Uplink Channel Resource Allocation for 5G PUCCH Conflict Resolution
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Solution Overview
Problem
In 5G systems, terminal devices face challenges in transmitting both short-PUCCH and long-PUCCH simultaneously within the same time domain resource unit due to potential conflicts, especially when they do not support transmitting multiple uplink channels or signals simultaneously in a symbol.
Innovation Solution
The method involves determining a first time domain resource for transmitting an uplink channel, where each channel resource unit includes M time domain symbols, with the last N symbols used for reference signals, allowing for separate demodulation of information and re-allocating resources to avoid conflicts, ensuring efficient transmission by using partially overlapping or non-overlapping resources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the terminal device transmits both short-PUCCH and long-PUCCH in the same time domain resource unit, then the feedback efficiency is improved, but the device complexity increases and transmission reliability deteriorates due to resource conflicts
Solution Approach 1:
The long-PUCCH time domain resource is segmented into multiple channel resource units, where each unit includes M time domain symbols with the last N symbols reserved for reference signals. This segmentation allows the terminal to selectively transmit on non-overlapping resource units, resolving conflicts while maintaining feedback efficiency.
Solution Approach 2:
The patent implements dynamic resource selection where the terminal device determines which channel resource units to use based on received indication information from the network device. This dynamic adjustment allows the system to adapt to different conflict scenarios, maintaining transmission reliability while achieving efficient feedback.
2Device complexity
If the terminal device does not support simultaneous transmission of multiple uplink channels, then the device complexity is reduced, but the productivity deteriorates due to inability to transmit both short-PUCCH and long-PUCCH
Solution Approach 1:
The patent resolves the contradiction by introducing a new dimension of resource allocation - dividing the time domain resource into multiple channel resource units with different symbol allocations. This allows simple terminals to achieve efficient feedback by selecting appropriate non-overlapping units without requiring complex simultaneous transmission capabilities.
3Reliability
If the first time domain resource is fully allocated for long-PUCCH, then the transmission reliability is improved, but the productivity deteriorates due to resource waste when conflicts occur
Solution Approach 1:
Instead of allocating the entire long-PUCCH resource unit, the patent applies partial action by allowing the terminal to use only the necessary channel resource units that do not conflict with short-PUCCH. This prevents resource waste while ensuring reliable transmission on the selected units.
Data Source
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AI summary
The present application discloses a channel transmission method, a terminal device and a network device. The method includes: receiving, by a terminal device, first information transmitted by a network device at a first moment; and determining, by the terminal device, a first time domain resource for transmitting a first uplink channel according to the first information, where the first time domain resource is located in the target time domain resource unit, the first time domain resource includes P channel resource units, each of the P channel resource units includes M time domain symbols, and the last N time domain symbols of the M time domain symbols are used to transmit a reference signal. Since the last N symbols of the M time domain symbols of each channel resource unit are used to transmit the reference signal, when transmission of two pieces of control information is affected by a resource conflict, the network device can also effectively demodulate received channels to ensure efficient transmission of control channels.