Method and apparatus for selecting modulation and coding scheme

摘要

The disclosure provides a method and an apparatus for selecting a modulation and coding scheme (MCS). According to the interference plus noise power of a measuring sub-frame, a receiver adjusts the range of an average Carrier to Interference Plus Noise Ratio (CINR) in a reference MCS parameter; according to the average interference plus noise power of the measuring sub-frame in a predetermined period, the receiver calculates and obtains the average CINR in the predetermined period; based on the calculated and obtained average CINR in the predetermined period, the receiver determines MCS information by comparing the adjusted range of the average CINR. Thus the influence of the channel condition changes on the dynamic MCS selection is eliminated.

主权项

1. A method for selecting a Modulation and Coding Scheme (MCS), comprising:
adjusting a range of an average Carrier to Interference Plus Noise Ratio (CINR) in a reference MCS parameter by a receiver according to interference plus noise power of a measuring sub-frame; calculating and obtaining an average CINR in a predetermined period by the receiver according to average interference plus noise power of the measuring sub-frame in the predetermined period; and determining MCS information by the receiver by comparing the adjusted range of the average CINR based on the calculated and obtained average CINR in the predetermined period; wherein the step of adjusting a range of an average Carrier to Interference Plus Noise Ratio (CINR) in a reference MCS parameter by a receiver according to interference plus noise power of a measuring sub-frame comprises: obtaining the interference plus noise power p(n) of the measuring sub-frame by the receiver; calculating and obtaining an average value P(n) and variance V(n) of the interference plus noise power p(n) of the measuring sub-frame in the predetermined period by the receiver; calculating and obtaining an pre-estimated adjustment amount of the range of the average CINR in the reference MCS parameter by the receiver according to the average value P(n) and the variance V(n); and adjusting the range of the average CINR in the reference MCS parameter by the receiver according to the pre-estimated adjustment amount.