METHOD FOR INSTRUCTING CSI FEEDBACK SIGNALING CONFIGURATION AND BASE STATION

摘要

A method for instructing CSI feedback signaling configuration and base station are provided, the method comprising: a base station side notifies a terminal side, via the first higher layer signaling of a UE-Specific, a CSI-RS resource for measuring CSI, the CSI-RS resource comprising at least one of: the time frequency position of the CSI-RS resource in a subframe, the aerial port number configuration of the CSI-RS resource, a period and a subframe offset of the CSI-RS resource, the sequence identifier of the CSI-RS resource, and the power control information of the CSI-RS resource; the base station side instructs the terminal side to feed back the CSI corresponding to the CSI-RS resource. In the present invention, the base station side flexibly configures the terminal side to feed back various kinds of CSI information, thus enabling the base station side to flexibly and dynamically acquire the CSI, and in turn realizing precise link self-adaption and data transmission, and reducing the uplink feedback overhead and measurement complexity of the terminal side.

主权项

1. A method for instructing CSI feedback signaling configuration, comprising:
a base station side notifying a terminal side, via the first higher layer signaling of a UE-Specific, a CSI-RS resource for measuring CSI, wherein the CSI-RS resource comprises at least one of: a time frequency position of the CSI-RS resource in a subframe, aerial port number configuration of the CSI-RS resource, a period and a subframe offset of the CSI-RS resource, a sequence identifier of the CSI-RS resource, and power control information of the CSI-RS resource; and the base station side instructing the terminal side to feed back the CSI corresponding to the CSI-RS resource; wherein the step of the base station side instructing the terminal side to feed back the CSI corresponding to the CSI-RS resource comprises: the base station side dynamically instructing the terminal to select and feedback corresponding CSI via feedback triggering signaling bits in DCI Format 0 or DCI format 4 or a random access response or uplink scheduling grant signaling, and/or via a resource position where DCI Format 0 or DCI format 4 or a random access response or uplink scheduling grant signaling which belongs to the terminal and is blindly detected by the terminal side is located; wherein the feedback triggering signaling bits in DCI Format 0 or DCI format 4 or a random access response or uplink scheduling grant signaling are 2 bits, where 00 represents no CSI of any CSI-RS resource is triggered, and 01-11 respectively represent triggering CSI of different aggregation modes and/or interference assumptions of the CSI-RS resource; wherein the resource position where DCI Format 0 or DCI format 4 or a random access response or uplink scheduling grant signaling is located comprises at least one of: a starting position of a corresponding CCE, a corresponding aggregation level, a corresponding subframe number and a corresponding system frame number and a region instruction of a corresponding higher layer signaling configuration.