Intra-frequency Cell Reselection Indicator for Interference Mitigation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In wireless communication systems, intra-frequency cell reselection can cause interference with restricted association access points, leading to connectivity issues and reduced network performance, as mobile devices may not be able to connect to the most desirable access points due to restricted association policies.
Innovation Solution
A method and apparatus that utilize a reselection indicator to determine whether intra-frequency reselection is allowed, considering a projected interference threshold and timer-based evaluations, allowing mobile devices to select the highest ranked access points while mitigating interference by overriding restrictions when interference is below a certain level.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If mobile devices reselect to the highest ranked access point regardless of restricted association restrictions, then connectivity flexibility is improved, but interference with restricted association access points increases
Solution Approach 1:
The system implements a feedback mechanism where the mobile device receives a reselection indicator from the network, measures the signal strength of the restricted association access point, and adjusts its reselection behavior based on this feedback. When the measured signal strength exceeds a threshold, the device is allowed to reselect to the highest ranked access point; otherwise, it must respect the restricted association restriction, thereby resolving the contradiction between connectivity flexibility and interference prevention
Solution Approach 2:
The system changes the parameter of reselection indicator to control mobile device behavior. By dynamically setting the reselection indicator based on network conditions and signal strength measurements, the system enables flexible reselection when appropriate while preventing interference when necessary, thus resolving the technical contradiction
2Extent of automation
If mobile devices are restricted from connecting to certain access points, then network management control is improved, but connectivity options for mobile devices deteriorate
Solution Approach 1:
The system makes the restricted association restriction dynamic rather than static. The mobile device evaluates network conditions in real-time, including signal strength measurements and reselection indicator status, to determine whether to connect to restricted association access points. This dynamic approach allows the network to maintain control when necessary while providing connectivity options when appropriate, resolving the contradiction between network management control and connectivity options
3Reliability
If mobile devices evaluate multiple access points for reselection, then connectivity optimization is improved, but time consumption increases
Solution Approach 1:
The system performs preliminary action by having the mobile device measure and evaluate access point information in advance, including signal strength measurements and identification of restricted association access points. This preliminary evaluation allows the device to make faster reselection decisions when needed, as the necessary information is already gathered, thus resolving the contradiction between connectivity optimization and time consumption
Data Source
AI summary
Systems and methodologies are described that facilitate utilizing reselection indicators in reselecting access points in wireless communications. In particular, an indicator can be provided relating to a restricted association access point that specifies whether intra-frequency reselection is allowed. If so, a mobile device receiving the indicator can reselect to other access points, to which it has access, operating in a similar frequency. If not, the mobile device can evaluate access points in other frequencies so as not to cause substantial interference to the restricted association access point. In addition, a predicted level of interference caused by communicating with an intra-frequency access point can be computed and evaluated to override the reselection indicator, in some cases. Thus, a restricted association access point can control reselection for some devices to mitigate interference while allowing the devices to override prohibitive restricted access points.