Determination method of channel quality indication information
A technology of channel quality indication and determination method, which is applied in the field of determination of channel quality indication information in wireless communication systems, and achieves the effect of good compatibility
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[0114] Example 1
[0115] Assume that the base station configures transmission mode 9 for a certain UE, and the base station configures 8 CSI-RS ports for the UE, and the CSI-RS port numbers are from 15 to 22.
[0116] The method for determining channel quality indicator information includes the following steps:
[0117] The base station eNodeB sends CSI-RS and CRS to the terminal UE;
[0118] The terminal UE performs channel measurement according to CSI-RS or CRS;
[0119] The terminal UE determines the CQI reference resource, and the terminal determines the CQI value on the CQI reference resource according to the channel measurement result.
[0120] Further, the CQI determination method includes: determining the value of the CQI requires assuming that the CSI-RS (channel state information reference symbol) does not use CQI reference resources. At this point, there are two possibilities:
[0121] The first possibility is that there are resources used by the CSI-RS in the CQI reference r...
Example Embodiment
[0127] Example 2
[0128] Assume that the base station configures transmission mode 9 for a certain UE, and the base station configures 8 CSI-RS ports for the UE, and the CSI-RS port numbers are from 15 to 22.
[0129] The method for determining channel quality indicator information includes the following steps:
[0130] The base station eNodeB sends CSI-RS and CRS to the terminal UE;
[0131] The terminal UE performs channel measurement according to CSI-RS or CRS;
[0132] The terminal UE determines the CQI reference resource, and the terminal determines the CQI value on the CQI reference resource according to the channel measurement result.
[0133] Further, the CQI determination method includes, for transmission mode 9, if the eNodeB is configured without PMI / RI and the number of CSI-RS ports of the eNodeB is equal to 8, the eNodeB can set 2 virtual CSI-RS ports, which is assumed to be used for CQI. The transmission strategy of the downlink data shared channel of the reference resour...
Example Embodiment
[0138] Example 3
[0139] Assume that the base station configures transmission mode 9 for a certain UE, and the base station configures 8 CSI-RS ports for the UE, and the CSI-RS port numbers are from 15 to 22.
[0140] The method for determining channel quality indicator information includes the following steps:
[0141] The base station eNodeB sends CSI-RS and CRS to the terminal UE;
[0142] The terminal UE performs channel measurement according to CSI-RS or CRS;
[0143] The terminal UE determines the CQI reference resource, and the terminal determines the CQI value on the CQI reference resource according to the channel measurement result.
[0144] Further, the CQI determination method includes, for transmission mode 9, if the eNodeB is configured without PMI / RI and the number of CSI-RS ports of the eNodeB is equal to 8, the UE sets 4 virtual CSI-RS ports, which is assumed to be used for CQI at this time The transmission strategy of the downlink data shared channel of the reference r...
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