Patent ID: 8897164
Filing Date: 2014-11-25
Classification: H04L,H04W

Abstract:
1. A data transmission method, comprising: determining, by a base station, to perform semi-persistent scheduling on data of a user equipments; setting, by the base station, a value of first information for thea user equipment, the value of the first information utilizable by the user equipment to determine a cyclic shift value of a reference signal sequence of the user equipment, wherein the first information is determined by a three-bit cyclic shift indicator field of a demodulation reference signal on a physical downlink control channel (PDCCH), and the setting, by the base station, of the value of the first information for the user equipment comprises setting one bit or two bits of the three-bit cyclic shift indicator field to a fixed value; and obtaining, by the base station, the reference signal sequence of the user equipment, performing channel estimation according to the reference signal sequence of the user equipment, and performing demodulation on data information of the user equipment according to a channel coefficient obtained by the channel estimation.