Uplink Transmission Type Determination for Multi-Panel Wireless Devices
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently determining the type of uplink transmission to support high reliability and low latency requirements for applications like Industrial Internet of Things (IIoT) and Extended Reality (XR), particularly in scenarios where simultaneous multi-panel transmission is necessary.
Innovation Solution
A method and apparatus for determining the type of uplink transmission, based on HARQ feedback and arrival traffic, which configures panels for transmission and switches between diversity and multiplexing types to optimize performance for different scenarios, enabling simultaneous multi-panel transmission in 5G networks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If simultaneous multi-panel transmission is deployed to support high reliability and low latency requirements, then the capacity and reliability of uplink transmissions are improved, but the device complexity and configuration difficulty increase
Solution Approach 1:
The patent implements dynamic switching between diversity-type and multiplexing-type uplink transmissions based on real-time conditions. The terminal device determines the transmission type based on HARQ feedback and arrival traffic patterns, allowing the system to adapt to changing channel conditions and traffic requirements. This dynamic approach enables simultaneous multi-panel transmission to achieve high reliability when needed while avoiding unnecessary complexity when standard transmission suffices.
Solution Approach 2:
The patent changes key transmission parameters including the type of uplink transmission (diversity vs. multiplexing), the configuration of panels for transmission, and the selection of transport blocks. By dynamically adjusting these parameters based on HARQ feedback and traffic conditions, the system optimizes uplink transmission reliability without permanently increasing device complexity. The network device also adjusts parameters such as granting resources for retransmission and configuring panel usage.
2Adaptability or versatility
If dynamic switching between diversity and multiplexing types is implemented, then the adaptability to different scenarios is improved, but the control complexity and signaling overhead increase
Solution Approach 1:
The terminal device autonomously determines the type of uplink transmission based on locally available information including HARQ feedback from the network device and arrival traffic patterns. This self-service approach allows the terminal to adapt transmission types without requiring complex centralized control or extensive signaling exchanges. The terminal independently configures panels and selects transport blocks based on its own assessment of transmission conditions.
Solution Approach 2:
The system utilizes HARQ feedback from the network device to the terminal device as a key input for determining transmission type. This feedback mechanism enables the terminal to adapt its transmission strategy based on actual transmission outcomes. The network device's grants for retransmission and acknowledgments provide continuous feedback that guides the terminal's dynamic switching between diversity and multiplexing modes, reducing the need for explicit control signaling.
3Productivity
If simultaneous multi-panel transmission is used to meet stringent requirements of IIoT and XR applications, then the data rate and latency performance are improved, but the energy consumption and processing load increase
Solution Approach 1:
The patent implements selective simultaneous multi-panel transmission rather than continuous usage. The terminal device activates multiple panels and diverse transmission modes only when conditions warrant it—specifically when HARQ feedback indicates transmission failures or when arrival traffic patterns suggest high-priority data requiring low latency. For normal traffic conditions, the system uses standard single-panel transmission, thereby avoiding unnecessary energy consumption while maintaining the capability to achieve high data rates and low latency when required.
Data Source
AI summary
Methods and apparatus of determining type of uplink (UL) transmission are disclosed. The method performed by a terminal device in a network (NW) includes: receiving, from the network (NW), an indication that simultaneous multi-panel transmission is supported by the network (NW); determining a type of uplink (UL) transmission to be deployed, based on at least a HARQ feedback or arrival traffic; configuring one or more panels for transmission with the type of UL transmission to be deployed; and transmitting, to the network, a same transport block (TB) or different TBs via the type of UL transmission to be deployed using the one or more panels.