Base Station Control Signal Allocation for Group PDCCH Coverage
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Solution Overview
Problem
Existing communication systems face challenges in appropriately placing common control signals, such as group common PDCCH, in radio resources, which affects the coverage and power efficiency of control signals in 5G networks.
Innovation Solution
A base station design that allocates a first control signal containing slot configuration information and a second control signal without such information, ensuring the number of symbols for the first control signal equals the smallest number of symbols allocated to the second control signal, optimizing resource usage and improving transmission power.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the number of symbols allocated to the first control signal is increased to improve transmission reliability and coverage, then the transmission power and coverage are enhanced, but the restrictions on other data channels increase
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting the number of symbols allocated to the first control signal based on terminal line quality. For terminals with poor line quality, more symbols are allocated to enhance reliability, while terminals with good line quality receive fewer symbol allocations, minimizing impact on data channels. This adaptive parameter adjustment resolves the contradiction between transmission reliability and data channel efficiency.
2Productivity
If the number of symbols allocated to the first control signal is decreased to minimize restrictions on other data channels, then data channel efficiency is improved, but transmission power and coverage are reduced
Solution Approach 1:
The patent applies local quality by differentiating resource allocation based on individual terminal characteristics, specifically line quality. Instead of uniform allocation, the system provides localized optimization where each terminal receives symbol allocations tailored to its specific needs. This ensures that terminals with poor line quality receive enhanced reliability support, while terminals with good line quality contribute more to data channel efficiency.
3Ease of operation
If a fixed number of symbols is allocated to the first control signal for all terminals, then allocation simplicity is maintained, but transmission performance varies for terminals with different line qualities
Solution Approach 1:
The patent applies dynamics by transitioning from static, fixed symbol allocation to dynamic, adaptive allocation. The number of symbols allocated to the first control signal varies based on terminal line quality conditions, allowing the system to respond to changing transmission requirements. This dynamic approach maintains operational simplicity through automated adaptation while significantly improving transmission performance for terminals with varying line qualities.
Data Source
AI summary
A base station includes: an allocating circuit that allocates, to a resource set which is monitored by a terminal belonging to a group, a first control signal which contains information indicating the configuration of a slot and a second control signal which does not contain the information indicating the configuration of a slot; and a transmitter that transmits the first control signal and the second control signal to a terminal. The number of symbols to which the first control signal is allocated is made equal to the smallest number of symbols to which the second control signal is allocated.