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Method and system for network access

A technology for accessing network and 3G network, applied in the field of wireless communication

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

However, when UE (User Equipment) moves between different RATs (Radio Access Technology), such as between 2G / 3G networks and evolved networks, it will cause frequent network registration processes due to changes in different networks.

Method used

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  • Method and system for network access

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 2

[0074] Embodiment 2: single TMSI method, that is, the ISR-activated UE only carries the TMSI assigned by the access RAT when accessing the network, and the ISR-inactive UE only carries the TMSI assigned by the last access RAT when accessing the network. In this way, when the ISR is activated, the two ISR-activated nodes need to save the address information of another RAT entity. This embodiment describes in detail the method for the UE to access the network.

[0075] Under this condition, when the ISR is required, the nodes of the two RATs are associated, that is, one node records related information of the other node, such as address information. When the access node accessed by the UE has not changed, the access node can find another RAT node according to the associated information; if the access node accessed by the UE changes, the access node can find the RAT node according to the TMSI carried by the UE The old node of the entry point RAT finds a node of another RAT accord...

Embodiment 3

[0090] Embodiment 3: Regardless of whether the ISR is activated or not, the method for the UE to access the network is described in detail under the condition that dual TMSIs are carried in the process of accessing the network.

[0091] Under this condition, the access node can find other nodes to obtain the context according to the TMSI, so there is no need for association between nodes, that is, related information of another node is recorded between nodes, such as address information.

[0092] The behavior of the UE in the embodiment of the present invention is as follows:

[0093] A UE whose ISR is not activated always initiates an update whose UpdateType is "Normal Update". The following update types are collectively referred to as normal update: "RA update", the type of update initiated when the UE enters an unregistered RA; "TAupdate", the type of update initiated when the UE enters an unregistered TA; "periodic Updating", the type of update initiated when the UE initi...

Embodiment 4

[0104] In the fourth embodiment, a method for UE in URA_PCH state to access the network is described in detail.

[0105] Since the URA_PCH is treated as Active, that is, the UE in the URA_PCH state needs to initiate a location update after entering the SAE, and at the same time needs to release the Iu connection existing in the 2G / 3G network. However, the inventors of this application found that if the UE enters the URA_PCH state without changing the bearer in 2G / 3G, that is, when there is no need for "ISR Synch", and enters the SAE to initiate an update with an UpdateType of "NormalUpdate", the MME will not report to the SGSN to interact, so the Iu connection cannot be released. Therefore "Normal Update" cannot be used in this case. At the same time, if the Update Type is "ISRSynch", the connected MME needs to obtain the context from the SGSN to trigger the release of the Iu connection. But the MME does not actually need to obtain the context from the SGSN, because if the M...

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Abstract

The invention provides a method and a system for accessing to network; wherein the method for accessing to network comprises: if a terminal UE activates ISR, when the bearer is changed in a fist RAT, 'ISR Synch' demand is set; when a second RAT node is accessed to, the position update with 'ISR Synch' update type is initiated, wherein the first RAT and the second RAT are different. If the UE fails to activate ISR or the UE does not have 'ISR Synch' demand, when the UE initiates position update and is accessed to the RAT node, the update type is 'Normal Update'. If the UE activates ISR, when the bearer is changed in the fist RAT, the signaling in the idle state is set and synchronous 'ISR Synch' demand is reduced; when the UE initiates position update and is accessed to the same RAT node with the first RAT, the update type is 'Normal Update'.

Description

technical field [0001] The present invention relates to wireless communication technology, in particular to a method and system for accessing a network. Background technique [0002] 3GPP (Third Generation Partnership Project) defines a third-generation wireless communication network technology standard UMTS (Universal Mobile Telecommunications System). Currently in 3GPP, various manufacturers are actively researching LTE (Long Term Evolved) / SAE (System Architecture Evolved). However, when UE (User Equipment) moves between different RATs (Radio Access Technology), such as between 2G / 3G networks and evolved networks, it will cause frequent network registration processes due to changes in different networks. [0003] The subject of ISR (Idle State Signaling Reduction, Idle State Signaling Reduction) is to reduce the impact of the registration / update of UEs in idle mode under inter RAT on the air interface. After the UE attaches (attach), it registers to an access network, su...

Claims

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Application Information

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IPC IPC(8): H04W8/02H04W60/00H04B7/26
Inventor 郭小龙张万强
Owner HUAWEI TECH CO LTD
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