Paging Indication Bits in DCI for Wireless Terminal Power Optimization
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Solution Overview
Problem
In wireless communications systems, terminal devices waste power consumption by detecting the physical downlink shared channel (PDSCH) even when they are not paged, leading to inefficient energy use.
Innovation Solution
A paging indication information transmission method that allows terminal devices to determine whether to detect the PDSCH based on paging indication information, which includes specific bits from the downlink control information (DCI), thereby reducing unnecessary power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the terminal device always detects the PDSCH to ensure reliable paging reception, then the paging reliability is improved, but the power consumption increases
Solution Approach 1:
The patent applies preliminary action by introducing a paging indication message that is sent before the PDSCH carrying paging data. This indication message预先 informs the terminal device whether paging data will be transmitted, allowing the terminal to make advance decisions about whether to activate PDSCH detection. By performing this indication action beforehand, the system ensures that terminals only detect PDSCH when actually needed, thereby maintaining paging reliability while significantly reducing unnecessary power consumption from continuous PDSCH monitoring.
2Adaptability or versatility
If the DCI is extended to include paging indication bits, then the paging indication capability is improved, but the DCI length increases
Solution Approach 1:
The patent applies universality by designing the paging indication message to be transmitted using existing DCI formats and physical downlink control channel (PDCCH) resources that are already allocated for other purposes. Specifically, the indication can be carried in DCI format 1_0 or 1_1 with appropriate field interpretations, or in PDCCH occasions that overlap with system information or random access procedures. This multi-functional use of existing control resources enables paging indication capability without extending DCI length or requiring additional dedicated control channels.
Data Source
AI summary
This application provides an example paging indication information transmission method and an example communications apparatus. The method includes the terminal device receiving paging indication information, where the paging indication information includes at least one of the following bits: all or some bits of valid bits of a short message field in downlink control information (DCI), all or some bits of remaining bits of the short message field in the DCI, and all or some bits of a reserved field in the DCI. The method also includes the terminal device determining, based on the paging indication information, whether to detect a physical downlink shared channel (PDSCH).