Radio Terminal Controller for Direct Communication Resource Management
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Solution Overview
Problem
Current communication systems face challenges in efficiently managing direct communication between radio terminals and base stations, particularly in handling data transmission to multiple addresses within a predetermined period, which affects the reliability and efficiency of proximity services like ProSe.
Innovation Solution
A radio terminal and base station configuration that includes a controller to manage direct communication by receiving and transmitting data with associated radio resource information, requesting permission for data transmission to multiple addresses, and optimizing transmission periods to reduce signaling and enhance data transfer efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If data is transmitted to multiple addresses by direct communication within a predetermined period, then communication efficiency is improved, but signaling overhead increases
Solution Approach 1:
The patent combines multiple data transmissions to different addresses into a single predetermined period, merging control information and data transmissions. This allows the radio terminal to efficiently transmit data to multiple addresses while the base station manages the consolidated signaling, thereby improving communication efficiency without proportionally increasing signaling overhead.
2Reliability
If permission is requested for data transmission to multiple addresses, then transmission reliability is improved, but device complexity increases
Solution Approach 1:
The base station acts as an intermediary that receives permission requests from the radio terminal for data transmission to multiple addresses. The base station manages the permission granting process centrally, which improves transmission reliability through controlled authorization while preventing the radio terminal from becoming overly complex with permission management logic.
3Reliability
If radio resources are allocated for direct communication, then communication quality is improved, but resource allocation complexity increases
Solution Approach 1:
The patent implements preliminary allocation of radio resources for direct communication before actual data transmission occurs. The base station pre-allocates resources within predetermined periods, which ensures communication quality is maintained while reducing the complexity of real-time resource allocation decisions during active transmission.
Data Source
AI summary
A radio terminal according to an embodiment is configured to perform direct communication with another radio terminal. The radio terminal comprises a controller configured to receive first data addressed to said another radio terminal from a base station. When the controller receives the first data from the base station, the controller is configured to also receive information indicating a first radio resource used for transferring the first data to said another radio terminal by the direct communication.