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Method for transferring mobile management entity/user interface entity

A technology of mobility management entity and user plane entity, applied in the field of evolution network, can solve problems such as communication interruption, and achieve the effect of ensuring uninterrupted communication, avoiding overload phenomenon, and realizing access control.

Inactive Publication Date: 2007-09-19
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0022] The present invention provides an MME / UPE migration method, which is used to solve the problem in the prior art that communication interruption cannot be caused by load balancing based on the current state of MME / UPE

Method used

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  • Method for transferring mobile management entity/user interface entity
  • Method for transferring mobile management entity/user interface entity
  • Method for transferring mobile management entity/user interface entity

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0103] Referring to FIG. 11 , it is a schematic diagram of the migration process in which the MME / UPE is migrated and the serving LTE-RAN Entity does not change.

[0104] In Figure 11, user equipment UE1 moves from MME / UPE service area 1 to MME / UPE service area 2. When UE moves to LTE-RAN Entity 5 in service area 2, its serving MME / UPE is still the MME / UPE before moving. UPE1; if at this time due to O&M reasons or MME / UPE1 is heavily loaded or the link from MME / UPE1 to LTE-RAN Entity5 is congested or other reasons (determined by the radio resource management (RRM) strategy), according to the above method of the present invention , the service MME / UPE of UE1 will be migrated from MME / UPE1 to MME / UPE2 or MME / UPE3 or MME / UPE4; which one to choose as the target MME / UPE after migration can be determined according to the location and load of the UE . For example, according to the location of the UE, MME / UPE3 or MME / UPE4 may be preferred, because both MME / UPEs are located in the ser...

Embodiment 2

[0106] Referring to FIG. 12 , it is a schematic diagram of the migration process for MME / UPE migration and the serving LTE-RAN Entity changes at the same time.

[0107] In Figure 12, the UE is still connected to MME / UPE1 after moving to LTE-RAN Entity4, but triggers a handover when it moves to LTE-RAN Entity5, and the UE switches to LTE-RAN Entity5. At the same time, depending on the load and other reasons , the serving MME / UPE is migrated from the source MME / UPE1 to MME / UPE2, 3, and 4. Figure 12 shows the situation where the serving MME / UPE is migrated to MME / UPE3, and the communication link of the UE before and after migration , as shown by the thick solid line in Figure 12.

Embodiment 3

[0109] In the same service area, MME / UPE is shared by resource pool. Generally speaking, when UE moves to other MME / UPE range under the same resource pool, it will not initiate MME / UPE migration, which can save signaling and reduce service interruption. . But in some special cases, it is also necessary to migrate the service MME / UPE in the same resource pool. For example: special cases are:

[0110] 1. When the system needs to be operated and maintained, for example, the system is being upgraded or overhauled, the current service MME / UPE cannot be used for a period of time.

[0111] 2. The current service MME / UPE is overloaded. For example, most of the users under the jurisdiction of the MME / UPE turn from idle state to active state in a short period of time, making the load of the MME / UPE exceed the load it can bear.

[0112] 3. The link between the serving MME / UPE and the LTE-RAN Entity is congested or disconnected.

[0113] When a special situation occurs, the target MME / ...

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Abstract

The present invention discloses a MME / UPE transfer method, applied to evolution networks, including: judging whether the current status of the source MME / UPE providing services for the UE before the transfer, satisfies the preset transfer conditions or not; selecting an object MME / UPE after the transfer when the transfer conditions are satisfied; establishing connections between the object MME / UPE and the current owned LTE-RAN entities of the transfered UE; executing the migration processes from the source MME / UPE to the object MME / UPE; establishing the connection in the order of the transfered UE, the said LTE-RAN entities, the said object MME / UPE and the IAS anchor points; releasing the connection between the source MME / UPE and the source services LTE-RAN entities of the UE before the transfer. Application of the present invention, can execute the services MME / UPE transfer to the presidial UE, because a MME / UPE load is heavier or the link has failures or other reasons, thus achieving the load balance of every MME / UPE to ensure the uninterrupted communications.

Description

technical field [0001] The present invention relates to an evolved network, in particular to a migration method of a Mobility Management Entity (MME) / User Plane Entity (UPE) in an evolved network. Background technique [0002] The Universal Mobile Telecommunications System (UMTS) is a third-generation mobile communication system using the WCDMA air interface technology, and the UMTS system is usually also called a WCDMA communication system. The UMTS system adopts a structure similar to that of the second generation mobile communication system, including a radio access network (Radio Access Network, RAN) and a core network (CoreNetwork, CN). Among them, the wireless access network is used to handle all wireless-related functions, while the CN handles all voice calls and data connections in the UMTS system, and realizes switching and routing functions with external networks. The CN is logically divided into a circuit switched domain (Circuit Switched Domain, CS) and a packet...

Claims

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Application Information

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IPC IPC(8): H04Q7/38H04W36/12
CPCH04W36/12
Inventor 郭小龙
Owner HUAWEI TECH CO LTD
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