Switching method, access node and host site

Abstract

A handover method, an access node and a donor station are provided by the embodiments of the present invention. The handover method includes: the access node requests the donor station of the access node for the information of the Mobility Management Entity Pool (MME Pool) which the MME attached to by the user equipment under the coverage of the access node belongs to (101); the access node receives the information of the MME Pool which the MME attached to by the user equipment under the coverage of the access node belongs to, from the donor station (102); the access node implements the user equipment handover according to the information of the MME Pool (103). The embodiments of the present invention enable the access node to acquire the information of the MME Pool which the MME attached to by the user equipment belongs to, which is needed when the handover type judgment is implemented, improve the correctness of the handover type judgment, and ensure the smooth implementation of the handover.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a handover method, an access node and a host site. Background technique [0002] In the Long Term Evolution (hereinafter referred to as: LTE) system, handover is divided into two handover types based on different handover reference points: handover based on X2 interface, hereinafter referred to as: X2 handover; and handover based on S1 interface, as follows Abbreviation: S1 switching. [0003] X2 handover takes the X2 interface between the source evolved base station (Evolution Node B; hereinafter referred to as: eNB) and the target eNB as the reference point. The entity (Mobility Management Equipment; hereinafter referred to as: MME) will not change, that is, the X2 handover is based on the existence of an S1 interface between the source eNB and the MME to which the UE is attached, and the existence of an S1 interface between the MME to which the UE is attached a...

AI Technical Summary

Problems solved by technology

At this time, the DeNB will select the MME for the UE, but the RN cannot know which MME the DeNB finally selects.

[0009] 2) Even if the DeNB can obtain the historical MME information attached by the UE through the registeredMME information carried in the RRC connection setup complete message, but since the MME to which the UE is finally attached is selected by the DeNB, the RN cannot be sure which MME the DeNB finally selects.

[0010] In short, in the relay network, since the MME of the terminal is selected by the DeNB, the RN cannot obtain the information of the MME attached to the terminal. At this time, the handover using the X2 interface may fail.

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