Wireless Positioning Latency Reduction via Advanced Timing Configuration
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Solution Overview
Problem
Current wireless communication systems, particularly in the context of 5G, face challenges in reducing latency during user equipment (UE) positioning sessions due to inefficiencies in scheduling and timing coordination between network nodes and entities.
Innovation Solution
A method involving network nodes that receive configuration messages to determine timing indications for positioning measurements, allowing for precise synchronization of measurement requests and executions during positioning sessions, utilizing hyper frame numbers, system frame numbers, and slot numbers or absolute times to optimize the timing of positioning measurements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If positioning measurements are performed using traditional scheduling methods in 5G networks, then the positioning functionality is provided, but latency is increased due to inefficiencies in timing coordination between network nodes
Solution Approach 1:
The patent applies preliminary action by configuring positioning measurement parameters in advance during a location preparation phase before the actual positioning session. The network entity provides configuration messages with time indications (hyper frame numbers, system frame numbers, slot numbers) that allow network nodes to prepare measurement resources and synchronize timing beforehand, reducing latency during the actual positioning execution phase.
2Measurement precision
If precise timing synchronization is implemented for positioning measurements, then positioning accuracy is improved, but system complexity increases due to detailed timing coordination requirements
Solution Approach 1:
The patent uses an intermediary approach by introducing a location entity that acts as a mediator between the network nodes. This entity manages the complex timing coordination by generating and distributing configuration messages containing precise time indications (hyper frame numbers, system frame numbers, slot numbers) to multiple network nodes, thereby centralizing the synchronization complexity in a single managing entity rather than requiring complex peer-to-peer coordination between all nodes.
3Productivity
If configuration messages are exchanged during location preparation phase, then measurement timing is optimized, but signaling overhead increases
Solution Approach 1:
The patent applies universality by designing the configuration message to serve multiple functions simultaneously. The single configuration message not only provides timing configuration for positioning measurements but also conveys multiple parameters including time indications (hyper frame numbers, system frame numbers, slot numbers), resource allocation information, and measurement parameters, thereby reducing the number of separate signaling messages needed and optimizing positioning session efficiency.
Data Source
AI summary
Disclosed are techniques for wireless positioning. In an aspect, a network node receives, from a network entity, during a location preparation phase of at least a first positioning session to position a user equipment (UE), a configuration message for the first positioning session, determines, based on the configuration message, a time indication indicating an amount of time between the configuration message and a measurement request for the first positioning session, or between the configuration message and a time at which the network node is expected to perform one or more positioning measurements for the first positioning session, receives the measurement request, the measurement request including a measurement time at which the network node is expected to perform the one or more positioning measurements, and performs the one or more positioning measurements during the first location execution phase based on the measurement time.