Base Station Frequency Resource Switching for Control Command Transmission
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Solution Overview
Problem
Wireless communication systems face challenges in transmitting control commands using licensed frequency domain resources, which are insufficient to meet the demands of new generation Internet applications, leading to failures in occupying unlicensed frequency domain resources for control command transmission.
Innovation Solution
A method where a base station switches to a second unlicensed frequency domain resource after failing to occupy a first one, starting timing from a preset detection time point and sending the control command when a preset duration is reached, ensuring successful transmission by considering the terminal's switching capability between frequency domain resources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the base station occupies unlicensed frequency domain resources for control command transmission, then the transmission capacity is improved, but the occupancy may fail due to resource conflicts
Solution Approach 1:
The patent combines multiple unlicensed frequency domain resources (first frequency domain resource and second frequency domain resource) into a unified transmission strategy. When the first resource occupancy fails, the system seamlessly merges to use the second resource, thereby maintaining transmission capacity while improving occupancy success rate through resource diversity
Solution Approach 2:
The base station performs preliminary actions by pre-configuring multiple unlicensed frequency domain resources and establishing detection time points before actual transmission. This preliminary preparation ensures that when occupancy of one resource fails, alternative resources are already available, improving both transmission capacity and occupancy reliability
2Loss of time
If the base station sends control command at preset detection time point, then the transmission timing is synchronized, but the terminal may miss the command due to switching between frequency domain resources
Solution Approach 1:
The base station calculates and applies a preset duration offset in advance, which compensates for the terminal's switching time. This preliminary timing adjustment ensures that the control command is sent at an optimal time when the terminal has completed its frequency domain resource switching, preventing command data loss while maintaining detection timing synchronization
Solution Approach 2:
The patent introduces a time cushion (preset duration) between the detection time point and the actual transmission time. This cushion accounts for the terminal's resource switching duration, ensuring that the command is transmitted only after the terminal is ready to receive it, thereby preventing information loss while maintaining timing coordination
3Adaptability or versatility
If the terminal switches between frequency domain resources, then the resource utilization is improved, but the switching takes time causing detection delays
Solution Approach 1:
The terminal performs frequency domain resource switching in advance based on pre-configured detection time points. By completing the switching action before the actual command transmission, the terminal maintains high resource utilization adaptability while minimizing detection delays through proactive resource preparation
Data Source
AI summary
A control instruction transmission method includes: after unsuccessfully occupying a first frequency-domain resource, occupying a second frequency-domain resource, wherein the first and second frequency-domain resource are different unlicensed frequency-domain resources; and starting timing from a pre-set detection moment, and when the timing duration reaches a pre-set duration, sending a control instruction by means of the second frequency-domain resource. A base station can configure different unlicensed frequency-domain resources for a terminal. After occupying a first frequency-domain resource unsuccessfully, the base station occupies a second frequency-domain resource, and starts timing from a pre-set detection moment, and when the timing duration reaches a pre-set duration, sends a control instruction through the second frequency-domain resource, thereby ensuring that when unsuccessfully occupying a certain unlicensed frequency-domain resource, the base station can also send a control instruction through occupying another unlicensed frequency-domain resource.