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Routing area update method, device, system, ue, sgsn and medium

An update method and technology of routing area, applied in the field of core network, can solve the problems of update, inability to perform routing area, etc.

Active Publication Date: 2021-01-15
CHINA MOBILE COMM LTD RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The embodiment of the present invention discloses a routing area update method, device, system, UE, SGSN and medium, which are used to solve the problem that the routing area cannot be updated when the UE in the LTE Light Connection state moves to a 2G / 3G network in the prior art The problem

Method used

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  • Routing area update method, device, system, ue, sgsn and medium
  • Routing area update method, device, system, ue, sgsn and medium
  • Routing area update method, device, system, ue, sgsn and medium

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Embodiment 1

[0062] figure 1 A schematic diagram of a routing area update process provided by Embodiment 1 of the present invention, the process includes the following steps:

[0063] S101: The mobile terminal in the LTE light Connection state identifies whether it has selected a cell served by 2G / 3GSGSN; if yes, proceed to S102, and if not, proceed to S101.

[0064] The routing area update method provided by the embodiment of the present invention is applied to a UE, and the UE is in a 4G network and is in an LTElight Connection state.

[0065] In the 4G network, the UE may be in the LTE light Connection state, and the UE in the LTE lightConnection state can identify whether it has selected a cell served by the SGSN under the 2G / 3G network, specifically the radio access network TTRAN cell or GERAN cell, If yes, the UE performs S102, otherwise, the UE always performs the above identification process of S101.

[0066] For the UE, when the context information of the UE is saved on the base...

Embodiment 2

[0073] In order to accurately send the RAU request to the SGSN in the 2G / 3G network, on the basis of the above-mentioned embodiment 1, in the embodiment of the present invention, as follows figure 1 As shown, if the judgment result of the above S102 is no, that is, the NAS of the mobile terminal is not in the ECM-idle state, then perform S104: switch the NAS of the mobile terminal from the ECM-connected state to the ECM-idle state, and then Go to S103: Send a RAU request to the SGSN.

[0074] In the embodiment of the present invention, the NAS of the mobile terminal may be in the ECM-connected state or in the ECM-idle state. If it is not in the ECM-idle state, it will be in the ECM-connected state. When the NAS switches from the ECM-connected state to the ECM-idle state, specifically, the RRC layer of the mobile terminal instructs the NAS of the mobile terminal to switch from the ECM-connected state to the ECM-idle state.

[0075] The above-mentioned process is described belo...

Embodiment 3

[0080] image 3 A schematic diagram of a routing area update process provided by Embodiment 3 of the present invention, the process includes the following steps:

[0081] S301: The SGSN receives a RAU request sent by a mobile terminal in the LTE light Connection state, wherein the RAU request is that the mobile terminal recognizes that it has selected a cell served by the 2G / 3G SGSN, and its own NAS is in Sent in ECM-idle state;

[0082] S302: Send a context confirmation message carrying the mobile terminal identifier to the MME, so that the MME sends an S1UE context release command context release command to the base station, so that the base station releases the connection with the serving gateway corresponding to the mobile terminal.

[0083] The routing area updating method provided by the embodiment of the present invention is applied to the SGSN. The SGSN is in a 2G / 3G network.

[0084] In the 4G network, the UE may be in the LTE light Connection state, and the UE in ...

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Abstract

The invention discloses a routing area update method, device and system, UE (User Equipment), a SGSN and a medium, and is used for solving the problem that routing area update cannot be performed whenthe UE in the LTE Light Connection moves to 2G / 3G in the prior art. The method comprises the following steps: identifying whether the UE in an LTE (Long Term Evolution) light Connection state selectsa cell served by the 2G / 3G SGSN; and if an NAS (Non-Access Stratum) of the UE is in an ECM (Evolved Packet System Connection Management)-idle state, sending an RAU (Routing Area Update) request to the SGSN, so that the SGSN sends a context confirmation message to an MME (Mobility Management Entity), so that the MME sends an S1UE context release command to a base station, thus the base station releases the connection of a service gateway corresponding to the UE. The base station releases the connection and avoids an error in a transmission channel of downlink data, so as to enable the UE to interact with a network layer.

Description

technical field [0001] The present invention relates to the field of core network technology, in particular to a routing area updating method, device, system, UE, SGSN and media. Background technique [0002] The 4G network defines the state of the user equipment (User Equipment, UE) in each network element in the network, as well as the transfer mode between different states. The network elements include: base station (Evolved Node-B, eNodeB), mobility Management entity (Mobility Management Entity, MME) and so on. [0003] When the UE is in the 4G network, it may be in the Radio Resource Control protocol (Radio Resource Control, RRC) idle state (idle) and the evolved packet system (Evolved Packet System, EPS) Connection Management (Connection Management) idle mode, that is, ECM- idle, or in RRC connected state connected and ECM-connected. The RRC idle and RRC connected respectively refer to the state of the UE on the base station and the state of the UE on the RRC layer. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W36/00H04W40/36H04W76/22H04W76/27H04W36/14
CPCH04W36/0022H04W36/0033H04W36/0066H04W36/14H04W40/36
Inventor 刘超孙滔
Owner CHINA MOBILE COMM LTD RES INST
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