Terminal Rate Matching for Mixed Release CSI-RS Interference
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Solution Overview
Problem
In future radio communication systems, particularly in 5G and later versions, supporting terminals with different releases (e.g., Rel-15, Rel-16, Rel-17) using full digital beams is challenging, leading to potential communication throughput issues due to interference and compatibility problems.
Innovation Solution
A terminal equipped with a receiving section for channel state information reference signals (CSI-RS) and a control section that applies rate matching or puncturing to specific channels or signals, allowing appropriate communication between terminals of different releases by managing radio resources and beam control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If full digital beam operation is adopted in the base station, then communication capacity and throughput are improved, but compatibility with old release terminals (Rel-15) deteriorates
Solution Approach 1:
The invention segments the terminal population into old release terminals (Rel-15) and new release terminals (Rel-16/17), allowing the base station to apply different beam management strategies to different segments. Old release terminals continue to use analog beam operations while new release terminals utilize full digital beam operations, thus maintaining backward compatibility while achieving improved throughput with new terminals.
Solution Approach 2:
The invention introduces an intermediary mechanism in the form of separate CSI-RS resource configurations and beam management procedures that mediate between old and new release terminals. The base station transmits different types of reference signals and control information tailored to each terminal type, enabling both to coexist without interference while allowing the system to achieve higher overall throughput.
2Adaptability or versatility
If analog beam operation is used for compatibility, then support for old release terminals is maintained, but communication throughput is limited
Solution Approach 1:
The invention segments the terminal population into old release terminals (Rel-15) and new release terminals (Rel-16/17), allowing the base station to apply different beam management strategies to different segments. Old release terminals continue to use analog beam operations while new release terminals utilize full digital beam operations, thus maintaining backward compatibility while achieving improved throughput with new terminals.
Solution Approach 2:
The base station is designed with multi-functionality to support both analog beam operations for old release terminals and full digital beam operations for new release terminals simultaneously. This universal capability allows the system to maintain broad compatibility while exploiting advanced digital beamforming techniques to achieve higher throughput where supported.
3Productivity
If different beam management methods are used for different terminal releases, then communication throughput is improved, but system complexity increases
Solution Approach 1:
The invention applies preliminary action by having the base station pre-configure different CSI-RS resource settings, beam management parameters, and reference signal configurations for old and new release terminals before communication begins. This advance preparation includes setting up separate resource pools and beam sweeping patterns, which simplifies the actual communication process by eliminating the need for complex real-time dynamic adjustments.
Solution Approach 2:
The invention uses copying by creating separate, parallel beam management configurations for old and new release terminals. Instead of modifying a single complex system, the base station maintains copied versions of reference signal resources and beam management procedures tailored to each terminal type, reducing the complexity of managing differences in real-time.
Data Source
AI summary
A terminal according to one aspect of the present disclosure includes: a receiving section that receives information related to a channel state information reference signal (CSI-RS) of a terminal according to an old release; and a control section that performs control of applying rate match or puncture to a specific channel or signal regarding a resource of the CSI-RS of the terminal according to the old release. According to one aspect of the present disclosure, even when there are terminals according to different releases, each of the terminals can appropriately perform communication.