Terminal control method, radio network controller and base station

Abstract

The present invention provides a terminal control method, a wireless network controller and a base station, wherein the method includes: the RNC determines that the downlink serving base station of the terminal that establishes connections with both the macro station and the micro station is a macro station, and the RNC acquires a target power control value, The target power control value can be used to ensure that the channel quality of the terminal's uplink control channel in the macro station reaches the target threshold; the RNC sends the target power control value to the micro station. The invention prevents the uplink out-of-synchronization of terminals in the heterogeneous network handover area.

Description

technical field [0001] The embodiments of the present invention relate to communication technologies, and in particular to a terminal control method, a radio network controller and a base station. Background technique [0002] In a heterogeneous network (Hetnet for short), the downlink transmission power of the macro station and the micro station are different, resulting in the downlink coverage radius of the macro station being different from that of the micro station. Usually, the downlink coverage radius of the macro station is larger than that of the micro station. The downlink coverage radius of the station; but since the uplink transmission power of the same terminal (UE) to send the uplink signal to the macro station and the micro station is the same, the uplink coverage radius of the macro station and the micro station is equal. This is the case in Hetnet The problem of unbalanced uplink and downlink coverage. [0003] Due to the unbalanced uplink and downlink cover...

AI Technical Summary

Problems solved by technology

[0002] In a heterogeneous network (Hetnet for short), the downlink transmission power of the macro station and the micro station are different, resulting in the downlink coverage radius of the macro station being different from that of the micro station. Usually, the downlink coverage radius of the macro station is larger than that of the micro station. The downlink coverage radius of the station; but since the uplink transmission power of the same terminal (UE) to send the uplink signal to the macro station and the micro station is the same, the uplink coverage radius of the macro station and the micro station is equal. This is the case in Hetnet The problem of unbalanced uplink and downlink coverage

[0003] Due to the unbalanced uplink and downlink coverage, UEs in the Hetnet handover area are prone to the following problems: the power of the UE in the handover area is controlled by the micro-station with better uplink signal quality, and the micro-station will check the received UE uplink signal quality. When it is higher than the threshold, the UE is instructed to reduce the uplink transmission power; while the serving base station of the UE is determined by the quality of the downlink signal. For the UE with better downlink signal quality of the macro station in the handover area, the serving base station is the macro station; The uplink signal of the station is inherently poor, that is, the quality of the UE's uplink signal to the macro station is lower than the quality of the uplink signal to the micro station, and the micro station instructs the UE to reduce the uplink transmit power, which may cause the UE to lose synchronization in the uplink of the macro station , that is, the communication connection with the macro station may be disconnected

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