Multi-Panel Uplink Transmission for 5G Blockage Resilience
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Solution Overview
Problem
Current 5G wireless systems face challenges in efficiently managing uplink simultaneous transmission across multiple panels, particularly in scenarios where channel blockage occurs, leading to reduced capacity and reliability due to the limitations of existing multi-TRP transmission techniques.
Innovation Solution
The implementation of simultaneous multi-TRP multi-panel transmission (STxMP) techniques, where user equipment (UE) equipped with multiple antenna panels can transmit data and control information to multiple transmission-reception points (TRPs) simultaneously, using advanced scheduling methods such as single-DCI and multi-DCI schemes, and dynamic power headroom reporting to optimize transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If single-DCI scheduling is used for multi-TRP transmission, then device complexity is reduced, but reliability deteriorates when channel blockage occurs
Solution Approach 1:
The patent implements dynamic panel activation and selection mechanisms where the UE can switch between different antenna panels based on channel conditions. The network can dynamically activate specific panels for transmission to different TRPs, and the UE can provide feedback on panel availability and channel quality, enabling adaptive response to blockages while maintaining relatively simple scheduling
Solution Approach 2:
The patent changes the parameter of transmission diversity by utilizing multiple antenna panels with different spatial orientations. When channel blockage is detected on one panel/TRP combination, the system can change parameters by activating alternative panels, thereby maintaining reliability without requiring complex multi-DCI scheduling
2Reliability
If multi-DCI scheduling is used for multi-TRP transmission, then reliability is improved, but device complexity increases
Solution Approach 1:
The patent segments the transmission function by dividing it across multiple antenna panels, where each panel can independently transmit to different TRPs. This segmentation allows the system to achieve diversity gain and improved reliability through spatial separation, while the network can manage complexity by controlling activation and selection of specific panel combinations rather than managing all panels simultaneously
3Productivity
If multiple antenna panels are used for simultaneous transmission, then capacity is increased, but adaptability to channel blockages deteriorates
Solution Approach 1:
The patent implements dynamic panel activation and selection mechanisms where the UE can switch between different antenna panels based on channel conditions. The network can dynamically activate specific panels for transmission to different TRPs, and the UE can provide feedback on panel availability and channel quality, enabling adaptive response to blockages while maintaining relatively simple scheduling
Solution Approach 2:
The patent incorporates feedback mechanisms where the UE reports panel capability information, channel quality measurements, and blockage detection to the network. This feedback enables the network to make informed decisions about panel activation and TRP selection, thereby maintaining adaptability to channel conditions while utilizing multiple panels for increased capacity
Data Source
AI summary
A computer-readable storage medium stores instructions for execution by one or more processors of a UE to configure the UE for UL STxMP. Multiple CSI-RS transmissions originating from a base station are decoded. The multiple CSI-RS transmissions include a first CSI-RS received at a first UE antenna panel from a first TRP of the base station and a second CSI-RS received at a second UE antenna panel from a second TRP of the base station. A first RSRP measurement corresponding to the first CSI-RS and a second RSRP measurement corresponding to the second CSI-RS are determined. A CSI report including the first RSRP measurement with a panel ID of the first UE antenna panel and the second RSRP measurement with a panel ID of the second UE antenna panel is encoded for transmission to the base station.