Method for switching terminal across network elements and mobility management network element

A technology for accessing network elements and mobility, applied in the field of communication, can solve problems such as terminal inability to communicate, and achieve the effect of normal communication

Active Publication Date: 2009-08-05
XFUSION DIGITAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0016] The technical problem solved by the embodiments of the present invention is to provide a method for handover of a terminal across access network elements and a mobility management network element, so as to avoid the problem that the ISR mechanism of the terminal does not correspond to the ISR mechanism of the network side. The problem of unable to communicate after the meta

Method used

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  • Method for switching terminal across network elements and mobility management network element
  • Method for switching terminal across network elements and mobility management network element
  • Method for switching terminal across network elements and mobility management network element

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Embodiment 1, a method for switching a terminal across access network elements, the flow chart is as follows figure 2 shown, including:

[0040] A1, the terminal switches from the first access network element to the second access network element;

[0041] It can be understood that, in this embodiment, the process of handing over the terminal from the first access network element to the second access network element may be implemented in an existing conventional manner.

[0042] Because different access network elements have different coverage areas, when the terminal switches from the coverage area of ​​one access network element to the coverage area of ​​another network element, it is necessary to switch the access network element to ensure that the terminal normal business communications.

[0043] A2, judging whether the switching has caused the service gateway to change; if yes, proceed to step A3; if not, end.

[0044] A3. Notify the terminal to disable the ISR ...

Embodiment 2

[0067] Embodiment 2, a mobility management network element 300, as shown in FIG. 3(a), includes: a judgment unit 310 and an ISR shutdown notification unit 320;

[0068] The judging unit 310 is configured to judge whether the serving gateway has changed due to the switching after the terminal switches from the first access network element to the second access network element;

[0069] The ISR deactivation notification unit 320 is configured to notify the terminal to deactivate the ISR mode when the switching results in a change of the serving gateway.

[0070] As shown in Figure 3(b), in this embodiment, the ISR shutdown notification unit may include: a message sending unit 321 and a timer 322;

[0071] The message sending unit 321 is used to judge whether the mobility management network element receives the location area update request sent by the terminal before the timer expires; if received, the terminal is notified to deactivate the ISR through the location area update req...

Embodiment 3

[0079] Embodiment 3, a method for switching a terminal across access network elements, the signaling process is as follows Figure 4 shown, including:

[0080] 401. The target-side access network element sends a channel switch request to the mobility management network element, notifying the mobility management network element that the UE is already at the target-side access network element; the mobility management network element decides to switch the Serving GW.

[0081] 402. The mobility management network element sends a bearer creation request to the Serving GW on the target side, requesting to establish a bearer resource.

[0082] 403a. The Serving GW on the target side sends an update bearer request to the PDN GW.

[0083] 403b. The PDN GW returns an update bearer response to the Serving GW on the target side.

[0084] 404. The Serving GW on the target side returns a create bearer response to the mobility management network element. The downlink data channel is opene...

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Abstract

The invention discloses a method for switching a terminal between access network elements, and a mobile management network element. A terminal is switched to a second access network element from a first access network element; if the switching causes a change of a service gateway, the terminal is informed to close an ISR mode so as to avoid the problem that the uncorrespondance between an ISR mechanism at the terminal and an ISP mechanism on the network side results in the terminal communication failure after the terminal is spanned over a mobile management network element; and after the ISR mechanism at the terminal is closed and the terminal is switched over the mobile network element, the terminal can be attached to the network again so as to realize the normal communication.

Description

technical field [0001] The present invention relates to the field of communication technology, and in particular to a method for switching a terminal across access network elements and a mobility management network element. Background technique [0002] The core network of the wireless evolved network mainly includes three logical functional bodies: Mobility Management Entity (MME), Serving Gateway (Serving Gateway, Serving GW), and Packet Data Network Gateway (PDN Gateway). The MME is a mobility management entity, responsible for NAS signaling and NAS signaling encryption, roaming, tracking and other functions, assigning user temporary identities, security functions, etc. It corresponds to the control plane part of the SGSN in the current UMTS system. The serving gateway is responsible for the local mobility anchor point and the mobility anchor point within the 3GPP system, as well as lawful interception-related information; the PDN Gateway is responsible for policy enforce...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W8/24H04W36/12H04W76/06
Inventor 周汉吴问付陈中平
Owner XFUSION DIGITAL TECH CO LTD
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