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

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Problems solved by technology

[0021] The embodiment of the present invention provides a method and device for selecting an IP address, which solv

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
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Example Embodiment

[0047] In the first embodiment, in an EPS network, in order to access the PDN, the UE establishes multiple bearers as needed, and uses the same IP address for multiple bearers served by a PDN. Generally, in the process of establishing the first bearer (which can be called the default bearer) to the PDN, the gateway assigns an IP address to the UE, which can be two IP addresses of both IPv4 and IPv6 versions; the prior art also After the bearer is established, the UE can obtain the IP address through other methods. This embodiment does not limit the two cases, and the scenario is mainly described by sending PDN network preferred IP address version capability information and typical service and / or service network preferred IP address version capability information 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 pre...

Example Embodiment

[0077] The second embodiment is different from the first embodiment in 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 completion, such as Figure 4 As 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 service and service network preferred IP address version capability information (for example, DNS preferred IP address version, IMS network (P-CSCF) preferred IP version), etc.

[0080] Preferably, the IP address version capability informati...

Example Embodiment

[0085] The third embodiment is a method for carrying preferred IP address version capability information in the process of establishing / modifying a dedicated bearer between the gateway and the UE when the UE needs to perform a specific service, such as Figure 5 As 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 performed.

[0088] Step 3: The gateway checks whether the existing bearer can meet the transmission requirements of the service. If not, it sends a dedicated bearer setup message to the UE to create a new bearer; if it meets the requirements, it sends a dedicated bearer modification message to the UE. The bearer adds the filtering rules related to the specific service. The dedicated ...

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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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