Beam Indication Multiplexing for PDCCH and PDSCH Signaling
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Solution Overview
Problem
In communications systems, there is a signaling redundancy issue when simultaneously sending a physical downlink control channel and a physical downlink shared channel, as user equipment can only use one receive beam, leading to inefficient beam indication information usage.
Innovation Solution
The method involves using the same receive beam indication information for both channels, where the first information is used for the physical downlink control channel and the second information is reused as an indicator value for the physical downlink shared channel, allowing for efficient multiplexing and reducing redundant signaling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If beam indication information is sent separately for PDCCH and PDSCH, then each channel can be indicated independently, but signaling redundancy occurs and efficiency decreases
Solution Approach 1:
The patent combines the beam indication information for PDCCH and PDSCH into a single indication mechanism. The network device uses one beam indication information to indicate the receive beam for both channels when they are transmitted in the same time unit, eliminating redundant signaling while maintaining accurate beam indication for both control and data channels.
Solution Approach 2:
The beam indication information is designed to serve multiple functions simultaneously. A single beam indication information element can indicate the receive beam for both PDCCH and PDSCH, making the signaling mechanism universal and applicable to multiple channels without requiring separate dedicated indications for each.
2Reliability
If separate beam indication information is used for PDCCH and PDSCH, then complete beam control is achieved, but power consumption increases due to redundant scanning
Solution Approach 1:
By merging the beam indication for PDCCH and PDSCH into a single indication, the user equipment no longer needs to perform separate beam scanning procedures for each channel. The device can use the same beam indication information to configure its receive beam for both channels, significantly reducing the time and energy spent on beam scanning while maintaining reliable reception.
3Use of energy by moving object
If only one receive beam is used for simultaneous PDCCH and PDSCH reception, then power is saved, but beam indication redundancy problem occurs
Solution Approach 1:
The beam indication information is designed with multi-functionality to serve both PDCCH and PDSCH simultaneously. The single beam indication information contains sufficient details to configure the receive beam for both channels, ensuring that no beam indication information is lost or redundant, while still enabling the use of a single receive beam for efficient power consumption.
Data Source
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Figure 4A
AI summary
This application discloses an information indication method and a related device. In the information indication method, a terminal device may receive first information, and the first information is information used to instruct the terminal device to receive a first channel in a first time unit; the terminal device receives second information, and the second information is information used to instruct the terminal device to receive a second channel in a second time unit; the terminal device receives the first channel based on the first information; and the terminal device receives the second channel based on the first information when the first time unit is equal to the second time unit, and the second information is a first indicator value. The method helps to use the first information and the second information in signaling to a greatest extent, so as to avoid repeated indication from the first information and the second information, and reuse the second information to indicate other additional information, thereby reducing redundant information and improving signaling indication efficiency.