Uplink Control Information Resource Allocation for Unlicensed Spectrum
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Solution Overview
Problem
Current wireless communication systems face challenges in ensuring timely transmission of uplink control information over unlicensed spectrum, particularly due to channel detection failures, which impact link performance and delay, with no effective solution available.
Innovation Solution
A method and apparatus for determining the number of uplink control information transmission resources, where a terminal device determines the resources needed based on a preset rule or indication from a network device, allowing for adaptive resource allocation to ensure transmission probability and improve system performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If channel detection is performed before PUCCH transmission on unlicensed spectrum, then coexistence with other communication systems is ensured, but transmission delay and link performance deteriorate when channel detection fails
Solution Approach 1:
The patent applies preliminary action by performing channel detection before PUCCH transmission to ensure the channel is idle. This preliminary check prevents transmission conflicts with other systems but creates the technical contradiction where transmission delay increases if the channel is busy. The invention resolves this by establishing backup mechanisms and alternative transmission paths that can be activated when initial channel detection fails.
Solution Approach 2:
The patent implements beforehand cushioning by preparing multiple transmission resources and alternative paths in advance. When channel detection fails or transmission is blocked, pre-configured backup resources are immediately activated, cushioning against the potential transmission delay and reliability loss without requiring complex real-time decision-making.
2Reliability
If multiple transmission resources are allocated for uplink control information, then transmission probability is improved, but resource consumption increases
Solution Approach 1:
The patent applies dynamics by making the number of transmission resources adjustable rather than fixed. The network device dynamically determines the number of PUCCH resources based on channel conditions, transmission priority, and current system state. This allows the system to allocate more resources when transmission reliability is critical while conserving resources when conditions are favorable, resolving the contradiction between transmission probability and resource consumption.
Solution Approach 2:
The patent implements parameter changes by varying the number of transmission resources as a controllable parameter. The network device can adjust this parameter based on channel access modes, transmission priority levels, and observed channel conditions, allowing flexible optimization of the balance between transmission reliability and resource efficiency.
3Productivity
If adaptive resource allocation is implemented based on channel access modes, then system performance is improved, but device complexity increases
Solution Approach 1:
The patent applies self-service by enabling the terminal device to autonomously determine transmission resources based on pre-configured rules and parameters provided by the network. The device uses locally stored configuration information about different channel access modes and their corresponding resource allocation rules, eliminating the need for complex centralized control and reducing overall system complexity while maintaining adaptive performance.
Solution Approach 2:
The patent implements preliminary action by having the network device pre-configure and signal to the terminal the mapping between channel access modes and transmission resource quantities. This preliminary configuration allows the terminal to make autonomous decisions without real-time network intervention, simplifying the device complexity while enabling adaptive resource allocation that improves system performance.
Data Source
AI summary
Disclosed are a method and apparatus for determining the number of uplink control information transmission resources, and a program. The method may comprise: a terminal device determining target uplink control information; and the terminal device determining, according to a preset rule or indication information sent by a network device, the number of resource for transmitting the target uplink control information. By applying the solution of the application, system performance, etc. can be improved.