Security key context distribution method, mobility management entity and base station

Abstract

The invention discloses a security key contextual distribution method, mobility management entity and base station, wherein, the security key contextual distribution method comprises: firstly, the mobility management entity receives a first instruction from a main base station, wherein the first instruction is used for the mobile management entity to request a path switching and indicate the path switching triggered by a inter-base station carrier aggregation; the path switching is processed according to the first instruction; the security keys context distribution method for the path switching is remained unchanged according to the first instruction, secondly, a second instruction is sent to the main base station, the security keys context distribution method is remained unchanged by indicating the main base station; or, the third instruction is sent to the main base station, a turning times of a counter of a next-hop chain of the security keys context distribution method is obtained by indicating the main base station. To be sure, the technical solution provided by the present invention can effectively improve the reliability of the path switching when the inter-base station carrier is aggregating.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a security key context distribution method, a mobility management entity and a base station. Background technique [0002] Carrier aggregation in a Long Term Evolution (LTE, Long Term Evolution) system can be roughly divided into carrier aggregation inside a base station, carrier aggregation between base stations, and the like. The cell aggregation inside the base station is relatively simple because it is only controlled by one base station. The Release-10 version of the 3rd Generation Partnership Project (3GPP, 3rd Generation Partnership Project) supports carrier aggregation inside a base station, but carrier aggregation between base stations does not yet support it. Carrier aggregation between base stations can be divided into carrier aggregation between macro base stations and carrier aggregation between macro base stations and micro base stations. Carrier aggregation...

AI Technical Summary

Problems solved by technology

The Release-10 version of the 3rd Generation Partnership Project (3GPP, 3rd Generation Partnership Project) supports carrier aggregation within the base station, but carrier aggregation between base stations does not yet support

[0004] However, carrier aggregation between base stations is different from X2 handover, because the secondary eNB may be a micro base station, and in carrier aggregation between base stations, each bearer handover requires a path switching process, so the probability of path switching is much greater than that of X2 handover , frequent path switching is likely to cause network security out of synchronization, causing UE to drop calls

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