Power control method of high speed sharing control signal channel

Abstract

The invention discloses a high-speed share control channel power controlling method, and relates to a channel power controlling method in a mobile communication system, the method aims to reduce the interference among channels and save the transmitting power of the Node B. The invention includes the steps that: (1) the power offset values of the high-speed share control channels Part1 and Part2 are respectively selected; (2) the reference powers corresponding to the high-speed share control channels Part1 and Part2 are determined; (3) the power offset values of the high-speed share control channels Part1 and Part2 and the reference powers corresponding to the Part1 and the Part2 are respectively added up, so as to get the transmitting powers of the high-speed share control channels Part1 and Part2. The invention can improve the detection performance of an HS-SCCH signal, and can reduce the mutual interferences among the channels and save the transmitting power of the Node B on the premise of ensuring the receiving performance.

Description

technical field [0001] The invention relates to a channel power control method in a mobile communication system, in particular to a power control method for a high-speed shared control channel (HS-SCCH) in a WCDMA (wideband code division multiple access) communication system. Background technique [0002] In the third-generation mobile communication system, High Speed ​​Downlink Packet Access (HSDPA, High Speed ​​Downlink Packet Access) is a data transmission method based on technologies such as scheduling, adaptive modulation and coding, and hybrid automatic repeat request, aiming to obtain High data transmission throughput, peak rate and small delay. In HSDPA transmission, the data transmitted by the base station to multiple users can be multiplexed to the same common high-speed downlink shared data channel (HS-DSCH, High Speed ​​Downlink Share Channel) in a time-division or code-division manner. On the HS-DSCH, the network determines the allocation of radio resources bet...

AI Technical Summary

Problems solved by technology

[0008] (1) If the transmission power of the HS-SCCH channel determined according to the set PO is large, although the detection probability of Part1 can be improved, the interference between channels is increased;

[0009] (2) If the transmission power of the HS-SCCH channel determined according to the set PO is small, it is more suitable for the reception of Part2, which can reduce the mutual interference between channels , but it also reduces the detection probability of Part1

[0011] (1) Due to the use of two reference channels, the implementation complexity is relatively high;

[0012] (2) Although the HS-SCCH channel is a shared channel, a single HS-SCCH channel is specific to a certain UE (user equipment) within a certain period of time Therefore, the power control method of the conventional shared channel cannot be copied, that is, the power offset relative to the CPICH channel is used to determine its transmit power

In this way, due to the same high transmit power of different HS-SCCH channels, channel interference may increase, and at the same time, excessively high transmit power also wastes power resources of Node B

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