Communication method, apparatus, and system
AssigneeHuawei Technologies Co., Ltd.
InventorsXu Zhang, Jianguo Wang
Life of this patent
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Abstract
This application relates to the field of wireless communications, and in particular, to a communication method, an apparatus, and a system in a wireless communications system. In the method, a terminal device detects a physical downlink control channel PDCCH sent by a network device, the PDCCH carries indication information, and the indication information is used to indicate a type of system information; the terminal device determines, based on the indication information, a physical resource carrying the system information; and the terminal device receives the system information on the physical resource. Based on this method, a network device can flexibly indicate a type of system information that needs to be sent.
Claims27
A method, comprising:
- obtaining, by a terminal device, downlink control information (DCI) by detecting a physical downlink control channel (PDCCH) carrying the DCI, wherein the downlink control information comprises indication information, and the indication information indicates that a type of system information is either system information type1 (SIB1) or a system information (SI) message other than SIB1;
- determining, by the terminal device according to the indication information, a physical resource carrying the system information;
- obtaining, by the terminal device according to a frequency domain reference point, a demodulation reference signal (DMRS) for the physical resource, wherein the frequency domain reference point is one of at least two frequency domain reference points, and the frequency domain reference points that are used to obtain DMRSs are different for the SIB1 and the SI message other than SIB1;
- and
- obtaining, by the terminal device based on the DMRS, the system information on the physical resource.
An apparatus, comprising at least one processor and a memory, where the memory stores a computer program, and when the processor executes the computer program, the apparatus is enabled to implement:
- obtaining downlink control information (DCI) by detecting a physical downlink control channel (PDCCH) carrying the DCI wherein the downlink control information comprises indication information, and the indication information indicates that a type of system information is either system information type1 (SIB1) or a system information (SI) message other than SIB1;
- determining, according to the indication information, a physical resource carrying the system information;
- obtaining, according to a frequency domain reference point, a demodulation reference signal (DMRS) for the physical resource, wherein the frequency domain reference point is one of at least two frequency domain reference points, and the frequency domain reference points that are used to obtain DMRSs are different for the SIB1 and the SI message other than SIB1;
- and
- obtaining based on the DMRS, the system information on the physical resource.
A non-transitory storage medium, configure to store program instructions;
- wherein, when executed by a computer, the instructions cause the computer to perform:
- obtaining, downlink control information (DCI) by detecting, a physical downlink control channel (PDCCH) carrying the DCI, wherein the downlink control information comprises indication information, and the indication information indicates that a type of system information is either system information type1 (SIB1) or a system information (SI) message other than SIB1;
- determining, according to the indication information, a physical resource carrying the system information;
- obtaining, according to a frequency domain reference point, a demodulation reference signal (DMRS) for the physical resource, wherein the frequency domain reference point is one of at least two frequency domain reference points, and the frequency domain reference points that are used to obtain DMRSs are different for the SIB1 and the SI message other than SIB1;
- and
- obtaining, based on the DMRS, the system information on the physical resource.
Dependencies are inferred from the claim text.