Supplemental Channel Switching for Wireless Signal Degradation
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Solution Overview
Problem
Cellular wireless communication networks face challenges in maintaining communication quality due to degradation in signal quality, especially when using fundamental channels, which have limitations in data rate and power levels, leading to potential loss of data during voice or data calls.
Innovation Solution
The system dynamically switches to supplemental channels with higher data rates and repetition levels when quality degradation is detected, allowing for multiple transmissions of data over forward and reverse links to improve reception chances, and can combine fundamental and supplemental channels to maintain communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If fundamental channels are used for transmission, then device complexity is reduced and ease of operation is improved, but communication reliability deteriorates due to signal quality degradation
Solution Approach 1:
The system dynamically switches between fundamental channels and supplemental channels based on detected signal quality conditions. When quality degradation is detected, the system transitions from using only fundamental channels to using supplemental channels with higher repetition levels, thereby adapting the communication parameters in real-time to maintain reliability.
Solution Approach 2:
The invention changes key transmission parameters including switching from fundamental channels to supplemental channels, increasing repetition levels, and adjusting data rates. These parameter changes enable the system to overcome signal quality degradation by using channels with more robust transmission characteristics.
2Productivity
If supplemental channels with higher data rates are used, then productivity is improved, but device complexity increases due to channel switching requirements
Solution Approach 1:
The system employs dynamic channel selection that switches between fundamental and supplemental channels based on real-time quality assessments. This dynamic approach allows the system to utilize high-data-rate supplemental channels when conditions permit, thereby improving productivity while managing complexity through automated decision-making.
Solution Approach 2:
The system continuously monitors communication quality and uses this feedback to determine when to switch between fundamental and supplemental channels. This feedback mechanism enables intelligent channel selection that optimizes data transmission rates while automatically managing the complexity of channel switching.
3Reliability
If fundamental channels are used, then device complexity is minimized, but communication reliability deteriorates during quality degradation
Solution Approach 1:
The system performs self-service by automatically detecting quality degradation and autonomously switching to supplemental channels with appropriate repetition levels. This self-service capability maintains transmission reliability without requiring manual channel configuration, thereby preserving ease of operation while improving reliability.
Solution Approach 2:
Through continuous quality monitoring and feedback-driven channel selection, the system automatically adjusts its transmission parameters to maintain reliability. The feedback mechanism eliminates the need for complex manual configuration while ensuring the system uses the most appropriate channels under varying conditions.
4Reliability
If repetition level is increased on fundamental channels, then communication reliability is improved, but productivity decreases due to lower effective data rate
Solution Approach 1:
The system dynamically adjusts the repetition level based on the channel being used. When supplemental channels are activated due to quality degradation, the system applies higher repetition levels specific to those channels. This dynamic adjustment maintains reliability through appropriate repetition while preserving the higher inherent data rates of supplemental channels, thereby maintaining productivity.
Solution Approach 2:
The invention changes the repetition level parameter specifically when transitioning to supplemental channels. This parameter change is contextual and channel-specific, allowing the system to apply higher repetition levels only where needed for reliability while maintaining lower repetition levels on fundamental channels to preserve data rate and productivity.
Data Source
AI summary
During an initial part of a communication session, a transmitting node transmits digital data over a first air interface channel to a receiving node, using a first data rate and a first level of repetition. A degradation in quality of the communication session is detected. During a subsequent part of the communication session, the transmitting node transmits digital data over the first air interface channel as before but also transmits the digital data over a second air interface channel, using a second data rate and a second level of repetition. The second data rate is higher than the first data rate, and the second level of repetition is higher than the first level of repetition. Thus, during a given transmission period, the transmitting node may transmit a voice frame once over the first air interface channel and N times over the second air interface channel.