Combined Timing and Search Space Indication for UE Power Saving
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Solution Overview
Problem
In wireless communication systems, power saving is hindered when timing values and search space set groups are not coordinated, leading to suboptimal power management in user equipment (UE) operations.
Innovation Solution
A combined timing indication and search space set group indication is provided, allowing UE to associate timing values with specific search space sets, enabling coordinated power saving by switching between different timing values and search space sets based on received control information (DCI) from the base station.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If separate timing indication and search space set group indication are used, then flexibility in configuring timing and search space is improved, but power consumption increases due to uncoordinated operations
Solution Approach 1:
The patent combines timing indication and search space set group indication into a single unified indication mechanism. The base station transmits a combined indication that simultaneously specifies both the timing value and the search space set group, allowing the UE to coordinate its operations and enter sleep mode more effectively, thereby reducing power consumption while maintaining configuration flexibility.
Solution Approach 2:
The combined indication mechanism serves multiple functions simultaneously: it provides timing information, specifies search space set groups, and enables power saving coordination all through a single signaling mechanism. This multi-functional approach eliminates the need for separate indications and allows the UE to optimize its power consumption without sacrificing adaptability.
2Reliability
If UE monitors search space set groups continuously, then communication reliability is improved, but power saving deteriorates
Solution Approach 1:
The patent enables dynamic switching between different search space set groups based on the combined indication received from the base station. The UE can transition between active monitoring states and sleep modes dynamically, adjusting its monitoring behavior according to the indicated search space set group, thereby maintaining communication reliability while reducing unnecessary power consumption during sleep periods.
Solution Approach 2:
The combined indication mechanism allows the UE to periodically wake up and monitor specific search space set groups at predetermined intervals rather than continuously monitoring. This periodic monitoring approach maintains communication reliability by ensuring the UE checks for important communications at regular intervals while significantly reducing power consumption compared to continuous monitoring.
3Use of energy by moving object
If timing values are extended for power saving, then power consumption decreases, but communication latency increases
Solution Approach 1:
The patent utilizes parameter changes in the combined indication to dynamically adjust timing values. The base station can indicate different timing values through the combined indication, allowing the UE to extend its sleep duration when appropriate while maintaining the ability to respond quickly when needed. This flexible parameter adjustment optimizes the balance between power consumption and communication latency based on current network conditions.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive downlink control information (DCI) that includes a combined indication of a minimum timing value, associated with a timing for transmission or reception of a communication corresponding to the DCI, and a search space set group. The UE may monitor the search space set group, or commence a sleep mode, based at least in part on the DCI. Numerous other aspects are provided.