Method and device for obtaining value of control format indicator by using blind solution

一种盲解控制格式指示的值的方法及装置

Abstract

本发明公开了一种盲解CFI的值的方法及装置,确定第一个OFDM符号中CFI对应的4个REG的内容;对4个REG的内容进行解码,输出32个软比特信息;将32个软比特信息进行分组和叠加处理,输出3个叠加软比特信息;根据系统配置信息确定系统配置支持的CFI的值;将3个叠加软比特分别与系统配置支持的CFI的值对应的软比特比较,输出与系统配置支持的CFI的值对应软比特之间的欧式距离;确定欧式距离最小的CFI的值为盲解的CFI的值。上述方法及装置能够保证在一些无需均对CFI=1/2/3进行盲解的场景中只对系统配置支持的CFI的值进行盲解,从而降低不必要的功耗,提高盲解效率,减少盲解错误的概率。
The invention discloses a method and device for obtaining the value of a control format indicator by using blind solution. The method includes the following steps that: the content of four REGs corresponding to a control format indicator (CFI) in a first OFDM symbol is determined; the content of four REGs is decoded, and 32 pieces of soft bit information are outputted; grouping and superposition processing is performed on the 32 pieces of soft bit information, and 3 pieces of superposed bit information are outputted; the values of the CFI (control format indicator) supported by system configuration are determined according to system configuration information; the 3 superposed soft bits are respectively compared with soft bits which are supported by the system configuration and are corresponding to the values of the CFI, and the Euclidean distances between the 3 superposed soft bits and the soft bits which are supported by the system configuration and are corresponding to the values of the CFI are outputted; and the value of the CFI corresponding to a soft bit which is separated from the superposed soft bits by the minimum Euclidean distance is the value of the CFI by blind solution. With the method and device adopted, blind solution is only required to be performed on the values of the CFI which are supported by the system configuration in a scene where blind solution is not required to be performed on CFIs which are equal to 1/2/3, and therefore, unnecessary power consumption can be decreased, blind solution efficiency can be improved, and the probability of blind solution error can be reduced.

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