Wireless link failure statistical method, relevant device and communication system

Abstract

Embodiments of the present invention disclose a radio link failure statistics method, a related apparatus, and a communications system, which are used to distinguish between CIO configuration reasons causing a radio link failure, so as to collect statistics on an exceptional handover in a classifying manner for use as an input to different optimization algorithms, thereby ensuring correctness of an optimization result. A method of the embodiments of the present invention mainly includes: sending, by a source base station, identifier information to a user equipment, where the identifier information carries an identifier of a CIO configuration reason, and receiving, by the source base station, a first radio link failure indication sent by a first target base station, where the first radio link failure indication is sent by the first target base station to the source base station after the first target base station receives a Radio Resource Control protocol RRC reestablishment request message sent by the user equipment, and the RRC reestablishment request message carries the identifier of the CIO configuration reason.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a wireless link failure statistics method, a related device and a communication system. Background technique [0002] The handover in the Long Term Evolution (LTE, Long Term Evolution) system is based on event triggering, such as A3 and A4 events. Ocn in A3 and A4 events is the cell individual offset (CIO, Cell Individual Offset). By adding Increasing or decreasing the value of CIO can make it easier or harder to trigger related handover events, so that handover is relatively easier or harder to occur. The R9 and R10 protocols of the 3rd Generation Partnership Project (3GPP, The 3rd Generation Partnership Project) define three abnormal handovers caused by improper CIO settings: handover too late, handover too early, and handover to the wrong cell. If the modification is unreasonable, if the switch is too easy to trigger, the switch will be too early, and i...

AI Technical Summary

Problems solved by technology

The R9 and R10 protocols of the 3rd Generation Partnership Project (3GPP, The 3rd Generation Partnership Project) define three abnormal handovers caused by improper CIO settings: handover too late, handover too early, and handover to the wrong cell. If the modification is unreasonable, if the switch is too easy to trigger, the switch will be too early, and if the switch is too difficult to trigger, the switch will be too late

[0006] Both MRO optimization and MLB optimization may modify the CIO, and modifying the CIO may result in premature or late switching, resulting in wireless link failure, switching failure, or call drop.

However, in the prior art, the statistical process of wireless link failure related events can only count the number of wireless link failures, so as to adjust the CIO when the subsequent adjustment and optimization period arrives, so that the optimization result may be wrong.

Images