Method, base station, mobile station and system for adjusting outer loop power control

Abstract

The present invention provides a method for adjusting UE outer loop power control, including: Step 1. When there is no data transmission on the downlink 3.4K signaling channel, the radio network controller regularly constructs a data packet at the media access control layer and sends it to NodeB ; Step 2, NodeB forwards the data packet to UE after processing; Step 3, UE performs data processing after receiving the data packet, and sends the processing result to NodeB; Step 4, NodeB performs power control according to the processing result of UE. The invention also provides a base station, a mobile station and a system for adjusting the outer loop power control. By adopting the method, base station, mobile station and system of the present invention, when there is no data transmission on the downlink 3.4K signaling channel, the outer loop power control of the UE can be adjusted by regularly constructing data packets, and then the NodeB downlink dedicated transmission code can be adjusted power, improve downlink quality and throughput of HSDPA services.

Description

technical field [0001] The invention relates to the field of mobile communication, in particular to a method for adjusting the outer loop power control of a mobile station during the WCDMA power control process, a base station, a mobile station and a system. Background technique [0002] In a wideband code division multiple access (WCDMA) system, because code division multiple access is used, and codewords are not completely orthogonal, multiple access interference exists. In addition to the direct impact of multiple access interference itself, in the uplink, there is a "near-far effect". In the downlink, however, there are "edge effects". In addition, due to the blockage of large buildings in the propagation of radio waves, a "shadow" effect is formed and slow fading occurs. These phenomena will lead to a decrease in system capacity and a reduction in the scope of actual communication services. Therefore, power control is one of the most effective ways to solve these pro...

AI Technical Summary

Problems solved by technology

[0006] In actual field applications, when there is data to be sent on the downlink transmission channel, the UE can well adjust the UE's SIRtarget and downlink transmit code power (TCP, Transmitted codepower) according to the outer loop power control and inner loop power control, but the downlink transmission channel When there is no data to send, or when the amount of data is very small, it cannot meet the UE outer loop adjustment requirements

For example, for HSDPA (High Speed ​​Downlink Packet Access, high-speed downlink packet access) service, the downlink is accompanied by 3.4K signaling channel. If the UE is basically stationary in a certain place and only does some downloading or web browsing services, the downlink is accompanied by 3.4K signaling. The amount of channel data is very small, and occasionally only the acknowledgment (ACK) packet for the Measurement Report (MeasureReport) message sent by the UE is sent. If the SIRtarget of the UE is adjusted upward due to a downlink demodulation error, then even if the downlink channel quality becomes better afterwards , but because there is no 3.4K signaling data to be sent in the downlink, the SIRtarget of the UE has been maintained at a high value and cannot be adjusted downward. Reduced to a reasonable value, affecting downlink quality and throughput of HSDPA services

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