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Method for supporting mobility of user equipment (UE)

A technology of user equipment and mobility, applied in the direction of electrical components, wireless communication, network data management, etc., can solve problems such as no solution

Inactive Publication Date: 2013-01-09
BEIJING SAMSUNG TELECOM R&D CENT +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Currently there is no relevant solution in 3GPP

Method used

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  • Method for supporting mobility of user equipment (UE)
  • Method for supporting mobility of user equipment (UE)
  • Method for supporting mobility of user equipment (UE)

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0092] This embodiment is applicable to the situation where the Sxx interface supports the GTP-U protocol, the UE supports business continuity, and the UE is handed over from an external network to a local network. For details, please refer to Figure 5 The method flow described. Such as Figure 5 As shown, the process includes:

[0093] Step 501: The source base station sends a handover request message to the source MME.

[0094] The message will carry the address information of the destination base station, and may also carry the destination LHN ID information. The purpose of this information is to help the MME determine whether the UE moves to a local network supporting LIPA. The source base station can obtain the network information of the target base station through the UE report.

[0095] Or, in the message, the source base station sends the local network information LHN ID where it is currently located to the source MME.

[0096] Step 502: The source MME sends a fo...

Embodiment 2

[0128] Same as the first embodiment, this embodiment is also applicable to the case where the UE supports service continuity and the UE is handed over from an external network to a local network. The difference from the first embodiment is that the Sxx interface of this embodiment supports GTP- For details about the C and GTP-U protocols, see Image 6 . Such as Image 6 As shown, the process includes:

[0129] Step 601-Step 615: The specific operations are the same as Step 501-Step 515, and will not be repeated here.

[0130] Step 616: The target HeNB directly sends a modify bearer request to the LGW, and the message carries the address of the HEnb and tunnel information for establishing downlink data transmission.

[0131] Step 617: The LGW replies a bearer modification reply message to the target HeNB.

[0132] Step 618-Step 620: Same as Step 518-Step 520, and will not be repeated here.

[0133] So far, the working flowchart of the embodiment of the method for supportin...

Embodiment 3

[0136] This embodiment is applicable to the case where the UE supports service continuity and the UE is handed over from the local network to an external network. For details, please refer to Figure 7 The method flow described. Such as Figure 7 As shown, the process includes:

[0137] Step 701: The source base station sends a handover request message to the MME. The message will carry the address information of the destination base station, and may also carry the destination LHN ID information. The purpose of this information is to help the MME determine whether the UE will move out of the local network supporting LIPA. The source base station can obtain the LHN ID information of the target network through the UE report.

[0138] 702: The source MME sends a forwarding handover request to the target MME. The message includes MME UE context information, which includes bearer information corresponding to the UE, where the bearer information also includes APN information, L...

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Abstract

The invention provides a method for supporting mobility of user equipment (UE). When a UE moves to a network supporting LIPA (loop initialization pre-allocation) or moves out of the network supporting LIPA, an optimal user interface node is selected for the UE, and the optimization of network routing and the network resource is guaranteed. When the service continuity of the UE needs to be supported, and the UE remotely accesses to the network supporting LIPA from other networks, if the UE moves to the network supporting LIPA, the uninterrupted remote service of the UE is guaranteed, and meanwhile an optimal user interface node is selected by the network for the UE. When the UE moves other networks from the network supporting LIPA, the uninterrupted LIPA service of the UE is guaranteed, and the optimal user interface node is selected for the UE by the network. The method guarantees the user experience and also guarantees the optimization of the network resource.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a method for supporting user equipment (UE) mobility. Background technique [0002] figure 1 It is a system architecture diagram of System Architecture Evolution (SAE), wherein User Equipment (UE) 101 is a terminal device for receiving data; Evolved Universal Terrestrial Radio Access Network (E-UTRAN) 102 is a wireless access network, which includes The macro base station (eNodeB / NodeB) that provides the UE with access to the wireless network interface; the Mobility Management Entity (MME) 103 is responsible for managing the mobility context, session context and security information of the UE; the Serving Gateway (SGW) 104 mainly provides user plane functions, MME 103 and SGW 104 may be in the same physical entity; Packet Data Network Gateway (LGW) 105 is responsible for functions such as charging and lawful interception, and may also be in the same physic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W8/02H04W36/18
CPCH04W36/18H04W8/02H04W8/082H04W36/14
Inventor 梁华瑞王弘许丽香
Owner BEIJING SAMSUNG TELECOM R&D CENT
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