Wireless Communication Apparatus Dynamic Multiplexing
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Solution Overview
Problem
In multicluster transmission, it is challenging to maintain low Cubic Metric (CM) while efficiently using data resources, as existing methods either deteriorate data resource efficiency or increase CM.
Innovation Solution
A radio communication apparatus and method that dynamically determine the multiplexing method for data and control information signals based on the number of carrier groups, switching between time division multiplexing and frequency division multiplexing to optimize resource usage and prevent CM increases.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If frequency division multiplexing is used to multiplex data signals and control information signals, then data resource efficiency is improved, but Cubic Metric (CM) increases
Solution Approach 1:
The patent dynamically selects between time division multiplexing and frequency division multiplexing based on the number of carrier groups allocated for data transmission. When the number of carrier groups is small (single-carrier case), time division multiplexing is used to maintain low CM. When the number of carrier groups is large (multicarrier case), frequency division multiplexing is used to improve data resource efficiency. This dynamic adaptation resolves the contradiction by adjusting the multiplexing method according to transmission conditions.
2Object-generated harmful factors
If time division multiplexing is used to multiplex data signals and control information signals, then Cubic Metric (CM) is kept low, but data resource efficiency deteriorates
Solution Approach 1:
The system dynamically switches between time division multiplexing and frequency division multiplexing based on the number of carrier groups. When few carrier groups are available, time division multiplexing preserves low CM characteristics. When many carrier groups are available, the system transitions to frequency division multiplexing to improve data resource efficiency. This dynamic selection resolves the contradiction by optimizing the multiplexing method according to available resources.
3Reliability
If multicluster transmission is used to allocate data signals to discontinuous carrier groups, then frequency diversity gain is improved, but Cubic Metric (CM) increases
Solution Approach 1:
The patent applies dynamic multiplexing method selection based on the number of carrier groups involved in multicluster transmission. When the number of carrier groups is small, time division multiplexing is used to maintain low CM while still providing frequency diversity. When the number of carrier groups is large, frequency division multiplexing is used to maximize frequency diversity gain while accepting higher CM. This resolves the contradiction by adapting the multiplexing approach to the scale of multicluster transmission.
Data Source
AI summary
Disclosed is a wireless communication apparatus that can improve the efficiency of using data resources, while suppressing the increase in CM of transport signals in a wireless communication system in which single-carrier transmissions and multi-cluster transmissions are coexistent. In this apparatus, a multiplex manner deciding unit (207) divides a control information signal into a first control information signal and a second control information signal, selects a time multiplex as the manner of multiplexing a data signal and the first control information signal, selects a frequency multiplex as the manner of multiplexing the data signal and the second control information signal, and increases the ratio of the second control information signal to the first control information signal as the number of clusters is increased.