上下行链路压缩模式介绍.ppt

* TGL is the number of consecutive idle slots during the compressed mode transmission gap: TGL = 3, 4, 5, 7, 10, 14 Nfirst specifies the starting slot of the consecutive idle slots, Nfirst = 0,1,2,3,…,14. Nlast shows the number of the final idle slot and is calculated as follows; If Nfirst + TGL ? 15, then Nlast = Nfirst + TGL –1 ( in the same frame ), If Nfirst + TGL 15, then Nlast = (Nfirst + TGL – 1) mod 15 ( in the next frame ). * 下行有两种帧类型，由高层配置，帧类型与时隙格式的Type A或Type B无关。 Type A: 最大化TGL，TG最后一个时隙的Pilot域要发射，TG的其它部分发射机关闭。 Type B: 优化功率控制，TG第一个时隙的TPC域和最后一个时隙的Pilot域要发射，TG的其它部分发射机关闭。 * 固定位置打孔。 * 上行DPCCH的时隙格式压缩模式时有A,B两种类型， 具体由压缩帧的包含的GAP长度来确定。 GAP长度为1slot~5slots时，时隙格式为A； GAP长度为6slots~7slots时，时隙格式为B。 上行DPDCH的时隙格式压缩模式时 直接由SF确定。 * * where ?SIR1_coding and ?SIR2_coding are computed from uplink parameters DeltaSIR1, DeltaSIR2, DeltaSIRafter1, DeltaSIRafter2 signalled by higher layers as: - ?SIR1_coding = DeltaSIR1 if the start of the first transmission gap in the transmission gap pattern is within the current uplink frame. - ?SIR1_coding = DeltaSIRafter1 if the current uplink frame just follows a frame containing the start of the first transmission gap in the transmission gap pattern. - ?SIR2_coding = DeltaSIR2 if the start of the second transmission gap in the transmission gap pattern is within the current uplink frame. - ?SIR2_coding = DeltaSIRafter2 if the current uplink frame just follows a frame containing the start of the second transmission gap in the transmission gap pattern. - ?SIR1_coding = 0 dB and ?SIR2_coding = 0 dB in all other cases. * GAP之后的RPL期间DSTEP = DRP-TPC ，其他情况DSTEP = DTPC 。 DRP-TPC is called the recovery power control step size and is expressed in dB. DRP-TPC = min(2DTPC,3) * where ?P1_coding and ?P2_coding are computed from uplink parameters DeltaSIR1, DeltaSIR2, DeltaSIRafter1, DeltaSIRafter2 signaled by higher layers as: - ?P1_coding = DeltaSIR1 if the start of the first transmission gap in the transmission gap pattern is within the current fra