Configured-Grant Uplink Split Control for Multipath Relay UEs
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Solution Overview
Problem
Existing mobile communication systems face inefficiencies in controlling uplink data split over multipath connections, particularly in scenarios where fast and dynamic resource allocation is needed to optimize resource utilization and power consumption for remote user equipment at the cell edge.
Innovation Solution
Implementing a method for controlling uplink data transmission over a direct and indirect path using configured grants, allowing dynamic activation and deactivation of the configured grant to manage data split based on actual resource availability and channel conditions, thereby eliminating the need for semi-static primary-secondary connection configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If semi-static primary-secondary connection configurations are used, then device complexity is reduced, but resource utilization efficiency and power consumption optimization are worsened
Solution Approach 1:
The patent implements dynamic path selection by enabling the remote UE to switch between direct and indirect paths based on real-time conditions. The network entity configures both path types, and the UE dynamically selects which path to use for uplink data transmission, transforming the static configuration into a dynamic adaptive system that optimizes resource utilization without requiring complex semi-static reconfiguration procedures.
Solution Approach 2:
The patent changes the control parameter from semi-static configuration to dynamic indication. The network entity sends path indication information that dynamically specifies which path (direct or indirect) the UE should use for uplink transmission. This parameter change enables fast adaptation to varying channel conditions and resource availability, improving productivity without increasing device complexity.
2Use of energy by moving object
If dynamic path switching is implemented, then power consumption optimization is improved, but control signaling overhead increases
Solution Approach 1:
The patent extracts the path selection decision from complex semi-static configuration procedures and implements it through simple dynamic indication. The network entity determines the optimal path based on current conditions and sends a concise indication to the UE, which then executes the path switching. This extraction reduces the control overhead compared to full reconfiguration while enabling power consumption optimization through selective use of indirect paths.
Solution Approach 2:
The patent prepares both direct and indirect path configurations in advance, so when path switching is needed, the UE can immediately activate the pre-configured alternative path without lengthy setup procedures. The network entity pre-establishes the indirect path through relay UE, and when switching is required, it simply indicates which pre-prepared path to use, reducing control signaling overhead while enabling fast power optimization.
3Loss of time
If configured grants are used for path control, then response time is reduced, but system complexity increases
Solution Approach 1:
The patent enables the remote UE to autonomously control uplink data transmission by configuring granted uplink resources for both direct and indirect paths. The UE can independently switch between paths using the pre-configured grants without requiring dynamic scheduling requests or complex resource allocation procedures. This self-service approach reduces response time while keeping system complexity manageable by leveraging existing grant mechanisms.
Data Source
AI summary
Systems, methods, apparatuses, and computer program products for controlling the PDCP level data split from a remote UE over MP. One method may include a user equipment, receiving a message from a network entity comprising an indication of a path control via a configured grant, and, based at least in part on the indication of the path control via the configured grant, performing data transmission over at least one of a direct path with the network entity and an indirect path with the network entity via a relay user equipment.