LMF SRS Resource Configuration for 5G Location Services
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Solution Overview
Problem
Current 5G communication systems face difficulties in configuring spatial relation information for sounding reference signal (SRS) transmission resources, which is essential for accurate location management and beam direction in positioning services, leading to increased computational complexity for base stations.
Innovation Solution
A method and apparatus are provided where the location management function (LMF) requests and determines the SRS transmission resource, including spatial relation information, and the base station configures and responds with the necessary SRS resource configuration, optimizing beam direction and reducing computational complexity by clarifying the correspondence between SRS resources and spatial relation information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the base station configures SRS transmission resources based on current NRPPa standard, then the positioning service can be provided, but the computational complexity of the base station increases due to difficulty in configuring spatial relation information
Solution Approach 1:
The LMF entity acts as an intermediary that provides spatial relation information to the base station. Instead of the base station independently determining spatial relations for SRS resources, the LMF entity supplies this information through the request message, thereby reducing the computational burden on the base station while maintaining positioning accuracy.
Solution Approach 2:
The spatial relation information is prepared and included in the request message before being sent to the base station. This preliminary preparation of spatial relation data allows the base station to directly use the provided information for configuring SRS resources without performing complex calculations during the positioning process.
2Loss of information
If the LMF provides spatial relation information in the request message, then the correspondence between SRS resources and spatial relation information is clarified, but the message structure becomes more complex
Solution Approach 1:
The spatial relation information is merged with the SRS resource request information in a single request message. By combining these related pieces of information into one message structure, the patent avoids the need for separate signaling messages, thereby clarifying the correspondence between SRS resources and spatial relation information while minimizing additional message complexity.
3Ease of operation
If the base station determines SRS resources independently without spatial relation information, then the message exchange is simpler, but the beam direction accuracy for positioning deteriorates
Solution Approach 1:
The LMF entity serves as an intermediary that provides the spatial relation information needed for accurate beam direction. This allows the base station to maintain simple resource configuration procedures while still achieving accurate beam direction through the information supplied by the LMF entity.
Data Source
AI summary
The present disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4th-Generation (4G) communication system such as Long Term Evolution (LTE). A wireless communication system is provided. The wireless communication system includes a location management function (LMF) that may efficiently determine and provide information necessary for a base station to configure a sounding reference signal (SRS) transmission resource required for a terminal.