Delegate UE Group Positioning for Low-Power 5G Wearables
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently supporting positioning procedures for reduced capacity devices, such as wearable devices and accessory devices, which often have limited battery life and communication capabilities, in cellular networks like LTE and 5G NR.
Innovation Solution
Implementing group-based positioning procedures where UEs participate in group-based positioning through network communication and peer-to-peer interactions, with a delegate UE performing positioning tasks, and configuring UEs to switch between different PRS configurations based on DRX cycles to optimize power consumption and positioning accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If individual positioning procedures are performed for each UE, then positioning accuracy is maintained, but power consumption increases and battery life decreases for reduced capacity devices
Solution Approach 1:
Multiple UEs are grouped together and perform positioning procedures collectively through a delegate UE rather than individually. The delegate UE represents the entire group in positioning interactions with the network, merging multiple positioning tasks into a single representative action that maintains accuracy while reducing individual device power consumption.
Solution Approach 2:
The delegate UE serves multiple functions: it represents the entire group in positioning procedures, receives positioning information on behalf of all group members, and distributes this information back to the group. This multi-functional role eliminates the need for each UE to independently perform positioning tasks.
2Measurement precision
If reduced capacity devices perform frequent positioning updates, then positioning accuracy is maintained, but battery life is significantly reduced
Solution Approach 1:
Positioning updates for multiple UEs are consolidated through the delegate UE, which performs positioning procedures periodically on behalf of the entire group. This merging approach maintains positioning accuracy for all devices while significantly extending battery life by eliminating frequent individual positioning operations.
Solution Approach 2:
The delegate UE performs positioning procedures at periodic intervals rather than continuously for each individual UE. This periodic action maintains positioning accuracy within acceptable bounds while dramatically reducing the frequency of power-consuming operations, thereby extending battery life for reduced capacity devices.
3Use of energy by moving object
If group-based positioning with delegate UE is implemented, then power consumption is reduced and battery life is extended, but positioning accuracy may be compromised
Solution Approach 1:
The delegate UE acts as an intermediary between the reduced capacity devices and the network positioning infrastructure. It performs positioning measurements and receives positioning information that is then distributed to group members, maintaining positioning accuracy while reducing power consumption for the actual reduced capacity devices.
Solution Approach 2:
The delegate UE obtains positioning information from the network and copies/distributes this information to all group members. Each UE receives an accurate position estimate without needing to perform its own positioning measurements, thereby maintaining positioning accuracy while eliminating the power consumption associated with individual positioning operations.
4Measurement precision
If UEs continuously monitor for positioning signals, then positioning accuracy is maintained, but power consumption increases
Solution Approach 1:
The delegate UE performs positioning signal monitoring and measurements at periodic intervals rather than continuously. This periodic monitoring maintains positioning accuracy for the group while dramatically reducing the energy consumption associated with continuous signal monitoring, thereby extending battery life for reduced capacity devices.
Data Source
AI summary
Apparatuses, systems, and methods for positioning procedures for reduced capacity devices, e.g., in 5G NR systems and beyond. A UE may determine a group of UEs to participate in group-based positioning, e.g., via communication with an LMF of a network and/or via peer-to-peer communications with neighboring UEs. The UE may participate in selection of a delegate UE from the group of UEs where the delegate UE may perform a positioning procedure with a network entity of the network. The selection may be network based (e.g., the delegate UE is selected by the LMF) or local (e.g., the group of UEs select/elect the delegate UE). Additionally, the UE may receive a position estimate based on the positioning procedure performed by the delegate UE and the network entity. The position estimate may be received via a broadcast or unicast message from the LMF and/or from the delegate UE.