Adaptive Reference Signal Configuration for Multi-Antenna Systems
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Solution Overview
Problem
Existing communication systems, particularly those with multiple antennas, face challenges in adapting to changes in antenna array structures and increased antenna ports, limiting their ability to efficiently send and receive reference signals, which affects channel state measurement and coherent demodulation.
Innovation Solution
The method involves transmitting and receiving reference signals based on resource configuration information that includes antenna port and subframe configurations, allowing for adaptive antenna array structures and support for more than eight antenna ports, enabling efficient channel state measurement and coherent demodulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple antenna ports are used to improve spectral efficiency, then system capacity increases, but the system cannot adapt to different antenna array structures and is limited to a maximum of eight antenna ports
Solution Approach 1:
The patent introduces dynamic configuration parameters (antennaPortConfiguration and subframeConfiguration) that allow the system to adaptively adjust reference signal resource allocation based on different antenna array structures. The antenna port configuration can dynamically indicate different numbers of antenna ports (more than eight), and the subframe configuration can dynamically specify which subframes carry reference signals, enabling the system to adapt to varying antenna configurations rather than being fixed at eight ports.
Solution Approach 2:
The patent changes the parameter definition of antenna ports from a fixed maximum of eight to a configurable number that can exceed eight. By introducing new configuration parameters that can take different values, the system allows antenna port quantities to be adjusted according to the actual antenna array structure, thereby resolving the contradiction between supporting more ports and adapting to different structures.
2Ease of manufacture
If existing reference signal configuration methods are used, then implementation is simple, but the system cannot support antenna port configurations beyond eight ports
Solution Approach 1:
The patent creates a universal reference signal configuration mechanism that can handle both traditional eight-port configurations and extended configurations beyond eight ports. The antenna port configuration parameter serves multiple functions: it can indicate different numbers of antenna ports, different array structures, and different reference signal resource allocations, making the system universally applicable to various antenna configurations without requiring separate implementation schemes.
3Productivity
If antenna array structure changes are made to improve system performance, then spectral efficiency increases, but compatibility with legacy systems decreases
Solution Approach 1:
The patent employs dynamic configuration parameters that can adapt to different operational scenarios. When communicating with legacy systems, the antenna port configuration can be set to indicate traditional structures, ensuring compatibility. When communicating with advanced systems, the same configuration mechanism can indicate newer structures with more than eight antenna ports, thereby maintaining backward compatibility while enabling forward progression.
Data Source
AI summary
Embodiments of the present invention relate to methods and apparatuses for receiving and sending a reference signal, user equipment, and a base station. A method for receiving a reference signal includes: receiving resource configuration information of a reference signal, where the resource configuration information of the reference signal includes information about an antenna port configuration and a reference signal subframe configuration, the antenna port configuration indicates an antenna port structure, and the reference signal subframe configuration indicates a reference signal subframe for sending the reference signal on one or more antenna port groups; and receiving the reference signal according to the resource configuration information of the reference signal. In the embodiments of the present invention, a communications system can adapt to an antenna array structure and more antenna port quantity configurations, which is used for cell selection or MCS selection and scheduling, thereby improving a system throughput.