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US 10,834,728 B2Granted
Method for indicating quasi co-location indication information and device
AssigneeHuawei Technologies Co., Ltd.
InventorsZhongfeng Li, Xinxian Li, Ning Wu, Yi Qin, Yu Sun
Life of this patent
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Abstract
A method for indicating quasi co-location indication information and a device are provided, to diversify reference signal types and reference signal configuration information that are indicated by QCL. The method includes: generating, by a base station, reference signal configuration information; performing, by the base station based on the reference signal configuration information, quasi co-location QCL assumption on reference signals corresponding to at least two antenna ports in reference signals, to generate QCL indication information; and sending, by the base station, the QCL indication information to a terminal.
Claims20
A method for indicating quasi co-location (QCL) indication information so as to reduce signaling overheads of reference signals, the method comprising:
- receiving, by a terminal, the QCL indication information sent by a base station having at least two antenna ports, wherein each antenna port has at least one reference signal,
- wherein the QCL indication information includes information about parameters shared between or among reference signals associated with the at least two antenna ports,
- wherein the QCL indication information includes pattern and type information for each parameter,
- wherein the pattern information includes time-frequency locations of resource elements for the reference signals,
- wherein the type information includes information about types of the reference signals, wherein the types include a demodulation reference signal, a channel state information reference signal and a beam reference signal, and
- wherein the QCL indication information for each parameter shared between or among the reference signals associated with the at least two antenna ports indicated whether the reference signals associated with the shared parameter have (i) different reference signal types, (ii) a same reference signal type and different reference signal patterns or (iii) a same reference signal type and a same reference signal pattern;
- and
- determining, by the terminal based on the QCL indication information, reference signals on which QCL assumption is performed and that are associated with the at least two antenna ports.
5 more elements
A base station comprising:
- at least two antenna ports;
- a processor configured to:
- generate reference signal configuration information, wherein each piece of reference signal configuration information is associated with one reference signal, and each reference signal is associated with at least one antenna port;
- perform, based on the reference signal configuration information, quasi co-location (QCL) assumption on reference signals associated with the at least two antenna ports in the reference signals, wherein each antenna port is associated with at least one reference signal, to generate QCL indication information that includes
- (i) information about parameters shared between or among reference signals associated with the at least two antenna ports,
- (ii) pattern and type information for each parameter,
- wherein the pattern information includes time-frequency locations of resource elements for the reference signals, and
- wherein the type information includes information about types of the reference signals, wherein the types include a demodulation reference signal, a channel state information reference signal and a beam reference signal, and
- (iii) wherein the information about each parameter shared indicates whether the reference signals associated with the shared parameter have (i) different reference signal types, (ii) a same reference signal type and different reference signal patterns or (iii) a same reference signal type and a same reference signal pattern
- and
- a transceiver configured to cooperate with the processor to send the QCL indication information to a terminal.
8 more elements
A terminal comprising:
- a receiver configured to cooperate with a processor to receive quasi co-location (QCL) indication information sent by a base station having at least two antenna ports, wherein each antenna port has at least one reference signal,
- wherein the QCL indication information includes information about parameters shared between or among reference signals associated with the at least two antenna ports;
- wherein the QCL indication information includes pattern and type information for each parameter,
- wherein the pattern information includes time-frequency locations of resource elements for the reference signals,
- wherein the type information includes information about types of the reference signals, wherein the types include a demodulation reference signal, a channel state information reference signal and a beam reference signal, and
- wherein the QCL indication information for each shared parameter indicates whether the reference signals associated with the shared parameter have (i) different reference signal types, (ii) a same reference signal type and different reference signal patterns or (iii) a same reference signal type and a same reference signal pattern;
- and
- the processor configured to determine, based on the QCL indication information, reference signals on which QCL assumption is performed and that are associated with the at least two antenna ports.
5 more elements
Dependencies are inferred from the claim text.