Cellular and D2D Coexistence via Dynamic Resource Allocation
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Solution Overview
Problem
Conventional cellular networks face limitations in supporting high data rate and proximity services, and the coexistence of cellular and Device-to-Device (D2D) communication is hindered by interference and resource management challenges, particularly in out-of-coverage scenarios, affecting the quality of service and user experience.
Innovation Solution
A method and system that enables the coexistence of cellular and D2D communication by controlling resource allocation and information exchange through specific control messages, allowing UE to monitor and receive D2D information in out-of-coverage resource pools, thereby avoiding interference and ensuring seamless communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If UE monitors and receives D2D information in out-of-coverage resource pools, then D2D communication capability is improved, but cellular communication performance deteriorates due to interference
Solution Approach 1:
The patent implements dynamic resource allocation where the eNB configures time-domain resource patterns that adaptively control when UE monitors D2D information based on cellular communication needs. The network can dynamically adjust the monitoring configuration through RRC messages, MAC CEs, or DCI formats, allowing the system to switch between D2D monitoring and cellular communication priorities as conditions change
Solution Approach 2:
The patent applies local quality by allowing D2D monitoring only in specific time-domain resources that are configured by the network, rather than continuous monitoring. The eNB can selectively enable D2D information reception in certain subframes or time windows while maintaining cellular communication in other resources, creating localized monitoring opportunities that minimize interference
2Reliability
If UE continuously monitors D2D information, then D2D discovery and communication reliability is improved, but energy consumption increases
Solution Approach 1:
The patent implements periodic D2D information monitoring where UE checks for D2D information at specific intervals configured by the network, rather than continuously monitoring. The eNB can configure periodic monitoring patterns through RRC parameters or dynamic indications, allowing UE to enter low-power states between monitoring periods while still maintaining reliable D2D discovery and communication capability when needed
3Productivity
If resource pool for out-of-coverage D2D communication is shared, then resource utilization efficiency is improved, but interference between D2D and cellular communication increases
Solution Approach 1:
The patent segments time-domain resources by configuring specific time-domain resource patterns that divide the shared resource pool into distinct monitoring opportunities. The eNB can allocate different time windows or subframes for D2D monitoring versus cellular communication, creating temporal segmentation that allows both D2D and cellular services to share the same frequency resources while minimizing mutual interference through time division
Data Source
AI summary
Provided are a cellular communication and device-to-device (D2D) communication coexistence method, system and device, and a storage medium. The method comprises: receiving resource control information (401); and monitoring and receiving D2D information in a resource pool having no network coverage according to the resource control information (402).