TRP Information Management for Moving Cells in 5G
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Solution Overview
Problem
Current mobile communication systems face challenges in accurately providing location services for terminals in moving cells, particularly in 5G and beyond systems, where the mobility of cells complicates the localization process and requires enhanced TRP information management.
Innovation Solution
The proposed solution involves a method and apparatus where a base station and a location management function (LMF) entity exchange TRP information request and response messages, with the base station indicating if a TRP is a moving cell, including specific indicators and location information, to ensure accurate location services for terminals in mobile communication systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If TRP information is updated using conventional methods in moving cells, then the location service can be provided, but the accuracy of location services deteriorates due to cell mobility
Solution Approach 1:
The patent applies dynamics by introducing a mobility indicator that dynamically identifies whether a TRP is in a moving cell. The base station determines the mobility state of each TRP and indicates this state to the LMF, allowing the system to adapt its location service provisioning based on the dynamic mobility condition. This resolves the contradiction by enabling accurate location services for both stationary and moving TRPs through dynamic identification and handling.
2Measurement precision
If the base station indicates TRP mobility status to the LMF, then location service accuracy improves, but the signaling complexity increases
Solution Approach 1:
The patent extracts the mobility indication as a separate, dedicated field within the TRP information response message. By taking out the mobility status indication as a distinct element, the system adds minimal signaling overhead while providing essential mobility information. This approach improves location accuracy without significantly increasing overall signaling complexity, as the indication is integrated into existing message structures.
Solution Approach 2:
The mobility indicator is designed as a universal field that can be included in various TRP information response messages regardless of the specific message type or context. This multi-functional approach allows the same indication mechanism to serve different purposes (location services, mobility management, network optimization) without requiring separate signaling procedures, thereby improving accuracy while keeping signaling complexity manageable.
Data Source
AI summary
The disclosure relates to a fifth generation (5G) or sixth generation (6G) communication system for supporting a higher data transmission rate. A method performed by a base station in a wireless communication system is provided. The method includes receiving, from a location management function (LMF) entity, a transmission reception point (TRP) information request message including at least one TRP identification (ID), and transmitting, to the LMF entity, a TRP information response message including first indication information indicating that a TRP corresponding to the TRP ID is a moving cell.