Single SSB Wake-Up for Uplink and Downlink Loop Tracking
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Solution Overview
Problem
Wireless communications systems face challenges in managing loop tracking tasks efficiently, particularly in complex environments, leading to increased power consumption due to the need for multiple synchronization signal burst set wake-ups for uplink and downlink beams during connected-mode discontinuous reception.
Innovation Solution
The method involves performing loop tracking tasks using a single synchronization signal block (SSB) during a synchronization signal burst set, utilizing both downlink and uplink serving beams to reduce the number of wake-ups, thereby conserving power.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple synchronization signal burst set wake-ups are performed for uplink and downlink beams, then loop tracking accuracy is maintained, but power consumption increases
Solution Approach 1:
The patent combines uplink and downlink loop tracking tasks into a single synchronization signal burst set wake-up event. The UE performs both uplink beam loop tracking and downlink beam loop tracking using one wake-up instead of separate wake-ups, thereby maintaining tracking accuracy while reducing power consumption.
Solution Approach 2:
The synchronization signal burst set is designed to serve multiple functions simultaneously: it provides both uplink beam tracking reference signals and downlink beam tracking reference signals within a single transmission burst, enabling the UE to perform both types of loop tracking in one wake-up event.
2Reliability
If multiple synchronization signal burst set wake-ups are performed, then beam tracking reliability is improved, but battery life decreases
Solution Approach 1:
The patent merges uplink and downlink beam tracking operations into a single synchronized wake-up event. By combining these operations, the number of wake-ups is reduced, which directly extends battery life while maintaining beam tracking reliability through the use of both uplink and downlink reference signals in the same burst set.
3Use of energy by moving object
If a single synchronization signal block is used for loop tracking, then power efficiency improves, but tracking precision may be compromised
Solution Approach 1:
The single synchronization signal block is designed with multi-functionality, containing both uplink beam tracking reference signals and downlink beam tracking reference signals. This allows the UE to perform both types of loop tracking with high precision using a single wake-up, maintaining measurement precision while improving power efficiency.
Solution Approach 2:
The synchronization signal block is segmented into distinct reference signal components for uplink and downlink tracking. This segmentation allows each type of loop tracking to receive dedicated reference signals within the single block, ensuring tracking precision is not compromised despite the reduced number of wake-ups.
Data Source
AI summary
Certain aspects of the present disclosure provide a method for wireless communications at a user equipment (UE). The UE may receive a single synchronization signal block (SSB) during a synchronization signal burst set (SSBS) occurrence. The single SSB may include at least a physical broadcast channel (PBCH) and a secondary synchronization signal (SSS). The UE may perform a loop tracking task using the single SSB, based on a downlink serving beam and an uplink serving beam of the UE.