IPv6 addresses and reducing core network costs.

Description of drawings

Fig. 1 is a schematic diagram of the process of applying for an IPv4v6 address by an LTE terminal in the prior art;

FIG. 2 is a schematic flowchart of a method for assigning an IP address according to Embodiment 1 of the present invention;

FIG. 3 is a schematic flowchart of a method for assigning an IP address according to Embodiment 2 of the present invention;

FIG. 4 is a schematic flowchart of a method for IP address allocation provided by Embodiment 3 of the present invention;

FIG. 5 and FIG. 6 are schematic structural diagrams of network side equipment provided by Embodiment 4 of the present invention;

FIG. 7 is a schematic structural diagram of a network-side device provided in Embodiment 5 of the present invention;

FIG. 8 is a schematic structural diagram of a user terminal provided in Embodiment 6 of the present invention;

FIG. 9 is a schematic structural diagram of a network-side device corresponding to a user terminal provided in Embodiment 6 of the present invention;

FIG. 10 is a schematic structural diagram of a user terminal provided by Embodiment 7 of the present invention.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the embodiments of the present invention.

Embodiment one

Embodiment 1 of the present invention provides a method for allocating IP addresses. When the UE requests to set the PDN/PDPtype (bearer type) to IPv4v6, the MME/SGSN judges according to the type of the UE. If the UE is a single-mode terminal and the user subscribes data If IPv4v6 is allowed, there will be no impact on the interoperability between the LTE network and the 2/3G network, and the MME/SGSN allows setting the UE's PDN/PDP type to IPv4v6.

Specifically, as shown in Figure 2, taking the UE as an LTE single-mode terminal as an example, the method includes the following steps:

In step 201, the UE sends an attach request to the MME, and the PDN type carried in the attach request is IPv4v6PDN.

Specifically, the attach request carries the information that the PDN type set by the UE is IPv4v6, APN (Access Point Name, access point name), and MS Radio Access Capability (radio access capability of the mobile station).

Step 202, the MME receives the attach request sent by the UE, and judges whether the PDN type is legal according to the subscription data of the UE. If it is legal, it further judges whether the UE is a single-mode terminal. If the judgment result is yes, execute step 203; otherwise, refer to FIG. 1 The process shown processes the attach request, and the network side sets the bearer type of the UE according to the subscription data of the UE and the operator's policy, and allocates a corresponding IP address to the UE.

Specifically, the MME obtains the user subscription data of the UE from the HSS, and the PDN type of the UE is recorded in the user subscription data. If the PDN type of the UE recorded in the user subscription data is IPv4v6PDN, the PDN type requested by the UE is valid. The MME further learns the UE's ability to support various modes according to the MS RadioAccess Capability information in the attach request, and determines that the UE only supports the LTE mode, that is, it is a single-mode terminal.

In step 203, the MME sets the PDN type of the UE to IPv4v6PDN, and sends a Create Session Request message carrying the PDN type to the S-GW.

Specifically, the MME sets the PDN type of the UE to IPv4v6PDN, and sets the DABF, such as setting the DABF value to 1, and then the MME sends a "Create Session Request" message to the S-GW, which carries the DABF value.

In step 204, the S-GW sends a Create Session Request message to the PDN GW.

In step 205, the PDN GW sends a Create Session Response message to the S-GW according to the Create Session Request message, and the S-GW sends the Create Session Response message to the MME.

In step 206, the MME sends an Attach Accept message to the UE, which includes the IPv6 interface identifier and IPv4 address.

Step 207, the UE sends an RS message to the PDN GW, requesting the PDN GW to send an RA message.

In step 208, the PDN GW responds to RA immediately after receiving the RS message, or periodically sends an RA message to the UE, and the RA message contains the same IPv6 prefix provided in the default bearer establishment phase. After receiving the RA message, the mobile terminal constructs a complete IPv6 address through the method of stateless address automatic configuration.

It should be noted that for single-mode terminals in 2/3G mode, replace the attach request in the above steps with a PDP activation request, replace the MME with the GGSN, and replace the PDN with the PDP. Based on the above process, the GGSN can receive 2/3G After the single-mode terminal in the single-mode mode sends a PDP activation request whose PDP type is IPv4v6, the PDP type of the single-mode terminal is set to IPv4v6, and then the process of assigning an IPv4 address and an IPv6 address to the single-mode terminal.

In the embodiment of the present invention, when the UE is a single-mode terminal, the network side sets the bearer type of the UE to IPv4v6, and assigns IPv4 and IPv6 addresses to the UE, thereby making full use of the IPv4v6 bearer type to allocate IPv4 and IPv6 addresses and reducing core network costs.

Embodiment two

Embodiment 2 of the present invention provides a method for allocating IP addresses. When the UE sends an attach request or a PDP activation request (that is, an address application request), it carries the PDN/PDP type (that is, the bearer type) supported by each mode of the UE, and the MME/SGSN When determining that all modes of the UE support IPv4v6PDN/PDP according to the attach request or the PDP activation request, the UE is allowed to set the PDN/PDP type as IPv4v6PDN/PDP. Specifically, as shown in Figure 3, the method includes the following steps:

In step 301, the UE sends an Attach Request/PDP Activation message to the MME/SGSN, and the PDN/PDP type in the Attach Request/PDP Activation message is IPv4v6 PDN/PDP.

When the UE is an LTE terminal, it supports the LTE mode, and may also support the 2/3G mode (multi-mode terminal). The UE sends an attach request to the MME, and the request carries the PDN type, APN, MS Radio Access Capability requested by the UE, and the PDN/PDP types supported by each mode supported by the LTE terminal. When the UE is a 2/3G terminal, the UE sends a PDP activation request to the SGSN. The PDP activation request carries the PDP type, APN and MS Radio Access Capability requested by the UE, and the PDN/PDP type supported by the 2/3G terminal. Specifically, the mode supported by the UE is carried in the attach request or PDP activation request, and by introducing a newly defined IE (Information Element, information unit) or PCO (Protocol Configuration Options, protocol configuration option) in the attach request or PDP activation request etc., used to indicate the PDN/PDP type supported by each mode of the terminal. Among them, IE is an extended field. You can set the value of this extended field to indicate the PDN/PDP type supported by the mode supported by the UE. For example, the value of the extended field is 1 to indicate that the 2/3G mode of the UE supports IPv4v6PDN/PDP. The extended field A value of 2 indicates that the 2/3G mode of the UE supports IPv4 PDN/PDP, and a value of 3 indicates that the 2/3G mode of the UE supports IPv6 PDN/PDP. The UE can also report the PDN/PDP type supported by the mode supported by the UE by extending a new option in the PCO.

In step 302, the MME/SGSN receives the attach request/PDP activation message sent by the UE, and sets the PDN/PDP type of the UE according to the type and capability of the UE.

Specifically, the MME learns from the attach request that the UE only supports LTE mode, that is, the UE is an LTE single-mode terminal, then the MME sets the PDN type of the UE to IPv4v6PDN according to the method described in Embodiment 1. If the MME knows that the UE supports LTE and 2/3G modes, that is, the UE is an LTE multimode terminal, the MME further obtains the PDN type/PDP type supported by the UE's LTE mode and 2/3G mode, or only obtains the UE's 2/3G The PDP type supported by the mode, if the 2/3G mode of the UE supports IPv4v6PDP, set the PDN type of the UE to IPv4v6PDN; if the 2/3G mode of the UE does not support IPv4v6PDP, refer to the process shown in Figure 1 to process the attach request.

The SGSN receives the PDP activation message sent by the UE. If the 2/3G mode supported by the UE supports IPv4v6PDP, set the PDP type of the UE to IPv4v6PDP; if the 2/3G mode of the UE does not support IPv4v6PDP, refer to the process shown in Figure 1 The attach request is processed.

It should be noted that the MME/SGSN may not consider whether the UE is a single-mode or multi-mode terminal, but directly set the PDN/PDP type of the UE according to the PDN/PDP types supported by each mode of the UE carried in the attach request/PDP activation message .

In step 303, the MME/SGSN sets the DABF, and sends a Create SessionRequest message to the S-GW, in which the PDN/PDP type carried is IPv4v6PDN/PDP.

Specifically, the MME sets the DABF, such as setting the DABF value to 1, and then the MME sends a "Create Session Request" message to the S-GW, which carries the DABF value and the PDN/PDP type is IPv4v6PDN/PDP.

Steps 304 to 309 are the same as steps 203 to 208 and will not be repeated here.

In the embodiment of the present invention, when the UE is a single-mode terminal, the network side sets the bearer type of the UE to IPv4v6, and assigns IPv4 and IPv6 addresses to the UE; when the UE is a multi-mode terminal, but all modes of the UE support the IPv4v6 bearer type , the network side sets the bearer type of the UE to IPv4v6, and assigns IPv4 and IPv6 addresses to the UE; thereby making full use of the IPv4v6 bearer type to allocate IPv4 and IPv6 addresses, reducing core network costs.

Embodiment three

Embodiment 3 of the present invention provides a method for allocating IP addresses. When a UE sends an attach request or a PDP activation request, the requested PDP/PDN type needs to be set according to the PDP/PDN types supported by each mode supported by the UE, namely Apply according to the minimum set of IP address capabilities supported by all modes. The terminal only applies for IPv4v6 PDP/PDN when all modes support IPv4v6. Specifically, as shown in Figure 4, the method includes the following steps:

In step 401, the UE sets the applied PDP/PDN type according to its own type and each mode's ability to support IP addresses.

Specifically, if the UE is an LTE single-mode terminal, it can apply for IPv4PDN, IPv6PDN, and IPv4v6PDN; if the UE is a 2/3G single-mode terminal, when the UE's 2/3G mode supports IPv4v6

For PDP, you can apply for IPv4PDP, IPv6PDP and IPv4v6PDP. If the UE is an LTE multimode terminal, when the 2/3G mode supports IPv4v6PDP, it can apply for IPv4PDN, IPv6PDN and IPv4v6PDP/PDN. If all modes of the UE support IPv4v6, the UE sets the requested PDP/PDN type to IPv4v6PDP/PDN. If the 2/3G mode supported by the UE does not support IPv4v6

PDP, the UE cannot apply for IPv4v6PDP/PDN, and applies for the intersection of the PDP/PDN types supported by each mode. For example, the 2/3G mode supports IPv4PDP, and the LTE mode supports IPv4PDN, IPv6PDN, and IPv4v6PDN, then the UE applies for IPv4PDP/PDN.

In step 402, the UE sends an Attach Request/PDP Activation message to the MME/SGSN, and the PDN/PDP type in the Attach Request/PDP Activation message is IPv4v6 PDN/PDP.

In step 403, the MME/SGSN searches the subscription data of the user, sets the PDN/PDP type of the UE in combination with the operator's preset policy, and assigns an IP address to the UE through interaction with the S-GW and the PDN-GW.

For the specific process of step 403, reference may be made to the method shown in FIG. 1 , which will not be repeated here.

In the embodiment of the present invention, the terminal can obtain the terminal type, the terminal operating system and the support capability of different modes for the IP address through configuration or an automatic discovery mechanism, which is not limited in the present invention.

In the embodiment of the present invention, when all modes of the UE support the IPv4v6 bearer type, the UE carries the IPv4v6 bearer type (IPv4v6PDN/PDP) in the attach request or the PDP activation request; otherwise, the UE reports the intersection of the bearer types supported by each mode , when the bearer type reported by the UE is the same as the bearer type recorded in the user subscription, the network side sets the bearer type of the UE to the bearer type reported by the UE, so that the IPv4v6 bearer type can be fully utilized to allocate IPv4 and IPv6 addresses, and the cost of the core network can be reduced.

Embodiment four

Based on the same or similar technical concept as the above method embodiment, Embodiment 4 of the present invention provides a network side device, as shown in FIG. 5 , including:

The receiving unit 11 is configured to receive an address application request sent by the user terminal, where the address application request carries the bearer type requested by the user terminal as IPv4v6;

A judging unit 12, configured to judge whether the user terminal is a single-mode terminal;

The setting unit 13 is configured to set the bearer type of the user terminal to IPv4v6 when the user terminal is a single-mode terminal.

The setting unit 13 is further configured to: when the user terminal is a multi-mode terminal, set the bearer type of the user terminal according to the subscription data of the user terminal and operator policies.

As shown in FIG. 6, a type obtaining unit 14 is also included, configured to obtain bearer types supported by all modes of the user terminal carried in the address application request when the user terminal is a multi-mode terminal; corresponding The setting unit 13 is further configured to: when all modes of the user terminal support the IPv4v6 bearer type, set the bearer type of the user terminal to IPv4v6.

The type obtaining unit 14 is further configured to: obtain the bearer types supported by all modes of the user terminal according to the information carried in the extension field in the address application request or the extension option in the protocol configuration option.

The judging unit 12 is further configured to: acquire the wireless access capability information of the mobile station carried in the address application request, and judge the user terminal according to the capability of the user terminal to support various network modes carried in the information Whether it is a single-mode terminal.

The setting unit 13 is further configured to: set the dual-stack address bearer flag of the user terminal when the bearer type of the user terminal is set to IPv4v6.

Also includes a subscription acquisition unit 15, configured to obtain the bearer type recorded in the subscription data of the user terminal; the setting unit 13 is also used for: when the bearer type recorded in the subscription data of the user terminal is IPv4v6, set The bearer type of the user terminal is IPv4v6.

The single-mode terminal is specifically an LTE single-mode terminal. The address application request is specifically an attach request or a PDP activation request.

Embodiment five

Based on the same or similar technical concept as the above method embodiment, Embodiment 5 of the present invention provides a network side device, as shown in FIG. 7 , including:

The receiving unit 21 is configured to receive an address application request sent by the user terminal, where the address application request carries the bearer type requested by the user terminal as IPv4v6;

An obtaining unit 22, configured to obtain bearer types supported by all modes of the user terminal carried in the address application request;

The setting unit 23 is configured to set the bearer type of the user terminal to IPv4v6 when all modes of the user terminal support the IPv4v6 bearer type.

The obtaining unit 22 is further configured to: obtain the bearer types supported by all modes of the user terminal according to the information carried in the extension field in the address application request or the extension option in the protocol configuration option. The user terminal is a multimode terminal.

Embodiment six

Based on the same or similar technical concept as the above method embodiment, Embodiment 6 of the present invention provides a user terminal, as shown in FIG. 8 , including:

The acquiring unit 31 is configured to acquire bearer types supported by each network mode supported by itself;

The sending unit 32 is configured to send an address application request to the network side, and when all modes of the user terminal support the IPv4v6 bearer type, the bearer type carried in the address application request is IPv4v6. The sending unit 32 is further configured to: when the user terminal has a mode that does not support the IPv4v6 bearer type, the bearer type carried in the address application request is the intersection of the bearer types supported by each network mode.

Corresponding to the user terminal provided in Embodiment 6 of the present invention, this embodiment of the present invention also provides a network side device, as shown in FIG. 9 , including:

A receiving unit 41, configured to receive an address application request sent by a user terminal;

A setting unit 42, configured to set the bearer type of the user terminal according to the subscription data of the user terminal. Specifically, if the bearer type carried in the address application request is consistent with the bearer type recorded in the subscription data of the user terminal, set the bearer type of the user terminal to the bearer type carried in the address application request.

Embodiment seven

Based on the same or similar technical concept as the above method embodiments, Embodiment 7 of the present invention provides a user terminal, as shown in FIG. 10 , including:

An obtaining unit 51, configured to obtain bearer types supported by each network mode supported by the user terminal;

The sending unit 52 is configured to send an address application request to the network side, where the address application request carries bearer types supported by each network mode supported by the user terminal.

The sending unit 52 is further configured to carry bearer types supported by each network mode supported by the user terminal through an extension field in the address application request or an extension option in a protocol configuration option.

In the embodiment of the present invention, when the user terminal is a single-mode terminal, the network side sets the bearer type of the user terminal to IPv4v6, and assigns IPv4 and IPv6 addresses to the user terminal, thereby making full use of the IPv4v6 bearer type to allocate IPv4 and IPv6 addresses, reducing the core net cost.

Through the description of the above embodiments, those skilled in the art can clearly understand that the present invention can be implemented by means of software plus a necessary general-purpose hardware platform, and of course also by hardware, but in many cases the former is a better implementation Way. Based on this understanding, the essence of the technical solution of the present invention or the part that contributes to the prior art can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions to make a A computer device (which may be a personal computer, a server, or a network device, etc.) executes the methods described in various embodiments of the present invention.

Those skilled in the art can understand that the drawing is only a schematic diagram of a preferred embodiment, and the modules or processes in the drawing are not necessarily necessary for implementing the present invention.

Those skilled in the art can understand that the modules in the device in the embodiment can be distributed in the device in the embodiment according to the description in the embodiment, or can be located in one or more devices different from the embodiment according to corresponding changes. The modules in the above embodiments can be combined into one module, and can also be further divided into multiple sub-modules.

The serial numbers of the above embodiments of the present invention are for description only, and do not represent the advantages and disadvantages of the embodiments.

The above disclosures are only a few specific embodiments of the present invention, however, the present invention is not limited thereto, and any changes conceivable by those skilled in the art shall fall within the protection scope of the present invention.

Claims (20)

1. a method for IP address assignment, is characterized in that, comprising:

Network side receives the application IP addresses request that user terminal sends, and the bearer types carrying described user terminal requests in described application IP addresses request is IPv4v6;

When according to described application IP addresses request, described network side determines that described user terminal is single-mode terminal, the bearer types that described network side arranges described user terminal is IPv4v6, is described user terminal distributing IP v4 and IPv6 address;

Wherein, when described user terminal is multimode terminal, the bearer types that all patterns that described network side obtains the described user terminal carried in described application IP addresses request are supported respectively; If all patterns of described user terminal all support IPv4v6 bearer types, the bearer types that described network side arranges described user terminal is IPv4v6, is described user terminal distributing IP v4 and IPv6 address.

2. the method for claim 1, is characterized in that, when described user terminal is multimode terminal, described method also comprises:

Described network side arranges the bearer types of described user terminal according to the subscription data of described user terminal and carrier policy, for described user terminal distributes corresponding IP address.

3. the method for claim 1, it is characterized in that, the bearer types that all patterns that described network side obtains the described user terminal carried in described application IP addresses request are supported respectively comprises: the information that described network side carries according to the extended field in described application IP addresses request or the scaling option in protocol configuration option, the bearer types that all patterns obtaining described user terminal are supported respectively.

4. method as claimed in claim 1 or 2, it is characterized in that, according to following manner, described network side judges whether described user terminal is single-mode terminal: described network side obtains the wireless access capability information of the mobile site carried in described application IP addresses request, judges whether described user terminal is single-mode terminal according to the tenability of described user terminal to various network schemer of carrying in this information.

5. method as claimed in claim 1 or 2, is characterized in that, the bearer types that described network side arranges described user terminal also comprises: described network side arranges two stack address bearing marks of described user terminal after being IPv4v6.

6. method as claimed in claim 1 or 2, is characterized in that, the bearer types that described network side arranges described user terminal also comprises before being IPv4v6: described network side determines that the bearer types recorded in the subscription data of described user terminal is IPv4v6.

7. the method for claim 1, is characterized in that, described single-mode terminal is specially LTE single-mode terminal.

8. the method for claim 1, is characterized in that, described application IP addresses request is specially attachment request or PDP activation request.

9. a method for IP address assignment, is characterized in that, comprising:

Network side receives the application IP addresses request that user terminal sends, and the bearer types carrying described user terminal requests in described application IP addresses request is IPv4v6; Described user terminal is multimode terminal;

The bearer types that all patterns that described network side obtains the described user terminal carried in described application IP addresses request are supported respectively; If all patterns of described user terminal all support IPv4v6 bearer types, the bearer types that described network side arranges described user terminal is IPv4v6, is described user terminal distributing IP v4 and IPv6 address.

10. method as claimed in claim 9, it is characterized in that, the bearer types that all patterns that described network side obtains the described user terminal carried in described application IP addresses request are supported respectively comprises: the information that described network side carries according to the extended field in described application IP addresses request or the scaling option in protocol configuration option, the bearer types that all patterns obtaining described user terminal are supported respectively.

11. 1 kinds of network equipments, is characterized in that, comprising:

Receiving element, for receiving the application IP addresses request that user terminal sends, the bearer types carrying described user terminal requests in described application IP addresses request is IPv4v6;

Judging unit, for judging whether described user terminal is single-mode terminal;

Setting unit, for when described user terminal is single-mode terminal, the bearer types arranging described user terminal is IPv4v6;

Wherein, also comprise type acquiring unit, for when described user terminal is multimode terminal, the bearer types that all patterns obtaining the described user terminal carried in described application IP addresses request are supported respectively;

Described setting unit also for: when all patterns of described user terminal all support IPv4v6 bearer types, the bearer types arranging described user terminal is IPv4v6.

12. network equipments as claimed in claim 11, is characterized in that, described setting unit also for: when described user terminal is multimode terminal, the bearer types of described user terminal is set according to the subscription data of described user terminal and carrier policy.

13. network equipments as claimed in claim 11, it is characterized in that, described type acquiring unit is also for the information of carrying according to the extended field in described application IP addresses request or the scaling option in protocol configuration option, the bearer types that all patterns obtaining described user terminal are supported respectively.

14. network equipments as claimed in claim 11, it is characterized in that, described judging unit also for: according to the tenability of described user terminal to various network schemer of carrying in this information, the wireless access capability information obtaining the mobile site carried in described application IP addresses request, judges whether described user terminal is single-mode terminal.

15. network equipments as claimed in claim 11, is characterized in that, described setting unit is also for the two stack address bearing marks arranging described user terminal.

16. network equipments as described in any one of claim 11 or 12, is characterized in that, also comprise signing acquiring unit, for obtaining the bearer types recorded in the subscription data of described user terminal;

Described setting unit also for: when the bearer types recorded in the subscription data of described user terminal is IPv4v6, the bearer types arranging described user terminal is IPv4v6.

17. network equipments as claimed in claim 11, it is characterized in that, described single-mode terminal is specially LTE single-mode terminal.

18. network equipments as claimed in claim 11, is characterized in that, described application IP addresses request is specially attachment request or PDP activation request.

19. 1 kinds of network equipments, is characterized in that, comprising:

Receiving element, for receiving the application IP addresses request that user terminal sends, the bearer types carrying described user terminal requests in described application IP addresses request is IPv4v6; Described user terminal is multimode terminal;

Acquiring unit, the bearer types that all patterns for obtaining the described user terminal carried in described application IP addresses request are supported respectively;

Setting unit, all support IPv4v6 bearer types for all patterns when described user terminal, the bearer types arranging described user terminal is IPv4v6.

20. network equipments as claimed in claim 19, it is characterized in that, described acquiring unit is also for the information of carrying according to the extended field in described application IP addresses request or the scaling option in protocol configuration option, the bearer types that all patterns obtaining described user terminal are supported respectively.