Locating List Filtering for Bluetooth Device Positioning
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Solution Overview
Problem
Current locating methods for Bluetooth-equipped user equipment, especially wearable devices, increase the load on the locating system and reduce its processing capability due to the need for base stations to receive and process signals from all devices, including those that do not require location services.
Innovation Solution
A method where user equipment determines its locatability based on a locating list sent by the base station, allowing only identified locatable devices to receive and process locating signals, thereby reducing unnecessary power consumption and system load.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the base station receives locating signals from all user equipments with Bluetooth function, then the locating system can potentially locate any device, but the load of the locating system increases and processing capability decreases
Solution Approach 1:
The patent segments the user equipment population into two distinct groups: locatable devices (those with locating functionality enabled) and non-locatable devices (those without locating functionality or with it disabled). The base station maintains a locating list that identifies only the locatable devices, thereby segmenting the signal processing task to handle only relevant devices rather than all Bluetooth-equipped devices, thus improving system productivity while maintaining locating capability for needed devices.
2Measurement precision
If wearable user equipment continuously receives and processes locating signals, then locating accuracy can be maintained, but power consumption increases
Solution Approach 1:
The patent applies preliminary action by having the base station pre-establish and distribute a locating list containing identifiers of locatable devices before the actual locating process. User equipment checks this pre-prepared list to determine whether it should receive and process locating signals. This preliminary filtering action prevents unnecessary signal processing by non-locatable devices, thereby reducing their power consumption while ensuring that locatable devices maintain accurate locating capability.
3Adaptability or versatility
If the base station processes locating signals from all devices, then no device is excluded from locating, but the load on the locating system increases
Solution Approach 1:
The patent extracts the locating functionality identification from the general device set by maintaining a separate locating list that contains only identifiers of devices with locating functionality enabled. The base station processes locating signals by referencing this extracted subset rather than handling all devices uniformly. This extraction approach reduces system load by eliminating unnecessary processing of non-locatable devices while preserving device compatibility through the optional nature of the locating list mechanism.
Data Source
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AI summary
The present invention relates to a locating method, user equipment, and a base station. The locating method includes: receiving, by user equipment, a locating broadcast message sent by a base station, where the locating broadcast message carries a locating list, and the locating list includes an identifier of locatable user equipment; and if the locating list does not include an identifier of the user equipment, ignoring, by the user equipment, a locating signal sent by the base station.