UE Grouping Mechanisms for False Paging Reduction in 5G Networks
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Solution Overview
Problem
In 5G wireless communication networks, false paging occurs when UEs decode PDSCH unnecessarily, leading to increased power consumption due to radio-on time and baseband processing capacity, especially for Reduced Capability devices, as multiple UEs are assigned to the same paging occasion, resulting in inefficient power management.
Innovation Solution
Implementing grouping criteria and mechanisms to minimize unnecessary decoding of PDSCH by assigning UEs to specific groups based on their characteristics, such as subscription, identity, type, and paging history, and using indicators in DCI to determine if a UE belongs to a subgroup, allowing only relevant UEs to receive and decode PDSCH.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple UEs are assigned to the same paging occasion, then the network can efficiently manage paging resources, but false paging occurs and power consumption increases due to unnecessary PDSCH decoding
Solution Approach 1:
The patent segments UEs into different groups based on their characteristics (subscription type, device category, service requirements) and assigns them to different paging occasions or subgroups. This segmentation prevents all UEs from being paged simultaneously, reducing false paging events and unnecessary PDSCH decoding operations, thereby lowering power consumption while maintaining efficient paging resource utilization.
2Reliability
If UEs wake up to check paging messages, then they can receive network communications, but baseband processing capacity is consumed due to unnecessary decoding
Solution Approach 1:
The patent extracts and removes unnecessary PDSCH decoding operations by implementing early termination mechanisms. When a UE determines through group-specific paging indicators that it is not the target of the paging message, it can skip the energy-intensive PDSCH decoding process entirely. This extraction of unnecessary processing steps maintains reliable paging message reception for targeted UEs while significantly reducing baseband processing energy consumption for non-targeted UEs.
3Measurement precision
If UEs decode PDSCH to check for paging messages, then they can identify their identity, but radio-on time increases leading to higher power consumption
Solution Approach 1:
The patent implements preliminary action by providing group-specific paging indicators before the actual PDSCH transmission. UEs can check these indicators first to determine whether they belong to the group being paged. If the indicator shows that the UE's group is not being paged, the UE can immediately go back to sleep without activating its radio for PDSCH reception. This preliminary check maintains precise identity detection for targeted UEs while dramatically reducing radio-on time and associated power consumption for non-targeted UEs.
Data Source
AI summary
A wireless device, UE, in a communication network can receive a paging configuration indicating a paging occasion, PO, from a network node. The UE can further receive a downlink control information, DCI, on a physical downlink control channel, PDCCH, during the PO. The UE can further determine whether to receive data on a physical downlink shared channel, PDSCH, associated with the PDCCH based on the DCI and/or the paging configurations.