Unlicensed Channel Control Instruction Transmission Alignment
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Solution Overview
Problem
In wireless communication systems, the licensed channel is insufficient to meet the transmission requirements driven by new-generation Internet applications, leading to inefficiencies when base stations send control instructions to terminals through unlicensed channels, particularly due to misalignment in detection cycles between the base station and terminal.
Innovation Solution
A method where a base station sends a first control instruction to a terminal upon successfully occupying an unlicensed channel, carrying indication information that includes detection parameters such as resource location, detection cycle, and effective time window, allowing the terminal to adjust its detection manner and ensure alignment with the base station's channel occupancy period.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the base station sends control instructions through unlicensed channels using LBT mechanism, then the transmission capacity is improved to meet new-generation Internet application requirements, but the reliability of control instruction transmission deteriorates due to misalignment between base station channel occupancy timing and terminal detection timing
Solution Approach 1:
The base station feeds back timing indication information to the terminal, informing it of the actual channel occupancy timing. The terminal uses this feedback to adjust its detection timing, ensuring alignment with the base station's transmission window and preventing control instruction loss.
Solution Approach 2:
The base station performs channel detection and determines channel occupancy timing in advance before sending control instructions. It then provides this timing information to the terminal in advance, allowing the terminal to prepare its detection mechanism accordingly, ensuring synchronized detection when the control instruction is actually transmitted.
2Device complexity
If the terminal uses a fixed detection cycle to monitor for control instructions, then the device complexity is reduced, but the loss of information increases when the detection cycle does not align with the base station's channel occupancy period
Solution Approach 1:
The terminal's detection timing transitions from a fixed static cycle to a dynamic adjustable timing mechanism. Based on the timing indication information received from the base station, the terminal dynamically adjusts its detection window to align with the base station's actual channel occupancy period, preventing control instruction loss without requiring complex continuous monitoring.
Data Source
AI summary
A control instruction transmission method includes: in response to an unlicensed channel being occupied successfully, in which the first control instruction carries indication information configured to indicate a first detection parameter at least including a resource location on the unlicensed channel for the base station sending a control instruction; and sending a second control instruction on the resource location.