D2D Terminal Group Management via Position Monitoring
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Solution Overview
Problem
Current wireless communication systems face challenges in managing device-to-device (D2D) terminal groups, particularly in maintaining connections and positioning of group members, especially when terminals deviate from coverage or experience emergency situations.
Innovation Solution
A method for managing D2D terminal groups involves using D2D signals to continuously monitor and maintain connections between group members, even when they are out of coverage, and effectively managing emergency situations by designating adjacent terminals as part of the group.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If D2D terminal groups are managed using traditional network coverage-based methods, then connection management is simple within coverage, but connections cannot be maintained when terminals deviate from coverage
Solution Approach 1:
The patent introduces a group manager terminal as an intermediary within the D2D terminal group to maintain connections when network coverage is unavailable. The group manager acts as a local controller that coordinates communication and position management among group members, enabling continuous connection maintenance through peer-to-peer D2D signaling independent of network coverage
Solution Approach 2:
The D2D terminal group performs self-management through autonomous group members that can independently monitor positions, detect emergencies, and maintain connections using D2D signals without requiring network infrastructure. The group autonomously handles connection maintenance and position management through distributed intelligence among members
2Measurement precision
If continuous position monitoring of D2D group members is implemented, then position management accuracy is improved, but system complexity and energy consumption increase
Solution Approach 1:
The patent segments the position management function by assigning a specific group manager terminal to handle position monitoring and management for the entire D2D group. Individual terminals report their positions to the group manager, which centralizes the complexity of continuous monitoring while maintaining accurate position management for all group members
Solution Approach 2:
The patent combines multiple functions including position reporting, emergency detection, and connection management into a unified D2D signal exchange mechanism. The group manager integrates these functions to manage the entire group through coordinated D2D signaling, reducing overall system complexity while maintaining measurement precision
3Reliability
If D2D signals are used for continuous communication outside network coverage, then connection reliability is improved, but energy consumption increases
Solution Approach 1:
The patent implements periodic position reporting and D2D signal exchange instead of continuous communication. Group members report positions at intervals to the group manager, and emergency detection uses periodic monitoring of D2D signal characteristics, reducing energy consumption while maintaining connection reliability through scheduled communications
Solution Approach 2:
The D2D terminal group performs self-management through autonomous group members that can independently monitor positions, detect emergencies, and maintain connections using D2D signals without requiring network coverage
Data Source
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AI summary
The present invention discloses a method for managing a device to device (D2D) terminal group in a wireless communication system and an apparatus for the same. In detail, a method for managing a device to device (D2D) terminal group in a wireless communication system may include the steps of: receiving, by a first terminal which belongs to the D2D terminal group, a discovery signal from a second terminal which belongs to the D2D terminal group on a physical sidelink discovery channel (PSDCH); calculating, by the first terminal, a position of the second terminal by using the discovery signal; and displaying, by the first terminal, the position of the second terminal based on the position of the first terminal.