Uplink Degradation Detection for Inter-RAT Reselection
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Solution Overview
Problem
Wireless communication devices face service degradation when uplink channel conditions are disturbed, even if downlink channel conditions are within acceptable ranges, leading to poor service provision due to the lack of consideration for thermal and imbalance conditions between uplink and downlink communication links.
Innovation Solution
A method for wireless communication devices to monitor uplink communication conditions by executing attempts and detecting unsuccessful attempts, setting parameters indicating degradation, and initiating inter-RAT reselection when uplink threshold values are not met, while also considering temperature changes and power reductions to ensure seamless communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the UE relies solely on downlink measurements for reselection decisions, then the decision-making process remains simple and based on standard procedures, but the service quality deteriorates when uplink channel conditions are disturbed
Solution Approach 1:
The patent implements feedback by monitoring uplink communication attempts and using the results to adjust reselection decisions. The UE monitors whether uplink attempts are successful or unsuccessful, and this feedback information triggers inter-RAT reselection when uplink conditions deteriorate, thereby resolving the contradiction between simple decision-making and reliable service quality.
2Measurement precision
If the UE monitors uplink communication conditions through multiple unsuccessful attempts, then the detection of uplink degradation becomes more reliable, but the response time to switch networks is delayed
Solution Approach 1:
The patent applies preliminary action by pre-configuring the UE with thresholds for unsuccessful uplink attempts. When the number of unsuccessful attempts reaches this predetermined threshold, the UE immediately initiates inter-RAT reselection without further delay. This approach balances measurement precision with response time by establishing advance criteria for triggering the network switch.
3Device complexity
If the UE continues to operate on the current network node despite uplink degradation, then the device complexity remains low, but the communication reliability deteriorates
Solution Approach 1:
The patent implements self-service by enabling the UE to autonomously monitor its own uplink communication conditions and independently decide when to initiate inter-RAT reselection. The UE performs self-diagnosis of uplink degradation through monitoring unsuccessful communication attempts and automatically triggers network reselection without requiring external network control, thus maintaining low device complexity while improving communication reliability.
Data Source
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AI summary
The invention relates to a wireless communication device (UE) configured to be operating in a wireless cellular network supporting a wireless technology standard. For solving the problem of blockage of the UE in regards with one cellular network the UE makes a comparison of communication conditions in downlink and in uplink in order to detect unbalanced communication conditions between downlink and uplink channels and,in case downlink communication conditions are acceptable, but uplink communication conditions show a degradation, initiate aninter-RAT reselection.