Patent ID: 8767648
Filing Date: 2014-07-01
Classification: H04L,H04W

Abstract:
1. A method for transmitting a Sounding Reference Signal, SRS, comprising: allocating, in at least two cells for which uplink channels are to be sounded by a User Equipment, UE, an SRS resource for sounding each of the cells to the UE; and instructing the UE to transmit an SRS over the allocated SRS resource, wherein allocating the SRS resource for sounding each of the cells to the UE comprises any one or combination of the following approaches: a) allocating an SRS resource to the UE in a way that base stations of the cells allocate the same SRS resource to the UE; b) allocating to the UE SRS resources, each of which is an SRS resource determined for each of the cells for allocation to the UE; and c) allocating to the UE an SRS resource, of which resource information is shared by the base stations of all of the cells, wherein: when the approach a) is used, the method further comprises: performing coordinated scheduling with the base stations of the cells for which uplink channels are to be sounded by the UE so that the SRS resources allocated to the UE by the base stations of all of the cells are the same; or when the approach b) is used, the method further comprises: acquiring, from an base station of each of the cells for which uplink channels are to be sounded by the UE, an SRS resource determined for the UE by the base station; or when the approach c) is used, the method further comprises: sharing information of the SRS resource allocated to the UE with the base stations of the cells for which uplink channels are to be sounded by the UE.