Multi-Stage DCI Paging for Lower-Power Wireless Wake-Ups
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Solution Overview
Problem
Existing wireless communication systems face inefficiencies in power consumption and resource utilization due to the even distribution of paging frames and occasions across time, leading to unnecessary network energy expenditure and reduced ability to enter deeper sleep modes.
Innovation Solution
Implementing multiple downlink control information (DCI) stages, where first and second stage DCIs are multiplexed in the frequency domain, allowing for more efficient paging transmission by reducing unnecessary network wake-ups and optimizing resource use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If paging frames and occasions are evenly distributed across time, then paging coverage is ensured, but network power consumption increases and ability to enter sleep modes is reduced
Solution Approach 1:
The patent segments the paging transmission into two distinct stages: first stage DCI for initial paging indication and second stage DCI for detailed paging information. This segmentation allows the network to transmit essential paging information efficiently while enabling deeper sleep modes, as only necessary wake-ups are triggered by the first stage indication rather than requiring continuous monitoring for all paging details.
Solution Approach 2:
The patent transitions from traditional time-domain paging distribution to a frequency-domain multiplexing approach for DCI stages. By multiplexing first stage and second stage DCIs in the frequency domain, the system achieves more efficient paging transmission without requiring continuous network wake-ups, thereby reducing power consumption while maintaining paging coverage.
2Productivity
If multiple DCI stages are implemented, then paging transmission efficiency is improved, but device complexity increases
Solution Approach 1:
The DCI is segmented into two functional stages with distinct purposes: first stage DCI handles paging indication and resource allocation, while second stage DCI provides detailed paging information. This segmentation improves processing efficiency by dividing complex operations into manageable steps, allowing UEs to process paging information more systematically without overwhelming complexity in a single DCI structure.
Solution Approach 2:
The first stage DCI performs preliminary actions by indicating paging presence and allocating resources before the second stage DCI transmits detailed information. This preliminary action allows UEs to prepare for subsequent processing and reduces the complexity of handling all paging information in a single complex DCI structure.
Data Source
AI summary
Various aspects of the present disclosure relate to methods, apparatuses, and devices for wireless communication. A user equipment (UE) may receive one or more first stage downlink control information (DCI). The UE may receive a second stage DCI. The UE may determine whether a UE bit is set to true in the second stage DCI. The UE may determine physical downlink shared channel (PDSCH) resources from the one or more first stage DCI. The UE may receive a radio resource control (RRC) paging message based on the PDSCH resources included in the one or more first stage DCI. The UE may determine whether a paging record of the UE is included in the RRC paging message. The UE may forward the paging record to an upper layer of the UE in response to determining that paging record of the UE is included in the RRC paging message.