Network-Managed Inter-Device Sessions for D2D Interference Control
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Solution Overview
Problem
Existing wireless cellular networks face interference issues due to direct device-to-device communication in licensed bands without network control, and there is a need to enhance wireless communication performance and offload network traffic through direct device-to-device communication.
Innovation Solution
Implementing an inter-device session (IDS) framework where devices can communicate directly while maintaining network control, using radio network identifiers (RNTIs) for resource allocation and power control, with network nodes managing timing and interference to ensure efficient and controlled device-to-device communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If direct device-to-device communication is implemented without network control, then communication efficiency and network offloading are improved, but interference to other mobile devices increases
Solution Approach 1:
The patent introduces a network node (base station) as an intermediary that mediates between direct device-to-device communications and the network infrastructure. The network node allocates dedicated communication resources and manages the direct communication sessions, allowing efficiency benefits while preventing interference through controlled resource allocation.
Solution Approach 2:
The patent segments the communication spectrum into dedicated resources for direct device-to-device communication versus traditional network-mediated communication. By allocating specific time-frequency resources and using separate control channels, the system allows direct communication to proceed without interfering with other network operations.
2Productivity
If direct device-to-device communication is implemented, then network offloading is improved, but control over communication resources is reduced
Solution Approach 1:
The network node performs preliminary actions by pre-allocating communication resources and establishing control mechanisms before direct device-to-device communication begins. This includes assigning dedicated time-frequency slots and configuring control channels, which simplifies the overall control architecture while enabling effective network offloading.
Solution Approach 2:
The patent implements feedback mechanisms where receiving devices send channel state information back to the network node. This feedback loop allows the network to dynamically adjust resource allocation and maintain control over communication parameters while still enabling direct device-to-device data transmission.
3Speed
If direct device-to-device communication is implemented, then communication speed is improved, but channel utilization and interference management become more difficult
Solution Approach 1:
The patent introduces dynamic resource allocation where the network node can adjust time-frequency slots and communication parameters in real-time based on channel conditions. This dynamic management allows high-speed direct communication while adapting to changing interference conditions and optimizing channel utilization.
Solution Approach 2:
The system employs periodic control mechanisms where the network node periodically monitors channel conditions and adjusts resource allocation. By using periodic feedback and scheduling, the system maintains high communication speed while effectively managing channel utilization and minimizing interference through structured time-frequency division.
Data Source
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AI summary
Systems, apparatuses, and methods for network-managed direct device to device communications are provided. Certain aspects of the disclosure involve receiving, at a first UE, UEI configuration information for an inter-device session (IDS) between the first UE and a second UE, UEI configuration information including a radio network identifier. A control message configured with the radio network identifier and a radio resource identifier for the IDS can be received. The radio resource identifier corresponds to a radio resource for transmitting data directly from the first UE to the second UE during the IDS.