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METHOD FOR INSTRUCTING CSI FEEDBACK SIGNALING CONFIGURATION AND BASE STATION

  • US 20150098347A1
  • Filed: 04/26/2013
  • Published: 04/09/2015
  • Est. Priority Date: 05/10/2012
  • Status: Active Grant
First Claim
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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.

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