With the continuous progress of information technology, distance English teaching is becoming a practical choice. The introduction of 5G technology has improved the English classroom experience and provided innovation for modern teaching. With the help of wireless communication technology, teachers can effectively impart cognitive skills. Compared with traditional English teaching methods, it obviously enhances the two-way communication between students and professors. Teaching students in accordance with their aptitude uses the reformed Best Available Technology Optimization Algorithm (RBOA) to optimize the transmission process and evaluate students' cognitive ability. This study shows that the proposed method seems to be more effective than the traditional college English course and can significantly improve students' language ability. This optimization scheme has a potential wide application prospect in teaching practice, which has injected new vitality and possibility into English education.