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Context negotiation method

A context and entity technology, applied in the field of mobile communication access

Inactive Publication Date: 2008-02-20
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the cooperative mode, every time the UE accesses the SGSN or MME, it needs to obtain the context from the other entity (ie MME or SGSN). Unnecessary context synchronization process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0110] Embodiment 1: UE initially accesses 2G / 3G network.

[0111] The process of this embodiment is shown in Figure 3, including the following steps:

[0112] Step 301: The UE starts up and accesses the 2G / 3G network and reports the local CRN value to the SGSN, which is called UE_CRN, assuming that the initial CRN is set to 0;

[0113] Step 302: Create a context about the UE in the SGSN and save the CRN reported by the UE; hereinafter, the CRN saved in the SGSN is called SGSN_CRN, which is 0 at this time; when the UE is successfully registered, according to the CRN update algorithm, the UE_CRN Both UE_CRN and SGSN_CRN are incremented by 1, and both UE_CRN and SGSN_CRN become 1;

[0114] Step 303: The UE enters the evolved network and reports the local CRN to the MME;

[0115] Step 304: The MME creates relevant context about the UE in the evolved network; the specific process is as follows: the MME first compares the CRN reported by the UE with the CRN of the UE stored local...

Embodiment 2

[0119] Embodiment 2: UE initially accesses the SAE / LTE network.

[0120] The process of this embodiment is shown in Figure 4, including the following steps:

[0121] Step 401: UE boots up and accesses the network and reports the local CRN value to the MME. The CRN stored locally by the UE is called UE_CRN, assuming that the initial CRN is set to 0;

[0122] Step 402: Create a context about the UE in the MME and save the CRN reported by the UE; the CRN saved in the MME is called MME_CRN, which is 0 at this time; when the UE is successfully registered, the UE_CRN and MME_CRN are both updated according to the CRN update algorithm. Incrementing by 1, both UE_CRN and MME_CRN become 1;

[0123] Step 403: The UE enters the 2G / 3G network and reports the local CRN to the MME;

[0124] Step 404: Create relevant context about the UE in the 2G / 3G network in the SGSN; the specific process is as follows: the SGSN first compares the CRN reported by the UE with the CRN of the UE stored loca...

Embodiment 3

[0127] Embodiment 3: Under the condition that the SGSN remains unchanged, the UE initiates the RAU process in the 2G / 3G network.

[0128] After the UE sends a RAU request to the SGSN, the SGSN will judge whether the CRN value reported by the UE matches the CRN value stored internally. If it matches, the SGSN does not need to initiate the process of requesting the context from the MME; otherwise, it needs to request the relevant context from the MME. Detailed process See as shown in Figure 5a or Figure 5b, including the following steps:

[0129] Step 501: UE sends a RAU request carrying UE_CRN to SGSN; RAU also includes old U-TMSI, old U-RA and / or S-TMSI, S-RA, which are irrelevant to the present invention;

[0130] Step 502: The SGSN judges whether the received UE_CRN matches the locally stored SGSN_CRN, and if it matches, it does not need to ask for the context from the MME, and proceeds to the normal RAU process, otherwise, executes step 503;

[0131] Step 503: SGSN sends a...

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Abstract

The utility model relates to a mobile communication access technical field, disclosing a context negotiating method, a subscriber equipment UE and a wireless access body are used to store the context value CRN of the UE. The utility model comprises following steps: A. The subscriber equipment sends access request with CRN to a first RAT body; B. The first RAT body judge whether the received CRN is matched with the CRN corresponding to the UE stored in the RAT body; if not, C process is executed, or the flow is exited; C. The first RAT body gets the context of UE from a second RAT body, and the first body RAT and UE update the UE and CRN stored locally. The utility model also discloses another context negotiating method. The utility model avoids unnecessary context synchronous process.

Description

technical field [0001] The invention relates to the technical field of mobile communication access, in particular to a context negotiation method. Background technique [0002] Currently, in the Third Generation Partnership Project (Three Generation Partnership Project, 3GPP), various vendors are actively researching on System Architecture Evolution (SAE) and Long Term Evolution (LTE) projects. The purpose of SAE or LTE is to provide a low-cost network that can reduce delay, increase user data rate, improve system capacity and coverage, only use packet switching (Packet Switching, PS) domain services, and the bearer network is IP bearer . [0003] At present, many new network architectures have appeared to achieve the above-mentioned goals. One of the more generally accepted network architectures is shown in Figure 1, which mainly includes the following parts: [0004] The radio access network (LTE RAN) of the evolved network is used to realize the access of the user equip...

Claims

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Application Information

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IPC IPC(8): H04Q7/38H04L12/56H04L29/06H04L9/00H04W76/04
CPCH04W76/041H04W76/22
Inventor 郭小龙孙颖
Owner HUAWEI TECH CO LTD
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