Quasi co-location identification of reference symbol ports for coordinated multi-point communication systems
First Claim
1. A method for receiving reference signals by an user equipment (UE), the method comprising:
- receiving channel state information reference signal (CSI-RS) configuration information including a CSI-RS configuration identifier (ID), a resource configuration, a subframe configuration, and quasi co-location (QCL) cell-specific reference signal (CRS) information; and
receiving a CSI-RS and a CRS corresponding to the CSI-RS configuration information based on the CSI-RS configuration information,wherein the QCL CRS information indicates the CRS corresponding to the CSI-RS configuration information that is quasi co-located with the CSI-RS corresponding to the CSI-RS configuration information.
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Abstract
Methods and apparatuses indicate and identify quasi co-located reference signal ports. A method of identifying by a UE includes identifying, from downlink control information, a CSI-RS port that is quasi co-located with a DM-RS port assigned to the UE. The method includes identifying large scale properties for the assigned DM-RS port based on large scale properties for the CSI-RS port. The method includes performing channel estimation and/or time/frequency synchronization using the identified large scale properties for the DM-RS port. Another method for identifying by a UE includes identifying, from downlink control information, a CRS port that is quasi co-located with a CSI-RS port configured for the UE. The method includes identifying large scale properties for the configured CSI-RS port based on large scale properties for the CRS port. The method includes performing channel estimation and/or time/frequency synchronization using the identified large scale properties for the CSI-RS port.
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Citations
16 Claims
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1. A method for receiving reference signals by an user equipment (UE), the method comprising:
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receiving channel state information reference signal (CSI-RS) configuration information including a CSI-RS configuration identifier (ID), a resource configuration, a subframe configuration, and quasi co-location (QCL) cell-specific reference signal (CRS) information; and receiving a CSI-RS and a CRS corresponding to the CSI-RS configuration information based on the CSI-RS configuration information, wherein the QCL CRS information indicates the CRS corresponding to the CSI-RS configuration information that is quasi co-located with the CSI-RS corresponding to the CSI-RS configuration information. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An apparatus for receiving reference signals by an user equipment (UE), the apparatus comprising:
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a controller; and receiver processing circuitry configured to; receive channel state information reference signal (CSI-RS) configuration information including a CSI-RS configuration identifier (ID), a resource configuration, a subframe configuration, and quasi co-location (QCL) cell-specific reference signal (CRS) information; and receive a CSI-RS and a CRS corresponding to the CSI-RS configuration information based on the CSI-RS configuration information, wherein the QCL CRS information indicates the CRS corresponding to the CSI-RS configuration information that is quasi co-located with the CSI-RS corresponding to the CSI-RS configuration information. - View Dependent Claims (9, 15, 16)
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10. An apparatus, for receiving reference signals by an user equipment (UE), the apparatus comprising:
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a controller; and receiver processing circuitry configured to; receive channel state information reference signal (CSI-RS) configuration information including a CSI-RS configuration identifier (ID), a resource configuration, a subframe configuration, and quasi co-location (QCL) cell-specific reference signal (CRS) information, receive a CSI-RS and a CRS corresponding to the CSI-RS configuration information based on the CSI-RS configuration information, receive a control channel including demodulation reference signal (DMRS) information and QCL information, and receive a data channel indicated by the control channel, based on at least one DMRS port corresponding to the DMRS information and at least one CSI-RS port corresponding to the QCL information, wherein the QCL CRS information indicates the CRS corresponding to the CSI-RS configuration information that is quasi co-located with the CSI-RS corresponding to the CSI-RS configuration information, and wherein the at least one DMRS port corresponding to the DMRS information and at least one CSI-RS port corresponding to the QCL information is quasi co-located. - View Dependent Claims (11, 12, 13, 14)
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Specification