Location-Based Network Reselection to Reduce UE Search Overhead
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Solution Overview
Problem
Existing network reselection methods in user equipment (UE) result in low efficiency due to the need to perform network search and measurement on all surrounding communications networks, lacking the ability to learn network information of networks around the UE's geographical location.
Innovation Solution
The UE determines its current geographical location and uses a correspondence between geographical location and network information to identify nearby networks meeting a proximity condition, allowing it to perform network reselection based on stored or queried network information, thereby reducing the need for comprehensive network searches and measurements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the UE performs network search processing on all surrounding communications networks, then the UE can find all available networks, but the network reselection efficiency is low
Solution Approach 1:
The patent applies preliminary action by establishing a correspondence between geographical locations and network information in advance. When the UE needs to perform network reselection, it can directly query networks in its current geographical location without performing comprehensive network search, thus improving reselection efficiency while maintaining reliable network access.
2Reliability
If the UE measures all found communications networks, then the UE can determine the best network to access, but the power consumption increases and reselection efficiency decreases
Solution Approach 1:
The patent extracts only the necessary measurement actions by using geographical location information to identify candidate networks first. The UE then performs measurements only on these identified candidate networks rather than all found networks, reducing power consumption while still achieving optimal network access selection.
3Reliability
If the UE performs comprehensive network search and measurement, then all networks are evaluated, but the reselection time is extended
Solution Approach 1:
The patent uses preliminary geographical location-based network identification to narrow down the evaluation scope before performing measurements. This preliminary filtering action significantly reduces the number of networks that need to be evaluated in detail, thereby reducing reselection time while maintaining reliable network selection through subsequent measurement and comparison of candidate networks.
Data Source
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AI summary
Embodiments of this application provide a network reselection method and an apparatus, and relate to the field of communications technologies. The method includes: obtaining a first geographical location in which UE is currently located; according to a correspondence between a geographical location and network information of a communications network, determining at least one second geographical location that, relative to the first geographical location, meets a preset proximity condition, and determining network information of at least one second communications network corresponding to each second geographical location; and performing network reselection processing based on at least the network information of the at least one second communications network corresponding to each second geographical location. This application can improve network reselection efficiency.