Patent ID: 9277555
Filing Date: 2016-03-01
CPC Classification: H04L,H04W

Claim Text:
1. A data transmission apparatus in a communication system, comprising: a verification unit configured to verify a basic frequency band capable of being used for transmitting and receiving data packets to and from a plurality of terminals, and a multi-bandwidth mode in the basic frequency band; a generation unit configured to generate the data packets in the multi-bandwidth mode; and a transmission unit configured to transmit the data packets in the multi-bandwidth mode, wherein the multi-bandwidth mode includes a ½× bandwidth mode of the basic frequency band, a basic bandwidth mode, a 2× bandwidth mode of the basic frequency band, a 4× bandwidth mode of the basic frequency band and an 8× bandwidth mode of the basic frequency band, wherein the transmission unit is configured to transmit the data packets through subcarriers of a first half band and a second half band, using one of a cyclic repetitive transmission scheme and an in-symbol repetitive transmission scheme, wherein the cyclic repetitive transmission scheme includes transmitting first data in a first symbol transmitted in the first half band and subsequently transmitting the first data in a second symbol transmitted in the second half band, a first basic bandwidth mode includes the first half band, and a second basic bandwidth mode includes the second half band, and wherein the in-symbol repetitive transmission scheme includes transmitting second data in a third symbol transmitted in the first half band and simultaneously transmitting the second data in a fourth symbol transmitted in the second half band, and a third basic bandwidth mode includes the first and second half bands.