Secondary Cell Dormancy Timing for UE State Synchronization
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Solution Overview
Problem
Wireless communications systems face inefficiencies due to the inability of user equipment (UE) to determine the dormancy state of secondary cells (SCells) when not explicitly indicated by the base station, leading to potential throughput loss or power wastage.
Innovation Solution
The UE is configured with a duration of time and a default dormancy state for SCells, allowing it to determine and maintain the dormancy state until an explicit indication is received, thereby synchronizing with the base station's dormancy indications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If the base station does not explicitly indicate the dormancy state of SCells to the UE, then the signaling overhead is reduced, but the UE cannot determine the dormancy state leading to throughput loss or power wastage
Solution Approach 1:
The patent applies preliminary action by pre-configuring the UE with a duration of time and a default dormancy state for SCells before actual operation. This allows the UE to proactively determine and maintain the dormancy state without waiting for explicit base station indications, thereby preventing throughput loss and power wastage while avoiding continuous signaling overhead.
2Reliability
If the base station continuously indicates the dormancy state of SCells to the UE, then the UE can accurately determine the dormancy state, but the signaling overhead increases
Solution Approach 1:
The patent implements self-service by enabling the UE to autonomously determine and manage the dormancy state of SCells using pre-configured parameters (duration of time and default dormancy state). The UE independently maintains the dormancy state without requiring continuous base station indications, thereby eliminating signaling overhead while ensuring reliable dormancy state determination through the self-sufficient mechanism.
3Measurement precision
If the UE waits for explicit base station indications to determine SCell dormancy state, then the UE avoids making incorrect assumptions, but the system responsiveness decreases
Solution Approach 1:
The patent applies preliminary action by pre-configuring the UE with a duration of time and a default dormancy state, enabling the UE to immediately determine and act on SCell dormancy states without waiting for base station indications. This preliminary configuration ensures both accuracy (through predefined parameters) and responsiveness (through immediate UE action), resolving the contradiction between measurement precision and speed.
Data Source
AI summary
Methods, systems, and devices for wireless communications are described. Generally, the described techniques at a user equipment (UE) provide for efficiently identifying a dormancy state of a secondary cell (SCell) configured for communications with a base station. A UE may be configured with a duration of time for which an SCell is to be in an indicated dormancy state. Accordingly, when the UE receives an indication of a dormancy state for an SCell, the UE may determine that the SCell is in the indicated dormancy state for the duration of time. The UE may also be configured with a default dormancy state of the SCell. Thus, after the duration of time expires, the UE may determine that the SCell is in the default dormancy state (e.g., the UE may fall back to the default dormancy of the SCell after the duration of time expires).