Method and device for allocating mobile-node network address identifiers

A network address, mobile node technology, applied in the direction of network interconnection, network connection, data exchange network, etc., can solve the problem that the MN-NAI allocation method is not clearly pointed out, and achieve the effect of complete functions

Active Publication Date: 2009-09-23
DATANG MOBILE COMM EQUIP CO LTD
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0005] However, in the process of UE attaching, the allocation met

Method used

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  • Method and device for allocating mobile-node network address identifiers
  • Method and device for allocating mobile-node network address identifiers
  • Method and device for allocating mobile-node network address identifiers

Examples

Experimental program
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Embodiment Construction

[0038] When the UE attaches to the EPS system, the MME (Mobility Management Entity, mobile management entity) will select the Serving GW. If the Serving GW supports both the PMIP protocol and the GTP protocol, the MME needs to notify the Serving GW which S5 / S8 interface to use protocol.

[0039] There are two situations:

[0040] Case 1. If the S5 / S8 interface adopts the GTP protocol, the process when the UE attaches to the EPS system is as follows: figure 2 As shown, it specifically includes the following steps:

[0041] Step S11, the UE sends an Attach Request to the eNodeB.

[0042] Step S12, the eNodeB forwards the Attach Request to the new MME.

[0043] Step S13a, the new MME sends an Identification Request to the old MME / SGSN (Serving GPRS Support Node, serving general packet data service support node).

[0044] Step S13b, the old MME / SGSN feeds back an Identification Response.

[0045] Step S14a, the new MME sends an Identification Request to the UE.

[0046] In ...

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Abstract

The invention discloses a method for allocating mobile-node network address identifiers MN-NAI. The method comprises the following steps that: a mobility management entity MME sends a protocol indication message to a Serving gateway GW in order to instruct the Serving GW to adopt a specified protocol type; when the specified protocol type is a proxy mobile IP protocol PMIP, the Serving GW constructs and sets an MN-NAI in a Proxy Binding Update message, and sends the Proxy Binding Update message to a packet data network gateway PDN GW so as to establish a PMIP tunnel. The invention simultaneously discloses a device for realizing the method, and service gateway equipment comprising the device. The embodiment of the invention defines the allocation of the MN-NAI. The invention has the advantages of powerfully replenishing the prior communication process and communication proposal and perfecting system functions.

Description

technical field [0001] The present invention relates to the technical field of mobile communication, more specifically, to a method and device for allocating MN-NAI (Mobile Node Network Address Identifier). Background technique [0002] 3GPP has defined the architecture of EPS (Evolved Packet System, evolved packet switching system), such as figure 1 As shown, wherein, MME (Mobility Management Entity, Mobility Management Entity) is mainly responsible for mobility management and session management, Serving GW (Serving Gateway) is a user plane access gateway for user equipment to access the EPS core network, PDN GW (Packet Data NetworkGW, Packet Data Network Gateway) is the gateway for the EPS system to access the external PDN network, PCRF (Policyand Charging Rules Function, policy and charging rule functional entity) is between the external PDN network and the PDN GW, and is used for service data flow Control policies and charging rules. [0003] The interface between Serv...

Claims

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Application Information

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IPC IPC(8): H04L29/12H04L29/06H04L12/46H04L12/66H04L12/56
Inventor 徐晖熊春山沈宇希
Owner DATANG MOBILE COMM EQUIP CO LTD
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