Power control method and corresponding device

Abstract

According to an exemplary embodiment of the present invention, the wireless access point device used in the coordinated multi-point system of the heterogeneous network obtains all path losses of all cooperative micro wireless access points in the cooperation set of the user equipment; obtains all path losses from the user equipment to the macro The actual path loss of the wireless access point; according to the obtained path losses, calculate the virtual path loss from the virtual user equipment corresponding to the user equipment to the macro wireless access point; notify the user equipment that it is related to the calculated virtual path loss Information. In a coordinated multi-point system for a heterogeneous network, user equipment receives information related to virtual path loss from a wireless access point as a scheduling network element; according to information related to virtual path loss, the macro wireless access point is used The uplink open loop power control parameter performs power control.

Description

technical field [0001] The present application generally relates to wireless communication technology, and particularly relates to a power control method and corresponding device. Background technique [0002] As already defined in 3GPP TS36.213, the uplink (UL) power control of LTE is formed by a combination of an open-loop mechanism and a closed-loop mechanism. Among them, the open-loop mechanism means that the transmit power of the user equipment (UE) depends on the estimation of the downlink (DL) path loss, and the closed-loop mechanism means that the network can additionally directly control the DL through explicit power control commands. UE transmit power. Open-loop power control (OLPC) is mainly responsible for the rough adjustment of UE transmit power, which mainly compensates the slow change of path loss, so as to obtain a certain average received signal power for all users. The closed-loop power control (CLPC) is mainly used for the adjustment of user-specific po...

AI Technical Summary

Problems solved by technology

In this scheme, the minimum P of the CoMP set 0 selected as the final base grade and use P 0 to optimize the open-loop power setting, but this scheme does not reconsider the path loss compensation factor α and path loss

Moreover, the above schemes are not optimized for all different CoMP processes and all different cooperation regions

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