OAM Uplink Reference Signal Configuration for Antenna-Port Mapping
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Solution Overview
Problem
The challenge of configuring uplink transmission in OAM-based communication systems has not been adequately addressed, particularly in scenarios requiring resource allocation and mapping between antenna ports and OAM modes.
Innovation Solution
A method and apparatus for configuring uplink transmission in OAM communication systems, involving a first device determining and sending configuration information for uplink measurement reference signals based on second device capabilities, including OAM modal values and antenna ports, to facilitate efficient resource allocation and mapping.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If mode division multiplexing is implemented using OAM modes, then spectral efficiency and channel capacity are improved, but uplink transmission configuration complexity increases
Solution Approach 1:
The patent segments the uplink transmission configuration into two independent parts: downlink reference signal configuration (handled by network side) and uplink measurement reference signal configuration (handled by terminal side). This segmentation allows each part to be optimized independently, reducing overall configuration complexity while maintaining high spectral efficiency through OAM mode division multiplexing.
Solution Approach 2:
The patent introduces an intermediary mechanism where the network side configures downlink reference signals with OAM modes, and the terminal side automatically derives uplink measurement reference signal configurations based on capability information exchange. This intermediary approach eliminates the need for direct complex uplink configuration while maintaining the benefits of OAM-based multiplexing.
2Productivity
If OAM modes are used for multiplexing, then channel capacity increases, but resource allocation and mapping between antenna ports and OAM modes becomes difficult
Solution Approach 1:
The terminal side performs self-configuration by automatically determining uplink measurement reference signal parameters based on its own capability information and the configured downlink reference signals. This self-service mechanism simplifies resource allocation and mapping between antenna ports and OAM modes, eliminating the need for complex manual configuration while maintaining high channel capacity through OAM multiplexing.
Data Source
AI summary
A method for configuring uplink transmission based on orbital angular momentum (OAM), performed by a first device, includes: determining configuration information of an uplink measurement reference signal of a second device based on capability information of the second device, in which the configuration information includes at least one of an OAM modal value of the uplink measurement reference signal or an antenna port corresponding to the OAM modal value; and sending the configuration information of the uplink measurement reference signal to the second device.