Uplink Transmission Overlap for Multiple TRPs
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently managing uplink and downlink transmissions to/from multiple transmission reception points (TRPs) in 5G and NR technologies, particularly in terms of protocol layer operations and resource allocation, leading to suboptimal performance and energy consumption.
Innovation Solution
The implementation of enhanced processes and signaling mechanisms in wireless devices and base stations to optimize operations with multiple TRPs, including bandwidth part adaptation, beam management, and advanced protocol layer functions, such as user plane and control plane split, to improve data transmission efficiency and reduce energy consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If uplink transmissions are managed to multiple TRPs using conventional protocols, then network coverage and reliability are improved, but protocol complexity and processing overhead increase significantly
Solution Approach 1:
The patent segments the uplink transmission process into distinct phases: initial transmission to a first TRP, and conditional retransmission to a second TRP. This segmentation allows the system to achieve diverse TRP coverage while maintaining manageable protocol complexity by handling multiple TRPs in a structured, phase-based manner rather than simultaneously managing complex multi-TRP coordination.
Solution Approach 2:
The patent implements dynamic TRP selection based on transmission conditions. The system initially transmits to one TRP and dynamically switches to another TRP for retransmission based on feedback or failure conditions. This dynamic approach allows the system to adapt to varying network conditions while keeping the base protocol relatively simple, as not all TRPs are actively managed simultaneously under all conditions.
2Productivity
If bandwidth part adaptation is implemented for multiple TRPs, then resource allocation efficiency is improved, but signaling overhead and processing requirements increase
Solution Approach 1:
The patent applies a universal bandwidth part adaptation mechanism that serves multiple TRPs through a common signaling framework. Rather than implementing separate bandwidth part management for each TRP (which would multiply signaling overhead), the system uses a multi-functional adaptation approach where bandwidth parts are configured and managed in a way that can be applied across multiple TRPs, reducing redundant signaling while maintaining efficient resource allocation.
3Productivity
If advanced protocol layer functions are implemented, then data transmission efficiency is improved, but energy consumption increases
Solution Approach 1:
The patent implements preliminary action by pre-configuring bandwidth parts and transmission parameters before actual data transmission occurs. This allows the system to have advanced protocol functions ready and optimized in advance, enabling efficient data transmission when needed while avoiding the energy cost of dynamic configuration and processing during active transmission. The preliminary setup phase consumes energy once, while benefiting from improved transmission efficiency in subsequent operations.
Data Source
AI summary
A wireless device may transmit a capability information element indicating that the wireless device supports overlapping uplink transmissions to a first TRP and a second TRP. The wireless device may transmit a first scheduled uplink transmission to the first TRP and may transmit a second scheduled uplink transmission to the second TRP. The first scheduled uplink transmission and the second scheduled uplink transmission may overlap in symbol(s).