CPC H04B 7/0626 (2013.01) [H04L 5/0048 (2013.01); H04W 24/08 (2013.01)] | 18 Claims |
1. A channel state information measurement method, comprising:
configuring, by a network side device, channel state information reference signal (CSI-RS) transmit information of M access points, wherein the CSI-RS transmit information is used to indicate to the M access points to periodically send a CSI-RS to a first user equipment at a preset interval, wherein the preset interval is a time interval and/or a subband interval, and wherein M is an integer greater than 1; and
obtaining, by the network side device, channel state information (CSI) corresponding to each of the M access points, wherein the CSI corresponding to each access point, of the M access points, comprises first CSI, and wherein the first CSI is information that is measured based on the CSI-RS corresponding to the access point and fed back by the first user equipment,
wherein a precoding matrix indicator (PMI) in the CSI corresponding to the access point is fed back, in accordance with the preset interval being the subband interval, at a granularity of a subband.
|