Base Station D2D Resource Reuse for Spectrum Efficiency
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Solution Overview
Problem
The existing communication systems face challenges in maximizing the utilization of limited spectrum resources, particularly in FDD systems where downlink spectrum resources are insufficient while uplink resources are often idle, leading to inefficient resource allocation.
Innovation Solution
A method where a second base station receives resource configuration information from a first base station and sends it to user equipment (UE), allowing the UE to perform D2D communication using resources configured by the first base station, thereby reusing uplink or downlink resources to improve overall system resource utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If downlink spectrum resources are allocated to meet high data communication rate requirements, then communication rate is improved, but spectrum resources become insufficient and utilization efficiency decreases
Solution Approach 1:
The patent enables uplink spectrum resources to serve dual purposes: traditional uplink communication and downlink communication through D2D mode. By allowing UE to transmit downlink data on uplink resources when in D2D mode, the system achieves multi-functionality of spectrum resources, effectively increasing available downlink capacity without requiring additional spectrum
Solution Approach 2:
The patent dynamically changes the functional parameter of spectrum resources based on UE mode. When UE switches to D2D mode, the same physical resources are reconfigured from uplink-only to support downlink transmission, achieving parameter change in resource allocation to resolve the contradiction between communication rate requirements and spectrum availability
2Productivity
If uplink spectrum resources are allocated for uplink communication, then uplink service volume is improved, but resources remain idle during downlink-dominant traffic conditions leading to low utilization
Solution Approach 1:
The patent makes uplink spectrum resources universal by enabling them to serve both uplink communication and downlink communication needs. Through D2D mode configuration, uplink resources can be dynamically utilized for downlink data transmission, eliminating idle time and achieving continuous productive use of spectrum resources
Solution Approach 2:
The system allows UE in D2D mode to self-configure and use uplink resources for downlink communication without requiring separate downlink resource allocation. The UE autonomously determines when to switch to D2D mode and utilizes available uplink resources, achieving self-service resource utilization that eliminates waste
Data Source
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AI summary
The present invention provides a resource allocation method, a base station, and user equipment. The method includes: receiving, by a second base station, resource configuration information of a first base station; and sending, by the second base station, the resource configuration information of the first base station to user equipment UE, where the resource configuration information of the first base station is used to configure a resource for device-to-device D2D communication between the UE and the second base station. According to the method provided in embodiments of the present invention, the UE can perform D2D communication with the second base station or a core network by using the resource configured by using the resource configuration information of the first base station. Therefore, an uplink resource or a downlink resource of the first base station can be reused by the UE, thereby improving resource utilization of a communications system.