Unlicensed Spectrum QoS Control via Segmented Parameters
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Solution Overview
Problem
Existing communication technologies face challenges in providing good communication services using unlicensed spectrum due to congestion and the need for maintaining quality of service (QoS) in unlicensed bands, which is often compromised by the common QoS settings between licensed and unlicensed spectrums.
Innovation Solution
A communication apparatus and method that obtain and transmit first control information indicating communication service quality for unlicensed spectrum, allowing for controlled radio communication using unlicensed spectrum, and enabling measurement of service quality achievement status.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If common QoS settings are used between licensed and unlicensed spectrums, then QoS consistency is maintained, but unlicensed spectrum congestion increases and service quality deteriorates
Solution Approach 1:
The patent segments QoS parameters into spectrum-specific groups: common QoS parameters applicable to both licensed and unlicensed spectrums, and unlicensed-specific QoS parameters that address congestion control, channel access, and interference management. This segmentation allows independent optimization of unlicensed spectrum parameters without affecting licensed spectrum performance.
Solution Approach 2:
The patent applies local quality by introducing unlicensed-specific QoS parameters that are tailored to the characteristics of unlicensed spectrum environments. These parameters include congestion control settings, channel access priorities, and interference management configurations that are locally optimized for unlicensed bands while maintaining common QoS frameworks for licensed spectrums.
2Productivity
If unlicensed spectrum is used to increase radio capacity, then data rates improve, but service quality control becomes difficult
Solution Approach 1:
The patent divides QoS parameters into two distinct sets: common parameters that apply to all spectrum types and unlicensed-specific parameters that address the unique challenges of unlicensed bands. This segmentation simplifies QoS control by providing a standardized framework while allowing specialized parameters to handle unlicensed spectrum complexities.
Solution Approach 2:
The patent introduces specific parameter changes for unlicensed spectrum including congestion control parameters, channel access priority parameters, and interference management parameters. These parameter changes enable fine-grained control of QoS in unlicensed environments without requiring complete redesign of the QoS framework.
3Quantity of substance
If traffic in unlicensed spectrum is increased to meet demand, then service coverage expands, but congestion increases and essential QoS cannot be achieved
Solution Approach 1:
The patent implements parameter changes by introducing unlicensed-specific QoS parameters that directly address congestion control and service quality guarantees. These parameters include maximum bit rate limits, minimum bit rate guarantees, and priority levels that enable traffic management in unlicensed spectrum while maintaining essential service quality.
Solution Approach 2:
The patent incorporates feedback mechanisms through measurement units that monitor the achievement status of communication service quality in unlicensed spectrum. This feedback enables dynamic adjustment of QoS parameters to maintain service quality even as traffic volume increases, allowing the system to respond to changing conditions in real-time.
Data Source
AI summary
In order to make it possible to provide a good communication service even when unlicensed spectrum is used, a communication apparatus according to an example aspect of the present disclosure includes an information obtaining unit configured to obtain first control information indicating communication service quality for unlicensed spectrum, and a communication processing unit configured to transmit the first control information to a communication node which communicates in a radio access network.