Patent ID: 8509172

Claim:
A method for transmitting an uplink channel sounding reference signal (SRS), including: receiving, by a User Equipment (UE), SRS configuration parameters from a base station, wherein the SRS configuration parameters include an SRS bandwidth parameter B SRS and an SRS frequency domain position parameter n RRC , wherein RRC refers to Radio Resource Control; calculating, by the UE, the frequency domain starting position of the SRS of the resource used for sending the SRS according to the SRS configuration parameters after receiving the SRS configuration parameters, and then sending the SRS to the base station using the resource; wherein the frequency domain resource assigned to the SRS by the base station corresponds to a node in a tree structure of an SRS bandwidth configuration, and the configured B SRS corresponds to the level on which the node is located, while the configured n RRC corresponds to the index of the branch node on the lowest level of the node in the tree structure; wherein the calculation of the frequency domain starting position of the SRS of the resource used for sending the SRS according to the SRS configuration parameters is specifically as follows: calculating index n b according to the following formula, wherein the index n b is the index of a branch node located on the b th level of a node on the (b−1) th level; and then the frequency domain starting position of the SRS is calculated according to the n b : n b =└4 n RRC /m SRS,b ┘ mod N b ; wherein └*┘ represents rounding down, m SRS,b represents the number of resource blocks contained in every node on the b th level of the tree structure in the frequency domain, and b=0, 1, . . . , B SRS ; and wherein N b is the number of branch nodes located on the b th level of a node on the (b−1) th level of the tree structure, and when b=0, then N b =1.