Research on LTE Handover Mechanism Based on Multi-factor Decision

Abstract

The invention discloses a long-term evolution (LTE) cell switching method based on a multi-factor decision. From cell signal level measurement and cell resource analysis, influences of a user terminal rate change and a service quality competiveness index (QCI) level are considered, and a brand-new cell switching rule is provided. By the LTE cell switching method based on the multi-factor decision, a signal level value and the resource availability of a target cell as well as a migration rate of users and the priority level of developed services are comprehensively considered; proper weights can be selected, so that cells with the minimum loads or the best signal level values are selected to be switched, so that the service continuity is guaranteed; and therefore, the customer satisfaction is improved to the maximum extent, and the aim of balancing a network is fulfilled.

Description

technical field [0001] The invention relates to a method for LTE cell switching, in particular to a cell switching method based on comprehensive consideration of multiple factors such as cell signal level, resource load, user moving speed and service level. Background technique [0002] LTE can significantly reduce the delay of user plane and control plane by adopting various key technologies such as OFDM, SC-FDMA and MIMO. Its main goal is to provide seamless voice and multimedia access services under the delay requirement. The realization of this goal requires handover support from the serving cell to the target cell. Since there is no macro-diversity between eNBs, there is only hard handover in LTE. At the same time, it must be ensured that user perception will not be affected by the handover mechanism, thus putting forward higher requirements for handover algorithms. [0003] Different from the 3G system handover, in link monitoring and measurement, layer 1 and layer 3 ...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem of handover of differentiated services in the LTE network, and can effectively avoid the problems of unstable signal quality and unbalanced load caused by cell handover in the network

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