Logical Channel Prioritization for Synchronization in Wireless Systems
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current wireless communication systems face challenges in ensuring synchronization between different data flows for multi-modal services, leading to potential delays and poor user experiences due to scheduling based solely on logical channel priorities, which may miss transmission deadlines and fail to meet synchronization thresholds.
Innovation Solution
Implementing a processing system in user equipment (UE) and network nodes that receive configuration information indicating synchronization thresholds for logical channels, allowing for data transmission that satisfies these thresholds by prioritizing packets based on both delay and synchronization information, ensuring correlated packets are scheduled accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If packets are scheduled based only on LCH priority, then higher priority LCH packets are transmitted first, but transmission deadlines are missed and synchronization between different data flows is lost
Solution Approach 1:
The system performs preliminary actions by determining synchronization thresholds between different LCHs before scheduling packets. The network node configures and provides synchronization threshold information to the UE, enabling the UE to proactively plan packet transmissions to meet both priority requirements and synchronization requirements, thereby avoiding missed deadlines without complex real-time adjustments
Solution Approach 2:
The scheduling mechanism becomes dynamic by adapting packet selection based on real-time synchronization threshold evaluations. The UE dynamically adjusts which packets to transmit from which LCHs by evaluating whether transmitting a packet would violate synchronization thresholds with packets from other LCHs, allowing flexible adaptation to maintain both priority ordering and synchronization
2Manufacturing precision
If synchronization thresholds are enforced between logical channels, then packet synchronization is improved, but scheduling complexity increases
Solution Approach 1:
The synchronization control is segmented by applying different synchronization thresholds to different pairs of LCHs. Instead of a monolithic scheduling approach, the system divides the problem into manageable LCH-specific threshold evaluations, where the UE independently evaluates synchronization requirements for each LCH pair, making the complex synchronization task more tractable
Solution Approach 2:
The system changes parameters by introducing synchronization threshold values as configurable parameters between LCHs. The network node can adjust these threshold parameters based on service requirements, allowing the synchronization precision to be tuned without fundamentally changing the scheduling mechanism complexity
3Productivity
If multiple data flows with different timing deadlines are scheduled by LCH priority only, then higher priority traffic is served, but synchronization between correlated packets is lost
Solution Approach 1:
The system implements feedback by continuously evaluating whether transmitting a packet from one LCH would violate synchronization thresholds with packets from other LCHs. This feedback mechanism guides the UE's packet selection process, ensuring that productivity is maintained by transmitting packets efficiently while synchronization reliability is preserved through threshold-based decision-making
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. Some aspects relate generally to logical channel prioritization for synchronization. Some aspects more specifically relate to a user equipment (UE) performing logical channel prioritization based on synchronization information. In some aspects, the synchronization information may include a synchronization threshold between two or more logical channels. For example, the two or more logical channels may be associated with traffic for a multi-modal service or application. A network node may configure the two or more logical channels with respective synchronization thresholds based on the multi-modal service or application.