Multi-Carrier Backoff Control for Unlicensed Band Coexistence
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Solution Overview
Problem
The challenge of efficiently transmitting signals in cellular wireless communication systems, particularly in unlicensed frequency bands, is exacerbated by interference from conventional wireless communication devices, necessitating a robust coexistence mechanism to ensure communication quality and efficient resource utilization.
Innovation Solution
A wireless communication apparatus and method that utilize a common back-off counter for multiple component carriers, performing back-off and data transmission only on idle carriers, with self-deferral and energy detection thresholds based on bandwidth and transmission power, to optimize multi-carrier transmission in unlicensed bands.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple component carriers are used for data transmission in unlicensed bands, then data transmission capacity and efficiency are improved, but interference with conventional wireless devices and communication quality guarantee become worse
Solution Approach 1:
The patent merges the back-off control of multiple component carriers by using a single common back-off counter that governs all component carriers in the carrier set. This coordinated approach ensures that transmissions across multiple carriers are synchronized and controlled uniformly, improving overall data transmission capacity while managing interference through centralized control rather than independent carrier operations
Solution Approach 2:
The common back-off counter serves as a universal control mechanism that manages access for all component carriers simultaneously. This single counter performs the function of coordinating multiple carriers, reducing complexity and ensuring consistent interference management across the entire carrier set while maintaining the ability to transmit data on multiple carriers when conditions permit
2Adaptability or versatility
If independent back-off is performed for each component carrier, then channel access flexibility is improved, but transmission synchronization and resource efficiency become worse
Solution Approach 1:
The patent combines the back-off control functions of multiple component carriers into a single common back-off counter. This merging ensures that all component carriers in the carrier set use the same back-off counter for channel access control, achieving synchronized transmission across carriers while maintaining adaptability through the shared counter's ability to respond to channel conditions affecting the entire carrier set
Data Source
AI summary
Disclosed are a method, an apparatus, and a system for transmitting a signal using multiple carriers. In detail, provided are a wireless communication apparatus including a communication module; and a processor, wherein the processor obtains a common back-off counter for a carrier set on which data is to be transmitted, wherein the carrier set includes at least one component carrier, performs back-off of each of the component carriers using the obtained common back-off counter, and simultaneously transmits data through at least one component carrier in which the back-off is completed and a wireless communication method using the same.