Signal detection method of the channel in the E-DCH

Abstract

The invention relates to a mobile communication field, discloses a signal detection method of a channel in an E-DCH, capable of improving reliability and accuracy of ACK/NACK and comparative authorization detection. In the invention, a RNC provides an E-HICH/E-RGCH channel to an UE comparatively to a downlink DPCCH power offset, the UE detects the ACK/NACK and a comparative authorization signal according to the power offset. SIR of the E-HICH/E-RGCH is obtained by the power offset and the SIR of DPCCH already estimated according to a known pilot. Then detection thresholds for ACK/NACK and/or the comparative authorization signal is determined based on the SIR of the E-HICH and/or the E-RGCH, and soft-decision values of the ACK/NACK and/or the comparative authorization signal are weighted and combinated by the SIR of the E-HICH and/or the E-RGCH.

Description

technical field [0001] The present invention relates to the field of mobile communication, in particular to a signal detection technology in an Enhanced Dedicated Channel ("E-DCH" for short). Background technique [0002] The Universal Mobile Telecommunications System ("UMTS" for short) is one of the three major third generation mobile communication (The Third Generation, "3G" for short) systems in the world. As shown in Figure 1, the UMTS system consists of three parts, namely the core network (Core Network, referred to as "CN"), Universal Mobile Telecommunications System Terrestrial Radio Access Network (UMTS Terrestrial Radio Access Network, referred to as "UTRAN") and user equipment ( UserEquipment, referred to as "UE"). The interface between CN and UTRAN is defined as Iu interface, and the interface between UTRAN and UE is defined as Uu interface. [0003] As shown in FIG. 2 , the UTRAN also includes many radio network subsystems (Radio Network Subsystem, “RNS” for sh...

AI Technical Summary

Problems solved by technology

[0024] In practical applications, the above scheme has the following problems: the RNC does not provide the power offset parameters of the E-HICH and E-RGCH channels to the UE, so the UE cannot improve the E-HICH and E-RGCH channel parameters according to the power offset parameters of these two channels. Detection performance of ACK / NACK and relative grant information on E-RGCH channel

[0025] The main reason for this situation is that although the existing technology allows NBAP / RNSAP to configure the power offsets of the corresponding E-AGCH, E-HICH and E-RGCH channels relative to the downlink DPCCH pilot bits for the RI of each E-DCH However, since the parameters of the E-HICH and E-RGCH channels are given by "E-HICH Info" and "E-RGCH Info" in the prior art Radio Resource Control (RadioResource Control, "RRC") protocol Its structure is shown in Table 5 and Table 6, and "E-HICH Info" and "E-RGCH Info" do not include the power offset information of E-HICH and E-RGCH channels

Therefore, the power offset parameters of E-HICH and E-RGCH channels cannot be provided to UE through RRC messages

Therefore, the UE cannot improve the detection performance of ACK / NACK and relative grants on the corresponding E-HICH and E-RGCH channels according to the offset parameters, which is not conducive to the improvement of system performance

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