LTE的RRC层协议中写到：The SystemInformationBlockType1 uses a fixed schedule with a periodicity of 80 ms and repetitions made within 80 ms. The first transmission of SystemInformationBlockType1 is scheduled in subframe #5 of radio frames for which the SFN mod 8 = 0, and repetitions are scheduled in subframe #5 of all other radio frames for which SFN（系统帧号） mod 2 = 0。不懂为什么前面是SFN mod8=0,后面变成了SFN mod2=0了呢？