Patent ID: 8018879
Filing Date: 2011-09-13
Classification: H04B

Abstract:
1. A method of wireless transmission using a high-efficiency and high-performance frame structure in a broadband TDD system, comprising: dividing one sub-frame into several basic slots and several special slots; determining the number of the basic slots to determine the length of the basic slots so as to combine the basic slots into extended slots and to determine a modulation mode, a correction coding mode and a spreading coefficient used in different basic slots and extended slots so as to provide wireless transmission for services with different transmission rate and different transmission quality requirements; and using, by a transmitter in the broadband TDD system, one of the several basic slots to transmit broadcast or paging information of a cell and using, by the transmitter, the others of the several basic slots to transmit service information, wherein, part of the basic slots used to transmit service information is configured as several extended slots, wherein, each of the several extended slots is derived by combining at least two basic slots used to transmit service information; the transmitter uses the other part of the basic slots and the several extended slots to transmit services requiring different transmission rates, respectively; and when a bandwidth of the broadband TDD system is changed, the transmitter is capable of using the other part of the basic slots and the several extended slots to transmit the services in the event that appropriate modulation modes, correction coding modes and spreading coefficients are determined for the other part of the basic slots and the several extended slots respectively, wherein adjusting the spreading coefficient and the multiple of the basic slots constituting the extended slots corresponding to one modulation mode when the number of the basic slots is fixed is able to satisfy requirements of the system for different data rate transmission abilities within 100 Mbps when the system bandwidths are 5 MHz, 10 MHz and 20 MHz respectively.