On-Demand Reference Signals for Wireless Location
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Solution Overview
Problem
Current wireless networks consume significant device and network resources for measuring and reporting location-related parameters, leading to inefficiencies and high bandwidth usage, especially with always-on periodic reference signals.
Innovation Solution
Implementing on-demand reference signals, where the user equipment (UE) requests reference signals only when needed, reducing unnecessary transmissions and configurations, and pre-configuring UE with a set of location assistance data for future use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If always-on periodic reference signals are used for location measurements, then location measurement capability is maintained continuously, but bandwidth consumption and network resources increase significantly
Solution Approach 1:
The patent implements on-demand reference signals where base stations transmit reference signals only when triggered by a location measurement request, rather than continuously periodic transmissions. The network server receives a location measurement request, determines triggering conditions, and instructs base stations to transmit reference signals only when conditions are met, reducing unnecessary bandwidth consumption while maintaining location measurement capability when needed
Solution Approach 2:
The UE autonomously determines whether to request location measurements by evaluating its own location measurement needs against configured triggering conditions. When the UE determines a location measurement is needed, it autonomously sends a location measurement request to the network server without requiring continuous network polling, reducing network overhead and bandwidth consumption
2Measurement precision
If reference signals are transmitted continuously, then location measurement accuracy is maintained, but network efficiency decreases due to unnecessary transmissions
Solution Approach 1:
The patent implements dynamic reference signal transmission where base stations adjust their transmission behavior based on real-time triggering conditions. Reference signals are transmitted dynamically only when the network server determines triggering conditions are met, rather than following a fixed continuous schedule, optimizing network efficiency while maintaining measurement accuracy when needed
Solution Approach 2:
The network server configures triggering conditions that include parameters such as time thresholds, location measurement types, and base station identifiers. These parameters dynamically control when reference signals are transmitted, allowing the system to adapt transmission behavior to actual location measurement needs and improve overall network efficiency
3Loss of energy
If on-demand reference signals are implemented, then bandwidth consumption is reduced, but latency increases due to request-response configuration process
Solution Approach 1:
The network server pre-configures triggering conditions for reference signal transmission, including time thresholds, location measurement types, and base station identifiers. This preliminary configuration allows base stations to quickly determine whether to transmit reference signals without requiring complex real-time decisions, reducing processing latency while maintaining on-demand transmission benefits
Solution Approach 2:
When triggering conditions are met, the system rapidly proceeds through the reference signal transmission process. The network server quickly determines triggering conditions, instructs base stations to transmit reference signals, and the UE performs measurements without unnecessary delays or intermediate steps, minimizing latency in the on-demand reference signal workflow
4Productivity
If UE autonomously requests reference signals, then network control is reduced, but location measurement efficiency improves
Solution Approach 1:
The patent segments the location measurement control into two parts: the network server manages triggering condition configuration and reference signal transmission instructions, while the UE autonomously evaluates its own location measurement needs and sends requests when conditions are met. This segmentation allows the UE to operate independently based on pre-configured rules, improving efficiency without requiring complex real-time network control
Data Source
AI summary
Some aspects of this disclosure relate to apparatuses and methods for implementing techniques for providing a user equipment (UE) with on-demand reference signals for location related measurements of the UE. The UE can receive location assistance data from a network server, where the location assistance data includes information about a plurality of downlink reference signals that can be used to perform location related measurements by the UE. The UE can send a request to a base station for a reference signal. The reference signal is selected from the plurality of downlink reference signals of the location assistance data. Furthermore, the UE can receive the reference signal from the base station, and perform a location related measurement based on the received reference signal.