DCI-Based Group Paging to Avoid Unnecessary PDSCH Demodulation
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Solution Overview
Problem
In wireless communication systems, terminals in RRC-IDLE or RRC-INACTIVE states waste energy by demodulating PDSCHs to determine if a paging message is intended for them, even when no message is found, affecting battery life due to unnecessary processing.
Innovation Solution
Utilizing reserved bits in DCI to indicate whether there are paging messages for a terminal group, allowing terminals to determine if they need to receive and demodulate PDSCHs based on their group affiliation, thereby reducing unnecessary processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If terminals demodulate PDSCHs to determine whether paging messages are intended for them, then paging message detection accuracy is improved, but terminal energy consumption increases
Solution Approach 1:
The patent applies preliminary action by having the network device pre-indicate in DCI whether paging messages exist for a terminal group before the terminal demodulates PDSCH. The terminal checks this indication first, and only demodulates PDSCH when the indication confirms paging messages exist for its group, avoiding unnecessary demodulation when no paging messages are present.
2Reliability
If terminals demodulate PDSCHs to determine whether paging messages are intended for them, then paging message detection completeness is improved, but battery life decreases
Solution Approach 1:
The network device performs preliminary indication in DCI about the presence of paging messages for terminal groups. Terminals use this advance information to decide whether to demodulate PDSCH, ensuring complete paging detection when messages exist while avoiding unnecessary demodulation that would drain battery life.
3Reliability
If terminals receive and process all PDSCHs in a paging occasion, then no paging messages are missed, but unnecessary processing increases energy waste
Solution Approach 1:
The patent extracts the essential information about paging message presence from the PDSCH content and places it in the DCI indication. Terminals only need to extract and check this indication bit, taking out the critical decision-making information without processing the entire PDSCH when paging messages are not present for their group.
Solution Approach 2:
The network device performs preliminary indication in DCI about the presence of paging messages for terminal groups. Terminals use this advance information to decide whether to demodulate PDSCH, ensuring complete paging detection when messages exist while avoiding unnecessary demodulation that would drain battery life.
Data Source
AI summary
The present disclosure relates to paging methods, paging apparatuses, and storage media. A paging method is applied to a network device and can include determining downlink control information, wherein the downlink control information comprises one or more bits of which a respective bit indicates whether there are one or more paging messages for a terminal group, and sending the downlink control information. A paging method is applied a terminal can include obtaining downlink control information, wherein the downlink control information comprises one or more bits of which a respective bit indicates whether there are one or more paging messages for a terminal group, and determining a terminal group to which the terminal belongs, and determining whether to receive paging messages or not based on the terminal group to which the terminal belongs and a bit corresponding to the terminal group.