Adaptive Position Query Frequency for Mobile Terminal Load Reduction
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Solution Overview
Problem
Existing location-based applications face a significant dynamic load due to frequent and continuous queries for the geographic position of mobile terminals, especially when multiple devices are moving at varying speeds, leading to overload in transmission systems and central facility components.
Innovation Solution
The method adjusts the frequency of position queries based on the movement speed of mobile terminals, allowing for longer intervals between requests for stationary or low-speed devices, thereby reducing the load on wireless transmission systems and central facility components, and providing movement speed information to location-based applications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If continuous position queries are made at short time intervals to track moving mobile terminals, then the accuracy of position tracking is improved, but the transmission systems and central facility components are subjected to considerable dynamic load and become overloaded
Solution Approach 1:
The patent applies dynamics by making the query frequency adaptive rather than fixed. The system dynamically adjusts the time interval between position queries based on the detected movement speed of each mobile terminal. When a terminal moves faster, queries are made more frequently; when it moves slower or is stationary, queries are spaced further apart. This dynamic adjustment maintains position tracking accuracy for moving terminals while reducing the overall query load on transmission systems and central facilities.
Solution Approach 2:
The patent changes the parameter of query frequency based on movement speed conditions. By introducing movement speed as a controlling parameter, the system transforms from a static query schedule to a conditional one. The time interval between queries is modified according to the terminal's velocity, allowing the system to optimize between tracking precision and resource consumption by varying this key parameter responsive to real-time conditions.
2Loss of information
If position queries are made frequently to track multiple mobile terminals, then the position information availability is improved, but the transmission systems and central facility components are overloaded
Solution Approach 1:
The patent applies local quality by treating each mobile terminal differently based on its individual movement characteristics. Instead of applying a uniform query frequency to all terminals, the system assesses each terminal's movement speed separately and assigns customized query intervals. This localized approach ensures that terminals requiring frequent updates (fast-moving ones) receive them while terminals that don't need frequent updates (slow-moving or stationary ones) consume fewer system resources, thereby maintaining information availability where needed while reducing overall system load.
3Productivity
If position queries are made at large time intervals to reduce system load, then the dynamic load on transmission systems is reduced, but the ability to track moving terminals accurately deteriorates
Solution Approach 1:
The system dynamically adapts query intervals to match terminal movement speeds, ensuring that tracking precision is maintained for moving terminals while achieving resource efficiency for stationary or slow-moving ones. The query frequency becomes a dynamic parameter that responds to terminal velocity, automatically increasing for fast-moving terminals and decreasing for slow-moving or stationary terminals.
Solution Approach 2:
The patent modifies the time interval parameter between queries based on movement speed conditions. By making this parameter variable rather than fixed, the system achieves both goals: sufficient query frequency for accurate tracking when needed, and reduced query frequency for resource efficiency when high precision is not required, thus optimizing the trade-off between precision and productivity.
Data Source
Figure 1~2
AI summary
The geographical position (P1.. Pn), or measured information (mi) from which the geographical position (P1.. Pn) may be deduced, of a mobile terminal is determined by means of requests (anf) to the terminal (E1.. En) and positional information (pi) or measured information transmitted to a control device (PF). The speed of displacement (kv) of the mobile terminal (E1.. En) is determined from the transmitted positional information (pi) or measured information (mi) and the frequency of requests (anf) controlled depending on the determined speed of displacement (kv) of the mobile terminal (E1.. En). The communication exchange, in particular, for mobile terminals (E1.. En) with low speeds of displacement (kv) is therefore significantly reduced and the mobile terminals (El.. En) and central devices provided with dynamic load reduction.