Paging Channel Design for Wireless UE Power Reduction
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Solution Overview
Problem
In next-generation wireless communication systems operating at high frequencies, paging transmission/reception using beamforming results in increased signaling overhead and UE power consumption, necessitating an enhanced method for improved performance.
Innovation Solution
The proposed solution involves optimizing the paging channel design and transmission mechanism by configuring multiple paging blocks and slots within a paging occasion, allowing for flexible mapping of paging information onto different beams and reducing the number of time slots a UE needs to monitor, thereby minimizing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If paging transmission uses beamforming in high frequency bands, then paging coverage and signal quality are improved, but signaling overhead and UE power consumption increase
Solution Approach 1:
The paging occasion is segmented into multiple paging blocks, where each paging block can be transmitted on a different beam. The UE only needs to monitor the first paging block to determine if there is paging information, avoiding the need to monitor all time slots across all beams, thus reducing power consumption while maintaining reliable paging coverage.
Solution Approach 2:
The network transmits paging information in the first paging block before subsequent paging blocks. The UE performs preliminary monitoring of only the first paging block to determine whether paging information exists, eliminating the need to continuously monitor all subsequent blocks and reducing overall power consumption while ensuring paging reliability.
2Reliability
If paging transmission uses beamforming in high frequency bands, then paging coverage and signal quality are improved, but signaling overhead increases
Solution Approach 1:
The paging occasion is divided into multiple paging blocks that can be transmitted on different beams. By segmenting the paging transmission this way, the system reduces the need for repeated full paging messages across all beams, thereby reducing signaling overhead while maintaining comprehensive paging coverage through the segmented block structure.
3Reliability
If UE monitors all time slots for paging in beamforming system, then paging reception reliability is improved, but power consumption increases
Solution Approach 1:
The UE performs preliminary monitoring of the first paging block to determine if paging information is present. If paging information is detected in the first block, the UE can stop monitoring subsequent blocks, achieving reliable paging reception while significantly reducing power consumption compared to monitoring all time slots.
Solution Approach 2:
The UE monitors only the necessary portion of paging blocks (starting with the first one) rather than all time slots. This partial monitoring approach is sufficient to achieve reliable paging reception since paging information, if present, will be indicated in the first monitored block, eliminating the need for excessive monitoring of all subsequent slots.
Data Source
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AI summary
The present disclosure relates to a communication method by a terminal in a wireless communication system, the method comprising receiving, from a base station, paging search space information; identifying at least one physical downlink control channel, PDCCH, monitoring occasion for paging based on the paging search space information; and receiving, from the base station, a paging message by monitoring a PDCCH monitoring occasion of the identified at least one PDCCH monitoring occasion for paging, wherein a synchronization signal block, SSB, corresponding to the PDCCH monitoring occasion is received in a same time unit of the PDCCH monitoring occasion.