Communication Terminal Device Direct UE-to-UE Communication Interference Management
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Solution Overview
Problem
Radio communication terminal devices in LTE-FDD cells face interference when engaging in direct TDD-based UE-to-UE communication, which can also cause local interference for other UEs served over the Uu interface, and existing systems lack efficient methods to manage and utilize direct communication terminal device to communication terminal device communication.
Innovation Solution
A communication terminal device equipped with a cellular wide area radio communication technology circuit and a message generator that can provide direct communication terminal device to communication terminal device communication capabilities, bypassing the radio access network, by transmitting messages with specific parameters indicating D2D capabilities and supporting technologies, allowing for efficient resource management and interference minimization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If direct UE-to-UE communication is implemented in LTE-FDD cells, then communication efficiency is improved, but interference to other UEs served over the Uu interface increases
Solution Approach 1:
The patent segments the communication system into two distinct interfaces: the Uu interface for traditional cellular communication between UE and base station, and the direct UE-to-UE interface for device-to-device communication. This segmentation allows independent management and resource allocation for each interface type, enabling direct communication while isolating its interference effects from the cellular network operations.
Solution Approach 2:
The base station acts as an intermediary that coordinates and manages direct UE-to-UE communications. It allocates resources, controls transmission parameters, and monitors interference levels, thereby enabling efficient direct communication while mitigating harmful effects on other UEs served over the Uu interface.
2Adaptability or versatility
If TDD-based UE-to-UE communication is used, then communication capability is enhanced, but interference with FDD cellular traffic occurs
Solution Approach 1:
The patent applies local quality by allowing different communication modes in different spatial and frequency contexts. TDD-based UE-to-UE communication is enabled in specific local scenarios where it provides benefit, while FDD cellular traffic continues uninterrupted in other contexts. The system dynamically adjusts communication characteristics based on local conditions, enabling TDD capability enhancement without causing widespread interference to FDD operations.
Data Source
AI summary
In various aspects of this disclosure, a communication terminal device may be provided. The communication terminal device may include a cellular wide area radio communication technology circuit. The cellular wide area radio communication technology circuit may be configured to provide a communication according to a cellular wide area radio communication technology. The communication terminal device may further include a circuit. The circuit may be configured to provide a direct communication terminal device to communication terminal device communication bypassing a radio access network according to information received via the radio access network. The communication terminal device may further include a message generator. The message generator may be configured to generate a message to transmit to a base station. The message may include at least one message field specifying information about at least one capability to provide the direct communication terminal device to communication terminal device communication of the communication terminal device. The message may be generated for a network communication protocol.