Method and apparatus for transreceiving downlink signal by considering antenna port relationship in wireless communication system
First Claim
1. A method for receiving data by a user equipment (UE) in a wireless communication system, the method comprising:
- receiving downlink control information (DCI) which is configured according to DCI format 1A; and
receiving, in a subframe, physical downlink shared channel (PDSCH) data scheduled by the DCI,wherein the UE is configured with a transmission mode for a coordinated multi-point (CoMP) operation, andwherein when the subframe is a Multicast Broadcast Single Frequency Network (MBSFN) subframe, the UE determines a PDSCH starting symbol of the subframe by using a lowest indexed PDSCH resource element mapping and Quasi co-location Indicator (PQI) parameter set among one or more PQI parameter sets configured in the UE.
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Abstract
The present invention relates to a wireless communication system, and more specifically, disclosed are a method and an apparatus for transmitting or receiving a downlink signal by considering an antenna port relationship. A method for user equipment receiving a physical downlink shared channel (PDSCH) signal in the wireless communication system, according to one embodiment of the present invention, comprises the steps of: determining a start symbol index of the PDSCH from the downlink subframe; and receiving the PDSCH signal based on the start symbol index. When the DCI is comprised according to DCI format 1A, and the downlink subframe is a multicast broadcast single frequency network (MBSFN) subframe, the start symbol index can be determined depending on a PDSCH start symbol value which is included in a PDSCH resource element mapping and Quasi co-location indicator (PQI) that is established by an upper layer.
21 Citations
19 Claims
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1. A method for receiving data by a user equipment (UE) in a wireless communication system, the method comprising:
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receiving downlink control information (DCI) which is configured according to DCI format 1A; and receiving, in a subframe, physical downlink shared channel (PDSCH) data scheduled by the DCI, wherein the UE is configured with a transmission mode for a coordinated multi-point (CoMP) operation, and wherein when the subframe is a Multicast Broadcast Single Frequency Network (MBSFN) subframe, the UE determines a PDSCH starting symbol of the subframe by using a lowest indexed PDSCH resource element mapping and Quasi co-location Indicator (PQI) parameter set among one or more PQI parameter sets configured in the UE. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 18)
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10. A user equipment (UE) comprising:
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a receiver; a processor, operatively coupled to the receiver, wherein the processor is configured to; control the receiver to receive downlink control information (DCI), which is configured according to DCI format 1A, and to receive, in a subframe, physical downlink shared channel (PDSCH) data scheduled by the DCI, wherein the UE is configured with a transmission mode for a coordinated multi-point (CoMP) operation, and wherein when the subframe is a Multicast Broadcast Single Frequency Network (MBSFN) subframe, the processor determines a PDSCH starting symbol of the subframe by using a lowest indexed PDSCH resource element mapping and Quasi co-location Indicator (PQI) parameter set among one or more PQI parameter sets configured in the UE. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 19)
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Specification