O-RAN Beam Information Masks for Lower Signaling Overhead
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Solution Overview
Problem
Existing wireless communication systems, particularly those supporting open-RAN (ORAN) architectures, face inefficiencies in interoperability and signaling overhead, especially in 5G/NR and LTE networks, due to inadequate methods for beam information transmission and channel indication between O-RAN distributed units (O-DU) and radio units (O-RU).
Innovation Solution
The implementation of control messages that include resource element (RE) and symbol masks to allocate frequency and time resources for reference signal transmission across multiple antenna ports, as well as puncturing patterns, to enhance interoperability and reduce signaling overhead between O-DU and O-RU.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If control messages include detailed beam information for multiple antenna ports, then beam information transmission capability is improved, but signaling overhead increases
Solution Approach 1:
The patent combines beam information for multiple antenna ports into a single control message, merging multiple information elements into one unified transmission unit. This reduces the number of separate signaling messages required while maintaining comprehensive beam information coverage across multiple ports.
Solution Approach 2:
The control message is designed with universal structure that can carry beam information for multiple antenna ports simultaneously. The message format incorporates flexible fields that adapt to different port configurations, enabling one message to serve multiple functions across diverse antenna setups.
2Manufacturing precision
If resource allocation for reference signal transmission is specified across multiple antenna ports, then resource allocation precision is improved, but device complexity increases
Solution Approach 1:
The patent segments resource allocation information into distinct fields within the control message, including resource element masks and symbol masks for different antenna ports. This structured segmentation enables precise resource allocation while maintaining organized, manageable data formats that reduce processing complexity.
Solution Approach 2:
The control message incorporates configurable parameters such as resource element offsets and symbol allocations that can be adjusted based on specific deployment requirements. These parameter changes allow precise resource allocation without hardcoding complex structures, enabling flexibility while maintaining processing efficiency.
3Productivity
If puncturing patterns are applied to channels, then resource utilization efficiency is improved, but processing time increases
Solution Approach 1:
The patent applies puncturing patterns in advance based on pre-configured rules and parameters received in control messages. By determining puncturing locations and patterns beforehand rather than dynamically during transmission, the system achieves efficient resource utilization while minimizing real-time processing delays.
Data Source
AI summary
Methods, systems, and devices for wireless communication are described. Some wireless communications network may operate in accordance with an open-RAN (ORAN) network specification which may support functional splitting between the ORAN distributed unit (O-DU) and the ORAN radio unit (RU). The O-DU may communicate with the O-RU using control messaging. The control message may include a resource resource element (RE) mask and a resource symbol mask, the resource RE mask indicating frequency resources to be allocated for a reference signal transmission across a set of antenna ports and the resource symbol mask indicating time resources to be allocated for the reference signal transmission. Additionally or alternatively, the O-DU may transmit a control message including a puncturing resource RE mask indicating frequency resources for applying a puncturing pattern and a symbol mask indicating time resources for applying the puncturing pattern during a transmission.