Description;more than 100 pages hence not pasted
Claims:
1.A communication system comprising:
a plurality of communication terminal devices; and
a base station device configuring a cell in which said base station device is capable of radio communication with said communication terminal devices,
wherein said base station device is configured to set, for each of said communication terminal devices, a radio format for signals transmitted to and received from said communication terminal device.
2.The communication system according to claim 1, wherein said radio format is set for each of said communication terminal devices on the basis of a type of use including a moving speed of said communication terminal device.
3.The communication system according to claim 1, wherein said base station device is configured to change said radio format for said communication terminal device in accordance with information about a change in an environment of a radio communication between said communication terminal device and said base station device and a change including a location of said communication terminal device.
4.The communication system according to any one of claims 1 to 3, wherein
said base station device and said communication terminal device perform said
radio communication by an orthogonal frequency division multiplexing scheme, and
the signals transmitted and received between said base station device and said communication terminal device include a plurality of said radio formats in which at least one of a length of a symbol of each of said signals and a length of a cyclic prefix in said
orthogonal frequency division multiplexing scheme differs.