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Control method for switching between network elements

A control method and network element technology, applied in the field of handover between networks, can solve problems such as being unable to locate UE, insufficient message content, and MME finding UE, etc.

Inactive Publication Date: 2009-07-22
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0020] The path switch request message defined in the current specification carries the MME UE S1AP ID (the S1AP identifier assigned by the MME to the user equipment) and the eNode B UE S1AP ID (the S1AP identifier assigned by the eNode B to the user equipment), where the eNode B UES1AP The ID is the newly assigned identity of the target eNode B, so it cannot be used to locate the UE; although the MME UE S1AP ID is the S1AP identity allocated by the MME for the UE, the MMEUE S1AP ID is unique within an S1 connection between an eNode B and MME, so A UE cannot be located within the MME range only through the MME UE S1AP ID
[0021] Therefore, the content of the message defined in the current specification is not sufficient. When the MME / S-GW does not change during handover between eNode Bs, the above method cannot enable the MME to find the corresponding UE after the location change

Method used

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  • Control method for switching between network elements
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  • Control method for switching between network elements

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Experimental program
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Embodiment 1

[0044] According to an embodiment of the present invention, a method for controlling handover between network elements is provided, and the method may pass figure 1 The E-UTRAN architecture shown is implemented. image 3 A flow chart of a method for controlling handover between network elements according to an embodiment of the present invention is shown. Such as image 3 As shown, the method includes the following processing (step S302-step S304):

[0045] Step S302, after the UE completes the handover from the source eNode B to the target eNode B, the target eNode B sends a path switch request message to the MME, and carries the first identifier and the source eNode B location identifier in the path switch request message;

[0046] The first identifier mentioned here is the MME UE S1AP ID assigned by the MME to the UE; the source eNode B location identifier may be the source eNode B identifier, source eNode B name, source eNode B IP address, etc.

[0047] Step S304, the M...

example 1

[0049] Example 1: The location identifier is the source eNode B ID

[0050] Such as Figure 4 As shown, in the case that the location identifier is the source eNode B ID, the inter-network element handover control method according to the embodiment of the present invention may include the following processing (401-409):

[0051] 401. The source eNode B makes a handover decision according to the measurement report of the UE, and decides to initiate handover between eNode Bs;

[0052] 402. The source eNode B sends a handover request message to the target eNode B, and notifies the target eNode B to prepare for handover;

[0053] 403. The target eNode B is ready for handover, returns a handover request response to the source eNode B, and confirms to the source eNode B that the handover can be performed;

[0054] 404. The source eNode B sends a handover command message to the UE, ordering the UE to start handover;

[0055] 405. After the UE handover is completed and successfully...

Embodiment 2

[0062] The inter-network element handover control method is used to control the inter-eNode B handover process in which the mobility management entity / serving gateway does not change.

[0063] Figure 5 It is a flowchart of a method for controlling handover between network elements according to an embodiment of the present invention. Such as Figure 5 As shown, the method includes:

[0064] Step S502, after the UE completes the handover from the source eNode B to the target eNode B, the target eNode B sends a path switch request message to the MME, and carries a UE location identifier in the path switch request message;

[0065] The UE location identity mentioned here may be a temporary user equipment identity (Temporary Mobile Subscriber Identity, TMSI for short) or a permanent user equipment identity (International Mobile Subscriber Identity, IMSI for short).

[0066] Step S504, the MME locates the UE according to the UE location identifier, and performs path switching up...

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Abstract

The present invention discloses a switching control method between network elements, wherein, after the UE completes the switching from a source eNode B to the target eNode B, the target eNode B transmits path switching request information to MME, and a first identification and a source eNodeB positioning identification are carried in the path switching request information. The MME positions the connection between MME and eNode B according to positioning identification, further positions the UE and updates the path switching. Or the target eNode B transmits path switching request information to MME and carries UE identification in the path switching request information. The MME positions UE according to UE identification and updates the path switching. Through the invention, the MME can be positioned to the user equipment thereby updating the path switching. The method of the invention settles the problem that the user equipment can not be positioned in the prior art.

Description

technical field [0001] The present invention relates to inter-network handover in a mobile communication system, in particular to a control method for inter-network element handover. Background technique [0002] With the sudden emergence of World Interoperability for Microwave Access (Wimax), the third-generation mobile communication system must improve its network performance and reduce network construction and operating costs. [0003] Therefore, the standardization working group of 3GPP (3rd Generation Partnership Project, 3rd Generation Partnership Project) is currently working on the research on PS Core (Packet SwitchCore, packet switching core network) and UTRAN (Universal MobileTelecommunication System Radio Access Network, global mobile communication system The evolution of the wireless access network), the subject of this research is called System Architecture Evolution (SAE for short) and the long-term evolution of the access network (Long Term Evolution, LTE for...

Claims

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Application Information

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IPC IPC(8): H04W36/12
Inventor 刘霖
Owner ZTE CORP