Terminal Device Blind Detection Reduction via Indication Information
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Solution Overview
Problem
In the context of the 3GPP new radio access technology, terminal devices face high complexity and power consumption due to the need to blindly detect multiple DCI indications during CoMP transmission, as they do not receive notification on the quantity of DCI used for PDSCH scheduling, leading to unnecessary detection processes.
Innovation Solution
A method where a network device sends first indication information to indicate whether second indication information exists in a time unit, allowing the terminal device to stop unnecessary blind detection processes by determining the presence or absence of additional DCI based on this information, thereby reducing detection complexity and power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the terminal device performs blind detection of multiple DCI indications without notification, then it can receive downlink data in CoMP transmission mode, but the detection complexity and power consumption increase significantly
Solution Approach 1:
The network device performs preliminary action by sending indication information before the terminal device performs blind detection. This indication information specifies the quantity of DCI messages and their mapping relationships to PDSCH, allowing the terminal device to prepare appropriately and avoid unnecessary blind detection attempts, thereby reducing detection complexity while ensuring reliable data reception
Solution Approach 2:
The network device provides feedback to the terminal device through indication information about the quantity of DCI messages and their mapping relationships. This feedback enables the terminal device to adjust its detection strategy accordingly, reducing power consumption and complexity by avoiding unnecessary blind detection while maintaining reliable downlink data reception
2Measurement precision
If the terminal device performs exhaustive blind detection to ensure receiving all possible DCI, then it can detect the correct scheduling information, but power consumption increases due to unnecessary detection processes
Solution Approach 1:
The network device sends indication information in advance that specifies the quantity of DCI messages and their mapping relationships to PDSCH. This preliminary information allows the terminal device to precisely target its detection efforts, maintaining high detection accuracy while avoiding unnecessary blind detection that would waste power
Solution Approach 2:
The indication information extracts and highlights only the relevant DCI quantity and mapping relationship information that the terminal device needs. By extracting this specific information, the terminal device can focus its detection power on the actual scheduling information without wasting energy on exhaustive blind detection of irrelevant DCI messages
Data Source
AI summary
This application provides an example communication method and an example apparatus. The method includes a first network device generates first indication information to indicate a first downlink resource. Second indication information indicates a second downlink resource. Because the first indication information may indicate whether the second indication information exists, if a terminal device detects the first indication information in the first time unit, and the first indication information indicates that the second indication information does not exist in the first time unit, the terminal device may stop a blind detection process on the second indication information in advance.