Pausing Small Data Transmissions for Default BWP Monitoring
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Solution Overview
Problem
In wireless communications, user equipment (UE) faces challenges in monitoring default bandwidth parts (BWP) for cell selection or reselection and receiving updated system information while performing small data transmissions (SDTs) in an inactive state, due to the inability to operate in both initial and default BWPs simultaneously, leading to delays and decreased reliability.
Innovation Solution
The UE pauses SDTs to monitor the default BWP for cell defining synchronization signal blocks (CD-SSBs) and receive updated system information by interrupting transmissions during configured measurement gaps or based on signal quality thresholds, allowing for periodic, semi-static, or network-triggered interruptions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the UE continuously transmits SDTs in the initial BWP, then data transmission productivity is maintained, but the UE cannot monitor the default BWP for cell selection or reselection, decreasing reliability
Solution Approach 1:
The patent implements periodic action by configuring measurement gaps at regular intervals during which the UE pauses SDT transmissions to monitor the default BWP. These periodic measurement gaps allow the UE to periodically perform cell selection or reselection measurements without completely stopping data transmissions, thus balancing reliability improvements with maintained productivity.
2Reliability
If the UE monitors the default BWP for reference signals, then cell selection or reselection reliability is improved, but SDT transmissions are interrupted, reducing productivity
Solution Approach 1:
The patent applies segmentation by dividing the monitoring task into separate time segments: measurement gaps for monitoring the default BWP and non-gap periods for SDT transmissions. This temporal segmentation allows the UE to perform both functions (monitoring and transmitting) without continuous interference, reducing the overall time loss compared to complete monitoring interruptions.
Solution Approach 2:
The patent implements dynamics by making the SDT transmission behavior adaptive based on measurement gap configurations. The UE dynamically adjusts its transmission schedule according to network-configured measurement gap patterns, allowing flexible optimization between monitoring accuracy and transmission continuity based on current network conditions and requirements.
3Adaptability or versatility
If the UE operates in both initial and default BWPs simultaneously, then both SDT and reference signal monitoring can occur, but device complexity increases
Solution Approach 1:
The patent applies merging by combining the monitoring of default BWP reference signals with the existing SDT operation in the initial BWP through coordinated time scheduling. Instead of requiring fully independent simultaneous operations, the UE merges these functions by coordinating their time resources, reducing the overall processing complexity while maintaining dual BWP operational capability.
Data Source
AI summary
Methods, systems, and devices for wireless communication are described. A user equipment (UE) may pause, while operating in an inactive mode, the performance of one or more small data transmissions (SDTs) in an initial bandwidth part (BWP) in order to monitor for a first set of reference signals in a default BWP. The UE may pause the performance of the one or more SDTs in the first BWP periodically, semi-statically, in accordance with a network trigger, in accordance with the capabilities of the UE, or a combination thereof. The UE may monitor the second BWP for the first set of reference signals, receive the first set of reference signals in accordance with the monitoring, and measure the first set of reference signals. In accordance with the measuring the first set of reference signals, the UE may resume the performance of the one or more SDTs in the first BWP.