Inter-Device Session Resource Scheduling for D2D Interference Control
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Solution Overview
Problem
Current wireless cellular networks face interference issues due to direct device-to-device communications in licensed bands without network control, and there is a need for efficient methods to enable direct device-to-device communication while maintaining network control and minimizing interference.
Innovation Solution
The implementation of inter-device sessions (IDS) in wireless communications networks, where configuration information is transmitted to user equipment (UEs) for direct communication, including radio resource control messages with IDS radio network temporary identifiers (RNTIs), allowing UEs to communicate directly while maintaining network control through resource allocation and feedback mechanisms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If direct device-to-device communication is implemented in licensed bands without network control, then communication efficiency and productivity are improved, but interference to other mobile devices and loss of network control increase
Solution Approach 1:
The network node acts as an intermediary that allocates dedicated time-frequency resources for D2D communication. By controlling resource allocation through the network, D2D communications can proceed efficiently while preventing interference to other devices operating in the same licensed bands. The network node schedules resources and manages the D2D sessions, serving as a mediator between direct communication needs and network-wide interference prevention.
2Productivity
If direct device-to-device communication is implemented, then network load is reduced and productivity improves, but device complexity and difficulty of managing resource allocation increase
Solution Approach 1:
The complex resource allocation and session management functions are extracted from the user devices and centralized in the network node. This allows devices to engage in simple direct communication while the network node handles the complicated tasks of resource allocation, scheduling, and session management. The extraction of management complexity from devices to the network enables D2D communication without burdening devices with complex resource allocation algorithms.
3Object-affected harmful factors
If network control is maintained for direct device-to-device communication, then interference is minimized, but communication speed and productivity are reduced compared to completely autonomous D2D
Solution Approach 1:
The network node performs preliminary resource allocation before D2D communication begins. By pre-assigning dedicated time-frequency resources and configuring transmission parameters in advance, the network enables fast direct communication without real-time control overhead during actual data transfer. This preliminary setup ensures interference prevention while allowing high-speed communication once the session is established.
Data Source
AI summary
Methods, systems, and apparatuses of a wireless communications network can involve transmitting, to a first user equipment (UE), configuration information for the first UE (UE1 configuration information) for an inter-device session (IDS) between the first UE and a second UE. The UE1 configuration information may include a first IDS radio network temporary identifier (IDS-RNTI). A radio resource control (RRC) message indicating a resource allocation can be transmitted to the first UE for the first UE to communicate directly with the second UE.