Uplink Control Channel Configuration for Wireless Systems
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently transmitting uplink control information due to limited resources and varying terminal characteristics, such as coverage and urgency, which affects data transmission rates and latency.
Innovation Solution
A method for configuring the uplink control channel region based on the type and amount of uplink control information, terminal coverage, urgency, and subband division, allowing for flexible multiplexing methods and resource allocation to optimize transmission efficiency, even in scenarios with multiple terminals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the uplink control channel region is configured to be small to accommodate both uplink and downlink control channels in the same subframe, then resource utilization is improved, but the capacity to transmit uplink control information becomes insufficient when the amount of uplink control information increases
Solution Approach 1:
The patent implements dynamic configuration of the uplink control channel region by allowing the base station to flexibly determine the number of symbols allocated to the uplink control channel based on the actual amount of uplink control information that needs to be transmitted. This dynamic adjustment mechanism enables the system to optimize resource utilization when traffic is light while ensuring sufficient capacity when traffic increases, resolving the contradiction between resource efficiency and transmission capacity.
2Device complexity
If a fixed uplink control channel configuration is used, then system complexity is reduced, but the system cannot adapt to varying terminal characteristics such as coverage and urgency requirements
Solution Approach 1:
The patent applies local quality by configuring uplink control channel resources differently for different terminals based on their specific characteristics. Terminals with different coverage requirements, urgency levels, or service types can be allocated appropriate uplink control channel configurations, allowing the system to maintain low overall complexity while providing customized adaptations for individual terminal needs.
Solution Approach 2:
The system dynamically adapts the uplink control channel configuration to match terminal-specific requirements such as coverage class and service urgency. This dynamic adaptation allows the system to maintain simplicity in the base configuration while providing flexibility to adjust resources according to individual terminal characteristics when needed.
3Productivity
If multiple terminals transmit uplink control information simultaneously using the same resources, then resource efficiency is improved, but interference between terminals increases affecting transmission reliability
Solution Approach 1:
The patent segments the uplink control channel resources by introducing comb structures that divide the available resources into distinct subsets. Different terminals are assigned different comb indices, which create orthogonal or quasi-orthogonal resource partitions. This segmentation allows multiple terminals to transmit simultaneously with reduced interference, maintaining both resource efficiency and transmission reliability.
Data Source
AI summary
In the present invention, a method for transmitting uplink control information in a wireless communication system and an apparatus for supporting the same are disclosed. Particularly, a method for transmitting uplink control information performed by a terminal in a wireless communication system may comprise receiving, from a base station, a message comprising a specific symbol index indicating a starting point of the uplink control channel region of the terminal and a specific comb index indicating a comb structure of the uplink control channel region of the terminal and transmitting, to the base station, uplink control information by using at least one resource element corresponding to the received specific symbol index and the received specific comb index, wherein the specific comb index is allocated according to the number of symbols configuring the uplink control channel region of the terminal.