Link Adaptation Resumption via CQI Offset
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Single chip mobile wireless devices face performance penalties after connection interruptions with wireless access networks, as they are unable to maintain simultaneous connections to multiple wireless networks, leading to downgraded data rates due to perceived poor channel quality.
Innovation Solution
A method where the mobile wireless device adjusts channel quality metrics, such as CQI and RI, to compensate for connection interruptions by reporting improved signal quality information to the wireless access network, thereby influencing data allocation and improving downlink performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the mobile wireless device switches between different wireless networks to maintain connectivity, then the device can stay registered with multiple networks, but connection interruptions occur causing downgraded data rates
Solution Approach 1:
The mobile wireless device applies preliminary action by adjusting channel quality metrics (CQI) in advance before connection interruptions occur. The device anticipates potential interruptions and proactively modifies channel quality reports to prevent data rate degradation when connections resume, rather than reacting after the interruption has caused performance loss.
2Reliability
If the wireless access network penalizes downlink performance after connection interruptions, then the network can account for potential quality issues, but unnecessary penalties reduce data transmission rates
Solution Approach 1:
The mobile wireless device implements feedback by continuously monitoring connection status and channel quality, then providing adjusted channel quality metric reports to the wireless access network. This feedback mechanism allows the device to communicate the actual quality of the connection after interruptions, enabling the network to make more accurate decisions about data rate allocation without applying unnecessary penalties.
3Measurement precision
If the mobile wireless device reports accurate channel quality metrics after interruption, then the network can allocate appropriate data rates, but the device must compensate for network-side penalties to restore optimal performance
Solution Approach 1:
The mobile wireless device applies parameter changes by modifying channel quality metric values (such as CQI and RI) that are reported to the wireless access network. After connection interruptions, the device adjusts these parameters to compensate for any penalties the network may apply, thereby restoring optimal downlink performance and data rate allocation.
Data Source
AI summary
Methods, apparatuses and computer readable media are described that adjust signaling messages that include channel quality metrics communicated between a mobile wireless device and a wireless access network before and/or after interruption of a connection to improve downlink performance after resumption of the connection. One or more adjusted channel quality metrics are determined and communicated to the wireless access network to compensate at least in part for an estimate of communication channel performance degradation by a network element of the wireless access network following the interruption and resumption of the connection between the mobile wireless device and the wireless access network.