Channel state information measurement method and user equipment
The present disclosure relates to a pre-5 th -Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4 th -Generation (4G) communication system such as Long Term Evolution (LTE). Embodiments of the present disclosure provide a channel state information measurement method, including: receiving, by a user equipment (UE), resource indication information for a CSI measurement; performing, by the UE, the CSI measurement according to the resource indication information, and transmitting a Channel Quality Indicator (CQI) report to a control node. According to the present disclosure, users may be scheduled by the base station more effectively and the efficiency of the whole network may be increased.
1. A method for transmitting a channel quality indicator (CQI) report by a user equipment (UE), the method comprising:
receiving, by the UE, configuration information indicating resources for a channel state information (CSI) measurement;
receiving, by the UE, signaling information indicating that a base station occupies a carrier on an unlicensed band in at least one subframe, from the base station;
identifying, by the UE, at least one subframe in which the base station occupies the carrier on the unlicensed band, based on the signaling information;
generating a CQI report based on measurement results at the at least one identified subframe, while excluding a measurement result of at least one subframe in which the base station does not occupy a carrier on the unlicensed band; and
transmitting the CQI report to the base station.
2. The method of claim 1 , wherein the
configuration information includes channel measurement and/or interference measurement resource configuration information, which indicates aperiodic channel measurement and/or interference measurement resource.
3. The method of claim 1 , wherein the configuration information comprises
CSI reference signal configuration information and/or CSI interference measurement resource configuration information, and
wherein the method further comprises determining, by the UE toward earlier subframes from subframe n-n CQI_ref or a most recent subframe before subframe n-nCQI-ref where a resource indicated by the CSI reference signal configuration information and/or CSI interference measurement resource configuration information is located in turn, whether a subframe where the indicated resource is located is a valid downlink subframe.
4. The method of claim 3 , further comprising determining, by the UE, if the base station does not occupy the unlicensed band in a subframe where the resource indicated by the CSI reference signal configuration information and/or CSI interference measurement resource configuration information is located, the subframe where the resource indicated by the CSI reference signal configuration information and/or CSI interference measurement resource configuration information is located, is not a valid downlink subframe.
5. The method of claim 1 , wherein the configuration information comprises channel measurement and/or interference measurement resource pattern information, and
wherein the channel measurement and/or interference measurement resource pattern information comprises indication information of one of N preconfigured patterns configured by higher layer.
6. The method of claim 1 , further comprising:
detecting, by the UE, reference signals transmitted in the at least one identified subframe.
7. The method of claim 1 , wherein the signaling information is included in a signaling for indicating the at least one subframe occupied by the base station, or a signaling for scheduling the UE in the at least one subframe.
8. A user equipment (UE) for transmitting a channel quality indicator (CQI) report, the UE comprising:
a transceiver configured to:
receive configuration information indicating resources for a channel state information (CSI) measurement, and
receive signaling information indicating that the base station occupies a carrier on an unlicensed band in at least one subframe; and
a processor configured to:
identify at least one subframe in which the base station occupies a carrier on the unlicensed band based on the signaling information,
generate a CQI report based on measurement results at the at least one identified subframe, while excluding a measurement result of at least one subframe in which the base station does not occupy a carrier on the unlicensed band; and
control the transceiver to transmit the CQI report to the base station.
9. The UE of claim 8 , wherein the
configuration information includes channel measurement and/or interference measurement resource configuration information, which indicates aperiodic channel measurement and/or interference measurement resource.
10. The UE of claim 8 , wherein the configuration information comprises
CSI reference signal configuration information and/or CSI interference measurement resource configuration information, and
wherein the processor is further configured to determine toward earlier subframes from subframe n-n CQI-ref or a most recent subframe before subframe n-n CQI-ref where the resource indicated by the CSI reference signal configuration information and/or CSI interference measurement resource configuration information is located in turn, whether a subframe where the indicated resource is located is a valid downlink subframe.
11. The UE of claim 10 , wherein, if the base station does not occupy the unlicensed band in a subframe where the resource indicated by the CSI reference signal configuration information and/or CSI interference measurement resource configuration information is located, the processor is further configured to determine the subframe where the resource indicated by the CSI reference signal configuration information and/or CSI interference measurement resource configuration information is located, is not a valid downlink subframe.
12. The UE of claim 8 , wherein the configuration information comprises channel measurement and/or interference measurement resource pattern information, and
wherein the channel measurement and/or interference measurement resource pattern information comprises: indication information of one of N preconfigured patterns configured by higher layer.
13. The UE of claim 8 , wherein the processor is further configured to detect reference signals transmitted in the at least one identified subframe.
14. The UE of claim 8 , wherein the signaling information is included in a signaling for indicating the at least one subframe occupied by the base station, or a signaling for scheduling the UE in the at least one subframe.