Wireless Resource Allocation for FDM Signals with Mixed TTIs
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Solution Overview
Problem
In wireless communication systems, particularly in LTE, efficient resource allocation for multiple signals with different transmission time intervals (TTIs) is challenging due to issues with dynamic range management during automatic gain control (AGC), leading to potential errors and inefficiencies in signal reception.
Innovation Solution
A method for allocating resources in a wireless communication system where user equipment (UE) performs sensing on time resources corresponding to different TTIs, adjusting resource allocation based on sensing results to prevent dynamic range issues, including measuring signal strength and performing interpolation between reference signals for accurate AGC.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple signals with different TTI lengths are FDM in the same time resource, then resource utilization efficiency is improved, but dynamic range management during AGC becomes difficult leading to reception errors
Solution Approach 1:
The patent segments the time resource into different TTI lengths (short TTI and long TTI) and applies separate resource allocation and sensing mechanisms for each segment. This allows the system to maintain efficient FDM multiplexing while managing AGC dynamics separately for each TTI type, preventing reception errors caused by dynamic range issues.
2Measurement precision
If sensing is performed on time resources for TTI selection, then resource allocation accuracy is improved, but system complexity and processing overhead increase
Solution Approach 1:
The patent performs sensing operations in advance before final resource allocation and TTI selection. By conducting sensing on time resources beforehand, the system gathers necessary channel state information and signal quality metrics ahead of time, enabling accurate resource allocation without adding excessive processing complexity during the actual transmission phase.
Data Source
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AI summary
The present invention relates to a method and an apparatus for allocating a resource for multiple frequency-division multiplexed (FDM) signals of a terminal in a wireless communication system. Specifically, the method comprises the steps of: when a first signal having a first transmission time interval (TTI) is FDM with a second signal having a second TTI during a first cycle, performing sensing on a time resource corresponding to the second TTI; and allocating a time resource for the first signal according to a sensing result during a second cycle, wherein the first and second TTIs occupy time resources having different lengths.