D2D Group Identifier Interference Notification Mechanism
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Solution Overview
Problem
Existing device-to-device (D2D) communication systems fail to identify and mitigate interference between different D2D communication groups, leading to compromised intra-group communication quality.
Innovation Solution
Incorporating a system where a first wireless device detects a group identifier in a wireless transmission from a second device belonging to a different D2D communication group, and transmits this identifier to its base station, enabling the base station to initiate interference mitigation by reallocating communication channels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If D2D communication groups operate independently without interference identification, then device complexity is reduced, but communication reliability deteriorates due to unmitigated interference
Solution Approach 1:
The patent introduces a base station as an intermediary that receives interference notifications from D2D devices, identifies the source of interference by detecting group identifiers, and coordinates channel reallocation. This mediator approach allows interference mitigation without requiring complex peer-to-peer interference management between D2D devices, thus improving reliability while controlling device complexity.
Solution Approach 2:
The patent implements a feedback mechanism where D2D devices monitor for interfering transmissions, detect group identifiers from other D2D groups, and send notifications to the base station. The base station then responds with channel reallocation decisions, creating a closed-loop feedback system that dynamically mitigates interference while maintaining manageable device complexity through centralized coordination.
2Reliability
If D2D devices implement interference detection and notification, then communication quality is improved, but device complexity increases
Solution Approach 1:
The base station serves as an intermediary that handles the complex tasks of interference source identification and channel reallocation coordination. D2D devices only need to perform relatively simple functions: monitoring for interfering transmissions, detecting group identifiers in received signals, and sending notification messages to the base station. This division of labor improves communication quality while keeping device complexity manageable.
Solution Approach 2:
D2D devices autonomously monitor their communication environment, detect interfering transmissions from other D2D groups, and automatically send interference notifications to the base station without requiring manual intervention. This self-service capability improves communication quality through active interference management while maintaining reasonable device complexity by using standardized detection and notification procedures.
3Reliability
If base station reallocates channels for interference mitigation, then communication reliability is improved, but network control complexity increases
Solution Approach 1:
The base station uses feedback from D2D device notifications to make informed channel reallocation decisions. When a D2D device detects interference and sends a notification containing the interfering group identifier, the base station processes this feedback, identifies the source of interference, and reallocates channels accordingly. This feedback-driven approach improves communication reliability while keeping network control complexity manageable through systematic decision-making.
Solution Approach 2:
The base station acts as an intermediary that centralizes the complex task of channel reallocation coordination. By receiving interference notifications from D2D devices and managing channel assignments across multiple D2D groups, the base station simplifies network control complexity through centralized management while improving communication reliability through coordinated interference mitigation.
Data Source
AI summary
Systems and techniques for wireless device-to-device (D2D) communication are provided herein. A D2D group identifier may be included in wireless transmissions within D2D groups. D2D interference mitigation processes may be initiated when a D2D group identifier is detected by a wireless device outside the D2D group.