Patent ID: 8537729

Claim:
A method for sending an SRS of uplink channel in a TDD system, a terminal calculating parameters of resources for sending an SRS in a UpPTS according to configuration information related to the SRS of the uplink channel, the parameters including a frequency domain starting position of the resource, and then the SRS being sent over the resource; wherein it being necessary to determine an index of a first sub-carrier in a maximum SRS-Bandwidth when the frequency domain starting position of the resource is calculated; the terminal determining the index according to the frequency domain position of one PRACH or that of more PRACHs in the UpPTS, when the PRACH includes a sub-carrier at a lower boundary of a system bandwidth, the upper boundary of the system bandwidth being used as the end position of the maximum SRS-Bandwidth, thereby the starting position of the maximum SRS-Bandwidth being calculated; and when the PRACH includes a sub-carrier at an upper boundary of the system bandwidth, the lower boundary of the system bandwidth being used as the starting position of the maximum SRS-Bandwidth, and then the index being determined through the starting position of the maximum SRS-Bandwidth plus an offset parameter configured for the terminal.