Base Station D2D Resource Pool Allocation
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Solution Overview
Problem
The existing 3GPP LTE communication system does not support direct communication between user equipment (UEs) without relying on a base station, limiting its application in public safety networks where efficient direct communication is needed.
Innovation Solution
A base station dynamically allocates resource blocks from the LTE communication system based on signal quality and traffic loading information to create a D2D resource pool, enabling direct communication between UEs, and extends these resources to public safety networks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If direct communication between UEs is implemented without base station involvement, then communication efficiency is improved, but resource allocation control deteriorates
Solution Approach 1:
The base station acts as an intermediary that provides resource pools for D2D communication without requiring direct involvement in each communication transaction. The base station allocates resource pools semi-statically and allows UEs to autonomously select resources from these pools, combining centralized resource management with decentralized communication execution.
2Adaptability or versatility
If existing LTE resources are extended to public safety networks, then resource utilization is improved, but system compatibility challenges increase
Solution Approach 1:
The resource pool is segmented into multiple resource blocks that can be independently allocated and configured. This segmentation allows the system to provide dedicated resource pools for D2D communication while maintaining the integrity and independent operation of the existing LTE resource allocation mechanisms.
Solution Approach 2:
The base station's resource allocation mechanism is designed to serve multiple functions: traditional LTE uplink communication and D2D direct communication. By providing semi-static resource pool allocation, the system achieves multi-functionality where the same infrastructure supports both conventional and direct communication modes.
3Adaptability or versatility
If dynamic resource allocation is implemented for D2D communication, then communication flexibility is improved, but base station processing load increases
Solution Approach 1:
The base station performs preliminary resource pool allocation semi-statically, establishing resource pools in advance rather than dynamically allocating resources for each D2D communication instance. This preliminary action reduces the real-time processing burden on the base station while still providing flexible resource access to UEs.
Data Source
AI summary
A base station and a device to device user equipment for a wireless communication system are provided. The wireless communication system defines a resource pool. The base station includes a storage, a processor and a transceiver. The storage stores signal quality information and traffic loading information. The processor chooses a plurality of resource blocks from the resource pool to form a device to device (D2D) resource pool according to at least one of the signal quality information and the loading information, and generates resource configuration information according to the D2D resource pool. The resource configuration information indicates the D2D resource pool. The transceiver transmits the resource configuration information.