Patent ID: 9380579
Filing Date: 2016-06-28
CPC Classification: H04L,H04W

Claim Text:
1. A radio signal transmission method, comprising: transmitting a plurality of radio signals having different sub frame lengths on a radio carrier, arranging a plurality of short sub frames inside the radio carrier, each of the plurality of short sub frames having lengths in time domain equal to each other and widths in frequency domain equal to each other, each of the short sub frames comprising a control region appended in time domain with a data region corresponding to a plurality of user terminals, the control region and the data region being of equal widths in frequency domain; arranging, by a multiplexer, of a long sub frame to be only outside a frequency band width of the short sub frame and within the frequency band width of the radio carrier, the long sub frame having a length equal to a multiple of the length of a short sub frame and is aligned in time with a sequence of the continuous short sub frames such that the start of the first short sub frame of the sequence is aligned in time with the start of the long sub frame and the end of the last short sub frame of the sequence is aligned in time with the end of the long sub frame; transmitting, in the control region of each short sub frame, information indicating the frequency band width of corresponding each of the short sub frame, to a terminal capable of receiving only the short sub frames as control information of the short sub frames arranged throughout the frequency band width of the short sub frames; and transmitting the information indicating related to the frequency band width of the short sub frames and information indicating the frequency band width of the radio carrier, to a terminal capable of receiving both the short sub frame and the long sub frame as control information, arranged throughout the frequency band width of the radio carrier and overlapping the control region of the first short frame of the sequence, of the long sub frame.