Indoor UE Transmission Parameter Selection via Location Indicator
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Solution Overview
Problem
Current wireless communication systems face challenges in accurately determining whether User Equipment (UE) is indoors or outdoors, leading to inefficiencies in network optimization and performance, particularly in indoor-specific deployments where existing solutions like GPS are inaccurate or impractical.
Innovation Solution
A method where the UE sends an indication to the network node about its indoor or outdoor location, allowing the network node to select optimal transmission parameters such as Modulation and Coding Scheme (MCS) and MIMO rank, based on this information, to enhance network performance and user experience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If GPS positioning is used to determine UE location, then positioning service is provided, but measurement precision deteriorates indoors
Solution Approach 1:
The patent introduces an intermediary indicator (indoor/outdoor status) that the UE reports to the network. This indicator serves as a mediator between the UE's actual location state and the network's parameter selection, allowing the network to infer indoor/outdoor status without relying on imprecise GPS data alone. The network uses this indicator to select appropriate transmission parameters suited for the determined environment.
2Productivity
If network uses generic transmission parameters for all UEs, then device complexity is reduced, but network performance deteriorates in indoor deployments
Solution Approach 1:
The patent applies local quality by selecting different transmission parameters based on the UE's local environment (indoor vs. outdoor). Instead of using uniform parameters for all UEs, the network node selects specific parameters (such as different MCS values, power levels, or antenna configurations) tailored to the particular indoor or outdoor conditions of each UE, thereby optimizing performance for each local context.
Solution Approach 2:
The patent implements dynamics by making transmission parameters adaptable and changeable based on real-time UE status. The network node dynamically selects parameters in response to the UE's reported indoor/outdoor indicator, allowing the system to transition between different parameter sets as UEs move between environments, rather than being fixed or static.
3Productivity
If network optimizes parameters for indoor UEs, then indoor system performance is improved, but loss of information occurs about UE location status
Solution Approach 1:
The patent implements feedback by having the UE actively report its indoor/outdoor status to the network through a specific indicator. This feedback mechanism ensures that the network maintains current information about UE location status, which then informs subsequent parameter selection decisions. The continuous feedback loop prevents information loss by keeping the network updated on UE environmental status.
Data Source
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AI summary
A method performed by a network node is provided. The network node and a User Equipment (UE) operate in a wireless communications system. The network node receives (201) from the UE, an indication of whether or not the UE is indoors. The network node then selects (203) transmission parameters based on the received indication.