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Method and apparatus for IP address selection

An IP address and version technology, applied in the field of communication, can solve problems such as resource waste, and achieve the effect of reducing resource waste and delay

Active Publication Date: 2009-07-15
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0021] The embodiment of the present invention provides a method and device for selecting an IP address, which solves the problem of waste of resources in selecting an IP address version in the dual-stack situation of the prior art

Method used

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  • Method and apparatus for IP address selection
  • Method and apparatus for IP address selection
  • Method and apparatus for IP address selection

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Embodiment 1, in the EPS network, in order to access the PDN, the UE will establish multiple bearers as needed, and multiple bearers serving a PDN use the same IP address. Generally, in the process of establishing the first bearer (which can be called the default bearer) to the PDN, the gateway allocates an IP address for the UE, which can be two IP addresses in both IPv4 and IPv6 versions; After the bearer is established, the UE is allowed to obtain an IP address in other ways. This embodiment does not limit these two situations, and mainly uses the scenario of sending the preferred IP address version capability information of the PDN network and the preferred IP address version capability information of typical services and / or service networks during the establishment of the default bearer. . During the establishment of the default bearer, the gateway notifies the UE of the preferred IP address version capability information of the served PDN network and the preferre...

Embodiment 2

[0077] The difference between Embodiment 2 and Embodiment 1 is that the process of establishing a default bearer between the UE and the gateway is initiated by the UE, and the gateway directly responds to the completion, such as Figure 4 shown, including the following steps:

[0078] Step 1. The UE sends a bearer activation request message to the gateway.

[0079] Step 2: The gateway sends a bearer activation response message to the UE. In addition to the IPv4 and / or IPv6 address allocated by the gateway to the UE, the message may also include preferred IP address version capability information, such as the preferred IP address version capability information (IPv4 or IPv6) of the PDN served by the bearer, and typical Any one or more of the preferred IP address version capability information of the service and the service network (such as the preferred IP address version of the DNS, the preferred IP version of the IMS network (P-CSCF), etc.

[0080] Preferably, the IP addres...

Embodiment 3

[0085] Embodiment 3 is a method for carrying preferred IP address version capability information during the process of establishing / modifying a dedicated bearer between the gateway and the UE when the UE needs to perform specific services, such as Figure 5 shown, including the following steps:

[0086] Step 1: When the UE needs to perform a specific service, it sends a resource allocation request message to the network.

[0087] Step 2: The gateway obtains the PCC rule of the service from the PCRF. If the PCC rule of the service is pre-configured on the gateway, this step does not need to be executed.

[0088] Step 3: The gateway checks whether the existing bearer can meet the transmission requirements of the service. If not, it will send a dedicated bearer establishment message to the UE to create a new bearer; if it is satisfied, it will send a dedicated bearer modification message to the UE. The bearer adds filtering rules related to the specific service. The preferred I...

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PUM

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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 [0001] The invention relates to the field of communication technology, in particular to an IP address selection method and device. Background technique [0002] The TCP (Transmission Control Protocol, Transmission Control Protocol) / IP (Internet Protocol, Internet Protocol) protocol family is generally divided into four layers, from top to bottom: application layer, transport layer, network layer and link layer. The application layer is responsible for handling specific application details, common protocol stacks such as FTP (File Transport Protocol, file transfer protocol), e-mail, etc.; the transport layer is used to provide end-to-end communication for applications on two hosts, common Protocol stacks such as TCP, UDP (User Datagram Protocol, User Datagram Protocol), etc.; the network layer is responsible for processing the activities of packet data packets in the network, such as routing of data packets, etc. Common protocol stacks such as IP, ICMP (Intern...

Claims

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Application Information

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IPC IPC(8): H04L29/06H04L12/56H04L45/741
Inventor 于益俊胡颖
Owner HUAWEI TECH CO LTD
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