Uplink external ring power control method in high speed uplink link group access application
A high-speed uplink, outer-loop power control technology, applied in the field of WCDMA systems, can solve the problems of adjusting the transmit power, unable to effectively track the change of channel conditions, etc., to achieve the effect of utilizing power resources and improving cell capacity
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[0028] Due to the characteristics of the service itself, for some I / B services, the real-time performance is not too strong, so the retransmission mechanism can be fully utilized to reduce the transmission power and save wireless resources. Therefore, NHR is used for outer loop power control for such services basis is more reasonable. For services sensitive to delay such as VOIP or S, there may be no retransmission opportunities or very few opportunities. Therefore, for such services, it is more reasonable to use HARQ failure indication to guide outer loop power control.
[0029] In order to enable RNC to dynamically adjust the uplink SIRTarget (signal-to-interference ratio target value) according to the change of E-DCH channel quality, 25.427 of the 3GPP protocol defines the process of NODEB sending HARQ failure indication and bringing back the number of retransmissions in the uplink data frame. The serving Node B sends a HARQ failure indication to the RNC in the following si...
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