Method and device for long term evolution (LTE) change-over judgment based on timing advance (TA)

Abstract

The invention provides a method and a device for long term evolution (LTE) change-over judgment based on timing advance (TA). TA value reported by a user equipment (UE) terminal is compared with protocol standard value, and increment operation is conducted on different obtained states so as to obtain mobile trend of the UE terminal through calculation and conduct calculation of total TA report times. The total TA times reported by the UE terminal are compared with preset threshold times and judged, whether reliability of the TA value reported by UE is compensated is determined according to a judgment result so as to enhance calculation accuracy of mobile trend of the UE terminal. When eNB conducts change-over processing on corresponding UE, change-over judgment processing is conducted according to the mobile trend of the UE, the mobile trend of the UE is obtained through calculation, accuracy of change-over judgment is enhanced, and change-over processing performance of the eNB is improved.

Description

technical field [0001] The present invention relates to the field of communication technologies, and in particular to a method and device for handover decision of an LTE access network based on a TA value reported by a UE terminal. Background technique [0002] The LTE (Long Term Evolution, long-term evolution) project is an evolution of 3G, which started at the 3GPP meeting in Toronto in 2004. LTE is not the 4G technology that people generally misunderstand, but a transition between 3G and 4G technology. It is the global standard of 3.9G. It improves and enhances the air access technology of 3G. The only standard. Under the 20MHz spectrum bandwidth, it can provide the peak rate of downlink 326Mbit / s and uplink 86Mbit / s. It improves the performance of cell edge users, increases cell capacity and reduces system delay. In an LTE network, user terminals are called UE terminals, including mobile phones, smart terminals, multimedia devices, streaming media devices, and so on. ...

AI Technical Summary

Problems solved by technology

[0008] The current handover judgment method based on signal strength and quality implemented by the above-mentioned system has the disadvantage of not considering the relative position of the UE and the source cell and the mobile trend of the UE terminal. Due to the complexity of the wireless communication propagation environment, it will lead to the following problems:

[0009] For example, when the UE terminal is relatively close to the source cell, the signal strength and quality of the source cell are lower than the set threshold due to wireless propagation, while the signal strength and quality of the target cell are higher than the set threshold. Judging handover, but after the UE terminal leaves the current environment, the measured signal conditions will become normal, which will cause another handover execution; or, when the signal strength of the source cell and If the quality is lower than the set threshold, but the signal strength and quality of the target cell are higher than the set threshold, the handover decision is made at this time. Since the mobile trend of the UE is not considered, if the mobile trend of the UE is close to the direction of the source cell or relatively When the position does not change, it will cause inaccurate judgment or frequent switching

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